Thesis (MPhil)--Stellenbosch University, 2004. / ENGLISH ABSTRACT: The interface between science and technology and the society has led to the notion of science as a social contract, in which scientists, politicians and the general public are called upon to acknowledge the urgency of using all fields of science and technology to address human needs. Science and technology is used as an instrument of change for a better quality of life and sustainable development for the present and future generations. The object of science and technology policies is to achieve specific development objectives. It is thus imperative to adopt science and technology policies that support the national development strategies. It is also important to set up science and technology structures to facilitate the proper functioning of the science and technology system. Competitiveness constitutes one of the most important challenges facing Southern Africa today. With globalization and the expansion of world trade competition, it has become more difficult for Southern African enterprise to keep up with the pace of technological developments. In the light of these challenges, most countries are driving towards the adoption of a national system of innovation (NSI) to encourage the interaction of policies, research and development, human resource development and industrial development. The study is induced by major science and technology set backs, which are common across countries in Southern Africa namely, poor co-ordination mechanisms, poor science and technology infrastructure and a lack of funding. The study provides background information on the theoretical framework of the concept of NSI. For the research method, a qualitative research design was followed with content analysis of existing documents. Published documents were used to provide information on the three countries, which were used as case studies namely Malawi, Namibia and South Africa. The main focus of the case studies is on the following: an outline of the policy goals of each of the three countries, the concept of the NSI as it is expressed by each of the countries and the science and technology structures in the three countries. The study identified poor co-ordination of science and technology activities as the key problem of all three countries. The structures differ slightly and in particular, the placement of the management of science and technology determines the efficiency of the system. The South African NSI is well established as its network is strengthened by the National Advisory Council for Innovation and the National Research and Development Strategy. Next is Namibia which has a system in place, while Malawi is still at the initial stages of setting up its NS!. / AFRIKAANSE OPSOMMING: Die koppelvlak tussen wetenskap en tegnologie en die gemeenskap het gelei tot die siening van wetenskap as 'n sosiale kontrak waarin wetenskaplikes, politici en die algemene publiek versoek word om te erken dat dit nodig geword het om alle vertakkinge van wetenskap en tegnologie aan te wend om menslike nood te verlig. Wetenskap en tegnologie word gebruik as 'n instrument om verandering teweeg te bring ter bevordering van 'n beter kwaliteit lewe en volhoubare ontwikkeling vir die huidige en toekomstige generasies. Die doel van 'n wetenskap en tegnologiebeleid is om spesifieke ontwikkelingsdoelstellings te verwesenlik. Dit is dus noodsaaklik dat hierdie beleid in ooreenstemming met die nasionale onwikkelingsstrategieë ontwerp moet word. Dit is ook belangrik om wetenskap en tegnologiestrukture in plek te stel wat die effektiewe funksionering van die sisteem kan vergemaklik. Mededingbaarheid is een van die grootste uitdagings wat Suider Afrika tans in die gesig staar. Met globalisering en die uitbreiding van wêreldhandel het dit moeiliker geword vir Suider Afrikaanse ondernemings om in pas te bly met tegnologiese ontwikkeling. In die lig van hierdie uitdagings stuur die meeste lande in die rigting van 'n Nasionale Sisteem vir Innovasie (NSI) om interaksie tussen beleid, navorsing en ontwikkeling, menslike hulpbronontwikkeling en industriële ontwikkeling aan te moedig. Wat aanleiding gegee het tot hierdie studie is die wetenskap en tegnologieprobleme wat algemeen voorkom in die lande in Suider Afrikaanse, naamlik onvoldoende koërdinasie meganismes, swak wetenskap en tegnologie-infrastruktuur en 'n gebrek aan fondse. 'n Kwalitatiewe navorsingsontwerp is gevolg waarin analise van die inhoud van dokumente as navorsingsmetode gebruik is. Die studie verskaf agtergrond-inligting oor die teoretiese raamwerk van die NSI konsep. Gepubliseerde dokumente is gebruik om inligting te verskaf oor die drie lande wat as gevallestudies dien, naamlik Malawi, Namibië en Suid-Afrika. Die hooffokus van die gevallestudies is soos volg: 'n raamwerk van die beleidsdoelstellings van elk van die drie lande, die konsep NSI soos toegepas deur elkeen en die wetenskap en tegnologiestrukture in elk van die betrokke lande. Die studie het swak koërdinasie van wetenskap en tegnologie-aktiwiteite as die sleutelprobleem van aldrie lande geïdentifiseer. Die strukture verskil effens van mekaar en veral die plasing van die wetenskap en tegnologiebestuur bepaal die effektiwiteit van die stelsel. Die Suid Afrikaanse NSI is goed gevestig omdat sy netwerk versterk word deur die Nasionale Adviesraad vir Innovasie en die Nasionale Navorsing- en Ontwikkelingstrategie. Volgende is Namibië wat 'n sisteem in plek het, terwyl Malawi nog maar in die beginstadium is van die daarstelling van hul NSI.

