Stream Order - The Classification of Streams and Rivers

One of the most important aspects of physical geography is the study of the worlds natural environment and resources—one of which is water. Because this area is so important, geographers, geologists, and hydrologists alike use stream order to study and measure the size of the worlds waterways. A stream is classified as a body of water that flows across the Earths surface via a current and is contained within a narrow channel and banks. Based on stream order and local languages, the smallest of these waterways are also sometimes called brooks and/or creeks. Large waterways (at the highest level the stream order) are called rivers and exist as a combination of many tributary streams. Streams can also have local names such as bayou or burn. How It Works When using stream order to classify a stream, the sizes range from a first-order stream to the largest, a 12th-order stream. A first-order stream is the smallest of the worlds streams and consists of small tributaries. These are the streams that flow into and feed larger streams but do not normally have any water flowing into them. Also, first- and second-order streams generally form on steep slopes and flow quickly until they slow down and meet the next order waterway. First- through third-order streams are also called headwater streams and constitute any waterways in the upper reaches of the watershed. Over 80% of the world’s waterways are estimated to be these first- through third-order or headwater streams. Going up in size and strength, streams that are classified as fourth- through sixth-order are medium streams, while anything larger (up to 12th-order) is considered a river. For example, to compare the relative size of these different streams, the Ohio River in the United States is an eighth-order stream while the Mississippi River is a 10th-order stream. The world’s largest river, the Amazon in South America, is considered a 12th-order stream. Unlike the smaller order streams, these medium and large rivers are usually less steep and flow more slowly. They do however tend to have larger volumes of runoff and debris as it collects in them from the smaller waterways flowing into them. Going Up in Order If, however, two streams of different order join neither increases in order. For example, if a second-order stream joins a third-order stream, the second-order stream simply ends by flowing its contents into the third-order stream, which then maintains its place in the hierarchy. Importance Stream order also helps people like biogeographers and biologists in determining what types of life might be present in the waterway. This is the idea behind the River Continuum Concept, a model used to determine the number and types of organisms present in a stream of a given size. More types of plants, for example, can live in sediment-filled, slower flowing rivers like the lower Mississippi than can live in a fast-flowing tributary of the same river. More recently, stream order has also been used in geographic information systems (GIS) to map river networks. The algorithm, developed in 2004, uses vectors (lines) to represent the various streams and connects them using nodes (the place on the map where the two vectors meet.) By using the different options available in ArcGIS, users can then change the line width or color to show the different stream orders. The result is a topologically correct depiction of the stream network that has a wide variety of applications. Whether it is used by a GIS, a biogeographer, or a hydrologist, stream order is an effective way to classify the world’s waterways and is a crucial step in understanding and managing the many differences between streams of different sizes. Sources Horton, Robert E. â€Å"EROSIONAL DEVELOPMENT OF STREAMS AND THEIR DRAINAGE BASINS; HYDROPHYSICAL APPROACH TO QUANTITATIVE MORPHOLOGY.†Ã‚  GSA Bulletin, GeoScienceWorld, 1 Mar. 1945.â€Å"River Continuum Concept - Minnesota DNR.†Ã‚  Minnesota Department Of Natural Resources.Water Quality, Center for Educational Technologies.

Use Of Traditional Chinese Medicine During The Treatment...

