<p>An electrochemical cell has been designed for use for water electrolysis in 30 w/o KOH solution at 80˚C. Various electrode holders and coatings are tested using Ni, NiO as oxygen electrode. A teflon holder in which the electrode press-fits is found to give adequate protection to the electrode.</p> <p>Epofix resin, when mixed in the ratio of 8 parts epoxy to 1 part hardner, applied to the back face of an electrode, is found to restrict electrode reaction to only the surface of interest. This hardner is stable in 30 w/o KOH solution at 80˚C. Current-potential measurements obtained for polished polycrystalline nickel are found consistent with those reported in the literature. The measured electrode potentials on polished nickel are similar to that of electrode which was thermally pre-oxidised in air. This is thought to be due to the fact that the polished nickel surface is rapidly covered with a layer of oxide as soon as oxygen evolution begins.</p> <p>Dual Tafel regions are observed for each electrode, and the higher slope at the high current densities are thought to be due to oxide formation at these current densities but the absence of hysteresis loops are taken as an indication that the oxide may not be stable with polarisation.</p> / Master of Engineering (ME)

Detta examensarbete syftar till att undersöka vilka mål en offentlig verksamhet har vid uppfyllandet av kraven i Dataskyddsförordningen. En kvalitativ metodik har tillämpats med åtta semistrukturerade intervjuer med respondenter inom tre funktioner inom den undersökta verksamheten – styrning, verksamhetsledning och tjänstemän. Det teoretiska ramverket för studien är värdefokuserat tänkande, och resultatavsnittet inkluderar en beskrivning av Dataskyddsförordningen enligt respondenterna och därefter en redovisning av målstrukturerna för respektive respondent. Baserat på resultatet fokuserar diskussionen på utvecklandet av målstrukturerna, distinktionen mellan fundamentala och instrumentella mål, hur värdefokuserat tänkande har använts för att formulera målstrukturerna samt ett avsnitt med fokus på hur de enskilda intervjuerna bidrar till att ge en helhetsbild av verksamhetens dataskyddsarbete och hur resultatet kopplar an till beslutskontexten avseende hur Dataskyddsförordningens krav direkt påverkar beslutsfattande och åtgärdsplanering inom verksamheten. En slutsats som kan dras är att målen och målstrukturerna för varje respondent reflekterar deras unika utmaningar och behov, och de övergripande fundamentala målen förblir relativt enhetliga och inriktade på att säkerställa efterlevnad av Dataskyddsförordningen. Målstrukturerna kan möjligen bidra till att hjälpa verksamheten hantera komplexa beslutssituationer samtidigt som den undersökta verksamheten bibehåller centrala värderingar som integritet, säkerhet och transparens kopplat till dataskyddsrelaterade frågor. / This thesis aims to explore the objectives that a public operation has when fulfilling the requirements of the General Data Protection Regulation. A qualitative methodology has been applied, including eight semi-structured interviews across three functions within the studied organization – governance, management, and officials. The theoretical framework for the study is value-focused thinking, and the results section includes a description of the General Data Protection Regulation according to the respondents, followed by a presentation of the structures of the objectives for each respondent. Based on the results, the discussion focuses on the development of the structures of the objectives, the distinction between fundamental and instrumental objectives, how value-focused thinking has been used to formulate the structures of the objectives, and a section focusing on how the individual interviews contribute to an overall picture of the organization’s data protection work, and how the results connects to the decision-making context regarding how the General Data Protection Regulation requirements directly affect decision-making and action planning within the organization. A conclusion that can be drawn is that the objectives and the structures of the objectives for each respondent reflect their unique challenges and needs, and that the overall fundamental objectives remain relatively uniform and focused on ensuring compliance with the General Data Protection Regulation. The structures of the objectives may potentially help the organization manage complex decision-making situations while maintaining core values such as integrity, security, and transparency related to data protection issues.

Explainable Artificial Intelligence (XAI) integration has become an important topic in the rapidly evolving recruitment landscape in order to maintain ethical decision-making and increase stakeholder confidence. This thesis investigates the integration of XAI models into hiring procedures, aiming to establish a transparent and consistent decision-making environment that mitigates potential biases and addresses ethical concerns inherent in AI-driven systems. The research envisions a future where AI not only supports but enhances the capabilities of HR professionals and hiring managers by providing deeper insights and more precise candidate evaluations. By doing so, the study contributes valuable insights aimed at optimizing recruitment processes, thereby increasing efficiency and effectiveness of the recruitment process. The research explores how XAI can support and enhance the capabilities of HR professionals and hiring managers by providing deeper insights and more accurate evaluations of candidates. It also assesses the practical implications of employing XAI, its impact on recruitment outcomes, and the ethical dimensions of utilizing such advanced technologies in organizational settings.

