<p>Research and development on vehicle safety has lately started to direct its focus towards how to actively support the driver and make it easier for her to drive safely through letting Advanced Driver Assistance Systems (ADAS) have effect on how the driver interacts with the vehicle and the surrounding traffic. This requires research on both how the driver and vehicle perform in different situations, in terms of psychology, cognition and individual differences. In addition, physical limitations and requirements of the driver and the vehicle must be taken into account. Therefore scenarios for evaluation of these systems are required. In the area of user-centered design a rather new method, Personas, is being adopted. This thesis tries to explore if the Persona method is a viable tool for creating scenarios for such evaluations. Experiences after completing this work imply that personas indeed is a viable way to include aspects and raise issues concerning individual variability and situational context in ADAS scenarios.</p>

<p>The aim of this study is to get a deeper understanding about user tests as well as answer the question about if testing for users is necessary at all times. I've done a comparison between what the literature says, and what a company says, about testing. The tests that's been in focus in this study is prototyping and card sorting tests. Prototyping aims to give the developer feedback about the design and check if there are any obvious problems with the design. A card sorting test can be used to get input about how information architecture should be constructed. Information architecture is how the links are related in a navigation system. The company doesn't think that testing is as important as the literature. The company doesn't usually test but for the current situation they did it since the interface is crucial for their clients business. The conclusion of this study is that testing is rather important. For a designer who hasn’t got that much experience, user testing can be a way to get feedback about his designs. A more experienced designer might not need to test as much but he should be aware of testing as a possible design tool.</p>

Personas are fictitious characters that represent the needs of the intended users, and scenarios complementing the personas describe how their needs can be met. The present doctoral thesis considers the usage of personas and scenarios and how they are used in system development projects. The study is motivated by the relative lack of empirical data on the persona method in actual use. The study was carried out in the context of a large international research project called Nepomuk and involved two conceptually dif­ferent field studies. On the one hand, field studies in user settings were conducted, which aimed at creating personas and scenarios, and for which a user-centered design approach was applied using partici­pant observation, contextual interviews, video brainstorming and proto­typing. On the other hand, a field study in the setting of the Nepomuk project itself was conducted, which aimed at observing how the per­sonas and scenarios were received and used in the project work. The work conducted in the project setting was a multi-sited ethnographic field study, which was documented through ethnographic writing. The project setting field study showed that the persona method was difficult to put into consistent use, and the support of persona advocates guiding usage would have been helpful. The method was used without much effort to communicate about the needs and desires of the intended users, but was less successful in compelling project members to use personas and scenarios during various design activities. The field study also revealed alternative usages of the method that can be supported and utilized. The contributions of the thesis include an account of the effect the storytelling aspect has on the creation as well as usage of personas and scenarios. Also, the essential elements of constructing personas and scenarios are discussed as well as the prerequisites for making personas and scenarios support the design process in system development projects. Lastly, the thesis describes how personas and scenarios can support the communication of user needs and desires to project members and stakeholders as well as support design activities in system development projects. / QC20100629

Denna avhandling inom interaktionsdesign handlar om användarmedverkan vid design av digitala edutainmentspel. Arbetet omfattar en aktionsorienterad forskningsansats där barns och ungdomars medverkan har främjats i tre tillämpade designprojekt. Genom observationer och intervjuer har utmaningar och strategier för användarmedverkan dokumenterats. Därtill även de bidrag som barnens och ungdomarnas medverkan innebar för design av edutainmentspel. Avhandlingen visar på två tydliga resultat. För det första, genom de utmaningar för användarmedverkan som designprocessen innebar och hanterandet av dessa utmaningar, så påvisas hur motiv till användarmedverkan kan förändras hos designteamet. Denna förändring är en pågående process som sker före, under och efter ett designprojekt. Motiv till användarmedverkan förändras med stöd av en förmedlare. En förmedlare bibringar synpunkter och designförslag mellan användare och designers. Förmedlaren anpassar även användarmedverkan till det sammanhang inom vilket designprojektet genomförs. Genom att delge designteamet dokument om och resultat av användarsessioner, så omvandlas förmedlarens kunskap om och erfarenhet av användarmedverkan till designteamets egen. Kunskap och erfarenhet vilka därefter förändrar motiv till design av fördel för användarmedverkan. För det andra så dokumenteras i avhandlingen betydelsen av att barn och ungdomar medverkar vid design av edutainmentspel. Dessa spel har under en längre tid utmanats av att finna balans mellan lärande och underhållning. Genom sin erfarenhet av målgruppens förväntningar på tekniken, samt av att bidra inom områden för design så som; koncept och innehåll, interaktionslösningar, samt utseende och känsla, så medförde barnens och ungdomarnas medverkan ett stöd för designteamet i att finna balans mellan lärande och underhållning. I resultaten framkommer att barnen och ungdomarna deltog i projekten i egenskap av informanter. Eftersom de inte hade ansvar för den utvecklade produktionen betraktades de inte heller som medlemmar i designteamet. Med sina resultat medverkar avhandlingen i diskursen om hur traditionella designperspektiv kan tillämpas vid design av digitala edutainmentproduktioner.

