Scale effects of R&D as reflected in earnings and returns

Using returns to scale as a conceptual foundation, we explore how R&D-related earnings performance and earnings variability depend upon firm size. We find that the positive association between the level of future earnings and R&D intensity increases with firm size, and that the positive association between the volatility of future earnings and R&D intensity decreases with firm size, consistent with R&D productivity increasing with scale. We also show that R&D scale is associated with lower market returns, consistent with the idea that R&D investment risk declines with scale.     

含硫油气井中的硫化氢气体检测和防护应急程序

文章详细分析了含硫油气井勘探开发中硫化氢气体产生的来源、硫化氢的主要检测方法,并重点论述了防护硫化氢的应急管理程序。     

基于教务管理平台的专业分流应用系统的设计与实现

专业分流是高校教务管理工作中一项重要的、具有复杂性的工作,随着高校招生规模的不断扩大,依靠传统手工的方式完成分流工作已不能够适应新形势下对专业分流的要求,设计开发一套基于教务管理平台的专业分流系统软件是非常有必要的。本系统采用分层设计思想、应用struts2开发框架,实现网上专业志愿填报、成绩计算、志愿成绩排名、专业分流录取等功能。本文给出了专业分流系统的设计和关键代码实现。     

Workplace organization and innovation

Abstract This study uses panel data on Canadian establishments to explore the relationship between the organization of work – in particular decentralization, information‐sharing, and incentive pay schemes – and innovation. Like other studies, ours finds a clear positive link between these factors. However, the data give strong indications that this relationship is not causal. We show that: (1) the correlation between workplace organization and innovation holds for information‐sharing but is much weaker for decentralized decision‐making or incentive pay programs, (2) controls for unobserved heterogeneity significantly weaken results, and (3) lagged variables give no clear evidence that organizational changes predate innovation.     

C2C电子商务卖家及其产品成交量的多层线性影响分析

论文以淘宝网为对象收集样本,运用多层线性模型研究价格、信息描述、默认排名、卖家信用度和卖家好评率对成交量的影响。结果显示成交量在不同商家间存在显著的差异,价格和信息描述会对成交量产生重要影响而默认排名影响不显著,卖家信用度和卖家好评率会对成交量产生显著的影响。     

“2＋1”工学结合工作站管理顶岗实习“1”的模式初探——以常州机电职业技术学院“2＋1”工学结合为例

推行工学结合，加大高职大学生实习的力度，是贯彻国家教育方针、路线、政策的重要举措之一。常州机电职业技术学院实施“2＋1”工学结合工作站管理学生的顶岗实习，即承担三年制高职最后“1”的教学、教育、管理，作为一种模式，是一种探索，也是一种创新。     

基于MIDP2.0的坦克大战手机游戏的设计

随着无线网络技术的不断发展,手机及其他无线设备的普及将成为一种趋势。由于的手机的携带方便,手机游戏又具有娱乐的功能,和J2ME技术的跨平台特性,使得越来越多的国内外厂商开始开发基于J2ME平台的无线应用服务。文章着眼于J2ME技术在手机游戏开发上的应用,在结合实际的开发经验与一些MIDP2.0新技术的基础上,讲述一款自主研发的基于MIDP2.0的坦克大战手机游戏设计。     

试探IGF2和H19基因与韦伯综合征的关系

笔者就韦伯综合征（Beckwith Wiedemannsyndrome,BWS）的特征,及IGF2与H19印迹基因各自生物学生性、印迹状况以及与BWS疾病的关系展开了详尽阐述。     

State wage-payment laws, the Pension Protection Act of 2006, and 401(k) saving behavior

I show empirically that state wage-payment laws, which forbid deductions from wages and salaries without the written permission of the employee, constituted a binding constraint on firms’ choices to adopt automatic enrollment in 401(k) plans prior to 2006.     

论B2C在适应性方面存在的问题

随着互联网和计算机的不断发展,电子商务已越来越受到大众的普遍关注。B2C在我国得到迅速的发展,但是在适应性方面存在的问题成为阻碍其发展的障碍。