Friday, January 31, 2020

Magnetic Resonance Imaging Essay Example for Free

Magnetic Resonance Imaging Essay This measurable activity can be detected by a Magnetic Resonance Imaging, or MRI, machine. The machine created a powerful magnetic field which aligned the hydrogen atoms in the body. Radio waves are used to alter the alignment of this magnetization which causes the atoms to emit a weak radio signal that can be detected by the machine. The subject lies very still in the MRI machine, essentially a giant cylinder. A movement of more than 3 mm could render the image useless so absolute stillness is a necessity. The test can take anywhere from 15 minutes to 2 hours and during that time the subject will undergo various stimulants designed to alter the neural activity (MRI 2007). In regards to detecting deceit, the subject would undergo a series of questions while the neural activity is monitored. At least two companies have been established to use fMRI for lie detection purposes, No Lie MRI, Inc. and Cephos Corporation (FRMI 2007). They represent the latest in scientific achievement for detecting the truthfulness of people. Since this technique is so new, there will obviously be questions to its reliability. However, these questions will work themselves through as more research is done on this particular topic. Unfortunately, several court cases may have determined that this technique may not be admissible in court. On the federal side the court case Daubert v. Merrell Dow Pharmaceuticals changed how scientific â€Å"expert† evidence was determined to be admissible. According to D. Arthur Kelsey, the â€Å"pre-Daubert courts allowed scientific testimony when the underlying scientific theory or basis of opinion was generally accepted as reliable within the expert’s particular field† (Kesley 2006). This concept, as noted by Wikipedia entries, is known as the Frye test. It came about in 1923 in the case Frye v. United States which asked if the evidence was relevant and generally accepted. Modern critics complained that the Frye test was antiquated and did not allow for new, cutting-edge scientific evidence to be presented (Frye 2007). Other critics were concerned that if the evidence was allowed purely on relevance alone, too much scientific evidence include so called â€Å"junk science† would result. The Frye test was simply too simple for it to be used in the complex, modern world. An overhaul of that standard was needed. One man pushing for reform was Peter Huber. He wrote a book called Galileo’s Revenge: Junk Science in the Courtroom. The book asserted that junk science was destroying the American courtroom. His theory was based on two premises. First, the average juror was too stupid to understand what is and what is not junk science. The second premise was the result of junk science discourages companies from introducing better products in fear or being sued (Daubert 2007). In 1993, the Supreme Court revisited this issue to answer the modern problem of new scientific evidence. The ruling gave birth to the Daubert standard. This standard is based on two aspects: relevancy and reliability. The question of relevancy asks whether the evidence has anything to do with the case. Although some expert testimony can be related to a case, it may not necessarily be relevant to it. To determine whether evidence is considered reliable, the Supreme Court determined that the conclusions of the expert witness must have been derived using the scientific method (Daubert 2007). To meet the standard of the scientific method, four things are needed. First, the test or theory must be falsifiable, refutable, and testable. This is also called empirical testing. Second, it must be â€Å"subjected to peer review and publication. † Third, it must have a â€Å"known or potential error rate and the existence and maintenance of standards concerning its operation. † Finally, the theory and technique is generally accepted by a relevant scientific community† (Daubert 2007). Technically speaking the Frye test contained the last aspect of the scientific method, but it failed to include the first three. To summarize, the Daubert standard asks five questions from every new technique to determine if it is admissible. First, â€Å"has the technique been tested in actual field conditions (and not just in a laboratory)? † Second, â€Å"has the technique been subject to peer review and publication? † Third, â€Å"what is the known or potential rate of error? Is it zero, or low enough to be close to zero? † Fourth, â€Å"do standards exist for the control of the techniques operation? † Finally, â€Å"Has the technique been generally accepted within the relevant scientific community? (Daubert 2007)† Initial reaction was that of praise for the reform. However, according to the Tellus Institute the standard in practice has not been favorable. A 2002 RAND study showed a significant increase in the rejection of expert testimony of which 90% fell against the plaintiffs (Daubert 2007). The problem is judges are not scientists yet Daubert asks them to make scientific decisions. Essentially they because â€Å"amateur scientists. † In some states, plaintiffs prefer to use the state court because they tend to be friendlier to expert witnesses (Tellus 2007). Kelsey asserts that the Daubert shifts the question of who decides whether the scientific evidence is reliable from the scientific community to the judge. Under federal law, using the Daubert standard, the fMRI would questionable as admissible evidence. The problem is with the complex nature of the test itself. Although MRIs are generally accepted within the medical community, this concept is no longer used as a test since the Daubert standard replaced the Frye test. Judges now have to weigh whether or not the fMRI is reliable as evidence. For evidence to be considered admissible, the conclusions must derive from the scientific method. Unfortunately, one of the biggest critiques of the fMRI is how it does not follow the method of the scientific method. Wikipedia points out that â€Å"many theoretical models used to explain fMRI signals are so poorly specified that they are not falsifiable. † This is a central tenet of the scientific model. This only can exclude it as evidence and any good defense attorney will point that out to a judge. Also, critics claim that fMRI is simply a modern day phrenology. Phrenology is the theory that claims to be able to determine character and personality traits based on the shape of the head, according to Wikipedia (2007). This concept is derived by how fMRI looks for where hemodynamic activity occurs in the brain as opposed to