建设项目财务评价程序设计简介

设计一套使用计算机辅助经济评价,建设项目经济评价工作量就可以大幅度地减少。经过反复研究与调试,编写了一运用于项目财务评价的程序。     

项目群管理研究

项目群管理起源于项目管理,但是项目管理并不能完全代表项目群管理。对项目群以及项目群管理的相关知识进行了详细的分析和总结,并提出了项目群管理面临的挑战以及需要解决的问题。     

Vibration monitoring—a programmed approach

Experience indicates that machinery vibration monitoring programs are most effective when planned in accordance with carefully established program goals and objectives. Methods are presented to determine the appropriate monitoring program for a given plant, key issues to address in program planning, and proven techniques for successfully implementing the program.     

推荐奖励计划对消费者推荐意愿的影响

推荐奖励计划是近些年发展起来的一种口碑管理工具,是企业通过一定形式的奖励来刺激已有顾客推荐新顾客的营销方案。本研究探索了推荐奖励计划在推荐数量限制、奖励力度、奖励对象和奖励物形式四个方面的设置对消费者推荐意愿的影响,检验了消费者意见领袖倾向的调节效应,并从感知推荐价值和感知社会风险视角探讨了推荐奖励计划对消费者推荐意愿影响的中介机制。     

Examining fidelity of program implementation in a STEM-oriented out-of-school setting

In the United States and many other countries there is a growing emphasis on science, technology, engineering and mathematics (STEM) education that is expanding the number of both in-school and out-of-school instructional programs targeting important STEM outcomes. As instructional leaders increasingly train teachers and facilitators to undertake new STEM focused programs, it will become especially important for these leaders to understand the concept of program fidelity, which seeks to examine the alignment between how a program is designed to be implemented and how that program is actually implemented in the field. This article discusses an exploratory study examining program fidelity within the geospatial and robotics technologies for the twenty-first century (GEAR-Tech-21) project, which is an out-of-school program teaching educational robotics and geospatial-related STEM concepts, across more than 20 different states, as funded by the National Science Foundation. The study results identified relationships related to program fidelity that were identifiable across various instructional modules, and associated with specific training and content characteristics.     

JAVA与多线程程序设计

介绍了进程、线程的基本概念及其优缺点,多线程在程序设计中的应用,JAVA语言多线程的定义、实现、同步方法、解决冲突的措施以及在编程中注意的问题。介绍了1个JAVA多线程实例程序,用以演示多线程在动画中的应用。     

Using the ASTM CHETAH program in chemical process hazard evaluation

The CHETAH program has proven to be of great utility in the assessment of reactive chemicals hazards associated with the development of new chemicals and chemical processes. At the Dow Chemical Company, the most frequent use of the program is for the estimation of heats of reaction. Reaction heats are often the single most important parameter in reactive chemicals evaluation since most “worst case” scenarios involve the instantaneous liberation of the reaction energy. Another common use of the program is using CHETAH's unique capability to predict the “explosive” behavior of a material or mixture solely from a knowledge of its molecular structure. Several examples of day-to-day use of the program are presented. Current development activity in the ASTM subcommittee which supports CHETAH are discussed. These include new hazard evaluation criteria, better thermodynamic property estimation techniques, and user friendly versions of the program.     

The effectiveness of temporary marginal cost subsidies

The principal aim of a marginal cost subsidy program is to accelerate improvements in economic performance that would occur anyway if anticipated changes in the relevant economic determinants were to realise. The potential effectiveness of such a program is studied in a framework that allows firms to have stochastic beliefs as to the timing of the change in the economic environment and the ending of the subsidy program. Because the subsidies are typically of a temporary nature and apply only to incremental changes, they create an incentive for firms to actually postpone changes in performance. Leaving the ending date unspecified at the time of implementation of the program may counteract this incentive and results in an early accelerative response. The improvement in economic performance near the specified termination date for a program with a known length, however, may well be more substantial.     

构建基于DLLs的可扩展软件结构

程序的运行完全绕开编译器是不可能的,但可以把那些来自DLL库、用于驱动设备的函数或其他目的性很强的函数从主程序中分离出来,实现一种可扩展的软件构架,即不在程序中直接调用函数,而是将需要调用函数写在一个脚本里,在程序运行时去读这个脚本,根据脚本的内容载入相应的动态连接库并执行其中的函数,这样就形成了一种灵活的软件结构,使软件的可伸缩性得到改善。本文介绍在C++源程序中嵌入汇编语句来构建基于DLLs的可扩展软件结构的方法,并提供部分源代码。     

Developing effective reverse logistics programs

A recent survey in the automobile aftermarket industry examines reverse logistics practices. The research focuses on two key issues: 1) the influence of program design characteristics, i.e., formalization, returns policy restrictiveness, and innovation, on program performance and 2) the differential influence of making versus buying reverse logistics program software. The results provide guidelines for managerial decisions relating to reverse logistics.     

