11,434 research outputs found

    Emotion-centred design : a human factors approach in affective web design : a thesis for fulfilment of a Master of Philosophy degree, College of Design, Fine Arts and Music

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    This thesis hypothesised that a major factor in the failure of many e-Commerce ventures was the lack of emotion imparted into the design, with trust barriers still being to the fore, and a lack of affective human factors like fun, pleasure and joy in the user experience. The human brain often acts emotionally before rationally and this affects initial reactions to experiences and the propensity to purchase online. A key to understanding human-computer communication is that form should follow emotion (as well as function). A wide range of design concepts and theories are analysed for linkages to human emotion due to the exploratory nature of this thesis. Aspects of New Media design such as video, sound, images, colour and virtual reality are covered along with previous research into affective human factors; transferability of emotional elements from other products; and the importance of trust and prevention of negative emotions. Case examples are provided throughout via screenshots and commentary, including a special section on the way that the Nike site has met many emotional design criteria. Research into the opinions of designers and users is undertaken via questionnaires to verify literary findings and measure views on emotional appeal within Websites. It was found that there are misunderstandings of human-computer communication - with designers not meeting user expectations in some areas, even though many designers agree that emotional design is important. In particular, there needs to be a better understanding of how to integrate fun, social contact, colour, trust and sound into designs. Emotion is core to human function, and evolution has seen the emotional parts of the brain grow long before rational areas arose. Given the importance of emotion it is only natural that an emphasis should be placed on it in design philosophies. Whilst some designers are realising the importance of this in consumer products this concept needs to be further emphasised in the world of e-Commerce. Designers surveyed in this thesis were nearly all following a form follows function or a subjective/intuitive design philosophy. However, it was found that there was a good level of support (70%) for emotional design. A gap was established from this fact because only 45% believe they are currently using a high level of emotional design in practice. Chi-square tests showed that there were a number of significant relationships between the level of education and other questionnaire variables such as the importance of colour and recontextualising from car and game design. Establishing trust helps to overcome the core human emotion of fear. Branding, seals of approval and high quality navigation are amongst the elements that can assist in bridging human-computer distrust. Predispositions and previous experiences can also affect initial trust values. Questionnaire results found that designers still believe that lack of trust is a major psychological barrier to purchasing online. Major trust dimensions from previous empirical research were all deemed important. It was also found that users and designers rated trust near the top of emotional themes to concentrate on in Web design. Negative emotions (anger and frustration) can also arise if the design is not inherently usable. Usability was the top-rating design theme amongst designers. There has to be a good balance between the rational and emotional sides. Further negative emotions can be evoked if the site is slow or if there are delays. Speed of loading was amongst the top emotional design elements for both users and designers. It is a difficult line for designers to tread - on one hand using speed to prevent negative emotions, but on the other hand balancing the need for other design elements that generate positive emotions through fun and pleasure characteristics (that might slow things down). Designers involved in this study were very much in agreement with the importance of choosing colours to match the emotions they wanted to evoke in visitors (based on understandings of colour-emotion stereotypes and 'temperatures'). Colour can achieve harmonious interactions or cause rejection by the human brain depending on its application. The survey of users revealed that almost half of the respondents counted colour in their top 5 emotional themes, whereas designers did not think, it was as important as other emotive dimensions. Different cultures may respond differently to metaphorical images, colours, and dimensions such as power-distance and masculinity. Nearly all designers believed that empathising with target users (a part of emotional intelligence) was very important, as was involving users in the design process (usercentred design). Only 50% of users felt that designers were respecting their demographies and culture, so there is still a large number of people who feel they could be more satisfied in this sense. It is proposed that more user testing be carried out in conjunction with frameworks that rate cultural dimensions based on target audiences. The use of video and streaming media was portrayed to be a proposition requiring careful consideration and application by previous non-empirical references. Streaming video can connect with people on an emotional level, bringing in a degree of surprise and variation, and fully highlight the appealing characteristics of the product(s) trying to be sold online. Other New Media technologies such as virtual reality (VR) and 3D have been around for quite awhile (in computer games and scientific applications) but are yet to achieve widespread usage in Website e-Commerce. Some literature is against the use of VR and 3D on the Web but several companies have been receiving accolades in this area because of the ability to bridge an emotional gap between brands and consumers. Questionnaire results showed that most design respondents did not think streaming media, 3D and VR were important in order to gain emotional connections. However, higher bandwidth speeds that will facilitate more use of streaming media and 3D are deemed favourable by designers in terms of increasing emotional appeal. The need for social contact, familiarity and recognition of expressions and gestures led to the proposition of using virtual shop assistants and agents. Contact in the form of live text chat can also fulfil some social needs and plays a big part in portraying trustworthiness since a real person is being interacted with. Designers surveyed in this study were reasonably evenly distributed amongst those in favour, unsure and in disagreement with the use of agents. Surprisingly, given that users would not have had much exposure to virtual agents and characters online, they actually deemed them amongst the highest rating emotional design elements - creating a gap between user expectations and designer actions. Resources revealed that sound can account for a large part of an overall experience. Sound creates mood and atmosphere, and is present in the physical retail environment. Although literature stresses the importance of sound to Web design, designers in this study were of quite the opposite view. Sound was not deemed to be an important experience (near the bottom of ranked emotional dimensions). Users, however, rated sound amongst the middle group of emotional elements. More use of sound is an opportunity for the future. Two broad product ranges - automobiles and computer games - were investigated to see what made them such emotion-centred items. Cars and games evoke feelings of pleasure, fun, flow and fantasy because of their design. Designers favoured interactivity, colour use and fun as gaming elements best applied to Web design. More than half of designer respondents believed that the design of cars and games can be recontextualised into Web design, and most users were definitely in favour of seeing emotional elements they like about cars and games placed into Websites. Dimensions and potential mechanisms for measuring or assessing the emotional intelligence of Websites are proposed, and these include the use of semantic maps to position and compare Websites based on their performance against dimensions such as fun, warmth, trustworthiness, use of colour and the ability to engage users on a social level. The capability of building emotion into a Website is then balanced with the need for high-quality navigation, functionality and usability - as poor efforts in these 'rational' areas can lead to negative emotions and distrust. The design also has to keep in line with the demands of the company wanting the Website built. This study was exploratory - with the aim of bringing out into the open some aspects of New Media e-Commerce design that could he better utilised in order to match the emotions and feelings of customers - potentially leading to higher degrees of sales success. This thesis is therefore hoped to be a catalyst for further study in this area.<

