Open Access. Powered by Scholars. Published by Universities.®

Social and Behavioral Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

Physical Sciences and Mathematics

2010

Institution
Keyword
Publication
Publication Type
File Type

Articles 1 - 30 of 924

Full-Text Articles in Social and Behavioral Sciences

Nevada Interagency Volunteer Program: Helping Hands Across Public Lands – Phase Ii: Quarterly Progress Report, Period Covering October 1, 2010 To December 31, 2010, Margaret N. Rees Dec 2010

Nevada Interagency Volunteer Program: Helping Hands Across Public Lands – Phase Ii: Quarterly Progress Report, Period Covering October 1, 2010 To December 31, 2010, Margaret N. Rees

Get Outdoors Nevada

  • The number of records in the volunteer database decreased by 1.17% over the last quarter. The database now contains 6,534 records.
  • Results show an average of 836 visits per month, with an average of 2,081 pages viewed per month.
  • Get Outdoors Nevada supported nineteen volunteer events in a variety of ways. These events utilized 1,225 volunteers whom contributed 6,921 hours of service.
  • Volunteer fall training has been completed with 61 volunteers attending 3 trainings.
  • Fall training has been completed.
  • Spring training scheduling is underway.
  • Volunteer Orientation Training Automation is scheduled to be completed in February ...


Null Element Restoration, Ryan Gabbard Dec 2010

Null Element Restoration, Ryan Gabbard

Publicly Accessible Penn Dissertations

Understanding the syntactic structure of a sentence is a necessary preliminary to understanding its semantics and therefore for many practical applications. The field of natural language processing has achieved a high degree of accuracy in parsing, at least in English. However, the syntactic structures produced by the most commonly used parsers are less detailed than those structures found in the treebanks the parsers were trained on. In particular, these parsers typically lack the null elements used to indicate wh-movement, control, and other phenomena.

This thesis presents a system for inserting these null elements into parse trees in English. It then ...


Spatial Queries In The Presence Of Obstacles, Jun Zhang, Dimitris Papadias, Kyriakos Mouratidis, Manli Zhu Dec 2010

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 Dec 2010

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 ...


Spatial Cloaking Revisited: Distinguishing Information Leakage From Anonymity, Kar Way Tan, Yimin Lin, Kyriakos Mouratidis Dec 2010

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 ...


Medoid Queries In Large Spatial Databases, Kyriakos Mouratidis, Dimitris Papadias, Spiros Papadimitriou Dec 2010

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 ...


Ua668/4 Ogden College Of Science & Engineering Geography & Geology Administration, Wku Archives Dec 2010

Ua668/4 Ogden College Of Science & Engineering Geography & Geology Administration, Wku Archives

WKU Archives Collection Inventories

Records created by and about the administration of the Geography & Geology department.


Ua6/1/1 Lost River Cave & Valley - Oral History Project, Wku Archives Dec 2010

Ua6/1/1 Lost River Cave & Valley - Oral History Project, Wku Archives

WKU Archives Collection Inventories

Unprocessed oral history files regarding Lost River Cave & Valley.


The Effects Of High Density Septic Systems On Surface Water Quality In Gwinnett County, Georgia, John R. Anderson Ii Dec 2010

The Effects Of High Density Septic Systems On Surface Water Quality In Gwinnett County, Georgia, John R. Anderson Ii

Geosciences Theses

Gwinnett County, Georgia experienced rapid growth in the 1970’s without the infrastructure so septic systems were installed for residential homes. The number of septic systems grew to over 85,000 with a density of 487 septic systems per square mile. This study mapped the distribution of septic systems to determine regions of potential pathogen surface water. This study addressed what potential health risks do high density septic systems have on surface water quality and how can the history of Gwinnett County assist in future development in the Metropolitan Atlanta area? It was found that the density of septic systems ...


Ua1b1/3 University Lecture Series, Wku Archives Dec 2010

Ua1b1/3 University Lecture Series, Wku Archives

WKU Archives Collection Inventories

Records created by the University Lecture Series committee which invites distinguished and prominent individuals to lecture at the university. The records include correspondence with potential speakers and programs, posters and recordings of lectures.


Ua1c11/25 Lost River Cave Photo Collection, Wku Archives Dec 2010

Ua1c11/25 Lost River Cave Photo Collection, Wku Archives

WKU Archives Collection Inventories

Photographs and postcards created by Lost River Cave & Valley.


