Parental involvement in secondary education schools: the views of parents in Greece

The present study explores Greek parents’ views on parental educational involvement and its impact on adolescent scholastic and social development. Specifically, aspects of parental involvement such as the achieved objectives of current parent–school communication, the psychological climate dominating teacher–parent interactions and parents’ suggestions for improvement of current policies and practices are examined. Four hundred and seventy‐five parents participated in the study. Findings showed that family–school communication is believed to be insufficient in Greece, despite the fact that parents tend to: (1) regard their cooperation with teachers as determinative of adolescent academic and psychosocial development; (2) consider teachers to be friendly and caring; and (3) believe that secondary school provides some opportunities for constructive parental involvement. These paradoxes are discussed and explained as a result of radical changes in current social and educational values, principles and objectives.     

关于内接单形几个几何不等式及应用

应用几何不等式理论与解析方法,研究欧氏空间En中n维单形的几何不等式问题,建立了关于单形与其内接单形的两个不等式,推广了已有的结果,推广了著名的n维Euler不等式。     

家长参与学生家庭作业的类型及其价值

家庭作业是学校教师布置给学生,让他们在课外时间完成的任务。家庭作业作为学生学习的重要任务,其完成的质与量是检验学习效果、衡量教学质量的重要指标。家长参与学生的家庭作业具有不同的类型及表现形式,对学生的学习会产生不同的影响。通过探讨家长参与学生家庭作业的类型,以期为学校教育和家庭教育提供借鉴。     

Gender and research publishing in India: Uniformly high inequality?

Women’s access to academic careers has been historically limited by discrimination and cultural constraints. Comprehensive information about gender inequality within disciplines is needed to understand the problem and target remedial action. India is the fifth largest research producer but has a low international index of gender inequality and so is an important case. This study assesses gender inequalities in Indian journal article publishing in 2017 for 186 research fields. It also seeks overall gender differences in interests across academia by comparing the terms used in 27,710 articles with an Indian male or female first author. The data show that there are at least 1.5 male first authors per female first author in each of 26 broad fields and 2.8 male first authors per female first author overall. Compared to the USA, India has a much lower share of female first authors but smaller variations in gender differences between broad fields. Dentistry, Economics and Maths are all more female in India, but Veterinary is much less female than in the USA. There is a tendency for males to research thing-oriented topics and for females to research helping people and some life science topics. More initiatives to promote gender equality in science are needed to address the overall imbalance, but care should be taken to avoid creating the larger between-field gender differences found in the USA.     

关于(h,m)-凸函数乘积的Hadamard-型不等式及应用

建立一些关于（h,m）-凸函数乘积的新Hadamard-型不等式,得到的结果是对通常凸性、第2种意义下的s-凸性、m-凸性、h-凸性意义下的Hadamard-型不等式的推广.     

Demand articulation in emerging technologies: Intermediary user organisations as co-producers?

User involvement is assumed to be beneficial to innovation processes. Intermediary user organisations contribute to articulating societal demands for innovations. However, the learning processes inside these organisations are still not understood well. Therefore, this paper empirically investigates intermediaries using an event history approach. It yields characteristic learning mechanisms, e.g. concerning the management of expectations or actively building a case. If intermediaries overcome challenges regarding positioning, representation and the level of proactivity, they can play a precarious role in demand articulation in the context of new technologies.     

中国健康绩效的动态演进:公平与效率的权衡

利用中国健康与营养调查(CHNS)数据,计算了我国城乡健康扩展集中系数和健康绩效指数,结果显示:1991 - 2006年,城乡健康水平呈现下降趋势,最穷个体的健康下降程度最大;2000年以后,城乡健康标准集中系数显著为正,表明我国存在亲富人的健康不平等,高收入人群的健康状况更好;在平均健康水平逐渐下降,亲富人的健康不平...     

对外开放、贸易商品结构与中国城乡收入差距——基于省际面板数据的实证分析

本文描述了1995年以来我国各地区贸易开放度、贸易商品结构与城乡收入差距的变化趋势,依据新经济地理理论及扩展的H-O理论提出了贸易商品结构变化影响城乡收入差距的相关假说,并进行了实证检验。研究结果表明:(1)从全国范围以及分地区来看,贸易开放度的扩大和制成品贸易比重的上升均有利于城乡收入差距的缩小;(2)外资的流入促进了制造业的发展和制成品贸易比重的上升,各省份外资依存度的提高对城乡收入差距具有缓和作用,但统计上不显著;(3)当前劳动力的不充分流动、各省份海外市场接近度的差异等仍是制造业空间布局扩散和城乡收入差距缩小的不利因素。因此,在进一步扩大对外开放的基础上,促进劳动力、资本等要素跨区域充分流动,优化各地区的产业结构和贸易商品结构,对缩小城乡收入差距具有积极作用。     

一个含临界指数的拟线性椭圆型方程的注记

研究了如下的拟线性椭圆型方程:△pu+uq+λup*-1=0,u∈W1o,p(Ω), (1λ)其中,Ω2是RN中具有光滑边界的有界区域,△pu=div( |▽u|p-2▽u),N≥3,2≤p＜N,0＜q＜1,p*=NP/N-P.设λ*(Ω,p,q)是拟线性椭圆型方程(1λ)可解的参数集的上确界.运用变分方法,在不要求具有对称性质的一般区域Ω上得到了λ*(Ω,p,q)的一个可以精确计算的下界.     

一类四重迭代差分不等式

建立了一类新的差分不等式,利用差分定义、求和技巧、差分方程比较原理,给出了不等式中未知函数的估计,推广了已有的结果。