螺旋振子谐振腔滤波器的设计与应用

简要介绍了螺旋振子式腔体滤波器的原理及设计方法，给出了一个100MHz滤波器实例和在频标比对器中具体应用电路。     

Cigarette pack and advertising displays at point of purchase: community demand for restrictions

Tobacco promotion influences tobacco consumption. Traditional forms of tobacco promotion have been heavily restricted in response to the harmful effects of tobacco. Tobacco displays at the point of purchase are increasingly important as a means of communicating brand imagery for the tobacco industry, especially when advertising is restricted at these points. Previous research has demonstrated that children exposed to tobacco advertising at the point of purchase have inflated perceptions of availability, use and popularity of tobacco. Internationally, laws are being debated and implemented to prohibit or restrict the display of tobacco at the point of purchase or put tobacco out of sight. Such measures would reduce tobacco product exposure and, hence, tobacco marketing among youth and the community. In South Australia, a ban on all cigarette advertising at the point of purchase was introduced in 2005. This study was designed to assess community support for restrictions on cigarette displays and advertising at the point of purchase. A telephone survey was conducted with a random sample of 2026 South Australian adults (aged 18 years and over) in July 2005. Overall, 63% of the community approved of a hypothetical total ban on cigarette displays at the point of purchase, with over three‐quarters believing this should happen in the next 12 months. A further 24% believed that cigarette displays should be restricted and 82% would approve of a ban on displays in stores that sell confectionary. Only 7% of adult smokers reported making their decision about the brand of cigarettes to buy at the point of purchase and 90% made their decision before they even entered the shop. The results strengthen arguments that cigarette displays are not necessary to maintain brand loyalty or to encourage brand switching of established smokers. Instead, the results make arguments more credible that cigarette displays normalize and promote smoking among young people and may also promote unplanned purchase or increased consumption among less frequent smokers or former smokers. Placing cigarettes out of sight would be unlikely to impact on brand choice for most smokers, who have already made up their mind before they enter the store.     

一种新的超市门店需求预测方法与库存管理模型

探讨了VMI模式下如何确定连锁超市门店的订货点的问题。利用专家判定法改进了基于历史数据的零售商需求预测模型，并在此需求预测模型基础上提出一种具有时间和数量柔性的自动补货策略模型。最后通过实倒分析表明，研究结果有助于帮助企业在快速响应市场需求的同时。降低企业的成本，提高企业的竞争力。此模型将在某连锁百货的订货系统中得到应用。     

中国特色社会主义之“特色”剖析

建设中国特色社会主义是当今中国的时代主题，研究中国特色具有十分重要的理论意义和实践意义。“中国特色社会主义”命题的提出具有特定的理论起点、历史起点和现实起点；在长期实践中形成了“中国特色”的经济、政治和文化发展制度安排；在发展战略上根据中国的实际形成了分“三步走”基本实现现代化的发展战略，并不断丰富和发展。     

基于频率响应屏蔽技术的采样率变换新结构

介绍了频率响应屏蔽(FRM)技术在采样率变换技术中的应用,分析了FRM的简化结构——内插滤波器的设计方法。将此滤波器应用于采样率变换中,并结合多相滤波思想提出了一种高效的FRM采样率变换结构,此结构能极大降低采样率变换实现复杂度。最后通过设计实例,验证了此结构的高效性。     

R软件及其在标准化中的应用

标准化工作中经常需要运用统计方法进行数据收集和分析，但由于统计方法应用的复杂性和专业性，使得方法应用受到了限制。随着统计软件和计算机技术的发展，统计方法应用得到了简单化。文章介绍了一种近年来普及速度非常快的免费应用统计软件——R软件的简单应用，并给出了几个应用实例，便于实际应用者理解和学习。     

Instant‐count sampling: A technique for estimating recreation use in municipal settings

Instant‐count sampling was tested on four municipal recreation areas in Athens, Georgia. Users were counted instantaneously on the areas at randomly selected times. From these counts, estimates of use and standard errors were achieved with a minimum of sampling time required. Errors ranged from 10.2 to 37.8 percent of estimated use and did not exceed 23.6 percent for total use.     

公平偏好下基于投资者主导的流域生态补偿激励契约设计

十四五规划强调要进一步健全生态补偿机制,实现生态文明建设新进步.为促进流域生态补偿激励机制的进一步优化,基于个体公平偏好的视角,构建基于流域生态补偿投资者为主导的动态博弈模型,探讨生态系统服务提供者和投资者共同组成的激励契约优化设计问题.研究发现:相较于投资者无公平偏好的情形,在其具有公平偏好时,补偿双方的整体效用均随补偿系数的增加而有所降低;当流域生态补偿双方均具有公平偏好时,双方的整体效用会随着补偿成本补贴系数的增加而增加;流域生态补偿投资者的公平偏好是确保自身效用最大化的一种手段.     

动态井点降水在沈阳地铁东～滂区间盾构井的应用

地表管井动态降水在沈阳地铁东~滂区间盾构井的应用,降水井的间距、井深、泵型、下泵深度、水泵开启时间控制,通过动态调整以上参数完成盾构井基坑开挖施工。     

对建设遵义车务段战略装车点的认识与思考

战略装车点是全面改进货运作业流程的高效运输与管理模式。结合遵义车务段规划、建设战略装车点的实践,探讨如何通过科学选点和布局、改善作业设施、充分运用现代信息技术,建设战略装车点,提高运输综合效率。