A large literature base on telemedicine exists, but the evidence base for telemedicine is very limited. There is little practical or useful information to guide clinicians and health policymakers. Telemedicine is often implemented based on limited or no prior formal analysis of its appropriateness to the circumstances, and adoption of telemedicine by clinicians has been slow and patchy. Formal ...

System defects and policy-related exclusion in the development and utilization of energy resources bring the problem of rich poverty to energy and chemical industry base in Northern Shaanxi. The long existence of the rich poverty problem of energy and chemical industry base in Northern Shaanxi forms deep-seated constraints to the sustainable development of energy economy in Northern Shaanxi and...

Mobile broadband communication is experiencing rapid growth in technology, markets and range of services. This rapid growth has driven the recent surge of research and development activities for high-data-rate/high-mobility wireless systems, with improved network performance and enhanced economics. One technology thrust in wireless communications is the use of adaptive antennas at the transceiv...

Some assert that it is impossible to test preference restrictions against revealed preference. The “goodness” preference restriction simply assumes that one value of a nonmarket good is preferred over another other with any fixed commodity consumption. This paper uses a preference-theoretic methodology to show how goodness can be falsified by revealed preference for compensation-based welfare a...

INTRODUCTION The empirical evidence for the effectiveness of excise tax increases as a tool for tobacco control and for generating government revenue is overwhelming. Although initially this evidence was generated primarily in high-income countries, the past two decades has seen much evidence originating in low-income and middle-income countries. The findings are broadly similar. The answer to ...

Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA Center for Primary Care and Outcomes Research/Center for Health Policy, Stanford University, Stanford, California, USA School of Public Health, University of California, Berkeley, California, USA Department of Medicine, Center for Health and the Social Sciences, University of Chicago, Chicago, Illinoi...

Health researchers commonly use the notion of complexity to indicate the problems faced in evaluating the effectiveness of many non-drug interventions.1-3 However, although it is rarely delineated, complexity has two meanings. In the first it is a property of the intervention, and in the second it is a property of the system in which the intervention is implemented. We examine the implications ...