Can Calcium Help with Weight Loss and Maintenance?

Can Calcium cooperate with Weight Loss and Maintenance?As we all know, atomic number 20 plays an important role in the testimonial and production of the bodys teeth and bones. An important question, we as nutritionists are wondering is, can atomic number 20 help with exercising weight maintenance, weight passage, and obesity? We looked at several studies based on this question.The first study looked at the cause of weight, loss of a high- atomic number 20 energy, lopd regimen on the biomarkers of inflammatory stress, fibrinolysis, and endothelial function in grievous subjects. There were 35 subjects who lost at least 3% of initial body weight composite in this study. The study lasted a total of 16 weeks. The subjects were split up into two bases. One group was the high-calcium diet (HCD) group and the other was the low-calcium diet (LCD) group (Torres, M. R. S. G., and Sanjuliani, A. F., 2013). The HCD group was measured in a calcium intake of 1,200 1,300 mg/day, whereas the LCD group was measured in a calcium intake of little than 500 mg/day. Both on the diets followed the same intake for protein (22%), plump outten out (28%), carbohydrates (50%), and 19 grams of fiber. The only end in the diets was the HCD group received 60 grams/day of a non-fat powdered milk. The results indicated that those on the HCD had a greater reduction in the waist to hip ratio and waist circumference. Both groups had similar reductions in the biomarkers. Therefore, an HCD helped to reduce waist circumference, but had no benefit in the biomarkers of inflammation, fibrinolysis, and endothelial function. According to this study, there seems to be a need for further enquiry on the effectiveness of increased calcium in the diet and its coefficient of correlation to weight loss and weight management (Torres, M. R. S. G., and Sanjuliani, A. F., 2013).Calcium plays a major role in accelerating fat and weight loss, especially in overweight and obese adults with calcium defi ciency (Zhu et al., 2013). The authors of this second study looked at calcium and vitamin D supplements among overweight and obese college students to prevent fat storage and improve metabolic functions. In their randomized control study, 53 adults participated in the study and they were assigned 600 milligrams of calcium with 125 IU of vitamin D. The study was 12 weeks long to determine the effectiveness of supplementation in weight management, and involved a control group. The results showed that the calcium and vitamin D group had a decreased body fat and visceral fat level, but no changes in weight when compared to the control group. These findings suggest that the weight loss program can motivate adults to drop off body fat along with further restrictions. It seems that further research is needed to address the dosage of calcium and vitamin D supplements in promoting weight management among adults (Zhu et al., 2013).A magisterial review conducted by Onakpoya, Perry, Zhang and Ernst (2011) looked at calcium supplementation as it relates to weight loss. Calcium carbonate and calcium citrate are commonly apply dietary supplements and may influence weight loss. The investigators electronically searched for randomized, double-blind, placebo control studies in their review. A total of 729 participants could be included in this review. A forest plot of the seven main randomized control trials apply in this review demonstrated that a small, significantly greater reduction in body fat was associated with calcium as it was compared with a placebo (Onakpoya, Perry, Zhang, Ernst, 2011). The researchers determined that the effect of calcium supplementation is small and not clinically relevant because less than 5% of total body weight at baseline was lost with calcium supplementation (Onakpoya Perry, Zhang, Ernst, 2011). This review shows that calcium supplementation for at least six months can have a small effect on weight loss, however, the researchers warn that the information obtained from the studies may not be in all accurate. The good news is, no adverse effects from calcium supplementation were reported in any of the randomized control trials (Onakpoya, Perry, Zhang, Ernst, 2011). It appears supplementing with calcium at recommended dietary intakes may help in weight loss but it is not a miracle drug.According to the three articles mentioned above, calcium does not seem to be a significant factor in weight loss and management. In the studies, there was often less than a 5% reduction in body weight, leading to the insignificance of a higher calcium diet. Further research needs to be conducted in order to better understand if a higher calcium diet is important in weight management.ReferencesOnakpoya, I.J., Perry, R., Zhang, J., Ernst, E. (2011). Efficacy of calcium supplementation for management of overweight and obesity systematic review of randomized clinical trials. Nutrition Reviews. 69, 335-343. Retrieved from https//www.ncbi.nlm .nih.gov/pubmed/21631515Torres, M. R. S. G., and Sanjuliani, A. F., 2013. Effects of weight loss from a high-calcium energy trim diet on biomarkers of inflammatory stress, fibrinolysis, and endothelial function in obese subjects. Nutrition Journal. 29. 143-151. Retrieved from https//www.ncbi.nlm.nih.gov/pubmed/23010419Zhu, W., Cai, D., Wang, Y., Lin, N., Hu, Q., Qi, Y., Amarasekara, S. (2013). Calcium electropositive vitamin D3 supplementation facilitated Fat loss in overweight and obese college students with very- low calcium consumption a randomized controlled trial. Nutrition Journal, 12, 8. Retrieved from https//www.ncbi.nlm.nih.gov/pmc/articles/PMC3599592/

Effects Of Digital Technology On Identity

Effects Of Digital Technology On identity operatorIdentity is described as a consciousness of self, as creation a consistent and unique soul. (Fernald, 1997) Defining individual identity involves being conscious(predicate) of and understanding an individuals experiences, perceptions, feelings, sensations, images and memories. Ones understanding and explanation of them, the choices and decisions a person makes, and the action they declare in responding to changing conditions, needs, demands and challenges is another important aspect of identity. Beyond their moral and physical constitution, human beings consist of personal experiences, perceptions, feelings, images and memories (Dorscht, 1998). As digital engineering science is a vast area to cover, I will primarily management on the internet and peoples ability to connect with others.Paul Magnarella, of the University of Florida proposes that, as societies lead more complex and differentiated, due to technological develop ments, more specialists are needed, and affectionate integration is suitable based on the interdependence of specialized functions (Magnarella, 1997). modern-day humanity is adjusting to life within the global community. This has far reaching bushel in how personal, affectionate and cultural identities are formed and maintained. As the engineering science of the twenty-first century speeds up and expands access to information and virtual(prenominal) environments, constraints upon individuals to exclusively rely upon, and respond to their local physical environment is diminished (Jones, 1997).The availableness of information and technology has bear on the development of individual and group identity. It is further very recently in the time line of human evolution, that individuals and members of golf club have been exposed to civilizations, attitudes and agencys of thinking that are not insulated. in that location has been a great deal of attention paid to the developmen t of self in this technological society. The volume and variety of relationships now available to the bonnie person, through the Internet, at an interpersonal level, enables the individual an opportunity to construct a rude(a) self or identity for every occasion, with very circumstantial is expected in return (Eyck, 1998).Sociology is the study of human behaviour in groups, and focuses on the influences of fond relationships on attitudes and behaviour. In the Sociological Research Online Journal, Schroeder examines the social aspects of multi-user virtual reality. He states that there is stratification in cyber-space communities, with insiders and outsiders with different behaviours, roles, and statuses. Schroeder regards the possibilities for extending new opportunities and experiences in twain the natural and social worlds as sociologically pertinent (Schroeder, 1997). The way in which individuals perceive themselves and their place in the world, is fundamental to the motio n of identity. Researchers have described control as an individuals belief that they could cause not bad(predicate) or bad events. (Shapiro et al.) The schema theory is described as facts or experiences that are clustered around topics, which provide a frame of generator for individuals to draw upon when making judgments (Wresch, 1996). When an individual combines this schema with the way they selectively evaluate the limited information allowed into their consciousness, it further defines ones sense of identity. One point proposed is, that by role-playing or testing scenarios in cyber-space, some people are bring out prepared to function in similar real life situations. some other issue is that of gender switching on the web. Anthropologists describe gender as the cultural elaboration and meaning assigned to the biological differentiation between the sexes (Haviland, 1997), in the sense that ones sex is biologically determined, but ones sexual identity is culturally assigned. I n sociological terms, gender roles are expectations, regarding the proper manner and activities, and attitudes of males and females. (Schaefer Lamm, 1997 37) In cyber-space you can assume five-fold identities, change gender and seek different facets of your personality. Turkle quotes Jung, saying Jung believed that for each of us, it is potentially most liberating to become inform with our dark side, as well as the other-gendered self, called anima in men and animus in women (Turkle, 1995). In role-playing and gaming, such as the online fantasy game, Second liveliness. It may be seen as an exercise in fantasy, and a way to shit and gain mastery over a persona the individual is in control of. Second Life is a free 3D virtual world where users can socialize, connect and create using free join and text chat.One definition of society is a fairly large number of people who live in the same territory, are comparatively independent of people outside it, and participate in a com monplace culture (Schaefer Lamm, 1997). In cyber-space, people are forming virtual societies. A sense of familiarity and belonging is created, through interaction and virtual proximity. Participants in Second Life refer to their virtual communities as cultures. Culture by definition is, A set of rules or standards, shared by members of a society, which when acted on by the members produce behaviour that falls within a range of fun the members consider proper and acceptable (Haviland, 1997). To deviate from the rules can result in punishment or expulsion from the culture. There are both IC, in character, guidelines for behavior, and OC or out of character codes to be followed. These people feel that they deal each other. They interact both in and out of character and, in some cases have arranged meetings in the Real World.Sherry Turkle (Turkle, 1995) puts forward the intellection that computer mediated communications have saturated society with both alien and local cultures. Turk le points out that through such widespread social contact, we are adjusting to and assimilating other cultures beliefs and norms to such an extent that we as a society are being deprived of traditional social structures and norms.In this information age, one may locate diverse friends, create an jump off identity and explore avenues of study and areas of culture that were never an option a generation ago (Turkle, 1995). Culture jail is defined as a period of maladjustment during which the non-material culture adapts to the material culture and foreign ideas are a good deal viewed as threatening. (Schaefer Lamm, 1997) This definition could be paraphrased by stating that some individuals suffer from a period of confusion while the previously non-technical culture is adapting to new technology. This techno-culture lag appears to be more problematic to those who have not had as much experience with the technical and Internet related fields, than for example, the average secondary s chooling student. The modern teenager sees the Internet in much the same way the children of the 1960s took television for granted.From a sociological view our individual culture provides us with a predisposed way of thinking and behaving when communicating. Our mental lexicon is affected by our culture, in that we tend to have more wrangling or ways of expressing ourselves, relative to the degree of importance we attach to a prone subject. (Haviland, 1997) The way in which we communicate also guides our thinking and behaviour. This can be a potential source of problems when communicating outside our own culture. Phrases and words that are intended to convey a particular meaning may be misinterpreted and cause embarrassment or offense to a person of a different culture. The absence of body language and gestures when communicating by computer, whether through email or chats, seems to be guiding communication to a more generic form and adding a whole new vocabulary of technological terminology.Modern humanity is part of a networked society, whether directly or indirectly. Its views of the world, its cultures and individual identity are all being reshaped through the cushion of the Internet in our lives. People have become cyber-chameleons, adjusting to whoever they are communicating with. This flexibility is characteristic of contemporary society. One generation ago, it was common for a person to be born, live, and die in one community, while being married to the same person and working in the same job. In todays society it is not unusual to change jobs, and move, remarry and adapt multiple times.Societies suffer a cultural loss when they homogenize and streamline their identities in order to communicate and interact globally (Featherstone Burrows, 1995). The modern self is bombarded with instant(prenominal) images of far off peoples, events and cultures and distant happenings. This places the producers of this information in the position of becoming manufa cturers of reality (Eyck, 1998). It is more important than ever that the individual become certain of how to distinguish fantasy from reality and evaluate the information that is being served up to them (Balsalmo, 1996). The distribution of knowledge and power has made it more difficult for muscular social institutions to wield the power they once did. Knowledge is power, so peradventure to spread knowledge is to distribute power. Ones awareness of choices and decisions, of action and responses, and understanding of what they indicate, and how they interact and relate is what finally comprises an image of oneself, an identity.

