Choosing a Secondary Storage Essay Example for Free

Choosing a Secondary Storage Essay Introduction Nowadays, data is the lifeblood for today’s digital organization. The integrity, availability and the protection of the date are vital to a business productivity and successfulness, therefore storage solutions are still the priority in IT budgets. GJ Consultation Sdn Bhd currently is facing a storage problem. Their storage system performance’s bottlenecks having a serious impact on their business productivity. The sluggish primary storage performance and maintenance issue were slowing down the company’s response to customer request which affecting the overall business productivity. Besides, their backup solution was becoming difficult to effectively protect date within ever shrinking back up window. Thus GJ Consultation Sdn Bhd now needed to search for a secondary storage which can solve all the problems. They require a storage that can optimize storage response time, ensure disaster recovery, implement a highly solution and the most important is to ensure a better access to customer date and protect more than 100TB of data without adding heavy cost and complex management. The era of data and information clearly shows that there is a rising demand for more storage. There are a numbers of options available in the market. The most prevalent would be direct-attached storage (DAS), network-attached storage (NAS) and storage area network (SAN). There is no one is the best for everyone. It is important to focus on the specific needs and the business goals of the organization. Therefore, there are several factors to consider which include capacity, performance, reliability, data protection and budget concerns. We will look into that in more detail later. Many people will argue that SAN are more powerful that NAS, but for GJ Consultation Sdn Bhd, I suggest that the Network Attached Storage (NAS) would be the most suitable storage solution to solve their storage problems. The factors that affecting of choose a secondary storage will be discussed in the next section. NAS is a data storage systems with a specialized hardware and software attached to a network. NAS products is an information data storage server, they have converged to serve all in one servers for date based applications. A NAS is to provide storage and access to data. Picture 1.1 show the Network-attached storage. 2.0 Factors affecting of choosing a secondary storage A storage solution can be defined as a hardware whose main function is to store and sharing data or information. There are many types of storage with many different functions. The storage for business usually is in the form of servers. To choose a right storage for your business, there are several factors that need to be considering when choosing storage which include reliability, capacity and scalability, the budget concern. Capacity The first factor that need to taken into consideration when choosing storage is the capacity of the storage. It is very important that we should very clear that what is the size and scope of the data that you want to store and what capacity is needed to store it? The firm should choose the storage which suitable for the organization or business purpose and functions. The firm should also consider the types of data to store and the frequency of access the data when choosing a storage. NAS systems can provide many terabytes of storage in high density. GJ Consultation Sdn Bhd is a consulting firm which provides services in finance and business strategy to leading law firms and government agencies. They have a lot of date that need to store and share with customer which some of it might sensitive. Therefore it is suggested that they should choose a file-level storage. A NAS device is a single storage unit best suited for file-level storage connected directly to network. NAS often configures especially for file- sharing. Performance Speed Different storage will have different return rate of speeds for data. If the date store is monthly use, means that you no need the fastest storage; if the date store will be use very frequently, is better to choose the fast performance storage. Knowing this can help you save in cost. A business normally will look for a better file access speed. GJ Consultation might need a fast performance storage since they are providing consultant services to customers which the date stored might be use frequently and need to response to customers very quickly. Transfer speed over the network is the primary indicator of a NAS because it uses file-level protocol when uploading or downloading large files. NAS can provide performance benefits. For example, NAS can take over the work of serving the email data, freeing resources on the email server for email-specific processes. Scalability Scalability is important in terms of both computing power and storage capacity. The performance and capacity should scale independently of one another. Scalability is important because the ability of the storage would need to be expanded in future in order to cope with increased use. NAS is a suitable storage which suggested for GJ Consultation Sdn Bhd because it is easy to set up and easy to use, even a non IT based staff can manage the NAS. Reliability Reliability of storage also is one of the factors which is very important and need to be concerned. Reliability is important because the loss of data and downtime can lead to loss in revenue and threaten the survival of the business. In today’s world, most of the people demand a highly reliability, shared storage device that is accessible to multiple network devices. NAS is the newer version of storage after DAS (data-attached storage), it use of highest-performing drives with premium components that been qualified to extreme premium environment. NAS is suitable for GJ Consultation Sdn Bhd since it produce the most reliable and highest-performance data storage solution. NAS is same reliable with normal server. From the storage functional system, concepts are equally. They both can act as server. Even lower end NAS systems have the high reliability features such