基于决策树分类的HTTP隧道检测方法

HTTP隧道是各种木马和间谍软件进行网络通信的主要途径,严重威胁了网络安全。比较有效的算法主要是统计指印方法,统计指印采用的特征较少,对训练集的依赖程度较高,算法的稳定性较差。决策树分类算法提取了网络数据流更多的有效特征。使用决策树分类算法对HTTP隧道数据进行了检测,通过实验结果对比,决策树算法的稳定性更好,精确度和效率更高。     

NX运动仿真在“机械设计基础”课件制作中的应用

介绍"机械设计基础"课程中,使用NX高端集成软件建立机构模型,并使用仿真模块模拟机构、分析机构的运动,作为课件在课堂演示的一些经验方法。同时校验机构任意位置点的运动参数供教师参考。     

学术自由视域中的高校信息公开决定权

高校信息公开决定权的实质是在法律层面对高校自主权的进一步强化,其目的在于保障高校自治。高校信息公开决定权存在于高校工作的不同领域,但其行使应以学术自由为界限。为保障权力合法、有效行使,应对《高校信息公开办法》第十条第四项进行修正。     

决策树ID3算法的改进及其应用

分析了分类规则挖掘方法中决策树的原理,提出了ID3算法的改进算法,并将优化改进后的算法应用到营销决策支持系统中。     

Antecedents predicting health information seeking: A systematic review and meta-analysis

Numerous reasons regarding why people should seek health information exist, but empirical evidence has indicated that factors that influence health information seeking (HIS) differ according to the context. To make suggestions based on explicit and judicious use of the best available evidence, a meta-analytic review was undertaken. In the present review, 16 electronic databases were searched up to July 2019, empirical results of 71 primary studies that met inclusion criteria were coded, and seven antecedents that commonly affect HIS behavior were examined. We obtained 204 correlation coefficients from 90 independent subsets with a total of 74,171 respondents. The results indicated that self-efficacy (ES_r = 0.254), health literacy (ES_r = 0.222), availability (ES_r = 0.412), credibility (ES_r = 0.308), emotional response (ES_r = 0.090), and subjective norms (ES_r = 0.443) substantially influenced individuals’ HIS, and subjective norms was the most influential factor. Individuals’ behavior usually aligns with the opinions of other critical individuals in their lives, and this phenomenon was observed in the present study of the HIS context. In addition, eight variables were examined as potential moderators (i.e., roles of samples, gender, average age, topic, information channel, type of publication, data collecting method, and sampling method); statistically significant effects on some of the aggregated correlations were noted for all of these variables.     

我国体育产业与健康产业融合发展路径研究

随着人们健康观念的转变,越来越多的人开始注重自身的健康,并逐渐意识到体育运动对于促进自身身心健康的重要性,这在很大程度上促进了健康产业与体育产业的高速发展,同时也为体育产业与健康产业的融合发展提供了良好的条件。本文首先对当前我国体育与健康产业发展的总体状况进行分析和研究,然后以此为依据,提出相应的融合发展策略,即拓展产业链融合空间、加大产业创新力度及引入新型技术,从而为我国体育与健康产业的可持续发展提供一定的理论参考。     

通过钢琴打击乐化的处理拓展钢琴音色——以巴托克《第一钢琴协奏曲》第一乐章钢琴声部为例

贝拉·巴托克是将钢琴打击乐化处理发展到顶峰的代表性作曲家,他的《第一钢琴协奏曲》的曲式结构、主题(动机)、调式调性、和声、节奏等要素,是其音乐构成的技术特点,也是他对钢琴打击乐化处理的方法,以及这种处理方法在乐曲中扮演的角色。总结演奏者如何运用更为合理的演奏方法从而更加准确地诠释作品要点,具有启发意义。     

Frequent sit-to-stand transitions and several short standing periods measured by hip-worn accelerometer are associated with smaller waist circumference among adults

This cross-sectional study analysed the association of sedentary behaviour (SB) and standing with waist circumference. Finnish adults aged 30-75 years from a sub-sample of population-based Health 2011 Study used a hip-worn tri-axial accelerometer (Hookie AM20, Traxmeet, Ltd, Espoo, Finland) for seven days. Those 1405 participants (57% women) who used accelerometer at least four days, minimum of 10 hours/day, were included. SB and standing were analysed in 6s epochs using validated algorithm. Daily total time, daily number and accumulated time from bouts (30s–5min,30s–10min,30s–15min,30s 30min,>5min,>10min,>15min, >30min) as well as daily number of sit-to-stand transitions were determined. Waist circumference (cm) was measured in standardized way. Participants’ mean age was 52 years (SD 12.2). Mean waist circumference was 97cm (SD 12.3) in men and 87cm (SD 12.7) in women. According to multivariable stepwise linear regression analysis, sit-to-stand transitions [standardised regression coefficient (β)= -0.14, 95%CI -0.20 to -0.09], standing bouts of 30s–5min (β= -0.21, 95%CI -0.26 to -0.15) and number of 30s-30min SB bouts (β=0.12, 95%CI 0.06 to 0.17) were most strongly associated with waist circumference. Besides assessing total SB time, future studies should assess also different bout lengths of SB and sit-to-stand transitions and standing times should be assessed separately.     

Framing citizenship: from assumptions to possibilities in health and physical education

Within the Australian context physical education (PE) and more recently health and physical education (HPE) have long been ascribed utilitarian value for producing healthy citizens. Whilst this has not been a linear progression over time, traces from the past do inform current assumptions about this utilitarian role. Of consequence are historical contingencies and responses to societal problems around health-related conduct and capabilities of the nations’ citizens. In this paper a genealogical approach is adopted to explore discourses and power relations that have framed the contribution of PE and HPE in shaping students for healthy citizenship. Disciplinary technologies associated with military-style physical training, civilising technologies of game play and responsibilising governmental technologies of contemporary policies will be explored. I conclude in arguing that if HPE is to prepare all students for equitable, inclusive citizenship what is required is the adoption of curricula and pedagogies that counteract hegemonic notions of individual responsibility for healthy citizenship.     

Did London 2012 deliver a sports participation legacy?

Despite the increasing academic interest in the analysis of the Olympic legacy, there is a relative knowledge gap as far as sports participation legacy is concerned. The authors bridge this gap by analysing the short-term sports participation legacy of the London 2012 Olympic and Paralympic Games on the adult population in England. By using data from the Active People Survey and considering different sports participation variables and the effect of the economic climate, results demonstrate a positive association with participation from hosting the Games. Participation rates were adjusted to take into account seasonality and changes in the gross domestic product (GDP), accounting in this way for the effect of the recent economic recession. The biggest effect was observed in relation to frequent participation (at least three times per week for at least 30 min) in the year immediately after the Games. In 2014, the sports participation rates fell relative to 2013 but remained higher than pre-Olympic levels. The sport participation legacy of the Olympic Games appeared to have significant differences between socio-demographic groups.