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2006

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Full-Text Articles in Physical Sciences and Mathematics

Escherichia Coli Loading At Or Near Base Flow In A Mixed-Use Watershed, Randall Gentry, John Mccarthy, Alice Layton, Larry Mckay, Dan Williams, Shesh Koirala, Gary Sayler Jun 2013

Escherichia Coli Loading At Or Near Base Flow In A Mixed-Use Watershed, Randall Gentry, John Mccarthy, Alice Layton, Larry Mckay, Dan Williams, Shesh Koirala, Gary Sayler

Gary S. Sayler

This study analyzed the occurrence of Escherichia coli in a mixed land-use watershed with human, cattle, and wildlife fecal inputs located in a karstic geologic region using synoptic monitoring (samples taken throughout the watershed system) during base-flow conditions. The objective of the study was to evaluate the occurrence of E. coli during base-flow conditions for several months at seven different main channel and nine different tributary sampling sites in the Stock Creek watershed, a 49.3-km2 basin located in Knoxville, TN. Escherichia coli densities were measured using the Colilert (Defined Substrate Technology) method. The instantaneous loads for E. coli were ...


Development Of Bacteroides 16s Rrna Gene Taqman-Based Real-Time Pcr Assays For Estimation Of Total, Human, And Bovine Fecal Pollution In Water, Alice Layton, Larry Mckay, Dan Williams, Victoria Garrett, Randall Gentry, Gary Sayler Jun 2013

Development Of Bacteroides 16s Rrna Gene Taqman-Based Real-Time Pcr Assays For Estimation Of Total, Human, And Bovine Fecal Pollution In Water, Alice Layton, Larry Mckay, Dan Williams, Victoria Garrett, Randall Gentry, Gary Sayler

Gary S. Sayler

Bacteroides species are promising indicators for differentiating livestock and human fecal contamination in water because of their high concentration in feces and potential host specificity. In this study, a real-time PCR assay was designed to target Bacteroides species (AllBac) present in human, cattle, and equine feces. Direct PCR amplification (without DNA extraction) using the AllBac assay was tested on feces diluted in water. Fecal concentrations and threshold cycle were linearly correlated, indicating that the AllBac assay can be used to estimate the total amount of fecal contamination in water. Real-time PCR assays were also designed for bovine-associated (BoBac) and human-associated ...


Efficacy Of Bacteroides Measurements For Reducing The Statistical Uncertainty Associated With Hydrologic Flow And Fecal Loads In A Mixed Use Watershed, Randall Gentry, Alice Layton, Larry Mckay, John Mccarthy, Dan Williams, Shesh Koirala, Gary Sayler Jun 2013

Efficacy Of Bacteroides Measurements For Reducing The Statistical Uncertainty Associated With Hydrologic Flow And Fecal Loads In A Mixed Use Watershed, Randall Gentry, Alice Layton, Larry Mckay, John Mccarthy, Dan Williams, Shesh Koirala, Gary Sayler

Gary S. Sayler

This paper presents an analysis of the occurrence and uncertainty of source-specific Bacteroides and Escherichia coli in a stream in a mixed land-use watershed with human, cattle, and wildlife fecal inputs located in a karstic geologic region during baseflow conditions. The objectives of the study were to evaluate the occurrence, hydrologic significance, and source of fecal mass in the stream using assays for total Bacteroides (AllBac) and bovine-specific Bacteroides (BoBac), and then to compare these measurements with E. coli densities and loads. Samples were collected during baseflow conditions over several months at seven different main channel sites in the Stock ...


Lend Me Your Arms: The Use And Implications Of Humancentric Rfid, Amelia Masters, Katina Michael Dec 2006

Lend Me Your Arms: The Use And Implications Of Humancentric Rfid, Amelia Masters, Katina Michael

Faculty of Informatics - Papers (Archive)

Recent developments in the area of RFID have seen the technology expand from its role in industrial and animal tagging applications, to being implantable in humans. With a gap in literature identified between current technological development and future humancentric possibility, little has been previously known about the nature of contemporary humancentric applications. By employing usability context analyses in control, convenience and care-related application areas, we begin to piece together a cohesive view of the current development state of humancentric RFID, as detached from predictive conjecture. This is supplemented by an understanding of the market-based, social and ethical concerns which plague ...