as RAID and hot swappable drives and components. Cost or budget concern Usually is the main concern of an organization to purchase a certain products or services. Cost in here not only means the equipment cost, but management and maintenance cost as well. Management and maintenance cost at here meaning that the cost to maintain the storage, the cost to hire the IT consultant to give training on the ways to use the storage and so on. GJ Consultation Sdn Bhd is having a storage problem and they want to buy a suitable storage which can help them solve the problem they are facing currently without adding heavy cost for their business. Here, it is suggested to the firm that network-attached storage (NAS) would be a suitable storage solution which is less expensive if compare to others. The management and maintenance cost is lower also because NAS is easy to set up and easy to use. Security The firms have a lot of date and some of the data might be sensitive which relate to legal need to be store and share between customers, thus data protection can be one of the factors that need to be taking into consideration also. NAS provides data protection benefits in data protection plan and provide redundant storage for sensitive data. Every NAS appliance includes user security to allow or restrict file access based on username and passwords. Management Management here means the administrator who in charge of the storage solution. He need to be aware of the challenges that might be arise for the solution and consider what are the monitoring tools are available to monitor performance and warn for the possible failures. The storage should not be too complex to manage in order to save the cost of management and maintenance. 3.0 Advantages of seeking a higher performing storage A secondary storage device for computers are not only for storing back up files, they also allow computers users to expand their ability to transfer a large amounts of data from one computer to another. For GJ Consultation Sdn Bhd, as I mention earlier, the suggested storage that most suitable if the Network Attached Storage (NAS). There are several advantages of seeking a higher performing storage which suggested here. Mass Storage The capacity of the secondary storage is very high that allow us to store a large amount of data. We can store the data into the secondary storage in the form of gigabyte and terabytes. In that case, we can back up the all data easily and need not worry for losing data. Usually an organization will have plenty of data that need to be stored to support the business operations. For this, the primary storage would not be able to do it. NAS provide an efficient of sharing a large individual files among individual users. NAS can store and manage the data up to terabytes level. Besides, NAS allowed us to add more storage without shutting down the network. Reliability Security It is considered safe that storing data into the secondary storage. The data can be store in the secondary storage which is the NAS in permanent form. Therefore the firm no needs to worry of loss of data or lack of data even after many years later. NAS provide data protection benefits so that it is safe to store the sensitive data. This is one of the advantages by choosing NAS because GJ Consultation Sdn Bhd is handle highly sensitive data. The data stored on live database server will be stored to NAS in the same time so that the data will exist even if the database server faced physical failure. Performance The computer could have a better performance with adding a secondary storage. This can help users to increase the speed of storing data, access data or transferring data which indirectly increase the productivity of the firm. With a secondary storage, the computer of the organization can fully operate effectively. Performance of serving files can be increase by a NAS because NAS included file-system storage. NAS is a system used for storing files in a central location, accessible through a network, so that other computer systems can store and retrieve the data files. Comfort The date store in the secondary storage can be accessed easily and immediately. The data can share with others such as customers very easily and convenient. This can increase the productivity of the organization and contribute to gain profit for the organization. NAS is a server which has the dual function of application serving and files sharing and provides a lot of flexibility in data access by virtue of being independently. The utility rate of NAS is high because the storage is shared across multiple servers. Multiple NAS systems or devices can be manage by a central and then it can conserving the time and resources, Economic The cost of a secondary storage is cheaper than adding the memory of the computer. For GJ Consultation Sdn Bhd, NAS is suggested to them as their secondary storage rather than a SAN. SAN requires the purchase of a Fibre Channel which is very expensive; NAS requires a standard Ethernet NIC which is much cheaper. This indirectly reduces the cost for storage devices. Furthermore, SAN is very hard to understand, it will cause the management and the maintenance cost increase; however NAS is easy to understand and easy to maintain, indirectly reduces the cost of management and maintenance for the firm. NAS is a simple and cost-effective way to achieve fast data access for multiple clients at the file level. 