Black Bear Population In New Jersey Essay free essay sample

, Research Paper Black Bear Population As the universe evolves, the figure of jobs confronting it increases with each passing twenty-four hours. The population Numberss of many species are lifting extensively. Several environmental factors along with scientific factors combine, ensuing in over-population. As more edifices, places, and concerns materialize, natural home grounds where animate beings live are destroyed, go forthing certain species irrupting in rural countries where they one time roamed freely. One peculiarly illustration of this job is the black bear population in New Jersey. The black bear population is turning excessively rapidly while their natural home ground is quickly diminishing. The Division of Fish and Wildlife estimates the black bear population in the province of New Jersey to be over 1,000. The same experts besides estimate that in five old ages, the black bear population will duplicate and turn out its highly fast rate of growing. As the black bears # 8217 ; natural eating evidences disappear, the reported figure of incidents between bears and worlds in New Jersey is on the rise. We will write a custom essay sample on Black Bear Population In New Jersey Essay or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page The black bear population is interrupting urban life by doing belongings harm, interrupting into places and autos, killing farm animal and pets, and establishing a general feeling of fright in the community. Peoples feel the demand to protect themselves, pets, farm animal, and belongings. This issue affects a big per centum of New Jersey occupants and calls for steps. Three possible solutions to turn toing this issue are carry oning legalized Hunts by hired professional huntsmans, aiming and euthanizing excessively debatable bears, or rejecting the killing construct and covering with the job in several different, non-violent ways. The first possible solution to command the black bear population in New Jersey is to form a black bear Hunt dwelling of professional huntsmans. Hiring trained, professional huntsmans, besides known as crisp taws, to carry on a two or three twenty-four hours Hunt entreaties to many New Jersey occupants. While many recreational huntsmans try to hit any and every bear they see, trained professionals kill the bears that they see as doing jobs in a populated country. Black bears, one time seldom aggressive, are turning bolder, from merely mauling trashcans to killing pets and farm animal. This twelvemonth, the figure of ailments of belongings harm is 157, the figure of place entry ailments is 26, the figure of livestock violent deaths is 21, the figure of beehives destroyed is 13, the figure of domestic favored coney violent deaths is 10, and the figure of ailments of pet Canis familiaris onslaughts is 7. In add-on, more than 30 vehicle work stoppages are happening between worlds and bear s. New Jerseyans have the right to desire to protect themselves, kids, pets, farm animal, and belongings against bears. A proposed bear Hunt of crisp taws would cut down the figure of black bears by up to 75 % over a three twelvemonth clip period, from more than 1,000 down to 250. The effects of a professional bear Hunt would non merely ensuing dramatic, immediate consequences, but would turn out to be safer, more efficient, and much lower in cost compared with several other options. As opposed to a regular Hunt where any accredited huntsman of any juvenile accompanied by a accredited grownup can take part, the sharp-shooter Hunt would merely be available to a choice group of hired huntsmans, after go throughing safety classs. This Hunt would non merely cut down the hazard of incidental hurts obtained by inexperient huntsmans, but would besides decrease the inhuman treatment towards the bears. Having first-class purpose and precise cognition of bear hunting, the sharp-shooter could kill each bear rapidly and painlessly with one slug instead than wounding the bear foremost and tracking it down to finish the drawn-out putting to death. The efficiency with which the professional huntsmans work, could finish the Hunt with several yearss, hence doing less of a break in the community. Many communities would see a great copiousness of recreational huntsmans if a legalized Hunt becomes available to them, but with the proposed the sharp-shooter Hunt, a fewer sum of huntsmans would get in the county. Last, experts estimate the cost of the sharp-shooter Hunt being less expensive than programs for relocating, sterilising, and euthanizing bears while educating the community and protection forces. An organized Hunt consisting of trained professionals proves to hold a lower cost than alternate solutions, to be a more efficient manner of using hunting clip, and to hold a higher grade of safety compared to a random Hunt. Targeting and euthanizing excessively debatable bears serves as the 2nd possible solution to covering with the black bear population in New Jersey. The province, place to over 1,000 bears, up from merely 50 bears in the late sixtiess, is having ailments about # 8220 ; bad-news bears # 8221 ; tipping refuse tins and moving sharply toward worlds. The figure of ailments are increasing drastically from 285 in 1995 to 1, 659 last twelvemonth. Under this 2nd solution, the Division # 8217 ; s Wildlife Control Unit will capture debatable bears, doing prope rty harm and other more serious jobs. After being captured, the bears go through the tagging procedure where experts besides remove the bears from the ailment site. Upon release, the bears receive intense antipathy therapy to modify their behaviour, including Piper nigrum spray, gum elastic slugs, and pyrotechnics designed to scare animate beings. â€Å"When we capture a nuisance bear, we’ll draw a tooth [ to find age ] , tattoo it, draw blood, step it, and do certain the experience is so negative that he won’t desire to travel near another homo, † studies John Cichowski, a Texas Ranger at the Great Smoky Mountains National Park. The Division of Fish and Wildlife studies that 82 % of antipathy therapy bears are no longer debatable after their release. Harmonizing to the Division Black Bear Policy, bears that repetition negative behaviours will be euthanized. Governor