The Use of Traditional Chinese Medicine in the Treatment of Schizophrenia Shoanie Young Spring 2015 Part I: Biomedical Perspective Introduction Schizophrenia is a complex psychotic disorder evident by impaired thinking, emotions, judgment and behaviors. The person’s grasp of reality may be so disordered that they are unable to filter sensory stimuli and may have intense perceptions of sounds, colors, and other features of their environment. Although there are different levels of severity in symptoms, the Gale Encyclopedia of Medicine (Fundukian, Ed., 2014) states that schizophrenia may typically interfere with a person s ability to think clearly and to know the difference between reality and fantasy. People with schizophrenic symptoms have hallucinations and delusions, and often have difficulty with everyday life. It is a complicated disease that is not well understood and carries significant stigma for its sufferers. The prevalence of schizophrenia is thought to be about 1% of the population around the world. The disorder is considered to be one of the top ten causes of long-term disability worldwide. Late adolescence and early adulthood are periods for the onset of schizophrenia. In 40% of men and 23% of women diagnosed with schizophrenia, the condition manifested before the age of 19 (Addington, Cadenhead, Cannon, 2007).These are critical years in a young adult’s social and vocational development. The term schizophrenia was first used in 1908 byShow MoreRelatedChanging Attitudes toward the Mentally Ill and their Treatment in Japan1883 Words   |  8 PagesIntroduction Historically, the treatment of the mentally ill has often been poor around the world. Hospitals like Bethlehem Hospital (Bedlam) in London, Lunatics Tower in Vienna, and La Bicetre in Paris treated their patients notoriously bad. The â€Å"unbalanced† were locked in asylums, rarely released. 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Types of Story Leads Free Essays

Lead Every news story begins with an introduction called the lead. This may be a single word, a phrase, a clause, a brief sentence, an entire paragraph or a series of paragraphs. The main functions of the lead, aside from introducing the news story, are to tell the story in capsule form and to answer right away the questions the reader would naturally ask. We will write a custom essay sample on Types of Story Leads or any similar topic only for you Order Now A good lead answers all the important questions of the reader, indicates the attendant circumstances if they are all important, and arouses the readers’ interest to continue reading the story. The lead is the beginning, the most important structural element of a story. Charnley (1966) stated that, â€Å"an effective lead is a brief, sharp statement of the story’s essential facts. † The lead is usually the first sentence, or in some cases the first two sentences, and is ideally 20-25 words in length. Leads should: * open with bright, interesting, colorful nouns and verbs be brief (often only 20-30 words) be, for the most part, one sentence in length be crisp and to the point effectively summarize the story â€Å"feature the feature† include attribution (the source) if needed for credibility ive the title for any person mentioned not include personal pronouns such as â€Å"we† and â€Å"you† not include reporter opinion Summary lead The typical lead is called a summary lead or straight summary lead, and it, of course, summarizes the story. The journalist must, therefore, write a clear, fairly short sentence that reveals all, telling the end result of the story. Someone should be able to read the lead and be informed about what happened without reading the rest of the story. A summary lead should answer as many of the 5W’s and H as possible: who, what, when, where, why and how. The 5 W’s and H provide the news writer with quick and convenient means of organizing the lead of a story. They also provide the framework or structure for organizing the lead of a story. This is one of the most common forms of hard news story. But, the question is that how do we decide what is most important and what should follow in descending order of importance? Here, we must use our own judgment. Some questions to ask: What will affect the readers the most? What questions does the lead raise that need to be answered immediately? What supporting quotes are strongest? Below are examples of leads which feature the various 5W’s H. The words that make up the â€Å"W† that is featured are in bold face type. | WHO lead Used when the person involved is more prominent than what he does or what happens to him. -Reckless drivers who don’t seem to be drunk may well be high on cocaine or marijuana, according to roadside tests that indicate drugs may rival alcohol as a hazard on the highway. -Monica Lewinsky, the former low-level aide at the center of the current White House investigation, is willing to submit to a polygraph examination in exchange for complete immunity from prosecution, her lawyer said Sunday. WHAT lead Used when the event or what took place is more important than the person involved in the story. -A pack of wild monkeys terrorized a seaside resort town south of Tokyo last week, attacking 30 people and sending eight of them to the hospital with bites. (This also co-features the who. ) -A Soyus spacecraft docked flawlessly with the