An algorithm for panel ANOVA with grouped data

In this paper, we present an algorithm suitable for analysing the variance of panel data when some observations are either given in grouped form or are missed. The analysis is carried out from the perspective of ANOVA panel data models with general errors. The classification intervals of the grouped observations may vary from one to another, thus the missing observations are in fact a particular case of grouping. The proposed Algorithm (1) estimates the parameters of the panel data models; (2) evaluates the covariance matrices of the asymptotic distribution of the time-dependent parameters assuming that the number of time periods, T, is fixed and the number of individuals, N, tends to infinity and similarly, of the individual parameters when T → ∞ and N is fixed; and, finally, (3) uses these asymptotic covariance matrix estimations to analyse the variance of the panel data.     

控制爆破技术在双曲线冷却塔爆破拆除中的应用

近年来,电厂针对双曲线型冷却塔的爆破拆除例子较多,但在爆破技术和安全措施方面仍有待完善。以2座100m高双曲线型钢筋混凝土冷却塔定向控制爆破拆除为例,在分析冷却塔结构特点的基础上,从倒塌方向、爆破缺口、炮孔布置、药量确定、起爆网路等方面介绍了控制爆破时采取的技术方案和预处理措施;并针对控制爆破过程中可能产生的爆破有害效应制定了针对性的安全措施,如飞石防护、震动控制等。爆破最终取得了圆满成功,为类似工程实践提供经验借鉴。     

林业碳汇的法律制度设计

全球气候变化问题己经成为全世界的焦点,在2009年的哥本哈根会议上,我国政府提出了到2020年单位国内生产总值二氧化碳排放比2005年下降40%-45%的目标。面对这样的形势,我国应加速林业的发展,积极增加林业碳汇。本文阐述了林业碳汇的概况,总结了目前林业碳汇的法律制度,提出了完善林业碳汇法律制度的构想。     

基于社会需求视角下高职院校毕业生的就业分析

随着我国社会经济的成功转型,社会对专业技术人才的实际需求数量存在重大缺口,专业技术人才出现严重短缺。但是,学校的人才培养与社会需求没有达到有效的对接。     

基于DKC值的K-means改进聚类算法的研究

由于K-means算法的中心点是随机选择的,这样会导致聚类结果很不稳定,同时,孤立点的存在也会影响到聚类的精度,为解决这些问题及二者之间互相牵制,文章基于DCK值来对初始聚类中心进行选择,同时去除数据中的孤立点,使得聚类中心相对稳定,再利用改进的k-means算法对数据进行聚类,改进后的算法较原始算法更准确。     

第三方物流服务商开展电子商务的竞争策略研究

通过对我国第三方物流服务商开展电子商务的SWOT分析,提出了其利用电子商务整合企业资源,实现整个供应链最优化从而获得竞争优势的策略。     

Drivers and implications of entrepreneurial orientation for academic spin-offs

International Entrepreneurship and Management Journal - This paper has been designed with a dual goal. On the one hand, the paper aims to examine the role of management teams, industry agents, and...     

Corporate financial distress: The case of publicly listed firms in an emerging market economy

Occurrences of financial distress (FD) are not readily obvious yet can span several periods. This paper examines episodes of FD using industry‐relative (IR) firm‐/ accounting‐, market‐ and macro‐level information. Mixed logit regressions reveal that firm‐ and market‐based measures, as well as macro‐level variables explain the likelihood of FD in 263 publicly listed non‐banking firms in the Philippines during the period 1995 to 2018. Rates of identification of firms in financial distressed states of close to 69 percent are obtained at a cutoff probability of 0.30 in the model with time‐varying intercept and slope. This study shows the importance of recognizing heterogeneous firm behavior. The ability to more accurately predict the probability of FD and to determine the financial health of firms can help financial institutions in allocating funds and policy makers in predicting crises episodes.     

Attracting potential blood donors: The role of personality and social marketing

Globally, society has been facing several and growing health problems, which increased the importance of efforts towards social change. In this context, using social marketing to create and implement programs that foster behavioural change has increased in the public health community. One of the health problems that society has been facing is the unceasing need for blood products, so the subject of blood donation became an important research topic in the area of social marketing, as social marketing strategies can contribute to solving this problem. It is essential to understand the factors that motivate individuals to donate blood, to enhance the recruitment and retention of blood donors. Our study aims at evaluating the key personality factors that influence blood donation behaviour to reach a higher understanding of what concerns this global issue. The method used to analyse the data is ANOVA. We conclude that the Personality of potential donors is significantly different from the non-donors' regarding Openness to Experience and Agreeableness. These results suggest that potential donors might perceive blood donation, as well as the associated barriers, differently from non-donors. Based on our findings, we suggest some perspectives for future research in this area.