An Introduction to the Jack the Ripper Mystery

An Introduction to the Jack the Ripper Mystery Someone in London murdered and mutilated a number of prostitutes during the autumn of 1888; the press went into a frenzy, politicians pointed the finger at each other, hoaxers polluted the investigation, and one of several nicknames stuck: Jack the Ripper. Over a century later, Jacks identity has never been wholly proven (there isnt even a leading suspect), most aspects of the case are still debated, and the Ripper is an infamous cultural bogeyman. The Enduring Mystery The Rippers identity has never been established and people have never stopped looking: the publishing rates average is a new book a year since 1888 (although most of these have come in recent decades). Unfortunately, the wealth of Ripper source material - letters, reports, diaries,  and photographs - provides enough depth for detailed and fascinating research, but too few facts for any incontrovertible conclusions. Just about everything about Jack the Ripper is open to debate and the best you can get is a consensus. People are still finding new suspects  or new ways to reframe old suspects, and books are still flying off the shelves. There is no better mystery. The Crimes Traditionally, Jack the Ripper is considered to have killed five women, all London prostitutes, during 1888: Mary Ann Polly Nichols on August 31, Annie Chapman on September 8, Elizabeth Stride and Catherine Eddowes on September 30 and Mary Jane (Marie Jeanette) Kelly on November 9. In practice, there is no agreed list: the most popular change is to discount Stride and/or Kelly, sometimes adding Martha Tabram, killed August 7th. Authors naming more than eight have achieved very little consensus. At the time Polly Nichols was sometimes considered the second or third person to have been killed by the same person, and plenty of later investigators have searched the world in search of similar killings to see if the Ripper moved on. The Ripper generally killed by strangling his victims, then laying them down and cutting the arteries in their throats; this was followed by a varied process of mutilation, during which parts of the body were removed and kept. Because Jack did this quickly, often in the dark, and because he seemed to have great anatomical knowledge, people have assumed the Ripper had a doctors or surgeons training. As with much of the case, there is no consensus - a contemporary thought him simply a blunderer. There have been accusations that the missing organs werent stolen from the bodies by the Ripper, but by people dealing with them later. Evidence for this is scant. The Letters and Nicknames During the autumn and winter of 1888/89, a number of letters circulated among the police and newspapers, all claiming to be from the Whitechapel murderer; these include the From Hell letter and one accompanied by part of a kidney (which may have matched a kidney taken from one of the victims, but like everything Jack, were not a hundred percent sure). Ripperologists consider most, if not all, of the letters to be hoaxes, but their impact at the time was considerable, if only because one contained the first use of Jack the Ripper, a nickname the papers swiftly adopted and which is now synonymous. Horror, Media, and Culture The Ripper killings were neither obscure nor ignored at the time. There was gossip and fear in the streets, questions at high levels of government,  and offers of rewards and resignations when nobody was caught. Political reformers used the Ripper in arguments and policemen struggled with the limited techniques of the time. Indeed, the Ripper case remained high profile enough for many of the police involved to write private accounts years later. However, it was the media who made Jack the Ripper. By 1888, literacy was common amongst the crowded citizens of London and newspapers reacted to the Whitechapel Murderer, whom they initially christened Leather Apron, with the frenzy we expect from modern tabloids, stirring opinions, fact,  and theory – along with the probably hoaxed Ripper letters – together to create a legend which seeped into popular culture. From the very start, Jack doubled as a figure from the horror genre, a bogeyman to scare your kids. A century later, Jack the Ripper is still hugely famous world over, an unknown criminal at the center of a global manhunt. But he is more than that, hes the focus of novels, films, musicals,  and even a six-inch high model plastic figure. Jack the Ripper was the first serial killer adopted by the modern media age and hes been at the forefront ever since, mirroring the evolution of western culture. Will the Mystery Be Solved? Its extremely unlikely anyone will be able to use the existing evidence to prove, beyond all reasonable doubt, who Jack the Ripper was and, while people are still uncovering material, the discovery of something unarguable has to be regarded as a long-shot. Fortunately, the mystery is so fascinating because you can do your own reading, draw your own conclusions and, with some critical thinking, generally have as much chance of being right as everyone else! Suspects range from people the detectives at the time suspected (such as George Chapman / Klosowski), to a whole gallery of strange suggestions, which include no less than Lewis Carroll, a royal doctor, Inspector Abberline himself, and someone who even blamed their relative decades later after finding some tenuous items.

The Tropical Rainforest Biome

The Tropical Rainforest Biome All tropical rainforests have similar characteristics including climate, precipitation, canopy structure, complex symbiotic relationships and an amazing diversity of species. However, not every tropical rainforest can claim exact characteristics when compared by  region or realm  and there are rarely clear defining boundaries. Many may blend with adjoining mangrove forests, moist forests, mountain forests, or tropical deciduous forests. Tropical Rainforest Location Tropical rainforests mainly occur inside the worlds equatorial regions. Tropical rainforests are restricted to the small land area between the latitudes 22.5 ° North and 22.5 ° South of the equator - between the Tropic of Capricorn and the Tropic of Cancer. The global distribution of the tropical rainforest can be broken into four continental regions, realms or biomes: the Ethiopian or Afrotropical rainforest, the  Australasian  or Australian rainforest, the Oriental or Indomalayan/Asian rainforest, and the Central and South American Neotropical. Importance of the Tropical Rainforest Rainforests are cradles of diversity. They spawn and support 50 percent of all living organisms on Earth even though they cover less than 5% of Earths surface. A rainforests importance is truly incomprehensible when it comes to species diversity. Losing the Tropical Rainforest Just a few thousand years ago, tropical rainforests are estimated to have covered as much as 12% of the land surface on earth. This was about 6 million square miles (15.5 million square km). Today it is estimated that less than 5% of Earths land is covered with these forests (about 2 to 3 million square miles). More importantly, two-thirds of the worlds tropical rainforests exist as fragmented remnants. The Largest Tropical Rainforest The largest unbroken stretch of rainforest is found in the Amazon river basin of South America. Over half of this forest lies in Brazil, which holds about one-third of the worlds remaining tropical rainforests. Another 20% of the worlds remaining rainforest exists in Indonesia and the Congo Basin, while the balance of the worlds rainforests is scattered around the globe in tropical regions. Tropical Rainforests Outside the Tropics Tropical rainforests are not just found in tropical regions, but also in temperate regions like Canada, the United States, and the former Soviet Union. These forests, like any tropical rainforest, receive abundant, year-round rainfall, and are characterized by an enclosed canopy and high species diversity but are without the year-round warmth and sunlight. Precipitation An important characteristic of tropical rainforests is moisture. Tropical rainforests usually lie in tropical zones where solar energy produces frequent rainstorms. Rainforests are subject to heavy rainfall, at least 80 and in some areas over 430 of rain each year. High volumes of rain in rainforests can cause local streams and creeks to rise 10-20 feet over the course of two hours. The Canopy Layer Most