排序方式: 共有18条查询结果,搜索用时 15 毫秒
1.
Testing one population variance and the difference in variances of two populations based on the ordinary t-statistics combined with the bootstrap method are suggested in this article. Suggested techniques are combined with Hall's transformation approach. Application of presented methods in domain of real economic data set is described and analyzed. We compare the outputs of suggested methods and traditional methods for considered data set. The results show that these introduced methods have small advantages in comparisons with traditional methods especially for small samples. 相似文献
2.
Tatjana Thimm 《Journal of Travel & Tourism Marketing》2013,30(5):576-588
This study builds on the concepts developed by Florida in his work “The Rise of the Creative Class”. In doing so it seeks evidence for the claims made that the creative arts address deficiencies identified in the terminology of ‘cultural tourism’. The case relates to flamenco performances in Seville. The art complex of flamenco survived on the one hand as a symbol of Andalusian culture on the other hand it depends strongly on the international tourism market. Additionally flamenco is used in destination marketing to differentiate Seville from other Spanish cities. 相似文献
3.
‘If I was King of India I would Get All the Horns Out of Cars’: A Qualitative Study of Sound in Delhi 下载免费PDF全文
Maria Patsarika Tatjana Schneider Michael Edwards 《International journal of urban and regional research》2018,42(1):74-89
In this article we present an experimental sonic space—the mobile noise abatement pod (mNAP)—constructed and used over a two‐week period in Delhi, India, during December 2014. The interdisciplinary project, involving a composer, designer, carpenter, development scholar, filmmaker, graphic designer and sociologist, sought to investigate how noise, including honking (one of the most prevalent sounds in Indian cities), is perceived. The fieldwork reveals noise to be a complex contextual, spatial and personal experience that is as much about habit as it is about identity and class, intimately related to economic inequality and inherently connected to social justice. The article suggests that attempts to reduce levels of noise need to take into account its meaning and position—by whom and how narratives of noise reduction are constructed and reproduced. 相似文献
4.
We model and solve best choice problems in the multiple prior framework: An ambiguity averse decision maker aims to choose the best among a fixed number of applicants that appear sequentially in a random order. The agent faces ambiguity about the probability that a candidate—a relatively top applicant—is actually best among all applicants. We show that our model covers the classical secretary problem, but also other interesting classes of problems. We provide a closed form solution of the problem for time-consistent priors using backward induction. As in the classical case, the derived stopping strategy is simple. Ambiguity can lead to substantial differences to the classical threshold rule. 相似文献
5.
Raimond Maurer Olivia S. Mitchell Ralph Rogalla Tatjana Schimetschek 《The Journal of risk and insurance》2021,88(1):5-27
Many Americans claim Social Security benefits early, though this leaves them with lower monthly payments throughout retirement. We build a lifecycle model that closely tracks claiming patterns under current rules, and we use it to predict claiming delays if, by delaying benefits, people were to receive a lump sum instead of an annuity. We predict that current early claimers would defer claiming by a year given actuarially fair lump sums, and the predictions conform with respondents' answers to a strategic survey about the lump sum. In other words, such a reform could provide an avenue for encouraging delayed retirement without benefit cuts or tax increases. Moreover, many people would still defer claiming even for smaller lump sums. 相似文献
6.
