General Principles of Ecology Essay Example for Free

General Principles of Ecology Essay The term ecology refers to the study of abundance and distribution of living organism in an ecosystem, together with the interaction that exists between them and the natural environment. The distribution of organisms is usually influenced by the adaptation of a certain organism to the environment. An adaptation refers to an organism’s ability to exist successfully in a given environment. Therefore, organisms can only exist in environments that they are adapted to. When a given species of animal or plant is adapted in a given natural environment, then it becomes distributed in that environment densely and in high numbers. Those that lack the ability to adapt well are poorly distributed, since they cannot cope with the pressures or stress that emanate from the environmental conditions. Different species of plants can be adapted to low and high –nutrient environments. Plants always try to adapt to the environments in several ways. The plants that inhabit low –nutrient areas grow at a slow rate, as an adaptation to the scarcity of nutrients. These plants also have the ability to recycle nutrients internally. Those in high nutrient areas on the other hand grow fast. They have the ability to control the absorption of nutrients at minimum levels. The breakdown of dead organic matter in the soil undergoes several processes. The first process of breakdown involves the alteration of the organic matter chemical components. This is then followed by another process, whereby the chemical components are split or fragmented. After undergoing these two processes, the organic matter mineral nutrients are then released into the soil and they are then converted into simpler components that can be absorbed by the plants. The day length influences the seasonal activity of plants and animals, because the length of the day length triggers certain changes. These changes include the climatic patterns in an area. Both plants and animals synchronize their behavioral and physiological activities with the seasonal changes. By doing this, they are able to carry out certain activities based on the season of the year. For example, the migration in animals is sometimes synchronized with the seasonal changes. Plants on the other hand, synchronize activities such as pollination with seasons when the activity can be easily facilitated by the pollinators. Temperature conditions in a given natural ecosystem affect the response of both the homeotherms and the poikilotherms. While the homeotherms have the ability to maintain their internal environment temperature at a stable level, the poikilotherms on the other hand cannot regulate their internal environment temperature. Changes in temperature triggers behavioral changes in poikilotherms as they try to regulate their body temperature depending on the external temperature. For example, some poikilotherms may bask out in the sun so as to regulate body temperature by warming their bodies. The homeotherms try to regulate their body temperature using feedback mechanisms in their body systems. For instance, their blood vessels may undergo dilatation or constriction as their bodies try to conserve heat. Climatic changes may trigger an inactive state in animals, especially during the cold season or winter. Hibernation and torpor are two examples behavioral adaptations in animals to very low temperatures. In both, animals go into a state of inactivity and they lower their body metabolism as a strategy of conserving energy . However, there is one major difference between the two. In hibernation, the animals’ body temperature at a significant level. Animals that hibernate become inactive for a long period of time. Torpor on the other hand is whereby animals lower their body temperature but at minimal levels as compared to that in hibernators. Animals that undergo torpor may be inactive but usually wake up several times. The Black Bear is not considered as a true hibernator because its body temperature does not reduce significantly as that of a true hibernator . Furthermore, the bear remains alert and active during the period of â€Å"hibernation†. References Odum, E. P. (1971) . General Principles of Ecology, Third Edition W. B. Suanders Company. Smith, T. M. , and Smith, R. L. (2005). Elements of Ecology. (6th Edition). Benjamin Cummings Publishers

