In distributed virtual environments (DVEs), maintaining a consistent view of the virtual world among all users is a primary task. Due to the resource limitations such as network capacity and computational power, the c...
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the proceedings contain 69 papers. the special focus in this conference is on Computational Kinematics. the topics include: Inherently balanced double Bennett linkage;3D revolute joint with clearance in multibody syst...
ISBN:
(纸本)9783319608662
the proceedings contain 69 papers. the special focus in this conference is on Computational Kinematics. the topics include: Inherently balanced double Bennett linkage;3D revolute joint with clearance in multibody systems;kinematics and bifurcation of a twofold-symmetric eight-bar linkage;a novel kinematic model of spatial four-bar linkage RSPS for testing accuracy of actual r-pairs with ball-bar;model reduction methods for optimal follow-the-leader movements of binary actuated, hyper redundant robots;kinematic design of a lighting robotic arm for operating room;elastostatic modelling of a wooden parallel robot;towards an autonomous airborne robotic agent;autonomous march control for humanoid robot animation in a virtual reality environment;control based on linear algebra for mobile manipulators;modeling and kinematic nonlinear control of aerial mobile manipulators;path planning based on visual feedback between terrestrial and aerial robots cooperation;kinematic analysis of active ankle using computational algebraic geometry;optimization of a redundant serial spherical mechanism for robotic minimally invasive surgery;kinematic analysis for a prostate biopsy parallel robot using study parameters;optimum walking of the bioloid humanoid robot on a rectilinear path;a new experimental set-up for training multi parameter gaits;comprehensive dynamic study of an unloaded walking within a cable based gait trainer;a cable-driven robot for upper limb rehabilitation inspired by the mirror therapy;application of the rigid finite element method to the simulation of cable driven parallel robots and evaluating the knot vector to synthesize the cam motion using NURBS.
Recent years have seen an increasing trend towards the development of Discrete Event simulation (DES) platforms to support cloud computing related decision making and research. the complexity of cloud environments is ...
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P2P Grids are Grids organized into P2P networks where participant exchange computing time so as to complete computational tasks. Evaluating the performance of scheduling algorithms enables one to deploy those that are...
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ISBN:
(纸本)9781605580524
P2P Grids are Grids organized into P2P networks where participant exchange computing time so as to complete computational tasks. Evaluating the performance of scheduling algorithms enables one to deploy those that are efficient. Performance is often evaluated experimentally or through simulation because these algorithms (typically heuristics) are too complex to model analytically. Testing the implementation of P2P Grid middleware before it is deployed is also important: Reproducing configurations or conditions that lead to unexpected outcomes is thus valuable. A P2P Grid environment exhibits multiple sources of failure and is typically dynamic and uncontrollable. Reproducing even basic behavior of Grid nodes in a controllable and repeatable manner is thus exceedingly difficult. Such lack of control over the environment is a major challenge in the software engineering of P2P Grid middleware [7]. Simulators have been proposed to evaluate the performance of scheduling algorithms, but are often limited in scope, reusability and accuracy, i.e. they rely on simplified models. We introduce a software engineering pattern - that we call code once, deploy twice - to both reduce the distance between simulated and implemented algorithms and reproduce, at will, Grid configurations and environments: A simulator implementation of a Grid architecture is built by virtualizing its middleware implementation. An immediate benefit is that most of the code can be reused between both implementations;only communications between Grid nodes, multithreading within Grid nodes and actual task execution are coded differently. As a derived benefit, most of the code of the middleware can be tested within the controlled environment of the simulator, before it is deployed as-is. Another benefit is high simulation accuracy. We describe the implementation of a P2P Grid following the code once, deploy twice pattern, that we believe is also relevant to other Grid types (certainly Volunteer Grids [5, 4]
the goal of the XDUI 2015 workshop is to bring together leading and upcoming systems researchers in the area of cross-device interfaces and define a research agenda together. the workshop aims to be useful, not only f...
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ISBN:
(纸本)9781450336468
the goal of the XDUI 2015 workshop is to bring together leading and upcoming systems researchers in the area of cross-device interfaces and define a research agenda together. the workshop aims to be useful, not only for the EICS research community, but for the wider HCI community, where many recent cross-device systems and tools have been developed and investigated almost in parallel without learning from and building on each other. It targets both new and established researchers in the area - new researchers will quickly get an overview of the state of the art, while established researchers can draw more detailed comparisons between their solutions and discuss benefits and limitations. this workshop at EICS provides a unique opportunity to sketch the design space of possible cross-device user interfaces and discuss technical concerns of existing solutions as well as open issues and future research directions.
this book constitutes the thoroughly refereed post-conference proceedings of the 7th International workshop on Engineering Societies in the Agents World, ESAW 2007, held in Athens, Greece, in October 2007. the 19 revi...
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ISBN:
(数字)9783540876540
ISBN:
(纸本)9783540876533
this book constitutes the thoroughly refereed post-conference proceedings of the 7th International workshop on Engineering Societies in the Agents World, ESAW 2007, held in Athens, Greece, in October 2007. the 19 revised full papers were carefully reviewed and selected for inclusion in this book. the papers are organized in topical sections on electronic institutions, models of complex distributed systems with agents and societies; interaction in agent societies; engineering social intelligence in multi-agent systems; trust and reputation in agent societies; analysis, design and development of agent societies.
Current trends in the development of new technologies for renewable energy systems show the importance of tidal and ocean current exploitation. But this also means to enter new fields of application and to develop new...
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ISBN:
(纸本)9783540743835
Current trends in the development of new technologies for renewable energy systems show the importance of tidal and ocean current exploitation. But this also means to enter new fields of application and to develop new types of turbines. Latest measurements at economically interesting sites show strong fluctuations in flow and attack angles towards the turbine. In order to examine the dynamical behaviour of the long and thin structure of the turbine blades, coupled simulations considering fluid flow and structural behaviour need to be performed. For this purpose the parallel Navier-Stokes code FENFLOSS, developped at the IHS, is coupled withthe commercial FEM-Code ABAQUS. Since the CFD domain has to be modelled in a certain way, the grid size tends to be in the range of about some million grid points. Hence, to solve the coupled problem in an acceptable timeframe the unsteady CFD calculations have to run on more than one CPU. Whereas, the structural grid is quite compact and, does not request that much computational power. Furthermore, the computational grid, distributed on different CPUs, has to be adapted after each deformation step. this also involves additional computational effort.
We report the results of an investigation aiming at experimenting the use of Generalized Stochastic Petri Nets (GSPN), a formal method which allows to model a concurrent application with an explicit representation of ...
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the diagnosis of unobservable fault events in discrete event systems modeled in a modular manner by means of parallel composition is considered. the notion of modular diagnosability is introduced for these systems. Ne...
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the Boehm spiral model is a generic risk-driven software development model. the design of low level risk elements is postponed until the high risk elements are stabilized. the Spiral model accommodates to rapid protot...
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