of life in the tropical rainforest exists vertically in the trees, above the shaded forest floor - in the layers. Each tropical rainforest canopy layer harbors its own unique plant and animal species interacting with the ecosystem around them. The primary tropical rainforest is divided into at least five layers: the overstory, the true canopy, the understory, the shrub layer, and the forest floor. Protection Tropical rainforests are not all that pleasant to visit. They are hot and humid, difficult to reach, insect-infested, and have wildlife that is hard to find. Still, according to Rhett A. Butler in A Place Out of Time: Tropical Rainforests and the Perils They Face, there are undeniable reasons to protect the rainforests: Loss of local climate regulation - With forest loss, the local community loses the system that performed valuable but unnoticed services like ensuring the regular flow of clean water and protecting the community from flood and drought. The forest acts as a sort of sponge, soaking up the tremendous amounts of rainfall brought by tropical downpours, and releasing water at regular intervals. This regulating feature of tropical rainforests prevents destructive flood and drought cycles.Erosion and its effects - The loss of trees, which anchor the soil with their roots, causes widespread erosion throughout the tropics. Only a minority of areas have good soils, which after clearing are quickly washed away by the heavy rains. Thus crops yields decline and the people must spend income to import foreign fertilizers or clear additional forest.Loss of species for forest regeneration - A fully functioning forest has a great capacity to regenerate. Exhaustive hunting of tropical rainforest species can reduce those species necessary to forest continuance and regeneration. The increase of tropical diseases - The emergence of tropical diseases and outbreaks of new diseases including nasty hemorrhagic fevers like Ebola and Lassa Fever is a subtle but serious impact of deforestation.Destruction of renewable resources - Deforestation can rob a country of potential renewable revenues while replacing valuable productive lands with virtually useless scrub and grassland (desertification).

Emigration Essay Example | Topics and Well Written Essays - 750 words - 1

Emigration - Essay Example In 2011 alone, the United States, which has the largest number of immigrants in the world, received 87,000 permanent residents from China (â€Å"Wary Future, Professionals Leave China†). Consequently, the increasing number of immigrants has resulted to a number of research studies to understand this phenomenon. One effective way to understand the concept of emigration in the present time is to examine its causes. People emigrate for various reasons, but the most common causes are education, employment, freedom, and war. These causes are the prime motivation for people around the world to emigrate to other countries. Education, which is a product of globalization, is one of the leading causes of emigration. Globalization has pushed immigrant children to move to the first world countries like the United States to obtain their education. People seek for a better quality of education for them to be globally competitive and hirable in their own chosen fields. Education in the form of research and development is another result of globalization. Academicians accomplish their research studies in other countries where they are able to utilize more advanced facilities and technological equipments to get better results. Scholarships also largely contribute to the number of immigrants in the academe. It enables immigrants to avail low cost and yet high quality education through scholarships. Employment is another leading reason for emigration as people in poor countries work overseas. As developed countries have good economic conditions, industries in these countries offer much higher salaries than poor countries do. In addition, the worker’s rights and benefits are top priorities for these countries as developed countries have more stable policies that protect employees’ welfare. Lastly, these countries have high employment rate that means that they offer many job opportunities. Other people emigrate to find more freedom in the things that

Professional Resume and Cover Letter Essay Example | Topics and Well Written Essays - 500 words

Professional Resume and Cover Letter - Essay Example CH2M HLL is a global leader in consulting, design, design-build, operations, and program management where success of turnkey projects is critical part of organizational success. My skills and professional expertise in office management can be judiciously exploited to accelerate the progress of ongoing projects. I strongly believe that role of leaders, managers and the administrators of the organizations have increasingly become more challenging especially when new strategy and policy decisions are introduced in the organizations. As such, I have often undertaken leadership role to ensure effective feedback through participatory approach and helped solve the problems and workplace conflicts. My professional competencies, experience and my desire to acquire more knowledge would help me to become top performer in your company also. My work experience has involved extensive interaction with major clients and public, thereby equipping me with necessary traits of effective verbal communication techniques. I have attaches resume for your kind perusal. My key strength have been my ability to function under limited direction and worked independently using initiative and good judgment. I can assure you that my personal and professional competencies would add value to your organization. I would appreciate an opportunity to discuss the same with you in person and look forward to meeting you. Strong leadership initiatives in performing liaison work for CEO and proven record for excellent office management. Talent for organizing meetings and ensuring effective coordination with different stakeholders for resolving conflicts and promote communication. Highly efficient in managing confidential information and drafting agendas for important meeting and ensuring smooth conduct of the same. Exceptional organizational skills; Leadership initiative in prioritizing

SWOT Analysis for Employability Skills

SWOT Analysis for Employability Skills Introduction With the rapid development of society, the competitions between companies are also increasing, what the employers want for the graduates are not only focus on the degree but pay more attention to their employability skills. In order to win their competitors in the fierce competition, employers want graduates who have a wide range of skills to bring to the work environment and need the employees with multi-skilled to fulfil many different roles. à ¯Ã‚ ¼Ã‹â€ Foster, 1998, p.4à ¯Ã‚ ¼Ã¢â‚¬ °. So graduates who coming into the workforce must have the skills needed by employers. With the purpose of making ourselves become more competitive in the future job market first we should find out what the employability skills the employer want for graduates, then according to the employability skills do the personal SWOT analysis and make an action plan to improve ourselves. Discussion of employability skills What skills do employers want Employability skills are defined as skills required not only to gain employment, but also to progress within an enterprise so as to achieve ones potential and contribute successfully to enterprise strategic directions. (DEST 2002a) Today, despite the degree, companies are paying more attention to the employability skills of the graduates, but there is no uniform standard of employability skills. What employability skills the graduates should have are depend on companys actual operating conditions and different companies have different standards. Through a wide range of literature research, the result of what the employability skills needed by companies are almost the same, and can be roughly divided into the following eight basic skills: Communication skills, Teamwork skills, Problem solving skills , Self management skills, Planning and organizing skills, Technology skills, Life-long learning skills and Initiative and enterprise skills. (MONASH, nd) Why do companies want these skills? Communication skills The CIPDs views are based on the latest CIPD/KPMG quarterly Labor Market Outlook, a survey of over 1,400 UK employers, the key attributes employers look for in school leaver