Civic teachers in Swedish upper secondary schools are facing a more challenging job than ever due to the current polarized political climate. They are expected to teach about controversial issues whilst keeping the classroom at peace and at the same time allowing each student the opportunity to express their opinion. This research overview strives to explore how teachers teach and deal with controversial topics in civic studies. How can teachers work with controversial issues in the classroom? And what does previous research say about this work? In order to answer these questions a literature search has been done and previous research and empirical material has been analyzed. The findings show different approaches, such as denying the controversy or presenting different perspectives of the controversy, when teaching controversial topics in the classrooms. The results of this research review also presents different perspectives from both teachers and students on the subject, teachers’ dilemma as well as pedagogical tools that can be beneficial for students’ development. The findings also show that there is no clear answer or manual that teachers can follow or be guided by when teaching about and dealing with controversial issues. However, depending on one's goal of the lesson, one can strategically use a certain approach in order to try and reach a certain outcome.

Background Ethical dilemmas in palliative care is a common issue for nurses to handle. Nurses have the responsibility to provide care that is in the best interest for the patient and to enhance the quality of life in the end-of-life stage. Dilemmas occur when differing opinions exist about what is in the best interest for the patient. Previous research indicates that nurses play a significant and crucial role in managing ethical dilemmas in palliative care, many of them experience conflicts when their sense of what is right clashes with their perceived duties. Aim The aim of this study was to describe strategies that nurses use for dealing with ethical dilemmas in palliative care. Method A literature-based study where eleven articles have been analyzed according to Friberg's five-step model. Results The findings of this study indicates that the primary strategies nurses use for addressing ethical dilemmas in palliative care was to establishing trusting relationship with the patients and also with their relatives. Collaboration with colleagues is also crucial and fostering effective teamwork, creating an environment for collective reflection to exchange experiences and knowledge. Conclusion Effective teamwork and strong patient relationships are essential in palliative care, leadong to an increased well-being for the patient and the ability to tailor care needs individually. Nurses in palliative care require ongoing professional development to feel secure in their professional roles and to foster confident healthcare relationships. / I strävan att uppnå optimal vård för patienter i palliativ vård står sjuksköterskor inte sällan inför komplexa etiska dilemman. Syftet med denna studie var att beskriva de strategier sjuksköterskor använder för att hantera etiska dilemman inom palliativ vård. Resultatet visar att genom att mötas i samtal och att lyssna noggrant uppstår tillitsfulla relationer till både patienter och närstående. Hanteringen av etiska dilemman underlättas när sjuksköterskorna skapar en personcentrerad vårdmiljö utifrån patienters och närståendes önskemål. En annan strategi var samarbete i det tvärvetenskapliga vårdteamet. Ett teams olika kompetenser behövs för att tillgodose patienters vårdbehov. Etiska dilemman har ingen enkel lösning och för att skapa en gemensam förståelse och strategi krävs att teamet kan diskutera samt reflektera tillsammans och dela med sig av erfarenheter. Studien identifierade behovet av kontinuerlig kompetensutveckling inom etik för sjuksköterskor inom palliativ vård. Att vara rustad med djupare kunskap inom etiska teorier och metoder gav sjuksköterskorna större trygghet att fatta svåra beslut och att agera som patientadvokater. Slutligen framkom det att tid för reflektion var viktigt när sjuksköterskor stod inför etiska dilemman. Regelbundna reflektioner ökade medvetenheten hos sjuksköterskor, hur deras egna etiska värderingar påverkade deras beslut i vården av patienter i palliativt skede. Studiens resultat grundades på en sökning av elva vetenskapliga artiklar från databaserna Pubmed och Cinahl. Efter noggrann granskning och analys av artiklarna sammanställdes resultatet i två huvudteman och sex subteman. Dessutom diskuterades personcentrerat förhållningssätt, samtalets betydelse, sjuksköterskors ansvar att hålla sig uppdaterade, teamarbetets betydelse och normmedvetet och hållbarhet. Slutsatsen indikerar att genom tillämpning av dessa strategier kan sjuksköterskor hantera etiska dilemman och därigenom öka välbefinnandet för patienter inom palliativ vård.

