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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Study and Analysis of the Electrical and Mechanical Parts in a Wind Turbine

Bin, Bai, Ahmad, Allouh January 2016 (has links)
A wind turbine is a complex electromechanical system. It is important to know how to control it, particularly if high performance and good efficiency are needed. Understanding the rules of nature and the behavior of a wind turbine, especially in its operation, is a subject that requires a number of types of specialized knowledge. We also need to know how to work on them, and then carry out further research and development on their functionality. In this thesis we have studied in different aspects of wind turbine. There are two types of wind turbines (Horizontal axis & Vertical axis). In our thesis we have only focused on the horizontal-axis type. / Wind Power Turbine
12

Development of an Ovine Genome Map with Emphasis on In Situ Hybridization

Heaton, Melanie R. 01 May 1996 (has links)
Livestock genome maps are used to identify economic trait loci and loci proximal to genes affecting economically important traits. This research contributes to the development of the ovine genome map by establishing techniques to physically map large DNA inserts to ovine chromosomes using fluorescent in situ hybridization. Fluorescent in situ hybridization techniques were established using yeast artificial chromosomes as DNA probes. Probes were as large as 1,000,000 kilobases and hybridized to fixed ovine metaphase chromosomes from a callipyge ewe. Three yeast artificial chromosome probes contained a genetic marker for the ovine callipyge gene. Probes were assigned to ovine chromosome pair 18, which was distinguished by a fluorescent R-band pattern. This method verified the location of the marker, which had previously been assigned to chromosome 18 through linkage analysis. This study also determined whether a chromosomal alteration is the cause of the callipyge phenotype, an economically advantageous trait where muscle mass is increased and fat deposition is decreased. A fibroblast cell line was produced from a six-month-old callipyge ewe. Chromosomes were examined using G and R dynamic banding techniques. The ewe had a normal diploid chromosome number of 54, and the karyotype consisted of 3 pairs of submetacentric chromosomes, 23 pairs of acrocentric autosomes, and 2 large acrocentric X chromosomes. G and R banding did not reveal any chromosomal structural abnormalities at the level of resolution (premetaphase) used in this study.
13

Study and Implementation of Automatic Gain Control, High Voltage Integrated Circuits, and Backplane Transceiver

Yang, Shang-Hsien 26 July 2011 (has links)
Thanks to the advance in CMOS technology, an extensive category of applications has been migrated from traditional BJT-based processes. System-on-a-Chip (SoC) realization of digital, analog, and even high voltage devices is now a reality. To address the challenge imposed by integrating analog and high voltage devices in standard CMOS processes, this thesis aims at the design of three specific topics in particular. With regard to the contents of the thesis, first of all, the theory of linear-in-dB automatic gain control (AGC) is discussed. In succession, a linear-in-dB variable gain amplifier (VGA) is mentioned. The implementation of a Feed-forward Output Swing Prediction AGC featuring a Prediction Parallel-Detect Single-Store Peak Detector (PDSSPD) and a High Input/Output Swing VGA is also described. Furthermore, a digitally programmable gain amplifier for a ZigBee wireless receiver is also mentioned. In response to the advent of CMOS-compatible high voltage tolerant Bipolar-CMOS-DMOS (BCD) process, an operational amplifier for level converting operation is disclosed. A 60-V Li-ion battery charger has also been proposed, along with a novel battery charge mode, namely, the incremental charge (IC) mode. Practical issues regarding the high voltage tolerant BCD process is also briefly discussed. Finally, a backplane transmitter featuring pre-emphasis and a receiver utilizing decisive feedback equalization (DFE) designed for CIC MorPack technology are presented. When packaged in a Leadless Ceramic Carrier (LCC) package, the transmitter can transmit up to 500 Mbps and the receiver can receive up to 125 Mbps, both through DuPont connectors without impedance matching.
14

Medical staff's recognition and emphasis on TQIP and its impact on healthcare quality in Taiwan