recruits are communication skills (40% of employers rank this in their top three required attributes), work ethic (39%) and personality (32%). (CIPD,2006) .Communication happens all the time in the workplace, having effective communication skills can make us have a good relationship with colleagues and superiors ,thus can create a good working environment and help us complete the work more efficiently. Whats more , have good communication skills not only can make the existing customers become more satisfy with the products and services provided by our company but also can attract more clients cooperate with us . Teamwork skills In Todays society, only have the individual working ability is not enough, more and more works need a group of people to complete together .Work in groups can speed up the progress of work and also through brainstorming to create a better idea of the company Problem solving skills In this competitive world, companies will faced various problems at any time, solving the problem successfully enable the company ride out the storm or it will fail. Self-management skills Companies also need graduates have self-management skills to complete the work alone or almost alone, without the need for someone to stand over the employees constantly and tell them want to do.à ¯Ã‚ ¼Ã‹â€ Foster, 1998, p.14à ¯Ã‚ ¼Ã¢â‚¬ °. Planning and organizing skills Employers need graduates to make plans and organize the limited sources to achieve both short and long-term goals of company. Technology skills In the technological age, technology skills become increasingly important, company need employees use computers and telecommunications systems proficiency, understanding current trends and gathering information to predict the companys operating condition through technology. Life-long learning skills In order to make the company development sustainably, only require employee continuous learning can let the company keep pace with this rapid-developing society, and employees who have the life-long learning skills can also bring benefits to the company. Initiative and enterprise skills Employees recruited by the company are all with multi-skilled, the company may frequent transfer their employees to different departments and to take different roles within a company. (Heather and Peter, 2006, p.2) .So this require the employee have the initiative and enterprise skills to adjust themselves easily to new situations and can take the job quickly. Personal SWOT Analysis After identify the employability skills that needed by companies, I make a personal SWOT analysis based on actual experience and self assessment test through the internet. Strengths : I have good team work and organizing skills. According to the results of my self assessment test, I have a great mark in humanistic-encouraging and affiliative. (See Appendix 1) In the group work I can build on ideas with other members and as team leader I usually will make plans to allocate tasks to the group members to make sure everyone enjoys the tasks they are assigned to. I am good at Self management. I can management my time well and get thing done without being pushed. Usually I will write down the things what I need to do and sort them out according to the importance and the time sequence. After that I will write them to the calendar so that I can know clearly what and when should I do next I do well in learning. I willing to put in time and effort to learn new skills. As a student, beside the major I also join the free English class and the Assessment Centres mini module to improve myself. I have technology skills. I am not only having the basic computer skills but also can use specialised software packages. Since I have learned the business decision modelling in my first year and now I also learning the applied management and decision modelling, all of them need to use the specialised software packages so I learned how to use them in the course. Weaknesses I have no employment experience, even the part-time job experience. I am weak in problem solving; when I face problems usually I can not see all sides of them and can not provide good solution of them. My Communication skills are weak. I am an introvert (Result in appendix ) and I am not good at communicate with others .I feel shy when I talking to strangers. Opportunities I can find a part-time job through the future of our school to learn new skills to enhance my CV. I am more employable than others if I get work experience in UK. 65% of international employers indicate that they are more willing to employ graduates with overseas work experience. (Archer and Davison, 2008.). I have an opportunity to get a good job if I return to China after I graduate. China is widely expected to become the worlds largest human capital market in the future, requiring an explosive number of talented professionals. Companies seeking to hire Mainland Chinese returnees: born and raised in China, studied/worked in the U.S. or Europe and then returned to China. They offer international experience, plus language and cultural skills but are in short supply (Davy, Lau). I can enjoy a variety of preferential policies for overseas student which provided by the Chinese government if I back to China. Threats In recent years, explosive growth trends of Chinese overseas students choose to return home which will increase the competition of getting jobs in China. Employment pressure both in China and UK. Not only Chinese graduates for job-hunting with anxiety, graduates of British also face the same problem. The jobs shortage was blamed on a substantial backlog in the number of jobless graduates from previous years creating additional pressure on the employment market in 2010. (Articlesbase, 2010). Personal Action Plan After I finished the personal SWOT analysis, according to my own situation I make an action plan base on SMART Skill to be improved Specific Actions Measure Target date Communication skills: Participating in the activities that organized by school community orinvolvingin the school communitydirectly. Make a lot of friends. Take the initiative in making acquaintances. Do not feel nervous when talking to strangers Next month Take the mini module about communication that provided by the future in our school Presenting and participating in class discussions Semester 2 Through the IELTStestto improve my English speaking, writing, reading and listening skills. Take the IELTS test Christmas holidays Problem solving skills Apply for the volunteer opportunities provide by the futureHelping people solve problem while improving my problem solving skills. Become a volunteer Semester 2 Analysis the requirements of school assignments Meet the assignment requirements of teachers Deadline of assignments Initiative and enterprise skills Find part-time jobs in our school or become a volunteer Get part-time jobs, become a volunteer Semester 2 Become a trainee of a company for 1-2week Work in a company as a trainee Christmas holidays Teamwork skills Working on group assignments Do the Group work assignments Deadline of group assignments Planning and organisation skills Arranging study and daily lives at university Make plans everyday and do thing according to plans Everyday Self-management skills Summing upthe gaps in skills and knowledge Doself-reflection whenteachers give assignment feedback At the end of semester 1 Learning skills Learning new skills that needed by employers Attend courses and finish courses Semester 2 Technology skills Learn something about Photoshop or database. Participatethe relevant courses During semester 2 Conclusion There is no doubt that employees who having a good degree will gain an excellent starting point, since a good degree helps employees open the door of finding a job, however, a degree alone is not enough, employers want much more from their graduate employees, they want employees can bring benefits to the company and let the company in an invincible position during the fierce competition. Through extensive research I summed up eight kinds of employability skills that most needed by companies. And I made a personal SWOT analysis based on employability skills and self assessment test through the internet and actual experience which made me become more aware of myself. After that I made an action plan for myself. Ill stick to the plan and I hope that it would help me improve my employability skills after I finish it .And get a good job in the competitive job market after I graduate.

