Association of Colleges of Computing and Information

Displaying 1-24 of 24 results

  • White Papers // Apr 2011

    Data Hiding Based on Contrast Mapping Using DNA Medium

    Recently, biological techniques become more and more popular, as they are applied to many kinds of applications, authentication protocols, biochemistry, and cryptography. One of the most interesting biology techniques is deoxyribo nucleic acid and using it in such domains. Hiding secret data in deoxyribo nucleic acid becomes an important and...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Apr 2011

    Blocked-Based Sparse Matrix-Vector Multiplication on Distributed Memory Parallel Computers

    The present paper discusses the implementations of sparse matrix-vector products, which are crucial for high performance solutions of large-scale linear equations, on a PC-Cluster. Three storage formats for sparse matrices compressed row storage, block compressed row storage and sparse block compressed row storage are evaluated. Although using BCRS format reduces...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Jan 2011

    A Constraint Programming Based Approach to Detect Ontology Inconsistencies

    This paper proposes a constraint programming based approach to handle ontologies consistency, and more precisely user-defined consistencies. In practice, ontologies consistency is not still well handled in the current software environments. This is due to the algorithmic and language limitations of the tools developed to handle the consistency constraints. The...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Jan 2011

    Novel Robust Multilevel 3D Visualization Technique for Web Based GIS

    Number of recent technologies take Geographic Information Systems to new levels of power and usability. One of the most promising technologies that empower Geographic Information Systems is the 3D GIS modeling. In this paper, a novel robust multilevel data structure model called EBOT model (block octree tetrahedron mode Geographic Information...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Jan 2011

    e-Learning Systems in Virtual Environment

    E-learning is one of the emerging needs of the information age. Therefore a lot of potential is seen in distance learning development. Virtual environment interface to e-learning systems have recently appeared on the Internet. Using virtual reality environment, the applications appear to be promising to e-learning tasks more nature and...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Oct 2010

    Implementation of a Speech Coding Strategy for Auditory Implants

    In this paper the authors present the conception and the implementation of a speech processing interface for cochlea prosthesis. This module is based on a numerical speech processing algorithm which modelizes the infected ear and generates the stimulus signals for the cilia cells (brain). This interface uses a gammachirp filter...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Jul 2010

    Mediation Queries Adaptation After the Removal of a Data Source

    A broad variety of data is available in distinct heterogeneous sources, stored under different formats: database formats (in relational and object-oriented models), document formats (SGML/XML), browser formats (HTML), message formats, etc. The integration of such data is increasingly important for modern information systems applications such as data warehousing, data mining,...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Jul 2010

    Synthesis of Multibeam Antennas Arrays With a Modified Particle Swarm Optimization Algorithm

    In this paper, the authors intend to study the synthesis of the multibeam arrays. The synthesis implementation's method for this type of arrays permits to approach the appropriated radiance's diagram. An Adaptive Particle Swarm Optimization algorithm (APSO) is proposed to synthesis multibeam antenna arrays. The problem is formulated and solved...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Jul 2010

    Chaos-Based Key Stream Generator Based on Multiple Maps Combinations and Its Application to Images Encryption

    In recent years, growing number of cryptosystems based on chaos have been proposed. However, most of them encounter some problems such as: low level of security and small key space. The key stream generator is the key design issue of an encryption system. It directly determines security and efficiency, but...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Apr 2010

    Credit Scoring Models Using Soft Computing Methods: A Survey

    During the last fifteen years, soft computing methods have been successfully applied in building powerful and flexible credit scoring models and have been suggested to be a possible alternative to statistical methods. In this survey, the main soft computing methods applied in credit scoring models are presented and the advantages...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Apr 2010

    Deriving Conceptual Schema From Domain Ontology: A Web Application Reverse Engineering Approach

    The heterogeneous and dynamic nature of components making up a web application, the lack of effective programming mechanisms for implementing basic software engineering principles in it, and undisciplined development processes induced by the high pressure of a very short time-to-market, make web application maintenance a challenging problem. A relevant issue...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Jan 2010

    Ontology-Based Intelligent Mobile Search Oriented to Global e-Commerce

    In this paper the authors propose a novel approach for searching eCommerce products using a mobile phone, illustrated by a prototype eCoMobile. This approach aims to globalize the mobile search by integrating the concept of user multilinguism into it. To illustrate that, they particularly deal with English and Arabic languages....

