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Articles 1531 - 1560 of 3640

Full-Text Articles in Physical Sciences and Mathematics

Buffering Pv Output During Cloud Transients With Energy Storage, Yacouba Moumouni Apr 2012

Buffering Pv Output During Cloud Transients With Energy Storage, Yacouba Moumouni

College of Engineering: Graduate Celebration Programs

The Problem

• Photovoltaic output power can be affected by many factors including clouds passing overhead.

• Utilities in generally prefer a guaranteed power delivery level over some specified power delivery period.

• Power delivered during peak demand hours is generally more valued by utilities. For the Desert Southwest this is in the summertime afternoons. For the local area this will be defined as 1-5 pm for the three summer months.

• While battery power can be adapted to this problem, large batteries to be expensive.


Solar Cell Design Using Metamaterials, Yang Liu, Yitung Chen, Jichun Li Apr 2012

Solar Cell Design Using Metamaterials, Yang Liu, Yitung Chen, Jichun Li

College of Engineering: Graduate Celebration Programs

Natural structure with simultaneous negative permittivity and permeability has not been discovered yet. However, using specially-designed metal embedded in dielectric bodies can achieve a kind of artificial negative index. This periodic structure which is smaller than the guided wavelength is known as a metamaterial. However, recent designs of metamaterials have some disadvantages when they are used in the application of solar cell. The perfect absorption is only within a narrow band, and for most of the solar spectrum, the absorption is no more than 10%. Here, a new kind of absorber for the solar spectrum has been designed and analyzed, …


Traffic Counter Mobile Application, Victor Molano Apr 2012

Traffic Counter Mobile Application, Victor Molano

College of Engineering: Graduate Celebration Programs

INTRODUCTION

Manual Counters:

•The vehicles counts and characteristics at signalized intersections and others transportation facilities are usually made using manual counters. These manual counters are mechanical or digital boards in which the user can record the different observations from the field. The use of these devices is usually required when more sophisticated methods are not available, when expensive equipment is not justified and for scholastic practices.


Node Filtering And Face Routing For Sensor Network, Umang Amatya Apr 2012

Node Filtering And Face Routing For Sensor Network, Umang Amatya

College of Engineering: Graduate Celebration Programs

Main Contributions

•Efficient Algorithms for identifying Redundant Sensor Nodes

•New Technique for Filtering Redundant Nodes in Sensor Network

•Reliable Algorithm for Message Routing - Forwarding

•User Friendly Prototype Implementation in Java

•Results of Experimental Investigation


Architecture For An Interactive Motion-Based Traffic Simulation Environment, Romesh Khaddar, Naveen Veeramisti, Alexander Paz, Pushkin Kachroo Apr 2012

Architecture For An Interactive Motion-Based Traffic Simulation Environment, Romesh Khaddar, Naveen Veeramisti, Alexander Paz, Pushkin Kachroo

College of Engineering: Graduate Celebration Programs

In simple words, the objective of this research is to identify the effect of human behavior on traffic To enhance the traffic simulation modeling realism by involving actual human beings navigating the system along with simulated entities in an immersive environment


Real-Time Face Detection And Recognition, Parker Hill, Brendan Morris Apr 2012

Real-Time Face Detection And Recognition, Parker Hill, Brendan Morris

College of Engineering: Graduate Celebration Programs

The face has become a popular biometric for identification due to the wide range of features and difficulty in manipulation of the metric. In order to work towards a robust facial recognition system, this work contains a foundation for using the face as a recognition metric. First, faces are detected from still images using a Viola-Jones object detection algorithm. Then, Eigenfaces is applied to the detected faces. The system was tested on face databases as well as real-time feed from a web camera.


Modeling Passive Solar Distillation In Las Vegas, Nv, Noe I. Santos Apr 2012

Modeling Passive Solar Distillation In Las Vegas, Nv, Noe I. Santos

College of Engineering: Graduate Celebration Programs

Project Background

• Many rural areas on the planet do not have easy access to clean water!

• Water distillation basins are capable of distilling water by using incident solar radiation to evaporate polluted water.

• Current thermodynamic models used to predict behavior require instantaneous data; requires the use of expensive equipment.

• Distillation basins are dependent on multiple meteorological variables: insolation, temperature, wind speed, cloud cover.

• Non‐linear behavior is difficult to predict for long term operations.