Digital transformation and the process of large organizational change is a complex undertaking. To ease the process, organizations can employ champions who act as facilitators, guiding individuals towards a desired outcome. In this study, we explore the function and purpose of champions, investigate which qualities and responsibilities can be emulated by AI, and the resulting implications for organizations. A qualitative research strategy was conducted through semi-structured interviews with experienced professionals in the area of digital transformation and AI.  The findings of the thesis prove the effectiveness of a top-down and bottom-up approach in overcoming resistance to change, where champions play a pivotal role as enablers. In practice however, challenges in time constraints and lack of recognition hinder the effectiveness of champions. Our findings show that AI, specifically foundation models with related techniques, can shoulder a significant part of the champions responsibilities. Knowledge sharing is central to change and an AI solution can enhance the access to organizational knowledge through continuous availability and consistent communication, guiding users through complex processes and systems. Limitations in the technique are found in offering proactive support and understanding implicit and nuanced organizational processes. The organizational implications reside in navigating the rapid advancements of AI, as organizations need to promote continuous learning and standardize processes to maximize the value of foundation models. Remaining model agnostic is important, andÄmdeveloping AI and data governance frameworks is essential to ensure alignment with the overall organizational strategy.  What is clear is that foundation models and the new generation of AI mark the beginning of a technological shift. AI should be viewed as a collaborative tool to enhance productivity, which will necessitate a shift in roles and responsibilities towards strategic and critical thinking. To maintain a competitive edge, organizations must dedicate time and resources to adopt new AI technologies.

This thesis focuses on enhancing the internal cooling mechanisms of ABB’s Omnicore V400XT control cabinets, which are integral to robotic operations. The research aims to mitigate thermal inefficiencies and eliminate hot spots by improving air distribution within the cabinets. SolidWorks flow simulations and experimental validationswere employed to assess various fan housing designs and air chamber configurations. Results indicate that the introduction of an elevated air chamber outlet significantly improves air distribution, ensuring higher air velocities across critical components. This modification also presents the challenge of air potentially exiting the chamber prematurely, thus reducing the cooling efficiency through convection and conduction. Experimental data corroborate that while the elevated air chamber outlet enhances air distribution, the overall average temperature within the cabinet remains largely unaffected by different fan designs. This suggests that the rotational force exerted by the fan directs airflow towards the cabinet walls rather than the components, limitingthe cooling efficiency. Tools such as Simscape and 3D printing were utilised for prototype development and testing. These findings provide a cost-effective approach to improving thermal management in robotic control cabinets, potentially setting a new standard for industrial applications. This comprehensive approach aims to enhance the efficiency and reliability of robotic control systems, contributing to the advancement of industrial automation.

Augmented Reality (AR) applications require novel rendering technologies, sensors, and interaction techniques. This thesis describes the nascent field of AR, and outlines the design of a new college campus annotation application which serves as a concrete example of how to flesh out a full AR system. Code for the application is included in the Appendix. As such, this thesis demonstrates that AR is advanced paradigm that nonetheless constitutes a feasible challenge for independent programmers.

I noticed that maintenance workers had the same itinerary when emptying trashcans, meanwhile some trashcans needed to be emptied urgently. Traditionally, ETSU maintenance operate on daily routes to pick trash on designated time, regardless the level of the containers. The time, resources and labor invested in collecting the trash could be saved. Therefore, I decided to use the Internet of Things (IoT) to create a device that will optimize trash collection, to reduce costs and pollution.

