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Articles 5491 - 5520 of 6139
Full-Text Articles in Entire DC Network
Land Development And Biotechnology At The Claremont Colleges, Paul Faulstich
Land Development And Biotechnology At The Claremont Colleges, Paul Faulstich
Pitzer Faculty Publications and Research
Founded on the Oxford model of a cluster of institutions, the Claremont Colleges has periodically established a new school. In the Spring of 1997, the Board of Fellows of the Claremont University Center charged with policy-making for the consortium-voted to establish a seventh college; the Keck Graduate Institute of applied life sciences. or bioengineering. Despite other landholdings, including a golf course and a non-operational gravel quarry, the Board of Fellows voted to site the New Venture on a portion-approximately eleven acres--of the Bernard Biological Field Station. (Pitzer's vote was cast against building on the Field Station.)
Announcements: February 1999
Drought Network News (1994–2001)
Contents:
International Symposium on High Altitude and Sensitive Ecological Environmental Geotechnology
5th International Symposium on Environmental Geotechnology and Global Sustainable Development
10th Global Warming International Conference & Expo (GW10)
New Book
The Relative Importance Of Patch Area And Perimeter–Area Ratio To Grassland Breeding Birds, Christopher J. Helzer, Dennis E. Jelinski
The Relative Importance Of Patch Area And Perimeter–Area Ratio To Grassland Breeding Birds, Christopher J. Helzer, Dennis E. Jelinski
School of Natural Resources: Faculty Publications
Habitat fragmentation has been implicated as a major cause of population decline in grassland birds. We tested the hypothesis that a combination of area and shape determines the use of grassland patches by breeding birds. We compared both species richness and individual species presence in 45 wet meadow grasslands in the floodplain of the central Platte River, Nebraska. Bird data were collected through the use of belt transects and supplemented by walking and listening outside transects. Our data supported our primary hypothesis that perimeter–area ratio, which reflects both the area and shape of a patch, is the strongest predictor of …
Symposia
Journal of the Minnesota Academy of Science
Abstracts from the Symposia Papers given at the 67th Annual Meeting for the Journal of the Minnesota Academy of Science.
The Role Of Trust In The North Blackforest: An Evaluation Of A Citizen Panel Project, Ragnar E. Löfstedt
The Role Of Trust In The North Blackforest: An Evaluation Of A Citizen Panel Project, Ragnar E. Löfstedt
RISK: Health, Safety & Environment (1990-2002)
Dr. Löfstedt explores the effectiveness of a public participation project conducted in Germany, designed to involve citizens in the siting of municipal waste disposal plants.
Resource Law Notes Newsletter, No. 45, Winter Issue, 1999, University Of Colorado Boulder. Natural Resources Law Center
Resource Law Notes Newsletter, No. 45, Winter Issue, 1999, University Of Colorado Boulder. Natural Resources Law Center
Resource Law Notes: The Newsletter of the Natural Resources Law Center (1984-2002)
No abstract provided.
Procedure For Raising Trout In The Classroom As Part Of Environmental Education, Ronn Chapman
Procedure For Raising Trout In The Classroom As Part Of Environmental Education, Ronn Chapman
Theses Digitization Project
No abstract provided.
