Hybrid Spread Spectrum Techniques for Cell Phone Essay -- Technology

In addition to the frequency hopped and direct sequence, spread spectrum multiple access technique, there are certain other hybrid combinations that provide the advantage in the area of cellular mobile communication system. The available wideband spectrum is divided in to a number of subspectras with smaller bandwidth. Frequency Hopped Multiple Access Technique (FHMAT) consists of a direct sequence modulated signal whose center frequency is made to hop periodically in a pseudorandom fashion. In this paper we provide a Hybrid Spread Spectrum Techniques using Time Division Code Division Multiple Access (TDCDMA) system in which different spreading codes are assigned to different cell within each cell, only one user per cell is allotted a particular time slot. Time Division Frequency Hopping Multiple Access (TDFHMA) Technique has an advantage in severe multipath or when severe co-channel interference occurs. The subscriber can hop to new frequency at the subscriber can hope to new freque ncy at the start of a new time division multiple access frame. These different areas covered by the antenna beam may be served by the same frequency or difference frequency. Keywords: Frequency Hopped Multiple Access, Time Division Code Division Multiple Access, Time Division Frequency Hopping, Space Division Multiple Access 1 Introduction Spread spectrum techniques spread information over a very large bandwidth specifically, a bandwidth that is much larger than the inverse of the data rate. In this paper we are discussing various ways of providing multiple access by spreading the spectrum. We start out with the conceptually simplest approach, Frequency Hopping (FH). We then proceed to the most popular form of spread spectrum, Direct Sequence-Code D... ... Hybrid Wireless Networks Using Autonomic Computing Principles† IEEE, CNSR, 2005 [4] C. Lo, E. Masry, and L. B. Milstein, â€Å"Design and Analysis of a Fast Frequency-Hopped DBPSK Communication System, Part I,† IEEE Trans. Commun., Vol. COM-41, pp. 1552-1564, 1993 [5] Masato Mizoguchi and Kazuhiko Seki ,† In-Chip Fast Frequency Hopped and Direct Sequence CDMA Systems for Indoor Wireless Communications†,IEEE Trans. Commun, pp.1508-1512, 1996 [6] Andreas F. Molsch, â€Å"Spread Spectrum Systems†, publisher by Wiley India Edition, pp. 469-471,2005. [7] Theodore S. Rappaport, â€Å"Multiple Access Technique for Wireless communications†, Second Edition pp. 451- 463, 1996. [8] Q. Chen, Q. Wang and V. K. Bhargava, â€Å"Error Performance of Coded SFHiDPSK in Tone Interference and AWGN,† IEEE Confrence Milcom, pp. 63-67, 1992.

