基于VW2010芯片的嵌入式多媒体监控系统压缩/解压卡设计

在简要分析了多媒体监控系统发展现状的基础上，提出了一种基于VW2010压缩／解压芯片的多媒体压缩／解压卡的设计方案，给出了基于VW2010的多媒体监控系统压缩和解压卡的硬件结构图以及在Linux系统下VW2010的驱动程序，同时给出了在Linux Redhat7．3下编写的测试程序，并进行了全面的测试。     

生产系统的计算机仿真研究

生产系统在设计与运行过程中面临着诸多的问题需要解决，计算机仿真技术作为一种有效验证生产系统设计合理性和辅助生产管理决策的手段，近年来在我国得到了越来越广泛的关注。该文系统总结了计算机仿真技术对生产系统的重要作用，利用Ithink5.0软件建立了简单生产过程的计算机仿真模型并进行了分析。     

Frequency domain identification of Wiener models

This paper proposes a frequency domain algorithm for Wiener model identifications based on exploring the fundamental frequency and harmonics generated by the unknown nonlinearity. The convergence of the algorithm is established in the presence of white noise. No a priori knowledge of the structure of the nonlinearity is required and the linear part can be nonparametric.     

Model Selection in Applied Science and Engineering: A Decision-Theoretic Approach

Mathematical models are developed and used to study the properties of complex systems in just about every area of applied science and engineering. Information on the system being modeled is, in general, incomplete, so that there may be two or more models consistent with the available information. The collection of these models is called the class of candidate models. A decision-theoretic method is developed for selecting the optimal member from the collection. The optimal model depends on the available information, the class of candidate models, and the model use. The candidate models may be deterministic or random. Classical methods for model selection, including the method of maximum likelihood and Bayesian methods, are briefly reviewed. These methods ignore model use and require data to be available. In addition, examples are used to show that classical methods for model selection can be unreliable in the sense that they can deliver unsatisfactory models when data is limited. The proposed decision-theoretic method for model selection does not have these limitations. The method accounts for model use via a utility function. This feature is especially important when modeling high-risk systems where the consequences of using an inappropriate model for the system can be disastrous.     

Burner Performance Evaluation Using Test Code

Development of new burner technology is common practice nowadays. Standardized test codes are available to conduct tests to determine operating characteristics and thermal performance of different parts of steam generating units. This paper describes the results of testing performed to evaluate thermal efficiency of a 74.5?kW fire-tube steam generator fired with a new premixed flame burner in comparison to a typical standard-retrofit diffusion flame burner system. Two premixed flame burners sized at 7.6 and 10.1?cm were tested. Testing was performed in accordance with the ASME PTC 4.1 Power Test Code. The evaluation was conducted in the range of small- to mid-sized, natural gas-fired applications, from 1.06?to?2.64×106?kJ/h. The environmental nitrogen oxide (NOx) emissions performance was also compared for both burner technologies. The results of this evaluation indicate that firing the test boiler with the 7.6?cm new burner slightly improves unit thermal efficiency by 4.0–3.3% for a unit load ranging from approximately 1.06?to?1.79×106?kJ/h, respectively. Operation with the 10.1?cm new burner improves the thermal efficiency by approximately 1.6% at 2.32×106?kJ/h. The uncertainty in the measurements used in the efficiency calculations should account for approximately ±1.5% uncertainty in the reported gross efficiency. Reductions in NOx emissions of the order of 10% resulted from operation with the new premixed flame burners.     

战略环境评价的计算机模拟研究

基于可持续发展的目标，研究产业结构战略环境评价的方法，提出评价模型，以长春市产业结构调整政策为例，对评价模型进行了验证，仿真结果表明，资本、环境和人口三个子系统显著相关，任一系统的变化都会影响到其它系统，并且三个系统的变化呈现非线性关系。     

我国矿业城市实现可持续发展的途径分析

详细分析我国矿业城市可持续发展所面临的社会、经济、资源和生态环境等问题，提出了我国矿业城市应树立可持续发展目标及其内涵，系统分析矿业城市可持续发展的结构和模式，结合我国矿业城市发展存在的主要问题，以矿业城市可持续发展理念为指导，提出我国矿业城市实现可持续发展的途径及其建议。     

高校人事制度改革探讨

市场经济条件下高校人事制度改革是一项综合性的皋杂工作，涉及人事体制、人力资源配置、制度建设等多方面改革，本文阐述了改革的基本思路，并就如何实施进行了探讨。     

国际函件处理信息系统设计

本文试图从系统整体及行业MIS建模方法出发，对国际函件处理信息系统进行了系统设计．在设计中，遵循了对象模板法的开发思想，采用了FoxPro与Excel相结合的技术．所开发出的系统功能较齐全，人权界面友好，具有一定的推广应用价值．