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21.
This article measures technological progress in oceanic shipping directly by using a large database of daily log entries from British, Dutch, and Spanish ships to estimate daily sailing speed in different wind conditions from 1750 to 1850. Against the consensus among economic (but not maritime) historians that the technology of sailing ships was fairly static during this time, we find that average sailing speeds of British East India Company and Navy ships in moderate to strong winds rose considerably after the 1770s. Driving this progress was the introduction of coppering in the 1780s, but subsequent rises are probably due to a continuous evolution of sails and rigging, and improved hulls that allowed a greater area of sail to be set safely in a given wind. By contrast, the speeds of Dutch and Spanish vessels were stagnant. Using separate data on the crossing times of Atlantic mail packets, we find gradual progress from the 1750s, followed by marked improvements when American packets appeared in the 1820s. 相似文献
22.
ABSTRACTThis study examines whether foreign equity investment promotes domestic firms’ innovation activities. Using panel data on the Korean firms during the 1999–2013 period, we find that foreign ownership has a positive effect on firms’ innovation activities. Furthermore, we also show that, as compared to non-chaebol firms, chaebol firms’ innovation activity becomes much greater with the increase of foreign ownership. Finally, we investigate industry-level spillover effects of innovation. Specifically, we find that foreign ownership promotes innovation activities via forward linkage, the effect of which is also more pronounced in chaebol firms. 相似文献
23.
Michael A. Kelly 《The Financial Review》2006,41(4):589-597
We present a faster, more accurate technique for estimating implied volatility using the standard partial derivatives of the Black‐Scholes option‐pricing formula. Beside Newton‐Raphson and slower approximation methods, this technique is the first to provide an error tolerance, which is essential for practical application. All existing noniterative approximation methods do not provide error tolerances and have the potential for large errors. 相似文献
24.
On the basis of a uses‐and‐gratifications perspective, this exploratory study examined the TV viewing and VCR use of a sample of 119 households with VCRs. The instrument developed for use in this study consisted of a TV and VCR diary in which respondents recorded a variety of information related to each viewing (or recording) occasion for 1 week. The results suggest that although the ability to manipulate the broadcast schedule was a valued feature of the VCR, VCR use merely enhanced established patterns of TV viewing rather than significantly altered TV viewing or leisure behavior. The playback function of the VCR represented a primarily solitary activity pursued for entertainment and relaxation. Watching rented movies represented a primarily social activity pursued for entertainment, relaxation, and companionship. An equal number of television programs were viewed alone as were viewed with others. 相似文献
25.
Ryan M. Roberts Kelly W. Jones Andrew Seidl Audrey Ek Hannah Smith 《Journal of Sustainable Tourism》2017,25(10):1353-1366
Protected areas are key to the conservation of global biodiversity and ecosystem services; however, their success is contingent upon adequate funding. One possibility to increase funding for park management is to “sell” a wider suite of ecosystem services “produced” by protected areas, such as carbon sequestration. We conducted 420 tourist surveys to analyze willingness to pay (WTP) for ecosystem service benefits via a conservation fee in the Tambopata National Reserve in Peru. We also interviewed eight tour operators about their perceptions of the proposed fee. The average stated WTP was 15 USD. Sixty-six percent of tourists stated they would pay 10 USD or more, which, if actually paid, would have resulted in 318,000 USD for park management in 2015. Most respondents stated they would pay an additional fee if it supported biodiversity conservation or local ecosystem services, such as water, but less than 10% of tourists were motivated by carbon sequestration as a reason to pay the fee. Most tour operators supported the additional fee. Our findings suggest that tourists are willing to pay higher fees to support conservation but that interest in paying for additional ecosystem services from parks may not extend to global and intangible benefits such as carbon sequestration. 相似文献
26.
This paper reports on a study which explored the customer perspective on their roles in SST encounters in a tourism context, through the theoretical lens of service-dominant logic. The study employed short qualitative interviews with airline passengers at an international airport. The findings suggest that customers can assume six roles in an SST encounter which can be viewed as either positive or negative in terms of value creation. Therefore, a key contribution of this paper is the development of a role–experience continuum which depicts the variations in customer experiences of value creation in a tourism context. 相似文献
27.
It has been established that increasing the role of technology in a service organisation can serve to reduce costs and improve service reliability. It is argued, however, that there remains an important role for personalised relationships in the delivery of any service proposition. Throughout this paper both of these perspectives will be discussed and an attempt is made to reconcile these apparently opposing views in the emerging age of technology-enabled remote relationships. Findings from a longitudinal research study with a large UK case bank that focused on the area of remote relationships are revisited and reinterpreted with management from the case bank in question. Through this reflective lens the bank's recent strategic decision to no longer proactively relationship manage its personal customer base is examined. In light of this deliberate relationship disconnection strategy key marketing implications are discussed. 相似文献
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29.
Joe Steinhardt 《Journal of Risk Research》2020,23(5):613-625
AbstractNumbers saturate news coverage and health and risk messaging. But as our expertise in the creation of statistical information increases, the ability to use those statistics in decision making remains frustratingly inadequate. There has been a wealth of research related to how to train people to better use the numbers they interact with on a daily basis. Far less research, however, explores the appropriate way to use numbers in communication. Two experiments explored the role of numbers in risk communication infographics related to road safety while driving. Experiment 1 found that the presence of numbers influence risk perception, but whether those numbers reflect accurate statistics or random numbers does not change their influence. Experiment 2 found that removing all statistics entirely from infographics and replacing them with linguistic gist representations of the numbers (i.e. words like ‘some’, ‘many’, ‘none’) increased risk perception even though people found the infographics to be less informative than the ones containing numbers. The results suggest that the gist representations of the numbers in the context of the infographics are equivalent regardless of their value, such that the very presence of statistics influences judgment and risk perception but not their meaning. They also suggest that people do not always realize how they are using statistical information in their judgement and decision making process. 相似文献
30.