Venture Capital Financing Essay -- essays research papers fc

What is Venture Capital   Ã‚  Ã‚  Ã‚  Ã‚  Venture capital is money provided by professionals who invest alongside management in young, rapidly growing companies that have the potential to develop into significant economic contributors (NVCA). Venture capital is an important source of equity for start-up companies. These portfolio companies that receive venture capital are thought to have excellent growth prospects. Start-up companies don’t usually have the access to capital markets because they are private. Venture capitalists are one solution to financing high risk, but potentially high reward companies. Usually the investors receive a say in the company’s management, they may be on the board, and they expect to receive returns 5-10 times their investment of up to 50 million dollars (Burk). History of Venture Capital It is important to start out with the history of venture capital to see how it has grown as well as to show its ups and downs. It was thought to be developed in the years following WWII but it can actually be dated all the way back to partnerships in the Babylonian Code (Gompers). These Babylonian partnerships used gold or silver to finance caravans. The terms for were 12 years and 100% profits (Heise). Much later the first venture capital firm was established in 1946. Karl Compton, the MIT President, along with Georges Doriot, a Harvard Business School Professor, formed American Research and Development (ARD). There were also local businesses leaders involved in the project. During the war, there were many new technologies developed as well as other innovations from MIT. About half of ARD’s profits came from its investment in Digital Equipment Company in 1957. It had only invested $70,000 but had grown in value to $355 million. A decade later, many other venture capital firms were formed. They were all structured as publicly traded closed-end funds as were ARD’s. Closed-end are mutual funds whose shares must be sold to other investors, instead of being redeemed from the issuing firm. In 1958, the first venture capital limited partnership was formed, Draper, Gaither, and Anderson. Others soon followed suit, but limited partnership remained the minority during 1960’s and 1970’s. The rest were either closed-end funds, or small business investment companies. During these years, the total annual venture funds were small and never exc... ...try. They are very optimistic about the future of venture capital funding. They say this is due to the fact that more investors are investing in venture capital, as well as the increase of IPO’s (Raffa). Works Cited Bartlett, Joseph. Fundamentals of Venture Capital. Rowman Publishers, 1999. Burk, James, and Richard Lehman. Financing Your Small Business. Sphinx Publishing,   Ã‚  Ã‚  Ã‚  Ã‚  2004. Camp, Justin. Venture Capital Due Diligence. Wiley Inc, 2002. Gompers, Paul, and Joshua Lerner. Venture Capital Cycle. Cambridge: The MIT Press,   Ã‚  Ã‚  Ã‚  Ã‚  2000. Heise, John. â€Å"The History of the Bronze Age in Mesopotamia.† 1996. http://mahan.wonkwang.ac.kr/lecture/ancient/meso/sron/bronze_age.html National Venture Capital Association. 2005. http://nvca.org/ Raffa, David. â€Å"Pipe Dreams and Other Opportunities on the Venture Capital Road   Ã‚  Ã‚  Ã‚  Ã‚  Ahead.† 2004. www.catalyst-law.com/document/237 Sherman, Andrew. Raising Capital. 2nd ed. Amacon, 2005 Timmons, Jeffrey, et al. How to Raise Capital. McGraw-Hill Companies, 2004. Venture Capital Journal. Thomson Financial, 2005. http://www.venturecapitaljournal.net/vcj/topnews.html

