Digital Commons Network^™

Ethics In A Global Biopharmaceutical Environment, Michael J. Malinowski

Journal Articles

No abstract provided.

Probabilistic Road Map Sampling Strategies For Multi-Robot Motion Planning, Christopher M. Clark

Computer Science and Software Engineering

This paper presents a Probabilistic Road Map (PRM) motion planning algorithm to be queried within Dynamic Robot Networks—a multi-robot coordination platform for robots operating with limited sensing and inter-robot communication. First, the Dynamic Robot Networks (DRN) coordination platform is introduced that facilitates centralized robot coordination across ad hoc networks, allowing safe navigation in dynamic, unknown environments. As robots move about their environment, they dynamically form communication networks. Within these networks, robots can share local sensing information and coordinate the actions of all robots in the network. Second, a fast single-query Probabilistic Road Map (PRM) to be called within the DRN …

Lake Mead National Recreation Area Vegetation Monitoring And Management: Quarterly Progress Report, Period Ending December 31, 2005, Margaret N. Rees

Vegetation Monitoring

Executive Summary

• Required reports on sticky buckwheat (Eriogonum viscidulum) and threecorner milkvetch (Astragalus geyeri var. triquetrus) to be submitted through appropriate protocols by December 30, 2005
• Summary report on several other rare plants to be submitted through appropriate protocols by December 30, 2005
• Invasive perennial pepperweed (also called tall whitetop; Lepidium latifolium) documented and treated by Weed Sentry within Black Canyon, Lake Mojave

An Algebraic Reconstruction Technique (Art) For The Synthesis Of Three-Dimensional Models Of Particle Aggregates From Projective Representations, Daniel Jonathan Randall-Barrot

Theses and Dissertations

There exists considerable evidence that the shear behavior and flow behavior of granular materials is significantly dependent on particle morphology. However, quantification of this dependence is a challenging task owing to a dearth of quantitative models for describing particle shape and the difficulty of modeling angular particle assemblies. The situation becomes more complex when discrete element analyses of realistic 3-D particle shapes are required. The thesis attempts to address this problem by adapting the algebraic reconstruction technique (ART) to synthesize composite 3-D granular particles from statistically obtained 3-D shape descriptors of the particles in an aggregate mixture. This thesis extends …

Lake Mead National Recreation Area Sensitive Wildlife Species Monitoring And Analysis: Quarterly Progress Report, Period Ending December 31, 2005, Margaret N. Rees

Wildlife Monitoring

• Topsoil replacement monitored at Willow Beach Wastewater Rehabilitation Project
• Desert tortoise surveys and monitoring conducted for Northshore Road reconstruction projects, and desert tortoise training provided to 9 construction contractors.
• Field work associated with the project to remove desert tortoise radio transmitters from animals on Mormon Mesa completed.
• Weekly data processing for Desert Bighorn Sheep monitoring associated with the Hoover Dam Bypass Project continued.
• Fall field surveys for relict leopard frogs completed (11 sites surveyed); last of this year’s head-started animals released; RLFCT meeting held.
• Work started on a digital database (GIS) of Peregrine falcon observations.
• Monthly shorebird surveys conducted (22 …

Cooperative Conservation: Increasing Capacity Through Community Partnerships -- Interagency Volunteer Program & Cooperative Conservation Program: Quarterly Progress Report, Period Ending December 31, 2005, Margaret N. Rees

Get Outdoors Nevada

• Database now contains 1,807 records, a 15% increase over the last quarter.
• Website activity increased, recording an average of 38,399 hits per month, with an average of 3,537 pages viewed per month.
• Inaugural interagency volunteer recognition event held October 28, 2005.
• Interagency training program (phase 1) scheduled for February 2006 (four sessions).
• Alternative Workforce Survey completed and delivered to National Park Service.

Take Pride In America In Southern Nevada: Quarterly Progress Report, Period Ending December 31, 2005, Margaret N. Rees

Anti-littering Programs

• Messaging campaign proposal approved by the federal Land Managers.
• Invitations sent to potential Community Steering Committee members.
• Project Manager Doug Joslin appointed to new county-wide Southern Nevada Recycling Advisory Committee.
• Four public service announcements produced by UNLV students.
• Contract with the Nevada Division of Forestry (NDF) in progress for prison crew site clean-ups.
• Plan for agency requests for additional dumpsters and/or roll-offs approved by team.

Afci Quarterly Input – Unlv October 1 Through December 31, 2005, 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.

Intelligent Resource Discovery Using Ontology-Based Resource Profiles, J. Steven Hughes, Dan Crichton, Sean Kelly, Chris A. Mattmann, Jerry Crichton, Thuy Tran

Copyright, Fair Use, Scholarly Communication, etc.

