有关声速测量实验中几个问题的探讨

该文讨论了超声波声速测量实验中出现的几个问题，并通过数值计算，说明了超声波能量随距离的增大而形成的衰减趋势，并对影响测量精度的因素进行了讨论。     

Effects of time pressure,type of shopping,and store attributes on consumers’ satisfaction with grocery shopping

The aim of this study is to investigate whether satisfaction with grocery stores is affected by type of grocery shopping in conjunction with time pressure, and which attributes are important for satisfaction. Fictitious grocery stores are constructed according to a fractional factorial design by varying access, price level, supply quality/range, and service quality. In an Internet survey, 1023 Swedish consumers rated satisfaction with major vs. fill-in shopping imagining they were under high or low time pressure. The results showed that satisfaction is higher for fill-in shopping than major shopping, that time pressure has no effect on satisfaction, and that price level, service quality, and product quality/range are more important for satisfaction with major shopping, whereas access is more important for satisfaction with fill-in shopping. It is also found that the importance of attributes for satisfaction depends on type of shopping more than on individual characteristics.     

P-Star模型与通货膨胀压力测量

估计通货膨胀压力的常用方法是运用实际产出与潜在产出之间的缺口同价格变化率之间的关系来进行的,这种方法在国内已经很好地得到了应用,国内也有学者运用货币流通速度与其趋势值之间的偏移率来测算通货膨胀压力,但20世纪90年代以来在国际上得到较为广泛应用的P-Star模型国内还没有尝试。对中国数据的实证分析表明,运用P-Star方程来估算通货膨胀压力的变化,可以为国家价格总水平的调控提供参考。     

基于水足迹的大樟溪流域生态补偿研究

水足迹理论与方法在流域生态补偿中的应用是当前生态补偿领域研究的热点与前沿问题。在已有水足迹理论的研究成果的基础上,引入水资源相关评价指标对原有模型进行修正,构建符合流域生态补偿情况的水足迹模型。以根据大樟溪流域生态补偿为例,核算大樟溪上游水源区以及下游受水区的水足迹,同时运用机会成本法对流域上游地区的水生态环境保护的直接投入和限制当地发展而损失的间接投入进行核算。结果表明,水足迹的生态补偿模型可以将流域水资源的利用情况与水生态保护的经济活动联系起来,可为流域生态补偿标准的核算提供客观的方法。     

近十年陕北耕地资源变化与粮食安全分析

该文以包括榆林市和延安市的陕北地区为研究对象,对陕北地区1996～2006年耕地动态变化与粮食生产情况进行分析研究。选择最小人均耕地面积和压力指数模型法,在分析陕北地区1996～2006年间耕地、人口、粮食动态变化的基础上,总结了该区域最小人均耕地面积和耕地压力的变化特点:陕北地区最小人均耕地面积的平均值是0.219hm2,耕地压力指数的平均值K是1.389。K值远大于1,因此耕地压力较大。在以上基础上提出了保障陕北地区耕地动态平衡与粮食安全生产的一些建议。     

我国劳动分配比例的变动趋势与影响因素——基于中国省级面板数据的分析

本文分析了我国劳动分配比例的变动趋势与影响因素,并运用1996-2006年省级面板数据估计了一个计量模型,估计结果表明,我国劳动分配比例下降的根本原因是二元经济条件下的巨大就业压力、不断提高的劳均资本和人力资本、工会在保护劳动者权益方面的缺位.该结果对不同的模型设置和样本选择具有很强的稳健性.进一步的研究还发现就业压力和劳均资本对劳动分配比例的负面影响在低发展水平组更大.     

山东省经济环境胁迫区划分研究

由于山东省各市自然、社会经济和环境条件不同,使得各市在经济发展速度、资源消耗程度、环境质量等方面存在明显差异,导致经济与环境关系发生区域分异。为了准确的把握山东省各市的资源消耗、环境恶化对经济的胁迫程度情况,文章选择有代表性的指标,采用定量分析的方法,计算了各市经济环境胁迫压力综合指数,进行了经济环境胁迫区的划分,并通过对不同类型区的研究与对比,分别找出其各自的特点及发展中存在的问题,为准确制定各类型区今后的发展政策提供参考。     

FY型粮食装卸机的设计与计算

介绍了ＦＹ 型粮食装卸机的工作特性和具有粮食分级功能的中间分离仓;可自动调节补风量大小的喂料器;可伸缩、弯转的组合风管等主要部件的结构、特点及主要性能参数的计算方法。     

遵义市红色旅游与生态旅游资源整合开发研究

遵义市拥有丰富的红色旅游资源和生态旅游资源,如何通过旅游资源整合开发,形成红色旅游与生态旅游相辅相成、共同繁荣的良性互动局面,促进二者的可持续发展,是一个值得探讨的问题。文章分析了遵义市红色旅游与生态旅游资源整合开发的必要性和可行性,并提出了整合开发的措施。     

The Reciprocal Relations of Pressure,Work/Family Interference,and Role Satisfaction: Evidence from a Longitudinal Study in Taiwan

The aim of this longitudinal study was to explore reciprocal relationships between work/family pressure, work/family interference, and work/family satisfaction among Taiwanese employees (N = 310). All study variables were assessed three times. We found that within the work domain, earlier work pressure caused later work‐to‐family conflict (WFC), while earlier WFC reduced later job satisfaction. We also found that earlier WFC caused later work pressure, while earlier job satisfaction reduced later WFC. Similarly, we found that within the family domain, earlier family pressure caused later family‐to‐work conflict (FWC), while earlier FWC reduced later family satisfaction. We also found that earlier FWC caused later family pressure. In addition, family pressure and family satisfaction had reciprocal relationships over time. Together these longitudinal and reciprocal relations strongly support our hypothesized feedback loops linking pressure, work and family conflict, and role satisfaction, within each of the work and family domains. We made specific suggestions on breaking these vicious cycles to effectively manage both the work and family roles.