This paper studies the effect that HOL (Head-of-Line) blocking in the packet injection queue has on the performance of bidirectional k-ary ncubes, for values of k over a certain threshold (around 20). The HOL blocking...
详细信息
Evolutionary algorithms provide ways to explore wide search spaces. Thus, it is possible to get some conclusions about the characteristics of these spaces in order to aid in the determination of the best alternatives ...
详细信息
Evolutionary algorithms provide ways to explore wide search spaces. Thus, it is possible to get some conclusions about the characteristics of these spaces in order to aid in the determination of the best alternatives to solve the problem at hand. We have applied a genetic algorithm to assess the problem of distributed load balancing in parallel processing. To do that, we propose a classification of the space of design of distributed load balancing algorithms that takes into account the different alternatives for each dimension of the algorithm. This classification allows the codification of each load balancing strategy, thus making possible to apply a genetic search to determine the distributed load balancing procedure that provides the best performance for the type of parallel application at hand and the parallel platform where it is implemented. As an example, in this paper we provide the results corresponding to the parallel multiplication of matrices implemented in a cluster.
In the early stages of a design process, a detailed hazard analysis should be performed, particularly for safety critical systems. In this paper an actuator based hazard analysis method is presented. Since it is the a...
详细信息
In this paper, self-organizing maps (SOM) with growing capability are proposed to evaluate the goodness of multispectral training areas selection that would be used in supervised classification processes. The SOM mode...
详细信息
In this paper, self-organizing maps (SOM) with growing capability are proposed to evaluate the goodness of multispectral training areas selection that would be used in supervised classification processes. The SOM model used in this study is the Growing Cell Structures (GCS) neural network. Some modifications of the original GCS training algorithm are proposed in order to make easy the physical interpretation of their parameters. In addition, several visualization methods have been implemented with the aim of displaying the trained GCS networks. The performances of the modified GCS model have been investigated through a large number of experiments. They have been carried out using multispectral data registered by ETM+ sensor (Landsat 7), to discriminate land cover categories. The results confirm the excellent behavior of the GCS modified training algorithm to evaluate the quality of the selected training patterns, their viability for feeding supervised classification models and their refining.
Block (cyclic) channel coding standards for third generation cellular networks require the implementation of high-performance burst-error detection and correction algorithms. Galois field (GF) arithmetic is commonly u...
详细信息
Block (cyclic) channel coding standards for third generation cellular networks require the implementation of high-performance burst-error detection and correction algorithms. Galois field (GF) arithmetic is commonly used in this architecture for encoding and decoding error codes, however, many architectures still do not support dedicated functional units. This paper presents the design of a generic parallel finite-field GF (2/sup m/) multiplier targeted at DSP and embedded processors. As opposed to previous research, this design has the ability to utilize different primitive polynomials as an input, thereby, being able to be programmable. Moreover, a design is presented that is a combined binary and finite-field GF (2/sup m/) multiplier. Area, delay, and power dissipation results are presented from several ASIC libraries.
Recently, a new paradigm in ICA emerged, that of finding "clusters" of dependent components. This striking philosophy found its implementation in two new ICA algorithms: tree–dependent and topographic ICA. ...
详细信息
This work in progress describes the development of remote lecture demonstrations and experiments for communication engineering. The remote panel feature of LabVIEW is used to allow access to virtual instruments (VI...
详细信息
This work in progress describes the development of remote lecture demonstrations and experiments for communication engineering. The remote panel feature of LabVIEW is used to allow access to virtual instruments (VI's) through a web browser. The experiments, themselves are located in the laboratory, saving the time and effort off moving all the equipment to the classroom. Full experiments, rather than simulations of the phenomena are used. In the classroom the remote panels are accessed through a wireless Internet link. This work-in-progress will conclude with a discussion of several extensions of these ideas.
The development of intelligent building and the network technology involved were introduced. The scheme of remote monitoring and control system of intelligent building based on LonWorks and Web was presented. The fram...
详细信息
ISBN:
(纸本)0780382730
The development of intelligent building and the network technology involved were introduced. The scheme of remote monitoring and control system of intelligent building based on LonWorks and Web was presented. The framework and working principle were analyzed. The key technology involved was studied. A prototype system was established according to the above scheme. The results of experiment show that the system works well.
While there exist many kernel and user level libraries/systems which support checkpointing working processes and resuming their operations, it is still very difficult to provide an easy-to-use tool to assist checkpoin...
详细信息
While there exist many kernel and user level libraries/systems which support checkpointing working processes and resuming their operations, it is still very difficult to provide an easy-to-use tool to assist checkpointing parallel applications. In this work, we aim at the development of an easy-to-use user-guided library to support checkpointing parallel MPI applications to be executed within the CLUSTERIX environment i.e. a collection of distributed HPC clusters. We propose a programmer-assisted approach with process state packing and unpacking at the code level for SPMD HPC applications. Although the library is in its early stage of development we present checkpoint/restart times and application execution (interrupted by checkpointing) times for the proposed approach compared to the same application linked with the ckpt user level library.
Adaptation is one of the necessary capabilities of any expert system. In a traditional expert system, the evolving environment is often treated in a static view. And the system accepts the change negatively. Our focus...
详细信息
ISBN:
(纸本)0780386531
Adaptation is one of the necessary capabilities of any expert system. In a traditional expert system, the evolving environment is often treated in a static view. And the system accepts the change negatively. Our focus in this paper is to construct an adaptive CBR model which can learn continually through detecting feedbacks from the outside to partially release this. Knowledge base here is improved gradually so to enhance the system's adaptation of solving problems in dynamic environment.
暂无评论