Bullying in Nursing

Bullying In Nursing Cassandra Owens Recently, during one of our weekend shifts, the unit was almost to capacity with each nurse having the max number of patients we were allowed to have. Our sister unit is the unit that gets our over flow once we are no longer able to accept any more patients. The charge nurse was a young Army Lieutenant and new to being a charge nurse. When the nursing supervisor called to notify us of another admission, the charge nurse informed her that although we were able to accept two more patients, our sister unit only had five patients.She then asked if the other patients could be directed to the other unit. The supervisor proceeded to yell at her so loud over the phone that we could hear it, stating she would take any admission she directed towards her. Just because she was a new Lieutenant it would behoove her to mind her own floor. Our head nurse was notified and she spoke with the supervisor, but the damage had been done. The nurse is now very hesitant w hen she has to be charge and tries to change shifts so she will not have to do it.Bullying has been receiving a mass amount of attention due to recent horrible acts that have been committed against individuals who are considered helpless and/or weak. From psychological damage to physical harm or even death, bullying is a phenomenon that can be damaging to an individual, group or community. This fact holds true on the professional side as well. Bullying in the nursing profession has been increasingly reported over the past decade. Although bullying behaviors are unfortunately common acts committed by physicians, patients, and patient’s families, nurses also engage in bullying of their colleagues.With this recent increase, it is important to understand the ethical and legal issues associated with this behavior. Considering that the nursing profession has topped the list of the most honest and ethical professions for eleven years in a row, it is concerning that nurses would enga ge in behaviors that have been described as humiliating, intimidating, threatening, or demeaning aimed at their own colleagues (Matt, 2012). There are detailed codes of ethics in place that are supposed to provide guidelines for moral character. Yet, espite these guidelines, nurses engage in the aforementioned behaviors targeting their subordinates and peers. What Is Bullying/Workplace Bullying? Bullying is known by many names; aggression, incivility, mobbing, horizontal or lateral violence and intimidation are some of the synonyms that are associated with the term (Murray, 2009). Workplace bullying is a serious issue affecting the nursing profession. It is defined as any type of repetitive abuse in which the victim of bullying behavior suffers verbal abuse, threats or behaviors by the perpetrator that interfere with his or her job performance (Murray, 2009).Often, workplace bullying involves abuse and/or misuse or power and authority within an organization. Bullying behaviors creat e feelings of defenselessness in the victim and significantly demoralize his or her right to dignity in the workplace (Murray, 2009). Looking back at the example in the introduction, after the nurse spoke with others who have been charge and had to deal with the supervisor, it was found that many of the other nurses were treated the same way. The supervisor only spoke and behaved that way to nurses who were new to the charge nurse position.As it is a requirement for military nurses to act as charge nurse in order to get leadership experience, the supervisor liked to target the newer nurses because she could intimidate them. Nursing leaders must be able to work with others to achieve common goals and be able to assess and develop new opportunities for nurses (Finkelman, 2012). This supervisor creates such a hostile and uncomfortable environment the nurses were hesitant to approach her for any type of guidance for fear of being belittled. Ethical and Legal ConsiderationsThere are seve ral ethical principals, virtues of moral character and codes that are violated by nurses who engage in bullying behaviors. One principal is nonmaleficence, which is defined as requiring one to not engage in infliction of evil or harm on another (Matt, 2012). Since bullying behaviors have the specific intent of humiliating and demeaning another, nurses who bully others violate this principle. Justice is another principle that has many descriptions, but the most basic is fair treatment of all. All workers have a right to a safe and healthy work environment thus bullying behaviors violate the principle of justice.Bullying behavior also violate moral virtues that are associated with nursing. Discernment is the ability to make fitting judgments and reach decisions without being unduly influenced by fears (Matt, 2012). This virtue was definitely violated by my nursing supervisor. Nurses who bully also violate the virtues of compassion, integrity, and conscience; all characteristics that s how the nurse demonstrate weak moral character as well as weak Christian values and characteristics. There are two ethical codes that are violated by nurses who participate in bullying behaviors.The first is the International Council of Nurses (ICN) Code of Ethics for Nurses (Matt, 2012). There are many elements that the code addresses, but when pertain to bullying, the code that is violated pertains to nurses and coworkers. It states that, â€Å"the nurse sustains a cooperative relationship with coworkers in nursing and other fields† (Matt, 2012). Of course, the ANA Code of ethics is violated; specifically provision six which states that, â€Å"the nurse participates in establishing, maintaining and improving healthcare environments and conditions of employment†¦. through individual and collective action† (Finkelman, 2012).Bullying behaviors once again defeat these purposes. Although there are currently no laws in the US specifically targeting workplace bullying, as of May 2011, 16 bills addressing the issue were active in 11 states (The Healthy Workplace Campaign) (Matt, 2012). Violations are also addressed under the Occupational Safety and Health Act (OSHA). Violations of these regulations may result in citations and penalties ranging from temporary closure of a business to fines up to $70,000 per incident if an employer willfully or repeatedly violates the requirements (Matt, 2012).Not only is the employer subject to legal consequences, but the nurse who does the bullying can and will be held accountable as well. No one should be subjected to this type of difficulty while at work. Conclusion Healthcare leaders have a responsibility to employees and the public to provide work environments that are free from abuse and harassment When workplace bullying has been identified it is up to leaders to take appropriate action to ensure the abuse stops, the person is held accountable and steps are taken to ensure it does not happen again.Bullying n ot only affects the healthcare providers who are being targeted, but it affects the healthcare organizations as well. It is reported that bullying in the workplace can cost over $4 billion a year (Murray, 2009). It contributes to increased work dissatisfaction, absence from work and work-related injuries. Hospital administrators, human resource manages and nurse managers must educate themselves to ensure they have a clear understanding of their own responsibilities for providing a safe work environment. Individual nurses must educate themselves as well and not stand for bullying nor participate in bullying behavior.I believe nursing is a blessing and a gift from God; an artistic ability that not everyone is capable of doing. When a person decides to that advantage of this gift and blessing, it is disrespectful to the characteristics of God, which, if studied closely, are directly aligned with the virtues of nursing. I feel the following versus are direct words from God that hold us accountable for our behavior when it comes to nursing and taking care of others, be it our patients or our coworkers: 1 John 3:17 â€Å"But whoever has the world's goods, and beholds his brother in need and closes his heart against him, how does the love of God abide in him? ; Philippians 2:4 â€Å"do not merely look out for your own personal interests, but also for the interests of others. †; and Galatians 6:10 â€Å"So then, while we have opportunity, let us do good to all men, and especially to those who are of the household of the faith. † (Society, 1999). How can we say we love God, yet do our fellow man wrong? We have to take a close look in the mirror daily and seek God’s guidance to direct our paths, because if what we do is not pleasing to God, it’s all being done in vain. References Finkelman, A. 2012). Leadership and management for nurses: Core competencies for quality care (2nd ed. ). Upper Saddle River, NJ: Pearson. Matt, S. B. (2012). Ehtic al and legal issues associated with bullying in the nursing profession. Journal of Nursing Law, 9-13. Murray, J. S. (2009). Workplace bullying in nursing: A problem that can't be ignored. Medsurg Nursing, 273-6. Society, I. B. (1999). Comparative Study Bible: King James Version, Amplified Bible, New American Standard, New International Version. Grand Rapids: Zondervan.

