Atchafalaya: River Control :: essays research papers

  Ã‚  Ã‚  Ã‚  Ã‚  The Atchafalaya is the most original basins because it has a growing system with very stable wetlands. It is also the biggest river swamp in North America but has lost about 3,760 acres between 1932 and 1990. The loss of the wetlands is primarily due to erosion, human activities, and natural conversion. Many human activities, such as oil and gas pipelines, have interrupted the movement of flow and sediment within the wetlands that it is another factor in the loss of acres for the Atchafalaya. But there is not a total loss in this, the Atchafalaya have also positive outlooks on things. The basin consists of more fish compared to any other natural water system in North America. Let alone the production and distribution of three types of crawfish found in Atchafalaya. The crawfish is the main moneymaker for New Orleans fish markets. But the crawfish may only resemble 10-20% of what is caught. Most of it results in bycatch, organisms caught in the shrimp nets that ar e discarded, and the Atchafalaya is seen some times as a floating graveyard of different expired species.   Ã‚  Ã‚  Ã‚  Ã‚  Unfortunately, natural delta growth has been hampered by dredging activities along the main navigation channel. Dredge materials have been placed along side the channel, there by choking off the natural supply of fresh water and sediment to the marsh. TO solve this problem Atchafalaya sediment projects were designed to restore fresh water and sediment delivery processes to the Atchafalaya delta. Within 20 years, this is expected to create an additional 3,000 acres of wetland habitat.   Ã‚  Ã‚  Ã‚  Ã‚  Out of the 50,000 acres of Atchafalaya, three fourths of it is privately owned. The only way this is determined is if the land accretes from the shore of a lake or a bayou, it is the property of an owner. But if the land accretes as an island, the state owns it; making it an imbalance between government and private landowners. Most landowners are not looking at Atchafalaya as a historical landmark, but for what is worth under the water’s surface as money value. These wetlands support a 1 billion dollar annual fishery industry, therefore making these wetlands a positive outlook on the employment opportunities for the Louisiana people. Many fishermen make a living off of the marine species inhabiting the Atchafalaya. But the employment for this occupation is decreasing because of the land loss. Making it difficult for fishermen to understand what is government owned and what is privately owned.