Improving The Design Of Buildings After 9 11 Environmental Sciences Essay

Following the terrorist onslaught on the New York World Trade Center in 2001, this paper seeks to look into the design features that would heighten the safety of tall edifices. Design/methodology/approach – Using a questionnaire, informations have been collected via electronic mails and by station from designers and civil applied scientists ( AEs ) in Singapore. Structured interviews were conducted with public governments. Findingss – The consequences show that AEs perceive tall edifices to be by and large safe in footings of structural design, fire safety characteristics and agencies of flight. The consequences besides show that AEs confirm the demand to better the safety of tall edifices further, are doing an attempt to turn to the heightened safety concern, will give full support to enterprises to turn to heightened safety concerns, will hold to carry on hazard appraisal during the design stage and will welcome a performance-based design codification. AEs do non hold that edifices should be designed to defy hydrocarbon fires or aircraft onslaughts. The study consequences further reveal that the four most effectual methods to better the safety of tall edifices are supplying issue marks with illuming at floor degrees, a separate design codification for super tall edifices, supplying fire safety and deliverance floors, and the decentalisation of fire systems. Originality/value – The importance of this paper is that it investigates the safety characteristics and steps that can cast some visible radiation on heightening the safety of tall edifices. The findings may be used by constructing governments to explicate future steps and codifications to better heighten the safety of tall edifices. Based on the findings, farther research on each executable method of bettering the safety of tall edifices may be undertaken. The unprecedented devastation of the New York World Trade Center ( WTC ) by terrorists on September 11, 2001 ( 9/11 ) signified new menaces to tall icon edifices and has led to heightened concerns over the safety facets of tall edifices. Present safety characteristics in tall edifices might be unequal in get bying with such hazards, particularly when current edifice design and building have concentrated on the more normal types of accidents and catastrophes that can bechance constructions and their residents. There may be a demand to do edifices more robust and to guarantee better protection for a edifice ‘s residents. After 9/11, some issues need to be addressed. For illustration, is it necessary to guarantee that edifices are capable of defying the sort of impact suffered by the WTC? In reevaluating the hazards to the built environment, should edifices be designed to defy aircraft onslaughts, or simply to guarantee that there is sufficient clip for the residents to evacuate before the edifice prostrations? The aims of this survey are: to look into how safe tall edifices are/should be ; and to analyze the feasibleness of assorted methods to better the design of tall edifices to do them safer. The positions of designers and civil applied scientists ( AEs ) and relevant edifice governments in Singapore were obtained through a questionnaire study and interviews. Singapore is a relevant state for this survey to be conducted because it is a little city state, where land is scarce, and tower block, high-density life is the norm. Singapore besides likely has one of the highest concentrations of tall edifices per hectare of land in the universe. The importance of this paper is that it investigates the safety characteristics and steps that can cast some visible radiation on heightening the safety of tall edifices. The findings may be used by constructing governments to explicate future steps and codifications to better heighten the safety of tall edifices. Based on the findings, farther research on each executable method of bettering the safety of tall edifices may be undertaken. Proposed methods to better safety of tall edifices To measure the deductions of 9/11, the USA and the UK edifice governments and other related authorities bureaus have established groups and undertaking forces consisting edifice experts around the universe. These groups and undertaking forces seek to place life-safety issues and suggest new methods to better the public presentation of future tall edifices and guarantee sufficient emptying clip for edifice residents. In planing edifices against menace, Mr Robert Prieto, of Parsons Brinckerhoff, Inc. , highlighted the three Rs of menace design: â€Å" Design to defy the menace. Design to react to the menace. Design to retrieve from the menace † ( Post, 2001a ) . From a literature reappraisal, some of the methods that have been suggested by applied scientists and practicians in an attempt to better the safety public presentation of tall edifices are summarized in Table I. Column 2 of Table I shows that there are 23 possible ways to better the safety of tall edifices. These are categorized into five chief headers: structural design ; fire technology ; agencies of flight ; stuffs engineering ; and codifications and ordinances. How executable these methods will be is still unknown and remains to be determined. Therefore, this paper aims to happen out the suitableness of these methods by proving them in the field. Methodology The survey comprised a sample study and structured interviews to garner the positions of AEs and edifice governments, severally. The intent of the study was to happen out AEs ‘ perceptual experiences of the safety of tall edifices in Singapore and the feasibleness of steps that could be adopted to better the safety degrees of tall edifices. The intent of the interviews was to analyze the edifice governments ‘ attempts in turn toing the safety of tall edifices after 9/11. A questionnaire was designed for the study. The first subdivision of the questionnaire sought to find the profile and demographic inside informations of the respondents. In the 2nd subdivision, respondents were asked to rate the safety degree of tall edifices in Singapore ( V1 to V4 ) on a ten-point Likert graduated table, where 1 denotes â€Å" really insecure † , 5 denotes â€Å" satisfactory † and 10 denotes â€Å" really safe † . They were besides asked to rate the ability of these edifices to defy accidents and onslaughts ( V5 to V6 ) on a five-point Likert graduated table, where 1 denotes â€Å" strongly disagree † , 3 denotes â€Å" neither agree nor disagree † and 5 denotes â€Å" strongly agree † . The respondents ‘ positions on the heightened safety concern and the critical issues related to 9/11 ( V7 to V16 ) were besides obtained utilizing the same five-point Likert graduated table. The 3rd subdivision sought to find the fea sibleness and pertinence of the methods uncovered from the literature reappraisal. Respondents were asked to bespeak whether they thought the proposed method should be adopted, non adopted, or were diffident. They were besides encouraged to notice and give grounds for their responses. The complete mail study bundle comprised a screen missive, the questionnaire and a stamped, self-addressed and envelope. Data for the study were collected via electronic mail, surface mail and telephone. AEs were targeted for the study because the work that they do is straight relevant to constructing safety. Eighty and 160 questionnaires were sent to randomly selected AEs in the public and private sectors, severally. Public-sector AEs were identified through the Singapore Government ‘s published directory. Private-sector AEs were obtained from Internet Yellow Pages ( 2002a, B, degree Celsius ) . Besides the study, structured interviews were conducted with authorities functionaries from the Building and Construction Authority ( BCA ) and the Fire Safety and Shelter Bureau ( FSSB ) . The intent of the interviews was to happen out their attempts in turn toing the safety of tall edifices. The BCA was selected because it is the chief regulator of Singapore ‘s building industry ( Building and Construction Authority, 2002a, B ) . The FSSB is the local authorization in fire safety and bomb shelter ordinances ( Singapore Civil Defence Force, 2002 ) . E-mails explicating the intent of the research were sent to the governments to bespeak permission to carry on the interviews. Agreements for the interview Sessionss were so made with interviewees who were involved in the reappraisal