Africa: An Integrated Curriculum Unit, Grades 2-4, Institute For The Development Of Gifted Education, Ricks Center For Gifted Children, University Of Denver
Africa: An Integrated Curriculum Unit, Grades 2-4, Institute For The Development Of Gifted Education, Ricks Center For Gifted Children, University Of Denver
Ricks Curriculum Units Series
An integrated curriculum is an instructional approach that connects the disciplines to an underlying theme or topic. Immersing students in an integrated-thematic unit provides the backdrop for experiences to occur across the disciplines. Shaping coursework around integrated themes is especially appropriate for gifted students, however using an integrated-thematic curriculum is appropriate for all learners as it develops students' abilities to make connections, to solve problems by looking at multiple perspectives, and to integrate information from different fields of experience. An integrated-thematic curriculum permits students to be active participants in their own learning as they design their own explorations and take …
Evolution Of Quaternary Intraplate Mafic Lavas Detailed Using Helium-3 Surface Exposure And Argon-40/Argon-39 Dating, And Elemental And Helium, Strontium, Neodymium And Lead Isotopic Signatures: Potrillo Volcanic Field, New Mexico, United States Of America And San Quintin Volcanic Field, Baja California Norte, Mexico, Wendi Joan Whitehead Williams
Open Access Theses & Dissertations
The Pleistocene Potrillo volcanic field (PVF) resides within the southern axis of the Rio Grande Rift, New Mexico, U.S.A., near the eastern extent of the Basin and Range Province. Its alkalic mafic volcanism has resulted in several hundred cones, flows and maars distributed over approximately 4,600 km2. Alignments are segregated into two halves relative to the East Robledo fault system that dissects this field. Three of the five maars have brought peridotitic and lower to upper crustal xenoliths to the surface; several older, non maar-related flows from the west half of the field host ultramafic clots. Stratigraphic relationships, 3He surface …
A Geomorphology Of Megaliths: Neolithic Landscapes In The Alto Alentejo, Portugal, Gregory A. Pope, Vera C. Miranda
A Geomorphology Of Megaliths: Neolithic Landscapes In The Alto Alentejo, Portugal, Gregory A. Pope, Vera C. Miranda
Department of Earth and Environmental Studies Faculty Scholarship and Creative Works
The Alentejo region of Portugal is known for a high concentration of Neolithic-aged megalithic monuments: tombs (dolmens or antas) and ceremonial features such as standing stones (menhirs) and stone circles (cromleques). Concentrations of these monuments tend to be found on or near weathered granite terrains. Unloading slabs and remnant corestones appear to be the stones of preference for megalith makers in the Alentejo district of Portugal. Some of the stones may have been imported from distant sources, but most appear to be of local origin. In general, most stones do not appear to have been altered much from their original …
Internetics: Technologies, Applications And Academic Field, Or, Parallel Computing And Computational Science Do Not Quite Work, Geoffrey C. Fox
Internetics: Technologies, Applications And Academic Field, Or, Parallel Computing And Computational Science Do Not Quite Work, Geoffrey C. Fox
Northeast Parallel Architecture Center
Ten years ago, we were all sure that parallel computing technology and the interdisciplinary academic field of computational science would be center pieces of both academic and economic growth. We show that this insight was, in principle, correct but was an incomplete vision for large-scale computation implies both increased computer power and increasing numbers of users and applications. Parallel computing undoubtedly works on essentially all problems, but we were unable to produce deployable software systems. Further, few industries could achieve adequate return to justify investment in parallel computers, except in a few areas such as databases. Computational science is the …
Object Oriented Enterprise Modeling And Distributed Cognition At A New University: Csu Monterey Bay, Armando A. Arias Jr., Beryl L. Bellman
Object Oriented Enterprise Modeling And Distributed Cognition At A New University: Csu Monterey Bay, Armando A. Arias Jr., Beryl L. Bellman
SSGS Faculty Publications and Presentations
No abstract provided.
Issues Surrounding The Valuation Of A Park: Applying Commission For National Parks And Protected Area Guidelines To Awenda Provincial Park, Ontario, Tatania E. Stroud
Issues Surrounding The Valuation Of A Park: Applying Commission For National Parks And Protected Area Guidelines To Awenda Provincial Park, Ontario, Tatania E. Stroud
Theses and Dissertations (Comprehensive)
The goals of this project are to apply and assess the applicability of the World Conservation Union (1 UCN) Commission for National Parks and Protected Area Guidelines for Economic Assessment of Protected Areas to Awenda Provincial Park, and to compare the results with existing studies on valuing protected areas. This project explores the value of tourism and recreation at Awenda Provincial Park, and the expression of the value of natural areas in economic terms through the application of the CNPPA Guidelines. This project is an initial inquiry into the applicability of the CNPPA guidelines, and is based on data from …
Assessment Of Capacity For Water Resource Management: A Case Study Of A Small Watershed In Nepal, Bhanu Raja Neupane
Assessment Of Capacity For Water Resource Management: A Case Study Of A Small Watershed In Nepal, Bhanu Raja Neupane
Theses and Dissertations (Comprehensive)
Use of local knowledge, increased public participation, and capacity building – singly or in combination – are identified as major strategies to enhance sustainable and integrated management of water. Recently, capacity assessment has been recognized as one of the most effective means to operationalize these strategies in the context of water resource management However, the contemporary literature shows local-level capacity assessment as one of the least explored areas. The literature shows that capacity assessment still lacks conceptual clarity and an implementable framework. Efforts are being made in this direction, but very few focus below the national level. Many such efforts …
Environmental Vulnerability And Agriculture In The Karstic Domain: Landscape Indicators And Cases In The Atlas Highlands, Morocco, Brahim Akdim, Mohammed Amyay
Environmental Vulnerability And Agriculture In The Karstic Domain: Landscape Indicators And Cases In The Atlas Highlands, Morocco, Brahim Akdim, Mohammed Amyay
International Journal of Speleology
After the brief presentation of the major karstic areas in Morocco, the article focused essentially on the Atlas mountains to investigate the impact of the agriculture on the natural systems equilibrium. Socio-economic changes (demographic pressure, escalation of the landscape use, utilisation of new techniques in water harvesting, etc...) have sometimes fathered mechanisms of degradation. Many indicators seem to reflect these mechanisms. The pedologic indicators, soil erosion, the hydrologic and geomorphic indicators, are apprehended to demonstrate existent correlation between different variables and the often negative impacts of land over-use in the karstic domain of the Middle Atlas.
