Learning design and technology through social networks for high school students in China

The subject of design and technology was introduced to the curriculum for high schools in China 10 years ago. However, the teaching and learning of this subject have become difficult for both teachers and students because there is a lack of qualified teachers with design background to deliver this subject in a way to stimulate the learning interests of the students. This paper presents a research that is aimed at improving this situation by integrating the teaching and learning of design and technology within a computational environment as part of social networks sites. The purpose is to enable the collaboration among the students and interaction between teachers and students. In this research, a series of investigations were conducted, by following through several taught subjects in design and technology in prominent high schools in China. Based on these investigations, a theoretical framework for web-based design learning and teaching system in the style of social networking is developed, implemented and tested, emphasizing three features of design: innovation, collaboration, and interaction. This framework has been tested among high school students and teachers in a high school in Nanjing. It identified and validated necessary techniques and design features required to make an education-related social networking site effective and affective for the students and teachers. The results of this research indicated that social networking sites have significantly positive values in design education, especially for the collaboration and interaction on the subject of design and technology.     

坚守立校初心 勇担时代使命——认真贯彻落实《中国共产党党校(行政学院)工作条例》

《中国共产党党校(行政学院)工作条例》以党内法规形式明确和拓展了党校(行政学院)"五大职能"和"四大作用",党校人必须牢记于心、付诸于行、贯彻到底,不忘初心、牢记使命、永远奋斗,不断增强做好党校工作的政治自觉和行动自觉。     

乡村旅游核心利益相关者协调发展评价研究——以青海省海东市互助土族自治县小庄村为例

文章基于利益相关者理论的视角，选取青海省海东市互助县小庄村为案例地，通过田野调查和文献梳理分析出核心利益相关者的利益诉求和矛盾冲突，并构建乡村旅游核心利益相关者协调发展评价体系，采用EWM-Fuzzy综合评价模型和灰色关联模型对地方政府、旅游企业、社区居民及外来游客四类核心利益相关者利益诉求的紧急程度、利益关系协调发展状态及整体协调发展关系进行测评分析。研究表明，小庄村四类核心利益相关者对不同利益诉求的整体感知较好，不同利益诉求的紧急程度和协调发展状态均存在如下较大差异:四类核心利益相关者的利益诉求主要处于中度协调和轻度协调两种发展状态，优质协调发展状态的利益诉求表现相对较少，且存在濒临失调发展状态的利益诉求表现；小庄村旅游核心利益相关者相互间的协调发展关系呈现出多元化的发展状态，地方政府、旅游企业同其他利益相关者的利益关系协调发展的影响大小顺序完全一致，地方政府、社区居民同其他利益相关者的利益关系协调发展的影响大小顺序相对应，而外来游客、社区居民同其他利益相关者的利益关系协调发展的影响大小顺序基本相反；小庄村旅游核心利益相关者协调发展路径组合未达到纳什均衡状态，其协调发展模式为非对称互惠协调发展模式。上述验证结果与小庄村旅游发展的实际情况基本吻合，证明了评价体系的科学性。     

Does economic performance affect officials’ turnover? Evidence from municipal government leaders in China

As is well known, Chinese central government has full authority to determine the provincial and local officials’ turnover. However, China has not in detail interpreted the standards of officials’ promotions so far. In this paper, the latest database of city-level leaders for the period between 2002 and 2013 is utilized to investigate the influences of economic performance on party secretaries’ odds of being promoted. The estimation results by a panel multinomial logit method indicate that municipal annual GDP per capita is significantly positively associated with leaders’ chances of promotion. Specifically, the average GDP growth rates during leaders’ tenures have much higher effects. Moreover, some important factors of leaders’ personal characteristics also affect the political turnover. For instance, party secretaries’ connection with China’s Communist Youth League, political experience, educational level and professional expertise all have positive impacts on their chances of obtaining a promotion. In contrast, leaders’ ages and tenures are found to be negatively related to their promotion possibilities.

     

ERP与MRO系统集成过程建模与应用研究

为了实现产品生产阶段到服务阶段业务与数据的有效集成,从业务层和数据层对制造服务系统中的大修维护维修(MRO)与企业资源计划(ERP)的集成过程进行了建模与分析,对ERP与MRO系统之间的业务过程和信息交互过程进行了分析,建立了二者的业务集成框架模型,分析了ERP与MRO系统的数据结构转换过程,提出了二者数据集成模型。应用Web Services完成了ERP与MRO的系统集成开发,包括服务BOM集成、备品备件管理集成等。研究结果实现了制造和服务阶段关键产品数据信息的集成与反馈,打通了从制造到服务阶段的数据传递与集成,对进一步研究复杂产品生命周期管理的信息集成具有一定的借鉴意义。     

