Journal of Universal Computer Science

Displaying 1-40 of 154 results

  • White Papers // Mar 2010

    SOM Clustering to Promote Interoperability of Directory Metadata: A Grid-Enabled Genetic Algorithm Approach

    Directories provide a general mechanism for describing resources and enabling information sharing within and across organizations. Directories must resolve differing structures and vocabularies in order to communicate effectively, and interoperability of the directories is becoming increasingly important. This paper proposes an approach that integrates a genetic algorithm with a neural...

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  • White Papers // Mar 2010

    Ontology based Approach in Knowledge Sharing Measurement

    For many years, physical asset indicators were the main evidence of an organization's successful performance. However, the situation has changed following the revolution of information technology in the knowledge-based economy and in the new ideas in economy; knowledge assets are a critical strategic resource in economy. Knowledge Management [KM] tools...

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  • White Papers // Apr 2010

    Ontology Visualization: Tools and Techniques for Visual Representation of Semi-Structured Meta-Data

    Ontologies are used to represent a variety of domain knowledge and data collections, scopes, view-points and linked heterogeneous information sources. They range from simple topologies to highly structured knowledge bases with complex relations. When mapping or aligning two or more ontologies, an efficient user support is needed so that the...

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  • White Papers // Sep 2010

    Compositional Semantics of Dataflow Networks with Query-Driven Communication of Exact Values

    The authors develop and study the concept of dataflow process networks as used for example by Kahn to suit exact computation over data types related to real numbers, such as continuous functions and geometrical solids. Furthermore, they consider communicating these exact objects among processes using protocols of a query-answer nature...

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  • White Papers // Jan 2009

    Formal Verification of Semistructured Data Models in PVS

    The rapid growth of the World Wide Web has resulted in a dramatic increase in semi-structured data usage, creating a growing need for effective and efficient utilization of semi-structured data. In order to verify the correctness of semi-structured data design, precise descriptions of the schemas and transformations on the schemas...

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  • White Papers // Feb 2008

    Knowledge Sharing and Collaborative Learning in Second Life: A Classification of Virtual 3D Group Interaction Scripts

    In this paper the authors propose a classification and systematic description structure based on the pattern paradigm for interaction scripts in second life that aim at facilitating on the one side knowledge sharing and knowledge integration in groups, and on the other side knowledge creation in formal and informal ways....

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  • White Papers // Feb 2009

    A Meta-modeling based Approach for the Multi- Disciplinary Design of Web Educational Systems

    In this paper the authors present an efficient data preprocessing procedure for the Support of Vector Clustering (SVC) to reduce the size of a training dataset. Solving the optimization problem and labeling the data points with cluster labels are time-consuming in the SVC training procedure. This makes using SVC to...

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  • White Papers // Apr 2009

    Discovering Semantic Aspects of Socially Constructed Knowledge Hierarchy to Boost the Relevance of Web Searching

    In this paper the authors intend to boost the relevance of Web search results by classifying Websnippet into socially constructed hierarchical search concepts, such as the most comprehensive human edited knowledge structure, the Open Directory Project (ODP). The semantic aspects of the search concepts (categories) in the socially constructed hierarchical...

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  • White Papers // Apr 2009

    Fostering Knowledge Flow and Community Engagement in the Development of Interactive Entertainment

    Due to an increasing professionalization, specialization, and globalization in the development of interactive entertainment new demands for comprehensive knowledge management support emerge. This paper aims at sensitizing and systematizing the needs and potentials for continuous knowledge flow and community engagement in this application area. It starts with an analysis of...

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  • White Papers // Apr 2009

    Success and Failure Factors for KM: The Utilization of Knowledge in the Swedish Armed Forces

    Developing successful Knowledge Management (KM) processes is extremely difficult. In general, a large number of all KM projects end unsuccessfully. This paper is to summarize and study the attempts to take advantage of lessons learned in the Swedish Armed Forces (SwAF), focusing on international missions. Relevant reports and literature have...

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  • White Papers // Jun 2009

    Causality Join Query Processing for Data Streams via a Spatiotemporal Sliding Window

    Data streams collected from sensors contain a large volume of useful information including causal relationships. Causality join query processing involves retrieving a set of pairs (cause, effect) from streams of data. However, some causal pairs may be omitted from the query result, due to the delay between sensors and the...