of edifice safety after 9/11. Survey consequences and informations analysis Thirty-four questionnaires were received, giving an overall response rate of 14 per centum. The public sector response rate ( 28 per centum ) was higher than the private sector response rate ( 8 per centum ) . The good response rate from public-sector respondents may be because the several Human Resource Departments agreed to administer the questionnaires. The low response rate from the private sector respondents may be because these AEs felt that their chief duty is to follow the design codifications, and it is up to the authorities to alter the codifications. To increase the response rate, phone calls were made to the AEs to bespeak their engagement. Unfortunately, some of the mark respondents were normally busy or administrative staff were loath to set the calls through. The profile of the respondents is summarized in Table II. It can be seen that the bulk of the respondents held senior places in their organisations. The bulk of the respondents were applied scientists, and many of them were from the public-sector lodging authorization. Furthermore, the bulk of the respondents ( 79 per centum ) had worked in the building industry for more than five old ages. This would do their feedback more accurate and dependable. Almost all the respondents ( 88 per centum ) had been involved in the building of tall residential edifices. The public-sector respondents focused more on residential edifices, while the private-sector respondents were more involved in tall commercial edifices. We now describe the profile of the interviewees. The interviewee from the BCA was a senior director who had a civil technology grade. Prior to fall ining the BCA, he had worked in the building industry for 25 old ages and was involved in the building of major substructure and edifice undertakings. The FSSB interviewee held a sheepskin in stuffs and measures in add-on to his civil technology grade. He had worked in the FSSB for more than 15 old ages and was involved in reexamining the Fire Code. The positions of these capable affair experts ( SMExperts ) were incorporated in the relevant treatment subdivisions. Datas were entered into the Statistical Package for Social Sciences ( SPSS ) package for analysis. Average evaluations for all the variables were calculated ( Table III, column 3 ) . A one-sample t-test of the mean was carried out to look into whether the population would hold with the variables surveyed. For variables V1 to V4, the void hypothesis ( H 0 ) that tall edifices are regarded as insecure and the alternate hypothesis ( H 1 ) that tall edifices are regarded as safe are set out as: H 0. I?a†°Ã‚ ¤5. H 1. I? & gt ; 5. I? is the population mean, and is taken as 5 on a ten-point evaluation graduated table. For variables V5 to V16, the void hypothesis that respondents disagree with the variable and the alternate hypothesis that respondents agree with the variable are set out as: H 0. I?a†°Ã‚ ¤3. H 1. I? & gt ; 3. The degree of significance ( I ± ) was set at 0.05. If the deliberate p-value is greater than or equal to 0.05, H 0 is non rejected and the consequence is non important. If the p-value is less than 0.05, H 0 is rejected and the consequence is important beyond the 5 per centum degree. The consequences are shown in Table III ( columns 4 and 5 ) . An independent samples t-test was carried out to find whether the public and private sector respondents shared the same positions on the variables surveyed or otherwise. The degree of significance ( I ± ) was besides set at 0.05. The nothing and alternate hypotheses are: H 0. I? public=I? private. H 1. I? publica†° I? private. When H 0 is non rejected, it is concluded that there is no difference in the average evaluations by both sectors. The rejection of H 0 agencies that both sectors of the building industry have differing positions with regard to the variable being tested. Levene ‘s Test was used to look into for equality of discrepancies between the two groups of respondents ( Gray and Kinnear, 1997 ) . It was found that there was no important difference, and hence a pooled estimation of the population discrepancy was used. The consequences of the t-test of the difference between agencies are given in Table III ( columns 6-9 ) . The consequences show that there is no important difference between the positions of public and private sector respondents except for point V16. In point V16, both public and private sector professionals disagreed that tall edifices should be designed to defy aeroplane onslaughts, but private sector professionals disagreed to a greater extent. In the 3rd subdivision of the questionnaire, the respondents indicated whether a suggested step should be implemented ( agree ) , non implemented ( disagree ) or they are diffident about its pertinence in bettering the safety of tall edifices. The consequences are shown in Table I ( columns 4-7 ) . The four most popular methods are: supply issue marks with illuming at floor degrees ; supply a separate design codification for ace high-rise edifices ; supply fire safety and deliverance floors ; and supply a decentralized fire system. These consequences are now discussed. How safe tall edifices are/should be The one-sample t-test consequences ( Table III ) show that in general, the respondents are of the sentiment that tall edifices in Singapore are safe ( V1 ) . They besides have more than equal structural design ( V2 ) , fire safety ( V3 ) and means of flight ( V4 ) . Among the four safety appraisal of tall edifices, the average safety evaluation for structural design is highest at 7.88. Respondents felt that this facet of the edifice is the most earnestly considered in guaranting the safety of edifices. In add-on, tall edifices will be able to defy normal accidents ( V5 ) , but will fall in upon an aircraft onslaught ( V6 ) . The above consequences may be biased towards the sentiments and perceptual experiences of the respondents. This is because the population surveyed is likely to react that edifices are safe because they are involved in the design procedure, and stating that a edifice is insecure brings into inquiry their design patterns. In add-on, a big per centum of public functionaries responded to this study. These public functionaries can non be seen to hold no assurance in the safety of tall edifices when they have a responsibility of attention to normal citizens. Of the 10 steps proposed ( V7-V16 ) , six ( V7, V9, V10, V11, V13, V14 ) are significantly of import ( p & lt ; 0.05 ) . Respondents felt that there is a important demand to better the safety of tall edifices ( V7 ) . Consistent with this response, the respondents disagreed that tall edifices do non necessitate extra safety steps ( V12 ) . This shows that there is room for betterment and supports the demand to heighten edifice safety. Respondents felt that they have the expertness to better the safety of tall edifices ( V9 ) . The findings are promoting. It shows that AEs have the proficient capableness to do tall edifices even safer. The respondents besides agreed that they have made an attempt to turn to the heightened safety concern ( V10 ) . In add-on, they will give fullest support to the building industry to turn to the safety of edifices ( V11 ) . However, this issue is non their chief concern ( V8 ) , possibly because the tall edifices are already structurally safe ( V2 ) . Respondents agreed that there is a demand for hazard appraisals to be conducted on tall edifices during the design stage ( V13 ) . These hazard appraisals will help edifice interior decorators in placing the likely menaces faced by edifices ( Broughton, 2002 ; Linn, 2002 ) . Buildings are so designed to turn to the menaces to heighten their safety public presentation. Respondents besides agreed that a performance-based codification might supply better safety counsel than the normative codification for tall edifices ( V14 ) . The SMExperts revealed that the governments have already recognized the demand for a performance-based codification because it offers more flexibleness to interior decorators. For alone edifices such as airdromes and large-sized indoor bowls, interior decorators may non be able to use the conventional normative codifications straight. The findings show that respondents are opposed to planing edifices to defy hydrocarbon fires ( V15 ) and aircraft onslaughts ( V16 ) . This may be because it will be excessively expensive