Simplifying Expressions Speech or Presentation Example | Topics and Well Written Essays - 500 words

Simplifying Expressions - Speech or Presentation Example Expressions are solved by moving terms around, combining like terms, applying the real numbers’ properties. There are several ways in which the properties of real numbers help in the simplification of the algebraic expressions. For instance, the distributive property of real numbers is applied to multiply the terms inside the parenthesis with the real numbers outside them which results into the parenthesis removal. Likewise, terms are moved to different places in the expressions with the help of the commulative property of real numbers. Concluding, we have to deal with real numbers in everyday life as the principles discussed in this assignment have application in matters as simple as totaling the price of items bought at a grocery store for the bill to as complex matters as engineering designs and calculations. In all the cases, expressions are solved using the same distributive and commulative properties of real numbers that have been discussed. Hence, knowledge of the principles of real numbers is essential to achieve accurate results in mathematics including

HR Research Paper Example | Topics and Well Written Essays - 1500 words

HR - Research Paper Example The company’s vision is to become one of the leading diversified oil companies in the world, characterized by a highly motivated workforce, as well as, safe operations. The company’s mission is to enhance profitability and safety in mining and supplying of hydrocarbon fuels and feedstock. The company as well focuses on contributing to development of the nation. One of the company’s key goals is fulfilling the country aspired standards for quality assurance, as well as, environmental protection. Because of global warming, there are set standards both locally and internationally, for environmental conservation. Because of the level of environmental degradation associated with mining companies, the company faces extremely high standards. Additionally, because of sensitivity of oil products, the products’ set standards are as well high. The company as well is committed to implementing a couple of national policies meant to increase employment opportunities for the citizens. One of the key external factors that affect the company is the political factor. Over the last a couple of decades, there have been a series of political unrest in a couple of Middle East countries. This has been a threat to the stability of the company’s profitability. One of the key reasons behind this is the fact that the company serves a couple of countries in the Middle East. Another key factor is the economic factor. The global economic cycles affect the company’s profitability as well. For example, during the 2008 global financial crisis, the company registered a decline in profitability. On the other hand, when the global economy is doing well, the company registers increased profitability. Technological factor as well affect the company. For example, the company has taken advantage of the ever-changing technology to automate most of its oil production operations. This has enhanced efficiency in

