Philosophy, Mission, and Organizing Framework of caring nursing theory Assignment

Philosophy, Mission, and Organizing Framework of caring nursing theory - Assignment Example The college lives on the philosophy that the nursing discipline and profession is based on caring. The philosophy states that the contributions of nursing to the society focuses on the person as a whole through caring. The discipline requires a response by the practitioners towards the enhancement of a person’s well-being. There are situations that call for nursing to occur and include enhancement of well-being through the contact of nurses and persons involved. He discipline has an art and science presence with the former etched on creativity in practice, and the latter on the complex body of knowledge. My philosophy in nursing is that, as a nurse, I have the responsibility of providing safe, holistic and patient-centered care to the public or the nursed individuals (American Nurses Association, 2010). In this case, patients deserve and require individualized attention and assistance whenever they need. On the other hand, nurses remain the providers of health assistance and care. The organizational framework of the college is based on criteria of nurturing a person through caring. Therefore, the main basis for examination is caring. Nursing is unique and requires a response from the nurse to a call from another person, where the nurse is supposed to respond by getting into the person’s situation and assisting professionally. According to Ray (2007), there is a challenge in nursing caring as described in her theory of bureaucratic caring. The theory suggests that nurses struggle with the requirement of serving the bureaucratic needs of the system while required to serve the caring needs of the human beings. This philosophy seems to be in opposition to the CON philosophy that aims at human needs for caring as the primary necessity. The bureaucracy has been brought about in the society by politics, social statuses, economy and technological advancements. The author notes that various hospital units

Hunger in Black Boy Essay Example for Free

Hunger in Black Boy Essay Hunger in Black Boy Have you ever experienced real hunger? The kinds of hungers that Richard experiences in Black Boy are not evident in the society where you and I reside. The present middle class citizens cannot really relate to true physical hunger. Hunger for most of us is when there is nothing that we desire to eat around the house and therefore skip one meal. This cannot even compare to the days that Richard endures without food. Physical hunger, however, is not the only hunger apparent in Richards life. Richard suffers from emotional and educational hungers as well. He yearnsfor such things as mere association with others and simple books to read. Both of which are things that most people take for granted. This efficacious autobiography, Black Boy, by Richard Wright manifests what it is like to desire such simple paraphernalia. From a very early age and for much of his life thereafter, Richard experiences chronic physical hunger. Hunger stole upon me slowly that at first I was not aware of what hunger really meant. Hunger had always been more or less at my elbow when I played, but now I began to wake up at night to find hunger standing at my bedside, staring at me gauntly (16). Soonafter the disappearance of Richards father, he begins to notice constant starvation. This often reappears in his ensuing life. The type of hunger that Richard describes is worse than one who has not experienced chronic hunger can even imagine. Once again I knew hunger, biting hunger, hunger that made my body aimlessly restless, hunger that kept me on edge, that made my temper flare, that made my temper flare, hunger that made hate leap out of my heart like the dart of a serpents tongue, hunger that created in me odd cravings (119). Because hunger has always been a part of Richards lifestyle, he cannot even imagine eating meat every day. This simple privilege would be a miracle to him, yet to most it is nothing. These weakening and piercing hungers are frequently evident where poverty dwells in the Jim Crow South. Furthermore, emotional hunger also represses much of Richards life. Richard desires attention from people. However, since he does not receive much of this at home, he does not really know how to associate with others. This provokes a problem when he leaves home because he cannot understand the friendliness of people around him. Nevertheless, I was so starved for association with people that I allowed myself to be.

