Low Pressure Atmospheric Systems

Low pressure atmospheric systems are also known as depressions or cyclones and they form in mid- and high-latitudes. They are formed by the mixing of cold and warm air, the warm air is lighter, so it rises above the denser, cold air and forms a centre of low pressure. High pressure atmospheric systems are also known as anticyclones and have very different characteristics to depressions. Anticyclones are large masses of subsiding air, which produces high pressure at the surface.There are a variety of difference between anticyclones and depressions, including the weather conditions, the length of time they last and the impact they have upon diverse countries and areas. Low pressure atmospheric systems can cause hazards because of severe weather such as blizzards and heavy snowfall, as well as high winds and heavy rainfall. This can have harsh impacts among individuals, being a lead cause of hypothermia, and frostbite, especially those vulnerable, such as the elderly. Also, these depres sions can cause crops to be destroyed, and a high mortality rate throughout the spring lambing season.Extreme cold spells can have a massive negative effect on a global scale, but also in a specific country or region. High pressure atmospheric systems affect the globe, especially the southern hemisphere, as it is nearly always continuous, although in places such as Australia and South Africa, this is broken throughout their summer. With anticyclones, there are few winds, so maps usually have circular spaced out isobars. Also, these atmospheric systems block depressions, which mean that their impacts are usually long-term, because they are constant. Weather associated with anticyclones differentiates depending on the time of year.In summer, anticyclones produce long periods of dry, hot, sunny weather, which can then cause heat waves and drought. However, in winter the cloudless nights mean that temperatures drop, and does not recover the next day because of weak sunshine and lingerin g fog. The impacts of anticyclones and depressions vary, as does the period they remain and the effect they have. The North American blizzard of 2003 lasted for five days throughout February and occurred on the East Coast of the USA and Canada. It was a record-breaking blizzard, which caused 27 deaths and over $14 million worth of damage.The cities in America were bought to a standstill, as there was a range of 38-76cm of snow covering the ground. The cause for such an unusually extreme blizzard was the fact that the conditions were favourable, with moisture from the Atlantic Ocean enhancing precipitation and a high pressure system over Canada, allowing cold air to be brought down coastal areas. This meant that the precipitation was mainly snow, hence the record-breaking statistics. The effects this storm had were mainly short-term, but the roof of the historic Railroad Museum collapsed and 27 people lost their lives.Additionally, transport infrastructure was brought to a halt, and three major airports were also closed. So, the impacts of depressions are mainly short-term, although the destruction can be horrendous, whereas, anticyclones usually cause long-term impacts on a country such as the Drought in Britain and Europe in 2003. This drought effected many locations, but the main focus was on the UK, France and Portugal. Not all impacts are negative, as the heat wave did boost the tourist industry in most countries and sales for summer items such as barbeques and sun cream increased, but this positive outlook is short-lived.In the UK, an estimated 200 people lost their lives due to poor air quality, and this figure was 10% higher than the average. Furthermore, transport was disrupted because of roads melting at such high temperatures, and the London Underground was 37Â °, which is over the legal limit to transport animals. Finally, in the UK the cost of people taking days off work to enjoy the hot weather was between ?7. 5million and ?10million per day. In France, the death toll was as high as 30,000 and harvests were down by 30 to 50% on 2002.Additionally, the nuclear power plants could not produce the soaring demands for energy, which was used for refrigerators and air conditioning, because there was less water available for cooling. Portugal declared a State of Emergency after the worst forest fires in 30 years. Approximately 35,000 hectares of forest, farmland and scrub was burned, and 1300 people died. 80 families were forced to abandon their homes, and arsonists begun deliberately causing fires, to gain compensation. The impacts of anticyclones on all of these countries had a massive effect, and it lasted over a month, with the hottest temperatures for up to 500 years.This demonstrates the long and short term impacts that anticyclones have on regions, countries and on a global scale. Location does have a result on the impact of low and high atmospheric pressure systems because they can be underdeveloped or have a lot of technolo gy that can be damaged or ruined. MEDC’s usually lose fewer lives than LEDC’s, no matter if it is a depression or a cyclone. Also, the evidence seems to suggest that depressions have a shorter impact on an area than anticyclones, but this is not necessarily true.Long-term secondary hazards can be a large issue after a depression, as the damage from flooding or heavy snow can be excessive and highly damaging. I conclude, low pressure atmospheric systems do usually have shorter-term impacts on a location, rather than high pressure atmospheric systems, but the secondary hazards can be a long-term issue for both of these hazards. Furthermore, the impact they have, may be different, depending on location, because a LEDC will be severely affected by both of these hazards, and will most likely have long-term consequences.