    Provided By Association of Colleges of Computing and Information

  • White Papers // Oct 2009

    VI-SDB: A Convivial Approach for Description and Manipulation of Deductive and Stratified Databases

    Although deductive databases are based on a well established formalism, they didn't know the expected success. Their use was limited to the academic purpose. Indeed, the deductive database management systems are judged abstract, rare in commercial offers, and often expensive. In among the abstract concepts of the deductive databases, the...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Oct 2009

    Pruning Based Interestingness of Mined Classification Patterns

    Classification is an important problem in data mining. Decision tree induction is one of the most common techniques that are applied to solve the classification problem. Many decision tree induction algorithms have been proposed based on different attribute selection and pruning strategies. Although the patterns induced by decision trees are...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Oct 2009

    Clustering Items in Different Data Sources Induced by Stability

    Many multi-branch companies transact from different branches. Each branch of such a company maintains a separate database over time. The variation of sales of an item over time is an important issue. Thus, the authors introduce the notion of stability of an item. Stable items are useful in making many...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Oct 2009

    Towards Reengineering Web Applications to Web Services

    Web services technology and service-oriented architectures are rapidly developing and widely supported. However, it is fairly difficult for existing web applications to expose functionality as services in a service-oriented architecture, because when web applications were built, they served as monolithic systems. This paper describes a framework called WA2WS, which can...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Jul 2009

    Performance of Adaptive Beamforming Algorithm for LMS-MCCDMA MIMO Smart Antennas

    The authors propose a downlink multiple-input multiple-output multi-carrier code division multiple access system with adaptive beamforming algorithm for smart antennas. The algorithm used in this paper is based on the least mean square, with pilot channel estimation and the zero forcing equalizer in the receiver, requiring reference signal and no...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Jul 2009

    New Architecture of Fuzzy Database Management Systems

    Fuzzy relational data bases have been extensively studied in a theoretical level. Unfortunately, the repercussions of these works on the practical plan are negligible. Medina et al. have developed a server named fuzzy SQL, supporting flexible queries and based on a theoretic model called GEFRED. This server has been programmed...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Apr 2009

    Investigation Arabic Speech Recognition Using CMU Sphinx System

    Automatic Speech Recognition (ASR) is a technology that allows a computer to identify the words that a person speaks into a microphone or telephone. It has a wide area of applications: command recognition (voice user interface with the computer), dictation, interactive voice response, it can be used to learn a...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Apr 2009

    A Proposed Approach for Learner Evaluation in an Open Distance Environment

    The remote learning evolution and particularly the e-learning permits to more and more people access to education. One of the learning fields which are to be developed is the learner evaluation. The accuracy and the pertinence of the evaluation results can provide information which can be very exploitable by the...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Jan 2009

    Hardware Implementation Low Power High Speed FFT Core

    In recent times, DSP algorithms have received increased attention due to rapid advancements in multimedia computing and high-speed wired and wireless communications. In response to these advances, the search for novel implementations of arithmetic-intensive circuitry has intensified. For the portability requirement in telecommunication systems, there is a need for low...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Jan 2009

    New Approach for Conception and Implementation of Object Oriented Expert System Using UML

    Since conception is the primary part in the realization of a computer system and in order to help designers describe their software, several languages and tools such as the UML modeling language have been proposed in the literature. UML knew an important success for the conception of object oriented systems....

    Provided By Association of Colleges of Computing and Information

  • White Papers // Jan 2009

    A New Approach Using Temporal Radial Basis Function in Chronological Series

    In this paper, the authors present an extended form of the radial basis function network called temporal-radial basis function network. This extended network is used in decision rules and classification in spatio-temporal domain applications like speech recognition, economic fluctuations, seismic measurements and robotics applications. They found that such a network...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Oct 2008

    Design and Implementation of G/G/1 Queuing Model Algorithm for Its Applicability in Internet Gateway Server

    How to competently apportion system resource to process the client request by gateway servers is a tricky predicament. In this paper, the authors propose an enhanced proposal for autonomous recital of gateway servers under highly dynamic traffic loads. They have developed G/G/1 queuing model algorithm and premeditated its intricacy, so...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Oct 2009