Butch and femme roles of lesbians

Butch and femme roles of lesbians Butch and femme roles were extremely important to the community in the forties and fifties; it was the butch role that was the most visible, and therefore the most likely to cause public scorn (Weissman and Fernie). The two sources, The Reproduction of Butch Femme Roles by Madeline Davis and Elizabeth Lapovsky Kennedy and Forbidden Love by Aerlyn Weisman and Lynne Fernie focus particularly on the function of the butch role among working class lesbians in Buffalo. These sources draw on articles, oral histories and interviews of lesbians from the early twentieth century. Both the resources state that, although gender-appropriate styles and behaviors were rigidly enforced in order to maintain a clear distinction between the sexes, butch womens choice to not only reject traditional femininity but to also actively adopt masculinity was perceived as a threat to the very order of society and a prelude to social chaos. Despite the fear, and likelihood of harassment by police and other strai ght men, the courage of butches to claim their identities in many ways prepared the way for later generations of lesbians to break free from the narrow conventions of socially constructed womanhood and claim access to a kind of power traditionally held only by men (Weisman and Fernie). As a result, male representations of lesbian sexuality have had the most influence in shaping attitudes towards butch and femme identities throughout the twentieth century. Such representations have almost always assumed the lesbian role -playing is an imitation of heterosexuality. The main theory underlying the feminist disregard of role playing is that roles depend on sexual difference, which is naturally hierarchical, polarizing, and oppressive. Sexual difference is the grounds on which heterosexual roles are built, and thus contains within it an inherently unequal distribution of power. In the relationship of a butch and femme, since the identities of both are built on popular cultural stereotypes of male and female behavior, they tend to reinforce the inequality in power inherent in this dichotomy. In addition, in most cases one of the partners is active, strong, dominant, and initiating whereas the other partner is passive, weak, submissive, and enduring. The partner who is dominant in this equation mimics the role of a male in a heterosexual relationship, whereas the passive, weak and submissive characteristics belong to that of the female. Thus, because the butch- femme roles have the potential for being just as sexist as heterosexual roles, they imita te the latter, especially when talking about power relations between two partners. (Weisman and Fernie) According to Judith Roofs article, The Match in the Crocus: Representations of Lesbian Sexuality, the representations of lesbian sexuality in the dominant discourse often evoke the phallus by calling attention to its absence or substitution in sexual relations between women, so that it appears and seems necessary, at least symbolically, because of the inconceivability of sexuality without a phallus present. Therefore, lesbians are often depicted as having appropriated the penis, masquerading as though they really had it, and thereby assuming male privilege and acting upon it. This evokes the stereotypical image of the lesbians by phallocentric discourse and is seemingly embraced by the lesbian community in the form of butch roles. What Roofs analysis makes possible is an understanding of the ways in which the dominant ideology has a vested interest in making the butch femme role playing appear to be a mere replica of heterosexuality, as a way of calming male anxiety over the threat of female appropriation of male dominance. Thus, because the absence of the phallus requires them to achieve the balance through role playing, they merely are merely imitating the heterosexual norms. Butch femme roles were particularly prominent in the working-class lesbian bar culture of the 1940s, 50s, and 60s, where butch-femme relationships were the norm, while butch-butch and femme-femme were taboo (Kennedy and Davis 244/81). Most of the lesbian community existed primarily in bars, since these were the only places where people could gather publicly, break the isolation of lesbian life, and develop both friendships and lover relationships (Kennedy and Davis 243/80). Just as in straight bars, picking up another type in lesbian bars was often the reason for attending the party. Although there are a few exceptions (like Nairobi in Forbidden Love who sent a rose to her desired person), the butch was typically the one who made the first move towards the femme who just sat and looked pretty. This idea of the male butch having to make the first move, replicates the role of a heterosexual male who usually is the one to make the first move at a club. The objective of a butch was to satisfy and keep his femme safe (Weisman and Fernie). This reiterates the notion of one of the partners being in control, strong, and dominant, whereas the other is weak, and needs the help of a man to keep her safe (Weisman and Fernie). This goes hand in hand with the notion of the society that perceives women to be inferior to men because they need a man to look after them. It was always the butch who put up with the discrimination, and bashing to keep their woman safe. Further, the butch is never attracted to another like herself. Rather, she is always attracted to a more feminine type of person (Kennedy and Davis 251/84). This can be paralleled to the idea that heterosexual