What Are Quadratic Functions

In algebra, quadratic functions are any form of the equation y ax2   bx   c, where a  is not equal to 0, which can be used to solve complex math equations that attempt to evaluate missing factors in the equation by plotting them on a u-shaped figure called a parabola.  The graphs of quadratic functions are parabolas; they tend to look like a smile or a frown. Points Within a Parabola The points on a graph represent possible solutions to the equation based on high and low points on the parabola. The minimum and maximum points can be used in tandem with known numbers and variables to average the other points on the graph into one solution for each missing variable in the above formula. When to Use a Quadratic Function Quadratic functions can be highly useful when trying to solve any number of problems involving measurements or quantities with unknown variables. One example would be if you were a rancher with a limited length of fencing and you wanted to fence in two equal-sized sections creating the largest square footage possible. You would use a quadratic equation to plot the longest and shortest of the two different sizes of fence sections and use the median number from those points on a graph to determine the appropriate length for each of the missing variables. Eight Characteristics of Quadratic Formulas Regardless of what the quadratic function is expressing, whether it be a positive or negative parabolic curve, every quadratic formula shares eight core characteristics. y  Ã‚  ax2  Ã‚  bx  Ã‚  c, where  a  is not equal to 0The graph this creates is a parabola -- a u-shaped figure.The parabola will open upward or downward.A parabola that opens upward contains a vertex that is a minimum point; a  parabola that opens downward contains a vertex that is a maximum point.The domain of a quadratic function consists entirely of real numbers.If the vertex is a minimum, the range is all real numbers greater than or equal to  the  y-value. If the vertex is a maximum, the range is all real numbers less than or equal to the  y-value.An axis of symmetry (also known as a line of symmetry) will divide the parabola into mirror images. The line of symmetry is always a vertical line of the form x n, where n is a real number, and its axis of symmetry is the vertical line x 0.The x-intercepts are the points at which a parabola intersects the x-axis. These points are also known as zeroes, roots, solutions, and solution sets. Each quadratic function will have two, one, or no x-intercepts. By identifying and understanding these core concepts related to quadratic functions, you can use quadratic equations to solve a variety of real-life problems with missing variables and a range of possible solutions.

The Role of the Watch in William Faulkners A Rose for Emily

The Role of the Watch in William Faulkners A Rose for Emily Even the casual reader of William Faulkner will recognize the element of time as a crucial one in much of the writers work, and the critical attention given to the subject of time in Faulkner most certainly fills many pages of criticism. A goodly number of those pages of criticism deal with the well-known short story, A Rose for Emily. Several scholars, most notably Paul McGlynn, have worked to untangle the confusing chronology of this work (461-62). Others have given a variety of symbolic and psychological reasons for Emily Griersons inability (or refusal) to acknowledge the passage of time. Yet in all of this careful literary analysis, no one has discussed one†¦show more content†¦She resists change because for her change will alw ays involve loss. She must prevent time from passing if she is to hold on to what matters to her. Her desire to keep her life from changing is further evidenced by her reluctance to have her fathers body removed and buried and by her refusal to a llow str eet numbers to be attached to the door of her beloved family home. The extreme example of her need to control change, to keep time in her pocket, is her poisoning Homer and placing him carefully in the upstairs room. The townspeople have joined forces with the representatives of her own family and are on the verge o f separating her from him, just as earlier they separated her from her father. Homer alive and active in her life has become too serious an affront to those around her. The only way she can keep him with her is to arrest his activity and to suspend his vi tality. As a corpse, this Yankee outsider will be less offensive to the sensibilities of the closed Southern community. (Evidence exists of the towns complicity in Homers murder. Their knowledge of Emilys purchase of the arsenic, followed by Homer Barrons disappearance and the subsequent odor surrounding the Grierson house indicate at least some level of community awareness of what had happened.) More important for Emily, however, Homer will now stay fixed as a part of her life forever. The consequence of Emilys attempt to keep things from changing is that time for her loses itsShow MoreRelatedEssay on Oh Who Will Protect Poor Emily?1027 Words   |  5 PagesIn Faulkner’s â€Å"A Rose for Emily†, there is a constant theme of protection for Emily Grierson, because she was a woman living in the south after the civil war and the requirements that were placed on women enable to be honorable. That is to say that, women needed to be protected by the men of the community during that time in history and women’s actions were constantly under watch to see if a woman was honorable and worthy of protection or not. Within the story, there are many instances in which thisRead MoreWilliam Faulkner s Writing Style1486 Words   |  6 PagesWilliam Faulkner, who lived his entire live in Mississippi, was a Nobel Prize- winning writer who became well-known for his work set in the American South. After dropping out of high school and working in multiple different fields, he was commissioned as a major in the Hawaiian Territorial Forces. Faulkner later enrolled in the University of Mississippi and began his writing career; writer Sherwood Anderson gave Faulkner advice, stating that he should write about his native home of Mississippi. Read MoreThe Search for Time in Yoknapatawpha County1908 Words   |  8 Pagesyear and the time period of the story. Furthermore, in the short story â€Å"A Rose for Emily† by William Faulkner, the setting is a source of conflict. The narrator’s of the story, the town’s people, have an unknown entity, but because the story shifts between time periods and settings, the reader acquires different points of view from the same conflict. The theme of tradition and change in the short story â€Å"A Rose for Emily†, is enhanced by time, the southern gothic literature, and the post Civil WarRead MoreAnalysis of the Short Story A Rose for Emily Essay1038 Words   |  5 PagesThe reason I c hose to analyze â€Å"A Rose for Emily† by William Faulkner is because I am a lover of suspense and terror. The story totally caught my attention because the general tone is one of violence, gloom, and terror. The setting also plays an important role because it gives the reader a better understanding of the different situations. The main character, Emily, plays the role of a tragic figure that seems to be seen only from the outside. Sometimes people judge others from the outside, but theyRead MoreWilliam Faulkners A Rose for Emily1600 Words   |  7 Pages William Faulkners A Rose for Emily  is set in the small southern town of Jefferson during the early decades of the twentieth century . At this time, vast and cardinal changes were being made by the upcoming new south to conceal and move from the horrid truths that were a part of the towns history. In lieu of this, Jefferson was at a turning point in which they were having difficulty coming to terms with these cha nges . Integrating Faulkners use of character and symbols with other sourcesRead MoreLiterary Elements in A Rose For Emily Essay1695 Words   |  7 PagesEscaping Loneliness In A Rose for Emily, William Faulkners use of setting and characterization foreshadows and builds up to the climax of the story. His use of metaphors prepares the reader for the bittersweet ending. A theme of respectability and the loss of, is threaded throughout the story. Appropriately, the story begins with death, flashes back to the past and hints towards the demise of a woman and the traditions of the past she personifies. Faulkner has carefully crafted a multi-layeredRead MoreRose for Emily1559 Words   |  7 PagesEscaping Loneliness In A Rose for Emily, William Faulkners use of setting and characterization foreshadows and builds up to the climax of the story. His use of metaphors prepares the reader for the bittersweet ending. A theme of respectability and the loss of, is threaded throughout the story. Appropriately, the story begins with death, flashes back to the past and hints towards the demise of a woman and the traditions of the past she personifies. Faulkner has carefully crafted a multi-layeredRead More The Nature of Time and Change in William Faulkners A Rose for Emily1763 Words   |  8 PagesThe Nature of Time and Change in William Faulkners A Rose for Emily In A Rose for Emily, William Faulkners use of language foreshadows and builds up to the climax of the story. His choice of words is descriptive, tying resoundingly into the theme through which Miss Emily Grierson threads, herself emblematic of the effects of time and the nature of the old and the new. Appropriately, the story begins with death, flashes back to the near distant past and leads on to the demise of a woman andRead More Role of Women in Hemmingways Hills like White Elephants, Lawrences The Horse Dealers Daughter and2273 Words   |  10 PagesRole of Women in Hemmingways Hills like White Elephants, Lawrences The Horse Dealers Daughter and Faulkners A Rose for Emily The role of women in society is constantly questioned and for centuries women have struggled to find their place in a world that is predominantly male oriented. Literature provides a window into the lives, thoughts and actions of women during certain periods of time in a fictitious form, yet often truthful in many ways. Ernest Hemmingways Hills like White ElephantsRead MoreAnalysis of A Rose for Emily, by William Faulkner and The Yellow Wallpaper, by Charlotte Perkins Gilman2621 Words   |  11 Pages In the short stories â€Å"A Rose for Emily† written by William Faulkner and â€Å"The Yellow Wallpaper†Ã¢â‚¬  written by Charlotte Perkins Gilman, the protagonists experience mental illness, loneliness, feelings of being in control of their lives, and feelings of being insane. Both main characters struggle against male domination and control. The two stories take place in the late 1800’s - early 1900’s, a time where men’s place in society was supe rior to that of women. Each story was written from a different

