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1.
以材料试验机数据采集及控制系统为实例,介绍了PC机与AVR单片机串行通信的硬件实现方法。详细说明了在Delphi环境下,TComm串行通信组件的使用和软件编程方法。阐述了在AVR Studio+AVR GCC编程环境下,ATmega16单片机串口通信的软件编程。实际应用表明,该方案稳定、可靠、易于实现,具有很好的工程实用价值。  相似文献   

2.
基于S7—300PLC和组态王软件的汽车生产线控制系统   总被引:1,自引:0,他引:1  
介绍基于S7—300PLC和组态王软件的汽车生产线控制系统主要组成,重点是PLC系统硬件配置及其组态,监控系统主要配置和监控功能实现方法。  相似文献   

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本文就江苏油田真武油管修复站的实际情况给出一个利用OMRON PLC和King View实现的油管试压操作监控系统。详细阐述了系统的结构、硬件设计、通讯方式的构成以及软件的设计思想。该系统已经投入运行,应用效果良好。  相似文献   

5.
Delphi是一门很好的可视化编程工具,为更好的让一些初级入门的开发人员了解这门技术,从最基础的工程文件的组成、窗体单元文件代码内各个部分的组成讲起,最后附带一个总结性实例,让初级开发人员更深入地学习了解Delphi开发工具。  相似文献   

6.
针对熔纺螺杆挤出机温度工艺参数分散,无数据记录及曲线显示等问题,设计了一套基于组态王的温度监控系统;实现了螺杆挤出机温度的集中管理,并为产品质量波动分析提供了依据。提高了企业管理水平。  相似文献   

7.
通过SDH通信模式,实现网络有效管理、实时业务监控、动态网络维护、不同厂商设备间的互通等多项功能,能大大提高网络资源利用率、降低管理及维护费用、实现灵活可靠和高效的网络运行与维护  相似文献   

8.
针对面向对象系统中对象的交互分为调入界面和调出界面,阐述了VB调出界面的2种通信机制,即事件和回调,并对二者进行了详细比较,分析了它们的特点和适用对象,进而通过在基于异步调用的网络监控系统中的应用实例,体现了基于回调机制的对象通信技术对于设计和开发复杂的面向对象系统的重要意义。  相似文献   

9.
随着社会及经济的不断发展,计算机及信息技术也被广泛应用到人们的生产和生活过程中.计算机通信发展为互联网和信息技术的发展打下了坚实基础,它可以高速处理和传输信息、实现资源共享,使人们的交流打破空间的限制,使人们的生产生活方式得到改变.本文笔者就对计算机通信和网络技术应用的必要性和应用类型进行分析,以期计算机通信及网络得到...  相似文献   

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随着信息化的不断深化,无线通信技术在不同的领域中获得了广泛的使用。由于无线通信技术的发展,频带资源显得越来越紧缺,传统理念下的建设已经不能满足大众对高通信速率的发展需要。无线电在传输过程中,可以分为短波、超短波、微波等方式。天线与载体之间的电磁作用比较复杂,天线品种繁多并且不同的类型存在自身独有的价值,需要结合实际,分析天线相关特性和应用,为以后的可持续发展提供良好的基础准备。  相似文献   

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随着房产交易市场的日益活跃,对房地产经纪机构的行业管理已经成为政府管理的重点工作之一。现有管理存在着手段落后、数据分析困难、信息不对称等问题。运用Delphi 7.0开发了房地产经纪机构与管理部门信息一体化系统,该系统在石家庄房产管理部门和房地产经纪机构进行了应用,整体运行情况良好。  相似文献   

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WITSML的广泛应用增加了企业对实时数据的依赖性,一旦数据传输出现故障,将可能影响正常施工,因此,WITSML服务系统的稳定性尤为重要,可采取措施对该项服务进行考核,提高服务质量。国内石油企业绝大多数尚未应用该标准,应尽快加入该行列,以便在企业范围内实现井场信息的共享,消除信息孤岛,减少重复开发,提高信息应用效率。  相似文献   

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Evidence of a decline in public trust associated with food risk governance over recent years has called into question the appropriateness of the current dominant risk analysis framework. Within the EU-funded SAFE FOODS project a novel risk analysis framework has been developed that attempts to address potential shortcomings by increasing stakeholder (including consumer) input, improving transparency, and formally incorporating benefit and non-health aspects into the analysis. To assess the viability of this novel framework, the views of food risk experts from the EU and beyond were sought using a distributed online questionnaire process called Delphi. In this paper the main results of this survey are described, revealing varying levels of support for the key innovations of the novel framework. Implications of our results for the new and old frameworks, for the future of risk analysis, and for the policy community more widely, are discussed.  相似文献   