males are not supposed to be attracted to the same type of person, but of the opposite sex. Therefore, though they are trying to show a discourse to heterosexual relationships, the fact that society is predominantly heterosexual subjected them to the widely known heterosexual st ructure. The role playing in the bedroom does not strictly and always follow pleasure being received only by one partner. Just like the sex life of heterosexual couples butch and femme complement each other in an erotic system in which the butch was expected to be both the giver and the doer (Kennedy and Davis 244/81), however not always. In simpler terms, as shown in Forbidden Love it was always the butch on top, and the femme on the bottom. Though this earned them a destruction of taboo around the sexuality of lesbians, it can be taken further by the notion that in the sex life of heterosexual couples, the female is the one on the bottom, and the male is the one who is taking charge, and dominant, and therefore on top. In contrast to a butch, a stone butch is a woman who is strongly masculine in character and dress, tops her partners sexually (and sometimes emotionally), and who does not wish to be touched genitally. Not all stone butches identify in female terms; some are known to identify with male pronouns, while many stone butches do not even identify themselves with lesbian or within the lesbian community. A common partner for a stone butch is a stone femme; a femme who bottoms sexually or who wishes not to touch the genitals of her stone butch partner. Moreover, the characteristics of stone butches can be found in many men, who wish to pleasure, but do not expect anything in return; that is to be total givers. These men get their zing from pleasuring their woman, identical to the role of a stone butch. (Weisman and Fernie) By wearing the attire of a man, the butches earn privileges that a heterosexual man would have. The femme, or the woman, who wears feminine clothes, does not have the same privileges of that of the males. Wearing manly clothes gives a lot more mobility and freedom to the butches, which parallels the liberation that heterosexual males get and their females do not. Moreover, the only way for women to achieve independence in work and travel and to escape passivity was to pass as men (Kennedy and Davis 245/81). Wearing manly clothes therefore also permitted these men to earn higher salaries and get better jobs (Weissman and Fernie); similar to how getting a job was known to be a mans responsibility in the heterosexual structure. Though there have been ongoing debates on the roles of butch and femmes, there is no doubt that their role playing imitates the functions which are evident in a heterosexual constitution. There are many reasons that have compelled these lesbians into taking up these heterosexual identities; one being the identification and visibility of the role of females in a society dominated by heterosexual notions of relationships, and another being that taking up the male characteristics, was the only way to let the society view their homosexual relationships as somewhat heterosexual. Thus, butches and femmes took on the notion of the heterosexuals by imitating their masculine style of clothing, sex habits, stratified positions and social behaviours.

Romanticism :: essays research papers

Romanticism Roughly from 1815 to 1910, this period of time is called the romantic period. At this period, all arts are transforming from classic arts by having greater emphasis on the qualities of remoteness and strangeness in essence. The influence of romanticism in music particularly, has shown that romantic composers value the freedom of expression, movement, passion, and endless pursuit of the unattainable fantasy and imagination. The composers of the romantic period are in search of new subject matters, more emotional and are more expressive of their feelings as they are not bounded by structural rules in classical music where order, equilibrium, control and perfection are deemed important (Dorak, 2000). The characteristics of romantic music are influenced by the Romantic Movement, where the arts of literature and painting play a great role in influencing romantic music. Other evidence of non-musical influences in romantic music is the popularity of romantic poetry during that era. Poems, opera arias and works form great romantic poets are transformed into instrumental works and composers like Schubert uses musical elements such as melodies inspired by poetry in his works (http://absoluteastronomy.com). The musical language itself has shown that romantic music is different from the rest of the music before its time. Extended tonal and harmonic elements are noticed in romantic music compared to those in the classical era, where chromaticism, the usage of dissonance, and modulations are used extensively. Other societal practice during romanticism is the Romantic Opera. In comparison to the classical and baroque opera, romantic opera has a continuous flow of music in each scene and soon, people pay less attention to tenors and pays equal attention to choruses. To name a few of many composers for romantic operas, Wagner and Bizet are known for their works for romantic opera during the romantic era. Romantic music is also influenced by folk music, tunes, rhythms and themes as many romantic composers wrote nationalist music, which is inspired from folk dances and songs, during the romantic period (http://absoluteastronomy.com). Another factor that contributed to romantic music in defining its traits is the instrumentation.