4.0 Disadvantages of seeking a higher performing storage There is nothing perfect in this world; there is no any storage which is the best. A secondary storage has several advantages and of course has several of disadvantages. Over Whelmed NAS can be used by many computers on a network. When everyone is trying to access the device at the same time, it might lead to overwhelmed. This could happen because of the limitation of network bandwidth, and the processing power within the device. When there is a large amount of users simultaneously access data, it will create the bottlenecks on the local area network and server. Besides, NAS device could become a single point of failure. To solve this issue, those important files across multiple units should be distribute, schedule and run regular remote backup routines. Financial Budget concern Getting a higher performance of storage, in other words that is one of the expenses cost for the Organization. No matter how valuable is the storage, it still will affect the financial budgeting for the organization for short term. The organization needs to allocate fund for the storage equipment cost, and also for the maintenance and management cost of the storage. This is just a very short term disadvantages because advantages of the secondary storage will contributes profits to the organization and then can cover the cost of getting the storage. Time consuming The staffs of the organization might need times to understand and make use of the secondary storage. The administrator would first study and understand in detail for the storage then he might need to give training to the staffs in order for them to know how to operate and maximize the usage of the storage. This is important because if the secondary storage not fully utilize by the organization would be wastage for the organization. However this might take some times to completely educate everyone in the organization to fully utilize the storage and it is hard to ensure whether the storage has been fully utilized. There will be a wastage and loss of money for the organization if the users of the organization not able to use the storage. That is no point of spending an amount of money for the organization to buying a powerful product but no one can fully utilize it. Backup challenge We can back up the data by NAS but because NAS is file-level storage, which means transferring data and storing data is by file-level. If users have millions of small files, it could be a problem to back up the data because NAS will store the data by file name. NAS cannot do image-level backup and cannot serve raw device. Besides, NAS is difficult to backup the data to tape. Large block of data A NAS is not able to move a large block of data which is important for bandwidth-intensive applications such as imaging, database or transaction processing. NAS does not offer fast data transfer while reducing input/output latency or server workloads. NAS also not provide high volume transaction processing especially the companies that conduct business on the web. Same with the backup issues, if the user has millions of small file that want to store or share to another, NAS is not an option to do that. The only way to solve this without adding budget to seeking for the other storage is adding the capacity of the NAS, since the scalability of NAS is high but of course it has its limit. 5.0 Conclusion Digital assets will only continue to growth rapidly in the future. It is important to choose the right storage and to implement technologies that based on the industry standard which can minimize the interoperability concerns and provides long term investment protection for the organization.

The Thousands Of Idioms In English

The Thousands Of Idioms In English Introduction Language is a major feature of a nation. English language has developed hundreds of thousands of idioms. It has been estimated that about 7,000 idioms are used by a native speakers per week (Cooper, 1999, p. 249). At the same time, grasping idioms can be a great asset to learners in acquiring a new language (Celce-Murcia Larsen-Freeman, 1999, p.36). Idioms are extraordinarily difficult for their flexible structures and figurative meanings (Liu, 2003, p.675). For example, the meaning of high horse has nothing to do with high and horse but means an arrogant people. According to the surface meaning, second language learners can hardly tell its meanings. Also, Language is the most important communication tool. People use language to preserve and transmit human civilization, that is, language conveys the culture. Sapir (1921) observed that culture can be defined as what a human community does and thinks. The function of language is to explain what a thought is. Therefore, language does not exist alone. It is rooted in national culture and reflects national institutions. If culture is regarded as the cradle of language, animal idioms can be seen as the crystallization of culture. Animal idioms are plentiful in English. They prominently reflect English culture. For a long period, studies on animal idioms mainly focus on translation, cross-cultural comparison, literature, and so on. However, there are few studies on English animal idioms acquisition linking to British culture. Animal idioms, like a mirror, can clearly reflect the characteristics of a national culture. Generally speaking, anthropologists are divided into three levels of culture: high culture, popular culture, deep culture. High culture includes philosophy, literature, art and religion. Popular culture refers to customs, etiquette and the interpersonal aspects of life. Deep culture contains the meaning of beauty and ugliness, time orientation, problem-solving methods (Yin Li Han Xiaoling, 2007). High culture and popular culture belong to low context culture; deep culture belongs to high context culture. In this thesis, the key point is to investigate whether the Chinese English learners can unde rstand the low context culture by examining the command of animal idioms. High context culture is out of the scope of this project. Literature Review Culture and Language There are a large number of definitions in culture, but a few of them can be reviewed. The most classical definition of culture is made by Edward B. Tylor (1871), the father of cultural anthropology. The definition describes the culture as a center of society, which is regarded as the first important anthropological theory about culture. Tylor provided that culture is that complex whole which includes knowledge, belief, art, morals, law, customs and any other capabilities and habits acquired by man as a member of a society. He believed that culture is shared by all mankind, all community. Then, following the definitions of sociologists, they believe that culture refers to human attitudes, institutions, and beliefs