The Importance Of Scenarios In Evaluating The Socio-Ethical Implications Of Location-Based Services, L. Perusco, Katina Michael Dec 2006

The Importance Of Scenarios In Evaluating The Socio-Ethical Implications Of Location-Based Services, L. Perusco, Katina Michael

Faculty of Informatics - Papers (Archive)

Location-based services (LBS) are those applications that utilize the position of an end-user, animal or thing based on a given device (handheld, wearable, interwoven into fabric or implanted), executed for a particular purpose. LBS applications range from those that are mission-critical to those that are used for convenience, from those that are mandatory to those that are voluntary, from those that are targeted at the mass market to those that cater for the needs of a niche market. Location services can be implemented using a variety of access mediums including global positioning systems and radio-frequency identification, rendering approximate or precise ...


Homo Electricus And The Continued Speciation Of Humans, Katina Michael Dec 2006

Homo Electricus And The Continued Speciation Of Humans, Katina Michael

Faculty of Informatics - Papers (Archive)

Michael, K. (2007). Homo Electricus and the continued speciation of humans. In M. Quigley (Eds.), Encyclopaedia of Information Ethics and Security (pp. 312-318). United States of America: IGI Global. http://www.igi-global.com/chapter/homo-electricus-continued-speciation-humans/13490


Analysis Of Business Process Integration In Web Service Context, J. Shen, G. Grossmann, Y. Yang, M. Stumptner, M. Schrefl, T. Reiter Dec 2006

Analysis Of Business Process Integration In Web Service Context, J. Shen, G. Grossmann, Y. Yang, M. Stumptner, M. Schrefl, T. Reiter

Faculty of Informatics - Papers (Archive)

The integration of Web services is a recent outgrowth of the Business Process integration field that will require powerful meta-schema matching mechanisms supported by higher level abstractions, such as UML meta-models. Currently, there are many XML-based workflow process specification languages (e.g. XPDL, BPEL) which can be used to define business processes in the Web services and Grid Computing world. However, with limited capability to describe the relationships (schemas or ontologies) between process objects, the dominant use of XML as a meta-data markup language makes the semantics of the processes ambiguous. OWL-S (Ontology Web Language for Services) exploits the semantic ...


A P2p Based Service Flow System With Advanced Ontology-Based Service Profiles, J. Shen, Y. Yang, Jun Yan Dec 2006

A P2p Based Service Flow System With Advanced Ontology-Based Service Profiles, J. Shen, Y. Yang, Jun Yan

Faculty of Informatics - Papers (Archive)

A peer-to-peer (p2p) based service flow management system, SwinDeW-S, could support decentralised Web service composition, deployment and enactment. However, traditional workflow definition languages, such as extended XPDL and service-oriented BPEL4WS, have become insufficient to specify business process semantics, especially the descriptions of inputs, outputs, preconditions and effects. In this paper, we propose a novel solution based on OWL-S, a semantic Web ontology language that leverages service discovery, invocation and negotiation more effectively. The enhanced SwinDeW-S architecture is adapted with advanced ontology-based service profiles, and it takes advantage of a well-developed profile generation tool, which translates the BPEL4WS process models to ...


Knowledge Sharing And Organizational Change In A Leading Telecommunications Equipment Vendor: A Case Study On Southern Networks, Katina Michael Dec 2006

Knowledge Sharing And Organizational Change In A Leading Telecommunications Equipment Vendor: A Case Study On Southern Networks, Katina Michael

Faculty of Informatics - Papers (Archive)

In 1999 Southern Networks deployed the Open Text Livelink knowledge management system (KMS). Livelink allowed for the centralization of key corporate applications and associated content at a global, regional, line-of-business, departmental and personal level. Prior to the implementation of Livelink on an enterprise scale, the corporation’s 94,500 employees relied on fragmented departmental web pages which were scattered across eleven different Web servers making the task of finding information very difficult. This paper describes how the process of knowledge transfer at Southern Networks changed with the deployment of Livelink and how it enabled the automation of workflows through the ...