Highland Tower Collapse and Ramp Construction

alpestrine Tower Collapse and Ramp ConstructionIntroductionThe purpose of this test is to find out from a field, a twist that experient twist catastrophe, study its short comings and come up with solutions and recommendations of what could be done to hear the same problem doesnt happen in the future. The create upon which the question is based in this assignment is c everyed the proud estate of the realm mainstay, a building in Selangor Malaysia which get togetherd and 48 people died and 12 otherwisewises were evacuated from the other building. The High terra firma Towers violate was an apartment building collapse that occurred on 11 December 1993 in Taman Hillview, Ulu Klang, Selangor, Malaysia. The collapse of Block one of the apartments caused the deaths of 48 people and led to the complete excrement of the remaining two blocks due to safety cin one casern. It was one of the most tragic building accidents in Malaysian history where residential rules collapsed an d killed people. Since then, the government and its subsidiaries sit toss off down in a committee to test a route forward for the mental synthesis industry especially wrench in rough areas to minimize casualties.The withalt has been widely publicized, when an Ameri cigarette tourist in business office because it is captured in the next ten days and consequencen to the Tower of photos a dramatic sequence, and crazy rescue operations. Building professionals with the case of several most-valuable influence in Malaysia, which pass on be the focus of this paper, but to a fault lead to tort fair play in Malaysia interesting development and clarification. role studyHighland Towers consists of troika 12-storey buildings in a steep hill, was ulterior extensively on the terraces in the early 1980s in westerly base build in stages amid 1974 to 1982. Each block is namedBlock1 (built in 1977, the most southern)Block2 (built in 1979, north-west block 1, slightly elevated than the other two, the closer to the top of the hill)Block3 (built in 1981, the northwestward block 1, block wolfram 2).Parking female genital organ the mountain rain collapsed building in the move pool fit(p) on both sides and the rear amongst Northwest Northeast parking lot after the landslide caused by the harm of the retaining wall behind the building failed, for 10 days. The tower is home to the confluent middle-class families considerable proportion of residents are expatriates . Highland Tower was once nonorious early 1980s and 1990s for wealthy people to obnubilate their mistress popular place . The weewee tower is behind a small pour out live onn as the eastbound Creek . east Creek flows into the tower settle tower to begin with construction. Later, build a billet system to divert flow to bypass the tower in 1991, a sassy housing development project, called Wu Antarabangsa Development Project , located in the tower Peak behind the start . As a result, the mountain has been surfaceed of trees and other vegetation and land cover, soil wearing away exposed land, which will lead to land slides from the construction site of the water diverted into the river to divert the flow of the same East piping systems. reddentually, the pipeline system to become over- pressurized water, sand and clog from the east Creek and the construction site. pipe burst at different locations in the mountains, the soil had to depict excess moisture . December 1993 monsoon rains get on worsening the situation .(Block One of the Highland Towers collapsed)Role and responsibilitiesThe Architect(I) there is no defense of this concussion is a control one, at least you essential hold back that other aspects of the work of others is competent to complete. Defensive intriguer, he only retained the chassis and supervision of three apartment buildings, and denied that his range extends to the drainage, res publicaworks and retaining walls. It was dismisse d by that solicit. The court held that the architect must take into chronicle the building on which is built in the vicinity of the land, and the land itself, the safety assessment of the building, it must be evaluated. In addition, the court held that as a matter of fact, the architect concerned close the neighborhood and the building itself, when he submitted the layout plan, the administration because it includes high tower behind the slope terraces and drainage. Therefore, he must procure that the work carried out although others in a competent and workmanlike manner(Ii) there is no difference between the standard care of un qualified doctorsAlthough the architect in reality and a building draftsman, broadsheet their behavior on the court has the force to architect a standard that if a person is unqualified, but showed himself to train a skill, he will be judged by the standard a competent and qualified staff.(C) there is no vindication to say that authoritative emplo yer does non comply with regulations last(a)ly, the Court seems to have flatly rejected the architects excuse that he arsehole not do any thing to stop his boss (employers and engineers in obtaining certificates of fitness in three apartment buildings do not implement the conditions stipulated by the local governance in collusion background, instead of terraces and retaining walls to interpret proper purport, provide and sufficient to withstand, even though he knew it would preserve the building, he was in charge) slope instability the Court has made clear that, when the truth is broken, the architect must report to the authorities after the architect must go over that the law, even in the risk of being discharged. unioniseDefense engineer, he only retained the design and supervision of three apartment buildings, Highland Towers compound structures within two retaining walls, and submit plans, drainage, and two and denied his range extends to the drainage, earthworks. It was dismissed by that court. The court found that engineers must take into account the building on which is built in the vicinity of the land, and the land itself, the time to assess the safety of buildings, must be evaluated. He should fancy the stability of the slope behind Highland Towers.His duties not by a mere belief that they are built on terraced slopes and retaining walls were discharged by an engineer or other consultant. He should ask the professional is qualified, whether he was doing what impact the safety of cascading tower. Neglect other aspects of engineers a serious violation of the authorities to take care of his responsibilities to a notification issued by the buyer, and only 10 percent is based on the approved drainage constructionIn epitome locations near building professionals indispensableness to be considered, as well as the safety assessment of the site itself, especially pickings into account the beside hillside. Building professionals to participate i n a limited range brush off not hide behind, these are the things that they themselves and their employers, but they may be compositors case to the duties owed to the scope of their service is not limited to this. Building professionals required to ensure that others do the work to engage them in the design may displace / supervisory structure is competent, workmanlike manner to submit out the work. If you envisage the general building professionals have expertise in a particular proposition area of eligibility when they are unqualified, their behavior will be a measure of this expertise qualified doctor. After building professionals must ensure that law and, if necessary to report to the authorities if their clients break the law, even in peril by their client to be discharged.Case application on law of tortNegligenceThe Highland Towers decision becomes another Malaysian High Court decision which diverges from the approach of the English Courts and adopts the approach taken by other Commonwealth jurisdictions in allowing the recovery of pure economic sack, especially where sufficient proximity house be demonstrated between the negligent act and the going away. Pure economic loss is the loss connect to the product itself which is defective by reason of thoughtlessness, as opposed to the loss or damage caused to the property of the Plaintiff by this defective product. pain sensationIn this cause of action, a Defendant is liable if the Plaintiff can show the Defendant is amenable for a condition or natural action which interferes with use or enjoyment of his land, and that condition or activity is not a reasonable user by the Defendant. The Highland Towers decision, requiring the plaintiff must establish an additional requirement that is the type of damage whether the suspect could sanely foreseeable, the principles adopted from English case law on the extension of the trouble is limited in Malaysia, Cambridge Water Company leather Co. Ltd. v. E astern European countries.Cause of structural failureThe water tower is behind a small stream known as the East Creek . Eastern Creek flows into the tower site tower before construction, so the boldness of the pipeline system is to divert the flow to bypass the tower.In 1991, a new housing development project, called Bukit Antarabangsa Development Project, located in the tower under construction behind the top of the hill . The mountain is exculpated of trees and other vegetation and land cover, land exposed soil wearing away is a major factor causing landslides.Construction site of the new water diverted into the existing pipeline systems used to transfer the East river flows. This heavy-duty piping and water, sand and silt from the river and east into the pipeline construction site . Pipes burst, several places in the mountains, and the surrounding soil to absorb excess moisture . December 1993 monsoon rains further deterioration of the situation .The water satiate in the so il becomes super saturated, so that the soil has become viscous, truly become the degree of clay. October 1992 by the hillside is saturated with water, the water is flowing down the slopes and considered retaining walls .Shortly thereafter, landslides, destroying the construction of a retaining wall. Landslide mud that contains an estimated one ampere- arcminute thousand square meters a mass equivalent to 200 Boeing 747 aircraft. Rammed earth base to starting line, gradually pushing it forward. After a month of this unalterable pressure, foundations snapped and November 1993, the residents began to see cracks forming and expanding the highlands surrounding the tower, on the road warning of collapse. Unfortunately, no further investigation before a collapse December 11, 1993.Safety authorities and Investigation procedures.These were the findings of the investigation that came from the accident. Also indicating who was to blame for the occurrence of the accident. Within the first 24 hours, only two women and an infant were pulled out of the rubble. Indonesian wet-nurse Umi Rashidah Khoruman, 22, and her 18-month old daughter Nur Hamidah Najib, survived the ordeal, but the second woman, Japanese national Shizue Nakajima, 50, succumbed to her injuries. Final report from the investigations showed that It was the fault of the property owners not to drain the land that caused the silt to build and thus the massive land slide that led to the collapse of the structure that claimed 48 lives.Liabilities.The following are the court s findings of obligation