Framework Developmant For Construction Safety Visialization, Kishor Shrestha Apr 2012

Framework Developmant For Construction Safety Visialization, Kishor Shrestha

College of Engineering: Graduate Celebration Programs

Throughout the history of the construction industry, many fatalities and injuries have occurred in construction sites. One of the major causes of accidents is unsafe site conditions: basically, this is due to inadequate supervision. To improve upon the traditional supervision approach, this study proposes a 'Framework Development for Construction Safety Visualization' approach. In addition to this, a computer vision Edge Detection Algorithm was developed and tested to convert construction site still images into edges of the objects in the images. The framework development of this study uses computer vision, robot vision, image compression, pattern recognition, internet transmission, network communication, and …


Impact Of Sludge Treatment Processes On Estrogen Concentration In Wastewater Sludge, Erica Marti Apr 2012

Impact Of Sludge Treatment Processes On Estrogen Concentration In Wastewater Sludge, Erica Marti

College of Engineering: Graduate Celebration Programs

Endocrine-disrupting compounds (EDCs), such as estrogen, are known to be present in the aquatic environment at concentrations that affect fish and other wildlife. For example, juvenile male fish exposed to estrogen will synthesize vitellogenin, which is a female-specific protein. Estrogen exposure is also linked to sex reversal, intersexuality, and inhibition of gonadal growth (Jobling et al., 1996).

Wastewater treatment plants are major contributors of EDCs into the environment. EDCs end up in wastewater as a result of natural excretion from the body or being washed off the skin. WWTPs are not designed to remove these substances. As a result, EDCs …


Adaptive Image Diffusion In Wavelet Domain, Kumar Mandava Apr 2012

Adaptive Image Diffusion In Wavelet Domain, Kumar Mandava

College of Engineering: Graduate Celebration Programs

  • Removing noise without sacrificing important structures
  • Nonlinear strategies: Wavelet shrinkage and Nonlinear diffusion filtering based on features
  • Clustering based wavelet diffusion


Comparative Study Of Various Data Collection Software Used For Seat-Belt Observation Surveys, Atul Sancheti, Puneet Lakhanpal, Sergio Contreras, Pushkin Kachroo, Masha Wilson Apr 2012

Comparative Study Of Various Data Collection Software Used For Seat-Belt Observation Surveys, Atul Sancheti, Puneet Lakhanpal, Sergio Contreras, Pushkin Kachroo, Masha Wilson

College of Engineering: Graduate Celebration Programs

Every year, Click It or Ticket (CIOT) mobilization is held in U.S. which aims at increasing seat-belt usage awareness among the people. Data collection for assessing current seat-belt usage rates and campaign design for influencing mass audience are the two most important components of the mobilization. This paper presents a comparative study of various data collections software used for seat-belt observational surveys. The comparison is based on the speed and accuracy of the data collected from different software at the same locations and at the same time of the day.


College Of Engineering Graduate Celebration 2012 Announcement, University Of Nevada, Las Vegas Apr 2012

College Of Engineering Graduate Celebration 2012 Announcement, University Of Nevada, Las Vegas

College of Engineering: Graduate Celebration Programs

The Howard R. Hughes College of Engineering Graduate Celebration is an event that recognizes the scholarly work of our engineering and computer science graduate students within the college. The target audience includes undergraduate students, graduate students, college faculty and staff, and the campus community as well as local and regional stakeholders. The objective of the event is to promote and publicize the research activities of the College of Engineering and to inform our stakeholders of our students’ achievements.


Take Pride In America Phase Iii: Quarterly Progress Report, Period Covering January 25, 2012-April 24, 2012, Margaret N. Rees Apr 2012

Take Pride In America Phase Iii: Quarterly Progress Report, Period Covering January 25, 2012-April 24, 2012, Margaret N. Rees

Anti-littering Programs

  • The GIS database continued to be populated with data.
  • Hector’s Helpers participants completed multiple projects.
  • Social Media training was delivered.
  • The pilot testing of the litter monitoring program continued.

The University of Nevada Las Vegas Public Lands Institute (PLI) has designed the Take Pride in America (TPIA) Phase III work plan based on the strategic plan developed by the Southern Nevada Agency Partnership (SNAP) anti-litter and desert dumping team during Phase II of the program.