Tseng, Gueng-Ing 23 November 2007 (has links)
Recently, the health care services in Taiwan have rocket booming both in scale and in quantity. The competition among these health care service organizations are forging these facilities into cost effective systems through, promoting various quality control programs, elevating clinic & treatment capabilities, and improving quality of health care services. This study is to investigate how the medical staffs¡¦ recognitions are, and at what priority to initiate proper actions, while promoting Taiwan Quality Indicator Project in a medical center in southern Taiwan and its relative influences in clinic quality. The method is to conduct a survey of four hundred and twenty eight (428) clinic personnel from six (6) departments ¡V Emergency Dept., Surgery Dept., Intensive Care Unit, Obstetric & Gynecology Dept., Nursing Dept. and, Psychlogical Dept. - of the sampled medical center. A total of 428 copies of inquires were released to the sampled clinic personnel on April 1st, 2007; and those were collected back with a returning rate of 86.9%, on April 30th, 2007. Software package SPSS is applied to analyze the distribution of this survey. And methods of chi-square test, ANOVA are used to investigate the influence to health care quality caused by various different personnel characteristics. Conclusions are as follows: 1.The results demonstrate that 52.4% clinic personnel do not fully understand about TQIP. And among them, Nurses, Resident Doctors and, Chief Doctors are the most. While the clinic personnel completely understand TQIP are mostly Registered Nurses and, Attending Physicians. Obvious differences of understanding about TQIP exist, apparently, per different job titles. 2.The importance of TQIP given by the sampled persons is 4.08, categorized as ¡¥important¡¦. Without discrimination, same importance is indicated by all clinic personnel of different job titles. 3.The index/indicators of TQIP are accepted as capable to evaluate health care quality of their unit/department by 64.1% of the sampled personnel. Thus, the index/indicator chosen are adequate and proper. 4.69.4% of sampled clinic personnel agree that quality improvement policies are prepared and are realized in their unit/department. The results of TQIP in those units/departments illustrate positive quality improvements of health care service. 5.On the whole, after participating TQIP, the sampled hospital finds quality improvement in health care. The positive influences in health care are, sequentially from more to less, elevating concept of quality control, understanding quality status of the hospital, assessing quality problem of clinic service unit/department, improving health care service quality, improving capabilities in problem solving, improving operation processes & procedures, improving in methods of data collection, better team work, accelerating information computerization in the hospital, better communication and coordination among unit/department. 6.The sampled hospital standardized the ¡§Monitoring & Testing Procedures of Health Care Quality Index/Indicators¡¨. The details of operation procedures are posted on the intra-net for unit/department¡¦s inquiring and following. Annual data of index/indicators collected are to be introduced in the hopistal¡¦s MIS System for top managements¡¦ inquiry and references. Five (5) recommendations after analyses: 1.The sampled hospital is graded as medical center hospital holding the responsibilities in education. The education in quality control shall be promoted and continuously initiate improving programs in health care quality, due to in depth knowledge affects the attitude and behavior in health care quality performed. 2.Clinic personnel have heavy work loads. Computerized Index/Indicator related information should be easy to access on the information system. Thus, the programmer/engineer of the information center shall simplify the procedures/ processes as year planning even the resources are limited. 3.Unit/department requires specific person to handling index /indicator. Thus, the department management can lead daily jobs down to the ground, actively involving in quality improvement programs within the unit/department. 4.One of the opinions of ¡¥not important¡¦ category is that ¡¥no solid benefit for doctors following up index/indicators. The suggestion to top management is to elevate the morale by rewarding the participants with monetary efficiency bonus instead of just merits. 5.It is very complicated about how to increase knowledge and consensus in health care quality. Besides sufficient communication with clinic personnel, man-power integration, and continuous education and on job training, problem solving and quality improvement programs are necessary. Learning from the successful experience of other health care facilities, within the country or from foreign countries, is also an efficient method.
15

INITIAL POSITION PHONEMIC CONFUSIONS OF CERTAIN CONSONANTS AND THEIR RELATIONSHIP TO DECODING

Levy, Jack Gabe, 1918- January 1973 (has links)
No description available.
16

Examining the Relationship Between Academic Optimism and Student Achivement: A Multi-Level Approach

