流程企业生产过程集成建模方法研究

针对流程企业对市场变化反应较慢的缺点,提出了流程企业的生产过程物流、资金流和工作流集成建模方法。利用物流模型生成资金流模型,通过对资金流的优化实现物流的优化,在物流优化的实现阶段,将人员的安排以工作流模型的方式集成到物流模型中来,从而实现物流、资金流和工作流的集成建模。利用该集成模型进行决策,可提高企业对市场的反应速度。     

超长周期大地电磁数据采集系统的设计与实现

超长周期大地电磁探测是研究大陆岩石圈导电性结构的有效方法之一.针对超长周期宽频带大地电磁数据的特点和采集技术要求,首次使用CIRRUS LOGIC公司生产的CS5372和CS5376A模数转换及数字滤波套片,建立了低功耗、低采样率、多通道的长周期智能化数据采集系统.并面向系统开发过程,提出该套片与FPGA芯片EP1K300QC208-3组合使用中的软硬件设计.     

环境友好型缓蚀剂对铜的缓蚀作用研究

将钨酸钠和聚天冬氨酸这两种环境友好型水处理药剂有机结合,采用静态挂片实验法,对铜的缓蚀作用进行复配研究,并提出了一个最佳的缓蚀剂配方.     

QoS-Aware Composite Services Retrieval

For current service-oriented applications, individual web service usually cannot meet the requirements arising from real world applications, so it is necessary to combine the functionalities of different web services to obtain a composite service in response to users＇ service requests. In order to address the problem of web service composition, this paper proposes an efficient approach to composing basic services in case no any individual service can fully satisfy users＇ requests. Compared with the general strategies adopted in most previously proposed approaches where only the best composition solution is produced, the QoS-aware service composition approach is given and top k solutions in the framework are provided, rather than focusing on obtaining the best composition solution, since the presented approach allows more candidates that are likely to meet the requirements of the users. The approach is based on a succinct binary tree data structure, and a system,named ATC （Approach to Top-k Composite services retrieval） system is implemented. In ATC, Qos is taken into account for composite service, and a heuristic-based search method is proposed to retrieve top k composite service. Some extensive experiments are designed and two web service benchmarks are used for performance study. The experimental results snow that the proposed approach can assure high precision and efficiency for composite service search.     

Pore structure characterization and its effect on methane adsorption in shale kerogen

Pore structure characterization and its effect on methane adsorption on shale kerogen are crucial to understanding the fun-damental mechanisms of gas storage,tr...     

服务器集群技术在Jabber系统中的应用

讨论了Jabber技术的特点,Janber系统特别是服务器端的架构,以及服务器集群技术的发展现状和一些具体的实现及结构,最后得出一种在Jabber系统服务器端运用LVS（Linux Virtual Serve,）技术的实现方法。     

一种双向压缩的二维特征抽取算法及其应用

针对二维主分量分析（2DPCA）在最优投影轴上的投影是一个向量,其抽取出的图像特征是一个矩阵,特征数据量大,不便于直接分类的弱点,提出了一种特征抽取新方法。首先用2DPCA作一次横向压缩,对抽取出的特征矩阵再作一次2DPCA进行纵向压缩。这样抽取出的特征数量大大减少,可加快分类速度。ORL人脸库的试验结果表明了该方法的有效性。     

iSCSI SAN中高速虚拟网络I/O通道技术研究

针对目前iSCSI SAN中网络链路的性能瓶颈和单点故障问题,研究了虚拟网络I／O通道技术。将多个物理网络接口绑定为一个虚拟网络接口,使得多条物理链路整合为一个逻辑网络L／O通道,数据包按照负载均衡算法通过多条链路并行传输,大大提高iSCSI SAN吞吐率和系统的可用性。最后通过性能分析和实验测试得以验证。