Successful resource discovery across heterogeneous repositories is highly dependent on the semantic and syntactic homogeneity of the associated resource descriptions in each repository. Ideally, consistent resource descriptions are easily extracted from each repository, expressed using standard syntactic and semantic structures, and managed and accessed within a distributed, flexible, and scalable software framework. In practice however, seldom do all three of these elements exist. To help address this situation, the Object Oriented Data Technology (OODT) project at the Jet Propulsion Laboratory has developed an extensible, standards-based resource description scheme that provides the necessary description and management facilities for the discovery of …

Role And Importance Of The Simulator Instructor, Asghar Ali

World Maritime University Dissertations

No abstract provided.

The Application Of Cba In Fsa, Maoxuan. Zheng

World Maritime University Dissertations

No abstract provided.

Use Of Hot Air Engine To Generate Electricity From Biogas: A Critique For Rural Development In Tanzania, L. L. N. Mkiramweni, P. Msaki, I. B. Mshoro

Tanzania Journal of Science

Rural electrification has high national priority because of several reasons. First, more than 90 per cent of the populations in Tanzania have no access to grid electricity and about 80% of this population lives in rural areas. Second, the poverty alleviation projects demand the incorporation of use of electricity in different economic projects. Third, a combination of high prices of fuel and environmental degradation and deforestation demand use of alternative renewable energy sources. The aim of this paper is to give a critical review and selected a suitable renewable energy by considering its ability to provide affordable, reliable and adequate …

The Analysis Of Core Competence For Chinese Oil Shipping Company, Binmeng. Mo

World Maritime University Dissertations

During the past decade, China’s crude oil import has risen sharply, which demands the immediately matching shipping capacity of the domestic oil shipping companies. Therefore, how to steer the Chinese oil shipping enterprises towards a promising development is a very big problem facing the Chinese entrepreneurs. This paper has tried to provide some practical suggestion to improve Chinese oil shipping companies’ core competence based on the analysis of Chinese Shipping Tanker Company, which is typical representative for this industry. After having studied the measuring methods of the core competence and the index system building principles, the author constructs a complete …

Analysis Of The Feasibility Of Building Virtual Corporations In The Shipping Industry, Shengxiao Di

World Maritime University Dissertations

No abstract provided.

The Analysis Of Large Chinese Liner Companies' Strategy To Develop Logistics Services, Biyun. Wang

World Maritime University Dissertations

No abstract provided.

Study On The Marketing Strategy Of Tianjin Port Logistics Center, Huang. Aigang

World Maritime University Dissertations

No abstract provided.

Analysis Of China's Import Iron Ore Shipping Market, Yan Pu

World Maritime University Dissertations

No abstract provided.

Comparative Analysis Of Lianyungang Port's Competitiveness Based On Calculation Of Principal Component Analysis, Yongle Sang

World Maritime University Dissertations

No abstract provided.

The Study On Container Shipping Line Business Of Dalian Port, Fan Zhang

World Maritime University Dissertations

No abstract provided.

Research On The Development Of Fleet For Carrying Imported Crude Oil In China, Tao Shen

World Maritime University Dissertations

No abstract provided.

Study Of Six Sigma Management Applied To Chinese Shipping Companies, Yang Xiaodan

World Maritime University Dissertations

No abstract provided.

Petrography And Mineral Chemistry Of The Pelitic And Semi-Pelitic Gneisses Of The Merelani Tanzanite Mining Area, Northeastern Tanzania, E. P. Malisa

Tanzania Journal of Science

Sillimanite/kyanite + K-feldspar + quartz ± garnet + biotite ± Fe-Ti oxide-bearing rocks occur associated with calc-silicate rocks in the Merelani tanzanite mining area north-eastern Tanzania. The whole rock chemistry shows varying rock oxidation ratios, which are reflected in the mineralogical assemblages. Almandine garnet is oxidized to mixtures of hematite, quartz, and hydrous aluminosilicates in oxidized rocks and is absent in highly oxidized rocks. In the latter, ilmenite is oxidized into mixtures of rutile and hematite. Such relatively high temperature alteration/oxidation effects could have occurred with the influx of water. Absence of staurolite in these aluminium-rich rocks is indicative of …

Phosphorus Sorption In Relation To Soil Grain Size And Geochemical Composition In The Simiyu And Kagera River Basins, Tanzania, R. A. Tamatamah

Tanzania Journal of Science

The phosphorus sorption characteristics of eight surface soil samples representative of the land use and landscape in the Simiyu and Kagera River basins were determined using the Langmuir equation. The Langmuir P adsorption maximum (Cmax) ranged from 109 to 802 mg kg-1, while Langmuir coefficient (K) ranged from 59 to 736 mg L-1. Cmax and were positively correlated to clay content, aluminium (Al), and iron (Fe) and negatively correlated to calcium (Ca). By using stepwise regression, the combination of Al, Fe, clay and Ca predicted more than 94% of the variation in the P sorption capacity of soils samples from …