Coastal management

THE LOBBY and several bedrooms parted company with the Holbeck Hall Hotel yesterday, leaving half of the four-star establishment behind. Engineers said heavy rain this spring after several dry summers was the probable cause of the landslip, which has sent sections of the hotel toppling into the North Sea. The north-east wing of the 30-bedroom hotel collapsed into Scarborough's South Bay on Saturday night. Guests had been evacuated early on Friday after huge cracks appeared overnight. The rest of the east wing gave way yesterday, leaving the hotel barely half intact, but what remains is likely to be demolished. Geologists say the east Yorkshire coast, with it's steep clay cliffs, has always been vulnerable. South of Scarborough, the 40-mile stretch of cliffs of Holderness is the fastest-eroding coastline in Europe and is experiencing the worst land-slips for 40 years. But Mr Michael Clements, director of technical services for Scarborough council, said sea erosion was not a factor in the Holbeck landslip. The cliffs below the hotel are protected at their base by a sea wall. The main problem, he said, was probably heavy rain which penetrated layers of sand and gravel in the cliffs, lubricating the clay which had cracked in hot weather. â€Å"There is a long history of cliff movements in the area,† Mr Clements said. â€Å"According to local records, the first Scarborough spa was carried away by a landslide in 1770, while the Holbeck cliffs suffered a major slip in 1912. Cliff stabilisation schemes were carried out further north at Whitby in the 1980's and at Robin Hood's Bay in the 1970's. In the fishing village of Staives, the breakwaters were recently raised. Pressure for further protection has run up against the obstacle of expense. â€Å"The cost of protecting these cliffs is phenomenal.† Mr Clements said. â€Å"The work at Whitby cost à ¯Ã‚ ¿Ã‚ ½3.4 million.† Most developed areas around Scarborough have seawalls but this is not the case further south, where Mr Eddie Knapp, principal engineer of Holderness council, said there had been â€Å"unusually large and particularly worrying† land losses over the past six months. â€Å"The average rate of erosion is 6ft a year but this year it has been up to 65ft in places,† Mr Knapp said. At Skirlington, 65ft of land has recently fallen into the sea, carrying away 23 bases at a caravan park, while 70ft of land has gone at Aldbrough caravan park, leaving 15ft of unfenced land before a 60ft drop into the sea. A family living in a chalet at Atwick, near Hornsea, was rehoused when the cliff edge came perilously close. Mrs Sue Earle, chairman of the Holderness Coast Protection Committee, is to outline local concerns in talks at the Agriculture Ministry today. Mrs Earle, whose farm-house is 30ft from the cliff edge at Cowden, said: â€Å"Now that this has happened in a nationally-known resort, I hope it will help to bring the issue out into the open. Daily Telegraph, 7.6.93 South Coast subsiding as the sea level rises By Christine McGourty, Technology Correspondent PART of the south coast of England is sinking at a rate of almost an inch every five years, according to new research. The find comes from an analysis of tidal measurement data from 1962 until about 1985 by Portsmouth University researchers. The higher tide measurements were thought to be a combination of subsidence and rising sea levels. Discovery of the subsidence à ¯Ã‚ ¿Ã‚ ½ from Portsmouth to Newhaven à ¯Ã‚ ¿Ã‚ ½ follows evidence from around the world that global sea levels have risen by four to six inches over the past 100 years. The subsidence will add to the problems expected from the sea level rise associated with global warming. Sea levels on the south coast are expected to rise by at least eight inches by 2050. Dr Janet Hooke, director of the university's river and coastal environment research group, said: â€Å"Most previous studies showed the subsidence was confined to East Anglia. This is the first analysis to show that parts of the south coast may be subsiding too. The movement may have origins back in the last ice age.† Malcolm Bray, one of the researchers, said at the Institute of British Geographers' annual conference in Nottingham: â€Å"It seems frightening. â€Å"What we're doing now is to work out what it means for the local authorities affected. â€Å"We can't stop flooding à ¯Ã‚ ¿Ã‚ ½ that's an act of God à ¯Ã‚ ¿Ã‚ ½ but we may be able to minimise the impact through coherent local and regional strategies. â€Å"We need to study the coast over longer distances and look slightly further into the future to stop authorities doing something that could have detrimental effects on their neighbours. â€Å"Our research shows that some parts of the coast are independent but many parts are interconnected.† They found the stretch from Lyme Regis to Newhaven could be divided naturally into nine â€Å"coastal cells†. Dr Hooke said: â€Å"Some preventative measures need to be taken now while the opportunity is there. â€Å"We don't want to see building on very vulnerable zones, which could just create problems for the future with flooding and erosion. â€Å"Plans may be needed to manage conservation of wetlands which are particularly vulnerable.† The researchers welcomed the Government's strategy for coastline management, announced last October, and said that more coherent analysis of longer stretches of coastline were needed all around the country. * Navy beans, from which baked beans are produced, could be grown in England if the global temperature rises as predicted in the next century, according to a study. Researchers at Coventry University and Horticultural Research International have found that navy beans could be grown in Hampshire, East and West Sussex and Kent if the temperature rose by just 0.5C in the next century. The climate is too cold at present for navy bean crops and most are imported from America and Canada. Daily Telegraph 8.1.94 Erosion-hit resorts pin hopes on reef of tyres By Richard Spencer and Lynda Murdin RESIDENTS along the fastest eroding coastline in Europe are hoping a plan to dump millions of tyres in the sea as a protective reef will be given the go-ahead by the Government. Villages and the resorts of Withernsea and Hornsea on the Holderness coast in Humberside are in danger of slowly falling into the sea. If the Ministry of Agriculture grants a licence for the trial tyre-reef scheme, it could lead to one of the most ambitious coastal engineering projects in Europe since the Dutch reclaimed its polders from the other side of the North Sea. The area from Hull to the low, muddy cliffs of the Humberside coast has always suffered erosion. Spurn Head, the spit of land which juts out into the Humber estuary, has been washed away and re-formed six times in recorded history, while many villages already lie underwater. But, in the past five years, the pace of change has rapidly increased. Some homes have been abandoned and farmers are seeking compensation for loss of land and buildings. The Humberside trial would submerge a bank of 1.5 million compressed tyres bound with nylon and concrete into a tangle of ropes six or seven metres high, 110 metres long and 60 metres wide. Placed up to 1,000 metres offshore, it would be tested for its stability, effects on local currents and pollution. If it worked, the full scheme could place more than a billion tyres in seven, two-kilometre long strips all the way up the coast. Humberside County Council accepts that such an ambitious project is unlikely to go ahead quickly – possibly not even this decade. In the meantime, the coast depends on smaller schemes under the supervision of Holderness Borough Council. The most recent, at the village of Mappleton, was opened with fanfares four years ago but, while it has saved the village, it has also caused resentment. Other villages say that it has accelerated the rate of erosion elsewhere by preventing the protective sand that drifts down the coast from reaching the beaches. It raised expectations that other schemes could be put in place, hopes the Government dashed in 1993 with a review of policy imposing new environmental and financial demands. The Department of the Environment is expected shortly to approve a controversial à ¯Ã‚ ¿Ã‚ ½4.5 million, 1,000-metre sea wall around the North Sea gas terminal run by BP and British Gas near Easington. A full plan, which would also have protected the village, was turned down by the department. Mr Robin Taylor, Holderness's director of development, said this appeared to be because under the new guidelines schemes had to prove not just â€Å"cost-beneficial† but to be in the national interest. Saving gas supplies probably was, saving villages not. Mr Ambrose Larkham, who owns the Easington Beach Caravan and Leisure Park, is demanding a public inquiry. â€Å"The ludicrous thing is it is almost as cheap to build 1,600 metres while the equipment's there as it is 1,000,† he said. Mr Taylor said: â€Å"The question of why we are protecting the terminals and not the people of the village is likely to become very controversial. The issue is whether we should be protecting multinational companies and not our own residents.† But Mr Geoffrey Twizell, terminal manager for British Gas and himself a resident, said: â€Å"We are happy to contribute to any scheme that meets everyone's aspirations. Nobody would be talking about any protection at all for Easington if it weren't for the gas terminals here.† Daily Telegraph 1.4.95 Essex drops its guard to let nature take its course By A J McIlroy A TACTICAL retreat could be the answer to coastal erosion on the Essex coast, Government engineers have decided. Contractors from the Ministry of Agriculture and English Nature yesterday lowered the sea wall to flood 21 hectares at Tollesbury Fleet on the Blackwater Estuary. The area is being restored to salt marshes intended to absorb the power of waves that have been pounding artificial sea defences. If the experiment succeeds it will be extended along the Blackwater and to other saltwater estuaries. Roy Hathaway, of the Ministry of Agriculture's flood and coastal defence division, said tracts of coastal marshes were lost when drainage engineers in the 17th and 18th Centuries built sea walls to reclaim land for farming. Now, as a result of the gradual rise in sea level, many of the hundreds of miles of sea wall are crumbling. These are costing millions of pounds to repair, a financial burden that is â€Å"becoming increasingly hard to justify†. He said that to encourage private landowners to accept coastal flooding, the Government had written a â€Å"saltmarsh option† into its set-aside programme, the European Union measure to take farmland out of production. In exchange for allowing their land to become inter-tidal again, farmers would receive à ¯Ã‚ ¿Ã‚ ½190 per hectare per year for grassland and à ¯Ã‚ ¿Ã‚ ½500 for arable land. The payments are guaranteed for 20 years. Mr Hathaway said the ministry was working with conservation groups to maximise the gain to wildlife by restoring the salt marshes. Daily Telegraph 5.8.95 SHORING UP THE COASTLINE By John Hodder THE PRETTY little Suffolk town of Woodbridge was snoozing under a cloudless sky, with a soft breeze taking the sting out of the sun. I gazed out over the placid surface of the River Deben. It was midday in midsummer and this was quiet, gentle England at its most benign – the sort of place, the sort of time that makes it hard to feel threatened by anything, let alone the forces of nature. Twenty-four hours later I was on the beach at Dunwich, 20 miles to the north. The conditions were not very different – the same blue sky and hot sun, cooled now by a rather more blustery wind coming off the sea. But here the threat felt very real – probably because here it is very real. Dunwich is at the mercy of the elements, as it has been down the centuries, and the cliffs just carry on crumbling. If the sea is left to its own devices over the next 70-odd years, the shoreline will retreat by about 200 metres. That, at least, is the experts'projection. Projections, of course, are not the same as firm predictions. But they underline what the problem is – in this case, chronic erosion. The first and obvious question is: â€Å"What can be done to stop it?† The second and much more taxing one is: â€Å"Should anything be done to stop it?† Neither question has an easy answer. If Dunwich is not simply to be abandoned to its fate, a difficult balance will have to be struck between its interest and those of its neighbours. Coastal protection is a tricky science. Nobody knows that better than Roy Stoddard. His title is senior engineer (coast protection) with the Suffolk Coastal District Council and it was to pick his brains that I had gone to Woodbridge. His job is to oversee the 30-mile stretch of coastline from Felixstowe to Southwold, an area whose sand and shingle beach is notoriously unstable when pounded by the waves of the North Sea. It has suffered grievously in a series of violent storms this century. The task of looking after it is now shared between the local authority and the National Rivers Authority (NRA), overseen by the Ministry of Agriculture, Fisheries and Food (MAFF). They work closely together and their common enemy is the sea. The approach to coastal protection has shifted significantly over the past 20 years. â€Å"‘Fight against the sea' was the message until the 1970s,† says Stoddard. â€Å"Now we are not trying to fight against it so much as to work with it, using its peculiar ways to destroy its own energy.† That shift in approach is reflected in marked changes in the sort of barriers now being erected to stem the apparently relentless advance of the waves. As a result, the traditional beach scene is changing. For example, the solid sea walls built behind the beach – and the wide promenades that have accompanied them since Victorian times – are now out of favour. Walls merely repel the waves: they do nothing to reduce their speed or power, which is now recognised as the key to the successful preservation of the shor e. Instead, efforts are being concentrated on protecting and building up the beaches themselves. Similarly, a profusion of timber groynes jutting out at right angles into the sea – the time-honoured means of defence and a common sight along this coast – is seen as far less effective than a few large, rock-based structures shaped like fish-tails. The old wooden ones are fine for leaning against while you have your lunch or sheltering behind on a cold, blowy day. But they are not good at sheltering the shore. The main problem with them -apart from their propensity to rot – is that they cannot be made long enough or deep enough to significantly slow down the incoming rush of water. Hence the move towards the new fish-tail variety. A series of these has been built at Clacton, 20 miles to the south of Stoddard's patch. He is now proposing to develop the concept further by building two similar groynes at Cobbolds Point in Felixstowe, using rock and concrete. Despite their size, which might be considered ugly and intrusive, few people dislike them, he says, and the arguments in their favour are compelling. By confronting the sea farther out they do much more to take the steam out of the waves before they reach the shore. And the farther out you go, the more shore you protect by creating two calm areas in the lee of the two wings of the â€Å"tail†. Thus you help to build up a long stretch of sheltered beach. â€Å"Fish-tailed groynes are many times the length of wooden groynes but you only need one about every kilometre rather than one every 20-30 metres,† says Stoddard. â€Å"As well as being more environmentally-friendly because they enable people to walk along the whole beach – something they couldn't do before, at least not without stepping over groynes every few yards. â€Å"They have another advantage over sea walls. If you build them and find they don't work as well as you'd like, you can pick them up and move them. You can't do that with a massive sea wall.† Stoddard sees the introduction of fish-tail groynes as a â€Å"soft-engineering solution† in contrast to the old â€Å"hard† solution of building walls, which is now seen as causing more difficulties than it solves. â€Å"The problem is that whenever you build a hard wall it is almost invariably accompanied by the beach levels falling. The sea is thrown back off the wall and drags the sand and shingle out. Sometimes the wall itself is undermined – you can shore it up but in time the same thing will happen again.† Solid walls are the most concrete (literally) expression of the view that you must at all costs protect the land against the sea. That view is now being challenged. â€Å"You have four options,† says Stoddard. â€Å"Do nothing, hold the line, advance or retreat. Ten years ago the general view was that everything that could be saved should be saved. Now people are far more aware that harsh decisions have to be made.† Such decisions have worrying implications for places like Dunwich. There, to stop the erosion, you would have to start building some form of protective structure along the beach: merely reinforcing the shingle bank is not enough to stop continuing inroads being made into the coast. So why the hesitation over doing something more effective about it? Simply this: the erosion of the cliffs at Dunwich has positive benefits for the beach immediately to the south at Sizewell. Dunwich's loss is thus Sizewell's gain: that is nature's way. It is a conundrum repeated all along the coast. â€Å"If you have got to save the cliffs at Dunwich, you've got to find alternative means of feeding the beach at Sizewell,† says Stoddard. â€Å"In the end, you have to say that there are some places you won't protect – and people have got to come to terms with that.† Such a hard-nosed attitude can stir up fierce emotions, not least because of the way it could affect both the people who live there now and those who would like to join them. Consequently, it has serious implications for local planners. Do you, for example, go on allowing people to build houses near the sea, thus continually extending the number of years that you have to go on protecting that particular bit of coast – probably at someone else's expense? Another issue arousing controversy is the question of compensation for landowners whose land is gobbled up by the sea. At the moment there is no provision for compensation – indeed, it was specifically excluded from the 1949 Coast Protection Act. But as Stoddard says: â€Å"How do you tell a farmer that his 500 acres of productive arable land would be far better as salt marsh? The question of compensation is going to have to be addressed very shortly.† The difficult questions roll in almost as relentlessly as the sea. I pondered them late at night as I walked the beach at Aldeburgh, with the wind strengthening from the north-east and the waves crashing on to the shingle. They were still nagging away later still, as I lay in bed listening to the roar on the shore just below my hotel window. The sound that had been so soothing in the summer sunshine had taken on a darker edge. Suddenly the forces of nature seemed far less benign. Leisurely progress coastal protection has developed piecemeal over the past 150 years, driven not so much by pure science as by the demand to fulfil social expectations. It was essentially that pressure which led to the widespread introduction of sea walls. From the mid-19th century wealthy Victorians sought the development of coastal resorts. To realise their leisurely ambitions, engineers were drafted in to build the walls and the promenades which went with them. Over the years it has become increasingly obvious that such a haphazard approach is unsatisfactory and that activity on one bit of the coast could have damaging effects on another. The need for greater planning and co-ordination, recognised in the 1949 Coast Protection Act, is now universally acknowledged: it will be reflected in the six new shoreline management plans that are being prepared for the whole of the east coast, from the Humber to the Thames. 26.8.95 From Compton's Complete Reference Collection Landforms that result from erosion, or wearing away of the land, make up some of the most scenic coastal areas in the world. Sea cliffs that border many rocky coasts are an example. These cliffs were created when pounding waves weakened the lower portion of the rock to the extent that parts of the cliffs above tumbled into the water, leaving a rock wall with rubble at the bottom. Solid rock shores that lack beaches are easily destroyed by the sea. Beaches consequently protect the shore. Sometimes groins (short piers that extend out into the sea from 30 to 200 meters, depending on the nature of the beach) are constructed to protect the shores from erosion. This has been done along the coasts of the Black Sea. In recent years, some beaches have been artificially restored with sand taken from the sea bottom or from nearby dunes. This has been done on many beaches in the United States and on the island of Norderney in the North Sea.

