Context matters: Diversity's short‐ and long‐term effects in fortune's “best companies to work for”

Research summary: Previous research has examined the racial diversity‐productivity relationship in corporations with an evident high commitment to minority programs, Fortune's “Best Companies for Minorities.” To assess generalizability, we replicate this research using a different context of high organizational‐employee value congruence, Fortune's “Best Companies to Work For.” We are not able to find evidence for the curvilinear relationships previously found, but do uncover a linear negative relationship between racial diversity and short‐run performance. Managerial summary: Using Fortune's “Best Companies for Minorities,” previous research found that racial diversity affected both firm productivity and Tobin's q. To see if we could find these results in a different group of firms, we replicate this research using a sample drawn from Fortune's “Best Companies to Work For.” The former sample is distinguished by high commitment to minority programs, while the one used here stresses high congruence of values between the organization and all its employees. We are unable to replicate the relationships previously found, however, but do find that increasing racial diversity had a negative effect on firm productivity. Copyright © 2016 John Wiley & Sons, Ltd.     

葡激酶蛋白质工程研究进展

近年来,葡激酶的蛋白质工程研究取得了快速进展,主要介绍了葡激酶分子的高级结构、纤溶酶原激活机制、免疫原性的研究进展以及新型葡激酶突变体的分子设计和改造的研究概况。     

响应面法优化怀山药水溶性蛋白提取工艺的研究

以怀山药为原料提取水溶性蛋白,以水料比、提取温度、提取时间为考察因素,以蛋白含量为响应值,采用响应面分析法,比较水料比、提取温度、提取时间及提取次数对其提取率影响。确定最佳工艺条件:水料比8.25∶1,提取温度35.18℃,提取时间60.26 min,提取次数1次,提取率可达到64.9%。     

Egg utilization and consumer acceptability of egg dishes prepared with commercial egg powder in rural Mkhambathini,South Africa

Eggs have a potential to alleviate protein‐energy malnutrition among rural communities. Unfortunately, eggs are perishable and most rural communities in South Africa have very limited access to effective food storage and preservation facilities. Utilization of eggs by rural households could increase if they were available in the form of egg powder, which is convenient and shelf‐stable. However, rural communities in South Africa are not familiar with egg powder and therefore it is not known whether it would be acceptable to them. The aim of the current study was to explore the utilization of eggs by rural households of Mkhambathini, South Africa, and assess the potential for using egg powder in popular egg dishes. A total of 110 household representatives completed a survey questionnaire, 50 participated in focus group discussions and 51 in sensory evaluation of egg dishes (sandwich and relish) prepared with commercial egg powder. The households perceived eggs as an important, nutritious food, but cultural beliefs, ineffective storage facilities, and limited market access restricted their utilization. Results of sensory evaluation showed that the acceptability of the egg powder dishes was similar to that of their fresh egg counterparts. Overall, the study demonstrates that there is a great potential for rural households to replace fresh egg dishes with egg powder dishes.     

从药厂废水中回收粗蛋白的研究

通过一系列实验,选出一种高效、无毒的絮凝剂——氯化铁,并确定了最适宜的回收工艺条件：原料液等电点的ｐＨ值为３５,它与１ ｍ ｏｌ／Ｌ氯化铁溶液的适宜体积比约为（８０～１３０）∶１。同时讨论了温度对絮凝效果的影响。通过与自然沉降法进行比较,说明本方法对粗蛋白的回收效果显著。     

From New Order to Regional Autonomy: Shifting Dynamics of “Illegal” Logging in Kalimantan, Indonesia

In recent years there has been a tendency to view the seemingly irremediable spread of “illegal” logging in Indonesia in isolation, or as a result of disassociated and premeditated criminal acts. This paper proposes a different view of the problem by discussing the changing dynamics of the “illegal” logging sector in the two districts of Berau, East Kalimantan and Kotawaringin Timur, Central Kalimantan. It suggests that “illegal” logging is not a simple case of criminality, but a complex economic and political system involving multiple stakeholders. Furthermore, “illegal” logging is not a stationary condition that can be effectively dealt with through coercive or repressive measures alone. Rather, it should be viewed as a dynamic and changing system deeply engrained in the realities of rural life in Indonesia. Regional autonomy has also created a supportive environment for the “illegal” logging trade and allowed it to gain resilience.     

抗阻训练对不同年龄骨骼肌肌肉蛋白质合成的影响

本文通过文献综述法论述了骨骼肌蛋白质的转换与营养摄入的关系,以及青年与老年人蛋白代谢的差异和抗阻运动对蛋白代谢的影响。     

蛋白质分离纯化和蛋白质结晶的研究方法

文章主要对蛋白质的分离纯化的各种原理和方法作了简要的概述,同时简单的介绍了蛋白质结晶的方法及影响因素。     

The stock performance of America's 100 Best Corporate Citizens

We consider the stock performance of America's 100 Best Corporate Citizens following the annual survey by Business Ethics. We examine both possible short-term announcement effects around the time of the survey's publication, and whether longer-term returns are higher for firms that are listed as good citizens. We find some evidence of a positive market reaction to a firm's presence in the Top 100 firms that are made public, and that holders of the stock of such firms earn small abnormal returns during an announcement window. Over the year following the announcement, companies in the Top 100 yield negative abnormal returns of around 3%. However, such companies tend to be large and with stocks exhibiting a growth style, which existing studies suggest will tend to perform poorly. Once we allow for these firm characteristics, the poor performance of the highly rated firms declines. We also find companies that are newly listed as good citizens and companies in the Top 100 but outside the S&P 500 can provide considerable positive abnormal returns to investors, even after allowing for their market capitalization, price-to-book ratios, and sectoral classification.     

Evidence‐Based Scope for Reducing “Fire‐Fighting” in Project Management

This paper reviews the problems of project management as reported by 1,879 individuals employed in the construction, manufacturing, process, and service industries in North‐West Europe over 23 years. Data obtained by a written questionnaire confirms that organizational relationships need the most attention. The data exhibits no trends over the 23 years. It indicates that many of the problems of project management are “institutional”; in other words, they are due to organizational cultures rather than inherent in project work. The evidence supports the view that poor discipline at the front‐end of projects results in too much “fire‐fighting” in project execution to overcome problems that could have been prevented. Prevention of these institutional problems requires action at the level of corporate governance, above the level of project management.