Designing An Analytic Deliberative Process For Environmental Health Policy Making In The U.S. Nuclear Weapons Complex, Seth Tuler, Thomas Webler
Designing An Analytic Deliberative Process For Environmental Health Policy Making In The U.S. Nuclear Weapons Complex, Seth Tuler, Thomas Webler
RISK: Health, Safety & Environment (1990-2002)
Using a National Research Council Report as a centerpiece, Drs. Tuler and Webler evaluate the effectiveness of a conceptual approach to risk policy-making.
Creating A New University Through Object Oriented Enterprise Modeling: A Study Of Communications Knowledge Management & Distributed Cognition, Armando A. Arias Jr., Beryl L. Bellman
Creating A New University Through Object Oriented Enterprise Modeling: A Study Of Communications Knowledge Management & Distributed Cognition, Armando A. Arias Jr., Beryl L. Bellman
SSGS Faculty Publications and Presentations
Enterprise based object oriented (OO) and Unified Modeling Language (UML) modeling makes it possible to build the needed visual environments to organize people, technologies and activities (Arias, 1999d). In our modeling approach, the focus is on "things and relationships between things" described in commonly used terms. The modeling software bridges the so-called "semantic gap" between the people and the computer language (Booch, Rumbaugh & Jacobson, 1999). An object can be a product, a process, a person, a team, a company, an application or the inter-relationship between other objects. Objects can be pictured on the screen as maps formed by personalized …
A Woman's Field Is Made At Night: Gendered Land Rights And Norms In Burkina Faso, Michael Kevane, Leslie C. Gray
A Woman's Field Is Made At Night: Gendered Land Rights And Norms In Burkina Faso, Michael Kevane, Leslie C. Gray
Economics
Gendered social norms and institutions are important determinants of agricultural activities in southwestern Burkina Faso. This paper argues that gendered land tenure, in particular, has effects on equity and efficiency. The usual view of women as holders of secondary, or indirect, rights to land must be supplemented by a more nuanced understanding of tenure. Women's rights are in fact considerably more complex than the simple right to fields from their husbands. First, women's rights to property obtained from men may be coupled with other rights and obligations. In many ethnic groups, women have share rights to the harvest of their …
Fact Sheet, Yale University Office Of Institutional Research
Fact Sheet, Yale University Office Of Institutional Research
Fact Sheets
No abstract provided.
