Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"PWAS"”.
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Power and Energy Transduction In Piezoelectric Wafer Active Sensors For Structural Health Monitoring: Modeling and Applications
… basis for piezoelectric wafer active sensors (PWAS) in structural health monitoring (SHM). PWAS are studied in both theoretical and practical aspects. The research focuses on three areas: (I) modeling of PWAS power and energy transduction; (II) PWAS installation and durability study; (III) …
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Fundamental Studies In the Lamb-Wave Interaction Between Piezoelectric Wafer Active Sensor and Host Structure During Structural Health Monitoring
… variables that influence the interaction of PWAS with structure during activation of the transducer. This is a key feature needed to develop more power/energy efficient structural health monitoring (SHM) systems. SHM is the field of engineering that determines the health of a structure while …
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Poor, black and female : an analysis of South African print media framing of people living with HIV/AIDS
… the epidemic and people living with HIV/AIDS (PWAs). This dissertation investigates how two key lwge circulation English ianguage newspapers in South Africa frame PWAs. The research examines both the content of selected print media, Sunday Times and Daily Sun, and the context in which …
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Self report related to HIV/AIDS among Zululand University students
… attitudes towards AIDS and people with AIDS (PWAs), sexual behaviour, condom use as well as attitudes, beliefs and perceptions about condoms, the impact which perceived norms and self-efficacy have on condom use, sexual behaviour and AIDS preventative behaviour(APB). Results of the study have …
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Composite Structural Health Monitoring With Piezoelectric Wafer Active Sensors
… low-profile piezoelectric wafer active sensors (PWAS). PWAS utilize the piezoelectric principle to convert electric energy to mechanical energy or mechanical energy back to electrical energy. This type of sensor can be readily mounted on the existing structures or embedded into them during the …
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Structural Health Monitoring of Adhesively Bonded Joints With Piezoelectric Wafer Active Sensors
… unobtrusive piezoelectric wafer active sensors (PWAS) which are permanently affixed on the surface of the structure. PWAS can be placed in restrictive spaces, like in built-up aerospace structures. The surface-bonded PWAS can produce guided waves traveling parallel to the surface and could detect …
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Avaliação das Progressive Web Apps como solução digital para a monitorização das plantações de cajueiros: caso de Norte de Moçambique
… avaliar a adequação das Progressive Web Apps (PWAs) como uma solução digital para a monitorização das plantações de cajueiros no norte de Moçambique. A metodologia utilizada consistiu num estudo de caso que envolveu três fases principais, nomeadamente, a fase de análise das necessidades em …
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Coping strategies of community health workers providing home-based care for HIV/AIDS : a comparison of high & low burnout groups
… providing home-based care to people with AIDS (PWAs), draw on in response to stressful work experiences. Furthermore, the study explores whether different coping mechanisms are utilised by health care workers at different points on the burnout continuum. CHWs were selected from a community …
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Visualisation of dynamic flow processes using a novel pulsed multi-element hot-wire anemometer.
… some of the restrictions which apply to existing PWAs. It is shown that the transient heating and cooling characteristics of such an element is a function of the local convection rate and hence the local fluid velocity. Thus if the heating current is supplied in short duration pulses of constant …
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Factors associated with Death outside health facilities in Lusaka District
… the country. Public welfare assistance scheme (PWAS) is to be increased and publicised so that those who have problems of tlnanciai inaccessibility should be helped; also to improve on the diagnosis and treatment of those that go to the health facilities.
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DEVELOPMENT OF FATIGUE MODELS FOR COPPER TRACES ON PRINTED WIRING ASSEMBLIES UNDER QUASI-STATIC CYCLIC MECHANICAL BENDING
… copper (Cu) traces on printed wiring assemblies (PWAs) under quasi-static cyclic mechanical flexure, using experimental results from a set of three-point bending fatigue tests, finite element (FE) modeling of the stresses generated during the cyclic bending tests, and response surfaces (RS) to …
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A Structural Equation Model of the Influence of Personal, Behavioral, and Environmental Factors on the Writing Performance of First-year Students at a Selected Michigan Community College
… the Previous Writing Achievement Spreadsheet (PWAS), and the Writing Performance Spreadsheet (WPS). The Statistical Package for the Social Sciences (SPSS) was used to store and organize the data, and generate descriptive statistics. The research hypothesis was tested using structural equation …
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A descriptive study of the attitudes of doctors, working at clinics and day hospitals in the Cape Metropole to patients with HIV/AIDS
… and biases with regard to the treatment of PWAs.