实现的

The QAM modulation based on single chip computer and A/D converter is finally presented.

最后分析了采用单片机和D/A变换器实现的QAM调制解调方法。

Methods of measuring the input components, their prices and output elements are given. We put forward some new methods in measuring components, including composite depreciation rate, equality working hours, and proxy of input resources. Using the mature methods of efficiency measurement and decomposition available, we make a detailed investigation into 4 listing companies of oil industry with a span of 12 periods. Basic conclusions we draw include: labor inputs affects oil field output mostly in China; China oil fields operates in a low technical efficiency level average of 0.61; Increasing difficulties with expanding output has the greatest influence on cost; Cost efficiency of China oil fields averages at 1.47; Total factor productivity of China oil fields averages at 10%, accounting for 79% of the total output growth rate of 12.6%; Frontier technology progress contributes the most to TFP of China oil fields with 17 percentage points.

本文沿用了已有文献中关于效率计量与分解的成熟方法，对我国三家油田上市公司与一家上市石油公司12个时期的技术效率与成本效率进行了详细的计量、分解与分析，得到的基本结论有：劳动力投入是影响我国油田上市公司产出的最重要的影响因素；油田的平均技术效率仅为0.61；产出项是影响成本的显著因素，这说明随着产出增加而出现的开采难度增加是导致开采成本增加的重要因素；油田的平均成本效率为1.47；全要素生产率的增长平均在10％左右，占到了产出平均增长率12.6％的79％，表明我国油田的生产率的提高主要是依靠全要素生产率的提高而实现的，只有21％左右的产出增长是依靠要素投入而实现的；前沿技术进步是油田全要素生产率增长的主要源泉，在2001～2004年期间，前沿技术进步对油田生产率的贡献高达17个百分点。

The paper analyze it from these aspects: Firstly, in the communism, when the survival necessity and feast necessity are satisfied enough, the self-fulfillment necessity will become the most important necessity in people's life. The freedom labour is in the course of self-fulfilling. Secondly, the"truth""good"are united in the labour , which make it possess the nature of beauty. Thirdly, in the game, people disremember the outside bondage and enjoy the happiness and freedom. Compared with the game, the freedom labour has many same characters and is more fascinating. Finally, the labour and the people's development have many affinities: In primeval, the autonomic labour was corresponded with the people's"primordial enrichment". In private owned society, alienation labour was corresponed with the people's macrocephalic development. In the communism, the freedom labour will corresponded with the all-powerful development. The development of human history incline to the trend that history makes everyone develop all-powerfully, the freedom labor will be the final choice.

真正自由劳动所具有的特质，将使其成为人们生活的第一需要：(1)从需求的层次性看，在未来社会，当生存的需要和享受的需要得到满足之后，自我实现的需要将成为人们生活中最重要的需求，而真正自由的劳动就是自我实现的过程；(2)真正自由的劳动在于真、善在劳动中的统一，使得劳动具有美的性质；(3)在游戏中，人们忘却了外在的束缚，得到快乐和自由的体验；较之游戏，真正自由劳动具有诸多相同的性质，将更加引人入胜；(4)劳动和人的发展有着密切的关系：原始时代的自主劳动对应着人的发展的"原始的丰富"；私有制时期，劳动的异化对应着人的发展的畸形、片面；到了共产主义社会，自由劳动将对应着人的自由全面发展。

The security of PKI system itself is especially emphasized during the system design and implementation process, which is in accordance with the pervasive characteristic of PKI. Second, the concept of a Trusted Key Management Center is introduced for the first time. This technology greatly strengthens key management practices and allows for smooth transition from PKI to Key Management Infrastructure. Third, certificate status mechanisms are investigated in depth, and a certificate revocation performance simulation system is devised. All these work will provide guides to practice and employment of PKI applications. Based on time constraints, a new taxonomy for authenticated dictionaries is proposed. Fourth, formal analysis ofOCSP protocol is carried out; then an efficient and scalable OCSP system is developed. Fifth, the special requirements caused by the working environments of Wireless PKI are analyzed. Based on communicative hashing and dynamic Merkle hash tree, an efficient certificate status validation method suitable for WPKI is presented. Sixth, one important kind of fair exchange protocols is studied, and a new CEMBS based on RSA cryptosystem is proposed. Afterwards, a novel fair exchange protocol totally based on RSA signature scheme is devised.