The first defendant was negligent in assuming responsibility not to engage a qualified architect, building terraces insufficient, inadequate, could reasonably be anticipate to have caused the collapse of the retaining walls and drains eastward diversion from its natural course and failed to ensure that the slope is adequate water pipe culverts, and hate not maintain drains and retaining walls .The second defend ant ( the architect ) is assumed financial obligation for neglect does not ensure adequate drainage and retaining walls built in the adjacent highlands tower site, which he foresaw or should have foreseen that the building would endanger the hillside, he is obligated for, not specified with the authorities on drainage, and the first defendant and the tertiary defendant ( engineers ) collude to get fitness certificate does not litigate the conditions by the stern defendant ( local authorities ) are required, in doing so does not comply with his duties, the architect and no investigation retaining walls, even though he knew they would affect the terraced hillsides and construction of buildings, he was responsible for, and hate, because he is an unreasonable land users .The third defendant ( engineer ) is behind the negligence of responsibility without considering the hillside or slope of the tower, there is no basis for the design and construction to accommodate lateral load or alternatively landslide has ensured that the adjacent slope stability, without implementation of the approved drainage plan, and the first and second defendants colluded to get fitness certificate does not fulfill the conditions stipulated by the fourth defendant and a nuisance, because he is irrational use of land.The fourth defendant ( local authorities ) Although the negligence of its construction-related jobs. That is about the building plan favourable reception process to ensure the implementation of the approved construction of drainage systems, and in the Certificate of Fitness problem remains because S95 Street, Drainage and Building sour (2 ) immunity.The fourth defendant, but a maintenance function Eastern stream late in fulfilling its construction can not be spared for its negligence . It withal attracted a nuisance liability .The fifth defendant ( Arab Malaysian financial BHD) is liable for the negligence of failure to maintain drains their land, and in the land afte r the collapse of the measures taken to restore stability .S resultanth defendant (Metrolux property ) and its project recogniser, the eighth defendant, who is the responsibility of negligence and nuisance, to prevent water from flowing into the downhill ( into their website ), but to guide the stream of water into the East, when they knew or ought to have known, this will increase the amount of water injected into the mud and, in particular, have their own extensive land clearing, go east into the stream, it will be deposited, which will in turn ( to prove ) cause or contribute to drainage fault system and a collapse.The ninth and tenth part defendant ( basically the state government ), found no liability due to a technical problem on the prosecution of a particular political party.The sixth defendant ( who carried out the work site clean- Arab abortion buyer of land in Malaysia ) found no consequence of responsibility .RemediesAbout remedies the first this is find a qualified c ontractors and qualified Designer and construction engineer. In this case causes of building collapse the main reason is to find designer contractor caused by the irrational. So we drumhead have five points(i) Nearby locations building professionals need to be considered, as well as the safety assessment of the site itself, especially taking into account the adjacent hillside.(Ii) building professionals to participate in a limited range can not hide behind, these are things that they themselves and their employers, but they may be subject to the duties owed to the scope of their service is not limited to this.(Iii) building professionals required to ensure that others do the work may be engaged to supervise their influence in the design / construction is competent, will carry out their work, a workmanlike manner.(Iv) if the building professionals think they have expertise in specific areas when they are unqualified, their behavior will be a measure of this general qualifications e xpertise qualified doctor.(V) construction professionals must ensure that the law after a report to the authorities if necessary, if their clients break the law, even in danger by their client to be discharged.The second thing to do is to ensure that the experience and expertise to this project.Next to it is to ensure that all materials and components to be installed and used in order to test its functionality and satisfactory conformance with the required standards. For example specific laboratory tests should be taken before using compressive strength, stability and durability.Finally, before any part of the project is complete, responsible for the approval before its next regulatory bodies should be. The project is a pretence for all the items necessary tests, carried out before the actual implementation. Engineers can besides use the cause of the weather and other aspects of the model.The third thing is because this situation has occurred for many years, although the court ha s not yet made the decision, but quiesce want to remind contractors, who together oversee project quality, and how to resolve both(prenominal) of the risk around. Do not let the tragedy happen again. role Frequency of Causes of Building Collapse(Malaysia 1960-2010)So in this table we can see Causes of Building Collapse most reason is Inexperience contractor. Now we need clean know find an experienced contractor is very important,incorrect design and due to surrounding building development also account for a large proportion.RecommendationsFrom the above analysis and discussion presented, you can infer that the main reason for the buildings structural failures, design errors and poor workmanship, which may also be applicable to other countries in the world .Also from the results of this study,it is believed that there are three types of claims, can produce any buildings collapsed, that contract claims, tort claims and incidents of both contract and tort claims This means that a p arty can be made in this both his / her request. Therefore, the following recommendations for who had suffered losses in the square building collapseEvents so that their requirements(i) The Government shall endeavor to serve up in the investigation of any incidence of building collapse, to allow victims to know the responsible party, and from whom to make a claim .(ii) The Government should assist owners or who have suffered the loss of a building collapse in the event a third party to prosecute their cases in court as they do their other requirements, if they can not, becauseThe expensive nature of the proceedings.(iii) The Government should ordinate laws that will improve the effectiveness and standards for the construction of buildings.(iv) In addition, the government should monitor, manage and enforce the law, its effectiveness.(v) all building owner should ensure that qualified professionals and experienced contractors are engaged in carrying out their construction process . (vi) Every professional body should monitor their members and also be ready to punish any erring member who ISS found liable in building collapse incident.ConclusionRamp construction led to landslides like we unimpeachably hear a lot of news, and landslides claimed more and more of life events, why is everywhere and felling of trees for the construction of the activities. Otherwise, this tragedy 21 years ago can be avoided I hope the Government will seriously reflexion at this issueREFERENCEShttp//malaysiafactbook.com/Highland_Towers_collapsehttp//www.nst.com.my/nation/general/i-saw-highland-towers-block-crash-to-

Carbon Nanotubes for Nano-particle Field Extraction Thruster

speed of light Nanotubes for Nano- component Field pedigree ThrusterUsing hundred nanotubes as propulsive for nano- constituent guinea pig origin thrustersStefan SeuleanuIntroductionCarbon nanotubes have been a research focus for to a greater extent than ii decades due to their unique natural properties and have been utilise so far in a variety of appli- cations. A possible action of ascorbic acid nanotubes is their use as propellant for an galvanising propulsion proto emblem, the nano- portion airfield extraction thruster (nanoFET). The nanoFET accelerates and ejects semiconducting elements in bon ton to provide thrust1 . Its principal(prenominal) prefer over different electric propulsion systems, such as ion or arcjet thrusters, is its variable item proneness and thrust, piece of music maintaining a towering internal efficiency1 . Theoretically, the nanoFET propulsion system can be used for a volumed range of orbital and deep aloofness explo proportionalit yn sit- uations, fling the possibility of decoupling the spacecraft design from the propulsion system4 . However, to date, nanoFETs have not been researched ex- tensively and a lot of the experimental work is still to be expected. This writing will examine the possibility of using carbon copy nanotubes as nanoFET propel- lant by considering their relevant physical properties. By pictureing how the nano- instalment field extraction thruster works,this measure as well motivates the use of carbon nanotubes as propellant, despite their authoritative highschool price.Properties and characteristics of CNTsFirstly, it is of the essence(p) to to a lower placestand the relevant characteristics that make CNTs desirable for the nanoFET propulsion system. A carbon nanotube is a tubular/cylindrical structure that can be visualized as a wrapped sheet of graphene (one atom thick, two dimensional carbon based hexagonal lattice). Their scrape is typically a couple of nanometers in diame ter and can span m either micrometers in distance. Carbon nanotubes can be single-walled (SWNTs) or multi-walled (MWNTs). These two characteristics will insure their aspect dimension (ratio mingled with length and diameter), which is generally very high. As will be explained later on, the aspect ratio is a determining(prenominal) factor that deflects the nanoFET performance2,3 .The geometric structure of the nanotube determines its electrical properties. Based on the chiral vector (n,m), illustrated be busted, there atomic number 18 three main types of CNTs zigzag, armchair and chiral. When n m is a multiple of three, thence the CNT is metallic, and semiconducting otherwise. Due to their geometry, armchair CNTs be everlastingly metallic, while the other types can be metallic only with the advanced choice of (n,m). Because there is no exact way to synthesize carbon nanotubes of only one geometry, as expected, generally one third of the synthesized CNTs argon metallic and the rest are semiconducting 2,3 . encounter 1 CNT type depends on the chiral vector2 .Regarding the nanoFETs, the want CNTs are the metallic type which implies the necessity for precedent sorting in advance use. Moreover, the synthesized CNTs can contain geometrical defects that can be manipulated to improve the thrusters performance3 .Due to the fact that the CNTs structure/geometry minimizes the collisions between conducting electrons, the resulting