Thursday, March 12, 2020

The Life and Times of Neil DeGrasse Tyson

The Life and Times of Neil DeGrasse Tyson Have you heard or seen of  Dr. Neil deGrasse Tyson?   If youre a space and astronomy fan, you almost certainly have run across his work. Dr. Tyson is   the Frederick P. Rose Director of the Hayden Planetarium at the American Museum of Natural History. He is best-known as the host of COSMOS: A Space-Time Odyssey, a 21st-century continuation of Carl Sagans hit science series   COSMOS from the 1980s. Hes also the host and executive producer of StarTalk Radio, a streaming program available online and through such venues as iTunes and Google.   The Life and Times of Neil DeGrasse Tyson Born and raised in New York City, Dr. Tyson realized he wanted to study space science when he was young and had a look through a pair of binoculars at the Moon. At the age of 9, he visited the Hayden Planetarium. There he had his first good look at how the starry sky looked. However, as he has often said when he was growing up, being smart is not on the list of things that gets you respect. He recalled that at that time, African-American boys were expected to be athletes, not scholars. That didnt stop the young Tyson from exploring his dreams of the stars. At 13, he attended summer astronomy camp in the Mojave Desert. There, he could see millions of stars in the clear desert sky. He attended the Bronx High School of Science  and went on to earn a BA in Physics from Harvard. He was a student-athlete at Harvard, rowing on the crew team and was part of the wrestling team. After earning a Masters degree from the University of Texas at Austin, he went home to New York to do his doctoral work at Columbia. He eventually earned his Ph.D. in Astrophysics from Columbia University. As a doctoral student, Tyson wrote his dissertation on the Galactic Bulge. Thats the central region of our galaxy. It contains many older stars as well as a black hole and clouds of gas and dust. He worked as an astrophysicist and research scientist at Princeton University for a time and as a columnist for StarDate magazine. In 1996, Dr. Tyson became the first occupant of the Frederick P. Rose Directorship of the Hayden Planetarium in New York City (the youngest director in the long history of the planetarium). He worked as the project scientist for the planetariums renovation that began in 1997 and founded the department of astrophysics at the museum.   The Pluto Controversy In 2006, Dr. Tyson made news (along with the International Astronomical Union) when  Plutos planetary status was changed to dwarf planet. He has taken an active role in the public debate about the issue, often disagreeing with established planetary scientists about the nomenclature, while agreeing that Pluto is an interesting and unique world in the solar system.    Neil DeGrasse Tysons Astronomy Writing Career Dr. Tyson published the first of a number of books on astronomy and astrophysics in 1988. His research interests include star formation, exploding stars, dwarf galaxies, and the structure of our Milky Way. To conduct his research, he has used telescopes all over the world, as well as the Hubble Space Telescope. Over the years, he has written a number of research papers on these topics.   Dr. Tyson is heavily involved in writing about science for public consumption. He has worked on such books as One Universe: At Home in the Cosmos  (coauthored with Charles Liu and Robert Irion) and a very popular-level book called Just Visiting This Planet. He also wrote Space Chronicles: Facing the Ultimate Frontier, and as well as Death by Black Hole, among other popular books. Dr. Neil deGrasse Tyson is married with two children and resides in New York City. His contributions to the public appreciation of the cosmos were recognized by the International Astronomical Union in their official naming of asteroid 13123 Tyson.   Edited by Carolyn Collins Petersen

Tuesday, February 25, 2020

The Arabidopsis Myb Genes MYR1 and MYR2 Essay Example | Topics and Well Written Essays - 750 words