Walking Groups

Question: Write an article onillustrating the benefits of walking groups for the individuals with poor health. Answer: The article deals in illustrating the benefits of walking groups for the individuals with poor health. The article helps in understanding the socio-economic indicators in order to understand the barriers that could hamper with the involvement of the individuals with the walking. The authors have implemented the qualitative approach in order to make the readers better understand about the benefits of walking groups being facilitated by the photo elicitation process. The article has been able to determine both the positive and negative aspects of the individual experiences related to the exercises referral scheme. While, walking groups has been able to influence most of the individuals to participate in the healthier activities, a few of them do not like socializing (Hanson et al., 2016). Thus, the authors have illustrated about an exercise referral scheme that could be effective in engaging new walkers from the disadvantage groups into walking interventions. Authors Argument The authors, in their article, have illustrated on the grim fact that people consider gym, medical attention, and other modern and expensive techniques, to be useful in healing their serious ailments. The people have a tendency to join the group with the expectation of earning an experience, which however, has no close connection with the thought of improving the health conditions. To belong, and to become a part of the group of the other fellow beings, is a significant factor that motivates the people. However, after joining the social group, these individuals realize the benefits related with the physical activity of walking. Critique The most important point in the writing that immediately strikes a reader is the lack of awareness among the public regarding the benefits of walking. The journal clearly shows how a huge number of people were unaware and absolutely ignorant about the benefit of walking. According to Nutsword et al., (2013), the casual approach and indifference to walking could not be more striking, when an interviewee reported bluntly that he usually does not go out for a walk. His I pad, TV, luxurious house are providing him with all the necessary happiness and comfort he requires in life. The writer not only talks of walking as an important physical activity that should be appreciated, but he also emphasizes the importance of the same, for mental bliss. According to Mitchell et al., (2013), group walking, in an alienated, tech-obsessed world, turns out to be an activity that promoted socialization with other fellow beings, deep interaction with nature, and a source of refreshment and amusement for the walkers. One of the most unique and commendable aspects of the journal is that the writer focuses more on the mental health benefits of walking. Group walking helps in promoting mental health, by curing clinical depression, stress, hypertension, isolation and sleeplessness. The writer reminds the reader that it is important to go out of the door, explore the natural beauty of the beach, park, promenade, interact with nature, and to socialize with people of various classes. Suggestion The article lacks the illustration of the various theories related to the health behavior and health behavior change based on the characteristics of the individuals. According to Nutbeam Harris, (2004), the theory of health behavior helps in illustrating on the best practice interventions on the self-regulation skills and abilities of the individuals, which could help in improving the health conditions. The theory of health behavior utilizes the Social cognitive Theory, and hence examines and exploits the inter-relation between the environment and the human beings. Thus, the article should have been more effective to make the readers understand the health behavior of the individuals in a better way. Conclusion The article discusses about the importance of walking which could be useful in healing their serious ailments. The article has been able to determine both the positive and negative aspects of the individual experiences related to the exercises referral scheme. In this regard, group walking is required to be appreciated for the individuals to enjoy health benefits. It should be considered as an implication, which is participated in a social group requiring the mingling of people in the society. This process in the due course, help in refreshing the minds of the individuals. The participation in the process would itself enable the individuals to understand the physical health benefits where they could themselves would feel the motivation to continue participating on their own. Those who joined, admiring the idea of leisure walking, became aware of their own level of physical fitness, in comparison with that of the crowd, and could accordingly take steps to improve their physical health . References Astell-Burt, T., Mitchell, R. Hartig, T., (2014). The association between green space and mental health varies across the lifecourse. A longitudinal study. Journal of epidemiology and community health, 68(6), pp.578-583.Fry, D. Zask, A., (2016). Applying the Ottawa Charter to inform health promotion programme design. Health promotion international, p.daw022.Grembowski, D., (2015). The practice of health program evaluation. Sage Publications.Hanson, S., Guell, C. Jones, A., (2016). Walking groups in socioeconomically deprived communities: A qualitative study using photo elicitation. Health place, 39, pp.26-33.Mitchell, R., (2013). Is physical activity in natural environments better for mental health than physical activity in other environments?. Social Science Medicine, 91, pp.130-134.Nutbeam, D., Harris, E. (2004). Theories on health behaviour and health behaviour change: individual characteristics. Theory in a nutshell.Nutsford, D., Pearson, A.L. Kingham, S., (2013). An ecolo gical study investigating the association between access to urban green space and mental health. Public health, 127(11), pp.1005-1011.

