卷扬机论文中英文资料外文翻译文献
英文原文
Control of Electric winch
For motor control, we know the best way is to use the style buttons to move the many simple manual console. And this console, in some applications may still be a good choice, as some complex control headache can also be used. This article describes in your design, build or purchase winch controller, you have the motor's basic electrical equipment and you will need to address the user interface command addressed.
First, the manual should be a manual control console type, so if you remove your finger buttons, hoist will stop. In addition, each control station equipped with an emergency need to brake, hoist the emergency brake to cut off all power, not just the control circuit. Think about it, if the hoist at the stop, it did not stop, you do need a way to cut off the fault line protection power. Set the table in the control of a key operated switch, is also a very good idea, especially in the line leading to the workstation can not control, you can use the switch.
(in the design of the console, even the simplest manual console, but also consider setting by specialized personnel to operate the safe operation of the
keys.)
Constant speed motor control
For a fixed speed winch actual control device is a three-phase starter. Turn the motor is reversed, by a simple switch controlled phase transformation sequence from ABC to CBA. These actions are completed by two three-pole contactor-style, and they are interlocked, so that they can not be simultaneously closed. NEC, required in addition to overload and short circuit protection devices. To protect the motor against overload due to mechanical effects caused by overheating in the heat to be installed inside the starter overload delay device. When the heat overload delay device overheating, it has a long double off the metal motor power. In addition In addition, you can also select a thermistor can be installed in the motor winding way, it can be used to monitor motor temperature changes. For the short-circuit protection, we generally used by motor fuses to achieve.
A linear current independent contactors, the contactors are configured should be more than the current main circuit contactor, so as to achieve the purpose of redundancy. This sets the current contactor is controlled by the security circuit, such as: emergency brake and the more-way limits.
We can use the limit switches to achieve the above operation. When you reach the end of the normal travel limit position, the hoist will stop, and you can only move the winch in the opposite direction (ie, the direction away from the limit position.) There is also need for a more limited way just in case, due to electrical or mechanical problems, leaving the operation of hoist limit bit more than normal. If you run into more limiter, linear contactor will open, therefore, can not be driven winch will exceed this limit position. If this happens, you need to ask a professional technician to check the lead to meet the more specific reasons limiter. Then, you can use the starter toggle switch inside the elastic recovery process to deal with more problems, rather than tripping device or a hand-off the current contacts.
A necessary condition for speed
Of course, the simple fixed speed starter is replaced by variable speed drives. This makes things start to get interesting again! At a minimum, you need to add a speed control dial operation platform. Joystick is a better user interface, because it makes you move parts of a more intuitive control.
Unfortunately, you can not just from your local console to send commands to control the old variable speed drives, in addition, you can not want it in the initial stages, will be able to enhance the safe and reliable and decentralized facilities. Most of the variable speed drive can not achieve these requirements, because they are not designed to do upgrading work. Drivers need to be set to release the brake before the motor can generate torque, and when parking, that is, before the revocation of torque, the brake will be the first action.
For many years, DC motors and drives provide a number of common solutions, such as when they are in a variety of speeds with good torque characteristics. For most of the hoist of the large demand for DC motor is very expensive, and that the same type of AC motor than the much more expensive. Although the early AC drives are not very useful, as they have a very limited scope of application of the speed, but produced only a small low-speed torque. Now, with the DC drives the development of low cost and a large number of available AC motors has led to a communication-driven revolution.
Variable speed AC drives in two series. Frequency converter has been widely known and, indeed, easy to use. These drives convert AC into DC, and then, and then convert it back to exchange, the exchange after the conversion is a different frequency. If the drive produced the exchange of 30Hz, 60Hz a normal motor will run at half speed. Theoretically, this is very good, but in practice, this will have a lot of problems. First of all, a typical linear motor 60Hz frequencies below 2Hz 3Hz area or there will be errors, and start cog (that urgent push, yank), or parking. This will limit your speed range lower than 20:1, almost not adapted to the operational phase of the fine adjustment. Second, many low-cost converter is not able to provide the rated torque at low speeds. Use of these drives, will result in the rapid move to upgrade the components or complete failure, precisely, when you try to upgrade a stable scientific instruments, you do not want to see this situation. Some new inverter is a closed-loop system (to get feedback from the motor to provide a more accurate speed control), and the motor will work quite well.
Another series of AC drives is the flow vector type drive. These components require installation of the spindle motor encoder, encoder makes use of these drives can accurately monitor the rotation of the motor armature. Processor accurately measured magnetic flux vector values that are required to
make the armature at a given speed rotation. These drives allow infinite speed, so you actually can produce at zero speed to rated torque. These drives provide precise speed and position control, so these drives in high performance applications to be welcomed.
(Based on PLC controllers provide system status and control options. This screen shows the operator full access to the nine-story elevator enhance the control panel.)
PLC-based systems
Is the full name of a PLC programmable logic controller. First of all, PLC controller developed to replace the fifties and sixties-based industrial control system relay, they work in harsh industrial indoor environments. These are modular systems that have a large variety of I / O modules. The modular system can easily achieve the semi-custom hardware configuration assembled, and the resulting configuration is also very reasonable price. These modules include: position control module, the counter, A / D and D / A converter, and a variety of physical state or physical contact with closed output module. Large number of different types of I / O components and PLC module property makes it an effective way to assemble custom and semi custom control system.
The biggest shortcoming of PLC systems is the lack of the real number of display to tell you what is being done and the PLC on the PLC program to help you.
