生产者货币计价决定因素的实证研究

利用12个发达国家和发展中国家的非平衡面板样本数据,对微观、宏观和其他因素对生产者货币计价(PCP)的影响进行实证研究,指出经济规模、市场份额、金融市场的发达程度、币值的对内稳定性和产品差异化程度是最主要的影响因素,而出口商的谈判能力、币值的对外稳定性等因素也对PCP的选择有一定影响。根据实证检验结果,对人民币作为贸易计价货币的条件进行评估,发现其优势在于我国的经济规模、出口商的市场份额及其谈判能力以及人民币汇率的相对稳定性; 劣势在于相对落后的金融市场、不可预期性较大的通货膨胀水平以及产品的差异化程度。     

Adolescents’ perceptions of the ‘substance use-violence nexus’: a South African perspective

The aim of the study was to explore adolescents’ perceptions of substance use as a contributing factor to community violence by employing a conceptual framework proposed by Goldstein. Data were collected from a sample of adolescents between the ages of 15 and 16 years by means of focus group interviews. Theoretical thematic analysis was used to analyse and interpret the findings. The participants’ perceptions indicated that substance use and withdrawal symptoms induce physiological and behavioural modifications resulting in aggression and violence. The findings also suggest that participants believed that substance users frequently commit property and violent interpersonal crimes such as theft, robbery, assault and murder to procure their substances. Further, the adolescents’ perceived violence to be rooted within gang culture as well as the involvement in shared markets for illicit substance trading.     

Stochastic comparisons between extreme order statistics from scale models

Stochastic ordering relations between extreme order statistics from exponential, Weibull and gamma distributions have been studied extensively by many researchers in recent years. In this work, we obtain various ordering results for the comparisons of two extreme order statistics from scale models when one set of scale parameters majorizes the other. The new results obtained here are applied when the baseline distributions are exponentiated Weibull or generalized gamma distributions. In this way, we generalize and extend some results established recently in the literature.     

Perceived emotional intelligence and social competence in neglected adolescents

This research work analyses the emotional intelligence (EI) and the social cognitive attitudes and strategies in adolescents between 12 and 17 years of age in residential care. The aim of the work is to identify those aspects that hinder their socio-emotional competence, requiring a more urgent intervention. We explore the presence of significant differences between the variables under study according to gender and age range (12–14 and 15–17) and we analyse the relationship between the dimensions of their EI and their social competence. The results show a lack of EI in these adolescents, with all three dimensions being affected: emotional attention, clarity of feelings and emotional repair. As for social competence, it can be seen that the adolescents are characterised by a lack of confidence and firmness in their interactions. Worthy of note is the impulsive cognitive style, as are the rigidity of thought and the tendency towards social mistrust and suspicion. There are many difficulties concerning the strategies for resolving social problems. This research highlights the need to design training programmes for the residential care centres that will favour their socio-emotional development.     

Knowledge and Skills of Sexual Abuse Prevention: A Study on School-Aged Children in Beijing,China

To examine the level of child sexual abuse prevention knowledge and skills in a sample of school-aged children, a total of 559 children from first to fifth grade were recruited from one primary school in Beijing, China. Participants were asked to finish a questionnaire surveying their knowledge and skills of child sexual abuse prevention. Results showed that accurate rate of knowledge on child sexual abuse prevention were between 44.0% and 80.0%. Percentage of participants having applied the self-protection skills of “saying ‘no,’” “going away,” and “telling adults” properly in hypothetical situations was 57.4%, 28.3%, and 48.3%, respectively. Third-to-fifth graders had a better performance than first-to-second graders, and girls performed better than boys. Findings suggest that Chinese school-aged children are in need of knowledge and skills related to child sexual abuse prevention, and education programs should be developed as soon as possible.     

Quantile Regression for Location‐Scale Time Series Models with Conditional Heteroscedasticity

This paper considers quantile regression for a wide class of time series models including autoregressive and moving average (ARMA) models with asymmetric generalized autoregressive conditional heteroscedasticity errors. The classical mean‐variance models are reinterpreted as conditional location‐scale models so that the quantile regression method can be naturally geared into the considered models. The consistency and asymptotic normality of the quantile regression estimator is established in location‐scale time series models under mild conditions. In the application of this result to ARMA‐generalized autoregressive conditional heteroscedasticity models, more primitive conditions are deduced to obtain the asymptotic properties. For illustration, a simulation study and a real data analysis are provided.     

A Route to Safety: Using Bus Boarding Data to Identify Roles for Transport Providers within Contextual Safeguarding Systems

During adolescence, risk to young people's safety shifts from familial to community contexts. Contextual safeguarding has emerged in response to this dynamic; by providing a conceptual framework through which to incorporate extra‐familial contexts (and those who manage them) into traditionally family focused child protection systems. This paper uses Geographic Information System mapping techniques to explore the extent to which bus boarding data could be used to: target protective interventions in public spaces; evidence routes where young people may be vulnerable; and build local area problem profiles. In doing so it provides foundational evidence for including transport providers in contextual safeguarding systems.     

古典家具的“分”与“融”对现代设计的启示

弃“席”而“坐”居住方式的重大变革是中国古典家具“分”与“融”的主要根源。以楚式家具、宋式家具、明清家具为代表，在矮型家具向高型家具的演变进程中，家具突显出在功能、阶级风格上的“分离”和以消除与居住方式的分歧为目的的式样上的“融合”。其中的“分”与“融”，对现代设计中如何把握产品功能、设计元素、品牌文化的“取”“舍”尺度问题具有重要启示。