Academic Libraries: Sustainability In Action, Marianne A. Buehler Apr 2012

Academic Libraries: Sustainability In Action, Marianne A. Buehler

Library Faculty Presentations

Faculty and Librarian Collaborations:
- Sustainability Across the Curriculum
- Sustainability Research
- Sustainable Activity
- Opportunities


What Is Influencing Renewable Energy Infrastructure Deployment? A Multi-State Study Of U.S. Wind Generation Deployment Efforts, Laurence D. Helwig Apr 2012

What Is Influencing Renewable Energy Infrastructure Deployment? A Multi-State Study Of U.S. Wind Generation Deployment Efforts, Laurence D. Helwig

Graduate Research Symposium (2010 - 2017)

Recent research has determined what influences the adoption of state renewable energy policy instruments. At present, nearly all of the U.S. states have deployed or have begun to deploy infrastructure that derives energy from renewable resources. This multiple U.S. State study represents an effort to determine the factors that are influencing the wind renewable energy infrastructure deployment efforts in thirty-eight U.S. states that have widely varying wind power potential capacities, different capacities of wind generation infrastructure deployed and varying Renewable Portfolio Standard (RPS) policy goals. This study utilizes the internal determinants and regional diffusion theoretical models of government policy innovation …


An Energy Professionals' Networking Group That's Creating A Buzz, Nevada Institute For Renewable Energy Commercialization (Nirec) Apr 2012

An Energy Professionals' Networking Group That's Creating A Buzz, Nevada Institute For Renewable Energy Commercialization (Nirec)

Nevada Newsflash

Bleary-eyed but wide awake at 2:00 am, I reached for my phone for a little social media solace. Clicking into a popular networking site, I typed "energy" in the search field. To my surprise, the search returned a list of over 10,000 options.

As professionals, entrepreneurs and affiliates to the energy industry, let me spare you an early morning quest. There is an industry-related group that has quietly built a network of members 20,000-strong with tentacles reaching throughout the U.S. and abroad.


Racial Disparities In Cancer Screening Among Women With Chronic Joint Pain, Edith M. Williams, Laurene Tumiel-Berhalter, Christopher Purdy, Adrianne Ransom, Judith Anderson Apr 2012

Racial Disparities In Cancer Screening Among Women With Chronic Joint Pain, Edith M. Williams, Laurene Tumiel-Berhalter, Christopher Purdy, Adrianne Ransom, Judith Anderson

Journal of Health Disparities Research and Practice

Chronic pain related disorders and breast and cervical cancer are more prevalent among African-American women compared with non-Hispanic White women. However, few studies address how racial differences in the context of comorbidity may compound these disparities. This study used secondary analysis of the National Health Interview Survey (NHIS) to assess racial differences in breast and cervical cancer screening and patient education among adult women with chronic joint pain conditions. Statistical analyses included chi-square and independent samples t-tests. African-American women compared with non-Hispanic White women were less likely to receive a pap smear or mammogram within the last two years and …


Walking Box Ranch Planning And Design Quarterly Progress Report: Period Ending April 10, 2012, Margaret N. Rees Apr 2012

Walking Box Ranch Planning And Design Quarterly Progress Report: Period Ending April 10, 2012, Margaret N. Rees

Walking Box Ranch

  • BLM informed UNLV that the type of operating plan that was identified in June, 2011 as the appropriate instrument for future operations, and which was to have been completed by May 2012, prior to beginning construction, would not work for BLM. BLM informed UNLV that they are now considering a concession contract as the appropriate BLM document for the future operating partner.
  • BLM and UNLV visited the ranch for a day to examine the continuing deterioration of the ranch house from water, and to discuss how to address this on-going problem. The group reviewed damage owing to water coming into …


Hrc Enews — 2012 Spring, Megan M. Iudice Apr 2012

Hrc Enews — 2012 Spring, Megan M. Iudice

Publications (HRC)

This issue contains staff accomplishments and announcements, event listings, and a "new faces" listing for new staff, affiliates, and researchers.


A Green Marketing Guideline For The Cruise Industry In North America, Xi Guo Apr 2012

A Green Marketing Guideline For The Cruise Industry In North America, Xi Guo

UNLV Theses, Dissertations, Professional Papers, and Capstones

Purpose: The purpose of this professional paper is to develop a guideline of green marketing strategies for cruise managers in North America.

