针对可执行程序恶意性难以判定的情况,提出一种基于证据推理的程序恶意性判定方法.首先,建立程序恶意性判定模型;然后,通过对程序进行反编译,抽取影响程序安全性的特征,建立程序行为集合;使用BP神经网络对模型进行训练得到各个行为的概...针对可执行程序恶意性难以判定的情况,提出一种基于证据推理的程序恶意性判定方法.首先,建立程序恶意性判定模型;然后,通过对程序进行反编译,抽取影响程序安全性的特征,建立程序行为集合;使用BP神经网络对模型进行训练得到各个行为的概率分配函数BPAF(basic probability assignment functions),并使用加权和形式的合成法则对程序行为进行合成;最后,实现对程序恶意性的判定.实验结果表明了该方法的有效性.展开更多
In 2010, the World Health Organization supported the Lebanese Ministry of Education and Higher Education to establish a network of 10 Health Promoting Schools (HPS). This study was undertaken to address the extent to ...In 2010, the World Health Organization supported the Lebanese Ministry of Education and Higher Education to establish a network of 10 Health Promoting Schools (HPS). This study was undertaken to address the extent to which the HPS model was able to produce changes in the risk behaviors of adolescents (Smoking, Drinking, and Drug Use) and prepare them to respond to evolving health challenges. A cross-sectional survey was carried out during 2011-2012 and compared Grade 6 - 9 students in HPS, and 10 other public and private schools. The Youth Risk Behavior Survey [1], and Carbon Monoxide measurements in adolescent breaths were used for data collection. Findings revealed that the current School Health Program failed to address issues of concern to adolescents with no significant differences in risk behaviors: smoking, alcohol and drug use. The HPS network needs reassessment to upgrade the outcomes of health education curricula. Expected learning outcomes and healthy practices must be designed to match students’ age, grade level, and developmental milestones.展开更多
This paper reflects the results of a short experiment conducted in parallel with a larger trial which aimed to test the assumption that ’consumption of feed by broiler chickens during periods of darkness is largely n...This paper reflects the results of a short experiment conducted in parallel with a larger trial which aimed to test the assumption that ’consumption of feed by broiler chickens during periods of darkness is largely negligible’. To that effect, on d 31, feeders of birds raised under intermittent lighting(IL), i.e. 1 h of light[1L]:3 h of dark(3D):1L:3D:1L:3D:1L:3D:2L:6D, were weighed at the onset and at the end of each period of darkness(or scotoperiod). Moreover, in order to compare the feeding behavior of IL birds with that of broilers raised under continuous lighting(CL, i.e, 18L:6D), their feeders were weighed in parallel and at the same time points. On d 31, feed intake of IL birds during scotoperiods represented 45% of their 24 h feed intake. Both CL and IL birds presented anticipatory feed intake prior to the long nocturnal period of darkness(6D), as well as higher feed intake right at the onset of lighting at 06:00. Feed intake of CL birds during the 6D nocturnal scotoperiod was negligible at around 2% of their total feed intake. Intermittent lighting birds exhibited excitement at the start of each hour-length scotoperiod and, within that time,ingested around 2.5 times the amount of feed ingested by CL birds. Although short, this study revealed several interesting observations which might be worth further exploring in a larger, lengthier, behaviorfocused experiment. Amongst other factors, it might be interesting to understand whether the high feed intake observed during scotoperiods for IL birds in reflective of the whole flock or rather a coping mechanism developed mainly by hierarchically lower-ranking birds to achieve their daily feed intakes requirements.展开更多
文摘针对可执行程序恶意性难以判定的情况,提出一种基于证据推理的程序恶意性判定方法.首先,建立程序恶意性判定模型;然后,通过对程序进行反编译,抽取影响程序安全性的特征,建立程序行为集合;使用BP神经网络对模型进行训练得到各个行为的概率分配函数BPAF(basic probability assignment functions),并使用加权和形式的合成法则对程序行为进行合成;最后,实现对程序恶意性的判定.实验结果表明了该方法的有效性.
文摘In 2010, the World Health Organization supported the Lebanese Ministry of Education and Higher Education to establish a network of 10 Health Promoting Schools (HPS). This study was undertaken to address the extent to which the HPS model was able to produce changes in the risk behaviors of adolescents (Smoking, Drinking, and Drug Use) and prepare them to respond to evolving health challenges. A cross-sectional survey was carried out during 2011-2012 and compared Grade 6 - 9 students in HPS, and 10 other public and private schools. The Youth Risk Behavior Survey [1], and Carbon Monoxide measurements in adolescent breaths were used for data collection. Findings revealed that the current School Health Program failed to address issues of concern to adolescents with no significant differences in risk behaviors: smoking, alcohol and drug use. The HPS network needs reassessment to upgrade the outcomes of health education curricula. Expected learning outcomes and healthy practices must be designed to match students’ age, grade level, and developmental milestones.
文摘This paper reflects the results of a short experiment conducted in parallel with a larger trial which aimed to test the assumption that ’consumption of feed by broiler chickens during periods of darkness is largely negligible’. To that effect, on d 31, feeders of birds raised under intermittent lighting(IL), i.e. 1 h of light[1L]:3 h of dark(3D):1L:3D:1L:3D:1L:3D:2L:6D, were weighed at the onset and at the end of each period of darkness(or scotoperiod). Moreover, in order to compare the feeding behavior of IL birds with that of broilers raised under continuous lighting(CL, i.e, 18L:6D), their feeders were weighed in parallel and at the same time points. On d 31, feed intake of IL birds during scotoperiods represented 45% of their 24 h feed intake. Both CL and IL birds presented anticipatory feed intake prior to the long nocturnal period of darkness(6D), as well as higher feed intake right at the onset of lighting at 06:00. Feed intake of CL birds during the 6D nocturnal scotoperiod was negligible at around 2% of their total feed intake. Intermittent lighting birds exhibited excitement at the start of each hour-length scotoperiod and, within that time,ingested around 2.5 times the amount of feed ingested by CL birds. Although short, this study revealed several interesting observations which might be worth further exploring in a larger, lengthier, behaviorfocused experiment. Amongst other factors, it might be interesting to understand whether the high feed intake observed during scotoperiods for IL birds in reflective of the whole flock or rather a coping mechanism developed mainly by hierarchically lower-ranking birds to achieve their daily feed intakes requirements.
