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 20 of 1830 for “"study design"”.
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Improving Non-nutritive Sweetener Study Design Methodology
… for added sugars. NNS are difficult to study due to the inability to accurately measure the amounts individuals consume, as well as limitations in study design and methods, including reliance on observational study designs, the use of diet soda as a proxy of total NNS intake, and the …
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Simulation and optimization tools to study design principles of biological networks
… of important biological networks. However, the design principles governing the construction and operation of these networks remain mostly unknown. To discover design principles in these networks, we investigated and developed a set of computational tools described below. First, we looked into …
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Analyses of Two Aspects of Study Design for Bioassessment With Benthic Macroinvertebrates: Single Versus Multiple Habitat Sampling and Taxonomic Identification Level
… There are strongly divided opinions about study design, sampling methods, laboratory analyses, and data analysis. Two issues that are currently being debated about study design for bioassessment in streams were examined here: 1) what habitats within streams should be sampled; 2) and is it …
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Development, implementation and impact of Phlebotomy training on blood sample rejection and Phlebotomy knowledge of primary health care workers at selected primary health care facilities in Cape Town: a quasi-experimental study design
… develop a tool for blood sample acceptability. Study Setting: Two Community Health Centres (CHCs) and two Community Day Centres (CDCs) in Cape Town. Methods: A quasi-experimental study design. Results: The sample rejection rate was 0.79% (n= 60) at CHC A, 1.13% (n= 45) at CHC B, 1.64% (n= 38) at …
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Perceptions of Blended Learning: A Case Study on Student Experiences in an Advanced Placement Macroeconomics Course
<p>The purpose of this study was to use a case study design to examine the impact of a blended learning instructional model on students in an Advanced Placement (AP) Macroeconomics course. Using an instrumental case study design, the researcher investigated blended learning and students’ …
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The development of a modified 2 pair Dichotic Digit test recorded in a South African English Accent
… CAPD may remain undiagnosed, misdiagnosed or designed management plans may be inappropriate as they arose from invalid tests. This study employed a developmental study design in order to adapt an existing 2-pair dichotic digit test (2-pair DDT) to a South African English accent to better suit …
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THE EFFECTS OF AGE AND HETEROCHROMATIN ON FREQUENCIES OF ACQUIRED CHROMOSOMAL ANEUPLOIDY IN UNCULTURED HUMAN LEUKOCYTES
… (FISH) technology has enabled investigators to study interphase cells, thereby overcoming problems inherent with the study of metaphase spreads for acquired aneuploidy assessment. Despite all the advantages of this technique, there are some limitations that could be misleading when scoring …
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Scientific inquiry in high school science learning: Collaborative research activities applying scientific visualizations
This research utilized a multi-case, longitudinal study design to examine the theory development activities and high performance tool use of four teams of high school students and teachers. The science learning and research activities of these four high school teams were followed from the start of …
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New technology, new pedagogy? : an activity theory analysis of pedagogical activity with computers
… this question an exploratory multiple case study design allowed for the collection of data in the form of questionnaires interviews and, primarily classroom observations over the course of a year in four disadvantaged schools.
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The Doctoral Journey: A Case Study of One Student's Experience
The purpose of this qualitative study was to gain an in-depth understanding of one doctoral student's experience in working toward a Doctor of Philosophy (Ph. D.) with emphasis on the process rather than results. The study grew out of the experience of one doctoral student who was unable to …
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Current issues in the treatment of sexual offenders
… empirical research (N =322) and a single case study. Chapter 1 reviews the efficacy of sex offender treatment in relation to study design, treatment type, and treatment setting. Results indicate a positive effect of treatment in reducing both sexual and general recidivism for treated versus …
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Profiling medulloblastoma and juvenile pilocytic astrocytoma brain tumours in a South African paediatric cohort
… studies in an African context. The study design in this thesis takes a systematic approach and is structured into MB and JPA biochemical characterisation followed by 4 studies of their respective proteomic profiles. The study design involved creating appropriate patient cohorts and …
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Assessing the impact of a waiting time survey on reducing waiting times in primary care clinics in Cape Town, South Africa
… recommendations occurred was unknown, hence a study was conducted to assess the impact of the previous waiting time survey recommendations on stimulating efforts to reduce waiting times and whether waiting times had reduced. Methods: A cross-sectional analytical study design assessed the …
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Walking Speed, Gait Asymmetry, and Motor Variability
Study design is among the most fundamental factors influencing collection and interpretation of data. The purpose of this study is to understand the effect of design choices by evaluating gait mechanics in healthy control participants using three primary objectives: 1) determine the repeatability …
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The relationship between self-efficacy theory and exercise compliance in a cardiac population
This investigation utilized a cross-sectional study design in order to examine the relationship between self-efficacy theory and exercise compliance in a cardiac population. The study sample was comprised of 20 females and 118 males who had completed a Phase II cardiac rehabilitation program. Of …
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Characteristics of Principalship Candidates and Their Relation to Selection Patterns in Eight Illinois Communities' Public School Districts
The focus of this study is directed to shedding light on whether a pattern exists in the selection of personnel for the principalship role among eight selected Illinois public school districts. The need for an in-depth review of data over a ten-year period, 1972-1982, dictated the utilization of an …
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Genetic risk factors for anterior cruciate ligament ruptures
… association approach following a case-control study design to identify specific sequence variants (single nucleotide polymorphisms, SNPs) within these candidate genes which may predispose individuals to ACL ruptures. Candidate genes (COL1A1, COL5A1 and COL12A1) were selected based on the …
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Time series analysis for evaluation of antimicrobial stewardship interventions
… systematic review of the quality of design, analysis and reporting in 107 studies identified in a recent Cochrane systematic review of antimicrobial stewardship interventions for hospital inpatients was performed. An uncontrolled before-after design was used to evaluate the …
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The Effect of a Responsive Parenting Program on Maternal Perception of Child Temperament, Mother-Child Bonding, and Maternal Mood
… due to child sleep and settling problems. This study extends current knowledge of programs by examining improvements in maternal and child outcomes one week after completing a three to four night Residential Responsive Parenting Program at Tweddle Child and Family Health Service; whether …
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