T he first is professional entertainment for the large-scale PLC system is one of the original in Las Vegas, MGM (now Bailey Company) of the riding
and carriage system. Many manufacturers offer a standard PLC-based semi-automated acoustic systems and a host of signs, set the location of the command line interpreter, and the upgrading of the control system is also available. Using standard modules to set user-defined system configuration capability is based on the PLC controller of the greatest advantage.
High-end controller
For complex transmission, the controller became complex, more than speed, time and location control. They include complex instructions to write and record the movement contour, and the processing can immediately run the ability to multi-point instructions.
Many large opera house is toward the direction of point lift system, where each one is equipped with a rope to enhance independent winches, rope equivalent to those of each dimmer circuit. When more than one hoist is used to enhance the individual part, the hoist must be fully synchronous, or the load to shift, so will lead to a separate winch becomes the risk of overload. Control system must be able to be selected to keep pace winch, or a hoist winch is not able to maintain synchronization with the other, can provide the same high-speed parking capacity. For a typical speed of 240 ft / min and a winch to maintain the rate of error of between 1 / 8 points of equipment, you only have less than three microseconds of time to identify problems and try to correct the error The hoist speed, make sure you fail, you start all the winch stop the group. This will require a large amount of computation, fast I / O interface, and easy to use to write software.
For large rope control system has two very different solutions. The first is to use a separate console, the problem in general terms, this console should be installed in the appropriate location of the operator perspective. However, this not only from one angle to another angle, but still can not get an instruction to another instruction from the control. These difficulties have been partially resolved. Installed in different locations through the use of video cameras, and these cameras connected to the three-dimensional display graphics, these graphics enables the operator to observe from the perspective of any of the three coordinates in the expected direction of rope movement. These operators can make from a console for him at the actual angle, or closed circuit camera practical perspective, to observe the movement of the rope on the screen. For
the complex interrelated moving parts, makes the implementation of the above observation Failure to control and find out easier.
Another solution to the problem is a distributed system that uses multiple light console. This will allow the different operators in the same way the different aspects of control gear, we have improved the manual control device.
A vivid example is the flower in a vegetable market in central London, the Royal Opera House, the program uses the above, where the control console 240 with ten motors. Each console has five playback device, and has been open, so that each motor has been assigned to a single console. An operator and a console can control all the devices, however, often may be running a console platform screen upgrade, another console is a console on the transmission device, and the third console is used to the necessary background in the background image down.
(edge-type portable console allows the operator many advantages from the start to control the movement of the machine, and provide three-dimensional image display.)
Conclusion
A huge change in the rope control system, a workstation has been developed from a push-button to complex multi-user computerized control system. When the control system to buy rope, you can always find to meet your needs. Control system performance is the most important security and reliability. These are the true value of the property, and you can expect the price to buy a suitable way of security. With a certain product manufacturers to work, he will make you know how to install it. And he will make contact with you and the users, those users have with similar requests.
中文译文
电动卷扬机的控制
