In today’s competitive market, it is essential to be innovative and creative for an industry to sustain. Industry need to introduce new products to the market. Engineering idea generation plays a vital role in the development of new products. This research study is focused on the engineering idea generation. The representations of ideas have an important impact on the idea generation process. Design concepts may be represented in a variety of forms like sketches, physical models or computer based models. The goal of this research is to understand how these various representations affect design cognition. In this thesis, three studies showing the effects of two different representations in the idea generation process are presented. The first study focuses on the effects of physical models in engineers’ design cognition. This preliminary study investigates two different hypotheses: (1) Physical models supplement and improve designer’s mental models and (2) Physical models induce design fixation. The results show that physical models supplement the designer’s mental models but fail to enhance them. No evidence of design fixation is observed. The second and third studies investigate the effects of computer-based idea generation software on design cognition. The research questions investigated in this study are: (1) How does the use of this software tool assist design cognition? (2) How can the software interface be improved so that designers can generate ideas more easily? To answer these questions, a between-subjects idea generation experiment is conducted. In the experiment, the participants are asked to generate ideas to solve a design problem with and without the software. The results show that participants who generated ideas with the help of the software tool have less quantity of ideas compared to the control group. This may be due to the design fixation induced by the concepts presented. In the third study, the opinions of the participants for the improvements of the software interface are collected. Results show that participants do not have any preference of one way of clustering the concepts over the other. The results of this study also provide creative input for the future improvement of the software.

<p>Within the field of medical informatics, patient medical records are the sole source of information for dealing with clinical activities concerning the documentation, care, progression, and ongoing interactions between the patient and clinicians. Electronic or computer-based patient records (CPRs) have had a presence within health care in some form and magnitude for the past thirty years yet only recently have been incorporated in health care to a larger extent. Due to the wide variation of professions in health care, there is a problem of CPRs not being able to fulfill all the possibilities and demands the individual professionals need, since many CPRs are designed as a generic system, to be used across multiple professions.</p><p>The focus of this report is on the utilization of a generic CPR in a specialist clinical setting, i.e., a physical therapy clinic, and to analyze how the therapists utilize the different components and features in a generic CPR. The purpose of the evaluation was to investigate how viable the CPR was as a documentation tool and to which extent it supported the therapists in their clinical, documentation and delivery of care activities. In this study, a total of seven physical therapists participated in a post-usage evaluation of an existing CPR. The evaluation was achieved by interpretative research with open-ended interviews and observations. The results of the study showed that despite some shortcomings, the generic CPR was an effective tool for the clinicians, not only as a documenting aid, but also enabling them to quickly research the patients' prior diagnosis and treatment history, plan for future care, support decision-making and to communicate with other professionals so as to coordinate treatment and planning.</p>

When an exam is administered across dual platforms, such as paper-and-pencil and computer-based testing simultaneously, individual items may become more or less difficult in the computer version (CBT) as compared to the paper-and-pencil (P&P) version, possibly resulting in a shift in the overall difficulty of the test (Mazzeo & Harvey, 1988). Using 38,955 examinees' response data across five forms of the National Nurse Aide Assessment Program (NNAAP) administered in both the CBT and P&P mode, three methods of differential item functioning (DIF) detection were used to detect item DIF across platforms. The three methods were Mantel-Haenszel (MH), Logistic Regression (LR), and the 1-Parameter Logistic Model (1-PL). These methods were compared to determine if they detect DIF equally in all items on the NNAAP forms. Data were reported by agreement of methods, that is, an item flagged by multiple DIF methods. A kappa statistic was calculated to provide an index of agreement bet ween paired methods of the LR, MH, and the 1-PL based on the inferential tests. Finally, in order to determine what, if any, impact these DIF items may have on the test as a whole, the test characteristic curves for each test form and examinee group were displayed. Results indicated that items behaved differently and the examinee's odds of answering an item correctly were influenced by the test mode administration for several items ranging from 23% of the items on Forms W and Z (MH) to 38% of the items on Form X (1-PL) with an average of 29%. The test characteristic curves for each test form were examined by examinee group and it was concluded that the impact of the DIF items on the test was not consequential. Each of the three methods detected items exhibiting DIF in each test form (ranging from 14 items to 23 items). The Kappa statistic demonstrated a strong degree of agreement between paired methods of analysis for each test form and each DIF method pairing (reporting good to excell ent agreement in all pairings). Findings indicated that while items did exhibit DIF, there was no substantial impact at the test level.

