Environmental Policy: A course of action or principle adopted or proposed by a government, party, business, or individual that concerns human interactions with nature and natural resources.Conservation of Natural Resources: The protection, preservation, restoration, and rational use of all resources in the total environment.Economics, Behavioral: The combined discipline of psychology and economics that investigates what happens in markets in which some of the agents display human limitations and complications.Health Policy: Decisions, usually developed by government policymakers, for determining present and future objectives pertaining to the health care system.Economics: The science of utilization, distribution, and consumption of services and materials.Economics, Medical: Economic aspects of the field of medicine, the medical profession, and health care. It includes the economic and financial impact of disease in general on the patient, the physician, society, or government.Cost-Benefit Analysis: A method of comparing the cost of a program with its expected benefits in dollars (or other currency). The benefit-to-cost ratio is a measure of total return expected per unit of money spent. This analysis generally excludes consideration of factors that are not measured ultimately in economic terms. Cost effectiveness compares alternative ways to achieve a specific set of results.Models, Economic: Statistical models of the production, distribution, and consumption of goods and services, as well as of financial considerations. For the application of statistics to the testing and quantifying of economic theories MODELS, ECONOMETRIC is available.Resource Allocation: Societal or individual decisions about the equitable distribution of available resources.Health Care Costs: The actual costs of providing services related to the delivery of health care, including the costs of procedures, therapies, and medications. It is differentiated from HEALTH EXPENDITURES, which refers to the amount of money paid for the services, and from fees, which refers to the amount charged, regardless of cost.Dissertations, Academic as Topic: Dissertations embodying results of original research and especially substantiating a specific view, e.g., substantial papers written by candidates for an academic degree under the individual direction of a professor or papers written by undergraduates desirous of achieving honors or distinction.Operations Research: A group of techniques developed to apply scientific methods and tools to solve the problems of DECISION MAKING in complex organizations and systems. Operations research searches for optimal solutions in situations of conflicting GOALS and makes use of mathematical models from which solutions for actual problems may be derived. (From Psychiatric Dictionary, 6th ed)Hospital Planning: Areawide planning for hospitals or planning of a particular hospital unit on the basis of projected consumer need. This does not include hospital design and construction or architectural plans.Decision Support Systems, Management: Computer-based systems that enable management to interrogate the computer on an ad hoc basis for various kinds of information in the organization, which predict the effect of potential decisions.Periodicals as Topic: A publication issued at stated, more or less regular, intervals.Academic DissertationsPublishing: "The business or profession of the commercial production and issuance of literature" (Webster's 3d). It includes the publisher, publication processes, editing and editors. Production may be by conventional printing methods or by electronic publishing.Orthodontics: A dental specialty concerned with the prevention and correction of dental and oral anomalies (malocclusion).Hierarchy, Social: Social rank-order established by certain behavioral patterns.Internet: A loose confederation of computer communication networks around the world. The networks that make up the Internet are connected through several backbone networks. The Internet grew out of the US Government ARPAnet project and was designed to facilitate information exchange.