Stephanie Chen Stavros Tourkodimitris Tatjana Lukic 《Journal of medical economics》2014,17(10):685-690
Objective:To estimate the real-world economic impact of switching hypertensive patients from metoprolol, a commonly prescribed, generic, non-vasodilatory β1-blocker, to nebivolol, a branded-protected vasodilatory β1-blocker.Methods:Retrospective analysis with a pre–post study design was conducted using the MarketScan database (2007–2011). Hypertensive patients continuously treated with metoprolol for ≥6 months (pre-period) and then switched to nebivolol for ≥6 months (post-period) were identified. The index date for switching was defined as the first nebivolol dispensing date. Data were collected for the two 6-month periods pre- and post-switching. Monthly healthcare resource utilization and healthcare costs pre- and post-switching were calculated and compared using Wilcoxon test and paired t-test. Medical costs at different years were inflated to the 2011 dollar.Results:In total, 2259 patients (mean age: 60 years; male: 52%; cardiovascular [CV] disease: 37%) met the selection criteria. Switching to nebivolol was associated with statistically significant reductions in the number of all-cause hospitalization (?33%; p?0.01), CV-related hospitalizations (?60%; p?0.01), and outpatient visits (?7%; p?0.01). Monthly inpatient costs were reduced by $111 (p?0.01), while monthly drug costs increased by $52 (p?0.01). No statistically significant differences were found in overall costs and costs of outpatient or ER visits. Sensitivity analyses, conducted using various lengths of medication exposure, controlling for spill-over effect or excluding patients with compelling indications for metoprolol, all found some level of reduction in resource utilization and no significant difference in overall healthcare costs.Conclusions:This real-world study suggests that switching from metoprolol to nebivolol is associated with an increase in medication costs and significant reductions in hospitalizations and outpatient visits upon switching, resulting in an overall neutral effect on healthcare costs. These results may be interpreted with caution due to lack of a comparator group and confounding control caused by design and limitations inherent in insurance claims data. 相似文献
7.
Tatjana Josipović 《Journal of Consumer Policy》2013,36(3):287-314
The law regulating consumer protection in the Republic of Croatia began its intensive development through the process of harmonization of Croatian legislation with EU law. Apart from the approximation of Croatian legislation with the acquis, in the pre-accession process, Croatia also undertook obligations to introduce and develop corresponding mechanisms for the efficient enforcement of consumer protection in practice. The development of consumer protection policy was recognized as a priority area in Croatia, and even before full membership, the process of implementing new directives in the area of consumer protection ran almost in parallel to and at the same pace as that of the Member States. Alongside the harmonization of its legislation with the EU consumer acquis, Croatia started developing a regulatory enforcement structure, including a whole series of mechanisms to achieve individual and collective protection of consumer rights. Among other things, the satisfactory development of regulatory enforcement activities in consumer protection was one of the preconditions for the successful completion of the accession negotiations and for signing the accession treaty. At the same time, the article suggests that in the area of both the individual and collective realization of consumer protection, there is a need for further progress through, on the one hand, developing administrative capacities and enhancing access to justice, as well as developing a system of out-of-court settlement of consumer disputes on the other. 相似文献
8.
Tatjana Slavova 《Empirica》2008,35(4):339-367
In this paper, methods of multi-criteria efficiency evaluation are implemented for ranking the socio-economic systems of the EU regions. The socio-economic rank order problem is a multi-criteria non-convex optimization problem that was solved by the implementation of a new efficiency evaluation, AOWI (Absolute Optimal Weights Index). The rank order of the 268 NUTS-2 regions from the 27 European Union countries in the social framework obtained on the basis of 16 socio-economical indicators illustrates social divergence within the European Union and in the new European Union regions. 相似文献
9.
ABSTRACTComposite models have a long history in actuarial science because they provide a flexible method of curve-fitting for heavy-tailed insurance losses. The ongoing research in this area continuously suggests methodological improvements for existing composite models and considers new composite models. A number of different composite models have been previously proposed in the literature to fit the popular data set related to Danish fire losses. This paper provides the most comprehensive analysis of composite loss models on the Danish fire losses data set to date by evaluating 256 composite models derived from 16 parametric distributions that are commonly used in actuarial science. If not suitably addressed, inevitable computational challenges are encountered when estimating these composite models that may lead to sub-optimal solutions. General implementation strategies are developed for parameter estimation in order to arrive at an automatic way to reach a viable solution, regardless of the specific head and/or tail distributions specified. The results lead to an identification of new well-fitting composite models and provide valuable insights into the selection of certain composite models for which the tail-evaluation measures can be useful in making risk management decisions. 相似文献
10.