Japan’s Economic Malaise Essay

An affluent economy has the dynamics to identify their financial strength and prosperity by the principles they practice and execute. However, when a country becomes overly confident on their abilities to remain consistent as a global power they become vulnerable to complacency. A nation’s economic wealth becomes susceptible when they no longer recognize the potential risks that may lead their country to either a recession or total collapse of their economy. Japan’s economic malaise clearly articulates how the country’s failure to recognize the strategies they set for their nation would lead to one of the biggest economic catastrophes in the world. Japanese Economy Stagnated Beginning in the early 1980’s up to 1989, Japan’s economy had grew at a record pace. The Nikkei stock market was up over 600 percent and property prices reached levels never seen before. Society was recognizing a wealthy standard of living that boasted the world’s second largest economy. By early 1989, Japan would experience an improbable market crash that would eventually devastate their hope for continued success. In addition, property prices began to drop significantly in response to the stock market’s immediate downfall. The simultaneous reaction of Japan’s stock market and property prices led to deflationary issues throughout the country. Deflation occurs when there is a continuous fall in prices. The fall in prices become the beginning of a greater issue. Consumers and businesses begin losing confidence in the economy by trying to minimize the amount of cash they spend and begin saving more to survive. Optimism levels drop dramatically causing a pattern of ambiguity on whether their country has the ability to recover. While Japan was beginning to endure their setbacks, banks began to eliminate lending as property prices began a downward spiral. Debt rose to extreme levels and many businesses started to notice their financials were diminishing causing them to tighten their expenses, decrease their staffs, wages, and salaries. The resulting factors led Japan into one of the deepest recessions of their history. For the last 20 years, Japan’s stagnate economy continues to sequence through a deflationary cycle. Lessons and the Deflationary Spiral Although there have been modest improvements, Japan recognizes the challenges that lie ahead in order to restore the economy they once had. Some of the lessons that other nations can learn from Japan’s last 20 years are to incorporate a strategy and vision for their country. In addition, they must be cognizant of how deflation can vividly affect a country’s wealth and how a deflationary cycle can disturb its chances to prosper. While it is important to understand some of the lessons that other nations can learn from Japan, it is vitally essential for countries to know how to avoid a deflationary spiral. One of the ways a country can avoid a deflationary spiral is to embrace a continuous strive for economic development through education and job growth. As of June 2012, Japan’s unemployment rate stood at 4.6% compared to 2.0% in 1989. Job creation and education promote opportunities that have the potential to turnaround a deflationary spiral. Japan’s Economy to Prosperity Lastly, by recognizing how Japan continues to have difficulties with deflation their struggles offer some opportunities that they can utilize to enhance their economy’s wealth. According to Hill (2013), Japan could reverse this trend by increasing immigration or boosting the birthrate, but neither of these seem likely at the moment (Hill, 2013, p.96). Although Hill has reservations on whether immigration or boosting the birthdate may not be likely due to a cynical population, Japan must evaluate all of their options in order to persevere. In addition to the potential of increasing immigration and boosting the birthrate, Japan should also consider raising their sales tax. If Japan raises their sales tax of 5% in increments of 1.0% each year over the next five years, they will be able to offset some of their discretionary costs such as welfare and other governmental benefits to help ease some of the deflation they are enduring. While there may be many options to get Japan’s economy moving again one of the most advantageous methods is to evaluate how they fell into a deflationary spiral. Japan must acknowledge and learn from their inaccuracies by developing productive procedures that incorporate inflexible checks and balances in order to recognize their faults and establish an economical plan that will restore hope and optimism with in the Japanese population. Conclusion Japan’s economy has gone through significant challenges over the last two decades. By recognizing how Japan continues to