财务风险管理
中英文资料翻译
Financial Risk Management
Although financial risk has increased significantly in recent years, risk and risk management are not contemporary issues. The result of increasingly global markets is that risk may originate with events thousands of miles away that have nothing to do with the domestic market. Information is available instantaneously, which means that change, and subsequent market reactions, occur very quickly. The economic climate and markets can be affected very quickly by changes in exchange rates, interest rates, and commodity prices. Counterparties can rapidly become problematic. As a result, it is important to ensure financial risks are identified and managed appropriately. Preparation is a key component of risk management.
What Is Risk?
Risk provides the basis for opportunity. The terms risk and exposure have subtle differences in their meaning. Risk refers to the probability of loss, while exposure is the possibility of loss, although they are often used interchangeably. Risk arises as a result of exposure.
Exposure to financial markets affects most organizations, either directly or indirectly. When an organization has financial market exposure, there is a possibility of loss but also an opportunity for gain or profit. Financial market exposure may provide strategic or competitive benefits.
Risk is the likelihood of losses resulting from events such as changes in market prices. Events with a low probability of occurring, but that may result in a high loss, are particularly troublesome because they are
often not anticipated. Put another way, risk is the probable variability of returns.
Since it is not always possible or desirable to eliminate risk, understanding it is an important step in determining how to manage it. Identifying exposures and risks forms the basis for an appropriate financial risk management strategy.
How Does Financial Risk?
Financial risk arises through countless transactions of a financial nature, including sales and purchases, investments and loans, and various other business activities. It can arise as a result of legal transactions, new projects, mergers and acquisitions, debt financing, the energy component of costs, or through the activities of management, stakeholders, competitors, foreign governments, or weather. When financial prices change dramatically, it can increase costs, reduce revenues, or otherwise adversely impact the profitability of an organization. Financial fluctuations may make it more difficult to plan and budget, price goods and services, and allocate capital.
There are three main sources of financial risk:
1. Financial risks arising from an organization’s exposure to changes in market prices, such as interest rates, exchange rates, and commodity prices.
2. Financial risks arising from the actions of, and transactions with, other organizations such as vendors, customers, and counterparties in derivatives transactions
3. Financial risks resulting from internal actions or failures of the organization, particularly people, processes, and systems
What Is Financial Risk Management?
Financial risk management is a process to deal with the uncertainties resulting from financial markets. It involves assessing the financial
risks facing an organization and developing management strategies consistent with internal priorities and policies. Addressing financial risks proactively may provide an organization with a competitive advantage. It also ensures that management, operational staff, stakeholders, and the board of directors are in agreement on key issues of risk.
Managing financial risk necessitates making organizational decisions about risks that are acceptable versus those that are not. The passive strategy of taking no action is the acceptance of all risks by default.
Organizations manage financial risk using a variety of strategies and products. It is important to understand how these products and strategies work to reduce risk within the context of the organization’s risk tolerance and objectives.
Strategies for risk management often involve derivatives. Derivatives are traded widely among financial institutions and on organized exchanges. The value of derivatives contracts, such as futures, forwards, options, and swaps, is derived from the price of the underlying asset. Derivatives trade on interest rates, exchange rates, commodities, equity and fixed income securities, credit, and even weather.
The products and strategies used by market participants to manage financial risk are the same ones used by speculators to increase leverage and risk. Although it can be argued that widespread use of derivatives increases risk, the existence of derivatives enables those who wish to reduce risk to pass it along to those who seek risk and its associated opportunities.
The ability to estimate the likelihood of a financial loss is highly desirable. However, standard theories of probability often fail in the analysis of financial markets. Risks usually do not exist in isolation, and the interactions of several exposures may have to be considered in
developing an understanding of how financial risk arises. Sometimes, these interactions are difficult to forecast, since they ultimately depend on human behavior.
The process of financial risk management is an ongoing one. Strategies need to be implemented and refined as the market and requirements change. Refinements may reflect changing expectations about market rates, changes to the business environment, or changing international political conditions, for example. In general, the process can be summarized as follows:
1、Identify and prioritize key financial risks.
2、Determine an appropriate level of risk tolerance.
3、Implement risk management strategy in accordance with policy.
4、Measure, report, monitor, and refine as needed.
Diversification
For many years, the riskiness of an asset was assessed based only on the variability of its returns. In contrast, modern portfolio theory considers not only an asset’s riskiness, but also its contribution to the overall riskiness of the portfolio to which it is added. Organizations may have an opportunity to reduce risk as a result of risk diversification.
In portfolio management terms, the addition of individual components to a portfolio provides opportunities for diversification, within limits.
A diversified portfolio contains assets whose returns are dissimilar, in other words, weakly or negatively correlated with one another. It is useful to think of the exposures of an organization as a portfolio and consider the impact of changes or additions on the potential risk of the total.