Sub-Lethal Effects Of Hypoxia/Hypercapnia On Callinectes Sapidus In The York River Estuary, Virginia, Sandra R. Hypes
Sub-Lethal Effects Of Hypoxia/Hypercapnia On Callinectes Sapidus In The York River Estuary, Virginia, Sandra R. Hypes
Theses and Dissertations
This research examined effects of hypoxic environments on blue crabs, Callinectes sapidus in an estuarine environment. Hypoxic conditions were treated as a multiple stressor involving low dissolved oxygen (D.O.), increased carbon dioxide (hypercapnia), and low pH concurrently. The objectives were to: 1) identify hypoxiahypercapnia by monitoring D.O. and pH as an indicator of hypercapnia in shallow regions of the York River, 2) measure blue crab abundance, and 3) describe blue crab responses to hypoxiahypercapnia via field work at Taskinas Creek and lab measurements of respiration. Ambient D.O. and pH were positively correlated in the Taskinas Creek and York River sites …
Nitrate Attenuation In A Narrow Non-Forested Riparian Buffer Zone In An Agricultural Watershed In Southern Ontario, Mark David Harris
Nitrate Attenuation In A Narrow Non-Forested Riparian Buffer Zone In An Agricultural Watershed In Southern Ontario, Mark David Harris
Theses and Dissertations (Comprehensive)
Riparian buffer zones are defined as strips of natural vegetation separating streams or lakes from surrounding upland landscapes. These zones may effectively reduce the nitrate-N load in shallow ground water draining intensively fertilized agricultural regions. Contemporary research has tended to focus on wide, forested riparian zones situated on poorly drained lowland sites. In addition, research has typically focused on the growing season, when the ecosystem is biologically active, with relatively day hydrological conditions. This field study monitored spatial and temporal patterns of nitrate-N in a comparatively narrow, non-forested buffer zone situated in an upland agricultural watershed in southern Ontario. Results …
Regional Ecology Of The St. Elias Mountain Parks: A Synthesis With Management Implications (British Columbia, Yukon, Alaska), Ryan Kenneth Danby
Regional Ecology Of The St. Elias Mountain Parks: A Synthesis With Management Implications (British Columbia, Yukon, Alaska), Ryan Kenneth Danby
Theses and Dissertations (Comprehensive)
The St. Elias region of North America occupies portions of British Columbia, Alaska, and the Yukon Territory and comprises a network of public lands and protected areas managed by a variety of agencies. This thesis characterizes and analyzes the broad- scale, or regional, ecology of these lands and provides an assessment of the implications this has for ecosystem-based management—particularly as it relates to intergovernmental cooperation. A multi-stage, map-based, multidisciplinary process is used to synthesize information on the region’s physical, biological, and institutional environments. The fields of conservation biology and landscape ecology provide theoretical foundations for analysis. The ecological synthesis and …
Natural Disturbance And Land Cover Patterns In A Mountainous, Sub-Arctic Environment (Yukon), A. Bruce Wurtele
Natural Disturbance And Land Cover Patterns In A Mountainous, Sub-Arctic Environment (Yukon), A. Bruce Wurtele
Theses and Dissertations (Comprehensive)
The dynamics of landscape pattern and disturbance were studied in the ‘green belt’ area of Kluane National Park, Yukon. White spruce montane forests and various sub-alpine and alpine vegetation communities dominate the study area, adjoining the Kluane Ranges of the St. Elias Mountains. Combining theory on landscape structure and function, the relationships of disturbance regimes and landscape pattern are examined. The landscape mosaic was mapped from classification of multispectral Landsat Thematic Mapper imagery. Landscape pattern was measured using quantitative indices of patch, class, and landscape attributes. Natural disturbance regimes, important to land cover development in the region, include fire, insect …
Uncertainty In Recharge From Subsidence Craters At Frenchman Flat, Nevada Test Site: Impacts Of Initial And Boundary Conditions And Media Properties, David Matthew Ely
Uncertainty In Recharge From Subsidence Craters At Frenchman Flat, Nevada Test Site: Impacts Of Initial And Boundary Conditions And Media Properties, David Matthew Ely
UNLV Theses, Dissertations, Professional Papers, and Capstones
The Nevada Test Site has over 400 subsidence craters formed by the collapse of overlying rock following underground nuclear tests. Under natural conditions, infiltration and recharge would not be considered likely due to infrequent precipitation events and extreme evapotranspiration. Crater U5a in Frenchman Flat was chosen for study because it intercepts significantly more drainage than surrounding craters. Vadose zone modeling was conducted to test the sensitivity of water movement to boundary and initial conditions. The effects of ponding depth was negligible but depth of wetting front movement was highly dependent on the lateral extent of the ponds. The model was …
Laser-Plasma Harmonics With High-Contrast Pulses And Designed Prepulses, R.S. Marjoribanks, L. Zhao, F.W. Budnik, G. Kulcsar, A. Vitcu, H. Higaki, R. Wagner, Anatoly Maksimchuk, Donald P. Umstadter, S.P. Le Blanc, M.C. Downer
Laser-Plasma Harmonics With High-Contrast Pulses And Designed Prepulses, R.S. Marjoribanks, L. Zhao, F.W. Budnik, G. Kulcsar, A. Vitcu, H. Higaki, R. Wagner, Anatoly Maksimchuk, Donald P. Umstadter, S.P. Le Blanc, M.C. Downer
Donald Umstadter Publications
One aspect of the complexity of mid- and high-harmonic generation in highintensity laser-plasma interactions is that nonlinear hydrodynamics is virtually always folded together with the nonlinear optical conversion process. We have partly dissected this issue in picosecond and subpicosecond interactions with preformed plasma gradients, imaging and spectrally resolving low- and mid-order harmonics. We describe spatial breakup of the picosecond beam in preformed plasmas, concomitant broaden~ng and breakup of the harmonic spectrum. presumably through self-phase modulation, together with data on the sensitivity of harmonics production efficiency to the gradient or extent of prefomed plasma. Lastly. we show preliminary data of regular …
Plastic Pebbles, Virginie H. Mitchem
Plastic Pebbles, Virginie H. Mitchem
Humanistic Mathematics Network Journal
No abstract provided.