This study aimed to utilize usability engineering methods in order to identify facilitators and barriers to electronic referral system adoption by radiation oncologists at Princess Margaret Cancer Centre, and provide recommendations for electronic referral system design. Analyses included workflow analysis of radiation oncologists reviewing referrals, belief elicitation interviews with radiation oncologists, a heuristic evaluation of an existing electronic referral system interface, and cognitive walkthrough of that interface with radiation oncologists. Based on these findings, the system interface was redesigned using mock-up software to address identified usability issues. The existing and redesigned interfaces were compared using observational usability testing with radiation oncologists. The redesigned system interface yielded reduced task times and enhanced user satisfaction as compared to the existing interface. Thus, user-centred design was useful in determining facilitators and barriers to e-referral adoption.

This study aimed to utilize usability engineering methods in order to identify facilitators and barriers to electronic referral system adoption by radiation oncologists at Princess Margaret Cancer Centre, and provide recommendations for electronic referral system design. Analyses included workflow analysis of radiation oncologists reviewing referrals, belief elicitation interviews with radiation oncologists, a heuristic evaluation of an existing electronic referral system interface, and cognitive walkthrough of that interface with radiation oncologists. Based on these findings, the system interface was redesigned using mock-up software to address identified usability issues. The existing and redesigned interfaces were compared using observational usability testing with radiation oncologists. The redesigned system interface yielded reduced task times and enhanced user satisfaction as compared to the existing interface. Thus, user-centred design was useful in determining facilitators and barriers to e-referral adoption.

Train traffic control is a complex task in a dynamic environment. Different actors have to cooperate to meet strong requirements regarding safety, punctuality, capacity utilization, energy consumption, and more. The GMOC model has been developed and utilized in a number of studies in several different areas. This thesis describes GMOC and uses train traffic control as the application area for evaluating its utility. The GMOC model has its origin in control theory and relates to concepts of dynamic decision making. Human operators in complex, dynamic control environments must have clear goals, reflecting states to reach or to keep a system in. Mental models contain the operator’s knowledge about the task, the process, and the control environment. Systems have to provide observability, means for the operator to observe the system’s states and dynamics, and controllability, allowing the operators to influence the system’s states. GMOC allows us to constructively describe complex environments, focusing on all relevant parts. It can be utilized in user-centred system design to analyse existing systems, and design and evaluate future control systems. Our application of GMOC shows that automation providing clear observability and sufficient controllability is seen as transparent and most helpful. GMOC also helps us to argue for visualization that rather displays the whole complexity of a process than tries to hide it. Our studies in train traffic control show that GMOC is useful to analyse complex work situations. We identified the need to introduce a new control strategy improving the traffic plan by supporting planning ahead. Using GMOC, we designed STEG, an interface implementing this strategy. Improvements that have been done to observability helped the operators to develop more adequate mental models, reducing use of cognitive capacity but increasing precision of the operative traffic plans. In order to improve the traffic controllers’ controllability, one needs to introduce and share a real-time traffic plan, and provide the train drivers with up-to-date information on the surrounding traffic. Our studies indicate that driver advisory systems, including such information, reduce the need for traffic re-planning, improve energy consumption, and increase quality and capacity of train traffic. / KAJT / FTTS