Diversification is an important tool in managing financial risks. Diversification among counterparties may reduce the risk that unexpected events adversely impact the organization through defaults.
Diversification among investment assets reduces the magnitude of loss if one issuer fails. Diversification of customers, suppliers, and financing sources reduces the possibility that an organization will have its business adversely affected by changes outside management’s control. Although the risk of loss still exists, diversification may reduce the opportunity for large adverse outcomes.
Risk Management Process
The process of financial risk management comprises strategies that enable an organization to manage the risks associated with financial markets. Risk management is a dynamic process that should evolve with an organization and its business. It involves and impacts many parts of an organization including treasury, sales, marketing, legal, tax, commodity, and corporate finance.
The risk management process involves both internal and external analysis. The first part of the process involves identifying and prioritizing the financial risks facing an organization and understanding their relevance. It may be necessary to examine the organization and its products, management, customers, suppliers, competitors, pricing, industry trends, balance sheet structure, and position in the industry. It is also necessary to consider stakeholders and their objectives and tolerance for risk.
Once a clear understanding of the risks emerges, appropriate strategies can be implemented in conjunction with risk management policy. For example, it might be possible to change where and how business is done, thereby reducing the organization’s exposure and risk. Alternatively, existing exposures may be managed with derivatives. Another strategy for managing risk is to accept all risks and the possibility of losses.
There are three broad alternatives for managing risk:
1. Do nothing and actively, or passively by default, accept all risks.
2. Hedge a portion of exposures by determining which exposures can and
should be hedged.
3. Hedge all exposures possible.
Measurement and reporting of risks provides decision makers with information to execute decisions and monitor outcomes, both before and after strategies are taken to mitigate them. Since the risk management process is ongoing, reporting and feedback can be used to refine the system by modifying or improving strategies.
An active decision-making process is an important component of risk management. Decisions about potential loss and risk reduction provide a forum for discussion of important issues and the varying perspectives of stakeholders.
Factors that Impact Financial Rates and Prices
Financial rates and prices are affected by a number of factors. It is essential to understand the factors that impact markets because those factors, in turn, impact the potential risk of an organization. Factors that Affect Interest Rates
Interest rates are a key component in many market prices and an important economic barometer. They are comprised of the real rate plus a component for expected inflation, since inflation reduces the purchasing power of a lender’s assets .The greater the term to maturity, the greater the uncertainty. Interest rates are also reflective of supply and demand for funds and credit risk.
Interest rates are particularly important to companies and governments because they are the key ingredient in the cost of capital. Most companies and governments require debt financing for expansion and capital projects. When interest rates increase, the impact can be significant on borrowers. Interest rates also affect prices in other financial markets, so their impact is far-reaching.
Other components to the interest rate may include a risk premium to
reflect the creditworthiness of a borrower. For example, the threat of political or sovereign risk can cause interest rates to rise, sometimes substantially, as investors demand additional compensation for the increased risk of default.
Factors that influence the level of market interest rates include:
1、Expected levels of inflation
2、General economic conditions
3、Monetary policy and the stance of the central bank
4、Foreign exchange market activity
5、Foreign investor demand for debt securities
6、Levels of sovereign debt outstanding
7、Financial and political stability
Yield Curve
The yield curve is a graphical representation of yields for a range of terms to maturity. For example, a yield curve might illustrate yields for maturity from one day (overnight) to 30-year terms. Typically, the rates are zero coupon government rates.
Since current interest rates reflect expectations, the yield curve provides useful information about the market’s expectations of future interest rates. Implied interest rates for forward-starting terms can be calculated using the information in the yield curve. For example, using rates for one- and two-year maturities, the expected one-year interest rate beginning in one year’s time can be determined.
The shape of the yield curve is widely analyzed and monitored by market participants. As a gauge of expectations, it is often considered to be a predictor of future economic activity and may provide signals of a pending change in economic fundamentals.
The yield curve normally slopes upward with a positive slope, as lenders/investors demand higher rates from borrowers for longer lending
terms. Since the chance of a borrower default increases with term to maturity, lenders demand to be compensated accordingly.
Interest rates that make up the yield curve are also affected by the expected rate of inflation. Investors demand at least the expected rate of inflation from borrowers, in addition to lending and risk components. If investors expect future inflation to be higher, they will demand greater premiums for longer terms to compensate for this uncertainty. As a result, the longer the term, the higher the interest rate (all else being equal), resulting in an upward-sloping yield curve.
Occasionally, the demand for short-term funds increases substantially, and short-term interest rates may rise above the level of longer term interest rates. This results in an inversion of the yield curve and a downward slope to its appearance. The high cost of short-term funds detracts from gains that would otherwise be obtained through investment and expansion and make the economy vulnerable to slowdown or recession. Eventually, rising interest rates slow the demand for both short-term and long-term funds. A decline in all rates and a return to a normal curve may occur as a result of the slowdown.