have a stagnated economy, the lessons learned to prevent other countries to fall victim, how to avoid the deflationary spiral, and how to reinvigorate Japan’s economy, leaders can gather great insight on how to manage their own economies. In the international world of business transactions and economic trends, countries must exercise good intentions for their nation and maximize sound judgment in a way that promotes confidence and assurance that they are making the right decisions. Japan’s economic malaise over the last 20 years proves the importance and severity of what can happen if a country lacks the vision and strategy to succeed. References Fingleton, E. (2012, January 6). The Myth of Japan’s Failure. NY Times. Retrieved from http://www.nytimes.com Hill, C. (2013). International Business, Competing in the Global Marketplace (9th ed.). McGraw-Hill Irwin. Shilling, G. (2012, June 4). Japan’s Debt Sustains a Deflationary Depression. Bloomberg News. Retrieved from http://www.bloomberg.com

Risc & Pipelining

What is RISC Architecture? * RISC stands for Reduced Instruction Set Computer. * An Instruction set is a set of instructions that helps the user to construct machine language programs to do computable tasks. History * In early days, the mainframes consumed a lot of resources for operations * Due to this, in 1980 David Paterson, University of Berkeley introduced the RISC concept. * This included fewer instructions with simple constructs which had faster execution, and less memory usage by the CPU. * Approximately a year was taken to design and fabricate RISC I in silicon * In 1983, Berkeley RISC II was produced.It is with RISC II that RISC idea was opened to the industry. * In later years it was incorporated into Intel Processors * After some years, a revolution took place between the two Instruction Sets. * Whereby RISC started incorporating more complex instructions and CISC started to reduce the complexity of their instructions. * By mid 1990’s some RISC processors became mo re complex than CISC! * In today’s date the difference between the RISC and CISC is blurred. Characteristics and Comparisons * As mentioned, the difference between RISC and CISC is getting eradicated. But these were the initial differences between the two.RISC| CISC| Fewer instructions| More (100-250)| More registers hence more on chip memory (faster)| Less registers| Operations done within the registers of the CPU| Can be done external to CPU eg memory| Fixed length instruction format hence easily decoded| Variable length| Instruction execution in one clock cycle hence simpler instructions| In multiple clock cycles| Hard wired hence faster| Micro programmed| Fewer addressing modes| A variety| Addressing modes : Register direct. Immediate addressing, Absolute addressing Give examples on one set of instructions for a particular operation, Instruction Formats ttp://www-cs-faculty. stanford. edu/~eroberts/courses/soco/projects/2000-01/risc/risccisc/ Advantages and Disadvantages * Speed of instruction execution is improved * Quicker time to market the processors since few instructions take less time to design and fabricate * Smaller chip size because fewer transistors are needed * Consumes lower power and hence dissipates less heat * Less expensive because of fewer transistors * Because of the fixed length of the instructions, it does not use the memory efficiently * For complex operations, the number of instructions will be largerPipelining The origin of pipelining is thought to be in the early 1940s. The processor has specialised units for executing each stage in the instruction cycle. The instructions are performed concurrently. It is like an assembly line. IF| ID| OF| OE| OS| | | | | | | IF| ID| OF| OE| OS| | | | | | | IF| ID| OF| OE| OS| | | | | | | IF| ID| OF| OE| OS| | | Time Steps (clocks) Pipelining is used to accelerate the speed of the processor by overlapping various stages in the instruction cycle. It improves the instruction execution bandwidt h. Each instruction takes 5 clock cycles to complete.When pipelining is used, the first instruction takes 5 clock cycles, but the next instructions finish 1 clock cycle after the previous one. Types of Pipelining There are various types of pipelining. These include Arithmetic pipeline, Instruction pipeline, superpipelining, superscaling and vector processing Arithmetic pipeline: Used to deal with scientific problems like floating point operations and fixed point multiplications. There are different segments or sub operations for these operations. These can be performed concurrently leading to faster execution.Instruction pipeline: This is the general pipelining, which have been explained before. — Pipeline Hazards Data Dependency: When two or more instructions attempt to