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991.
Jerry L. Trahan Mingxian Jin Wittaya Chantamas Johnnie W. Baker 《Journal of Parallel and Distributed Computing》2010
The MASC (Multiple ASsociative Computing) model is a multi-SIMD model that uses control parallelism to coordinate the interaction of data parallel threads and supports associative SIMD computing on each of its threads. There have been a wide range of algorithms developed for this model. Research on using this model in real-time system applications and building a scalable MASC architecture is currently quite active. In this paper, we present simulations between MASC and reconfigurable bus-based models, e.g., various versions of the Reconfigurable Multiple Bus Machine (RMBM). Constant time simulations of the basic RMBM by MASC and vice versa are obtained. Simulations of the segmenting RMBM, fusing RMBM, and extended RMBM by MASC in non-constant time are also discussed. By taking advantage of previously established relationships between RMBM and two other popular parallel computational models, namely, the Reconfigurable Mesh (RM) and the Parallel Random Access Machine (PRAM), we extend our simulation results to further categorize the power of the MASC model in relation to RM and PRAM. 相似文献
992.
993.
Consumer perceptions on web advertisements and motivation factors to purchase in the online shopping
The principal objective of this study was to investigate the mediating and moderating effects of product involvement and trust toward websites in relation to the effects of the attributes of web advertisements on customers’ purchase intentions. We collected data consisting of a total of 264 responses from individuals with previous experience with purchasing products from online shopping mall sites, and utilized the PLS (partial least squares) method to analyze the collected data. 相似文献
994.
Drawing upon the Entertainment–Education paradigm, this study evaluated the effectiveness of a computer-aided interactive test designed for stress management education targeting college students. The presence (vs. absence) of a virtual agent incorporated into the interactive test was proposed as the key factor that induces enjoyment and educational outcomes. The interactive test consisted of scenarios describing stressful situations that could occur in college students’ everyday lives. Furthermore, college students could relate the concerns raised by these hypothetical situations to the ways they manage their stress and mental health. After the student’s choice behavior in each scenario, a virtual agent conveyed health-related educational messages via a text-modal dialogue box. Participants who took the interactive test in which there was a virtual agent perceived the test as more educational and entertaining than those who took the test without a virtual agent. Results of a path analysis also revealed a significant mediating role of enjoyment on educational outcomes (i.e., students’ enjoyment of the interactive test mediated the effects of the presence of a virtual agent on their perceived educational value of health information), thus confirming the Entertainment–Education link. In addition, engaging in the interactive test resulted in stress management self-efficacy improvement. Theoretical and practical implications are discussed. 相似文献
995.
Efficient monitoring of parametric context-free patterns 总被引:1,自引:0,他引:1
Patrick O’Neil Meredith Dongyun Jin Feng Chen Grigore Roşu 《Automated Software Engineering》2010,17(2):149-180
Recent developments in runtime verification and monitoring show that parametric regular and temporal logic specifications
can be efficiently monitored against large programs. However, these logics reduce to ordinary finite automata, limiting their
expressivity. For example, neither can specify structured properties that refer to the call stack of the program. While context-free
grammars (CFGs) are expressive and well-understood, existing techniques for monitoring CFGs generate large runtime overhead
in real-life applications. This paper demonstrates that monitoring parametric CFGs is practical (with overhead on the order of 12% or lower in most cases). We present a monitor synthesis algorithm for CFGs based on an
LR(1) parsing algorithm, modified to account for good prefix matching. In addition, a logic-independent mechanism is introduced
to support matching against the suffixes of execution traces. 相似文献
996.
Yan Jin 《突发事故与危机管理杂志》2010,18(1):49-54
This study examined the perceived crisis preparedness of a random sample of public relations practitioners in the United States (N=144) as evidenced in their assessment of crisis situation and organizational resources. The main effects of organization size and practitioner role were evident on practitioner's perceived crisis preparedness in different crisis situations. Organization type was found to be effective only when it interplayed with either practitioner role or organization size. 相似文献
997.
PAC在气体流量标准装置中的应用 总被引:1,自引:0,他引:1
为实现气体流量计检定测试的准确性、提高试验系统的自动化程序和可靠性,在气体流量标准装置中采用可编程自动化控制器PAC控制方式.考虑到测试条件应接近流量计的真实工作环境这一因素,设计了气源系统精确调节方法及其相应程序.经过实践证明,基于PAC的变频调速技术在气体流量检定测试过程中的应用效果良好,满足流量计检定要求. 相似文献
998.
999.
该文介绍了现代信息融合技术的出现和发展过程,详细地分析了该技术对现代科技发展的影响,系统地对信息融合与战争、经济、文化之间的关系进行了阐述,并从哲学分析的角度提出了信息融合是科学技术生态转向时期的历史必然。最后结合这一问题总结了其对人类社会进步的意义和弊端。 相似文献
1000.
该文将模糊集的相关理论应用到软件可靠性评价上面,取得了较好的评价效果。论文首先介绍了模糊集的相关理论,利用在软件工程中具有一定模糊度的“软件可靠性”的概念对软件可靠性评价方法进行了论述。该方法无论是理论上,还是在软件可靠性评价中的应用方面,都充分体现了模糊集的特殊价值,并值得计算机软件人员在今后进行较为深入的研究。 相似文献