BB&T Vision, Mission and Purpose statement

1. BB&T Vision, Mission and Purpose statement is considered an exemplary Mission Statement. Please read it and comment on the positives of this statement and defend your answer. I agree that BB&T Vision, Mission and Purpose statement can be used as an exemplary Mission Statement as it is well-organized and very informative. Firstly, this statement provides both theoretical and practical application – the example of Nicor Inc. mission statement is provided to illustrate how mission statements looks like and a theoretical explanation ensures deeper understanding of the subject.One more positive is that the paper outlines the importance of mission statement. It is argued that mission statement is business philosophy emphasizing the market, product and customer area and, thus, companies won’t ignore this moment. Further, mission statement outlines the most important questions about the goals and objectives directing and guiding in such a way company’s performance. Fi nally, mission statement provides detailed overview of the process of defining company’s mission statements.It would be of great help for companies which only started to run their own business. 2. BB&T Vision, Mission and Purpose statement is considered an exemplary Mission Statement. Please read it and comment on the negatives of this statement and defend your answer. It is rather hard to speak of negatives of the BB&T Vision, Mission and Purpose statement, but I think that it concentrates more on the process of developing mission statement and pays little attention to discussing its core elements as, for example, goals and objectives.In such a way, company gets acquainted with the process, but may fail to understand what is needed to initiate the process. Also I can’t agree that mission statement is necessary only if the company is forced to alter its products, technologies and market. According management and marketing fundamentals, no company can operate successful ly without mission statement as it hasn’t worked out direction and objectives.

Pareto Principle Essay

The term â€Å"Pareto principle† can also refer to Pareto efficiency. The Pareto principle (also known as the 80–20 rule, the law of the vital few, and the principle of factor sparsity) states that, for many events, roughly 80% of the effects come from 20% of the causes. Business? management consultant Joseph M. Juran suggested the principle and named it after Italian economist Vilfredo Pareto, who observed in 1906 that 80% of the land in Italy was owned by 20% of the population; he developed the principle by observing that 20% of the pea pods in his garden contained 80% of the peas. It is a common rule of thumb in business; e. g. , â€Å"80% of your sales come from 20% of your clients. † Mathematically, where something is shared among a sufficiently large set of participants, there must be a number k between 50 and 100 such that â€Å"k% is taken by (100 ? k)% of the parcipants. † The number k may vary from 50 (in the case of equal distribution, i. e. , 100% of the population have equal shares) to nearly 100 (when a tiny number of participants account for almost all of the resource). There is nothing special about the number 80% mathematically, but many real systems have k somewhere around this region of intermediate imbalance in distribution. The Pareto principle is only tangentially related to Pareto efficiency, which was also introduced by the same economist. Pareto developed both concepts in the context of the distribution of income and wealth among the population. In economics The original observation was in connection with population and wealth. Pareto noticed that 80% of Italy’s land was owned by 20% of the population. He then carried out surveys on a variety of other countries and found to his surprise that a similar distribution applied. Due to the scale? invariant nature of the power law relationship, the relationship applies also to subsets of the income range. Even if we take the 10 wealthiest individuals in the world, we see that the top three (Warren Buffett, Carlos Slim Helu, and Bill Gates) own as much as the next seven put together. A chart that gave the inequality a very visible and comprehensible form, the so? alled ‘champagne glass’ effect was contained in the 1992 United Nations Development Program Report, which showed the distribution of global income to be very uneven, with the richest 20% of the world’s population controlling 82. 7% of the world’s income. The Pareto principle has also been used to attribute the widening economic inequality in the United States to ‘skill? biased technical change’—i. e. , income growth accrues to those with the education and skills required to take advantage of new technology and globalization.

