A numerical approach is often employed for understanding optical transmission process in fibers , for the reason that the equation modeling optical propagation in fibers is a nonlinear partial differential equation ( sometimes is called nonlinear schrodinger equation ) , which cannot generally be given analytical solutions 就单一的光脉冲而言，其时间范围可以为无限，而在计算过程中我们只能就其中起主要作用的一段时间范围进行模拟，这一时间范围定义为时间窗口t _ w 。
During the past ten years , though the research on social security issue had made a great progress , the study on rural social security issue of china is comparatively weak for the reason that the focal point has been placed on cities and towns , as for the historical inspection of china ’ s rural social security system structure and changes from the visual angle of economic history rarely seen 十多年来,虽然关于社会保障问题的研究取得了重大进展,但是由于把重点放在了城镇,因此,对我国农村社会保障问题的研究较为薄弱,至于从经济史学的视角,或者说从我国市场化、工业化和现代化背景下,对我国农村社会保障制度结构与变迁进行历史的考察则更为鲜见。
Chapter 5 makes a converse - project analysis of a lcos chip which from a hmd product , for the reason that we can not get the chips ’ pin definition , the sequential and the electric properties documents . after measurement by oscillograph , then combined with the works above , we got the pin definition and the basic sequential properties 通过示波器的测定及读数统计,再结合上一章的算法、时序计算结果和第二章对lcos技术的理解,得出了该芯片20个引脚的功能对应关系和基本时序特性。
Abstract : in this paper , the variable structure neural netw ork is proposed for the reason that the network structure and performance there are universality not optimum . we have studied that the variable structure neural network for single hidden layer and multi - hidden layer . the simulation experiment results demonstrate that the variable structure neural networks are effective 文摘:针对神经网络结构、性能不佳的普通状况，本文提出变结构的神经网络.先后研究了神经网络单隐层和多隐层的变化情况.仿真试验结果证明是有效的
The systems of administrative separation decide the scope of administrative subject . administrative subject takes on the tendency of diversity , for the reason that public affairs of administrative subject develop from public power to public services . whether the subject of action can ' become the defendant in administrative litigation is no 而行为主体能否成为行政诉讼被告，并不以其是否是行政主体的身份来判断，这宣示了行政主体与行政诉讼被告之间并无直中国政法大学博士学位论文行政诉讼当事人研究接、必然的联系，这对于解决行政诉讼被告问题的痛疾，具有重要意义。
Traditional marketing always concerns how to do with the external relationship such as between company and its customers . however , for the reason that it is the staff who supply the product directly to customers , how to make the staff satisfied and afford high - quality service appears critical . as to the study of internal marketing in hotel , there are some positive results spreading all kinds of magazines , but they are not systematical and integral 传统意义上的营销只停留在研究企业和企业外部关系的处理,对企业内部人员的营销并未引起充分的重视,随着服务营销理论的发展,以及服务产品不可感知性、不可分离性、差异性等一系列特性,尤其在服务行业,人们越来越多得关注起企业的内部,尤其是企业内部的员工,认为员工是服务产品的提供者,他们表现得好坏直接影响到服务产品的优劣。
The legal system , which regulates the bank ’ s right of set - off , as an essential and important system , has not been set up efficiently and perfectly . for the reason that , the balance of rights between the bank and the customer is the intention and the starting point of the system , the research from the angle of the balance will be of great practical and theoretical value 银行抵销权制度作为一项重要的法律制度在我国尚未完全建立,而银行与客户权利平衡是该制度之合理建构的出发点和最终目标,因此以银行与客户权利平衡为透视点研究银行抵销权制度颇具理论和实践意义。
For the reason that this method use the arrangement of characteristic light spot directly to avoid the aberrance that come out during calculating in traditional method , it can improve the estimation precision of position and attitude . besides , it provides a certain degree of redundancy to the visual navigation system 由于该算法直接利用特征光点的几何配置条件,避免了传统算法在计算过程中出现畸变的问题,从而提高了位置和姿态角估值的精度,并使月球车的视觉导航系统具有一定的冗余性。
Synthetic aperture radar ( sar ) has been widely used in both military affairs and civilian fields because of its high - resolution , independence of both time and weather conditions , etc . usually , sar could only be used to detect and image static targets instead of moving targets for the reason that the position drifting will make local mistake in the general sar image , which is usually caused by the velocity of the moving targets in the ground range direction , and when it comes to the target with strong scatter coefficient right in the drifting position , the moving target could not be detected at all 合成孔径雷达( sar )由于其高分辨率、全天时、全天候等优良性能,已经在军事和民用领域得到越来越广泛的应用。通常,合成孔径雷达只能对静止目标进行检测和成像,动目标由于其径向速度而在常规sar图像中有一个位置偏移,使成像造成局部错误,而且当偏移处有强散射目标时,动目标将无法检测。军事上的应用也要求合成孔径雷达能对运动目标进行有效地检测和成像,因而运动目标检测( mti )及其成像日益成为合成孔径雷达领域研究的一个热点。
For the reason that the defrost methods of ashp can not satisfied the need of owners , a novel adaptive defrost method is brought forward , which is grounded on the modern modeling techniques and the change rate of tube - fine temperatures . the method integrates the surrounding conditions and the response of the ashp during operation 针对目前空气源热泵机组除霜过程中存在的问题，提出了一种基于现代仿真技术和管翅片温度变化率为基础的自适用控制技术，并探讨了这种技术的如何实现问题，为实现真正的按需除霜提供了理论上的依据。