Morphology Control in Gold Nanoparticle Synthesis

Morphology Control in Gold Nanoparticle Synthesis Hammed A. Salami Introduction One of the most significant current discussions in the field of nanotechnology is the development of novel nanomaterials. When materials are reduced from bulk to the nanometer-scale dimension, they begin to exhibit unusual physical and chemical properties [1, 2]. Recently, researchers have shown an increased interest in the elucidation of the structure-function relationship of these novel nanomaterials [3, 4]. The availability of imaging techniques with nanometer resolution, such as electron microscopy has not only helped in visualizing the individual nanoparticles, but also, it has facilitated an understanding of some of the emerging properties of noble metal nanoparticles such as spectroscopic enhancement and localized surface plasmon resonance (LSPR) [5, 6]. For noble-metal nanoparticles, these structure-function relationships have attracted significant research interests. This is because, unlike in bulk metal materials, the control of the chemical and physical properties of noble-metal nanoparticles is possible with a modification of their size and shape, and by varying the material composition [1, 6]. As a result of the unique roles played by size and shape in influencing the properties of noble-metal nanoparticles, researchers have continually focused on ways to reproducibly tailor these parameters in other to adapt the nanoparticles for optimal use in a wide range of applications, including biology[4], energy[7], sensing, spectroscopic enhancement[8-10] and catalysis [7, 11]. The size of nanoparticles influences their optical properties while the shape and crystallographic facets are the major factors that determine their catalytic and surface activities [12]. Nanoparticles with non-spherical structures are referred to as anisotropic nanoparticles. Examples include nanocubes, nanoprisms, nanorods, etc. [13]. They show pronounced shape-dependent properties and functionalities, therefore a great deal of research effort has been paid at developing synthetic strategies to get a high yield of anisotropic noble metal nanoparticles having uniform structures and controlled shape and size[5]. The deliberate control of shape has however proven to be the most challenging, despite being one of the useful parameters for optimizing the properties of noble metal nanoparticles. This is particularly more pronounced in gold nanoparticles synthesis [3, 14-16]. Of the many shapes of gold nanoparticles, gold nanorods have continued to attract the most attention [2]. This is largely due to the large number of synthetic methods available, the possibility of high monodispersity and the control over the aspect ratio, which accounts for the change in their optical properties [17]. When molecules are adsorbed on the surface of gold nanoparticles, they undergo surface-enhanced Raman scattering (SERS) effects. This is due to the coupling effect of the plasmon band of the irradiated metal with the molecules electronic states [18, 19]. For gold nanorods, two Plasmon bands are prominent. They are the longitudinal plasmon band and the transverse plasmon band. These bands correspond to light absorption and scattering along the long and short axis of the particle respectively [20-22]. While the longitudinal surface plasmon resonance increases with larger aspect ratios (length/diameter), the transverse surface plasmon resonance is usually on the same wavel ength as that of nanospheres, with no dependence on the aspect ratio[23]. The current high dependence on non-renewable feedstocks can be minimized with the production of fine chemicals, petrol-derived commodities and polymer precursors from biomass[24]. Supported gold nanoparticles have been found to be very active catalysts for a number of biomass transformation and many researchers have focused their attention in searching for the best supports, reaction conditions and mechanistic studies to improve their selectivity[25, 26]. Most catalytic studies in literature involving noble metal nanoparticles, either as mono- or bimetallic catalyst, are done with spherical nanoparticles [25-27]. The spherical nanoparticles used are