Communication Essay Example | Topics and Well Written Essays - 1500 words - 1

Communication - Essay Example The story kept me in suspense. There was no predictability in the plot, which always kept you guessing as to what will happen to the characters. I was half-way through the story and yet I cannot anticipate how the story will end. The main issues in the story remain unresolved even after the story ended. The story keeps running on my mind because I am trying to process the story. There is no clarity and closure even at the end. All throughout the story, I seem to be waiting for a greater surprise as to what will be the ending. The author’s style is to slowly bring the reader to the awareness of the twist in the story. The theme of running away is repeated all throughout and it is presented as an unacceptable option. The story depicts several forms of complicated relationships. The relationship between romantic partners, that of Clark and Carla, the relationship between a parent and a child, that of Carla and her parents and the relationship between friends, that of Carla and Mr s. Jamieson. â€Å"Runaway† also presents the inner struggles of a woman, her weaknesses and her strengths. It shows how sometimes a woman acts differently outside, not letting her inner being reflect her actions. The story is presented in a lucid and vivid manner but I am confused whether I like the characters or not. All the characters in the story starting from Carla, Clark, and Mrs. Jamieson surprise me as to their real persona. They are not predictable. I just cannot anticipate their actions. Munro’s writing style is one wherein she predicts her readers’ thoughts and perceptions and then she disproves the readers’ expectations by writing the opposite of what they expect. This is one quality that I admire in Munro’s literary style. It kept me at the edge of my seat. The characters are described in details which reflect true to life people. It is through this detailed characterization that one can feel an emotional attachment to the characters. I just cannot stop thinking about the characters even after reading the story. I had to analyze each character and explain to myself why they reacted in a certain way when faced with the situations in the story. I also cannot stop wondering what will happen to them in the future. Carla, the main character of â€Å"Runaway† suffered from indecision all throughout the story. Carla depicts a character with an impulsive emotion. She feels lost but she has no roots. I think Carla thought she could run away from her husband but she was actually incapable of doing so. As described in Bruner’s ten features of narrative, I can say that running away from Clark is her intentional state but as we can see from the ending of the story, her intentional state did not determine the ending of story. She wanted to runaway but later on changed her mind. She wanted to change her life abruptly but suddenly while in the bus decides to get-off. There seems to be an onset of a different set of sensations which was exactly the opposite of what she felt when she was conversing with Mrs. Jamieson and planning her escape. Just when you think that Carla is a hero, she unexpectedly shows her flaws. At the beginning of the story, I thought that Mrs. Jamieson was the antagonist in the story because of Carla’s reaction when she saw her driving along the road. She even thought in her mind, â€Å"Let it not be her.† In the end though, I realize that Mrs. Jamieson

What are the main sources of international competitive advantage Think Essay

What are the main sources of international competitive advantage Think about a successful product in your country, what are the - Essay Example Focus Strategy: When a business implements any of the cost leadership or differentiation strategy but in a specific customer target group like in a specific geographical area, the niche segment or a specialized line of products. Competitive advantage is achieved by making optimal use of the resources and the capabilities of then business to create a structure with lower cost or a differentiated product. Achieving a sustainable competitive advantage makes a firm capable of creating more value for its customers and deriving super profits from the business. The main sources of competitive advantage are the asset resources, capabilities and the key success factors. In this report we consider the Porsche cars to study the process of competitive advantage achieved by this line of products. Discussion Porsche is a highly profitable company which manufactures luxurious premium cars. The brand offer elegance and comfort in their products and is segmented as a premium product. Porsche cars hav e gained enormous competitive advantage by implementing a focus differentiation strategy. ... To ensure serving these customers effectively and ensure brand loyalty, Porsche has developed unique aligned capabilities. The mission statement of Porsche is perfectly aligned with their strategic planning thus creating an authentic and unique product. The brand has achieved ultimate competitive advantage by strategically combining quality and uniqueness in its products. The lean production system adopted in the manufacturing of the cars is a key factor in gaining competitive advantage for the product. The resources maintained by the company is carefully chosen and highly maintained. The human resources and the physical resources of the brand add to the value chain. Porsche recruits highly qualified people as their staff and extensively train them to make them competent enough. The employees are imparted with necessary skills through training centres all over the world and in Germany especially. The company supports and motivates their staff by maintaining a financial incentive stru cture where a percentage of the yearly turnover is given as incentives to the employees of Porsche according to the company results. The physical resources of the company are of high quality and the manufacturing process involves using materials of high quality and the use of advanced technology (Porter, 2008, p. 68). The Research and Development team of Porsche in Germany tries to innovate and create superior quality and unique products so as to achieve sustainable competitive advantage. The configuration of the manufacturing plants is concentrated and every department of production is maintained in the closest possible place. Only few parts are imported from other countries or taken from other