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  • White Papers // Jul 2009

    Online Detecting and Predicting Special Patterns over Financial Data Streams

    Online detecting special patterns over financial data streams is an interesting and significant work. Existing many algorithms take it as a subsequence similarity matching problem. However, pattern detection on streaming time series is naturally expensive by this means. An efficient segmenting algorithm ONSP (ONline Segmenting and Pruning) is proposed, which...

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  • White Papers // Jun 2008

    Structure and Semantics of Data-Intensive Web Pages: An Experimental Study on their Relationships

    In data-intensive web sites pages are generated by scripts that embed data from a backend database into HTML templates. There is usually a relationship between the semantics of the data in a page and its corresponding template. For example, in a web site about sports events, it is likely that...

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  • White Papers // Jul 2008

    An Optimization of CDN Using Efficient Load Distribution and RADS Caching Algorithm

    Now-a-days, while large-sized multimedia objects are becoming very popular throughout the Internet, one of the important issues appears to be the acceleration of Content Delivery Network (CDN) performance. CDN is a web system that delivers the web cached objects to the client and accelerates the web performance. Therefore the performance...

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  • White Papers // Oct 2008

    Comparative Aspects between the Cluster and Grid Implementations of BigBatch

    BigBatch is an image processing environment designed to process batches of thousands of monochromatic documents. One of the flexibilities and pioneer aspects of BigBatch is offering the possibility of working in distributed environments such as clusters and grids. This paper presents an overview of BigBatch image processing features and analyzes...

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  • White Papers // Feb 2007

    Internet Path Behavior Prediction via Data Mining: Conceptual Framework and Case Study

    In this paper the authors propose an application of data mining methods in the prediction of the availability and performance of Internet paths. They deploy a general decision-making method for advising the users in further usage of Internet path at particular time and date. The method is based on the...

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  • White Papers // Mar 2007

    Design and Implementation of the AMCC Self-Timed Microprocessor in FPGAs

    The development of processors with full custom technology has some disadvantages, such as the time used to design the processors and the cost of the implementation. In this paper the authors used the programmable circuits FPGA such as an option of low cost for the development and implementation of Self-Timed...

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  • White Papers // Mar 2007

    On Pipelining Sequences of Data-Dependent Loops

    Sequences of data-dependent tasks, each one traversing large data sets, exist in many applications (such as video, image and signal processing applications). Those tasks usually perform computations (with loop intensive behavior) and produce new data to be consumed by subsequent tasks. This paper shows a scheme to pipeline sequences of...

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  • White Papers // Aug 2007

    On the Use of a Reflective Architecture to Augment Database Management Systems

    The DataBase Management System (DBMS) used to be a commodity software component, with well known standard interfaces and semantics. However, the performance and reliability expectations being placed on DBMSs have increased the demand for variety add-ons that augment the functionality of the database in a wide range of deployment scenarios,...

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  • White Papers // Sep 2007

    Ontology and Grammar of the SOPHIE Choreography Conceptual Framework - An Ontological Model for Knowledge Management

    Ontologies have been recognized as a fundamental infrastructure for advanced approaches to Knowledge Management (KM) automation in SOA. Building services communicate with each other by exchanging self-contained messages. Depending on the specific requirements of the business model they serve and the application domain for which services were deployed, a number...

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  • White Papers // Oct 2007

    A Model of Immune Gene Expression Programming for Rule Mining

    Rule mining is an important issue in data mining. To address it, a novel Immune Gene Expression Programming (IGEP) model was proposed. Concepts of rule, gene, immune cell, and antibody were formalized. The dynamic evolution models and the corresponding recursive equations of immune cell, self, immune-tolerance were built. The novel...

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  • White Papers // Sep 2006

    UML-Based Modeling of Data-oriented WEB Applications

    Recently a growing demand has arisen for methods for the development of small and medium scale Web Information Systems (WIS). Web applications are being built in a rapidly changing environment where requirements are usually unstable. Short-time design and implementation are needed in response to the new technologies. The authors' paper...

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  • White Papers // Sep 2006

    Creation and Evaluation of Fuzzy Knowledge-base

    In this paper the authors give a possible model for handling uncertain information. The concept of fuzzy knowledge-base will be defined as a quadruple of any background knowledge, defined by the proximity of predicates and terms; a deduction mechanism: a fuzzy datalog program; a connecting algorithm, which connects the background...

