Recent studies have shown that the perceived lack of security is a major obstacle to the wider acceptance of e-commerce. To overcome this barrier, businesses need to implement comprehensive consumer protection systems...Recent studies have shown that the perceived lack of security is a major obstacle to the wider acceptance of e-commerce. To overcome this barrier, businesses need to implement comprehensive consumer protection systems that protect consumers during every stage of the purchasing process. This paper used the consumer behaviour model as the basis for analysing risks in Bussiness-to-Consumer (B2C) transactions. Four categories of risks were identified: information, agreement, payment and delivery risk. By combining these risk categories with the three dimensions of management, technology and legislation, a comprehensive B2C consumer protection framework is developed.展开更多
微机继电保护装置在变电站复杂的电磁干扰环境下,内部的电子元器件将受到干扰使其不能正常运行,甚至影响到保护的正确动作,对电网的安全稳定运行构成威胁.结合白河变500 k VⅠ母BP-2B母差保护定期检查工作中发现的缺陷,采用对称分量法...微机继电保护装置在变电站复杂的电磁干扰环境下,内部的电子元器件将受到干扰使其不能正常运行,甚至影响到保护的正确动作,对电网的安全稳定运行构成威胁.结合白河变500 k VⅠ母BP-2B母差保护定期检查工作中发现的缺陷,采用对称分量法对采样结果进行分析,确认故障原因是无法采集到零序电流,对可能的故障点进行排查,最终定位故障插件并提出了诊断方法和预防措施.展开更多
文摘Recent studies have shown that the perceived lack of security is a major obstacle to the wider acceptance of e-commerce. To overcome this barrier, businesses need to implement comprehensive consumer protection systems that protect consumers during every stage of the purchasing process. This paper used the consumer behaviour model as the basis for analysing risks in Bussiness-to-Consumer (B2C) transactions. Four categories of risks were identified: information, agreement, payment and delivery risk. By combining these risk categories with the three dimensions of management, technology and legislation, a comprehensive B2C consumer protection framework is developed.
文摘微机继电保护装置在变电站复杂的电磁干扰环境下,内部的电子元器件将受到干扰使其不能正常运行,甚至影响到保护的正确动作,对电网的安全稳定运行构成威胁.结合白河变500 k VⅠ母BP-2B母差保护定期检查工作中发现的缺陷,采用对称分量法对采样结果进行分析,确认故障原因是无法采集到零序电流,对可能的故障点进行排查,最终定位故障插件并提出了诊断方法和预防措施.