Alternatives To The Instrument Landing Systems Engineering Essay

Alternatives To The Instrument Landing Systems Engineering Essay Pilots have been faced with horrors of not being able to safely carry out the whole flight envelope activities during unfavourable weather conditions. The solution was the idea of somehow aiding pilots with instruments that would help get the job done. The Instrument Landing System (ILS), being the first, did break the ice but its faults and restrictions paved way for alternatives like the MPL, JPAL, IGS and TLS amongst others. It cannot be overlooked though that the ILS is still the most common of all approaches and pilots are tested numerous times on the workings of the ILS during their flight career. The Instrument Landing System (ILS) is an instrument presented, pilot interpreted, precision approach aid. The system provides the pilot with instrument indications which, when utilised in conjunction with the normal flight instruments, enables the aircraft to be manoeuvred along a precise, predetermined, final approach path. [1] Tests of the ILS began in 1929 and the Civil Aviation Authority (CAA) authorised installation of the system in 1941 at six locations. The first landing of a scheduled U.S. passenger airliner using ILS was on January 26, 1938, as a Pennsylvania Central Airlines Boeing 247-D flew from Washington D.C. to Pittsburgh and landed in a snowstorm using only the Instrument Landing System.[2] The first fully automatic landing using ILS occurred at Bedford Airport UK in March 1964. [3] 1.1 Overview on the Instrument Landing System (ILS) The ILS uses two primary signals: a localizer for lateral guidance (VHF) operating between frequencies 108.10MHz and 111.95MHz; and a glide slope for vertical guidance (UHF) operating between 329.30MHz to 335.00MHz. The localizer provides course guidance throughout the descent path to the runway threshold from a distance of 18 NM from the antenna between an altitude of 1,000 feet about the highest terrain along the course line and 4,500 feet about the elevation of the antenna site. [4] On the other hand, the glide consists of two overlapping beam modulated at 150Hz and 90Hz. The centre line of the glideslope signal is arranged to define a glide slope of approximately 3Â ° above ground level with the beam being 0.7Â ° below the glideslope centreline and 0.7Â ° above the glideslope centreline i.e. 1.4Â ° in total. The transmitter is located 750 to 1,250 ft. down the runway from the threshold, offset 400 to 600 ft. from the runway centreline [5]. 1.2 Limitations facing the ILS The complexity of the ILS localizer and glide-slope system gives rise to its high installation cost. Also, there are topographic limitations with the ILS because of the complex siting requirements due to the sensitivity of both the localizer and glide slope systems. The localizers full functionality is limited due to effects from obstructions in the signal broadcast areas like hangers and large buildings and the glide-slope conversely is affected by the terrain in front of the glide-slope antenna. If terrain is sloping or uneven, reflections can create an uneven glide-path causing unwanted needle deflections. Additionally, the ILS only supports straight-in approaches since its signals are pointed in one direction by the positioning of the antennae arrays. Furthermore, the ILS suffers from frequency congestion because of a finite number of available frequencies (only 40 channels in all)[6], and has frequency modulation interference problems in some areas.[7] Also, the fact that it is not easily deployable makes it fall out of favour with the military. These main facts resulted into the development of the Microwave Landing System (MLS) with one intention only, to replace the ILS. 2. The Microwave Landing System (MLS) 2.1 History of the MLS The Microwave Landing System was designed to replace or supplement the ILS. Tests of the MLS began in 1972 in Australia. Most of this work was jointly done by the then Federal Department of Civil Aviation (DCA), and the Radio Physics Division of the Commonwealth Scientific and Industrial Research Organisation (CSIRO). The project was called Interscan which was one of the many Microwave Landing System under consideration internationally. Interscan was chosen by the FAA in 1975 and ICAO in 1978 as the format to be adopted. [8] The MLS was standardised in 1988 and approved for use in international civil aviation. [9] 2.2 Overview and advantages of the MLS over the ILS MLS employs 5GHz transmitters at the landing place which use passive electronically scanned arrays to send scanning beams towards approaching aircraft. An aircraft that enters the scanned volume uses a special receiver that calculates its position by measuring the arrival times of the beams. The MLS operates in the microwave spectrum of 5.0-5.25 GHz/15.4-15.7 GHz. It provides azimuth, elevation and distance measurement to aircraft having the necessary components installed. It has various advantages over the ILS as it is more accurate and preferable in providing approach guidance to aircrafts. It is capable of providing fan coverage range of +/- 40 degrees either