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121.
Abstract System project failures are a well-known part of systems development; however, all the potential risks of planning and executing a project effort are not This article offers heuristic guidelines to help IS managers assess these inherent risk factors before initiating and while executing a project. Case examples illustrate how a particular risk factor can result in a failed systems development effort. 相似文献
122.
Naomi Karten 《Information Systems Management》2013,30(1):75-78
Abstract In addition to software training, users need to learn systems analysis concepts and development techniques that will enable them to develop better and more reliable end-user applications. IS managers should realize that this type of IS-sponsored training not only improves the users’ productivity but the IS staffs as well. 相似文献
123.
Coralia Cartis Nicholas I.M. Gould Philippe L. Toint 《Optimization methods & software》2013,28(3):451-457
This short note considers and resolves the apparent contradiction between known worst-case complexity results for first- and second-order methods for solving unconstrained smooth nonconvex optimization problems and a recent note by Jarre [On Nesterov's smooth Chebyshev–Rosenbrock function, Optim. Methods Softw. (2011)] implying a very large lower bound on the number of iterations required to reach the solution's neighbourhood for a specific problem with variable dimension. 相似文献
124.
Joe Miseli 《Journal of the Society for Information Display》2013,21(6):214-224
On June 1, 2012, the Information Display Measurement Standard version 1 was released. This is the first standard from the worldwide standard group, the International Committee for Display Metrology, a standards committee within SID, and it culminates several years worth of development from many contributors at various levels. It has 26 top‐level chapters and a total over 450 sections of all parts, including over 200 measurement sections and 8 appendices that cover 133 topics of display metrology, tutorials, technical discussions, and references. Herein is an overview of the Information Display Measurement Standard version 1, including the structure of the document, tips, tricks, and hidden features, how it is maintained, support material, a breakdown of its contents, and finally, a sampling of four of the over 200 measurements. The standard is available as a free download and can be found on the International Committee for Display Metrology home page — http://www.icdm‐sid.org . 相似文献
125.
《国际互联网参考资料服务季刊》2013,18(4):21-33
Abstract This paper describes what the World Wide Web is and what is needed in order to access its information. It discusses the future of art and humanities reference resources and presents criteria for evaluating Web sites. A review of the literature related to “Generation X” and their information expectations was done. There is an annotated list of specific World Wide Web resources related to African Diaspora, American Poetry, Comparative Literature, Gay and Lesbian Literature, and Outsider Art. This list provides examples for evaluation and is not meant to be exhaustive. 相似文献
126.
Information-centric networking (ICN) raises data objects to first class routable entities in the network and changes the Internet paradigm from host-centric connectivity to data-oriented delivery. However, current approaches to content routing heavily rely on data-driven protocol events and thereby introduce a strong coupling of the control to the data plane in the underlying routing infrastructure. In this paper, threats to the stability and security of the content distribution system are analyzed in theory, simulations, and practical experiments. We derive relations between state resources and the performance of routers, and demonstrate how this coupling can be misused in practice. We further show how state-based forwarding tends to degrade by decorrelating resources. We identify intrinsic attack vectors present in current content-centric routing, as well as possibilities and limitations to mitigate them. Our overall findings suggest that major architectural refinements are required prior to global ICN deployment in the real world. 相似文献
127.
ABSTRACTThis study focuses on the decisive role played by the digital design environment in the cognitive design process and design thinking. To analyse the cognitive role of digital design tools, we carried out a protocol analysis of conventional design sketching and a 3D sculpture tool. Cognitive evaluation was a differentiating factor when considering the contextual role of the 3D sculpture tool in subsequent evaluations, non-sequential evaluations for conversion, and passive approaches within the design process. Cognitive evaluation played the following roles: validation, extension, navigation, exploration, and confirmation. The navigation, exploration, and extension roles played by non-sequential evaluation were mainly related to inductive design thinking. Finally, the types of cognitive evaluation and their roles when using the 3D sculpture tool were different, according to the design thinking type. This study explored the multidimensional roles of cognitive evaluation using a 3D sculpture tool and its relationship with design thinking types. 相似文献
128.
129.
本文介绍了锦屏二级水电站3#引水隧洞有盖重防渗固结灌浆试验的施工方法和试验参数。通过防渗固结灌浆试验,总结出在灌浆施工中应及时采集的相关信息和采取的施工工艺,既保证了施工质量又保证了施工速度 相似文献
130.
岷江航电犍为枢纽工程建设征地涉及的耕(园)地数量较大,移民生产安置人口较多,安置任务繁重,安置压力大.在遵守国家和四川省有关政策、法规及规范的前提下,根据建设征地区的实际情况、移民环境容量分析成果并结合地方政府的意见和移民安置意愿,拟定了采取农业安置与自谋职业、养老保障安置相结合的生产安置方案. 相似文献