Vi utforskar vulsten, ett återkommande moment för möbeltapetserare, och från ett nytt och ej funktionsgivet sätt placerar vi den på ram för alla att se. När en tapetserare ska ta sig an momentet vulst så utgår hen från hur en, i möbelsammanhang, stomme är utformad och vilken sorts vulst som passar till just den möbeln. Ramarna för hur vulsten skall se ut är nästintill förbestämd då ett slutgiltigt resultat ofta ska återskapas eller restaureras i äldre objekt. I nya möbler finns ingen mall och på så sätt lite mer frihet hur vulsten kan utformas men funktionen är densamma. Vulsten ska hjälpa stoppningen att ge slutgiltig form, karaktär och känsla till möbelns slutgiltiga uttryck. Det som vulsten har gemensamt i båda fallen är att den alltid är dold. Genom ett formsökande i det traditionella tapetserarhantverket samt på ett inspirationsbaserat plan har vi tagit fram ett antal prover på olika varianter av vulst. Vulsten har fått möjlighet att förändras och formas med hjälp av olika stygntekniker. Med ett syfte att på ett visuellt och icke funktionsbaserat sätt synliggöra en tapetserares dolda hantverk vill vi påvisa ett annat sätt att förhålla sig till detta specifika moment och det givna hantverket.

The scaling of CMOS technologies has increased the performance of general purposeprocessors and DSPs while analog circuits designed in the same process have not been ableto utilize the process scaling to the same extent, suffering from reduced voltage headroom and reduced analog gain. In order to design efficient analog‐to‐digital converters in nanoscale CMOS there is a need to both understand the physical limitations as well as to develop new architectures and circuits that take full advantage of what the process has tooffer. This thesis explores the power dissipation of Nyquist rate analog‐to‐digital converters andtheir lower bounds, set by both the thermal noise limit and the minimum device and feature sizes offered by the process. The use of digital error correction, which allows for lowaccuracy analog components leads to a power dissipation reduction. Developing the bounds for power dissipation based on this concept, it is seen that the power of low‐to‐medium resolution converters is reduced when going to more modern CMOS processes, something which is supported by published results. The design of comparators is studied in detail and a new topology is proposed which reduces the kickback by 6x compared to conventional topologies. This comparator is used in two flash ADCs, the first employing redundancy in the comparator array, allowing for the use of small sized, low‐power, low‐accuracy comparators to achieve an overall low‐power solution. The flash ADC achieves 4 effective bits at 2.5 GS/s while dissipating 30 mW of power. The concept of low‐accuracy components is taken to its edge in the second ADC which oes not include a reference network, instead relying on the process variations to generate the reference levels based on the mismatch induced comparator offsets. The reference‐free ADC achieves a resolution of 3.69 bits at 1.5 GS/s while dissipation 23 mW showing that process variations not necessarily must be seen as detrimental to circuit performance but rather can be seen as a source of diversity.

A research report submitted to the Faculty of Commerce, University of the Witwatersrand, Johannesburg, in partial fulfillment of the requirements for the degree of Master of Commerce. November 1995. / The provision of timely, accurate, and relevant information to executives is prime to ensuring that they make quick and informed decisions that are critical to the competitiveness of their organisations. One such source of information is meant to be the Executive Information System, a system which combines internal and external information for electronic presentation to management in individually customised formats. Whilst it is required that the system address the information needs of the executives, the dynamic and ever-changing business environment makes it difficult for such a system to keep up-to-date. The aim of the research is to identify those critical issues, which when managed properly, will ensure that the system remains providing and meeting the needs of the executives. Ten interviews were conducted from business organisations in order identify these factors. The report consists of chapter one which gives a brief background of the research; chapter two is the review of the available literature which covers the origin, purpose and structure of EIS, criteria for successful implementation, benefits and issues related to the management of an operating EIS; chapter three describes the research methodology used to undertake this research; chapter four describes the data collection phase of the research; chapter five is the analysis and testing of the empirical generalisations ending with a list of critical success factors for managing an operating EIS; and chapter six, which is also the last, which highlights the limitations of the research and areas for further research. After analysing the interview transcripts from the semi-structured interviews using the content analysis method, it was concluded that the empirical generalisations were strongly supported. A list of ten critical success factors raised by the respondents is listed at the end of chapter five. This factors will contribute towards helping South African business organisations in the management of their operating Executive Information Systems investments. / AC2017

