60,930 research outputs found

    Parental perspectives of students' strengths in transition planning

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    The most recent revision of the Individuals with Disabilities in Education Act (IDEA) mandates that students’ strengths be considered in the transition planning process for students with disabilities; however, there is evidence that individuals’ strengths are not being utilized to support their transition to adulthood (Shogren & Plotner, 2012; Landmark & Zhang, 2012). Strengths refer to all of an individual’s assets, both personal and contextual, that improve that individual’s ability to function (Davis et al., 2007; McCammon, 2012). Parents have unique perspectives of their sons’ and daughters’ strengths (Carter, Brock, & Trainor, 2014) and have the potential to influence the transition planning process in a positive way. This study used qualitative methods to understand how parents describe their son or daughter’s strengths, both personal and contextual, in relation to transition planning. Findings indicated that parents identify equal amounts of personal and contextual strengths for their children. However, strengths were described as being context dependent; the trait or resource described as an asset in one aspect of transitioning to adult life was also described as a barrier to another aspect. These findings highlighted the value of including parents in the transition planning process and that students have many strengths available for consideration as they enter adult life

    Average Energy Efficiency Contours for Single Carrier AWGN MAC

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    Energy efficiency has become increasingly important in wireless communications, with significant environmental and financial benefits. This paper studies the achievable capacity region of a single carrier uplink channel consisting of two transmitters and a single receiver, and uses average energy efficiency contours to find the optimal rate pair based on four different targets: Maximum energy efficiency, a trade-off between maximum energy efficiency and rate fairness, achieving energy efficiency target with maximum sum-rate and achieving energy efficiency target with fairness. In addition to the transmit power, circuit power is also accounted for, with the maximum transmit power constrained to a fixed value. Simulation results demonstrate the achievability of the optimal energy-efficient rate pair within the capacity region, and provide the trade-off for energy efficiency, fairness and maximum sum-rate

    Past, Present, and Future of Simultaneous Localization And Mapping: Towards the Robust-Perception Age

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    Simultaneous Localization and Mapping (SLAM)consists in the concurrent construction of a model of the environment (the map), and the estimation of the state of the robot moving within it. The SLAM community has made astonishing progress over the last 30 years, enabling large-scale real-world applications, and witnessing a steady transition of this technology to industry. We survey the current state of SLAM. We start by presenting what is now the de-facto standard formulation for SLAM. We then review related work, covering a broad set of topics including robustness and scalability in long-term mapping, metric and semantic representations for mapping, theoretical performance guarantees, active SLAM and exploration, and other new frontiers. This paper simultaneously serves as a position paper and tutorial to those who are users of SLAM. By looking at the published research with a critical eye, we delineate open challenges and new research issues, that still deserve careful scientific investigation. The paper also contains the authors' take on two questions that often animate discussions during robotics conferences: Do robots need SLAM? and Is SLAM solved

    An optimization framework for solving capacitated multi-level lot-sizing problems with backlogging

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    This paper proposes two new mixed integer programming models for capacitated multi-level lot-sizing problems with backlogging, whose linear programming relaxations provide good lower bounds on the optimal solution value. We show that both of these strong formulations yield the same lower bounds. In addition to these theoretical results, we propose a new, effective optimization framework that achieves high quality solutions in reasonable computational time. Computational results show that the proposed optimization framework is superior to other well-known approaches on several important performance dimensions

    Return to Dollar, Generalized Distance Function and the Fisher Productivity Index

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    Exploring the duality between a return to dollar definition of profit and the generalized distance function we establish the relationship between the Laspeyres, Paasche and Fisher productivity indexes and their alternative Malmquist indexes counterparts. By proceeding this way, we propose a consistent decomposition of these productivity indexes into two mutually exclusive components. A technical component represented by the Malmquist index and an economical component which can be identified with the contribution that allocative criteria make to productivity change. With regard to the Fisher index, we indicate how researchers can further decompose the Malmquist technical component rendering explicit the sources of productivity change. We also show how the proposed model can be implemented by means of Data Envelopment Analysis techniques, and illustrate the empirical process with an example data set.Generalized Distance Function; Return to Dollar; Fisher and Malmquist Productivity Indexes
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