This study used explanatory mixed methods to examine the effects of two computer-based reflection writing scaffolds, question prompts and writing process display, on preservice teachers’ levels of reflection in their online reflective journal writing. The scaffolds were embedded in a system simulating the Professional Accountability Support System Using a Portal Approach (PASS-PORT). The outcome measure was the level of reflection achieved in participants’ writing. The researcher collected data at the College of Education of a major southern university in the United States. Participants were undergraduate students enrolled in a technology integration course in fall 2007. Sixty-five preservice teachers participated in quantitative phase of the study; sixteen out of the 65 preservice teachers were purposefully selected to participate in qualitative phase of the study. The majority of the preservice teachers were white females between the ages of 20-29 in their junior year. During the quantitative phase of the study, participants in control group and two treatment groups were randomly and evenly assigned to one of three different Web pages associated with their treatment conditions. The participants reflected on a critical incident that happened during their practical teaching. Two raters, blind to the participants’ treatment conditions, coded the highest level of reflection achieved in their writing samples using the reflection rubric developed by Ward and McCotter (2004). The researcher employed ANOVA to assess the group differences in the highest level of reflection reached and in the length of the reflective writing in the number of words. The alpha level was set at .05 for all analyses. During the qualitative phase, the researcher conducted open-ended interviews with the participants as a follow-up to their reflection writing. The participants’ reflection writings and interviews served as data sources. Miles and Huberman's (1994) data analysis procedures guided the qualitative data analysis. The quantitative results indicated that computer-based scaffolds significantly enhanced preservice teachers’ levels of reflection in their online journal writing. Preservice teachers who used the scaffolds wrote longer reflection than those in the control group. Correlation analysis revealed that there was a positive relationship between the level of reflection and the length of journal writing. Three overarching factors emerged from the qualitative data analysis that explained how and why the computer-based scaffolds enhanced their reflective journal writing. The factors included (a) the specific requirements conveyed in the scaffolds; (b) the structure of the scaffolds; and (c) the use of the critical incidents to anchor reflective journal writing. How to improve preservice teachers’ critical reflection capability and skills remains an actively debated topic. Recent years have witnessed an emergence of research and development in Web-based educational systems to help prepare highly qualified teacher candidates. However, the articulative/reflective attribute of meaningful learning does not seem to be evident in most of these systems. Although there is considerable research on the potential for embedding scaffolds in technology-enhanced learning environments, mechanisms intended to facilitate reflective practice in such environments also seems to be lacking. In order to help fill this gap, it is hoped that the analyses and results of the current study can be used as a building block for research on how to leverage the affordances of computer-based scaffolds to enhance preservice teachers’ reflective practice in technology-enhanced educational systems.

Although school leaders receive coursework and some practicum experience, there are gaps in their preparation that can only be filled on the job. Because the decisions made by new educational leaders are of great consequence to themselves and their school communities, an important goal should be the sharing of knowledge and support amongst a community of peers. This work reviews the challenges facing new administrators, critically reviews the training of educational administrators in Ontario, and recommends an in-service community method to supplement the support received by new administrators in their first several years. This document begins with an examination of relevant research literature in leadership development, online communities, the nature of expertise, and technology-enhanced learning with technology. One outcome of this review is a set of “knowledge dimensions” that are important to the development of leadership expertise. The dissertation then examines a three year journey of an online community of educational administrators who share in their journey toward expertise. The e-mails from the community were analyzed according to their function within the community and their relevant domain content. Of particular interest was the question of how such e-mail exchanges allowed members to develop in all five dimensions of school leadership knowledge. A coding of e-mail threads revealed that all dimensions of leadership knowledge were represented in the content, and that the quality of e-mails improved in both content as well as knowledge building practices over the three years. The growth of the community as a whole and of individual members is examined through a set of individual case studies. Finally, the dissertation closes with a discussion of the future of this community, as well as the prospects that such an approach could be applied more widely in support of new school leaders.

