This paper tries to define mechanisms which insure the right functionality for systems based on the Volunteer Grid concept and propose a new framework for Volunteer Grid computing management. Volunteer Grid systems al...
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ISBN:
(纸本)9781424473359
This paper tries to define mechanisms which insure the right functionality for systems based on the Volunteer Grid concept and propose a new framework for Volunteer Grid computing management. Volunteer Grid systems allow setting up high performance computer networks, easily, rapidly and at low costs, the main characteristic of their nodes being the volunteer participation. Thus, a supercomputer is created, able to perform most complex calculations in a relatively short period of time. This volunteering itself is a weakness of the system, because not only physical faults must be taken into consideration, but also sabotages through which participants could try to increase their rating.
The current trend in processor's design is to add multiple cores to increase the system's overall performance but this is not a solution to increasing the performance of serial applications. Due to its potenti...
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ISBN:
(纸本)9781424473359
The current trend in processor's design is to add multiple cores to increase the system's overall performance but this is not a solution to increasing the performance of serial applications. Due to its potential to greatly accelerate a wide variety of serial applications, reconfigurable computing has become a subject of a great deal of research. Its key feature is the ability to perform computations in hardware in order to increase performance, while retaining much of the flexibility of a software solution. In this paper, we address the problem of fully automating the process of selecting the code to be used for hardware acceleration. We present a software-hardware partitioning system that transforms Impulse C source code into blocks of C and VHDL code. The resulting C code wiD be run on the CPU, while the VHDL code will be implemented on a reconfigurable hardware, e.g. a FPGA.
This article concerns the hardware iterative decoder for a subclass of LDPC (Low-Density Parity-Check) codes that are implementation oriented. They are known as Architecture Aware LDPC (AA-LDPC). The decoder has been ...
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In this paper we address the topic of embedding 2D barcode detection and reading technology into specific online environment applications. We propose a framework for the integration of barcode technology into common u...
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The paper presents a software application for modeling, simulation and analysis of urban traffic networks behavior in different functioning contexts. A module of control techniques, based on different approaches (as g...
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Web-based blended learning at Silesian University of Technology, Poland, is supported by integrated elearning service called Distant Education Platform (DEP). The authors discuss general framework concerning DEP and p...
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ISBN:
(纸本)9780889868328
Web-based blended learning at Silesian University of Technology, Poland, is supported by integrated elearning service called Distant Education Platform (DEP). The authors discuss general framework concerning DEP and present the ideas of DEP-based knowledge delivery. Introduction of modern technologies has changed education process significantly. The quality of courses supported by DEP has been improved, the number of services has increased and the teachers' workload has been reduced. Nevertheless, the number of courses that have been fully transformed into blended version is insufficient. There are many barriers to successful implementation of web-based learning - technical, mental and pedagogical. In the paper the authors present comprehensive list of potential barriers, and give some guidelines how to overcome them.
Current Web search engines return long lists of ranked documents that users are forced to sift through to find relevant documents. This paper introduces a new approach for clustering Web search results, based on the n...
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ISBN:
(纸本)9789898425225
Current Web search engines return long lists of ranked documents that users are forced to sift through to find relevant documents. This paper introduces a new approach for clustering Web search results, based on the notion of clustering by compression. Compression algorithms allow defining a similarity measure based on the degree of common information. Classification methods allow clustering similar data without any previous knowledge. The clustering by compression procedure is based on a parameter-free, universal, similarity distance, the normalized compression distance or NCD, computed from the lengths of compressed data files. Our goal is to apply the clustering by compression algorithm in order to cluster the documents returned by a Web search engine in response to a user query.
Skew detection and correction is an important step in automated content conversion systems, on which overall system performance is dependent. Although there are many working solutions at the present time, the search f...
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The paper is devoted to analyze the observability of an arbitrary order dynamical systems. Following the aim of formulation the conditions of initial observability of arbitrary order system spectral theory for linear ...
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The paper is devoted to analyze the observability of an arbitrary order dynamical systems. Following the aim of formulation the conditions of initial observability of arbitrary order system spectral theory for linear operators is involved. In the article the theorem on necessary and sufficient conditions on initial observability are formulated is proved. The very innovation of the article is the general, arbitrary order respect to time of the analyzed dynamical system.
The paper investigates barriers to innovation in epedagogy, seeks answer to the following basic question: "why teachers underutilize innovative tools?". The Authors report on a case study that was carried ou...
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ISBN:
(纸本)9780889868670
The paper investigates barriers to innovation in epedagogy, seeks answer to the following basic question: "why teachers underutilize innovative tools?". The Authors report on a case study that was carried out at the Silesian University of Technology. Teachers using the Moodle learning platform were surveyed to see: 1) to what extent they made use of its different elements, 2) identify barriers in e-learning development and see teachers' general opinion about this form of education. Firstly, based on the survey results, comments related with these two groups of questions are given, then some general conclusions are drawn. Answer to the basic question is given as well, however no special recommendations for ensuring that teachers embrace rather than resist a move to e-education are offered. It looks that "carrot and stick" is the only effective policy that is able to force teachers to leave their "classroom kingdom".
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