云南省县域内教师交流轮岗意愿调查:基于3115份数据的分析

对云南省5个县3115位教师的调查显示,县域内教师交流轮岗意愿较低。无法照顾孩子和家庭、轮岗地点离家远与交通不便、岗位适应困难是教师参与轮岗的主要顾虑。结合实地调查发现,城乡二元发展格局及相应的文化心理,导致教师意愿与政策初衷背离;复杂的自然地理环境和交通条件,使教师轮岗面临现实难题;城乡学校师资数量与结构的差异,造成交流轮岗落入"练兵"和"补缺"困局;政策执行过程不规范导致教师存在岗位适应顾虑。为实现政策目标,应致力于消除县域内教师交流轮岗面临的结构性、制度性障碍,补齐乡村学校师资数量与结构的短板,因地制宜探索多元化交流轮岗形式,并在政策实施中做到规范选拔和人文管理。     

PIC单片机特点及应用时的注意事项

比较了PIC单片机与MCS-51系列单片机的不同，PIC单片机的特点以及应用时的注意事项。对中断、看门狗、程序跑飞等问题的进行了探讨。     

《羚羊与秧鸡》的黑色幽默艺术探析

加拿大女作家玛格丽特.阿特伍德的最新力作《羚羊与秧鸡》具有深厚的生态关怀意识。小说以黑色幽默的艺术手法,深刻批判了人类对自然的疯狂掠夺和盲目破坏。拟从冷峻幽默的叙述风格及滑稽歪斜的人物形象两个方面,来探析黑色幽默艺术手法对生态灾难图景和文明末日景象的深刻揭示与反思。     

电子商务环境下网络隐私顾虑维度的评估与测量

网络隐私顾虑被认为是阻碍用户披露个人信息的重要影响因素并越来越受到学术界的重视。鉴于隐私是与情境相联系的多维、动态的概念，情境的变化会影响用户对隐私的理解，本文结合现实背景提出了电子商务环境下网络隐私顾虑的理论概念，在以往研究的基础上确定了网络隐私顾虑的构成维度，开发出初始的测量指标，然后通过3套独立的样本数据进行探索式因子分析、验证式因子分析和关联效度分析。结果表明量表具有良好的信度和效度，网络隐私顾虑由控制、收集、二次使用、错误、不当访问与补救5个维度和19个题项构成。     

基于云服务的科技期刊管理与发布模式

虚拟化技术的发展与云计算的兴起,科技期刊管理模式与内容发布形式的变化,使得科技期刊管理信息化有了新的模式与内涵。本文从数字化科技期刊的稿件管理模式、内容发布模式与增值模式等进行分析,为科技期刊数字化管理与网络化发展抛砖引玉,为基于云模式的科技期刊内容管理系统研究提供基础支持。     

Exploring factors affecting social e-commerce service adoption: The case of Facebook Gifts

Although social commerce is an important trend in practice, relatively few research studies have explored the impact of social commerce innovations launched within social networking sites. The deployment of a gift-giving service within a social networking site provides a unique opportunity to study the intersection of technological innovations and social norms and its potential to generate new revenue for ecommerce sites. Using Facebook Gifts as a real-world context for the study, we explore the factor structure of salient user beliefs influencing usage intention, and examine the relationships between beliefs and intention to use the service in a broader nomological network. Instead of adopting constructs from existing models, we started with the elicitation of salient beliefs and proceeded with successive stages of refinement to develop a suitable model. The empirical results show countervailing effects of perceived social utility and perceived convenience of the service on one hand, and low perceived value and privacy concerns on the other. A notable finding is the potential conflict arising between the expectations of effort associated with the procurement of a gift and the common perception of technology as reducing the required effort. The net result is that a technology-mediated gift service in the context of a social networking site runs counter to the social norms associated with traditional gift exchanges. This insight provides evidence of the dual challenge for social commerce initiatives. In order to be successful, new services in this area must leverage the potential of the technology as well as social practices.     

Differences in mobile health app use: A source of new digital inequalities?

This article provides a more differentiated understanding of mobile health consumers, and considers whether health app use may contribute to new digital inequalities. It focuses on factors associated with mobile health app use, and identifies which factors explain the use of different types of health apps. Data from a large representative sample of the Dutch population (N = 1,079) show that mobile health app users were generally younger, higher educated, and had higher levels of e-health literacy skills than non-users. Interestingly, different usage patterns were found for specific types of health apps. Theory and policy implications are discussed.     

基于1553B协议的总线控制器和远程终端的FPGA实现

研究了基于MIL-STD-1553B协议的总线控制器和远程终端的FPGA设计及其实现. 在一片FPGA上实现了总线控制器和远程终端2部分功能,给出了设计原理和不同配置模式下的响应流程. 结果表明,基于FPGA 实现1553B协议总线控制器和远程终端功能的方法可行.     

基于矩阵式遗传算法的集装箱码头堆场空间资源分配优化策略

为解决堆场空间资源配置问题(Storage Space Allocation Problem, SSAP),以箱区到泊位运输距离最小为目标,综合考虑岸桥、场桥等因素,提出一种基于矩阵式遗传算法(Matrix Genetic Algorithm, M-GA)的集装箱码头堆场空间资源分配优化策略.该方法首先建立基于装卸作业面的堆场空间资源分配模型;然后运用MGA求解扩展后的SSAP;最后分析不同遗传策略对遗传算法（Genetic Algorithm,GA)性能的影响,并以上海张华浜码头的案例验证该方法的优越性.     

基于MTK平台的无线语音终端设计

为了解决现代安防通信设备安装复杂、排除故障难度高的问题,提出一款基于MTK平台的无线语音终端,其以MTK8516嵌入式ARM开发板为硬件平台,Linux系统为软件平台,通过移植开源流媒体软件live555,以RTSP为主要通信协议实现语音通信功能。相比传统有线通信,无线语音终端有着诸多优点,如无需架设线路,信号范围广,不受地形影响,以及语音信号质量高、排除故障方便等。系统测试结果表明,该终端能够方便、快捷地满足人们在医院、办公场所等局域网内语音通话的要求,具有低成本、低功耗、高可靠性的优点。