基于Internet/Intranet的自动考试系统设计与实现

介绍利用 Internet/Intranet技术和数据库技术设计实现网上自动考试的系统。该系统采用当前流行的 Browser/Sever模式 ,利用 ASP编程实现 ,整个系统采用 SQLServer2 0 0 0 +Windows2 0 0 0 Server+ASP模式开发。系统投入运行后节省了以往考试所需的大量人力、物力资源 ,大大减轻了教师出题、组卷和改卷等繁重的工作 ,既提高了教师的工作效率 ,也促进了学生的学习效率。     

DQL800/1250.30型堆取料机的使用与改进

DQL800/1250.30型堆取料机是一种自动化水平较高的大型装卸设备,因存在许多问题而不能正常工作。通过对其供电方式改进、悬臂皮带跑偏治理、增加中心溜槽电保温、斗轮收缩盘连接方式改进等技改,使堆取料机较好满足了生产要求,并对相应的改进措施进行了详述。     

The presence of a separate COO/president and its impact on strategic change and CEO dismissal

This study focuses on the leadership structure at the very top of a firm. Specifically, it examines how the presence of a COO/president, who is separate from the CEO, affects strategic change and CEO dismissal. With longitudinal data on the tenures of 207 CEOs, results suggest that the presence of a separate COO/president increases the magnitude of strategic change under conditions of low firm performance but it decreases the magnitude of strategic change under conditions of high firm performance. In addition, the presence of a separate COO/president increases the likelihood of CEO dismissal under conditions of low firm performance, and this effect is stronger when the magnitude of strategic change is high; but it has no impact on the likelihood of CEO dismissal under conditions of high firm performance. These results suggest that the impact of the presence of a separate COO/president on strategic change and CEO dismissal varies across different organizational contexts. Copyright © 2006 John Wiley & Sons, Ltd.     

The economic production quantity (EPQ) with shortage derived algebraically

Previously, in several papers and textbooks, the classical economic order quantity (EOQ) and the economic production quantity (EPQ) formulas for the shortage case, have been derived using differential calculus and solving two simultaneous equations (derived from setting the two first partial derivatives to zero) with the need to prove optimality conditions with second-order derivatives. In a previous original piece of work, a new approach to find the EOQ with backlogging using some slight algebraic developments appeared. This paper extends the mentioned algebraic approach to the EPQ formula taking shortages into consideration within the case of only one backlog cost per unit and time unit. The final expressions provide the same formulas that are available in the classic textbooks on inventory theory.     

武器装备采购的价值分析研究

本文运用ＶＥ原理,着眼于提高武器装备军事经济效益,从研制阶段的观念转变、坚持ＶＥ原则、开展ＤＴＣ设计、控制研制周期等方面进行了探讨,目的是从根本上提高武器装备采购费的使用效益     

多层次模糊评价法在科技招标项目评标中的应用

文章基于SMART准则,应用多层次模糊评价法对科技招标项目的评标体系与方法进行了研究,并应用实例对评标体系的设立、评价指标权重的确定、中标单位的模糊优选进行了说明。     

The association between dividend payout and firm growth: Australian evidence

We report that whereas firms with high earnings distributions tend to have low‐to‐moderate growth (consistent with conventional theory), firms with low earnings distributions run the range between high and low performers. We interpret our findings for firm growth and payout policy in relation to the firm's location on the Boston Consulting Group (BCG) matrix that combines high/low growth with high/low market share. Our findings suggest that the market has difficulty in distinguishing between these types of firms. A concern is that investor preferences as an outcome may be focussed on dividend‐paying firms at the expense of younger growing firms in need of retained earnings.     

Currency futures market in India: an empirical analysis of market efficiency and volatility

As the Indian currency futures market has been in existence for over 7 years, this paper analyses the effectiveness of the 1-month USD/INR currency futures rates in predicting the expected spot rate. The volatility of the USD/INR spot returns was also analysed. Modelling volatility of the USD/INR spot rate using a generalized autoregressive conditional heteroskedasticity (GARCH) and exponential generalized autoregressive conditional heteroskedasticity (EGARCH) model indicated the presence of volatility clustering. Using multivariate GARCH models such as the constant conditional correlation and dynamic conditional correlation, signs of a volatility spillover between the USD/INR spot and currency futures market were also observed.     

Identifying M&A targets and the information content of VC/PEs

The information gap in the M&A market hinders acquirers from effectively identifying high-quality targets. We examine whether VC/PEs convey information content in the M&A market and whether acquirers can use such information to identify high-quality targets. We show that VC/PEs have significant information content and can signal high-quality target companies via “certification”. When acquirers lack acquisition experience and targets are located in inferior information environments, VC/PE “certification” is more significant. The better reputation a VC/PE has, the more information it conveys. Syndicate VC/PEs convey stronger information than independent VC/PEs. We also find that acquirers do not pay higher premiums for high-quality targets. Overall, our results suggest that VC/PEs have value relevance in the M&A market, confirming their “certification” role. We present means for acquirers to select high-quality targets and investors to build efficient portfolios.     

Sampling method for monitoring the alternative accommodation market

Tourism is an extremely competitive industry where effective destination management is necessary to compete. One of the main destination management stakeholders is the hotel industry. Since the advent of the Internet websites that facilitate the sharing economy, the hotel industry has had to compete with an alternative accommodation market. This alternative market is difficult to monitor as there is no official data. Current research works on developing methods for calculating tourism metrics for a destination based on digital footprint with the objective of offering figures to complement official statistics. The objective of our research is to develop a method to monitor the alternative accommodation market based on data collected from Airbnb. This paper reports the results of the first step: the design of a sampling method for data scraping from this website that provides a representative sample of the accommodation offer of the Basque Country distributed through it and its prices. The results show that the length-of-stay (LOS) parameter of the queries to the website is key to obtaining a representative sample of the accommodation offered through this channel. A sampling method based on the representative values of LOS inferred from a data sample is proposed.