11 incredible ways to satisfy a womans breasts

11 incredible ways to satisfy a woman's breasts Of course, the first thing many people notice about a woman after her smile and her eyes are her breasts. There is nothing to be ashamed of because we all know what it is. We spend a lot of time checking them in broad daylight, but we cannot satisfy them and give them the attention they deserve when the lights go out. Men usually walk between the legs of a woman as they enjoy more and ignore the breasts. According to sexologists, a womans breasts are an area of great pleasure, but for men, she is somewhat misunderstood because they have no breasts. Most of the information we gather about breasts comes from media and pornography. Also, read the logical reasons why men love breasts and that makes sense. We bring you 11 extraordinary ways to satisfy a womans breasts. The understanding of all breasts is not the same The fact that it satisfies one partner in the past does not mean that the same will be enough for your next partner. Many women want breast stimulation in the form of soft, sweet jokes, and some want it rough and curly. You have to understand how to satisfy your wife first. Start slowly, until you know what you like Do not catch it the way you started the previous game, let your fingers gently touch the skin around the nipples and surrounding areas of the breasts as you inhale warm air over them. Be a ridicule Try to kiss her breast, but ignore her nipples for a few minutes and always look at her face to gauge her reaction, it helps her to understand how much she loves and how much she loves her breasts more than you. Tease 2 Breathe it seductively, but do not make physical contact before your body twists. This may require some self-control, but the accumulation is worth it if you feel a tingling sensation when she has an orgasm. Behind Try to cut your breasts from behind while kissing your neck, gently caress your fingers and put your hand across your chest for more excitement. To satisfy it more, you can gently press the nipple with your index finger and massage it in a circular motion until it hardens. Communicate without disturbing the mood During sex, ask your wife how she feels, plays and plays with her breasts or does what she likes. This sounds uncomfortable, but this communication will benefit both and make the sexual act more enjoyable Also, read 25 strangely satisfying pictures on the internet that will appeal to all perfectionists! Let her be the teacher Give her the power to be her teacher during sex. Ask her to keep her breasts with what she expects of you, it will make her more erotic and enjoyable. Grab a Doggystyle from the back or put your own hands on her breasts when she climbs on you so she can show you how she likes to be touched. Pay attention to your reactions and your breathing Concentrate on what happens to the rest of the body, your breathing, your moans, your redness, but never ignore the breasts, for sexual arousal causes more blood flow to the breasts and often causes breast tissue. Swelling up to 25%, your skin on the breasts will turn red and the areolas will darken, indicating that they are having fun. If she wants to play more abruptly, she relaxes something A woman likes to have some sort of control over her chest, making her a bit rough and perverted, making her sexier. You can use nipple clips or use your teeth, a little pressure can make it warmer for you. Use different sensations Try to make it risky by using a combination of hot and cold keys that can be as exciting as pliers like ice cubes, silk and lace, which can be super hot for many women and really fun. Praise be the woman If you really love her breasts, tell her why worship is the strongest aphrodisiac and that it helps to increase her mood, libido and sexual response. Gently seducing a woman with the right touch will satisfy her and warm things up in the room faster, and surely turn good sex into good sex.

Tracking An Offender After a Crime Research Paper

Tracking An Offender After a Crime - Research Paper Example This essay analyses the case of O.J Simpson and the offences that he committed. The main aim of this essay is to show knowledge of the criminal Justice system and the processes involved in this institution (Uelmen, 2009. His case was presided over by Judge Lance. The case of Simpson was characterized by hiring of a highly professional defense team, which was initially lead by Robert Shapiro. Simpson was arrested in police car chase in Los Angeles. His arrest was a public arrest and it was watched on the national television by the national audience. During the time of Simpson’s arrest, he was running away from Los Angeles. The police managed to locate him through a vehicle that his friend was driving. Simpson explained to the police that he had a firearm and he would commit suicide if the police would stop his car by force. The police on a cellular phone promised that they would not stop him forcefully. This event was aired in the television since the Los Angeles Helicopters captured the scene. His arrest and trial ignited a national debate of race, corruption in the legal system and fame resulted into a highly publicized case (Uelmen 2009. Simpson was arrested and tried on 20th June and he pleaded not guilty for both murders. As it is stipulated in the United States constitution, the judge ordered that he should be held without bail. On the day that followed, the re was a conference of a jury so that they could discuss and reach a consensus whether they should indict Simpson for the two murders. The jury was later dismissed after two days when due to excessive media coverage. This was done because it appeared as if the media coverage in this case would affect neutrality of this case. Jill Shively was the witness of this case who testified to the judges that he had actually seen Simpson when he was speeding away from the area surrounding Nicole’s house during the night of the Murder (Rantala 2001). The second witness of this

Uses of Electron Microscope Essay Example | Topics and Well Written Essays - 6250 words

Uses of Electron Microscope - Essay Example The light microscope was invented in the 17th century from the Galilean telescope. Antony van Leeuwenhoek, a Dutchman developed one of the early microscopes which consisted of a powerful convex lens and an adjustable holder for the object being studied. This instrument had a magnifying power of 400x and protozoa, spermatozoa, bacteria and shape of the red blood cells were discovered by Leeuwenhoek (FEI company, 2008). This microscope had only one lens and was called a single microscope. An improvement on this was compound microscope wherein another convex lens was added to magnify the image produced by the first lens. A modern light microscope has a magnification of as high as 1000x and thus enables resolution of objects separated by 0.0002mm (FEI Company, 2008). The resolving power of light microscope had 3 limiting factors: lenses, quality of lenses and the wavelength of light used for illumination. Some improvements in the light microscope were made using these aspects. Blue or ul traviolet light with shorter wavelength gave a small improvement. Further improvement in the resolution was noticed when the specimen and the front of the objective lens were immersed in a medium like oil with high refractive index (FEI Company, 2008). As early as the middle of 19th century, microscopists realized that structures less than half a micrometer could not be resolved with a light microscope. At the same time, researchers had hinted at the possibility of improvement in the resolution of the microscope using electrons rather than light. This is because accelerated electrons behave in a vacuum just like light, they travel in straight lines and have a wavelength which is about 100,000 times smaller than that of light.  

The Universality of Roles and Responsibilities Essay

The Universality of Roles and Responsibilities - Essay Example The study will also seek support from the views contradictory to the ones presented by Clark in order to make a comparative examination of the entire scenario under consideration in order to draw out convincing conclusion subsequently. Since the contemporary era has introduced the new division of labor in the wake of the growing responsibilities in almost all cultures of the globe, the critics and analysts also look into various matters by assigning extra obligations to both the genders in order to tackle with the challenges modern life offers to man. Stephen Clark, in the light of the anthropological studies, elucidates the concepts of various types of family setups, including patriarchic, matriarchic, neo-local, polygamous, polyandrous and monogamous etc (35-36), which seeks their roots in different traditional and conventional cultures of the world at large. Consequently, some cultural traits submit to male dominance in political, social, economic and domestic affairs, while the s ame supremacy is attributed to females in some societies of ancient, medieval and modern eras at large. Hence, the division of labor has always been established divergently in various zones and regions of the world (36). Though in some primitive societies, women appear to be responsible for the fulfillment of the economic needs of the entire family, while males were supposed to nourish and look after the young ones (Ember & Ember 2011); nevertheless, an overwhelming majority of human cultures assigned political, economic and social obligations to their male stratum, while females were responsible for all domestic chores including cleansing of house, washing and child rearing etc (Schlafly 2003). As a result, history is replete with the far active and dynamic participation of males in state affairs on the one hand, and their exclusive involvement in the activities related to hunting and gathering, and trade and commerce in general (Bartky 2003). Similarly, Midgley & Hughes (2003) all ude to the nature-nurture debate while elaborating the differences in gender roles, where they regard male-female differences as an outcome of a genetic constitution on the one hand, and due to the socialization process of the individuals on the other (222). Bartky (2003) analyzes the male-female division of labor in the light of Marxist perspective, where male play the role of producer/owner, while females serve as workers and laborers i.e. proletariat, who pay time and services to the products i.e. children and home, which actually belong to men (223-24). Hence, they undergo exploitation by receiving just eye-wash against their contributions for home, but the lion’s share goes to the producer i.e. males, who offer the least share of the profit to the proletariat, leaving them at the state of uncertainty and disappointment subsequently (226). On the one side, Bartky condemns unequal distribution of status between the genders; and on the other side, Okin (2003) declares the i nstitution of marriage as the source of complete exploitation of women both inside and outside the home as wives and professionals respectively (238-39). Hence, she presents a scenario that presents an entire feminist perspective in it, where the women appear to be the target of humiliation, hatred, domestic violence etc.  

