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Field Validation of Zero Energy Lab Water-to-Water Ground Coupled Heat Pump Model
Heat pumps are a vital part of each building for their role in keeping the space conditioned for the occupant. This study focuses on developing a model for the ground-source heat pump at the Zero Energy lab at the University of North Texas, and finding the minimum data required for generating the model. The literature includes many models with different approaches to determine the performance of the heat pump. Each method has its pros and cons. In this research the equation-fit method was used to generate a model based on the data collected from the field. Two experiments were conducted for the cooling mode: the first one at the beginning of the season and the second one at the peak of the season to cover all the operation conditions. The same procedure was followed for the heating mode. The models generated based on the collected data were validated against the experiment data. The error of the models was within ±10%. The study showed that the error could be reduced by 20% to 42% when using the field data to generate the model instead of the manufacturer’s catalog data. Also it was found that the minimum period to generate the cooling …
Date:
May 2016
Creator:
Abdulameer, Saif
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Conversion Tower for Dispatchable Solar Power
Advanced Research Projects Agency-Energy project sheet summarizing general information about the High Energy Advanced Thermal Storage (HEATS) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses new system architecture for a solar-electric conversion tower as part of the "High-Efficiency Solar-Electric Conversion Power Tower" project.
Date:
May 25, 2012
Creator:
Abengoa Solar, Inc.
Object Type:
Text
System:
The UNT Digital Library
Doctoral Recital: 2015-05-20 - Daniel Adamson, trumpet
Recital presented at the UNT College of Music Recital Hall.
Date:
May 20, 2015
Creator:
Adamson, Daniel
Object Type:
Sound
System:
The UNT Digital Library
[Northern view of the UNT Administration building with surrounding grounds]
Photograph of the Hurley Administration Building on the UNT campus from the north. There are students walking, riding bikes, and sitting on stone benches in the area in front of the building. There are several trees on either side and grass lawns in the area as well.
Date:
2018-05~
Creator:
Adnan, Sahar
Object Type:
Photograph
System:
The UNT Digital Library
National Healthcare Disparities Report 2013
This report summarizes data gathered to address three key questions: what is the status of health care quality, access and disparities in the United States, How have health care quality; access and disparities changed over time; where are health care quality, access, and disparities improving and where are they getting worse.
Date:
May 2014
Creator:
Agency for Healthcare Research and Quality
Object Type:
Report
System:
The UNT Digital Library
Ozone Pollution of Shale Gas Activities in North Texas
The effect of shale gas activities on ground-level ozone pollution in the Dallas-Fort Worth area is studied in detail here. Ozone is a highly reactive species with harmful effects on human and environment. Shale gas development, or fracking, involves activities such as hydraulic fracturing, drilling, fluid mixing, and trucks idling that are sources of nitrogen oxides (NOX) and volatile organic compounds (VOC), two of the most important precursors of ozone. In this study two independent approaches have been applied in evaluating the influences on ozone concentrations. In the first approach, the influence of meteorology were removed from ozone time series through the application of Kolmogorov-Zurbenko low-pass filter, logarithmic transformation, and subsequent multi-linear regression. Ozone measurement data were acquired from Texas Commission on Environmental Quality (TCEQ) monitoring stations for 14 years. The comparison between ozone trends in non-shale gas region and shale gas region shows increasing ozone trends at the monitoring stations in close proximity to the Barnett Shale activities. In the second approach, the CAMx photochemical model was used to assess the sensitivity of ozone to the NOX and VOC sources associated with shale oil and gas activities. Brute force method was applied on Barnett Shale and Haynesville Shale emission …
Date:
May 2016
Creator:
Ahmadi, Mahdi
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Riding Lucifer's Line: Ranger Deaths Along the Texas-mexico Border
Access:
Use of this item is restricted to the UNT Community
The Texas-Mexico border is trouble. Haphazardly splashing across the meandering Rio Grande into Mexico is—or at least can be—risky business, hazardous to one’s health and well-being. Kirby W. Dendy, the Chief of Texas Rangers, corroborates the sobering reality: “As their predecessors for over one hundred forty years before them did, today’s Texas Rangers continue to battle violence and transnational criminals along the Texas-Mexico border.” In Riding Lucifer’s Line, Bob Alexander, in his characteristic storytelling style, surveys the personal tragedies of twenty-five Texas Rangers who made the ultimate sacrifice as they scouted and enforced laws throughout borderland counties adjacent to the Rio Grande. The timeframe commences in 1874 with formation of the Frontier Battalion, which is when the Texas Rangers were actually institutionalized as a law enforcing entity, and concludes with the last known Texas Ranger death along the border in 1921. Alexander also discusses the transition of the Rangers in two introductory sections: “The Frontier Battalion Era, 1874-1901” and “The Ranger Force Era, 1901-1935,” wherein he follows Texas Rangers moving from an epochal narrative of the Old West to more modern, technological times. Written absent a preprogrammed agenda, Riding Lucifer’s Line is legitimate history. Adhering to facts, the author is …
Date:
May 15, 2013
Creator:
Alexander, Bob
Object Type:
Book
System:
The UNT Digital Library
"Miss Kathy"
Miss Kathy is a documentary film that tells the story of Kathy Griffin-Grinan, a lead recovery coach for prostitution and human trafficking with the Harris County Sheriff’s Office. Her non-profit organization —We’ve Been There, Done That – works in conjunction with law-enforcement to offer the survivors of prostitution a chance at rehabilitation. With endless enthusiasm, she mentors survivors as they struggle to escape a destructive lifestyle. This film also explores the relationship between human trafficking and prostitution, while addressing issues of victimization and exploitation.