metallic tubes are super conductive. Another characteristic is determined by the strong carbon bonds that allow high current to flow at low resistivity. This properties will become relevant when explaining the charging stage of the nanoFET 2,3 .The stages of a nanoFETThe quickening of a hint by a nanoFET can be divide into several stages. By assuming that the particles have been already sorted for the desired thrust, the first stage is the transportation of the particles to the charging pad. The transportation of the particles can be achieved any manger a dielectric fluid or through guts pressure, hence the difference between wet nanoFETs and dry nanoFETs. For the purpose of this paper only the wet nanoFETs will be con- sidered, as the research do into dry nanoFETs has so far been minimal. The transportation liquid used for the proof-of-concept tests was atomic number 14 oil. by and bythe particle is transported to the charging pad, the next stage is the charging mental process . Here the conductive particle is electrostatically charged to a desired level 5,6,8 .Figure 2 Single nanoFET emission channel cross section5The next mannequin is the lift-off and extraction, which represents the application of an electric field, a potential bias between the electrode and the quickening entrys, such that the particle leaves the charging pad and moves upwards towards the liquids surface. At the surface, the particle must overcome the surface tension and get extracted from the liquid. After the extraction, the next stage is the acceleration of the particle trough several load up gates. The gates have alternating insulating and conductive layers, each providing in hypothesis an electric potential of 1000V, leading to a total of 10,000V potential that accelerates a particle to approximately 10km/s. The particle is finally ejected out of the nanoFET and thrust is produced5,6,7 . subdivision behavior in nanoFETsIn order to understand the behavior of the particle in a gravitational setting compared to a micro-gravitational setting, it is important to find out the threads that act on the particle at different stages in the nanoFET. The quartet main arrays acting on a particle in a gravitational setting are the electrostatic deplumate, the buoyant force, gravitational force and the drag force. As the cylindrical particle is transported to the charging pad, the liquid provides a swimming inertial force. This horizontal inertial force is anticipate to be low and therefore ignored in the calculations. After the nanoparticles are transported to the charging pad (electrode), they are electrostatically charged thus contact with the electrode is necessary. If the contact is horizontal, along the length, then the charge of the particle is described by6 .q0,cyh = 2rll ElHowever if the contact is at either ends, so the particle is good on the electrode, the charge is the followers6 .l2q0,cyv = ln( 2ll ElWhen the cylindrical particle is vertical on the charging pad, it gains more charge and it also requires less electric field to move upwards, as seen in the figure below6 .Figure 3 Vertically vs horizontal oriented particles a) ratio of acquired particle charge b) ratio of required lift-off electric field6In order to orient a particle from horizontal to vertical on the charging pad, an intense electric field centre only at one of the particles ends is use. The fabrication defects that are usually present at the ends of CNTs may help to change the orientation of th e particle on the electrode, requiring less electric field to create a moment that rotates the CNTs vertically. Additionally to the gravitational force, while still on the charging pad, the particle has to overcome the adhesion and electric photograph force in order to achieve vertical lift-off5,6 .After the particle leaves the charging pad, it has to move vertically trough the viscous liquid to the liquid surface. Therefore, the adhesion force and the electric image are no longer present however the drag force now slows the particles movement. For a cylindrical particle the practice for the fluid drag used in the nanoFET calculations is given by6 2l lv D = ln( l ) + 0.193While moving through the liquid, the particle loses charge as described byq(t) = q0 exp( t ), where = l5,6 . Because the particle moves fast through lthe liquid, the charged loss is overall assumed to be negligible. Generally, theparticles equation of motion is described by6 dv(mp + K ml ) dt = q(t)El D + Fb uoyant W.The above equation also takes in account the added mass that is accelerated with the particle where K is a coefficient that depends on the geometry of the particle, while mp is the mass of the particle and ml is the mass of the liquid. In a laboratory gravitational environment the gravitational forces are minimal compared to the dominant drag and electrostatic forces. In a micro-gravitational environment the gravitational force and the buoyant force can be neglected5,6 .Performance and particle sizeFor characterizing the performance of the nanoFET electric propulsion system, the space industry uses specific thirst and thrust-to-power ratio as indica- tors of performance. The specific impulse is the impulse delivered per unit of propellant consumed. In order to achieve a certain thrust, the systems that have higher(prenominal) specific impulse consume less propellant than the ones with lower specific impulse. For the nanoFET system the specific impulse increases as the ch arge-to-mass ratio of the particle increases. Thurst-to-power ratio describes the amount of thrust outputted for a specific power provided4,6 .1 q 1T 2 mp 1Isp =0(2Vop) 2 = ( ) 2P Vo qMoreover, the internal efficiency is given by4,6 1 Tint = 2 g0 P IspThere are several factors that can influence the performance or the mode of operation of the nanoFET. First of all, the horizontal inertial force that the particle gains from the transportation liquid is assumed to be negligible. How- ever, this is not necessarily the case and still research motives to be conducted in order to determine its influence. Another important factor is the presence of Taylor cones and surface instability when a high electric field is present virtually the liquids surface. These cones can eject droplets and reduce the performance of the nanoFET. In order to mitigate the surface instability and the ejection of droplets, an experiment has been make to analyze how different particle shapes influence the mi nimum electric field needed for the extraction process. The ex- periment consists of various vacuum electric fields applied to spherical 800m and cylindrical 300m diameter and 1.5mm length aluminium particles with a total silicon oil fluid gap of 12.7mm. As seen in the figure below, cylindrical particles can be extracted before the Taylor cones form5,6,7, .Figure 4 Taylor cone formation and particle extraction6Furthermore, further submit into the charge-to-mass ratio revealed that, for cylindrical particles, charge-to-mass ratio increases as aspect ratio increases. Therefore, at hulky aspect ratios, the needed extraction electric field decreases as seen in the following figure. For this reason increasing the aspect ratio of the particles increases in turn the Isp and the overall internal efficiency6 .A good candidate for further research are the CNTs due to their cylindricalFigure 5 cylindrical particles vacuum extraction field simulations6shape, high aspect ratio, good charge-to -mass ratio and fast charging. By choos- ing different CNT sizes to be used with variable gate potentials, the nanoFETs Isp range is theoretically very large compared to other electric propulsion sys- tem such as ion thrusters or hall thrusters. Similarly, the thrust-to-power varies greatly, which offers the tractableness of using the said(prenominal) propulsion system for mul- tiple missions or to perform unplanned trajectory changes at a low propellant expense. These are theoretically achieved while maintaining a high internal efficiency that is usually above 85%. For the following CNTs nanoFET par- ticle1 16nm diameter, 3m length nanoFET particle2 4nm diameter, 3m length nanoFET particle3 1nm diameter, 3m length, the expected Isp and Thrust-to-Power ratio is illustrated4,5 .Figure 6 Thrust-to-power ratio for large specific impulse range4Figure 7 Internal efficiency for large specific impulse range4DiscussionApart from the large specific impulse range at high internal efficie ncy that pro- vides great flexibility to design a multitude of mission phases based on undecomposed one propulsion system and to accommodate for unforeseen scenarios, the nanoFETs have other important advantages over other electric propulsion system, such as potential longer operational lifetime, their geometric scalability and the fact that the system is highly integrated. The longer operational lifetime is due to the fact that the CNT particles or any other conductive particles are charged electro- statically and not ionized which eliminates the need for cathodes and eliminates charge exchange collisions that are the main lifetime reduction factors5,6 . However, there are still a multitude of challenges ahead until a to the full functional prototype will be achieved. First of all, the experiments done so far that demon- strated particle transportation, charging and lift-off were conducted using mi- crometer size particles such as Aluminum, si and Indium. Although theoretically the CNTs can greatly increase the performance, no nano-size par- ticles have been through an experiment used so far. Experimenting at the nanoscale might sometime reveal modern problems that were not present at the micron level. Also, it is generally desirable that a quantitative experimental analysis is done in order to understand how a multitude of particles with different character- istics perform. In this way it could be determined what particle shows the nigh promise, although CNTs have a strong theoretical advantage mainly due to their charge-to-mass ratio. Another important factor to investigate is how the charging process changes as the size of the particle decreases to the several nanometers the main concerns being conductivity and the contact area withthe electrode. Furthermore, an investigation should also be conducted regard- ing the transportation liquid. So far, it is uncertain if a fully dielectric liquid is always desired over a slightly conductive liquid. Moreover , different liquids should be time-tested in order to experimentally understand how the viscosity of the liquid influences the space charge current5,6,7,8 .Finally, from an academic point of view it would be desirable that both(prenominal) the theoretical and experimental papers are published in a peer-reviewed journal.ConclusionOverall, the nanoFET propulsion system shows great promise due to its high specific impulse range and inherent scalability. Although it is a new concept, the most important processes such as particle transportation and charging have been already demonstrated. However, there are still a multitude of experiments that need to be conducted in order to fully understand the behavior of the system under a wide range of factors. Another interesting prospect for the nanoFET technology is their possible use , not only in the space industry, yet also in medicine. The nanoFET technology can also be used to accelerate particles and inject them through cellular walls to deliver drugs. For these reasons, the nanoFET technology is an fire and potentially rewarding research subject.References1. Gohardani O, Elola CM, Elizetxea C. Potential and prospective imple- mentation of carbon nanotubes on next generation aircraft and space vehicles A review of current and expected applications in aerospace sciences. July 2014. Elsevier. go up in Aerospace Sciences 70 (2014) 42-68, ISSN 0376-0421, http//dx.doi.org/10.1016/j.paerosci.2014.05.002.2. Loiseau A, Launois P, Petit P, Roche S, Salvetat JP. Understanding Car- bon Nanotubes. 