Whitman plans to modify the Policy, which authorizes the violent death of debatable bears, by bro adening the definition of debatable bears. Bears that enter places, putting to death farm animal, onslaught pets, or act sharply will be killed under her alteration, every bit good as bears returning to countries where they one time were a nuisance. This policy non merely will ensue in fewer deceases, but besides ensures a autumn in reported hunting hurts. This solution, non ever 100 % effectual, offers amore humanist position in covering with this job. Rather than declaring unfastened season on the full bear population, this option of conditioning and/or euthanizing debatable bears ensures that merely the bears presenting as menaces will endure the effects, whereas the peaceable bears non doing any problem are left to stay a portion of the community. The 3rd solution to the black bear population growing is take non-violent stairss to seek to let the bears to populate harmoniously with society instead than kill them at all. This controversial issue of killing or non killing some of the bear population is intensifying to a extremum. This solution option seems less barbarous, but besides less effectual. Many argue that the black bear has the right to be here sing that it is non an imported animate being. Environmentalists, animal-rights groups and 26 North Jersey municipalities protest planned bear Hunts, such as province Sierra Club President Jeff Tittel who argues # 8220 ; # 8230 ; the bear is one of nature # 8217 ; s last leftover symbols to stand in the manner of the suburbanization of the state. # 8221 ; Opponents dispute the bear ailment figures adding that non-lethal agencies particularly educational plans to forestall bear eating are all that is necessary to forestall most harm caused by bears. Covering with the safety i ssues, the menaces of hurts from runing disappear with alternate programs to command the animate beings, including relocating nuisance bears, supplying financess and preparation for constabulary to cover with the job, every bit good as and increasing the Department of Environmental Protection # 8217 ; s bear task force. Another non-violent manner to maintain the bear population from lifting any farther sit O sterilise them. When wildlife directors separately drag bears from their winter hibernation dens to weigh and mensurate them, to take blood samples, and to hang radio-transmitter neckbands around their cervixs, female bears could have a prophylactic injection at this clip, and the neckbands would take marksman months subsequently to the same animate being for a 2nd shooting. If even stronger action is deemed necessary, the females could be spayed and the males could be neutered during their winter physicals. True it would take several old ages to do a dent in the population, bu t the program would non harm a individual bear and still forestall excessively much genteelness from happening. Black bears, truly non-aggressive animate beings, huntsmans kill more people than do black bears. The human tolerance for the black bear is down. In 1995, 285 ailments were recorded last twelvemonth, 1,659 ailments were recorded and an extra 600 posings were reported. In decision, three buyable solutions covering with the black bear issue would be to engage a little group of sharp-shooters to carry on a black bear Hunt in the province of New Jersey, to aim debatable bears by seting them through antipathy therapy and euthanizing the bears that continue moving sharply, and to fund plans learning society ways to coexist with the bears without killing them. The Division # 8217 ; s Wildlife Control Unit is covering with the ailments on this serious job associated with an spread outing bear population as best it can, but its resources are limited. A long-run solution is in great demand, but until an concrete solution surfaces, interactions between bears and worlds are inevitable and struggles will go on to go more frequent as the figure of bears grow. The community remains about every bit split over the controversial solutions to the job. Although this issue is a specific one, it boils down to whether or non it is humanist to kill another animate being . This antique inquiry is the nucleus of the affair and society must come to an understanding on the reply to this inquiry before any betterments can happen.

Life in Black and White essays

Life in Black and White essays Life in Black and White, is a great book about the Southern society in the antebellum period focussing on the daily life in Loundoun County, Virginia, tracing the lives of all classes and cultures. For years, many historians have argued that most slave families in the American antebellum south were, despite many and certain circumstances upon them, traditional nuclear families. The author, Brenda E. Stevenson, challenged numerous reviews and ideas of the nature of slave families relations and ways of life. She examines the whole Southern society through the families of all races. In this process the book offers an unprecedented look at the daily lives of different communities such as the slaves, planters, free blacks, and yeoman farmers. Most importantly she gives us the opportunity to see the social and cultural forces which bond them together, even while driving them apart. Stevenson provides a perfect portrait of family and community life in the American South bringing in stories and quotes of planters, slaves, free blacks, and poor whites, in the mid-18th century to the Civil War. These stories give strong evidence on the hardships of life for both blacks and whites. For instance, in chapter 6, The Nature of Loudoun Slavery, owners would sell certain slaves for financial reasons, masters most readily sold slaves as punishment or a mean of control. An ex-slave explains what some masters would say to discipline or threaten to sell them down South. He come....down to the quarters. Pick out de famly dat got de most chillun an say, Fo God, nigger, Im goin to sell all dem chillun o yourn lessen you keep quiet. Dat threat was a worsen prospects of alickin. Evybody sho keep quiet arter dat ( Stevenson, 179). Slave life was emphasized of labor and discipline. The workload was merle physical punishment in itself, but all slaves were alwa ...