Introduction Chronic diseases are rapidly escalating and place tremendous burden on health care systems in the developing world. The effectiveness of post-physical examination communication with patients is as crucial as their physical observations. Mobile phones, as one of the innovative technological intervention in the 21st century, have become part of people’s lives. Their widespread availability has given them the potential to revolutionise health care communication and improve health services. The purpose of the present research report was to explore the feasibility of using text messages (SMS) by patients in managing their chronic illnesses in a rural setting in three Bushbuckridge clinics. Methodology A cross sectional descriptive study using quantitative methodology was carried out at three intervention clinics, where the electronic Patient Health Information System (PatHIS) was to be installed in the Bushbuck Area, Mpumalanga. A questionnaire was administered by the researcher at a specific clinic situated in rural setting to solicit information from participants. The researcher also used the method of observation, that is, an SMS was sent by the researcher to the participants with cellphones during the interview. Participants were requested to open and read the message or open their phonebook while the researcher was observing them. Results A total of 74 participants were interviewed. 74% (55/74) of participants owned cellphones and indicated that they were for personal use. Seventy-eight percent (15/19) of participants who did not own cellphones had access to other people’s cellphones, and 87 % (13/15) indicated that they did not mind if other people received SMS on their behalf. Only 25% of cellphone owners were able to demonstrate how they opened their SMS and read it. Ninety-three percent of cellphone owners who were unable to read their own SMS indicated that their messages were read by either their children and/or grand children. Eighty-eight percent (62/70) of the participants indicated that they would prefer to receive SMS in their own home language. Ninety-one percent (68/70) indicated that they would like to receive SMS from the clinic in future. Seventy Percent of the participants would prefer to receive appointment reminders via SMS. Fifteen Percent and 13 % would like to receive test results and health information via SMS respectively. Participants also indicated that they would like to be informed about the unavailability of medication at the clinic pharmacy. Discussion The study indicated that the use of SMS in the management of chronic diseases is feasible based on the number of participants who would like to receive SMSes from the clinic. However participants were specific in terms of the type of text messages they preferred to, that is, they preferred to receive appointment reminders via SMS. It is recommended that before such an intervention is implemented a balance between privacy, confidentiality as well as comprehension of test messages be established. It is also crucial to focus on patients’ preferences in terms of the type of text messages, as well as the language used. This will determine whether patients accept the use of text messages in managing their chronic illnesses.

This report provides a description of the development and implementation of an Exoplanet visualization within the interactive astro-visualization software OpenSpace. Orbital Data from The Exoplanet Orbit Database were used to render the planetary systems around stars known to have exoplanets in orbit. The uncertainties of the data in the database were incorporated into the design of the visualization. A feature that visualizes the discovery method of exoplanets was also implemented.

In this degree project global optimization methods, for a previously developedsoftwareprototype of a stereo odometry system, were studied. The existing softwareestimatesthe motion between stereo frames and builds up a map of selected stereo frameswhich accumulates increasing error over time. The aim of the project was to studymethods to mitigate the error accumulated over time in the step-wise motionestimation.One approach based on relative pose estimates and another approach based onreprojection optimization were implemented and evaluated for the existing platform.The results indicate that optimization based on relative keyframe estimates ispromising for real-time usage. The second strategy based on reprojection of stereotriangulatedpoints proved useful as a refinement step but the relatively small errorreduction comes at an increased computational cost. Therefore, this approachrequiresfurther improvements to become applicable in situations where corrections areneededin real-time, and it is hard to justify the increased computations for the relatively smallerror reduction.The results also show that the global optimization primarily improves the absolutetrajectory error.

In South Africa, the importance of computing and information technology (IT) is increasing. Yet, there is an under representation of women IT employees, this may be due to the low percentage of women obtaining IT degrees. South African women are already seriously underrepresented in the IT field and represent an untapped resource. Therefore attention needs to be directed to factors which effect women’s intentions to pursue IT careers. This study drew on two theoretical perspectives, namely the Theory of Planned Behavior, and Social Cognitive Theory to derive a model of how two important factors, computer selfefficacy, and computer anxiety influence women’s feelings about the impact of computers on their daily lives and society, as well as their understanding of computers (i.e. computer attitude). The model further depicted the direct effect of computer attitude. Women’s computer attitudes were also expected to improve once they have received computer training. Although the main focus of the study was towards women’s computer attitude and intention to select an IT career, the study also compared the extent to which gender influences computer self-efficacy, computer anxiety, computer attitude and intention to select an IT career, as well as the relationships that exist between these variables. Hypotheses were thus derived from the model, and uses prior research to argue the validity of the hypotheses. Quantitative data was collected from a sample of 263 first year students from a leading South African University. Statistical analyses of the data revealed that female students intention to select an IT career consisted of two factors namely, IT career interest and perceived tangible rewards. Pearson correlation and multiple regressions were used to test hypotheses. Results revealed that factors such as computer training, computer self-efficacy, computer anxiety, and positive computer attitude influenced IT career interest and perceived tangible rewards. Amongst female students, computer training, computer self-efficacy and perceived tangible rewards impacted IT career interest. This means that if females received computer training, they were more confident towards computers and aware of IT careers prospects, and thus they would be more likely to select an IT career. The study results also detected gender differences which indicated that females are more computer anxious than males, while males are more computer confident and like computers more than females. In addition females are also less likely to select IT careers than males. These results provide important guidance to educational institutes, the IT industry, IT managers, human resource professionals, and other individuals’ interested in career development issues and the gender gap in South African IT.

