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排序方式: 共有10000条查询结果,搜索用时 15 毫秒
941.
为智能仪表提供一种“十进制浮点数”,其特点是值域宽、值准确,它能代替整、长整型、三字节浮点数、四字节浮点数、BCD码数。用它通信可简化和统一仪表的通信协议,为制定仪表通用通信协议标准创造条件。 相似文献
942.
分析了Web Server的一般结构及功能特点,设计了一种基于Softbase安全数据库系统的Web Server。 相似文献
943.
944.
本文把软件芯片的概念引入快速原型制造(RPM)系统的软件设计之中,根据RPM系统软件结构的特点,对其进行了软件芯片划分,并论述了每个软件芯片的功能。以数控语言解释器软件芯片为例,详细地介绍了RPM系统软件芯片的研制过程。研究了如何用软件芯片构造RPM系统软件。 相似文献
945.
本文介绍了一个基于Internet的信息检索多Agent系统DOLTRI-Agent内多个Agent间的通信框架及其安全机制。主要论述各个Agent间相互通信所采用的通信语言,通信协议以及信息交换和相互合作的方法,在此基础上提出了一种多Agent系统安全通信模型。 相似文献
946.
针对目前智能建筑中几种常见的中央空调机组单元配置及其运行机制,简要分析了采用网络化数字监控技术的空调机组的工作原理,并说明了此类空调配置方案的控制系统结构及其性能特点和应用场合。 相似文献
947.
Chang CW Peng SC Cheng WY Liu SH Cheng HH Huang SY Chang YC 《Proteomics. Clinical applications》2007,1(11):1499-1512
Postsynaptic densities (PSDs), isolated from porcine cerebral cortices, are large disk-shaped aggregates consisting of hundreds of different proteins. To study the protein-protein interactions in such complex supramolecules, we developed a procedure to break up the PSD's overall structure, while preserving some interactions between individual proteins. Using the resulting PSD sample and an indirect immunoabsorption procedure, PSD-95 was isolated along with the α- and β-subunits of calcium calmodulin-dependent protein kinase II (CaMKIIα and CaMKIIβ), α-tubulin, β-tubulin, and Chapsyn110. Similarly, CaMKIIα was isolated along with CaMKIIβ, α-tubulin, β-tubulin, and small amounts of PSD-95. The proteins isolated from PSDs treated with a cleavable bifunctional crosslinking reagent were further subjected to diagonal gel electrophoresis analysis, and the results indicated that CaMKIIα resides next to α-tubulin in the PSD. Overall, the results obtained here suggest that within the PSD, large aggregates of CaMKIIα, CaMKIIβ, α-tubulin, and β-tubulin may occur that indirectly associate with PSD-95 and Chapsyn110. Such a protein organization would allow interactions with F-actin in the cytoplasm and with proteins, such as N-methyl-D-aspartate receptors, which reside on the postsynaptic membrane. Furthermore, it would facilitate binding to proteins such as the various microtubule-associated proteins that reside in the core region of the PSD. 相似文献
948.
Yin L Song XF Qu SF Huang T Mei JP Yang ZY Li J 《Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine》2006,220(8):929-938
This paper reports on the performance evaluation of a dental handpiece in simulation of clinical finishing using a novel two-degrees-of-freedom (2DOF) in vitro apparatus. The instrumented apparatus consisted of a two-dimensional computer-controlled coordinate worktable carrying a dental handpiece, a piezoelectric force dynamometer, and a high-speed data acquisition and signal conditioning system for simulating the clinical operations and monitoring the dental finishing processes. The performance of the dental handpiece was experimentally evaluated with respect to rotational speed, torque, and specific finishing energy under the applied clinical finishing conditions. The results show that the rotational speeds of the dental handpiece decreased by increasing either the depth of cut or the feed rate at a constant clinically applied air pressure and water flowrate. They also decreased when increasing both the tangential and normal finishing forces. The specific finishing energy decreased with an increase in either depth of cut or feed rate, while the finishing torque increased as either the depth of cut or the feed rate was increased. Implications of these results were to provide guidance for proper applications of dental handpieces in clinical practice. 相似文献
949.
950.
A co-location pattern is a group of spatial features/events that are frequently co-located in the same region. For example, human cases of West
Nile Virus often occur in regions with poor mosquito control and the presence of birds. For co-location pattern mining, previous
studies often emphasize the equal participation of every spatial feature. As a result, interesting patterns involving events
with substantially different frequency cannot be captured. In this paper, we address the problem of mining co-location patterns with rare spatial features. Specifically, we first propose a new measure called the maximal participation ratio (maxPR) and show that a co-location pattern with a relatively high maxPR value corresponds to a co-location pattern containing
rare spatial events. Furthermore, we identify a weak monotonicity property of the maxPR measure. This property can help to
develop an efficient algorithm to mine patterns with high maxPR values. As demonstrated by our experiments, our approach is
effective in identifying co-location patterns with rare events, and is efficient and scalable for large-scale data sets.
相似文献
Hui XiongEmail: |