Source: Karen A. Horcher, 2005. “What Is Financial Risk Management?”. Essentials
of Financial Risk Management, John Wiley & Sons, Inc.pp.1-22.
财务风险管理
尽管近年来金融风险大大增加，但风险和风险管理不是当代的主要问题。全球市场越来越多的问题是，风险可能来自几千英里以外的与这些事件无关的国外市场。意味着需要的信息可以在瞬间得到，而其后的市场反应，很快就发生了。经济气候和市场可能会快速影响外汇汇率变化、利率及大宗商品价格，交易对手会迅速成为一个问题。因此，重要的一点是要确保金融风险是可以被识别并且管理得当的。准备是风险管理工作的一个关键组成部分。
什么是风险？
风险给机会提供了基础。风险和暴露的条款让它们在含义上有了细微的差别。风险是指有损失的可能性，而暴露是可能的损失，尽管他们通常可以互换。风险起因是由于暴露。
金融市场的暴露影响大多数机构，包括直接或间接的影响。当一个组织的金融市场暴露，有损失的可能性，但也是一个获利或利润的机会。金融市场的暴露可以提供战略性或竞争性的利益。
风险损失的可能性事件来自如市场价格的变化。事件发生的可能性很小，但这可能导致损失率很高，特别麻烦，因为他们往往比预想的要严重得多。换句话说，可能就是变异的风险回报。
由于它并不总是可能的，或者能满意地把风险消除，在决定如何管理它中了解它是很重要的一步。识别暴露和风险形式的基础需要相应的财务风险管理策略。
财务风险是如何产生的呢？
无数金融性质的交易包括销售和采购，投资和贷款，以及其他各种业务活动，产生了财务风险。它可以出现在合法的交易中，新项目中，兼并和收购中，债务融资中，能源部分的成本中，或通过管理的活动，利益相关者，竞争者，外国政府，或天气出现。当金融的价格变化很大，它可以增加成本，降低财政收入，或影响其他有不利影响的盈利能力的组织。金融波动可能使人们难以规划和预算商品和服务的价格，并分配资金。
有三种金融风险的主要来源：
1、金融风险起因于组织所暴露出来的市场价格的变化，如利率、汇率、和大宗商品价格。
2、引起金融风险的行为有与其他组织的交易如供应商、客户，和对方在金融衍生产品中的交易。
3、由于内部行动或失败的组织，特别是人、过程和系统所造成的金融风险。
什么是财务风险管理？
财务风险管理是用来处理金融市场中不确定的事情的。它涉及到一个组织所面临的评估和组织的发展战略、内部管理的优先事项和当政策一致时的财务风
险。企业积极应对金融风险可以使企业成为一个具有竞争优势的组织。它还确保管理，业务人员，利益相关者，董事会董事在对风险的关键问题达成协议。
金融风险管理组织就必须作出那些不被接受的有关风险的决定。那些被动不采取行动的战略是在默认情况下接受所有的风险。
组织使用各种策略和产品来管理金融风险。重要的是要了解这些产品和战略方面，通过工作来减少该组织内的风险承受能力和目标范围内的风险。
风险管理的策略往往涉及衍生工具。在金融机构和有组织的交易所，衍生物广泛地进行交易。衍生工具的合约的价值，如期货，远期，期权和掉期，是源自相关资产的价格。衍生物利用利率，汇率，商品，股票和固定收入的证券，信贷，甚至是天气进行交易。
这些产品和市场参与者使用策略来管理金融风险，与由投机者用来提高风险的杠杆作用是相同。虽然可以认为，衍生工具的广泛使用增加了风险，衍生品的存在使那些希望通过把它传递给那些寻求风险及相关机会的人降低了风险。
估计财务损失的可能性是非常令人满意的。然而，概率标准的理论往往在金融市场的分析中不适用。风险通常不会孤立存在的，通常会和几个风险的相互作用，必须认真考虑在发展中国家的金融风险是如何产生的。有时，这些相互作用是很难预测的，因为它们最终取决于人的行为。
金融风险管理是一个持续不断的过程。随着市场需求的变化和完善，战略必须得到执行。有关的修改反映不断变化的市场利率，变化的预期营商环境，或例如不断变化的国际政治条件。一般来说，这个过程可以概括如下：
1、识别并优先考虑关键的财务风险。
2、确定适当的风险容忍程度。
3、按照政策实施风险管理战略。
4、按需要衡量，报告，监控和改进。
多样化
多年来，公司资产的风险评价的可变性仅仅基于其回报。与此形成对比的是,现代投资组合理论不仅考虑了一项资产的风险，而且是经济体总体风险的组合。由于风险多样化，组织可以有机会来降低风险。
在投资组合管理方面，在一定限度内给个别部件组合提供了多样化的机会。