在系统设计和实现的过程中，考虑到PKI作为普适性安全基础平台的特点，特别强调PKI系统自身的安全性；第二，首次在PKI系统的设计中提出了"可信密钥管理中心"的概念，这一独特设计大大地强化了密钥管理功能的实施，为PKI向密钥管理基础设施的平滑过渡提供了良好的技术准备；第三，对证书状态验证机制进行了深入研究，设计了证书状态模拟系统，以指导PKI系统和应用的部署和实施；在此基础上，基于时间约束首次给出了认证字典的一种新的分类方法；第四，对OCSP协议进行了形式化分析，设计和实现了一种高效、可扩展的OCSP系统；第五，分析了WPKI工作环境对设计安全基础平台提出的特殊要求，结合无线移动设备的具体特点，基于可交换杂凑函数和动态Merkle杂凑树设计出了一种适用于WPKI环境的高效证书状态查询机制；第六，对一类公平交换协议进行了深入的研究，从设计公平交换协议的密码基础结构出发，提出了一种新型的基于RSA密码体制的高效CEMBS；在此工作的基础上，设计了一种基于RSA密码体制的最优化公平交换协议。

The security of PKI system itself is especially emphasized during the system design and implementation process, which is in accordance with the pervasive characteristic of PKI. Second, the concept of a Trusted Key Management Center is introduced for the first time. This technology greatly strengthens key management practices and allows for smooth transition from PKI to Key Management Infrastructure . Third, certificate status mechanisms are investigated in depth, and a certificate revocation performance simulation system is devised. All these work will provide guides to practice and employment of PKI applications. Based on time constraints, a new taxonomy for authenticated dictionaries is proposed. Fourth, formal analysis of OCSP protocol is carried out; then an efficient and scalable OCSP system is developed. Fifth, the special requirements caused by the working environments of Wireless PKI are analyzed. Based on communicative hashing and dynamic Merkle hash tree, an efficient certificate status validation method suitable for WPKI is presented. Sixth, one important kind of fair exchange protocols is studied, and a new CEMBS based on RSA cryptosystem is proposed. Afterwards, a novel fair exchange protocol totally based on RSA signature scheme is devised.

在系统设计和实现的过程中，考虑到PKI作为普适性安全基础平台的特点，特别强调PKI系统自身的安全性；第二，首次在PKI系统的设计中提出了"可信密钥管理中心"的概念，这一独特设计大大地强化了密钥管理功能的实施，为PKI向密钥管理基础设施的平滑过渡提供了良好的技术准备；第三，对证书状态验证机制进行了深入研究，设计了证书状态模拟系统，以指导PKI系统和应用的部署和实施；在此基础上，基于时间约束首次给出了认证字典的一种新的分类方法；第四，对OCSP协议进行了形式化分析，设计和实现了一种高效、可扩展的OCSP系统；第五，分析了WPKI工作环境对设计安全基础平台提出的特殊要求，结合无线移动设备的具体特点，基于可交换杂凑函数和动态Merkle杂凑树设计出了一种适用于WPKI环境的高效证书状态查询机制；第六，对一类公平交换协议进行了深入的研究，从设计公平交换协议的密码基础结构出发，提出了一种新型的基于RSA密码体制的高效CEMBS；在此工作的基础上，设计了一种基于RSA密码体制的最优化公平交换协议。

Our company is a specialty deditcated truck manufactures,our company has own expot right ,and our water sprinkler ,road sweeper sewage suction truck,high-altitude truck ,aerial truck and vans are export to foreign countries ,and our dump trucks also have a large number of foriengn market.which dose not means that business would have been so good to do you .we are still faced with severs knock,The world is such that you never rest on its laurel,in this world you are not progress ,that means it is a biggest step backword,you may bot be saring by leaps and bounds.but you must be persistent sffers,even small steps to move,as long as you are moving ,you have hope,as long as you still has not been extinguished,you have the right to breed,this is the reality in this world.i have gone through the kind of look at the age of fairy tales,and i have already through the kind of the passion for survival alone love,aithough i still have in mind dream,the splendor of breathtaking beauty of dream,but i know that is the real dream that is close our eyes at night,and i know whick is my future that i must begging for it..

