合成氨生产3．0MP加压变换运行效果

本文介绍了合成氨生产中3．OMP（30kgf／cm^2）中低低变换工艺流程特点,分析装置运行中的优缺点,并对近几年来工艺、设备事故进行了分析,提出了改进方案。     

Exploration versus exploitation in technology firms: The role of compensation structure for R&D workforce

We investigate the relationship between a firm’s compensation structure and the extent to which its innovation is more exploration versus exploitation oriented. Specifically, we assess two aspects of a firm’s compensation design—horizontal dispersion within job levels and vertical tournament incentives between job levels. A six-year panel of compensation records of 671,028 employees working at 81 U.S.-based high technology firms between 1997 and 2002 are used to construct measures that characterize a firm's pay structure, which are linked to these firms’ patents filed in the U.S. We find that firms with higher-powered tournament incentives in vertical compensation structure report higher fraction of innovation directed towards exploration. Horizontal pay dispersion, on the other hand, shows a negative relationship with the exploration in firms where R&D employees’ age variance is low. In firms where R&D employees’ age variance is high, the negative relationship between horizontal pay dispersion and exploration is muted.     

结合DirectShow技术基于B/S架构的住宅小区视频监控平台设计

介绍了一种结合DirectShow技术的基于B/S架构的住宅小区视频监控平台的设计方案。该平台由监控端、服务器端和浏览器端组成,可实现多路监控、视频录像及回放和定点监控缩放等功能,且不需要安装额外的客户端软件和解码器,有效地提高了平台监控的集中管理效率和用户使用的便捷性。     

医药卫生期刊广告经营方法及策略

随着我国经济的快速发展,我国医药卫生科技期刊也取得了很大的发展。医药卫生期刊广告在强化期刊信息功能、促进医药产品市场推广和提高期刊经营效益方面具有不可替代的作用。但从总体上看,我国医药卫生广告市场还没有形成可持续发展的营利模式。本文结合中华医学会杂志社的广告经营情况和方式,就医药卫生期刊广告的经营方法和策略,发表一些看法,供探讨。     

基于B／S模式的研究生网上选课系统的设计与实现

文章论述了基于B/S模式的研究生网上选课系统的设计与实现方法。经过测试,基本实现了网上的研究生选课、选课管理、选课查询等功能。     

基于.Net的开放式实验室管理系统的设计与实现

对现有的实验室管理系统进行分析和研究,采用.net组件技术、B/S体系结构和SQL Server 2005数据库设计开放式实验室管理系统,并阐述设计的关键技术.     

大学生学习参与特点变化的实证研究

“心智”“美德”导向下的学习参与模式深入地刻画了东西方学生学习参与行为的特点,但是随着世界文化交流的推进,这种基于社会文化所形成的学习特征呈现出融合的趋势。文章基于实证研究发现,当代中国大学生学习参与行为可以被划分为五种类型,即全面参与型、独立学习型、人际友好型、消极游离型和心智参与型。其中,独立学习型和心智参与型是“心智”“美德”导向下学习参与模式的衍变和融合。根据方差分析和回归分析发现,促进东西方文化优势的融合,培养既保有中国传统文化中勤奋刻苦、谦让包容的特质,又吸收西方文明中独立探索、求知善思优势的全面参与型学习者是高等教育未来发展的关键。     

Learning statistics with interactive pictures using R Shiny: Generally preferred,but not generally advantageous

Constructing interactive web apps has become more accessible for instructors, for example, by using the R package Shiny. Here we explored learners' preferences and the efficiency of interactive simulations versus static pictures in acquiring statistics knowledge of Cohen's d and standard normal distribution. Results revealed that students' spontaneous interaction with pictures was infrequent (pilot study, N = 26). While prompts (Exp. 1, N = 152) effectively ensured the manipulation of simulations, student exposure to interactive simulations led to longer learning times though similar test performance compared with student exposure to static pictures. Multiple interactive representations led to lower test performance than single interactive and static representations (Exp. 2, N = 117). Though no advantage was gained regarding learning outcomes, participants preferred the interactive variant (Exp. 3, N = 119). Taken together, this study demonstrates that the superiority of interactive pictures cannot be assumed to hold in general. Further work should evaluate how mental model construction can be effectively scaffolded by interactive simulations.     

元数据登记系统

本文介绍元数据登记系统的起源、作用和基本结构，并给出了几个已经在使用中的系统实例。     

QQ群在大学英语网络辅导答疑中的应用研究

现今大学英语教学中传统的面授辅导答疑局限性明显,进行网络辅导答疑是网络时代的要求,是师生共同的选择。笔者在从理论上构想了将QQ群应用到大学英语网络辅导答疑的各个环节中的操作流程之后,进而通过教学实验证明QQ群在大学英语网络辅导答疑中的正能量效应,旨在让师生克服大学教学环境中的种种不便,更有效地开展课外的辅导答疑。