Inference for Type II bivariate Pólya–Aeppli distribution

In this article, we discuss the estimation of model parameters of the Type II bivariate Pólya–Aeppli distribution using the method of moments and the maximum likelihood method. We also compare some interval estimation methods. We then carry out a Monte Carlo simulation study to evaluate the performance of the proposed point and interval estimation methods. Finally, we present an example to illustrate all the inferential methods developed here.     

A skew logistic distribution as an alternative to the model of van Staden and King

The logistic distribution is a simple distribution possessing many useful properties and has been used extensively for analyzing growth. Recently, van Staden and King proposed a quantile-based skew logistic distribution. In this paper, we introduce an alternative skew logistic distribution. We then establish recurrence relations for the computation of the single and product moments of order statistics from the standard skew logistic distribution by using the moments of order statistics from the standard half logistic distribution. These enable an efficient computation of means, variances and covariances of order statistics from the skew logistic distibution for all sample sizes. The results become useful in determining the best linear unbiased estimators of the location and scale paramters of the skew logistic distribution. Finally, we provide an example to illustrate the usefulness of the developed model and then compare its fit with that provided by the model of van Staden and King.     

‘It's an ordinary matter’: perceptions of cyberbullying in Thai youth culture

This qualitative study focuses on youth perceptions of cyberbullying (definition, causes, consequences, and management). We also articulate how perceptions of cyberbullying among Thai youth are influenced by Thai culture, including Thai youth culture. Data were collected from 15 to 24 year-olds in Central Thailand through 22 focus group discussions (FGDs) with 4–6 participants each, as well as 26 in-depth interviews (IDIs), totaling 136 participants. These youth defined cyberbullying as harming others through mobile phones and the Internet. To count as cyberbullying, actions had to cause real harm or annoyance and be committed with malicious intent. The relationship between the parties involved also mattered: close friends were unlikely to be considered cyberbullies. Participants thought that the anonymity of cyberspace is a key cause of cyberbullying but also that cyberbullying often results from previous offline incidents of violence. In their view, cyberbullying impacts individuals and their social interactions. Participants tended to manage the problem by themselves and not consult their parents. Alarmingly, participants viewed cyberbullying as ‘an ordinary matter’. To raise awareness that cyberbullying is a societal problem with serious consequences, state agencies and educational institutions need to play active roles in preventing it and responding to it constructively when it occurs.     

Potentials,problems and possibilities for developing New Zealand’s built environment through high-value geospatial information

Gaining useful information about our built, social and natural environments is vital and possible. The value of data for cities is more informed, more effective management and development choices resulting in more benefits to a greater range of stakeholders. This article explores the state-of-play of data infrastructures in New Zealand to identify the challenges to gaining better value from geospatial information. Following engagement with built environment data custodians and information users, it analyses how digital information infrastructure can support the sharing and use of richer and more comprehensive information by weaving a supportive fabric across data. The analysis reveals that data infrastructures primarily need to facilitate agreement on data management, sharing and use; the sharing of costs and benefits across stakeholders; and emphasise place as a powerful driver to richer information. An overarching sociotechnical approach to digital information infrastructure weaves data platforms, policy and technology together.     

江苏省经济景气循环监测系统总体设计

一、设计思路 江苏省的经济景气循环监测系统建立是统计部门的长远发展规划,特别是在科技革命迅速发展的今天,某项技术和产品的生命力取决于诞生它的思想深度和应变度,故我们的总体设计努力从如下几个方面来尽量达到这种要求并去寻找某种完美的境界。在吸收国内外同行的经验基础上,江苏的景气循环系统监测的总体规划设计有如下几个设想。     

Identifying key factors in momentum in basketball games

Momentum as elaborated under a recent novel definition has been shown quantitatively to have a significant impact on basketball game outcomes. This paper makes two contributions to the analytical literature on sports momentum: (1) two aspects of the new definition are operationalized so that its practicality becomes evident; and (2) through a dimension-reduction technique (elastic net), key factors associated with momentum are identified. Both technical variables such as field goals, assists, rebounds, etc. and environmental variables such as the spectator attendance rate and player salary dispersion are considered, and the potential for useful real-time analyzes is illustrated.     

表现事物背后的东西--观巴尔蒂斯《有树的大风景》有感

巴尔蒂斯以其极具个性特色的作品,被誉为20世纪为数不多的对人类有突出贡献的艺术家之一,通过对其代表作《有树的大风景》的分析,更多地了解他的艺术思想和创作手法,从而对认识今天的艺术应该怎样发展起到积极的引导作用。     

OPTIMAL AGRICULTURAL POLICY: SMALL GAINS?

Agricultural subsidies distort the allocation of workers across sectors, and may keep too many workers in agriculture. We use a general equilibrium model with endogenous sector selection calibrated to the U.S. economy to assess the efficiency loss and redistribution effect of the current transfer system. Eliminating current subsidies has two main effects: (1) small efficiency gains (around 4% of agricultural output) and (2) a corresponding rise in the price of agricultural goods. We find high-productivity farmers to be the main beneficiaries of the existing policies, although some of the transfers generate a redistribution effect toward low-productivity agents, which extends beyond the agricultural sector. (JEL H21, H25, H30, J24, J31, J43)     

浅析高校思想政治理论课教学应遵循的原则

为了引导大学生运用马克思主义的立场、观点、方法分析和解决问题,增强事业心和责任感,树立正确的世界观、人生观、价值观,高校思想政治理论课教学必须遵循四条原则：政治方向性原则、学生主体性原则、教．学针对性原则和德育核心性原则。