The Arabidopsis Myb Genes MYR1 and MYR2 - Essay Example Arabidopsis is a long day plant that flowers earlier than other plants in long day conditions than in short day conditions. In LD conditions flowering is affected by an increase in expression of the flowering locus T (FT). This gene expression is controlled by CONSTANS (CO). Under low light intensity, homozygous myr1 and myr2 mutants will flower and show an increase in petiole length, apical dominance and leaf angle. Analysis on the genetics of the mutants point out that myr1 and myr 2 phenotype need GA biosynthesis. In determination of the functions of MYR1 and MYR2 roles in plant development and growth two independent T-DNA alleles for every gene. The T- DNA were evaluated and discovered that they eliminated full length expression of MYR1 and MYR2 in plants homozygous to every mutation. The homozygous myr1 and myr2 mutants happened to be identical to WT plants in relation to their leaf color, plant size and morphology. In SD conditions plants that had any of these alleles had an ea rly flowering and this generally indicates that myr1 and myr2 had suppressive effects on flowering. Additionally, flowering locust T was also needed by the Myr1 and Myr2 phenotype responsible for flowering and these mutants also demonstrated an interface with phyB-9 mutant. When Myr1 and Myr2 are over expressed, GA deficiency symptoms are shown which are then eliminated by use of gibberellic acid (GA1). When Myr1 and Myr2 were lost, there was a double boost in GA20ox2 expression and GA1 levels increased by 30%. Myr2 over expression caused a three time GA20ox2 decrease and 50% reduction in GA1 levels. Therefore, it can be concluded that Myr1 and Myr2 ability to limit flowering and elongation of organs is slightly because of their destructive consequence on the bioactive GA levels. In this case, it is possible that the increase in expression for the GA negative regulators showed the property of having a shade avoidance phenotype. The role of MYR1 and MYR2 of affecting the GA2O0x2 expr ession could be the determinant for observed phenotypes and it is in the same line with research on GA2O0x2 genes that indicate their importance in regulating growth and fertility of the Arabidopsis plant. This essay is based on a previous research done by several researchers. It will describe the result, outline the conclusion and give an insight on future work based on this research. In the result that has indicated that MYR1 and MYR2 have a role in plant growth and development, it is indicated that as light intensity became high, the phenotype became weak and double mutants of myr1 and myr2 produced fewer than WT, rosette leaves. In relation, vegetative growth and flowering time characteristic of the myr1 and myr2 mutants exhibited a similarity with phyB mutants. When MYR1 and MYR2 are paralogous and the genes are co-expressed, lengthening of the vegetative period in SD conditions showed a weakening in the phenotype responsible for early flowering. Myr1 and myr2 that were early f lowering under a LD environment was connected with more features that were not present in single mutants. They a longer petiole, lengthy hypocotyls and the leaves were more vertically oriented with a peak in apical dominance. This features show that the early flowering phenotype had been strengthened and that both myr1 and myr2 double mutants expressed the presence of MYR1 and MYR2 redundancy property which was not shown in the single mutant’s myr1 and myr2. In addition it was discovered that MYR1 and M

Saturday, February 8, 2020

Operations Managment Essay Example | Topics and Well Written Essays - 2000 words

Operations Managment - Essay Example Through the utilization of new technological applications, the said process of recruiting shall be given the most important development it is expected to take to cater to the needs of the growing number of applicants. Computers and the benefits that it provides the society has made the present generation of humanity what it needs in terms of technological assistance. Along with this, several other supporting programs were then produced to be able to give answer to other demands of the society from computing operations. Yes, it just gets better every time. Some programs are created for individuals, while some are created especially for business companies, which are controlling the global economic stability of the society today. All these programs are considered assistance for users for them to be able to have better access to the technological innovations brought about by computing operations. According to an article entitled "Computer-Tool or Tyrant", Computers, through the history of mankind have provided the society with the necessary assistance at times even more than that as it continuously develop for better applications. This claim is especially true when the talk is all about companies who are dealing with multitasking in their daily activities. The storage of the files that are needed to be kept for record could not be done through the traditional file-shelves system. Hence, the introduction of programs and operating systems brought so much ease to this so called corporal responsibilities and duties. In this paper, a suggested process of operations management using the computer office operations shall be presented so as to assist in the process of shortening the time by which an institution approves the application of hopefuls who want to enroll in Marine Officer Programs offered by the organization. Through the said process to be suggested, it is expected that the process of application would become more efficient and the process of approval be less time consuming thus allowing the personnel of the organization to put their attention to more important things such as improving the whole program for the enrollees. The Importance of Knowing How OS Works Living in such a technologically driven world, it could not be denied that the interest of people in the developing systems of computing operations is also growing. As the computing operations and applications develop, the demands of the society from the benefits that it provides for the individuals and the large organizational companies also increases. The discussion that shall be presented herein Technology too, controls the present situation of the global economy. In fact, the internet applications have completely revolutionized the processes by which trade systems are operating in the current business industry. Certainly, it could be noticed that the production of operating systems that are ready to provide business entrepreneurs with the assistance that they need to be able to cope up with the global competition of industries, the global economy tends to grow even bigger and more stable. The discussion that would be presented in this paper then shall give a clear vision on how Linux is able to provide the said needs of companies worldwide. What is it that makes Linux one of the most reliable operating

