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This Master thesis solves a construction development of alternative modular mechanical systems for ventilation turbines. A research part of the thesis deals with the issues of transported medium (air) and ventilation, as well as functions, designs of ventilation turbines, and finally it provides an overview of ventilation turbines produced by manufacturers worldwide; these are used for ventilation of residential, commercial, industrial or agricultural structures using the natural or hybrid ventilation. A construction - design part is focused on creating 3D models of selected alternative modular adjustable ventilation turbines according to the data provided by the thesis supervisor and then on establishing a system for calculating the shapes of blades relative to the airflow for additional axial fan of ventilation turbines. For this purpose, a customized software application VENTILATOR (GUI) was developed to allow a flexible change of input calculation parameters and thus a fast modification of the curve shape in the 3D model of the axial fan blade.

As Semantic Web technology evolves many open areas emerge, which attract more research focus. In addition to quickly expanding Linked Open Data (LOD) cloud, various embeddable metadata formats (e.g. RDFa, microdata) are becoming more common. Corporations are already using existing Web of Data to create new technologies that were not possible before. Watson by IBM an artificial intelligence computer system capable of answering questions posed in natural language can be a great example. On the other hand, ubiquitous devices that have a large number of sensors and integrated devices are becoming increasingly powerful and fully featured computing platforms in our pockets and homes. For many people smartphones and tablet computers have already replaced traditional computers as their window to the Internet and to the Web. Hence, the management and presentation of information that is useful to a user is a main requirement for today’s smartphones. And it is becoming extremely important to provide access to the emerging Web of Data from the ubiquitous devices. In this thesis we investigate how ubiquitous devices can interact with the Semantic Web. We discovered that there are five different approaches for bringing the Semantic Web to ubiquitous devices. We have outlined and discussed in detail existing challenges in implementing this approaches in section 1.2. We have described a conceptual framework for ubiquitous semantic applications in chapter 4. We distinguish three client approaches for accessing semantic data using ubiquitous devices depending on how much of the semantic data processing is performed on the device itself (thin, hybrid and fat clients). These are discussed in chapter 5 along with the solution to every related challenge. Two provider approaches (fat and hybrid) can be distinguished for exposing data from ubiquitous devices on the Semantic Web. These are discussed in chapter 6 along with the solution to every related challenge. We conclude our work with a discussion on each of the contributions of the thesis and propose future work for each of the discussed approach in chapter 7.

De senaste årens tekniska utveckling på datorområdet har även gett återverkningar inom distansutbildningen. Den nya Informationstekniken (IT) har används mest för att utveckla kommunikationen mellan lärare och studenter på distansutbildningarna. I utgångsläget har tekniken alltså används för att underlätta arbetet inom kurserna, inte för att utveckla metoder för hur undervisning ska bedrivas. Elektroniskt lärande (e-learning) kan förklaras som ”Teknikbaserat lärande” (technology-based learning) och innefattar all form av undervisning som sker med hjälp av elektroniska media. Betoningen på lärande visar att tyngdpunkten förflyttats från hur utbildningen genomförs, till ett innehåll i utbildningen. Det finns behov av förbättringar för effektivare e-lärande inom distansutbildning. Samarbete och gemensam arbetsuppgift anses vara till hjälp vid lärande. I hög grad sker utbildning och dialog inom distansundervisning och e-lärande asynkront. Detta innebär att deltagarna inte samtidigt har direktkommunikation med varandra utan kommunikationen sker i med e-post.För att kunna möta möjligheterna till effektivare e-lärande borde en möjlighet till synkront kollaborativt arbete över gemensam arbetsyta vara av intresse.Syftet med projektet var att utveckla en synkron kollaborativ bild- och textbaserad applikation för e-lärande. Baserad på forskaren inom kognitionsvetenskap Maria Larssons rapport om fem faktorer för effektivare e-lärande samt utvärdera dessa genom en prototyp. Applikationen var tänkt att användas vid ett moment i ämnet "Organisationskommunikation" inom en distanskurs, där studenterna skulle bilda sig en uppfattning om en organisations kultur. Applikationen testades vid två tillfällen, först som ett koncepttest och därefter som en digitalt konstruerad prototyp. Tre personer deltog vid varje testtillfälle.Koncepttestet genomfördes med observation av deltagarna med dokumenterad ljudinspelning av dialogen samt efterföljande intervjufrågor. Prototyptestet utfördes med observation och med ”think-aloud” metoden samt intervjufrågor. Här skedde dokumentationen med hjälp av ljudinspelning samt skärmdumpar.Utvärderingen utgjordes av observation och intervjuer med testdeltagarna och visade att applikationen till stor del baserades på Maria Larssons fem faktorer. Min slutsats är att det varit möjligt att utveckla en applikation som till stor del baseras på de fem faktorerna och att konceptet samt prototypen kan vidareutvecklas. Värdet av ett par enstaka test kan vara begränsat då det enbart gällt sex personer. Utökade testsessioner med flera olika grupper hade kunnat ge mer tillförlitliga resultat. Jag finner att det är angeläget med fortsatt forskning angående inlärning via Internet. / The technological development during the recent past, i.e. information technology (IT), has presented new possibilities for distance learning. IT has, so far, mostly been used to enhance the communication between teachers and students. With e-learning or technology-based learning the emphasis is rather on content in education instead of how education is performed. There is a need of improvements for more efficient e-learning within distance learning. The objectives of this study were to develop synchronous collaborative software application, based on five factors for more efficient e-learning, that researcher in cognition science Maria Larsson presented 2001. The software application was evaluated through a case study in a distance course of Organisation communication. The task was how to identify the culture in a specific organisation.The application was tested on two occasions with three participants at each occasion. The first test was as low-tech concept test and the second test was made with the use of the digital prototype. On both occasions the participants reflections was recorded during the test sessions and after the tests interviews were performed with each participant. My conclusions following the evaluation of the observations and the responses to the interviews are that it is possible to develop an application based on the five factors (learning styles, narrative form, collaboration, interaction and feedback) for more efficient e-learning. However, more research and testing are needed.