Field trip report Essay Example | Topics and Well Written Essays - 2500 words

Field trip report - Essay Example The report applies Butler’s destination life-cycle model to the Piney Lake. The site has undergone the first two stages in the life-cycle- exploration and involvement. The tourist destination is heading towards its third stage-that of development. It seems that the Noongar community may take a long time to go through the other stages of tourism life cycle as the inhabitants are so much involved and tied to their indigenous culture and traditions. The current report emphasises the need to formulate comprehensive strategies to keep the Aboriginal culture and traditions of Noongar community intact. Researchers, students and scholars on indigenous tourism need to undertake detailed in-depth studies on the tourist destination to identify the factors that preserve its authenticity and cultural diversity. Governmental policies and interventions on indigenous tourism need to perceive tourism as a cultural phenomenon rather than an economic enterprise. It is imperative for all the stakeholders to identify the dangers of commoditization and commercialization. Above all, measures are to be undertaken to facilitate sustainable models of tourism development on the tourist site. Indigenous tourism in Australia is flourishing day by day as aboriginal owned and operated enterprises have been attracting the attention of tourists. Indigenous tourism paves way for cultural rejuvenation of aboriginals while it also contributes immensely to the economy of the nation. Authenticity lies at the core of indigenous tourism and therefore loss of authenticity due to commoditization and commercialization of indigenous culture deserve primary attention. Contrived cultural products, tourist oriented commercial craftworks, and commercialized tourist services may adversely affect tourists’ quest for authenticity and will negate them of genuine indigenous tourism experiences. Similarly, sustainable models of tourism development are an essential prerequisite for

Dominant Ideology in British News Broadcasting Essay

Dominant Ideology in British News Broadcasting - Essay Example The answer lies between the lines that bring out the news of the war in both Britain and the US. Steven was a victim of terror - no doubts about it. But his being American was just half the story. His murder is only an attempt by a pagan enemy to a nation of soldiers and newsmongers called the US, an attempt by the people to tell the world that these men did not report the brewing of the soup as much as they cry about the murderous soup called the war on terror being served on the platters of international diplomatic circles. It was not what the press said that lead to the murder of Steven, but what the press did not say that led to his killing. Or rather does the silence of the press intend to say more than they said in words. Do the gloomy looking news readers on channels in the UK say more than they could express in words Should that really have been the scenario Did that silence warrant the murder of a promising journalist Where do we go from here They are perceived as independent commentators by the people and in many cases - such as the Iraq war, their independence has turned out to be a spook rather than truth. Independent reporting is a thing of the pastor is at least as fictitious as Jack and his Bean Stalk. What is most obvious from these reports is that it has sidelined human rights largely in countries where western armies are operating. In most cases, the despots are simply terrorists that need to be done with and in certain countries, the despots are the best available choices and friends of these nations. Press in the west has made this mistake time and again. The recent examples are President Suharto of Indonesia and his mass murder venture in East Timor which was largely underplayed by the western media. This process went on for a substantial period of fifteen years.

Facts Regarding The Moon And The Illusion Psychology Essay

Facts Regarding The Moon And The Illusion Psychology Essay 1. Introduction The moon rises in the east and settles in the west, following a trajectory route very similar to that of figure 2a. However, during this trajectory the appearance of the moon observed larger on the horizon compared to when it is in its elevated position in the sky is known as the moon illusion for e.g. ( Kaufman et al 1962, 2000, 2006 Reed Kuprinski 2009, Coren Aks 1990, Weizman Cohen 2003, Toskovich 2009, Nanavati 2009), see figure 1ab. This illusion is not only denoted to the moon, it can also be observed by other celestial constellations such as the sun and the stars (Ross and Plug, pg 1-2 2002) (Wade pg 377 2000). It has been found in some cases that the size of the horizon moon appeared almost 1-2 times the diameter of the elevated moon Kaufman and Rock (1962) Ross and Plug (1994). This experience persists even when one is familiar it is an illusion Weizman and Cohen (2003) and has been observed for many centuries, with Aristotle (384-322BC) making the first clear scientific account Ross and Plug, pg 1-2 (2002) Wade pg 377 (2000). However there have been many suggested theories from physics to physiology and now finally psychology as to why this illusion is experienced Wade pg377 (2000), but none has been accepted as the correct answer. The main conflicting issues involve contradictions as to whether it is a linear or angular illusion, thus a model which accounts for both linear and angular illusions providing a common unified explanation is required. Elevated Moon/ Zenith moon Horizon Moon 1a 1b Figure 1a http://facstaff.uww.edu/mccreadd/ and 1b http://www.lhup.edu/~dsimanek/3d/loony.htm (Ken Amis) what the actual illusion looks like in its two comparative positions and an illustration of what the names horizon and elevated moons infer to within this text. 2. Facts regarding the moon and the illusion This is regarded as an illusion because the increase in perception of size occurs even though the visual angle (V) subtended on the eye remains the same regardless of the trajectory position of the moon, i.e. whether the moon is on the horizon or in its elevated position-see figure 2 (For e.g. C.Reed and E. Kuprinski 2009, Kaufman et al 2000). Physically if the angular size changes then a subsequent change of the retinal image size would occur, but it remains constant and hence is regarded as a perceptual phenomenon. The value of this angle has long been accepted as a fairly constant value of 0.52 degrees regardless of elevation For e.g. (Bears, Conners and Paradiso, pg 288,3rd edition, 2006, R Casati, 2003, Ross and Plug, pg 11-14, 2002, Mccready section 1 website). Furthermore evidence can be found