2,698 research outputs found
Identifying Heirsā Property: Extent and Value Across the South and Appalachia
A database of property tax records was used to locate and quantify the extent of heirs\u27 property across 11 states (Alabama, Florida, Georgia, Kentucky, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, and West Virginia). Based on previously published work, an index of four variables was then developed to estimate the likelihood that a given parcel was heirsā property. The authors conservatively estimate that there are at least 496,994 parcels of heirsā properties with a combined total area of 5.3 million acres and a market value of $41.9 billion in these states
High-Speed, Three-Dimensional Quantification of Ladybug Flapping Wing Kinematics During Takeoff
Ladybug wing and body kinematics during takeoff is explored using high-speed stereoscopic images acquired at a rate of 3000 frames per second. A direct linear transformation algorithm is used to quantify positions of selected locations on the body, forewings (elytra), and hindwings. Design and setup of instrumentation and analysis procedures are explained. Flapping frequency is reported. Significant motion of the forewing and other findings are presented and their applications are discussed
Design of a Flapping Wing Mechanism for Force Analysis and Optimization
The design of a robotic flapping wing mechanism is discussed. The design allows for dynamic adjustment of flapping trajectory in fluid with three rotational degrees of freedom, while keeping all motors and encoders out of the fluid (i.e., water or oil) to protect critical equipment from potential failure and increase reliability. Mechanism control is discussed. Preliminary optimization using a Box-Behnkin design approach is used and shows successful parameter optimization. Mechanism limitations are addressed
Flash-Mold Machine for Manufacturing Drug Implants
This Final Project Report provides the reader with a comprehensive detailing of all of the actions and work that has been completed for this Senior Design Project. In this report, the Cal Poly Biomedical Engineering Senior Project Team will discuss some background on the existing Mark I Flash-Mold Machine currently in use by Gesea Biosciences, background information on Gesea Biosciences, the Customer Requirements and Design Specifications of the new machine, Quality Engineering considerations, design concepts discussed, design concepts chosen, safety considerations, prototype development, manufacturing, testing protocols, and testing results, etc
Analysis of data on the certificate of advanced graduate specialization program as collected by means of questionnaire
Thesis (Ed.M.)--Boston Universit
The effect of simulated post weld heat treatment temperature overshoot on microstructural evolution in P91 and P92 power plant steels
Creep strength enhanced ferritic (CSEF) steels, in particular modified 9Cr steels Grade 91 and 92, are becoming more widely used in the electrical power generation industry for the construction of header and steam piping in advanced coal-fired power plants. They typically enter service having received a standard high temperature normalizing treatment following by a lower temperature tempering treatment designed to produce an optimum microstructural condition. However, situations may arise in practice, particularly during welding operations for example, whereby the component may receive an additional heat treatment which briefly exceeds the Ac, and possibly the Ac , temperature before stabilizing at the tempering temperature. In this research, simulated post weld heat treatments (PWHT) have been applied to Grade 91 and 92 materials using carefully controlled heating and cooling rates within a dilatometer. Peak temperatures applied were below Ac, between Ac and Ac, and above Ac, prior to a subsequent heat treatment at 750Ā°C for 2 hours. Hardness measurements demonstrated a significant reduction once the Ac temperature was exceeded. Advanced electron microscopy has been carried out to investigate the effect of the PWHT excursions on subsequent microstructural evolution. Electron back scatter diffraction has been used to quantify the nature of the martensite laths and grain structure changes as a function of temperature. The detailed size distribution of carbides within the microstructure has also been determined using both scanning and transmission electron microscopy. These results are discussed in respect of the likely consequences of such a PWHT overshoot on subsequent mechanical properties during high temperature service. Copyright Ā© 2011 Electric Power Research Institute Distributed by ASM InternationalĀ®. All rights reserved
Heirsā Property: Where, How Much, and Why Does It Matter?
Heirsā property comes into being when the owner of real property (usually a house and/or land) dies without a will. All heirs (e.g., spouse and children) become owners of an undivided interest in the property, with the division determined by state law. Heirsā property is significant as a social and historical phenomenon because property has been passed down without wills across multiple generations of Blacks in the South and whites in Appalachia because limited educational opportunities and patterns of exploitation led them to distrust the legal system. Heirs can number in the hundreds, presenting obstacles and vulnerabilities and limiting property ownership as a means of building intergenerational wealth. Quantifying the extent and value of heirsā property is necessary to inform legislation and policy, and to guide future research. We summarize the findings of two peer-reviewed studies designed to meet these needs
Low-fluence Electron Yields of Highly Insulating Materials
Electron-induced electron yields of high-resistivity high-yield materials - ceramic polycrystalline aluminum oxide and polymer polyimide (Kapton HN) - were made by using a low-fluence pulsed incident electron beam and charge neutralization electron source to minimize charge accumulation. Large changes in the energy-dependent total yield curves and yield decay curves were observed, even for incident electron fluences of \u3c 3 fC/mm2. The evolution of the electron yield as charge accumulates in the material is modeled in terms of electron recapture based on an extended Chung-Everhart model of the electron emission spectrum. This model is used to explain the anomalies measured in highly insulating high-yield materials and to provide a method for determining the limiting yield spectra of uncharged dielectrics. The relevance of these results to spacecraft charging is also discussed
Physician-prescribed Asthma Treatment Regimen does not differ Between Smoking and Non-smoking Patients With Asthma in Seoul and Gyunggi province of Korea
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. ACKNOWLEDGMENTS The authors thank Lauren Weisenfluh and Melissa Stauffer, PhD, in collaboration with SCRIBCO, for medical writing assistance. Funding for this research was provided by Merck & Co., Inc. The authors also wish to thank Eric Maiese and Sharlette Everett for their contributions to the design and implementation of the study and the analytic plan. The authors would also like to thank the study investigators who contributed to patient enrollment and data collection: Drs. Young Il Hwang (Hallym University Sacred Heart Hospital), Young Min Ye (Ajou University Medical Center), Joo Hee Kim (Ajou University Medical Center), Heung Woo Park (Seoul National University Hospital), Tae Wan Kim (Seoul National University Hospital), Jae Jeong Shim (Korea University Guro Hospital), Gyu Young Hur (Korea University Guro Hospital), Soo Taek Uh (SoonChunHyang University Hospital), Sang Ha Kim (Wonju Christian Hospital), Myoung Kyu Lee (Wonju Christian Hospital), Soo Keol Lee (Dong-A Medical Center), Jin Hong Chung (Yeungnam University Medical Center), Kyu Jin Kim (Yeungnam University Medical Center), Young Koo Jee (Dankook University Hospital), Kyung Mook Kim (Dankook University Hospital), Young Il Koh (Chonnam National University Hospital), Cheol Woo Kim (Inha university Hospital), You Sook Cho (Seoul Asan Medical Center), Tae Bum Kim (Seoul Asan Medical Center), Jae Myung Lee (Myeong Internal Medicine), Young Mok Lee (Good Friends Internal Medicine), Bong Chun Lee (Namsan Hospital), So Yoen Park (A&A Clinic).Peer reviewedPublisher PD
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