Web Du Bois and Double Consciousness

W. E. B. Du Bois: Double-Consciousness Ashanti Johnson SOC101 Lestine Shedrick October 18, 2011 W. E. B. Du Bois (1968-1963) was a huge contributor to sociology through the eyes and experience of an African-American scholar (Vissing, 2011). Du Bois was an author, activist and student of Black sociology. In his 1897 article, Strivings of the Negro People†, Du Bois introduced the term â€Å"double-consciousness†, a concept I believe to be just as relevant in today’s African-American communities. Double consciousness refers to what Du Bois considered an absence of â€Å"true self consciousness† (Du Bois, 1897) amongst Africans in America. In place of that absence, lies a dual awareness- awareness of one’s self combined with an awareness of how others perceive you. Is being an American a contradiction to Black identity, even in contemporary society? In his 1903 book, ‘The Souls of Black Folk’, Du /bois gives an analysis of African-Americans and double-consciousness, that Black people are caught between separate self conceptions, as an American and as an African. â€Å"The negro ever feels his two-ness, an American, a negro, two souls, two warring ideals and one dark body whose dogged strength keeps it from being torn asunder† (Du Bois, 1903). Du Bois broke his concept of double-consciousness down into three manifestations: First, the power of White stereotypes on Black life and thought. Second, racism and the exclusion of Black Americans from mainstream American society. Lastly, Du Bois points out the internal conflict between being of African descent and being an American. What is the power and influence of White stereotypes on the everyday lives of African-Americans today, in the 21st century? We live in a society that, many could argue, is saturated with Black culture. Commercial television, film and radio are largely influenced by African-American language, imagery and music. Examples of what used to be considered African-American youth vernacular, have seeped into mainstream culture. Words and phrases such as â€Å"bling† and â€Å"you go boy† are not Black slang, but American slang. The continued commercial inclusion of African-American images, language and music, does not eliminate double-consciousness- it may, in fact, magnify it. The stereotypes and images of Black people in America have evolved since Du Bois coined his term in 1897, but even the ever-changing understanding of Black culture leaves most African-Americans trapped in a conflict of who they are versus who they are believed to be in the eyes of America. On one hand, Africans are credited with inventing many genres of sound, dance, art and athletic styles. Although there are many groundbreaking contributions in math, medicine and science, Africans are not â€Å"popular† for these attributes. Because of this, many African-American parents keep their children from concentrating on such areas of strength as dance, music or sports in order to keep them away from a stereotypical field of study. Double-consciousness will have a talented athlete fore-go a sports career so that they are not considered â€Å"just another ball player†. When we think of Black Americans being excluded from mainstream American society, we consider the generations leading to the civil rights movement. Today, our President is an African-American, so surely this issue is no longer relevant. Racism cannot flourish in contemporary America, right? According to Merriam Webster’s Dictionary, racism is â€Å"a belief that some races are by nature superior to others† and the â€Å"discrimination based on such beliefs† (Webster, 2011). We now live in an anti-racism society. It is frowned upon to act or react in any way that could be construed as racist. Our society has laws in place which make racist actions in the workplace, school or even in public- illegal. The conflict of double-consciousness still exists in this modern, anti-racist America. Perhaps even more frustrating for today’s African-American, is living with the reality of racial tension in a society refusing to admit that such tension still exists. Du Bois spoke of internal conflict as being the most significant manifestation of double-consciousness. There is an inner conflict between being of both American and African lineage. African-Americans are a special group of immigrants who did not choose America as their new home. It was slavery that brought the African to America for generations of forced labor. The knowledge that most of the African culture, language, history and experience, was lost to American Africans after the slave trade, helps fuel the inner conflict. Where should the African-American feel his strongest connection? Africa? America? In conclusion, double-consciousness impacts the African-American today just as it did in the early 1900’s. W. E. B. Du Bois described his concept as â€Å"a world which yields no true self-consciousness, but only lets him see himself through the revelation of the other world† (Du Bois, 1903). Today’s politically correct society tends to use the word â€Å"color blind†, intended to show an acceptance for all people, regardless of race or color. Today, the double-conscious African-American must continue the search for his conscious identity in a society which has gone from color-racist to color-blind in a matter of a few decades. References Du Bois, W. E. B. (1897, August). Strivings of the negro people. The Atlantic, Du Bois, W. E. B. (1903). The souls of black folk. Chicago: McClurg and Company. racism. 2011. In Merriam-Webster. com. Retrieved October 18, 2011, from http://www. merriam-webster. com/dictionary/racism Vissing, Y. (2011). An introduction to sociology. San Diego, CA: Bridgepoint Education

Database Management Systems ( Rdbms ) Essay - 1033 Words

Preference of B+ Tree over other structures Sarthak Anand(A20389087), sanand13@hawk.iit.edu Abstract—The purpose of this paper is the discuss the working of a B+ Tree and understand why it is preferred over other types of structures in database systems. Keywords—B+ Tree, B Tree , indexing. I. INTRODUCTION A database management system (DBMS) is a combination of programs that gives the ability for you to store, extract and modify information from a database. There exist many different types of database management systems, ranging from small systems that run on personal devices to large systems that run on mainframes. Relational Database Management Systems (RDBMS) are the most popular database management systems used today. SQL (Sequential Query Language) is generally used to implement RDBMS. In RDMS, data is stored in tables and therefore the data is stored in rows and columns. RDBMS forms the base for all commercially used database management systems like Oracle, IBM DB2, MySQL etc. II. Indexing Data in a database are stored in ordered manner regardless of the structured being used. The data is stored in an ordered manner by using a primary key and unique identified value. This is known as indexing. III. types data structures Various types of data structures are used in a RDBMS. For example: Sequential Indexing, B Tree and B+ Tree. A. Sequential In this type of data structure, the records are ordered in a sequential manner. An index file keeps a track of the records byShow MoreRelatedRelational Database Management System ( Rdbms )996 Words   |  4 Pagesevaluation of how Relational Database Management System (RDBMS) can be applied to improve organization and business effectiveness. 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