组合化学：新药创制的高效方法与技术

阐述了一种新药创制及绿色化学的高效方法与技术——组合化学的起源、现状、建库及活性物鉴别表征,固相与液相组合合成,介绍了各种分析手段在大规模组合化学与高通量群集筛选中的应用。讨论组合化学信息与计量学的应用：估计合成收率,预测产物活性。说明了绿色组合化学能充分利用资源和原料,节省人力和时间。将组合化学与药物设计相结合,可望高效寻找到理想新药。同时还扼要交流了实验室完成的工作,并对组合化学发展作出展望。     

Source of a floating dust episode over the Qingdao region and dust throughput to the ocean

A floating dust weather happened on March 11–12, 1995 over the Qingdao region. Its source’s and throughput to the ocean were studied. The result indicated that the floating dust was caused by the dust storm that started in northwestern China and developed in northern China. 21 × 10⁶t fine soil particles were carried to the ocean during the episode.     

流体网络拓扑分析的研究

从建模对象的系统图出发,详细探讨了流体网络的拓扑分析策略,并首次提出端口组的概念,解决了一个模块在同一个网络中可能具有多个支路或节点编号的问题,这在国内外同类软件中尚属首次。并根据以上的研究成果成功地研制了一套单相流流体网络自动建模软件,利用该软件,用户只需输入建模对象的系统图并进行实例化,即可自动产生它的流体网络仿真模型,实践证明该软件是可靠的,利用它可大大地提高建模效率和建模质量。     

长江外贸集装箱运量预测和码头装卸工艺优选

本文利用新陈代谢ＧＭ（１，１）模型、二次指数滑动平均法、计量经济学模型３种预测模型对上海港进行了外贸集装箱吞吐量的预测，并结合考虑长江各主要港口在共同航线上的运量分配及航线运量占该港吞吐量的比重，对各港口进行了外贸集装箱吞吐量和主要航线运量预测。然后，运用多目标决策理论中的线性分配法与层次分析法，分析了不同运量水平下港口装卸工艺系统的优选问题，并利用外贸集装箱的预测结果，得到了这些港口装卸工艺的优     

集装箱吞吐量及主要影响因素的计量经济分析

利用近年来的相关数据对港口集装箱吞吐量、港口所在城市的国民生产总值以及地方进出口商品总值进行了计量经济分析,通过二元线性回归模型对港口未来集装箱吞吐量进行预测,并对模型进行了相关检验,为港口岸线资源的合理开发与利用提供决策依据,为港口未来发展以及定位提供参考.     

不可逆过程中的能量耗散函数

不可逆过程热力学提供了研究传输过程统一的标准方法.文章介绍了在有交互传输的系统中,其不可逆过程中的能量耗散函数的数学表达式。     

Path Weight Complementary Convolutional Code for Type-Ⅱ Bit-Interleaved Coded Modulation Hybrid ARQ System

Bit-interleaved coded modulation (BICM) is suitable to bandwidth-efficient communication systems. Hybrid automatic repeat request (HARQ) can provide more reliability to high-speed wireless data transmission. A new path weight complementary convolutional (PWCC) code used in the type-Ⅱ BICM-HARQ system is proposed. The PWCC code is composed of the original code and the complimentary code. The path in trellis with large hamming weight of the complimentary code is designed to compensate for the path in trellis with small hamming weight of the original code. Hence, both of the original code and the complimentary code can achieve the performance of the good code criterion of corresponding code rate. The throughput efficiency of the BICM-HARQ system wit PWCC code is higher than repeat code system, a little higher than puncture code system in low signal-to-noise ratio (SNR) values and much higher than puncture code system, the same as repeat code system in high SNR values. These results are confirmed by the simulation.     

VPN连接的建立和配置

Windows 2000除了提供PPTP协议外还提供了L2TP协议，用于建立VPN连接。本文讨论了Windows2000中的VPN组成结构，并给出服务器和客户机之间VPN连接的配置方法。     

蜂窝无线系统中的联合功率与速率控制

蜂窝无线系统中多媒体业务的发展，要求对用户传输速率进行有效的控制，以充分利用频谱资源。针对多速率系统，提出了一种新的联合功率与速率控制迭代算法。对于可行系统，它能够在获得最大吞吐量的同时最小化所消耗的功率。仿真结果表明，在可行系统中算法的能量消耗性能优于Kim S．L．提出的选择功率控制算法；在不可行系统中，吞吐量和能量消耗性能均优于选择功率控制算法。     

New approach for screening anti—tumor compounds

A new screening approach for anticancer active compounds is presented.In this method,a target enzyme is incubated with a mixture of compounds,and then the com-plex formed by the target and small molecules is separated from the rest of the mixture by ultra-filtration.The complex that is retained on the membrane is subsequently washed with acid and small molecules that are specifically bound to the target are released and collected,then analyzed by high-performance liquid chromatograph combined with electrospray ionization mass spectrometry (HPLC/ESI-MS) analysis.We have successfully applied this method to screen anti-cancer compounds.DNA topoisomerase Ⅱ is used as a target to capture anti-tumor candidates from a mixture of combinatorial compounds,such as doxorubicin,daunorubi-cin and pravastain.