A model of interdependent welfare functions is developed. The relationship between the parameters of an individual's welfare function and the income distribution in his Social Reference Space is established. Results based on Dutch data are presented. 相似文献
The paper reviews the development of von Neumann and Morgenstern (vNM) utility theory. Kahneman and Tversky’s (KT’s) prospect theory is introduced. The vNM utility function is compared and contrasted with KT’s value function. We prove the uniqueness of two popular utility functions. First, we show that all power utility functions possess constant RRA. And, we show that all exponential utility functions have constant ARA. The paper concludes by discussing applications, strengths and weaknesses of various utility functions. 相似文献
A simulation study was carried out to study the behaviour of the polychoric correlation coefficient in data not compliant with the assumption of underlying continuous variables. Such data can produce relatively high estimated polychoric correlations (in the order of .62). Applied researchers are prone to accept these artefacts as input for elaborate modelling (e.g., structural equation models) and inferences about reality justified by sheer magnitude of the correlations. In order to prevent this questionable research practice, it is recommended that in applications of the polychoric correlation coefficient, data is tested with goodness-of-fit of the BND, that such statistic is reported in published applications, and that the polychoric correlation is not applied when the test is significant. 相似文献
Climate change may pose considerable challenges to coastal cities, particularly in low-lying urban deltas. Impacts are, however, associated with substantial uncertainties. This paper studies an uncertainty-robust adaptation strategy: strengthening the resilience of the impacted system. This approach is operationalised for the city of Rotterdam, using literature study, interviews, and a workshop. Potential impacts have been explored using national climate statistics and scenarios and a set of ‘wildcards’ (imaginable surprises). Sea level rise, particularly in combination with storm surge, and enduring heat and drought are the most relevant potential stresses in the area. These can lead to damage, loss of image, and societal disruption. Unclear responsibilities enhance disruption. ‘Resilience principles’ made the concept of resilience sufficiently operational for local actors to explore policy options. Useful principles for urban resilience include: homeostasis, omnivory, high flux, flatness, buffering, redundancy, foresight and preparedness/planning, compartmentalisation, and flexible planning/design. A resilience approach makes the system less prone to disturbances, enables quick and flexible responses, and is better capable of dealing with surprises than traditional predictive approaches. Local actors frame resilience as a flexible approach to adaptation that would be more suitable and tailored to local situations than rigid top-down regulations. In addition to a change in policy, it would require a more pro-active mentality among the population. 相似文献
Research Summary: This article studies how the logic of firm governance choices varies as a function of the time of adoption of particular sourcing practices. Using data on the diffusion of global business services sourcing as a management practice from early experiments in the 1980s through 2011, we show that the extent to which governance choices are affected by process commoditization, availability of external service capabilities, and past governance choices depends on whether firms are early or late adopters. Findings inform research on governance choice dynamics specifically in highly diverse and evolving firm populations. Managerial Summary: This article considers how firms have chosen delivery models in global services sourcing decisions over time. Based on comprehensive data, we make two major observations. First, we find that firms that began with global services sourcing early, invested mainly in their internal sourcing capacity, while outsourcing only simple tasks to external providers, whereas firms that started later invested more in their capability to outsource various services to increasingly sophisticated suppliers. Second, we find that initial investments in internal or external sourcing capabilities have a strong effect on future choices of delivery models. This explains why, even today, firms vary greatly in how they implement global sourcing decisions, and it suggests that newcomers should learn from their own peer group rather than from highly experienced firms. 相似文献
Managing the Indonesian economy in 2015 has proved challenging for the administration of Joko Widodo (Jokowi). In a first quarter plagued by external adversity—especially a sharp drop in exports to China—coupled with internal political paralysis and the delayed disbursement of fiscal spending, the economy recorded its lowest rate of growth since 2009. Observing relatively stable inflation, Bank Indonesia (BI), the central bank, eased its policy rate in February by 25 basis points, to 7.5%. The bank also adjusted its macroprudential measures to counter declining bank lending. On the fiscal side, the expected stimulus from fuel-subsidy reallocation and aggressive public-capital spending did not arrive. Meanwhile, tax revenue made slow progress towards its ambitious target, which it seems unlikely to attain.
Increases in supply costs made it difficult for the government to align domestic fuel prices more closely to the market. Major commodity exports fell significantly, but some manufactured exports showed hints of an upturn. The depreciation of the rupiah, the global strategies of leading investors, and the introduction of taxexemption policies that have been tested in neighbouring countries may have contributed to this trend. To further broaden the base of export diversification, the priorities should be to reduce business costs and enhance competition rather than enforce mandatory regulations. Jokowi has stressed that his focus on maritime development, part of a broader development strategy, includes reducing logistics costs.
The second quarter of 2015 saw the start of several projects in Jokowi's flagship ‘sea toll’ program to improve maritime connectivity. There is a concern, however, that the predominance of state-owned enterprises (SOEs) in strategic port operations will continue to limit competition and reduce efficiency. Jokowi's development strategy also focuses on reducing inequality. His government has implemented several distribution and redistribution policies, including the national social-security system initiated by the previous administration. The system suffered financially in its first year from low participation among those in the informal sector. 相似文献
Pizam, Abraham, Yoram Neumann, and Arie Reichel.. “Dimensions of Tourist Satisfaction with a Destination Area,” Annals of Tourism Research, Vol. V, No. 3, July/September 1978, pp. 314–322. This paper empirically identifies eight factors of tourist satisfaction with Cape Cod, Massachusetts (USA) as a tourist destination area; and it suggests the means to measure them. By using a factor-analytic approach based on data obtained from a survey of 685 vacationing tourist, the following factors of tourist satisfaction were derived: beach oppurtunities, cost, hospitality, eating and drinking facilities, accommodation facilities, environment, and extent of commercialization. 相似文献