最大可能地降低设备风险是防止电力系统发生事故的有效途径。从分析设备风险的影响因素的角度出发,综合设备重要度和设备隐患对设备风险的影响,定义了设备风险影响度,并提出了设备重要度指标和设备隐患指标,建立了设备风险影响度计算指...最大可能地降低设备风险是防止电力系统发生事故的有效途径。从分析设备风险的影响因素的角度出发,综合设备重要度和设备隐患对设备风险的影响,定义了设备风险影响度,并提出了设备重要度指标和设备隐患指标,建立了设备风险影响度计算指标体系。在该体系的基础上,利用设备相对重要度矩阵和设备相对隐患矩阵构建设备风险影响度计算模型以获取设备的风险影响度,以辨识出对电网可靠、稳定和安全运行具有巨大影响的高风险设备,从而有针对性地对高风险设备进行重点关注,对降低电力系统的总体风险水平具有重要意义。最后,将该方法应用于山西晋城220 k V东沟变电站中主要设备的风险影响度计算。仿真结果验证了所提方法的有效性和可行性,为进一步挖掘高风险设备提供了数据支撑。展开更多
Research in behavioral finance is comparatively less in India, when compared to other foreign countries. Globalization of financial markets has been increasing the retail investors＇ community over the past two decade...Research in behavioral finance is comparatively less in India, when compared to other foreign countries. Globalization of financial markets has been increasing the retail investors＇ community over the past two decades by providing a wide variety of market and investment options. However, it makes much more complex in their investment decisions process. This paper aims at identifying the factors influencing the retail investor＇s attitude. This paper develops a modified questionnaire. The average value of the five top highly influential factors according to the sample retail investors＇ were Investors＇ tolerance for risk, strength of the Indian economy, media focus on the stock market, political stability and finally government policy towards business. Four factors were given lowest priority or which had low influence on the attitude of the retail investors investing in equity stocks. Stories of successful investors was considered to be the lowest influencing factors among the four, get rich quick philosophy, information available on internet, cost cutting by companies.展开更多
Human activity has been shown to influence how animals assess the risk of predation, but we know little about the spatial scale of such impacts. We quantified how vigilance and flight behavior in mule deer Odocoileus ...Human activity has been shown to influence how animals assess the risk of predation, but we know little about the spatial scale of such impacts. We quantified how vigilance and flight behavior in mule deer Odocoileus hemionus varied with distance from an area of concentrated human activity--a subalpine field station. An observer walked trails at various distances away from the station looking for deer. Upon encounter, the observer walked toward the focal animal and noted the distance at which it alerted and directed its attention to the approaching human （Alert Distance; AD）, and the distance at which it fled （Flight Initiation Distance;. FID）. AD and FID both increased nonlinearly with distance from the center of the field station, reaching pla- teaus around 250 m and 750 m, respectively. Deer also tended to flee by stotting or running, rather than by walking, when far from the station but they walked away when near the station. These results indicate that deer perceive lower risk near a focused area of human activity, and that vigilance and flight behaviors respond on somewhat different spatial scales. The concept of a spatial ＂human footprint＂ on behavior may be useful for understanding how human activities affect wildlife展开更多
文摘最大可能地降低设备风险是防止电力系统发生事故的有效途径。从分析设备风险的影响因素的角度出发,综合设备重要度和设备隐患对设备风险的影响,定义了设备风险影响度,并提出了设备重要度指标和设备隐患指标,建立了设备风险影响度计算指标体系。在该体系的基础上,利用设备相对重要度矩阵和设备相对隐患矩阵构建设备风险影响度计算模型以获取设备的风险影响度,以辨识出对电网可靠、稳定和安全运行具有巨大影响的高风险设备,从而有针对性地对高风险设备进行重点关注,对降低电力系统的总体风险水平具有重要意义。最后,将该方法应用于山西晋城220 k V东沟变电站中主要设备的风险影响度计算。仿真结果验证了所提方法的有效性和可行性,为进一步挖掘高风险设备提供了数据支撑。
基金supported by Science and technology fund of China General Administration of Civil Aviation ( No: MY0421808)National Natural Science Foundation of China ( No: 60832011 )Tianjin scientific and technological research program ( No: 06YFGZGX00700)
文摘Research in behavioral finance is comparatively less in India, when compared to other foreign countries. Globalization of financial markets has been increasing the retail investors＇ community over the past two decades by providing a wide variety of market and investment options. However, it makes much more complex in their investment decisions process. This paper aims at identifying the factors influencing the retail investor＇s attitude. This paper develops a modified questionnaire. The average value of the five top highly influential factors according to the sample retail investors＇ were Investors＇ tolerance for risk, strength of the Indian economy, media focus on the stock market, political stability and finally government policy towards business. Four factors were given lowest priority or which had low influence on the attitude of the retail investors investing in equity stocks. Stories of successful investors was considered to be the lowest influencing factors among the four, get rich quick philosophy, information available on internet, cost cutting by companies.
文摘Human activity has been shown to influence how animals assess the risk of predation, but we know little about the spatial scale of such impacts. We quantified how vigilance and flight behavior in mule deer Odocoileus hemionus varied with distance from an area of concentrated human activity--a subalpine field station. An observer walked trails at various distances away from the station looking for deer. Upon encounter, the observer walked toward the focal animal and noted the distance at which it alerted and directed its attention to the approaching human （Alert Distance; AD）, and the distance at which it fled （Flight Initiation Distance;. FID）. AD and FID both increased nonlinearly with distance from the center of the field station, reaching pla- teaus around 250 m and 750 m, respectively. Deer also tended to flee by stotting or running, rather than by walking, when far from the station but they walked away when near the station. These results indicate that deer perceive lower risk near a focused area of human activity, and that vigilance and flight behaviors respond on somewhat different spatial scales. The concept of a spatial ＂human footprint＂ on behavior may be useful for understanding how human activities affect wildlife