share the same data resource. When an instruction is trying to access or edit data which is being modified by another instruction. There are three types of data dependency: RAW: Read After Write – This happens when instruction ij reads before instruction ii writes the data. This means that the value read is too old. WAR: Write After Read – This happens when instruction ij writes before instruction ii reads the data.This means that the value read is too new. WAW: Write After Write – This happens when instruction ij writes before instruction ii writes the data. This means that a wrong value is stored. Solutions Data Dependency: * Stall the pipeline – This means that a data dependency is predicted and the consequent instructions are not allowed to enter the pipeline. There is a need for special hardware to predict the data dependency. Also a time delay is caused * Flush the pipeline – This means that when a data dependency occurs, all other instructions are removed from the pipeline. This also causes a time delay. Delayed load – Insertion of No Operation Instructions in between data dependent instructions. This is done by the compiler and it avoids data dependency Clock Cycle| 1| 2| 3| 4| 5| 6| 1. Load R1| IF| OE| OS| | | | 2. Load R2| | IF| OE| OS| | | 3. Add R1 + R2| | | IF| OE| OS| | 4. Store R3| | | | IF| OE| OS| Clock Cycle| 1| 2| 3| 4| 5| 6| 7| 1. Load R1| IF| OE| OS| | | | | 2. Load R2| | IF| OE| OS| | | | 3. NOP| | | IF| OE| OS| | | 4. Add R1 + R2| | | | IF| OE| OS| | 5. Store R3| | | | | IF| OE| OS| Branch Dependency: this happens when one instruction in the pipeline branches into another instruction.Since the instructions have already entered the pipeline, when a branch occurs this means that a branch penalty occurs. Solutions Branch Dependency 1. Branch prediction: A branch to an instruction to an instruction and its outcome is predicted and instructions are pipelined accordingly 2. Branch target buffer: 3. Delayed Branch: The compiler predicts branch dependencies and rearranges the code in such a way that this branch dependency is avoided. No operation instructions can also be used. No operation instructions 1. LO AD MEM[100] R1 2. INCREMENT R2 3. ADD R3 R3 + R4 4. SUB R6 R6-R5 . BRA X Clock Cycle| 1| 2| 3| 4| 5| 6| 7| 8| 9| 1. Load| IF| OE| OS| | | | | | | 2. Increment| | IF| OE| OS| | | | | | 3. Add| | | IF| OE| OS| | | | | 4. Subtract| | | | IF| OE| OS| | | | 5. Branch to X| | | | | IF| OE| OS| | | 6. Next instructions| | | | | | | IF| OE| OS| Clock Cycle| 1| 2| 3| 4| 5| 6| 7| 8| 9| 1. Load| IF| OE| OS| | | | | | | 2. Increment| | IF| OE| OS| | | | | | 3. Add| | | IF| OE| OS| | | | | 4. Subtract| | | | IF| OE| OS| | | | 5. Branch to X| | | | | IF| OE| OS| | | 6. NOP| | | | | | IF| OE| OS| | 7. Instructions in X| | | | | | | IF| OE| OS| Adding NOP InstructionsClock Cycle| 1| 2| 3| 4| 5| 6| 7| 8| 1. Load| IF| OE| OS| | | | | | 2. Increment| | IF| OE| OS| | | | | 3. Branch to X| | | IF| OE| OS| | | | 4. Add| | | | IF| OE| OS| | | 5. Subtract| | | | | IF| OE| OS| | 6. Instructions in X| | | | | | IF| OE| OS| Re arranging the instructions Intel Pentium 4 processors have 20 stage pipelines. Toda y, most of these circuits can be found embedded inside most micro-processors. Superscaling: It is a form of parallelism combined with pipelining. It has a redundant execution unit which provides for the parallelism. Superscalar: 1984 Star Technologies – Roger ChenIF| ID| OF| OE| OS| | | | | | IF| ID| OF| OE| OS| | | | | | | IF| ID| OF| OE| OS| | | | | | IF| ID| OF| OE| OS| | | | | | | IF| ID| OF| OE| OS| | | | | | IF| ID| OF| OE| OS| | | | | | | IF| ID| OF| OE| OS| | | | | | IF| ID| OF| OE| OS| | | Superpipelining: It is the implementation of longer pipelines that is pipelines with more stages. It is mainly useful when some stages in the pipeline take longer than the others. The longest stage determines the clock cycle. So if these long stages can be broken down into smaller stages, then the clock cycle time can be reduced.This reduces time wasted, which will be significant if a number of instructions are performed. Superpipelining is simple because it does not need any addit ional hardware like for superscaling. There will be more side effects for superpipelining since the number of stages in the pipeline is increased. There will be a longer delay caused when there is a data or branch dependency. Vector Processing: Vector Processors: 1970s Vector Processors pipeline the data also not just the instructions. For example, if many numbers need to be added together like adding 10 pairs of numbers, in a normal processor, each pair will be added at a time.This means the same sequence of instruction fetching and decoding will have to be carried out 10 times. But in vector processing, since the data is also