The Zoot Suit Riots Essay Example | Topics and Well Written Essays - 750 words

The Zoot Suit Riots - Essay Example The Zoot Suit Riots In a sense, the Sleepy Lagoon Murders were part of what contributed to the zoot suit riots although they happened a year before the riots started. Sleepy Lagoon was a hangout place for Mexican youth. By day it was a place to swim and by night it was a lovers lane. It was one of the few places that Mexican American youth could go without having a hassle from prejudice. On August 1, 1942 two Mexican youth were sitting in the car talking and they were viciously attacked by what appeared to be a rival gang. The male, Hank Leyvas and his girlfriend were badly beaten. Hank went back to find the youth with reinforcements and attached other youths that were attending a birthday party nearby; Josà © Dà ­az was one of those attending. Dà ­az was killed in the "rumble" and a call to action went out from the Los Angeles Police Department. In the process Leyvas and 21 other Mexican youth were convicted of the murder through the Los Angeles tabloid journals and Leyvas was sentenced to life in S an Quentin. A few months later the zoot suit riots broke out and this would be one of the worse problems in Los Angeles history. In order to understand the zoot suit riots, it is important to understand a little about the zoot suit culture. Zoot suits were a popular dress that African Americans wore during the jazz era. It was a flashy outfit and it was a bit outrageous. It had broad shoulders, a narrow waist and balloon pants. It was a way of expression that let people of color be seen in places that society said they were supposed to be invisible. The Mexican American youth picked up the culture and ran with it.

No topic 8 Essay Example | Topics and Well Written Essays - 250 words

No topic 8 - Essay Example Establishment of friendships is important for all children since it teaches them the importance of others in their lives. They learn to understand what others are like and how to please them. This is an important aspect of positive behavior. They learn to communicate with each other and understand others’ beliefs, attitudes and standards. They learn to respect their peers and teachers. This respectfulness makes them achieve good place in the eyes of their educators. They also learn to share things and enjoy being a part of a collaborative environment. They learn to be compassionate toward others and be honest with their work and belongings. They learn to understand each others’ perspectives. These are all the attributes of a caring classroom community where the main focus of the educators is to inculcate in the children the best interpersonal and social skills so that they are able to help themselves out of any difficult situation they might encounter within the school premises and are able to learn best lessons which they can apply to their family lives

The Communist Manifesto Essay Example | Topics and Well Written Essays - 500 words

The Communist Manifesto - Essay Example This is because the framework of our society has been modeled by the elite groups who have structured the financial markets in a way that they achieve the maximum financial gains and keep on becoming richer whereas the working class does not gain much benefit. Thus, the rich individuals keep on becoming richer whereas the working class still struggles owing to their financial crisis. The existence of classes in the society is due to the persistence of capitalism where all the profits and the gains go in private hands and are not distributed evenly. Thus, the wealth remains in the hands of few and the working class keeps on struggling for financial benefits. A change is needed in the society so that equal opportunities of achieving success are created for all the members of the society. The working class and the elite groups are both reliant on each other and one cannot function properly without the other one. This can be understood as the upper class invests and it is the working cla ss that works to reap the investment and provide for profits. When the functioning of both the classes runs hand in hand, the success should also be equally shared rather than the bounties only being granted to the upper class. The maximum share of the benefits is only gained by the elite class and thus they keep on becoming richer and this leads to an increase in the gap between the rich and the poor.

Persuasive Research Paper on ( Gun Control) Example | Topics and Well Written Essays - 750 words

Persuasive on ( Gun Control) - Research Paper Example There were 280 million firearms in private hands in America in 2005 and there were only 300,000 gun crimes (Kessler 46). For Kessler, this means that at least 279,700,000 guns did nothing wrong (46). Further, Kessler added that in 89% of the crimes, the person who used the gun was not the one who bought the gun (46). Kessler interpreted the data to mean that the root of America’s crime problem is not the number of guns in the hands of American (46). Kessler’s key argument is that American should not restrict gun rights but should â€Å"deepen† instead the sense of gun ownership (47). In a way, Jim Kessler hit the nail on the head. Indeed, deepening the sense of gun ownership will probably decrease the crime rate. However, this sense of ownership can be deepened not through liberal gun laws but by regulating people’s access to guns. This should not be interpreted as curtailment of rights. In the same way that the right to free speech is moderated by libel laws, the rights to gun ownership will have to be moderated by society’s consideration for the general good. This is because not all persons are ready enough to own guns. Not all individuals are responsible enough to have unhampered access to guns. Responsible gun ownership is promoted best not through liberal gun laws but through gun control. In 1993, Professor Martin Killias of University of Lausanne, Switzerland, examined the correlations between household gun ownership and rates of homicides and suicides using a gun in eleven European countries, Australia, Canada and the United States (Killias 1721). Killias found that there is a positive correlation between gun ownership and the rates of homicides and suicides using a gun in the fourteen countries (1721). In citing examples, Killias pointed out that the United States homicide was 3.7 times higher than Britain and the US suicide with a handgun was 175 to 1 compared with the US (1722). He

Kite Runner Essay Example for Free

Kite Runner Essay Hassan Amirs best childhood friend. He was often bullied by Assef and his followers Kamal and Wali. He was Alis son even though later in the novel, it is revealed that he is truly the son of Baba and Amirs brother. Late in the book, they allow us to know by saying that there is a special closeness that people who fed from the same breasts share. He was poorly educated and stood up for what he believed in, even if it meant dying for it. He always stood up for Amir no matter what the consequence, even if its him being raped. In the end of the novel, he does get shot for not giving up Amirs property after he had moved to America. Amir The main character who is the son of Baba. His mother died during childbirth. He always holds himself responsible and wonders what things would be like if his mother had not died. He has always looked up to Baba and wondered why Baba is so distant with his emotions. He befriended Hassan as a child and they became inseparable. He was educated and read to Hassan often but every so often he did become a victim of peer pressure and bullied Hassan even though Hassan would always stand up for him. Assef The bully in Amir and Hassans childhood story. He thought he was better than them both and always referred to Hassan as a Hazara, and wonders why Amir hangs out with him. Amir is a Pashtun which are referred to as the Real Afghans He later grew up to be a part of the extremist group called the Taliban and tried to control the people of Afghanistan. He ruled a trafficking system that Amir later saved a child from. Baba Amirs father who only wanted a better life for his son. Baba always tried to make Amir stand up for himself and tried to make his son be more like him. Baba is a very noble and well respected man, is not able to connect, nor understand his twelve year old son, Amir. This lack of understanding, leads to Baba not being able to satisfy the needs of Amir, as a father should. Baba is very renowned for being a rich but generous man in Kabul. With his wealth he does great things, he built an orphanage and often gives money to the poor, for this most people respect him. Baba is definitely an admirable man in most of his actions but he has some flaws just like everyone else does. One of Babas faults is his fathering skills, which he has little of, if any. As a single parent Baba tries to connect with Amir, but struggles deeply to find any common interests as they are very different people. He treated Ali as a brother and Hassan as a son (even though Hassan was his other son). He was intelligent and supported Amir. Amir and Baba were very close as father and son and had a strong bond that even in later life did not break. Rahim Khan He is Babas close friend and partner in business. He is also a mentor to Amir as he is growing up. Rahim Khan is constantly being a good listener for Amir and always asks to read Amirs stories. Rahim is a good man, and is always the voice of reason. After Amir leaves for America, he still wants Amir to be the man that Baba dreamed of him being. Soraya- is Amirs wife and because she is a woman in an Afghan society, her social status is significantly lower than a mans. She has a rather scandalous past that is talked about as gossip, but she points out that it would be different if she were a man in the same society. She stays the obedient daughter to her father for most of the novel even though their opinions clash sometimes. For example, she reads Amirs story even though her father forbids it. She wants to stand up to her father at the end of the novel when he worrys about what people will think when they find out she is living with a Hazara child. Instead of letting her stand up to her father, Amir stands up for his nephew and does it himself. Soraya is a character to represent the status of woman in a normal Afghan society which is a very low social status. Summary Amir is a young traditional Afghanistan boy that lives in Kabul. As child he is a kite runner with his friend Hassan who is also his servant. His father Baba dreams of a bigger and better life outside of Kabul. They soon leave for America and after leaving, Amit meets his bride to be Soraya (who was also from Afghanistan). They marry and live happily but Baba passes away. Amir gets an unexpected call from Rahim Khan telling him to come back and he is told that Hassan was shot by the Taliban and that he was Amirs brother and he had a son named Sohrab. Amir then goes to find his nephew but realized the Taliban has taken him into a trafficking system. Amir goes to save him and discovers that Assef is the one who had taken him. He then rescues Sohrab and takes him back to America to live without fear.