in photographs, where many photographers have experienced the illusion, however after photographs become developed the moon image appears small Nanavati (2009). For e.g. Ross and Plug pg 60 (2002) took multiple photos of the sun during different periods of the day and found the size of the sun to be exactly the same during each interval at the different trajectories, similar to figure 2b. Since the camera can only illustrate the linear dimensions of an object this would further enforce the suggestion the illusion is in fact a perceptual phenomenon. Another demonstration involves a simple test called Herings manoeuvre, whereby a subject holds a coin close to their eye at arms length and observes the trajectory of the moon. The result of this will always be that the moon and the coin are the same size no matter what position of trajectory of the moon The Moon Illusion, a literature thesis by Bart Borghuis, (1999), Gregory (2007). Figure 2a http://antwrp.gsfc.nasa.gov/apod/ap020130.html Credit and copyright to Shay Stephens. He picture shows the moonrise trajectory over Seattle, USA, with a snapshot taken every 2.5mins. 2a 2b Figure 2 Taken from Mccready section 1 illustrating the size of the moon does not change with the trajectory and nor does the visual angle subtended. The illusion maybe experienced in different areas of the world and the facts about the orbit of the moon around the earth can be used to explain as to why any variances in the earth-moon distance cannot play a role in the illusion. The moon travels in an orbit around the earth completing one full cycle every ~29days (1 month). The mean Earth-Moon distance is fairly constant throughout this period, however there is a degree of variance in the Earth-Moon distance caused by the elliptical shape of the orbit of travel (Nasa website). This variance causes the size of the visual angle of the horizon moon to become 2% smaller than the elevated moon and may only affect only short time viewing i.e. vieiwning the moon during separate hours in the same day Nanavati )2009), but not significant enough to cause the illusion (Mccready section 1). The distance of travel of the orbit has been monitored by NASA since the initial experimentation was carried out using retro-reflector beams/laser used in the Apollo 11 mission to the moon Faller et al (1969, 1970). The moon travels in an orbit of fairly constant mean distance of 384,000km (NASA website) from the earth and hence discounting the physical distance factor creating the illusion. The size (S) is It has been well established the physical size, distance and visual angle do not change (or not by a significant factor), however Aristotle suggested there was a physical cause that created a real magnification on the image size Nanavati (2009). It was thought this was caused by the atmospheric refraction, which had its effects greatest on the light rays on the horizon causing an increase in the moon size The Moon Illusion, a literature thesis by Bart Borghuis (1999), Ross and Plug pg57 (2002) i.e. like a stone under water where it appears to enlarge in size. However this theory was later disregarded as there was no means of measuring the actual horizon enlargement and if any it was deemed neglible, however many writers and investigators supported the idea that it could possibly play some form of secondary role Ross and Plug pg57 (2002), Gregory (2007). 3. Linear distance illusions 3.1 Size distance invariance hypothesis and Emmerts law The SDIH theory proposes the cause of the horizon moon appearing bigger is due to the extended terrain viewed in between the observer and the horizon moon, thus placing it at a perceptually further distance, for e.g. Kaufman (2000, 2006, 2007), Suzuki (2007), Gregory (2007). The SDIH assumes perceived angle (V) like the objective angle (V) is unchanged Reed and Kuprinski (2009) and implies distance is computed primarily by the visual system, while size is later inferred from this. Due to these conditions where perceived angle (V) is kept constant, only perceived distance (D) and size (S) can only change, thus suggesting a linear distance/size illusion and not an angular illusion Higashiyama (2004) Lou (2007). The SDIH can be illustrated by the formula S/D=tan V (apparent size S, apparent distance D and the physical visual angle V) Higashiyama (2006) Kaufman (2006), see figure 3. The SDIH implies the perceived size (S) is directly proportional to perceived distance (D) and this relati onship can be explained using Emmerts law. The conditions of Emmerts law are the perceived size of an object subtending a constant visual angle is directly proportional to its apparent distance Gregory (2007) Philip Servos (2006). Emmerts law in effect is the description of the size distance invariance hypothesis (SDIH) Jones et al (2009) and is one of the more researched theories within this topic. Afterimages are often used as a means to display Emmerts law since they have a constant visual angle always subtended at any distance and therefore a fixed retinal image size at all times disregarding any changes in angular size Lou (2007). Due to this retinal image size being a constant size, means any increase in the afterimage size cannot be due to any angular illusions. Since Emmerts law states size is proportional to apparent distance, then afterimages can be classed as one means of evidence for the SDIH. Figure 3 SDIH diagram taken from section 2 of http://facstaff.uww.edu/mccreadd/sectionII.html Most investigations usually conform to similar methodologies involving a form of magnitude estimation i.e. size or distance, using a reference moon to a variable moon, for e.g. (Holway and Boring 1941, Kaufman 2000, Gordon M Redding 2002, Jones Wilson 2009, Liang Lou 2007 etc). Kaufman (2000) used artificial moons to display the SDIH as a description of the moon illusion. Subjects viewed these artificial moons of constant angular size against a natural sky in horizon and zenith positions. They compared the size and distance of a reference moon to a variable moon. And altered the size of the variable moon using a keypad to achieve a match, see figure 5. In the results the horizon moon was perceived 3.2 times bigger and 4.2 times further away than the zenith. They found as they increased the distance between the reference and variable moon, the moon perceived size increased. Conversely when the distance was reduced the perceived size decreased therefore implying distance determines perceived size. Due to the availability of visual cues, the horizon moon is perceived at a distance D further than that of the zenith, causing a subsequent increase in size S Higashiyama (2006), (2007). Figure 4 illustrates the principles behind the SDIH and apparent distance theor y, where by