Analysis of Red Sorghum Essay -- Red Sorghum Zhang Yimou China Movies

Analysis of Red Sorghum WHEN Zhang Yimou made his directorial debut, Zhang Yimou made his directorial debut, Red Sorghum, in 1987, he was better known as a cinematographer whose talent had been crucial to the success of critically acclaimed films like Zhang Junzhao's One and Eight (1984, released 1987) and Chen Kaige's Yellow Earth (1984). Not only did Red Sorghum become a seminal film of the Fifth Generation, it also won the Golden Bear at Berlin in 1988, becoming the first mainland Chinese film ever to be awarded the highest honour at a major international film competition. Set in the 1920s and '30s in northern China, Red Sorghum's narrative centres on the fate of a young woman who is forced to marry a rich old leper but who eventually falls in love with a younger man. The motif of female oppression in feudal China is repeated in Zhang's next two films, Ju Dou (1990) and Raise the Red Lantern (1991). The films form a loose triptych, linked not only by similar thematic concerns but also stylistic elements. The latter include the luscious use of colour, lighting and bold composition to create the sensuous images and metaphors which have distinguished Zhang as an original auteur. Equally prominent are the silences and spare dialogue; music and sound are used with precision -- nothing extraneous is added. This article focuses on how visual and aural components in Red Sorghum are employed to enhance the dramatic aspect of the narrative as well as to convey philosophical and metaphoric meaning. RED SORGHUM is narrated as much through its storyline as by its splendid images and aural qualities. The film is photographed by Gu Changwei (who also shot Chen Kaige's (Farewell, My Concubine) in Cinemascope; the music is composed by Zhao Jiping, who has since composed the rest of the music scores for Zhang's films. The opening sequence establishes the vibrant mood and mythical atmosphere of the film and introduces the themes of passion and freedom through powerful imagery and music. It also establishes Zhang Yimou as a visual sensualist. In a deserted setting comprising mainly sand and stone, a strain of wedding music grows progressively louder. A traditional red sedan chair carried by a group of shirtless men, followed closely by a retinue of trumpeters and drummers, enliven the harsh landscape. Inside the covered sedan chair, the pretty face of a young br... ...vineyard. The workers revolt against the Japanese, and after their uprising is crushed, the Japanese order two of the local people skinned alive in front of the others. This sequence, shocking in its detail, is a dramatic change from the fable that went before. "Red Sorghum" perhaps can be read as a parable of China's development, or as a hymn in praise of the way the workers resisted the Japanese invaders. Western audiences probably are going to be more interested in the melodrama and the overwhelming visual quality of the film. It is some kind of irony that when Hollywood switched over to cheaper and faster forms of making color films, classic Technicolor equipment was dismantled and sold to China - which now makes some of the best-looking color films in the world. The cinematography in "Red Sorghum" has no desire to be subtle, or muted; it wants to splash its passionate colors all over the screen with abandon, and the sheer visual impact of the film is voluptuous. If the story is first naive and then didactic, that is one of the film's charms; Hollywood doesn't make films like this anymore, because we have forgotten how to be impressionable enough to believe them.

Chilean Mine Collapse

Chilean mine collapse George Montenegro BCOM/275 March 24, 2013 Allen Sutton Resource: â€Å"Over 30 Workers Trapped After Chilean Copper Mine Collapse† article found in the Electronic Reserve Readings. Research additional articles and information about the Chilean mine collapse. There are two parts to the assignment, as detailed below. Part 1: Write a 700- to 1,050-word paper using this and other articles as a resource. Because communications must be designed with the audience in mind, answer the following questions in your paper:   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   What are some considerations to remember given the different roles and people in the audience? o  Ã‚  Ã‚   What would be the potential needs of the families of the miners in receiving a message about this incident? o  Ã‚  Ã‚   What would be the potential needs of the company’s employees when receiving a message about this incident? ?  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   What actions must you take before and aft er the message is delivered to ensure that it was received as intended? Part 2: Draft two written communications from the mining company announcing the accident, using what you have learned about the audience and effective messages.One communication should be directed to the families of the trapped miners; and the other as an internal news release to employees in the company. For both, identify the most appropriate channel—face-to-face, e-mail, video, memo, and so on. Submit one consolidated MS Word paper encompassing Part 1 and Part 2 of the assignment. Clearly identify Part 1, and Part 2, in the consolidated document. Format the document consistent with APA guidelines. Post the assignment to Assignments link

