67,931 research outputs found

    Grand Challenges in Shape-Changing Interface Research

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    Shape-changing interfaces have emerged as an new method for interacting with computers, using dynamic changes in a device’s physical shape for input and output. With the advances of research into shape-changing interfaces, we see a need to synthesize the main, open research questions. The purpose of this synthesis is to formulate common challenges across the diverse fields engaged in shape-change research, to facilitate progression from single prototypes and individual design explorations to grander scientific goals, and to draw attention to challenges that come with maturity, including those concerning ethics, theory-building, and societal impact. In this article we therefore present 12 grand challenges for research on shape-changing interfaces, derived from a three-day workshop with 25 shape-changing interface experts with backgrounds in design, computer science, human-computer interaction, engineering, robotics, and material science

    Modular Self-Reconfigurable Robot Systems

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    The field of modular self-reconfigurable robotic systems addresses the design, fabrication, motion planning, and control of autonomous kinematic machines with variable morphology. Modular self-reconfigurable systems have the promise of making significant technological advances to the field of robotics in general. Their promise of high versatility, high value, and high robustness may lead to a radical change in automation. Currently, a number of researchers have been addressing many of the challenges. While some progress has been made, it is clear that many challenges still exist. By illustrating several of the outstanding issues as grand challenges that have been collaboratively written by a large number of researchers in this field, this article has shown several of the key directions for the future of this growing fiel

    Invitation to the Table Conversation: A Few Diverse Perspectives on Integration

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    This article represents an invitation to the integration table to several previously underrepresented perspectives within Christian psychology. The Judeo-Christian tradition and current views on scholarship and Christian faith compel us to extend hospitality to minority voices within integration, thereby enriching and challenging existing paradigms in the field. Contributors to this article, spanning areas of cultural, disciplinary, and theological diversity, provide suggestions for how their distinct voices can enhance future integrative efforts

    Memories for Life: A Review of the Science and Technology

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    This paper discusses scientific, social and technological aspects of memory. Recent developments in our understanding of memory processes and mechanisms, and their digital implementation, have placed the encoding, storage, management and retrieval of information at the forefront of several fields of research. At the same time, the divisions between the biological, physical and the digital worlds seem to be dissolving. Hence opportunities for interdisciplinary research into memory are being created, between the life sciences, social sciences and physical sciences. Such research may benefit from immediate application into information management technology as a testbed. The paper describes one initiative, Memories for Life, as a potential common problem space for the various interested disciplines

    RUR53: an Unmanned Ground Vehicle for Navigation, Recognition and Manipulation

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    This paper proposes RUR53: an Unmanned Ground Vehicle able to autonomously navigate through, identify, and reach areas of interest; and there recognize, localize, and manipulate work tools to perform complex manipulation tasks. The proposed contribution includes a modular software architecture where each module solves specific sub-tasks and that can be easily enlarged to satisfy new requirements. Included indoor and outdoor tests demonstrate the capability of the proposed system to autonomously detect a target object (a panel) and precisely dock in front of it while avoiding obstacles. They show it can autonomously recognize and manipulate target work tools (i.e., wrenches and valve stems) to accomplish complex tasks (i.e., use a wrench to rotate a valve stem). A specific case study is described where the proposed modular architecture lets easy switch to a semi-teleoperated mode. The paper exhaustively describes description of both the hardware and software setup of RUR53, its performance when tests at the 2017 Mohamed Bin Zayed International Robotics Challenge, and the lessons we learned when participating at this competition, where we ranked third in the Gran Challenge in collaboration with the Czech Technical University in Prague, the University of Pennsylvania, and the University of Lincoln (UK).Comment: This article has been accepted for publication in Advanced Robotics, published by Taylor & Franci

    CAST – City analysis simulation tool: an integrated model of land use, population, transport and economics

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    The paper reports on research into city modelling based on principles of Science of Complexity. It focuses on integration of major processes in cities, such as economics, land use, transport and population movement. This is achieved using an extended Cellular Automata model, which allows cells to form networks, and operate on individual financial budgets. There are 22 cell types with individual processes in them. The formation of networks is based on supply and demand mechanisms for products, skills, accommodation, and services. Demand for transport is obtained as an emergent property of the system resulting from the network connectivity and relevant economic mechanisms. Population movement is a consequence of mechanisms in the housing and skill markets. Income and expenditure of cells are self-regulated through market mechanisms and changing patterns of land use are a consequence of collective interaction of all mechanisms in the model, which are integrated through emergence

    Women at the Workplace - The Journey of Three Generations of Women

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    "Women at the Workplace- The Journey of Three Generations of Women", is based on interviews conducted by the authors of a broad cross-section of women in leadership positions, middle management levels as well as women beginning their careers and those making a second start after some years of motherhood. Face to face interviews, each lasting several hours, with 32 women was the main source of information. In only 2 of these 32 cases, a questionnaire was employed. A broad framework was provided to the participants and used as a template for brainstorming. The persons early background, role models, dreams and aspirations, career achievements and the interplay between personal and professional lives was explored. The participants were asked to introspect and explore what success meant to them. A road map for the future for women in organizations was examined. The survey provided a fascinating insight into the minds and hearts of working women. Different women had different motives for working, different dreams and aspirations, different perceptions of the future, different support systems and different hurdles, however, there was also a deep rooted commonality. Looking beneath the surface many common themes and trends emerged for women with different backgrounds, different personality types and varied levels of education, seniority and experience. The human spirit wanted to achieve, to explore and to succeed - only the manifestation of this spirit was different in different cases. An equally strong parallel theme related to fulfillment beyond the realm of professional achievement was prevalent. An underlying need to fulfill maternal and societal roles was observed. The major challenge was to balance these seemingly contradictory aspirations and to achieve happiness. Paths traversed by these 32 women were different, each path equally valid for each person. However, these paths had many crossroads where each individual meets others and then continues on their own path. Till the next crossroad.

    Information Apprenticeship: Integrating Faith and Learning in the Library

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    Librarianship is built on information. As we proceed further into the 21st century, librarians need to understand the concept of “information” as it cannot be easily defined. This paper presents a brief overview of information theory and reviews several concepts proposed by non-librarians. Also, these ideas, when viewed from a Christian perspective can help our understanding of “information.” A review of related scriptures is also included

    Wetting hysteresis induced by nanodefects

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    Wetting of actual surfaces involves diverse hysteretic phenomena stemming from ever-present imperfections. Here, we clarify the origin of wetting hysteresis for a liquid front advancing or receding across an isolated defect of nanometric size. Various kinds of chemical and topographical nanodefects, which represent salient features of actual heterogeneous surfaces, are investigated. The most probable wetting path across surface heterogeneities is identified by combining, within an innovative approach, microscopic classical density functional theory and the string method devised for the study of rare events. The computed rugged free-energy landscape demonstrates that hysteresis emerges as a consequence of metastable pinning of the liquid front at the defects; the barriers for thermally activated defect crossing, the pinning force, and hysteresis are quantified and related to the geometry and chemistry of the defects allowing for the occurrence of nanoscopic effects. The main result of our calculations is that even weak nanoscale defects, which are difficult to characterize in generic microfluidic experiments, can be the source of a plethora of hysteretical phenomena, including the pinning of nanobubbles
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