我所在的公司是个特种专用卡车制造厂家，自己有自行出口权，我们的环卫洒水车，环卫扫路车，环卫吸污车，环卫高空清洗车，高空作业车，厢式车都是远销国外的优良产品，同时我们的自卸车也在国外占据着大量市场，这并不代表生意就这么好做哟，我们仍然面临这剧烈的淘汰赛，这个世界就是这样，你永远不可以坐吃山空，在这个世界中，不进步就是最大的退步，你可以不是突飞猛进的高升，但是你一定要坚持不懈的努力，哪怕是一小步一小步的移动，只要你还在动，你就有希望，只要你还没有泯灭，你就有权利滋生，这就是现实中的世界，我早已经过了那种看童话故事傻笑的年龄了，我也早已经过了那种只靠激情度日的年华，我虽然心中仍然有梦，美的让人窒息的绚丽的梦，但是我现在却知道那只是真正的梦，是我只能在夜里闭着眼睛才可以实现的梦，那些我应该在阳光下昂起头来努力实现的才叫做未来。

The paper analyze it from these aspects: Firstly, in the communism, when the survival necessity and feast necessity are satisfied enough, the self-fulfillment necessity will become the most important necessity in people's life. The freedom labour is in the course of self-fulfilling. Secondly, the"truth""good"are united in the labour , which make it possess the nature of beauty. Thirdly, in the game, people disremember the outside bondage and enjoy the happiness and freedom. Compared with the game, the freedom labour has many same characters and is more fascinating. Finally, the labour and the people's development have many affinities: In primeval, the autonomic labour was corresponded with the people's"primordial enrichment". In private owned society, alienation labour was corresponed with the people's macrocephalic development. In the communism, the freedom labour will corresponded with the all-powerful development. The development of human history incline to the trend that history makes everyone develop all-powerfully, the freedom labor will be the final choice.

真正自由劳动所具有的特质，将使其成为人们生活的第一需要：(1)从需求的层次性看，在未来社会，当生存的需要和享受的需要得到满足之后，自我实现的需要将成为人们生活中最重要的需求，而真正自由的劳动就是自我实现的过程；(2)真正自由的劳动在于真、善在劳动中的统一，使得劳动具有美的性质；(3)在游戏中，人们忘却了外在的束缚，得到快乐和自由的体验；较之游戏，真正自由劳动具有诸多相同的性质，将更加引人入胜；(4)劳动和人的发展有着密切的关系：原始时代的自主劳动对应着人的发展的&原始的丰富&；私有制时期，劳动的异化对应着人的发展的畸形、片面；到了共产主义社会，自由劳动将对应着人的自由全面发展。

In this paper Ⅰ successfully applied these methods to fault diagnosis, and presenting some new innovative machinery fault diagnosis method; First Ⅰ present a new gear wornout fault diagnosis method, this method use the vibration signal's time-frequency attribute and instantaneous phase undulation to accurately detect gear's fault, and by comparing with the traditional frequency domain analysis method, this method reveals that many nonlinear and nonstationary characteristic exist in gear's vibration, this tell us that if we use frequency domain analysis method without pay attention to the signal's characteristic, we could get wrong diagnostic result; Then Ⅰ present a new bearing fault diagnosis method, this method use ATVFD and Hilbert transform to do envelop demodulation,Ⅰ analyze the envelop with time-frequency method and find out that this method is more accurate then traditional method.Ⅰ also explain that the modulation of the fault to the carrier wave may also be non-stationary and nonlinear; Finally Ⅰ present a cylinder pressure measurement method of diesel engine by means of vibration, cylinder pressure is an important parameter of diesel engine fault diagnosis, the pressure measuring is simplified a lot by this method,Ⅰ also use the ATVFD and time-frequency analysis to realize it.