etc. Reflecting the life of a human community is the key point in culture. Williams (1965) mentions that the definition of culture contains three general categories. First, culture is a state or process of human performance and has certain universal values. Second, culture is the body of intellectual and imaginative work. It records human thought and experience. Finally, third, culture refers to a society, that is, culture expresses certain meanings and values in peoples life. It is not only in art and learning but also in custom and ordinary behavior. Also, Deng and Liu (2007) point out that culture illustrates the ways of a people, that is to say, culture refers to the entire way of life of a society. Language is the carrier of culture which contains peoples daily life. Writing in 1950, Luo Changpei who was a famous linguist and educator in China recognizes that language is a crystallization of national culture, which spreads the past, pushes the future. Each language is a living fossil to a nation. Language as the main material has the most direct and close contact to build a culture. Furthermore, language is used for communication. It is impossible to use a language without awareness of its culture. That is to say, language can be a signal to identify different cultures. When language used by particular speakers, it conveys certain context which is how words be chosen, why to choose it, what meaning can be expressed. Language cannot exist without carrying culture meaning. Given the arguments above, the relationship between language and culture can be described as follows: language come from culture and culture embodies the entire way of life of a society. Using language can promotes cultural spread and culture can promote language development. Language and culture work closely and influence each other. Expressing facts, ideas, or events and reflecting the peoples attitudes, beliefs etc. are the most important function of a language. Language exchange actually is cultural communication. Learning a language well must be aware of its culture. Studies on Idioms Smith L.P. (1925, p.167) points out that there is the element of enrichment which is of greater importance, which comes from popular, free and unschooled English. This element consists of what people call idioms. Smith also defines its use in this connection. Idiom is sometimes used to describe the form of speech peculiar to a people or nation; idiom for the meaning is expressed by the French word idiotisme, that is to say, those forms of expression, of grammatical construction, or of phrasing, which are peculiar to a language, and approved by its usage, despite the meanings they convey are often different from their grammatical or logical signification. Makkais Idiom Structure in English, an extended version of his doctorial thesis (1965), identifies two major types of idioms: one is encoding; another is decoding. Makkai finds a rationale to explain this division. The headword listed in the Oxford English Dictionary (OED) (1970) is sense 3a, which also appears in an identical form in the OED (1989): A form of expression grammatical construction, phrase etc., peculiar to a language; a peculiarity of phraseology approved by the usage of a language, and often having significance other than its grammatical or logical one ( cited from Fernando C., 1996, p.3-4). According to Moon Rosamund (1998:4), narrower uses restrict idiom to a particular kind of unit: one is fixed and semantically opaque or metaphorical, for examples, as white as a sheet or cold shoulder. In broader uses, idiom is a general term for many kinds of multiword item, no matter semantically opaque or not. For animal idioms, the form is usually loose, and it mainly focuses on figurative meanings rather than literal meaning, for examples, put the cart before the horse, or straight from the horses mouth. English idioms with the strong feature of rhetoric are formed from long-tem use and their structures are unique and have fixed expression. It contains proverbs, sayings, slangs, and allusions, etc. There are two important characteristics of idioms: one is semantic unity, that is, the overall meaning cannot be tracked from each word, for example, pull all ones eggs in one basket. It means the desperate situation not the surface meaning. Another is the structure of fixity, that is, its structure cannot be altered arbitrarily, for example, kick the bucket. It cannot say kick the pail or be used in the passive voice- the bucket is kicked (Wang Benhua, 2010). Animal idioms and British culture There is a close relationship between animals and peoples lives. On the one hand, animal is the main source of food and clothing for human; the other hand, kinds of animals represent certain images which people pay homage to them. These animals reflect human thought and contain certain national culture. There are three bases to make animal vocabularies to cause cultural meanings. First, derive from animals appearances, physical structure, mentality, behavior. Second, come from cultural content such as fables, legends, religions, physical geography, and customs. Third, be created by association, that is to say, animals are associated with another things which relate to potential cultural psychology (Liao Guangrong, 2000). In the perspective of linguistics, animal images used in idioms have figurative meaning. Idioms linked to animals usually contain metaphors. Animals denote and connote supposed qualities. These qualities are applied to people and human situations. There is a phenomen on that no idiom database contains animal or insect, although many contain hyponyms such as cat, dog, or horse. The reason may be that general words such as animal are too neutral to cause these kinds of institutionalized metaphors, despite the fact that both animal and insect are used in other contexts with metaphorical meanings (Moon, R., 1998, p.196). In the meantime, the formation of animal idioms relies on culture. According to the arguments mentioned above, culture refers to all aspects of a people such as geographical situation, the style of production, and literature etc. In