side of the antennae and a horizontal distance of about 20NM from the runway touchdown point for azimuth approaches and +/- 20degrees fan coverage area from a horizontal distance of 5NM for back azimuth for a missed approach situation. The ILS on the other hand can only accurately provide course guidance of +/- 10 degrees eit her side of the antennae from a horizontal distance of 18NM for forward azimuth approach and a further +/- 25 degrees fan coverage area (+/- 35degrees in total for azimuth approaches) from a horizontal distance of 10NM for back azimuth on a missed approach. Any area beneath the +/- 35 degrees coverage area, signal may provide incorrect or undesirable readings by the instruments. [10] This statement is graphically represented in figure 1. Figure 1. The MLS coverage area. Also, the DME (Distance Measuring Equipment) on the ILS provides a range accuracy of +/- 1,200ft. as compared with greatly improved version on the MLS called the DME/P (for Precision) which provides a range accuracy of +/- 100feet making it possible for the MLS to guide the extremely accurate CATIII approaches which was previously normally carried out with expensive ground based high precision radar equipment with the ILS. Furthermore, with the MLS having 200 channels for communication/broadcast operating between 5031 and 5090.6 MHz (far from FM broadcast frequencies) gives it further advantage through getting rid of jamming and interference problems faced with the ILS because its operational channel frequencies are fairly close to FM broadcast frequencies. In addition, the MLS antennae are small because it transmits at higher frequencies, cheaper and easy to construct and maintain as it does not employ a Localizer and glideslope transmitter. It can also be placed anywhere as compared to the ILS system that has to be placed at the end of the runway and along the approach path. Again, it has the advantage of providing precision guidance to V/STOL (Shot Take-off and Landing) aircrafts and helicopters in small areas e.g. roof-top helicopters which is impossible with the ILS. In addition, it cannot only accommodate straight-in or segmented approaches but also curved approaches as the transmitter does not have to be in direct alignment with the receiver before landing can be possible and this is so because the MLS transmitter signal covers a very large fan-shaped coverage area. Finally, because of the higher frequency the MLS operate, precisely in a ratio of 50:1 as compared with the ILS, it therefore requires a smaller antenna. A 1o beam-width antenna for a MLS requires 12ft (3.6m) antenna while a typical ILS system would require a 600ft (180m) antennae size for the same 1o beam-width losing out again to the MLS to size advantage. [11]. The MLS expectation to replace the ILS was actually the reverse as a lot of airliners were reluctant to converting to MLS because it required them installing and or changing some equipment on board the aircraft and on the ground. Also, at almost about the same time came the invention of the GPS. The GPS required no installations in airports. It never employed placing any antennae along the runway like the ILS and MLS. This eliminates the siting requirements imposed by both initial systems and gave rise to simplicity. 3. The GPS and the WAAS: The GPS, Global Positioning System, consists of a space-based radio navigation satellite and network of ground stations for controlling and monitoring. The space portion consists of at least 24 GPS satellites orbiting the earth twice in a day at a speed of about 7,000miles per hour and about 11,000 miles in altitude from the earths surface.[12] The GPS provides accurate data of current position. Basically, to get current location using the GPS, data is sent from the object e.g. the aircraft and it measures the time taken for the wave to reach the satellite and return and by means of triangulation using at least three satellites, accurate location can be calculated. The GPS though also has some limitations. It cannot be employed for precision landing since it does not give enough vertical accuracy and as known, vertical accuracy ensures safer landing. The GPS precisely provides a vertical accuracy of about 15meters and even the certification for the least, CAT I landing requires a ver tical accuracy of at least 4meters. The inaccuracy is caused by the interaction of the radio signals with large waves in the ionosphere. This interaction slows down the time for the radio signal to be reflected back to its source since even a very small clock error multiplied by the very large speed of light (the speed at which satellite signals propagate) results in a large positional error. These errors aroused the introduction of the WAAS (Wide Area Augmentation System). The WAAS basically employs the same space-based satellite and ground based stations as the GPS but its main difference is that it sends out correctional signal to augment errors in the GPS signal. Two master stations located on either coast collects data from the reference station and a GPS correction message. This correction accounts for GPS satellite orbit and clock drift plus signal delays caused