Antioxidant Activity of Mangrove free essay sample

All forms of life maintain a reducing environment within their cells. This reducing environment is preserved by enzymes that maintain the reduced state through a constant input of metabolic energy. Disturbances in this normal redox state can cause toxic effects through the production of peroxides and free radicals that damage all components of the cell, including proteins,  lipids, and  DNA. Oxidative stress occurs when free radicals, which are not neutralized by antioxidants, go on create more volatile free radicals and damage cell walls, vessel walls, proteins, fats and even the nucleus of our cells. A free radical or reactive species is any chemical species capable of independent existence possessing one or more unpaired electrons. Biological free radicals are thus highly unstable molecules that have electrons available to react with various organic substrates. The reactive species generally include ROS and RNS, though reactive chlorine species also part of the reactive species. Reactive oxygen species  (ROS) are chemically reactive molecules containing oxygen. Examples include  oxygen  ions  and  peroxides. ROS form as a natural byproduct of the normal metabolism of  oxygen  and have important roles in  cell signaling  and  homeostasis. Normally, cells defend themselves against ROS damage with  enzymes  such as  alpha-1-microglobulin,  superoxide dismutase,  catalases,  lactoperoxidase, glutathione peroxidase  and  peroxiredoxins. Small molecule antioxidants such as  ascorbic acid  (vitamin C),  tocopherol  (vitamin E),  uric acid, and  glutathione also play important roles as cellular antioxidants. Reactive Nitrogen Species (RNS)  are radical nitrogen-based molecules that can act to facilitate nitrosylation reactions. Reactive Nitrogen Species (RNS) include nitrous oxide, peroxynitrate, nitrosyl cation, nitrous acid, etc. Many free radicals are the result of naturally occurring processes such as oxygen metabolism and inflammatory processes. For example, when cells use oxygen to generate energy, free radicals are created as a consequence of ATP production by the mitochondria. Exercise can increase the levels of free radicals as can environmental stimuli such as ionizing radiation (from industry, sun exposure, cosmic rays, and medical X-rays), environmental toxins, altered atmospheric conditions (e.g. , ozone and nitrous oxide (primarily from automobile exhaust). Lifestyle stressors such as cigarette smoking and excessive alcohol consumption are also known to affect levels of free radicals. Some of the important reactive species are superoxide (O2. –), shydrogen peroxide (H2O2), hydroxyl radicals (OH. ), nitric oxide (NO. ), etc. An extensive, highly effective group of protective agents and defense mechanisms referred to collectively as the  Antioxidant Defense System  (ADS), acts to regulate oxidative reactions. There are two types of antioxidant systems i. e.enzymatic and non enzymatic antioxidant system develop in plants. Enzymatic system includes superoxide dismutase, glutathione peroxidase, glutathione reductase, catalases, etc. These form the body’s endogenous defense mechanisms to help protect against free radical-induced cell damage. They require micronutrient cofactors such as  selenium, iron, copper, zinc, and manganese for their activity. Non-enzymatic system include such as  ascorbic acid  (Vitamin C), polyphenols  ,  tocopherols, etc. Vitamin C is the most important water-soluble antioxidant in extracellular fluids. Vitamin C helps to neutralize ROS in the water or aqueous phase before it can attack the lipids. Vitamin E is the most important lipid soluble antioxidant. It is important as the chain-breaking antioxidant within the cell membrane. It can protect the membrane fatty acids from lipid peroxidation. Vitamin C in addition is capable of regenerating vitamin E. Beta carotene and other carotenoids also have antioxidant properties. In human, some of the notable diseases caused due to oxidative stress include heart disease is the leading cause of death worldwide. Heart disease risk is raised by several factors including high  cholesterol  levels,  high blood pressure, cigarette smoking, and  diabetes (Sundararajan et al. , 2006; Tawaha et al. , 2007; Nanasombat and Teckchuen, 2009). These promote  atherosclerosis. Atherosclerosis refers to formation of hardened walls of the arteries that impairs blood flow to the heart and other vital organs. Cancer kills millions worldwide. Diet may be the cause for cancer in as much as 35% of all human cancers. Low antioxidant intake in diet may also be responsible. Low dietary intake of fruits and vegetables doubles the risk of most types of cancers. Pro-oxidants, or those who generate free radicals, stimulate cell division and these form the beginnings of mutagenesis and tumor formation. When a cell with a damaged DNA strand divides, it gives rise to disturbed and deformed clusters of cells that form the cancer. In addition, cigarette smoking and chronic inflammation lead to strong free radical generation that seems to be the reason for many cancers. The respiratory system is a well known target for free radical insult. This comes from endogenous factors as well as exposure to air pollutants and toxins, cigarette smoke etc. Recent studies suggest that free radicals may be involved in the development of pulmonary disorders such as  asthma. Antioxidants have been seen to reduce the development of asthmatic symptoms. Vitamin C, vitamin E, and  beta carotene supplementation has been associated with improved lung function. Free radicals can also damage nerves and the  brain. Formation of  cataracts  is believed to involve damage to lens protein by free radicals. This leads to opacity of the lens. Cataract  formation may be slowed with the regular consumption of supplemental antioxidants like vitamin E, vitamin C, and the carotenoids. Other diseases like Diabetes, Rheumatoid  arthritis  etc. are also associated with low antioxidant levels in blood. Several standard established antioxidant drugs such as butylhydroxytoluene (BHT) and rutin have been reported to be toxic to living cells (Madhavi et al, 1995, Bursal amp; Gulcin, 2011, Gocer et al, 2011). BHT drugs are known to be the most prevalent and approved antioxidant scavengers worldwide, have equally been reported to be toxic to the lungs, even at a lower concentration. As oxidative stress causes many human diseases, the use of natural antioxidants is intensively studied. Antioxidants are widely used in  dietary supplements  and have been investigated for the prevention of diseases such as cancer,  coronary heart disease  and even  altitude sickness. Plant contains a variety of phytochemical such as phenols, steroids, tannins, saponins, carbohydrates, etc having antioxidant activity that can be used for the removal of human diseases caused due to the oxidative stress. As part of their adaptation from marine life, terrestrial plants develop antioxidant system producing different phytochemicals such as  ascorbic acid  , polyphenols  and  tocopherols having antioxidant property. Mangrove plants are found to have medicinal values and have been used traditionally by local medical practitioners in worldwide. In nature, more than 65 species of mangrove plants, 18 species are found to be widely used by local medical practitioners in many countries like Africa, South East Asia, South America and Australia. These 12 species viz. Acanthus clicifolius, Aegiceras majus, Avicennia africana, A. marina, A. officinalis, Ceriops caudolleana, Exocoecaria agallocha, Kandelia rhecdi, Nypa fruticans, Rhizophora mangle, R. mcronata and Sonneratia caseolaris are used to cure some deeded diseases like leprosy, elephantiasis, tuberculosis, malaria, dysentery, ulcers and some skin diseases. Balsco et al,1976 and Banerjee and Gosh,1998 reported that 27 out of 65 species of mangrove are present in India respectively. The mangroves are the coastal tropical forest; grow in the intertidal deltaic areas, having higher salt concentration. Some species such as the Grey Mangrove can also tolerate the storage of large amounts of salt in their leaves – which are discarded when the salt load is too high. Mangroves can also restrict the opening of their stomata. This allows the mangrove to conserve its fresh water, ability vital to its survival in a saline environment. Mangroves are able to turn their leaves to reduce the surface area of the leaf exposed to the hot sun. This enables them to reduce water loss through evaporation. A distinctive feature of mangroves is their far-reaching, exposed roots. While these roots come in many different shapes and sizes, they all perform an important function – structural support in the soft soils. Some species of mangroves have pneumataphores, which are above-ground roots. These are filled with spongy tissue and peppered with small holes that offer structural support and allow oxygen to be transferred to the roots trapped below ground in the anaerobic (low oxygen) soils. The roots of many mangrove species are also adapted to stop the intake of a lot of the salt from the water before it reaches the plant. Some mangrove species have evolved to produce seeds that float. The tide acts as the method of dispersal to avoid crowding of young plants. Other mangrove species are viviparous. They retain their seeds until after it has germinated and a long, cylindrical propagule has formed. When it has matured to this stage, the parent tree drops it into the water, where it remains dormant until it finds the soil and is able to put out roots. Referring to the facts cited above the present study was designed with the following objectives. OBJECTIVES Selection of mangrove plants for antioxidant activity on the basis of their ethenomedicinal importance. 2. Preparation of mangrove plant extracts by successive extraction methods. 3. Phytochemical evaluation of the mangrove plant extracts. 4. Evaluation of antioxidant activity following in vitro assay techniques. Normally free radical formation is controlled naturally by various beneficial compounds known as antioxidants. When there is deficiency of these antioxidants damage due to free radicals can become cumulative and debilitating. Antioxidants are capable of stabilizing, or deactivating, free radicals before they attack cells. Some of the important reactive species and their biological effects are superoxide anion, hydrogen peroxide, peroxynitrite, hydroxyl radicals, etc. The free radical superoxide is generated from O2 by multiple pathways. They can be summarized into following categories, such as: i) NADPH oxidation by NADPH oxidase; ii) oxidation of xanthine or hypoxanthine by xanthine oxidase; iii) oxidation of reducing equivalents (e. g., nicotinamide adenine dinucleotide [reduced NADH], NADPH, and FADH2 [FAD reduced]) via the mitochondrial electron transport system; iv) autoxidation of monamines (e. g. , dopamine, epinephrine, and norepinephrine), flavins, and hemoglobin in the presence of trace amounts of transition metals; v) one-electron reduction of O2 by cytochrome P-450. Superoxide anion (O2-) is a reactive oxygen species that reacts quickly with nitric oxide (NO) in the vasculature. The reaction p roduces peroxynitrite and depletes the bioactivity of NO. This is important because NO is a key mediator in many important vascular functions including regulation of smooth muscle tone and blood pressure, platelet activation, and vascular cell signaling (Guzik et al, 2002). Peroxynitrite itself is a highly reactive species which can directly react with various biological targets and components of the cell including lipids, thiols, amino acid residues, DNA bases, and low-molecular weight antioxidants (ODonnell et al, 1999). Peroxynitrite can react directly with proteins that contain transition metal centers. Therefore, it can modify proteins such as hemoglobin, myoglobin, and cytochrone c by oxidizing ferrous heme into its corresponding ferric forms. Peroxynitrite may also be able to change protein structure through the reaction with various amino acids in the peptide chain. Hydrogen peroxide (H2O2) is a two-electron reduction state, formed by dismutation of †¢O2- or by direct reduction of O2. It is lipid soluble and thus able to diffuse across membranes. Hydrogen peroxide and superoxide radical (O2. –) by themselves are relatively less damaging, but they can form species such as hydroxyl radicals.

Military Aircraft Essays - Stealth Aircraft, Monoplanes,

Military Aircraft Thesis: Military aircraft has become more sophisticated in variety, effectiveness in war situations, and special maneuvering techniques in recent years. Military aircraft has become more sophisticated in variety, effectiveness in war situations, and special maneuvering techniques in recent years. With the advance of stealth technology, many new and very effective aircraft have been developed. The F-117A was used during Operation Dessert Storm and every plane came back without a scratch. The very expensive B-2 stealth bomber has never been used in actual war, but during testing it was a success. The Advanced Tactical Fighter program was started to make an aircraft that could supercruise, the ability to cruise at supersonic speeds, and didn't cost very much. The YF-22 and YF-23 were the first planes to accomplish this. With all the planes we know of, there are also top secret programs probably going on right now. A new fighter that has never been heard of before has been spotted. As John Welch, the assistant secretary of Air Force said, "Stealth gives us back that fundamental element of war called surprise" (Goodall 9). After it was found that aircraft could be very useful in war, it was used for large scale reconnaissance. Then people started to add bombs to aircraft and then airplanes started to become an essence of war. After World War 2, new bombers were developed with fast speed, and could travel far distances. They could also carry nuclear bombs and missiles. The use of the bomber aircraft then led to the fighter, which was equipped with guns and missiles. Helicopters were also found to be good strike aircraft. They were armed with cannons, machine guns, rockets, torpedoes, and a variety of missiles. Vertical takeoff made the helicopter an advantage. The first flight of the F-117A was in June of 1981 in Groom Lake test facility. The total cost for the development of the F-117A was just under two billion dollars, but it only cost $43 million to make each plane. It became operational in October of 1983 and was the first operational stealth aircraft ever built. The F-117A is a night attack plane powered by two, nonafterburning General Electric engines. F-117As were designed for first-strike capabilities and to be able to fly into any countries airspace undetected. The primary task of the F-117A is to break through enemy airspace, destroy high value targets, and return back unharmed. They were considered to first be used in several different tasks, but weren't used until Operation Dessert Storm where they did an excellent job. As Donald Rice, Secretary of the Air Force, said, "Everyone now agrees the F-117 was a real bargain" (9). During Operation Dessert Storm the F-117As were found out to be very successful. The war began on January 16, 1991 when the F-117A fighters entered the Iraqi airspace on their way to downtown Baghdad. There were 43 of them over the skies of Iraq and not one was lost even though they went against one of the most modern air-defense systems in the world. Operation Dessert Storm was the largest aerial bombing attack in war history. It was also the first time a stealth aircraft was used as a main weapon. On the first day of Desert Storm the Lockheed F-117As dropped sixty-two 2,000 pound bombs on Baghdad destroying the most critical targets of the Iraqi military, including the headquarters of the Iraqi air force. "We've seen that not only does stealth work, but that it puts fewer assets at risk and saves lives" (9), as Donald Rice said. The pilots of those F-117As flew through the hardest anti-aircraft missiles any pilot has ever flown through. When you think of stealth, most people probably think of B-2 stealth bomber, but most people don't realize that it hasn't even been used in a real war situation yet. In November of 1987 the Pentagon ordered the first four B-2s to be built for $2 billion. Each B-2 cost $437.4 million to build. After the military liked the bomber, they originally ordered 133 of them, then they cut back to 75 because of the deficit-reduction bill. Then, in 1992, the House of Representatives voted to buy only twenty, and later only 15 saying that 10 would be enough. With four General Electric