pipelined, the instruction fetch and decode will only occur once and the 10 pairs of numbers (operands) will be fetched altogether. Thus the time to process the instructions are reduced significantly. C(1:10) = A(1:10) + B(1:10) They are mainly used in specialised applications like long range weather forecasting, artificial intelligence systems, image process ing etc.Analysing the performance limitations of the rather conventional CISC style architectures of the period, it was discovered very quickly that operations on vectors and matrices were one of the most demanding CPU bound numerical computational problems faced. RISC Pipelining: RISC has simple instructions. This simplicity is utilised to reduce the number of stages in the instruction pipeline. For example the Instruction Decode is not necessary because the encoding in RISC architecture is simple. Operands are all stored in the registers hence there is no need to fetch them from the memory.This reduces the number of stages further. Therefore, for pipelining with RISC architecture, the stages in the pipeline are instruction fetch, operand execute and operand store. Because the instructions are of fixed length, each stage in the RISC pipeline can be executed in one clock cycle. Questions 1. Is vector processing a type of pipelining 2. RISC and pipelining The simplest way to examine the advantages and disadvantages of RISC architecture is by contrasting it with it's predecessor: CISC (Complex Instruction Set Computers) architecture. Multiplying Two Numbers in MemoryOn the right is a diagram representing the storage scheme for a generic computer. The main memory is divided into locations numbered from (row) 1: (column) 1 to (row) 6: (column) 4. The execution unit is responsible for carrying out all computations. However, the execution unit can only operate on data that has been loaded into one of the six registers (A, B, C, D, E, or F). Let's say we want to find the product of two numbers – one stored in location 2:3 and another stored in location 5:2 – and then store the product back in the location 2:3. The CISC ApproachThe primary goal of CISC architecture is to complete a task in as few lines of assembly as possible. This is achieved by building processor hardware that is capable of understanding and executing a series of operations. For this p articular task, a CISC processor would come prepared with a specific instruction (we'll call it â€Å"MULT†). When executed, this instruction loads the two values into separate registers, multiplies the operands in the execution unit, and then stores the product in the appropriate register. Thus, the entire task of multiplying two numbers can be completed with one instruction: MULT 2:3, 5:2MULT is what is known as a â€Å"complex instruction. † It operates directly on the computer's memory banks and does not require the programmer to explicitly call any loading or storing functions. It closely resembles a command in a higher level language. For instance, if we let â€Å"a† represent the value of 2:3 and â€Å"b† represent the value of 5:2, then this command is identical to the C statement â€Å"a = a * b. † One of the primary advantages of this system is that the compiler has to do very little work to translate a high-level language statement into assembly.Because the length of the code is relatively short, very little RAM is required to store instructions. The emphasis is put on building complex instructions directly into the hardware. The RISC Approach RISC processors only use simple instructions that can be executed within one clock cycle. Thus, the â€Å"MULT† command described above could be divided into three separate commands: â€Å"LOAD,† which moves data from the memory bank to a register, â€Å"PROD,† which finds the product of two operands located within the registers, and â€Å"STORE,† which moves data from a register to the memory banks.In order to perform the exact series of steps described in the CISC approach, a programmer would need to code four lines of assembly: LOAD A, 2:3 LOAD B, 5:2 PROD A, B STORE 2:3, A At first, this may seem like a much less efficient way of completing the operation. Because there are more lines of code, more RAM is needed to store the assembly level instr uctions. The compiler must also perform more work to convert a high-level language statement into code of this form. CISC | RISC | Emphasis on hardware | Emphasis on software | Includes multi-clock complex instructions | Single-clock, educed instruction only | Memory-to-memory: â€Å"LOAD† and â€Å"STORE† incorporated in instructions | Register to register: â€Å"LOAD† and â€Å"STORE† are independent instructions | Small code sizes, high cycles per second | Low cycles per second, large code sizes | Transistors used for storing complex