Afci Quarterly Input: Unlv October 1 Through December 31, 2006, Harry Reid Center For Environmental Studies. Nuclear Science And Technology Division Dec 2006

Afci Quarterly Input: Unlv October 1 Through December 31, 2006, Harry Reid Center For Environmental Studies. Nuclear Science And Technology Division

Transmutation Research Program Reports (TRP)

Quarterly report highlighting research projects, activities and objectives of the Transmutation Research Program at the Nuclear Science & Technology Division, Harry Reid Research Center.

The University of Nevada, Las Vegas supports the AFCI through research and development of technologies for economic and environmentally sound refinement of spent nuclear fuel. The UNLV program has four components: infrastructure, international collaboration, student-based research, and management and program support.


Interagency Science And Research: Quarterly Progress Report, Period Ending December 31, 2006, Margaret N. Rees Dec 2006

Interagency Science And Research: Quarterly Progress Report, Period Ending December 31, 2006, Margaret N. Rees

Interagency Science and Research Strategy

  • Completed draft review and analysis of 6 interagency and 2 single-agency science strategies.
  • Developed an outline for a Southern Nevada Agency Partnership Science Strategy based upon these reviews.
  • Initiated a beta-test of a science proposal review process.


Lake Mead National Recreation Area Vegetation Monitoring And Management: Quarterly Progress Report, Period Ending December 31, 2006, Margaret N. Rees Dec 2006

Lake Mead National Recreation Area Vegetation Monitoring And Management: Quarterly Progress Report, Period Ending December 31, 2006, Margaret N. Rees

Vegetation Monitoring

Executive Summary

  • Two new Weed Sentry research assistants were hired.
  • Weed Sentry staff surveyed for exotic species on 89 miles of roads on NPS and BLM land and treated more than 21,000 exotic plants in incipient populations.
  • A grid-based rare plant monitoring method was tested this quarter.
  • A manuscript detailing vegetation succession on a water pipeline at Lake Mead NRA was submitted for review to the journal Crossosoma.
  • New integrative projects undertaken this quarter included establishing a competition study between a native grass and the exotic Sahara mustard, salvaging plants for research purposes from private sites with permission from ...


Lake Mead National Recreation Area Sensitive Wildlife Species Monitoring And Analysis: Quarterly Progress Report, Period Ending December 31, 2006, Margaret N. Rees Dec 2006

Lake Mead National Recreation Area Sensitive Wildlife Species Monitoring And Analysis: Quarterly Progress Report, Period Ending December 31, 2006, Margaret N. Rees

Wildlife Monitoring

  • Research assistant hired for Relict Leopard Frog conservation project.
  • High school minority intern hired to assist with research efforts.
  • Nocturnal visual encounter surveys for Relict Leopard Frogs conducted at all established natural sites and at 6 of 7 translocation sites.
  • Vegetation management conducted to decrease tamarisk cover along the stream at the Pupfish Refuge Spring – a Relict Leopard Frog translocation site.
  • New draft guidelines and field count protocols developed for midwinter bald eagle count.
  • Preliminary analysis and modeling of thrasher habitat selection conducted and sampling assessed
  • Call-broadcast surveys for thrasher species conducted at 43 points countywide, focusing on vegetation assemblages ...


Take Pride In America In Southern Nevada: Quarterly Progress Report, Period Ending December 31, 2006, Margaret N. Rees Dec 2006

Take Pride In America In Southern Nevada: Quarterly Progress Report, Period Ending December 31, 2006, Margaret N. Rees

Anti-littering Programs

• Don’t Trash Nevada roll-out event held on October 12, 2006.

