目的分析2021—2022年北京市60台牙科口外X射线设备的验收检测结果,了解北京市临床新安装牙科口外X射线设备主要类型和各生产厂家安装调试整机水平,总结检测中发现的问题,提高设备检测水平。方法按照卫生行业标准《医用X射线诊断设备质...目的分析2021—2022年北京市60台牙科口外X射线设备的验收检测结果,了解北京市临床新安装牙科口外X射线设备主要类型和各生产厂家安装调试整机水平,总结检测中发现的问题,提高设备检测水平。方法按照卫生行业标准《医用X射线诊断设备质量控制检测规范》(WS 76—2020)进行现场验收检测和评价。结果60台牙科口外X射线设备总体合格率为98.33%;同一台口外机,全景扫描与头颅摄影两种模式时,在相同管电压条件下,两种模式管电压指示的偏离最大相差5.5%,有用线束半值层最大相差1.22 mm Al,管电压指示的偏离和有用线束半值层两个指标相应的检测结果并不一致;两种模式时,曝光时间指示的偏离检测结果也存在一定的差异,最大相差75.51%。结论加强设备出厂设备质量控制和安装调试环节,新安装设备的性能基本是有保障的。检测中,保证剂量仪探头的有效测量点位于主射线束中心轴上非常重要。展开更多
软件安全性测试是保证软件性能的主要手段.在软件开发生命周期SDLC(Software Development Lifecycle)中进行安全测试,其投入要远远小于项目完成后进行漏洞修补.本文着重讨论了在SDLC过程中单元测试、集成测试以及验收测试的优缺点和适...软件安全性测试是保证软件性能的主要手段.在软件开发生命周期SDLC(Software Development Lifecycle)中进行安全测试,其投入要远远小于项目完成后进行漏洞修补.本文着重讨论了在SDLC过程中单元测试、集成测试以及验收测试的优缺点和适用情况.接着阐述了软件安全性测试对测试人员的要求和安全性测试的实施方法.最后文章以一个SQL注入实例来具体说明安全性测试的实施过程.展开更多
Regardless of which (model-centric or code-centric) development process is adopted, industrial software production ultimately and necessarily requires the delivery of an executable implementation. It is generally acce...Regardless of which (model-centric or code-centric) development process is adopted, industrial software production ultimately and necessarily requires the delivery of an executable implementation. It is generally accepted that the quality of such an implementation is of utmost importance. Yet current verification techniques, including software testing, remain problematic. In this paper, we focus on acceptance testing, that is, on the validation of the actual behavior of the implementation under test against the requirements of stakeholder(s). This task must be as objective and automated as possible. Our first goal is to review existing code-based and model-based tools for testing in light of what such an objective and automated approach to acceptance testing entails. Our contention is that the difficulties we identify originate mainly in a lack of traceability between a testable model of the requirements of the stakeholder(s) and the test cases used to validate these requirements. We then investigate whether such traceability is addressed in other relevant specification-based approaches.展开更多
目的开展注射泵设备进院验收检测,发现注射泵验收中存在的问题并提出相应解决方法,从而确保设备安全可靠的进入临床使用环节。方法利用液流分析仪检测A、B两种型号注射泵的流速、阻塞压力和各项报警功能,并对检测数据进行对比分析。结...目的开展注射泵设备进院验收检测,发现注射泵验收中存在的问题并提出相应解决方法,从而确保设备安全可靠的进入临床使用环节。方法利用液流分析仪检测A、B两种型号注射泵的流速、阻塞压力和各项报警功能,并对检测数据进行对比分析。结果两种型号注射泵:5 m L/h流速的误差分别为-4.4%和-3.4%;30 m L/h流速误差为1.4%和0.4%,均符合国家计量要求。检测发现,两种型号注射泵阻塞压阈值设置不同,其报警形式等均有区别。结论新设备验收检测工作是医院对设备出厂状态进行摸底的主要途径,具有无法再现性,其检测数据是该设备后期维护、维修、状态评价和质量控制跟踪的重要参考标准。展开更多
文摘目的分析2021—2022年北京市60台牙科口外X射线设备的验收检测结果,了解北京市临床新安装牙科口外X射线设备主要类型和各生产厂家安装调试整机水平,总结检测中发现的问题,提高设备检测水平。方法按照卫生行业标准《医用X射线诊断设备质量控制检测规范》(WS 76—2020)进行现场验收检测和评价。结果60台牙科口外X射线设备总体合格率为98.33%;同一台口外机,全景扫描与头颅摄影两种模式时,在相同管电压条件下,两种模式管电压指示的偏离最大相差5.5%,有用线束半值层最大相差1.22 mm Al,管电压指示的偏离和有用线束半值层两个指标相应的检测结果并不一致;两种模式时,曝光时间指示的偏离检测结果也存在一定的差异,最大相差75.51%。结论加强设备出厂设备质量控制和安装调试环节,新安装设备的性能基本是有保障的。检测中,保证剂量仪探头的有效测量点位于主射线束中心轴上非常重要。
文摘软件安全性测试是保证软件性能的主要手段.在软件开发生命周期SDLC(Software Development Lifecycle)中进行安全测试,其投入要远远小于项目完成后进行漏洞修补.本文着重讨论了在SDLC过程中单元测试、集成测试以及验收测试的优缺点和适用情况.接着阐述了软件安全性测试对测试人员的要求和安全性测试的实施方法.最后文章以一个SQL注入实例来具体说明安全性测试的实施过程.
文摘Regardless of which (model-centric or code-centric) development process is adopted, industrial software production ultimately and necessarily requires the delivery of an executable implementation. It is generally accepted that the quality of such an implementation is of utmost importance. Yet current verification techniques, including software testing, remain problematic. In this paper, we focus on acceptance testing, that is, on the validation of the actual behavior of the implementation under test against the requirements of stakeholder(s). This task must be as objective and automated as possible. Our first goal is to review existing code-based and model-based tools for testing in light of what such an objective and automated approach to acceptance testing entails. Our contention is that the difficulties we identify originate mainly in a lack of traceability between a testable model of the requirements of the stakeholder(s) and the test cases used to validate these requirements. We then investigate whether such traceability is addressed in other relevant specification-based approaches.
文摘目的开展注射泵设备进院验收检测,发现注射泵验收中存在的问题并提出相应解决方法,从而确保设备安全可靠的进入临床使用环节。方法利用液流分析仪检测A、B两种型号注射泵的流速、阻塞压力和各项报警功能,并对检测数据进行对比分析。结果两种型号注射泵:5 m L/h流速的误差分别为-4.4%和-3.4%;30 m L/h流速误差为1.4%和0.4%,均符合国家计量要求。检测发现,两种型号注射泵阻塞压阈值设置不同,其报警形式等均有区别。结论新设备验收检测工作是医院对设备出厂状态进行摸底的主要途径,具有无法再现性,其检测数据是该设备后期维护、维修、状态评价和质量控制跟踪的重要参考标准。