Statement of objectives: This paper will develop a customer relationship model according to the literature review of customer behavior and customer relationships in the hospitality industry. Meanwhile, the characteristics of green customers and the most popular green practices in the hotel and restaurant industry, and current sustainable achievements in the cruise industry will be investigated respectively. The green marketing guideline will be explored basing on the customer relationship model and the investigations of green customers and green practices …


Running Head: Sustainability Framework Applied To Integrated Resort 1 International Standard Of Sustainability Framework Applied To Integrated Resorts, Jong Hwa Jeon Apr 2012

Running Head: Sustainability Framework Applied To Integrated Resort 1 International Standard Of Sustainability Framework Applied To Integrated Resorts, Jong Hwa Jeon

UNLV Theses, Dissertations, Professional Papers, and Capstones

Purpose

The purpose of this study is to explore the extent to which Las Vegas integrated resorts apply measurement framework for sustainability. It will scrutinize and explore the existing sustainability strategies and practices, and look into several plausible ways to improve the sustainability movement that the companies in hospitality industry currently have. The paper will also look into the tracking and measuring system in consuming resources and the equivalent common actions taken by the management of the hospitality companies. From there, the paper will discuss the Global Reporting Initiative (GRI) guideline and establish if the companies have aligned their efforts …


Exploration Of Human-Computer Interaction (Hci) Applications In Hospitality Industry, Jia Wei Apr 2012

Exploration Of Human-Computer Interaction (Hci) Applications In Hospitality Industry, Jia Wei

UNLV Theses, Dissertations, Professional Papers, and Capstones

Purpose: The purpose of this professional paper is to explore and identify the best practices in Human-Computer Interaction (HCI) applications and use within the hospitality industry.

Statement of Objectives: To accomplish the stated purpose, first, the paper will provide the universal definition of HCI applications and define HCI within the context of hospitality industry. Second, the paper will gather and categorize information, such as the standards of designing HCI applications, from other fields of study such as informatics. Third, the paper will gather existing examples of HCI applications across different areas within the hospitality industry, such as the front desk …


Marketing Analysis For Bonk Knob Shoals Located In Van Buren County, Tennessee, Lillian Lee Ehrmann Apr 2012

Marketing Analysis For Bonk Knob Shoals Located In Van Buren County, Tennessee, Lillian Lee Ehrmann

UNLV Theses, Dissertations, Professional Papers, and Capstones

Purpose: The purpose of this paper is to provide Alfred Crabtree, owner of Bonk Knob Shoals, with a marketing plan. Bonk Knob Shoals will be an upscale campsite nearby Spencer, TN in Van Buren County.

Statement of Objective: Bonk Knob Shoals is currently under development and the owner wants to gain insight to LOHAS tourists, so he can create a suitable business plan to attract people in that niche market. Marketing is a huge component of the business plan because Crabtree believes a significant amount of resources will be needed to increase tourism awareness of the upscale campsite, …


The Hospitality Industry’S Response To Climate Change: Is The Response Sufficient?, Paul Michael Carlson Apr 2012

The Hospitality Industry’S Response To Climate Change: Is The Response Sufficient?, Paul Michael Carlson

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study was to explore the serious consequences that global warming and climate change pose for the planet and its inhabitants, and to shed light on the hospitality industry’s contribution to the problem. The study further sought to examine whether the hospitality industry is doing their part in implementing “green” programs to combat its negative contribution to climate change.


Nevada Interagency Volunteer Program: Helping Hands Across Public Lands – Phase Ii: Quarterly Progress Report, Period Covering January 1, 2012 To March 31, 2012, Margaret N. Rees Mar 2012

Nevada Interagency Volunteer Program: Helping Hands Across Public Lands – Phase Ii: Quarterly Progress Report, Period Covering January 1, 2012 To March 31, 2012, Margaret N. Rees

Get Outdoors Nevada

  • The number of records in the volunteer database increased by 4.96% over the last quarter. The database now contains 7,423 records.
  • Results show an average of 1,259 visits per month, and with an average of 3,015 pages viewed per month.
  • Get Outdoors Nevada supported 14 volunteer events in a variety of ways. These events utilized 364 volunteers whom contributed approximately 2,414 hours of service.
  • Three community outreach events were attended, resulting in 293 direct contacts with 50 names added to the database.
  • The automated volunteer orientation training project has been completed and disks have been delivered to the 4 agencies. …


Cleantech Open's $250,000 Business Competition - Learn More April 5, Nevada Institute For Renewable Energy Commercialization (Nirec) Mar 2012

Cleantech Open's $250,000 Business Competition - Learn More April 5, Nevada Institute For Renewable Energy Commercialization (Nirec)

Nevada Newsflash

Join us for an introduction to the Cleantech Open, the world's largest cleantech accelerator. You will learn about our annual Business Competition, an opportunity to accelerate your cleantech startup with expert training, national visibility and up to $250,000 of cash and services. Beyond great networking, the event will include a brief presentation about how you can get involved as a volunteer, mentor, judge or more.


