Web user forums are a valuable means for users to resolve specific information needs, both interactively for the participants and statically for users who search/browse over historical thread data. However, the comple...
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Substantial research that examines the adoption of IT-enabled initiatives by organisations has been conducted in the context of western countries. Existing research shows that IT systems and their adoption are largely...
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Substantial research that examines the adoption of IT-enabled initiatives by organisations has been conducted in the context of western countries. Existing research shows that IT systems and their adoption are largely shaped by the characteristics of organisations, organisational culture, and business environment. To address the limited understanding of IT adoption practices in developing countries, this paper investigates facilitators and challenges related to technological, organisational and environmental contexts for IT adoption. For this purpose, a case study was conducted with a local Malaysian retail company which experiences enormous competitive pressure from influential international retail giants operating in Malaysia. The findings of the study offer important lessons for organisations operating in developing countries.
Wide-area VM migration is a technology with potential to aid IT services recovery since it can be used to evacuate virtualized servers to safe locations upon a critical disaster. However, the amount of data in-volved ...
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Previous works employ the pivot language approach to conduct statistical machine translation when encountering with limited amount of bilingual corpus. Conventional solutions based upon phrase-table combination overlo...
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This study describes an OPC (OLE for Process Control) based framework for integrating distributed control systems. The proposed framework combines OPC Client/Server technologies to integrate data and services. The OPC...
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In this paper, an optimized mechanism for Semiconductor wafer fabrication (SWF) by integrating the Adaptive neuro-fuzzy inference system (ANFIS) with Sim- ulated annealing (SA) algorithm is proposed. In this ap- proac...
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In this paper, an optimized mechanism for Semiconductor wafer fabrication (SWF) by integrating the Adaptive neuro-fuzzy inference system (ANFIS) with Sim- ulated annealing (SA) algorithm is proposed. In this ap- proach, aiming to solve the rush order problem which sig- nificantly affect the cycle time and impact the Work in process (WIP) of lots due to the high priority, we build an ANFIS based prediction model which will be embedded into releasing to forecast product codes and quantities of the contingent rush orders. Then a scheduler based on SA algorithm is constructed, the coding of which represents a combination of scheduling policies, including lot releas- ing policies, dispatching rules, batching rules and setting- up rules. When the SA finished its optimization process, an optimal scheduling policy is produced. By using the proposed approach??? we will find that the system can be optimized to a large extent and give a better performance.
In recent years, there has been an increased interest in using agent-based simulation models to investigate the evolution of cooperative behaviour in spatial evolutionary games. However, the relationship between indiv...
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This paper is concerned with the H_∞ consensus control problem in undirected networks of autonomous agents with nonlinear dynamics, subject to parameter uncertainties and external disturbances. With the consideration...
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ISBN:
(纸本)9781479932757
This paper is concerned with the H_∞ consensus control problem in undirected networks of autonomous agents with nonlinear dynamics, subject to parameter uncertainties and external disturbances. With the consideration of time-varying delays arising from communication among agents, a distributed protocol is proposed using the local delayed state information. Then, by defining an appropriate controlled output function, the consensus problem under the proposed protocol is converted into an H_∞ control problem. Based on robust H_∞ theory, sufficient conditions are derived to make all agents achieve consensus with desired H_∞ performance. Moreover, the feedback matrix in the proposed protocol is determined by solving two linear matrix inequalities (LMIs) with the same dimensions as a single agent. Finally, a numerical simulation is provided to demonstrate the effectiveness of our theoretical results.
This paper reports on initial results from a study of software developers doing their authentic work in their place of work. We apply the ethnographic and interaction-analytic methods that the CHI community has used t...
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In this paper, an adaptive output feedback tracking control scheme is proposed for spacecraft formation flying (SFF) in the presence of external disturbances, uncertain system parameters, input constraints and partial...
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ISBN:
(纸本)9781479932757
In this paper, an adaptive output feedback tracking control scheme is proposed for spacecraft formation flying (SFF) in the presence of external disturbances, uncertain system parameters, input constraints and partial loss of control effectiveness. The proposed controller incorporates a pseudo-velocity filter to account for the unmeasured relative velocity, and the neural network (NN) technique is implemented to approximate the desired nonlinear function and bounded external disturbances. In order to guarantee that the output of the NN used in the controller is bounded by the corresponding bound of the approximated nonlinear function, a switch function is employed to generate a switching between the adaptive NN control and the robust controller. Moreover, a fault tolerant part is included in the controller to compensate the partial loss of actuator effectiveness fault. It is shown that the derived controller not only guarantees the tracking error in the closed-loop system to be uniformly ultimately bounded (UUB) but also ensures the control input can rigorously enforce actuator magnitude constraints. Simulation results are provided to demonstrate the effectiveness of the proposed method.
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