• Program website launched.

• 74 people have taken the on-line anti-litter and dumping pledge.

• Public-private partnership with Republic Services of Southern Nevada generated $11,917.97 in donations to Don’t Trash Nevada.

• Conducted 3 volunteer and 1 alternative workforce clean-ups this quarter.

• Fulfilled deliverable of 12 clean-ups for 2006 (9 volunteer / 3 alternative workforce).

• 16 volunteer clean-ups scheduled for 2007. • Two tons of agency-generated paper recycled this quarter, saving 14,000 gallons of water, 34 trees, and almost 8 cubic yards of landfill space.

• Phase I judicial analysis draft ...


Cooperative Conservation: Increasing Capacity Through Community Partnerships -- Interagency Volunteer Program: Quarterly Progress Report, Period Ending December 31, 2006, Margaret N. Rees Dec 2006

Cooperative Conservation: Increasing Capacity Through Community Partnerships -- Interagency Volunteer Program: Quarterly Progress Report, Period Ending December 31, 2006, Margaret N. Rees

Get Outdoors Nevada

  • Volunteer database increased 8% over last quarter. Database now contains 2,923 records.
  • Website activity increased, recording an average of 51,568 hits per month, with an average of 4,985 pages viewed per month (12.4% increase in pages viewed).
  • Team charter approved and signed by federal managers and IVP team.
  • Volunteer orientation and training in 11 subject areas delivered to 80 volunteers.
  • Recognition Banquet and Awards Ceremony recognized 180 volunteers.
  • Volunteer event list revised for 2007.


Oliver Ranch Science School Complex & Wild Horse And Burro Facility: Final Close-Out Report, Margaret N. Rees Dec 2006

Oliver Ranch Science School Complex & Wild Horse And Burro Facility: Final Close-Out Report, Margaret N. Rees

Oliver Ranch Project

“The mission of the Red Rock Desert Learning Center is to instill stewardship and respect by increasing knowledge and understanding of the Mojave Desert ecosystems and cultures through a unique experiential discovery program.”


Front Matter Dec 2006

Front Matter

Journal of Digital Forensics, Security and Law

No abstract provided.


Back Matter Dec 2006

Back Matter

Journal of Digital Forensics, Security and Law

No abstract provided.


Correction To Koen's Critical Values In Testing Spatial Randomness, Sung Nok Chiu Dec 2006

Correction To Koen's Critical Values In Testing Spatial Randomness, Sung Nok Chiu

HKBU Staff Publication

Using Ripley's K-function in testing spatial randomness, Koen's estimated critical values deviated notably from Ripley's approximation formula; the former, however, came from an incorrect algorithm. This paper reports new estimates, which agree very well with Ripley's approximation and recommends that the approximation formula can be used instead of Monte-Carlo tests.


Masthead Dec 2006

Masthead

Journal of Digital Forensics, Security and Law

No abstract provided.


Scaling Tests Of The Cross Section For Deeply Virtual Compton Scattering, C. Muñoz Camacho, Timothy Holmstrom, Jefferson Lab Hall A Collaboration Dec 2006

Scaling Tests Of The Cross Section For Deeply Virtual Compton Scattering, C. Muñoz Camacho, Timothy Holmstrom, Jefferson Lab Hall A Collaboration

Chemistry and Physics Faculty Publications

We present the first measurements of the e⃗p→epγ cross section in the deeply virtual Compton scattering (DVCS) regime and the valence quark region. The Q2 dependence (from 1.5 to 2.3  GeV2) of the helicity-dependent cross section indicates the twist-2 dominance of DVCS, proving that generalized parton distributions (GPDs) are accessible to experiment at moderate Q2. The helicity-independent cross section is also measured at Q2=2.3  GeV2. We present the first model-independent measurement of linear combinations of GPDs and GPD integrals up to the twist-3 approximation.