In the United States, intersections are among the most frequent locations for crashes. One of the major problems at signalized intersection is the dilemma zone, which is caused by false driver behavior during the yellow interval. This research evaluated driver behavior during the yellow interval at signalized intersections and compared different dilemma zone countermeasures. The study was conducted through four stages. First, the driver behavior during the yellow interval were collected and analyzed. Eight variables, which are related to risky situations, are considered. The impact factors of drivers' stop/go decisions and the presence of the red-light running (RLR) violations were also analyzed. Second, based on the field data, a logistic model, which is a function of speed, distance to the stop line and the lead/follow position of the vehicle, was developed to predict drivers' stop/go decisions. Meanwhile, Cellular Automata (CA) models for the movement at the signalized intersection were developed. In this study, four different simulation scenarios were established, including the typical intersection signal, signal with flashing green phases, the intersection with pavement marking upstream of the approach, and the intersection with a new countermeasure: adding an auxiliary flashing indication next to the pavement marking. When vehicles are approaching the intersection with a speed lower than the speed limit of the intersection approach, the auxiliary flashing yellow indication will begin flashing before the yellow phase. If the vehicle that has not passed the pavement marking before the onset of the auxiliary flashing yellow indication and can see the flashing indication, the driver should choose to stop during the yellow interval. Otherwise, the driver should choose to go at the yellow duration. The CA model was employed to simulate the traffic flow, and the logistic model was applied as the stop/go decision rule. Dilemma situations that lead to rear-end crash risks and potential RLR risks were used to evaluate the different scenarios. According to the simulation results, the mean and standard deviation of the speed of the traffic flow play a significant role in rear-end crash risk situations, where a lower speed and standard deviation could lead to less rear-end risk situations at the same intersection. High difference in speed are more prone to cause rear-end crashes. With Respect to the RLR violations, the RLR risk analysis showed that the mean speed of the leading vehicle has important influence on the RLR risk in the typical intersection simulation scenarios as well as intersections with the flashing green phases' simulation scenario. Moreover, the findings indicated that the flashing green could not effectively reduce the risk probabilities. The pavement marking countermeasure had positive effects on reducing the risk probabilities if a platoon's mean speed was not under the speed used for designing the pavement marking. Otherwise, the risk probabilities for the intersection would not be reduced because of the increase in the RLR rate. The simulation results showed that the scenario with the pavement marking and an auxiliary indication countermeasure, which adds a flashing indication next to the pavement marking, had less risky situations than the other scenarios with the same speed distribution. These findings suggested the effectiveness of the pavement marking and an auxiliary indication countermeasure to reduce both rear-end collisions and RLR violations than other countermeasures.

The purpose of this study is to contribute knowledge about how preschool teachers' various professional ethical dilemmasand thoughts about reporting concerns can be looked at and handled. With the help of previous research and that of preschool teachersown perspectives, this will be made visible. The study has been based on the following questions: Whichthe dilemmas preschool teachers describe regarding a report of concern? What kind of support do the preschool teachers describeis requested/given and what significance does it have for how dilemmas around reporting concerns are handled? The choice ofmethod for this study is semi-structured interviews and six preschool teachers have been interviewed individually.The interviews have then been analyzed using a discourse analytical approach with virtue ethics, duty ethics andutilitarian ethics as a theoretical perspective. The results of the study show that dilemmas mainly arise aroundthe support, the approaches and the complex relationship between preschool teachers and guardians andcan have a major impact on whether or not the preschool teacher reports a concern.

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This study aims to provide inexperienced social studies teachers with guidance on the complex issue of social science teachers approach to the subject and the pluralistic dilemma of values. The extent to which one can express one ́s own view of society and the development of society. The three questions this study wants to find answers to are: How do experienced social studies teachers experience that they balance and have balanced value neutrality and values during their professional years? What experienced social studies teachers feel has shaped their understanding and view of the subject? To what extent do teachers feel that their view of society has been given space in their teaching? The method used is life story where the experiences and interpretations of experienced teachers are in focus. It is a hermeneutic approach where the researcher, based on his own prior knowledge, has interpreted the teacher interpretations. The theoretical framework is based on various approaches such as subject biography, reflective practitioners, practical vocational theory, front-line bureaucrats and the wisdom of practise.  The study shows that teacher build up an occupational safety that makes them more independent from control documents. They have a complex understanding of the dilemma and they found a pragmatic path to cope with it. The path is constructed from their own subject biography. But social studies teachers have a unique ability to reflect and argue that their choices could possibly be problematic. Like previous research, this study confirms the view that teacher get more independent the more experienced they get. Further I found that social studies teachers have a complex contextual understanding of society and the democratic dilemma of values. They can change their view in what is important depending on how society develops. The continuity is characterized by their own practical vocational theory that is built on their subject biography. The subject biography is formed during their early years when they were growing up. They notice in one way the benefits that taking in their own perspective and values in the classroom education, but they reflect when and why it could be problematic in another way.