对于电动机的控制，我们所知道的最好的方式就是使用由许多点动式按钮组成的简单的手工操作台。而这种操作台在某些应用方面可能仍然是个不错的选择，如一些令人头痛的复杂的控制也可以用。这篇文章讲述了，在你设计、组建或是购买卷扬机控制器之前，你必须对电动机的基本电气设备和你将需要寻址的用户接口命令进行编址。
首先，手动控制台应该是手动控制型的，因此，如果你把你的手指移开按钮，卷扬机就会停车。另外，每个控制工作站都需要配备紧急制动闸，紧急制动闸可以切断卷扬机的所有电源，而不仅仅是控制电路的。仔细想想看，如果卷扬机在该停车时，它却没有停下来，你就确实需要一种故障保障的方法去切断线路的电源。在控制工作台上设置一个关键操作开关，也是一个非常好的主意，特别是在通向工作站的线路不能控制时，就可以用那个开关来控制。
(在设计控制台时，即使是最简单的手工控制台，也要考虑设置由专门人员操作的安全操作按键。)
控制定速电动机
对于一台定速卷扬机的实际控制设备是一台三相起动器。电动机的转向被反向，是通过简单的开关控制相序从A-B-C变换到C-B-A。这些动作
被完成，是通过两个三磁极式电流接触器，而且它们是互锁的，所以，它们不可能被同时关闭。NEC公司要求同时拥有过载和短路保护装置。为了保护电动机免受由于机械过载引起的过热的影响，在起动器内要安装热量过载延迟装置。当热量过载延迟装置过热时，它所拥有的双金属长条断开电动机的电源。除此外，还可以选择一台电热调节器可以用缠绕的方式安装在电动机上，它可以用于监控电动机的温度变化。对于短路保护，我们一般是通过电动机常用的熔断器来实现的。
一台独立的线性电流接触器，被配置的电流接触器应该超过主回路的电流接触器，从而达到冗余的目的。这台电流接触器是由安全电路来控制的，如：紧急制动和越程极限。
我们可以使用限位开关来实现上述的操作。当你到达正常的行程极限位置末端时，卷扬机就会停车，并且你只能够向相反的方向移动卷扬机(即远离极限位置的方向)。这里也需要一个越程限制以防万一，由于电气的或者机械的问题，而使卷扬机的运行超过正常的极限位。如果你碰到越程限制器，线形电流接触器就会打开，因此，卷扬机将无法被驱动超过这个极限位置。如果上述情况发生，就需要请专业的技术人员来检查导致碰到越程限制器的具体原因。然后，你就能够用起动器内部的弹力恢复拨动开关来处理越程的问题，而不是使用跳闸器或是手工切断电流接触器。
变速的必要条件
当然，简单的定速起动器被变速驱动器所取代。这就使事情开始变得有趣起来了！至少，你需要在控制操作台上增加一个速度表盘。操纵杆是一个较好的操作接口，由于它使你对部件的移动有一个更直观的控制。
不幸的是，你不能仅仅从你的本地控制台去发命令控制老式的变速驱动器，此外，你不能希望它在初始阶段，就能安全而可靠的提升与下放设备。大多数的变速驱动器不能实现上述的要求，因为它们并不是设计用来做提升工作的。驱动器需要设置成在制动器松开之前，就能够在电动机上产生扭矩，并且，当停车时，即在扭矩撤销之前，制动器将先动作。
许多年来，直流电动机和驱动器提供了一些普遍的解决方案，如它们在各种速度时都具有良好的力矩特性。对于大多数的卷扬机所需求的大型直流电动机是很贵的，那要比同类型的交流电动机贵得多。虽然，早期的交流驱动器不是非常有用，如它们有一个非常有限速度适用范围，而且仅产生低速小扭矩。如今，随着直流驱动器的发展，低成本而且大量可用的交流电动机的出现，导致了一场交流驱动的革命。
变速交流驱动器有两个系列。变频转换器已经家喻户晓，而且的确很
容易使用。这些驱动器将交流转换成直流，然后，再把它转换回交流，转换后的交流已经是不同频率的。如果驱动器产生30Hz的交流，一台正常的60Hz的电动机将以一半的速度运行。从理论上说，这非常好，但是，在实际中，这将会有很多的问题。首先，一台典型的60Hz的电动机在线性频率低于2Hz或是3Hz的区域会出现误差，并且，开始嵌齿(即急推，猛拉)，或是停车。这将限制你的速度范围低于20：1，几乎不适应于运行阶段的细微调节。其次，许多低成本的转换器也不能够在低速时提供额定扭矩。使用这些驱动器，将导致急速移动，或是对于提升部件完全的失效，准确地说，当你试图去平稳的提升一台科学仪器时，你不愿看到这样的情况。一些新型的变极器是闭环系统(从电动机获得反馈，提供更加准确的速度控制)，并且使电动机将会工作的相当好。
交流驱动器的另一个系列是流量矢量型驱动器。这些元器件要求在电动机的主轴上安装编码器，使用这些编码器会使驱动器可以准确地监控电机电枢的旋转。处理器测定了准确的磁性流量的矢量值，这些值要求使电枢在给定的速度下旋转。这些驱动器允许有无穷大的速度，因此，你实际能够在零速度时就产生额定扭矩。这些驱动器所提供的准确的速度和位置的控制，使这些驱动器在高性能应用方面受到欢迎。
(基于PLC的控制器提供有系统状态和控制选项。这个屏幕展示给操作者全面的访问卡内基霍尔德的九层电梯提升的控制面板。)
基于PLC的系统
一台PLC的全称是可编程序逻辑控制器。首先，PLC的控制器发展到取代了基于五六十年代的工业控制系统的继电器，它们工作在室内的恶劣的工业环境中。这些是模块化的系统，它们具有大量的各种各样的I/O模块。这些模块化的系统可以很容易的实现把半自定义的硬件配置组装起来，而这样得到的配置的价钱也很合理。这些模块包括：位置控制模块，计数
器，A/D和D/A转换器，以及各种实体状态或是物理接触闭式输出模块。大量不同类型的I/O元器件和PLC的模块属性使得它成为一条有效的途径去组装自定义和半自定义的控制系统。
对于PLC系统的最大的不足就是缺少真实的大量的显示功能，从而告诉你PLC正在做什么和帮助你对PLC进行编程。
第一台被用于大型娱乐场所的专业的PLC系统之一，是在拉斯维加斯的原米高梅电影制片公司(现在的贝利公司)的搭车和四轮马车系统上。许多的制造商提供了标准的基于PLC的系统和半自动化声学的标志的主机，设定命令行解释器的位置，以及提升控制系统也是可用的。使用标准的模块去组构用户自定义系统的能力是基于PLC的控制器的最大的优势。
高端控制器
对于复杂的传动装置，控制器开始变得复杂，超过了速度，时间以及位置控制。它们包括写出复杂的指令，记录轮廓线的移动，以及处理可以立即运行的多点指令的能力。
许多大型的歌剧院正向着点提升系统的方向发展，在那里为每一条提升绳索配置有一台独立的卷扬机，那些绳索等同于每条电路的调光器。当多台卷扬机被用来提升单个的部分时，这些卷扬机必须完全的同步，或是载荷能够转移，如此会导致一台单独的卷扬机变得有过载的危险。控制系统必须能够使被选的卷扬机保持同步，或是在一台卷扬机不能够保持与其他卷扬机同步时，能提供高速的同等的停车能力。对于一台典型的高速达240英尺/分钟和一台要保持卷扬机的彼此间的速度误差在1/8分之内的设备，你只有少于三微秒的时间去确认问题，并尝试纠正错误的卷扬机速度，在确定你失败后，你起动组中所有卷扬机的停车。这将需要大量计算，快速I/O接口，以及好用的写入软件。
对于大型的绳索控制系统有两种非常不同的解决方法。首先是，使用单独的控制台，对于一般的问题而言，这样的控制台应该安装在适合于操作者视角的位置。然而，这不仅不能够从一个角度到另一个角度观察，而且还不可以从一条指令到另一条指令的控制。这些困难已经被部分解决。通过使用安装在不同位置的视频摄像机，而且这些摄象机连接于三维屏幕图形，这些图形使得操作者可以从任意的视角去观察在三个坐标方向上的预期的绳索运动。这些可以使得操作者，从一个适合他在实际的操作台处的视角，或是实际的闭环电路照相机的视角，来观察在屏幕上的绳索的运动。对于有内部关联的部件的复杂的移动，上述的观察使得实现控制和查出故障原因变得更加简单。
另一个解决的方案就是分布式系统，这个系统使用了多个轻便的控制台。这将允许不同的操作者以同样的方式控制传动装置的不同方面，我们已经改进了手动控制装置。一个生动的例子，就是在伦敦中部一个蔬菜花卉市场的皇家歌剧院使用了上述的方案，在那里用十个控制台控制着240台电动机。每个控制台有五个录音重放装置，并且已经被开启，以便于每台电动机被指派给一个单独的控制台。一位操作者和一个控制台就能够控制所有的装置，但是，常常是一个控制台可能是运行台幕的提升，另一个控制台是控制台上的传动装置，以及第三个控制台被用来在后台将必要的背景画面放下。
(刃口式轻便的控制台允许多位操作者从最优点出发来控制机器的运动，并且提供三维图象的显示。)
结论
有巨大变化的绳索控制系统，已经从按钮式的工作站发展到复杂的多用户的计算机化的控制系统。当要购买绳索控制系统时，你总是可以找到满足你需要的。控制系统最重要的性能是安全性和可靠性。这些是有真实价值的性能，而且你会期望能以一个合适的价格买到这样的安全性。与某个确定的产品制造商共事，他会使你知道如何进行安装。而且，他将会让你和用户接触，那些用户有着与类似的要求。
Inventory management Inventory Control On the so-called "inventory control", many people will interpret it as a "storage management", which is actually a big distortion. The traditional narrow view, mainly for warehouse inventory control of materials for inventory, data processing, storage, distribution, etc., through the implementation of anti-corrosion, temperature and humidity control means, to make the custody of the physical inventory to maintain optimum purposes. This is just a form of inventory control, or can be defined as the physical inventory control. How, then, from a broad perspective to understand inventory control? Inventory