Local ecological knowledge and practical fisheries management in the tropics: A policy brief     

Douglas Clyde Wilson  Jesper Raakjr  Poul Degnbol 《Marine Policy》2006,30(6):794-801

This policy brief is a summary product of seven case studies examining the integration of local ecological knowledge in fisheries management. Each case began with a series of in-depth interviews with local fishers, after which their answers were examined using both social and biological approaches to assess the possibility of using the information as the basis of simple, valid and locally acceptable indictors for fisheries management. We found that allocation and knowledge issues are closely interlinked and must be addressed in concert, and that the negotiation of shared understandings between multiple sources of knowledge must be a continuous process within an adaptive framework rather than a question of identifying a fixed set of indicators.  相似文献   

Initial relative positioning results using the global positioning system     

Clyde C. Goad  Benjamin W. Remondi 《Journal of Geodesy》1984,58(2):193-210

The National Geodetic Survey (NGS) has become increasingly involved with research and development for relative positioning using the Global Positioning System (GPS). The NGS has procured two Macrometers^TM and is also a participant in the development of the Texas Instruments' TI4100. The Macrometers were delivered in March 1983 and 3 months of testing has now been completed. These data have been processed using a variety of newly developed processing techniques, and numerical intercomparisons of several base line solutions are given. A byproduct of one technique is the estimation of the relative variations of the ground clocks to the subnanosecond level. ^™Macrometer is a registered trademark of Macrometrics, Inc., Woburn, Massachusetts, U.S.A. Presented at the International Union of Geodesy and Geophysics, XVIII General Assembly, Hamburg, August 15–27, 1983.  相似文献   

Electrical Resistivity Studies to Delimit Zones of Acceptable Ground Water Quality     

Clyde A. Ringstad  Dale C. Bugenig 《Ground Water Monitoring & Remediation》1984,4(4):66-69

A total of four vertical electrical soundings were conducted in a layered andesitic rock aquifer known in places to yield ground water with total dissolved solids (TDS) in excess of 2,000 milligrams per liter (mg/L). The objective of the soundings was to locate zones of moderate to high permeability but with acceptable chemical quality.
The resistivity of a geologic unit is a function that includes the quantity of total dissolved solids in the interstitial water and the distribution of the water within the unit. Thus, the resistivity of most granular soils and rocks is controlled more by porosity, water content and water quality than by the conductivity of the matrix materials.
The electrical data delimited a drill site where it was believed that ground water of acceptable chemical quality could be expected. Completion and test pumping of two exploration wells confirmed the electrical sounding results.
The first test well drilled prior to the survey yielded only small amounts of ground water with total dissolved solids in excess of 2,000 mg/L. The second exploration well drilled at the site as a result of the electrical study yielded in excess of 100 gallons per minute of ground water with total dissolved solids of 830 mg/L.  相似文献   

Atmosphere,Weather, and Baseball: How Much Farther Do Baseballs Really Fly at Denver's Coors Field?     

Frederick Chambers  Brian Page  Clyde Zaidins 《The Professional geographer》2003,55(4):491-504

This article tests the widely held assumption that batted baseballs travel 10 percent farther in Denver than in major‐league ballparks at sea level. An analysis of (1) National League fly‐ball‐distance data for 1995–1998, (2) the micrometeorology of Coors Field, and (3) weather dynamics along the Colorado front range shows that the assumed elevation enhancement of fly‐ball distance has been greatly overestimated due to prevailing weather conditions in downtown Denver. We conclude that the record number of home runs at Coors Field must be attributed as much to the personnel of the Colorado Rockies team and the effects of mile‐high elevation on the act of pitching a baseball as to the effect of low air density on fly‐ball distance.  相似文献   

OCS oil & gas—an assessment of the department of the interior environmental studies program: National Academy of Sciences, Washington, D.C. $7.25     

Clyde C. Richard 《Ocean Engineering》1979,6(5):551

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A far ultraviolet rocket-borne spectrograph     

Webster Cash  Timothy Cook  Clarke Chambellan  Donald Heyse  David Hofmockel  Theodore P. Snow  David Windt  Clyde Zaidins 《Experimental Astronomy》1989,1(2):123-143

A sensitive spectrograph for rocket observations of celestial objects in the 910–1250Å band is described. The instrument incorporates a variety of new technologies that allow unprecedented sensitivity in this difficult, but scientifically rewarding, band. It includes a diamond-turned Wolter-Schwarzschild Type II telescope, a conventional Rowland Circle spectrograph, and resistive anode/micro-channel plate detectors. It has been launched twice from Woomera, Australia where it performed the only observations of SN1987a in its bandpass and discovered a new feature in the diffuse ultraviolet background.  相似文献   

Correction to: Evaluation of a multi-model approach to estimate leaf wetness duration: an essential input for disease alert systems     

Gama  Andre B.  Perondi  Daniel  Dewdney  Megan M.  Fraisse  Clyde W.  Small  Ian M.  Peres  Natalia A. 《Theoretical and Applied Climatology》2022,149(1-2):101-101

Theoretical and Applied Climatology -  相似文献   

The art of the science: climate forecasts for wildfire management in the southeastern United States     

Carla Roncoli  Norman Breuer  David Zierden  Clyde Fraisse  Kenneth Broad  Gerrit Hoogenboom 《Climatic change》2012,113(3-4):1113-1121

This article illustrates how a wildfire risk forecast evolved iteratively based on stakeholder consultations. An assessment based on phone interviews indicates that such forecasts can assist fire management decisions, such as deployment of human, financial, and material resources and management of forest, timber, and habitats, and public safety. But careful attention to communication, collaboration, and capacity building is key to realizing this potential.  相似文献   

Some early vexing optical and mechanical problems of the 13-inch “Pluto” telescope     

Clyde W. Tombaugh 《Icarus》1980,44(1):2-6

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Interviews of Mongolian herders and high resolution precipitation data reveal an increase in short heavy rains and thunderstorm activity in semi-arid Mongolia     

Clyde E. Goulden  Jerry Mead  Richard Horwitz  Munhtuya Goulden  Banzragch Nandintsetseg  Sabrina McCormick  Bazartseren Boldgiv  Peter S. Petraitis 《Climatic change》2016,136(2):281-295

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