No description available.

I hela samhället pågår ett intensivt arbete med att minska klimatpåverkan. Ser man till det totala utsläppet av växthusgaser i Sveriges står byggindustrin för över tjugo procent i dagsläget. I denna studie undersöktes och jämfördes klimatpåverkan under byggskedet för tre olika typer av pelare som använts för att stärka undergrunden vid Skanskas projekt ”Mälarbanan”. Byggskedet berör energiåtgång för produkt- och byggprocesser i en livscykelanalys. En jämförelseanalys på den totala klimatpåverkan i CO2-ekvialenter mellan de olika delarna i byggskedet samt mellan de olika pelartyperna har gjorts. Till hjälp för denna jämförelse har en förenklad livscykelanalys gjorts med ett klimatverktyg som är utvecklat av Skanska. Syftet med rapporten var att göra en jämförelseanalys avseende klimatpåverkan under byggnation med olika typer av pelare som används för att stärka undergrunden. Detta för att få en ökad förståelse och påvisa skillnader mellan materialen ur miljösynpunkt. De pelare analyserats är traditionella KC som innehåller kalk och cement, KCE som innehåller kalk, cement och flyg aska samt multicementprodukten Multicem. Resultatet visar att det är produktskedet som har störst utsläpp och miljöpåverkan för samtliga typer av pelarna. Produktskedet är den fas där material och byggnadsdelar produceras. Byggprocessen genererar en mycket liten del av utsläppen. Byggprocessen är det skede där byggnaden blir upprättat samt transporterna från fabrik till byggarbetsplats. Beräkningarna visar även att det finns en betydande skillnad mellan de olika bindemedlen som utgör pelarna. Analysen visar att multicement är ett klart miljövänligare alternativ än både traditionella kalkcementpelare och KCE-pelare. Utifrån beräkningar som gjorts i detta arbete dras slutsatsen att det är helt korrekt att lägga fokus på att utveckla sammansättningen av bindemedlen. Detta är den del i byggskedet som har mest miljöpåverkan. I jämförelse mellan de pelartyper som analyserats i detta arbete är multicement det mest fördelaktiga ur klimatsynpunkt. / Throughout societygreat effort is being made to reduceclimate impact. Looking at the total emissions of greenhouse gases in Sweden, the construction industry accounts for over twenty percent today. This study investigated and compared the construction phase for three different types of pillars that were used to strengthen the subsoil duringSkanska's project "Mälarbanan".The construction phase deals with energy consumption for product and construction processes in a life cycle analysis. A comparison analysis of the total climate impact in CO2equivalents between the different parts of the construction phase and between the different pillar types was made. To facilitate this comparison a simplified life cycle analysis was done with a climate tool developed by Skanska. The purpose of the report was to make a comparative analysis of the climate impact during construction with the different types of pillars. This was done togain an increased understanding and demonstrate differences between the pillars from an environmental point of view.The pillars analyzed where traditional KC containing lime and cement, KCE containing lime, cement and flue gas dust and the multicement product Multicem. The result shows that the productstagehas the largest environmental impact for all types of pillars. The product stage is the phase in which materials and building parts are produced. The construction process generates a very small part of the emission. The construction process is the phase where the building is built and the transports from factory to construction site. The calculations also show that there is a significant difference between the different binders that constitutes the pillars. The analysis shows that multicement pillars are a clearly more environmentally friendly alternative than both traditional lime cement columns and KCE pillars. Based on calculations fromthis workit can be concluded that it is correct to focus on developing the composition ofthe bindersused in the pillars. This conclusion is bases on that thispart of the production stage that has the greatest environmental impact. The comparison between the types of pillars shows that multicementpillarsarethe best from a climate point of view.

No description available.