Thesis (MScEng (Civil Engineering))--University of Stellenbosch, 2011. / ENGLISH ABSTRACT: Electric driven overhead travelling bridge cranes (EOHTC) form a vital part of industrial plants where heavy objects require moving. Overhead travelling cranes aid in production by allowing an uninterrupted work process on the ground while heavy loads are moved to their required locations. Various factors need consideration in determining the loads induced by an EOHTC on its support structure. In order to design such a support structure, the designer must understand and take into account the various loads that the support structure will be subject to during its lifetime. The procedure for determining the loads induced by the EOHTC on its support structure is laid out in the SANS 10160-6:2010 code of practice. This document was published in June 2010 and as a result very few worked examples exist to test the coherence of the procedure. This thesis presents an investigation into the procedure for determining the actions induced by overhead travelling bridge cranes adopted in the SANS 10160-6:2010 code of practice. The investigation was conducted by developing a software application to automatically determine the necessary crane actions needed for the design of the crane support structure, given certain input parameters. The motivation behind this was to have a tool that can calculate the crane induced loads automatically. And by developing such a tool the procedure given in the code of practice is better understood. The Java programming language was used to code the calculations with an object oriented programming approach (OOP). NetBeans, the integrated development environment for developing with Java was used to generate the required graphical user interface of the application. In addition, a Microsoft Excel calculation sheet was also developed for the purpose of comparison and verification. Whilst developing the software application, it was found that the model for the acceleration or deceleration of the crane was specific for four wheel cranes only. This model was then extended to accommodate eight and sixteen wheel cranes and incorporated into the algorithm architecture of the application. The application was successfully completed and verified using benchmarked examples. / AFRIKAANSE OPSOMMING: Elektriese oorhoofse brugkrane vorm ‘n belangrike deel van baie nywerheidsprosesse, waar dit gebruik word om swaar laste in die nywerheidsaanleg te verskuif. Oorhoofse brugkrane voeg waarde by die produksie lyn deur te sorg dat die werksproses op die grond onversteurd voortgaan terwyl swaar laste na hul vereiste posisies verskuif word. Verskillende faktore moet in ag geneem word om die nodige kraanlaste te bepaal. Hierdie laste word benodig om die kraan se ondersteuningstruktuur te ontwerp. Die ontwerper moet die nodige kundigheid hê en moet ook die verskeie laste in ag neem wat die ondersteuningstruktuur gedurende sy leeftyd sal dra. SANS 10160-6:2010 verskaf riglyne vir die bepaling van die laste wat deur oorhoofse brugkrane uitgeoefen word. Hierdie dokument is in Junie 2010 gepubliseer dus bestaan daar min uitgewerkte voorbeelde om die korrektheid van die riglyne te toets en toepassing te demonstreer. Hierdie proefskrif ondersoek die riglyne vir die bepaling van oorhoofse brugkraan aksies soos uiteengesit in die SANS 10160-6:2010. Die navorsing is uitgevoer deur middel van die ontwikkeling van ‘n sagteware toepassing wat die nodige oorhoofse brugkraanlaste automaties bepaal, gegee sekere invoer waardes. Die rede hiervoor was om ‘n hulpmiddel te ontwikkel vir die outomatiese bepaling van oorhoofse brugkraan. Deur die bogenoemde hulpmiddel te ontwikkel word die riglyne, soos gegee in die kode beter verstaan. Java is gebruik as programmeringstaal waar die objek geörienteerde programeringstyl toegepas was. Die geintegreerde ontwikkelingsomgewing vir ontwikkeling met Java, naamlik NetBeans is gebruik om die nodige gebruikers koppelvlak op te bou. ‘n Microsoft Excel sigblad is ook ontwikkel vir kontrolerings doeleindes. Gedurende die ontwikkeling van die sagtewarepakket is dit bevind dat die lasmodel vir die versnelling of vertraging van die oorhoofse brugkraan slegs op vierwiel krane van toepasing is. Hierdie lasmodel is dus uitgebrei om agt- en sestienwiel krane ook te bevat. Die lasmodel aanpassing is dan ook in die program se algoritme-argitektuur ingebou. Die sagteware toepassing is suksesvol ontwikkel en gekontroleer met ‘n maatstaf voorbeeld.

