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Articles 211 - 240 of 17895
Full-Text Articles in Social and Behavioral Sciences
Geomorphology And Policy For Restoration Of Impounded American Rivers: What Is "Natural"?, William Graf
Geomorphology And Policy For Restoration Of Impounded American Rivers: What Is "Natural"?, William Graf
William L. Graf
No abstract provided.
Soil Erosion, William Graf
Quaternary Geology And Geomorphology, P. Caulkins, William Graf
Quaternary Geology And Geomorphology, P. Caulkins, William Graf
William L. Graf
No abstract provided.
Applied Geomorphology, William Graf
The State Of The Rio Grande/Rio Bravo, William Graf
The State Of The Rio Grande/Rio Bravo, William Graf
William L. Graf
No abstract provided.
Geomorphologic Measurements From Ground-Based Photographs, William Graf
Geomorphologic Measurements From Ground-Based Photographs, William Graf
William L. Graf
No abstract provided.
Mercury Transport In Stream Sediments Of The Colorado Plateau, William Graf
Mercury Transport In Stream Sediments Of The Colorado Plateau, William Graf
William L. Graf
Field, documentary, and laboratory analyses show that geomorphic processes are a central component in explaining the origins and transportation of the 2,200 kg of mercury annually deposited in Lake Powell in Arizona and Utah. Almost all the mercury in the lake is derived from weathering of natural source rocks in the lake's 279,000 km2 drainage area and delivered in fluvial sediments. Of the mean annual mercury input to the lake, 40 percent comes from a single tributary, the Green River. The Colorado River contributes 40 percent of the water to the lake, but only 6 percent of the mercury. Local …
Issues Concerning Phreatophyte Clearing, Revegetation, And Water Savings Along The Gila River, Arizona, William Graf, Duncan Patten, Bonnie Turner
Issues Concerning Phreatophyte Clearing, Revegetation, And Water Savings Along The Gila River, Arizona, William Graf, Duncan Patten, Bonnie Turner
William L. Graf
A detailed analysis of the published results of the U. S. Geological Survey Phreatophyte Project conducted in the area of interest for the Corps of Engineers Camelsback Dam study provides the following results. It appears that the figure of 18.53 inches per year for water savings from phreatophyte clearing along the Gila River in southeast Arizona should not be used for predicting potential water salvage because of large sampling errors, measurement errors, and the inherent variability of the natural processes of evapotranspiration. An extensive literature review shows that no dependable values are available for the Gila River project area. It …
Resources, The Environment, And The American Experience, William Graf
Resources, The Environment, And The American Experience, William Graf
William L. Graf
This paper represents an attempt to trace the development of the change in American attitudes toward resources and the environment and to analyze past, present, and future trends in resource development and environmental protection.
A Lei De Razao Em Geomorfologia Fluvial, William Graf
A Lei De Razao Em Geomorfologia Fluvial, William Graf
William L. Graf
No abstract provided.
Arid Zone Settlement Planning: The Israeli Experience, By G. Golany, William Graf
Arid Zone Settlement Planning: The Israeli Experience, By G. Golany, William Graf
William L. Graf
No abstract provided.
Use Of Scientific Methods In River Research Section, William Graf
Use Of Scientific Methods In River Research Section, William Graf
William L. Graf
No abstract provided.
Downstream Hydrologic And Geomorphic Effects Of Large Dams On American Rivers, William Graf
Downstream Hydrologic And Geomorphic Effects Of Large Dams On American Rivers, William Graf
William L. Graf
The hydrology and geomorphology of large rivers in America reflect the pervasive influence of an extensive water control infrastructure including more than 75,000 dams. One hundred thirty-seven of the very large dams, each storing 1.2 km3 (106 acre feet) of water or more, alter the flows of every large river in the country. The hydrologic effects of these very large dams emerge from an analysis of the stream gage records of 72 river reaches organized into 36 pairs. One member of each pair is an unregulated reach above a dam, whereas the other is a regulated reach downstream from the …
Geomorphology And American Dams: The Scientific, Social, And Economic Context, William Graf
Geomorphology And American Dams: The Scientific, Social, And Economic Context, William Graf
William L. Graf
American geomorphologic research related to dams is embedded in a complicated context of science, policy, economics, and culture. Research into the downstream effects of large dams has progressed to the point of theory-building, but generalization and theory-building are from this research because (1) it is highly focused on a few locations, (2) it concerns mostly very large dams rather than a representative sample of sizes, (3) the available record of effects is too short to inform us on long-term changes, (4) the reversibility of changes imposed by dam installation and operation is unknown, and (5) coordinated funding for the needed …
Changing Rivers, William Graf
On The Rivers Of Canyonlands, William Graf
The Impact Of Suburbanization On Fluvial Geomorphology, William Graf
The Impact Of Suburbanization On Fluvial Geomorphology, William Graf
William L. Graf
Analysis of aerial photography for the period 1950–1971 and field data collected from 1970 to 1974 indicate that in the Denver area suburban development has caused significant changes in fluvial systems. By first introducing large quantities of sediment and later by increasing surface runoff, suburban development leads to an expansion of floodplains followed by downcutting of streams. As areas of suburban development increase, greater percentages of stream lengths are dominated by transportation, and lesser percentages are dominated by erosion and deposition.
