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A one-year angler intercept survey was conducted on Choccolocco Creek, a rural, limited access tributary to the Coosa River in northeastern Alabama. The purpose of the survey was to collect data and information about the behaviors and fish consumption habits of the recreational anglers who fish there. Nine survey locations were included in the stratified sampling plan, and sampling occurred throughout daylight hours, on weekdays and weekends/holidays, during all four seasons of the year. Surveys were completed on a total of 101 survey days between June 28, 2008 and June 27, 2009.(6) Seventy-two anglers were observed fishing during the survey period, and 52 (72%) of those individuals agreed to participate in the survey. Based on the information collected by the survey clerks, the angler population fishes the Creek between 1 and 54 times per year, with an average frequency of seven trips per year. The average number of months fished was three months per year, with a range of one to nine months. Only 15% of the anglers who participated in the survey (eight individuals) had succeeded in catching fish by the end of their trips, and only four of those individuals (8%) had retained any of the fish they had caught for consumption. Reasons provided for not retaining fish were that they either only fished for sport, did not catch enough fish to eat, or the fish they caught were too small to keep. Because so few anglers used and harvested fish from the resource, fish consumption rates could not be determined with a high degree of confidence. However, from these limited data it was estimated that the three anglers for whom consumption rates could be estimated had annualized average daily fish consumption rates of 0.14, 0.44, and 7.9 grams per day (g/day). The majority of anglers traveled less than 10 miles to fish the Creek. It was estimated that a total population of 173 anglers use the Creek each year. The results of this survey indicated that Choccolocco Creek is a local fishery that is not heavily used by area residents.  相似文献   
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International business scholars increasingly emphasize regional strategies based on an optimal location of downstream sales. There has been less scholarly attention, however, to the relationship between international strategy and upstream knowledge creation including R&D. Building on contemporary strategic management theory and the knowledge‐based view we remedy this. The viability of home‐regional or bi‐regional strategies is based on common assumptions that imply negative consequences of distance and foreignness for downstream sales and marketing and benefits from agglomeration for upstream knowledge creation activities including R&D. In contrast, we propose that upstream knowledge creation, radical innovation in particular, rather gains from distance and foreignness and from being dispersed, suggesting the effectiveness of a global strategy. Based on the resource‐based view and recent research on the economics of strategic opportunities and competitive advantage, we provide theoretical explanations for this. We demonstrate how a global multinational corporation is uniquely equipped with knowledge extensity including heterogeneous social‐identity frames in multiple sub‐units. Thanks to arbitrage advantages between the sub‐units’ separate and often locally embedded knowledge, a global multinational corporation can address complex interdependences and interactions between knowledge sets required for knowledge creation. This suggests that maximum exploration capabilities are made possible by a global rather than a home‐regional or bi‐regional strategy.  相似文献   
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Tim Fischer  Udo Kamps 《Statistics》2013,47(1):142-158
There are several well-known mappings which transform the first r common order statistics in a sample of size n from a standard uniform distribution to a full vector of dimension r of order statistics in a sample of size r from a uniform distribution. Continuing the results reported in a previous paper by the authors, it is shown that transformations of these types do not lead to order statistics from an i.i.d. sample of random variables, in general, when being applied to order statistics from non-uniform distributions. By accepting the loss of one dimension, a structure-preserving transformation exists for power function distributions.  相似文献   
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In reliability theory, order statistics and record values are used for statistical modelling. The r-th order statistic in a sample of size n represents the life—length of a (n?r+l)-out-of-n system, and record values are used in shock models. In recent years, reliability properties of order statistics and record values have been investigated. The two models are included in Pfeifer's concept of record values from non-identically distributed random variables. Here, some results on the transmission of distributional properties, such as increasing failure rate, are shown for such records, which contain the results for order statistics and ordinary record values as particular cases.  相似文献   
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Temkin (1986, 1993) set out a philosophical basis for the analysis of income inequality that provides an important alternative to the mainstream welfarist approach. We show that the Temkin principles can be characterised by a parsimonious axiomatic structure and we use this structure to derive a new class of inequality indices and an inequality ordering. This class of indices has a family relationship to well-known measures of inequality, deprivation and poverty. The ordering is shown to have properties analogous to second-order dominance results.We would like to acknowledge financial support by the Training and Mobility of Researchers Programme of the European Communities, grant #ERBFMRXC T980248 (Living Standards, Inequality and Taxation), and to thank STICERD for hosting Ebert in order to facilitate our collaboration. Ralph Bayer helped greatly in preparation of the figures. We are grateful for comments from Yoram Amiel, Kurt Devooght and Alain Trannoy and from participants at workshops in Warwick, Bocconi, the LSE and Venice. We also wish to acknowledge the helpful comments of the referees of this journal.  相似文献   
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Using equivalent income of equivalent adults to rank income distributions   总被引:1,自引:0,他引:1  
The paper proposes the consistent and rigorous use of equivalence scales for households of different size. Equivalence scales are employed for deriving the income of an equivalent adult representing the household and for weighting the different household types. The proceeding takes into account the possibilities and the needs of different household types at the same time and seems to be adequate if income distributions are to be compared in terms of social welfare or inequality. The approach allows to define and to investigate the usual concepts (Lorenz curve, Lorenz dominance, social welfare function, progressive transfers etc.) for heterogeneous populations. They can be interpreted in an obvious way, and the results, well known for homogeneous populations, can be generalized. Furthermore, some unpleasant and unsatisfactory paradoxa or impossibility results, which can be found in the literature, vanish in the framework considered. Received: 7 March 1997/Accepted: 4 November 1997  相似文献   
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