the black circles in the inner band exemplify the moon straight above the observers head perceived as closer and hence smaller. The horizon moon in this model is perceived further away and hence bigger. Condition 2-Inside band (black circles) showing proposed SDIH condition Condition 1-Outside band (white circles) showing normal condition Horizon moon Observer Elevated moon Figure 4 (Annotated Figure 1 from Kaufman 2000) demonstrating the two conditions. Condition 1 the outer band of circles demonstrate how the moon should be perceived right from the horizon to its elevated state with no illusion. However condition 2 using this model of the illusion is represented in the second inner band of circles, suggesting the moon straight above the observers head is perceived as closer hence smaller and horizon bigger and further. Figure 5 demonstrates the apparatus used in Kaufman 2000s experiment. An IBM Think-Pad flat panel display specifically designed for this experiment was used. Virtual moons were produced as luminous disks against the natural sky. It was conducted on a hilltop on the C.W. Post campus of Long Island University in Brookville, NY. A total of four moons can be seen: one reference and one variable for both the horizon and elevated moon and subjects adjusted the variable moon using the computer accordingly. Kaufman (2006) further investigated using noise signal detection and two alternative forced choices. Luminous discs of constant visual angles were used however viewed across a virtual terrain in this case containing distance cues. Two separate experiments were conducted on size and distance, which suggested a directly proportional relationship between the two as predicted by the SDIH. Figure 6 compares the log size (y axis) versus the log depth (x axis), inferred as distance and found the slope demonstrates a linear slope of ~1. Thus these results suggest as size increases so does distance, once again supporting the SDIH. The fact the perceived size increases as a directly proportional factor to the distance perceived, indicates that the moon illusion cannot be referred to as an angular account. Figure 6 Kaufman 2006 shows the log perceived depth otherwise regarded as distance (x-axis) and log size (y-axis). A straight line is formed with a gradient of approximately 1, therefore suggesting size is proportional to distance as distance is to size. Tozawa (2006) investigated the roles of motion parallax and perspective cues on size and distance perception and the results yielded were similar and supported the SDIH. Weizman and Cohen (2003) also investigated the SDIH via a matching task using 4 different groups of subjects varying in age. Results indicated 41-88% viewed the horizon moon to be of a greater size and as a consequence supporting the SDIH. 3.2 The paradox The issue with the SDIH is it induces a paradox since many people do not experience the conditions it sets ;( the horizon moon appears both larger and further away) for e.g. (Higayshima 2006, Kaufman 2007, Kotaro Suzuki 2007, Kaufman 2006, Gregory 2007, Jones et al 2009). Instead (Mccready section 3) found up to 90% and Kaufman (2000) 9/10, view the larger horizon moon to be perceived as closer. Size constancy is the visual systems ability to maintain the accurate perception of real size of an object regardless of the change in retinal images size Combe Wexler (2009) Gregory (2007) i.e. when a person is walking away their physical dimensions do not appear to shrink, this relationship is maintained by size constancy regardless of the change in distance, which should create a smaller image size on the retina. One idea proposed as an answer is observers use the perceived distance to scale perceived size, as in SDIH. When enquired about distance, this scaled size and previous experience of sizes of objects from size constancy are used to determine distance. Hence due to this experience the observer makes a logical choice, thus in effect proposing there is a bias towards experiencing bigger objects to appear closer Kaufman (2000) (2007). However what is suggested in effect is there are two different routes taken to decipher size from distance and distance from size and without a ny direct evidence these ideas cannot be accepted as yet. 3.3 The apparent distance theory The apparent distance theory states the perceived distance is not only determined by the retinal image size, but factors such as visual cues within the surrounding terrain play a controlling role in judgment, for e.g. (Gregory 2008), Suzuki (2007), Kaufman (2000). There are many different types of visual cues from which the visual system can infer distance from and the amount of effect each cue has also varies. The terrain in one direction and its absence in the other play a vital role in the illusion Kaufman and Rock (1962). The role of cues plays an integral part in the SDIH, since the perceived distance determines the judged size and in effect can be described as SDIH since the findings directly support it. Pictorial representations of the illusion have been used as a methodology for investigation of depth cues, for e.g. (Coren and Aks 1990, Redding 2002, Jones et al 2009).The benefit of this being that any structural factors such as accommodation that may contribute towards the processing of size and distance are eliminated as cues and only visual cues i.e. terrain are left to investigate Redding (2002) Coren Aks (1990). The apparent distance theory would predict the horizon moon appears bigger due to distance cues placing it at a further distance and the zenith moon as closer, hence smaller, just as in SDIH. Jones and Wilson (2009) findings supported the apparent distance theory and demonstrate the level of effect of cues on the perceived distance. They used pictorial representations of of different salience as cues to depth, figure 7 displays the pictures used in increasing salience of each picture from A-D. Subjects viewed a reference moon placed on the horizon and zenith on the different scenes (figure 7 A-D) and compared this to a set of variable moon sizes on a computer, judging the match in size. A positive score (above 0) in the results from figure 8 indicated a perceived increase in size. Results show as the salience increases so does the perception of size for both moon trajectories, therefore these findings emphasize regardless of salience of cues, the mere presence of some form of cues effectively increase perceived size. However in all scenes the horizon moon is perceived bigger and significantly more so in the two scenes of high salience (figure 7 C and D). This infers proxi mity is a key factor and thus illustrates why the horizon moon is judged bigger, since it is in closer proximity to the terrain and the greater