the history, Great Britain was the overlord in the sea. Despite the Europe, other continents were the British colonies. Therefore, British nation could contact with many animal species. Britain is surrounded by islands. Due to the abundant resources from physical geography, animal idioms flourished in the early years of that century. Thereby, English idioms have close contact with sea and fishing, for example, hook ones fish. Comparing with China, Great Britain is filled with small mountains and strait lands. In ancient Britain, horses are main tillable force. The function of horses is above all. Thus, there is particularly large number of horse-related idioms, such as horse of another color, an iron horse, or horse sense etc. In ancient China, the cattle played a significant role. That is why so many idioms related to cattle in China, for examples, niu qi chong tian  ¼Ã…’feng ma niu bu xiang ji etc. These cattle and horses have been portrayed by cultural connotation. In addition, some animal images come from Greek and Roman mythology or Bible, like serpent which means Satan in Bible (Zhao Shuyun, 2010). Animal idioms related studies In the second language learning, correctly using idioms has always been regarded as a tough problem. A learner must recognize the fix structures and given meaning, not only the literal meaning but also the figurative meaning. Figurative meaning refers to metaphors which have close relationship with culture. Whats more, animal idioms are more flexible and oral orientation. It is not easy for second language learners to breach the syntactic, semantic, and pragmatic barriers in idiom learning. Blasko and Connine (2002) made an experiment in comparing Malay and English to investigate second language figurative proficiency. They found two results as follows: First, figurative expressions with an equivalent conceptual basis and linguistic form are the easiest; Second, figurative expressions with an equivalent linguistic form but a different conceptual basis are the most difficult. Lin Weiyan (2003) designed a project to investigate English idiom learning in different cultural background. H e observes that English idioms with same figurative meaning as Chinese are easy to understand comparing with different figurative meaning as Chinese. That is to say, if the English idioms are similar to Chinese ones in expression and meaning, mother tongue will make effectively transfer; if not, mother tongue will make negative transfer. Wu Xudong and Chen Bin (2006) quickly came to the conclusion that the process of conceptual and cultural transfer is the process of comprehending English animal idioms, and Chinese English learners has low capability to comprehend English animal idioms with different metaphors. From the presented studies above, it can be concluded that commanding idioms, especially animal idioms is one of the big obstacles in second language learning. Chinese English learners have the advantage and disadvantage of understanding animal idioms, because there are some similar figurative meanings. But due to the learning environment, Chinese English learners have low capabilities to command animal idioms. Research Question Can the command of English animal idioms promote Chinese English Learners to understand British culture? Hypothesis Due to the relationship with language, animal idioms and culture, command of English animal idioms can promote Chinese English Learners to understand British culture.

Life, Death, and Frankenstein Essay -- Frankenstein Essays

Life, Death, and Frankenstein Since I spent last weekend in Vancouver attending the funeral of a beloved aunt who died on Good Friday, you could say that I've been pondering a lot about death and dying lately. It didn't help either that I chose to bring my copy of Mary Shelley's Frankenstein with me to read on the plane rides there and back, seeing as this story deals with the creation of a new form of life and the deaths that result from it. Being in this rather morbid frame of mind, I decided for this commentary just to take a closer examination of life and death as contained within the kind of gothic narrative of this early science-fiction horror story. It's almost like a Yin-Yang pairing between the two: Victor controls the ability to create Life (an ability that is usually looked on as being feminine) through his scientific and medical knowledge, and the Creature controls the ability to create Death (an ability usually looked on as being masculine) through his incredible strength and physical abilities. But although the Yin-Yang of Taoist thought brings harmony to the universe, this pairing of light and dark brings nothing but destruction to those it touches. So, in Frankenstein, I suppose you could divide the death into two different categories, both centered around Victor: Life from Death, and Death from Life. "To examine the causes of life," Victor tells us through Captain Walton, "we must first have recourse to death." And so he does. After Victor discovers the secret to creating life (what it is we are never told, but if you're inclined to believe the various cinematic treatments of the story, it seems to involve lightening storms and complicated machines), he decides to put this to use and see if he can play... ...ankenberry Cereal available for sale, with cartoonish pictures of Boris Karloff smiling on the front. While they may hold opposing powers of Life and Death respectively, in the end, it is as though neither of these two characters is left with any life between them. Everyone Victor has loved is dead because of the attacks inflicted by his creation. The Creature is not accepted by society because of the appearance given to him by his creator. Neither of them having anything left to live for; they engage in a chase up to the high Arctic where the Creature and the body of his creator disappear into the night. With each of them trying to out-manoeuvre the other, each destroys what his opposite desires the most. In this Life from Death, nothing can lead a true existence. Works Cited: Shelley, Mary. Frankenstein (1818 ed.). New York: W. W. Norton & Company, 1996.

