Giving effective instructional explanations is one of the most important teacher competences. Recent di dactic literature provides, however, little insight on teacher explanations. In our previous work we devel- oped guidelines for designing comprehensible explanations in the field of business (teacher) education, which are along general lines transferable to other subject areas and target audiences. In this article, we first compare our guidelines to the state of research in general and mathematics didactics. We then in vestigate their applicability to teaching operations research at university level, based on interviews with professors of the international operations research community.

<p>This work focuses on the socio-technical aspects of artificial intelligence, namely how (specific types of) intelligent systems function in human workplace environments. The goal is first to get a better understanding of human needs and expectations when it comes to interaction with intelligent systems, and then to make use of the understanding gained in the process of designing and implementing such systems.</p><p>The work presented focusses on a specific problem in developing intelligent systems, namely how the artefacts to be developed can fit smoothly into existing socio-cultural settings. To achieve this, we make use of theories from the fields of organisational psychology, sociology, and linguistics. This is in line with approaches commonly found in AI. However, most of the existing work deals with individual aspects, like how to mimic the behaviour or emulate methods of reasoning found in humans, whereas our work centers around the social aspect. Therefore, we base our work on theories that have not yet gained much attention in intelligent systems design. To be able to make them fruitful for intelligent systems research and development, we have to adapt them to the specific settings, and we have to transform them to suit the practical problems at hand.</p><p>The specific theoretical frameworks we draw on are first and foremost activity theory and to a lesser degree semiotics. Activity theory builds on the works of Leont'ev. It is a descriptive tool to help understand the unity of consciousness and activity. Its focus lies on individual and collective work practise. One of its strengths, and the primary reason for its value in AI development, is the ability to identify the role of material artefacts in the work process. Halliday's systemic functional theory of language (SFL) is a social semiotic theory that sets out from the assumption that humans are social beings that are inclined to interact and that this interaction is inherently multimodal. We interact not just with each other, but with our own constructions and with our natural world. These are all different forms of interaction, but they are all sign processes.</p><p>Due to the obvious time and spatial constraints, we cannot address all of the challenges that we face when building intelligent artefacts. In reducing the scope of the thesis, we have focused on the problem of explanation, and here in particular the problem of explanation from a user perspective. By putting social theories to work in the field of artificial intelligence, we show that results from other fields can be beneficial in understanding what explanatory capabilities are needed for a given intelligent system, and to ascertain in which situations an explanation should be delivered. Besides lessons learned in knowledge based system development, the most important input comes from activity theory.</p><p>The second focus is the challenge of contextualisation. Here we show that work in other scientific fields can be put to use in the development of context aware or ambient intelligent systems. Again, we draw on results from activity theory and combine this with insights from semiotics.</p><p>Explanations are themselves contextual, so the third challenge is to explore the space spanned by the two dimensions ability to explain and contextualisation. Again, activity theory is beneficial in resolving this issue.</p><p>The different theoretical considerations have also led to some practical approaches. Working with activity theory helps to better understand what the relevant contextual aspects of a given application are and helps to develop models of context which are both grounded in the tradition of context aware systems design and are plausible from a cognitive point of view.</p><p>Insights from an analysis of research in the knowledge based system area and activity theory have further lead to the amendment of a toolbox for requirements engineering, so called problem frames. New problem frames that target explanation aware ambient intelligent systems are presented. This is supplemented with work looking at the design of an actual system after the requirements have been elicited and specified. Thus, the socio-technical perspective on explanations is coupled with work that addresses knowledge representation issues, namely how to model sufficient knowledge to be able to deliver explanations.</p>

<p>This thesis deals with idioms taken from contemporary newspapers. The purpose is to find out which idioms are known and used by native speakers of different ages and also to what extent the entries in the dictionaries offer accurate descriptions to the meaning of these idioms. We already know that idioms which have been modified, as often is the case in newspapers, are often more difficult to understand than others.</p><p>The study has been conducted by means of questionnaires answered by native speakers in Germany. In order to assess the ability that German native speakers have to understand and use these idioms, I have chosen informants from three age groups; the first two groups of informants are grammar school students at a German Gymnasium, in the 7 and the 10 form respectively and the last group consists of adult speakers in Germany with university education. This last group conforms to the final phase of language acquisition.</p><p>The results clearly show that younger generations - and to a certain extent older students and indeed educated adults - are less likely to understand idioms which have complex explanations in the dictionaries and/or whose meanings have been modified. Similarly, all age groups are more likely to understand idioms with simple explanations, those which appear frequently on the Internet and those whose meanings have not been modified, though there is a higher degree of “tolerance” when it comes to complex idioms among the adults.</p><p>It is also clear that the meaning of an idiom cannot always be fully explained out of context. In most cases dictionaries offer an explanation that functions in most contexts, yet it is not uncommon for the meaning of an idiom to be complex and to vary more or less depending on the context. As a way to find out how frequent the idioms are, I have compared their frequency in www.Google.de and found that there is a clear correlation between high frequency in Google and the knowledge displayed by the informants.</p>

