水土保持经济效益计算方法研究─-以铁瓦河小流域为例

遵循《水利建设项目经济评价规范》（ＳＬ７２-９４）及《水土保持综合治理效益计算方法》（ＧＢ／Ｔ１５７７４─１９９５）,以铁瓦河小流域水土保持工程为例,研究水土保持直接经济效益计算方法,得出的结果符合铁瓦河小流域实际情况,与一般规律是相吻合的,表明铁瓦河小流域的直接经济效益是显著的。     

受剪螺栓旋合段的强度计算

本文由分析受剪螺栓在工作时的力平衡,发现奇数结合面的受剪螺栓,其旋合段也存在着剪切破坏和挤压破坏,为此,提出了相应的强度计算公式,相信具有一定的实践意义.     

高层建筑加压送风系统的几个问题

该文论述了高层建筑设置防排烟系统的重要性,分析了同时开启门的楼层数及正压值问题,提出了风口形式不同时,楼梯间及前室分别设置加压送风系统所需的加压送风量的计算公式。     

作为创作工具的多媒体课件开发

分析了用于多媒体课件开发的创作工具应具备的基本功能,并探讨了用创作工具开发课件的方法和步骤．     

Supporting Cognitive Design: Lessons from Human-computer Interaction and Computer-mediated Learning

Cognitive engineering has led to a consideration of the capabilities and limitations of users in relation to the products of system design. However, there has not been a similar recognition of human limitations in the process of design. One way to improve the products of system design is by making improvements in the process of design and, in particular, by addressing the limitations of designers through scaffolding with the technology that is the object of design. To do this we need to identify what we know about the process of designing for computer-mediated learning systems, and to build an understanding of how the design process might benefit from cognitive strategies and computer technology. Here we survey various approaches to support the design process, in order to identify approaches and opportunities that may inform both fields. Specific suggestions include heuristics for design, and scaffolding the design process through support tools. © IFIP, published by Kluwer Academic Publishers     

高压厚壁球罐的弹塑性分析

通过对高压厚壁球罐进行弹塑性分析,得出了弹塑性载荷和塑性极限载荷的计算方法.     

网络时代的未来--网格技术

网格技术实现了网络资源的全面连通,具有成本低、效率高、使用方便等优点,是21世纪工业技术的又一次革命,它的时代正在来临!     

试论引文计量的不确定性——兼论引文计量的规范管理

引文分析数据广泛应用于科学评价,使科技论文引文计量的缺陷开始逐渐显露出来。本文对引文计量的特点及其自身存在的不确定性进行了分析和阐述,并针对其不确定性及目前滥用引文计量的混乱,提出了对引文计量范围、计量方法及评价机构、评价系统的规范管理的建议。

Abstract：

Citation analysis data is widely used in scientific evaluation,which makes the deficiencies of citation calculation of scientific papers begin to emerge.In this paper,the characteristics of citation calculation and its existing uncertainty is expounded.In view of its uncertainty and the current confusion over the abuse of citation calculation,suggestions for standardized management of citation calculation range,calculation method,evaluation organization and evaluation system are proposed.     

Librarians as Advocates of Social Media for Researchers: A Social Media Project Initiated by Linköping University Library,Sweden

ABSTRACT

Librarians at Linköping University help researchers keep abreast of developments in their fields and to increase the visibility of their work. Strategic, professional use of social media ought to be an essential part of a researcher's communication strategy. This article investigates the level of awareness of the professional use of social media among LiU researchers. The investigation showed that use of social media was not significant; however, a small number saw potential. The purpose of this article is threefold. The first purpose was to evaluate the potential of using social media as a tool for communicating research outside LiU. Second, the article presents a study in which views of LiU researchers on social media were ascertained via seminar discussions, informal feedback, and interviews. The study has a case study approach involving eight researchers. Third, the article covers how LiU Library created a web-based information package to support researchers in social media use.     

对航迹计算法几点误解的剖析

针对目前航海人员对航迹计算法产生的几点误解进行了全面的剖析 ,指出应如何正确理解航迹计算公式的图解法 ;旨在帮助航海驾驶员消除误解 ,引导这一方法的正确运用。