Mind Mapping As An Interactive Tool For Engaging Complex Geographical Issues, David Lloyd, William Boyd, Kristin Den Exter Dec 2010

Mind Mapping As An Interactive Tool For Engaging Complex Geographical Issues, David Lloyd, William Boyd, Kristin Den Exter

Dr Kristin den Exter

Students and communities engaging with complex geographical issues require tools to assist them structure and contextualise data. This paper examines the use of mind mapping as a tool in geographical education. Case studies are presented from a sample of undergraduate and cross-cultural educational settings demonstrating the use of mind mapping in communication, analysis and problem solving. In critiquing this educational tool, we conclude that mind mapping is particularly effective with communities whose cultures are strong on visual communication but weaker on written communication and in cross-cultural situations where use of written English would disadvantage learners.


African Water: An Experience With Project Management In Bulima, Tanzania, Robert Sharp Dec 2010

African Water: An Experience With Project Management In Bulima, Tanzania, Robert Sharp

Honors Theses

Details the author's experiences researching, designing, and implementing a water system for a boarding school in Africa.


Radiative Forcing Over The Conterminous United States Due To Contemporary Land Cover Use Change And Sensitivity To Snow And Interannual Albedo Variability, Christoper A. Barnes, David P. Roy Dec 2010

Radiative Forcing Over The Conterminous United States Due To Contemporary Land Cover Use Change And Sensitivity To Snow And Interannual Albedo Variability, Christoper A. Barnes, David P. Roy

GSCE Faculty Publications

Satellite‐derived land cover land use (LCLU), snow and albedo data, and incoming surface solar radiation reanalysis data were used to study the impact of LCLU change from 1973 to 2000 on surface albedo and radiative forcing for 58 ecoregions covering 69% of the conterminous United States. A net positive surface radiative forcing (i.e., warming) of 0.029 Wm−2 due to LCLU albedo change from 1973 to 2000 was estimated. The forcings for individual ecoregions were similar in magnitude to current global forcing estimates, with the most negative forcing (as low as −0.367 Wm−2) due to ...


When Curiosity Kills More Than The Cat: The Perils Of Unchecked Scientific Inquiry, Jamie Shannon Dec 2010

When Curiosity Kills More Than The Cat: The Perils Of Unchecked Scientific Inquiry, Jamie Shannon

Pomona Senior Theses

This work analyzes the ecological, physical, emotional and health impacts of the US nuclear testing done in the Marshall Islands in the mid-20th century.


Proyecto De Investigación: La Primera Agencia Espacial Mexicana: La Comisión Nacional Del Espacio Exterior (1962-1977), J. R. Joel Flores-Mariscal Dec 2010

Proyecto De Investigación: La Primera Agencia Espacial Mexicana: La Comisión Nacional Del Espacio Exterior (1962-1977), J. R. Joel Flores-Mariscal

J. R. Joel Flores-Mariscal

No abstract provided.


Proyecto De Investigación: Los Mexicanos En Las Operaciones De La Segunda Guerra Mundial, J. R. Joel Flores-Mariscal Dec 2010

Proyecto De Investigación: Los Mexicanos En Las Operaciones De La Segunda Guerra Mundial, J. R. Joel Flores-Mariscal

J. R. Joel Flores-Mariscal

No abstract provided.


Spatial Semantics For Better Interoperability And Analysis: Challenges And Experiences In Building Semantically Rich Applications In Web 3.0, Amit P. Sheth Dec 2010

Spatial Semantics For Better Interoperability And Analysis: Challenges And Experiences In Building Semantically Rich Applications In Web 3.0, Amit P. Sheth

Kno.e.sis Publications

No abstract provided.


Information Technology And Productivity Growth: German Trends And Oecd Comparisons, Adam Saunders Dec 2010

Information Technology And Productivity Growth: German Trends And Oecd Comparisons, Adam Saunders

Operations, Information and Decisions Papers

No abstract provided.