Although school leaders receive coursework and some practicum experience, there are gaps in their preparation that can only be filled on the job. Because the decisions made by new educational leaders are of great consequence to themselves and their school communities, an important goal should be the sharing of knowledge and support amongst a community of peers. This work reviews the challenges facing new administrators, critically reviews the training of educational administrators in Ontario, and recommends an in-service community method to supplement the support received by new administrators in their first several years. This document begins with an examination of relevant research literature in leadership development, online communities, the nature of expertise, and technology-enhanced learning with technology. One outcome of this review is a set of “knowledge dimensions” that are important to the development of leadership expertise. The dissertation then examines a three year journey of an online community of educational administrators who share in their journey toward expertise. The e-mails from the community were analyzed according to their function within the community and their relevant domain content. Of particular interest was the question of how such e-mail exchanges allowed members to develop in all five dimensions of school leadership knowledge. A coding of e-mail threads revealed that all dimensions of leadership knowledge were represented in the content, and that the quality of e-mails improved in both content as well as knowledge building practices over the three years. The growth of the community as a whole and of individual members is examined through a set of individual case studies. Finally, the dissertation closes with a discussion of the future of this community, as well as the prospects that such an approach could be applied more widely in support of new school leaders.

A case study approach is used to examine two formative computer based assessments (CBAs) used in a School of Medicine and Faculty of Education at a Canadian university. Both assessments contained primarily scenario-based, multiple-choice items however the number of items and complexity was different. The formative CBAs were examined in terms of how feedback is provided to students, the effectiveness of different types of feedback, and the characteristics of items used for assessment. Feedback was channelled to students in one case, immediately following responding to an item and in the second case, at the end of a set of items. Feedback given to students immediately following an item was more effective given that the timing captured students’ construction of knowledge. The most favoured type of feedback provided additional information. Students also indicated that feedback using a live internet link to direct them to a resource would be acceptable. Although feedback that simply stated a response was correct or incorrect was previously shown to be ineffective, students from the School of Medicine indicated this type of feedback was acceptable for low cognitive items. In both case studies, students reported that more items were required and in one case study, students recommended these items be added at the higher end of the cognitive scale. / Thesis (Ph.D, Education) -- Queen's University, 2009-01-28 13:55:37.823

Increased stress is a continuing problem in our present world. Especiallynegative stress could cause serious health problems if it remainsundiagnosed/misdiagnosed and untreated. In the stress medicine, clinicians’measure blood pressure, ECG, finger temperature and breathing rate during anumber of exercises to diagnose stress-related disorders. One of the physiologicalparameters for quantifying stress levels is the finger temperature that helps theclinicians in diagnosis and treatment of stress. However, in practice, it is difficultand tedious for a clinician to understand, interpret and analyze complex, lengthysequential sensor signals. There are only few experts who are able to diagnose andpredict stress-related problems. A system that can help the clinician in diagnosingstress is important, but the large individual variations make it difficult to build sucha system.This research work has attempted to investigate several artificial Intelligencetechniques to develop an intelligent, integrated sensor system for diagnosis andtreatment plan in the Psychophysiological domain. To diagnose individualsensitivity to stress, case-based reasoning is applied as a core technique to facilitateexperience reuse by retrieving previous similar cases. Further, fuzzy techniques arealso employed and incorporated into the case-based reasoning system to handlevagueness, uncertainty inherently existing in clinicians reasoning process. Thevalidation of the approach is based on close collaboration with experts andmeasurements from twenty four persons used as reference.Thirty nine time series from these 24 persons have been used to evaluate theapproach (in terms of the matching algorithms) and an expert has ranked andestimated similarity which shows a level of performance close to an expert. Theproposed system could be used as an expert for a less experienced clinician or as asecond option for an experienced clinician to their decision making process. / Integrated Personal Health Optimizing System (IPOS)

