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A 018μm Cmos Transmitter for Ecg Signals
Electrocardiography (ECG) signal transmitter is the device used to transmit the electrical signals of the heart to the remote machine. These electrical signals are ECG signals caused due to electrical activities in the heart. ECG signals have very low amplitude and frequency; hence amplification of the signals is needed to strengthen the signal. Conversion of the amplified signal into digital information and transmitting that information without losing any data is the key. This information is further used in monitoring the heart.
Date:
December 2013
Creator:
Kakarna, Tejaswi
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
2012 Household Travel Survey Symposium: Conference Summary and Final Report
Conference summary and compiled reports from the 2012 Household Travel Survey Symposium.
Date:
December 2013
Creator:
Texas A & M Transportation Institute
Object Type:
Report
System:
The Portal to Texas History
2013 Tax Filing Season: IRS Needs to Do More to Address the Growing Imbalance between the Demand for Services and Resources
A letter report issued by the Government Accountability Office with an abstract that begins "Despite efficiency gains from processing more tax returns electronically, adding website services, and shifting resources from enforcement, the Internal Revenue Service (IRS) was unable to keep up with demand for telephone and correspondence services. Access to IRS's telephone assistors remained at 68 percent from 2012. The percentage of overage paper correspondence (over 45 days old) increased to 47 percent from 40 percent in 2012. In the face of similar trends, last year GAO reported that a dramatic revision in IRS's taxpayer service strategy was needed and recommended IRS take steps to better balance demand for services with available resources. GAO acknowledged this may require IRS to consider difficult tradeoffs, such as limiting some services. In response, IRS has proposed eliminating or reducing some services for 2014 such as answering basic tax law questions only during the filing season. However, IRS officials told GAO the proposed cuts may not be sufficient to stop the deterioration in services. Until IRS develops a strategy, it risks not communicating expectations about the level of services it can provide based on the resources available. IRS could use the strategy to facilitate …
Date:
December 18, 2013
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
3GPP Long Term Evolution LTE Scheduling
Future generation cellular networks are expected to deliver an omnipresent broadband access network for an endlessly increasing number of subscribers. Long term Evolution (LTE) represents a significant milestone towards wireless networks known as 4G cellular networks. A key feature of LTE is the implementation of enhanced Radio Resource Management (RRM) mechanism to improve the system performance. The structure of LTE networks was simplified by diminishing the number of the nodes of the core network. Also, the design of the radio protocol architecture is quite unique. In order to achieve high data rate in LTE, 3rd Generation Partnership Project (3GPP) has selected Orthogonal Frequency Division Multiplexing (OFDM) as an appropriate scheme in terms of downlinks. However, the proper scheme for an uplink is the Single-Carrier Frequency Domain Multiple Access due to the peak-to-average-power-ratio (PAPR) constraint. LTE packet scheduling plays a primary role as part of RRM to improve the system’s data rate as well as supporting various QoS requirements of mobile services. The major function of the LTE packet scheduler is to assign Physical Resource Blocks (PRBs) to mobile User Equipment (UE). In our work, we formed a proposed packet scheduler algorithm. The proposed scheduler algorithm acts based on the number …
Date:
December 2013
Creator:
Alotaibi, Sultan
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Abrasion Testing of Critical Components of Hydrokinetic Devices
The objective of the Abrasion Testing of Critical Components of Hydrokinetic Devices (Project) was to test critical components of hydrokinetic devices in waters with high levels of suspended sediment – information that is widely applicable to the hydrokinetic industry. Tidal and river sites in Alaska typically have high suspended sediment concentrations. High suspended sediment also occurs in major rivers and estuaries throughout the world and throughout high latitude locations where glacial inputs introduce silt into water bodies. In assessing the vulnerability of technology components to sediment induced abrasion, one of the greatest concerns is the impact that the sediment may have on device components such as bearings and seals, failures of which could lead to both efficiency loss and catastrophic system failures.
