357 research outputs found

    A survey of visual preprocessing and shape representation techniques

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    Many recent theories and methods proposed for visual preprocessing and shape representation are summarized. The survey brings together research from the fields of biology, psychology, computer science, electrical engineering, and most recently, neural networks. It was motivated by the need to preprocess images for a sparse distributed memory (SDM), but the techniques presented may also prove useful for applying other associative memories to visual pattern recognition. The material of this survey is divided into three sections: an overview of biological visual processing; methods of preprocessing (extracting parts of shape, texture, motion, and depth); and shape representation and recognition (form invariance, primitives and structural descriptions, and theories of attention)

    A health-oriented emotion-centred origami-based PSS concept. A product-service system concept aimed to help users manage and reduce their stress more tangibly to improve their health and well-being.

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    Emotions have a fundamental role in the experience, perception, cognition, and development of people (Barrett et al., 2016; Plutchik, 2001). Negative emotions such as stress, if not managed appropriately, may be a risk factor in developing diseases such as dementia, cardiovascular problems, and depression, amongst others (Dum et al., 2016; Sandi et al., 2001). This interdisciplinary research presents OrigamEase, a health-oriented emotion-centred origami-based PSS concept to help adults manage their stress more tangibly, in response to its main research question: How can engineering design research contribute to improving people’s emotional health and wellbeing? OrigamEase was designed throughout this research, and its design and testing served to develop a health & well-being oriented, emotion-centred engineering design methodology (HWOEED). Therefore, the design of this methodology is the result of the structuring and ordering of the developmental process of exploring, conducting and streamlining the research, design and testing of OrigamEase. The design of OrigamEase (both the product and the service part) is based on the cognitive research stream of emotions and stress. Therefore, this research also aims to broaden the knowledge about the implications and management of the emotional experience of stress from an engineering and design point of view, complementing the available solutions for stress management through a structured, measurable, and tangible tool. The HWOEED methodology is influenced by Kansei Engineering and Design Thinking methodologies and integrates various engineering design research methods. However, this methodology proposes a different application of the integration of emotional considerations into engineering design processes., it seeks to improve the emotional experience of users to preserve and promote their health and well-being through specifically designed products, services or PSS. Therefore, these designs become the means and not the end of the engineering design efforts. Also, this methodology can be transferrable to other engineering design solutions. OrigamEase was tested with 114 adults between 18 and 70 years old through three pilot tests (n=43) and six trial tests (n=71) using a concurrent triangulation mixed methods design. Then the results from these tests were contrasted with two control tests (n=22). The results show that using OrigamEase reduced the measured stress levels of participants (self-reported, heart rate and electrodermal activity) significantly, supporting the experiment hypothesis. Stress levels were recorded before and after using OrigamEase; then, a repeated-measures t-test was applied to find if these differences were significant or not. After using OrigamEase, 73.2% of participants reported feeling less stressed (mean reduction=13.94%), 85.5% experienced a reduction in their heart rate (mean reduction=9.8 bpm), and 78.9% had a lower electrodermal activity (mean reduction= 10.8 points). The testing of OrigamEase served as an initial application validation of the HWOEED methodology. This research demonstrates that engineering and design fields not only can but need to contribute to research on emotions through interdisciplinary research. Emotions are a fundamental part of all human experiences, impacting a person’s health and well-being profoundly

    KINE[SIS]TEM'17 From Nature to Architectural Matter

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    Kine[SiS]tem – From Kinesis + System. Kinesis is a non-linear movement or activity of an organism in response to a stimulus. A system is a set of interacting and interdependent agents forming a complex whole, delineated by its spatial and temporal boundaries, influenced by its environment. How can architectural systems moderate the external environment to enhance comfort conditions in a simple, sustainable and smart way? This is the starting question for the Kine[SiS]tem’17 – From Nature to Architectural Matter International Conference. For decades, architectural design was developed despite (and not with) the climate, based on mechanical heating and cooling. Today, the argument for net zero energy buildings needs very effective strategies to reduce energy requirements. The challenge ahead requires design processes that are built upon consolidated knowledge, make use of advanced technologies and are inspired by nature. These design processes should lead to responsive smart systems that deliver the best performance in each specific design scenario. To control solar radiation is one key factor in low-energy thermal comfort. Computational-controlled sensor-based kinetic surfaces are one of the possible answers to control solar energy in an effective way, within the scope of contradictory objectives throughout the year.FC

    Healing Racial Trauma and Reframing the Miseducation of U.S. America: Altering Exclusionary Textbooks as a Therapeutic Experiential