Spatial Queries In The Presence Of Obstacles, Jun Zhang, Dimitris Papadias, Kyriakos Mouratidis, Manli Zhu
Spatial Queries In The Presence Of Obstacles, Jun Zhang, Dimitris Papadias, Kyriakos Mouratidis, Manli Zhu
Kyriakos MOURATIDIS
Despite the existence of obstacles in many database applications, traditional spatial query processing utilizes the Euclidean distance metric assuming that points in space are directly reachable. In this paper, we study spatial queries in the presence of obstacles, where the obstructed distance between two points is defined as the length of the shortest path that connects them without crossing any obstacles. We propose efficient algorithms for the most important query types, namely, range search, nearest neighbors, e-distance joins and closest pairs, considering that both data objects and obstacles are indexed by R-trees. The effectiveness of the proposed solutions is verified …
Continuous Medoid Queries Over Moving Objects, Stavros Papadopoulos, Dimitris Sacharidis, Kyriakos Mouratidis
Continuous Medoid Queries Over Moving Objects, Stavros Papadopoulos, Dimitris Sacharidis, Kyriakos Mouratidis
Kyriakos MOURATIDIS
In the k-medoid problem, given a dataset P, we are asked to choose kpoints in P as the medoids. The optimal medoid set minimizes the average Euclidean distance between the points in P and their closest medoid. Finding the optimal k medoids is NP hard, and existing algorithms aim at approximate answers, i.e., they compute medoids that achieve a small, yet not minimal, average distance. Similarly in this paper, we also aim at approximate solutions. We consider, however, the continuous version of the problem, where the points in P move and our task is to maintain the medoid set on-the-fly …
Spatial Cloaking Revisited: Distinguishing Information Leakage From Anonymity, Kar Way Tan, Yimin Lin, Kyriakos Mouratidis
Spatial Cloaking Revisited: Distinguishing Information Leakage From Anonymity, Kar Way Tan, Yimin Lin, Kyriakos Mouratidis
Kyriakos MOURATIDIS
Location-based services (LBS) are receiving increasing popularity as they provide convenience to mobile users with on-demand information. The use of these services, however, poses privacy issues as the user locations and queries are exposed to untrusted LBSs. Spatial cloaking techniques provide privacy in the form of k-anonymity; i.e., they guarantee that the (location of the) querying user u is indistinguishable from at least k-1 others, where k is a parameter specified by u at query time. To achieve this, they form a group of k users, including u, and forward their minimum bounding rectangle (termed anonymzing spatial region, ASR) to …
Medoid Queries In Large Spatial Databases, Kyriakos Mouratidis, Dimitris Papadias, Spiros Papadimitriou
Medoid Queries In Large Spatial Databases, Kyriakos Mouratidis, Dimitris Papadias, Spiros Papadimitriou
Kyriakos MOURATIDIS
Assume that a franchise plans to open k branches in a city, so that the average distance from each residential block to the closest branch is minimized. This is an instance of the k-medoids problem, where residential blocks constitute the input dataset and the k branch locations correspond to the medoids. Since the problem is NP-hard, research has focused on approximate solutions. Despite an avalanche of methods for small and moderate size datasets, currently there exists no technique applicable to very large databases. In this paper, we provide efficient algorithms that utilize an existing data-partition index to achieve low CPU …
A Study On The Development Of A Global Community From A Legal Perspective, Sung-Soo Han
A Study On The Development Of A Global Community From A Legal Perspective, Sung-Soo Han
Brigham Young University International Law & Management Review
No abstract provided.