高分1号冬小麦解译面积核算方法研究

[目的]以高分1号(GF-1)融合2m卫星遥感影像为基础数据源,结合土地利用现状数据、高分多源遥感影像和地面样方等数据,对冬小麦分类提取中存在的面积误差问题进行研究和分析。[方法]文章以河南省永城市为研究区,在冬小麦提取结果聚类处理基础上,基于线性地物缓冲区数据,采用GIS空间运算实现线性地物面积扣除,接着分析了样方数据和土地利用现状数据再扣除零星地物面积比例上的差异,并采用样方零星地物平均扣除系数对全市各乡镇耕地与非耕地中冬小麦提取面积进行了相关统计和误差分析。[结果]永城市冬小麦最终解译面积11. 29万hm~2,其中线性地物和零星地物扣除面积分别为6 613. 08hm~2和3 875. 22hm~2,占研究区冬小麦解译面积的5. 86%和3. 32%,与统计上报数据相比,其处理前后误差由14. 12%降低至4. 41%,有效地提高冬小麦提取面积精度。[结论]误差来源分析与修正对冬小麦解译面积核算精度具有重要影响,该研究为县级区域尺度下冬小麦面积提取核算提供了思路和借鉴。     

媒体报道、投资者情绪与股价波动

媒体报道是有倾向、 有选择的,而投资者决策是有偏且关注是有限的.因此,媒体报道的倾向性成为影响投资者情绪的一个指标,进而影响股票市场的整体走势.基于此,本文通过构建媒体报道综合指标,运用中介效应分析方法,基于投资者情绪视角研究媒体报道对股价波动的影响.研究结果表明:由于大多数投资者通过媒体报道的新闻事件获取和构建自己的信息框架,因此,媒体报道的议程设置这一特点使得投资者情绪发生积极或消极的变化,而投资者情绪对投资者的决策产生直接影响,进而表现为媒体报道倾向性引发股价波动.     

基于能值分析法的重庆市可持续发展研究

以重庆市2012-2018年统计年鉴数据为基础,采用能值分析法,核算重庆市绿色GDP,并从可更新资源、不可更新资源、货币流和环境损耗四方面选取部分指标进行分析,对重庆市可持续发展能力进行初略研究.结果表明:①在2012-2018年间,重庆市绿色GDP的增长速率与GDP相比增长较为缓慢,经济发展对不可更新能源依赖性逐渐增强,环境系统承受的压力逐年增大.②2012-2018年的重庆市的ESI值呈现动态波动,整体呈下降趋势.重庆市的环境资源拥有良好的状态发展,区域环境和自然资源能够对重庆市的经济发展持续的提供能量.重庆市发展过程中应该减少对环境的依赖,转变发展方式,努力实现绿色可持续发展.     

互联网平台垄断与低质量陷阱

坚定不移地走高质量发展道路，已经成为各领域发展的共识。然而，随着互联网平台经济的飞速发展，线上市场中的低质量问题也变得愈加突出，相比线下市场，线上市场同类产品不合格率、不达标率、投诉量更高。文章认为平台垄断是低质量陷阱产生的主要原因，超级互联网平台的价格垄断、流量垄断和渠道垄断行为，一方面形成了对低成本实体经济需求的"扩张效应"，即低价垄断迫使实体企业降低产品质量成本；另一方面形成了对高质量产品的"挤出效应"，即流量垄断带来的高额流量费用，迫使实体企业将大部分资金用于线上市场产品营销，挤出了质量创新投入和渠道垄断形成的巨大规模效应，迫使实体企业将低质低价产品打造成为爆款，保障线上市场销量优势。为此，政府部门需要加大对互联网平台恶性价格竞争的监管和处罚力度，督促互联网平台降低实体企业经营成本，强化互联网平台对实体企业的质量赋能作用。     

Do constraints created by economic growth targets benefit sustainable development? Evidence from China

An economic growth target is a declaration by policy authorities of commitment to that target and the corresponding allocation of resources. The constraints created by economic growth target are an important economic management method in China, which has helped China's economy to achieve remarkable achievements. However, it has also brought about serious environmental problems, threatening China's sustainable development. Using the data about economic growth targets in the work reports of 30 Chinese provincial governments from 2006 to 2017, this paper constructs several spatial measurement methods, such as the spatial Durbin model, to examine the constraints created by economic growth target's impacts on air pollution. The main conclusions are as follows. First, a significant “U-shaped” relationship exists between the constraints created by economic growth targets and air pollution. Second, the spatial Durbin model analysis revealed that PM_2.5 across China's provinces display significant positive spatial spillover effects and spatial agglomeration characteristics. Third, the direct, indirect, and total effects of constraints created by economic growth targets on air pollution are all statistically significant and depict a “U shape.” Finally, the constraints created by economic growth targets have an apparent threshold effect on air pollution, and the inhibiting effects increase with human capital and industrial restructuring. However, with the increase in foreign direct investments, constraints created by economic growth targets may increase air pollution. The conclusions of this paper are of great significance for improving the management of local government economic growth targets and sustainable development.