نتایج جستجو برای recreation

تعداد نتایج: 3054  
2011
Hobson Bryan,

The essence of specialization theory, first published in The Journal of Leisure Research in 1977 (Bryan) and subsequently expanded in a 1979 monograph (Bryan), is that outdoor recreation participants can be placed on a continuum from general interest and low involvement to specialized interest and high involvement. Each level of specialization carries distinctive behaviors and orientations. The...

Journal: :Canadian journal of surgery. Journal canadien de chirurgie 2014
Vivian C McAlister,

Journal: :The Yale Journal of Biology and Medicine 1936
Maurice R. Davie,

ALLERGY OF THE NOSE AND PARANASAL SINUSES. By French K. Hansel. The C. V. Mosby Company. St. Louis, 1936. Pp. 820. $10. John Bostock made the first contribution to the literature of allergy in 1819, and for many years thereafter little or nothing was added to our knowledge. The first American contribution was Morrill Wyman's book "Autumnal Catarrh" published in 1872, revised and enlarged in 187...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2008
Peter Kareiva,

C onservation science is replete with analyses of threats to biodiversity. The IUCN even has a formal taxonomy of threats to imperiled species that can be used to tally up global inventories of threats across taxa or geographies (1). Habitat loss and habitat degradation are touted as the greatest threats, with global warming now also recognized as a major problem along with species introduction...

2017
Robert J. W. Brewin, Kieran Hyder, Andreas J. Andersson, Oliver Billson, Philip J. Bresnahan, Thomas G. Brewin, Tyler Cyronak, Giorgio Dall'Olmo, Lee de Mora, George Graham, Thomas Jackson, Dionysios E. Raitsos,

1 Plymouth Marine Laboratory, Plymouth, Devon, United Kingdom, 2 National Centre for Earth Observation, Plymouth Marine Laboratory, Plymouth, United Kingdom, 3 Lowestoft Laboratory, Centre for Environment, Fisheries and Aquaculture Science, Suffolk, United Kingdom, 4 Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, United States, 5 School of Biological and...

2005
H. Ken Cordell, James L. Chamberlain,

Research on forest recreation over the last 60 years has been voluminous. Research on nontimber forest products (NTFP) has been much less voluminous. In this chapter the history of these two tracks of research has been reviewed. Not all studies are mentioned; rather, a representative selection of the subject matter is discussed. Forest recreation research had its beginnings in the late 1950s wi...

2010
Jennifer Hoger Russell,

In order for the Bureau of Land Management (BLM) to comply with the Government Performance and Results Act (GPRA), and better meet the needs of the public; a visitor satisfaction survey was conducted at 23 BLM recreation sites in 11 states during fiscal year 2010 (FY10). The survey was developed to measure each site's performance related to BLM GPRA Goal 3.1 Provide for a quality recreation exp...

Journal: :Environmental science & technology 2012
Wei Wei, Liding Chen, Lei Yang, F Fred Samadani, Ge Sun,

Wei Wei,*,† Liding Chen,† Lei Yang,† F. Fred Samadani,‡ and Ge Sun †State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China ‡Environmental and Water Resources Management Consultant, Rockville, Maryland 20850, United States Southern Research Station, USDA Forest Service, Raleigh, North Carolina 27606, ...

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