The Unbalanced Classification Problem: Detecting Breaches In Security, Paul Evangelista Dec 2006

The Unbalanced Classification Problem: Detecting Breaches In Security, Paul Evangelista

West Point ETD

This research proposes several methods designed to improve solutions for security classification problems. The security classification problem involves unbalanced, high-dimensional, binary classification problems that are prevalent today. The imbalance within this data involves a significant majority of the negative class and a minority positive class. Any system that needs protection from malicious activity, intruders, theft, or other types of breaches in security must address this problem. These breaches in security are considered instances of the positive class. Given numerical data that represent observations or instances which require classification, state of the art machine learning algorithms can be applied. However, the ...


A New View Of Ridge Segmentation And Near-Axis Volcanism At The East Pacific Rise, 8˚–12˚N, From Em300 Multibeam Bathymetry, Scott M. White, Rachel M. Haymon, S M. Carbotte Dec 2006

A New View Of Ridge Segmentation And Near-Axis Volcanism At The East Pacific Rise, 8˚–12˚N, From Em300 Multibeam Bathymetry, Scott M. White, Rachel M. Haymon, S M. Carbotte

Faculty Publications

New, high-resolution bathymetry for the East Pacific Rise between 8˚N and 12˚N was collected over a6 km wide swath centered on the ridge axis using the 30 kHz Simrad EM300 multibeam system. Thecoverage area corresponds latitudinally to the designated Ridge2000 Integrated Studies Site (ISS) for fastspreading ridges. The EM300 data, gridded at 30 m latitude by 50 m longitude, represent a greater than 4Ximprovement in horizontal resolution over previously available multibeam data and a 2X improvement indepth resolution. The new bathymetry was used to update the locations and hierarchy of ridge offsets forthis area. Among the many applications ...


Factors Contributing To Dust Emissions In Clark County, Nevada Annual Performance Report: Period Ending December 29, 2006, Margaret N. Rees Dec 2006

Factors Contributing To Dust Emissions In Clark County, Nevada Annual Performance Report: Period Ending December 29, 2006, Margaret N. Rees

Dust Emissions from Public Lands

  1. A comparison of actual accomplishments with the goals and objectives established for the period, the findings of the investigator, or both. Whenever appropriate and the output of programs and projects can be readily quantified, such quantitative data should be related to cost data for computation of unit costs.
  • University of Nevada, Public Lands Institute has met the requirement of section III.A.1 of Task Agreement FAA010017 to recruit and hire a postdoctoral scholar (or equivalent position) with research expertise in dust management issues. Dr. Dirk Goossens has extensive and specific experience in dust emissions research and will begin work ...


Itr/Im: Enabling The Creation And Use Of Geogrids For Next Generation Geospatial Information, Peggy Agouris, Mary-Kate Beard-Tisdale, Chaitanya Baru, Sarah Nusser Dec 2006

Itr/Im: Enabling The Creation And Use Of Geogrids For Next Generation Geospatial Information, Peggy Agouris, Mary-Kate Beard-Tisdale, Chaitanya Baru, Sarah Nusser

University of Maine Office of Research Administration: Grant Reports

The objective of this project is to advance science in information management, focusing in particular on geospatial information. It addresses the development of concepts, algorithms, and system architectures to enable users on a grid to query, analyze, and contribute to multivariate, quality-aware geospatial information. The approach consists of three complementary research areas: (1) establishing a statistical framework for assessing geospatial data quality; (2) developing uncertainty-based query processing capabilities; and (3) supporting the development of space- and accuracy-aware adaptive systems for geospatial datasets. The results of this project will support the extension of the concept of the computational grid to facilitate ...


Information And Data Management Program's Pi Workshop, Peggy Agouris Dec 2006

Information And Data Management Program's Pi Workshop, Peggy Agouris

University of Maine Office of Research Administration: Grant Reports

The objective of this workshop is to bring together the PIs and Co-PIs currently funded by the Information and Data Management Program of the National Science Foundation to discuss and exchange ideas on the focus topics of their field, as well as to identify and elaborate on emerging themes and particular emphases for future activities.