to construct such constructions, when the menace is improbable and unpredictable. SMExperts confirmed that edifices are designed based on possible burden events and believable jeopardies. Aircraft onslaught is non a sufficiently believable jeopardy to be considered in the design of edifices, and therefore edifice codifications do non necessitate that such events be considered for edifices in Singapore. The deduction is that edifices may non defy such utmost impact, particularly in the presence of the resulting fires because these constructions have non been designed for such menaces. SMExperts emphasized that it is more executable to concentrate on other signifiers of menaces such as truck and handheld bombs, which are physically transported by human existences. Resources should be directed towards air power and other security steps instead than to beef uping edifices against aircraft impact. Fire in edifices is a believable jeopardy which has been addressed in most edifice design. Harmonizing to the SMExperts, if edifices are improbable to see any menace posed by jet fuel, edifices need non be designed to defy hydrocarbon fires. How to plan safer tall edifices A ranking of the feasibleness of the proposed methods, based on the per centum of respondents who agreed with the method, is shown in Table I ( column 7 ) . For the intent of this survey, a proposed method is considered executable to do tall edifices safer when more than 50 per centum of the respondents agreed with it. Twelve methods are found to be executable and are discussed in the undermentioned subdivisions. Structural design Four possible methods to better the safety of tall edifices through structural design were proposed. One of these was found to be acceptable by more than 50 per centum of the respondents ( see Table I ) . The bulk of the respondents agreed with hardening of stairwells ( point 1.3 ) against blast impact. Strong stairwells are of import because flight stairwaies are the chief agencies by which edifice residents evacuate from edifices in an exigency. Existing codifications normally permit the usage of dryboards and masonry for stairwell enclosures, and these are susceptible and more prone to damage. This will do flight stairwaies to be blocked by fallen stuffs from stairwell walls. Reinforced concrete walls will hold higher opportunities of lasting a blast onslaught. It is recommended that codifications be changed to indurate stairwells. The bulk of the respondents did non hold with supplying prostration floors ( point 1.1 ) , which would be provided between, say every 10 floors, to transport the weight of the dust of the floors that prostration above it, and act as a arrest to progressive prostration ( Lane and Clark, 2001 ) . Some respondents felt that prostration floors impose significant structural demands ; for illustration, closely separated columns of larger sizes may be necessary. The bulk of the respondents did non hold with the proviso of a sacrificial facade ( item 1.2 ) . In this system, there is an exterior wall, a perpendicular air pocket behind it and another structural wall indoors. The exterior wall is designed to absorb blast impact and contain harm, and act as a first line of defense mechanism for the edifice ‘s structural unity ( Nadel, 2002 ) . Some respondents felt that this system may give architectural the look of edifices and blockade the positions of the residents. Furthermore, the facade may necessitate to be spaced far apart from the internal wall for effectivity, and this would take up valuable infinite. Respondents besides did non hold that heavy tonss should non be allowed on roofs ( point 1.4 ) . In the WTC towers, heavy tonss were placed on the roofs to stabilise the edifices ‘ wind-induced sway, but these could be a conducive factor to the prostration ( Building, 2001b ) . Some respondents felt that it is the norm to use rooftop infinite to house works and equipment such as lift motor suites and H2O armored combat vehicles, and interior decorators may confront the job of re-siting edifice services if rooftop infinite is non utilised. Furthermore, for practical grounds, some M & A ; E systems rely on gravitative force per unit area to work. Fire technology Four possible methods to better the safety of tall edifices through fire technology were proposed. Three of these were found to be acceptable by more than 50 per centum of the respondents ( see Table I ) . Astaneh-Asl ‘s ( 2002 ) probe of the WTC prostration revealed that the firefighting systems were centralized at the stairway nucleus. This bunching together of the services meant that when that location was hit, the whole firefighting system may hold failed. He hence recommended that sprinkler pipes, moisture and dry risers should be decentralized, and placed at different locations of the edifice. Respondents agreed with the method ( item 2.3 ) , but some cautioned that this would take to increase in cost. A sum of 61 per centum of the respondents agreed that supplying burden detectors ( point 2.4 ) is executable, and may increase the safety of tall edifices. Load detectors can be used to understand and supervise edifice behaviour. Prompt action could be taken and exigency forces alerted one time information is fed to the monitoring system. Furthermore, burden detectors, if decently developed, are utile tools in supplying warning signals to determine whether edifices are safe for entry during an exigency event. This would supply better protection to firemans and exigency forces, as they are able to measure the hazard of partial or entire prostration of a edifice under menace. A sum of 53 per centum of the respondents agreed that supplying a separate firemans ‘ stairway is executable ( item 2.1 ) . In the WTC incident, firemans running up the stairwells rushed headfirst into office workers who were hotfooting down on the same steps ( Post et al. , 2001 ) . Respondents who objected to a separate firemans ‘ stairway argued that the current fire codification already has a dedicated lift for usage by firemans. The infinite required for a firemans ‘ stairway might be indefensible as this reduces salable infinite and may imply excess building and care costs. One respondent questioned how edifice residents could be prevented from utilizing this stairway during an exigency. Respondents did non hold to planing redundancy in fire systems ( item 2.2 ) . This may be because excess standpipes for firefighting, separate fire pump suites, excess sprinkler systems, excess fire dismay systems, and double fire bid Centres will necessarily take to be addition. Some respondents weighed the pertinence of this method against cost effectivity, long-run care, cost and clip of installing and other options. Meanss of flight Nine possible methods to better the safety of tall edifices through agencies of flight were proposed. Six of these were accepted by more than 50 per centum of the respondents ( see Table I ) . A sum of 63 per centum of the respondents agreed that wider stairwaies might be necessary for tall edifices ( item 3.3 ) because these could suit more people to rush up emptying. Unfortunately, wider stairwaies would increase cost and cut down gross due to reduced salable floor infinite. There is besides debate sing cut downing the standard breadths of stairwaies because there is rarely a demand to evacuate the whole edifice at one clip, as normally merely occupants on stray floors in the affected country demand to be evacuated ( Post and Angelo, 2001 ) . Supplying issue marks with illuming at floor degree ( item 3.4 ) received the most support from the respondents. Well-marked and lit marks are cardinal constructing design characteristics that facilitated the emptying of many edifice residents at the WTC Towers ( Federal Emergency Management Agency/American Society of Civil Engineers, 2002 ) . Such a safety characteristic would hold the extra advantage of assisting residents in following flight paths if they have to creep on the floor. However, certain issues need to be addressed, such as the care of issue marks near floor degree, which are capable to more wear and tear and hooliganism. The construct of fire safety and deliverance floors is appealing to the respondents ( point 3.5 ) . Fireproof refuge countries can harbor people in the center of an emptying and service as deliverance points ( Post, 2001a ) . These countries should non incorporate furniture, and are designed to be wholly fireproof. Some