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That shows us to be in will study Baidu is participial algorithm, carry development of a few years, it is quite mature that the participial algorithm of Baidu has been been, this among them little also not the contribution of SEOER, the elder that has a SEOER has said: Yu magpie is サ of horsefly of Zhui ㄓ bits to flinch ? of lax Congyong model surnames ? of clear of ヅ of earnest of ? clam the She nationality americium of ? of clear of ヅ of earnest of the She nationality of clam of ? of ? of clear of ヅ of earnest of the She nationality of acute hearing clam reads fat of evade of Tuan of ?

那现我们在来研究一下百度是分词算法,通过几年的发展,百度的分词算法已经算是相当成熟了,这其中也少不了SEOER 的功劳,有一位SEOER的前辈说过:百度的算法有简单的有复杂的,有正向最大匹配,反向最大匹配,双向最大匹配,语言模型方法,最短路径算法等等,有爱好的可以用GOOGLE去搜索一下以增加理解。

Presently, though there are many calculating model of anchor-bolt and many research results concerning these problems,there exist some problems on these methods in simulating the anchor bolt's mechanical behavior.

目前,虽然已有不少的锚杆计算模型及相应的计算方法,但这些方法在对锚杆力学行为的模拟及应用等方面,尚存在着一些问题。

The main work and the originality points of this dissertation could be concluded as the following parts:(1) To analyze systematically the mathematical model of LES of air flow in great space, under the case of isothermal and non-isothermal, as well as the combined action of buoyancy and strain. Some basic problems are studied about the LES application into airflow simulation of great space, such as boundary conditions, spatial difference scheme and time advancing scheme, time step etc., which creates the basis for the LES application to indoor airflow simulation.(2) Both the instantaneous and time averaged flow field of great space with multiple jets under isothermal and non-isothermal cases are explored with large eddy simulation method, and also discussed the dynamic characteristics and the law of fluidflow in the great space.(3) Based on the results of LES of the great space and the Fanger thermal comfort indexes, it is brought forward the concept of the series of dynamic thermal comfort evaluating indexes, which could be divided into thermal comfort index with time averaged properties PD, PPD, PMV, thermal comfort index with instantaneous properties IPD, IPPD, IPMV, and time averaged thermal comfort indexes TAPD, TAPPD, TAPMV, and transient situations time averaged thermal comfort indexes TTAPD, TTAPPD, TTAPMV. The differences among them and the calculation methods are discussed, and the four kinds of indexes are calculated with the thermal comfort index PD as an example.(4) Based on the LES results it is discussed the hot air stratification phenomena in air-conditioned buildings in the case with air supply and return registers on the ceiling and the case on the sidewall. The fundamentals of the hot air stratification are studied and the relations of estimating hot air stratification are brought forward.(5) With the advanced apparatus such as hot wire film anemometer IFA300 and laser particle field anemoscope, corresponding model test and site measurements have been done, which are compared with the simulation results and LES is proved a very promising method in air flow simulation indoor.

本文主要工作既创新点体现在以下几个方面:(1)系统分析了等温、非等温和考虑剪切力与浮升力综合作用的高大空间大涡模拟数学模型,并研究了高大空间大涡模拟在室内气流仿真应用中的一些基本问题,如边界条件、空间离散格式和时间推进格式、时间步长选择等问题,为大涡模拟在室内气流计算中的广泛应用打下了基础;(2)首次用大涡模拟方法研究了高雷诺数下高大空间多射流在等温、非等温情况下的瞬时流场和时均流场分布,并探讨了多射流流场的动态特性和流动规律;(3)基于大涡模拟的动态仿真结果和Fanger的热舒适指标,首次系统地提出了动态热舒适评价指标体系的概念:即基于时间平均参数的热舒适指标PD、PPD、PMV;基于瞬时参数的瞬时热指标IPD、IPPD、IPMV;基于时间平均热舒适指标TAPD、TAPPD、TAPMV;以及沿行动迹线的时间平均热舒适指标TTAPD、TTAPPD、TTAPMV,并分析了四类热舒适指标的差异性和计算方法,还以PD值为例对四类指标分别进行了计算;(4)基于数十种工况下空调房间大涡模拟的结果,研究了空调建筑上送上回和侧送侧回两种情况下热分层现象,并探讨了热分层的基本规律,首次提出了避免热分层现象的判断公式;(5)在暖通空调领域,首次使用IFA300热线风速仪、激光粒子速度场仪等先进设备,完成了与大涡模拟相对应的模型试验,并把实测结果与仿真结果进行了对比,说明LES在室内气流仿真方面是一种很有前景的方法。

In chapter 3, the paper proposed a new kind of preference relation, i.e. distance preference relation; followed this, a scale was introduced for constructing antisymmetric matrix, and consistency of the matrix was defined, three methods for computing priority vector were studied; At the end, two examples were used to demonstrate the application of the new method,and they showed that the introduction of antisymmetric matrix to AHP is effective and valuable.

