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81.
Manfred Thaller 《Computers and the Humanities》1991,25(2-3):149-162
Since 1978 research in the development of software dedicated to the specific problems of historical research has been undertaken at the Max-Planck-Institute für Geschichte in Göttingen. From a background of practical experiences during these years, a concept of what an appropriate workstation for an historian would be has been derived. It stresses the necessity of three components: (a) software, derived from a detailed analysis of what differentiates information contained in historical sources from such present in current material, (b) databases which are as easily available as printed books and (c) knowledge bases which allow software and data bases to draw upon the information contained in historical reference works. A loose network of European research projects, dedicated to the realization of such a setup, is described.Manfred Thaller has a Ph.D. (1975) in Modern and Medieval History and held a post-doctoral fellowship in sociology at the Institute for Advanced Studies (Vienna). Since 1978 he has been at the Max-Planck-Institute for History, where he is a research fellow for Historical Information Science. 相似文献
82.
83.
特殊库房多点温度检测系统 总被引：2，自引：0，他引：2
刘贤锴 《计算技术与自动化》2004,23(4):58-60
介绍了使用电脑来测量、记录、显示、管理特殊库房多点温度系统的原理。重点介绍了软件的实现和传感器的自动校正技术,使用传感器校正技术大大节约了用户的运行成本。同时还介绍了该系统的技术指标、实现方法、以及运行结果。 相似文献
84.
在.NET平台上操作COM接口,访问DCS、SCADA等自动化系统提供的OPC历史数据服务器,从中抽取历史数据,或对历史数据聚合运算,为工业过程数据仓库提供数据源。 相似文献
85.
邵晋涵史学批评述论 总被引：1，自引：0，他引：1
罗炳良 《北方工业大学学报》1997,(2)
清代乾嘉时期著名学者邵晋涵，留给世人的印象仅仅是精通经学和历史考证的汉学家，其实他也是一位史学理论家。邵晋涵对中国古代史学所作的批评，特点鲜明，包含着丰富的史学思想，具有重要理论价值。 相似文献
86.
基于特定的文化背景,可北方城市回收街区的整体环境,组成要素,街区结构有其品质进行了较全面深入的研究。在论文中隐含着一个重要的论点一特定的文化因素对街萄的结构开矿起到制导作用。 相似文献
87.
城市发展更新的加快,使我国历史文化名城遭受不同程度的破坏。通过比较国内外有关的实践经验,作者认为应将历史街区作为保护的重点。并力图探索一条如何在传统与现代,整治与保护以及资金短缺等矛盾中实施保护的切实可行之路。 相似文献
88.
The paper describes a prototype system called HiSQL (Historical SQL) which extends the functionality of SQL in manipulating
historical data, by providing functions for spatial and temporal processing. Conceptually the paper is divided into three
parts: the first part deals with the design and architecture of the system; the second part introduces a case study (the defters);
and the third part describes specific functions for spatial and temporal processing of serial documents. The paper concludes
with a comparison between HiSQL and SQL and suggestions for further work.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
89.
Forestlands in the United States have tremendous potential for providing feedstocks necessary to meet emerging renewable energy standards. The Lake States region is one area recognized for its high potential of supplying forest-derived biomass; however, the long-term availability of roundwood harvests and associated residues from this region has not been fully explored. Better distribution and temporal availability estimates are needed to formulate emerging state policies regarding renewable energy development. We used a novel predictive methodology to quantify sustainable biomass availability and likely harvest levels over a 100-year period in the Lake States region. USDA Forest Inventory and Analysis estimates of timberland were combined with published growth and yield models, and historic harvest data using the Forest Age Class Change Simulator (FACCS) to generate availability estimates. Monte-Carlo simulation was used to develop probability distributions of biomass harvests and to incorporate the uncertainty of future harvest levels. Our results indicate that 11.27–15.71 Mt y−1 dry roundwood could be sustainably harvested from the Lake States. Assuming 65% collection rate, 1.87–2.62 Mt y−1 residue could be removed, which if substituted for coal would generate 2.12–2.99 GW h of electricity on equivalent energy basis while reducing GHG (CO2e) emission by 1.91–2.69 Mt annually. In addition to promoting energy security and reducing GHG emissions, forest residues for energy may create additional revenues and employment opportunities in a region historically dependent on forest-based industries. 相似文献
90.
As many of the installed wind turbines (WTs) get older or approach their design life, there will be a drive to keep extending the lives of the main components especially the gearbox. The challenge of operations and maintenance will potentially be even more as there will be a need to keep the cost to a minimum. Similarly, as years of experience of operating WTs accumulate, knowledge about the behaviour and failure of subsystems is gained as well. Also with good documentation and repository of historical operational, performance and failure data, future decisions of operations and maintenance can be taken on the basis of insights from past experience. This paper presents an approach for implementing preventive maintenance (PM) by using historical failure data to determine the optimal PM interval required to maintain desired reliability of a typical module or subassembly. This paper builds upon previous research in the area of WT gearbox reliability analysis and prediction, taking it further by examining the relationships between the frequency of a PM task and the reliability, availability and maintenance costs. The approach presented demonstrates how historical in‐service failure data can be used in PM task selection based on the minimum maintenance cost and maximum availability. Available historical field failure data of the high speed module of a Vestas 2MW WT gearbox is used to validate the approach and show its practicality. The results of this study are then presented—indicating that choosing the right PM interval based on the minimum unit maintenance cost and maximum availability also improves WT gearbox reliability. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献