respondents commented that proprietors may non hold to supply these countries as they can non bring forth gross but alternatively incur care costs. A sum of 58 per centum of the respondents agreed to the proviso of extra stairwaies in tall edifices ( item 3.6 ) . Similarly, some respondents are concerned about infinite and cost. Some suggested that the figure of stairwaies be increased merely at lower floors to provide to the big Numberss of falling residents from upper floors. This could forestall congestion and easiness emptying, peculiarly in exigency instances affecting mass emptying of residents. This suggestion is a good via media between cost and safety. Fifty-six per centum of the respondents perceived sky Bridgess to be executable in edifices ( item 3.8 ) . Besides being an alternate flight path, sky Bridgess could function as normal entree between edifices. Twenty-six per centum of the respondents did non favor sky Bridgess in position of the possibility that the construction of the sky Bridgess might be affected when a edifice was under menace. Besides, sky Bridgess could be a agency to let the spread of fire to the other edifice. A sky span that is overloaded with escapees may fall in, doing more human deaths. Some respondents, peculiarly designers, were concerned about the aesthetics of edifices. Seventy per centum of the respondents agreed that rooftop helipads could increase the safety of tall edifices ( item 3.9 ) because residents trapped in the upper floors of tall edifices can be rescued. However, there is a bound to the figure of residents that can be rescued utilizing choppers. This construct may besides be impractical because the human inclination is to fall instead than go up to upper floors during exigency events. Furthermore, deliverance by choppers requires particular deliverance squads and accomplishments, which might non be readily available. The bulk of the respondents did non hold that fireproof lifts ( point 3.1 ) would heighten the safety of tall edifices. The chief concerns are the supply of electricity to power lifts, the demand to protect against power failure during fire, and agencies of flight if lifts fail. Some respondents pointed out that big crowds waiting at lift anterooms may do pandemonium during emptying. However, some respondents suggested that lifts are utile to evacuate the disableds, the aged and kids. Mr Jeremy Hodge, of Building Research Establishment Ltd, believed that another reply to get awaying to safety is the installing of flight chutes, which would non take up much room but would enable people to skid to the bottom really rapidly ( Lane, 2001a ) . In this survey, half the respondents felt that flight chutes were executable ( item 3.2 ) . Respondents suggested that the stuff used for the flight chutes must be fire-retardant and lasting, particularly if the system is deployed out in the unfastened. Escape chutes functioning single floors might be more efficient, and the issue points of the chutes must be decently controlled. Of the respondents that did non hold to this method, some felt that this flight means is non suited for the aged and kids. Skiding down from great highs entails high kinetic energy, and people may be injured when residents collide into one another during the sliding procedure. The bulk of the respondents besides did non hold with inward emptying ( item 3.7 ) . The chief ground for the expostulation is that residents might be trapped in the edifice. Furthermore, the human inclination would be to fly an onslaught site and people would be unwilling to wait inside a damaged edifice to be saved ( Post, 2001a ) . This expostulation by Singapore respondents is surprising because Singapore already has in topographic point an inward emptying system, in the signifier of bomb shelters being built in each high-rise flat. Behaviour of stuffs under utmost temperature Three possible methods to better the safety of tall edifices through improved stuffs engineering were proposed. None of them were considered executable by the bulk of the respondents ( see Table I ) . Blast-resistant glazing may cut down casualties originating from winging glass in the event of a blast ( Madine et al. , 2001 ) but less than 50 per centum of the respondents agreed with utilizing it to better the safety of tall edifices ( item 4.1 ) . Some respondents questioned the extent of protection, particularly in the event of an aircraft or bomb onslaught. One school of idea is to beef up window systems by cramping their corners, so that glass is more hard to interrupt ( Madine et al. , 2001 ) . However, the respondents in the present survey did non hold with this ( item 4.2 ) . One respondent warned of the possibility of over design with immense connexion inside informations, when the beef uping consequence may be limited. Madine et Al. ( 2001 ) suggested adhering the glass into window frames for greater strength as the blast burden could be transferred to the construction of the edifice. Again, respondents were non agreeable to this ( item 4.3 ) . Some respondents considered blast-resistant glazing more effectual than adhering the glazing into window frames to control blast impact, as the strength of glass panel itself is more important. There might be troubles in building and assembly of such Windowss, in position of factors such as thermic consequence and enlargement articulations. Codes and ordinances Three possible methods to better the safety of tall edifices through amendments of codifications and ordinances were proposed. Two of these were accepted by more than 50 per centum of the respondents ( see Table I ) . Respondents did non hold to the infliction of a height bound on edifices ( item 5.2 ) . This is consistent with old surveies ( Angelo, 2001 ; Forgey, 2001 ; Galloway, 2001 ) . In land-scarce metropoliss, holding rigorous height bounds does non let the optimum usage of land. A height bound imposed on a edifice may forestall developers from maximising returns on investing. The bulk of the respondents agreed that codifications may necessitate to be revised to supply for longer flight clip ( item 5.1 ) . Some respondents said that when stipulating the flight clip several factors have to be considered, such as flight waies and obstructors, occupant features ( aged, kid, handicapped, etc. ) and the location of the last individual to get away from the edifice, whether this individual is on the highest floor or at the remotest location in the edifice. It was suggested that the flight clip, if implemented, should bind in with the fire structural demands of edifices. Seventy-nine per centum of the respondents agreed that a really tall edifice should hold a separate design codification ( item 5.3 ) . The chief ground is its possible as a mark for terrorists and a long emptying clip ( Post et al. , 2001 ) . Having a separate design codification may be a good via media between safety and cost, since the codification allows a high appraisal attack to constructing design. The SMExpert from the FSSB said that his organisation has programs to revise the Fire Code every five old ages. Code demands will be refined and amended to take likely terrorist menaces into consideration. Any lacks in edifice demands that may allow terrorist Acts of the Apostless will be identified, and betterments made. The FSSB will besides implement a codification of behavior for firemans in measuring the fortunes for them to come in a edifice under menace. In the USA, security-related codifications and criterions are besides being reviewed ( Ichniowski, 2001 ; Lane, 2001b ; Maas, 2001 ; Pearson, 2001b ) . Decision In the wake of 9/11, the issue of safety in tall edifices was brought into greater focal point. In measuring the safety of tall edifices originating from the 9/11 incident, this survey sought the positions of AEs and edifice governments in the building industry in Singapore. While the respondents in this survey in general perceived tall edifices in Singapore to be safe, there may be sample prejudice because the respondents were involved in the design of edifices and many are public functionaries. Notwithstanding this, with rigorous authorities ordinances, all edifice designs reference functionality, lastingness and fit-for-purpose affairs. The governments interviewed attributed the good safety records of edifices to strict conformity with edifice codifications and an efficient firefighting squad. Notwithstanding this, AEs felt that it