Affecting one in every 68 children, Autism Spectrum Disorder (ASD) is one of the fastest growing developmental disabilities. Scientific research has proven that early behavioral intervention can improve learning, communication, and social skills. Similarly, studies have shown that the usage of of-the-shelf technology boosts motivation in children diagnosed with ASD while increasing their attention span and ability to interact socially. Embracing perspectives from different fields of study can lead to the development of an effective tool to complement traditional treatment of those with ASD. This thesis documents the re-engineering, extension, and evolu- tion of Ying, an existing web application designed to aid in the learning of autistic children. The original methodology of Ying combines expertise from other research areas including developmental psychology, semantic learning, and computer science. In this work, Ying is modifed to incorporate aspects of traditional treatment, such as Applied Behavior Analysis. Using cutting-edge software technology in areas like voice recognition and mobile device applications, this project aspires to use software engineering approaches and audio-visual interaction with the learner to enhance social behavior and reinforce verbal communication skills in children with ASD, while detecting and storing learning patterns for later study. / Includes bibliography. / Thesis (M.S.)--Florida Atlantic University, 2014. / FAU Electronic Theses and Dissertations Collection

This work presents the implementations of three adaptive broadcast protocols for vehicular ad hoc networks (VANET) using the Network Simulator 3 (Ns-3). Performing real life tests for VANET protocols is very costly and risky, so simulation becomes a viable alternative technique. Ns-3 is one of the most advanced open source network simulators. Yet Ns-3 lacks implementations of broadcast protocols for VANET. We first implement the Distance to Mean (DTM) protocol, which uses the distance to mean to determine if a node should rebroadcast or not. We then implement the Distribution-Adaptive Distance with Channel Quality (DADCQ) protocol, which uses node distribution, channel quality and distance to determine if a node should favor rebroadcasting. The third protocol, Statistical Location-Assisted Broadcast protocol (SLAB), is an improvement of DADCQ which automates the threshold function design using machine learning. Our NS-3 implementations of the three protocols have been validated against their JiST/SWANS implementations. / Includes bibliography. / Thesis (M.S.)--Florida Atlantic University, 2016. / FAU Electronic Theses and Dissertations Collection

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Modern implantable and body worn medical devices leverage wireless telemetry to improve patient experience and expand therapeutic options. Wireless medical devices are subject to a unique set of regulations in which monitoring of the available frequency spectrum is a requirement. To this end, implants use software protocols to assess the in-band activity to determine which channel should be used. These software protocols take valuable processing time and possibly degrade the operational lifetime of the battery. Implantable medical devices often take advantage of a single chip transceiver as the physical layer for wireless communications. Embedding the channel assessment task in the transceiver hardware would free the limited resources of the microprocessor. This thesis proposes hardware modifications to existing transceiver architectures which would provide an automated channel assessment means for implantable medical devices. The results are applicable beyond medical device applications and could be employed to benefit any low-power, wireless, battery-operated equipment.

Thèse numérisée par la Direction des bibliothèques de l'Université de Montréal.

In developing countries, acute respiratory infections (ARIs) are responsible for two million deaths per year. Most victims are children who are less than 5 years old. Pneumonia kills 5000 children per day. The statistics for cardiovascular diseases (CVDs) are even more alarming. According to a 2009 report from the World Health Organization (WHO), CVDs kill 17 million people per year. In many resource-poor parts of the world such as India and China, many people are unable to access cardiologists, pulmonologists, and other specialists. Hence, low skilled health professionals are responsible for screening people for ARIs and CVDs in these areas. For example, in the rural areas of the Philippines, there is only one doctor for every 10,000 people. By contrast, the United States has one doctor for every 500 Americans. Due to advances in technology, it is now possible to use a smartphone for audio recording, signal processing, and machine learning. In my thesis, I have developed an Android application named Smart Auscultation. Auscultation is a process in which physicians listen to heart and lung sounds to diagnose disorders. Cardiologists spend years mastering this skill. The Smart Auscultation application is capable of recording and classifying heart sounds, and can be used by public or clinical health workers. This application can detect abnormal heart sounds with up to 92-98% accuracy. In addition, the application can record, but not yet classify, lung sounds. This application will be able to help save thousands of lives by allowing anyone to identify abnormal heart and lung sounds.