by the atmosphere and ionosphere. The corrected differential message is then broadcast through one of two geostatio nary satellites (satellites with a fixed position over the equator). The information is compatible with the basic GPS signal structure, which means any WAAS-enabled GPS receiver can read the signal. For some users, in the U.S for example, they are not able to receive the corrected WAAS signal because of obstructions from trees and mountains. So plainly speaking, the GPS or WAAS is just not accurate enough to replace the ILS and this further encouraged the manufacture of other precision landing systems. [13] 4. JPALS (Joint Precision Approach and Landing System) JPALS or the Joint Precision Approach Landing System is an all weather precision landing system developed and mainly intended for use by the military. The crash of a U.S. military transport in Bosnia in 1996, while flying a non-precision approach in adverse weather highlighted the need for a near-term, rapidly deployable precision approach system. As a result, the Air Mobility Command is pursuing an initiative to field a precision approach system to solve problems like the one encountered in Bosnia. In 1992, the Assistant Secretary of Defense for C3I directed a study to analyze existing emerging PALS technologies. Tasking was passed through the Air Force to the DoD Policy Board on Federal Aviation, which chartered the Precision Landing Study Advisory Group (PLSAG) to produce a JPALS Mission Needs Statement (MNS). The Joint Requirements Oversight Council validated the MNS in August 1995. [14] JPALS was developed by the military for two main reasons: 1. They needed an all weather precision landing system that is highly mobile and open to most if not all military scenarios, such as landing on ships, rough terrains etc. and 2. They needed a rugged system that would work and withstand any weather and environmental conditions. JPALS is similar in concept to the civilian Local Augmentation Area System, LAAS. JPALS augments GPS to provide precision approach and landing information for military aircrafts flying in poor weather or low visibility. A typical JPALS system consists of both ground and airborne component. The ground component transmits correctional messages to augment the GPS signal. It also transmits a set of co-ordinate data defining the final approach path. The airborne receiver on the aircraft determines the position relative to the desired approach path or runway if you like. This information is displayed on the pilots PFD. A single JPALS ground system can support multiple runways in an airport and it can also support different approach path to a single runway. Also, the same JPALS ground system can support approaches to nearby airports within a 10-20miles radius. Furthermore, if a portion of the runway sustains damage, the landing threshold position can be moved further up front the runway. JPALS is divided into two main categories namely the SRGPS and the LDGPS. SRGPS provides highly accurate precision landing for aircrafts aboard ships, S/VTOL, helicopters. LDGPS is further subdivided into three categories. The fixed base used by military for on going operations around the world, the Tactical base designed for short-term critical operations and the Special missions is highly portable and used by Special Forces on special missions. Figure 2 simplifies the subdivisions. Figure 2. JPALS classifications A typical Special Missions JPALS system would be carried in two bag packs and can be set up by two airmen within a few minutes. The prototype system consists of a two GPS receiver enclosure, a laptop and a data link transmitter. In November 2007, this system was set up and tested at the FAAs Williams J. Hughes technical centre in Atlantic City, NJ. This man-packed system was tested using the FAAs covey test aircraft and by a C21 aircraft provided by the airforces Flight Standard Agency. These two aircrafts successfully demonstrated the ability of the man-packed JPALS system to support the CAT1 approach and also further demonstrated its success after the landing threshold position was moved further up the runway in a case of a damaged portion of the runway. [15][16] 5. Conclusion: The ability for aircraft to fly and land under any circumstance is very much important as it ensures safety, integrity to the industry and comfort to passengers. As pilots of the earlier days were almost completely paralysed due to effects from bad weather or worse would crash as it happened to the military transport aircraft in Bosnia urged the need for solutions. The faults in the ILS paved way for the MLS, GPS, JPALS and others. A Transponder Landing System or the TLS would also work where a typical ILS would not provided there is no paralysis in funds. The latest alternative to the ILS is the Localise Performance with Vertical guidance or the LPV which is also based on the same operation as the WAAS and as of Nov. 2008[update], the FAA has published more LPV approaches than Category I ILS procedures. Generally, these precision and landing systems have greatly improved the integrity and safety of the Aviation industry, both military and civilian.

