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582 Matching Results
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3D Atom Probe Tomography Study on Segregation of Yttrium in Modified Aluminum-Silicon Alloys
In this article, yttrium segregation behavior in Al-Si alloys has been studied using the three-dimensional atom probe tomography technique. Al-Si alloys were prepared by casting method, and yttrium was added to modify the eutectic silicon morphology in these alloys. The results indicated that yttrium is preferentially located within the Si phase, with the highest concentration at the interface between eutectic Al and eutectic Si.
Date:
May 15, 2018
Creator:
De-Giovanni, Mario; Alam, Talukder; Banerjee, Rajarshi & Srirangam, Prakash
Object Type:
Article
System:
The UNT Digital Library
Access to Health Care and Rates of Mortality and Utilization for the Elderly in Rural America
The aging experience of men and women in rural America is different than that of their urban counterparts. In this study, I identified key disparities in access to health care, mortality, and utilization of health care that result from geographic location. Foundational theories are discussed to illustrate that disparities can originate from historical societal behaviors. Secondary data and literary reviews create a combined qualitative and quantitative approach to explore the rural/urban divide, concluding that the potential for increased disparities as the aging population grows is very real and rural residents remain vulnerable to a poor(er) aging experience. Recommendations for policy and practice, as well as additional research, are made to address the conclusion.
Date:
May 2018
Creator:
Johnson, Barbara Ann
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Accessing the Inaccessible: Capturing and Re-Purposing Metadata Prior to Digitization to Ensure Adequate Description and Access
Presented at the 2018 Texas Conference on Digital Libraries. This presentation provides a detailed look at how University of North Texas Libraries' Special Collections embarked upon a large-scale digitization project involving a portion of the highly requested A/V materials from the NBC-5/KXAS Television News collection, using a third-party vendor. This project included the use of snapshots to help repurpose metadata, then linked data tools in Excel and WikiMedia to create access to tape content titles.
Date:
May 17, 2018
Creator:
Pierce, Gregory & Niño, Ana
Object Type:
Presentation
System:
The UNT Digital Library
Accurate Joint Detection from Depth Videos towards Pose Analysis
Joint detection is vital for characterizing human pose and serves as a foundation for a wide range of computer vision applications such as physical training, health care, entertainment. This dissertation proposed two methods to detect joints in the human body for pose analysis. The first method detects joints by combining body model and automatic feature points detection together. The human body model maps the detected extreme points to the corresponding body parts of the model and detects the position of implicit joints. The dominant joints are detected after implicit joints and extreme points are located by a shortest path based methods. The main contribution of this work is a hybrid framework to detect joints on the human body to achieve robustness to different body shapes or proportions, pose variations and occlusions. Another contribution of this work is the idea of using geodesic features of the human body to build a model for guiding the human pose detection and estimation. The second proposed method detects joints by segmenting human body into parts first and then detect joints by making the detection algorithm focusing on each limb. The advantage of applying body part segmentation first is that the body segmentation method narrows …
Date:
May 2018
Creator:
Kong, Longbo
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Agronomic Performance and Lignin Content of HCT Down-Regulated Alfalfa (Medicago sativa L.)
This article evaluates HCT down-regulated alfalfa plants for their forage composition and agronomic performance in the greenhouse and under field conditions.
Date:
May 5, 2018
Creator:
Bhattarai, Kishor; Rajasekar, Shanmugam; Dixon, R. A. & Monteros, Maria J.
Object Type:
Article
System:
The UNT Digital Library
Alloy Development and High-Energy X-Ray Diffraction Studies of NiTiZr and NiTiHf High Temperature Shape Memory Alloys
NiTi-based shape memory alloys (SMAs) offer a good combination of high-strength, ductility, corrosion resistance, and biocompatibility that has served them well and attracted the attention of many researchers and industries. The alloys unique thermo-mechanical ability to recover their initial shape after relatively large deformations by heating or upon unloading due to a characteristic reversible phase transformation makes them useful as damping devices, solid state actuators, couplings, etc. However, there is a need to increase the temperature of the characteristic phase transformation above 150 °C, especially in the aerospace industry where high temperatures are often seen. Prior researchers have shown that adding ternary elements (Pt, Pd, Au, Hf and Zr) to NiTi can increase transformation temperatures but most of these additions are extremely expensive, creating a need to produce cost-effective high temperature shape memory alloys (HTSMAs). Thus, the main objective of this research is to examine the relatively unstudied NiTiZr system for the ability to produce a cost effective and formable HTSMA. Transformation temperatures, precipitation paths, processability, and high-temperature oxidation are examined, specifically using high energy X-ray Diffraction (XRD) measurements, in NiTi-20 at.% Zr. This is followed by an in situ XRD study of the phase growth kinetics of the favorable …
Date:
May 2018
Creator:
Carl, Matthew A
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 112, No. 286, Ed. 1 Wednesday, May 2, 2018
Semiweekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 2, 2018
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 112, No. 287, Ed. 1 Saturday, May 5, 2018
Semiweekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 5, 2018
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 112, No. 288, Ed. 1 Wednesday, May 9, 2018
Semiweekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 9, 2018
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 112, No. 289, Ed. 1 Saturday, May 12, 2018
Semiweekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 12, 2018
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 112, No. 290, Ed. 1 Wednesday, May 16, 2018
Semiweekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 16, 2018
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 112, No. 291, Ed. 1 Saturday, May 19, 2018
Semiweekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 19, 2018
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 112, No. 292, Ed. 1 Wednesday, May 23, 2018
Semiweekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 23, 2018
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 112, No. 293, Ed. 1 Saturday, May 26, 2018
Semiweekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 26, 2018
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 112, No. 294, Ed. 1 Wednesday, May 30, 2018
Semiweekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 30, 2018
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Alvin Advertiser (Alvin, Tex.), Ed. 1 Wednesday, May 2, 2018
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
May 2, 2018
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Alvin Advertiser (Alvin, Tex.), Ed. 1 Wednesday, May 9, 2018
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
May 9, 2018
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Alvin Advertiser (Alvin, Tex.), Ed. 1 Wednesday, May 16, 2018
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
May 16, 2018
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Alvin Advertiser (Alvin, Tex.), Ed. 1 Wednesday, May 23, 2018
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
May 23, 2018
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Alvin Advertiser (Alvin, Tex.), Ed. 1 Wednesday, May 30, 2018
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
May 30, 2018
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Alvin Sun (Alvin, Tex.), Vol. 128, No. 30, Ed. 1 Sunday, May 6, 2018
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
May 6, 2018
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Alvin Sun (Alvin, Tex.), Vol. 128, No. 31, Ed. 1 Sunday, May 13, 2018
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
May 13, 2018
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Alvin Sun (Alvin, Tex.), Vol. 128, No. 32, Ed. 1 Sunday, May 20, 2018
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
May 20, 2018
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Alvin Sun (Alvin, Tex.), Vol. 128, No. 33, Ed. 1 Sunday, May 27, 2018
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
May 27, 2018
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History