salience exaggerates this effect. Figure 7 taken from Stephanie 2009 figure 1 illustrating the different pictorial representations used as devices for the different depths of cues. A) Drawing of lowest depth cue salience B) Drawing of intermediate depth cue salience C)Drawing of high depth cue salience- Town scene D) Drawing of high depth cue salience- City scene. Figure 8 From Stephanie et al 2009 experiment number 1. The results were based on the size of error scores between the subjective responses of perceived size of the variable moon compared to the control moon size. Significant differences in size between the horizon moon and elevated moon indicated the degree of strength each cue played on that particular moon. The positive error score indicated an increase in perceived size and negative score a decrease. Redding (2002) also supported that cues in the terrain are essential for size scaling to create the impression of a bigger horizon moon, as well as the proximity to the terrain. A pictorial representation of an upright and inverted gradient, with two moons positioned like figure. The upright gradient produces fine details very close together giving the impression of a receding distance like in the horizon. However the upright gradient was more spaced out mimicking the large expanses of space surrounding the zenith moon. The apparent distance theory would predict a reverse in the illusion if the visual scene was inverted i.e. the horizon moon would now look smaller than the zenith. The results show the mean illusion, where a positive score indicates the normal moon illusion occurred and negative the reverse. These results demonstrate the prediction was correct since the horizon moon size increased in the upright direction and reversed in the inverted. Within virtual environments it has been found the size constancy mechanism is very strong when the object being viewed is surrounded by an environment, where comparisons can be made to decipher distance from, for e.g. (Kenyon et al 2007, Tanaka Fujita 2007, murgia and sharkey 2009). It has been suggested the elevated moon is perceived smaller due to the lack of surrounding visual cues for e.g. (Higashiyama 2006, Kaufman 2000, Jones et al2009). The proposed idea is the zenith moon due to no visual cues is placed at default distance related to the resting focus of approximately 1-2m regarded as empty space myopia, thus leading to its small perceived size (Da Silva 1989, Gogel Mertz, 1989, Redding 2002, Gregory 2007, Suzuki 2007). 3.4 Sky dome illusions The apparent shape of the sky was previously replicated in a drawing by King and Gruber (1962), where they made subjects project afterimages onto the sky in different directions (horizon 45. Zenith). Results had shown 81% of subjects viewed the moon bigger in the horizon sky than at 45. and 87% viewed horizon bigger than the zenith. Weizman and Cohen (2003) found the sky is perceived as an oblate profile i.e. like an inverted bowl with a flat top (see figure) and cues within this frame are used to judge the distance. It has been proposed this flattened dome top causes the zenith moon to appear closer and thus smaller. This theory implies a mental map of the shape of the sky as an oblate- bowl shape, with the flat portion directly above the observers head. This flatter area causes the perception of a shorter distance to the sky just above the observers head and thus causes the zenith moon to be perceived as smaller. This is very similar to the SDIH approach which states the same fundamental reasons, but the SDIH suggests its the absence of visual cues that place the zenith moon at a closer distance and hence smaller, not a mental map model of the sky. However Toskovich (2009) examined to test if the flattened sky caused the moon size to reduce and suggested otherwise. Subjects viewed the moon in the horizon, 45Â ° and zenith positions using head movements and were positioned at 1m, 3m and 5m from the moon. They were instructed to determine distance and size estimates from these positions. Results had shown from 1m subjects perceived distance is the same in all directions thus indicating at close distances the visual system is able to interpret very accurately. However from 3m and 5m found the distances perceived to the zenith as larger than towards the horizon and no differences in size estimations at any direction. This is opposite to the flattened sky dome approach and proposes the sky is rather perceived as elongated towards the zenith and not flat. These findings suggest the illusion is affected by head position and location. 4. Visual angle illusions To begin with Descartes, 1664 Wade 2000 pg (354-355) suggested associations with familiar objects, accommodation and convergence are all cues to distance. The apparent-distance theory is built upon the assumption the actual perceived visual angle is interpreted as the same as the physical linear visual angle Reed and Kuprinski (2009). However, alternative theories suggest the perceived visual angle may be affected by oculomotor processes unconsciously Mccready (2006) Keef and Kuprinski (2009) and size/distance then subsequently inferred from this. 4.1 The retinal representation of the moon illusion If the illusion causes the perceived visual angle to change by becoming enlarged, then subsequently the perceived retinal image size should also increase. Murray et al (2006) found illusions such as the moon illusion affect retinal representation of the image size in the primary visual cortex (V1). Using functional magnetic resonance imaging (fMRI) and a 3d scene of a hallway with walls, an image had been produced containing information to apparent depth, see figure 9a for an illustration. Two 6.5 degree sized spheres were arranged like in figure 9a and the results showed the back sphere appeared to be 17% larger in angular size than the front sphere (even when of the same physical angular size). The results in figure 9a also illustrate the peak MRI signal responses were found higher at higher eccentricities for the perceptually larger back sphere than the front and the back sphere occupied a larger area in the V1 cortex. Thus implying the perceived bigger size of the back sphere cre ated a bigger images size on the retina. Furthermore these results were compared to the responses generated by two physically different sized spheres without any illusion (6.5Â ° versus 8.125Â ° and 4.875Â ° versus 6.875Â ° sized spheres, as shown in figure 9bc). The findings demonstrate the responses generated from two physically different sized spheres yielded a response very similar to 9a. Therefore indicating the illusion created an actual change in the retinal image size and a greater eccentricity was occupied by the back sphere as a result. Thus