usually immobilized onto suitable supports to form impregnated catalysts and in some cases they are preformed before immobilization [27]. To achieve this, methods such as wet impregnation, sol immobilization etc. are often used [28, 29]. These methods however, do not allow the control of morphology of the nanoparticles. There is therefore the need to develop an understanding of morphology control in the synthesis of anisotropic noble metal nanoparticles with high yield. It would also be interesting to explore the correlation between these controlled morphologies and catalytic activities. Project Aims This project will therefore aim at synthesising various morphologies of mono and bimetallic noble metal nanoparticles, with optimum control of the morphology during the synthesis. Starting with gold, we will also explore the use of colloidal methods in immobilizing the preformed nanoparticles with selected morphologies and narrow particle size distribution e.g. gold nanorods, onto suitable supports to form heterogeneous catalysts. Since the rods expose certain crystallographic planes more than most other morphologies and also have comparatively low coordination sites, they can be potentially more selective for reactions that preferably occur on low coordination sites. As a starting point we will therefore, explore their use as supported heterogeneous catalysts in selective oxidation and hydrogenation reactions for biomass transformation. References [1]M.-C. Daniel, D. Astruc, Chemical reviews 2004, 104, 293-346. [2]J. Pà ©rez-Juste, I. Pastoriza-Santos, L. M. Liz-Marzà ¡n, P. Mulvaney, Coordination Chemistry Reviews 2005, 249, 1870-1901. [3]M. L. Personick, C. A. Mirkin, Journal of the American Chemical Society 2013, 135, 18238-18247. [4]X. Ma, M.-C. Wang, J. Feng, X. Zhao, Acta Materialia 2015, 85, 322-330. [5]C. J. Murphy, T. K. Sau, A. M. Gole, C. J. Orendorff, J. Gao, L. Gou, S. E. Hunyadi, T. Li, The Journal of Physical Chemistry B 2005, 109, 13857-13870. [6]L. T. Lanh, T. T. Hoa, N. D. Cuong, D. Q. Khieu, D. T. Quang, N. Van Duy, N. D. Hoa, N. Van Hieu, Journal of Alloys and Compounds 2015, 635, 265-271. [7]G. A. Somorjai, H. Frei, J. Y. Park, Journal of the American Chemical Society 2009, 131, 16589-16605. [8]J. E. Millstone, S. J. Hurst, G. S. Mà ©traux, J. I. Cutler, C. A. Mirkin, Small 2009, 5, 646-664. [9]M. R. Jones, K. D. Osberg, R. J. Macfarlane, M. R. Langille, C. A. Mirkin, Chemical reviews 2011, 111, 3736-3827. [10]A. R. Tao, S. Habas, P. Yang, small 2008, 4, 310-325. [11]N. Tian, Z.-Y. Zhou, S.-G. Sun, Y. Ding, Z. L. Wang, science 2007, 316, 732-735. [12]K. L. Kelly, E. Coronado, L. L. Zhao, G. C. Schatz, The Journal of Physical Chemistry B 2003, 107, 668-677. [13]M. Treguer-Delapierre, J. Majimel, S. Mornet, E. Duguet, S. Ravaine, Gold Bulletin 2008, 41, 195-207. [14]S. Koeppl, N. Ghielmetti, W. Caseri, R. Spolenak, J Nanopart Res 2013, 15, 1-11. [15]S.-S. Chang, C.-W. Shih, C.-D. Chen, W.-C. Lai, C. R. C. Wang, Langmuir 1999, 15, 701-709. [16]X. Ma, M.-C. Wang, J. Feng, X. Zhao, Journal of Alloys and Compounds 2015, 637, 36-43. [17]C. Burda, X. Chen, R. Narayanan, M. A. El-Sayed, Chemical reviews 2005, 105, 1025-1102. [18]R. L. Garrell, Analytical Chemistry 1989, 61, 401A-411A. [19]A. Campion, P. Kambhampati, Chem. Soc. Rev. 1998, 27, 241-250. [20]G. L. Hornyak, C. J. Patrissi, C. R. Martin, The Journal of Physical Chemistry B 1997, 101, 1548-1555. [21]K. L. Kelly, E. Coronado, L. L. Zhao, G. C. Schatz, The Journal of Physical Chemistry B 2003, 107, 668-677. [22]I. O. Sosa, C. Noguez, R. G. Barrera, The Journal of Physical Chemistry B 2003, 107, 6269-6275. [23]S. Eustis, M. A. El-Sayed, Chemical society reviews 2006, 35, 209-217. [24]G. Budroni, A. Corma, Journal of Catalysis 2008, 257, 403-408. [25]M. Boronat, 2013, 25, 50-76. [26]O. Casanova, S. Iborra, A. Corma, ChemSusChem 2009, 2, 1138-1144. [27]S. Albonetti, T. Pasini, A. Lolli, M. Blosi, M. Piccinini, N. Dimitratos, J. A. Lopez-Sanchez, D. J. Morgan, A. F. Carley, G. J. Hutchings, F. Cavani, Catalysis Today 2012, 195, 120-126. [28]L.-S. Zhong, J.-S. Hu, Z.-M. Cui, L.-J. Wan, W.-G. Song, Chemistry of Materials 2007, 19, 4557-4562. [29]S. E. Davis, B. N. Zope, R. J. Davis, Green Chemistry 2012, 14, 143-147. 1

