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胡汉辉 《九江职业技术学院学报》2004,(2):36-38
PLC与计算机结合起来．可充分利用PLC的优良控制性能和计算机的友好人机界面、数据管理能力，组成高性价比的控制系统。本文介绍通过PLC自由口方式实现与计算机的串口通信。 相似文献
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殷商介词与动词、连词、副词和语气词常有纠葛,学界分歧很大。介词判定需追溯语法化源词的源义,在此基础上甄辨了11个非殷商介词和确认了14个殷商动源介词,介词均由连动结构的次要动词语法化而来。 相似文献
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嵌入式W eb服务器的实现使得用户可以通过浏览器对系统进行监控、管理,也为用户提供丰富、直观的数据表现形式;可编程序控制器(PLC)由于具有程序设计灵活方便、通用性好、抗干扰能力强、可靠性高、能在恶劣的工作环境长期工作等特点,成为工业自动化领域中发展极其迅速的通用控制装置;本文综合嵌入式W eb服务器和PLC的优点,设计一套高性能的远程电力监控系统。 相似文献
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本文介绍了适用于国内企业数控机床的硬件联网方案,可用一台计算机同时与多达255台具有RS232串口的数控机床进行实时数据通信,并实现数控代码的远程传输与接收,为企业网络化制造、自动化生产奠定良好的底层技术基础。系统已在企业成功应用并取得良好效果。 相似文献
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张恨水在报纸副刊上连载小说,采用章回体形式,既是选择了一种文体形式,同时也是选择了一种与报纸周期性相一致的分载形式,更是选择了一种古老而实用的营销策略。张恨水采用章回体在报纸上连载,凭借他的艺术才情成功地避免了报纸连载小说和章回体小说与生俱来的弊端,获得了极大的成功。 相似文献
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《Journal of Intercultural Communication Research》2013,42(2):81-103
This study extends the Western research on serial arguing by replicating that research with a non-American sample: the Malagasy people. Two hundred and twenty-four people were recruited from Madagascar, and from among members of the Malagasy diasporas in France, Québec, and the United States. Consistent with research conducted in the U.S. culture, demand/withdraw conflict behavior was a better predictor of relational outcomes than attempts at reconciliation or the frequency of serial arguing. The study highlighted within-cultural differences. The frequency of serial arguing was positively correlated with vertical individualism and vertical collectivism but negatively correlated with horizontal individualism. 相似文献
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《Information processing & management》2022,59(5):103007
Re-using research resources is essential for advancing knowledge and developing repeatable, empirically solid experiments in scientific fields, including interactive information retrieval (IIR). Despite recent efforts on standardizing research re-use and documentation, how to quantitatively measure the reusability of IIR resources still remains an open challenge. Inspired by the reusability evaluations on Cranfield experiments, our work proactively explores the problem of measuring IIR test collection reusability and makes threefold contributions: (1) constructing a novel usefulness-oriented framework with specific analytical methods for evaluating the reusability of IIR test collections consisting of query sets, document/page sets, and sets of task-document usefulness (tuse); (2) explaining the potential impacts of varying IIR-specific factors (e.g. search tasks, sessions, user characteristics) on test collection reusability; (3) proposing actionable methods for building reusable test collections in IIR and thereby amortizing the true cost of user-oriented evaluations. The Cranfield-inspired reusability assessment framework serves as an initial step towards accurately evaluating the reusability of IIR research resources and measuring the reproducibility of IIR evaluation results. It also demonstrates an innovative approach to integrating the insights from individual heterogeneous user studies with the evaluation techniques developed in standardized ad hoc retrieval experiments, which will facilitate the maturation of IIR fields and eventually benefits both sides of research. 相似文献
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虚拟仪器是由软件实现的．其软件开发平台是LabVIEW。VISA是在所有LabVIEW工作平台上控制VISA、GPIB、RS-232以及其他种类仪器的单接口程序库，通过LabVIEW平台中的VISA模块编写控制程序，可以进行仪器控制。本文以串行通信为例．用LabVIEW构建仪器控制进行串行设备通信．在虚拟环境中使用VISA功能模块向串行设备读写数据，缩短了项目开发周期，提高了开发效率。 相似文献
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文章在既有的电磁场与波实验系统基础上,设计并实现了1套全新的用于实践性教学的电磁场与波智能实验系统。该系统不仅改进了既有实验系统在长期教学实践中体现出的种种不足,更扩展了该系统的实验接口,为以后该实验系统的功能扩展提供了有力保障。通过串口网络的引用,使得以前孤立的实验平台和教师PC有机地结合起来,使得计算机辅助教学和实践性教学这两大电磁场与波辅助教学手段的结合成为了可能,为未来电磁场与波实践性教学提供了新的方向和更加广阔的前景。 相似文献