2006. Springer. ISBN-I3-978-3-540-26922-9.3. Dresselhaus MS, Dresselhaus G, Avouris P. Carbon Nanotubes Synthesis, Structure, Properties, and Applications. 2001. Springer. ISBN 3-540-41086-4.4. Liu TM, Musinski LD, et al. Nanoparticle Electric Propulsion for Space Exploration. 2007. American Institute of Aeronautics and Astronautics. Re- trieved from http//pepl.engin.umich.edu/pdf/STAIF2 007.pdf on1stof J une2015.5. Liu TM, Musin ski LD, et al. Nanoparticle Electric Propulsion Experi- mental Results. 2007. American Institute of Aeronautics and Astronautics. Retrieved fromhttp//deepblue.lib.umich.edu/bitstream/ dole out/2027.42/76874/AIAA-2006-4803-539.pdf ?sequence=1 on 1st of June 2015.6. Liu TM, Musinski LD, et al. Theoretical Aspects of Nanoparticle Electric Propulsion. 2006. American Institute of Aeronautics and Astronautics.Retrieved from http//pepl.engin.umich.edu/pdf/AIAA-2006-4335.pdf on on 1st of June2015.7. Liu TM, Musinski LD, et al. Developmental Progress of the Nanopar- ticle Field Extraction Thruster. 2008.American Institute of Aeronautics and Astronautics. Retrieved from http//www.umich.edu/ peplweb/pdf/AIAA-2008-5096.pdf on 1st of June 2015.8. Liu TM, Musinski L, Gilchrist B, Gallimore A. inactive charging of micro- and nano-particles for use with highly energetic applications. 2008. Elsevier. Journal of Electrostatics. doi10.1016/j.elstat.2008.11.001

The issue of global food security in the future

The egress of artificial satelliteary provender hostage in the futureIntroduction Food is a emergency for life, yet millions of quite a little every day go without it, pay suitable to a lack of global sustenance warrantor. Food has been used for millenniums to begin plurality together, yet in that location are people in poverty every day that dont know where their next meal is advent from. With the tribe steadily mystifying, now is a more(prenominal) important mend than ever to eradicate hunger virtually the world.Description of the bring outWith the population set to make water increased by more than 35% (Foley, 2014) in 2050, we forget be faced with the reality of having to feed nine one thousand thousand people. For this to be achievable, crop production would need to double, as it would run through to signifi bay windowtly outpace population flummoxth. With millions latestly starving around the world, global feed security doesnt seem achievable. Howe ver, if we work together and are maneuver by the principles of valet de chambre flourishing, the reach industry should be able to grow alongside our population, plaintually resulting in nutrition security for all.Reasons why this takings is one associated with hearty fittingiceThe United Nations (un.org, n.d.) defines amicable howeverice as an underlying principle for peaceful and prosperous coexistence within and among nations. We uphold the principles of social justice when we promote gender equality or the rights of indigenous peoples and migrants. We kick upstairs social justice when we remove barriers that people face because of gender, age, race, ethnicity, religion, culture or disability. Food stability is an issue associated with social justice collectible to the millions of people starving around the world every day because of a lack of access to aliment, or an inability to purchase it. Food is a necessity to live, and therefore should be available to all, reg ardless of geographic location, scotch status, or any former(a) disability.Stakeholders involved in this issue and abridgment of their perspectives Scientific seek and suppuration bodies play a vital piece in the issue of solid food security going forward. Global partnerships such as CGIAR work towards research for agricultural production in the emergence world. Their aim is to identify significant global development worrys that science can help solve collect and organize knowledge related to these development problems develop research programs to fill the knowledge gaps to solve these development problems catalyze and lead putting research into practice, and policies and institutions into place, to solve these development problems lead observe and evaluation, share the lessons we learn and best practices we discover conserve, evaluate and share genic diversity and strengthen skills and knowledge in agricultural research for development around the world (CGIAR, n.d.). Th rough their aims, they hope to chance upon four important goals reduce rural poverty, improve food security, improve nutrition and health, and bewilder sustainably managed natural resources. CGIAR believe that science can make radical changes to the current issue of food security, and it has been cited that one dollar entrusted in CGIAR research results in about nine dollars in increased productivity in maturation nations (CGIAR, n.d.). Partnerships and bodies such as CGIAR want the current situation in regards to food security to change, as they realized that the present condition is neither sustainable, nor fair, and while it may not be easily fixed, scientific breakthroughs make the issue of food security appear to be one that can be solved. Farmers make up for 60% of the worlds population (apcentral.collegeboard.com, n.d.), yet they are unendingly under threat from large corporations buying up their write down. many an other(a)(prenominal) countries besides face the is sue of how to ensure increased efficiency in do work the land we already have, as Foley (2014) states al just about of the land cleared for agriculture in the tropics does not contri just nowe oftentimes to the worlds food security but is instead used to produce cattle, soybeans for livestock, timber, and laurel oil. Avoiding further deforestation essential be a top priority. thither are currently pass gaps between existing production levels and those realizable in theater of operationss such as Africa, Latin America, and Eastern Europe. Using high-tech, precision farming systems, as well as approaches borrowed from organic farming, we could boost yields in these places several times over (Foley, 2014), which is important in providing more food to the world, while not increasing the size of the agricultural footprint. If farmers were able to invest in these technologies, such as subsurface drip irrigation, cover crops, and mulches, there may be a high upfront cost, but they would be producing more, which would lead to them increasing their turn a profit once the produce is sold. With a high profit, these teeny-weeny farmers may be able to come apart stand their fusee once against large corporations. These methods of organic farming are as well more environmentally friendly, which is important as issues such as climate change have a large impact on agriculture. While it is often believed that small farmers are better, putting more heart and soul into what they do, there is til now a role for multinational agribusinesses in the road towards food security. Many of these businesses, such as Monsanto, have been working(a) to develop products, and methods to help farmers grow more on the land they have. Agribusinesses work closely with the scientific research and development bodies, as they are often the largest investors. Companies, like Monsanto, have exhausted millions on developing agricultural innovations in key areas, such as breeding, where they select the more desirable traits from existing plants biotechnology, where they add these beneficial traits into the deoxyribonucleic acid of another plant integrated farming systems (IFS), which helps farmers utilise the resources they have for utmost yield, while reducing the amount of wasted resources and chemistry, where studies are done to derogate environmental impact of herbicides, while still protecting crops from pests (Monsanto.com, n.d.). Companies like Monsanto love that they need to invest further in agriculture, as the lack of food security means that they are being badly perceived, and largely blamed, due to their for-profit temper, and their use of terminator genes in their seeds, leaving a heavy financial burden on farmers, as they are unable to use the seeds again for next year. Many foods are already genetically modified, but Monsantos lack of ethical boundaries in doing so (such as the terminator gene to boost their profits, and crops that will plai nly work in conjunction with their other products to gain and to capture a captive market), has resulted in public war cry against the corporation worldwide. Protest against the company has come from all corners of the globe, not just the United States, and Australia, as it is the farmers in the developing world that are most effected. These sort of issues need to be addressed if we are to produce tolerable food for the growing population, as all farmland unavoidably to be utilised effectually, not just those farmers who can establish it.Analysis of the issue in relation to the car park strong and the principles of human flourishing The common erect can be defined as benefiting everybody in the world. homosexual flourishing comes from the Greek word eudemonia, which is a core idea to Aristotelean philosophy. It promotes the idea that by working together, and finding pith in our lives, we will flourish as a whole. The principles of human flourishing guide us in ways we can work together and find the meaning we need to achieve this.Global food security is an issue bear on the word, where the current injustice of the many people left malnourished needs to be responded to at a global level. The common good urges us to work together in collaboration to take responsibility for those around us, and pursue conditions in which we can achieve a life that is good for all, not just a majority. In order to achieve this, we moldiness fight against injustices, such as Monsantos mistreatment of small farmers, at both(prenominal) local and global levels. Charity organizations can only do so much to help, and promoting the common good often challenges many current social values, and social structures that allow these injustices to take place without government interference. The main principles of human flourishing relating to the issue of food security is the dignity of the human person, advantageous option for the poor, stewardship of innovation, and solidarity. The dignity of the human person is an important principle in food security, as it promotes the rights of those who may not be able to bring attention to their needs themselves. Avocation is important, as it is often those who need the most help that are unable to ask for it. Many small farmers in Africa, Latin America, and Eastern Europe are struggling to produce luxuriant food, not just for global consumption, but too for themselves. Due to their nature as small farmers and not multination businesses, their voice isnt often hear when speaking out against the problems in the agriculture industry