Diploma thesis Michaela Skřepská, NMgr. AJ-NJ DIPLOMA THESIS Use of film applications in English language teaching: Case study of the mobile application Mooveez Abstract This diploma thesis concerns with analysis of the software application Mooveez - English with movies which offers a new method of learning foreign languages by watching movies, fairy tale movies or documentaries. In the theoretical part the theory and methodology of current learning and teaching foreign languages is described as well as the development of education in the field of foreign languages. The theoretical part also contains information about modern technologies used in contemporary foreign language learning and teaching. The practical part depicts and evaluates the software application Mooveez in detail which includes its principles, origin, methodology and functions. This part also informs about the usage of Mooveez as a tool and as a method. Then, it is described how this application is presented in public, and whether there are other applications which could be compared with the application Mooveez - English with movies. Key words: software application, Mooveez, movie, technology, English language learning/teaching, English language, methodology, method

In this thesis, a test platform based on real-time facilities and embedded software is designed to verify the performance of a controller model in real time. By the help of this platform, design errors can be detected earlier and possible problems can be solved cost-effectively without interrupting the development process. An unmanned combat air vehicle (UCAV) model is taken as a plant model due to its importance in current and future military operations. Among several autopilot modes, the altitude hold mode is selected since it is an important pilot-relief mode and widely used in aviation. A discrete PID controller is designed in MATLAB/Simulink environment for using in verification studies. To control the dynamic system in wide range, a gain scheduling is employed where the altitude and velocity are taken as scheduling variables. Codes for plant and controller model are obtained by using real time workshop embedded coder (RTWEC) and downloaded to two separate computers, in which xPC kernel and VxWorks operating system are run, respectively. A set of flight test scenarios are generated in Simulink environment. They are analyzed, discussed, and then some of them are picked up to verify the platform. These test scenarios are run in the setup and their results are compared with the ones obtained in Simulink environment. The reusability of the platform is verified by using a commercial aircraft, Boeing 747, and its controller models. The test results obtained in the setup and in Simulink environment are presented and discussed.

Made available in DSpace on 2014-06-11T19:27:13Z (GMT). No. of bitstreams: 0 Previous issue date: 2006-07-24Bitstream added on 2014-06-13T20:35:20Z : No. of bitstreams: 1 takiy_nh_me_ilha.pdf: 1452657 bytes, checksum: d8d3e6894e199ce5407ce0e06ae03261 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Este trabalho procura auxiliar determinadas ferramentas da Gestão da Qualidade e alguns procedimentos em Engenharia de Produção. Baseado no desafio e na competitividade industrial que é estimulado pela evolução contínua de novas tecnologias, que busca o desenvolvimento e inovação constante de softwares aplicativos. Utilizando-se de técnicas tradicionais de apuração de custos de produção para garantir a lucratividade e qualidade de fabricação, procedeu-se ao estudo e ao entendimento de processos de fabricação e o desenvolvimento do sistema computacional, com a finalidade de armazenar dados e informações, para apurar o custo real de fabricação e poder determinar, com agilidade e precisão, preços de venda competitivos. O principal problema identificado diz respeito às decisões questionáveis na questão da formação de preços de venda de produtos, a partir da sua produção, que são tomadas através de dados e informações históricas de custos de fabricação coletadas informalmente e sem critérios específicos. Dessa forma, justifica-se a informatização e automatização dos procedimentos de controle de custeios, como beneficio às empresas de manufatura, minimizando o esforço de apuração e a propagação de erros em cálculos para a composição dos preços. Conclui-se que a implementação deste controle informatizado agrega valores à empresa, pelo beneficio... / This work tries to aid certain tools of the Administration of the Quality and some procedures in Engineering of Production. Based on the challenge and in the industrial competitiveness that is stimulated by the continuous evolution of new technologies, that looks for the development and constant innovation of softwares applications. Being used of traditional techniques of examination of costs production to guarantee the quality of lucrativity and production, it was proceeded to the study and the understanding of production processes and the development of the computacional system, with the purpose of storing data and information, to hurry the real cost of production and to determine, with agility and precision, competitive sale prices. The main identified problem says respect to the questionable decisions in the subject of the formation of prices of sale of products, starting from its production, that are taken through data and historical information of costs of production collected informally and without specific approaches. In that way, it is justified the informatization and automation of the procedures of control of costings, as I benefit the manufacture companies, minimizing the examination effort and the propagation of mistakes in calculations for the prices composition . It is ended that the... (Complete abstract click electronic access below)