the depth illusion causes a change in the perceived angular size on the retina and hence providing evidence towards scaling processes affecting the representation on the retina (Murray et al 2006). Since only a change in the physical visual angle or perceived visual angle may cause this change in retinal image size. Figure 9 taken from Murray et al 2006 displaying the hallway and the walls creating the illusion. the trial response graph shows the perceptual difference in angular size between the two objects. The top graph illustrates the fMRI activity for the perceived larger back object extending in eccentricity beyond that of the perceived smaller front object. The bottom row shows a similar response is triggered when two objects of physically different angular sizes are shown (with no hallway illusion placed). Therefore indicating the cause in the back object to be perceived more distant is due to an increase in angular size. 4.2 Accommodative micropsia The visual terrain contribution to the moon illusion may be mediated by the state of the oculomotor system and not via the size-distance invariance mechanism, or size constancy scaling Suzuki (2007). The perceived distance may affect the accommodation response or the converse of this may also be true i.e. the level of accommodation may affect the perceived distance of a stimulus (Edgar 2007, Suzuki 2007, Lou 2007). The micropsia phenomenon causes objects to appear smaller than usual and macropsia bigger, whereby they can be induced by changes in accommodation/ Vergence leading to underestimation/ overestimation of its apparent size Howard Rogers (2002). When viewing the zenith moon there is no depth cues and the moon is isolated in an empty space. This causes the eyes to converge onto the single object of the zenith moon, thus increasing in convergence as it does. This increase in convergence induces increase in accommodation causing the decrease in angular size and is known as micropsia, for e.g. Howard Rogers (2002) Mccready (2004) section 4, Lou (2007), Suzuki (2007). However when viewing the horizon moon in its natural settings, objects acting as depth cues in the terrain may cause the AC/V system to adjust from near to far distance thus increased divergence invoking an increase in angular size known as macropsia (Lou 2007, Mccready 2004 section 4, Tanaka Fujita 2007, Suzuki 2007). Lou (2007) used afterimages of dark circles viewed against a mobile white background on which this reference circle was projected on, see figure 10. These afterimages were projected from the various distances and subjects adjusted the variable stimulus on a computer screen when perceived a match with the reference. Results indicated subjects perceived afterimages to decrease in size at focal distances less than 1m i.e. distances at a closer range. Figure 11 displays the 30cm, 90cm and 200cm distances from where the afterimage was projected and regardless of these distances the same response of decrease in matched size. The focal distances affected the matched size and not the distance the afterimages were projected from, Lou (2007) suggested these findings are representation of accommodation micropsia. Although oculomotor cues are used as cues to distance just as visual pictorial cues are used also, they are less effective up to distances >2m Kaufman (2000). Oculomotor cues and pictorial cues play a role in judging distance, however at longer distances pictorial cues play a greater role as determinants of distance Kaufman (2000), Coren and Aks (1990). become slightly near-sighted in relative darkness (night myopia) proof is just to show accomodtaion/convergence effort changes when viewing horizon and elevated moons Figure 10 Figure 11 taken from figure 2b (Lou 2007). This figure demonstrates the 30cm, 90cm and 200cm distances from which the afterimages were viewed from and the perceived angular match to the control afterimage of size 4.25degrees. The straight angular line indicates the actual size of the afterimage (4.25 degrees). The perceived match of the angular size (y-axis) versus calculated focal distance (x-axis). All about enright and roscoedifferent eye adjustement for horizon/zenith moon measured In conclusion against oculomotor micropsia/macropsia, oculomotor cues are less effective in regards to objects being viewed at longer distances. Here the visual/ perceptual system becomes more dependent on other cues such as pictorial factors Arditi (1986) from Kaufman (2000). Kaufman et als claim is that because the moon is far away, pictorial cues dominate oculomotor cues for distance perception. Kaufman (2006) in the end argues that distance is interpreted first and then angular size. Arguing against the micropsia theory. Also , absence of these surrounding environments the size constancy changes to visual angle performance Kenyon (2007) As you look up to the sky convergence increases therefore increased accommodation occurs causing perception of closer moon distance, therefore according to SDIH a smaller perceived size. REFER TO KAUFMAN 2000 But, these micropsia and macropsia illusions cause angular size differences of less than 10%, nowhere near large enough to account for the moon illusion seen by most persons. Also, if accommodation were involved in the moon illusion, youd think that elderly people who have lost nearly all accommodation should not perceive the illusion. Yet they do. Persons with eye lens implants have no accommodation, and they do perceive the moon illusion. Covering one eye removes convergence from consideration, but that doesnt make the moon illusion go away. Pinhole astronomy 4.3 Angle of regard When looking at the horizon moon the head is positioned at eye level, where as when viewing the elevated moon the head position is further elevated by almost 45degs. It has been suggested the tilt or elevation of the head or eyes may affect the judgment of distance and thus implying the moon illusion as anisotropy (directionally dependent) for e.g. Holway and Boring (1940), Higashiyama Adachi (2006), Suzuki (2007), Toskovich (2009). Suzuki (2007) investigated the ratio of size of afterimages projected onto the horizon and zenith sky. Subjects were instructed to project the afterimages onto the horizon sky at eyelevel and then project the image again however after elevating the eye position by 60 degrees (using neck movements) onto the same area of the sky. This was also repeated for the zenith sky and the results yielded indicate the illusion is 1.09 times greater when the eyes are in an elevated position compared to eye level. These findings indicate the level of elevation of the eyes has an effect on the illusion magnitude and is consistent with previous findings. Proprioceptve descriptions suggest non visual