Racism and the Narrative of the life of Frederick Douglass, an American

Examining Prevalent Attitudes on Racism and the Narrative of the life of Frederick Douglass, an American Slave When we look at the issue of racism from a politically correct, nineties perspective, evidence of the oppression of black people may be obscured by the ways in which our society deals with the inequalities that still exist. There are no apparent laws that prohibit or limit opportunities for blacks in our society today, yet there is a sense that all things are not fair and equal. How can we acknowledge or just simply note how past ideologies are still perpetuated in our society today? We can examine conditions of the present day in consideration of events in the past, and draw correlations between old and modern modes of thinking. Attitudes of racism within the institutions of education, employment and government are less blatant now than in the day of Frederick Douglass, none the less, these attitudes prevail. Once Frederick Douglass had developed a reputation as a brilliant speaker he was urged to write his Narrative by one of his mentors, John A. Collins, in order to "dispel growing public doubts about his experiences as a slave."(Miller 1753) As Douglass recounts his personal circumstance the reader is informed of the main issues surrounding slavery. When we look at attitudes held by political figures around this time we get the impression it was never the ambition of the white man to integrate black slaves into society. As Supreme Court Chief Justice Taney explains in the Dred Scott Case of 1846, "{Africans slaves} were not intended to be included under the word "citizens" in the constitution and can therefore claim none of the rights and privileges which that instrument allows"(Roots of Resistance). In th... ...f inequality prevails in our country to this day. This is not to say that the entire white race carries the same bias of their predecessors. However, it's important to consider the ways in which current popular attitudes carry a vestige of attitudes held in the days of slavery. Works Cited Davis, Kenneth C. Don't know much about history. New York: Crown Publishing Inc. 1990 Douglass, Frederick "Narrative of the life of Frederick Douglass, an American Slave" The Heath Anthology of American Literature. Ed. Paul Lauter. Boston: Houghton Mifflin 1998 Miller, James A. "Frederick Douglass 1818-1895" The Heath Anthology of American Literature. Ed. Paul Lauter. Boston: Houghton Mifflin 1998 Roots of Resistance. The American Experience Series. PBS, 1989 Zinn, Howard. A People's History of the United States. New York:Harper Perennial 1995

The Driving Age :: essays research papers

Many teens are interested in being able to drive at a younger age, but it is still unclear if they are able to handle it. If the legal driving age is lowered, are we endangering the lives of teen drivers, as well as the passengers with them? I believe most people want to drive as soon as they can. However, recently the government has been trying to pass laws that may change the current driving age of 16. There are positive and negative aspects to changing the laws that allow the driving age to stay at 16.There have been new bills being proposed that mite be passed. â€Å"The Minister for Urban Services has introduced a Bill (proposed law) into the Assembly. He wants to amend the Road Transport (Driver Licensing) Act 2000. The new Bill is called the Driving Age Amendment Bill. This Bill is intended to raise the age at which people can apply for a learner’s permit and driver’s license.† (Legislative Assembly). This bill will raise the driving age if it is passed b ut the aspects of what will happen should be considered before we change it. There are many different reasons why we should keep it at 16. First off it’s a good working system that we have followed for a long time. Another good reason that helps this concept is that the teenagers are still in school so it’s easier for them to take drivers training. If there are more drivers that ultimately mean that more people will be paying for insurance. There are also the reasons why we should change it from 16. Like for instances most 16 year olds aren’t responsible enough to drive. â€Å"The facts show that younger drivers (those between ages 16 and 25) receive more citations, are more likely to have their driving privilege suspended, and are responsible for more accidents than drivers in any other age group.† (Dr. Steven Evans). Another reason is that it’s a high cost own a car when they are making so little money. If we were to raise the driving age it would most likely be changed to 18. The best reasons for raising it to 18 would probably be that they are more responsible. â€Å"Children are not equipped to handle these vehicles, which are hard for even an experienced, adult driver to handle.† (Ron Shaffer) They have More money because of there jobs and if you go away from home you need a license.