Far East :: essays research papers

A Critique Abstract The Far East, written by Paul H. Clyde and Burton F. Beers is a book containing a collection of facts and is presented in chronological and topical order starting with history in general and this history in particular. The authors begin their book with â€Å"What is history?† The answer is â€Å"In its simplest form, history is the record of things thought, said, and done. Such a definition is a useful starting point but it leaves a host of questions unanswered†. (p.1) It is here that I find myself in complete agreement with the authors not just for this book but history in general as a subject. The authors’ foundation for their book is centered on the subject of history itself. However, it is at this point that I begin to have problems with analysis presented. The authors make the examination, â€Å"For those who are practically inclined, it is a principal means through which man may anticipate the future†. (p.2) I think this statement is more wishful than realistic. The geographic depiction offered in the book gives the reader unfamiliar with this region of the world a 1) starting point on a world map and a 2) sense of not only where but the density covered by the book. With this sense the reader can better understand why there is demographic, cultural, and language differences within and among the many countries as well as the root similarities. The reader finds enhanced discerning to the impact of east meeting west; how from their views the cultural shock was enormous in the past and continues today. The book research is both extensive and systematic, cumulating some 50 odd years. I, as a reader, cannot say the good or bad of this other than to say the focus of the book seems distinctive in content, with the sources listed point to this detail. Book Organization Overall Composition The book includes thirty-six chapters of surprising stories some superb and some grisly of regional history and is arranged in chronological order. Selective chapters are organized with regional chronicles of Old China to New Governments of Asia since 1953. The chapters relate many details and events and processes with noteworthy consequences that have made a foremost impact to the past and present world. It is pragmatically written and contains distortions and omitted parts. It is apparent that it is written from a Western point of view.

