新闻标题中的工具成分

论文立足于汉语标题语境,考察了汉语新闻标题中的工具成分,认为工具成分可以做主语而不是"工具施事化,"施事隐含与工具凸显体现了反比例关系,各语义范畴之间有一定的相似性,会发生转化。     

车用功率分流无级变速驱动系统特性分析

以车用功率分流无级变速驱动系统为研究对象,在对差动轮系、金属带式无级变速器、离合器单元的建模以及整车受力分析的基础上,结合离合器工作过程的三个阶段,建立了以无级变速功率分流传动单元为核心的驱动系统的动力学模型,并对其瞬态响应进行了运动和动力分析及仿真。仿真结果表明,在起步阶段,装备有功率分流无级变速驱动系统的车辆具有较好的加速性能,且离合器接合过程中驱动系统无级变速功率分流传动单元(不包含离合器)的转速与加速度的变化滞后小,系统稳定性好。     

量子态转化的一些数学性质

目的为研究混合量子态MLOCC和ELOCC的最大催化转化概率在一定条件下的数学性质。方法利用tensor积和量子纠缠态的有关性质。结果得出了几个关于MLOCC和ELOCC纠缠转化的定理。结论可以对量子纠缠态的转化问题作进一步的数学研究来加深对量子纠缠转化的物理理解。     

基于小波变换的期权市场中的时间价值序列预测

目的试探利用小波变换研究预测期权市场中时间价值序列。方法提出了基于小波变换的期权市场中的时间价值序列预测方法。结果实际分析表明所设计的预测方法是有效的。结论它同传统的预测方法相比较具有较高的可靠性,且有很好的应用前景。     

资源型城市产业转型风险动态评估的贝叶斯模型研究

在资源型城市产业转型前准确地对资源型产业体系进行评估,已成为资源型城市产业转型前期工作的关键所在。分析了资源型城市产业转型在产业、市场、战略、管理、人力资源、法律政策等各方面存在的不确定性,建立了资源型城市产业转型风险动态评估的贝叶斯模型,不仅能够评估资源型城市转型的总体风险,还可以分别评估各个产业可能引起风险的程度,为资源型城市产业转型风险评估提供了客观依据。     

Blurred Defocused Image Restoration Based on FRFT

A technique for restoring the blurred image resulted from defocusing of the lens is proposed in this paper, which is based on fractional Fourier transform （FRFT）.The FRFT, as a powerful tool for the analysis of time-varying signals, is closely connected with the optical imaging system. FRFT also can describe optical imaging process just like Fresnel diffractions, so a defocused imaging model based on FRFT is established to explain the blur phenomena of defocusing image. The defocused imaging model is greatly different from the traditional point spread function （PSF） model, and enables to uncover the blur nature of non-focus image. Then, an image restoration method using the novel model is proposed to handle the blurred defocused image. The method adopted a new iterative phase retrieval approach which can approximately estimate phase signals from intensity signals of a single defocused image by means of FRFT. Restoring image may acquire sharp image by implementing inverse FRFT on complex image signal made from the estimated phase signals and intensity signals. Experimental results demonstrate that the method is effective in restoring blurred defocused image.     

Fuzzy Economic Order Quantity Inventory Models Without Backordering

In economic order quantity models without backordering, both the stock cost of each unit quantity and the order cost of each cycle are characterized as independent fuzzy variables rather than fuzzy numbers as in previous studies. Based on an expected value criterion or a credibility criterion, a fuzzy expected value model and a fuzzy dependent chance programming (DCP) model are constructed. The purpose of the fuzzy expected value model is to find the optimal order quantity such that the fuzzy expected value of the total cost is minimal. The fuzzy DCP model is used to find the optimal order quantity for maximizing the credibility of an event such that the total cost in the planning periods does not exceed a certain budget level. Fuzzy simulations are designed to calculate the expected value of the fuzzy objective function and the credibility of each fuzzy event. A particle swarm optimization (PSO) algorithm based on a fuzzy simulation is designed, by integrating the fuzzy simulation and the PSO algorithm. Finally, a numerical example is given to illustrate the feasibility and validity of the proposed algorithm.     

Wick类型随机广义Kdv MKdv方程的精确解

通过埃尔米特变换将Wick类型的随机广义Kdv MKdv方程变成广义系数Kdv MKdv方程, 利用截断展开法求出广义系数Kdv MKdv方程的精确解, 并通过埃尔米特逆变换得到了随机广义Kdv MKdv方程的精确解.     

Efficient Fault Tree Analysis of Complex Fault Tolerant Multiple-Phased Systems

Fault tolerant multiple phased systems (FTMPS), i.e., systems whose critical components are independently replicated and whose operational life can be partitioned in a set of disjoint periods, are called "phases". Because of their deployment in critical applications, their reliability analysis is a task of primary relevance to validate the designs. Fault tree analysis based on binary decision diagram (BDD) is one of the most commonly used techniques for FTMPS reliability analysis. To utilize the technique the fault tree structure of FTMPS needs to be converted into the corresponding BDD format. Our research work shows that the system BDD generation algorithms presented in the literature are too inefficient to be used for industrial complex FTPMS because of the problems, such as variable ordering and combination of large BDDs. This paper presents a more efficient approach consisting of a flatting pre-processing technique, a proved efficient ordering heuristic and a bottom-up generation algorithm. The approach tries to combine share-variable BDDs by complex combination operation firstly and then combine no-share-variable BDDs using simple combination operation, thus to alvoid the intensive computations caused by large BDD combination operations. An example FTMPS is analyzed to illustrate the advantages of our approach.     

灵芝与中药共发酵产物的药理学初步研究

为考察灵芝培养基在添加不同中药后，其发酵液药理作用的变化，选择小鼠负重游泳实验，戊巴比妥钠睡眠时间试验，小鼠断头后致急性脑缺氧试验，以及对S180荷瘤小鼠瘤重的影响，研究在灵芝培养基中添加不同中药后其发酵液的抗疲劳、改善睡眠、耐缺氧与抑制肿瘤作用，并研究了这几味中药对灵芝生长的影响.结果发现在灵芝培养基中添加黄芪、姜黄、补骨脂、红毛五加后，其发酵液能明显延长小鼠负重游泳时间；在培养基中添加黄芪、红毛五加的发酵液对小鼠急性脑缺血性缺氧具有较好的保护作用；在培养基中添加巴戟天后，其发酵液灌胃的小鼠，瘤重减轻.表明在灵芝培养基中添加中药后，会改变灵芝发酵液的药理作用.