Not Always Black And White: Racial Bias For Birth Disparities From Excluding Hispanic Identification, Barbara L. Wilson, Cristi Coursen, Matthew Butler Mar 2012

Not Always Black And White: Racial Bias For Birth Disparities From Excluding Hispanic Identification, Barbara L. Wilson, Cristi Coursen, Matthew Butler

Journal of Health Disparities Research and Practice

Despite gains in prenatal care (PNC) usage and birth outcomes for minority women during the past few decades, observed disparities between non-Hispanic Whites, Blacks, and Hispanics persist. Using the National Center for Health Statistics’ (NCHS) natality files from 1981 through 1998, Alexander, Kogan, & Nabukera (2002) examined live births of U.S. residents by trimester in which PNC was initiated and the appropriateness of that care based on the Adequacy of Prenatal Care Utilization Index (APNCU) (Kotelchuck, 1994). They found racial disparities between White and Black women in both the trimester of PNC initiation and the number of PNC visits made. …


Breast Cancer Screening Practices Among American Indians And Alaska Natives In The Midwest, Christine M. Daley, Melissa Filippi, Aimee S. James, Sarah Brokenleg, Stacy Braiuca, K. A. Greiner, Won S. Choi Mar 2012

Breast Cancer Screening Practices Among American Indians And Alaska Natives In The Midwest, Christine M. Daley, Melissa Filippi, Aimee S. James, Sarah Brokenleg, Stacy Braiuca, K. A. Greiner, Won S. Choi

Journal of Health Disparities Research and Practice

American Indian and Alaska Native (AI/AN) women currently have some of the highest mortality rates from breast cancer for any racial/ethnic group in the United States and some of the lowest screening rates. However, current data are not available for regional differences in screening, which can result in dramatically different stage at diagnosis and mortality. We conducted surveys with 120 focus group participants in a needs assessment of mammography among AI/AN in the greater Kansas City metropolitan area and parts of Northeast Kansas. We found that among women under age 40, for whom recommended screenings include only annual clinical breast …


Race And Hepatitis C Management Within The Veterans Administration, Joahd Toure, Joshua Metlay, Sandford Schwartz, Knashawn Morales, David Kaplan, Peter Groeneveld Mar 2012

Race And Hepatitis C Management Within The Veterans Administration, Joahd Toure, Joshua Metlay, Sandford Schwartz, Knashawn Morales, David Kaplan, Peter Groeneveld

Journal of Health Disparities Research and Practice

Objective: To examine black-white differences in hepatitis C treatment within the Veterans Administration (VA) and determine whether racial variation in specialty consultation explains differences in hepatitis C treatment between blacks and whites.

Methods: We performed a retrospective cohort study of 1040 veterans meeting VA eligibility criteria for hepatitis C treatment. We used multiple imputation to handle missing race data. Specialty consultation was determined from the VA outpatient medical dataset and hepatitis C treatment was determined from the VA decision support system. Conditional logistic regression was used to examine the association between race and hepatitis C treatment as well as race …


Poverty And Mortality Disparities In Central Appalachia: Mountaintop Mining And Environmental Justice, Michael Hendryx Mar 2012

Poverty And Mortality Disparities In Central Appalachia: Mountaintop Mining And Environmental Justice, Michael Hendryx

Journal of Health Disparities Research and Practice

Objectives. This study investigated the associations between poverty rates, Appalachian mountaintop coal mining, and age-adjusted total mortality rates to determine if persons exposed to this form of mining experience greater poverty and higher death rates compared to other types of mining or other areas of Appalachia.

Methods. Mortality rates, poverty rates, Appalachian designation and mining activity were examined for counties in Kentucky, Tennessee, Virginia and West Virginia (N=403). Linear least squares models tested for annual group differences from 2000-2007 in total and child poverty, and total mortality, based on mining type and Appalachian location. Nested linear models accounting for state-level …