MRPII与JIT结合中的信息与激励问题

在研究ＪＩＴ和ＭＲＰＩＩ的结合问题上,二者的文化能否结合问题往往为人们所忽视。本文从信息结构和激励机制的角度对制约ＭＲＰＩＩ与ＪＩＴ效率的文化因素进行了研究,在此基础上,本文提出了基于Ｉｎｔｅｒｎｅｔ技术的、吸收了 ＪＩＴ与ＭＲＰＩＩ信息结构各自优点的网络信息结构模型,以及与此模型相对应的激励措施。     

This Offer Self-Destructs in 3… 2… 1…: Improving the Effectiveness of “That's-Not-All” Techniques in Promotional Emails

This study investigated the “that's-not-all” (TNA) technique as a promotional strategy and offered suggestions for maximizing its effectiveness. The research contributes to current literature by addressing two moderating variables and their influence in aiding the process, time limitation, and internal reference price. Results denote a significant TNA impact overall on attitudes and perceptions of offer value. Ads featuring a 7-day time limit were even more influential on study participants, yet product internal reference price did not significantly impact participant attitudes or perceptions. Additionally, five focus groups were analyzed to assess consumer perceptions of TNA techniques and implications for the research.     

一种宽频带低功耗的数字式微波频率合成器

本文介绍的数字式微波频率合成器,采用直接分频锁相方式,使压控振荡器和分频器直接工作在微波频段。其突出特点是输出频率范围宽(750～950MHz),频率稳定度高(-25℃～+50℃内,优于1×10~(-5)),功耗低(<0.7W),电路简洁,体积小。本文主要介绍该微波频率合成器系统方案设计、工作原理及有关电路和测试结果。     

三种开关型电源

本文分别介绍了采用TL497专用集成电路器件的升压、降压和反极性型的三种开关电源电路,并对其设计和运用也作了阐述.     

基于模拟退火算法的混流生产线投产排序研究

建立了混流生产线投产排序数学模型,并运用解大规模组合优化问题,特别是NP组合优化问题的有效近似算法--模拟退火算法对该问题进行求解。通过算例比对,该方法在求解质量上优于目标追迹算法,从而证明模拟退火算法是一种能够有效解决混流生产线投产排序问题的新方法。     

多重直序扩频信号的相关接收

本文说明了利用伪随机(PN)码的相关特性,进行多重直序扩频信号相关接收的基本原理。指出了这项技术在卫星多址通信中的重要意义,并对实验结果进行了分析,得出了一些重要的结论。     

FORTRAN语言及汇编语言在坐标测量中的混合编程技术

本文论述了Fortran在坐标测量数据采集系统以及图形输出系统中与汇编语言的程序连接及调用方法,讨论了利用Fortran语言进行测量样本点的拟合、画线以及图形输出问题,给出了编程方法及实例。     

An exploratory study of the influences that compromise the sun protection of young adults

This paper reports on an exploratory research project designed to gain a deeper understanding of the influences on ultraviolet radiation (UVR) behaviours among high‐risk young adults to determine what compromises the adoption of protection measures for this group. A dual approach using focus groups and the Zaltman Metaphor Elicitation Technique was used to provide personal narratives related to UVR behaviour for tertiary education students. Results from both ‘conversations’ were content‐analysed using an iterative ‘bootstrapping’ technique to identify key themes and issues. This exploratory research identified a number of key themes including effect on mood, influence of culture, the value of tans, unrealistic optimism, risk‐orientation, and the role of experience. This group felt that they not been targeted effectively by public health campaigns and did not fully understand the dangers of high‐risk UVR behaviours. Although a number of previous studies have investigated the relationship between knowledge and behaviour, and largely concluded that increases in knowledge do not lead to increases in adoption of protection practices, the preliminary findings of this study reveal that the knowledge and perceived self efficacy of protective practices is extremely high, what is lacking is the perceived threat and thus the motivations to adopt such behaviours. The conclusions drawn from this research indicate that there are a variety of important influencing factors that compromise UVR behaviours, in particular, the lack of perceived seriousness and severity towards long term consequences such as skin cancer. The recommendation to address the imbalance of ‘perceived threat’ and ‘outcome expectations’ is to focus on increasing knowledge of skin cancer, particularly susceptibility to skin cancer and the severity of the condition.     

The Technique of Drafting An English Commercial Cable

Today telex and cable are two important means usod in communication with customors abroad. In telex,as it is not chargod by the number of words but by the minute,more words can be used to express our idea,so it is less difficult for our students to learn,while in cable we,in order to save money,     

关于同轴线最佳尺寸比的讨论

本文对国内外微波技术书籍中公认的同轴线最佳尺寸比提出了异议,并给出了电特性更好的新的最佳尺寸比值。