Modelling Direct Episodic Recharge In The Western Australian Wheatbelt, F Lewis, Cooperative Research Centre For Catchment Hydrology (Australia)
Modelling Direct Episodic Recharge In The Western Australian Wheatbelt, F Lewis, Cooperative Research Centre For Catchment Hydrology (Australia)
Resource management technical reports
In agricultural regions of Western Australia, salinity is spreading. This is because the area taken up by groundwater discharge is increasing as a result of increased groundwater recharge following the replacement of native vegetation systems by annual crops and pasture species. Attempts to reduce groundwater recharge are now being made as it is hoped that this will decrease the rate of land salinisation. At several sites, average recharge rates have been estimated to be from 2% to 13% of the average annu ter hydrographs from the agricultural regions indicate that at some sites recharge does not occur as small amounts …
Vegetation Analysis: A Graphical Analysis Of Plant Succession In Desert Communities Affected By Fire, Jeff Lantow
Vegetation Analysis: A Graphical Analysis Of Plant Succession In Desert Communities Affected By Fire, Jeff Lantow
UNLV Theses, Dissertations, Professional Papers, and Capstones
The Mojave Desert is affected by fire every year. With each fire comes the removal of old growth and, in its place, new growth – consisting primarily of those species which thrive in disturbed areas. The focus of my research is to look at plant communities that have been disturbed by fire, and examine the successional pathway of these disturbed environments. The seven environments I analyzed were burned within the last twenty years and are found in the Coleogyne ramosissima ecotone throughout the Spring Mountain range near Las Vegas, Nevada. The data was collected with randomly chosen circle plots in …
Water Conservation In The Las Vegas Valley, Judith M. Keir
Water Conservation In The Las Vegas Valley, Judith M. Keir
UNLV Theses, Dissertations, Professional Papers, and Capstones
This thesis deals primarily with residential use of water in the Las Vegas Valley, an arid climate located in the Mojave Desert, and whether the education of people living here has any bearing on whether or not they conserve water. Many of the residents of the Las Vegas Valley have moved from other areas of the country, and perhaps are not aware of the fact that there is a limited supply of water available to the Valley. I believe that people are not necessarily wasteful, and that they would want to conserve water, if they were aware that conservation and …
Stachybotrys: Is Nevada At Risk?, Terrylynn C. Foley
Stachybotrys: Is Nevada At Risk?, Terrylynn C. Foley
UNLV Theses, Dissertations, Professional Papers, and Capstones
Stachybotrys chartarum (atra) is a toxigenic fungus that is known to adversely impact the health of animals. Until recently, there have only been a few documented clinical reports linking Stachybotrys chartarum to human health effects. Scientists are increasingly convinced that Stachybotrys and its metabolites are responsible for several adverse health effects experienced by people all over the world, although conclusive proof has yet to be established. All the physical requirements needed for indoor Stachybotrys sporulation and growth is provided through water leaks (plumbing, roof or ceiling), flood events, nutrient sources (cellulose and nitrogen), pH, and temperature(23° - 28°C). Stachybotrys has …