Aluminium is the third most common element on Earth after oxygen and silicon

Aluminium is the third most common element on Earth after oxygen and silicon. The aluminium industry had a Gross Domestic Product of $3.1 billion in1997/98, ranking the aluminium industry amongst Australia's leading manufacturers and employs over 16000 people directly. The total value of export earnings was about $6.3 billion in 1998/99, second only to coal as an export industry for Australia. These facts underline the fact that the aluminium industry is a major asset to Australia and is world competitive. Aluminium is important to us currently and is used from everything from soft drink cans to car bodies to window frames. Aluminium is lightweight, strong, long-lasting, highly corrosion resistant as a protective oxide coating is naturally generated, is an excellent heat and electricity conductor, has good reflective properties, is very ductile, completely impermeable and odourless and totally recyclable. Despite this, less than 200 tonnes in 1885 were produced compared to approximately 22 million tonnes in 1998 – plus some 5 million tonnes of recycled Aluminium. This is because aluminium is so highly oxidized that it can be only refined using huge amounts of electricity and electricity did not become readily available until this century. Thus, it is known as the metal of the 20th century. There are three process involved in the manufacture of Aluminium: Bauxite mining, alumina refinery and aluminium smelting. Raw Materials – Cryolite (Na3AlF6). Sodium Aluminium Fluoride. This reduces the temperature needed to electrolyse the aluminium reducing the cost. It was originally obtained from mines in Greenland, but the supply has depleted and it is now produced synthetically. – Aluminium fluoride (AlF3), calcium fluoride (CaF2) and Lithium Fluoride (LiF) which play the part of reducing the melting point of the mixture. – Alumina (Al2O3). This is obtained from bauxite, a red rock-like material, which also contains a lot of unwanted substances. Bauxite is mined in Western Australia, Queensland and Northern Territory. Bauxite mining leaves a lot of barren areas which will be investigated later. Bauxite and alumina are stored in storage bunkers. To produce aluminium metal, bauxite has to be concentrated, thus removing most impurities. Bauxite is crushed and washed to remove some of the clay and sand then dried in kilns. This is because crushed bauxite is easier to transport. The ore is loaded onto trucks, railway cars, or conveyor belts and transported to ships or refinery. The concentration of bauxite into alumina is called the Bayer process as shown below. Note that the red mud from the refinery must be carefully disposed of and this will be explore in Environmental factors. The Chemical Process To refine aluminium from alumina which contains both aluminium and oxygen, electrolysis is used, in a process known as the Hall-Heroult process. Alumina has to be liquefied (it is mixed with cryolite to reduce melting temperatures) and each cell is supplied with four to six volts and 150,000 amps of electricity. The sequence of creation is: All pots are covered so that exhaust gases are drawn into a large fume duct (will be explored later). As this involves consumable anodes, the pots cannot be sealed and every time a pot is opened, a small quantity of volatile gases escapes. For the safety and comfort of workers, the potroom needs to be well ventilated and the workers need breathing protection equipment. So much electricity is needed in this process that many smelters are located near hydro-electric plants or have their own power stations such as Alcoa which mines brown coal to generate electricity that meets 50% of its energy requirements. Approximately 16 kWh of energy is needed to produce one kg of molten metal in the Hall-Heroult Process compared to a theoretical energy of 6.34 kWh per kg of molten metal. Two main causes of this are the reoxidation of aluminium metal by carbon dioxide and high temperature, as well as side reactions wasting energy. Computers are now being used to monitor each pot continuously and set a best voltage for any particular condition reducing energy consumption. Covering the top of the anodes with an insulator to prevent them burning off and improved quality of carbon anodes reduces energy loss. Australia's comparatively has a low consumption of power for each kilogram of aluminium produced. Research is currently being done to find an alternative extraction process and the two main ways are through carbon reduction and electrolysis of aluminium chloride. The Product Aluminium, Al a Group III element is the product that results. Its properties and uses were discussed above. Other than the pure substance, alloys are also made containing copper, magnesium, manganese, chromium, silicon, nickel, iron and zinc. Quality control issues include the issue that normal refining processes do not remove all the impurities from aluminium, so most commonly used industrial aluminium already has small amounts of impurities alloyed with it. Fortunately, this makes aluminium stronger but remains easy to bend. Some alloys are less suitable for extrusion than others, requiring higher pressures, allowing only low extrusion speeds and/or having less than acceptable surface finish and section complexity. Aluminium sheets which are rolled from ingots are not flat when produced from the rolling mills. To flatten it, they are stretched between heavy-duty hydraulically-operated grips. A Micro Alignment Telescope with sweep optical square is used to check the flatness within specified tolerance to ensure the quality. One random sample for each batch of the aluminium and its alloy ingots undergo an optical spectrometry analysis to ensure that the results lie within the limits determined by Australian specification. The by-products and waste products of this product are carbon dioxide and fluoride gases as well as sulphur and nitrogen oxides. Carbon dioxide gas is a greenhouse gas and large amounts of fluorides are toxic. Sulphur and nitrogen oxides are acid rain gases. Therefore