Producer group participation in the trade adjustment assistance program for farmers before and after the American Recovery and Reinvestment Act of 2009

The Trade Adjustment Assistance for Farmers (TAAF) program was established in 2002 to help farmers adversely affected by surges in imports. The program has been underused by farmers and, as a result, the American Recovery and Reinvestment Act (ARRA) of 2009 redesigned the program by loosening the eligibility criteria and changing the structure of the cash assistance. This study examines the factors that incentivize producer groups to file petitions for the TAAF program and whether there exists a cross-program relationship between the TAAF and non-TAAF farm safety net programs in periods before and after the ARRA revisions. We find that, after the ARRA, participation in the program has more than doubled, but it is uncertain whether this increase in participation is a direct consequence of the ARRA revisions. In fact, results indicate that time-invariant characteristics of commodity groups are the most important factors of TAAF participation. We also find some evidence that incentives to mitigate negative price risk drove petitioning activities for the TAAF program before the ARRA. This is further confirmed by a cross-program analysis in which TAAF petitions increase when cash receipts decrease from the non-TAAF farm safety net programs that offer risk management schemes similar to that of the TAAF. After the ARRA, such a cross-program relationship is no longer observed. Indeed, the TAAF program after the ARRA subsidized producer training and business planning in response to import competition rather than simply providing a form of price insurance. This new focus might have substantially changed the drivers of participation.     

The Contingent Value of Responsive and Proactive Market Orientations for New Product Program Performance*

While the benefits of being market oriented are largely accepted, a group of scholars and managers remain skeptical. Marketing scholars have sought to counter the criticisms leveled against market orientation (MO) by arguing that it has both responsive and proactive dimensions. However, few studies have empirically examined the complexity of the effects of these dimensions on firm performance. Drawing on theories of resource‐based advantage and organizational search behavior, this article advances understanding by arguing that responsive and proactive market orientations have curvilinear effects on product development performance, that their interaction may be positively related to product development performance, and that their effects on new product program performance are moderated differentially by the organizational implementation conditions and marketing function power. Survey results of 175 U.S. firms indicate support for most of the hypotheses. Specifically, whereas responsive MO has a U‐shaped relationship with new product program performance, proactive MO has an inverted U‐shaped relationship with new product program performance. Contrary to the arguments presented here, the interaction of both orientations is negatively related to new product program performance. This study finds that both orientations are needed; however, new product program performance is enhanced when one is at higher level and the other is at lower level. Finally, responsive MO is only positively related to new product program performance under specific conditions such as when strategic consensus among managers is high. On the other hand, the positive effect of proactive MO on new product program performance is further strengthened when learning orientation and marketing power are high. Overall, this study suggests that the effects of responsive and proactive MO on new product program performance are more complex than previously theoretically argued and empirically examined.     

Reforming the lifeline program: Regulatory federalism in action?

This paper considers whether common national standards for determining participants' eligibility and designating service providers in the Lifeline program are preferable to a decentralized system where state utility commissions have greater influence over these program parameters. Two recent decisions of the Federal Communications Commission (FCC), a 2016 Order and its reversal in March 2017, on the designation of Eligible Telecommunications Carriers to provide broadband Lifeline service, centered on this question. Statistical analysis of program data demonstrates that state-by-state variations in enrollment may be attributed to state-level policy actions, after controlling for alternative demographic and economic explanations. This paper concludes that national standards may reduce state-by-state variations in program participation rates.     

基于概率积分法的顶管施工地表变形预测

为了预测顶管地表变形,分析顶管施工地层损失的原因,将概率积分法应用于顶管地表变形预测,在VC6.0下开发了相应的计算程序,可以给出顶管地表沉降、倾斜、曲率、水平变形、水平移动5种变形,以及绘制顶管地表变形的横断面图、平面等值线图和三维立体图。将该程序应用于广州某顶管工程地表变形预测,与实测数据对比,验证了本文方法和程序的正确性,从而为顶管地表变形预测提供了一种新方法。     

Industry self-regulation of food advertisement to children: Compliance versus effectiveness of the EU Pledge

