MAS环境下实现Agent交互协作的关键技术

讨论了MAS环境下实现Agent交互协作的关键性问题。在分析Agent协同设计目标的基础上,将遗传算法应用于子任务的调度,提高了Agent协同工作的效率。应用Agent的通信语言建立了一个基于知识查询与操纵语言的Agent通信模型,通过引入Agent位置追踪和Agent消息缓存机制解决了Agent移动过程中遇到的位置追踪和通信失效问题。     

高校图书馆与大学生素质教育

全面推进素质教育是高校工作的重要目标 ,作为高校三大支柱之一的图书馆 ,是高校实施素质教育的重要基地。文章就高校图书馆在大学生素质教育中的作用、图书馆如何利用自身优势、发挥教育职能、把素质教育的思想贯穿于图书馆工作 ,以及对图书馆实施素质教育的目标和途径 ,如何提高大学生的创新精神和实践能力等问题做了论述。     

农地经营权流转与宁夏生态移民发展研究

笔者通过对宁夏生态移民迁入地发展滞后的现状分析,发现农地建设与经营成本负担是制约生态移民迁入地发展的主因。根据制度变迁理论,结合十七届三中全会决议,文章探讨了生态移民农地经营权流转制度,提出采取“农地收购”、“招募式移民安置与农地产业化经营模式”是解决当前农地短缺和生态移民发展问题的有效途径。     

高职院校体育教学ISO质量管理主体意识的现状与提升研究

本文指出高职体育教学ISO质量管理主体意识的提升是实现高职体育教学的科学、标准化和规范化的基础。     

吴晗治史精神论略

吴晗一生长涉文史,覃思著述,曾对我国20世纪史学的发展和繁荣做出了巨大贡献,其丰富独到的治史精神也成为了我们用之不竭的宝贵财富。主要表现在：一是坚持唯物主义史观;二是彰显史学致用意识;三是秉承求实考据之学;四是倡导史学普及理念;五是恪守历史教育精神。这些精神对于促进历史科学的赓续发展具有极为重要的意义,对今天的史学工作者来说亦不无裨益。     

政治宽容：概念的厘定

政治宽容不是一种美德,它是一种允许不同政见存在并使它们得以和平共存的政治手段,其本质是建立和维护有利于政治统治与管理和谐的政治秩序。政治宽容的限度为宪法规定。据此政治宽容概念可界定为：政治宽容是政治权力主体在宪法范围内,通过尊重和保障政治权力对象的政治自由与权利,允许不同政见的存在并使它们得以和平共存,以实现有利于政治统治与管理和谐的政治秩序的一种政治手段。     

Cross Validation of the Gambling Problem Severity Subscale of the Canadian Adolescent Gambling Index (CAGI/GPSS) on a Sample of Ontario High School Students

This paper reports on the cross validation of the Gambling Problem Severity Subscale of the Canadian Adolescent Gambling Index (CAGI/GPSS). The CAGI/GPSS was included in a large school based drug use and health survey conducted in 2015. Data from students in grades 9–12 (ages 13–20 years) derived from the (N = 3369 students). The CAGI/GPSS produced an alpha of 0.789. A principle component analysis revealed two eigenvalues greater than one. An oblique rotation revealed these components to represent consequences and over involvement. The CAGI/GPSS indicated that 1% of the students fell into the “red” category indicating a severe problem and an additional 3.3% scored in the “yellow” category indicating low to moderate problems. The CAGI/GPSS was shown to be significantly correlated with gambling frequency (r = 0.36), largest expenditure (r = 0.37), sex (more likely to be male) (r = ?0.19), lower school marks (r = ?0.07), hazardous drinking, (r = 0.16), problem video game play (r = 0.16), as well as substance abuse. The CAGI/GPSS was cross validated using a shorted version of the short SOGS, r = 0.48. In addition the CAGI/GPSS and short SOGS produced very similar patterns of correlations results. The results support the validity and reliability of the CAGI/GPSS as a measure of gambling problems among adolescents.     

Influence of socioeconomic status on changes in body size and physical activity in ageing black South African women

Background

The increasing prevalence of obesity in sub-Saharan African women is not well understood, and black South African women in the region are particularly vulnerable. This study aimed to examine whether the relationship of socioeconomic status (SES) with changes in body mass index (BMI) and waist circumference (WC) is mediated by physical activity in ageing African women.

Methods

In a longitudinal analysis of the 518 caregivers associated with the Birth to Twenty Plus study, the role of SES associated with 10-year changes in BMI and WC was tested using structural equation modelling (SEM). The degree of mediation of moderate-vigorous physical activity (MVPA) and sitting time in this association was also assessed.

Results

The prevalence of obesity increased significantly from baseline to follow-up (p?<?0.0001). In the SEM models, baseline SES had a direct positive effect on changes in BMI (β, 95% CI, 0.02 (0.005 to 0.04), and a direct negative effect on changes in MVPA (β, 95% CI, ??3.81 (??6.92 to ??0.70). Baseline MVPA had a direct negative effect (β, 95% CI, ??0.002 (??0.003 to ??0.0003) and indirect positive effect via change in MVPA (β, 95% CI, 0.01 (0.0001 to 0.001) on change in WC.

Conclusions

Our study demonstrates the role and interaction of sociodemographic and behavioural predictors of obesity, and suggests a multifaceted approach to management of the crisis in communities of ageing urban African women.