Plotting marriage : Dickens, divorce and the failed-marriage plot

Hager, Kelly Jeanne 1992 국내박사

Lifetime estimation of aluminum wire bonds based on computational plasticity

Hager, Christian Swiss Federal Institute of Technology Zu@rich 2000 국내박사

Effekte von Analgetika auf das spontane Elektroenzephalogramm des Menschen

Hager, Frank Universitat Hamburg 1988 국내박사

Natural resource management for enhancing agricultural productivity in East Gojjam zone, Amhara region, Ethiopia

Gebremariam, Hagere Legesse Graduate School of Government, Business and Entrep 2022 국내석사

The research looked at how natural resource management influences agricultural productivity in Ethiopia's Amhara region, east Gojjam zone, using sample smallholder farmers. The impact of farmer demographic, social, and economic variables on enhancing agricultural output was investigated in this study. Independent t-test, ANOVA, correlation and multiple regression analysis was used to achieve the study's objective. The results of this study demonstrated that adaptation of soil and water conservation, land size, use of irrigation, agricultural training, and the availability of a family labor force all have a positive significant association with increased agricultural productivity. As a result of this research, it is recommended that the government improve the quality and accessibility of agricultural training on the selection and application of both physical and biological soil and water conservation technologies, as well as building water harvesting structures, providing irrigation equipment, and the government's support of smallholder farmers through the provision of farm equipment, the introduction of new technologies, and connecting farmers with microfinance institution to access credit services. 연구에서는 농업 생산량 증대에 대한 농민의 인구통계학적, 사회적, 경제적 변수의 영향을 조사하였다. 독립표본 t-검정, 분산분석(ANOVA), 상관 관계 및 다중 회귀 분석을 사용하여 연구 목적을 달성했다. 이 연구의 결과는 토양 및 물 보존의 적응, 토지 크기, 관개 사용, 농업 훈련, 가족 노동력의 가용성 모두가 농업 생산성 증가와 긍정적인 의미가 있는 연관성이 있음을 보여주었다. 이 연구의 결과에 의하면 정부는 물리적 및 생물학적 토양과 물 보존 기술의 선택 및 적용, 집수 구조물 건설, 관개 장비 제공 뿐만 아니라 농기구 제공, 신기술 도입, 소액 금융 기관과 농민을 연결하여 신용 서비스를 제공함으로써 소규모 자작농을 지원해야 한다.

Developing standards for undergraduate university construction education internship programs

Hager, Cassandrea Jane Texas A&M University 2005 해외박사(DDOD)

Personally observed variability among construction education internship programs prompted this investigation. The schools of construction that form the Associated Schools of Construction (ASC) encourage its members to provide curricula that produces qualified professionals for the construction industry. There is agreement within ASC that a practical component along with classroom curriculum is needed for construction students' education (Senior, 1997). Although construction programs have different ways of accomplishing this experiential component, most do have some sort of internship or cooperative program (Chapin, et al., 2003). Construction internships vary greatly from one program to the next---in length, supervision, academic deliverables, and whether credit is earned. No common set of internship field experience standards or best-practices guidelines have been developed for construction education. This study was divided into three subproblems. Subproblem One describes the status of construction internship programs currently administered in selected American undergraduate universities. Subproblem Two identifies elements that students, companies and schools perceive to support valuable, satisfying internship experiences. And, Subproblem Three incorporates findings from Subproblems One and Two to identify common elements to provide a structure for construction internship programs, in order to develop a set of guidelines for construction education internship programs. Three constituencies were surveyed: (1) university undergraduate construction programs, (2) construction companies, and (3) students of the respective construction programs. The school survey utilized ASC membership rosters to survey 91 schools, with 56 participating (62%). The company survey randomly sampled 200 of the Top 400 U.S. Construction Companies listed in Engineering News Record's ENR Sourcebook 2003, with 75 participating (37.5%). The student survey had 31 students from eleven schools in nine different states voluntarily participate. Univariate analyses on only one variable at a time served to describe the survey population, and by extension, the population from which the sample was selected. The data were analyzed utilizing frequency percentages and summary averages including mode and mean. Based on the findings of this study, it was concluded that a set of "best-practices" guidelines were needed for construction education internship programs. A set of best practices guidelines for developing construction education internship programs are provided.