Hallmark, Bryan S 02 October 2013 (has links)
Academic optimism is a relatively new construct that combines collective efficacy, academic emphasis, and faculty trust in students and parents. The cumulative measure represents a robust picture of the social interactions within a school that influences the beliefs, behaviors and emotions of organizational members. Academic optimism has been established as a predictor of student achievement controlling for student socioeconomic status. However, past studies have not included student ethnicity in statistical models utilized to test the effect of academic optimism on student achievement, even though research and state achievement data show gaps among students of color and Anglo students that are just as substantial as those identified along socioeconomic. Additionally, there was a need to determine if academic optimism is simply a product of school context or if there is additional variance left to be explained by psychosocial interactions within schools. Therefore, the intent of this study was threefold: first, examine the relationships between the theoretical underpinnings of collective efficacy, academic emphasis, and faculty trust in students and parents; second, produce a more rigorous test of the effect of academic optimism on student achievement by including student ethnicity in addition to other student background characteristics; and third, determine to what magnitude school context explains a schools level of academic optimism. The author utilized multi-level analysis to test the relationship between school academic optimism and student achievement controlling for student ethnicity, socioeconomic status, previous achievement and school size within a new sample. The relationship between school academic optimism and school context was tested by employing multiple regression analysis. In a sample of 10,464 students nested within 97 elementary schools the author was able to determine that academic optimism is a positive predictor of student math and reading achievement. Furthermore, academic optimism is capable of mediating the negative relationships existing between both low socioeconomic status (SES) and student of color status and student achievement. Additionally, the studied revealed that only 52% of the variance in school level academic optimism is determined by school context.
17

SSE: Improving Task 2 and Task 3 Scores by Planning, Teaching, Assessing the Subject Specific Emphasis

Rock, Terryl 28 March 2019 (has links)
No description available.
18

The Cultural Programs of the WPA: with Special Emphasis on the Federal Art Project

Lashbrook, Lawrence G. 01 May 1971 (has links)
The number of Americans who did not suffer in some way from the depression of the thirties was small, indeed. This was a period of great travail for the United States and the entire world. However, it was also one of the most interesting and innovative periods in American history. President Franklin D. Roosevelt exhibited forceful and quick reactions to the economic and social problems besetting the nation. Not the least of these measures of mitigation was the Works Projects Administration and the inclusive WPA cultural projects. These projects contained an art program, a writers' program, a theatre program and a music program. The contributions of these programs were varied. A great deal of monetary value was produced by such respected Americans as Jackson Pollock, Mark Rothco, Stuart Davis, Richard Wright and Vardis Fisher. Monetary return did not comprise the major value or design of the programs. The first priority centered on providing useful employment to unemployed and creative citizens. This employment program was unique in that it strived to place the unemployed artist in a position in which he could use his artistic talent. The sculptor was not forced to dig ditches or lay pipe. He was given a job that utilized his true vocation, such as work on Mount Rushmore or sculptures for a children's playground, or even the instruction of sculpturing to an eager class of adults. This was probably where the real value of the program became patent. The artist was able to regain his self-respect and continue in his work. The state of Utah presented a useful example of the worth of WPA cultural programs. In a state as small and rural as Utah, a viable and workable program was effected. Therefore, it is reasonable to assume that if the cultural programs were of value to Utah, the significance to the larger states and the rest of the nation cannot easily be dismissed.
19

Systematics of Multillidae (Hymenoptera) With Special Emphasis on Dasymutilla and Their Allies

Williams, Kevin A. 01 May 2012 (has links)
Velvet ants are solitary wasps that have been virtually ignored in the past. Although over 4200 species have been described, fewer than 10 articles are published on these wasps each year. Their research potential is hindered by lack of phylogenetic and taxonomic data and lack of interest in the scientific community. In this dissertation, I sought to overcome the hindrances to mutillid research with a holistic systematic research model. By reconstructing phylogenies using molecular methods and correcting taxonomy based on the phylogenetic reconstructions, I was able to diminish the barriers to velvet ant research while concurrently presenting broadly interesting hypotheses. I applied this model to multiple hierarchical levels within the most widely studied velvet ant genus, Dasymutilla, and its allies. Molecular phylogenetic reconstructions, particularly those using the internal transcribed spacer units of ribosomal DNA (ITS1 and ITS2), were effective under Bayesian criteria. My results reveal the utility of velvet ants for studying biogeography and mimicry. I specifically determined that velvet ants dispersed between North and South America prior to the Great American Biotic Interchange and members of the genus Dasymutilla form the world’s largest known Müllerian mimicry complex. Taxonomic problems in Dasymutilla and their allies are addressed in the remaining sections of the dissertation. Overall, 35 species were treated taxonomically. Seven new sex associations were discovered, 22 species were recognized as synonyms, and nine new species were described. In each taxonomic treatment, hypotheses concerning biogeography, mimicry, and host selection were discussed briefly.
20

The Impact of Supervisors' Race and Years of Experience on The Focus of Supervision

Hudson, Denita N. 02 August 2007 (has links)
No description available.

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