life cycle of stars Essay -- essays research papers

LIFE CYCLE OF A STAR Stars are formed in nebulae, interstellar clouds of dust and gas (mostly hydrogen). These stellar nurseries are abundant in the arms of spiral galaxies. In these stellar nurseries, dense parts of these clouds undergo gravitational collapse and compress to form a rotating gas globule. The globule is cooled by emitting radio waves and infrared radiation. It is compressed by gravitational forces and also by shock waves of pressure from supernova or the hot gas released from nearby bright stars. These forces cause the roughly-spherical globule to collapse and rotate. The process of collapse takes from between 10,000 to 1,000,000 years. A Central Core and a Protoplanetary Disk: As the collapse proceeds, the temperature and pressure within the globule increases, as the atoms are in closer proximity. Also, the globule rotates faster and faster. This spinning action causes an increase in centrifugal forces (a radial force on spinning objects) that causes the globule to have a central core and a surrounding flattened disk of dust (called a protoplanetary disk or accretion disk). The central core becomes the star; the protoplanetary disk may eventually coalesce into orbiting planets, asteroids, etc. Protostar: The contracting cloud heats up due to friction and forms a glowing protostar; this stage lasts for roughly 50 million years. If there is enough material in the protostar, the gravitational collapse and the heating continue. If there is not enough material in the protostar, one possible outcome is a brown dwarf (a large, not-very-luminous celestial body having a mass between 1028 kg and 84 x 1028 kg). A Newborn Star: When a temperature of about 27,000,000ÂÂ °F is reached, nuclear fusion begins. This is the nuclear reaction in which hydrogen atoms are converted to helium atoms plus energy. This energy (radiation) production prevents further contraction of the star. Young stars emit jets of intense radiation that heat the surrounding matter to the point at which it glows brightly. These narrowly-focused jets can be trillions of miles long and can travel at 500,000 miles per hour. These jets may be focused by the star's magnetic field. The protostar is now a stable main sequence star which will remain in this state for about 10 billion years. After that, the hydrogen fuel is depleted and the star begins to die. Life span: The... ...densities are shown as numbers on the the central line that defines the Main Sequence (M.S.) of stars. Most known stars lie along this line; they describe a stage in which a star reaches some fixed size and mass and commences burning of most of its hydrogen before changing to some other star type off the sequence. Star types, which are defined on the basis of stellar surface temperatures (page 20-7), are shown by the letters (O, B,...etc.) assigned to each group and evolutionary pathways for some are indicated. This particular plot also shows along the right ordinate the total time that Main Sequence stars of different masses spend on that sequence before evolving along the several principal pathways (see below); as far as we now know, stars do not completely vanish, but survive as dwarfs or Black Holes ( but the latter in principle can disappear by evaporation as Hawking radiation). Temperatures were obtained using Chandra X-ray data. BILBLIOGRAPHY www.enchantedlearning.com/subjects/astronomy/stars/lifecycle/ imagine.gsfc.nasa.gov/docs/teachers/lifecycles/LC_main_p1.html hubblesite.org/newscenter/newsdesk/archive/releases/1999/20/ map.gsfc.nasa.gov/m_uni/uni_101stars.htm