components may contribute to judging distance using head direction, body posture, vestibular and kinetic information Toskovich (2009). Furthermore Toskovich suggested head tilt upwards could cause the perceived space to elongate. Figure 11 taken from (Roscoe and Acosta 2008)~figure 4. The number 0 would indicate a perfect size match and a positive value indicates an increase in size and negative vice versa. The x-axis displays the accommodative effort exerted by the visual system and the y-axis the interpretation of the moon size. Anisotropy End with (Perceived size and perceived distance of targets viewed from between the legs: Evidence for proprioceptive theory 2006) and how this supports direct perception model rather than the apparent distance model. (Therefore supports everything except this model) In another experiment 2 Toskovich (2009) measured size at the 3 distances and found size did not change in the three viewing directions and thus suggested the moon illusion may not be caused by a linear account, instead a more contributed input of vestibular information. (Higashiyama Adachi 2006) supported this theory and found the illusion disappeared when viewing through the legs. Thus suggesting the moon illusion is caused by the elevation of head tilt. An astronaut who views the moon above the horizon from low-earth orbit lacks terrain cues to distance. We now know that in this situation the illusion vanishes (Lu et al., 2006) from (Kayfman et al 2007). The terrestrial passage theory offers an alternative idea regarding the visual angle theories mentioned. It states the subjects learn to form an expected change in visual angle when viewing objects at different projections from past familiar experiences (Reed and Kuprinski, 2009). In a sample of 48 subjects this hypothesis was tested and the c

Ironing out carbon - One mans solution to carbon sequestration Essay

â€Å"Ironing† out Carbon Dioxide   Ã‚  Ã‚  Ã‚  Ã‚  Carbon Dioxide plays a key role in the atmosphere. This gas has properties that allow it to sustain and hold in heat, which in turn warms the planet (EIA, 2004). Carbon, the primary component of carbon dioxide; is also the essential molecule for life and is the most basic building block found in all organic compounds. Human activities been blamed for the disruption of the earth’s natural carbon cycles and according to some studies, carbon is being added to the atmosphere faster than the natural processes that sequestrate it. The massive carbon sinks that naturally regulated and fixated excess carbon dioxide have been destroyed as humans have deforested ancient forests for the sake of building their cities and supplying lands for agriculture. Research shows that there has been a consistent balance of carbon dioxide in the atmosphere for the past 10,000 years (Hamburg, Harris et al 1999); this balance has shifted rapidly in the last 150 years. The Problem   Ã‚  Ã‚  Ã‚  Ã‚  Carbon dioxide, produced through combustion and oxidation has become a growing concern in today’s society. In industrialized countries greenhouse gases and the effects on our environment are becoming an issue that no longer can be ignored. Changes such as increasing temperatures, the melting of the Arctic ice cap, rising sea levels, and more violent weather activities (hurricanes, droughts, and hotter/longer summers) are becoming more and more evident with each decade. The rapid increase of carbon dioxide appears to be a key component of the in the development of these occurrences, however global warming has sparked much debate because the data that has been collected over the past century has conflicting trends (planktos.com, 2004). It is difficult to predict the behavior of the earth’s climate because it is ever changing and erratic, much to the chagrin of scientific modelers; the earth’s climate refuses to adhere to computer models.   Ã‚  Ã‚  Ã‚  Ã‚  Historically temperatures have fluctuated on the surface of the planet; however, with new technology and satellite data collection, conflicts in data have caused scientists to rethink their conclusions on the causes of these temperature fluctuations. What can be proven is that humans are affecting the planet in adverse ways. Mass deforestation, burning of f... ... Sources cited: â€Å"American Society of Limnology and Oceanography†. The Scientific and Policy Uncertainties Surrounding the Use of Ocean Fertilization to Transfer Atmospheric Carbon Dioxide to the Oceans. American Society of Limnology and Oceanography. http://www.aslo.org/meetings/carbon2001/chisholm/transcript2.html Caroline Dopyera, â€Å"The Iron Hypothesis† Earth, October 1996 Hamburg, Steven, Harris, Neil, et al. 1999: â€Å"How do we know that the Atmospheric Build-up of Greenhouse Gases is Due to Human Activity?† 20 October 2001 http://www.gcrio.org/ipcc/qa/05.htm Lawrence, Mark G. â€Å"Side effects of Oceanic Iron Fertilization† Science 20 September 2002 National Energy Information Center (NEIC),Energy Information Administration, â€Å"Greenhouse gases, climate change and energy† Publication EI-30 http://www.eia.doe.gov/oiaf/1605/ggccebro/chapter1.html PALMER, ALASDAIR. â€Å"FOCUS PLANKTON TO THE RESCUE: the man who says he can save the planet† The Sunday Telegraph [Sydney] 23 August 2003 United States, Department of Energy. Capturing and Sequestering Carbon Dioxide DOE Document PI -0001. November 2003 http://climatetechnology.gov/library/2003/currentactivities/sequester.htm

Q marginalisation

Through these poems and novel it shall e proven that Normalization is not always limited to an individual, instead it can extend to a social group and even a country itself. In this essay the three types of normalization will be addressed, individual normalization through racism, social normalization through groups such as the ‘hippies' and the normalization of a country itself through economic normalization of 3rd world countries.Normalization can occur anywhere at any time to anyone. Individual normalization is where one person Is singled out from a group or community of people for something like being an overweight. One of the most talked about and, unfortunately common, types of individual normalization is racism. Racism is something that society has struggled with for many generations. It has been around from the early settlers and has been a problem ever since.The poem telephone conversation' by Whole Saying demonstrates the racism and its problems very clearly. It is a p oem about an African man looking for accommodation In either England or America around the time of the sass's. The line â€Å"madam† I warned, â€Å"l hate a wasted journey – I am African†Ã¢â‚¬ ¦ â€Å"HOW an example of how African people were marginal's again because of the color of their skin. In those times, It was hard