these need to be controlled and this will be investigated below in Environmental Factors. The aluminium and its alloy ingots or its processed equivalents are packed and distributed through shipping. Approximately 78% of all aluminium produced in Victoria is exported. Location Australia has six aluminium smelters located in Tasmania (one), Victoria (two), New South Wales (two) and Queensland (one). However Bauxite mines are in Queensland, Northern Territory and Western Australia. This is because the energy costs are too high to set up a plant near the mines but in Tasmania, Victoria and New South Wales electricity is cheap. As lots of electricity is used in the electrolysis, it is cheaper to transport the bauxite to the smelters than to set up a smelter near the mines and pay higher costs for electricity. Other factors that are taken into account include the labour force available (generally higher near cities), transportation of the aluminium produced (so the smelter has to be near ports, railway stations or highways), geographic factors (smelters are built in residential areas where the land is cheap) and legal factors (whether the sounds and the activities such as the fumes released and the transportation of aluminium using trucks would affect nearby residential properties who could sue). Environmental By recycling aluminium, approximately 95% of the energy (approximately 2 billion kWh of electricity) otherwise required to produce the primary metal aluminium can be saved. This makes the aluminium cheaper to manufacture as well as reduce the rapid depletion of non-renewable fossil fuels to produce electricity. When land is mined for Bauxite, active reforestation must be carried out to ensure the stability of the environment as well as ensuring that the soil left over doesn't erode and cause mud slides. Extreme care must be taken with the handling and disposal of red mud from the refineries. This is usually pumped into dams which are sealed with impervious material to prevent pollution of surrounding countryside. The manufacture of aluminium produces carbon dioxide, a greenhouse gas, fluoride gas, a toxic gas and other exhaust gases (such as the sulphur and nitrate oxides) that can potentially be harmful. To combat their pollution, all pots are covered and the fumes are drawn into a fume duct where the gases pass through beds of alumina which adsorbs over 99%of the fluoride. All cryolite needs to be manufactured synthetically and suitable fluorides are expensive and so they need to be recovered. The gases then pass through dust filter bags and a dry scrubber and treatment facilities to remove the greenhouse and other gases and only clean air is released. Although manufacture of aluminium uses a lot of energy and other options to mine aluminium are being investigated (as shown above), the use of aluminium itself has saved a large amount of energy because they are strong and light. It is estimated that 1,230 litres of petrol was saved in cars that used 64 kg of aluminium instead of other metals and this saved more than five times the energy required to produce each kilogram of aluminium used in the car.

BIOLOGY VOCABULARY AND ASSESSMENT Essay

1. Binomial nomenclature: Linnaeus’s system of naming organisms, giving a scientific two-word name to each species- the first part being the genus, and the second the species 2. Class: taxonomic group that contains one or more related orders 3. Classification: grouping of organisms or objects based on a set of criteria that helps organize, communicate, and retain information 4. Division: taxonomic term used instead of phylum to group related classes of plants and bacteria 5. Domain: taxonomic group of one or more kingdoms 6. Family: taxonomic group of similar, related genera that is smaller than a genus and larger than an order 7. Genus: taxonomic group of closely related species with a common ancestor 8. Kingdom: taxonomic group of closely related phyla or divisions 9. Order: taxonomic group that contains related families 10. Phylum: taxonomic group of related classes 11. Taxon: named group of organisms ex: phylum, species 12. Taxonomy: branch of biology that identifies, names, and classifies species based on their natural relationships. CH 17 SEC 2 13. Character: inherited morphological or biochemical feature that 14. Cladistics: taxonomic method that models evolutionary relationships based on shared derived characters and phylogenetic trees 15. Cladogram: branched diagrams that represents the hypothesized phylogeny or evolution of a species or group; uses bioinformatics, morphological studies, and information from DNA studies 16. Molecular clock: model that uses comparisons of DNA sequences to estimate phylogeny and rate of evolutionary change 17. Phylogney: evolutionary history of a species  CH 17 SEC 3 18. Archaea: the species classified in Domain Archaea 19. Fungus: unicellular or multicellular eukaryote that is stationary, absorbs nutrients from organic materials in the environment, and has cell walls that contain chitin 20. Protist: unicellular, multicellular, or  colonial eukaryote whose cell walls may contain cellulose; can be plant-like, animal-like, or fungus-like 17.1 ASSESSMENT QUESTIONS: 1. It is easier to communicate and retain information about organisms when they are categorized into groups. 2. In the name given to an organism according to binomial nomenclature, the first part is the genus name, and the second part is the specific epithet, or specific name, that identifies the species. 3. In modern classification systems, people could classify organisms not only on morphological and behavioral characteristics, but also included evolutionary relationships. 4. The giant panda is of the Animalia Kingdom, Chordata Phylum, Mammalia Class, Carnivora Order, Ursidae Family, Ailuropoda Genus and Melanoleuca Species. 5. Since the phyla includes multiple classes, there would be more biodiversity in the phylum than in the class. 6. Taxonomy involves classifying species, but systematics involves discovering new species and relationships. They incorporate information from taxonomy in their studies.