    VI-SDB: A Convivial Approach for Description and Manipulation of Deductive and Stratified Databases

    Although deductive databases are based on a well established formalism, they didn't know the expected success. Their use was limited to the academic purpose. Indeed, the deductive database management systems are judged abstract, rare in commercial offers, and often expensive. In among the abstract concepts of the deductive databases, the...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Oct 2009

    Pruning Based Interestingness of Mined Classification Patterns

    Classification is an important problem in data mining. Decision tree induction is one of the most common techniques that are applied to solve the classification problem. Many decision tree induction algorithms have been proposed based on different attribute selection and pruning strategies. Although the patterns induced by decision trees are...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Jul 2009

    Performance of Adaptive Beamforming Algorithm for LMS-MCCDMA MIMO Smart Antennas

    The authors propose a downlink multiple-input multiple-output multi-carrier code division multiple access system with adaptive beamforming algorithm for smart antennas. The algorithm used in this paper is based on the least mean square, with pilot channel estimation and the zero forcing equalizer in the receiver, requiring reference signal and no...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Jul 2009

    New Architecture of Fuzzy Database Management Systems

    Fuzzy relational data bases have been extensively studied in a theoretical level. Unfortunately, the repercussions of these works on the practical plan are negligible. Medina et al. have developed a server named fuzzy SQL, supporting flexible queries and based on a theoretic model called GEFRED. This server has been programmed...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Apr 2009

    Investigation Arabic Speech Recognition Using CMU Sphinx System

    Automatic Speech Recognition (ASR) is a technology that allows a computer to identify the words that a person speaks into a microphone or telephone. It has a wide area of applications: command recognition (voice user interface with the computer), dictation, interactive voice response, it can be used to learn a...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Apr 2009

    A Proposed Approach for Learner Evaluation in an Open Distance Environment

    The remote learning evolution and particularly the e-learning permits to more and more people access to education. One of the learning fields which are to be developed is the learner evaluation. The accuracy and the pertinence of the evaluation results can provide information which can be very exploitable by the...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Jan 2009

    Hardware Implementation Low Power High Speed FFT Core

    In recent times, DSP algorithms have received increased attention due to rapid advancements in multimedia computing and high-speed wired and wireless communications. In response to these advances, the search for novel implementations of arithmetic-intensive circuitry has intensified. For the portability requirement in telecommunication systems, there is a need for low...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Jan 2009

    New Approach for Conception and Implementation of Object Oriented Expert System Using UML

    Since conception is the primary part in the realization of a computer system and in order to help designers describe their software, several languages and tools such as the UML modeling language have been proposed in the literature. UML knew an important success for the conception of object oriented systems....

    Provided By Association of Colleges of Computing and Information

  • White Papers // Jan 2009

    A New Approach Using Temporal Radial Basis Function in Chronological Series

    In this paper, the authors present an extended form of the radial basis function network called temporal-radial basis function network. This extended network is used in decision rules and classification in spatio-temporal domain applications like speech recognition, economic fluctuations, seismic measurements and robotics applications. They found that such a network...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Jan 2010

    Ontology-Based Intelligent Mobile Search Oriented to Global e-Commerce

    In this paper the authors propose a novel approach for searching eCommerce products using a mobile phone, illustrated by a prototype eCoMobile. This approach aims to globalize the mobile search by integrating the concept of user multilinguism into it. To illustrate that, they particularly deal with English and Arabic languages....

    Provided By Association of Colleges of Computing and Information

  • White Papers // Oct 2008

    Design and Implementation of G/G/1 Queuing Model Algorithm for Its Applicability in Internet Gateway Server

    How to competently apportion system resource to process the client request by gateway servers is a tricky predicament. In this paper, the authors propose an enhanced proposal for autonomous recital of gateway servers under highly dynamic traffic loads. They have developed G/G/1 queuing model algorithm and premeditated its intricacy, so...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Oct 2009

    Clustering Items in Different Data Sources Induced by Stability

    Many multi-branch companies transact from different branches. Each branch of such a company maintains a separate database over time. The variation of sales of an item over time is an important issue. Thus, the authors introduce the notion of stability of an item. Stable items are useful in making many...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Oct 2009