Developing self awareness reflection paper

Developing self awareness reflection paper Through attending the course of Knowing ourselves, knowing our world, I have increased self- awareness. Every week, I keep learning more and more about myself. Self awareness, according to Wong (2003), means recognition of our personality, strengths and weaknesses and likes and dislikes. Developing self-awareness can help us to recognize when we are stressed or under pressure. Self awareness also promotes effective communication and interpersonal relations, and also for developing empathy for others. After I have gone to the camp, I learn to face something I used to evade. I was raised up by my aunt when I was young. I always feel difficult to live in the love between my own parents and my aunt. These persecute me for long. All these years, I have never told the others about the above thoughts. I just want to escape from these things. However, I feel so pleased that I have finally let my thoughts released out when I told my classmates in the camp. I used to evade the problem of how to balance the relationships between my parents and my aunts and uncle. Learning to increase self- awareness, Rothman (1999) suggests that it brings increased openness to other ways of thinking and a greater insight into other kinds of life experience. I will not escape from tackling the relationships and I can know more about my deep self. This enables me to understand my clients when they have something used to evade. I can then guide my clients to release their feelings and increase openness. It does help me to be more aware of myself by knowing how my past experiences influence my personal values. Having an uncle who experience three marriages because of having other relationships outside of his marriage (with women from the mainland China), I personally dislike women who are come from mainland China, come to Hong Kong to marry a man and to grab our resources. I dislike like them as I think that they always intervene in their marriage. However, this hatred towards new immigrants makes me unable to make appropriate decision when a client who is a new immigrant seeks help from me. Furthermore, Biestek (1961) suggests that the relationship between the social worker and the client has been called the soul of casework. With such a bias, I may have personal value judgment and uncontrolled emotional attitudes toward the clients. As a result, it may be difficult for me to develop close relationship with the client. However, now I know and realize that my past family experiences are affecting my values and thoughts, Rothman (1999) suggested that it assists the worker to work with clients, and to control and minimize the influences of personal attitudes and beliefs that may be harmful and prejudicial toward clients. According to Rothman (1999), as an adult, one has his own viewpoint towards something. The most concerned part in self-awareness is about the unaware perceptions, especially those negative feelings towards the others, such as biases, prejudices or stereotypes. According to Rothman (1999), they are hidden inside and covered by acceptable excuses and rationale. Take several minorities for an example, general people usually have some negative personal feelings and comments towards the disabled, homosexuals, prostitutes, the street sleepers and so on. Unaware perceptions may be expressed in conversations, acts or behavior since they are hidden in the subconscious. Having these unaware perceptions, as a social worker, I may unconsciously say some words which hurt clients feelings and make them become defensive and do not trust in me. Thus making it hard to develop good relationship with the client and hard to have intervention processes. Besides, sharing my own feelings and opinions among peers can also help to make up my own viewpoint towards the population. I can know more about the peers attitudes and how the others react towards some issue by listening and sharing among a group of peers. By exchanging opinions in an overview, I can learn to think more comprehensively and to view an issue with different perspective. By gaining opinions and experiences from the others, I may then gradually change my former views towards an issue. When it comes to the social work profession, it is common to have values or attitude conflicts with certain aspects. Self-awareness promotes several essential traits, such as openness, acceptance, willingness, trust, knowledge, interest and courage towards the clients (Rothman, 1999). When social worker can have comprehensive thoughts and view towards an issue, it can enable social worker to have a better understanding on the perceptions of the clients. Even the opinions of clients is different from the social workers personal view, the social worker can give clients an appropriate advice without any bias and would be more comfortable and easy to deal with the circumstances with their attitudes, values and beliefs (Rothman, 1999).. Social workers role is to stands right on the clients situations to provide services for them according to their wishes and needs. Self-awareness enables social workers to assist clients in a suitable and appropriate way. According to Segal E.A, part of self awareness is understanding ones down personal problems and biases, and addressing them so that they do not interfere in work with others. As a social worker (in the future), self awareness enables me to know myself and be aware of their own values, assumptions, beliefs, strengths, and weakness, so that I am able to help the clients effectively. Rothman (1999) suggests that increased awareness brings increased openness to other ways of thinking and a greater insight into other kinds of life experience. So, keeping my mind open, as a social worker (in the future), I can then listen to clients sharing patiently, even when clients have other point of view different from mine, I can have an appropriate response and advice. Self awareness promotes effective communication and interpersonal relations, and so as developing empathy for others. These are all elements which enable social workers to provide skillful service and positive attitude to clients. Increasing self awareness do helps me with my professional development.