Paraphrasing

Paraphrase the following extracts taken from the short stories by Kaki and Dylan Thomas we read last week. 1 )Although he was scarcely yet out of his teens, the Duke of CSCW was already marked out as a personality widely differing from others of his caste and period. Not in externals; therein he conformed correctly to type. His hair was faintly reminiscent of Habitant, and at the other end of him his shoes exhaled the right SOUPÇON of harness-room; his socks compelled one's attention without losing one's respect; and his attitude in repose had just that suggestion of Whistler's other, so becoming in the really young.It was within that the trouble lay, if trouble it could be accounted, which marked him apart from his fellows. The Duke was religious. Not in any of the ordinary senses of the word; he took small heed of High Church or Evangelical standpoints, he stood outside of all the movements and missions and cults and crusades of the day, uncaring and uninterested. Yet in a myst ical- practical way of his own, which had served him unscathed and unshaken through the fickle years of boyhood, he was Intensely and Intensively religious. HIS Emily were naturally, though unobtrusively, distressed about It. L am so afraid It may affect his bridge,† said his mother. ( taken from â€Å"The Ministers of Grace† by Kaki) ? The Duke of CSCW had a marked personality that The verb â€Å"defer† Is Intransitive him from others of his caste and period. He was the right to his type not only for himself but also for the externals. He was so alike of Habitant and his shoes showed a bit of the harness-room; one's attention was wrong verb pattern to his socks without any restriction; and he had such an attitude, as the youth had, like the one in the Whistler's mother.The trouble was himself, and that was the reason why he was apart from his fellows. The Duke was so religious that he paved special attention distortion to the High Church or Evangelical standpoin ts, standing outside of all the movements, missions, cults and crusades with indifference and disinterest. Moreover, he was religious In an intensely and Intensively? No paraphrasing here. Ay of his own. HIS family were very whereabouts It, but In a careful sense, that his mother said: â€Å"I am very anxious because it may affect his relations. )Len the middle of the night I woke from a dream full of whips and lariats as long as serpents, and runaway coaches and mountain passes, and wide, windy gallops over cactus fields, and I heard the old man in the next room crying, â€Å"Gee-up! † and â€Å"Whoa! † and trotting his tongue on the roof of his mouth. It was the first time I had stayed in grandpa's house. The floorboards had squeaked like mice as I climbed into bed, and the mice between the walls had creaked Like wood as though another violators was walking on them.It was a mild summer night, but curtains had flapped and branches eaten against the window. I had pull ed the sheets over my head, and soon was roaring and riding in a book. â€Å"Whoa there, my beauties! † cried grandpa. His voice sounded very young and loud, and his tongue had powerful hooves, and he made his bedroom Into a great meadow. I thought I would see If he was Ill, or had set his bedclothes on fire, for my mother had said that he lit his pipe under the blankets, 1 OFF through the darkness to his bedroom door, brushing against the furniture and upsetting a candlestick with a thump.When I saw there was light in the room I felt righted, and as I opened the door I heard grandpa shout, â€Å"Gee-up! † as loudly as a bull with a megaphone. He was sitting straight up in bed and rocking from side to side as though the bed were on a rough road and the knotted edges of the counterpane were his reins; his invisible horses stood in a shadow beyond the bedside candle. Over a white flannel nightshirt he was wearing a red waistcoat with walnut-sized brass buttons. The overf illed bowl of his pipe smoldered along his whiskers like a little, burning hayrick on a stick.At the sight of me, his hands dropped room the reins and lay blue and quiet, the bed stopped still on a level road, he muffled his tongue into silence, and the horses drew softly up. â€Å"Is there anything the matter, grandpa? † I asked, though the clothes were not on fire. His face in the candlelight looked like a ragged quilt pinned upright on the black air and patched all over with goat-beards. (Taken from â€Å"A Visit to Grandpa ‘s† by Dylan Thomas) Late at night I woke from a strange dream full of strange things related to horses, serpents, coaches and mountains, and then listened to the old man shouting, â€Å"Go faster! And â€Å"Stop! † and making a kind of a sound with his tongue. As it was the first time I had stayed in grandpa's house, I noticed every single sound like the squeak of the floorboards when I climbed into bed or the mice inside the walls , they creaked as if there was somebody else there. Although the summer night was mild, the curtains had flapped and the windows were beaten by the branches. I covered my head with the sheets and shortly I was roaring and riding in a book. Poor paraphrasing â€Å"Stop, my beauties! â€Å", shouted grandpa.His voice was like a young man's voice while his ensue made the sound of the hooves, and his bedroom was like a great meadow. I thought I would see if he was k as my mother told me he had the habit to smoke his pipe under the blankets and may be bedclothes set on fire, so I should run to his help if I smelt smoke in the night. I walked silently towards his bedroom, touching the furniture and threw a candlestick with a bump. There was light in his bedroom and I fleet frightened but when I opened the door I could hear grandpa shouting, â€Å"Go faster! † in such a loud voice as he could.He was sitting in bed rocking from side to did as the bed were a road full of wells and h e was holding the imaginary reins while his invisible horses rose behind the bedside candle. Besides his pajamas, he was wearing a red waistcoat with brass buttons. His overfilled pipe was burning along his beard. When he saw me, his hands laid blue and quiet, dropping the reins, the bed stopped its movement, he stopped the noise with his tongue and the horses arrived softly. â€Å"Is everything k, grandpa? â€Å", I asked, despite there was no fire on the bedroom. Under the candlelight, his face looked like an old cover all patched with goat beards.