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    This exploratory mixed-methods, arts-based research investigated the therapeutic impact of fusing art therapy, group therapy, altered book making and alternative therapeutic modalities on self-efficacy, self- awareness, community efficacy and awareness, and reduction of racial trauma symptomology. The intention of the study was to understand the experiences of mental health professional participants (n =5), consequent to four therapeutic group sessions. Participants disclosed experienced symptoms of race-based PTSD pre and post sessions via the University of Connecticut Racial/Ethnic Trauma Survey, in addition to qualitative data. Qualitative data consisted of artwork, written responses, and exit interviews confirming the hypothesis that this radical healing experiential would be cathartically empowering and renewing for participants, fostering a renewed perspective of their self and community efficacy and awareness. The findings determined intersectional implications for future research, art therapy psychology, and the field of education to facilitate research on new healing experientials to reduce symptomology of racial trauma, and to challenge and change the omissive and emotionally abusive status quo. Keywords: art-based research, art therapy psychology, altered book making, critical consciousness, intersectionality, narrative theory, racial trauma, race-based trauma, radical healing, self- efficacy, public educatio

    Bioinspired Origami: Information Retrieval Techniques for Design of Foldable Engineering Applications

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    The science of folding has inspired and challenged scholars for decades. Origami, the art of folding paper, has led to the development of many foldable engineering solutions with applications in manufacturing, materials, and product design. Interestingly, three fundamental origami crease patterns are analogous to folding observed in nature. Numerous folding patterns, structures, and behaviors exist in nature that have not been considered for engineering solutions simply because they are not well-known or studied by designers. While research has shown applying biological solutions to engineering problems is significantly valuable, various challenges prevent the transfer of knowledge from biology to the engineering domain. One of those challenges is the retrieval of useful design inspiration. In this dissertation work, information retrieval techniques are employed to retrieve useful biological design solutions and a text-based search algorithm is developed to return passages where folding in nature is observed. The search algorithm, called FoldSearch, integrates tailored biological keywords and filtering methods to retrieve passages from an extensive biological corpus. The performance of FoldSearch is evaluated using statistical methods for information retrieval and validated using inter-rater reliability analysis. The utility of FoldSearch is demonstrated through two case studies where the retrieved biological examples undergo a design abstraction process that leads to the development of bioinspired origami crease patterns and novel foldable structures. The design abstraction process is presented as an additional research contribution and demonstrates the potential to provide bioinspired design solutions for the growing research field of origami engineering

    Annual Report of Undergraduate Research Fellows, August 2013 to May 2014

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    Annual Report of Undergraduate Research Fellows from August 2013 to May 2014

    MATERIALIZING MAKERSPACES: QUEERLY COMPOSING SPACE, TIME, AND (WHAT) MATTERS

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    This dissertation project explores makerspaces as non-traditional composing networks where makers work with (and against) unconventional digital and physical materials such as vinyl, cut paper, plastic filament, insects, Xacto blades, pipe cleaners, reclaimed wicker baskets, DNA, Python code, memes, and Raspberry Pi’s. Choosing materiality over multimodality as the best frame for understanding the material-discursive composing practices of makers, I build a queer- and feminist-inflected new materialist research methodology that orients attention toward embodiment, affect, and the production of difference in composing networks. Using playful, game-based data collection protocols, in conjunction with more traditional data sources, as well as three-dimensional analysis models crafted from foam board, yarn, safety pins, and paper, I document and analyze the material and affective dimensions of composing to build case studies around two diverse maker networks. The first case details participants’ making and composing experiences as part of a connectivist MOOC designed to increase STEM/STEAM literacies for underserved youth and youth educators. The second explores high school students’ experiences in “pop-up� makerspaces that are oriented toward 3D fabrication and prototyping; circuitry, robotics, and computer coding; and upcycling discarded objects and everyday waste for new audiences, purposes, and contexts. Both case studies address the following research questions: Who and what gets to make? Who and what gets made? What drives composition (as process and product) in the network? These questions are essential for understandings issues of representation, access, and equity in contemporary maker networks. The findings of this dissertation materialize “making� as more than a boot-strapping rhetoric that sponsors middle class white male literacies. They underscore the collective values, stances, and practices that are necessary for composing networks to become networkings which are capable of materializing a diversity of bodies and objects. This project turns Writing Studies toward a more material, embodied, and affective understanding of composing, and points to the need to rethink normative composition pedagogies that work to foreclose diversity, creativity, and experimentation. I conclude this project by articulating a queer material rhetoric I call composing sideways: this rhetoric makes space for lateral thinking, feeling, and composing practices which focus on composing the here and the now, and resisting vertical transfer as the most important pedagogical outcome for a writing classroom

    More playful user interfaces:interfaces that invite social and physical interaction

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