Entregar Conjugation in Spanish, Translation, and Examples

Entregar Conjugation in Spanish, Translation, and Examples The Spanish verb entregar means to deliver, to turn in or hand in, or to hand over. Entregar can also be used as a reflexive verb, entregarse, which means to turn yourself in or surrender. Entregarse can also mean to devote yourself or dedicate yourself to something. Entregar Conjugation Entregar is a regular -ar verb and follows the same conjugation pattern as verbs like usar and tratar; however, a spelling change is required in some of the conjugations. In order to maintain the hard g sound, a u should be added when the g is followed by the vowel e. For example, the first person preterite conjugation of entregar should be entreguà ©, with a u to create the hard g sound. (The combination ge by itself produces the soft g sound, like the English h.) This article includes the conjugations of entregar in the most frequently used verb tenses: present, past, conditional, and future indicative, the present and past subjunctive, the imperative mood, and other verb forms. Entregar Present Indicative Yo entrego I deliver Yo entregola tarea a tiempo. Tà º entregas You deliver Tà º entregas la carta personalmente. Usted/à ©l/ella entrega You/he/she delivers Ella entregalos pedidos de los clientes. Nosotros entregamos We deliver Nosotros entregamoslas llaves del apartamento. Vosotros entregis Youdeliver Vosotros entregisel ladrà ³n a la policà ­a. Ustedes/ellos/ellas entregan You/they deliver Ellos entreganel poder despuà ©s de las elecciones. Entregar Preterite Indicative In the preterite tense there is a spelling change only for the first person singular conjugation. Yo entreguà © I delivered Yo entreguà © la tarea a tiempo. Tà º entregaste You delivered Tà º entregaste la carta personalmente. Usted/à ©l/ella entregà ³ You/he/she delivered Ella entregà ³ los pedidos de los clientes. Nosotros entregamos We delivered Nosotros entregamoslas llaves del apartamento. Vosotros entregasteis Youdelivered Vosotros entregasteis el ladrà ³n a la policà ­a. Ustedes/ellos/ellas entregaron You/they delivered Ellos entregaron el poder despuà ©s de las elecciones. Entregar Imperfect Indicative The imperfect tense can be translated to English as was delivering or used to deliver. Yo entregaba I used to deliver Yo entregaba la tarea a tiempo. Tà º entregabas You used to deliver Tà º entregabas la carta personalmente. Usted/à ©l/ella entregaba You/he/she used to deliver Ella entregaba los pedidos de los clientes. Nosotros entregbamos We used to deliver Nosotros entregbamoslas llaves del apartamento. Vosotros entregabais Youused to deliver Vosotros entregabais el ladrà ³n a la policà ­a. Ustedes/ellos/ellas entregaban You/they used to deliver Ellos entregaban el poder despuà ©s de las elecciones. Entregar Future Indicative Yo entregarà © I will deliver Yo entregarà © la tarea a tiempo. Tà º entregars You will deliver Tà º entregars la carta personalmente. Usted/à ©l/ella entregar You/he/she will deliver Ella entregarlos pedidos de los clientes. Nosotros entregaremos We will deliver Nosotros entregaremoslas llaves del apartamento. Vosotros entregarà ©is Youwill deliver Vosotros entregarà ©is el ladrà ³n a la policà ­a. Ustedes/ellos/ellas entregarn You/they will deliver Ellos entregarn el poder despuà ©s de las elecciones. Entregar Periphrastic  Future Indicative   To conjugate the periphrastic future, use the present indicative conjugation of the verb ir (to go), the preposition a, and the infinitive entregar. Yo voy a entregar I am going to deliver Yo voy a entregar la tarea a tiempo. Tà º vasa entregar You aregoing todeliver Tà º vasa entregar la carta personalmente. Usted/à ©l/ella vaa entregar You/he/she isgoing todeliver Ella vaa entregar los pedidos de los clientes. Nosotros vamosa entregar We aregoing todeliver Nosotros vamosa entregar las llaves del apartamento. Vosotros vaisa entregar Youaregoing todeliver Vosotros vaisa entregar el ladrà ³n a la policà ­a. Ustedes/ellos/ellas vana entregar You/they aregoing todeliver Ellos vana entregar el poder despuà ©s de las elecciones. Entregar Present Progressive/Gerund Form The gerund or present participle is a verb form that can be used as an adverb or to create progressive verb forms like the present progressive. Present Progressive ofEntregar est entregando Is delivering Ella est entregando los pedidos de los clientes. Entregar Past Participle The past participle is a verb form that can be used as an adjective or to form perfect tenses like the present perfect. Present Perfect of Entregar ha entregado Has delivered Ella ha entregado los pedidos de los clientes. Entregar Conditional Indicative The conditional tense is used to talk about possibilities. Yo entregarà ­a I would deliver Yo entregarà ­a la tarea a tiempo si la hubiera hecho. Tà º entregarà ­as You would deliver Tà º entregarà ­as la carta personalmente, pero no tienes tiempo. Usted/à ©l/ella entregarà ­a You/he/she would deliver Ella entregarà ­alos pedidos de los clientes, pero no tiene las direcciones. Nosotros entregarà ­amos We would deliver Nosotros entregarà ­amoslas llaves del apartamento si nos mudramos. Vosotros entregarà ­ais Youwould deliver Vosotros entregarà ­ais el ladrà ³n a la policà ­a si supierais dà ³nde se esconde. Ustedes/ellos/ellas entregarà ­an You/they would deliver Ellos entregarà ­an el poder despuà ©s de las elecciones, pero no se conocen los resultados. Entregar Present Subjunctive The spelling change - add a u for the hard g sound- occurs in all of the present subjunctive conjugations. Que yo entregue That I deliver La maestra quiere que yo entregue la tarea a tiempo. Que tà º entregues That you deliver La directora pide que tà º entregues la carta personalmente. Que usted/à ©l/ella entregue That you/he/she deliver El gerente espera que ella entregue los pedidos de los clientes. Que nosotros entreguemos That we deliver El propietario quiere que nosotros entreguemos las llaves del apartamento. Que vosotros entreguà ©is That you deliver La và ­ctima pide que vosotros entreguà ©isel ladrà ³n a la policà ­a. Que ustedes/ellos/ellas entreguen That you/they deliver El gobernador quiere que ellos entreguen el poder despuà ©s de las elecciones. Entregar Imperfect Subjunctive There are two different ways of conjugating the imperfect subjunctive: Option 1 Que yo entregara That I delivered La maestra querà ­a que yo entregara la tarea a tiempo. Que tà º entregaras That you delivered La directora pedà ­a que tà º entregaras la carta personalmente. Que usted/à ©l/ella entregara That you/he/she delivered El gerente esperaba que ella entregara los pedidos de los clientes. Que nosotros entregramos That we delivered El propietario querà ­a que nosotros entregramoslas llaves del apartamento. Que vosotros entregarais That you delivered La và ­ctima pedà ­a que vosotros entregaraisel ladrà ³n a la policà ­a. Que ustedes/ellos/ellas entregaran That you/they delivered El gobernador querà ­a que ellos entregaran el poder despuà ©s de las elecciones. Option 2 Que yo entregase That I delivered La maestra querà ­a que yo entregase la tarea a tiempo. Que tà º entregases That you delivered La directora pedà ­a que tà º entregases la carta personalmente. Que usted/à ©l/ella entregase That you/he/she delivered El gerente esperaba que ella entregase los pedidos de los clientes. Que nosotros entregsemos That we delivered El propietario querà ­a que nosotros entregsemoslas llaves del apartamento. Que vosotros entregarais That you delivered La và ­ctima pedà ­a que vosotros entregaseisel ladrà ³n a la policà ­a. Que ustedes/ellos/ellas entregasen That you/they delivered El gobernador querà ­a que ellos entregasen el poder despuà ©s de las elecciones. Entregar Imperative The imperative mood is used to give commands. Notice that some of the imperative conjugations require a spelling change for the hard g sound. Positive Commands Tà º entrega Deliver!  ¡Entrega la carta personalmente! Usted entregue Deliver!  ¡Entregue los pedidos de los clientes! Nosotros entreguemos Let's deliver!  ¡Entreguemos las llaves del apartamento! Vosotros entregad Deliver!  ¡Entregad el ladrà ³n a la policà ­a! Ustedes entreguen Deliver!  ¡Entreguen el poder despuà ©s de las elecciones! Negative Commands Tà º no entregues Don't deliver!  ¡No entregues la carta personalmente! Usted no entregue Don't deliver!  ¡No entregue los pedidos de los clientes! Nosotros no entreguemos Let's not deliver!  ¡No entreguemos las llaves del apartamento! Vosotros no entreguà ©is Don't deliver!  ¡No entreguà ©is el ladrà ³n a la policà ­a! Ustedes no entreguen Don't deliver!  ¡No entreguen el poder despuà ©s de las elecciones!

