8期

最新文章

• A structure-exploiting tool in algebraic modeling languages AI翻译
  作者：Fragnière, E; Gondzio, J; Sarkissian, R; Vial, JP
  作者单位：University of Lausanne; Polish Academy of Sciences; Systems Research Institute of the Polish Academy of Sciences; University of Geneva
  摘要：A new concept is proposed for linking algebraic modeling languages with structure-exploiting solvers. SPI (Structure-Passing Interface) is a program that retrieves structure new concept is proposed for linking algebraic modeling languages with structure from an anonymous mathematical program built by an algebraic modeling language. SPI passes the special structure of the problem to an SES (Structure-Exploiting Solver). An integration of SPI and SES leads to SET (Structure-Exploiting Tool) and ...
• Methadone maintenance and HIV prevention: A cost-effectiveness analysis AI翻译
  作者：Zaric, GS; Brandeau, ML; Barnett, PG
  作者单位：Western University (University of Western Ontario); Stanford University; Stanford University
  摘要：We assess the cost-effectiveness of maintenance treatment for heroin addiction, with emphasis on its role in preventing HIV infection. The analysis is based on a dynamic compartmental model of the HIV epidemic among a population of adults, ages 18 to 44. The population is divided into nine compartments according to infection status and risk group. The model takes into account disease transmission from drug injection and sexual contacts. The health benefits of methadone maintenance and the resu...
• Do corporate global environmental standards create or destroy market value? AI翻译
  作者：Dowell, G; Hart, S; Yeung, B
  作者单位：University of Notre Dame; University of North Carolina; University of North Carolina Chapel Hill; New York University; University of Michigan System; University of Michigan
  摘要：Arguments can be made on both sides of the question of whether a stringent global corporate environmental standard represents a competitive asset or Liability for multinational enterprises (MNEs) investing in emerging and developing markets. Analyzing the global environmental standards of a sample of U.S.-based MNEs in relation to their stock market performance, we find that firms adopting a single stringent global environmental standard have much higher market values, as measured by Tobin's q...