control should be related to the company's financial and operational objectives, in particular operating cash flow by optimizing the entire demand and supply chain management processes (DSCM), a reasonable set of ERP control strategy, and supported by appropriate information processing tools, tools to achieved in ensuring the timely delivery of the premise, as far as possible to reduce inventory levels, reducing inventory and obsolescence, the risk of devaluation. In this sense, the physical inventory control to achieve financial goals is just a means to control the entire inventory or just a necessary part; from the perspective of organizational functions, physical inventory control, warehouse management is mainly the responsibility of The broad inventory control is the demand and supply chain management, and the whole company's responsibility. Why until now many people's understanding of inventory control, limited physical inventory control? The following two reasons can not be ignored: First, our enterprises do not attach importance to inventory control. Especially those who benefit relatively good business, as long as there is money on the few people to consider the problem of inventory turnover. Inventory control is simply interpreted as warehouse management, unless the time to spend money, it may have been to see the inventory problem, and see the results are often very simple procurement to buy more, or did not do warehouse departments . Second, ERP misleading. Invoicing software is simple audacity to call it ERP, companies on their so-called ERP can reduce the number of inventory, inventory control, seems to rely on their small software can get. Even as SAP, BAAN ERP world, the field of
Statistical hypothesis testing Adriana Albu，Loredana Ungureanu Politehnica University Timisoara,adrianaa@aut.utt.ro Politehnica University Timisoara,loredanau@aut.utt.ro Abstract In this article,we present a Bayesian statistical hypothesis testing inspection, testing theory and the process Mentioned hypothesis testing in the real world and the importance of, and successful test of the Notes. Key words Bayesian hypothesis testing; Bayesian inference;Test of significance Introduction A statistical hypothesis test is a method of making decisions using data, whether from a controlled experiment or an observational study (not controlled). In statistics, a result is called statistically significant if it is unlikely to have occurred by chance alone, according to a pre-determined threshold probability, the significance level. The phrase "test of significance" was coined by Ronald Fisher: "Critical tests of this kind may be called tests of significance, and when such tests are available we may discover whether a second sample is or is not significantly different from the first."[1] Hypothesis testing is sometimes called confirmatory data analysis, in contrast to exploratory data analysis. In frequency probability,these decisions are almost always made using null-hypothesis tests. These are tests that answer the question Assuming that the null hypothesis is true, what is the probability of observing a value for the test statistic that is at [] least as extreme as the value that was actually observed?) 2 More formally, they represent answers to the question, posed before undertaking an experiment,of what outcomes of the experiment would lead to rejection of the null hypothesis for a pre-specified probability of an incorrect rejection. One use of hypothesis testing is deciding whether experimental results contain enough information to cast doubt on conventional wisdom. Statistical hypothesis testing is a key technique of frequentist statistical inference. The Bayesian approach to hypothesis testing is to base rejection of the hypothesis on the posterior probability.[3][4]Other approaches to reaching a decision based on data are available via decision theory and optimal decisions. The critical region of a hypothesis test is the set of all outcomes which cause the null hypothesis to be rejected in favor of the alternative hypothesis. The critical region is usually denoted by the letter C. One-sample tests are appropriate when a sample is being compared to the population from a hypothesis. The population characteristics are known from theory or are calculated from the population.