Financial Management (Determine the year-to-year percentage annual Essay

Financial Management (Determine the year-to-year percentage annual growth in total net sales) - Essay Example From analysing the sales performance trends over the past five years, it is likely that the company will achieve its target of 10% sales growth for the year 2005. From year 2001 to 2003 the company has experienced a total negative growth of 48% , which has been reversed in 2004 with a growth of 36%. This is possibly with the recapturing of lost market shares or customers. The growth of 10% for 2005 will be a sales increase of only $ 834.00, which will take the overall sales of the company to US$ 9,168.00. It is still less than what the company were achieving in 2001 and therefore, the company is likely to recapture its lost sales and reach the 2005 targets. Use the Percentage Sales Method and a 20% increase in sales to forecast Micro Chip's Consolidated Statement of Operations for the period September 26, 2004 through September 25, 2005. Assume a 15% tax rate and restructuring costs of 2% of the new sales figure.

The Crisis Of Fordism Essay Example | Topics and Well Written Essays - 3500 words

The Crisis Of Fordism - Essay Example The above mentioned process results to a phenomenon of mass worker, controlled in bureaucratic trade unions, which negotiate common wages that increase in relation to the production levels. The common consumption patterns indicate the homogenization of the working class and this leads to a market with homogeneous commodities and a match between demand and supply (Lipietz, 1984, p. 20). Notably, the balance between the supply and demand is achieved through the Keynesian macroeconomic policies, while the balance between wages and profits is obtained through collective bargaining power. The challenges of Fordism are economic, technical and social. To begin with, the technical challenges are characterized by the exhaustion of the increasing productivity by gaining economies of scale, intensifying labor and de-skilling of the workers. Secondly, the economic limits are characterized by declining rate of profits, which is as a result of falling productivity growth or limited market for the homogeneous consumer goods while the income rises. Finally, the social limits are characterized by the rapid growing pressure on managerial prerogative, profitability and on the public financed enhanced by the rising demands of the mass workers (Lipietz, 1984, p.30). From the year 1940 to around 1965, most of the industrialized countries took the advantage of the continuous growth and rapidly increasing rates of wages and profits in a parallel mode.... However, unlike in the earlier economic recessions, the above mentioned Fordist strategy did not help. Rather, the industrialized countries encountered a period of currency instability, continuous inflation and rapid growing rate of unemployment. Notably, the failure in the economic policy in the industrialized nations was caused by the globalization of production. For instance, the European, Japanese and American countries had been for a period of over thirty years expanding in order to gain economies of scale on a global level. In absence of any control by national governments, the international trading system practiced by the multinationals was coordinated by the global financial markets. As a result of the decline of the fixed exchange rates, the global competition among various currencies determined the internal economic principles of the international industrialized nations. For instance, reflation in one country was controlled by balance of payment crises, which in turn forced a rapid return to the deflationary policies (Frieden, 2007, p.120). After the governments of the industrialized nations lost control over their economies, the complete circle of increasing consumption and production was discontinued. Rather, the workers in the industrialized nations began to incur cuts in social benefits, mass rate of unemployment and stagnant money wages. As a result of the recurrence of the social difficulties of the past, new ways had to be implemented in order to solve the deepening crisis of Fordism. The Fordist crisis was an over accumulation crisis caused by the rapid spread of the various Fordist productions methods to the Japan and Western Europe, leading to a decline of profit rate and saturation of the global markets in the