This essay is concerned with two explanations of why oppressive social orders persist. According to the first, the so-called gunman theory of oppression (GT), these social orders persist because the oppressed are afraid being punished if they participated in a revolt. According to the second, the so-called ideology theory of oppression (IT), oppression persists because the oppressed are subject to ideology. Traditionally, the former has been associated with rational choice theory, and the latter with Marxism and critical theory. Analytical philosophers have been suspicious of IT since it involves functional claims. This essay shows that it is possible to make sense of both IT and its associated functional claim within the framework of rational choice theory. Chapter one provides an overview of the discussion and a presentation of the general argument against IT. Chapter two specifies the explanandum for the two theories in more detail. The chapter concludes with a description of three real-life persistent oppressive social orders. In chapter three, the basics of rational choice theory are introduced and GT spelled out. Some problems for the theory are identified and then dealt with. It is concluded that GT does a good job at explaining the persistence of tyrannies. Chapter four argues that ideology is necessary to provide satisfactory explanations of the other two cases of oppression described in chapter two. The chapter concludes with a specification of IT where the functional claim is made explicit. Chapter five defends Gerald Cohen's account of functional explanations against a dilemma formulated by Ann Cudd. In chapter six, three mechanisms are provided that indicate how the functional claim of IT can be demystified. Chapter seven concludes by indicating a statistical method for testing IT and describing some policy implications. / EXPLANATIONS OF REPRESSION BY A MINORITY OF THE MAJORITY — A RESEARCH PROGRAM

This thesis deals with idioms taken from contemporary newspapers. The purpose is to find out which idioms are known and used by native speakers of different ages and also to what extent the entries in the dictionaries offer accurate descriptions to the meaning of these idioms. We already know that idioms which have been modified, as often is the case in newspapers, are often more difficult to understand than others. The study has been conducted by means of questionnaires answered by native speakers in Germany. In order to assess the ability that German native speakers have to understand and use these idioms, I have chosen informants from three age groups; the first two groups of informants are grammar school students at a German Gymnasium, in the 7 and the 10 form respectively and the last group consists of adult speakers in Germany with university education. This last group conforms to the final phase of language acquisition. The results clearly show that younger generations - and to a certain extent older students and indeed educated adults - are less likely to understand idioms which have complex explanations in the dictionaries and/or whose meanings have been modified. Similarly, all age groups are more likely to understand idioms with simple explanations, those which appear frequently on the Internet and those whose meanings have not been modified, though there is a higher degree of “tolerance” when it comes to complex idioms among the adults. It is also clear that the meaning of an idiom cannot always be fully explained out of context. In most cases dictionaries offer an explanation that functions in most contexts, yet it is not uncommon for the meaning of an idiom to be complex and to vary more or less depending on the context. As a way to find out how frequent the idioms are, I have compared their frequency in www.Google.de and found that there is a clear correlation between high frequency in Google and the knowledge displayed by the informants.

This work focuses on the socio-technical aspects of artificial intelligence, namely how (specific types of) intelligent systems function in human workplace environments. The goal is first to get a better understanding of human needs and expectations when it comes to interaction with intelligent systems, and then to make use of the understanding gained in the process of designing and implementing such systems. The work presented focusses on a specific problem in developing intelligent systems, namely how the artefacts to be developed can fit smoothly into existing socio-cultural settings. To achieve this, we make use of theories from the fields of organisational psychology, sociology, and linguistics. This is in line with approaches commonly found in AI. However, most of the existing work deals with individual aspects, like how to mimic the behaviour or emulate methods of reasoning found in humans, whereas our work centers around the social aspect. Therefore, we base our work on theories that have not yet gained much attention in intelligent systems design. To be able to make them fruitful for intelligent systems research and development, we have to adapt them to the specific settings, and we have to transform them to suit the practical problems at hand. The specific theoretical frameworks we draw on are first and foremost activity theory and to a lesser degree semiotics. Activity theory builds on the works of Leont'ev. It is a descriptive tool to help understand the unity of consciousness and activity. Its focus lies on individual and collective work practise. One of its strengths, and the primary reason for its value in AI development, is the ability to identify the role of material artefacts in the work process. Halliday's systemic functional theory of language (SFL) is a social semiotic theory that sets out from the assumption that humans are social beings that are inclined to interact and that this interaction is inherently multimodal. We interact not just with each other, but with our own constructions and with our natural world. These are all different forms of interaction, but they are all sign processes. Due to the obvious time and spatial constraints, we cannot address all of the challenges that we face when building intelligent artefacts. In reducing the scope of the thesis, we have focused on the problem of explanation, and here in particular the problem of explanation from a user perspective. By putting social theories to work in the field of artificial intelligence, we show that results from other fields can be beneficial in understanding what explanatory capabilities are needed for a given intelligent system, and to ascertain in which situations an explanation should be delivered. Besides lessons learned in knowledge based system development, the most important input comes from activity theory. The second focus is the challenge of contextualisation. Here we show that work in other scientific fields can be put to use in the development of context aware or ambient intelligent systems. Again, we draw on results from activity theory and combine this with insights from semiotics. Explanations are themselves contextual, so the third challenge is to explore the space spanned by the two dimensions ability to explain and contextualisation. Again, activity theory is beneficial in resolving this issue. The different theoretical considerations have also led to some practical approaches. Working with activity theory helps to better understand what the relevant contextual aspects of a given application are and helps to develop models of context which are both grounded in the tradition of context aware systems design and are plausible from a cognitive point of view. Insights from an analysis of research in the knowledge based system area and activity theory have further lead to the amendment of a toolbox for requirements engineering, so called problem frames. New problem frames that target explanation aware ambient intelligent systems are presented. This is supplemented with work looking at the design of an actual system after the requirements have been elicited and specified. Thus, the socio-technical perspective on explanations is coupled with work that addresses knowledge representation issues, namely how to model sufficient knowledge to be able to deliver explanations.