Mentoring relationships in doctoral education: Doctoral students' socialization into communities of practice

Hager, Mark James University of Michigan 2003 해외박사(DDOD)

This dissertation investigated mentoring relationships between doctoral students and their faculty mentors in a school of education. The goal was to understand the experiences and expectations that guide mentors' and students' practices to learn what roles mentoring plays in doctoral students' socialization as educational researchers. Most theories of mentoring are based on career success models, yet they do not capture the unique developmental character of doctoral education. A second goal was to test the utility of Lave and Wenger's (1991) theory of situated learning, legitimate peripheral participation (LPP), as a model for mentoring relationships in doctoral education. In-depth interviews with ten exemplary mentors and 24 of their students from one school of education were conducted to learn the “in-vivo” workings of these relationships. Constant comparative methodology guided the inquiry. A multi-step content analytic procedure was used to analyze the data and generate descriptive themes. Four themes grounded in LPP emerged to describe the role faculty-student mentoring plays in doctoral students' socialization into communities of practice: how to be an academic; collaborative participation in the practices of the educational research community; communicating with professional communities; becoming successful members of the educational research community. LPP accurately described the students training as educational researchers, yet it was not adequate to describe the affective side of the relationships. Kram's (1985) theory of psychosocial mentoring was used to understand the contribution psychological and social support made to these students' socialization. Participants' comments supported Kram's (1985) theory. Four psychosocial functions were crucial to students' overall experience of their mentoring relationships: role modeling; acceptance and confirmation; counseling; and friendship. There were also obstacles to the relationships which the theory of LPP did not anticipate. Partially skilled mentors, mismatched research interests, and heavy demands on faculty mentors' time impeded students' participation and learning. To ameliorate these challenges, students crafted multiple mentoring relationships with other faculty and researchers. Conceptualizing mentoring relationships in a community of practice offers students multiple role models, potential theory communities, and people to fill mentoring roles.

Secondary ion emission from single massive gold cluster impacts

Hager, George Joseph Texas A&M University 2007 해외박사(DDOD)

Secondary ion mass spectrometry, SIMS, is one of the most versatile surface analytical techniques. The significant parameter determining the performance of SIMS is the secondary ion yield. Atomic projectiles, traditionally used in SIMS, are an inefficient method to desorb and generate secondary ions. The use of poly-atomic projectiles, such as (CsI)nCs, Au3 , SF5 and C60, has been demonstrated to be an effective means to enhance secondary ion yields. Still larger secondary ion yields can be obtained with massive gold clusters, specifically Au400 4+. Secondary ion yields from organic targets approach unity and are in excess of unity for selected inorganic targets. This dissertation is a first study of the secondary ion emission characteristics resulting from surface bombardment of keV Au400. The enhanced secondary ion yields from these massive clusters resulted in a need to detect isobaric secondary ions. An eight-anode detector was designed, built and implemented to study secondary ion emission resulting from massive projectile impacts. Secondary ion yield enhancements, resulting from use of the multi-anode detector, are reported along with secondary ion distributions for organic and inorganic targets. Au-adduct ions have been observed in mass spectra resulting form organic and inorganic targets bombarded by Au400. Data indicate that these adducts are a result of projectile/surface molecule interactions and not a product of Au implantation. Secondary ion yields of these adducts are reported. Although these adduct ion yields are an order of magnitude lower than the non-adduct ions, we have demonstrated their potential usefulness in analytical applications, such as examining surface homogeneity. Finally, these novel projectiles have been used to examine secondary ion emission from targets with different structural properties which have the same stoichiometry. In a comparative study, we have measured a significant difference in secondary ion emission and yields from the two systems, graphite and alpha-ZrP. Au400, at 136 keV, is effective in terms of secondary ion yield and secondary ion multiplicity enhancement. When used in the event-by-event bombardment/detection mode, the desorption volume has a diameter between 10-20 nm with and emission depth of approximately 5 nm, perturbing less than an attomole of analyte.

Management and interference potential of common waterhemp (Amaranthus rudis) in soybean (Glycine max)

Hager, Aaron Gregory University of Illinois at Urbana-Champaign 2001 해외박사(DDOD)