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Density Functional Theory (DFT): Literature Review Theoretical Background and Literature Review 2.1 Density Functional Theory This section covers basics about Density Functional Theory (DFT), which is the theoretical method behind our investigations. For those who are interested in a much more deep knowledge about the DFT we refer to textbooks such as [29] and [30]. 2.1.1 History of Density Functional Theory To get precise and accurate results from both theoretical and computational methods, the scale of physical phenomena must be well defined. In physics and material science the relevant scales of matter are time and size. In computational material science, for the multiscale understanding in both time and size scale the smallest relevant scale of atomic interactions are best described by ab initio techniques. 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The major development of ab initio methods with practical applications took place when many electron interactions in a system was possible to be approximated using a set of one electron equations (Hartree-Fock method) or using density functional theory In 1927, Thomas [32] and Fermi [33] introduce a statistical model to compute the energy of atoms by approximate the distribution of electrons in an atom. Their concept was quite similar to modern DFT but less rigorous because of the crucial manybody electronic interaction was not taken into account. 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Some years later, to deal with antisymmetry of the electron system, his students Fock [36] and Slater[37], separately published self-consistent functions taking into account Pauli exclusion principals and they expressed the multi-electron wavefunction in the form of single-particle orbitals namely Slater-determinants. Since the calculations within the Hartree-Fock model are complicated it was not popular until 1950s. The fundamental concepts of density functional theory were proposed by Hohenberg and Kohn in their very well known paper in the year 1964 [38]. The main idea was trying to use the electron density instead of complex and complicated wavefunction. A wavefunction contains 3N variables, where N is the number of electrons and each electron has 3 spatial degrees of freedom. In contrast to that electron density contains only 3 variables. Therefore, the implementation of the electron density with 3 variables will be more easy to handle than 3N wavefunction variables. 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Then the Hamiltonian takes the form: NMM ZnZm in 22 |Rn − Rm| i=1 n=1 n,m=1;n =m 1 1 ˆ H = − 2 2 − + (2.8) j= MNMZn − + |ri − Rn||ri − rj| n=1 i=1 i,j=1;i 2.1.3 Born-Oppenheimer Approximation It is clear that forces on both electrons or nuclei is in the same order of magnitude because of their electric charge. Therefore, the expected momen 1 tum changes due to that forces must be the same. However electrons are much smaller than nuclei (e.g. even for Hydorgen case nuclei nearly 1500 times larger than an electron) they must have higher velocity than nuclei. One can conclude that electrons will very rapidly adjust themselves to reach the ground state configuration if the nuclei start moving. Born and Oppenheimer [40] published their work in 1927, they simply separated the nuclear motion from electronic motion which is now known as the Born-Oppenheimer approximation. Therefore, while solving the Hamiltonian Equation in (2.8) one can simply assume nuclei as stationary and solve the electronic ground state at first then calculate the energy of the system in that configuration and solve the nuclei motion. Then the separation of electronic and nuclear motion leads to an separation of the wavefunctions ÃŽ ¨ = ψφ of electrons and nuclei, respectively. Via the separation one can treat the nuclear motion externally by not in cluding the Hamiltonian and the â€Å"electronic† Hamiltonian can be written as: Hˆe = Tˆe + Vˆen + Vˆee (2.9) Solving the equation (2.9), one can get the total energy of the ground state of the system, which can be defined as: E0 = ψ0|He|ψ0 + Vnn (2.10) where E0 is the ground state total energy of the system and ψ0 is the eigenfunction of the electronic ground state. 2.1.4 Hohenberg-Kohn Theorem However, the Hamiltonian in Equation (2.9) is quite complicated to solve for realistic systems due to the high number of electrons and especially the term Vee makes it impossible to solve the problem exactly. Therefore, instead of solving the many-body wavefunctions, Hohenberg-Kohn deal with that problem by reducing it to the electron density Ï (r). This approach makes the fundamentals of DFT. According to Hohenberg and Kohn, the total energy of the system can be defined via the electron density as E = E[Ï (r)] and it will be the minimum for the ground state electron distribution, namely Ï 0(r). Therefore, the exact theory of many-body systems reduced to the electron density that can be defined as: Ï (r)= d3 r2d3 rN |ψ(r1, rN )|2 (2.11) and has to obey the relation: Ï (r)d3 r = N (2.12) where N is the total number of electrons in the system. One can also summarize the HK theorem in the form of the two main theorems, Theorem I : The external potential vext(r), which is the potential energy generated by the nuclei, can be determine from the ground state electron density Ï 0(r). Then Hamiltonian will be fully defined, also the wavefunction for the ground state will also be known. Theorem II : E0,the ground state total energy of the system with a particular vext will be the global minimum when Ï  = Ï 0. From the perspective of these two theorems one can write down the total electronic energy as: E[Ï ]= Te[Ï (r)] + Ï (r)vext[Ï (r)] + EH [Ï (r)] + Exc[Ï (r)]d3 r (2.13) One can also add the kinetic energy of the electrons T − e[Ï (r)], the classical Coulomb interaction (or Hartree interaction) between electrons EH [Ï (r)] and the remaining complex non-classical electron exchange correlations Exc[Ï (r)] into an universal functional FHK [Ï (r)]: E[Ï ]= FHK [Ï ]+ Ï (r)vext[Ï (r)]d3 r (2.14) The remaining will be to apply the variational principle to extract the ground state energy ÃŽ ´E[Ï (r)] |Ï =Ï 0 = 0 (2.15) ÃŽ ´Ã (r) 2.2 Kohn-Sham Equations However, the Equation (2.14) does not give an accurate solution. In that point, Kohn and Sham reformulated the current approach and introduced a new scheme by considering the orbitals by mapping the fully interacting electronic system onto a fictitious system of non-interacting quasi particles moving in an effective potential.The Kohn-Sham equations solution can be written as: ˆ HKSψi = iψi (2.16) where the Hamiltonian is HˆKS =[− 1 2 + Veff (r)] (2.17) 2 Therefore, the problem of finding the many-body Schr ¨odinger equation is now replaced by solving single particle equations. Since the KS Hamiltonian is a functional of just one electron at the point r then the electron density can be defined according to HK theorem: occ. Ï (r)= |ψi(r)|2 (2.18) i=1 Besides, kinetic energy term and the classical Coulomb interaction energy of the electrons can be define as: N 1 d3 Te = − r|ψi(r)|2 (2.19) 2 i=1 1 Ï (r)Ï (r ) EH [Ï ]= d3rd3 r(2.20) 2 |r − r | Then the Hohenberg-Kohn ground state energy cn be written according to Kohn-Sham approach: N ÃŽ ´Exc EKS = i − EH [Ï ]+ Exc − (2.21) ÃŽ ´Ã (r) i i are the one electron energies and are coming from the results of KS equations results, however it has low physical meaning. The most significant term in the Equation (2.20) is the last term. which is the exchange correlation term that contains all the many-body interactions of exchange and interactions of the electrons. One can also write down it as in the form of Hohenberg-Kohn universal functional from the equation: Exc[Ï ]= FHK [Ï ] − (Te[Ï ]+ EH [Ï ]) (2.22) The total ground state energy can be obtained from EKS in Equation (2.21). Since it contains only the electronic energy, the total ground state energy of the system is calculated by adding the nuclei-nuclei repulsion term: E0(R1, , RM )= i − EH [Ï 0]+ Exc[Ï 0] − vxcÏ 0dr + Vnn(R1, , RM ) (2.23) where E0 is the total ground state energy for a given atomic configuration (R1, , R2). Therefore, the total energy depend on ionic positions that is actually depends on the volume and cell shape, so one can easily compute the ground state structure by minimizing the total energy. Also one can find the force acting on the particular atom, say atom A, by taking the derivative of the energy with respect to ionic position of A: ÃŽ ´E0(R1, .., RM ) FA(RA) = (2.24) ÃŽ ´RA which also shows the total energy dependence on atomic positions. 2.3 Calculating the Exchange-Correlation Energy The derived and brieà ¯Ã‚ ¬Ã¢â‚¬Å¡y explained KS equations from the fundamentals of all modern DFT calculations today. The most important point in the solution of KS equations are the exchange-correlation functional Exc which also determines the quality of the calculation. There are two well known approximation methods to get the exchange correlations: local density approximation (LDA)[39] and generalized gradient approximation (GGA)[41, 42]. 2.3.1 Local Density Approximation The local density approximation starts with a very simple approximation that, for regions of material where the charge density is slowly varying, the exchange-correlation energy at that point can be considered as the same as for a local uniform electron gas of the same charge density. In that case one can write the Exc as: Exc = Ï (r) xc(r) (2.25) where xc(r) is the exchange correlation energy per electron in an homogenous electron gas of density Ï (r). Even though the approximation is seemingly simple it is suprisingly accurate. However, it also has some drawbacks such as under-predict on of ground state energies and ionisation, while overpredicting binding energies as well as slightly favouring the high spin state structures and does not work fine for some systems where the charge density is rapidly changing. 2.3.2 Generalized Gradient Approximation Knowing the drawbacks of LDA the most logical step to go beyond LDA is not to limit oneself to the information about the charge densitiy Ï (r) at a particular point r, but also adding the information about the gradient of the charge density Ï (r) to be able to take into account the unhomogeneous density in the system. Then one can write the exchange correlation energy as : Exc[Ï ]= f(Ï , Ï )dr (2.26) That way of description leads to an improvement over LDA, nevertheless in some systems LDA still works better. There also several different parameterizations of GGA while in LDA its only one. In GGA some of these parameterizations are semi-emprical, in that experimental data (e.g. atomization energies) is used in their derivation. Others are found entirely from first principles. A commonly used functional is the PW91 functional, due to Perdew and Yang [43, 44] and most commonly used today is PBE [45, 46] by Perdew, Burke and Ernzerhof. 2.4 Ultra-Soft Pseudopotentials and the Projector-Augmented Wave Method In the previous section, the calculation of Exc is described. Nevertheless this is not the single sensitive point of DFT calculations. The other point is the treatment of the electron-nuclei interaction. There are several available methods that describes the electron-nuclei interaction, but the most effective

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Since I am not a fan of viewing blood, and the violent actions that causes it; I decided to watch a movie in which the violence is less grotesque. The movie that I chose to watch was â€Å"Harry Potter and the Chamber of Secrets.† I chose this movie because I have recently read that the children’s book series Harry Potter has been rated amongst the most violent books meant for young readers.  Ã‚  Ã‚  Ã‚  Ã‚   If you look at â€Å"Harry Potter† through a uses and gratifications perspective, children would most likely watch the first â€Å"Harry Potter† for entertainment, but continue to follow the series out of curiosity. Since â€Å"Harry Potter† is an ongoing series that is continually publicized by the media; more children want to know what it is about, so therefore in order to ease their curiosity they watch the movie. The more a child watches of â€Å"Harry Potter† the more of a Harry Potter fan he or she becomes. Since Harry Potter is now becoming a role model for these kids, they will eventually start to play Harry Potter, and most likely mimic what they see in the movies. Most of the scenes in the â€Å"Harry Potter† series contain at least one or more acts of violence. One of the worst scenes in Harry Potter is one that includes two of the professors, and their demonstration on how to battle with their wands. After their demonstration they also c hose two students; Harry and Malfoy, to do a student demonstration. This scene practically tells children that are viewing it that it is oka...