吉林化工学院理学院 毕业论文外文翻译English Title（Times New Roman ，三号） 学生学号：08810219 学生姓名：袁庚文 专业班级：信息与计算科学0802 指导教师：赵瑛 职称副教授 起止日期：2012.2.27～2012.3.14 吉林化工学院 Jilin Institute of Chemical Technology
1 外文翻译的基本内容 应选择与本课题密切相关的外文文献（学术期刊网上的），译成中文，与原文装订在一起并独立成册。在毕业答辩前，同论文一起上交。译文字数不应少于3000个汉字。 2 书写规范 2.1 外文翻译的正文格式 正文版心设置为：上边距：3.5厘米，下边距：2.5厘米，左边距：3.5厘米，右边距：2厘米，页眉：2.5厘米，页脚：2厘米。 中文部分正文选用模板中的样式所定义的“正文”，每段落首行缩进2字；或者手动设置成每段落首行缩进2字，字体：宋体，字号：小四，行距：多倍行距1.3，间距：前段、后段均为0行。 这部分工作模板中已经自动设置为缺省值。 2.2标题格式 特别注意：各级标题的具体形式可参照外文原文确定。 1．第一级标题（如：第1章绪论）选用模板中的样式所定义的“标题1”，居左；或者手动设置成字体：黑体，居左，字号：三号，1.5倍行距，段后11磅，段前为11磅。 2．第二级标题（如：1.2 摘要与关键词）选用模板中的样式所定义的“标题2”，居左；或者手动设置成字体：黑体，居左，字号：四号，1.5倍行距，段后为0，段前0.5行。 3．第三级标题（如：1.2.1 摘要）选用模板中的样式所定义的“标题3”，居左；或者手动设置成字体：黑体，居左，字号：小四，1.5倍行距，段后为0，段前0.5行。 标题和后面文字之间空一格（半角）。 3 图表及公式等的格式说明 图表、公式、参考文献等的格式详见《吉林化工学院本科学生毕业设计说明书（论文）撰写规范及标准模版》中相关的说明。
例： 参考文献： [1]毛蕴诗. 跨国公司战略竞争与国际直接投资[M].广州: 中山大学出版社 [2]ALEXANDER N. International Retailing [M].Oxford:Blackwell Business,1997 .日本税法[M].战宪斌,郑林根,译.北京:法律出版社.信息技术与信息服务[M]//许厚泽,赵其国.信息技术与应用.,於方,蒋红强,等. 建立中国绿色GDP 核算体系:机遇、挑战与对策[C]//潘岳,绿色GDP 核算体系国际研讨会论文集. 北京:中国环境科学出版社, 2004:35-42. 黄祖洽.软凝聚态物理研究进展[J].北京师范大学学报:自然科学版,2005,41(1) :N, MYERS H. European Retail Expansion in South East Asia[J].European 1999,34(2): 45-50. 丁文祥.数字革命与竞争国际化[N]. 中国青年报, 2000-11-20 (15). 张志祥.间断动力系统的随机扰动及其在守恒律方程中的应用[D].北京:北京大学数学学院,1998. 冯西桥.核反应堆压力管 道与压力容器的LBB 分析[R].北京:清华大学核能技术设计研究院莫少强.数字式中文全文文献格式的设计与研究[J/OL].情报学报,1999,18(4):https://www.doczj.com/doc/da5457937.html,/periodical/qbxb/qbxb990407.htm. 奚纪荣,邱志方.武略文韬:军事知识趣谈[M/OL].上海: 汉语大词典出版社, 2001: [13]杜莲.“9·11”事件影响英国出版news/20010929/200109290016.htm. 英文作者姓名全部 用大写字母
农村社会养老保险的现状、问题与对策研究社会保障对国家安定和经济发展具有重要作用，“城乡二元经济”现象日益凸现，农村社会保障问题客观上成为社会保障体系中极为重要的部分。建立和完善农村社会保障制度关系到农村乃至整个社会的经济发展，并且对我国和谐社会的构建至关重要。我国农村社会保障制度尚不完善，因此有必要加强对农村独立社会保障制度的构建，尤其对农村养老制度的改革，建立健全我国社会保障体系。从户籍制度上看，我国居民养老问题可分为城市居民养老和农村居民养老两部分。对于城市居民我国政府已有比较充足的政策与资金投人，使他们在物质和精神方面都能得到较好地照顾，基本实现了社会化养老。而农村居民的养老问题却日益突出，成为摆在我国政府面前的一个紧迫而又棘手的问题。 一、我国农村社会养老保险的现状 关于农村养老，许多地区还没有建立农村社会养老体系，已建立的地区也存在很多缺陷，运行中出现了很多问题，所以完善农村社会养老保险体系的必要性与紧迫性日益体现出来。 （一）人口老龄化加快 随着城市化步伐的加快和农村劳动力的输出，越来越多的农村青壮年人口进入城市，年龄结构出现“两头大，中间小”的局面。中国农村进入老龄社会的步伐日渐加快。第五次人口普查显示：中国65岁以上的人中农村为5938万，占老龄总人口的67.4%.在这种严峻的现实面前，农村社会养老保险的徘徊显得极其不协调。 （二）农村社会养老保险覆盖面太小 中国拥有世界上数量最多的老年人口，且大多在农村。据统计，未纳入社会保障的农村人口还很多，截止2000年底，全国7400多万农村居民参加了保险，占全部农村居民的11.18%，占成年农村居民的11.59%.另外，据国家统计局统计，我国进城务工者已从改革开放之初的不到200万人增加到2003年的1.14亿人。而基本方案中没有体现出对留在农村的农民和进城务工的农民给予区别对待。进城务工的农民既没被纳入到农村养老保险体系中，也没被纳入到城市养老保险体系中，处于法律保护的空白地带。所以很有必要考虑这个特殊群体的养老保险问题。
英语专业毕业论文翻译 类论文 Document number：NOCG-YUNOO-BUYTT-UU986-1986UT
毕业论文（设计）Title:The Application of the Iconicity to the Translation of Chinese Poetry 题目:象似性在中国诗歌翻译中的应用 学生姓名孔令霞 学号 BC09150201 指导教师祁晓菲助教 年级 2009级英语本科（翻译方向）二班 专业英语 系别外国语言文学系
黑龙江外国语学院本科生毕业论文（设计）任务书 摘要
索绪尔提出的语言符号任意性，近些年不断受到质疑，来自语言象似性的研究是最大的挑战。语言象似性理论是针对语言任意性理论提出来的，并在不断发展。象似性是当今认知语言学研究中的一个重要课题，是指语言符号的能指与所指之间的自然联系。本文以中国诗歌英译为例，探讨象似性在中国诗歌翻译中的应用，从以下几个部分阐述：（1）象似性的发展；（2）象似性的定义及分类；（3）中国诗歌翻译的标准；（4）象似性在中国诗歌翻译中的应用，主要从以下几个方面论述：声音象似、顺序象似、数量象似、对称象似方面。通过以上几个方面的探究，探讨了中国诗歌翻译中象似性原则的重大作用，在诗歌翻译过程中有助于得到“形神皆似”和“意美、音美、形美”的理想翻译效果。 关键词：象似性；诗歌；翻译
Abstract The arbitrariness theory of language signs proposed by Saussure is severely challenged by the study of language iconicity in recent years. The theory of iconicity is put forward in contrast to that of arbitrariness and has been developing gradually. Iconicity, which is an important subject in the research of cognitive linguistics, refers to a natural resemblance or analogy between the form of a sign and the object or concept. This thesis mainly discusses the application of the iconicity to the translation of Chinese poetry. The paper is better described from the following parts: (1) The development of the iconicity; (2) The definition and classification of the iconicity; (3) The standards of the translation to Chinese poetry; (4) The application of the iconicity to the translation of Chinese poetry, mainly discussed from the following aspects: sound iconicity, order iconicity, quantity iconicity, and symmetrical iconicity. Through in-depth discussion of the above aspects, this paper could come to the conclusion that the iconicity is very important in the translation of poetry. It is conductive to reach the ideal effect of “the similarity of form and spirit” and “the three beauties”. Key words: the iconicity; poetry; translation
