中国入境旅游业对危机事件响应的区域差异研究

危机事件给入境旅游业带来负面影响,准确分析各种危机事件对我国不同区域的影响差异具有现实意义。通过时间序列法和变异系数进行分析,结果表明,在区域灾害高发期或者灾害发生年,特定时段入境旅游流占区域全年比例往往低于同期全国相应水平,对生命安全造成威胁、引起交通中断的灾害对区域入境旅游流影响较严重。我国东部地区入境旅游业对危机事件反应较为缓和,抗御危机事件能力较强且恢复速度快;西北部干旱地区以及西藏、海南入境旅游业对危机事件反应较为敏感,抗御危机事件能力较弱且恢复速度慢。北京、上海入境旅游业一直走在全国前列,但是易受危机事件干扰。政治与疾病事件对入境旅游业与国内旅游业均造成严重打击,同时多种危机事件叠加也会对入境旅游业造成较大影响,与国内旅游业相比入境旅游业对危机事件反应更为敏感。     

A NOTE ON SAMPLING WITH AND WITHOUT REPLACEMENT

Upper bounds are given for the total variation distance between the distribution statistics of random samples with and without replacement from a finite set.     

有保温层拱坝变化温度场的计算

大体积混凝土的温度应力是一个十分重要的问题。寒冷地区拱坝的温度应力大于水荷载的影响。为了降低温度荷载,在拱坝下游面粘贴聚苯乙烯塑料板作为永久保温层,在文献[2]、[3]研究基础上,提出了有保温层拱坝变化温度场的计算方法。     

Romania’s accession to the EU: Short-term welfare effects on food consumers

This paper focuses on estimation of the welfare effects on different Romanian households of assumed food price changes as a result of EU accession. Using the Slutsky compensating variation approach, results suggest that these changes affect welfare differently for various categories of households. Although on average the welfare loss is 2.6%, a higher impact is estimated for low-income groups. However, the relatively high share of home-produced consumption of food diminishes these impacts, in particular for rural households, and somewhat smaller monetary amounts would be required if compensation is paid.     

关于金融控股公司微观层面的文献综述

国际上,许多学者对金融机构集团化进行了理论或实证研究。在研究过程中,由于角度各异,研究的方向各有侧重。即便是方向一致,也经常因为研究方法的不同而结论迥异。本文将这些文献分为"经营绩效"分析、成本(规模经济/范围经济/X效率)评估、"生产效率"的测度、经营风险和管理以及金融控股公司(FHC)整合前后的价值变化等五个主要领域,力图在每一领域中展示比较有代表性文献的研究结论并进行简短评论。     

语言变异的社会心理成因分析

语言变异是社会语言学研究的语言现象之一.对此,国内外许多专家学者分别从语音、词汇、语法层面、社会文化因素等多方面进行过研究.从社会心理语言学的角度来看,追新求异心理、从众心理、避俗求雅心理、男女性别差异心理导致了语言变异.     

Cultural distance in international business and management: from mean-based to variance-based measures

Extant practice in international management is to measure cultural distance as a nation-to-nation comparison of country means on cultural values, thereby ignoring the cultural variation that exists within countries. We argue that these traditional mean-based measures of cultural distance should take within-country cultural variation into account. Therefore, we propose the use of variance-based measures of cultural distance. To illustrate our argument, we examine total US foreign affiliate sales in more than 40 host countries over the 1983–2008 period, complemented with data from the World Values Survey. We analyze the effects of three cultural distance measures: the Kogut and Singh (1988 Kogut, B., and Singh, H. (1988), ‘The Effect of National Culture on the Choice of Entry Mode,’ Journal of International Business Studies, 19, 411–432.[Crossref], [Web of Science ®] , [Google Scholar]) mean-based index of cultural distance, the Kogut and Singh (1988 Kogut, B., and Singh, H. (1988), ‘The Effect of National Culture on the Choice of Entry Mode,’ Journal of International Business Studies, 19, 411–432.[Crossref], [Web of Science ®] , [Google Scholar]) index conditioned by host-country cultural variation and a variance-based measure that takes into account both home- and host-country cultural variation. Our findings indicate that, when within-country cultural variation is taken into account, the explanatory power of the Kogut and Singh (1988 Kogut, B., and Singh, H. (1988), ‘The Effect of National Culture on the Choice of Entry Mode,’ Journal of International Business Studies, 19, 411–432.[Crossref], [Web of Science ®] , [Google Scholar]) index is substantially decreased. In addition, our variance-based measure of cultural distance outperforms the Kogut and Singh (1988 Kogut, B., and Singh, H. (1988), ‘The Effect of National Culture on the Choice of Entry Mode,’ Journal of International Business Studies, 19, 411–432.[Crossref], [Web of Science ®] , [Google Scholar]) measure in the explanation of foreign US sales. We therefore suggest to move from mean-based to variance-based measures of cultural distance, thereby taking the cultural variation within countries into account.     

中国农民合作社变异的经济逻辑

本文把农民合作社看作是人力资本与非人力资本签订的一系列契约的联结,进而分析了中国农民合作社变异的经济逻辑。决定合作社成败的企业家人力资本在合作社的契约集合中很少体现,具有能动性的人力资本所有者就会积极寻求合作社的控制权以谋求人力资本的回报,并按照对自己有利的方式运营合作社。     

基于改进TOPSIS法的上市传媒公司竞争力综合评价研究

传媒产业作为我国文化产业的重要组成部分,对我国经济发展和文化软实力的提升具有重要影响。随着中国传媒业发展环境的优化,传媒公司之间的竞争加剧。采用定性和定量相结合的方法对上市传媒公司的竞争力进行了研究。思路是首先构建上市传媒公司竞争力综合评价体系,然后采用改进的TOPSIS法对选取样本的竞争力进行综合评价和排序,最后提出增加上市传媒公司竞争力的对策建议。     

草舍油田区块原油沥青质初始沉淀压力研究

原油中的沥青质会随温度和压力变化发生沉淀,从而导致孔吼及油流通道堵塞,流动阻力增大,造成不可逆的储层伤害。为了在开发过程中预防沥青质严重沉积影响原油生产,采用近红外光散射技术和过滤法对沥青质初始沉淀压力进行研究。选取草舍油田区块典型井原油样品,采用近红外光散射技术测定油样在井口温度、井筒中部温度以及油藏温度下的沥青质初始沉淀压力,确定沥青质发生沉淀的热力学条件,并对热力学曲线拟合得到三项式回归方程;采用过滤法测定多组压力下的四组分含量,绘制胶质与沥青质比率曲线。结果表明：油样在实验温度为35、50、61、70、84℃时的沥青质沉淀初始压力分别为17.57、17.14、16.52、15.84、14.94 MPa,泡点压力分别为8.51、9.86、10.56、11.14、11.65 MPa;原油沥青质初始沉淀压力在井筒温度范围内呈线性反比例关系,且压力变化时胶质和沥青质呈相反的变化趋势。结合三项式回归方程和井筒温度压力曲线可预测开始出现沥青质沉淀的深度,对于地层防堵、井筒防沥青质沉淀具有参考意义。