how. Although this comparison is hardly fair considering one is not based on science and the other is. Nevertheless, it may be enough to have a judge throw it out as evidence. Relevancy also comes into question as the second part of Daubert. Although truth is always relevant in a case, are the specific subject’s results from an fMRI during questioning relevant? Based on this, most likely the fMRI would not pass the Daubert standard and not deemed admissible in court. This is unfortunate as the Daubert standard is essentially calling fMRI lie detection â€Å"junk science† when it is far from it. It is new science and the federal system does not allow for a practical way for new science to present itself. Rather it applies an old model against the new science. However, some states are making laws that allow techniques such as fMRI to be admissible. The state of Virginia is one such state that has sought to ensure that its evidence not fall prey to that of the Daubert standard. Kesley points out that Virginia disliked the Frye test more than the federal courts because it believed is yielded far too much power to the scientific community and not to the consensus of the specific jury. As a result in 1993 Virginia passed a law that used a then-existing Federal Rule of Evidence 702 to change its statues on how evidence was looked at. The Supreme Court also looked at the Federal Rule of Evidence and made its ruling on Daubert based on it. However, the Rule 702 has undergone 2000 amendments to make it into what is now the Daubert standard. Virginia, although it notes Daubert, refuses to accept any changes to the system (2006). Kesley goes on stating that expert testimony in Virginia must meet specific requirements. The assumption of the evidence cannot be speculative or rely on insufficient factual basis. It cannot contain â€Å"disregarded† variable, rely on â€Å"dissimilar tests,† or create an â€Å"illusory impression of exactness. † Judges do not deem the evidence reliable or unreliable. Instead they make what is called a â€Å"threshold finding. † Instead of ruling simply whether it is admissible or not, the judge determines whether a reasonable juror could distinguish between reliable and unreliable. Based on this, that state of Virginia would almost certainly accept the fMRI into evidence. Although the fMRI does not necessarily follow that of the scientific standard, this is not a basis to determine if the evidence is admissible in Virginia. So long as its relevancy is not questioned in its use, a judge will likely allow it to be used in court as evidence. Under Virginia statutes, the judge will only determine whether a reasonable juror could determine if the fMRI is reliable in the particular case. Even though there are questions to the fMRI’s exactness, the judge would still allow it to be presented. The Daubert cases shows how sweeping reforms, although well intended can result to a system worse than the one it replaced. By shifting focus from the experts to the judicial system, the Daubert standard placed a power on judges that they are ill-qualified to handle. It is also an insult to potential jurors that they are simply too stupid to determine for themselves what is and what is not. Although the scientific evidence can be confusing, the standard removed any chance to prove to a juror the evidence is indeed authentic, reliable, and trustworthy. The federal courts cannot go back to Frye. Frye opened the door to too much interpretation from the scientific community. Although one segment of the scientific community may agree with a piece of evidence, another may not. Which is correct? Are either correct? Frye left too many questions about the evidence and it yielded too much control to the scientific community. The federal system does need to adapt somehow. They cannot leave it they way it is. In contrast, the state of Virginia has provided a good, fair system for allowing scientific evidence to be presented. They, too, agreed that Frye was inadequate to be effectively used. It may have worked well in 1923, but it was time to move to the 21st century. However, Virginia did not make the mistake of shifting all the decision making from one group to another. Rather it diluted the power yielded by the scientific community and placed some control with the judged. Nevertheless it never removed the importance of the juror to the courtroom. Whereas the federal system seemed to treat the juror as unintelligent and not suited for big decision making, Virginia did not want to take away the big decision from the jurors. For the fMRI system it represents a new technological advance in lie detection. It also represents a new challenge to the courts. Based on the federal court case rulings, the fMRI system would not be allowed as evidence because it does not follow the scientific method. Despite all of its potential, the federal system removes this power tool because of a rigid standard applied to a dynamic technology. Most likely, this will only prevent the federal system from advancing. However, it may also motivate the federal system to change how it views evidence. FMRI, however, will be welcomed in Virginia as evidence. Despite its faults the Virginia system is flexible enough to accomidate new technology such as the fMRI, but is not too flexible to allow â€Å"junk science† to permeate amongst the other evidence. Between the two systems, in regards to how it is applied to fMRI, the Virginia system is more fair and realistic in today’s courtroom. Work Cited Daubert Standard (2007) Wikipedia Foundation. Retrieved Dec. 3, 2007 from http://en. wikipedia. org/wiki/Daubert_standard FRMI (2007) Wikipedia Foundation. Retrieved Dec. 3, 2007 from http://en. wikipedia. org/wiki/FMRI Frye Test (2007) Wikipedia Foundation. Retrieved Dec. 3, 2007 from http://en. wikipedia. org/wiki/Frye_test Haemodynamic Response (2007) Wikipedia Foundation. Retrieved Dec. 3, 2007 from http://en. wikipedia. org/wiki/Haemodynamic_response Kesley, D. Arthur (2006) Virginia’s Answer to Daubert’s Question Behind the Question. Retrieved on Dec 3, 2007 from http://www. ajs. org/ajs/publications/Judicature_PDFs/902/Kesley_902. pdf Lie Detection (2007) Wikipedia Foundation. Retrieved Dec. 3, 2007 from http://en. wikipedia. org/wiki/Lie_detection Tellus Institute (2003) Daubert: The Most Influential Supreme Court Ruling You’ve Never Heard Of. Retrieved Dec. 3, 2007 from http://www. defendingscience. org/upload/Daubert-the-Most-Influential-Supreme-Court-Decision-You-ve-Never-Heard-Of-2003. pdf Lie Detection (2007) Wikipedia Foundation. Retrieved Dec. 3, 2007 from http://en. wikipedia. org/wiki/Lie_detection