本文首先对Saaty AHP的几种常见标度进行了比较分析,然后对正互反判断矩阵及模糊互补判断矩阵的权重计算方法进行了归纳和总结;最后,本文提出了一种新的偏好关系,即基于"差"的偏好关系,从而将反对称矩阵引入层次分析法,接着对新型偏好关系下判断矩阵的构造、一致性的定义与性质以及权重的计算方法做了初步的研究,最后用算例说明了新方法的应用,并做了相应的比较分析,结果表明采用基于"差"的偏好关系构造反对称矩阵拓展了AHP的应用范围,有一定的理论和应用价值。

The study has focused on: 1 The research background and the current state of the power measurement were analyzed systematically, and then wavelet-based power measurement algorithm was certified feasible for astable signals; 2 We developed a new method of RMS and power measurement based on Dmeyer wavelet. After that three other wavelet measurement approaches were compared with Dmeyer wavelet-based measurement approach. Then the impact on measurement errors of amplitude frequency property and energy leakage of wavelet filter banks were deeply researched, and some measures were proposed to reduce it; 3 We developed a new strategy of power measurement algorithm based on lifting wavelet, which had calculation advantage compared with the first wavelet, so that it was more suitable for the realization of hardware; 4 The running system of wavelet-based power measurement algorithm based on DSP was proposed, and then it was realized on ICETEK-VC5416-A EVM board; 5 Existing problems and the further research direction of wavelet-based power sub-band measurement algorithm was discussed.

本文对基于小波变换的功率测量算法展开深入的分析研究,主要内容有:1)系统地分析了功率分解测量的研究背景、国内外的研究现状,并从能量守恒的角度验证了小波功率分频带测量算法在非平稳信号条件下的可行性;2)首次提出了Dmeyer小波变换有效值与功率的测量方法,进而通过对该方法与3种已经提出的小波测量方法的对比分析,深入研究了小波滤波器组的幅频特性和能量泄漏特性对测量误差的影响,并针对电网谐波的特点提出了减小影响的相关措施;3)首次提出了二代小波功率测量算法,对比一代小波功率分频带测量算法,它大大减少了算法实现的运算量及内存的需求量,从而更适合于硬件的实时实现;4)提出了小波功率分频带测量算法的DSP实现方案,并在ICETEK-VC5416-A EVM板上进行了实现;5)探讨了小波功率分频带测量算法目前仍存在的问题,并提出了进一步的研究方向。

Based on the retrieval and analysis of the Bibliographer, the methods of water-disitillation extraction, sametime-disitillation extraction and supercritical CO_2 extraction for the extraction of three typical kinds of natural substances in Zhejiang Province were evaluated exp...

论文在文献阅译和工艺原理分析的基础上,以浙江比较有特色的三种天然物质为研究对象,实验评估了水蒸气蒸馏、同时蒸馏萃取和CO_2超临界萃取等方法,研究了金柑挥发油、白玉兰花挥发油和香菇精等三种天然香精的不同提取工艺,重点研究了CO_2超临界萃取工艺与成份分析方法。

Based on the retrieval and analysis of the Bibliographer, the methods of water-disitillation extraction, sametime-disitillation extraction and supercritical CO_2 extraction for the extraction of three typical kinds of natural substances in Zhejiang Province were evaluated experimentally.

论文在文献阅译和工艺原理分析的基础上,以浙江比较有特色的三种天然物质为研究对象,实验评估了水蒸气蒸馏、同时蒸馏萃取和CO_2超临界萃取等方法,研究了金柑挥发油、白玉兰花挥发油和香菇精等三种天然香精的不同提取工艺,重点研究了CO_2超临界萃取工艺与成份分析方法。

The algorithm GS to solve the problem of inverse dynamics based on the optimal theory is proposed, by using the numerical methods of Gill and shooting target, the optimal joint driven torques are obtained With the smooth joint trajectory motion, a fast and stable inverse dynamics method is proposed, it provides a new effective way to control the flexible manipulator The trajectory planning in the joint space and Cartesian coordinates is especially discussed In terms of kinematics of space flexible link manipulators, a sequential integration method for inverse dynamic analysis of flexible manipulators is developed The concrete results of simulations tested and verified the validity of proposed methods, and some valuable conclusions are achieved.

提出了求解基于最优理论的柔性臂逆动力学问题的GS法(Gill—Shooting method),得到了柔性臂关节的最优驱动力矩;提出了基于光滑关节运动轨迹的柔性臂逆动力学的快速稳定方法,为柔性臂控制提供了一条新的途径;探讨了关节空间和直角坐标空间柔性臂的轨迹规划问题;研究并完善了结合柔性臂运动学的顺序积分的逆动力学方法。通过具体实例的仿真研究,验证了所提出的柔性臂逆动力学方法的有效性,得出了一些很有价值的结论。

Pulse fast thermal neutron analysis technologyis a better method than chemical analysis used in coal industry.

应用脉冲快热中子分析技术代替煤炭行业原来使用的化学分析方法,不但节约成本,而且经过努力可以实现在线分析,是一种非常有前途的分析方法,然而因HPGe探头进口价格昂贵且不易维护,而不适合中国使用。

It analyzes the propagation characteristic of the UHF signal in GIS using the experimental method and XFDTD emulation method.

UHF方法是目前公认的监测GIS最有效和最有前途的方法。

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