Atoms, Molecules, & Elements

Atoms are the smallest entities which resemble the properties of an element and cannot be broken down into smaller parts. Molecules are formed when two or more atoms are combined. This formation can happen in a variety of ways. When two oxygen atoms join O2 is formed, and when three oxygen atoms join O3 or ozone is formed. Both of these have different properties. Different atoms can also combine to form molecules. Hydrogen combines with sulfur to form H2S and hydrogen and oxygen also combine to form H2O.Dmitri Mendeleev’s Periodic table is based on atomic weight, whereas, the modern periodic table keeps the atomic number as the base. An atomic table arranges elements from left to right in a row with the atomic number and properties gradually changing. The elements on the next row will actually exhibit similar properties as the ones above or below it. This provides an example of the periodicity nature of the elements. The columns of different elements in a period have the same or very similar properties. The properties of the elements change gradually as the columns move down through the periodic table.Atoms in similar families, such as H2S and H2O, exhibit both similar properties and molecular structure. This shows periodicity in both the molecules and the individual atoms. Alkali metals contain a single electron in their outer shell rendering them highly reactive. This allows them to be ready to donate this single electron to form molecules with substances like water. Halogens are also extremely reactive containing seven electrons in their outer shell. Similar to alkali metals, halogens need only one electron in their outer shell to become stable.The reactivity of an element increases the when the number of outer shell electrons is closer to one or seven. Elements that contain eight electrons in their outer shell exhibit little or no reactivity. Alkali metals are the elements found in group one of the periodic table. Mixing these metals with water creat es a strong base used to neutralize acids. An example of an alkali metal is sodium (Na). Sodium contains one free electron to donate to form instant bonds like NaCl. Chlorine (Cl) is an example of a halogen. Chlorine requires one single electron to make eight electrons in its’ outer shell.Ultimately the high reactivity of alkali metals and halogens are a result of their unstable electronic configuration in the outer shell. In contrast, noble gases tend to be non-reactive because these elements have stable electronic configurations in their outer shell. Helium, for example, has two electrons and neon has eight electrons in the outer shell. These elements do not normally react with other elements. Molecules from atoms in similar families, such as H2S and H2O, have the same type of molecular shape and structure.Sulfur is less electronegative than oxygen making the hydrogen-sulfur bond less polar than the hydrogen-oxygen bond. Due to this difference in polarity, the molecules of H2S tend to remain in a gaseous state. In contrast, the polarity between hydrogen and oxygen keeps the molecules of H2O together in a liquid state. This phenomenon is known as electrostatic attraction which is stronger in H2O molecules and weaker in H2S molecules. The electronic structure of atoms refers to the way electrons are arranged around the nucleus.Four quantum numbers describe this structure and define the position of an electron in the electronic structure of the atom. These numbers illustrate the structure and arrangement of electrons. This can also be defined as a wave function showing the probability of finding an electron in a point in space. Electronic configuration is important for chemists in understanding how and why certain elements react with other elements. This method is much simpler than the quantum model and allows chemists to predict how certain elements will react sometimes before the chemical reaction has taken place.Chemists can then theorize a reaction b ased on this electronic structure. Chemists can also use knowledge of the electronic structure of atoms to predict how elements will bond. They can determine whether the bond will be an electrochemical bond, a covalent bond, or a coordinate bond, etc. This also helps in explaining how certain elements will behave. Diagrams illustrating the energy level of elements also aid chemists but electronic configuration is a more preferred and simpler method for chemists to use.

Gay and Lesbian essays

Gay and Lesbian essays Adoption has long been a way for a loving family who cannot have children on their own, or a family with some extra love to give to have children. Today, adoption has taken a turn for the worse, Gay and Lesbian couples who of course cannot children are adopting kids. I see this as one of our nations number one problems. What kind of message are these kids getting? That homosexuality is all right. If this continues America will have a group of children running around with deviant behavior hardwired into their mind. Gay and Lesbian adoption must end for the sake of the children, for the sake of moral decency, and for the sake of the United States of America. Children in foster homes and orphanages have enough problems without have to deal with having homosexual parents. Other children and adult for something that they cannot control will persecute them, but their parents can. Even if they attend church they will not get the main Christian value of family. The biggest problem of all is that they might end up thinking that homosexuality is OK or even good, and that is just terrible. All children need the influence of a mother and father (Gay Parent online Magazine). Unfortunately, some children are not able to receive this because of death, divorce, or abandonment, but some just miss out on this because of two greedy homosexuals who what to have their cake and eat it two. The safety of the children is also in question when kids are placed with homosexuals. Forty percent of child molesters are homosexual, and they only represent ten percent of the population (Statistics website). This fact alone should make anyone want to outlaw homosexual adoptions. Also one of the nations foremost psychologist's Dr. Laura Schlessinger says that same sex parenting in "despicable" and "a huge portion of the male homosexual populace is predatory on young boys"(Newsweek 52). The most obvious reason homosexuals ...