Thursday, January 23, 2020

Bethany Hills, Omemee Esker and Fleetwood Creek :: essays research papers

Stop 2: Glacial Lake Peterborough Glacial Lake Peterborough had many attributing spillways attached to it, feeding meltwater and sediment from the ice margin and or other glacial lakes. Much of the sediment that was deposited in Glacial Lake Peterborough came from either from the stagnant ice blocks located on the Oak Ridges moraine or from the Lake Algonquin drainage system. Much of the deposition in this lake was dominated by sediment stratification, which may have been largely influenced by thermal stratification. As a result of thermal stratification occurring in this glacial lake sediment inputs were greatly influenced depending on the different sediment densities between the lake bottom water to that of the incoming meltwater and if the inflow density was less/more than the bottom water than the lake water bottom, than new transport and depositional paths were created Depending on the type of path that was created, it would largely influence the rate and distance to which the sediment was transported. Stop 3a: Kettleby Till The Kettleby till is considered to be younger than the main till in the area because it may have been deposited by ice contact stratified drift. Ice contact stratified drift is normally deposited by meltwater in contact and or in close proximity to the ice sheet. Stratification and some sorting do takes place. Stop 3B: Bethany Hills Deltaic sands on southern Flank Yes this feature is the result of erosion and depositional processes however, it is not associated with the current water course. This feature may be the result of a Gilbert type delta that once occupied this area. Gilbert type deltas have three main components; topsets, foresets and bottomsets. Topsets are fluvial sediments (primarily sandur deposits) that were deposited on the subaerial delta surface. Erosive events occurring on the upper forslope can result in downslope channels and chutes. These features are then eroded by either strong currents or by debris flow resulting in these channels and chutes to become filled. Foresets are a combination of sand and gravel facies. The are deposited by gravitational processes on the delta foreslope and the grains tend to become finer and more angular downslope. Bottomsets consist of fine grained silts and clay and are deposited at the foot of the delta front. Stop 3C: Drumlin in older northern/Newmarket Till I believe that this drumlin is closely related to erosion and accretion hypotheses of drumlin formation. This is because of its location being close to a steep valley wall.