15.
企业动态能力的理论架构与构成要素   总被引:20,自引:0,他引:20  
从20世纪90年代后期起,"动态能力观"成为了学术界探讨的热点课题。组织经济学家、战略管理学家和组织理论学家们站在各自不同的立场上对这一问题与现象的研究,可谓百花齐放、百家争鸣。不同的学术流派在不同的范式基础上阐述动态能力的内涵、理论架构和构成要素,极大地促进了动态能力观的概念发展、理论积累和实践创新。本文归纳了动态能力的理论架构.并用模糊聚类分析法对过去10年间有关动态能力观研究成果进行了理论分维。揭示出动态能力的构成要素。  相似文献   

16.
Makadok has recently developed a mathematical model aimed at synthesizing the resource‐based and dynamic‐capabilities views of the rent creation process. One unstated implicit assumption in that model is that each bidding firm in the resource market is ignorant not only of the content of rival firms' private information, but also of the quality (i.e., the noisiness or reliability) of that information. Consequently, that model does not qualify as a rational‐expectations Bayesian Nash equilibrium—a fact that both generates questionable results (e.g., the possibility of negative expected profits) and impedes any effort to extend the model. The rational‐expectations critique in economics points out that this sort of nonrational assumption becomes increasingly implausible as economic actors learn more about each other's patterns over time through repeated interactions (in this case, as bidders repeatedly compete against each other to buy different resources over time). So, over the long run, the only truly stable, viable, and robust assumption would be rational‐expectations behavior. The primary purpose of this paper is to put Makadok's model on the firmer methodological footing of rational‐expectations Bayesian Nash equilibrium, so that it will no longer generate questionable results, and so that future researchers can more easily extend it. The secondary purpose of this paper is to demonstrate that this shift to rational‐expectations assumptions has little substantive impact on the testable hypotheses generated by Makadok's original model. Copyright © 2002 John Wiley & Sons, Ltd.  相似文献   

17.
Auto CAD以它卓越的图形功能广泛用于绘制各种工程设计及施工图纸。但西文Auto CAD不能输入汉字 ,而汉化的 Auto CAD也只适合输入少量、字型单一的汉字 ,不能满足一般图纸中输入各种汉字特别是数据表格的需要。本文介绍了 Auto CAD和 Word中的几种图形格式及文件的相互调用方法 ,给出了在 Windows环境下 ,通过 Word与Auto CAD的数据交换 ,利用中文 Word对 Auto CAD中的工程图纸进行输出的方法。该方法简便易行 ,仅使用通用软件又不需任何二次开发 ,因此适合于中小企业特别是广大的个人 Auto CAD用户。  相似文献   

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Research Summary : The attention‐based view (ABV) has highlighted the role of organizational attention in strategic decision making and adaptation. The tendency to view communication channels as “pipes and prisms” for information processing has, however, limited its ability to address strategic change. We propose a broader role for communication as a process by which actors can attend to and engage with organizational and environmental issues and initiatives and argue that such a view can significantly advance understanding of strategic change. On this basis, we offer suggestions for future research on communication practices, vocabularies, rhetorical tactics, and talk and text in shaping organizational attention in strategic change. We also maintain that this enhanced view of the ABV can help advance research on dynamic capabilities, strategy processes, strategy‐as‐practice, and behavioral strategy. Managerial Summary : To further enhance our capabilities to manage strategic change and renewal processes in organizations, we need a better understanding of how to manage organizational attention. In this article, we highlight the importance of understanding the role of communication and discuss the use of different communication practices, vocabularies, rhetorical tactics, and talk and text as possible levers that can be used to dynamically shape organizational attention. We call for further research to advance the understanding of how these levers can be used to influence the ways in which different sets of strategic issues, initiatives, and action alternatives are handled. We believe that such an enhanced view of organizational attention can enable the development of new, improved strategy practices to manage strategic change and renewal processes.  相似文献   

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This study uses network data of worker behavior to analyze changes in worker communication patterns during the first three years post‐acquisition. The findings suggest that new communication routines develop slowly and are not entirely enduring even when a transformative event, such as an acquisition, occurs. Communication across firms initially increases as workers change their routines. However, over time this communication peaks and then falls as workers develop common ground. Communication across firms was greater when workers' tasks were interdependent. Overall, this study demonstrates that communication routines persist even after an organizationally transforming event. It illustrates the importance of both the formal and informal organization as well as the promise of using social network methods and communication log data to study social phenomena of strategic interest. Copyright © 2011 John Wiley & Sons, Ltd.  相似文献   

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