一个多元化的资产组合中包含的回报是不同的，换句话说，彼此之间的关系是弱或负面的。考虑到一个投资组合的风险是非常有用的，并且应考虑改变或增加的潜在风险的总数。
多样化是一个管理金融风险的重要工具。通过预设的组织，对手之间的多样化可以减少突发事件对组织所造成的不利影响而引起的风险。其中投资资产多元化减少了发行人失败的损失程度。多样化的客户、供应商和金融来源减少了一个组织的贸易被外面变化控制的负面影响的可能性。虽然损失的风险仍然存在，多样化的机会可以减少大的不良结果。
风险管理过程
金融风险管理过程中的战略使一个组织去管理与金融相关的风险市场。风险管理是一个动态过程，应逐步发展成一个组织和它的生意。它涉及和影响了许多方面，包括国债，销售，营销，法律，税务，商品组织和企业融资。
风险管理过程包括内部和外部分析。该进程的第一部分包括确定和排列金融机构面临的风险和了解其相关性。有必要审查该组织及其产品，管理，客户，供应商，竞争对手，价格，行业的发展趋势，资产负债结构，并在行业中的地位。也有必要考虑利益相关者和他们的目标和风险承受能力。
一旦清楚地了解这些风险的出现，就可实施适当的策略会同风险管理政策。例如，有可能改变的地方，从而减少该组织的暴露和风险。另外，可能对现有的衍生工具进行风险管理。另一种经营战略风险是接受所有的风险和损失的可能性。
有三个广泛的风险管理办法：
1、什么都不做，在默认情况下，积极或被动地接受一切风险。
2、对冲一部分，通过确定那些可以而且应该进行对冲的风险。
3、所有可能的风险对冲。
风险的计量和报告提供给决策者与信息执行者决定和监测的结果，在它的前面和后面都采取策略来减轻。由于风险管理进程仍在进行，报告和反馈可以用来精化系统的修改或改进策略体系。
活跃的决策过程是风险管理的重要组成部分。讨论潜在的损失和为降低风险的决策提供了一个讨论重要问题与各种关于利益相关者的观点的场所。
财务比率的影响因素和价格
财务比率及价格受多项因素的影响。关键是要了解影响市场的因素，因为这些因素，反过来影响到一个组织的潜在风险。
影响利率的因素
利率是许多市场价格的主要组成部分和重要的经济晴雨表。它们是由真实利率加上通货膨胀的预期成分组成的，因为通货膨胀降低了贷款人的资产购买力。离到期日越近，它的不确定性就越大。利率也是资金的供给和需求和信贷风险的反射。
利率对企业和政府来说是非常重要的，因为他们是资金成本的关键因素。大多数公司和政府债务融资需要扩展和基建项目。当利率增加，对借款人有显著的影响。利率也影响到其他金融市场的价格，所以他们的影响是深远的。
对利率的其他组件可能包括一个风险溢价，以反映借款人的信用。例如，政治或主权风险的威胁可能导致利率上升，有时很大，因为随着投资者需求的增加，额外的补偿违约风险也会增加。
影响市场利率水平的因素包括：
1、通货膨胀的预期水平
2、总体经济状况
3、货币政策和央行的立场
4、外汇市场活动
5、外国投资者对债务证券化的需求
6、外债突出的水平
7、金融和政治稳定
收益率曲线
收益率曲线产量是一种图形法，表示的是一系列条件成熟。例如，一个收益率曲线可能说明产量在(一天一夜之间成熟)30年里的关系。通常情况下，利率是零息政府率。
由于目前的利率反映的是预期的，收益曲线提供了有关未来市场预期的利率的有用信息。前向启动利率的默示条款可以计算收益曲线的信息。例如，使用一两个年到期利率，预计的一年期利率在一年的时间开始时才能确定。
对收益曲线的形状进行了分析和对广泛的市场参与者进行监测。由于人们对它的期望，它通常被认为是未来经济活动的预测和可能提供的经济基本面有待改变的信号。
一般产量的收益率曲线向上倾斜是具有正斜率，就像贷方或投资者要求更高的利率因为贷款期限和借款人的持续的时间更长了。由于期限至到期日，借款人违约的机会增加，贷款人要求相应的补偿。
利率构成的收益率曲线也受预期的通货膨胀率影响。除了借款人的贷款和风险的部分，投资者要求借款人至少达到预期的通货膨胀率。如果投资者预期的未来的通胀率会变得更高, 他们将会被要求延长还款期限，以弥补这种不确定性产生的更多的保费。因此，期限越长，利率越高(在其它条件相同的情况)，一个向上倾斜的收益率曲线就产生。
有时，短期资金的需求大幅增加，短期利率可能上升超过了长期利率的水平。收益曲线向下倾斜，这是它的外观反演的结果。短期资金成本高，否则将有损于通过投资获得扩张，使经济增长放缓或衰退。最后，利率上升使短期和长期资金的需求都减少。在所有利率下降到一个正常的曲线，可能会出现由于经济增长放缓而带来的回报。
出处:[美]卡伦·A·霍契.《什么是财务风险管理？》.《财务风险管理要点》.