Online Store Essays -- Technology, Apple, Inc.

The product is more important to brand Apple Inc. is an American multinational corporation with a focus on designing and manufacturing consumer electronics and closely related software products. It is formerly Apple Computer Inc. that was established in Cupertino, California on April 1, 1976 by Steve Wozniak and Steve Jobs. Apple develops, sells, and supports a series of personal computers, portable media players, mobile phones, computer software, and computer hardware and hardware accessories. As of September 2007, the company operates about 200 retail stores in five countries and an online store where hardware and software products are sold. The iTunes Store provides music, audiobooks, iPod games, music videos, episodes of television programs, and movies which can be downloaded using iTunes on Mac or Windows, and also on the iPod touch and the iPhone. The company's best-known hardware products include the Macintosh line of personal computers, the iPod line of portable media players, and the iPhone. (Apple Inc. , 2011) In the late 1970s, Jobs, with Apple co-founder Steve Wozniak, Mike Markkula and others, designed, developed, and marketed one of the first commercially successful lines of personal computers, the Apple II series. .Jobs' history in business has contributed much to the symbolic image of the idiosyncratic, individualistic Silicon Valley entrepreneur, emphasizing the importance of design and understanding the crucial role aesthetics play in public appeal. His work driving forward the development of products that are both functional and elegant has earned him a devoted following (Apple minus Steve Jobs, 2010). However, Steve Jobs as CEO of Apple who is leading the consumer technology wor... ...th the development of high technology, some new products continuously appear, new product design and development is a crucial factor in the survival of a company. In an industry that is changing fast, firms must continually revise their design and range of products. As a purchaser in today’s marketplace, we can choose from an astounding array of brands. For many categories, there is little product differentiation yet a multitude of brands are available. Apple is consistently coming out with new innovations to keep their products interesting, while also keeping up with the demands of modern technology. The bottom line: Apple delivers outstanding products consistently that receive high consumer ratings, causing consumers to keep coming back for more. Brand, of course, can be a soul of a company as long-term loyalty can be established only with a sustained campaign.