Prostitution, Promiscuity and Venereal Disease

PROSTITUTION †¢Prostitution is the act or practice of providing sexual services to another person in return for payment. †¢Prostitution is one of the branches of the sex industry. The legal status of prostitution varies from country to country, from being a punishable crime to a regulated profession. †¢Prostitution is sometimes referred to as â€Å"the world's oldest profession†. Causes of Prostitution: 1) Poverty and unemployment has triggered the rapid spread of prostitution in the Philippines. It provides those involved in this profession a considerable amount of income to support their families as well as supply a steady flow of remittances from urban to rural areas or from prostitutes working overseas. 2) Women have been tricked into prostitution with guarantees of decent job opportunities in the city or abroad or have been kidnapped and then forced to work as prostitutes. 3) Family expectations and problems are common factors why many enter the prostitution business. Women in particular are pressured to pay for their sibling’s education or support a sick family member. Other aspects such as dysfunctional families or constant abuse from parents have lead adolescents to leave their homes and are attracted by the easy profits from prostitution. VENEREAL DISEASE †¢A disease that is contracted and transmitted by sexual contact, caused by microorganisms that survive on the skin or mucus membranes, or that are transmitted via semen, vaginal secretions, or blood during intercourse. Because the genital areas provide a moist, warm environment that is especially conducive to the proliferation of bacteria, viruses, and yeasts, a great many diseases can be transmitted this way. They include AIDS, Chlamydia, genital warts, gonorrhea, syphilis, yeast infections, and some forms of hepatitis. Also known as a morbus venereus or sexually transmitted disease (STD). PROMISCUITY †¢Refers to â€Å"casual sex† with multiple sexual partners. The term can carry a moral judgment and is viewed in the context of the mainstream social ideal for sexual activity to take place within exclusive committed relationships. A common example of behavior viewed as promiscuous within the mainstream social ideals of many cultures is a one night stand. †¢One scientific study found that promiscuous men and women are judged equally harshly and both genders express strong preference for sexually conservative partners.

The Crucible do we admire Hale Essay Example

The Crucible do we admire Hale Essay Example The Crucible do we admire Hale Paper The Crucible do we admire Hale Paper Reverend Hale is trying to help, and he tries to dispel the notion that the conditions of the two girls Betty and Ruth are caused by witchcraft, but fails to do so as the town is aware of what is going on. Then he eventually spills the beans and spreads fear in that the Devil is loose in Salem. In Act 2 when Hale goes to the Proctors house to privately talk to them, the stage directions say he had a drawn and slightly guilty air giving the impression that he no longer has the atmosphere and dominance around him. He gets slightly worried when a good man as proctor could not recall the 10 commandments later saying no crack in a fortress may be accounted small meaning that even small insignificant mistakes or problems cant just be ignored. As I have said, this book is based around the events over 315 years ago in Salem, Massachusetts. In act 3 the witch trials begin and this reminds us of those that occurred in 1692. They are very similar to what happens in the crucible and the characters are also similar, for example Giles Corey was pressed to death for not revealing the name of a person wanted, and this too happened in real life with the same character and also rev john hale of Beverley and Tituba the negro slave were too there in real life, as were some of the other characters. Miller has also used the characteristics of some of these characters too. Another similarity between this play and history is the House of Un-American Activities Committee (HUAC). Formed in 1934, the HUAC was formed to investigate communist issues such as Nazi Propaganda and other propaganda issues as part of the United States House of Representatives. How is the crucible at all relevant to this? Well, Danforth is similar to the HUAC as he sees himself as superior to people of Salem and in the courtroom, just like how the HUAC felt about themselves, and both believe that their judgement is always the correct one. This is shown by Danforths very controlling manner in the courtroom for example this is a clear attack upon the court as he emits power and rule over John Proctor. The second similarity is that the HUAC can be easily seen as corrupted and this corruption is just like the court in the play as the courts judge Danforth wants to convict as many people as he can in Salem for his own gain. Although this isnt fair and just, this high number of convictions will make him look good and he could be promoted, noticed, moved to head judge, or something of a similar field. An example of this is when Danforth says do you know that near to four hundred are in the jails from Marblehead to Lynn, and upon my signature? Here he is being self admiring and trying to show off how good a judge he thinks he is and also shows that he is very proud that he has jailed so many people. In act 3 and 4, we realize how selfish Parris can be. At every opportunity possible, he accuses and disputes any people who may pose a threat to him and his position in the town and the church. Even in the courtroom Parris displays this sort of behaviour calling out that attacks are being made on the court and tries to create a bias feeling towards people in a negative manner. However, into act 4 Hale does the opposite and goes against the court to try and help bring justice. Now we really admire Hale and despise Parris even more. He is trying to help Proctor now as he is a truthful man and knows that proctor is innocent. He wants justice to come out of the case and wants proctor to sign the confession so that he will live. In act 4, Parris realises what he is doing is wrong, and begins to change. Like Hale, be begins to turn to the side of the accused, and wants proctor to live. However, this is no act of kindness, this change comes about as the mood of the town worsens and focuses on him. So, he is doing it for the good of himself and he realises that if Proctor was to be hung, he could lose his position as minister and even be thrown out of Salem. This makes us despise Parris further. However, if it were for the reason that he has turned to a kind and truthful man who wanted to stop it from happening we would admire him. Another thing to despise Parris is the very pathetic and selfish action at the end of act 4 before Proctor is to be hung, where Parris offers him some cider; If you desire a cup of cider, Mr Proctor, I am sure I-. He does not finish as he sees Proctor giving him an icy stare. To do this, especially when you are the man who is responsible for his hanging, is just outrageous! Parris, throughout the play, can only be described as selfish, heartless, small minded and self motivated a sort of man who no one would want to know or associate with, and especially for someone like this to be a Minister! Despisable. Rev Hale, throughout the play, has feelings for people and only wants to help and do the right thing. He knows whats right and wrong and unlike Parris, does what is right for other people and not whats best for him. A man you would want to know, a man with the true personality of a Reverend, admirable.

Seagrasses and Seagrass Beds

Seagrasses and Seagrass Beds Seagrass is an angiosperm (flowering plant) that lives in a marine or brackish environment. Seagrasses grow in groups, forming seagrass beds or meadows. These plants provide important habitat for a variety of marine life.   Seagrass Description Seagrasses evolved around 100 million years ago from grass on land, thus they look similar to our terrestrial grasses.  Seagrasses are submerged flowering plants that have leaves, roots, flowers and seeds.   Since they lack a strong stem or trunk, they are supported by the water.   Seagrasses attach to the ocean bottom by thick roots and rhizomes, horizontal stems with shoots pointing upward and roots pointing downward. Their blade-leaves contain chloroplasts, which produce energy for the plant through photosynthesis. Seagrasses Vs. Algae Seagrasses may be confused with seaweeds (marine algae), but they are not. Seagrasses are vascular plants and reproduce by flowering and producing seeds. Marine algae are classified as  protists  (which also includes protozoans, prokaryotes, fungi and  sponges), are relatively simple and reproduce using spores. Seagrass Classification There are about 50 species of true seagrasses worldwide.  They are organized into the plant families Posidoniaceae, Zosteraceae, Hydrocharitaceae, and Cymodoceaceae. Where Are Seagrasses Found? Seagrasses are found in protected coastal waters such as bays, lagoons, and estuaries and in both temperate and tropical regions, on every continent except Antarctica.  Seagrasses are sometimes found in patches, and these patches can expand to form huge seagrass beds or meadows. The beds can be made up of one species of seagrass or multiple species. Seagrasses require lots of light, so the depths at which they occur in the ocean are limited by light availability.   Why Are Seagrasses Important? Seagrasses provide food and habitat for a variety of marine life (more on that below!).They can stabilize the ocean bottom with their root systems, which gives greater protection from storms.Seagrasses filter runoff and trap sediments and other small particles. This increases water clarity and the health of the marine environment.  Seagrasses help boost local economies through supporting vibrant recreation opportunities. Marine Life Found in Seagrass Beds Seagrasses provide an important habitat to a number of organisms. Some use seagrass beds as nursery areas, others seek shelter there their whole lives. Larger animals such as manatees and sea turtles feed on animals that live in the seagrass beds. Organisms that make the seagrass community their home include bacteria, fungi, algae; invertebrates such as conch, sea stars, sea cucumbers, corals, shrimp and lobsters; a variety of fish species including snapper, parrotfish, rays, and sharks; seabirds such as pelicans, cormorants and herons; sea turtles; and marine mammals such as manatees, dugongs and bottlenose dolphins. Threats to Seagrass Habitats Natural threats to seagrasses include storms, climate changes such as floods and droughts affecting water salinity, disruption of seagrasses by small predators as they search for food, and grazing by animals such as sea turtles and manatees. Human threats to seagrasses include dredging, boating, water quality degradation due to run-off, and shading of seagrasses by docks and boats. References and Further Information: Florida Museum of Natural History. 2008. †Seagrasses†. (Online) Florida Museum of Natural History. Accessed November 12, 2008.Florida Fish and Wildlife Conservation Commission. 2008. Learn About Seagrasses.  (Online). Florida Fish and Wildlife Conservation Commission Fish Wildlife Research Institute. Accessed November 12, 2008.Florida Fish and Wildlife Conservation Commission.   Importance of Seagrass. Accessed November 16, 2015.Florida Department of Environmental Protection. 2008. †Seagrasses† (Online). Florida Department of Environmental Protection. Accessed November 12, 2008.Seagrass.LI, Long Island’s Seagrass Conservation Website. 2008. †What is Seagrass?† (Online). Cornell Cooperative Extension Marine Program. Accessed November 12, 2008.Smithsonian Marine Station at Fort Pierce. Seagrass Habitats. Accessed November 16, 2015.Smithsonian National Museum of Natural History. Seagrass and Seagrass Beds. Ocean Portal. Accessed November 1 6, 2015.