约翰.威立国际出版公司,2005:P1-22.
中等分辨率制备分离的 快速色谱技术 W. Clark Still,* Michael K a h n , and Abhijit Mitra Departm(7nt o/ Chemistry, Columbia Uniuersity,1Veu York, Neu; York 10027 ReceiLied January 26, 1978 我们希望找到一种简单的吸附色谱技术用于有机化合物的常规净化。这种技术是适于传统的有机物大规模制备分离，该技术需使用长柱色谱法。尽管这种技术得到的效果非常好，但是其需要消耗大量的时间，并且由于频带拖尾经常出现低复原率。当分离的样本剂量大于1或者2g时，这些问题显得更加突出。近年来，几种制备系统已经进行了改进，能将分离时间减少到1-3h，并允许各成分的分辨率ΔR f≥（使用薄层色谱分析进行分析）。在这些方法中，在我们的实验室中，媒介压力色谱法1和短柱色谱法2是最成功的。最近，我们发现一种可以将分离速度大幅度提升的技术，可用于反应产物的常规提纯，我们将这种技术称为急骤色谱法。虽然这种技术的分辨率只是中等（ΔR f≥），而且构建这个系统花费非常低，并且能在10-15min内分离重量在的样本。4 急骤色谱法是以空气压力驱动的混合介质压力以及短柱色谱法为基础，专门针对快速分离，介质压力以及短柱色谱已经进行了优化。优化实验是在一组标准条件5下进行的，优化实验使用苯甲醇作为样本，放在一个20mm*5in.的硅胶柱60内，使用Tracor 970紫外检测器监测圆柱的输出。分辨率通过持续时间（r）和峰宽（w,w/2）的比率进行测定的（Figure 1），结果如图2-4所示，图2-4分别放映分辨率随着硅胶颗粒大小、洗脱液流速和样本大小的变化。
The smart grid Smart grid is the grid intelligent (electric power), also known as the "grid" 2.0, it is based on the integration, high-speed bidirectional communication network, on the basis of through the use of advanced sensor and measuring technology, advanced equipme nt technology, the advanced control method, and the application of advanced technology of decision support system, realize the power grid reliability, security, economic, efficient, environmental friendly and use the security target, its main features include self-healing, incentives and include user, against attacks, provide meet user requirements of power quality in the 21st century, allow all sorts of different power generation in the form of access, start the electric power market and asset optimizatio n run efficiently. The U.S. department of energy (doe) "the Grid of 2030" : a fully automated power transmission network, able to monitor and control each user and power Grid nodes, guarantee from power plants to end users among all the nodes in the whole process of transmission and distribution of information and energy bi-directional flow. China iot alliance between colleges: smart grid is made up of many parts, can be divided into:intelligent substation, intelligent power distribution network, intelli gent watt-hourmeter,intelligent interactive terminals, intelligent scheduling, smart appliances, intelligent building electricity, smart city power grid, smart power generation system, the new type of energy storage system.Now a part of it to do a simple i ntroduction. European technology BBS: an integration of all users connected to the power grid all the behavior of the power transmission network, to provide sustained and effective economic and security of power. Chinese academy of sciences, institute of electrical: smart grid is including all kinds of power generation equipment, power transmission and distribution network, power equipment and storage equipment, on the basis of the physical power grid will be modern advanced sensor measurement technology, network technology, communication
企业财务风险及应对探讨文献综述 重庆工商大学会计专业200X级X班XX 指导老师XXX 目录 摘要 ............................................................................................................................... 错误!未定义书签。 一、财务风险基础理论研究在理论界，财务风险已经成为现在财务理论的核心内容，得到了学者的广泛关注和重视。财务风险与企业资金的筹措、运用、管理以及安全密切相关，它是从价值方面反映企业在理财活动里边以及处理财务关系中所遇到的风险。.......................... 错误!未定义书签。 1、财务风险的概念研究........................................................................................ 错误!未定义书签。James C. Van Horn, John M. Wachowicz Jr(2001)在《Fundamental of Financial Management》里面更宽泛地说明了财务风险包括可能丧失偿债能力的风险，以及由于使用财务杠杆而导致的每股收益变动。 ......................................................................................................................................... 错误!未定义书签。 2、财务风险的类型研究........................................................................................ 错误!未定义书签。 二、财务风险产生因素研究.......................................................................................... 错误!未定义书签。 三、财务风险管理策略研究.......................................................................................... 错误!未定义书签。参考文献 ......................................................................................................................... 错误!未定义书签。
New technique of the computer network Abstract The 21 century is an ages of the information economy, being the computer network technique of representative techniques this ages, will be at very fast speed develop soon in continuously creatively, and will go deep into the people's work, life and study. Therefore, control this technique and then seem to be more to deliver the importance. Now I mainly introduce the new technique of a few networks in actuality live of application. keywords Internet Network System Digital Certificates Grid Storage 1. Foreword Internet turns 36, still a work in progress Thirty-six years after computer scientists at UCLA linked two bulky computers using a 15-foot gray cable, testing a new way for exchanging data over networks, what would ultimately become the Internet remains a work in progress. University researchers are experimenting with ways to increase its capacity and speed. Programmers are trying to imbue Web pages with intelligence. And work is underway to re-engineer the network to reduce Spam (junk mail) and security troubles. All the while threats loom: Critics warn that commercial, legal and political pressures could hinder the types of innovations that made the Internet what it is today. Stephen Crocker and Vinton Cerf were among the graduate students who joined UCLA professor Len Klein rock in an engineering lab on Sept. 2, 1969, as bits of meaningless test data flowed silently between the two computers. By January, three other "nodes" joined the fledgling network.