Concept of Divinity in Judaic, Sumerian and Hindu Society

Divinity is the core of all religions and rule most societies. Socialization based on divinity occurs almost everywhere. Most of the acceptable behaviors we have been taught since infancy have religious roots. I will compare and contrast the concepts of divinity in Judaic, Sumerian and Hindu culture, based on Genesis, The Epic of Gilgamesh and The Ramayana of Valmiki, respectively. Judging by the literature, the Judaic concept of divinity seemed to be both polytheistic and monotheistic.I conclude there were multiple gods by several passages in Genesis including when God said, â€Å"Let us make a human in our image, by our likeness†¦,† and in Job where it reads â€Å"†¦and one day, the sons of God†¦Ã¢â‚¬  indicating a belief in multiple gods. Monotheism is evidenced elsewhere throughout Genesis, including in Creation when God, not gods, created heaven and earth, and throughout Job where the title character seems monotheistic. He says things like, â€Å"The LOR D has given and the LORD has taken. May the LORD’s name be blessed. † I do, however, see more evidence of monotheism than polytheism in Judaic culture.The Hindu and Sumerian are polytheistic concepts. The Hindus had multiple gods, like Brahma, the god of creation, Visnu, the god of preservation, and Siva, the god of redemption, from the Ramayana of Valmiki while the Sumerians, in The Epic of Gilgamesh, had Ea, Anu, Adad, Errakal, Shamash, Ninurta and Istar, among others. The Judaic God, from Genesis, was a vengeful entity as evidenced after the serpent hoodwinked Eve into eating and giving Adam fruit from the tree of knowledge, good and evil. All three involved were severely punished severely.God told the serpent â€Å"Because you have done this, cursed be you of all cattle and all beasts of the field. On your belly shall you go and dust shall you eat all the days of your life. Enmity will I set between you and the woman, between your seed and hers. He will boot your h ead and you will bite his heel. † He said to Eve, â€Å"I will terribly sharpen your birth pangs, in pain shall you bear children. And for your man shall be your longing and he shall rule over you. † And to Adam he said, â€Å"Cursed be the soil for your sake, with pangs shall you eat from it all the days of your life.Thorn and thistle shall it sprout for you and you shall eat the plants of the field. By the sweat of your brow shall you eat bread till you return to the soil, for from there you were taken, for dust you ate and to dust shall you return. † The Sumerian gods were also pretty vengeful. I say this because of the great flood to wipe out the humans (except Utanapishtim and his wife) because the gods felt man was out of control and needed to be purged from Earth. Utanapishtim was warned by Ea (or Shamash) of the impending flood, told to build a boat, and not to warn the people of Shuruppak of the impending flood.The Hindu gods seemed less vengeful due to karma; if you follow dharma, karma would reward you. If you stray from the path of dharma, karma would punish you; thus, the gods did not need to be vengeful. This leads me to the conclusion that the Sumerian gods were followed out of fear but the Hindu gods were followed out of faith in dharma. The Judaic concept is a combination of the two. Man initially obeyed God out of fear, but eventually (at the end of Job), obedience was faith-based. Man and God developed faith in each other.There was free will in Judaic society, evidenced by God saying to Adam, â€Å"From every fruit of the garden you may surely eat. But from the tree of knowledge, good and evil, you shall not eat, for on the day you eat from it, you are doomed to die. † This allowed Adam to make a choice; thus giving him free will. I find evidence of fate and free will in Sumerian society. Gilgamesh encountered several instances where he made decisions without knowing there were consequences (indicating fate) and en countered the wrath of the gods. An example is when he rebuffed the goddess Ishtar’s wish to marry him.He knew not what the consequences would be beforehand. Ishtar was so dejected by the rejection that she (unsuccessfully) sent the Bull of Heaven to kill him. I see evidence of free will when Enkidu urged Gilgamesh to slay Humbaba, saying in part, â€Å"Finish him off for the kill, put him out of existence, before Enlil the foremost one hears of this! The great gods will become angry with us†¦,† indicating he knew beforehand the gods would not be happy with Humbaba’s slaying (indicating free will). In the Hindu concept, there was also no free will; you were to follow dharma.This was illustrated by Rama’s response to his mother, Kausalya, when she objected to his banishment to the Dandaka forest for fourteen years and asked that he take her with him. He said to her, â€Å"Mother, that would be extreme cruelty towards father. So long as father lives, please serve him: this is the eternal religion. To a woman her husband is verily god himself. † He was willing to follow the king’s will to follow dharma and kept his mother on the path of dharma, as well. There was evidence of all three cultures of their gods communicate directly to man.In the Judaic view, God spoke directly to Adam and Eve; not through a proxy. After God created them, He said to them, â€Å"Be fruitful and multiply and fill the earth and conquer it, and hold sway over the fish of the sea and the fowl of the heavens and every beast that crawls upon the earth. † There is also evidence in Job that God spoke directly to man, like when He answered Job from the whirlwind, â€Å"Who is this who darkens counsel†¦Ã¢â‚¬  In Sumerian culture, the gods speak directly to the humans as evidenced by Ishtar propositioning him thusly, â€Å"Come, Gilgamesh, you shall be my bridegroom!Give, oh give me of your lusciousness! You shall be my husband and I s hall be your wife. † Hindu divinity had gods communicating with humans, also. The god, Lord Visnu, who took the form of Rama to destroy the evil Ravana, regularly interacted and communicated with mortals throughout The Ramayana of Valmiki. The gods in Judaic and Sumerian culture seemed to be very petty and immature, behaviorally. The story of Job is an example of the Judaic god’s immaturity, when God allowed the Adversary to torture Job to prove his faith in God.This was little more than showing off, because he had no reason to test Job’s faith. Some Sumerian gods were also petty. Ishtar, as mentioned earlier, made the puerile decision to unleash the Bull of Heaven on Gilgamesh in a failed attempt to kill him for turning down her proposal. The Hindu gods do not seem as immature as the others, but they can make bad decisions based on emotion. Visnu (in the form of Rama), for example, was so angry when Sita was kidnapped (he thought a demon had eaten her), he threa tened to kill all living things.He said in part, â€Å"†¦I shall set aside all these virtues and the universe shall witness my supreme glory which will bring about the destruction of all creatures, including the demons. † In this paper, I have compared and contrasted the similarities of and differences between the Judaic, Sumerian and Hindu concepts of divinity. These concepts have many similarities and several distinct differences. I am hopeful I have sufficiently illustrated these common and unique divine attributes of religion.