Thursday, January 30, 2020

Romeo and Mercutio Essay Example for Free

Romeo and Mercutio Essay ‘Explore the ways in which Romeo and Mercutio are presented in Act 1 Scene 4 and elsewhere in Shakespeare’s play and in the performed version. In act 1 scene 4 of Romeo and Juliet, characters Romeo and Mercutio express different feelings that draw the reader in and shows how important the relationship between them is. In the scene everybody is wearing masks and Mercutio and Romeo have attended the Capulet’s party. Romeo states that he will not dance at the Capulet’s feast as he loves someone who does not love him so he is not in the mood to dance and be happy but Mercutio (a close friend of Romeo) tries to convince him to dance. Mercutio then goes on to recite his speech to Romeo about Queen Mab of the fairies and how she visits your dreams. Romeo is presented in a way that he seems like he worries whether dreams come true or if they are just made up. This makes him seem more scared than ready for anything. In Act 1 Scene 4, Romeo says that he â€Å"dreamt a dream tonight† to his friends Mercutio and Benvolio, on their way to the Capulet’s feast. He is worried whether his dream will actually become reality, saying that he fears the â€Å"vile forfeit of untimely death†. However, at the end of the play you see his dream as real life as he does eventually die before his time, because of this happening it is able to prove that Romeo may be seen a psychic. Also in this scene you see Mercutio also express his view on dreams and desires in his Queen Mab speech. After Romeo says that he dreamt a dream, Mercutio then jumps in and says he too dreamt a dream, although he says that â€Å"dreamers often lie†. He begins to describe Queen Mab, a fairy that brings fantasies to dreams. The speech begins very imaginative and unusual but changes nearer the end. Mercutio ends the speech saying that dreams are â€Å"children of an idle brain† and dreams are nothing but hopes. This shows Mercutio’s view on dreams and desires, which is that they are demeaning and undignified in comparison to Romeo’s view who see them quite real and true. This scene also shows how sensitive and depressed Romeo’s character really  is. Romeo talks about how uncomfortable being in love is making him feel â€Å"Under love’s heavy burden do I sink†. This is saying that Romeo sinks because of the strong and heavy weight of love. You can tell from this that Romeo is not enjoying being in love and at the beginning Rosaline does not love him and how sad this makes him feel – so the audience is being prepared for the meeting of Juliet and Romeo. Romeo is extremely depressed and does intend to dance or be merry, which is the reason that his good friend Mercutio tries to stop Romeo from feeling this way. Romeo and Mercutio’s relationship in the play in very important to the plot of Romeo and Juliet, for starters, Mercutio is the one who convinces Romeo to attend the Capulet’s feast and this is where Romeo and Juliet meet for the first time. No matter how reluctant to going Romeo was Mercutio was able to get Romeo to agree to go. Without Mercutio the couple would never of met and the play or Romeo and Juliet would not be able to unfold in the way it does. Another reason is because of Mercutios death it sets off event which then lead to the banishment of Romeo which then draws Romeo and Juliet together again. Not only is there comparison between parts of the actual play and film but there are differences with how they are both performed. A main comparison is that in a play text the focus is on what is spoken and it is then up to the imagination to build on a character. Whereas in a film text the focus is on how the characters look and the colours they are wearing because this can symbolise what the characters are like emotions. Another large difference is, in the play the language that is used creates different moods, whether it be poetic, longs or short sentences they all create various emotions – for example a short sentence may be trying to build tension between the characters. However, in the film, the camera shots affect how the characters feelings are put across to the viewer. Close ups are intended to show tension whereas longer shorts may be to show peace between the characters. This shows that there are infact many differences between the time in which Shakespeare, the per formed version was set and shown on stage and Shakespeare the filmed version was shown through the camera.

