Effect of Parental Migration on the Academic Performance of Left‐behind Middle School Students in Rural China

China's rapid development and urbanization over the past 30 years have caused large numbers of rural residents to migrate to urban areas in search of work. This has created a generation of children who remain behind in rural areas when their parents migrate for work. Previous research has found mixed impacts of parental migration on the educational achievement of left‐behind children (LBC), perhaps because of methodological deficiencies and lack of recognition of the heterogeneity of this population of children. Our study attempts to examine the impact of six types of parental migration on the academic achievement of a rural junior high school sample. Our study uses a panel of 7148 junior high school students to implement a difference‐in‐difference analysis and finds that parental migration has a negative and significant impact on the academic achievement of junior high school students. Our study suggests that the Chinese Government should implement measures to dismantle barriers to the human capital accumulation of LBC to ensure sustainable economic growth and human capital development in China.     

凝聚文化之力 助推持续发展

企业文化是企业的经营理念．品牌形象．制度规范．精神支柱，是企业可持续发展的基础和保障，当今时代．文化在企业核心竞争力中的地位日益重要。     

民国会计教育研究

我国古代传统的会计教育是以账房师傅手把手教徒弟,一代传一代的方式进行的,且每个人记账的方式都大有不同,直至晚清之前,中国的会计教育是不成系统的。随着西方会计科学的传入和我国第一批留学归来的会计学者的推广,晚清时期,学堂的商科会计教育已经具备现代会计教育的雏形。在改良中式账簿与完全引进西方会计科学的激烈讨论中,"中华民国"时期的会计教育正式走向正轨,也可以说,中国系统的现代意义上的会计教育是从中华民国开始的,而民国早期与后期又有不同。本文将根据中国会计教育发展的时间轴线,对中国古代会计教育与晚清商科会计教育作一梳理,并着重研究"中华民国"时期的会计教育,并从官办会计教育与民间会计教育两个方面来考量。     

离子色谱法在食品添加剂检测中的应用分析

随着食品安全越来越受到人们的重视,对食品添加剂的检测和安全管理也备受关注。本文着重分析了作为一种新型分离分析技术,离子色谱法在食品添加剂检测方面的应用,具有快速便捷、灵敏度高、环境优好、选择性佳等优点,为食品安全打下坚实的基础。     

基于八大经济区视角的中国县域经济增长差异与趋同分析

按照八大经济区划分法运用泰尔指数对我国2003~2012年1 902个县域的经济增长差异进行了测度,发现八大经济区区域间的经济差异是中国县域经济差异主要来源,而区域内县际的经济差异则处于相对次要地位;通过实证分析表明,中国八大经济区县域经济增长存在绝对β收敛,但不同经济区县域经济的收敛速度存在较大差异。提出县域发展建议:缩小地区差距、统筹区域发展,在县域经济发展分类的基础上进行规划指导和政策调整,加强县域间的交流与合作。     

不同产地中试生产葡萄酒中白藜芦醇的含量测定

目的是建立中试生产葡萄酒中白藜芦醇的含量测定方法。方法系采用高效液相色谱法测定了白藜芦醇的含量,C_(18)色谱柱(250 mm×4.6 mm,5μm),流动相为甲醇∶水=40∶60,流速1mL/min,检测波长306 nm,柱温30℃。结果显示白藜芦醇与样品中其他组分分离效果较好,白藜芦醇在0.271 3~4.340 0μg范围具有良好线性关系,相关系数r=0.999 9;平均回收率为94.6%,RSD为1.97%(n=6)。结论为采用此法准确可靠,可用于该葡萄酒的质量控制。     

Interactive effects of environmental experience and innovative cognitive style on student creativity in product design