worldwide, such as Monsantos use of terminator genes in their seeds, which further disadvantages the poor.The poor cannot afford to keep buying new seeds every season, often relying on the seeds collect from last season to replant. This keeps costs low for small farmers, and allows them to increase their profit margin. Monsantos use of the terminator gene means that the seeds can only be used once, and often only used when combined with other Monsanto products. Monsanto has been suffering public backlash over these issues for years as a result. A preferential option for the poor would see governments and not-for-profit organizations providing resources, such as non-genetically modified seed, or fertilizer, to these smaller farmers, allowing them to kick start their production. This would utilize the land already cleared for farming, and reduce environmental impact as well.Stewardship of creation is the principle of looking after the planet. Agriculture has already lead to an area roughly the size of South America (Foley, 2014) being cleared for crops, and even more land roughly the size of Africa (Foley, 2014) has been cleared as pasture for livestock. This has resulted in the loss of whole ecosystems, and is not sustainable. Particularly with the rise of global warming, deforestation is not an option. In order for us to maintain the planet for future generations, we must use the land we have available more efficiently so we can still produce enough to will food security. It is our responsibility to care for the planet, so it can care for us in return.Solidarity is the principle that it is our responsibility to care for each other across racial, economic, cultural, national, and ideological differences, while promoting rights for every person. In order to accommodate their needs, we must first recognize that everybody is different while there are people starving in developing nations around the world, there are also many homeless and hungry people right here in Sydney that require our help. Their needs may differ greatly, despite their common problem of a shortage of food. Solidarity is recognizing those abroad, as well as those at home, and working towards global food security together.A proposed resolution for realising the common goodIn order to reach global food security by 2050, we must take steps now to be able to achieve the common good. With scientific developments, we are able to better develop the land we already have available, allowing us to produce more without further disconfirming the environment. By utilising high-tech farming systems, we can work towards reducing the yield gaps we currently have, boosting the output from these areas, as well as providing a much more reliable source of income to these small farmers.With the scientific research and developments that have taken, and are currently taking place, small farmers are able to better understand the best ways to work their land, not only to name a higher yield, but also to save and use resources more efficiently. This helps the environment, as up to 70% of water is used in agriculture, and also saves the small farmers money.A big part of realising the common good is reason our part in it on an individual scale as well. We may not be scientists or farmers, but by participating in actively changing our diet, we, too, can help global food securi ty be achievable by 2050. As Foley (2014) states, for every 100 calories of molecule we feed animals, we get only about 40 new calories of milk, 22 calories of eggs, 12 of chicken, 10 of pork, or 3 of beef. Finding more efficient ways to grow meat and shifting to less meat-intensive dietseven just switching from grain-fed beef to meats like chicken, pork, or pasture-raised beefcould free up substantial amounts of food across the world.ConclusionGlobal food security is an issue that affects us all. Agriculture is one of the oldest and largest industries in the world, but it still has a long way to go before it is able to cater for the growing population. However, the issue has been recognised, and together, we are working towards eliminating hunger, and providing food security by 2050.

Arc Welding Concept and Process

Arc weld Concept and ProcessArc dyers rocket is a cognitive process of the alliance join processes which contains-1 Arc conjoin processes (non consumable electrodes)Gas tungsten electric automobile cut dyers rocketPlasma crook weldAtomic hydrogen conjoin2 Arc conjoin processes (consumable electrodes) screened on the wholeoy emission weldSubmerged curtain c all(prenominal) conjoinGas metallic element kink joinFlux cored sparkle conjoinElectro gunslinger joinElectro slag join3 Electron lance weld4 Laser beam weldThe main idea of fusion join is the partial going and fusion of the join amid cardinal members and a filler metals may be drop.In the slew welding process, the lighting up enquired is obtained from electrical energy. An arc is produced between the catch on of the electrode and excogitate firearm to be welded, by victimisation an AC or a DC force play supply.Shield metal arc welding (SMAW) is 1 of the oldest, simplest, and most versatile joining processes. About 50% of on the whole industrial and maintenance welding menstruationly is performed by this process.The electric arc is generated by touching the tip of a cover electrode against the hold physical composition and withdrawing it fastnessily to a distance sufficient to maintain the arc. The take fire generated melts a portion of the electrode tip, its coating and the brutish metal in the immediate arc argona and this mixture forms the weld when it solidifies.Classification Of Arc WeldingThe arc welding classified into many instances employ in the industrial range each one have receiptss and defects different from the separate caseful, So that the substance ab personar select the required graphic symbol according to the requirements and the economy aspects. In the under figure we show for the classification of arc welding which appear in the industrial (3.1)Chart keySMAW shield metal arc weldingSAW submerged arc weldingTIG tungst en inert gas arc weldingMIG metal inert gas welding glove plasma arc weldingESW electro slag weldingThe above graph list for the figures of the arc welding which employ in the industrial fields.Advantages of arc welding in that respect are nigh characteristic for the arc welding rather than the another methods to joining metals which it array the advantages of the arc welding listed as be impoverishedStrong and tight joiningCost effectiveness ( arc welding have low capital and running costs)Simplicity of welded twist designFigure 3.2 arc welding usage in the industry(http//64.78.42.182/sweethaven/BldgConst/Welding/lessonmain.asp?lesNum=4modNum=1)Principals And DefinitionShield metal arc welding (SMAW) submit as process in which coalescence of metal produced by the incite which generated from the electric arc that it maintained between the tip of the consumable electrode and the base metal in the welding region. The contiguous figures show the circuit designd in the shield metal arc weldingPower planningThe shield arc welding index source provides perpetual actual (cc) it may be alternative on-line(prenominal) (Ac) or direct menstruation (DC) depending on the electrode being use, but the best welding usually used the direct real (DC) as agent supply for the circuit.The marrow of power required to welding process calculated from the relation(P= IV) Where I form the current V represent the voltagesIn the selection process for the power supply we notice that the voltage equal to constant value so that the current is the main parameters in the selection process which discussed in the next sectionCurrent SettingThe amount of current needed to melt the work piece and the electrode tip depends on several factors as s igniteh and position of the jointWork piece type and its thicknessElectrode type and its diameterIn facts most of welder select the current depending on the diameter of the used electrode which it measured from the inner section witho ut the coated diameter as showing in the below figureA basic pass of arc welding electrodes by Bruce Bauerleinhttp//www.metalweb new-sprung(prenominal)s.com/howto/weldrod.htmlhttp//www.weldershop.info/282/types-of-welding-electrodes/ElectrodeThe electrode used in (SMAW) process exist from metal rod coated in metal mixture called menstruate which gives off gases as it decomposes to prevent weld contamination , introduces deoxidizer to purify the weld , causes weld- protection slag and provides alloying elements to improve the weld feeling. there are ternion types from the electrode used in (SMAW) process which discussed below.Fast fill electrode this type from electrode designed to melt quickly so that the welding speed be maximized. This type used when we weld in the normal case in good welding so we can weld with broad(prenominal) speed so we use this electrode type.Fast freeze electrode this type from electrode designed to solidify quickly making welding in a mannequin of positions possible by preventing the weld pool from shifting.Intermediates electrodes the commonly used type and it intermediate in cardinal case melting and in freezing but if we weld with high speed with using this type we get poor quality so that this type is not suitable in case of high speed.The American welding society established system that used to point electrodes by using four or five digital number. cover electrodes made of mild vane or low alloy steel carry the symbol of (E) followed by their number. the first two . The first two or tierce digits of the number specify the tensile skill of the weld metal, in thousand pounds per square inch . The penultimate digit primarily identifies the welding positions permissible with the electrode, typically using the values 1 (normally fast-freeze electrodes, implying all position welding) and 2 (normally fast-fill electrodes, implying horizontal welding only). The welding current and type of electrode covering are specified by the last two digits together. compositors case for electrode serial numberE7018E indicates electrode70 indicates 70,000 psi tensile strength1 indicates use for welding in all positions8 indicates low hydrogen2. Cables there are two cables work cable which committed the base metal and the electrode cable which connected to the electrode one of them represent validating and the other represent the negative side this according to the mansion of the welding processWelding Trouble ShootingThis section discuss to the move shooting may faced it during the welding speed as1-Porosity sensitive cavities or holes resulting from gas pockets in weld metal.www.miller.com.pdfThe porosity in welding it may be caused by the smirchy on work piece and the corrective action to face it by Remove all grease, oil, moisture, rust, paint, coatings, slag, and dirt from work surface sooner welding.Excessive Spatter scattering of melt metal particles that cool to solid form near weld beadwork as sho wn in the below figure.www.miller.com.pdfThe main causes to excessive spatter is the current too high for electrode and it avoid by decrease current or select larger electrode.3- Distortion contraction of weld metal during welding that forces base metal to move.www.miller.com.pdfDistortion in the welding appear as result to excessive heat input. And there is many ways to reckon this problem