用图解解析法进行运动平面三个有限近位置的机构综合

本文用图解解析方法．建立了极点、镜像点和等角反向规律的数学模型；解决了运动平面三个有限接近位置机构综合的计算机辅助设计问题，并附有计算程序框图和工程设计实例．     

MetaOJ: A Massive Distributed Online Judge System

Online Judge(OJ) systems are a basic and important component of computer education. Here, we present MetaOJ, an OJ system that can be used for holding massive programming tests online. MetaOJ is designed to create a distributed, fault-tolerant, and easy-to-scale OJ system from an existing ordinary OJ system by adding several interfaces into it and creating multiple instances of it. Our case on modifying the TUOJ system shows that the modification adds no more than 3% lines of code and the performance loss on a single OJ instance is no more than 12%. We also introduce mechanisms to integrate the system with cloud infrastructure to automate the deployment process. MetaOJ provides a solution for those OJ systems that are designed for a specific programming contest and are now facing performance bottlenecks.     

脉冲多普勒雷达频域跳盲与频域解模糊

针对脉冲多普勒雷达中的速度遮挡问题 ,提出了基于频域跳盲的PRF组合选择准则及其跳盲方法 ;针对脉冲多普勒雷达中的速度模糊 ,提出了一种用于解速度模糊的查表法 ,即通过预先存储固定表值 ,将获取的视在目标频率处理后在表中查找 ,从而得到实际目标频率。频域查表法实时性强 ,适于频域解模糊     

Models of Choosing the Financial Compensation Strategy for Flight Delay

At present, most airlines adopted generally the same amount of compensa- tion strategy when needing to provide financial compensation to all flight delay passengers. However, due to the existence of differences in travel time value, ticket fare, as well as the expectation of compensation for flight delays, the gap between the effect of same amount of compensation and many passengers＇ （especially the high-value ones） expectations is large, it results in that airlines need to pay higher cost of compensation, but the total effect of compensation for passengers are not better. This paper advanced four financial com- pensation strategies for flight delays, summarized their own characteristics, and took into account the interests of both airlines and passengers, built the optimization models of the four financial compensation strategies under the restriction of the airline＇s compensation cost and on the goal of the maximum total effectiveness of the financial compensation to all passengers. Finally, based on the specific circumstances of the flight delays, the paper discussed the method for airline to choose the optimal financial compensation strategy through solving four models and comparing the compensation effectiveness.     

Creating Action Research Quality in Organization Development: Rigorous,Reflective and Relevant

The purpose of the paper is to present a framework that enables action researchers to create quality action research projects within the organization development (OD) domain using the broad criteria of being rigorous, reflective and relevant and so contribute to the realm of practical knowing. What constitutes good quality action research within OD is a difficult question, given the broad range of approaches that operates in a wide variety of settings and with great diversity. It advances specific dimensions by which action researchers can create, review and assess quality in action research work. This integrative framework and criteria are practical tools to enable action researchers to create quality action research in OD.     

基于ADAMS/ATV的履带装甲车辆托带轮分布方案优选

履带装甲车辆的履带与托带轮的垂向冲击是产生冲击噪音和导致履带疲劳与断裂的重要因素。基于ADAMS软件中的ATV模块对某型履带装甲车辆建立了动力学模型，针对各托带轮所受履带的垂向冲击力大小不均匀的问题，综合动力学仿真分析，优选托带轮的分布方式，改善其动力学性能。     

一种多路聚合型CICOQ交换结构

提出了一种多路聚合型联合输入/交叉节点/输出排队(CICOQ)交换结构,并从理论上证明了当聚合路数等于2时,多路聚合型CICOQ交换结构无需加速即可通过分布式调度算法实现模拟采用任意调度算法的输出排队交换结构。最后从实现的角度给出了多路聚合型CICOQ交换结构的工程设计方案,并通过仿真对该方案的性能进行了验证。     

4-(3,5-二氯-2-羟基苯)二氮烯基金属酞菁的合成及性质

以4-硝基邻苯二腈与2,4-二氯苯酚为原料,经还原、重氮化、偶合合成了4-(3,5-二氯-2-羟基苯)二氮烯基邻苯二腈,然后与尿素、钼酸铵和金属盐在熔融状态下合成了三种4-(3,5-二氯-2-羟基苯)二氮烯基取代的金属酞菁.用IR,UV-vis光谱对产物进行测定和表征,对比了三种化合物吸收光谱.结果表明,4-(3,5-二氯-2-羟基苯)二氮烯基金属酞菁与无取代酞菁相比,Q带最大吸收波长发生不同程度的红移,且红移大小顺序为镍酞菁、钴酞菁、铜酞菁.     

Human peripheral blood monuclear cells transfected with messenger RNA stimulate antigen-specific cytotoxic T-lymphocytes in vitro

The efficiency of test vaccines needs to be evaluated by quantification of the triggered cellular immune response. Usually, for these assays, autologous target cells expressing the vaccine antigen are required. In the context of messenger RNA (mRNA)-based vaccinations, the target cells used for the read-out are mRNA-transfected monocyte-derived dendritic cells (Mo-DCs). Their production typically requires samples of 100 ml blood from the patients, and limits the number of assays that can be performed. We show here that fresh peripheral blood mononuclear cells (PBMCs) can be transfected with mRNA by electroporation. Such cells are as efficient as mRNA-transfected Mo-DCs for their ability to activate memory T cells in vitro. Thus, mRNA-transfected PBMCs are a convenient replacement of mRNA-transfected Mo-DCs for the in vitro monitoring of natural or vaccine-induced immune responses.Received 17 February 2005; received after revision 1 May 2005; accepted 7 Juni 2005