软件专业毕业论文外文文献中英文翻译 Object landscapes and lifetimes Tech nically, OOP is just about abstract data typing, in herita nee, and polymorphism, but other issues can be at least as importa nt. The rema in der of this sect ion will cover these issues. One of the most importa nt factors is the way objects are created and destroyed. Where is the data for an object and how is the lifetime of the object con trolled? There are differe nt philosophies at work here. C++ takes the approach that con trol of efficie ncy is the most importa nt issue, so it gives the programmer a choice. For maximum run-time speed, the storage and lifetime can be determined while the program is being written, by placing the objects on the stack (these are sometimes called automatic or scoped variables) or in the static storage area. This places a priority on the speed of storage allocatio n and release, and con trol of these can be very valuable in some situati ons. However, you sacrifice flexibility because you must know the exact qua ntity, lifetime, and type of objects while you're writing the program. If you are trying to solve a more general problem such as computer-aided desig n, warehouse man ageme nt, or air-traffic con trol, this is too restrictive. The sec ond approach is to create objects dyn amically in a pool of memory called the heap. In this approach, you don't know un til run-time how many objects you n eed, what their lifetime is, or what their exact type is. Those are determined at the spur of the moment while the program is runnin g. If you n eed a new object, you simply make it on the heap at the point that you n eed it. Because the storage is man aged dyn amically, at run-time, the amount of time required to allocate storage on the heap is sig ni fica ntly Ion ger tha n the time to create storage on the stack. (Creat ing storage on the stack is ofte n a si ngle assembly in structio n to move the stack poin ter dow n, and ano ther to move it back up.) The dyn amic approach makes the gen erally logical assumpti on that objects tend to be complicated, so the extra overhead of finding storage and releas ing that storage will not have an importa nt impact on the creati on of an object .In additi on, the greater flexibility is esse ntial to solve the gen eral program ming problem. Java uses the sec ond approach, exclusive". Every time you want to create an object, you use the new keyword to build a dyn amic in sta nee of that object. There's ano ther issue, however, and that's the lifetime of an object. With Ian guages that allow objects to be created on the stack, the compiler determines how long the object lasts and can automatically destroy it. However, if you create it on the heap the compiler has no kno wledge of its lifetime. In a Ianguage like C++, you must determine programmatically when to destroy the
本科毕业论文（设计）文献综述和外文翻译 撰写要求与格式规范 一、毕业论文（设计）文献综述 （一）毕业论文（设计）文献综述的内容要求 1．封面：由学院统一设计，普通A4纸打印即可。 2.正文 综述正文部分需要阐述所选课题在相应学科领域中的发展进程和研究方向，特别是近年来的发展趋势和最新成果。通过与中外研究成果的比较和评论，说明自己的选题是符合当前的研究方向并有所进展，或采用了当前的最新技术并有所改进，目的是使读者进一步了解本课题的意义。文中的用语、图纸、表格、插图应规范、准确，量和单位的使用必须符合国家标准规定，引用他人资料要有标注。 文献综述字数在5000字以上。 正文前须附500字左右中文摘要，末尾须附参考文献。 参考文献的著录按在文献综述中出现的先后顺序编号。 期刊类文献书写方法:[序号]作者（不超过3人，多者用等表示）.题（篇）名[J].刊名,出版年,卷次（期次）:起止页次.