asUse restraint (clamp) to hold base metal in positionMake tack welds along joint before starting welding unconscious process.Select lower amperage for electrode. emergence travel speedLack of Penetration shallow fusion between weld metal and base metal.www.miller.com.pdfThe lack of penetration appears as result for many causes as showing belowPossible causesCorrective actionImproper joint preparationMaterial too thick. Joint preparation and design must provide access to bottom of groove.Improper weld technique.1-Keep arc on leading edge of weld puddle.2-Reduce travel speed.Insufficient heat i nput.Increase amperage. Select larger electrode and increase amperageAdvantages Of Shield Metal Arc WeldingThe shield arc welding have main further that represent the advantages as belowStrong and tight joining rather than the other methodsCost effectiveness (have low capital and running cost)The arc welding Simplicity of welded structures designMay be mechanized and automated or manual in some dutyDisadvantages Of Arc WeldingThe using of the shield metal arc welding lead to some defects asInternal stresses, distortion and change for the microstructure in the weld region contract harmful effects as radiation and fumesApplication Of The Shield Arc WeldingThe arc welding it can be used in many applications asBuildings and bridges structuresAutomotive, ship and aircraft constructionsPipe linesTanks and vessels (2.2) signTo introduce what the signaling means and the different type of the polarity, first of all the project will show what is the difference between AC and DC?AC And DC Cur rentWhat Is The AC Current?It means alter current. In this current the electric charge flow periodically policy changes watchfulness. The electric charge in this case will move for instance retrospective then it will reverse the direction again to move forward, then backward then forward over and over again.The waveform for alter current is a sine wave. But sometimes in certain(prenominal) applications the waveform differs like square wave or triangular wave.Dc CurrentWhat Is The DC Current?It means direct current because the electric charge in direct current moves in a constant direction, and that is the difference between DC and AC. The DC could be produced by such sources like thermocouples, batteries and solar cells.We can use a rectifier which is a current-switching brass to obtain direct current from an alternating current. The concept of rectifier is containing electromechanical elements or electronic elements which allow current to flow only in one direction.AC And DC Welding MachinesThe welder or welding machine is the power source that we used in arc welding. There are three basic types of weldingmachines used now which are rectifiers, motor- generators and transformersMotor generator welding machines (direct current welding machines)The motor generator could be powered by diesel motor, electrical or gasoline motor. We can use the gasoline and diesel motors in places where the electricity is not available or hard to penetrate it like deserts. With these machines we could generate either direct or alternating current. There are new and old machine types of these machines, the older type require reversing the cable connections in order to change the polarity. But in the new machines you can change the polarity from welding in the direct current mode to alternating current mode by turning a switch.Theadvantages of a (dc) welding generatorThe main advantage of a direct-current (dc) welding generator is that you can weld with either reverse or immediately polarity.Almost we can weld all ferrous and non-ferrous metals.We can use DC in practically all welding operations so we can consider that DC is most universal in application.The sidetrack of generators like rectifier and transformer a sets is not affected by normal variations in power line voltage.Diesel driven generators form self-contained units.Disadvantages of a (dc) welding generatorThe initial cost is highThe machine operation is noisyThe maintenance cost is highAC transformers welding machinesThe static-transformer type is the arc welding machines that we used in alternating current. As shown in the figure 2.18The advantages of these types ofmachines are lightest, smallest and least expensive welders made. We can use 200, 300, and cd ampere ratings for manual operation in industrialapplications. But in light industrial, job/shop and garage welding we could use machines with a 150-ampere rating. These types of transforms fit with arc- stabilizing capacitors.Th e advantage of a (AC) transformer welding machineThe main advantage of (AC) transformer welding machine is the freedom from arc blow. The arc blow causes the arc to wander while you are using large coated electrodes or welding in corners on heavy metal. The arc blow a lot occurs when welding with direct current machines.PolarityWhat is the polarity?Polarity is the direction of the current flow in a circuit. There are two types of polarity reverse polarity and straight polarity. In the straight polarity the work piece is positive and the electrode is negative. The electrons move from the electrode to the work piece. In the reverse polarity the work- piece negative and the electrode is positive. The electrons move from the work piece to the electrode ac and dc current was briefly covered.The effect of polarityThe polarity affects the amount of heat which is going to the base metal. You can direct the amount of heat to where it is needed as per the application you working in by chang ing the polarity. If you postulate to direct the majority of heat toward the work piece, you must use straight polarity. That type of polarity being used in some welding situations when it is desirable to have more heat on the work piece because of its size to melt the base metal than the electrode. We can use straight polarity for all mild-steel, bare, or lightly coated electrodes. If you want to concentrate the heat on the electrode, you can use reverse polarity because in this type less heat is concentrated at the work piece which allow filler metal to cool faster, giving it great holding power because of this reverse polarity is being used when you are making vertical and overhead welds. Reverse polarity could be used in the welding of nonferrous metals such as bronze, aluminum and nickel.Heat alter ZoneHeat affected regularize definition.The heat affected zone (HAZ) represented by the area of base material subjected to the high heat in order to achieve the welding process. The area which subjected to change in its microstructure and mechanical properties. SMAW process give a highly heat engrossment in specified region called (fusion zone), produced in the region of heat affected zone. To calculated the amount of heat in the HAZ the following formula used.Q =60 VI / 1000SWhere Q = heat input (kj/mm), V = voltage (V), I = current (A), and S= welding speed (mm/ min). (2.10)The molten occur in the fusion region not in the heat affected zone. So that the HAZ modify to a high enough temperature for sufficient period that grain produce occurred. Heat affected zone is that location of the base metal which in it the mechanical properties and the microstructure have been affected by the heat of welding process.The heat affected zone is subjected to a complex thermal cycle (sudden alter followed by rapid cooling) in which all temperatures from the melting range of the metal down to much lower temperatures are involved and HAZ therefore consists of a series o f graded structures ringing the weld bead. HAZ usually contains a variety of microstructures different from the remaining part from the base metal.The width of HAZ varies according to the welding process and technique in arc welds it extends only a a couple of(prenominal) mm from the fusion boundary,The HAZ in most metal welding process of normal structure welded in one run with coated electrodes that to carve up it to four basic region.Classification And DesignationThe classification of electrodes is done by one of the three following categories1 Strength of the deposited weld metal2 Current (ac or dc)3 Types of coatingThe identification of electrodes is by numbers and letters as shown in the next table. Typical coated electrode dimensions are in the range of 150 to 460 mm (6 to 18 in.) in length, and 1.5 to 8 mm (1/16 to 5/16) in diameter.Specifications for electrodes and filler metals (including dimensional tolerances, quality control procedures, and processes) are publishe d by the American welding society (AWS) and the American national standards institute (ANSI). Some specifications appear in the aerospace materials specifications (AMS) by the society of automotive engineers (SAE). Electrodes are sold by cant over and are available in a wide variety of sizes and specifications.Electrodes Types And ChoicesWhen the select of a suitable electrode is needed, many considerations are taken such asQuality of weldPenetrationUsed current whether AC or DCCrack resistant

Effect of Media Bias in Arab World on Palestinian Community

gist of Media stroke in Arab World on Palestinian CommunityResearch deviceGhaida AyeshProposed Research TopicThe Effect of Biased Media in the Arab World on the Palestinian Community.Research QuestionWhy Palestinians believe media even though there ar different cites with different opinions on the same paper?Introduction and PurposesIn September of 2013, there were billboards around Bethlehem city attracted my help saying Did you know a 3rd tower cancel on 9/11? and this sentence followed by a website to be check if someone interested of becharmting more(prenominal) than details, it was www.re believe911.org, I checked the website. It was altogether closely introducing facts rough what happened in the 11th September, 2001. And there was a documentary film video which presented by a conference of Arc tote upects Engineers who try to unveil the truth behind the fell of the World Trade Center Twin Towers on that twenty-four hour period, and the surprising social funct ion that there was a triad building fell on that day c all in alled the World Trade Center Building 7 that didnt hit by design and collapsed in free fall 7 hours afterward the twin towers collapsed, I didnt remember that on that day I heard ab place the existence of a third building and no news mentioned a story ab pop the third building. I wondered how could media hide verboten such(prenominal) a thing, wherefore did they do that especially the U.S media, who could control all the chief(prenominal) media networks around the word for not give notice (of)ing active the third tower, and why did the hearing believe them? patch reading several articles somewhat the issue trying to explore some facts, I realised that media reporting followed accusations by g all overnment authorities that pointed toward Al Qaeda as the host that carried out the attack on the United States and Osama bin Laden as leader of that sort out. Those news reports on the attack and the aftermath sha ped ordinaryopinion to support the war on terrorism.Other ways to influence unrestricted opinion include political advertising.Subsequently I realised that media plays the social occasion of the ultraviolet hand in this universe and controls the audiences minds in a strange way, so what exercises medias audiences believe what they hear or chink? Therefore, I plan to consider a research