Tuesday, January 14, 2020

Reality Television Does More Harm Than Good Essay

1. Economy Reality TV stimulates the economy The Reality TV industry produces a stimulus for the economy. â€Å"If I pay a reality star 1/50 of what I’d pay Johnny Depp, my return is going to come back much quicker,† said Mark Young, a professor at USC’s Marshall School of Business. Judge, this is obviously a huge good that come out of reality TV. CNN reports that reality TV decreases unemployment rates in the US. â€Å"Career Makeover, a new series that promises to tap into the frustrating low points of millions of today’s out-of-work and underemployed Americans. The show will give viewers something that’s perhaps more telling than the government’s eagerly-awaited monthly employment report.† According to Washington Post, winning big on a reality television cooking show has helped catapult the careers of even established chefs. As Geoffrey Zakarin, a food network iron chef, stated â€Å"TV is the gigantic tide that lifts all boats† Advertising is also a huge factor since Tens of Millions of people watch reality TV- TIME Advertising†¦.as most know occurs during the show in the middle of small breaks between the show. Heres the twist. Reality TV has advertising inside the show. New York Times—->It is typically easier to weave a product into an episode of a reality show like â€Å"American Idol† or â€Å"Survivor† than into a scripted series like â€Å"Grey’s Anatomy† or â€Å"Two and a Half Men.† Lets give an example. Lets say there is a family in a reality tv show using a vacuum cleaner. The actors in the reality tv show would compliment the cleanliness of the vacuum cleaner and this is a form of advertising. Oregon State University—-> 23 million tuned in â€Å"Multi-Millionaire† and 51 million watched the finale of â€Å"Survivor†. This was an advertisers dream. This is why we see advertisers paying $2.1 million for sponsorship on â€Å"The Mole† The initial â€Å"Survivor† sponsors paid $4 million but â€Å"Survivor 2† price tag jumped to $12 million (Friedman, Harsh ‘Reality,’ 2000:4 & Grover, Off the Island, 2000: 48). How do the networks benefit? CBS collected about $52 million in advertising for the initial â€Å"Survivor† (Grover, Off the Island, 2000: 48). ABC’s â€Å"Millionaire† brought up it’s operating income by 33% (Lacter, â€Å"Blair Witch TV, 2000:64). The impact is that reality TV not only creates jobs and boosts employment rates, but it also boosts the economy and businesses through advertising. 2. It helps society Reality TV is an easy way to make money and stimulate the economy. It costs very little to run and It is cheap. It gives oppurtunities for many of the unemployed. As we said in our 1st contention, Career Makeover is giving oppurtunities. We have to take advantage. These shows teach others how to do different things. For example, Yankee Workshop teaches about building and constructing. American Idol and America’s Got talent shows the love of music. The Impact is that If you lose, you got an opportunity and if you win, you win an oppurtunity. According to Martha Airth-Kindree, executive director of  the Mile Bluff Medical Center Foundation, â€Å"Scores of people have been inspired by â€Å"The Biggest Loser†. † The popular reality television show is the inspiration for a new weight-loss program in Juneau County According to an article written by Dr. Michelle Golland, a mental health professional, she believes that reality tv can be a good thing. As she states in her article, the shows â€Å"Intervention† and â€Å"Obsessed† bring us into the lives of people suffering with mental health problems, drug and alcohol addiction, and obsessive-compulsive disorder. â€Å"Intervention† helps treat people who seek help on the show and also pays for their treatment, which many of them may otherwise be unable to afford. It also allows us to witness the damage inflicted on every person in an addict’s life and the devastating impact on them. This show can help those who view it to realize they need help, or encourage a family member to stage their own intervention with the help of a professional, which they may never have had the courage to do until watching it on TV. â€Å"Obsessed† is a painful display of people who have severe anxieties and are seeking treatment for them. The impact is that Reality TV helps society by helping the economy, teaching different things, inspiration for better health, and showing the world the lives of those with health problems. i accept your definitions and weighing mechanism so i will start with my contentions Contention 1: The sheer number of reality programmes is now driving TV producers to create filthier, more corrupt reality shows. Reality TV is actually getting worse as the audience becomes more and more used to the genre. In a search for ratings and media coverage, shows are becoming ever more vulgar and offensive, trying to find new ways to shock. When the British Big Brother was struggling for viewers in 2003, its producers responded by attempting to shock the audience that little bit more. â€Å"Big Brother† programmes have also shown men and women having sex on live TV, all in a desperate grab for ratings to justify their continued existence. Others have involved fights and racist bullying. Do we let things continue until  someone has to die on TV to boost the ratings? Contention 2: Reality TV encourages people to pursue celebrity status, and discourages the value of hard work and an education. Reality shows send a bad message and help to create a cult of instant celebrity. They are typically built about shameless self-promotion, based on humiliating others and harming relationships for the entertainment of each other and the viewers at home. These programmes suggest that anyone can become famous just by getting on TV and â€Å"being themselves†, without working hard or having any particular talent. Kids who watch these shows will get the idea that they don’t need to study hard in school, or train hard for a regular job. As John Humphrys points out, ‘we tell kids what matters is being a celebrity and we wonder why some behave the way they do. As American lawyer Lisa Bloom fears, ‘addiction to celebrity culture is creating a generation of dumbed-down women. Reality shows encourage such addictions and promote the generally m isguided belief that they should aspire to be the reality stars they watch on their televisions. Contention 3: Reality shows make for bad, lazy and corrupting television, encouraging such behaviour in society. They mostly show ordinary people with no special talents doing very little. If they have to sing or dance, then they do it badly – which doesn’t make for good entertainment. They rely on humiliation and conflict to create excitement. Joe Millionaire, where a group of women competed for the affections of a construction worker who they were told was a millionaire, was simply cruel. The emotions of the contestants were considered expendable for the sake of making viewers laugh at their ignorance. Furthermore, the programmes are full of swearing, crying and argument, and often violence, drunkenness and sex. This sends a message to people that this is normal behaviour and helps to create a crude, selfish society. One American reality show, â€Å"Are You Hot?†, in which competitors submit to a panel of judges for ‘appearance-rating’, was blamed by eating disorder experts as encouraging the notion that ‘appearance is the most important. Contention 4: Reality TV is dishonest – it pretends to show â€Å"reality† but it  actually distorts the truth to suit the programme makers. The shows are not really â€Å"real† – they are carefully cast to get a mix of â€Å"characters† who are not at all typical. Mostly they show a bunch of young, good-looking self-publicists, who will do anything to get on TV. Usually the programme makers try to ensure excitement by picking people who are likely to clash with each other. They then place them in unnatural situations, such as the Big Brother house or the Survivor island, and give them strange challenges in order to provoke them into behaving oddly. In The Bachelor, where a group of women compete for the affections of an eligible male, the ‘intimate dates’ they go on are filmed in front of any number of camera; that is not reality (Poniewozik, 2003). Finally the makers film their victims for hundreds of hours from all angles, but only show the most dramatic parts. Selective editing may be used to create â€Å"storylines† and so further manipulate the truth of what happened.

