一种基于模型的并发系统测试目的描述

提出了带约束事件的时序逻辑TLCE,用于描述系统运行中输入/输出事件之间的时序关系以及对事件参数的数据相关性约束.阐述了一种基于模型的并发系统测试框架,采用TLCE描述测试目的以引导测试用例生成.缓存一致性协议和会议协议的实例研究中所生成的测试用例集显著优于随机测试用例集.这说明了TLCE作为测试目的描述的有效性.

传值系统的互模拟与谓词等式系

National Natural Science Foundation of China; Public Administration and Civil Service Bureau of Macau SAR; Companhia de Telecomunicacoes de Macau S.A.R.L.; Macau SAR Government Tourist Office

模型检测:理论、方法与应用

National Natural Science Foundation of China; Public Administration and Civil Service Bureau of Macau SAR; Companhia de Telecomunicacoes de Macau S.A.R.L.; Macau SAR Government Tourist Office

面向传值进程的一阶模态逻辑的可判定性与模型检测

对于面向传值进程的Hennesssy-Milner逻辑的一阶扩充HML(FO)，给出了基于带赋值的符号迁移图的语义解释。证明了HML(FO)的子逻辑HML(FO^2)是满足性可判定的，并且讨论了判定的复杂性。最后给出了传值进程关于HML(FO^2)的模型检测的可判定性结果。

带复杂数据结构的模型检测工具

模型检测是近二十几年来最成功的自动验证技术之一,而模型检测工具的开发是将模型检测和实际相结合的关键.为了有效地对涉及到复杂数据类型的并发传值系统进行模型检测,总结了以扩展的带赋值符号迁移图和模态图分别作为并发系统和逻辑公式的语义模型来实现模型检测工具的工作,特别是将复杂数据结构引入传值进程定义语言和带赋值符号迁移图.同时结合实际例子说明模型检测工具的有效性.

谓词μ演算和模态图的语义一致性

模态图是谓词μ演算的一种有效的图形表示形式。证明了谓词μ演算和模态图的语义一致性，详细讨论了谓词μ演算公式、嵌套谓词等式系和模态图之间的关系，并给出了一种优化的从线性公式到嵌套谓词等式系的转换算法。

面向传值进程的谓词μ-演算与FO(HML)的完备推演系统

National Natural Science Foundation of China; Public Administration and Civil Service Bureau of Macau SAR; Companhia de Telecomunicacoes de Macau S.A.R.L.; Macau SAR Government Tourist Office

π-演算互模拟判定算法的优化和实现

National Natural Science Foundation of China; Public Administration and Civil Service Bureau of Macau SAR; Companhia de Telecomunicacoes de Macau S.A.R.L.; Macau SAR Government Tourist Office

带赋值符号迁移图的局部优化算法

National Natural Science Foundation of China; Public Administration and Civil Service Bureau of Macau SAR; Companhia de Telecomunicacoes de Macau S.A.R.L.; Macau SAR Government Tourist Office

嵌套谓词等式系与弱互模拟

National Natural Science Foundation of China; Public Administration and Civil Service Bureau of Macau SAR; Companhia de Telecomunicacoes de Macau S.A.R.L.; Macau SAR Government Tourist Office

移动进程的空间逻辑

提出了一个用于描述异步π-演算中移动进程的时态和空间性质的模态逻辑.该逻辑具有基于谓词变量的递归构造.建立了这一逻辑的语义理论,并证明了语义的单调性,从而保证了不动点的存在.还设计了一个算法来自动地检测移动进程是否具有用该逻辑公式所描述的性质,并证明了该算法的正确性.

高可靠软件研究:向信息技术的未来投资

National Natural Science Foundation of China; Public Administration and Civil Service Bureau of Macau SAR; Companhia de Telecomunicacoes de Macau S.A.R.L.; Macau SAR Government Tourist Office

a higher-order duration calculus and its completeness

National Natural Science Foundation of China; Public Administration and Civil Service Bureau of Macau SAR; Companhia de Telecomunicacoes de Macau S.A.R.L.; Macau SAR Government Tourist Office

The ways in which new public management ideas impact upon the administrative culture of 'street-level' bureaucrats and professionals working within Irish social policy

The conventional meaning of culture is ‘widely shared and strongly held values’ of a particular group or society (Bradley and Parker, 2006: 89). Culture is not a rigid concept; it can be influenced or altered by new ideas or forces. This research examines the ways in which one set of ideas in particular, that is, those associated with New Public Management, have impacted upon the administrative culture of 'street-level' bureaucrats and professionals within Irish social policy. Lipsky (1980: 3) defined 'street-level' bureaucrats as ‘public service workers who interact directly with citizens in the course of their jobs, and who have substantial discretion in the execution of their work’. Utilising the Competing Values Framework (CVF) in the analysis of eighty three semi-structured interviews with 'street-level' bureaucrats and professionals, an evaluation is made as to the impact of NPM ideas on both visible and invisible aspects of administrative culture. Overall, the influence of NPM is confined to superficial aspects of administrative culture such as; increased flexibility in working hours and to some degree job contracts; increased time commitment; and a customer service focus. However, the extent of these changes varies depending on policy sector and occupational group. Aspects of consensual and hierarchical cultures remain firmly in place. These coincide with features of developmental and market cultures. Contrary to the view that members of hierarchical and consensual culture would pose resistance to change, this research clearly illustrates that a very large appetite for change exists in the attitudes of 'street-level' bureaucrats and professionals within Irish social policy, with many of them suggesting changes that correspond to NPM ideas. This study demonstrates the relevance of employing the CVF model as it is clear that administrative culture is very much a dynamic system of competing and co-existing cultures.

Using evidence in policy: The importance of mediating beliefs and practices

This article argues that to understand the use of evidence in policy, we need to examine how meanings and practices in the civil service shape what is accepted as knowledge, and how differences between the beliefs and values of the academy and the polity can impede the flow and transfer of knowledge. It considers the importance of social context and shared meanings in legitimating knowledge. Who counts as legitimate knowledge providers has expanded and here the role of stakeholder groups and experiential knowledge is of particular interest. How hierarchy, anonymity, and generalist knowledge within the civil service mediate the use of evidence in policy is examined. The difference in values and ideology of the civil service and the academy has implications for how academic research is interpreted and used to formulate policy and for its position in knowledge power struggles. There are particular issues about the social science nature of evidence to inform rural policy being mediated in a government department more used to dealing with natural science knowledge. This article is based on participant observation carried out in a UK Department of Agriculture and Rural Development. © 2013 The Author. Sociologia Ruralis © 2013 European Society for Rural Sociology.