is of import to farther better edifice safety ( V7 ) . This survey besides found that edifices in Singapore can defy normal edifice accidents, but are likely to fall in upon aircraft onslaught. This paper found that AEs ( see Table III ) : have the necessary expertness to better edifice safety ( V9 ) ; are doing an attempt to turn to heightened safety concerns ( V10 ) ; will give full support to enterprises to turn to heightened safety concerns ( V11 ) ; agree to carry on hazard appraisal during the design stage ( V13 ) ; and will welcome a performance-based design codification ( V14 ) . These findings indicate that the attack to constructing design may hold to alter after 9/11. While bing designs are equal, respondents besides felt that extra safety steps are necessary ( V12 ) . However, there is no demand to overreact to the point of guaranting that all edifices can defy hydrocarbon fires ( V15 ) and aircraft onslaughts ( V16 ) . The paper contributes to knowledge by bring outing that the four most effectual methods to better the safety of tall edifices are supplying: issue marks with illuming at floor degrees ; a separate design codification for super tall edifices ; fire safety and deliverance floors ; and decentalisation of fire systems. Eight other steps were besides found to be executable ( see Table I ) . A height bound on edifices and limitation of burdens on roof are the most unwanted steps. Future surveies on bettering the design of tall edifices may do usage of these findings. It is recommended that farther surveies into the strength decrease of stuffs subjected to intense fires should be carried out. This is because constructions may be able to defy the impact of aircraft onslaught, but may finally neglect after a decrease in their stuff belongingss with lifting temperature. While many of the methods proposed may be able to better the safety of edifices, increased cost is a critical concern ( Leftly and Lane, 2001 ) . Before the alterations materialize in the codifications, it is necessary to find whether the building industry is able to absorb the new steps and whether AEC professionals and clients are convinced of the demand to beef up edifices further. Safety steps proposed must be practical without doing edifice proprietors bear unneeded costs. Besides seeking to do edifices stronger by supplying redundancy or more back-up beds, it is recommended that the relevant parties explore and detect new agencies to contend fire. Finally, it is of import to look at edifice safety as a whole system alternatively of supplying bit-by-bit back-up beds or increasing the border of safety. Ultimately, each edifice may hold a alone solution depending on factors such as cost, infinite, proficient, economical and political issues. A balance between realistic costs and highly improbable events should be maintained. Table IPossible methods to better the safety of tall edifices Table IIProfile of respondents Table IIIResults of study and statistical trials

The Milky Way Galaxy What We Know About It

When we stare up into the heavens on a clear night, away from light pollution and other distractions, we can see a milky bar of light that spans across the sky. This is how our home galaxy, the Milky Way, got its name, and its how it looks from the inside. The Milky Way is estimated to span between 100,000 and 120,000 light-years from edge to edge and contains between 200 and 400 billion stars. Galaxy Type Studying our own galaxy is difficult since we cant get outside of it and look back. We have to use clever tricks to study it.  For instance, we look at all parts of the galaxy, and we do so in all available radiation bands. The radio and infrared bands, for instance, allow us to peer through regions of the galaxy that are filled with gas and dust and see stars that lay on the other side. X-ray emissions tell us about where the active regions are and visible light shows us where the stars and nebulae exist. We then use various techniques to measure the distances to various objects and plot all of this information together to get an idea of where stars and gas clouds are located and what structure is present in the galaxy. Initially, when this was done the results pointed to a solution that the Milky Way was a spiral galaxy. Upon further review with additional data and more sensitive instruments, scientists now believe that we actually reside in a subclass of spiral galaxies known as barred spiral galaxies. These galaxies are effectively the same as normal spiral galaxies except for the fact that they have at least one bar passing through the bulge of the galaxy off which the arms extend. There are some, however, that claim that while the complex barred structure favored by many is possible, that it would make the Milky Way quite different from other barred spiral galaxies that we see and that it might be possible that we instead live in an irregular galaxy. This is less likely, but not outside the realm of possibility. Our Location in the Milky Way Our solar system is located about two-thirds of the way out from the center of the galaxy, between two of the spiral arms. This is actually a great place to be. Being in the central bulge would not be preferential as the star density is much higher and there is a significantly higher rate of supernovae than in the outer regions of the galaxy. These facts make the bulge less safe for long term viability of life on planets. Being in one of the spiral arms is not all that great either, for much the same reasons. The gas and star density is much higher there, increasing the chances of collisions with our solar system. Age of the Milky Way There are various methods that we use to estimate the age of our Galaxy. Scientists have used star dating methods to date old stars and found some as old as 12.6 billion years (those in the globular cluster M4). This sets a lower bound for the age. Using cooling times of old white dwarfs gives a similar estimate of 12.7 billion years. The problem is that these techniques to date objects in our galaxy that would not have necessarily been around at the time of galaxy formation. White dwarfs, for instance, are stellar remnants created after a massive star dies. So that estimate does not take into about the lifetime of the progenitor star or the time it took for form said object. But recently, a method was used to estimate the age of red dwarfs. These stars live long lives and are created in large quantities. So it follows that some would have been created in the early days of the galaxy and would still be around today. One has recently been discovered in the galactic halo to be about 13.2 billion years old. This is only about half a billion years after the Big Bang. At the moment this is our best estimate of our galaxys age. There are inherent errors in these measurements as the methodologies, while backed up with serious science, are not completely bulletproof. But given the other evidence available this seems a reasonable value. Place in the Universe It was long thought that the Milky Way was located at the center of the Universe. Initially, this was likely due to hubris. But, later, it seemed that every direction we looked everything was moving away from us and we could see the same distance in every direction. This led to the notion that we must be in the center. However, this logic is faulty because we dont understand the geometry of the Universe, and we dont even understand the nature of the boundary of the Universe. So the short of it is that we dont have a reliable way to tell where we are in the Universe. We may be near the center - though this is not likely given the age of the Milky Way relative to the age of the Universe - or we may be nearly anywhere else. Though we are fairly certain that we are not near an edge, whatever that even means, were not really sure. The Local Group While, in general, everything in the universe is receding away from us. This was first noticed by Edwin Hubble and is the foundation of Hubbles Law. There are a group of objects that are close enough to us that we gravitationally interact with them and form a group. The Local Group, as it is known, consists of 54 galaxies. Most of the galaxies are dwarf galaxies, with the two larges galaxies being the Milky Way and the nearby Andromeda. The Milky Way and Andromeda are on a collision course and are expected to merge into a single galaxy a few billion years from now, likely forming a large elliptical galaxy.