Crucibles of Leadership by Warren G. Bennis Article

Crucibles of Leadership by Warren G. Bennis - Article Example In order to understand thoughts, opinions and impacts of the article it is important to first present a brief discussion about authors of ‘Crucibles of Leadership’. Warren Bennis who is the leading author of the article was born in 1925 and he is now recognized as the American scholar. He played a significant role in the development of modern leadership as a comprehensive field whereas he is also an organizational consultant (About Warren Bennis). He is renowned for his influence over people and also for introducing new concepts to the overall business approach. Robert J. Thomas is the fellow author of Bennis who contributed in the development of this article. He is a senior member and an associate partner with the Accenture Institute for Strategic Change. His profound thoughts have enabled him to understand the deeper concepts of leadership. On the basis of his knowledge and experience he has been able to help individuals to identify leaders within them. The message pre sented in the ‘Crucibles of Leadership’ can be categorized as following (Bennis):Differences and Learning: As discussed previously that a crucible is actually an experience which alters the sense of identity of an individual. One of the commonly known types of crucibles is prejudice experience. When a person fall prey to prejudice then he is particularly forced to project a vague image of her or himself. The experience is highly traumatic in nature which also sometimes leads to the development of anger.

Patterns in Global Communication Essay Example | Topics and Well Written Essays - 250 words

Patterns in Global Communication - Essay Example The program was initially meant to monitor the Soviet Union. However, the system is now used to counter terror attacks (Kamalipour pg. 328). Future world wars will take place with the use of the internet. The internet allows malicious people to send viruses through emails that might affect the files of a company. Cyber terrorists can also use the internet to spread propaganda. Cyber-attacks are also expected to increase in the near future. I think that the digital age and the â€Å"pop culture† is a threat to some cultures and traditions. Developing countries that have struggled to keep their cultural practices alive are facing major challenges conserving their cultures. This is due to the effect technology like video games; computer software’s and western television programming are having on their society. This is slowly eroding their cultural beliefs and practices (Kamalipour pg. 331). The topic about the effect that technology is having on cultures of people in the developing countries interested me a lot. This is due to the fact that these countries have struggled to preserve their cultures for decades and it’s all going away due to the effect of

We Steal Secrets Assignment Example | Topics and Well Written Essays - 1500 words

We Steal Secrets - Assignment Example Certainly one notable fact is that the title of the documentary has something that sounds like a disrespectful slogan for the embattled WikiLeaks organization. Actually, Gen. Michael V. Hayden, the National Security Agency ex-director is the one who speaks out the expression â€Å"we steal secrets.† Gen. Michael V. Hayden does this when he tries to explain how the activities of the government, which involve secrets, require absolute secrecy. The unanticipated basis of the quote is simply not a curiosity, since it lies at the heart of twinned stories of the documentary and WikiLeaks. The documentary gives an explanation of what took place when Julian Assange came up with the WikiLeaks project with the purpose of circulating sensitive documents from unidentified contributors, and when a forlorn private Army, Bradley Manning, took the chance WikiLeaks made to air the dirty laundry of the military (Dir. Gibney, We Steal Secrets: The Story of WikiLeaks). Furthermore, the documentary is a story of absolutist ideals that appeared somehow sour and of private distress in search of a channel, with drastic results. Alex Gibney’s account of this latest history tries to map out a kind of double misfortune. The documentary, which takes over two hours, shuffles among the well-revealed story of WikiLeaks, directed by the arrogant Mr. Assange; Private Manning’s far more persuasive afflictions involving sexual distinctiveness; and some strong but overlapping critics. The extensive treatment does not have the drive the documentary maker has depicted elsewhere, and the story feels prolonged to comprise an obviously prized interrogation with one of the two females who have made claims of sexual assault crimes against Mr. Assange. The woman with a partly hidden face plays a role in the documentary’s central, basic pivot regarding Mr. Assange, whose web site, the WikiLeaks, also supplied sensitive

Participatory Notes Essay Example for Free

Participatory Notes Essay Participatory Notes commonly know as P-Notes or PNs are instruments issued by registered foreign institutional investors (FII) to overseas investors, who wish to invest in the Indian stock markets without registering themselves with the market regulator, the Securities and Exchange Board of India SEBI. SEBI permitted foreign institutional investors to register and participate in the Indian stock market in 1992. Investing through P-Notes is very simple and hence very popular amongst foreign institutional investors. Contents 1 Working 2 Need 3 Participatory Notes Crisis of 2007 4 Trends in PN 5 References Working Participatory notes are instruments used for making investments in the stock markets. However, they are not used within the country. They are used outside India for making investments in shares listed in that country. That is why they are also called offshore derivative instruments. In the Indian context, foreign institutional investors (FIIs) and their sub-accounts mostly use these instruments for facilitating the participation of their overseas clients, who are not interested in participating directly in the Indian stock market. For example, Indian-based brokerages buy India-based securities and then issue participatory notes to foreign investors. Any dividends or capital gains collected from the underlying securities go back to the investors. Need Anonymity: Any entity investing in participatory notes is not required to register with SEBI (Securities and Exchange Board of India), whereas all FIIs have to compulsorily get registered. It enables large hedge funds to carry out their operations without disclosing their identity. Ease of Trading: Trading through participatory notes is easy because participatory notes are like contract notes transferable by endorsement and delivery. Tax Saving: Some of the entities route their investment through participatory notes to take advantage of the tax laws of certain preferred countries. Money Laundering: PNs are becoming a favourite with a host of Indian money launderers who use them to first take funds out of country through hawala and then get it back using PNs.

Television Programs :: Personal Narrative Media Entertainment Essays

Television Programs Nature. PBS. 2004. Orangutans: Just Hangin’ On. When I was nine years old, my family lived in Ayer, Massachusetts. I was sad to leave my friends in Colorado behind, but luckily lived on a street with a lot of other kids that I became fast friends with. There was a military base located in the town, so it was not unusual for new transplants to come in and out of the school throughout the school year. My teacher was fantastic and helped me catch up when it was clearly evident that this school was way ahead of mine back home. Soon I became one of the top students in my class and had made a best friend in the girl across the street. I began to become accustomed to my quaint small town, with the candy store that still sold nickel candies. There was a bookstore that didn't mind if you read the magazines without paying for them, just as long as your fingers were not sticky from your nickel candy. It was one of those wonderful carefree days as a kid that my whole world changed. I had received a scooter for my birthday and rode up and down the streets with my friends on their bikes after school. The next street over from mine had a long winding hill that the daredevil bike riders liked to coast down at what seemed at the time to be as fast as a car. After riding around my much more level street, my friends became bored and wanted to test it out. I was not the most balanced of creatures on my scooter, and I wimped out. We decided that they would go down the hill and then meet me back at the old school that was next to a large field across the street from my house. The school was from the nineteenth century. There had been a fire there that shut the school down, but amazingly had not caused any structural damage to the outside. It was deemed an historic building so it remained preserved. It was kind of creepy to look in to its abandoned insides, but there was a large asphalt lot behind it and the field next to it, so the former playgrounds received a lot of attention from the kids in the neighborhood. I rode my scooter down towards the back of the school to where a basketball hoop stood and leaned my scooter against the chain link fence.