There is currently an international shortage of Audiologists (McIntyre, 2010). Audiology is a professional degree undertaken at a postgraduate level at most universities around the world. Students have training in anatomy and physiology, hearing aids, cochlear implants, electrophysiology and acoustics; combined with a clinical component to the course. The clinical component is undertaken throughout the entirety of the course and involves a mixture of observation and supervised clinical practice in a variety of settings. Clinical training often begins with students crowded around a single piece of equipment, such as an audiometer for testing puretone-hearing thresholds or by pairing up and simulating a hearing loss. This process creates time and access constraints for students as it restricts their ability to practice performing audiometry, particularly if there is a shortage of equipment, and also limits their exposure to a wide variety of hearing loss pathologies. The potential for universities worldwide to use Virtual Reality and Computer Based Simulations to provide Audiology students with basic clinical skills without relying on extensive support from external clinics warrants further investigation. In particular, it needs to be determined whether Audiology students value these simulations as a useful supplement to their clinical training, and whether the use of these simulations translates into measurable improvements in student abilities in real clinical placements. A computer based training program for Audiology students developed at the Human Interface Technology Lab (HITLAB) New Zealand is evaluated in this study as an educational tool at the University of Canterbury, New Zealand. The present study aims to determine if a sample of twelve first year Audiology students felt their interactions with Virtual Patients improved their ability to interact with clients and perform masking which is often part of a basic audiometric assessment for a patient with hearing loss. The study measures the students’ competency in performing masking in puretone audiometry on the Virtual Patient and then on a patient in a real-world setting to see whether the Audiology Simulator training tool improved the student’s basic audiometry skills (a training effect) and whether these skills were maintained after a period of four weeks (a maintenance effect). Statistical analysis is applied to determine any training and maintenance effects. Students also gave subjective feedback on the usefulness of the simulator and suggestions for ways in which it could be improved. Results indicated that there was no statistically significant training effect between students that had used the Audiology Simulator and those that hadn’t. Once all students had used the Virtual Patient there was an overall maintenance effect present in that student’s scores stayed the same or improved even for those students who had not used the Virtual Patient for a period of time. Students overall reported that they found the Virtual Patient to be ‘Moderately Useful’ and had many recommendations for ways in which it could be improved to further assist their learning.The present study indicates that computer based simulation programs like the Virtual Patient are able to present and simulate realistic hearing losses to an acceptable level of complexity for students studying in the field of audiology and that the Audiology Simulator can be a useful and complementary training tool for components of audiological clinical competence, such as puretone audiometry and masking.