Before We Go: Vacation Reading Suggestions
Before We Go: Vacation Reading Suggestions
China Beat Blog: Archive 2008-2012
China Beat will be taking a holiday break until January 3. Before we move on to 2011, though, here’s a short round-up of pieces from 2010 that you shouldn’t miss:
• We’re still doing a bit of catching up as we recover from the end of the fall academic quarter, so please forgive us for being a bit behind on covering both the recent tensions between North and South Korea and also the controversial release of documents by WikiLeaks. On North Korea, read Evan Osnos, “Lips and Teeth,”and listen to Mary Kay Magistad of PRI’s The World. For a China …
University Of Richmond Climate Action Plan, University Of Richmond
University Of Richmond Climate Action Plan, University Of Richmond
Plans
The Climate Action Plan for the University of Richmond establishes the framework for achieving the University’s climate action goals under the American College and University Presidents Climate Commitment. The University of Richmond’s goal is to reduce greenhouse gas emissions 30% by 2020 and 100% by 2050. In addition to emissions reduction, the Climate Action Plan articulates goals for embedding sustainability into the curricular and co-curricular aspects of a Richmond education. The plan has been developed under the leadership of the Sustainability Working Group and the University’s Sustainability Coordinator. Climate Action Plan subgroups, with representation of staff, faculty, and students, drafted …
Constraints Of The Agreement On South Asian Free Trade Area And Saarc Agreement On Trade In Services Militating Against Sub-Regional Trade Proliferation In South Asia, Rizwanul Islam
Brigham Young University International Law & Management Review
No abstract provided.
Faith Based Environmental Stewardship: Practices And Attitudes Of Christian Churches On Virginia’S Northern Neck And Eastern Shore, Paoula Sehannie
Faith Based Environmental Stewardship: Practices And Attitudes Of Christian Churches On Virginia’S Northern Neck And Eastern Shore, Paoula Sehannie
Theses and Dissertations
In recent years there has been a growing interest in the relationship between religion and the environment. The purpose of this project is to explore the environmental practices and attitudes of Christian churches in two Virginia Communities. The two communities; the Northern Neck and Eastern Shore are located on the Chesapeake Bay and have a shared history of dependence on the Bay. The results of the dissertation demonstrate the prevalence of environmental programs in the population, the nature of these programs and the respondents’ attitudes towards a host of environmental issues. These results can be used by environmental professionals and …
Zach's News, Georgia Southern University, Zach S. Henderson Library
Zach's News, Georgia Southern University, Zach S. Henderson Library
University Libraries News Online (2008-2023)
- Printing on campus
Not Quite The Sum Of Its Parts: Public Diplomacy From An Australian Perspective, Caitlin Byrne
Not Quite The Sum Of Its Parts: Public Diplomacy From An Australian Perspective, Caitlin Byrne
Caitlin Byrne
While public diplomacy has emerged as the subject of much attention internationally, Australia appears disengaged from the discussions and Australia’s public diplomacy program appears to be lagging behind. Closer examination of Australia’s public diplomacy program, coordinated by the Department of Foreign Affairs and Trade (DFAT) reveals that public diplomacy is not well understood within bureaucratic and academic circles; is lacking in strategic coordination, and is consistently under-resourced. Indeed, when it comes to Australia’s public diplomacy, it appears that the whole may not be greater than the sum of the parts.
The purpose of this paper is to examine the current …
The Diverse Neurogeography Of Emotional Experience: Form Follows Function, Christoper Sharpley, Vicki Bitsika
The Diverse Neurogeography Of Emotional Experience: Form Follows Function, Christoper Sharpley, Vicki Bitsika
Vicki Bitsika
The experience of emotion underlies emotional expression and consequent action. Although several theoretical models of emotion have suggested that emotional expression is reciprocally involved with sensory inputs and behavioural responses to environmental stimuli, these discussions have largely focused upon fear and its survival value to the organism. By describing research studies across a wide range of emotions and the specific brain regions that are associated with those emotions, this review raises the hypothesis that the “form” of emotional experience neurogeography has followed the “function” associated with developing complex emotional and behavioural responses to challenging environmental stimuli. This separation of emotions …
A Critical Analysis Of Arewa House Arabic Manuscripts Repository And Their Preservation C. 1970-2009, Musa Salih Muhammad
A Critical Analysis Of Arewa House Arabic Manuscripts Repository And Their Preservation C. 1970-2009, Musa Salih Muhammad
Musa Salih Muhammad
Arabic / Ajami manuscript collection of Arewa House Centre for Historical Documentation and Research, ABU Zaria, Nigeria composed of pre-jihad and 19th century literatures. This literary tradition had its origin in the Islamic intellectual culture which developed in Nigeria since the 11th century A.D. The influx of scholars like Imam Suyudy (Born 1 Rajab 849/3 October 1445 and died 19 Jumada Ulaa 911/ 18 October 1505), and Sheikh Al-Magheeli (d. 1504) into the country as well as the establishment of the Sokoto Caliphate in the 19th century led to the production of hundreds of thousands of manuscripts on various topics …