Surface air pressure differentials that occur over reservoirs, canals, and water-catchment aprons in high-wind conditions were determined by the use of models in a wind tunnel. Such information was needed concerning the magnitude and location of destructive wind forces on water barriers constructed of exposed flexible membrane liners. Rigid models, without a membrane, were used to measure airpressure differentials. Air-pressure differentials were dependent on geometric configuration and were independent of viccous forces above the critical Reynolds number which was determined experimentally. The geometric factors studied with respect to reservoirs and canals included approach slope, approach slope length, leeward slope, and breadth-depth ratio. Those pertaining to water-catchment aprons included breadth-berm height ratio and berm shape. On the leeward slope of reservoirs, favorable (positive) differential pressures were more apt to occur as the approach and leeward slopes decreased (became less steep), but extreme adverse (negative) pressures occurred under the same conditions near the top edge of the slope. As the leeward slope increased the pressure coefficient values were essentially constant over the entire surface. On the reservoir bottom, adverse pressures did not exist when approach and leeward slopes were at the minimum evaluated (1:4). When the leeward and approach slopes increased the average pressure on the bottom became less favorable. The most adverse pressure coefficients generally occurred at the toe of the leeward slope, while maximum favorable pressures on the reservoir bottom generally occurred at the toe of the downwind slope. In most instances, the pressure on the downwind slope was favorable; however, adverse pressures were recorded near the top edge of the slope. These adverse or negative pressure conditions were more apt to occur as the breadth-depth ratio increased and the leeward slope decreased. Average pressure values on the interior surface of canals were generally less adverse than for reservoirs. Similar to the reservoirs, the most adverse pressures on the leeward slope of the canals were found immediately over the upper edge of the slope. Extreme adverse pressures on the canal bottom were associated with long and steep approach slope conditions. One exception was the occurrence of the most favorable pressure over the canal bottom when the approach slope was short but still steep. In addition to measurement of adverse pressures near the top edge of the downwind slope, adverse pressures were found near the toe of the slope in some instances. The portion of the downwind slope under an adverse pressure influence decreased as the breadth-depth ratio increased. Generally, pressures over a canal were more responsive to the approach slope and approach slope height than to leeward slope arid breadth-depth ratio. For a reservoir, however, pressures were responsive to all geometric factors, depending on which section of the reservoir was being considered. Pressure distributions over water-catchment aprons were independent of breadth-berm height ratios of 50 or greater. Negative pressures were lower over gradual sloped catchment berms by a factor of three than over sine-shaped berms. Each berm shape, on the leeward side of the upwind berm, had a pressure distribution associated with it that was the same as far as shape but was different in magnitude depending on the shape of the windward side of the berm. Pressures were less adverse on the leeward side of the berm, if the windward side were gradually sloped. Pressures were near zero to slightly favorable over a large portion of the water-catchment apron between the berm toes. This near stable favorable condition might change significantly, if site conditions were to change.

<p>Detta examensarbete på C-nivå behandlar design av en snöskoter. Uppdragsgivaren är företaget SnoWolverine som vill utveckla en snöskoter med tre drivband varav två placerade i fronten.</p><p>Den omfattande informationsinsamling som har skett under arbetets gång har visat att en trebandad skoter, som har utmärkt framkomlighet, har en stor marknad. De lösningar som finns på marknaden, främst fyrhjuling med bandsats, har alla kompromisser.</p><p>Produktutvecklingsverktyg som funktionsanalys och QFD har använts i processen. Stort fokus har legat på utveckling av formspråket för snöskoter och utvecklingen av smarta funktioner som efterfrågas av målgruppen.</p><p>Resultatet är en kraftfull snöskoter med ett kompakt utseende. Främre boggin är gjord så utrymmessparande som möjligt och designad för att vara robust. Unika funktioner är bland annat en vindtunnel som fungerar som vindruta, frontbåge med vinschfäste, utfällbar sadel och förvaringslösningar.</p>

<p>Examensarbetet är utfört i samarbete med företaget Mil Tech i Västerås. Arbetet har gått ut på att konvertera en redan existerande turbojetmotor med dragkraft på 110 Newton till en turboaxelmotor där effekten tas ut via en axel. Konverteringen av turbojetmotorn till en turboaxelmotor sker genom att konstruera en modul bestående av ett friturbinsteg som fästes på turbojetmotorn. Arbetets fokus har legat på att få en lättillverkad och enkel moduluppbyggt friturbinsteg som med få medel kan fästas direkt på turbojetmotorns utloppsdel utan att behöva modifiera turbojetmotorn. Det moduluppbyggda friturbinsteget innehåller alla de mekaniska detaljer som gör en konvertering från turbojetdrift till turboaxeldrift möjlig. Arbetet har inletts med att ta fram termodynamiska beräkningar för att avgöra motorns prestanda och motorns fysikaliska krav på design, konstruktion, material och hållfasthet. Examensarbetet innehåller solidmodeller samt konstruktionsritningar som gör det möjligt att utifrån detta bygga en fungerande friturbinmodul.</p>