Date:
December 6, 2013
Creator:
Worthington, Monty; Ali, Muhammad & Ravens, Tom
Object Type:
Report
System:
The UNT Digital Library
The Academic and Athletic Experiences of African-american Males in a Division I (Fbs) Football Program
This study investigated the academic and athletic experiences of African-American males in a Division I football bowl subdivision football program. Critical race theory, identity development model, and social learning model were the theoretical frameworks used as the critical lenses in a qualitative design to examine the participants. The participants’ responses were analyzed and interpreted using thematic analysis. A qualitative research design, which included individual interviews with 10 second year African-American male football players, was used to address this research problem. The goal was to bring together both the psychological and sociological perspectives and to challenge participants to candidly describe their academic and athletic experiences and attitudes toward obtaining an undergraduate degree. Four themes were determined in the data analysis: differential treatment and determining oneself, time management, relationships, and career aspirations. In relation to the theoretical frameworks, the development of self-confidence and knowledge of balancing their academic and athletic schedules was critical for all participants. The sense of feeling different and challenged because of the differences in culture and experience was evident. From this study, university and collegiate athletics administrators may better understand the backgrounds, challenges, and learning needs of this population. As a result, higher education personnel may improve the …
Date:
December 2013
Creator:
Salinas, Silvia M.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Acute Hormonal Response to the Kettlebell Swing Exercise
The purpose of this investigation was to examine the acute hormonal response to a bout of kettlebell swing exercise. Ten healthy men (19-30 y, 23.6 ± 3.5 y, 174.6 ± 5.7 cm, 78.7 ± 9.9 kg) who were engaged in resistance training at least twice per week but were inexperienced with kettlebell swings participated in this study. Participants were familiarized with the kettlebell swing exercise during an initial visit. During the subsequent experimental protocol visit, participants performed 12 rounds of 30 seconds of 16-kg kettlebell swings alternated with 30 seconds of rest. Heart rate (HR) and rating of perceived exertion (RPE) were measured at the end of every round of swings. Fasted blood samples were collected pre-exercise (PRE), immediately post (IP), 15 minutes post (P15), and 30 minutes post exercise (P30) and analyzed for total testosterone (T), growth hormone (GH), cortisol, and lactate concentrations. Participants completed a total of 227 ± 23 swings (average swings per round: 19 ± 2). HR and RPE increased significantly (P < 0.05) throughout the exercise protocol. Lactate concentrations were significantly increased at all post exercise time points compared to PRE. T was significantly increased at IP compared to PRE. GH was significantly increased at …
Date:
December 2013
Creator:
Budnar, Ronald Gene, Jr.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Adolescent Behavior Problems and Interparental Conflict: the Moderating Role of Parent-child Attachment
The current study examined the role that parent-child attachment plays in the relationship between marital conflict and the development of behavior problems in adolescents. To evaluate the hypothesis that attachment moderates this relationship, 57 families were recruited via e-mail invitation sent to families that participated in local church youth groups, school organizations, and a treatment program designed for adolescents with behavior problems. One custodial parent and his/her adolescent child completed an online or paper version of a survey consisting of the Achenbach’s Behavior Checklists, the Inventory of Parent and Peer Attachment, and the Children’s Perception of Interparental Conflict Scale. Hypotheses were evaluated using Baron and Kenny’s (1986) procedures to test moderating effects with multiple regression analyses. Mother attachment demonstrated a significant moderation effect between the intensity of interparental conflict and the parent’s report of externalizing behavior problems. Specifically, at low conflict intensity levels, relative to low attachment security, high attachment security was associated with fewer externalizing behavior problems, whereas at high intensities of interparental conflict high attachment security was associated with more externalizing behavior problems.
Date:
December 2013
Creator:
Daubs, Carlyn
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Advanced Energy Retrofit Guide: Practical Ways to Improve Energy Performance, K-12 Schools (Book)
The U.S. Department of Energy developed the Advanced Energy Retrofit Guides (AERGs) to provide specific methodologies, information, and guidance to help energy managers and other stakeholders plan and execute energy efficiency improvements. Detailed technical discussion is fairly limited. Instead, we emphasize actionable information, practical methodologies, diverse case studies, and unbiased evaluations of the most promising retrofit energy efficiency measures for each building type. A series of AERGs is under development, addressing key segments of the commercial building stock. K-12 schools were selected as one of the highest priority building sectors, because schools affect the lives of most Americans. They also represent approximately 8% of the energy use and 10% of the floor area in commercial buildings nationwide. U.S. K-12 school districts spend more than $8 billion each year on energy - more than they spend on computers and textbooks combined. Most occupy older buildings that often have poor operational performance - more than 30% of schools were built before 1960. The average age of a school is about 42 years - which is nearly the expected serviceable lifespan of the building. K-12 schools offer unique opportunities for deep, cost-effective energy efficiency improvements, and this guide provides convenient and practical guidance …
Date:
December 1, 2013
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Ag BL Description for General Atomics
None
Date:
December 9, 2013
Creator:
Huntington, C.
Object Type:
Report
System:
The UNT Digital Library
An Age-based Etic Analysis of Orthographic Variation in Computer-mediated French Discourse
This study examines orthographic variation in synchronous computer-mediated French discourse. All nontraditional variations of selected frequently occuring items are quantified in order to provide an etic (i.e., from an external perspective) analysis. The primary variable of interest is age since this study focuses on providing a comparison of chat participants in their twenties versus those in their fifties. The widespread claim is that younger people communicate using more informal and/or nontraditional forms than older people; however, the results of the present study suggest that this is not always the case. The main finding of the present study is that the twentysomethings and the fiftysomethings produce the nontraditional orthography in a similar fashion in 52.2% of the terms, and in a non-similar fashion in 47.8% of the terms. Following the presentation and discussion of the results, directions for future research are provided.