图书类文献书写方法:[序号]作者.书名[M].版本.出版地:出版者,出版年:起止页次. 论文集类文献书写方法:[序号]作者.篇名[C].论文集名.出版地:出版者,出版年:起止页次. 学位论文类书写方法:[序号]作者.篇名[D].出版地:单位名称,年份. 电子文献类书写方法:[序号]主要责任者. 题名:其他题名信息[文献类型标志/文献载体标志 ]出版地:出版者,出版年（更新或修改日期）[引用日期].获取和访问途径. 参考文献篇数应符合学院毕业论文（设计）工作的要求。 （二）毕业论文（设计）文献综述撰写与装订的格式规范 第一部分：封面 1.封面：由学院统一设计，“本科生毕业论文（设计）”根据作业实际明确为“论文”或“设计”，其它文本、表格遇此类情况同样处理。 第二部分：文献综述主题 1.中文摘要与关键词 摘要标题（五号，宋体，顶格，加粗）
毕业论文（设计）外文翻译 题目：中国上市公司偏好股权融资：非制度性因素 系部名称：经济管理系专业班级:会计082班 学生姓名：任民学号： 200880444228 指导教师：冯银波教师职称:讲师 年月日
译文： 中国上市公司偏好股权融资：非制度性因素 国际商业管理杂志 2009.10 摘要：本文把重点集中于中国上市公司的融资活动，运用西方融资理论，从非制度性因素方面，如融资成本、企业资产类型和质量、盈利能力、行业因素、股权结构因素、财务管理水平和社会文化，分析了中国上市公司倾向于股权融资的原因，并得出结论，股权融资偏好是上市公司根据中国融资环境的一种合理的选择。最后，针对公司的股权融资偏好提出了一些简明的建议。 关键词：股权融资，非制度性因素，融资成本 一、前言 中国上市公司偏好于股权融资，根据中国证券报的数据显示，1997年上市公司在资本市场的融资金额为95.87亿美元，其中股票融资的比例是72.5％，，在1998年和1999年比例分别为72.6％和72.3％，另一方面，债券融资的比例分别是17.8％，24.9％和25.1％。在这三年，股票融资的比例，在比中国发达的资本市场中却在下跌。以美国为例，当美国企业需要的资金在资本市场上，于股权融资相比他们宁愿选择债券融资。统计数据显示，从1970年到1985年，美日企业债券融资占了境外融资的91.7％，比股权融资高很多。阎达五等发现，大约中国3/4的上市公司偏好于股权融资。许多研究的学者认为，上市公司按以下顺序进行外部融资：第一个是股票基金，第二个是可转换债券，三是短期债务，最后一个是长期负债。许多研究人员通常分析我国上市公司偏好股权是由于我们国家的经济改革所带来的制度性因素。他们认为，上市公司的融资活动违背了西方古典融资理论只是因为那些制度性原因。例如，优序融资理论认为，当企业需要资金时，他们首先应该转向内部资金（折旧和留存收益），然后再进行债权融资，最后的选择是股票融资。在这篇文章中，笔者认为，这是因为具体的金融环境激活了企业的这种偏好，并结合了非制度性因素和西方金融理论，尝试解释股权融资偏好的原因。
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本科毕业设计（论文）中英文对照翻译 院（系部）电气工程与自动化 专业名称电子信息工程 年级班级 04级7班 学生姓名 指导老师
Infrared Remote Control System Abstract Red outside data correspondence the technique be currently within the scope of world drive extensive usage of a kind of wireless conjunction technique,drive numerous hardware and software platform support. Red outside the transceiver product have cost low, small scaled turn, the baud rate be quick, point to point SSL, be free from electromagnetism thousand Raos etc.characteristics, can realization information at dissimilarity of the product fast, convenience, safely exchange and transmission, at short distance wireless deliver aspect to own very obvious of advantage.Along with red outside the data deliver a technique more and more mature, the cost descend, red outside the transceiver necessarily will get at the short distance communication realm more extensive of application. The purpose that design this system is transmit cu stomer’s operation information with infrared rays for transmit media, then demodulate original signal with receive circuit. It use coding chip to modulate signal and use decoding chip to demodulate signal. The coding chip is PT2262 and decoding chip is PT2272. Both chips are made in Taiwan. Main work principle is that we provide to input the information for the PT2262 with coding keyboard. The input information was coded by PT2262 and loading to high frequent load wave whose frequent is 38 kHz, then modulate infrared transmit dioxide and radiate space outside when it attian enough power. The receive circuit receive the signal and demodulate original information. The original signal was decoded by PT2272, so as to drive some circuit to accomplish
本科毕业设计（论文）外文翻译基本规范 一、要求 1、与毕业论文分开单独成文。 2、两篇文献。 二、基本格式 1、文献应以英、美等国家公开发表的文献为主（Journals from English speaking countries）。 2、毕业论文翻译是相对独立的，其中应该包括题目、作者（可以不翻译）、译文的出处（杂志的名称）（5号宋体、写在文稿左上角）、关键词、摘要、前言、正文、总结等几个部分。 3、文献翻译的字体、字号、序号等应与毕业论文格式要求完全一致。 4、文中所有的图表、致谢及参考文献均可以略去，但在文献翻译的末页标注：图表、致谢及参考文献已略去(见原文)。（空一行，字体同正文） 5、原文中出现的专用名词及人名、地名、参考文献可不翻译，并同原文一样在正文中标明出处。 二、毕业论文（设计）外文翻译 （一）毕业论文（设计）外文翻译的内容要求 外文翻译内容必须与所选课题相关，外文原文不少于6000个印刷符号。译文末尾要用外文注明外文原文出处。 原文出处：期刊类文献书写方法：[序号]作者（不超过3人，多者用等或et al表示）.题（篇）名[J].刊名（版本）,出版年，卷次（期次）：起止页次. 原文出处：图书类文献书写方法：[序号]作者.书名[M].版本.出版地：出版者,出版年.起止页次. 原文出处：论文集类文献书写方法：[序号]作者.篇名[A].编著者.论文集名[C]. 出版地：出版者，出版年.起止页次。 要求有外文原文复印件。 （二）毕业论文（设计）外文翻译的撰写与装订的格式规范 第一部分：封面
1.封面格式:见“毕业论文（设计）外文翻译封面”。普通A4纸打印即可。 第二部分：外文翻译主题 1.标题 一级标题，三号字，宋体，顶格，加粗 二级标题，四号字，宋体，顶格，加粗 三级标题，小四号字，宋体，顶格，加粗 2.正文 小四号字，宋体。 第三部分：版面要求 论文开本大小：210mm×297mm（A4纸） 版芯要求：左边距：25mm，右边距：25mm，上边距：30mm，下边距：25mm，页眉边距：23mm，页脚边 距：18mm 字符间距：标准 行距：1.25倍 页眉页角：页眉的奇数页书写—浙江师范大学学士学位论文外文翻译。页眉的偶数页书写—外文翻译 题目。在每页底部居中加页码。（宋体、五号、居中） 装订顺序是：封皮、中文翻译、英文原文复印件。