本文中将上述理论方法成功地应用到故障诊断中去，提出了几点创新性的诊断方法；提出了一种齿轮磨损故障诊断的新方法，该方法利用振动信号能量的时频域分布特征与瞬时相位波动特征可以进行精确的齿轮故障诊断，并通过与传统的频域诊断方法的比较，揭示出齿轮振动中存在的明显的非线性与非平稳特征，说明了不加选择地利用频域分析方法进行齿轮故障诊断很可能会得到错误的诊断结果；提出了一种轴承故障诊断的新方法，该方法利用ATVFD分解与Hilbert变换进行包络解调，并对解调得到的包络信号进行时频域分析，可以实现更加准确轴承故障诊断，说明了故障对载波信号的调制往往也是非平稳与非线性的；提出了一种利用振动信号进行柴油机汽缸内压力检测的新方法，柴油机汽缸压力的变化是柴油机故障诊断的重要参数，利用振动方法可大大简化汽缸压力的检测过程，该方法也是综合利用ATVFD分解与时频域分析方法实现的。

Only with such characteristics, the movement equations can be expressed as matrices, and the idea of transforming the movement equations to the simplest form through a nonlinear transformation can be realized;(2) The form of Zi =Yi + YTH2i Y + Y7H3i Y(2)+ Y(2)T H4i Y(2)+ YTH5i Y(3) is adhibited in the nonlinear transformation, so that the multivalued problem caused by the nonlinear transformation is avoided, and the higher order transformation can be taken next;(3) The fourth order nonlinear transformation matrices H21,H31,H41 and H51 are derived, by which the original movement equations of electric power system is transformed to Jodan form in Z space;(4) By use of the fourth order nonlinear transformation, the approximate expression of the stability boundary is obtained, in Z space it is Z1= 0,in Y space it is Y1 + YTH21 Y + YTH31 Y(2)-i- Y(2) TH41 Y(2)+YTH51 Y(3)= 0;(5) The criterion used in this paper to judge whether the system critical unstable is simple and quick;(6) The method used in this paper is a direct method, and no need to construct an energy function.

正是由 于电力系统的运动方程具有这样的特性，才能写成矩阵的形式，通过非线性变换将电力系统的运动方程变换为最简单的线性形式的思想才能得以实现；（2）将通常运用于电力系统暂态稳定性分析的Normal Form变换的形式由 Yi＝ Zi＋ ZTh2riZ变形为 Zi＝ Yi＋YTH2iY＋YTH3iY（2）＋Y（2）TH4iY（2）＋YTH5iY（3），从而使得在对持续故障轨线实施同样的非线性变换以确定临界切除时间时，避免了非线性变换带来的多值性的问题，而只有在没有多值性问题的困扰下，才能采用较高阶的变换：（3）推导出了将原始电力系统系统的运动方程变换到Z空间的约当形式的非线性变换矩阵H21、H31、H41、HS1：（4）在运用四阶了「线性变换的情况下，给出了受扰动后系统的稳定边界的近似的解析表达，在Z空间为Z1=0，在y空间为： Y1+YTH21Y+YTH31Y(2)+Y(2)TH41Y(2)+YTH51Y(3)=0 （5）确定临界失稳的判据简单、快捷：对于一个复杂的电力系统，其稳定边界是相当复杂的一个高维曲面，即便是已知系统稳定边界的解析表达，要求出系统持续故障轨线何时与这一高维曲面相交，在数学上几乎是不可能实现的。

The treating plant mainly has the following input signal in this set of control system: Che Neinei was mad that outside the temperature signal, the vehicle the external Qi temperature signal, the water temperature temperature signal, the air blower feedback signal, the mix air throttle feedback signal, the back light lamp signal and so on, the output device is the VFD fluorescence vacuum display monitor, the control device is mainly on control panel''s pressed key, realizes the plan acts according to the vehicle speed, Each temperature value''s situation comes the intelligent control air-conditioning system various air throttles electrical machinery and compressor''s work, causes in compartment''s temperature basis hypothesis temperature in the physical sensation comfortable scope, simultaneously controls the blowing through the air throttle electrical machinery''s movement the direction, the cold hot blast proportion, the automatic control, forces to defrost, the inside and outside circulates the wind transformation and the breakdown situation demonstration is the concrete function which this set of control system can realize.

在这套控制系统中处理装置主要有以下输入信号：车内内气温度信号、车外外气温度信号、水温温度信号、风机反馈信号、混合风门反馈信号、背光灯信号等，输出装置为VFD荧光真空显示屏，控制装置主要是控制面板上的按键，实现的方案是根据车速，各个温度值的情况来智能控制空调系统各风门电机和压缩机的工作，使得车厢内的温度根据设定温度在人体感觉舒适的范围之内，同时通过风门电机的动作来控制吹风的方向、冷热风的比例，自动控制，强制除霜，内外循环风的转换和故障情况的显示都是这套控制系统所能够实现的具体功能。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。