Date:
December 2013
Creator:
Kharrat, Laila Kiblawi
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
[Age of the UNT Libraries Collection Dataset, 2013]
Dataset generated for the University of North Texas Libraries collection tabulating the number of items published by decade within each subject area.
Date:
December 2013
Creator:
University of North Texas. Libraries.
Object Type:
Dataset
System:
The UNT Digital Library
Air-to-Water Heat Pumps With Radiant Delivery in Low-Load Homes
Space conditioning represents nearly 50% of average residential household energy consumption, highlighting the need to identify alternative cost-effective, energy-efficient cooling and heating strategies. As homes are better built, there is an increasing need for strategies that are particularly well suited for high performance, low load homes. ARBI researchers worked with two test homes in hot-dry climates to evaluate the in-situ performance of air-to-water heat pump (AWHP) systems, an energy efficient space conditioning solution designed to cost-effectively provide comfort in homes with efficient, safe, and durable operation. Two monitoring projects of test houses in hot-dry climates were initiated in 2010 to test this system. Both systems were fully instrumented and have been monitored over one year to capture complete performance data over the cooling and heating seasons. Results are used to quantify energy savings, cost-effectiveness, and system performance using different operating modes and strategies. A calibrated TRNSYS model was developed and used to evaluate performance in various climate regions. This strategy is most effective in tight, insulated homes with high levels of thermal mass (i.e. exposed slab floors).
Date:
December 1, 2013
Creator:
Backman, C.; German, A.; Dakin, B. & Springer, D.
Object Type:
Report
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 138, No. 29, Ed. 1 Thursday, December 5, 2013
Weekly newspaper from Albany, Texas that includes local, state and national news along with advertising.
Date:
December 5, 2013
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
The Albany News (Albany, Tex.), Vol. 138, No. 30, Ed. 1 Thursday, December 12, 2013
Weekly newspaper from Albany, Texas that includes local, state and national news along with advertising.
Date:
December 12, 2013
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
The Albany News (Albany, Tex.), Vol. 138, No. 31, Ed. 1 Thursday, December 19, 2013
Weekly newspaper from Albany, Texas that includes local, state and national news along with advertising.
Date:
December 19, 2013
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
The Albany News (Albany, Tex.), Vol. 138, No. 32, Ed. 1 Thursday, December 26, 2013
Weekly newspaper from Albany, Texas that includes local, state and national news along with advertising.
Date:
December 26, 2013
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
Alstom's Chemical Looping Combustion Prototype for CO{sub 2} Capture from Existing Pulverized Coal-Fired Power Plants: Final Report
Alstom’s Limestone Chemical Looping (LCL™) process has the potential to capture CO{sub 2} from new and existing coal-fired power plants while maintaining high plant power generation efficiency. This new power plant concept is based on a hybrid combustion- gasification process utilizing high temperature chemical and thermal looping technology. This process could also be potentially configured as a hybrid combustion-gasification process producing a syngas or hydrogen for various applications while also producing a separate stream of CO{sub 2} for use or sequestration. The targets set for this technology is to capture over 90% of the total carbon in the coal at cost of electricity which is less than 20% greater than Conventional PC or CFB units. Previous work with bench scale test and a 65 kWt Process Development Unit Development (PDU) has validated the chemistry required for the chemical looping process and provided for the investigation of the solids transport mechanisms and design requirements. The objective of this project is to continue development of the combustion option of chemical looping (LCL-C™) by designing, building and testing a 3 MWt prototype facility. The prototype includes all of the equipment that is required to operate the chemical looping plant in a fully integrated …
Date:
December 2013
Creator:
Andrus, Herbert; Chiu, John; Edberg, Carl; Thibeault, Paul & Turek, David
Object Type:
Report
System:
The UNT Digital Library
Altmetrics: What is it and how is it relevant to librarians?
Presentation for the Cross Timbers Library Collaborative (CTLC) Scholarly Communications and Digital Curation (SCDC) Affinity Group 2013 Winter Meeting. This presentation discusses altmetrics including what it is and how it is relevant to librarians.
Date:
December 13, 2013
Creator:
Iakovakis, Clarke & Mirza, Rafia
Object Type:
Presentation
System:
The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 114, No. 181, Ed. 1 Sunday, December 1, 2013
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 1, 2013
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 114, No. 182, Ed. 1 Tuesday, December 3, 2013
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 3, 2013
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 114, No. [183], Ed. 1 Wednesday, December 4, 2013
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 4, 2013
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 114, No. 184, Ed. 1 Thursday, December 5, 2013
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 5, 2013
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 114, No. 185, Ed. 1 Friday, December 6, 2013
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 6, 2013
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History