Real-time interactive optical micromanipulation of a mixture of high- and low-index particles Peter John Rodrigo, Vincent Ricardo Daria and Jesper Glückstad Optics and Plasma Research Department, Ris? National Laboratory, DK-4000 Roskilde, Denmark jesper.gluckstad@risoe.dk http://www.risoe.dk/ofd/competence/ppo.htm Abstract: We demonstrate real-time interactive optical micromanipulation of a colloidal mixture consisting of particles with both lower (n L < n0) and higher (n H > n0) refractive indices than that of the suspending medium (n0). Spherical high- and low-index particles are trapped in the transverse plane by an array of confining optical potentials created by trapping beams with top-hat and annular cross-sectional intensity profiles, respectively. The applied method offers extensive reconfigurability in the spatial distribution and individual geometry of the optical traps. We experimentally demonstrate this unique feature by simultaneously trapping and independently manipulating various sizes of spherical soda lime micro- shells (n L≈ 1.2) and polystyrene micro-beads (n H = 1.57) suspended in water (n0 = 1.33). ?2004 Optical Society of America OCIS codes: (140.7010) Trapping, (170.4520) Optical confinement and manipulation and (230.6120) Spatial Light Modulators. References and links 1. A. Ashkin, “Optical trapping and manipulation of neutral particles using lasers,” Proc. Natl. Acad. Sci. USA 94, 4853-4860 (1997). 2. K. Svoboda and S. M. Block, “Biological applications of optical forces,” Annu. Rev. Biophys. Biomol. Struct. 23, 247-285 (1994). 3. D. G. Grier, “A revolution in optical manipulation,” Nature 424, 810-816 (2003). 4. M. P. MacDonald, G. C. Spalding and K. Dholakia, “Microfluidic sorting in an optical lattice,” Nature 426, 421-424 (2003). 5. J. Glückstad, “Microfluidics: Sorting particles with light,” Nature Materials 3, 9-10 (2004). 6. A. Ashkin, “Acceleration and trapping of particles by radiation-pressure,”Phys. Rev. Lett. 24, 156-159 (1970). 7. A. Ashkin, J. M. Dziedzic, J. E. Bjorkholm and S. Chu, “Observation of a single-beam gradient force optical trap for dielectric particles,” Opt. Lett. 11, 288-290 (1986). 8. K. Sasaki, M. Koshioka, H. Misawa, N. Kitamura, and H. Masuhara, “Optical trapping of a metal particle and a water droplet by a scanning laser beam,” Appl. Phys. Lett. 60, 807-809 (1992). 9. K. T. Gahagan and G. A. Swartzlander, “Trapping of low-index microparticles in an optical vortex,” J. Opt. Soc. Am. B 15, 524-533 (1998). 10. K. T. Gahagan and G. A. Swartzlander, “Simultaneous trapping of low-index and high-index microparticles observed with an optical-vortex trap,” J. Opt. Soc. Am. B 16, 533 (1999). 11. M. P. MacDonald, L. Paterson, W. Sibbett, K. Dholakia, P. Bryant, “Trapping and manipulation of low-index particles in a two-dimensional interferometric optical trap,” Opt. Lett. 26, 863-865 (2001). 12. R. L. Eriksen, V. R. Daria and J. Glückstad, “Fully dynamic multiple-beam optical tweezers,” Opt. Express 10, 597-602 (2002), https://www.doczj.com/doc/da5457937.html,/abstract.cfm?URI=OPEX-10-14-597. 13. P. J. Rodrigo, R. L. Eriksen, V. R. Daria and J. Glückstad, “Interactive light-driven and parallel manipulation of inhomogeneous particles,” Opt. Express 10, 1550-1556 (2002), https://www.doczj.com/doc/da5457937.html,/abstract.cfm?URI=OPEX-10-26-1550. 14. V. Daria, P. J. Rodrigo and J. Glückstad, “Dynamic array of dark optical traps,” Appl. Phys. Lett. 84, 323-325 (2004). 15. J. Glückstad and P. C. Mogensen, “Optimal phase contrast in common-path interferometry,” Appl. Opt. 40, 268-282 (2001). 16. S. Maruo, K. Ikuta and H. Korogi, “Submicron manipulation tools driven by light in a liquid,” Appl. Phys. Lett. 82, 133-135 (2003). #3781 - $15.00 US Received 4 February 2004; revised 29 March 2004; accepted 29 March 2004 (C) 2004 OSA 5 April 2004 / Vol. 12, No. 7 / OPTICS EXPRESS 1417