Tuesday, January 21, 2020

Legend of the Covered Bridge :: Urban Legends Ghost Stories

Jericho Covered Bridge in Kingsville, Maryland The Jericho Covered Bridge in Kingsville, Maryland was built in 1865 and restored in 1982. The bridge is 100 feet long and cased in cedar planks and timber beams. Legend has it that after the Civil War many lynchings occurred on the bridge. Passersby were supposedly captured on the bridge and hung from the upper rafters. The bridge is very close to my house and I have driven over it several times. The storyteller, age 19, also lives a couple minutes away from the bridge. He has lived in Kingsville, Maryland his entire life. He recalled a dramatic story he had heard from his older brother involving the haunted bridge. Approximately a year ago the storyteller’s older brother was driving home with two friends after leaving a party. They decided to smoke a joint and drive over the legendary Jericho Covered Bridge. The night was chilly and foggy. As they crossed over the bridge, the driver decided it would be funny to follow the legend to see if it was true. The driver turned off the head lights, rolled all windows down, and turned off the ignition. After a dramatic pause, the storyteller explained that the driver honked his horn 3 times in a row. As the driver shifted his focus onto his rear view mirror and yelled â€Å"What the F**k!† Before the two passengers knew what happened, the driver quickly turned on the ignition and sped away from the bridge. One of the passengers asked, â€Å"Dude, what was that about?† The driver explained he had seen three ashy, male bodies hanging from the bridge each suspended by a long, frayed rope. While telling the story the storyteller used very specific details to produce an effective presentation. He paused several times for dramatic effect, indicating that something important was going to happen. Also, he told the story confidently, rarely stuttering in a short of words. The storyteller appeared to be extremely knowledgeable on the subject because the incident happened to his older brother and due to the bridge's close proximity to his home. While listening to the story I noticed several details that seemed to be exaggerated for effect, such as the three male bodies hanging from the rafters. When reaching the climax of the story the teller did a great job in portraying the frightened expressions of the driver and passengers. Upon researching the story, I stumbled across one Web page (http://www.

Monday, January 13, 2020

How to Improve Our Government Essay

People every day make mistakes, and find flaws in their everyday tasks. No one person in this country can consider his, or herself, perfect. Knowledgeable people do exist in this world though, and our government strives to find and elect these representatives. These representatives then make decisions that affect our country in ways some might find positive, though others perceive as negative. Representatives could make decisions that would only impact our government in a negative way. Our government has its flaws, along with the people running it. I can think of several ways to help to improve the government and its efficiency. A decrease in government funding for our National Defense would increase funding in other important areas. People across our nation need jobs, and are struggling to find a source of income. If we used some of the funding that we attribute to our Nation Defense, then this money might benefit in the use of creating new jobs and opportunities for people. Not only would we have money to provide jobs, but this funding could be used to help create and search for new information in the field of Cancer Research. The government funds provide people that lack occupations and have no source of income, with a reliable way of obtaining money for themselves to provide for his or her, and/or his or her family. These welfare recipients may draw unemployment after applying and meeting the requirements need to obtain this welfare money. These requirements may not be strict enough, which would lead to the allowance of the unemployed to gather money while being lazy in the process. Due to the lack of work ethic found in people, drug use may attribute to this laziness. A requirement may need to be added in order for the recipients to pass a drug test (a test for multiple drugs) in order to draw unemployment, in return saving the wasted money the government provides to the unworthy. The government could invest much of their funding in renewable energy sources. The post installation outcome of these windmills, energy providing dams, etc. would help save money later on in the future. With these funds being provided to help â€Å"Go Green†, the earth itself would take a drastic increase in cleanliness. The government then might avoid conflicts  with foreign nations in the search for the fossil fuels, of which we currently use as energy. Doing this might then allow us to pull our troops out of these foreign nations, saving lives and money provided for the troops. The government has a reliable system that has gotten our country out of some troubled times, and may be one of the most united governments the world has seen. As previously stated though, nothing and no single person is perfect. With these little changes in the way the government goes about, it may impact funding, our unity, and occupations for the people of the United States, allowing people to live and prosper, with freedom and peace throughout.