Criticism of Homer’s “The Iliad” Essay

Homer’s Iliad would have been severely criticized by Socrates, as depicted by Plato in The Republic. Plato is critical of Greek literature and mythology and even went so far as to propose a system of censorship in the ideal city. Plato believed myths to be lies and thus the propagation of these lies should be halted in society. In The Republic he wrote, â€Å"Whenever they tell a tale that plays false with the true nature of gods and heroes†¦they are like painters whose portraits bear no resemblance to their models.† In this excerpt, Plato is saying that when literature â€Å"plays false with the true nature of gods and heroes†-which means depicts false information-it paints a false impression of reality. Therefore Plato proposed a system of censorship to prevent this false depiction of reality. This censorship was primarily focused on protecting the impressionable youth. Plato felt that early exposure to fictional accounts would dull a person’s ability to make accurate judgments regarding matters of fact and might encourage some people to emulate the worst behavior of the tragic heros. As a result, Plato was severely critical of Greek literature and mythology. In viewing The Iliad, Plato would criticize it for several reasons. For one, throughout the epic the Gods use humans as pawns to do their own bidding-the argument can even be made that the entire Trojan war was started and developed as a result of Godly affairs. The reason the Trojans and Greeks fought was because of Helen, who was taken from the Achaeans and given to the Trojans by Aphrodite. Then when Thetis beseeches Zeus to make the Greeks to lose, they do. So the entire epic is largely a game between the Gods with the humans as their pawns. To the impressionable youth of Greece whom read this epic, this is hardly a positive aspect of life. This could easily bring about in them a cynical view of life-therefore in this respect Plato would be heavily critical of the Iliad. In inspection of Homer’s epic The Iliad, Plato would undoubtedly find that too many loathsome acts are committed and thus it should be censored. He would point to Paris’ cowardice, to Agamemnon’s abuse of power, and to Helen’s unfaithfulness to Menelaus. He would point to Achilles’ blood-thirst, to his abandonment of the Greeks, and to his bouts of rage. But although Achilles committed all these shameful acts in The Iliad, an  implicit message in the epic is the eventual destruction brought about by unchecked rage. The Iliad begins with â€Å"Sing, goddess, the anger of Peleus’ son Achilleus and its devastation.† We also know that Achilles is destined to die because of this rage. So although the various acts that Achilles commits are detestable, we can learn from his mistaken ways. In reading The Iliad, the Greek youth could see the effects of uncontrollable rage and learn the unfavorable fate destined to those who possess it. Theref ore Homer could defend his work by saying that not only shouldn’t The Iliad be censored because it could corrupt the youth, but if anything it should be championed for it teaches important lessons such as the results of unchecked rage. In defense of the Iliad, Homer might say that Plato fails to see past an equation between morally good characters and good literature. That is to say that Sokrates, or Plato who portrays him, erroneously believes that literature cannot be good if the characters it portrays are not morally good. But this is clearly not a fact-very often, in order to educate the youth and the population as a whole it is necessary to demonstrate the less than glorious aspects of life. An education based solely on the positive aspects of life fails to include the other facet of life-the immoral-which is fundamental to a well rounded education. In theory it might seem logical to censor literature which exposes people, places, or things contrary to what society believes should be emulated. Ostensibly, it makes sense to cover up cowardice, immorality, ignorance, corruption, etc. for these things might influence the youth negatively. But the truth is that we are all exposed to these things eventually. Therefore exposure to them beforehand in literature is especially important as it can be used as a tool to show that these immoral things are frowned upon. In addition, a well-rounded individual cannot be formed if he is only exposed to the positive side of life, for an entire other side exists-and being informed and aware of this other side is integral to an individual’s proper education. Naturally, Homer and Plato would see differently in respect to the effect The Iliad would have on its audience. Assuming the audience is the Greek youth, Plato would most likely believe it would corrupt their impressionable minds.  It would give them inaccurate ideas about how people should act and it would give them a taste of the horrors of war. Paris cowardly leaving the battlefield after losing to Menelaus, then going to his bedroom to make more love to Helen is not the way people in an ideal city should act. Neither is taking the daughter of a priest of Apollo and not returning her after a supplication by her father. Brutally murdering Hektor then dragging his body back to the Achaean camp, as Achilles did, is not the way people should act either. The youth of a nation, as Plato would agree, should not be educated in the ways in which people shouldn’t act but rather in the ways they should. Through a negative portrayal of the Gods and humans in general, the impressionab le minds of the youth would be forever corrupted and as such literature such as The Iliad should be censored. Homer on the other hand would say the opposite. He would argue that a well-rounded individual cannot be formed if he is only exposed to the positive side of life, for an entire other side exists-and being informed and aware of this other side is integral to an individual’s proper education. He could also defend his work by saying that not only shouldn’t The Iliad be censored because it could corrupt the youth, but if anything it should be championed for it teaches important lessons such as the results of unchecked rage (in Achilles). Censorship of literature that inaccurately depicts the correct way in which people should act was championed by Plato. As such, The Iliad by Homer would have been severely criticized as it depicted Gods and humans acting in ways contrary to those an ideal city would promote. On the other hand Homer would claim that sole exposure to the positive side of life makes for an incomplete education, and that through the reading of the epic, the erroneous ways of the characters can be learned from as ways in which not to act, and thus the Iliad should not only not be censored but if anything endorsed.