Orientador: Hidekasu Matsumoto / Banca: Alessandro Roger Rodrigues / Banca: Fatima de Lourdes dos Santos Nunes Marques / Resumo: Este trabalho procura auxiliar determinadas ferramentas da Gestão da Qualidade e alguns procedimentos em Engenharia de Produção. Baseado no desafio e na competitividade industrial que é estimulado pela evolução contínua de novas tecnologias, que busca o desenvolvimento e inovação constante de softwares aplicativos. Utilizando-se de técnicas tradicionais de apuração de custos de produção para garantir a lucratividade e qualidade de fabricação, procedeu-se ao estudo e ao entendimento de processos de fabricação e o desenvolvimento do sistema computacional, com a finalidade de armazenar dados e informações, para apurar o custo real de fabricação e poder determinar, com agilidade e precisão, preços de venda competitivos. O principal problema identificado diz respeito às decisões questionáveis na questão da formação de preços de venda de produtos, a partir da sua produção, que são tomadas através de dados e informações históricas de custos de fabricação coletadas informalmente e sem critérios específicos. Dessa forma, justifica-se a informatização e automatização dos procedimentos de controle de custeios, como beneficio às empresas de manufatura, minimizando o esforço de apuração e a propagação de erros em cálculos para a composição dos preços. Conclui-se que a implementação deste controle informatizado agrega valores à empresa, pelo beneficio... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: This work tries to aid certain tools of the Administration of the Quality and some procedures in Engineering of Production. Based on the challenge and in the industrial competitiveness that is stimulated by the continuous evolution of new technologies, that looks for the development and constant innovation of softwares applications. Being used of traditional techniques of examination of costs production to guarantee the quality of lucrativity and production, it was proceeded to the study and the understanding of production processes and the development of the computacional system, with the purpose of storing data and information, to hurry the real cost of production and to determine, with agility and precision, competitive sale prices. The main identified problem says respect to the questionable decisions in the subject of the formation of prices of sale of products, starting from its production, that are taken through data and historical information of costs of production collected informally and without specific approaches. In that way, it is justified the informatization and automation of the procedures of control of costings, as I benefit the manufacture companies, minimizing the examination effort and the propagation of mistakes in calculations for the prices composition . It is ended that the... (Complete abstract click electronic access below) / Mestre

Mobile communication devices have become a popular tool for gathering and disseminating information and data. With the evidence of the growth of wireless technology and a need for more flexible, customizable and better-optimised security schemes, it is evident that connection-based security such as HTTPS may not be sufficient. In order to provide sufficient security at the application layer, developers need access to a cryptography package. Such packages are available as third party mobile cryptographic toolkits or are supported natively on the mobile device. Typically mobile cryptographic packages have reduced their number of API methods to keep the package lightweight in size, but consequently making it quite complex to use. As a result developers could easily misuse a method which can weaken the entire security of a system without knowing it. Aside from the complexities in the API, mobile cryptography packages often do not apply sound cryptography within the implementation of the algorithms thus causing vulnerabilities in its utilization and initialization. Although FIPS 140-2 and CAPI suggest guidelines on how cryptographic algorithms should be implemented, they do not define the guidelines for implementing and using cryptography in a mobile environment. In our study, we do not define new cryptographic algorithms, instead, we investigate how sound cryptography can be applied practically in a mobile application environment and developed a framework called Linca (which stands for Logical Integration of Cryptographic Architectures) that can be used as a mobile cryptographic package to demonstrate our findings. The benefit that Linca has is that it hides the complexity of making incorrect cryptographic algorithm decisions, cryptographic algorithm initialization and utilization and key management, while maintaining a small size. Linca also applies sound cryptographic fundamentals internally within the framework, which radiates these benefits outwards at the API. Because Linca is a framework, certain architecture and design patterns are applied internally so that the cryptographic mechanisms and algorithms can be easily maintained. Linca showed better results when evaluated against two mobile cryptography API packages namely Bouncy Castle API and Secure and Trust Service API in terms of security and design. We demonstrate the applicability of Linca on using two realistic examples that cover securing network channels and on-device data. / Dissertation (MSc (Computer Science))--University of Pretoria, 2007. / Computer Science / MSc / unrestricted