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1.
Automated content analysis of online travel reviews allows identification of topics of travelers' satisfaction, yet its domain is not well researched. We suggest that the Anna Karenina principle positing a greater variability of the factors leading to business failure as opposed to those leading to success can be applied to the domain of visitors’ reviews of historic and cultural attractions. The larger variability of issues in reviews of dissatisfied visitors is likely to result in limitations for automated topic modeling. We confirm our proposition using TripAdvisor reviews of the Terracotta Army museum in China, and validate the outcome with two additional sites. The study strongly suggests that application of unsupervised topic mining algorithms to negative reviews may be problematic and the results should be treated with caution. The main themes of dissatisfaction of visitors to all three sites are reported and practical implications for management of the attractions are discussed. 相似文献
2.
A play-the-winner-type urn design with reduced variability 总被引:1,自引:0,他引:1
Anastasia Ivanova 《Metrika》2003,58(1):1-13
We propose a new adaptive allocation rule, the drop-the-loser, that randomizes subjects in the course of a trial comparing
treatments with dichotomous outcomes. The rule tends to assign more patients to better treatments with the same limiting proportion
as the randomized play-the-winner rule. The new design has significantly less variable allocation proportion than the randomized
play-the-winner rule. Decrease in variability translates into a gain in statistical power. For some values of success probabilities
the drop-the-loser rule has a double advantage over conventional equal allocation in that it has better power and assigns
more subjects to the better treatment.
Acknowledgments. I thank Stephen Durham, the associate editor, and the referees for their helpful suggestions. 相似文献
3.
通过对公共服务的属性分析,结合新政治经济学理论和政府失败的现实因素,探索公益物品的有效供给模式,提出了公共服务的签约转包机制,并分析了这一机制的不足和政府的作用。 相似文献
4.
赵复强 《广西经济管理干部学院学报》2005,17(1):34-36
区域不平衡发展是一个普遍的规律,欠发达地区应根据不平衡发展理论,吸取经验教训,建立科学的不平衡发展促动机制。 相似文献
5.
For reasons of political feasibility, emission trading systems may have to rely on free initial allocation of emission allowances in order to ameliorate adverse production and employment effects in dirty industries. Against the background of an emerging European‐wide emission trading system, we examine the trade‐off between such compensation and economic efficiency under output‐based and emissions‐based allocation rules. We show that the emissions‐based allocation rule is more costly than the output‐based rule in terms of maintaining output and employment in energy‐intensive industries. When the international allowance price increases, the inferiority of emissions‐based allocation vis‐à‐vis output‐based allocation becomes more pronounced, as emission subsidies drastically restrict efficiency gains from international trade in emission allowances. 相似文献
6.
李勇 《石油工业技术监督》2008,24(2):10-14,38
以西方经济学中的代理理论为基础.建立了一套以风险协议为框架、对化工措施全过程进行控制的管理机制和相应的保证体系,提高了化工措施现场实施的成功率和有效率。 相似文献
7.
王军 《内蒙古财经学院学报(综合版)》2008,(6):15-18
在对高校教师激励机制现状分析之后,针对高校教师的职业特点,提出了高校教师激励机制模式:薪酬激励、社会保障计划、参与激励、竞争激励、组织文化激励、工作激励。 相似文献
8.
Analysis on the internal mechanism forming the capital operation venture of nation-owned enterprises
REN Xiu-mei WANG Guo-zeng 《美中经济评论(英文版)》2008,7(1):57-59
According to the Capital of Karl Marx, capital aims at realizing the value maintenance and increment during the process of its cycle and turnover. Without the conditions of capital's cycle and turnover, it will break off. This will furthermore bring an obstacle to the value maintenance and increment of capital, which is the root of capital operation venture and is also the internal mechanism forming the capital operation venture of nation-owned enterprises. 相似文献
9.
G. H. BURROWS 《Abacus》1994,30(1):50-64
The extent to which allocated common costs should influence business decisions remains controversial in management accounting. In the finance and investment literature this issue is generally ignored or dismissed by appeals to the'incremental' principle. This article presents an historical analysis of allocations in long-run investing and pricing decisions. It is demonstrated that seminal figures in the development of both investment and price theory were conscious of the need for firms to cover common costs and generally favoured some form of allocation. The anti-allocationist position is shown to be of relatively recent origin and to have caused an inconsistency in the management accounting literature in the treatment of common costs. European costing theory is shown to have been consistently allocationist. Evidence of a return in the recent U.S. literature to the older Anglo-American, and continuing European, allocations tradition is presented. 相似文献
10.
新形势下我国耕地保护的长效机制研究 总被引:1,自引:0,他引:1
耕地是人类赖以生存的物质基础,是国民经济和社会发展的宝贵资源,耕地数量的多少和质量优劣直接关系到国家粮食安全和社会稳定。因此,在新形势下,如何保护好有限的耕地资源,促进经济社会科学、合理地发展,已成为当今世界的重大课题。本文根据我国耕地减少的现实危机及原因,提出一套科学、合理的耕地保护长效机制,力求为进一步有效地保护耕地资源提供理论基础和现实途径。 相似文献