The River Discontinuum: Applying Beaver Modifications To Baseline Conditions For Restoration Of Forested Headwaters, Denise Burchsted, Melinda Daniels, Robert Thorson, Jason Vokoun Dec 2010

The River Discontinuum: Applying Beaver Modifications To Baseline Conditions For Restoration Of Forested Headwaters, Denise Burchsted, Melinda Daniels, Robert Thorson, Jason Vokoun

Center for Integrative Geosciences

Billions of dollars are being spent in the United States to restore rivers to a desired, yet often unknown, reference condition. In lieu of a known reference, practitioners typically assume the paradigm of a connected watercourse. Geological and ecological processes, however, create patchy and discontinuous fluvial systems. One of these processes, dam building by North American beavers (Castor canadensis), generated discontinuities throughout precolonial river systems of northern North America. Under modern conditions, beaver dams create dynamic sequences of ponds and wet meadows among free-flowing segments. One beaver impoundment alone can exceed 1000 meters along the river, flood the valley laterally ...


Beyond Technology Readiness Levels For Software: U.S. Army Workshop Report, Stephen Blanchette Jr., Cecilia Albert, Suzanne Garcia-Miller Dec 2010

Beyond Technology Readiness Levels For Software: U.S. Army Workshop Report, Stephen Blanchette Jr., Cecilia Albert, Suzanne Garcia-Miller

Stephen Blanchette Jr.

No abstract provided.


Leaching Mechanism Of Semiconducting Minerals, Fathi Habashi Dec 2010

Leaching Mechanism Of Semiconducting Minerals, Fathi Habashi

Fathi Habashi

The mechanism of leaching of semiconducting minerals such as PbS, ZnS, UO2, etc., has been the subject of intensive speculation by hydrometallurgists in the early 1950s. The electrochemical mechanism proposed in 1970 by the author in volume 2 of his Principles of Extractive Metallurgy avoids the assumption of forming intermediate complexes that cannot be isolated or identified.


Human Decomposition Ecology At The University Of Tennessee Anthropology Research Facility, Franklin Edward Damann Dec 2010

Human Decomposition Ecology At The University Of Tennessee Anthropology Research Facility, Franklin Edward Damann

Doctoral Dissertations

The University of Tennessee Anthropology Research Facility (ARF) is well known for its unique history as a site of human decomposition research in a natural environment. It has been integral to our understanding of the processes of human decomposition. Over the last 30 years 1,089 bodies have decomposed at this 1.28 acre facility, producing a density of 850 corpses per acre of land. This project evaluated the abiotic and biotic characteristics of the soil exposed to various levels of human decomposition in order to determine the effect on the physicochemical properties and the indigenous bacterial communities.

Specifically, 75 ...


How Market Efficiency And The Theory Of Storage Link Corn And Ethanol Markets, Mindy L. Mallory, Dermot J. Hayes, Scott Alan Irwin Dec 2010

How Market Efficiency And The Theory Of Storage Link Corn And Ethanol Markets, Mindy L. Mallory, Dermot J. Hayes, Scott Alan Irwin

CARD Working Papers

In this article we use the theories of market efficiency and supply of storage to develop a conceptual link between the corn and ethanol markets and explore statistical evidence for the link. We propose that a long-run no-profit condition is established in distant futures markets for ethanol, corn, and natural gas and then use the theory of storage to define an inter-temporal equilibrium among these prices. The relationship shows that under certain conditions, future price expectations will influence current spot prices and that a short-term relationship between input and output prices will exist. This short-term relationship will contain fixed costs ...


Educators' Attitudes Toward Outdoor Classrooms And The Cognitive Benefits In Children, Carlie Speedlin Dec 2010

Educators' Attitudes Toward Outdoor Classrooms And The Cognitive Benefits In Children, Carlie Speedlin

Environmental Studies Undergraduate Student Theses

A case study was organized at a K-5 elementary school in Lincoln, Nebraksa. This school is Saratoga Elementary School and is a United States Title I Distinguished School1 under No Child Left Behind. It has a population of 266 students, with 47% being minority, 1% gifted, and 28% special education (LPS School Profile Brochure). 80% of the student population is eligible for free/reduced meals, implying that it’s a school with a lower socioeconomic status. At this school a garden space was constructed and an after school garden club was implemented for this case study. The club had been ...