about the media reach in the Arab world, and my occasion of this research is to see how the news reporting nowadays by match concourses opinion toward whats going away on in the Arab world. And how the twisted media can control communitys political intellection? It ordain to a fault aim to tackle issues such as is media report or create news? Moreover who atomic number 18 the parties that control media in the Arab world?Background and MethodsIn order to get data for my research, start I testament read articles and researched conducted to a related topics, and will conduct a survey th at target under graduate university students in Bethlehem University, in addition a group of people who used to set in Cafs and surveil, read and listen to news, so this will enable me to gather pertinent information, ultimately giving me the necessary tools to be able to compare peoples perspectives about todays media, besides what is their relevance source of media, how their believe in media changed in the last years? Also to see if they make sure about the news they read before sharing it with new(prenominal)(a) people in social networks. Further, I will civilise for a focus group of university students with different political ciphers about whats going on in the Middle East, and during this focus group I will introduce different resources of media with different opinion specifically about the Syrian revolution because I have noticed that there are many conflicted opinions in the Palestinian community about it and cannot find group of people have the same political analy sis about whats going on there in Syria, and during the discussions that will arise I will observe how this group of people going to react and mark about the differences in media and opinions.I recognize surveys because using this tool will make me able to collect different opinions about media, and the creating of focus group is efficient to see immediate reaction and different opinions about media and this will give me information about what is the source of news that people pick out and trust, and how people evaluate the reliability of the reported news?I think about targeting university students and people who usually set in cafs to watch news when distributing the surveys and creating the focus group because these types of groups gathers people with different values and believes in one spot. And this will make the data I gather more efficient.Literature ReviewWatching news, reading newspaper or magazine, or listening to a radio station are one of the briny activities in ever y days life. And these media become part of culture. While reading about the media effect and impact on peoples opinion and beliefs I found that there are three main sociological perspectives on the role of media, the first called the Limited-effects opening (1940s-1950s) this theory supports the assurance that people has the control of their own excerptions and choose what to watch, what believe and what to not so the studies of the media influence showed that well- informed people relied more on personal experience, prior knowledge and their own reasoning unlike those who are less(prenominal)- informed ones. that for me there is a missing point in this theory that makes me discord with it, the point is that when someone wants to get some knowledge about something he looks for information through media, if not through media, he will subscribe other people for information and for sure these people didnt get this knowledge from nothing, they got it for example, from books, m agazines, TV or internet which all considered as media. And some other important thing is that this theory was created when the existence, availability and dominance of media was far less widespread which make it out dated (Entman 1994). The second theory is Class-dominant theory this theory follow the postulation that media is owned by a veniality elect who controls it, and this elite group is cooperating with each other as a result, they can control what people see or hear, in asset because the main source of income for media is advertising, when a big guild that finance massive advertising campaigns in media do something unethical this media protect the image of this company because it is not for her benefit to harm the image of the company because this will make the media lose a big source of income (Mills 1956). The third and final theory called Culturalist theory (1980s-1990s), this theory combined the other two theories and it believes that people move with media in a way so they create their own meanings out of the images and messages received form media, moreover this theory has two standpoints, the first is how audiences interact with media, and the other standpoint focuses on the producers of media. For the first standpoint because people choose what to watch, how much to watch and may choose to not watch studies make by sociologists and linguists found that audiences interpretation of what they choose to watch is based on their own knowledge and experience. Therefore, culturalist theorists claim that, while a few elite in large corporations may exert hearty control over what information media produces and distributes, personal perspective plays a more powerful role in how the audience members interpret those messages. (The Role and captivate of potful Media 2013). some(prenominal) reports and studies showed that the media can influence the audiences political view, and voting decision, for instance a occupy conducted in one of NBER wor king paper series, the study took the introduction of pull a fast one on newsworthiness into a cable market as a baptismal font to analyze its news reporting impact on the federal election, they placid data for 28 states in the United States of America. After that they compared the change in the Re existencean suffrage partake in between 1996 and 2000 for the towns that had adopted give News by 2000 with those that had not. And the result showed that cast off News had a significant impact on the 2000 elections. The entry of Fox News increased the Republican vote share in presidential elections by 0.4 to 0.7 shareage points, depending on the specification. Since Fox News in 2000 was available in about 35 percent of households, the impact of Fox News on the two-party vote share in 2000 is estimated to be 0.15 to 0.2 percentage points, 200,000 votes nation-wide. (DellaVigna and Kaplan 2006). Another study find that Fox News watchers were 50 percent more likely that viewers of o ther networks to believe (erroneously) that weapons of mass destruction were found in Iraq. (Steven, Ramsay and Lewis 2003). These statistics raised in my mind why did people believe median in such a topic? Is it because it represents their inner affiliation? Or because the way it is presented is climax straight to the point that interest them? Or is it all about the believability that a channel may be having? These are another minor questions of what I am looking for, and may lead me to study the case through some focus groups with different affiliation.In addition other studies found that over 70 percent of Americans believe that there is a great deal or a fair amount of media bias in news coverage (Pew 2004). Evidence of bias ranges from the topic choice of the New York Times (Puglisi 2006) to the choice of think-tanks that the media refer to (Groseclose and Milyo 2005). Media bias was even more prevalent in the late 19th and early 20th degree centigrade (Gentzkow 2006).There i s another theory addressed by Dr. Max McCombs and Dr. Donald Shaw, which is Agenda- scenery Theory it describes the powerful influence of media by telling what issues are important, they came out with this theory by studying the influence of media on the 1968 presidential election, the study titled 1968 Chapel HillStudy, the conclusion of this study is that the mass media exerted a significant influence on what voters considered to be the major issues of the campaign. (McCombs and Shaw 1972).Biased Media The media is biased whenever it provides finagle images or out of context facts to support a certain viewpoint. The media is also biased whenever it framing issues of eventer on a certain way to shammer the facts. Many scholars argue that framing can actually decide how we view a situation. (Kuypers 2002). A biased media affects the publics understanding of current events and issues without giving the public all the facts. Opinions based on biased information are not usually the same as opinions based on neutral information. So for the public to make informed decisions on issues and politics, they must be given neutral information. (Kelly and Pax 2004)As shown, media has powerful impact on peoples beliefs, and is controlled by group of people, furthermore there is agreement about the existence of biased media, and most of studies are conducted in western areas. That is why the current research study will be aimed to find out why people in the Arab world, from Palestine, in Bethlehem believe what media reports.Limitationregrettably I will not be able to collect audiences interaction with the reported news about whats going on in the Arab world specially about what so called the Arabs Spring because I have no access to audiences from other countries. In addition I cant get statistics about what are the news media people in the Arab world watch, read or listen. As a result I am limited to Bethlehem University undergraduate students only. Because of that, I wi ll be restricted to only normal audiences in the Palestinian community. In addition, there is no available technology for media that give statistics about what people watch on TV. And what are the main news TV channels they watch such as Nielsen technology.BibliographyDellaVigna, Stefano, and Ethan Kaplan. 2006. The FOX News Effect Media Bias and Voting. NBER Working Paper, Cambridge, MA NATIONAL BUREAU OF ECONOMIC RESEARCH.Entman, Robert M. 1994. Reopening the baleful Box Toward a Limited Effects Theory. Political Communication 11 (3) 313 314.Gentzkow, Matthew. 2006. Television and Voter Turnout. The Quarterly Journal of Economics 931-972.Groseclose, Tim, and Jeffrey Milyo. 2005. A sum of Media Bias. The Quarterly Journal of Economics 1191-1237.Kelly, and Pax. 2004. Think on Journalism. July 1. Accessed January 27, 2014. http//www.jour.unr.edu/think/bias.html.Kuypers, Jim A. 2002. atmospheric pressure Bias and Politics How the Media Frame Conoversial Issues. London Praeger.McCo mbs, Maxwell E., and Donald L. Shaw. 1972. The Agenda-Setting Function of Mass Media. The Public Opinion Quarterly (American Association for Public Opinion Research) 36 (2) 176-187. http//www.jstor.org/stable/2747787.Mills, C. Wright. 1956. The Power Elite. Oxford Oxford University Press.2004. NEWS AUDIENCES INCREASINGLY POLITICIZED. Study, Washington, D.C. PEW RESEARCH condense FOR THE PEOPLE AND THE PRESS.Puglisi, Riccardo. 2006. BEING THE NEW YORK TIMES THE POLITICAL BEHAVIOUR OF A NEWSPAPER. http//eprints.lse.ac.uk/. April. Accessed January 26, 2014. http//eprints.lse.ac.uk/19292/1/Being_the_new_york_times.pdf.Steven, Kull, Clay Ramsay, and Evan Lewis. 2003. Misperceptions, The Media, And The Iraq. Political Science Quarterly 118 569-598.2013. The Role and Influence of Mass Media. CliffNotes. May 7. Accessed January 27, 2014. http//www.cliffsnotes.com/sciences/sociology/contemporary-mass-media/the-role-and-influence-of-mass-media.