English essay part one Essay

In this essay I am going to explain how Conan Doyle adds tension and suspense to â€Å"The Adventure of the Speckled Band† I will be discussing descriptions of the setting and characters also the language he uses, I will also look into the time period it was written. Sherlock Holmes was written during the Victorian era. This was a time in London when there was much crime and poverty, London was a vile and dangerous place. Victorian people greatly feared crime with Jack the Ripper on the loose, the police couldn’t catch him because their methods were inefficient and many officers were corrupt. Victorians resented the police in London because they did not appear to be protecting the public. In 1887 Arthur Conan Doyle created, Sherlock Holmes, Victorians immediately fell for the fictional character. They liked him because he cracked every case and always got the bad guy. He was seen as the perfect detective. When Doyle tried to kill off his famous character, in 1893, he received death threats warning him to keep Holmes alive! Even know over 100 years on from Holmes birth in 1887 he is still popular. The story is called â€Å"The Adventure of the Speckled Band. † it starts with a frightened Helen stoner telling the story of her sister Julia stoner, and the mysterious circumstances surrounding her death and her concerns for her own life. Sherlock Holmes investigates and finds that Julia had been murdered by Dr. Roylott who was trying to kill Helen as well, but before Holmes could catch Dr. Roylott, the snake that he was using to try and kill the two girls, turns on him and he gets bitten and killed by it. The setting adds tension to the story because they create a spooky atmosphere, it does this in many ways, like in the description that Helen Stoner gives of Stoke Moran Manor, she says â€Å"Indian animals wonder freely over his grounds and are feared by the villagers† this gives the impression that he doesn’t want anyone on his property. When the reader learns that â€Å"‘Vagabonds†¦Ã¢â‚¬ ¦. encamp’ in the grounds† this causes tension because they are another suspect and it makes the reader wonder why he does not want others on the grounds. The reader feels intrigued when Helen Stoner says â€Å"we had no feeling of security unless our doors were locked† because, for most people, their home is the safest place in the world but Helen needs her door locked to feel safe. When the night is described as being â€Å"A wild night. The wind was howling out side and the rain was beating† this creates anticipation because something always happens during a storm, this is called pathetic fallacy. The description â€Å"windows blocked by old-fashioned shutters with broad iron bars. † makes it sound as if Helen is a prisoner and Dr. Roylott is like a guard, and a prison is designed so, no one can get in or more importantly no one can get out. The description of Stoke Moran as a â€Å"building of grey†¦.. stone†¦Ã¢â‚¬ ¦ with†¦.. two curving wings link the claws of a crab â€Å"uses a simile create the feeling that the house is alive and closing in on its occupants. The words â€Å"gathering darkness† makes it sound as if the darkness is alive and trying to consume everything How does Conan Doyle create tension and suspense in â€Å"The Adventure of the Speckled Band†?

Licensed Practical Nurse Essay

License Practical Nurse (LPN), work under the directions of registered nurses and doctors. LPN are Certified healthcare professionals that are responsible for helping and providing basic care to patients. They work in a variety of different setting, hospital, care facilities, and nursing homes. To become a LPN you would need a High School Diploma, or a GED. You would have to take your Pre Entrance Examination that would cover your basic subject like your maths, and general skills. Before you start the LPN programs you also would need your Pre Requisite. You must complete a Practical Nurse Program and pass the National Council Licensure of State Board Nursing (NCLEX-PN) exam to be certified and receive your licensure. You must be patients at all times, have good communication skills and flexibility. To interact as a health-care professional, interface with registered nurses and doctors, to perform physical assessments and to work as a team. LPN work 40 plus hours a week, on different shifts, weekends, morning, or nights and Holidays. You have to be able to stand for a long period of time. The average salary for a LPN in New Orleans is$38,115 to $41,681 per years. I reason why i pick LPN to be my next career because i just thought it was the next stepping stone for me, i already have my Clinical Medical Assistant Certificate so i thought i just could work my way up, and to stay in the healthcare/medical field, i will always have something to fallback on just in case i wanted to go back to school for something else, so i can work and attend college. I also like helping people each any every way i can, I think its a good career for me because i have a few experiences and good people skills.

The Ethical and Legal Obligations of Accounting Reporting.

The Ethical and Legal Obligations of Accounting Reporting. Accounting is known as the Language of Business. The American Heritage Dictionary of the American Language defines accounting as activities that provide information, usually quantitative and often express in monetary units, for decision making, planning, controlling resources and operations, evaluating performance, and financial reporting to regulatory authorities and the membership. Here in the United States we have three forms of accounting practice: Certified Public Accountant (CPA), Certified Management Accountant (CMA), and Certified Internal Auditors (CIA). There are many qualifications and standards each accountant must adhere to. A CPA is licensed by the state of his/her residence to provide auditing services to the public. He/She must also pass the Uniform Certified Public Accountant examination which is graded by the American Institute of Certified Public Accountants. After passing a four part exam, a CIA is given a certificate from the Institute of Internal Auditors (IIA). A CIA mostly supplies his/her services directly to their employers rather than the public.Michael Oxley , U.S. Senator from Maryland.A CMA must also pass a four part test along with meeting the experience requirements from the IMA. A CMA also provides service directly to the employer rather than the public. Along the basic criteria's (passing tests and becoming certified), individuals must also adhere to the standers and legal obligations set forth by governmental and state agencies.The Financial Accounting Standards Board (FASB) is an independent, private, non-Governmental authority that will be utilized to support the establishment of accounting principles in the United States. The mission of the Financial Accounting Standards Board is to establish and improve standards of financial accounting and reporting for the guidance and education of the public, including issuers, auditors, and users of financial information. The Securities and Exchange Commission, SEC, is the United State s governing body which has primary responsibility for overseeing the regulation of the securities industry.

Ipso, Meso, and Peri Substitutions in Organic Chemistry

Ipso, Meso, and Peri Substitutions in Organic Chemistry   The prefixes ipso-, meso-, and peri- describe ring substitutions in organic chemistry. They are part of the IUPAC nomenclature used to specify the position of any non-hydrogen substituents in an aromatic hydrocarbon. Ipso Substitution The ipso- prefix is used when  two substituents share  the same ring position in an intermediate compound. This could occur  in an  electrophilic aromatic ring substitution. Meso Substitution The meso- prefix is used when  substituents occupy a  benzylic  position when the  first carbon covalently bonds  adjacent to a benzene or other  aromatic  ring. It is seen in acridines and calixarenes. PeriSubstitution The peri- prefix is used to describe substituents at the 1 and 8 positions. It is seen specifically in naphthalenes. In addition to ipso, meta, and peri, there are two other ring substitution patterns you may encounter. There is the ortho, meta, and para substitution and the cine and tele substitution. Cine and Tele Substitution In the cine- substitution, the entering group is positioned adjacent to the one that was occupied by the leaving group. This is seen in aryne chemistry. In the tele- substitution, the new position of the entering group is more than one atom further away on the aromatic ring.

5 Examples of Repetition and Redundancy

5 Examples of Repetition and Redundancy 5 Examples of Repetition and Redundancy 5 Examples of Repetition and Redundancy By Mark Nichol In each of the following sentences, repetition of words or phrases or redundant use of similar terms is easily eliminated, as described in the explanations and shown in the revisions that follow each example. 1. This procedure is called an assay. An assay determines the purity of a precious metal. The repetition in this sentence is suitable for aiding beginning readers in comprehension but is stilted and unsuitable for normal usage. Whenever a word or phrase ending a brief sentence is immediately or almost immediately repeated at the beginning of the next sentence, convert the two sentences to a single statement such as the one shown here: â€Å"This procedure, called an assay, determines the purity of a precious metal.† (If the first sentence is more extensive, revise otherwise to omit repetition of the term.) 2. We often refer to this type of test as purple-team testing. Organizations should utilize testing such as purple-team testing or similar activity to regularly test and refine their defensive posture. In similar constructions in which a repeated word or phrase is not in proximity to the first instance, it is still often a simple matter to omit the repetition: â€Å"We often refer to this type of test as purple team testing. Organizations should utilize such testing or similar activity to regularly evaluate and refine their defensive posture.† 3. Pairing these two departments together creates critical mass to justify infrastructure investments. If the definition of a word implicitly includes a key word or phrase that also appears in the pertinent passage, omit the repetition. In this case, pairing means â€Å"bringing together,† so the inclusion of together creates a redundancy: â€Å"Pairing these two departments creates critical mass to justify infrastructure investments.† 4. Implement steps to measure the success of your data analytics efforts, and also consider the most effective ways to report success and value to management and other key stakeholders. Also is redundant when it immediately follows and: â€Å"Implement steps to measure the success of your data analytics efforts, and consider the most effective ways to report success and value to management and other key stakeholders.† 5. The personal information available in medical records can be used to perform any number of identity-theft tactics for some form of financial gain (e.g., obtaining credit, filing tax returns, etc.). The Latin-derived abbreviations for â€Å"for example† and â€Å"and so on† are redundant; delete one or the other: â€Å"The personal information available in medical records can be used to perform any number of identity-theft tactics for some form of financial gain (e.g., obtaining credit or filing tax returns)† or â€Å"The personal information available in medical records can be used to perform any number of identity-theft tactics for some form of financial gain (obtaining credit, filing tax returns, etc.).† (Note, however, that i.e. means â€Å"that is† and, unlike e.g., is not redundant to etc.) Want to improve your English in five minutes a day? Get a subscription and start receiving our writing tips and exercises daily! Keep learning! Browse the Style category, check our popular posts, or choose a related post below:7 Types of Narrative Conflict55 Boxing Idioms20 Tips to Improve your Writing Productivity