Weight of authorship evidence with multiple categories of stylometric features: A multinomial-based discrete model

This study empirically demonstrates the efficacy of a two-level Dirichlet-multinomial statistical model (the Multinomial system) for computing likelihood ratios (LR) for linguistic, textual evidence with multiple stylometric feature types with discrete values. The LRs are calculated separately for each feature type, namely, word, character and part of speech N-grams (N = 1,2,3), which are combined as overall LRs through logistic regression fusion. The Multinomial system’s performance is compared with that of a previously proposed system with the cosine distance (the Cosine system) using the same data (i.e., documents collated from 2160 authors). The experimental results show that: (1) the Multinomial system outperforms the Cosine system with the fused feature types by a log-LR cost of ca. 0.01 ～ 0.05 bits; and (2) the Multinomial system is more advantageous in performance with longer documents than the Cosine system. Although the Cosine system is more robust overall against the sampling variability arising from the number of authors included in the reference and calibration databases, the Multinomial system can achieve reasonable stability in performance; for example, the standard deviation value of the log-LR cost becomes lower than 0.01 (10 random samplings of authors for the reference and calibration databases) with 60 or more authors in each database.     

大学生就业性别刻板印象的Logistic回归研究

以青岛3所高校的毕业生为研究对象进行样本抽取与问卷调研,对获得的264份有效问卷进行数据处理,通过因子分析得到刻板印象的5个构面：女性职业刻板印象、男性职业刻板印象、女性特质刻板印象、男性特质刻板印象与行为刻板印象。在此基础上运用Logistic回归分析的方法研究刻板印象与毕业生就业情况之间的关系的结果表明：女性职业刻板印象对毕业生就业情况有显著性负向影响,且毕业生在该构面的测量值上每增加1分,“毕业生签订就业协议比未签订就业协议”的概率将减少7．96％;男性特质刻板印象构面对毕业生就业情况有显著性正向影响,且毕业生在男性特质刻板印象的测量值上每增加1分,“毕业生签订就业协议比未签订就业协议”的概率将增加15．36％。     

高校扩建后多元体育课程教学模式的构建

充分利用高校新校区的体育场馆和场地的资源,在多元体育教学思想和教学目标的指导下,结合学校的实际情况,把体育课程从课内向课外延伸、校内向校外拓展,形成课内外一体化、校内外相结合的多元体育课程教学模式。以便更好地培养学生对体育的兴趣与终身体育的意识和习惯,使其成为具备运动参与、运动技能、身体健康、心理健康和社会适应的高素质人才。     

气郁质个性特征研究

目的:探索气郁质的个性特征.方法:在临床流行病学调查的基础上,筛选气郁质24例及非气郁质26例,让其填写艾森克个性问卷(EPQ),以气郁质(0=否,1=是)为因变量,以性别及EPQ的4个维度为自变量进行二项分类Logistic回归.结果:仅EPQ的N维度进入回归方程.结论:气郁质者具有EPQ的N维度高分者的个性特征.     

Loess:: a nonparametric, graphical tool for depicting relationships between variables

Loess is a powerful but simple strategy for fitting smooth curves to empirical data. The term “loess” is an acronym for “local regression” and the entire procedure is a fairly direct generalization of traditional least-squares methods for data analysis. Loess is nonparametric in the sense that the fitting technique does not require an a priori specification of the relationship between the dependent and independent variables. Although it is used most frequently as a scatterplot smoother, loess can be generalized very easily to multivariate data; there are also inferential procedures for confidence intervals and other statistical tests. For all of these reasons, loess is a useful tool for data exploration and analysis in the social sciences. And, loess should be particularly helpful in the field of elections and voting behavior because theories often lead to expectations of nonlinear empirical relationships even though prior substantive considerations provide very little guidance about precise functional forms.     

高校校园多发性案件的成因和对策

盗窃、诈骗和伤害案件是高校校园内发案率最高的三类案件,它们具有三大特点:发案的连续性、发案时间和地点上的固定性以及案件产生不良后果的破坏性。这些案件之所以频繁在校园内发生,主要是由于学生的防范意识比较差、容易受到欺骗和蒙蔽、学校与社会的界限日益模糊、高校防范案件发生的措施尚不完善等。针对这些案件的发生规律和成因,高校可以采取大力宣传安全知识、加大对保卫部门的投入、增设岗亭和巡逻队、实行进出宿舍楼登记制度以及鼓励群防群治等措施来防范和处理。     

EXCEL在交通事故分析中的应用

交通安全问题已引起了世界各国的重视,每个国家都在寻求和探索降低交通事故发生率的良策。我国是一个发展中国家,在相当长的一段时间内还会面临着严重的交通安全问题。EXCEL是一种简便、易操作的计算机软件,可以利用EXCEL的数据分析功能,求出道路交通事故中某些推测数据与多因素之间的比例关系,对道路交通事故分析有所帮助。     

An empirical investigation of determinants of corporate social performance using multi-dimensional panel data analysis

An assessment of the determinants of corporate social performance (CSP) in emerging economies is still too fractured. This article contributes to general management literature by developing an empirical model based on the existing theoretical models rooted in neo-institutional theory (legitimacy approach), stakeholders management theory, agency theory, the resource-based view of the firm, slack resources argument, and managerial control theory. A robust, multidimensional, unweighted disclosure index was used to measure CSP. This article provides a methodologically and empirically more rigorous assessment of determinants of CSP compared to previous studies by performing panel data regression analysis on 307 firms for 10 years. The results reveal that the presence of a legal framework, board attributes (board size, board diversity, board interlocking), women on board, ownership pattern, financial performance, firm attributes (size, age, leverage), and industry characteristics affect CSP significantly. These findings provide very important clues to design pragmatic strategies to improve CSP.     

Repeat Coronary Artery Dissection in Pregnancy: A Case Report and Review of the Literature

Non‐atherosclerotic spontaneous coronary artery dissection (NA‐SCAD) is a rare cause of morbidity and mortality with a propensity for young, healthy, and often peripartum women. NA‐SCAD etiology is poorly understood, with possible hormonal and hereditary mechanisms. Current treatment strategies range from conservative management (often showing resolution on angiographic follow‐up) to invasive angiographic procedures. Rarely, NA‐SCAD has recurred in another coronary artery, ranging hours to years later. We report NA‐SCAD of the right coronary artery (RCA) in a 30‐year old, 3‐month postpartum female with an additional autopsy finding of remote myocardial infarction (MI) in the left anterior descending (LAD) coronary artery territory. The remote MI is consistent with prior NA‐SCAD of the LAD and, given the medical history, may have occurred in the peripartum period of the decedent first pregnancy 3 years earlier. As such, to the best of our knowledge, this may represent the first reported case of NA‐SCAD recurrence in a subsequent pregnancy.