A Study on the Relevance of Punctuality, Completeness and Accuracy

A Study on the Relevance of Punctuality, Completeness, Accuracy and Conformance to Requirements in the Architectural Profession Abstract:The Architectural Profession is God-like. Being a professional, an Architect is known as a designer of his world. Basically he is trained to design, to plan and to construct buildings and human settlements. The practice of an architect, where architecture means to offer or render professional services in connection with the design and construction of a building, or group of buildings and the space within the site surrounding the buildings, that have as their principal purpose human occupancy or use.A central issue in architectural profession is time management and work ability of an architect. The researcher noted all the basic ethics of an architect. Being punctuality is one of the basic. Architects are professionals who deal with professionals most of the time. Time is always of the essence. You have to transact at the agreed time always. Any dela y caused on your part is an inconvenience to the other party. Completeness and accuracy ethics can be performed at work with full of effort. Completeness and accuracy make the design perfect. Conformance to requirements is also indeed part of the basic ethics of an architect. Accompanying material: HR Profession MapConformance to requirements is the capability to follow all existing laws or decrees that were designed or enacted to serve the welfare of the majority. In conforming to requirements, an architect assures the safety of life and property involved particularly in architectural designs. It all boils down to professionalism. Keywords: Professionalism, punctuality, completeness, accuracy, architecture, ethics, conformance, creator, capability, relevance. Introduction The UAP (United Architects of the Philippines) Architect’s National Code Document Series 200 entails the code of ethical conduct.It includes the architect’s responsibilities in relation to the people, to his clients, contractor, manufacturers, dealers and agents, relation to his colleagues and subordinates. These responsibilities cannot stand to an architect unless he has moral values, passion, confidence and respect to the career he chose. But what is a name without a goo d attitude? The architect should know the importance of punctuality so that his work will be presented on the appointed time. His services should meet the necessity of his client; it ust be complete, accurate and conform to the requirements. 1 Objectives * To study the Importance of Punctuality, Completeness, Accuracy and Conformance to Requirements in Architectural Profession. * To know what are the right ethical conduct in Architectural Profession. 2 Methodology This study made use of the descriptive method. * To gather information through internet, books, media about the developing an understanding of professional ethics. * Personal interview with the architects who have been practicing the architectural profession and ask questions about the study. Output * To be able to pass a term paper about the Study on the Relevance of Punctuality, conformance, accuracy, and conformance to requirements in Architectural Profession. * To be able to form conclusions and recommendations about t he topic. Content 1. Professionalism and Ethics Architectural education should begin with students developing an understanding of professionalism and ethics. a. To students, develop the punctuality by attending the lectures in college on time; or at least on the learning stage. b.A curricular framework that recognizes the importance of a broad education including general studies, architectural studies and electives. c. Knowledge of the diverse needs, values, and behaviours that characterise different cultures and the implications of this diversity on the community roles and responsibilities of architects. d. Legal principles and ethical issues in practice. 2. The Architect’s Code of Ethics a. I shall work with this general objective – which my duty is not only to myself, but also to my Country and God. b.I shall uphold the ideals and follow the norms of conduct of a noble profession and endlessly endeavour to further its just ends. c. I shall humbly seek success not th rough the measure of solicited personal publicity, but by industrious application to my work, strive to merit a reputation for quality of service and for fair dealing. d. I shall ask from all, fair remuneration for my services while expecting and asking no profits from any other source. e. I shall hold the interest of my Client over and above any self-interest for financial returns. f.I shall exercise my professional prerogatives always with impartially and disinterestedness. g. I shall avoid any private business investments or venture which may tend to influence my professional judgement to the detriment of the trust placed upon me. h. I shall inspire by my behaviour the loyalty of my associates and subordinates and takes upon me the mentorship of the aspirants to the profession. i. I shall confine my criticisms and praises within constructive and inspirational limits and never resort to these means to further malicious motives. j.I shall dedicate myself to the pursuit of creative endeavour towards the goal of enlightened Art and Science, generously sharing with colleagues, friends and strangers alike the benefits of my experience and experiments. 3. The Importance of Punctuality Figure 1 A white businessman in a suit, holding a briefcase and sticking out from an arm of a cuckoo clock upon the hour of 9am, symbolizing punctuality. Punctuality is the most important habit that people need to develop. It’s a great virtue to be present on the appointed time. A punctual person is always one step ahead of others.Frequently when a person say plan work and work plan. But if you don’t start your work promptly, how can you become a better person in your life? According to Arch. Alexander Timbang(2011), â€Å"–you have to manage your time, don’t let time manage you. Be on time always. † When at work, to give time for a meeting or a site visit and not to be present there on time creates a bad impression. It should be the other way. An a rchitect shall be so particular about the time that others around you shall be alarmed about it. An architect must take note the possible time required to travel along the street. You must start on time.Don’t be use giving unreasonable excuses when you are late. It’s a bad habit. If you are late just say, â€Å"Sorry for the delay†. To avoid uncertainty and to be punctual, a diary habit will help a lot. If the meeting was cancelled or postponed it should be announced in advance not at the last minute. To avoid overlapping of the appointments, you must check your schedules on your diary, so you can give time to other appointment. Just give enough time gaps between the two successive appointments. * How to be punctual in work: a. Be considerate Think about how you would feel if someone else was late at your expense.Realize that it makes you look unreliable, even though you may be only a little late. If you are always waiting on someone, don’t try to figure out how you can be later than her/him. Use the time instead to read a book or something. b. Finish things early leave as little as possible to be done in the morning, you will be groggy then and everything you do will take longer than normal. If there were things you couldn’t finish in time the night before make a list of them and put them somewhere you can see quickly as you are getting ready in the morning. c. Put a clock everywhere unless you are in the habit of wearing and looking at wristwatches every now and then, having a clock at all your rooms helps you keep track of time. You can put alarms on your clocks so it goes off every half an hour or something, to let yourself know how much time is passing by and working accordingly. d. Set ahead your time – if you are a little late for everything you do, setting your clocks a few minutes ahead is a good idea. It’s up to you how much you set it ahead by, I know someone who has it ten minutes ahead. If it comes to a point where setting the time ahead isn’t working anymore, just change it again.You can set events earlier in your calendar too, schedule any projects due to be finished a day or two earlier than the actual due date. e. Prioritize – if you are running late, stop and think, for just a few seconds, what must be done now and what can be done later. This puts your tasks in priority and is a good way to organize and find time to do the things you need to without sacrificing time. It’s refreshing to get things done in time. When we know we are going to be late, we always think about it, or at least have it at the back of our thoughts. Once you get in the habit of doing things timely, you feel more reliable at yourself.It feels like a burden has been lifted off of you. 4. The Importance of Completeness and Work Accuracy In almost every line of work it is important if not critical that work be done accurately. Yet, there is a significant portion of the population fo r whom excellence, accuracy and attention to detail do not come naturally. The methodology corrects this and opens a critical doorway to career advancement. According to * The responsibilities of the Architect As the prime design professional, the architect assumes primary contractual responsibility to the owner for accuracy and completeness of the work of architect’s consultants.If something goes wrong, the architect can be held contractually liable to the owner for services improperly perform their services in accordance with applicable standards of professional practice, and failure to do so may result in their liability to injured parties. However, their failure to meet the standard of care may also make the architect contractually liable to the owner. The architectural profession has changed dramatically in recent years due to technological advancements. Computers and other electronic devices have improved the speed and accuracy of design and provided convenience for arc hitects.Despite these developments, there are some traditional tools that are still widely used in the architectural profession. Architects should be comfortable utilizing technology as well as more traditional methods of design. * Tools can be use of Architects to make their work accurate and complete: a. Computers Most architects work extensively with computers, using them to develop design ideas or draft construction documents using computer-aided design (CAD) software. Word processing software is used to write specifications, proposals and other documents. b. Large Format Printers or PlottersArchitects typically work with large-format drawings on 24 by 36-inch or larger paper. Most architectural firms have their own large-format printers or plotters to print and copy computer-generated drawings. c. Digital Photography Digital cameras enable an architect to document existing site conditions for future reference or for use in presentation images. Photographs help the architect rem ember important site characteristics that will influence the design. d. Measuring Devices Architects use measuring tapes or laser measuring tools to take accurate measurements on site, ensuring that their designs are accurate and feasible.An architectural scale, a type of ruler, is used for measuring scaled construction documents, or to scale down real-world measurements to a size that will fit on paper. e. Sketching Materials Even with computer software advancements, it is often quicker and easier for an architect to carry a sketchbook to jot down important notes and brainstorm design ideas as they occur. Tracing paper is still commonly used to sketch design modifications over existing drawings. f. Manual Drafting Tools CAD technology has almost completely replaced manual drafting, but some architects still prefer to draw by hand.Most architectural schools still teach manual drafting as a required skill. A drafting board, parallel rule, triangles, compass, drafting pencils and inki ng pens are some commonly used tools for hand drafting. ——————————————– [ 2 ]. http://www. di. net/articles/archive/3229/Professional_and_Ethics_in_Architectural-Education_DesignIntelligence. htm Nov. 3, 2011 [ 3 ]. ARCHITECT’S NATIONAL CODE, UAP DOC. 200, CODE OF EHTICAL CONDUCT, 1979. [ 4 ]. Importance of Punctuality in work,www. oppapers. com/essays/Importance-Of-Punctuality/194688