More specifically, the researchers, along with selected industry and government invitees, cooperatively focused on:

(1) analyzing research and development issues fundamental in making progress towards new challenges imposed by such diverse data sources as the Internet, embedded and distributed sensors, and satellites;

(2) specifying areas ...


Information And Data Management Program's Pi Workshop, Peggy Agouris Dec 2006

Information And Data Management Program's Pi Workshop, Peggy Agouris

University of Maine Office of Research Administration: Grant Reports

The objective of this workshop is to bring together the PIs and Co-PIs currently funded by the Information and Data Management Program of the National Science Foundation to discuss and exchange ideas on the focus topics of their field, as well as to identify and elaborate on emerging themes and particular emphases for future activities.

More specifically, the researchers, along with selected industry and government invitees, cooperatively focused on:

(1) analyzing research and development issues fundamental in making progress towards new challenges imposed by such diverse data sources as the Internet, embedded and distributed sensors, and satellites;

(2) specifying areas ...


Synthesis And Characterization Of Hydrated Rubidium Thio-Hydroxosilicogermanates Using Mechanochemical Hydrothermal Synthesis, Carly R. Nelson, Sarah Olson, Steven A. Poling, Steve W. Martin Dec 2006

Synthesis And Characterization Of Hydrated Rubidium Thio-Hydroxosilicogermanates Using Mechanochemical Hydrothermal Synthesis, Carly R. Nelson, Sarah Olson, Steven A. Poling, Steve W. Martin

Materials Science and Engineering Publications

The synthesis, structure, and proton conductivity of the hydrated thio-hydroxosilicogermanates RbzGexSi1-xSz(OH)4-z·yH2O (2 ≤ z ≤ 3; 0 < y < 1.7) are reported. X-ray diffraction indicates that the z = 2 materials are amorphous and show no unreacted starting materials, which is consistent with the mechanochemical hydrothermal evaporation−precipitation synthesis method. Infrared spectroscopy shows a fully reacted system where both silicon and germanium central anions have vibrational modes at 950, 780, 667, and 450 cm-1 associated with asymmetric modes for Si−O, Ge−O, Si−S, and Ge−S chemical bonds, respectively. O−H stretching and bending modes are present at ...


Behavioral Subtyping Is Equivalent To Modular Reasoning For Object-Oriented Programs, Gary T. Leavens, David A. Naumann Dec 2006

Behavioral Subtyping Is Equivalent To Modular Reasoning For Object-Oriented Programs, Gary T. Leavens, David A. Naumann

Computer Science Technical Reports

Behavioral subtyping is an established idea that enables modular reasoning about behavioral properties of object-oriented programs. It requires that syntactic subtypes are behavioral refinements. It validates reasoning about a dynamically-dispatched method call, say E.m(), using the specification associated with the static type of the receiver expression E. For languages with references and mutable objects the idea of behavioral subtyping has not been rigorously formalized as such and the standard informal notion has inadequacies. This paper formalizes behavioral subtyping and introduces a new formalization of modular reasoning, called supertype abstraction. A Java-like sequential language is considered, with classes and interfaces ...


Modeling The Incubation Period Of Anthrax, Ron Brookmeyer, Elizabeth Johnson, Sarah Barry Dec 2006

Modeling The Incubation Period Of Anthrax, Ron Brookmeyer, Elizabeth Johnson, Sarah Barry

Ron Brookmeyer

Models of the incubation period of anthrax are important to public health planners because they can be used to predict the delay before outbreaks are detected, the size of an outbreak and the duration of time that persons should remain on antibiotics to prevent disease. The difficulty is that there is little direct data about the incubation period in humans. The objective of this paper is to develop and apply models for the incubation period of anthrax. Mechanistic models that account for the biology of spore clearance and germination are developed based on a competing risks formulation. The models predict ...