Date:
May 2015
Creator:
Alexander, Jeffrey, 1982-
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Impact of Sociocultural and Information Communication Technology Adoption Factors on the Everyday Life Information Seeking Behavior of Saudi Students in the United States
Access:
Use of this item is restricted to the UNT Community
This study analyzes the sociocultural factors that affect Saudi students in the U.S. as they seek information and explores to what extent these factors impact their everyday life information seeking (ELIS) behavior and their information technology behavior (ITB). The factors in this study illustrate the unique sociocultural values that distinguish Saudi students from other international student groups: gender segregation, emphasis on religion, social support, and utilization of the consultation concept. After collecting data from an online survey, the data from linear regression analyses revealed that only one culture factor (the language barrier) showed a significant impact on Saudi student ELIS in the U.S., while the other factors were not statistically significant. Also, the findings indicated that perceived usefulness (PU) and perceived ease of use (PEU) were statistically significant to the ELIS of Saudi students. Furthermore, the study showed that after academic information, food and drink, entertainment, and health were the top student needs, the top ranking sources for everyday life seeking information were social media and the Internet. The findings of the study help to shed light on a sizable user group. As the fourth largest group of international students in the U.S., Saudi students have been underrepresented in research. …
Date:
May 2019
Creator:
Alkahtani, Latifah M
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Mount Pleasant Tribune (Mount Pleasant, Tex.), Vol. 144, No. 44, Ed. 1 Wednesday, May 2, 2018
Semiweekly newspaper from Mount Pleasant, Texas that includes local, state, and national news along with advertising.
Date:
May 2, 2018
Creator:
Alsobrook, Bruce
Object Type:
Newspaper
System:
The Portal to Texas History
Mount Pleasant Tribune (Mount Pleasant, Tex.), Vol. 144, No. 45, Ed. 1 Saturday, May 5, 2018
Semiweekly newspaper from Mount Pleasant, Texas that includes local, state, and national news along with advertising.
Date:
May 5, 2018
Creator:
Alsobrook, Bruce
Object Type:
Newspaper
System:
The Portal to Texas History
Mount Pleasant Tribune (Mount Pleasant, Tex.), Vol. 144, No. 46, Ed. 1 Wednesday, May 9, 2018
Semiweekly newspaper from Mount Pleasant, Texas that includes local, state, and national news along with advertising.
Date:
May 9, 2018
Creator:
Alsobrook, Bruce
Object Type:
Newspaper
System:
The Portal to Texas History
Mount Pleasant Tribune (Mount Pleasant, Tex.), Vol. 144, No. 47, Ed. 1 Saturday, May 12, 2018
Semiweekly newspaper from Mount Pleasant, Texas that includes local, state, and national news along with advertising.
Date:
May 12, 2018
Creator:
Alsobrook, Bruce
Object Type:
Newspaper
System:
The Portal to Texas History
Mount Pleasant Tribune (Mount Pleasant, Tex.), Vol. 144, No. 48, Ed. 1 Wednesday, May 16, 2018
Semiweekly newspaper from Mount Pleasant, Texas that includes local, state, and national news along with advertising.
Date:
May 16, 2018
Creator:
Alsobrook, Bruce
Object Type:
Newspaper
System:
The Portal to Texas History
Nuestra Voz De North Texas (Fort Worth, Tex.), Vol. 1, No. 7, Ed. 1, May/June 2014
Newspaper providing news and information to the Tarrant and Dallas County Latino communities along with advertising.
Date:
May 2014
Creator:
Alvarado, Felix
Object Type:
Newspaper
System:
The Portal to Texas History
Nuestra Voz De North Texas (Fort Worth, Tex.), Vol. 2, No. 18, Ed. 1, May 2015
Monthly newspaper providing news and information to the Tarrant, Dallas, and Denton County Latino communities along with advertising.
Date:
May 2015
Creator:
Alvarado, Felix
Object Type:
Newspaper
System:
The Portal to Texas History
Nuestra Voz (Fort Worth, Tex.), Vol. 2, No. 24, Ed. 1, May 2016
Monthly newspaper providing news and information to the Tarrant, Dallas, and Denton County Latino communities along with advertising.
Date:
May 2016
Creator:
Alvarado, Felix
Object Type:
Newspaper
System:
The Portal to Texas History
Nuestra Voz (Fort Worth, Tex.), Vol. 3, No. 42, Ed. 1, May 2017
Monthly newspaper providing news and information to the Tarrant, Dallas, and Denton County Latino communities along with advertising.
Date:
May 2017
Creator:
Alvarado, Felix
Object Type:
Newspaper
System:
The Portal to Texas History
Southwest Retort, Volume 62, Number 9, May 2010
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
May 2010
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Southwest Retort, Volume 63, Number 9, May 2012
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
May 2011
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Southwest Retort, Volume 64, Number 8, May 2012
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
May 2012
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Southwest Retort, Volume 65, Number 9, May 2013
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
May 2013
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Southwest Retort, Volume 66, Number 9, May 2014
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
May 2014
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Southwest Retort, Volume 67, Number 9, May 2015
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
May 2015
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library