    Multimedia Information Retrieval nelle biblioteche

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    The paper aims to introduce libraries to the view that operating within the terms of traditional Information Retrieval (IR), only through textual language, is limitative, and that considering broader criteria, as those of Multimedia Information Retrieval (MIR), is necessary. The paper stresses the story of MIR fundamental principles, from early years of questioning on documentation to today’s theories on semantic means. New issues for a LIS methodology of processing and searching multimedia documents are theoretically argued, introducing MIR as a holistic whole composed by content-based and semantic information retrieval methodologies. MIR offers a better information searching way: every kind of digital document can be analyzed and retrieved through the elements of language appropriate to its own nature. MIR approach directly handles the concrete content of documents, also considering semantic aspects. Paper conclusions remark the organic integration of the revolutionary contentual conception of information processing with an improved semantics conception, gathering and composing advantages of both systems for accessing to information.L'articolo vuole introdurre le biblioteche alla prospettiva che operare entro i termini dell'Information Retrieval (IR) tradizionale mediante il solo uso del linguaggio testuale è limitativo, e che prendere in considerazione i criteri più ampi del Multimedia Information Retrieval (MIR) è invece necessario. L'articolo illustra la storia dei principi fondamentali del MIR, a partire dai primi anni di dibattito sulla documentazione fino alle teorie odierne sui significati semantici. Vengono dibattute nuovi argomentazioni teoriche per una metodologia LIS di trattamento e ricerca di documenti multimediali, proponendo il MIR come un tutto olistico composto da metolodogie di information retrieval semantico e basato sul contenuto. Il MIR offre modalità di ricerca migliori: ogni tipologia di documento digitale può essere analizzata e recuperata attraverso elementi del linguaggio appropriato alla sua specifica natura. L'approccio del MIR si basa sulla gestione diretta del contenuto dei documenti, considerando anche gli aspetti semantici. Le conclusioni dell'articolo rimarcano l'integrazione organica della rivoluzione della concezione di tipo contenutistico del trattamento dell'informazione con una concezione semantica migliorata, raccogliendo e componendo i vantaggi di entrambi i sistemi per l'accesso all'informazione

    Between Naturalism and Theism: Johnston and Putnam on the Reality of God

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    The essay compares mark Johnston’s and Hilary Putnam’s approaches to the philosophy of religion in the framework of Charles Taylor’s claim that in modernity ”intermediate positions’ between theism and naturalism become increasingly attractive for a growing amount of people. both authors show that intermediate positions between naturalism and theism are conceptually plausible without having to deny that the conflicting worldviews are about a mind-independent reality. Johnston bridges the gap between naturalism and theism by developing a panentheistic worldview, Putnam denies the necessity of bridging it by choosing an attitude toward the world that allows for the coexistence of at least partly incommensurable conceptualizations of what there is. In both cases the conceptual exploration of intermediate positions is fed by the authors’ commitment to intellectual integrity in coming to terms with the tension between scientific explanation and religious interpretation in the age of applied sciences