Growing up in a small town

Greg has completed his final tour of duty with the armed services and is glad to be returning home. He is grateful that he was able to accomplish the goals he set for himself: (1) complete basic training; (2) use his newly learned skills to support his unit with honor; (3) stay healthy; and (4) return home so he can use his veteran’s benefits to complete his education. As he begins his life as a civilian, he realizes that he will no longer have an officer giving him orders and directing his every movement.He must begin to define the orders for himself and use the discipline he learned in the service to his advantage as a civilian. Greg wonders where and how to begin since his time in the military conditioned him to follow orders and work with a team to achieve the mission. Greg realizes that now he must take control of his own personal mission †¦ to succeed in completing his degree. Greg recalls that he has given it some thought. He begins to reflect on what it would take for him to accomplish his ultimate goalof earning a degree.He thinks back to his time in basic training and remembers the phrase of the instructor, â€Å"success begins with one step at a time. † Greg keeps that thought foremost in his mind as he starts to prepare a list of goals (the steps he will need to take on the path to his ultimate goal). He remembers that he performs best when he is able to write his goals/steps down and recalls the satisfaction and motivation he gets when he is able to check them off as he completes each one. It makes him feel good to be able to see what he has accomplished on the list and have a visual picture of his movement toward his ultimate goal.This is a new beginning for him and he needs to ensure he gets the tools to help him be successful. He remembers that his advisor, Wanda, recommended a template for him to use to create a goal list as he began his first class. He wishes he had paid more attention to her because he sure could use that t emplate. He recalls she sent it to him in an email. He searches his emails and locates the template which includes helpful reminders. Click here to download the SMART Goals template.He begins to complete the template and vows to update it after every session to ensure he stays on track to complete his goals and accomplish the dream of earning his degree. In the case above, Greg realized that he needed to set specific goals so he had a plan to guide his steps toward completing his degree. He began by finding a resource that would help him create his goals. Now that you are completing UNIV103, what are your next steps? This assignment will give you an opportunity to create a personal goal template to use as a resource moving forward into your program.Specifically, you will: 1. Reflect upon the ideas you had as you completed the application process. 2. Create the ultimate SMART goal you would like to achieve considering the ideas you had as a starting point. 3. Using the template that Greg’s advisor provided, create at least 3 (immediate, mid-range, long-range) SMART goals each for your personal, academic, and professional life that will step you toward achieving your ultimate goal. Be sure to list advantages, disadvantages, and ultimate costs.