机械设计理论 机械设计是一门通过设计新产品或者改进老产品来满足人类需求的应用技术科学。它涉及工程技术的各个领域，主要研究产品的尺寸、形状和详细结构的基本构思，还要研究产品在制造、销售和使用等方面的问题。 进行各种机械设计工作的人员通常被称为设计人员或者机械设计工程师。机械设计是一项创造性的工作。设计工程师不仅在工作上要有创造性，还必须在机械制图、运动学、工程材料、材料力学和机械制造工艺学等方面具有深厚的基础知识。如前所诉，机械设计的目的是生产能够满足人类需求的产品。发明、发现和科技知识本身并不一定能给人类带来好处，只有当它们被应用在产品上才能产生效益。因而，应该认识到在一个特定的产品进行设计之前，必须先确定人们是否需要这种产品。 应当把机械设计看成是机械设计人员运用创造性的才能进行产品设计、系统分析和制定产品的制造工艺学的一个良机。掌握工程基础知识要比熟记一些数据和公式更为重要。仅仅使用数据和公式是不足以在一个好的设计中做出所需的全部决定的。另一方面，应该认真精确的进行所有运算。例如，即使将一个小数点的位置放错，也会使正确的设计变成错误的。 一个好的设计人员应该勇于提出新的想法，而且愿意承担一定的风险，当新的方法不适用时，就使用原来的方法。因此，设计人员必须要有耐心，因为所花费的时间和努力并不能保证带来成功。一个全新的设计，要求屏弃许多陈旧的，为人们所熟知的方法。由于许多人墨守成规，这样做并不是一件容易的事。一位机械设计师应该不断地探索改进现有的产品的方法，在此过程中应该认真选择原有的、经过验证的设计原理，将其与未经过验证的新观念结合起来。 新设计本身会有许多缺陷和未能预料的问题发生，只有当这些缺陷和问题被解决之后，才能体现出新产品的优越性。因此，一个性能优越的产品诞生的同时，也伴随着较高的风险。应该强调的是，如果设计本身不要求采用全新的方法，就没有必要仅仅为了变革的目的而采用新方法。 在设计的初始阶段，应该允许设计人员充分发挥创造性，不受各种约束。即使产生了许多不切实际的想法，也会在设计的早期，即绘制图纸之前被改正掉。只有这样，才不致于堵塞创新的思路。通常，要提出几套设计方案，然后加以比较。很有可能在最后选定的方案中，采用了某些未被接受的方案中的一些想法。
Computer Program 1 Introduction Computer Program, set of instructions that directs a computer to perform someprocessing function or combination of functions. For the instructions to be carried out, a computer must execute a program, that is, the computer reads the program, and then follow the steps encoded in the program in a precise order until completion. A program can be executed many different times, with each execution yielding a potentially different result depending upon the options and data that the user gives the computer. Programs fall into two major classes: application programs and operating systems. An application program is one that carries out somefunction directly for a user, such as word processing or game-playing. An operating system is a program that manages the computer and the various resources and devices connected to it, such as RAM,hard drives, monitors, keyboards, printers, and modems,so that they maybe used by other programs. Examples of operating systems are DOS, Windows 95, OS\2, and UNIX. 2 Program Development Software designers create new programs by using special applications programs, often called utility programs or development programs. A programmer uses another type of program called a text editor to write the new program in a special notation called a programming language. With the text editor, the programmer creates a text file, which is an ordered list of instructions, also called the program source file. The individual instructions that make up the program source file are called source code. At this point, a special applications program translates the source code into machine language, or object code— a format that the operating system
中英文资料外文翻译 财务风险重要性分析 译文： 摘要：本文探讨了美国大型非金融企业从1964年至2008年股票价格风险的决定小性因素。我们通过相关结构以及简化模型，研究诸如债务总额，债务期限，现金持有量，及股利政策等公司财务特征，我们发现，股票价格风险主要通过经营和资产特点，如企业年龄，规模，有形资产，经营性现金流及其波动的水平来体现。与此相反，隐含的财务风险普遍偏低，且比产权比率稳定。在过去30年，我们对财务风险采取的措施有所减少，反而对股票波动（如独特性风险）采取的措施逐渐增加。因此，股票价格风险的记载趋势比公司的资产风险趋势更具代表性。综合二者，结果表明，典型的美国公司谨慎管理的财政政策大大降低了财务风险。因此，现在看来微不足道的剩余财务风险相对底层的非金融公司为一典型的经济风险。 关键词：资本结构；财务风险；风险管理；企业融资 1 绪论 2008年的金融危机对金融杠杆的作用产生重大影响。毫无疑问，向金融机构的巨额举债和内部融资均有风险。事实上，有证据表明，全球主要银行精心策划的杠杆（如通过抵押贷款和担保债务）和所谓的“影子银行系统”可能是最近的经济和金融混乱的根本原因。财务杠杆在非金融企业的作用不太明显。迄今为止，尽管资本市场已困在危机中，美国非金融部门的问题相比金融业的困境来说显得微不足道。例如，非金融企业破产机遇仅限于自20世纪30年代大萧条以来的最大经济衰退。事实上，非金融公司申请破产的事件大都发生在美国各行业（如汽车制造业，报纸，房地产）所面临的基本经济压力即金融危机之前。这令人惊讶的事实引出了一个问题“非金融公司的财务风险是如何重要？”。这个问题的核心是关于公司的总风险以及公司风险组成部分的各决定因素的不确定性。 最近在资产定价和企业融资再度引发的两个学术研究中分析了股票价格风险利
英文翻译 A comprehensive overview of substations Along with the economic development and the modern industry developments of quick rising, the design of the power supply system become more and more completely and system. Because the quickly increase electricity of factories, it also increases seriously to the dependable index of the economic condition, power supply in quantity. Therefore they need the higher and more perfect request to the power supply. Whether Design reasonable, not only affect directly the base investment and circulate the expenses with have the metal depletion in colour metal, but also will reflect the dependable in power supply and the safe in many facts. In a word, it is close with the economic performance and the safety of the people. The substation is an importance part of the electric power system, it is consisted of the electric appliances equipments and the Transmission and the Distribution. It obtains the electric power from the electric power system, through its function of transformation and assign, transport and safety. Then transport the power to every place with safe, dependable, and economical. As an important part of power’s transport and control, the transformer substation must change the mode of the traditional design and control, then can adapt to the modern electric power system, the development of modern industry and the of trend of the society life. Electric power industry is one of the foundations of national industry and national economic development to industry, it is a coal, oil, natural gas, hydropower, nuclear power, wind power and other energy conversion into electrical energy of the secondary energy industry, it for the other departments of the national economy fast and stable development of the provision of adequate power, and its level of development is a reflection of the country's economic development an important indicator of the level. As the power in the industry and the importance of the national economy, electricity transmission and distribution of electric energy used in these areas is an indispensable component.。