Field experiments were conducted in 1996 and 1997 to examine the influence of herbicide application timing and rate on efficacy of six soil-applied herbicides for common waterhemp control in soybean. Four weeks after soybean planting, herbicides applied preemergence provided 18% greater common waterhemp control than when herbicides were applied 5 weeks early preplant. Herbicide rate did not significantly influence common waterhemp control, but differences among the six herbicides were evident. Sulfentrazone controlled common waterhemp better and reduced its density more than other herbicides. All herbicides reduced common waterhemp density and dry weight more than the nontreated control. Field research was also conducted to determine if common waterhemp control is influenced by application timing and rate of acifluorfen, fomesafen, and lactofen. Herbicides applied at the early postemergence compared with the postemergence timing provided significantly greater common waterhemp control based on visual observations. Averaged across application rates and timings, lactofen provided greater common waterhemp control than acifluorfen or fomesafen. Imazethapyr provided 48% or less control of common waterhemp. No significant differences in common waterhemp dry weight were determined among the three rates of acifluorfen, fomesafen, and lactofen applied early postemergence. The highest application rates of fomesafen and lactofen reduced common waterhemp dry weight more than the lowest application rates applied postemergence. The highest application rate of fomesafen also reduced common waterhemp dry weight more than the intermediate application rate. Single degree of freedom contrasts indicated all herbicides reduced common waterhemp dry weight more than the nontreated control at each application timing. Field experiments were conducted during 1996, 1997, and 1998 to determine the common waterhemp interference period soybean could tolerate without reducing seed yield. Removal of common waterhemp interference 2 weeks after soybean unifoliolate expansion resulted in soybean seed yield equivalent to a season-long weed free control, but delaying common waterhemp removal longer than 2 weeks resulted in decreased soybean seed yield. Full season common waterhemp interference reduced soybean seed yield 31%. These results suggest soybean producers should implement common waterhemp management strategies prior to 4 weeks after soybean unifoliolate leaf expansion to reduce potential loss of soybean seed yield.

Constructing community: Youth arts and drama, federal funding policy, and social services

Hager, Lori L Arizona State University 2003 해외박사(DDOD)

This dissertation considers political, historical, and social factors that influence community youth arts and drama in the United States. Nonschool youth arts programs that link artists and arts organizations with community youth organizations are proliferating. Statistics show that youth spend only 26% of their time in school, and the arts have become part of a constellation of services offered by community youth organization as a strategy to fill the institutional gap during after-school time and to provide safe havens for “at-risk” youth. Community youth arts have been targeting “at risk” youth since the turn of the century when the United States Settlement Houses viewed the arts as a way to help reform troubled youth and “americanize” immigrant communities. The National Endowment for the Arts, as the sole federal support program for the arts in the United States, forwards an agenda that links youth arts with social service agencies, where arts goals are then determined by the goals and agendas of the nonarts partners. Partnerships between the National Endowment for the Arts and other federal agencies such as the Departments of Labor, Housing and Urban Development, and Juvenile Justice promote the arts as a form of social service, and which have a unique ability to reach and reform troubled youth. Research in youth arts focuses on nonarts goals, which drives policies that continue to link the arts and social service agendas. This dissertation examines the historical and political influences that have positioned the arts as a social service. The changing concept of “community” as it relates to youth arts practice is interrogated from a historical perspective. The influence of the NEA on youth arts programs and policies cannot be over-estimated, and this dissertation traces the emergence of arts education funding priorities from the establishment of the NEA in 1965 to its restructuring in 2002. It considers alternatives to viewing youth as dangerous and in need of reform, and presents research in support of community youth arts programs that help youth to create “bridging” social capital in community youth organizations that are necessary “third places” for youth in contemporary communities.

Avoiding the false negative: Placing students into mathematics courses according to their abilities

Hager, Margaret J University of Cincinnati 2005 해외박사(DDOD)

The purpose of this qualitative study was to examine the perceptions that students and advisors/administrators had regarding the mathematics placement process at a two-year branch campus of a large urban, mid-western university. Participants in the study were 20 advisors/administrators and 15 students. Qualitative data were collected from face-to-face, semi-structured interviews and focus groups, placement test observations, and placement test documents. The student participants were students who had taken the Compass/ESL RTM computer-adaptive math placement test and successfully completed a college level math course at the institution, as well as students who had just recently taken the test. The advisors/administrators all had some level of involvement in the mathematics placement process at the institution. Therefore, this research offered a unique opportunity to focus on the current mathematics placement process. The results suggested that students want and need an opportunity to practice before they take the test. This may encourage them to take the test more seriously. Furthermore, the use of an entrepreneurial placement testing system should require that the recommendations made by them as to the procedures for administering the test be followed. Finally, the institution is interested in implementing mandatory placement in mathematics. This would include a well-defined mathematics placement appeal process for students who believe they are not correctly placed by the test, as well as the use of multiple measures to determine the placement of students in a mathematics course.