Monday, January 6, 2020

Ethical Dilemma Paper - 801 Words

Ethical Dilemma Paper CJA 324 Ethics in Criminal Justice Police officers are held at a higher form of ethical behavior and when they violate the trust bestowed upon them with the position they held, they entire department is viewed as a r corrupt agencies and all they service within that agency are bad people. Their professional responsibilities are driven by codes of ethics to assist them in executing their duties and to safeguard these higher standards of conduct. Everyday law enforcement officials are confronted with a maze of commitments in the implementation of their official duties. (Papenfuhs 2011) Even though law enforcement officials have these standards, they are still challenged with moral dilemmas. This mean the†¦show more content†¦(Papenfuhs 2011) In order to eliminate unethical conduct that police officers deal with, training must be centered on upholding the law. The power of individual influences upon people’s action shall correspond with suitable and equal punishment both in an encouraging and unconst ructive intellect. The outcome of the situation was that the officers were found guilty of possession, manufacturing, and selling illegal drugs. Under their plea agreement, they will serve 15 years to life in prison in a federal prison. Their agency is still trying to recover from the public embarrassment it received from their actions. (Papenfuhs 2011) In conclusion, if you are a public official and you wear a badge, reframe from doing anything that will land you in jail. When there is doubt about any situation that calls into your integrity and you are not sure what action to take? Talk to someone who may know. References: Papenfuhs, Steve. (April 6, 2011). Ethical Dilemmas Cops Face Daily. Retrieved on June 12, 2013 from http://www.policeone.com/legal/articles/3467115-Ethical-dilemmas-cops-face-daily/ Salonga, R. (February 17, 2011). Contra Costa drug force commander arrested in Benicia. Retrieved on June 12, 2013 fromShow MoreRelatedWorkplace Ethical Dilemma Paper1064 Words   |  5 PagesWorkplace Ethical Dilemma Paper BSHS / 322 Marcia Winter Introduction Weve all heard the golden rules: In today’s society it is hard to find a good paying job. When one finds a good paying job, that person needs to do whatever he or she can do to keep that job. Ethics can be a problem in a workplace if someone is asked to do something that they do not feel is right. â€Å"Ethics are about making choices that may not always feel good or seem like they benefit you but are the right choices toRead MoreAnalysis Paper: Ethical Dilemma1737 Words   |  7 PagesAnalysis Paper: Ethical Dilemma Last summer I had an opportunity to intern for a regional public accounting firm just outside of Philadelphia. During the internship, I encountered my first real on the job ethical dilemma. 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