Environmental experience can enhance the ideas of design students. Thus, this type of experience may interfere with the influence of design students’ cognitive style on creativity. The aim of this study was to examine the influence of environmental experience on the relationship between innovative cognitive style and industrial design students’ creative outcomes. The environmental experience was measured according to the total scores of the five components of sense, feel, think, act, and relate on the basis of Schmitt’s strategic experience modules. The cognitive styles were measured using Kirton’s adaption–innovation inventory, and creative works were assessed through the consensus assessment technique, which was employed by three experts. Through a field experiment and survey investigation, the analysis indicated that innovative cognitive style significantly and positively influenced creativity, but this only occurred when student was accompanied with a low degree of environmental experience (i.e., a student had a low score for environmental experience); as the student attained a high degree of environmental experience, the influence of innovative cognitive style on creativity became weakened. The experiential media suggested that the natural elements, cultural history, group travel, and narrator effectively diversified the experiences of the students and enhanced creative thinking. This paper suggests providing increased stimulation of environmental experience prior to instructing design students to engage in creative activity. Environmental experience can benefit students by enhancing their creativity.     

基于乡村旅游效用的河南省农村土地资源利用研究

[目的]通过探讨农村土地资源在乡村旅游发展中的高效利用等问题,试图找到河南省合理配置乡村旅游发展用地的理论依据。[方法]以河南省乡村旅游发展中的农村土地资源为研究对象,采用文献法及综合分析法,揭示乡村旅游与农村土地资源利用二者互为影响、相互促进的关系。[结果]农村土地资源是乡村旅游发展的重要物质基础和决定因素,同时乡村旅游的发展能够促进农村土地资源的高效利用。但河南省在乡村旅游发展中农村土地资源利用仍存在土地规划利用不合理,结构单一;土地生态意识淡薄;土地管理机制不完善;土地运作不规范,利益分配不合理等问题,由此提出科学规划乡村旅游用地、提高农村土地生态环保意识、建立健全土地管理和监督机制及协调土地相关者的利益分配等指导建议。[结论]农村土地资源和乡村旅游应该相互融合,充分发挥集成联动效应,从而实现河南省乡村旅游可持续发展。     

甘肃省耕地质量等别特征与空间分布研究

[目的]摸清甘肃省耕地质量空间分布地区差异,整体把握全省耕地质量状况,以期为耕地保护策略制定提供参考依据。[方法]文章基于Arc GIS 10.0软件,以2015年耕地质量等别更新评价县级数据和省级汇总数据为主,采用克里格空间插值法研究了省域范围内耕地质量的空间格局,采用对比研究法、分类统计法分析了全省、各市州及各区域的耕地质量状况。[结果](1)甘肃省存在4个中等质量耕地分布区域。自然质量等别、利用等别和经济等别下的中等质量等值区逐渐缩小:在陇南逐步向东南方向缩进,在河西走廊逐步由张掖向西北缩进,在兰州白银一带由带状区域缩小至零星区块;(2)全省耕地质量分布在8~15等,平均为13.1等,比全国耕地平均等别低3.1等;(3)各市(州)和各二级区耕地质量等别差异明显,中等地主要分布在河西走廊地区,低等地集中在陇东和陇中地区。[结论]甘肃省耕地质量等别总体偏低,基于耕地质量的耕地保护策略值得决策部门进一步关注,应持续研究耕地质量随时间的变化态势并在评价过程中考虑"土壤污染"因素。     

Managerial Agency Costs of Socialistic Internal Capital Markets: Empirical Evidence from China

This study provides empirical evidence of managerial agency costs in socialistic internal capital markets. Listed Chinese companies are required to disclose the amount of resources that are reallocated to other firms of the parent company, which provides us with a direct measure of the socialistic subsidization of weak member firms by strong member firms within a business group. We hypothesize that in strong member firms, managerial compensation is less sensitive to firm performance because cross‐subsidization makes it difficult for group CEOs to hold the managers in strong firms accountable for their own firms' performance, and also increases the noise in performance measures. We also hypothesize that socialistic cross‐subsidization results in an increase in managerial agency costs of strong member firms due to the low pay‐performance sensitivity and low incentive to work hard. We document empirical results that are consistent with these two predictions.