Eco-environmental water requirement for wetlands in Huang-Huai-Hai Area, China

Based on the related literature and the analysis of the relationship between wetland ecosystem and hydroperiod, the estimating and classifying methods of eco-environmental water requirement for wetlands are established. The data collected from Huang-Huai-Hai Area are from the electronic map (1∶250000) of China National Topographical Database of 1997 and the historical statistics since the 1980s.The results indicate that the minimum eco-environmental water requirement for wetlands is 16.98×109 m3 and the optimal one is 38.38×109 m3 in the studied area. For the five wetland nature reserves covered in the area, the values are 1.47×109 m3 and 3.31×109 m3 respectively. The comparisons of the mentioned minimum water requirement with the status water use, which is 17.05×109 m3 for wetland ecosystem (1997 as the status year), suggest that the water use has not met the minimum eco-environmental water requirement in the Haihe and Huanghe Basins of the studied area. However, the status water use guarantees and exceeds the minimum eco-environmental water requirement in the Shandong Peninsula and the Huaihe Basin. Based on the eco-environmental programming and water resource planning of the studied area, the study establishes the water requirement of the year of 2010, 2030, 2050, when the eco-environmental water requirement for wetlands is 18.30×109 m3, 21.64×109 m3 and 26.76×109 m3, respectively.     

论会计人才的素质要求与培养

现代经济迅速发展,对会计工作产生了巨大影响,对会计人员的素质也提出了更高的要求,主要包括综合型的知识结构、完善的职业道德素质、高标准的职业判断能力、综合服务能力、开拓创新素质、较强的竞争力和应变力以及新技术的运用能力等。基于此,提出了新形势下会计人才的培养目标。     

住宅发展策略分析模型及计算机实现

本文详细地介绍了住宅发展策略分析模型及其建模方法。我们借助系统动力学,试图开创一种把定性分析、定量分析、系统理论以及计算机知识有机地集成一体地建立复杂社会系统仿真模型的方法,以瓦房店市住宅发展为背景,开展了这一方面的研究工作。经实例演示,我们所建的模型是决策人进行住宅发展策略研究的有力工具。     

中国股市回报波动性分析--高频数据揭示股市的特征

以MDH假设为基础．采用高频数据建立我国股市日内波动特征的理论模型。利用频域分析工具实证得出上海股票市场波动性的日内周期特征和长记忆特征。对滤波之后自相关函数进行回归，计算得到表征上海股市长记忆大小的d值。     

xmlTRAM +:an XML-based tool for management of requirements and architectures

Information systems have been increasingly used in all aspects of organization's business activities. These systems will inevitably evolve over time. The system development knowledge is a key to the understanding and evolution of these systems. As such, the system development knowledge is a part of the corporate knowledge that needs to be properly managed. In particular, the system requirements and architecture design are the most important system development knowledge. An XML-based tool for managing system requirements and architectures is introduced. The use of the XML technology allows the system requirements and architectures to be easily shared across the organization. The issues discussed include a conceptual model, a logical model and a physical model for the management of system requirements and architectures. In fact, this three-step development process provides a typical methodology for the development of XMLbased systems.     

竞争?或者合作?——基于报童决策的底线和现状利润双参照点研究

本文将行为决策理论关于多参照点的最新成果引入报童模型，探讨底线和现状利润双重参照点对报童行为决策的影响.其中底线导致决策者产生失败规避而现状导致损失规避的心理效用.特别地，考虑底线利润为外生变量而现状利润可能为外生或内生两种情况.研究发现，由于失败规避和损失规避的心理效应，外生底线点和外生现状点均产生负向决策偏差，此时双参照点为合作关系；当底线为外生而现状利润为内生变量时，考虑到决策者的内生乐观程度，报童决策可能大于（或小于）理论最优订货量，此时双参照点或为竞争或为合作关系.通过敏感性分析，进一步发现报童最优订货量与批发价、底线点、乐观程度和失败规避系数等负相关，并且在一定条件下随零售价和损失规避系数的增大而减小.     

Poser4内存点的外部控制

动态分析Poser4系统以及内存点,得到内存点工作原理,给出内存点的外部控制通用方法。     

高校数字图书馆对外服务功能的发展——社会化

随着信息技术的发展 ,社会对信息的需求不断增强 ,高校数字图书馆不仅更好地满足了高校内部广大师生的需求 ,而且其服务功能亦有了显著的变化 .高校数字化图书馆的社会化是社会发展的必然趋势     

从低碳经济产业链分析资源型城市转型发展中的技术需求——以太原市为例

低碳经济是建设资源节约型、环境友好型社会的新的技术范式和生产力发展方式。在低碳经济发展进程中．低碳技术的作用不可估量。结合太原市能源情况,从低碳经济产业链能源供应、能源存储和运输、能源消费3个环节分析了太原市发展低碳经济的技术需求,并提出发展重点。     

Comparison of SETAM with security use case and security misuse case: A software security testing study

A software security testing behavior model,SETAM,was proposed in our previous work as the integrated model for describing software security testing requirements behavior,which is not only compatible with security functions and latent typical misuse behaviors,but also with the interaction of them.In this paper,we analyze the differences between SETAM with security use case and security misuse case in different types of security test requirements.To illustrate the effectiveness of SETAM,we compare them in a practical case study by the number of test cases and the number of faults detected by them.The results show that SETAM could decrease about 34.87% use cases on average,and the number of faults detected by SETAM increased by 71.67% in average,which means that our model can detect more faults with fewer test cases for software security testing.