Thesis (MScPhysio (Physiotherapy))--University of Stellenbosch, 2007. / INTRODUCTION Computer use has been identified as a risk factor for the development of musculoskeletal dysfunction among children and adolescents internationally. Computer exposure has increased in the Western Cape since 2002, with the inception of a project to install computer laboratories in all schools in the province. As musculoskeletal dysfunction experienced during adolescence is predictive of musculoskeletal disorders in adulthood, it is essential to identify all risk and/or associative factors. METHODOLOGY A descriptive study was conducted with the aim to investigate whether the musculoskeletal dysfunction of high school learners in the Cape Metropolitan region was related to their computer use. This study was conducted in two phases. Phase 1 of the study entailed the completion of a new questionnaire, the Computer Usage Questionnaire, by grade 10-12 learners. The learner sample was divided in a computer and a non-computer group depending on their exposure to the school computer. Phase 2 of the study involved the assessment of the ergonomic design of the computer laboratories at randomly selected high schools within the Cape Metropolitan region. RESULTS A total of 1073 learners (65% girls & 35% boys), aged 14-18 years, completed the CUQ in phase 1 of the study. The results indicated that learners in the computer group had greater weekly exposure to computers than the non-computer group. The prevalence of musculoskeletal dysfunction among this learner sample was 74%. The most common body areas of dysfunction were the head, low back and neck. The female gender, playing sport and using the school computer for more than three years were associated with musculoskeletal dysfunction. Weekly computer use of more than seven hours was predictive of general musculoskeletal dysfunction, low back pain and neck pain. Twenty nine computer laboratories within 16 selected high schools were assessed by means of the Computer Workstation Design Assessment (CWDA). Out of a total score of 40, the computer laboratories obtained average scores of less than 45%, indicating compliance with less than half of the standard ergonomic requirements. The average scores for the workspace environment was less than 40%. The design of the desk, chair and computer screen had the poorest compliance to ergonomic guidelines. DISCUSSION AND CONCLUSION The prevalence of musculoskeletal dysfunction among this sample was higher than among other similar samples on the same study topic. The higher prevalence may be attributed to the poor ergonomic design of the computer laboratories in the Cape Metropolitan region. Learners’ reduced participation in activities such as sport and working on a computer due to their musculoskeletal dysfunction, may impact on their choice of a future career. The tendency of learners not to seek medical advice for their musculoskeletal dysfunction may predispose the development of chronic musculoskeletal disorders. Education of related parties on safe computing habits as well as advice on the ergonomic design of computer laboratories is recommended to prevent the progression of adolescent musculoskeletal dysfunction into chronic disorders in adulthood.

Autism Spectrum Disorders (ASD) affects one in every 110 children. Medical and educational research have demonstrated that ASD children's social skills and adaptation can be much improved, provided that interventions are early and intensive enough. The advancement of computer technologies and their ubiquitous penetration in people's life make them widely available to support intensive sociocognitive rehabilitation. Additionally, computer interactions are a natural choice for people with autism who value lawful and "systematizing" tools. A number of computer-aided approaches have been developed, showing effectiveness and generalization, but little quantitative research was conducted to identify the critical factors of engaging and improving the child's interest and performance. This thesis designs an adaptive computer interaction system, called Ying, which detects learning patterns in children with ASD and explores the computer interactive possibilities. The system tailors its content based on periodic performance assessments that offer a more effective learning path for children with ASD. / by Jake Levi Petersen. / Thesis (M.S.C.S.)--Florida Atlantic University, 2011. / Includes bibliography. / Electronic reproduction. Boca Raton, Fla., 2011. Mode of access: World Wide Web. FboU

High school biology classes traditionally follow a lecture format to disseminate content and new terminology. With the inclusive practices of No Child Left Behind, the Common Core State Standards, and end-of-course exam requirement for high school diplomas, classes include a large range of achievement levels and abilities. Teachers assume, often incorrectly, that students come to class prepared to listen and take notes. In a standard diploma, high school biology class in a separate school for students with emotional and behavioral disorders, five students participated in a single-subject, alternating treatment design study that compared the use of regular pens and digital pens to take notes during 21 lecture sessions. Behavior measures were threefold between the two interventions: (a) quantity of notes taken per minute during lectures, (b) quantity of notes or notations taken during review pauses, and (c) percent of correct responses on the daily comprehension quizzes. ... However, the differences were minor, and recommendations are made for specific training in note-taking, the pause strategy, and digital pen fluency which may produce different results for both note-taking and quiz scores. / by Carlotta A. Rody. / Vita. / Thesis (Ed.D.)--Florida Atlantic University, 2013. / Includes bibliography. / Mode of access: World Wide Web. / System requirements: Adobe Reader.