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There exist few quantitative assessments of the relationship between biodiversity per se and economic benefits at scales that are relevant for conservation. Similarly, the merits of Community-Based Natural Resource Management programs for both wildlife and people are contested. Here, we harness two databases, on wildlife surveys and financial benefits, to address these issues for communal conservancies in northwest Namibia. We use ordination methods to characterize the diversity and stability of large wildlife assemblages on conservancies, and demonstrate that diversity (but not stability) is an important explanator of conservancy financial benefits. Our results indicate that for this area of Namibia, biodiversity, as represented by large wildlife assemblages, has an important, positive effect on the tangible financial benefits that people derive from conservation programs.  相似文献   
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Accurate estimation of the equity premium (the expected difference between the returns to a well-diversified stock market portfolio and a riskfree asset) is of central importance in many applications of finance theory including project appraisal and portfolio selection. The standard approach is to take the average observed excess returns to the market over some recent time period (sometimes referred to as the ex post equity premium) and apply this as an unbiased estimate of the ex ante equity premium. The paper reviews the problems associated with such an approach and contrasts it with alternative theoretical techniques.  相似文献   
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Whether firms pursue shareholder value maximization or the maximization of stakeholder welfare is a controversial issue whose outcomes seem irreconcilable. We propose that firms are likely to compensate their executives for pursuing the firm's goal be it shareholder value maximization or the maximization of stakeholder welfare. In this paper, we examine the correlation between firm value, stakeholder management, and compensation. We find that stakeholder management is positively related to firm value. However, firms do not compensate managers for having good relationships with its stakeholders. These results do not support stakeholder theory. We also find an endogenous association between compensation and firm value. Our results are consistent with Jensen's (2001) enlightened value maximization theory. Managers are compensated for achieving the firm's ultimate goal, value maximization. However, managers optimize interaction with stakeholders to accomplish this objective.  相似文献   
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A survey of farmers in Southern Alberta was developed to determine the importance of computer decision-making tools in the region. The survey provided approximately 300 useable responses. The results indicated that 78% of Southern Alberta farmers owned computers and 50% owned Pentium or Pentium II computers. The largest farm related uses for these computers were: 1) maintaining general farm account records, 2) tax preparation, 3) word processing, and 4) maintaining inventory records. Sixtyfour percent of respondents use computers for record-keeping and 58% use them for accounting. About 40% of respondents use the Internet to obtain price and weather information. Only 15% have ever used decision-making models .  相似文献   
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A major contention in this paper is that scientific models can be viewed as virtual realities, implemented, or rendered, by mathematical equations or by computer simulations. Their purpose is to help us understand the external reality that they model. In economics, particularly in econometrics, models make use of random elements, so as to provide quantitatively for phenomena that we cannot or do not wish to model explicitly. By varying the realizations of the random elements in a simulation, it is possible to study counterfactual outcomes, which are necessary for any discussion of causality. The bootstrap is virtual reality within an outer reality. The principle of the bootstrap is that, if its virtual reality mimics as closely as possible the reality that contains it, it can be used to study aspects of that outer reality. The idea of bootstrap iteration is explored, and a discrete model discussed that allows investigators to perform iteration to any desired level.  相似文献   
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This study assesses whether or not the preparers of chairman addresses of large listed Australian firms manage user perceptions through the syntactical complexity of the provided information and/or the rationalisation of unwanted information. It applies an innovative assessment approach for the rationalisation of unwanted information. The study analyses the chairman addresses of 87 firms included in the Standard & Poor's ASX200 index using the Flesch readability formula, as well as the relative occurrence frequency of sentences with particular connotations within each analysed report. The findings of this study demonstrate that although the comprehension difficulty of chairman addresses is generally high, preparers do not attempt to manage user perceptions through syntactical complexity or rationalisation. Specifically, the study finds no evidence that chairman addresses that contain predominantly negative news are more difficult to comprehend than chairman addresses that contain predominantly positive news. Furthermore, it is concluded that preparers do not use rationalisations to manage user perceptions. Prior literature has thus far failed to investigate the rationalisation of information as a potential perception management tool and no other recent contribution to the literature has investigated the syntactical complexity of Australian chairman addresses that contain predominantly positive or negative news. This study aims to fill that gap.  相似文献   
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