    Towards Reengineering Web Applications to Web Services

    Web services technology and service-oriented architectures are rapidly developing and widely supported. However, it is fairly difficult for existing web applications to expose functionality as services in a service-oriented architecture, because when web applications were built, they served as monolithic systems. This paper describes a framework called WA2WS, which can...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Apr 2011

    Data Hiding Based on Contrast Mapping Using DNA Medium

    Recently, biological techniques become more and more popular, as they are applied to many kinds of applications, authentication protocols, biochemistry, and cryptography. One of the most interesting biology techniques is deoxyribo nucleic acid and using it in such domains. Hiding secret data in deoxyribo nucleic acid becomes an important and...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Jan 2011

    A Constraint Programming Based Approach to Detect Ontology Inconsistencies

    This paper proposes a constraint programming based approach to handle ontologies consistency, and more precisely user-defined consistencies. In practice, ontologies consistency is not still well handled in the current software environments. This is due to the algorithmic and language limitations of the tools developed to handle the consistency constraints. The...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Jan 2011

    Novel Robust Multilevel 3D Visualization Technique for Web Based GIS

    Number of recent technologies take Geographic Information Systems to new levels of power and usability. One of the most promising technologies that empower Geographic Information Systems is the 3D GIS modeling. In this paper, a novel robust multilevel data structure model called EBOT model (block octree tetrahedron mode Geographic Information...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Jan 2011

    e-Learning Systems in Virtual Environment

    E-learning is one of the emerging needs of the information age. Therefore a lot of potential is seen in distance learning development. Virtual environment interface to e-learning systems have recently appeared on the Internet. Using virtual reality environment, the applications appear to be promising to e-learning tasks more nature and...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Oct 2010

    Implementation of a Speech Coding Strategy for Auditory Implants

    In this paper the authors present the conception and the implementation of a speech processing interface for cochlea prosthesis. This module is based on a numerical speech processing algorithm which modelizes the infected ear and generates the stimulus signals for the cilia cells (brain). This interface uses a gammachirp filter...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Jul 2010

    Mediation Queries Adaptation After the Removal of a Data Source

    A broad variety of data is available in distinct heterogeneous sources, stored under different formats: database formats (in relational and object-oriented models), document formats (SGML/XML), browser formats (HTML), message formats, etc. The integration of such data is increasingly important for modern information systems applications such as data warehousing, data mining,...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Jul 2010

    Synthesis of Multibeam Antennas Arrays With a Modified Particle Swarm Optimization Algorithm

    In this paper, the authors intend to study the synthesis of the multibeam arrays. The synthesis implementation's method for this type of arrays permits to approach the appropriated radiance's diagram. An Adaptive Particle Swarm Optimization algorithm (APSO) is proposed to synthesis multibeam antenna arrays. The problem is formulated and solved...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Jul 2010

    Chaos-Based Key Stream Generator Based on Multiple Maps Combinations and Its Application to Images Encryption

    In recent years, growing number of cryptosystems based on chaos have been proposed. However, most of them encounter some problems such as: low level of security and small key space. The key stream generator is the key design issue of an encryption system. It directly determines security and efficiency, but...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Apr 2010

    Credit Scoring Models Using Soft Computing Methods: A Survey

    During the last fifteen years, soft computing methods have been successfully applied in building powerful and flexible credit scoring models and have been suggested to be a possible alternative to statistical methods. In this survey, the main soft computing methods applied in credit scoring models are presented and the advantages...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Apr 2010

    Deriving Conceptual Schema From Domain Ontology: A Web Application Reverse Engineering Approach

    The heterogeneous and dynamic nature of components making up a web application, the lack of effective programming mechanisms for implementing basic software engineering principles in it, and undisciplined development processes induced by the high pressure of a very short time-to-market, make web application maintenance a challenging problem. A relevant issue...

    Provided By Association of Colleges of Computing and Information

  • White Papers // Apr 2011

    Blocked-Based Sparse Matrix-Vector Multiplication on Distributed Memory Parallel Computers

    The present paper discusses the implementations of sparse matrix-vector products, which are crucial for high performance solutions of large-scale linear equations, on a PC-Cluster. Three storage formats for sparse matrices compressed row storage, block compressed row storage and sparse block compressed row storage are evaluated. Although using BCRS format reduces...

    Provided By Association of Colleges of Computing and Information