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Ability to allocate task on the fly is considered to be one of the most desirable features in a swarm intelligent system. This paper presents a computational model in which swarms of autonomous agents (robots) carry out the task of cleaning the environment by collecting boxes from the environment and dumping them in a dump area. As agents work, they lose energy and when the energy is too low they...
Simulation is experimentation with a model. The behavior of the model imitates some salient aspect of the behavior of the system under study and the user experiments with the model to infer this behavior. This general framework has proven a powerful adjunct to learning, problem solving, and design. In this tutorial, we focus principally on discrete-event simulation—its underlying concepts, structure,...
This paper is to compare GOMS evaluation results with analysis of HCI design of university webpage using eye-tracking technology. The evaluation process, methodology, operation codes and required time of GOMS user model are stipulated. Comparison suggests a close proximity between the results of GOMS evaluation and eye-tracking experiment, with a little deviation that could be affected by computer...
This paper presents an average-value model of a line commutated converter-based HVDC system using dynamic phasors. The model represents the low-frequency dynamics of the converter and its ac and dc systems, and has lower computational requirements than a conventional electromagnetic transient (EMT) switching model. The developed dynamic-phasor model is verified against an EMT model of the CIGRE HVDC...
The Hadoop HDFS is a popular open-source distributed storage system, which serves as the foundation of many important big-data technologies. The performance of data replication is crucial to HDFS, since it accounts for a major portion of network traffic in the entire cluster. In this research, we propose to enable multicast-based replication, which is expected to use less network bandwidth than the...
Cascaded H-Bridge converter has recently been utilized in different high-power applications due to its modular and simple structure. In order to have a balanced operation after a fault occurrence in this converter, it is necessary to detect the switch fault and its location. In this paper, a fast power switch fault detection method is presented to identify the fault and its location. Only one voltage...
The paper presents an algorithm designed to make fusion of sensory data obtained by different equipment integrated in a mobile measurement platform. The measurement platform has been primarily designed to measure changes of road geometrical parameters and degradation of road surface over time. When measuring road surface degradation, data from the laser scanner, GPS receiver and INS are being fused...
The concept of "determinism" of parallel programs and parallel systems has received a lot of attention since the dawn of computing, with multiple proposals for formal and informal definitions of deterministic execution. In this paper, we present precise definitions of two related properties of program schemata -- determinacy and repeatability. A key advantage of providing definitions for...
Aiming at the difficulty of large weapon equipment operation training simulation, GL Studio software tool was adopted based on VR technology. A hierarchy structure was put forward to simulate all kinds of integrating equipment system, single equipment and operation unit. Key technologies including Model database structure optimization, LOD, operation unit motion simulation based on DOF and screen...
Performance prediction for the high performance computer system is of great importance for designing, implementing, and optimizing system. As a widely used technique for predicting performance, simulation method attracts more and more attention from the research community. Based on analyzing the problems in the current performance simulation techniques, we present a key idea of the performance simulator...
This paper discusses the transient responses of switching mode power supplies (SMPS) under a lightning surge. These devices are normally used in fluorescent lighting, personal computers and other appliances. In this paper the circuit models of switching mode power supplies are developed by taking into account both the nonlinearity and the parasitic effect of SMPS components. These models are verified...
This paper introduces the design of an automobile driving simulation system based on single chip computer. It's control device, with 8 bit single chip computer STC89LE516AD as its core, assisted by data acquisition circuit, data storage circuit, and data communication circuit, performs the function of collection, storage and communication of the driving information. Furthermore, with the help of visual...
Contiguous allocation in multicomputers is useful for security and accounting reasons. In mesh-connected systems, it allocates each job an exclusive submesh of processors, and the allocated submesh has the same shape and size as that requested by the job. Because of this size and shape constraint, contiguous allocation typically suffers from high processor fragmentation. Processor fragmentation can...
Network-on-Chip (NoC) overcomes the main constraints of traditional bus-based System-on-Chip (SoC). It introduces the principle of interconnection network into SoC design. Router is the main component of NoC and determines performance to a large extend. Virtual-channel router is one of the promising router architectures for Network-on-Chip, for its low delay and high network throughput. In this paper,...
We propose a novel flagging system (FS) to make the Neural Network Controller (NNC), which is an extant real-time dynamic buffer tuner, more realistic for real-time applications over the mobile Internet. Even though the extant NNC may prevent buffer overflow, it fails under certain traffic conditions easily. This happens because the intrinsic NNC control intelligence cannot handle the whole spectrum...
This paper studies the difference in computational power between the mesh-connected parallel computers equipped with dynamically reconfigurable bus systems and those with static ones. The mesh with separable buses (MSB) is the mesh-connected computer with dynamically reconfigurable row/column buses. The broadcasting buses of the MSB can be dynamically sectioned into smaller bus segments by program...
A practical way to implement the particle filter (PF) on a massively parallel computer is discussed. Although the PF is a useful tool for sequential Bayesian estimation, the PF tends to be computationally expensive in applying to high-dimensional problems because a enormous number of particles is required in order to appropriately approximate a PDF. One way to overcome this problem is to use large...
The performance of the existing non-contiguous processor allocation strategies has been traditionally carried out by means of simulation based on synthetic workload models to generate streams of incoming jobs. To validate the performance of the existing algorithms, there is need to evaluate the algorithms' performance based on real workload traces. In this paper, we evaluate the performance of several...
Precise evaluation of network appliance energy consumption is necessary to accurately model or simulate the power consumption of distributed systems. In this paper we evaluate the influence of traffic onto the consumption of electrical power of four switches found in home and professional environments. First we describe our measurement and data analysis approach, and how our results can be used for...
Building information modelling (BIM) is only a tool in the procurement of a building, but it is changing the way the whole process is undertaken. Having a single model which is used by all disciplines requires a different management structure and by consequence a restructuring of the resources required to complete a project.These changes are encompassed in Integrated Practice and more recently Integrated...
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