Performance Of A Sisal Fibre Fixed-Bed Anaerobic Digester For Biogas Production From Sisal Pulp Waste, A. Mshandete, A. K. Kivaisi, M. S. T. Rubindamayugi, L. Björnsson, B. Mattiasson

Tanzania Journal of Science

A single stage anaerobic digester employing a sisal fibre waste fixed bed was studied for biogas production from sisal pulp waste. The fibre was colonized by microorganisms involved in biogas production. The sisal pulp waste to be digested was fed from the top and was sprinkled intermittently with recirculating leachate from the material. Organic loading rates of 0.1-10 kg volatile solids (VS) m-3d-1 could be applied and methane yields in the range of 0.13-0.48 m3 CH4 kg-1 VS added were obtained. The average methane content in the biogas produced from sisal pulp waste was 55%, and the biogas production rate …

The Influence Of Quantization Process On The Performance Of Global Entropic Thresholding Algorithms Using Electrical Capacitance Tomography Data, A. J. Mwambela

Tanzania Journal of Science

In measuring component fraction in multiphase flows using tomographic techniques, it is desirable to use a high speed tomography system capable of generating 100 tomograms per second. The electrical capacitance tomography system in this regard is considered to be the best among the available tomographic techniques. However, due to its inherent limitations the system generates distorted reconstructed tomograms necessitating the use of extra signal processing techniques such as thresholding to minimize these distortions. Whilst thresholding technique has been effective in minimizing distortions, the additional computation associated with the process limits the speed of tomogram generation desired from the system. Further, …

Distribution Of Hourly Variability Index Of Sky Clearness, A. Madhlopa

Tanzania Journal of Science

Clouds affect the values of insolation for solar technology and other applications. To detect the presence of variability in the sky clearness, an hourly variability index (p3) is calculated. The present study examined the frequency distribution of this variable as a tool for assessing the utilizability of solar radiation at a site. Solar radiation data from Chileka weather station in Malawi was used to calculate p3 and mean monthly variability index (p3m) and determine the probability model for each month. It was found that p3m was highest in April (0.20) and lowest in September (0.10), with the beta probability model …

Semiparametric Approaches For Joint Modeling Of Longitudinal And Survival Data With Time Varying Coefficients, Xiao Song, C.Y. Wang

UW Biostatistics Working Paper Series

We study joint modeling of survival and longitudinal data. There are two regression models of interest. The primary model is for survival outcomes, which are assumed to follow a time varying coefficient proportional hazards model. The second model is for longitudinal data, which are assumed to follow a random effects model. Based on the trajectory of a subject's longitudinal data, some covariates in the survival model are functions of the unobserved random effects. Estimated random effects are generally different from the unobserved random effects and hence this leads to covariate measurement error. To deal with covariate measurement error, we propose …

Almost Split Morphisms, Preprojective Algebras And Multiplication Maps Of Maximal Rank, Steven P. Diaz, Mark Kleiner

Mathematics - All Scholarship

With a grading previously introduced by the second-named author, the multiplication maps in the preprojective algebra satisfy a maximal rank property that is similar to the maximal rank property proven by Hochster and Laksov for the multiplication maps in the commutative polynomial ring. The result follows from a more general theorem about the maximal rank property of a minimal almost split morphism, which also yields a quadratic inequality for the dimensions of indecomposable modules involved.

Interview With Dr. Gary Yia Lee, Paul Hillmer

Hmong Oral History Project

Dr. Gary Yia Lee, distinguished anthropologist and scholar, traveled from his home in Sydney, Australia to California for a funeral, then made a stop to visit family in the Twin Cities. Tou Thao, his nephew, is an alumnus of Concordia University and a founder of the Hmong Oral History Project. He prevailed on his kind uncle, despite jet lag, the exhausting effects of a three-day funeral, and many, many demands on his time (including a presentation at Concordia University on 29 December), to sit down with me. I owe many thanks-and apologies-to Dr. Lee, his wife Maylee Lee, and the …

The Mechanism Of Membrane Targeting Of Human Sphingosine Kinase 1, Robert V. Stahelin, Jeong H. Hwang, Jin-Hahn Kim, Zee-Yong Park, Korey R. Johnson, Lina M. Obeid, Wonhwa Cho

Faculty Publications & Research

Sphingosine 1-phosphate is a bioactive sphingolipid that regu- lates cell growth and suppresses programmed cell death. The bio- synthesis of sphingosine 1-phosphate is catalyzed by sphingosine kinase (SK) but the mechanism by which the subcellular localization and activity of SK is regulated in response to various stimuli is not fully understood. To elucidate the origin and structural determi- nant of the specific subcellular localization of SK, we performed biophysical and cell studies of human SK1 (hSK1) and selected mutants. In vitro measurements showed that hSK1 selectively bound phosphatidylserine over other anionic phospholipids and strongly preferred the plasma membrane-mimicking membrane to …