Biography of El Cid, Medieval Spanish Hero

Biography of El Cid, Medieval Spanish Hero El Cid (1045–July 10, 1099), whose birth name was Rodrigo Dà ­az de Vivar (or Bibar), is a Spanish national hero, a mercenary soldier who fought for the Spanish king Alfonso VII to liberate parts of Spain from the Almoravid dynasty and eventually captured the Muslim caliphate of Valencia and ruled his own kingdom. Fast Facts: El Cid Known For: National hero of Spain, mercenary soldier against Christian and Muslims, ruler of ValenciaBirth Name: Rodrigo Dà ­az de Vivar (or Bibar)Born: c. 1045 near Burgos, SpainParents: Diego Lainez and a daughter of Rodrigo AlvarezDied: July 10, 1099 in Valencia, SpainEducation: Trained in the Castilian court of Sancho IISpouse: Jimena (m. July 1074)Children: Cristina, Maria, and Diego Rodriguez Rodrigo Dà ­az de Vivar was born into a chaotic period in Spanish history when much of the southern two-thirds of the Iberian peninsula had been conquered by Islamic forces during the Arab conquest beginning in the 8th century CE. In 1009, the Islamic Umayyad Caliphate collapsed and disintegrated into competing city-states, called taifa. The northern third of the peninsula was broken into principalities- Leà ³n, Castile, Navarre, Barcelona, Asturia, Galacia, and others- who fought each other and their Arab conquistadors.  Islamic rule in Iberia varied from place to place, as did the borders of the principalities, but the last city to be liberated by the Christian Reconquista was the Emirate of Granada in 1492.   Early Life El Cid was born Rodrigo Dà ­az de Vivar or Ruy Dà ­az de Vivar in the town of Vivar in the Castilian principality near Burgos, Spain in about 1045. His father was Diego Lainez, a soldier in the battle at Atapuerco in 1054, which was fought between the brothers King Ferdinand I of Leà ³n (Ferdinand the Great, ruled 1038–1065) and King Garcà ­a Snchez III of Navarre (r. 1012–1054). Some sources report that Diego was a descendant of Lain Calvo, a legendary duumvir (magistrate) in the Court of Ordoà ±o II (King of Galacia, ruled 914–924). Although her name is not known, Diegos mother was a niece of the Castilian diplomat Nuà ±o Alvarez de Carazo (1028–1054) and his wife Doà ±a Godo; she named her son after her father, Rodrigo Alvarez. Diego Laniez died in 1058, and Rodrigo was sent to be the ward of Ferdinands son Sancho who resided at his fathers court in Castile, then part of Leà ³n. There Rodrigo likely received formal schooling in the schools which had been built by Ferdinand, learning how to read and write, as well as training in the use of arms, horsemanship, and the art of the chase. He may have been trained to arms by Pedro Ansurez, a Castilian count (1037–1119), known to have been in residence at Ferdinands court at the time. Military Career In 1065, Ferdinand died and his kingdom was divided up between his sons. The eldest, Sancho received Castile; the second, Alfonso, Leà ³n; and the region of Galicia was carved out of the northwest corner to create a separate state for Garcà ­a. The three brothers proceeded to fight one another for the entire kingdom of Ferdinand: Sancho and Alfonso together fended off Garcia and then fought each other. El Cids first military appointment was as standard-bearer and commander of troops for Sancho. Sancho emerged victoriously and reunited their fathers possessions under his control in 1072. Sancho died childless in 1072, and his brother Alfonso VI (ruled 1072–1109) inherited the kingdom. Having fought for Sancho, Rodrigo now found himself in an awkward situation with the Alfonso administration. According to some records, the breach between Rodrigo and Alfonso was healed when Rodrigo married a woman named Jimena (or Ximena), a member of a high-ranking Asturian family in the mid-1070s; some reports say she was Alfonsos niece. A 14th-century romance written about El Cid said he killed Jimenas father the Count of Gomez de Gormaz in battle, after which she went to Ferdinand to beg for redress. When Ferdinand refused to pay, she demanded Rodrigos hand in marriage which he willingly gave. El Cids main biographer, Ramà ³n Menà ©ndez Pidal, thinks that is unlikely since Ferdinand died in 1065. Whoever she was and however their marriage came about, Ximena and Rodrigo had three children: Cristina, Maria, and Diego Rodriguez, all of whom married into royalty. Diego was killed at the battle of Consuega in 1097. Despite his presence serving as a magnet for Alfonsos opponents, Dà ­az served Ferdinand loyally for several years, while Ferdinand waged war against Almoravid invaders. Then, after leading an unauthorized military raid campaign into the Muslim-controlled taifa Toledo, which was a tributary kingdom of Leon-Castile, Dà ­az was exiled. Fighting for Saragossa Upon exile, Diaz went to the Muslim taifa Saragossa (also spelled Zaragoza) in the valley of the Ebro, where he served as a mercenary captain with considerable distinction. Saragossa was an independent Arab Muslim state in Al-Andalus, which at the time (1038–1110) was ruled by the Banu Hud.  He fought for the Huddid dynasty for almost ten years, scoring significant victories against both Muslim and Christian foes. Famous battles which El Cid is known for were the defeat of Count Berenguer Ramon II of Barcelona in 1082, and of King Sancho Ramirez of Aragon in 1084. When the Berber Almoravids invaded the peninsula in 1086, Alfonso recalled Diaz from exile. El Cid willingly returned and was instrumental in the defeat at Sagrajas in 1086. He stayed in favor with Alfonso for only a brief time: in 1089 he was exiled again. Rodrigo gained his nickname El Cid at some point during his military career, perhaps after his battles at Saragossa. The name El Cid is a Spanish dialect version of the Arabic word sidi, meaning lord or sir. He was also known as Rodrigo el  Campeador, the Battler. Valencia and Death After being exiled from Alfonsos court for the second time, El Cid left the capital to became an independent commander in the eastern part of the Iberian peninsula. He fought and extracted enormous amounts of tribute from the Muslim taifas, and, on June 15, 1094, he captured the city of Valencia. He successfully fought off two Almoravid armies who attempted to dislodge him in 1094 and 1097. He established himself as an independent prince in the region based at Valencia. Rodrigo Dà ­az de Vivar ruled Valencia until his death on July 10, 1099. The Almoravids recaptured Valencia three years later. El Cids Legends There are four documents which were written about El Cid during his lifetime or shortly thereafter. Two are Islamic, and three are Christian; none are likely to be unprejudiced. Ibn Alcama was a Moor from Valencia, who witnessed and wrote a detailed account of the loss of that province to El Cid called Eloquent Evidence of the Great Calamity. Ibn Bassam wrote a Treasury of the Excellences of the Spaniards, written in Seville in 1109. The Historia Roderici was written in Latin by a Catholic cleric sometime before 1110. The poem Carmen, written in Latin about 1090, extols the battle between Rodrigo and the Count of Barcelona; and the Poema del Cid, was written in Spanish about 1150. Later documents written long after El Cids life are even more likely to be fabulous legends rather than biographical sketches. Sources Barton, Simon. El Cid, Cluny and the Medieval Spanish Reconquista. The English Historical Review 126.520 (2011): 517–43.Barton, Simon and Richard Fletcher. The World of El Cid: Chronicles of the Spanish Reconquest. Manchester: Manchester University Press, 2000.Fletcher, Richard A. The Quest for El Cid. New York: Oxford University Press, 1989.Pidal, Ramà ³n Menà ©ndez. La Espaà ±a Del Cid. Trans. Murray, John and Frank Cass. Abington, England: Routledge, 2016.