Therefore, power transmission and distribution is critical. Substation is to enable superior power plant power plants or power after adjustments to the lower load of books is an important part of power transmission. Operation of its functions, the capacity of a direct impact on the size of the lower load power, thereby affecting the industrial production and power consumption.Substation system if a link failure, the system will protect the part of action. May result in power outages and so on, to the production and living a great disadvantage. Therefore, the substation in the electric power system for the protection of electricity reliability,
外文翻译 英文原文 Belt Conveying Systems Development of driving system Among the methods of material conveying employed，belt conveyors play a very important part in the reliable carrying of material over long distances at competitive cost．Conveyor systems have become larger and more complex and drive systems have also been going through a process of evolution and will continue to do so．Nowadays，bigger belts require more power and have brought the need for larger individual drives as well as multiple drives such as 3 drives of 750 kW for one belt(this is the case for the conveyor drives in Chengzhuang Mine)．The ability to control drive acceleration torque is critical to belt conveyors’performance．An efficient drive system should be able to provide smooth，soft starts while maintaining belt tensions within the specified safe limits．For load sharing on multiple drives．torque and speed control are also important considerations in the drive system’s design. Due to the advances in conveyor drive control technology，at present many more reliable．Cost-effective and performance-driven conveyor drive systems covering a wide range of power are available for customers’ choices[1]. 1 Analysis on conveyor drive technologies 1．1 Direct drives Full-voltage starters．With a full-voltage starter design，the conveyor head shaft is direct-coupled to the motor through the gear drive．Direct full-voltage starters are adequate for relatively low-power, simple-profile conveyors．With direct fu11-voltage starters．no control is provided for various conveyor loads and．depending on the ratio between fu11-and no-1oad power requirements，empty starting times can be three or four times faster than full load．The maintenance-free starting system is simple，low-cost and very reliable．However, they cannot control starting torque and maximum stall torque；therefore．they are
本科毕业论文（设计） 外文翻译 Financial Risk Management Although financial risk has increased significantly in recent years, risk and risk management are not contemporary issues. The result of increasingly global markets is that risk may originate with events thousands of miles away that have nothing to do with the domestic market. Information is available instantaneously, which means that change, and subsequent market reactions, occur very quickly. The economic climate and markets can be affected very quickly by changes in exchange rates, interest rates, and commodity prices. Counterparties can rapidly become problematic. As a result, it is important to ensure financial risks are identified and managed appropriately. Preparation is a key component of risk management. What Is Risk? Risk provides the basis for opportunity. The terms risk and exposure have subtle differences in their meaning. Risk refers to the probability of loss, while exposure is the possibility of loss, although they are often used interchangeably. Risk arises as a result of exposure. Exposure to financial markets affects most organizations, either directly or indirectly. When an organization has financial market exposure, there is a possibility of loss but also an opportunity for gain or profit. Financial market exposure may provide strategic or competitive benefits. Risk is the likelihood of losses resulting from events such as changes in market prices. Events with a low probability of occurring, but that may result in a high loss, are particularly troublesome because they are often not anticipated. Put another way, risk is the probable variability of returns. Since it is not always possible or desirable to eliminate risk, understanding it is an important step in determining how to manage it.
