منابع مشابه
Valuing Nature
Nature conservation work has come a long way in just over a century. In the 19th century, species were grouped into useful and harmful ones. Protection, which was beginning to be enshrined in laws and international treaties, was only extended to the useful species. Nuisances such as lions and bears were unflinchingly earmarked for destruction. Since the foundation of the International Union for...
متن کاملValuing vaccination.
Vaccination has led to remarkable health gains over the last century. However, large coverage gaps remain, which will require significant financial resources and political will to address. In recent years, a compelling line of inquiry has established the economic benefits of health, at both the individual and aggregate levels. Most existing economic evaluations of particular health intervention...
متن کاملValuing Preservation
Preservation has value to society over and above the value of the content that is preserved. It is important to articulate this value in order to argue compellingly for the creation of public policies and economic models that adequately support preservation of culturally significant content. This article explores the societal value of preservation, discussing why questions about societal value ...
متن کاملValuing Credit Derivatives
Credit derivatives are potentially one of the most important new types of financial products introduced during the past decade. Many investors have portfolios with values that ar higWy sensitive to shifts in the spread between risky and riskless yields, and credit derivatives offer these investors an important new tool for managing and hedging their exposure to this type of risk. In this articl...
متن کاملValuing Great Lakes Beaches
This study aims to estimate the recreational use values of Great Lakes beaches using a two-level nested logit Random Utility Model. The choice set contains all 594 public Great Lakes beaches in Michigan. Beach sites located in the same Great Lakes water body are arranged into a nest. The trip data were obtained from a 2006 online survey using a web-panel of Michigan adults accessed through Surv...
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ژورنال
عنوان ژورنال: Science
سال: 2014
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.aaa4115