Responses to Questions About Capitalization

Responses to Questions About Capitalization Responses to Questions About Capitalization Responses to Questions About Capitalization By Mark Nichol Here are three questions I received recently from Daily Writing Tips readers concerning capitalization, along with my replies. 1. I was taught that president is always capitalized when referring to the US President. A few publications uppercase president even in isolation when it refers to the US leader (â€Å"The President will discuss the issue during his speech†), but most commonly it is capitalized only as a title before the name of anyone designated a president (â€Å"President John Smith will discuss the issue with the college faculty†). I’m not aware of any writing or editing resources, other than style guides for these outlier publications, that call for capitalization in all cases. This â€Å"rule† may have been passed on to you by someone who misunderstands the prevailing style precept or adheres to the style of a publication that treats president as an exception to normal capitalization rules. (Teachers, parents, and others, when they teach such â€Å"facts,† are not necessarily reliable.) 2. In the sentence â€Å"We went to our Grandpa John’s house,† is â€Å"Grandpa John† correct, or should grandpa be lowercased? There’s a fine line in such usage, one I learned only after I had been in publishing for many years: If you use a term of family relationship before a first or last name with no preceding pronoun (â€Å"I got a call from Grandpa John†), it’s considered a title (as, for example, in â€Å"Judge Smith† or â€Å"Captain Jones†), so capitalize grandpa. But if you precede the term with a pronoun, as in your example, grandpa becomes merely a descriptive term, one akin to friend (â€Å"my friend Mike†), for example, or neighbor (â€Å"their neighbor Jane†). So, in your example, because of the preceding our, â€Å"grandpa John† is correct. 3. Why is Jewish capitalized, when black isn’t? Some publications capitalize black when referring to ethnicity (and treat white and other skin-color labels the same way), but because such designations encompass a nebulous category, most style black and similar terms lowercase. Jewish, on the other hand, though it also refers to a diverse population, denotes those whose culture (and religion) derives from a more specific origin. (See this post and some of its comments, which point out the inadequacy and inaccuracy of such labels.) 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:How to Format a UK Business Letter7 Patterns of Sentence StructureEbook, eBook, ebook or e-book?

Operating system new and old one Essay Example | Topics and Well Written Essays - 500 words - 2

Operating system new and old one - Essay Example Indeed, the evolution of OS correlates with the growth in IT and computer needs. Examples of old operation system include Admiral Operating system for Honeywell 800/1800, Atlas I Supervisor that introduced system calls and virtual storage for the first computer. We also have the SCOPE operating systems developed in the 1960s that enabled batch processing and the MACE operating system for sharing time. The Michigan Terminal System (MTS) and MUSIC/SP are also examples of old OS developed for early computers like IBM. However, the complexity of new hardware and application programs led to the development of new OS. Indeed, the old OS lacked important features that are present in new OS such as the capacity to run third-party applications and multiple applications at once. Examples of new OS include Microsoft Windows, Android, IBM z/OS, Mac OS X, iOS, and Linux (Computer Hope 1). Most new OS adopt a touchscreen input design since it applies to portable devices. Notably, Microsoft Windows is the most dominant OS used in PCs, IBM, and smartphones (Computer Hope 1). The Apple Mac OS applies only in Apple computer operating system and on Macintosh computers while Android OS is applicable in all Android compatible phones (Computer Hope 1). Moreover, Linux is a new OS applicable in PC and IBM compatible computers while iOS operates with the Apple iPhone (Computer Hope 1). Notably, the choice of an OS depends on the hardware though all operating systems offer a graphical user interface that entails a des ktop and the capacity to manage files and folders. The early OS embraced diversity where technicians produced multiple OS to apply in a specific mainframe computer. However, the old OS had different command models, operating protocols, and operating tools. The development of new computers and hardware resulted to the introduction of new OS where the technicians adjusted, retested, and restructured the applications to accommodate the new OS. The new OS