Coordination in networks: An economic equilibrium analysis

Networks utilizing modern communication technologies can offer competitive advantages to those using them wisely. But due to the existence of network effects, planning and operating cooperation networks is difficult. In this paper, the strategic situation of individual agents deciding on network participation is analysed. A systematic equilibrium analysis using computer-based simulations reveals principal solution scenarios for network agents and shows that network cooperation problems might frequently be not as difficult to resolve as often feared. In particular, strategic situations are identified showing that a majority of individuals might be better off getting the optimal solution from a central principal and that in many cases simple information intermediation can solve the start-up problem notorious in network economics.     

万家寨水电站经济运行的措施

针对黄河近几年来水量逐年减少和电力市场的变化 ,对提高万家寨电站的经济运行效益问题 ,进行了分析     

A Software Tool for Automatically Verified Operations on Intervals and Probability Distributions

We describe a software tool for performing automatically verified arithmetic operations on independent operands when the operands are intervals, or probability distribution functions, or one operand is an interval and the other is a distribution. Intervals and distributions are expressed using the same technique, so the algorithms do not need to distinguish between intervals and distributions in their operation. The tool can calculate common arithmetic operations with guaranteed results (as well as confidence limits on a distribution if the distribution is empirically estimated from samples).A previous paper [1] discusses the concepts, algorithms, and related work. Here we emphasize a software tool that implements the algorithms, interacts with the user via a graphical user interface, and saves, retrieves, and prints the results of its calculations.     

镁合金及镁基复合材料阻尼性能研究进展

简要介绍了纯镁、镁合金及镁基复合材料的位错型阻尼机理,叙述了温度、合金成分、组织结构和微观缺陷(包括晶界相界)以及热处理等因素对镁合金阻尼性能的影响.镁基复合材料较镁合金有较高的阻尼性能,是由于增加了多种阻尼机制的结果,其中最重要的是塑性区阻尼、位错密度的增大、界面滑移阻尼等.     

光栅微振动测试传感技术的研究

提出了一种微弱地震波信号新的检波理论和方法．设计了一种测微振动传感器，采用光栅谐振子为敏感元件，将地震的机械信号转换成光调制信号——莫尔条纹，再用光电器件将其转换成数字化电信号．采用80倍细分技术，使传感器分辨力达到125nm；用MATLAB软件对PIC单片机记录的信号进行振动过程重构．结构中设计了横向限振片和光栅调节器，对光栅间隙、光栅间纵横向夹角进行调节，有效地限制了光栅间隙及角度的变化产生的误差．同时也校正了光栅的累积误差．有效地抑制了横向振动，提高了系统精度，同时可降低对该系统的横向限振要求，有利于结构设计．由于该传感器直接将地震的机械信号以脉冲数字信号输出，避免了器件精度不同对传感器输出数据质量的影响，简化了组装工艺．重点介绍了光栅数字地震检波器的结构设计、理论分析、辨向细分技术等．最后给出了测试数据和结论．     

锌板带连铸连轧机组电气控制系统

本文介绍我院为万县电池厂开发设计的250mm锌板带连铸连轧机组的电控系统的组成及控制特点，并根据现场调试运行情况对设计中需要注意的问题进行了重点阐述。     

Internet的定价研究

Internet作为一个半公共物品被广泛应用于许多领域，一直面临如何有效对Internet进行定价的问题．提出了Internet定价中存在的问题，分析了定价机制，并尝试性地给出了一个定价模型．Internet定价是一个动态过程，定价依赖于使用者的类型、使用时间和网上阻塞情况。     

Ti(OC4H9)4-PbO均相催化反应蒸馏合成碳酸二苯酯

通过对碳酸二甲酯与苯酚酯交换法反应蒸馏合成碳酸二苯酯的研究,筛选合适的催化剂和寻找最佳的工艺条件,为将来碳酸二苯酯的工业化打下基础.实验结果表明在常压下,温度132℃,原料中苯酚与碳酸二甲酯的摩尔配比为21,苯酚与催化剂的摩尔配比为10.012,钛酸四丁酯与氧化铅的摩尔配比为11,反应时间12 h,碳酸二甲酯总转化率为45.43%,碳酸二苯酯产率为26.33%,碳酸苯甲酯产率为19.10%,碳酸二苯酯的选择性为57.96%,且无苯甲醚和CO2生成.所选催化剂Ti(OC4H2)4-PbO的催化性能明显优于二丁基二月桂酸锡和PbO.     

Simulation Study of Aspects of the Classical Hydrogen Atom Interacting with Electromagnetic Radiation: Elliptical Orbits

The present study examines the behavior of a classical charged point particle in near-elliptic orbits about an infinitely massive and oppositely charged nucleus, while acted upon by applied electromagnetic radiation. As recently shown for near-circular orbits, and now extended here to the elliptical case, rather surprising nonlinear dynamical effects are readily produced for this simple system. A broad range of stability-like conditions can be achieved by applying radiation to this classical atom. A perfect balance condition is examined, which requires an infinite number of plane waves representing harmonics of the orbital motion. By applying a scale factor to this radiation, stability-like conditions are produced where periodic variations in semimajor and semiminor axes occur for extended periods of time, before orbital decay eventually takes over due to the effects of radiation reaction. This work is expected to lead to both practical suggestions on experimental ideas involving controlling ionization and stabilization conditions, as well as hopefully aiding in theoretical explorations of stochastic electrodynamics.