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51.
Roger Schofield 《The Economic history review》2016,69(2):600-626
In an earlier study of the plague in Colyton, Devon, the household distribution of deaths was studied to see whether this provided a method of identifying the causative disease. In this article, a known epidemic of plague in the Swedish parish of Bräkne‐Hoby was studied as a means of testing out the generality of the household distribution of deaths. It was discovered that, in this case, the very heavy mortality was due to two radically different means of spreading the disease, initially the classic bubonic one through the rat flea, and latterly, and somewhat surprisingly, the pneumonic one, through the infection of the inhabitants by their own friends and neighbours. 相似文献
52.
Olivier Brandouy Angelo Corelli Iryna Veryzhenko Roger Waldeck 《Journal of Economic Interaction and Coordination》2012,7(2):223-248
In recent years, a growing literature has claimed that the market microstructure is sufficient to generate the so-called stylized facts without any reference to the behaviour of market players. Indeed, qualitative stylized-facts can be generated with zero-intelligence traders (ZITs) but we stress that they are without any quantitative predictive power. In this paper we show that in most of the cases, such qualitative stylized facts hide unrealistic price motions at the intraday level and ill-calibrated return processes as well. To generate realistic price motions and return series with adequate quantitative values is out-of-reach using pure ZIT populations. To do so, one must increasingly constrain agents?? choices to a point where it is hard to claim that their behaviour is completely random. In addition we show that even with highly constrained ZIT agents, one cannot reproduce real time series from these. Except in a few cases, first order moments of ZITs never equal real data ones. We therefore claim that stylized facts produced by means of ZIT agents are useless for financial engineering. 相似文献
53.
Roger Cavazos 《中国对外贸易(英文版)》2012,(7):92-92
Most every Chinese person I have met has tried to teach me something.So many wonderful teachers,such a poor student.Yet,they continue to share their culture and for that I am extremely grateful.Think ing about it a 相似文献
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55.
Roger Bennett 《非赢利和公共部门市场学杂志》2017,29(1):39-63
Many fundraising charities invest heavily in content marketing, often using consultants to direct their content-marketing efforts. Thus it is vital to establish whether certain key aims of content marketing suggested by literature in the field actually match the aspects of content marketing deemed most important by charity donors. This paper examines the significance attached by samples of charities, donors, and content-marketing consultancies to four possible major objectives of content marketing—the attainment of high–search-engine-results-page rankings, image enhancement through impression management, the stimulation of public perceptions of organizational transparency, and the creation of messages that “go viral.” Several major differences in perceptions emerged among the three groups, with substantial implications for how fundraising charities should manage their content-marketing programs and activities. Charity managements need to consider carefully and critically the possible returns on large-scale expenditures intended to pursue the putative aims of content marketing that are routinely advocated by practitioner and academic literature. 相似文献
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Tracy Gonzalez-Padron Author Vitae G. Tomas M. Hult Author Vitae Roger Calantone Author Vitae 《Industrial Marketing Management》2008,37(1):69-82
Purchasing managers are expected to balance costs, innovation, supplier management, and corporate social responsibility while coordinating expanding areas of the corporation. The increased responsibilities and pressures to innovate brings purchasing managers into potentially increasingly difficult ethical dilemmas. In this study, we examine the relationships between organizational culture, learning, entrepreneurial innovation, and purchasing outcomes in different ethical climates. To address external business conditions that may influence innovation in purchasing, we also examine the moderating effects of technological and market turbulence. Data from 200 purchasing managers in multinational corporations were used to test the relationships through structural equation modeling. We find that entrepreneurial innovation positively affects the quality of the relationships among sourcing participants when operating in a climate valuing ethics. The study results are particularly relevant for managers concerned that establishing an ethical climate may restrict innovation in the purchasing process. 相似文献
58.
The use of valuation models that focus on lender criteria has been growing in the appraisal field. In the rush to build lender criteria into real estate valuation models, equity investor criteria, expectations, and requirements occasionally have been ignored. The specific criteria considered in this paper are the loan-to-value ratio and the debt coverage ratio for lenders and the equity dividend rate for equity investors. Each of these three criteria may be a binding constraint on value.
Graphical analysis provides a framework within which major real estate valuation models (i.e., Ellwood, McLaughlin, Gettel, Lusht-Zerbst, and Steele) are compared. A new valuation model (i.e., the Cannaday-Colwell model) is developed which utilizes the equity dividend rate.
The three definitional models (i.e., McLaughlin, Gettel, and Steele) are found to be relevant only by mere coincidence. Each of these models simultaneously considers two of the three key criteria, completely eliminating the possibility of consideration of anything else; i.e., the models become tautological.
It is shown that the discounted cash flow based models (i.e., Ellwood, Lusht-Zerbst, and Cannaday-Colwell) each tell one-third of the story. One of these models will be relevant depending upon whether the binding constraint is the maximum loan-to-value ratio, the minimum debt coverage ratio, or the minimum equity dividend rate. The relevant model is the one that yields the lowest value estimate of the three. 相似文献
Graphical analysis provides a framework within which major real estate valuation models (i.e., Ellwood, McLaughlin, Gettel, Lusht-Zerbst, and Steele) are compared. A new valuation model (i.e., the Cannaday-Colwell model) is developed which utilizes the equity dividend rate.
The three definitional models (i.e., McLaughlin, Gettel, and Steele) are found to be relevant only by mere coincidence. Each of these models simultaneously considers two of the three key criteria, completely eliminating the possibility of consideration of anything else; i.e., the models become tautological.
It is shown that the discounted cash flow based models (i.e., Ellwood, Lusht-Zerbst, and Cannaday-Colwell) each tell one-third of the story. One of these models will be relevant depending upon whether the binding constraint is the maximum loan-to-value ratio, the minimum debt coverage ratio, or the minimum equity dividend rate. The relevant model is the one that yields the lowest value estimate of the three. 相似文献
59.
60.
Nukhet Harmancioglu Regina C. McNally Roger J. Calantone Serdar S. Durmusoglu 《R&D Management》2007,37(5):399-424
Given industry competitiveness, how do firms' new product development (NPD) process designs differ when responding to an innovation mandate? How do NPD design elements differ across firms when implementing NPD processes? These design elements are strategic business unit (SBU) senior management involvement, business case content, customer interactions, and cross‐functional integration. What are the consequences of different combinations of NPD process design elements for innovation productivity? We explore these questions via a collective case study of newly implemented NPD process designs at three different SBUs of a major US‐based international conglomerate, 1 year after receiving the mandate to grow through innovation. Our analysis suggests that industry competitiveness and firm characteristics influence the NPD process design as SBUs employ distinct combinations of NPD design elements. The differential emphasis on design elements leads to variation in process design and divergence in innovation productivity. 相似文献