The onset of a yellow indication is typically associated with the risk of vehicle crashes resulting from dilemma-zone and red-light-running problems. Such risk of vehicle crashes is greater for high-speed signalized intersection approaches. The research presented in this dissertation develops statistical as well as behavioral frameworks for modeling driver behavior while approaching high-speed signalized intersection approaches at the onset of a yellow indication. The analysis in this dissertation utilizes two sources of data. The main source is a new dataset that was collected as part of this research effort during the summer of 2008. This experiment includes two instructed speeds; 72.4 km/h (45 mph) with 1727 approaching trials (687 running and 1040 stopping), and 88.5 km/h (55 mph) with 1727 approaching trials (625 running and 1102 stopping). The complementary source is an existing dataset that was collected earlier in the spring of 2005 on the Virginia Smart Road facility. This dataset includes a total of 1186 yellow approaching trials (441 running and 745 stopping). The adopted analysis approach comprises four major parts that fulfill the objectives of this dissertation. The first part is concerned with the characterization of different driver behavioral attributes, including driver yellow/red light running behavior, driver stop-run decisions, driver perception-reaction times (PRT), and driver deceleration levels. The characterization of these attributes involves analysis of variance (ANOVA) and frequency distribution analyses, as well as the calibration of statistical models. The second part of the dissertation introduces a novel approach for computing the clearance interval duration that explicitly accounts for the reliability of the design (probability that drivers do not encounter a dilemma zone). Lookup tables are developed to assist practitioners in the design of yellow timings that reflects the stochastic nature of driver PRT and deceleration levels. An extension of the proposed approach is presented that can be integrated with the IntelliDriveSM initiative. Furthermore, the third part of the dissertation develops an agent-based Bayesian statistics approach to capture the stochastic nature of the driver stop-run decision. The Bayesian model parameters are calibrated using the Markov Chain Monte Carlo (MCMC) slice procedure implemented within the MATLAB® software. In addition, two procedures for the Bayesian model application are illustrated; namely Cascaded regression and Cholesky decomposition. Both procedures are demonstrated to produce replications that are consistent with the Bayesian model realizations, and capture the parameter correlations without the need to store the set of parameter realizations. The proposed Bayesian approach is ideal for modeling multi-agent systems in which each agent has its own unique set of parameters. Finally, the fourth part of the dissertation introduces and validates a state-of-the-art behavioral modeling framework that can be used as a tool to simulate driver behavior after the onset of a yellow indication until he/she reaches the intersection stop line. The behavioral model is able to track dilemma zone drivers and update the information available to them every time step until they reach a final decision. It is anticipated that this behavioral model will be implemented in microscopic traffic simulation software to enhance the modeling of driver behavior as they approach signalized intersections. / Ph. D.

Studiens syfte är att bidra med kunskap och undersöka hur lärare i fritidshems utformning av den dagliga verksamheten påverkas av att uppdraget både efterfrågar måluppfyllelse i enlighet med styrdokument samt elevers frihetsaspekt. Två frågeställningar formulerades: Hur upplever lärare i fritidshem att de främjar elevers måluppfyllelse i utformningen av den dagliga verksamheten? Hur kan lärare i fritidshem möjliggöra elevers frihetsaspekt i utformningen av den dagliga verksamheten? Studien genomfördes utifrån en kvalitativ metod i form av semistrukturerade intervjuer med sex lärare i fritidshem. Insamlade data analyserades med innehållsanalys som metod. Studiens resultat visar olikheter och skillnader i hur lärarna i fritidshem främjar måluppfyllelsen samt möjliggör elevers frihetsaspekt i utformningen av den dagliga verksamheten. Respondenterna uttrycker att uppdraget med måluppfyllelse samt frihetsaspekten påverkas av olika dilemman, vilket gör att uppdraget försvåras. Exempelvis stora barngrupper och fritidshemmets närmande till skolan. Resultatet visar även att lärarna i fritidshem belyser balansgången mellan att främja måluppfyllelsen samt att möjliggöra elevers frihetsaspekt i utformningen av den dagliga verksamheten.