13,890 research outputs found
Ground Robotic Hand Applications for the Space Program study (GRASP)
This document reports on a NASA-STDP effort to address research interests of the NASA Kennedy Space Center (KSC) through a study entitled, Ground Robotic-Hand Applications for the Space Program (GRASP). The primary objective of the GRASP study was to identify beneficial applications of specialized end-effectors and robotic hand devices for automating any ground operations which are performed at the Kennedy Space Center. Thus, operations for expendable vehicles, the Space Shuttle and its components, and all payloads were included in the study. Typical benefits of automating operations, or augmenting human operators performing physical tasks, include: reduced costs; enhanced safety and reliability; and reduced processing turnaround time
Research and Education in Computational Science and Engineering
Over the past two decades the field of computational science and engineering
(CSE) has penetrated both basic and applied research in academia, industry, and
laboratories to advance discovery, optimize systems, support decision-makers,
and educate the scientific and engineering workforce. Informed by centuries of
theory and experiment, CSE performs computational experiments to answer
questions that neither theory nor experiment alone is equipped to answer. CSE
provides scientists and engineers of all persuasions with algorithmic
inventions and software systems that transcend disciplines and scales. Carried
on a wave of digital technology, CSE brings the power of parallelism to bear on
troves of data. Mathematics-based advanced computing has become a prevalent
means of discovery and innovation in essentially all areas of science,
engineering, technology, and society; and the CSE community is at the core of
this transformation. However, a combination of disruptive
developments---including the architectural complexity of extreme-scale
computing, the data revolution that engulfs the planet, and the specialization
required to follow the applications to new frontiers---is redefining the scope
and reach of the CSE endeavor. This report describes the rapid expansion of CSE
and the challenges to sustaining its bold advances. The report also presents
strategies and directions for CSE research and education for the next decade.Comment: Major revision, to appear in SIAM Revie
Efficient Synthesis of Room Acoustics via Scattering Delay Networks
An acoustic reverberator consisting of a network of delay lines connected via
scattering junctions is proposed. All parameters of the reverberator are
derived from physical properties of the enclosure it simulates. It allows for
simulation of unequal and frequency-dependent wall absorption, as well as
directional sources and microphones. The reverberator renders the first-order
reflections exactly, while making progressively coarser approximations of
higher-order reflections. The rate of energy decay is close to that obtained
with the image method (IM) and consistent with the predictions of Sabine and
Eyring equations. The time evolution of the normalized echo density, which was
previously shown to be correlated with the perceived texture of reverberation,
is also close to that of IM. However, its computational complexity is one to
two orders of magnitude lower, comparable to the computational complexity of a
feedback delay network (FDN), and its memory requirements are negligible
Constructivist Multi-Access Lab Approach in Teaching FPGA Systems Design with LabVIEW
Embedded systems play vital role in modern
applications [1]. They can be found in autos, washing
machines, electrical appliances and even in toys. FPGAs are
the most recent computing technology that is used in embedded
systems. There is an increasing demand on FPGA
based embedded systems, in particular, for applications that
require rapid time responses. Engineering education curricula
needs to respond to the increasing industrial demand of
using FPGAs by introducing new syllabus for teaching and
learning this subject. This paper describes the development
of new course material for teaching FPGA-based embedded
systems design by using ‘G’ Programming Language of
LabVIEW. A general overview of FPGA role in engineering
education is provided. A survey of available Hardware
Programming Languages for FPGAs is presented. A survey
about LabVIEW utilization in engineering education is
investigated; this is followed by a motivation section of why
to use LabVIEW graphical programming in teaching and its
capabilities. Then, a section of choosing a suitable kit for the
course is laid down. Later, constructivist closed-loop model
the FPGA course has been proposed in accordance with [2-
4; 80,86,89,92]. The paper is proposing a pedagogical
framework for FPGA teaching; pedagogical evaluation will
be conducted in future studies. The complete study has been
done at the Faculty of Electrical and Electronic Engineering,
Aleppo University
CERN openlab Whitepaper on Future IT Challenges in Scientific Research
This whitepaper describes the major IT challenges in scientific research at CERN and several other European and international research laboratories and projects. Each challenge is exemplified through a set of concrete use cases drawn from the requirements of large-scale scientific programs. The paper is based on contributions from many researchers and IT experts of the participating laboratories and also input from the existing CERN openlab industrial sponsors. The views expressed in this document are those of the individual contributors and do not necessarily reflect the view of their organisations and/or affiliates
Restructuring Introductory Physics by Adapting an Active Learning Studio Model
Despite efforts to engage students in the traditional lecture environment, faculty in Georgia Southern University’s Physics Department became dissatisfied with lecture as the primary means of instruction. During the fall semester of 2006, our department began adapting the studio model to suit the needs of introductory calculus-based physics students at our institution. A studio course seamlessly integrates the lecture and laboratory courses into a single course, devoting much of the class time to active, collaborative, student-centered learning. An emphasis was placed on replacing traditional lectures with interactive, technology enriched class periods designed around the various learning styles. New teaching materials were created so that old laboratory assignments, very “cook-book” in nature, could be replaced with new inquiry-based laboratories. Assessment indicated students enrolled in the studio courses experience greater success in achieving the desired learning outcomes than those students enrolled in the traditional lecture courses. As of the fall semester of 2008, all sections of the introductory calculus-based physics courses at Georgia Southern University are taught utilizing the newly adapted studio model
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