Novel Approaches to DoS Impact Measurement

Novel Approaches to DoS Impact Measurement J.Anto Sylverster Jeyaraj, C.Suriya, R.Sudha Abstract Over the past few years Denial of service (DoS) Attacks have emerged as serious vulnerability for almost every internet Services. Existing approach to DoS impact measurement in Deter Testbeds equate service denial with slow communication low throughput, high resource utilization, and high loss rate. These approaches are not versatile, not quantitative, not accurate because they fail to specify exact ranges of parameter values that correspond to good or poor service quality and they were not proven to correspond to human perception service denial. We propose Novel approaches to DoS impact that measure the quality of service experienced by users during an attack. Our novel approaches are quantitative, Versatile, accurate because they map QoS requirements for several applications into measurable traffic parameters with acceptable, scientifically determined thresholds, they apply to a wide range of attack scenarios, which we demonstrate via Deter testbed experiments Keywords Communication/network, Measurement techniques, performance of system, Network security 1. INTRODUCTION Denial of service (DoS) is a major threat. DoS severely disrupts legitimate communication by exhausting some critical limited resource via packet floods or by sending malformed packets that cause network elements to crash. The large number of devices, applications, and resources involved in communication offers a wide variety of mechanisms to deny service. Effects of DoS attacks are experienced by users as a server slowdown, service quality degradation, service degradation. DoS attacks have been studied through testbed experiments. Accurately measuring the impairment of service quality perceived by human clients during an attack is essential for evaluation and comparison of potential DoS defenses, and for study of novel attacks. Researchers and developers need accurate, quantitative, and versatile. Accurate metrics produce measures of service denial that closely agree with a human’s perception of service impairment in a similar scenario. Quantitative metrics define ranges of parameter values that signify service denial, using scientific guidelines. Versatile metrics apply to many DoS scenarios regardless of the underlying mechanism for service denial, attack dynamics, legitimate traffic mix, or network topology. Existing approaches to DoS impact measurement fall short of these goals. They collect one or several traffic measurements and compare their first-order statistics (e.g., mean, standard deviation, minimum, or maximum) or their distributions in the baseline and the attack case. Frequently used traffic measurements include the legitimate traffic’s request/response delay, legitimate transactions durations, legitimate traffic’s goodput, throughput, or loss, and division of a critical resource between the legitimate and the attack traffic. If a defense is being evaluated, these metrics are also used for its collateral damage. Lack of consensus on which measurements best reflect the DoS impact cause researchers to choose ones they feel are the most relevant. Such metrics are not versatile, since each independent traffic measurement captures only one aspect of service denial. For example, a prolonged request/response time will properly signal DoS for two-way applications such a s Web, FTP, and DNS, but not for media traffic that is sensitive to one-way delay, packet loss, and jitter. The lack of common DoS impact metrics prevents comparison among published work. We further argue that the current measurement approaches are neither quantitative nor accurate. Adhoc comparisons of measurement statistics or distributions only show how network traffic behaves differently under attack, but do not quantify which services have been denied and how severely. To our knowledge, no studies show that existing metrics agree with human perception of service denial. We survey existing DoS impact metrics in Section 2. We propose a novel approach to DoS impact measurement. Our key insight is that DoS always causes degradation of service quality, and a metric that holistically captures a human user’s QoS perception will be applicable to all test scenarios. For each popular application, we specify its QoS requirements, consisting of relevant traffic measurements and corresponding thresholds that define good service ranges. We observe traffic as a collection of high-level tasks called â€Å"transactions† (defined in Section3).Each legitimate transaction is evaluated against its application’s QoS requirements; transactions that do not meet all the requirements are considered â€Å"failed.† We aggregate information about transaction failure into several intuitive qualitative and quantitative composite metrics to expose the precise interaction of the DoS attack with the legitimate traffic. We describe our proposed approaches in Section 3. We demonstrate that our approaches mee t the goals of being accurate, quantitative, and versatile through testbed experiments with multiple DoS scenarios and legitimate traffic mixes. Conclude in Section 5. 2. EXISTING METRICS Prior DoS research has focused on measuring DoS through selected legitimate traffic parameters: Packet loss, Traffic throughput or goodput, Request/response delay, Transaction duration, and Allocation of resources. Researchers have used both simple metrics (single traffic parameter) and combinations of them to report the impact of an attack on the network. All existing metrics are not quantitative because they do not specify ranges of loss, throughput, delay, duration, or resource shares that correspond to service denial. Indeed, such values cannot be specified in general because they highly depend on the type of application whose traffic coexists with the attack: 10 percent loss of VoIP traffic is devastating while 10 percent loss of DNS traffic is merely a glitch. All existing metrics are not versatile and we point out below the cases where they fail to measure service denial. They are inaccurate since they have not been proven to correspond to a human user’s perception of service denial. 3. PROPOSED APPROACHES TO DOS IMPACT EASURMENT 3.3 DoS Metrics We aggregate the transaction success/failure measures into several intuitive composite metrics. Percentage of failed transactions (pft) per application type. This metric directly captures the impact of a DoS attack on network services by quantifying the QoS experienced by users. For each transaction that overlaps with the attack, we evaluate transaction success or failure applying Definition 3. A straightforward approach to the pft calculation is dividing the number of failed transactions by the number of all transactions during the attack. This produces biased results for clients that generate transactions serially. If a client does not generate each request in a dedicated thread, timing of subsequent requests depends on the completion of previous requests. In this case, transaction density during an attack will be lower than without an attack, since transactions overlapping the attack will last longer. This skews the pft calculation because each success or failure has a higher influence on the pft value during an attack than in its absence. In our experiments, IRC and telnet clients suffered from this deficiency. To remedy this problem, we calculate the pft value as the difference between 1 (100 percent) and the ratio of the number of successful transactions divided by the number of all transactions that would have been initiated by a given application during the same time if the attack were not present. The DoS-hist metric shows the histogram of pft measures across applications, and is helpful to understand each application’s resilience to the attack. The DoS-level metric is the weighted average of pft measures for all applications of interest: DoS-level =, where k spans all application categories, and wk is a weight associated with a category k. We introduced this metric because in some experiments it may be useful to produce a single number that describes the DoS impact. But we caution that DoS-level is highly dependent on the chosen application weights and thus can be biased. QoS-ratio is the ratio of the difference between a transaction’s traffic measurement and its corresponding threshold, divided by this threshold. The QoS metric for each successful transaction shows the user-perceived service quality, in the range (0, 1], where higher numbers indicate better quality. It is useful to evaluate service quality degradation during attacks. We compute it by averaging QoS-ratios for all traffic measurements of a given transaction that have defined thresholds. For failed transactions, we compute the related QoS-degrade metric, to quantify severity of service denial. QoS-degrade is the absolute value of QoS-ratio of that transaction’s measurement that exceeded its QoS threshold by the largest margin. This metric is in the range (0,1] .Intuitively, a value N of QoS-degrade means that the service of failed transactions was N times worse than a user could tolerate. While arguably any denial is significant and there is no need to quantify its severity, perception of DoS is highly subjective. Low values of QoS-degrade (e.g., The failure ratio shows the percentage of live transactions in the current (1-second) interval that will fail in the future. The failure ratio is useful for evaluation of DoS defenses, to capture the speed of a defense’s response, and for time-varying attacks . Transactions that are born during the attack are considered live until they complete successfully or fail. Transactions that are born before the attack are considered live after the attack starts. A failed transaction contributes to the failed transaction count in all intervals where it was live. 4. EVALUATION IN TESTBED EXPERIMENTS We first evaluate our metrics in experiments on the DETER testbed [15]. It allows security researchers to evaluate attacks and defences in a controlled environment. Fig. 2 shows our experimental topology. Four legitimate networks and two attack networks are connected via four core routers. Each legitimate network has four server nodes and two client nodes, and is connected to the core via an access router. Links between the access router and the core have 100-Mbps bandwidth and 10-40-ms delay, while other links have 1-Gbps bandwidth and no added delay. The location of bottlenecks is chosen to mimic high-bandwidth local networks that connect over a limited access link to an over provisioned core. Attack networks host two attackers each, and connect directly to core routers Fig.2. Experimental topology. 4.1 Background Traffic Each client generates a mixture of Web, DNS, FTP, IRC, VoIP, ping, and telnet traffic. We used open-source servers and clients when possible to generate realistic traffic at the application, transport, and network level. For example, we used an Apache server and wget client for Web traffic, bind server and dig client for DNS traffic, etc. Telnet, IRC, and VoIP clients and the VoIP server were custom-built in Perl. Clients talk with servers in their own and adjacent networks. Fig. 2 shows the traffic patterns. Traffic patterns for IRC and VoIP differ because those application clients could not support multiple simultaneous connections. All attacks target the Web server in network 4 and cross its bottleneck link, so only this network’s traffic should be impacted by the attacks. Illustrate our metrics in realistic traffic scenarios for various attacks. We modified the topology from [8] to ensure that bottlenecks occur only before the attack target, to create more realistic attack conditions. We used a more artificial traffic mix , with regular service request arrivals and identical file sizes for each application, to clearly isolate and illustrate features of our metrics. Traffic parameters are chosen to produce the same transaction density in each application category (Table 3): roughly 100 transactions for each application during 1,300 seconds, which is the attack duration. All transactions succeed in the absence of the attack. bottleneck links (more frequent variant) and 2) by generating a high packet rate that exhausts the CPU at a router leading to the target. We generate the first attack type: a UDP bandwidth flood. Packet sizes had range [750 bytes,1.25 Kbytes] and total packet rate was 200 Kpps. This generates a volume that is roughly 16 times the bottleneck bandwidth. The expected effect is that access link of network 4 will become congested and traffic between networks 1 and 4, and networks 3 and 4 will be denied service. 5. CONCLUSIONS One cannot understand a complex phenomenon like DoS without being able to measure it in an objective, accurate way. The work described here defines accurate, quantitative, and versatile metrics for measuring effectiveness of DoS attacks and defenses. Our approach is objective, reproducible, and applicable to a wide variety of attack and defense methodologies. Its value has been demonstrated in testbeds environments. Our approaches are usable by other researchers in their own work. They offer the first real opportunity to compare and contrast different DoS attacks and defenses on an objective head-to-head basis. We expect that this work will advance DoS research by providing a clear measure of success for any proposed defense, and helping researchers gain insight into strengths and weaknesses of their solutions. REFERENCES [1] A. Yaar, A. Perrig, and D. Song, â€Å"SIFF: A Stateless Internet Flow Filter to Mitigate DDoS Flooding Attacks,† Proc. IEEE Symp. Security and Privacy (SP), 2004. [2] A. Kuzmanovic and E.W. Knightly, â€Å"Low-Rate TCP-Targeted Denial of Service Attacks (The Shrew versus the Mice and Elephants),† Proc. ACM SIGCOMM ’03, Aug. 2003. [3] CERT Advisory CA-1996-21 TCP SYN Flooding and IP Spoofing Attacks, CERT CC, http://www.cert.org/advisories/CA-1996-21.html, 1996. [4] R. Mahajan, S.M. Bellovin, S. Floyd, J. Ioannidis, V. Paxson, and S. Shenker, â€Å"Controlling High Bandwidth Aggregates in the Network,† ACM Computer Comm. Rev., July 2001. [5] G. Oikonomou, J. Mirkovic, P. Reiher, and M. Robinson, â€Å"A Framework for Collaborative DDoS Defense,† Proc. 11th Asia-Pacific Computer Systems Architecture Conf. (ACSAC ’06), Dec. 2006. [6] Cooperative Association for Internet Data Analysis, CAIDA Web page,http://www.caida.org, 2008. [7] MAWI Working Group Traffic Archive, WIDE Project, http://tracer.csl.sony.co.jp/mawi/, 2008 [8] â€Å"QoS Performance requirements for UMTS,† The Third Generation Partnership Project (3GPP), Nortel Networks, http://www.3gpp.org/ftp/tsg_sa/WG1_Serv/TSGS1_03-HCourt/Docs/Docs/s1-99362.pdf, 2008. [9] N. Bhatti, A. Bouch, and A. Kuchinsky, â€Å"Quality is in the Eye of the Beholder: Meeting Users’ Requirements for Internet Quality of Service,† Technical Report HPL-2000-4, Hewlett Packard, 2000. [10] L. Yamamoto and J.G. Beerends, â€Å"Impact of Network Performance Parameters on the End-to-End Perceived Speech Quality,† Proc.EXPERT ATM Traffic Symp., Sept. 1997. [11] T. Beigbeder, R. Coughlan, C. Lusher, J. Plunkett, E. Agu, and M. Claypool, â€Å"The Effects of Loss and Latency on User Performance in Unreal Tournament 2003,† Proc. ACM Network and System Support for Games Workshop (NetGames), 2004. [12] N. Sheldon, E. Girard, S. Borg, M. Claypool, and E. Agu, â€Å"The Effect of Latency on User Performance in Warcraft III,† Proc. ACM Network and System Support for Games Workshop (NetGames), 2003. [13] B.N. Chun and D.E. Culler, â€Å"User-Centric Performance Analysis of Market-Based Cluster Batch Schedulers,† Proc. Second IEEE Int’l Symp. Cluster Computing and the GridProc. Second IEEE/ACM Int’l Conf. Cluster Computing and the Grid (CCGRID ’02), May 2002. [14] J. Ash, M. Dolly, C. Dvorak, A. Morton, P. Taraporte, and Y.E. Mghazli, Y.1541-QOSM—Y.1541 QoS Model for Networks Using Y.1541 QoS Classes, NSIS Working Group, Internet Draft,work in progress, May 2006. [15] T. Benzel, R. Braden, D. Kim, C. Neuman, A. Joseph, K. Sklower,R. Ostrenga, and S. Schwab, â€Å"Experiences with DETER: A Testbed for Security Research,† Proc. Second Int’l IEEE/Create-Net Conf.Testbeds and Research Infrastructures for the Development of Networks and Communities (TridentCOM ’06), Mar. 2006. [16] D.J. Bernstein, TCP 22 Syncookies, http://cr.yp.to/syncookies.html, 2008.

Authoritarianism: Prevail, or Not? Essay -- Government Political Scie

â€Å"History proves that all dictatorships, all authoritarian forms of government are transient. Only democratic systems are not transient. Whatever the shortcomings, mankind has not devised anything superior,† Vladimir Putin once said this. With such a view of authoritarianism, there would be assumption that the entire world is on its way to seek such democracy if it is such a clear, correct choice. However, nothing is ever so simple, and this is not the case. In this essay I will take a look at how authoritarianism fails, as well as why it is able to prevail is some areas. Authoritarian forms of government do sometimes fail. The reasons for such failure include the public’s dissatisfaction with the current governmental regime, the emergence of relevant opposition, political negotiation with elites, the physical location as well as history of freedom in a given nation, and the deserting of the authoritarian leader. While there are legitimate reasons for nondemocratic regime failure and there have been great moves toward a more democratic world, there are also reasons authoritarianism is able to sustain and survive in some cases. The fairly recent back-slipping from democratic rule to nondemocratic rule, or authoritarianism, is contingent on many factors. Factors ranging from a state’s mineral wealth, to its history of repression, to the fact many new democracies are small and weak allow nondemocratic regimes to sustain and prevail in certain states. One of the first steps in the failure of authoritarianism is public dissatisfaction. There must be people within the state that are not content with the way the nondemocratic regime is governing. This sort of disapproval sets in motion a movement toward the breakdown of t... ...to represent the public interests. So, elites cash in on the resources while letting the rest of the nation suffer. Governments evolve and change all of the time. What makes a state fail or prevail as nondemocratic depends on very many things. And, although we cannot be sure what is to come for a given nation unquestionably, this paper is an overview of some basic, guiding tendencies and situations that cause a state to either fail or prevail as an authoritarian regime. Only time will tell what is truly in store for the world governing systems. Works Cited O'Neil, Patrick H., and Ronald Rogowski. "Chapterb6." Essential Readings in Comparative Politics. Third ed. New York: W.W. Norton &, 2006. 205-41. Print. O'Neil, Patrick H. "Chapter 6, Chapter 8." Essentials of Comparative Politics. Third ed. New York, NY: W.W. Norton &, 2007. 141-162+. Print. Authoritarianism: Prevail, or Not? Essay -- Government Political Scie â€Å"History proves that all dictatorships, all authoritarian forms of government are transient. Only democratic systems are not transient. Whatever the shortcomings, mankind has not devised anything superior,† Vladimir Putin once said this. With such a view of authoritarianism, there would be assumption that the entire world is on its way to seek such democracy if it is such a clear, correct choice. However, nothing is ever so simple, and this is not the case. In this essay I will take a look at how authoritarianism fails, as well as why it is able to prevail is some areas. Authoritarian forms of government do sometimes fail. The reasons for such failure include the public’s dissatisfaction with the current governmental regime, the emergence of relevant opposition, political negotiation with elites, the physical location as well as history of freedom in a given nation, and the deserting of the authoritarian leader. While there are legitimate reasons for nondemocratic regime failure and there have been great moves toward a more democratic world, there are also reasons authoritarianism is able to sustain and survive in some cases. The fairly recent back-slipping from democratic rule to nondemocratic rule, or authoritarianism, is contingent on many factors. Factors ranging from a state’s mineral wealth, to its history of repression, to the fact many new democracies are small and weak allow nondemocratic regimes to sustain and prevail in certain states. One of the first steps in the failure of authoritarianism is public dissatisfaction. There must be people within the state that are not content with the way the nondemocratic regime is governing. This sort of disapproval sets in motion a movement toward the breakdown of t... ...to represent the public interests. So, elites cash in on the resources while letting the rest of the nation suffer. Governments evolve and change all of the time. What makes a state fail or prevail as nondemocratic depends on very many things. And, although we cannot be sure what is to come for a given nation unquestionably, this paper is an overview of some basic, guiding tendencies and situations that cause a state to either fail or prevail as an authoritarian regime. Only time will tell what is truly in store for the world governing systems. Works Cited O'Neil, Patrick H., and Ronald Rogowski. "Chapterb6." Essential Readings in Comparative Politics. Third ed. New York: W.W. Norton &, 2006. 205-41. Print. O'Neil, Patrick H. "Chapter 6, Chapter 8." Essentials of Comparative Politics. Third ed. New York, NY: W.W. Norton &, 2007. 141-162+. Print.

