منابع مشابه
Biomedical methods for HIV prevention: new setbacks.
In terms of prevention, I will focus on 4 main issues. First, there is the problem of identifying those recently infected with HIV. Annual HIV transmission rates in the United States are 3.5-fold higher among persons with undiagnosed infection as among those who know they are infected.1 Groups classically identified as low risk for HIV infection, such as married heterosexual men with children, ...
متن کاملSetbacks in Alzheimer research demand new strategies, not surrender
In this month's editorial, the PLOS Medicine Editors discuss the challenges of addressing a growing population with Alzheimer disease and dementia amidst disappointing news from the pharmaceutical industry.
متن کاملNew Media, Firms, Ideas, and Growth: European Cities After Gutenberg
Gutenberg's printing press was the great revolution in Renaissance information technology. This paper presents new evidence on media markets, knowledge transmission, and city growth across Europe 1450-1600. The paper constructs comprehensive rm-level panel data on the number and subjects of book titles printed each year by the 7,000+ printing rms operating in over 300 European cities 1450-1600....
متن کاملThermodynamics of firms' growth
The distribution of firms' growth and firms' sizes is a topic under intense scrutiny. In this paper, we show that a thermodynamic model based on the maximum entropy principle, with dynamical prior information, can be constructed that adequately describes the dynamics and distribution of firms' growth. Our theoretical framework is tested against a comprehensive database of Spanish firms, which c...
متن کاملHuman Capital in New Firms
Acknowledgements When I began studying economics, I did not believe that I would ever be able to write a dissertation in this discipline. Too many mathematical formulas seemed to ask too much from my brain that intrinsically likes pictures and verbal stories. It needed several persons who continuously encouraged me to reach the point where I stand now. The first who believed in me was Oliver Fa...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Futures
سال: 2005
ISSN: 0016-3287
DOI: 10.1016/j.futures.2004.11.011