    Automated compliance checking in healthcare building design

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    Regulatory frameworks associated to building design are usually complex, representing extensive sets of requirements. For healthcare projects in the UK, this includes statutory and guidance documents. Existing research indicates that they contain subjective requirements, which challenge the practical adoption of automated compliance checking, leading to limited outcomes. This paper aims to propose recommendations for the adoption of automated compliance checking in the design of healthcare buildings. Design Science Research was used to gain a detailed understanding of how information from existing regulatory requirements affects automation, through an empirical study in the design of a primary healthcare facility. In this study, a previously proposed taxonomy was implemented and refined, resulting in the identification of different types of subjective requirements. Based on empirical data emerging from the research, a set of recommendations was proposed focusing on the revision of regulatory documents, as well as to aid designers implementing automated compliance in practice

    Synchronous Online Philosophy Courses: An Experiment in Progress

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    There are two main ways to teach a course online: synchronously or asynchronously. In an asynchronous course, students can log on at their convenience and do the course work. In a synchronous course, there is a requirement that all students be online at specific times, to allow for a shared course environment. In this article, the author discusses the strengths and weaknesses of synchronous online learning for the teaching of undergraduate philosophy courses. The author discusses specific strategies and technologies he uses in the teaching of online philosophy courses. In particular, the author discusses how he uses videoconferencing to create a classroom-like environment in an online class

    Conceptual graph-based knowledge representation for supporting reasoning in African traditional medicine

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    Although African patients use both conventional or modern and traditional healthcare simultaneously, it has been proven that 80% of people rely on African traditional medicine (ATM). ATM includes medical activities stemming from practices, customs and traditions which were integral to the distinctive African cultures. It is based mainly on the oral transfer of knowledge, with the risk of losing critical knowledge. Moreover, practices differ according to the regions and the availability of medicinal plants. Therefore, it is necessary to compile tacit, disseminated and complex knowledge from various Tradi-Practitioners (TP) in order to determine interesting patterns for treating a given disease. Knowledge engineering methods for traditional medicine are useful to model suitably complex information needs, formalize knowledge of domain experts and highlight the effective practices for their integration to conventional medicine. The work described in this paper presents an approach which addresses two issues. First it aims at proposing a formal representation model of ATM knowledge and practices to facilitate their sharing and reusing. Then, it aims at providing a visual reasoning mechanism for selecting best available procedures and medicinal plants to treat diseases. The approach is based on the use of the Delphi method for capturing knowledge from various experts which necessitate reaching a consensus. Conceptual graph formalism is used to model ATM knowledge with visual reasoning capabilities and processes. The nested conceptual graphs are used to visually express the semantic meaning of Computational Tree Logic (CTL) constructs that are useful for formal specification of temporal properties of ATM domain knowledge. Our approach presents the advantage of mitigating knowledge loss with conceptual development assistance to improve the quality of ATM care (medical diagnosis and therapeutics), but also patient safety (drug monitoring)

    The Evolution of Interpretive Contexts in Stories

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    Modeling the effect of context on interpretation, for the purposes of building intelligent systems, has been a long-standing problem: qualities of logic can restrict accurate contextual interpretation, even when there is only one context to consider. Stories offer a range of structures that could extend formal theories of context, indicating how arrays of inferred contexts are able to knit together, making an ontological reference that is specific to the particular set of circumstances embodied in the tale. This derived ontology shifts as the text unfolds, enabling constant revision and the emergence of unexpected meanings. The described approach employs dynamic knowledge representation techniques to model how these structures are built and changed. Two new operators have been designed for this purpose: governance and causal conceptual agents. As an example, a few lines from the story Red Riding Hood As a Dictator Would Tell It are used to demonstrate how a story interpretive framework can be continually re-made, in a way that produces unexpected interpretations of terms

    Context Aware Computing for The Internet of Things: A Survey

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    As we are moving towards the Internet of Things (IoT), the number of sensors deployed around the world is growing at a rapid pace. Market research has shown a significant growth of sensor deployments over the past decade and has predicted a significant increment of the growth rate in the future. These sensors continuously generate enormous amounts of data. However, in order to add value to raw sensor data we need to understand it. Collection, modelling, reasoning, and distribution of context in relation to sensor data plays critical role in this challenge. Context-aware computing has proven to be successful in understanding sensor data. In this paper, we survey context awareness from an IoT perspective. We present the necessary background by introducing the IoT paradigm and context-aware fundamentals at the beginning. Then we provide an in-depth analysis of context life cycle. We evaluate a subset of projects (50) which represent the majority of research and commercial solutions proposed in the field of context-aware computing conducted over the last decade (2001-2011) based on our own taxonomy. Finally, based on our evaluation, we highlight the lessons to be learnt from the past and some possible directions for future research. The survey addresses a broad range of techniques, methods, models, functionalities, systems, applications, and middleware solutions related to context awareness and IoT. Our goal is not only to analyse, compare and consolidate past research work but also to appreciate their findings and discuss their applicability towards the IoT.Comment: IEEE Communications Surveys & Tutorials Journal, 201
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