Academic Barriers Of High School Students Essay - 1198 Words

Academic barriers in High School The United States Census Bureau (2012), found that between 2006 through 2010, 14% of Hmong had their bachelor’s degree or higher. It was also noted that they â€Å"were below the national level of 28 percent† (2012, p. 5). Which is why it’s important to stress the importance of pursuing a higher education for Hmong high school students. However, academic barriers Hmong high school students face when planning their postsecondary plans, are financial hardships. Hmong students who participated in Lor’s research shared that â€Å"their parents’ financial resource were not enough to put them through college, as their parents did not have much formal education† (2008, p. 46). In fact, it has been recorded that the Hmong are â€Å"the poorest and most highly unemployed immigrants in the United States† (Su, Lee, Vang, 2005, p. 482; Swartz, Lee, Mortimer, 2003; Yang, 2003). For this reason, Hmong high school s tudents are encouraged to apply for financial aid, work-study programs, scholarships, grants, and seek employment to help pay their postsecondary expenses (Lor, 2008). In addition, Hmong high school students also struggle with understanding how the education system. It was brought to light that Hmong student in Xiong and Lam’s research stated, â€Å"having difficulties in navigating the higher education system, for example not knowing the academic requirements, admission requirements and campus resources† (2013, p. 137). Furthermore, a study conducted byShow MoreRelatedAcademic Barriers Hmong High School Students Face Essay1756 Words   |  8 PagesAcademic Barriers Hmong High School Students Face in the United States Introduction The Hmong, an Asian ethnic group, came from an oral culture, where they did not have any written form until the 1950s (McCall, 1999). 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