This research examines the effectiveness of the EU Pledge, a self-regulation initiative of leading food companies at the European level, in restricting television advertising of food and drink products high in fat, sugar or salt (HFSS) to children. In October 2011 and 2014, television program of ten German television networks was recorded on a weekday and a weekend day. Data was analyzed using content and regression analysis. Advertised products were examined for their compliance with the nutrient criteria of the EU Pledge and the UK OFCOM nutrient profile model. The sample contains 88 h of advertising with a total of 697 child-targeted food and beverage advertising (CFBA). The results indicate that the number of CFBA broadcasted in television program declined from 2011 to 2014 for both Pledge signatory and non-signatory companies with an overall stronger reduction in children’s compared to non-children’s program. Our findings demonstrate that CFBA broadcasted in children’s program by Pledge members comply by and large with the EU Pledge nutritional criteria in 2014. However, in the same year the probability of CFBA aired by signatory companies in non-children’s program to meet the nutrient profile criteria of the EU Pledge was low. Furthermore, the majority of CFBA of signatory companies do not meet the OFCOM nutritional criteria even in the children’s program. Thus, the effectiveness of the EU Pledge in reducing children’s exposure to child-targeted advertising of HFSS foods and drinks is limited by the focus on children’s program and the relative lenient nutritional criteria agreed on by signatory companies. Based on our results we derive recommendations for industry and policy.     

Does a cassava research-for-development program have impact at the farm level? Evidence from the Democratic Republic of Congo

This paper evaluates the impact of a cassava research-for-development program on farm level outcomes. The program was implemented in the Democratic Republic of Congo from 2001 to 2009. We apply propensity score matching, Rosenbaum bounds on treatment effects, Altonji et al. method of selection on observables and unobservables and endogenous switching regression to farm survey data collected during the 2009 cropping season. We use these methods to test whether the R4D program has a statistically significant effect on outcomes of interest and if these are not driven by selection on unobservables. Using propensity score matching, we find statistically significant positive effects on household participation in cassava markets, adoption of improved varieties and crop management practices and household food adequacy; and no statistically significant effects on yields and profits. The results show that bias due to selection on unobservables is not severe enough to invalidate the impact estimates. Bias may still be a problem that is present in the analysis. But there is evidence that it is not substantial. Although the program does not have a statistically significant positive effect on yields and profits, the significant program effects on market participation, variety adoption, and food adequacy merit further promotion of the program since these positive outcomes tend to be pre-conditions for realizing long-term yield and profit benefits.     

Development of educational program for production manager leading new perspectives on manufacturing technology

In this paper, we consider the problems associated with the development and management of an educational program for manufacturing managers in leadership roles who are making contributions towards the creation of customer delight as well as customer satisfaction using manufacturing technology. The basic concept combines an intelligent knowledge-based approach with the kaizen activity program within the framework of value creation and comparative advantage models based on a network referred to as Academia, Business, Consultancy, and Government (ABC-G). This educational program, which reflects the characteristics of manufacturing technologies and practices in the Hokuriku District of Japan, was developed in 2005–2006 and the trial education was developed in 2005 and 2006, and a trial run of this program was conducted in 2006 and 2007 in close collaboration with local manufacturing companies and their employees. The results are informative of the effects of educating manufacturing managers in Japan and the problems that will have to be overcome for the continuous improvement of the program.     

并行环境下Java哈希机制的对比及重构

针对并行环境下出现的非线程安全问题,以哈希机制的Hashtable和ConcurrentHashMap的线程安全问题为切入点,设计了可改变线程总数和读写线程数的测试程序,分析了线程安全的ConcurrentHashMap和Hashtable的性能差异。根据性能差异,设计了从Hashtable到ConcurrentHashMap的程序自动重构插件,进而在Hashtable封装数据的情况下,通过对比传统多线程处理方式和Java8中的并行流处理方式的性能差异,分析了流处理方式相对普通多线程处理方式的高效性。对比结果显示,ConcurrentHashMap在并行程序中的性能要优于Hashtable。研究结果为多线程程序开发提出了解决非线程安全提供了较为可行的新思路,对于并行编程具有借鉴意义。     

利用DEBUG给计算机加把锁

编制了一个口令校验程序,并通过修改BIOS中的入口,与上述口令校验程序连接达到检验身分的目的。     

Airline loyalty (programs) across borders: A geographic discontinuity approach

We analyze brand loyalty advantages of national airlines in their domestic countries using geocoded data from a major international frequent flier program. We employ a geographic discontinuity design that estimates discontinuities in program activity at the national borders of the program’s sponsoring airlines in the Schengen area of Europe. We document that foreign consumers earn about 60% less miles and are 70% less likely to be a program member. Controlling for self-selection, we also find suggestive evidence for higher purchase frequency and transaction size by domestic members. These results imply that national airlines enjoy a large loyalty advantage in their domestic country, and contribute to an explanation as to why international flights by third country carriers are still a small share of the market.