International studies of reading achievement demonstrate that significant inequalities in reading outcomes continue to exist among some of the world’s wealthiest countries, despite strong investment in initiatives directed towards raising literacy achievement for all children (United Nations Educational, Scientific and Cultural Organisation—UNESCO, 2009; United Nations Children’s Fund—UNICEF, 2010). One approach towards the elevation of reading achievement is to investigate how key predictors of reading success are incorporated into everyday classroom literacy practices. Phonological awareness (PA) is widely recognised as a powerful predictor and underlying precursor to early reading success for both typically developing and at-risk readers (Al Otaiba, Kosanovich, & Torgesen, 2012; Blachman, Ball, Black, & Tangel, 2000; Goswami, 2001; Pressley, 2006). A majority of research demonstrating the benefits of PA to literacy growth has been conducted under controlled research settings outside of the classroom environment (Ehri, Nunes, Willows, Schuster, Yaghoub-Zadeh, & Shanahan, 2001; Gillon, 2000a, 2005; Gillon & McNeill, 2009), and thus less is known about whether such benefits hold true when integrated into the heterogeneous classroom setting. For this reason, four experiments reported in this thesis investigated whether PA can be efficiently and effectively integrated into the classroom literacy programme with the overarching aim of raising reading achievement and equalising reading outcomes for the majority of children in the first year of formal education. In the first experiment (reported in Chapter 3), time-efficiency and congruency of scores between a computer-based PA screening and monitoring tool (described in Chapter 2) and a paper-based equivalent were examined. Thirty-three children aged between four years 10 months and five years zero months participated in the study, 12 of whom presented with moderate-severe speech delay (MSD). Participants were randomly allocated to either Group A or Group B experimental assessment conditions. A crossover research design was employed where Group A received the paper-based version of the PA assessment followed two weeks later by the equivalent computer-based assessment (CBA). Group B received the same assessments but in the reverse order of delivery. That is, the computer-based PA assessment first followed two weeks later by the paper-based counterpart. Results demonstrated that: 1) the CBA generated comparable scores to the paper-based equivalent for both children with typical development and children with MSD, and 2) CBA took 31 per cent less time than paper-based administration. These results demonstrate that CBA can provide educators with a time-efficient approach to the screening and monitoring of PA development in the classroom while maintaining equivalency of scores with paper-based testing. Having established the time-efficiency of CBA, the next step was to investigate the use of the computer-based PA screening and monitoring tool as part of the beginning classroom reading programme. In the second experiment (reported in Chapter 4), the influence of a short and intensive period of teacher-implemented classroom PA instruction on reading outcomes in the first year of education was investigated. One-hundred and twenty-nine children aged five-years participated in the study. Using a quasi-experimental design, thirty-four children in two classrooms received 10 weeks of PA instruction from their teachers, as an adjunct to the ‘usual’ reading programme. Ninety-five children from 10 classrooms continued with the ‘usual’ reading programme, which included phonics instruction but did not target PA. Results demonstrated that children exposed to classroom PA instruction performed significantly higher on reading and spelling measures compared to children who received the ‘usual’ reading programme only. Of importance, the number of children experiencing word decoding difficulties after one year of schooling reduced from 26 per cent among children who followed the ‘usual’ reading programme to 6 per cent among children who received classroom PA instruction. These results provide evidence that a short and intensive period of classroom-wide PA instruction in the first year of schooling can have a positive influence on raising reading achievement. In the third experiment (reported in Chapter 5), the effect of classroom PA instruction on raising reading achievement and reducing inequality in literacy outcomes for children with spoken language impairment (SLI) was examined. The data from 129 five-year-old children who participated in the second experiment were extracted and analysed. End-of-year reading outcomes between children with SLI who received classroom PA instruction (n = 7) was compared to: 1) children with typical language development (TD) who received classroom PA instruction (n = 27), 2) children with SLI who followed the ‘usual’ reading programme (n = 21), and 3) children with TD who followed the ‘usual’ reading programme (n = 74). Children with SLI who received classroom PA instruction showed significant improvements in PA, reading and spelling acquisition immediately and up to six months following PA instruction. However, this cohort, in comparison to children with TD, appeared less able to transfer their enhanced PA knowledge to reading and writing tasks. Of importance, children with SLI who received PA instruction performed significantly higher than children with SLI who followed the ‘usual’ reading curriculum; and on par with children with TD who followed the ‘usual’ reading programme. Children with TD who received classroom PA instruction significantly outperformed all other cohorts in this experiment on end-of year reading measures. These results indicate that both children with TD and children with risk for reading difficulties can benefit from classroom-wide teacher-directed PA instruction. These findings have positive implications for elevating reading achievement and reducing inequality between good and poor readers. In the fourth experiment (reported in Chapter 6), the validity and reliability of the computer-based PA screening and monitoring tool was investigated and established. Using a longitudinal research design, the responses of 95 children to test items in the CBA at the start, middle and end of the first year at school were collated and analysed to provide evidence of content, construct and criterion validity, in addition to test-retest and internal consistency reliability. A number of statistical analyses were employed including Rasch Model analysis, exploratory factor analysis and multiple regression analysis. Results demonstrated that the majority of test items were appropriate for five-year-old children in the first year of school and sampled a spectrum of ability levels that would be present in a typical classroom environment. Rhyme oddity, initial phoneme identity and letter-knowledge tasks were most appropriate at school-entry while tasks of final phoneme identity, phoneme blending and phoneme segmentation became more suitable by the middle and end stages of the first year at school. Importantly, performance on the CBA predicted end-of-year reading status with 94 per cent accuracy, and in conjunction with language abilities accounted for 68.9 per cent of the variance in end-of-year reading performance. These findings indicate that the computer-based PA screening and monitoring tool developed and applied in this thesis has sufficient validity and reliability to be used confidently as a time-efficient assessment tool in the classroom. The results from the experiments reported in this thesis provide evidence that PA can be efficiently and effectively integrated into the beginning classroom reading programme from two complementary perspectives: 1) through use of computer-based screening and monitoring of PA skills, and 2) through implementation of a short and intensive period of teacher-directed classroom-wide PA instruction. The results reported in this thesis demonstrate that the evidenced-based integration of key predictors of literacy success, such as PA, into existing classroom programmes can support national and international initiatives that seek to raise reading achievement and reduce inequalities in literacy outcomes for all children.