instructions | Spends more transistors on memory registers | However, the RISC strategy also brings some very important advantages. Because each instruction requires only one clock cycle to execute, the entire program will execute in approximately the same amount of time as the multi-cycle â€Å"MULT† command.These RISC â€Å"reduced instructions† require less transistors of hardware space than the complex in structions, leaving more room for general purpose registers. Because all of the instructions execute in a uniform amount of time (i. e. one clock), pipelining is possible. Separating the â€Å"LOAD† and â€Å"STORE† instructions actually reduces the amount of work that the computer must perform. After a CISC-style â€Å"MULT† command is executed, the processor automatically erases the registers. If one of the operands needs to be used for another computation, the processor must re-load the data from the memory bank into a register.In RISC, the operand will remain in the register until another value is loaded in its place. The Performance Equation The following equation is commonly used for expressing a computer's performance ability: The CISC approach attempts to minimize the number of instructions per program, sacrificing the number of cycles per instruction. RISC does the opposite, reducing the cycles per instruction at the cost of the number of instructions p er program. RISC Roadblocks Despite the advantages of RISC based processing, RISC chips took over a decade to gain a foothold in the commercial world. This was largely due to a lack of software support.Although Apple's Power Macintosh line featured RISC-based chips and Windows NT was RISC compatible, Windows 3. 1 and Windows 95 were designed with CISC processors in mind. Many companies were unwilling to take a chance with the emerging RISC technology. Without commercial interest, processor developers were unable to manufacture RISC chips in large enough volumes to make their price competitive. Another major setback was the presence of Intel. Although their CISC chips were becoming increasingly unwieldy and difficult to develop, Intel had the resources to plow through development and produce powerful processors.Although RISC chips might surpass Intel's efforts in specific areas, the differences were not great enough to persuade buyers to change technologies. The Overall RISC Advantag e Today, the Intel x86 is arguable the only chip which retains CISC architecture. This is primarily due to advancements in other areas of computer technology. The price of RAM has decreased dramatically. In 1977, 1MB of DRAM cost about $5,000. By 1994, the same amount of memory cost only $6 (when adjusted for inflation). Compiler technology has also become more sophisticated, so that the RISC use of RAM and emphasis on software has become ideal.

England and Stalin essays

England and Stalin essays Elizabethan England and Russia during Stalin There are and have been many cultures upon this earth. There are cultures that might seem weird to us and cultures that look at us in wonderment. They have different lifestyles and whole different outlooks on life. Studying cultures is a work in itself. By studying and comparing other cultures, we can find out more about our culture and ourselves. Cultures contain different folkways. In the Random House Dictionary, folkways is defined as the ways of living and acting in a human group, built up without conscious design but serving as compelling guides of conduct(551). For example in our society we could define marriage folkways for LDS, and explain why it happens so early and also how the law of chastity plays a big part upon that. Elizabethan England is a culture full of folkways that might seem different to us, but explain to us a lot about our culture also. While Stalin was in control of Russia, the cultures there are hard for us to understand. It was much different fro m our culture now, and we can also learn a lot from them. Elizabethans refers to all those that lived in England during the time of Queen Elizabeths reign. Stalinism defined Stalins totalitarian control. Elizabeth I lived from 1533-1603 .She was the daughter of King Henry VIII, and because of no males in the order she became queen in 1558. She reigned for 45 years (Adler 320). This was a time where they were making the change to become more modern, but still had the effects of the old society upon them. Stalin lived from 1879 -1953 (Adler p. 636). He lived in Russia during a time of great depression. The old government was struggling and looking for a new hope to guide them to have a better economy. This struggle to change is shown in a look at their folkways. I think if one compares Elizabethan England and Stalins Russias social ways, marriage ways, and religiou...