第一篇： 航空博物馆与航空展示公园 巴特罗米耶杰·基谢列夫斯基 飞翔的概念、场所的精神、老机场的建筑---克拉科夫新航空博物馆理性地吸取了这些元素，并将它们整合到一座建筑当中。Rakowice-Czyzyny机场之前的旧飞机修理库为新建筑的平面和高度设定了模数比例。在此基本形态上进一步发展，如同裁切和折叠一架纸飞机，生成了一座巨大的建筑。其三角形机翼是由混凝土制成，却如同风动螺旋桨一样轻盈。这个机翼宽大通透，向各个方向开敞。它们的形态与组织都是依据内部功能来设计的。机翼部分为3个不平衡的平面，使内外景观在不断变化中形成空间的延续性，并且联系了建筑内的视觉焦点和室外的展览区。 新航空展示公园的设计连接了博物馆的8栋建筑和户外展览区，并与历史体验建立联系。从前的视觉轴线与通道得到尊重，旧的道路得到了完善，朝向飞机场和跑道的空间被限定出来。每栋建筑展示了一个主题或是一段飞行史。建筑周围伸展出巨大的平台，为特殊主题的室外展览提供了空间。博物馆容纳了超过150架飞机、引擎、飞行复制品、成套的技术档案和历史图片。这里的特色收藏是飞机起源开始的各种飞行器，如Jatho1903、Grade1909、莱特兄弟1909年的飞机模型和1911年的鸽式单翼机。 The first passage: Museum for aviation and aviation exhibition park Bartiomiej Kislelewski The idea of flying, the spirit of place, the structure of the historic airfield – the new Museum of Aviation in Krakow takes up these references intellectually and synthesizes them into a building. The old hangars of the former airport Rakowice Czyzyny set the modular scale for the footprint and the height of the new building. Developed from this basic shape, as if cut out and folded like a paper airplane, a large structure has been generated, with triangular wings made of concrete and yet as light as a wind-vane propeller. The wings are generously glazed and open in all directions. Their form and arrangement depend on the interior uses. In the floor plans of the wings, the three offset
A Distributed Approach for Track Occupancy Detection Abstract This paper investigates the problem of track occupancy detection in distributed settings. Track occupancy detection determines which tracks are occupied in a railway system. For each track, the Neyman–Pearson structure is applied to reach the local decision. Globally, it is a multiple hypotheses testing problem. The Bayesian approach is employed to minimize the probability of the global decision error. Based on the prior probabilities of multiple hypotheses and the approximation of the prior probabilities of multiple hypotheses and the approximationofthereceiving operation characteristic curve of the local detector, a person-by-person optimization method is implemented to obtain the fusion rule and the local strategies off line. The results are illustrated through an example constructed from in situ devices. Key Words:Track occupancy detection,Neyman–Pearson, Generalized likelihood ratio test, Bayesian approach,Distributed detection 1Introduction With respect to the majority of railway systems in China, a quasi-moving block method is employed to specify the safe zone of a train. A key piece of knowledge to be determined is the set of track segments that are occupied, i.e., track occupancy detection. Then the speed restriction curves for the following trains are calculated accordingly. When there are misdetections, collisions may happen; additionally, false alarms may lead to declines of line capacity. Track occupancy detection is achieved by a set of track circuits. The track circuit is a crucial device mainly composed of a transmitter–receiver pair and a track segment. The measurement is the receiving signal at the end of the track. For each segment, a decision is made locally and individually, which leads to frequent ambiguities on which tracks are occupied for the whole line. It means that the false alarm rate of the line increases greatly. Besides, for the next generation of railway systems, a moving block method is adopted. Such a method requires the exact position and velocity of the train. However, those data are not provided in the current detection mechanism.