The past two decades have resulted in an increase in international trade, capital flows and cross-border economic integrations. These phenomena have increased the demand for harmonized international accounting standards aimed at creating an efficient resource allocation, worldwide. The adoption of International Financial Reporting Standards (IFRS) is the result of a process towards a greater accounting harmonization. In Sweden, there are four categories of firms that apply IFRS; three are regulated by law, while the fourth are voluntary applying IFRS. The aim of this study is to find out which factors explain why firms voluntarily apply IFRS. By doing one quantitative and one qualitative study of the firms listed on the Swedish unregulated capital markets, we have found that there are 84 firms that voluntarily apply IFRS, that is 35 percent. The significant factors explaining the voluntarily application of IFRS are the use of an audit firm within the big four (PricewaterhouseCoopers, KPMG, Ernst &amp; Young and Deloitte) and the number of firms within the same industry that voluntarily applies IFRS. Their voluntary application of IFRS has been explained to primarily depend on the advantages increased internal control, a more extensive and detailed annual report and more investors. In addition, the use of IFRS indicates quality and the firm will  be seen as a good corporate citizen.

The current paper presents a study conducted at CERN, Switzerland, to investigate visitors' and tour guides' use and appreciation of existing panels at visit itinerary points. The results were used to develop a set of recommendations for constructing optimal panels to assist the guides' explanation.

<p>The essay begins by asserting that the theoretical approaches of men’s violence against women are just as important to study as its extent. The purpose is therefore to analyse and compare two theoretical approaches which is done by a comparative text analysis of two texts written on the subject. The essay attempts to answer two questions; what the theoretical approaches are and how they can be understood in light of feminist theory.</p><p>Previous research on men’s violence against women discuss especially three theoretical aspects. These are how the concept is defined, if the different forms of violence are being treated separately or not, and how it is explained. These aspects are used as the basis for the analysis which is conducted in two steps.</p><p>The result shows that the theoretical approaches analysed share many similarities with both each other and the feminist theory. All apply a broad definition, hold the different forms of violence together, and consider the most basic explanation for the violence to be the unequal power structure between the sexes. The biggest difference between the two theoretical approaches and the feminist theory is that the former also emphasizes other explanatory levels as well as the purely structural.</p>

To facilitate everyday activities, context-aware applications use sensors to detect what is happening and use increasingly complex mechanisms (e.g., by using big rule-sets or machine learning) to infer the user's context and intent. For example, a mobile application can recognize that the user is in a conversation and suppress any incoming calls. When the application works well, this implicit sensing and complex inference remain invisible. However, when it behaves inappropriately or unexpectedly, users may not understand its behavior. This can lead users to mistrust, misuse, or even abandon it. To counter this lack of understanding and loss of trust, context-aware applications should be intelligible, capable of explaining their behavior. We investigate providing intelligibility in context-aware applications and evaluate its usefulness to improve user understanding and trust in context-aware applications. Specifically, this thesis supports intelligibility in context-aware applications through the provision of explanations that answer different question types, such as: Why did it do X? Why did it not do Y? What if I did W, What will it do? How can I get the application to do Y? This thesis takes a three-pronged approach to investigating intelligibility by (i) eliciting the user requirements for intelligibility, to identify what explanation types end-users are interested in asking context-aware applications, (ii) supporting the development of intelligible context-aware applications with a software toolkit and the design of these applications with design and usability recommendations, and (iii) evaluating the impact of intelligibility on user understanding and trust under various situations and application reliability, and measuring how users use an interactive intelligible prototype. We show that users are willing to use well-designed intelligibility features, and this can improve user understanding and trust in the adaptive behavior of context-aware applications.