Essay --

Our computers were originally bundled with built in programs that are readily available to use. These include  the security, multimedia, image editor, PC maintenance and so forth. But those embedded programs and features have basic functions only. There are a variety of free and useful softwares now that we can download to enhance and help your day to day life activities. Below is a short list of the most essential free software you can't afford to miss on your windows XP to Windows 8 operating system. Antivirus and Antimalware Protection Regardless of how you use your computer on a daily basis, keeping your computer healthy should be our first line of defense. Although our computers have built in firewalls, it has been a campaign to protect our computers by running antivirus and keeping the system up to date. No single tool can detect everything. An anti malware alone cannot protect your computer from viruses and vice versa. So as a solution, experts recommended to install one security tool (Micrsoft security essential, AVAST or AVG) that can protect your computer from threats while surfing the web, installing applications and opening files and attachments on your mail. Then install anti malware (malware bytes)to remove potentially unwanted softwares and any other infections found to make sure nothing has been overlooked. But on top of this, we should also maintain a good browsing habit and good downloading hygiene. Password management One of the reasons why accounts are easily hacked because people use simple passwords such as their kid's name, their last name, short phrases or sequential numbers so they can easily remember it. Many users also need to remember different passwords for their email, bank accounts, ebay log in a... ...oogle Docs. It is a web based suite developed by Google and its now integrated with the Google Drive. This web based service will allow the users to create and edit documents online in real time. This tool also offers word processing documents, drawings, presentation and spreadsheet and can also read Microsoft office documents. It can work on all operating system since its web based. NeoOffice has the same features with Apache and libre Office but it's designed to work with Mac OS only. The software has grammar and spell checker feature and can also read Microsoft formats. There you have it, we have showcased some of the essential software that you can't afford to miss on your computer. All these products have been tested already and although they are free ones, they are efficient as the paid version. These softwares are worth trying to without spending a dime

A kinetic study of the reaction between aqueous sodium thiosulphate and hydrochloric acid :: GCSE Chemistry Coursework Investigation

A kinetic study of the reaction between aqueous sodium thiosulphate and hydrochloric acid Aim: To carry out a complete kinetic study of the reaction between aqueous sodium thiosulphate and hydrochloric acid: Equation: Na2S2O3(aq) + 2HCl(aq) 2NaCl(aq) + S(s) + SO2(g) + H2O(l) PART A To deduce the order of the reaction with respect to the concentrations of sodium thiosulphate and hydrochloric acid the experiment will be carried out at constant temperature and the time interval between the addition of HCl and the obscuring of the ink cross on white paper by the solid yellow sulphur precipitate will be measured for a constant volume of solution that uses 3 varying concentrations of Na2S2O3(aq) while maintaining the concentration of HCl(aq) and 3 varying concentrations of HCl(aq) while maintaining the concentration of Na2S2O3(aq). The rate of the reaction can be determined by the calculating the amount of sulphur produced in the time recorded. This is given by the equation: Rate = Amount of sulphur Time The amount of sulphur needed to obscure the cross is assumed to be the same in each reaction so therefore, Rate = 1 Time Then, the data will be placed in a table to determine the effect of concentration on the rate of reaction and hence the order of both reactants can be formed. Adding up both orders of the reactants gives the overall order of the reaction. PART B To find out the effect of temperature on the rate of the reaction the time interval between the addition of HCl and the obscuring of the ink cross on white paper by the solid yellow sulphur precipitate at five different temperatures must be recorded. A graph showing time taken vs. temperature will produce a curve showing the effect of varying temperature on the rate of reaction. The Arrhenius equation ln k = ln A – (Ea / RT) can be shown graphically by plotting a graph of ln (t) against ln (1/T). The gradient of this graph = - (Ea / RT) which can be used to calculate activation energy. The y-intercept of the line = ln A where A is the Arrhenius constant for the reaction. Hypothesis: The rate of a chemical reaction can be obtained by finding out the change in amount (or concentration) of a particular reactant or product over the time taken for this change. Many factors affect the rate of a reaction, one of which is concentration. For any reaction to happen, the reactant particles must first collide. This is true whether both particles are in solution, or whether one is in solution and the other is a solid. If the concentration is higher, there are more particles in the same volume A kinetic study of the reaction between aqueous sodium thiosulphate and hydrochloric acid :: GCSE Chemistry Coursework Investigation A kinetic study of the reaction between aqueous sodium thiosulphate and hydrochloric acid Aim: To carry out a complete kinetic study of the reaction between aqueous sodium thiosulphate and hydrochloric acid: Equation: Na2S2O3(aq) + 2HCl(aq) 2NaCl(aq) + S(s) + SO2(g) + H2O(l) PART A To deduce the order of the reaction with respect to the concentrations of sodium thiosulphate and hydrochloric acid the experiment will be carried out at constant temperature and the time interval between the addition of HCl and the obscuring of the ink cross on white paper by the solid yellow sulphur precipitate will be measured for a constant volume of solution that uses 3 varying concentrations of Na2S2O3(aq) while maintaining the concentration of HCl(aq) and 3 varying concentrations of HCl(aq) while maintaining the concentration of Na2S2O3(aq). The rate of the reaction can be determined by the calculating the amount of sulphur produced in the time recorded. This is given by the equation: Rate = Amount of sulphur Time The amount of sulphur needed to obscure the cross is assumed to be the same in each reaction so therefore, Rate = 1 Time Then, the data will be placed in a table to determine the effect of concentration on the rate of reaction and hence the order of both reactants can be formed. Adding up both orders of the reactants gives the overall order of the reaction. PART B To find out the effect of temperature on the rate of the reaction the time interval between the addition of HCl and the obscuring of the ink cross on white paper by the solid yellow sulphur precipitate at five different temperatures must be recorded. A graph showing time taken vs. temperature will produce a curve showing the effect of varying temperature on the rate of reaction. The Arrhenius equation ln k = ln A – (Ea / RT) can be shown graphically by plotting a graph of ln (t) against ln (1/T). The gradient of this graph = - (Ea / RT) which can be used to calculate activation energy. The y-intercept of the line = ln A where A is the Arrhenius constant for the reaction. Hypothesis: The rate of a chemical reaction can be obtained by finding out the change in amount (or concentration) of a particular reactant or product over the time taken for this change. Many factors affect the rate of a reaction, one of which is concentration. For any reaction to happen, the reactant particles must first collide. This is true whether both particles are in solution, or whether one is in solution and the other is a solid. If the concentration is higher, there are more particles in the same volume