Mir space station Saturday, bringing a fresh crew of two Russian cosmonauts and a Frenchman to the orbiting outpost — along with a bottle of French wine. WHY lead Used when the reason is more prominent or unique than what happens. With more amateurs cutting wood for use as an alternative to high-priced heating oil, hospitals are coping with an increasing number of injuries due to chain-saw accidents, reported the American College of Surgeons. WHERE lead Used when the place is unique and no prominent person is involved. -Red China will be the site of the next International Film Festival. WHEN lead Rarely used as the reader presumes the stor y to be timely. However, this lead is useful when speaking of deadlines, holidays and important dates. -Today, almost to the hour, the Revolutionary Government was proclaimed by President Corazon Aquino. HOW lead Used when the manner, mode, means, or method of achieving the story is unnatural way. -Louisiana-Pacific Corp. plans to sell seven out-of-state lumber mills and expand production at 17 others in order to boost output by up to 40 percent. (The how in this lead is also the what. ) Novelty leads Novelty leads differ from  summary leads in  that they make no attempt to answer all of the five Ws and the H. As  the  name  implies novelty  leads are novel. They   use   different   writing   approaches   to   present different   news   situations   to   attract   the   reader’s   attention and   arouse   curiosity. Type of Novelty Lead| Example| CONTRAST: The contrast lead compares two opposite extremes, generally dramatize a story. The comparisons most frequently used are tragedy with comedy, age with youth, the past with the present and the beautiful with the ugly. | In 1914, the United States entered the First World War with a Navy of 4,376 officers, 68,680 men, 54 airplanes, one airship, three balloons and one air station. Today, there are more than 500,000 active duty officers and enlisted personnel, 475 ships and 8,260 aircraft in our Navy. PICTURE: The picture lead draws a vivid word of the person or thing in the story. I t allows the reader to see the person or thing as you saw it. | Thin and unshaven , his clothes drooping from his body like rags on a scarecrow, Frank Brown, USN, today told naval authorities about six-week ordeal in an open rubber boat in the South China Sea. The new principal, although only at his early thirties, is already silver-haired. He seldom talks, but when he does, he talks with sense. | FREAK: The freak lead is the most novel of the novelty leads. As the name implies, the freak lead employs a play on words, alliteration, poetry or an unusual typographical arrangement to introduce the facts in the story and to attract the reader’s attention. | For sale: One guided missile destroyer. The Navy is thinking about inserting this advertisement. †¦ $ammy $mith, who i$ just $even, wa$ digging in the $and at $amsons beach today and gue$$ what he found? | BACKGROUND: The background lead is similar to a picture lead, except for one important difference. It draws a vivid word picture of the news setting, surroundings or circumstances. High seas, strong winds and heavy overcast provided the setting for a dramatic mission of mercy in the North Atlantic on the first day of the new year. The PNC campus was turned into a miniature carnival ground Sept. 1 during the 85th F-Day celebration of the College. Decorated with buntings and multi-colored lights, the college quadrangle was a grand setting for a barrio fiesta. | PUNCH: The punc h lead consists of a blunt, explosive statement designed to surprise or jolt the reader. | The president is dead. Friday the 13th is over, but the casualty list is still growing. Victory Day! Magsaysay High School celebrated March 18 its 5th victory in the city-wide journalism contests. | QUESTION: The question lead features a pertinent query that arouses the readers’ curiosity and makes them want to read the body of the story for answers. Phrase this lead as a rhetorical question. | How does pay in the Navy compare with civilian wagers? Has the space age affected the role of the Navy? | QUOTATION: The quotation lead features a short, eye catching quote or remark, usually set in quotation marks. A quote lead should be used only when it is so important or remarkable that it overshadows the other facts in the story. | â€Å"You really don’t know what freedom is until you have had to escape from Communist captivity, † says Bob Denglar, a former Navy lieutenant and an escape from a Viet Cong prison camp. â€Å"The youth in the New Republic have become partners of the government in its struggle for progress and advancement,† thus spoke PNC Dean of Instruction Rebecca D. Alcantara to some 400 student delegates to the 1998 Hi-Y-H-teens Leadership Training Seminar held Dec. 6-39 at the College Auditorium. | DIRECT ADDRESS: The direct address lead is aimed directly at the readers and makes them collaborators with facts in the story. It usually employs the pronouns â€Å"you† and â€Å"your. † | Your pay will increase by ten percent next month. You can receive a college education Navy expense if you qualify under a new program announced this week. | References : http://journalism20. nuvvo. com/lesson/7587-lead-of-a-news-story www. angelfire. com http://photographytraining. tpub. com How to cite Types of Story Leads, Papers