村庄居住模式的社会变迁——以LSZ村为个案的考察

目前,中国农村正发生着村民的盖楼运动这一场"大革命"。本文以LSZ村为个案来考察村民的盖楼运动及其引发的居住模式变迁,认为LSZ村居住模式的变迁主要经历三个阶段:"石屋"、"钢筋水泥式楼房"和"别墅式楼房"。而且,这种居住模式的变迁与村庄的社会文化习俗和农民价值观念的变化有着紧密的联系。     

内江市公园绿地土壤重金属Cu分布研究

对内江市大干园、塔山公园、大洲广场、人民公园0-20cm土层中的Cu、有机质和pH值进行研究,以农耕地为对照,结果表明：（1）土壤中Cu含量塔山公园显著低于人民公园,各公园绿地与农耕地差异不显著,各公园绿地土壤Cu为国家一级标准;（2）不同坡位Cu含量总体表现为：下坡＞中坡＞上坡;（3）各绿地土壤pH值为7.4～8.33,有机质含量差异不显著;（4）公园绿地土壤中Cu含量与有机质、pH值之间相关性不显著.     

浅谈如何调动学生的学习兴趣,优化数学教学

作为数学老师,平生最大的愿望就是使每一个学生能轻松愉快地学好数学.经过多年的教学,我认为优化课堂教学是实现这一愿望的重要途径.而如何优化课堂教学,学生学习兴趣的调动起着至关重要的作用.     

新形势下应用型高校无机化学教学初探

针对当前地方性工科院校无机化学教学现状,提出应对无机化学进行教学内容和教学方法的改革,并从教学内容、教学模式、创新教育等方面进行了尝试和探索.     

Interactive radiological anatomy eLearning solution for first year medical students: Development,integration, and impact on learning

A technology enhanced learning and teaching (TELT) solution, radiological anatomy (RA) eLearning, composed of a range of identification‐based and guided learning activities related to normal and pathological X‐ray images, was devised for the Year 1 nervous and locomotor course at the Faculty of Medicine, University of Southampton. Its effectiveness was evaluated using a questionnaire, pre‐ and post‐tests, focus groups, summative assessment, and tracking data. Since introduced in 2009, a total of 781 students have used RA eLearning, and among them 167 Year 1 students in 2011, of whom 116 participated in the evaluation study. Students enjoyed learning (77%) with RA eLearning, found it was easy to use (81%) and actively engaged them in their learning (75%), all of which were associated to the usability, learning design of the TELT solution and its integration in the curriculum; 80% of students reported RA eLearning helped their revision of anatomy and 69% stated that it facilitated their application of anatomy in a clinical context, both of which were associated with the benefits offered by the learning and activities design. At the end of course summative assessment, student knowledge of RA eLearning relevant topics (mean 80%; SD ±16) was significantly better as compared to topics not relevant to RA eLearning (mean 63%; SD ±15) (mean difference 18%; 95% CI 15% to 20%; P < 0.001). A well designed and integrated TELT solution can be an efficient method for facilitating the application, integration, and contextualization of anatomy and radiology to create a blended learning environment. Anat Sci Educ 7: 350–360. © 2013 American Association of Anatomists.     

基于到达时间差的无线传感器网络中Sybil攻击检测方案

As wireless sensor networks （WSN） are deployed in fire monitoring, object tracking applications, security emerges as a central requirement. A case that Sybil node illegitimately reports messages to the master node with multiple non-existent identities （ID） will cause harmful effects on decision-making or resource allocation in these applications. In this paper, we present an efficient and lightweight solution for Sybil attack detection based on the time difference of arrival （TDOA） between the source node and beacon nodes. This solution can detect the existence of Sybil attacks, and locate the Sybil nodes. We demonstrate efficiency of the solution through experiments. The experiments show that this solution can detect all Sybil attack cases without missing.     

GM（1，N）－2模型及其在机器运行状态预测中的应用

根据现场特点，提出灰色非等间隔优化模型—ＧＭ（１，Ｎ）－２模型，对机器运行状态进行预测。并根据滨海轮的实测信号，对模型进行了检验。     

电动工业车辆供电电流的控制及直流牵引电动机暂态过程分析

本文根据电动工业车辆的牵引特性,讨论了直流牵引电动机和牵引蓄电池的匹配问题。提出一种可对电动工业车辆工作状态进行检测与控制的方法,从而改善直流牵引电动机在大负荷运行时的供电状况,提高蓄电池的工作容量和使用寿命。同时,对直流牵引电动机的暂态过程进行了分析。     

我国企业体育发展现状与对策研究

文章从企业体育的概念、作用入手,采用调查访问、文献资料等研究方法,重点对我国企业体育的发展现状及存在的主要问题进行分析,并提出我国企业体育的发展对策.以期为我国企业体育的发展指明方向,促进企业体育有序、高效地开展.     

Leveraging electronic collaboration to promote interorganizational learning

By combining research on interorganizational learning (IOL) with that on IT-enabled collaboration, this study examines the role of electronic collaboration (e-collaboration) enabled through the use of interorganizational information systems in the development of a firm's capabilities such as IOL. Moreover, this study examines IOL as a capability posited between electronic collaboration and firm performance. Finally, we conceptualize IOL as a multidimensional construct composed of information sharing, relationship-specific knowledge memory, and the development of shared meaning and verify the relationships between them. The study provides an empirical analysis of the proposed model and hypotheses by considering data from various industries. The results indicate that e-collaboration was positively related to all three components of IOL. In terms of the relationships between these components, information sharing had a positive effect on relationship-specific knowledge memory, which in turn facilitated the development of shared meaning. Only the development of shared meaning had a significant effect on firm performance. Discussions and implications of the results are provided.