My thesis pursues the development of a tool to empower designers and non-designers to better understand humor’s function in design and to encourage the use of humor as a rhetorical device to undertake social problems. Humor research is a field that is largely based on linguistic studies, but because of its multidisciplinary stretch in the past decade has displayed a broad rhetorical influence; however, it has yet to form a substantial relationship with design. Through a literature review of linguistic, rhetorical, and design theories, I identified a set of heuristics that guide how humor should operate in design. I then tested the effectiveness of the heuristics, and with their final revision, applied them to designing for motivational problems associated with public displays of political mobilization. My user research inferred the creation of a mobile instructional tool that guides the collaborative and/or individual production of political communication artifacts (e.g. rally signs), which use humor to confront socially complex issues. The artifacts’ implicit intent is to motivate political mobilization and to found and/or empower communities. My project focus entails the creation and testing of the tool on the individual level. Whether the artifacts created produce the desired effect regarding mobilization and community strength is unknown; Future work should lend itself to testing humorous design’s effect on political mobilization and ability to empower communities.

The objective of the proposed research is to study the integration of humans and automation for the operation of regenerative life support systems (RLSS). RLSS combine physico-chemical and biological processes with the purpose of increasing the autonomy of space habitats and the life quality of their living organisms by properly reusing byproducts and regenerating consumable resources. However, these processes require energy and time to transform chemical compounds and organic wastes into nutrients, consumables, and edible products. Consequently, the maintenance of RLSS imposes a considerable workload on human operators. In addition, the uncertainties introduced by unintended chemical reactions promoted by material loop closure may create unexpected situations that, if unattended, could translate into performance deterioration, human errors, and failures. The availability of novel chemical and biological sensors together with computational resources enable the development of monitoring and automation systems to alleviate human workload, help avoid human error, and increase the overall reliability of these systems. This research aggregates sensor data and human-expert situation assessments to create a representation of their situation knowledge base (\gloss{skb}). The representation is used in a switched control approach to the automation of RLSS, for decision support, and human-automation coordination. The aggregation method consists of an optimization process based on particle swarms. The purpose of this work is to contribute to the methodological development of situation-oriented and user-centered design approaches to human-automation systems. Experiments and simulations are supported on the process of respiration in an aquatic habitat acting as a RLSS.

Initiativet till projektet togs av tandvårdspersonal på Specialisttandvården i Halmstad då de upplevde problem vid arbete med oral protetik. Problemet, som projektet även bygger på, innebär att komponenter tappas och på grund av gravitationen samt patientens position riskeras att inhaleras eller sväljas. Detta innebär ett stress- och orosmoment, vilket bidrar till en försämrad psykosocial arbetsmiljö för tandvårdspersonalen.   2008 infördes det statliga tandvårdsstödet i Sverige vilket innebär en reducerad kostnad för protetikingrepp som lett till att fler har råd med oral protetik. Därför blir problemet mer och mer utbrett, vilket gjort kravet på en lösning mer eftertraktad.   I projektet har dynamisk produktutveckling tillämpats med stort fokus på involvering av framtida användare. Artikelsökning, observation och enkätundersökning i genomförd produktdefinitionsfas lade grunden till projektet. Olika konceptgenererings- och utvärderingsmetoder tillämpades och födde den slutgiltiga prototypen. Under hela projektets gång har en kontinuerlig dialog och testning hos uppdragsgivarna utförts.   Detta produktutvecklingsprojekt resulterade i ett instrument som underlättar för tandvårdspersonal samt ökar säkerheten för patienten vid oral protetik. Lösningen är en specialutformad pincett som träs på skruvmejseln och fixerar komponenter. / The project was initiated by dental personnel at the Specialist dentistry in Halmstad, Sweden, because they experienced problems when working with oral prosthetics. There is a risk that components are dropped and due to gravity and the patient's position, being inhaled or swallowed. This means stress and concerns, contributing to the deterioration of the psychosocial work environment for dental personnel.   The Swedish dental State support was introduced in 2008, which gives the patient a reduced cost for dental prosthetic procedures. This allows more people to afford oral prosthetics. Therefore, the problem becomes more and more prevalent and the demand for a solution is requiered.    The project has implemented dynamic product development with a major focus on the involvement of future users. The project was based on literature reviews, observation and survey, which was performed in the product definition phase. Different concept generation methods and evaluation methods were applied and resulted in a final prototype. A continuous dialogue and testing with the clients where performed throughout the project.   This product development project resulted in an instrument that facilitates for dental personnel and increase safety for the patient during oral prosthetics. The solution is a specially designed forceps which slips onto the screwdriver and secures components.