Axe commercial

The current Axe print advertisement in question is part of a global campaign to promote its new line of â€Å"Peace† products, trying to strike down the sexist image It had previously. Axe partnered with a non-profit organization called Peace One Day and alms to promote peace In the world by an anti-war agenda and also gender equality. An end to the gender wars. This Is an example of using polymers through the slogan â€Å"Make Love, Not War†, which Is the use of the phrase to Incorporate multiple meanings.The ad is directed at both males and females, unlike other Axe advertisements in the past, and so both men and women are considered the inscribed reader. According to the deputy executive director of Axe in London, David Kolkhoz, â€Å"It's a theme we've been playing with for a while now, the equilibrium of the sexes. This is Just the first time we've done it in this more serious way. † (Nude, 2014, Para. 9) The idea that Axe is moving into different territory by attempting to equalize men and women sexually is emergent discourse.Scripts of lust and hyper sexuality are giving way to scripts of â€Å"Make Love, Not War†. This can be seen as a desirable outcome for a female audience of the Peace products. If this Is a successful outcome, women's views on Axe will shift, they will purchase the products for their partners and profits will Increase. When the deputy executive director was asked If this new message of love and equality Instead of lust and gender wars was possible or believable in an Axe campaign, he stated that â€Å"the brand has been slowly evolving for a while now. † (Nude, 2014, Para. ) using war in an advertisement campaign is an ambitious marketing tool that Axe tries to combine gracefully with peace and sexuality. The scene of the ad is based in a war zone on a beach featuring an array of different scenarios. There are soldiers, fighter Jets, helicopters, a soldier with a flame thrower and smoke seeping into the sky in the background. Amidst all the chaos, there are waterfalls, couples in hammocks, people swimming, and airplanes in the sky are formed In the shape off heart. In the middle of the ad there is a women in a brightly colored dress In the arms off soldier.There Is a couple falling from the helicopter together, a couple flirting by a tank, and woman massaging a man on the beach sand. Filters are a profit motive and, In this case, one motive Is using war In the campaign. It is particularly affective because we are currently involved in a war. Promoting peace, by calling the product line Peace, is an active attempt of lifestyle communication. Making the hippie peace movement a cool comeback for the company. Ensuring consumers that Axe is trying to be part of the solution and not the problem.This creates a self-surveillance by which some consumers will purchase the Peace products to feel good about themselves using a product that promotes peace. This is a positive social ideology that many people strive for. Consumer's social position on this issue, war, create a negotiated reading of the product, and they purchase more. The reader Ex.'s senior director, Matthew McCarthy states, â€Å"Young people care deeply about the future. This generation Is socially conscious and more digitally connected than ever. † (Nude, 2014, Para. 0) The ewe Axe advertisement does not fully deviate from Its previous campaigns. The positioning of women in the ad is still very similar to previous ads, however, it's just these soldiers. They are not shown in uniform like the men, but they are in play clothes and are scantily clad in short shorts. There is a women on top of man massaging him and another in the arms of a soldier. To some, this is still a very sexist Axe ad. This is seen as an oppositional reading and in direct conflict with the social ideologies that the Axe executives are trying to portray.The reception of the ad is probably mixed due to split political ideolog ies in the world. Many people would take this campaign face value and feel that it is promoting world peace. Many people might view this as an attempt for Axe to finally end sexism in their ad campaigns. Others will see this as Just another sexist advertisement littered with sexism but Just shown in a different light. Analyzing media using these ideological methods is extremely interesting when you delve into detail and dissect every notion of an ad or an entire campaign.Looking at the ad from different ideological perspectives is eye-opening and interesting. Researching other ads was entertaining and the entire process is engaging. These are all positive aspects of the process. Sometimes difficulties arise when trying to decipher what ideologies are accidentally placed in an ad or what is purely intentional. Axe could have a specific agenda that may or may not be interpreted by certain audiences. This is a con when trying to analyze accurately. Overall, the ideological method of an alyzing media is very useful and thorough.

An A student

So much so that common phrases such as â€Å"An easy ‘A'† and â€Å"An ‘A' for effort† have emerged, while others insist that an â€Å"A† is closer to perfection Han it is to â€Å"a good effort†. Grades are supposed to be a numerical/letter representation of ones academic progress in a course or lesson. But more often than not, good grades become a goal and not a reward; thus students are striving for grades and not the knowledge which they represent. In his article â€Å"Making the Grade†, Kurt Westfield points out that students are often undeserving granted good grades.This allows the same students to graduate with a degree and find a Job, without the actual knowledge needed to strive in their field. Similarly, he then goes on to note that these under-qualified students that are now in the workplace aren't ready for the tasks at hand. Universities are sending students into their careers with the same immediate they had throughout chor eographs, find the quick and easy way to get the Job done. Consequently, Jobs and projects could be done incorrectly or left incomplete. The difference is, though, that when these real world Jobs are incomplete or incorrect, they can create real world problems and difficulties.The grading system was made with the intention that it would accurately reflect a dents performance in a class. It's commonly believed that if a student understands a subject well, they deserve an â€Å"A†. But for a student to actually deserve that grade, they must also complete the entire workload, whether they know they information or not. The grade in the class is determined by the amount of work the student completes correctly, and this is where the controversy starts. Some argue that if a student demonstrates that he/she understands the given subject, he/she should be given a passing grade (whether their work was completed or not).Others argue that if a student truly works their hardest and gives a strong effort in the class, they deserve a passing grade (whether their work was correct or not). At the end of the day though, if searching for a simple â€Å"A† grade in a class, one must be willing to work and study for that class, and complete each assignment with accuracy (easier said than done, of course! ). The source of the problem resides in the earliest years of the school system. Starting from a young age, students are being taught and prepared for the next school year instead of for life.Elementary school students are being prepared for adolescent, meddlesomeness are being prepared for householders, householders for college, etc. Each year of schooling teaches you Just enough to get through the next year. The problem is, though, that by the time the student reaches college he/ she is not ready for life as an adult, only for more school. Meaning that students are going into college with the idea that they need to pass, and not the idea that they need to be prepar ing for their future. Students aren't realizing that what they are learning is essential for their Job until it's too late and they are unable to perform.

Explore Dickens presentation of education in Hard Times Essay

Dickens’ presents The Victorian education system in ‘Hard Times’ in a fundamentally negative way, Dickens’ expresses the idea that having an imaginative aspect to our education is essential. He does this through satirising the education system and mocking the characters. Throughout the novel, it is a purpose of Dickens being satirical towards the education system. Dickens opens the novel with a satirical description of Thomas Gradgrind and his utilitarian educational methods as he teaches the room full of students â€Å"Facts alone are wanted in life† (9) Dickens satirises Gradgrind’s commitment to an education comprised only of facts as Gradgrind exaggerates that facts are the only essential thing in life. â€Å"Fancy† (14) symbolises imagination and wonder compared to facts. Dickens emphasise â€Å"Fact† more than he does with â€Å"Fancy† he does this by repeating â€Å"fact† itself, sounds more forceful. Gradgrind’s view on education is his children are to never imagine or wonder. Gradgrind rejects the concept of â€Å"fancy† or imagination; ‘fancy’ has nothing to contribute to understanding; only things that can be measured are important. Gradgrind’s disapproving rant on fancy â€Å"You don’t walk upon flowers in fact† (14) to the students underlines that fancy is bad and it should be â€Å"facts!† (14) In his satirical description of Gradgrind, Dickens’ aim is of what he experienced in the industrial England during his time when education varied vastly, according to location, gender, and class, meaning that Dickens view on Utilitarianism is shown in a satirical way, and his beliefs stood out throughout the novel, this indicates how the education system was controlled. Dickens uses characters’ names to continue his satire of the utilitarian education system prevalent in Victorian Britain. Mr Gradgrind breaks into the word â€Å"Grind† as a means to crush, signifying his method of grinding down the students’ individuality and any imagination they may have entered the school with. Mr M’Choakumchild, breaks into â€Å"me, choke, child† Dickens’ exaggerates with the name as we don’t think the new teacher is literally choking the children in his care, that this Fact-obsessed creature will only choke imagination and feelings out of them. â€Å"If he had only learnt a little less, how infinitely better be he might have taught much more!† (15) This highlights that the utilitarianism system would function much better, if it were not so strung on facts. If Mr. M’Choakumchild had learnt less and been practically involved with his students more and would have taught far better. This is criticizing the way the system works. Dickens is suggesting that in the utilitarianism system, suggesting that ramming facts into students might not be the most effective way of teaching them. Not everything can be reduced to facts alone. Mr Gradgrind and Mr Bounderby are the main representations of utilitarianism and followers of the system. In Louisa’s proposed marriage to Bounderby, Dickens shows us a disastrous consequence of Gradgrind’s system that denied everything but facts. â€Å"You have been accustomed to consider every other question, simply as one of tangible Fact† (97) This illustrates that Gradgrind, who is incapable of expressing his emotions effectively toward Louisa, edges her into a marriage with Bounderby by stating various facts and statistics to her. Louisa is hesitant to communicate her feelings towards him â€Å"she returned, without any visible emotion† (96) David Lodge’s ‘How Successful Was Hard Times?’ (1981) argues that Gradgrind’s ideology in his system is questionable, Lodge explains that it is a â€Å"primary index of what is wrong with his system† Mr Bounderby is also a character with utilitarian beliefs, doubtlessly one of th e major characters that has a firm belief in the system, â€Å"you may force him to swallow boiling fat, but you shall never suppress force him to suppress the facts of his life† (23) He signifies the very essence of his ruthless principles that only has room for facts and statistics. ‘Hard Times’ outlines that a utilitarian approach to life is unsuccessful and costs those who follow their imaginations become robotic and inadequate to the system. Imagination and heart is found in the circus where Mr Bounderby and Mr Gradgrind despise â€Å"No young people have circus masters†¦ or attend circus lectures about circuses† (23) Gradgrind implies that circuses are not like a practical schoolroom. Dickens represents Sissy Jupe as an influential character of the novel who presents the value of a warm heart and embodies feelings and emotions. She is seen as a complete failure of Gradgrind’s system. However Dickens and the reader judge her as a success. The young innocent girl mocked by the teacher and presented as the â€Å"dumb† girl in the start of the novel, gradually turns out to be the most key character in the whole novel. Since the foundational significance of fact and the removal of fancy that Gradgrind’s education obli ges, Sissy Jupe will never succeed. Nevertheless, in spite of the education, Sissy becomes a young woman who is able to maintain her own principles and beliefs. The contrasting descriptions of Sissy and Bitzer are shown in their appearance. For example Sissy is described as radiant and warm â€Å"dark eyed and dark haired† (11) referring to her as someone who is the face of vitality. However Bitzer is portrayed as â€Å"what little colour he ever possessed† (11) and â€Å"His cold eyes would hardly have been eyes† (11)) Demonstrating that he is cold and emotionless with no heart and all calculation. Dickens uses Bitzer to demonstrate that other students are influenced by him, showing that he is a follower of Gradgrind’s system, whereas Sissy is the foreigner to the system. The Utilitarian education system relates to the industrial town ‘Coketown’ which consists of factories and â€Å"large streets †¦ like one another †¦ people equally like one another† (27) The town is linked to a â€Å"painted face of a savage† (27) that is described as barbaric and uncultured, the children are being deprived from the â€Å"ill-smelling dye† (27) Dickens suggests the society that the children/workers are living in is unsanitary â€Å"Jail† (28) indicating that they have no escape from their problems. The utilitarian system stamps out all imagination in the pupils and prepares them perfectly for the life of drudgery. Dickens describes as their lot as ‘hands’ in Coketown’s factories. Education presented in ‘Hard Times’ is shown as satirical in Dickensian vision of Utilitarianism. This is because Dickens is able to create a fool out of the system cunningly. Furthermore it is certain that what Dickens has presented is humorous and convincing with making the utilitarian ideology seem absurd through the novel. I find David Lodge’s argument towards Dickens opinion as liberal and potent.