Salmon For Terrestrial Protected Areas, Chris T. Darimont, Heather M. Bryan, Stephanie M. Carlson, Morgan D. Hocking, Misty Macduffee, Paul C. Paquet, Michael H. H. Price, Thomas E. Reimchen, John D. Reynolds, Christopher C. Wilmers Dec 2010

Salmon For Terrestrial Protected Areas, Chris T. Darimont, Heather M. Bryan, Stephanie M. Carlson, Morgan D. Hocking, Misty Macduffee, Paul C. Paquet, Michael H. H. Price, Thomas E. Reimchen, John D. Reynolds, Christopher C. Wilmers

Environment and Nature Conservation Collection

Although managers safeguard protected areas for migratory species, little consideration has been given to how migratory species might benefit parks. Additionally, whereas land‐sea connections are considered in management of protected areas, most effort has focused on reducing negative “downstream” processes. Here, we offer a proposal to promote positive “upstream” processes by safeguarding the seasonal pulse of marine nutrients imported into freshwater and riparian ecosystems by spawning migrations of Pacific salmon. Currently, high rates of fishing limit this important contribution to species and processes that terrestrial parks were designed to protect. Accordingly, we propose limiting exploitation in areas and periods ...


Technology Capacity Development Through Oss Implementation: The Case Of Public Higher Education Institutions In Ethiopia, Nigussie Tadesse Mengesha Dec 2010

Technology Capacity Development Through Oss Implementation: The Case Of Public Higher Education Institutions In Ethiopia, Nigussie Tadesse Mengesha

The African Journal of Information Systems

The Open Source Software (OSS) literature gives little attention to the study and practice of domain specific end-user OSS implementation in general and in the public sector of developing countries (DCs) in particular. This paper, however, investigates the trajectories of two OSS-based information systems (IS) implementation projects in a developing country (DC) context with the aim to uncover the practice-based learning and resource sharing evident among locally situated and globally dispersed developers and users. The result of the interpretative case study research shows that the OSS philosophy and practice of software development, implementation and ownership, facilitates for the emergence of ...


Does Socio/Economic Status Affect Environmental Awarness In Elementary School Children Interacting With School Gardens?, Grady C. Erickson Dec 2010

Does Socio/Economic Status Affect Environmental Awarness In Elementary School Children Interacting With School Gardens?, Grady C. Erickson

Environmental Studies Undergraduate Student Theses

This is a case study involving three elementary schools in the greater Lincoln, Nebraska area. These schools were chosen to provide insight to three different economic backgrounds. Saratoga and Randolph from Lincoln Public Schools, and Norris Elementary part of Norris Public Schools 160 was the third school involved in the study. This case study focused on seeing whether socio/economic background had any effect on environmental awareness. To do so, surveys were handed out to each school to help measure environmental awareness. These surveys also helped determine where the environmental literacy standards were in the elementary schools of Lincoln, Nebraska ...


How Are The Torres Strait Islander's Traditional Hunting Practices Affected By The Current Rate Of Decline In Dugong And Sea Turtle Populations And The Australian Government's Co-Management Policies On Marine Preservation?, Katilyn Price Dec 2010

How Are The Torres Strait Islander's Traditional Hunting Practices Affected By The Current Rate Of Decline In Dugong And Sea Turtle Populations And The Australian Government's Co-Management Policies On Marine Preservation?, Katilyn Price

Environmental Studies Undergraduate Student Theses

This paper will attempt to identify the extent to which the Torres Strait Islanders traditional hunting practices have been disrupted by the overall decline in dugong and sea turtle populations, which has directly correlated to an increase in hunting restrictions put in place by the Australian Government. The traditional hunting of dugongs and sea turtles provides not only a food source, but brings prestige to the men who catch them and serves as an educational platform to teach the younger generations about their culture. There are many environmental threats that impact the populations of sea turtles and dugongs though the ...


Recent Legislation To Promote Wind Energy In Nebraska, Ryan Lemke Dec 2010

Recent Legislation To Promote Wind Energy In Nebraska, Ryan Lemke

Environmental Studies Undergraduate Student Theses

Nebraska is currently ranked 4th in the nation for wind energy potential, but ranks low in actual wind power production. The lack of wind energy production could be the result of Nebraska’s unique public power districts that have eminent domain of distribution and retail sales of electricity in the State. Public Power districts are prohibited from receiving benefits of state and federal tax incentives for the development of wind farms, however some Nebraska power districts still pursue wind energy as a renewable source of energy.

Recent legislation changes, including the passing of laws LB629 and LB1048, have provided the ...