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  • White Papers // Sep 2006

    Performance Modeling of Proxy Cache Servers

    In this paper the authors modify the performance model of Bose and Cheng to a more realistic case when external visits are also allowed to the remote Web servers and the Web servers have limited buffer. They analyze how many parameters affect the performance of a proxy cache server. Numerical...

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  • White Papers // Sep 2006

    Extension of CQL over Dynamic Databases

    CQL, Continuous Query Language is suitable for data stream queries. Sometimes it is better if the queries operate on relational databases and data streams simultaneously. The execution of a CQL query takes a long time (several hours, days or even more). It is not clear what kind of semantics is...

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  • White Papers // Jan 2008

    Using an Evolving Thematic Clustering in a Text Segmentation Process

    The thematic text segmentation task consists in identifying the most important thematic breaks in a document in order to cut it into homogeneous passages. The authors propose in this paper an algorithm for linear text segmentation on general corpuses. It relies on an initial clustering of the sentences of the...

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  • White Papers // Feb 2008

    Optimizing Assignment of Knowledge Workers to Office Space Using Knowledge Management Criteria

    Even though knowledge management has been around for more than a decade, so far concrete instruments that can be systematically deployed are still rare. This paper presents an optimization solution targeted at flexible management of office space considering knowledge management criteria in order to enhance knowledge work productivity. The paper...

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  • White Papers // Apr 2012

    Mapping and Scheduling in Heterogeneous NoC through Population-Based Incremental Learning

    Network-on-Chip (NoC) is a growing and promising communication paradigm for Multi-Processor-System-on-Chip (MPSoC) design, because of its scalability and performance features. In designing such systems, mapping and scheduling are becoming critical stages, because of the increase of both size of the network and application's complexity. Some reported solutions solve each issue...

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  • White Papers // Apr 2012

    ACO-based Algorithms for Search and Optimization of Routes in NoC Platform

    Network-on-Chip (NoC) has been used as an interesting option in design of communication infrastructures for embedded systems, providing a scalable structure and balancing the communication between cores. Because several data packets can be transmitted simultaneously through the network, an efficient routing strategy must be used in order to avoid congestion...

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  • White Papers // Apr 2012

    Designing Robust Routing Algorithms and Mapping Cores in Networks-on-Chip: A Multi-objective Evolutionary-based Approach

    Mainstream electronic designs are realized by Systems-on-Chips (SoCs) that push the limits of integration. The advancement of manufacturing technologies in terms of integration leads the people to SoCs with many (e.g., 10 - 1000) digital units (e.g., processor cores, controllers, storage and application-specific units) that need to be interconnected in...

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  • White Papers // May 2012

    Localized Processing and Analysis of Accelerometer Data in Detecting Traffic Events and Driver Behaviour

    Recent advancements in sensor technologies resulted in the development of sensors with small dimensions and with power consumption that is low enough to be embedded in various mobile devices and which is widely integrated in vehicles. Such sensors can be extensively used to detect real-time traffic events and situations of...

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  • White Papers // Jun 2012

    Design Choices Underlying the Software as a Service (SaaS) Business Model from the User Perspective: Exploring the Fourth Wave of Outsourcing

    Software-as-a-Service (SaaS) can be viewed as the fourth wave of outsourcing. SaaS is a relatively new type of service delivery model in which a service provider delivers its services over the web to many users on a pay per use or period basis. In the scarce literature available, the SaaS...

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  • White Papers // Jun 2012

    Utilization-level and Serviceability of a Social Name-card Portal for QoS in a Cloud Social Networking Service

    Various mobile-web services have expanded with the evolution of mobile Internet technologies and with the increasing variety of Smartphone in the proliferating cloud computing environment. Web services for the integration of cloud applications/services can be evaluated at the utilization-level as well as the serviceability of the service on the server...

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  • White Papers // Jun 2012

    Human and Intellectual Capital Management in the Cloud: Software Vendor Perspective

    Cloud systems have shifted traditional on-premise software products towards new and service oriented solutions. In order to adapt to this new trend, traditional software vendors are facing a necessary evolution towards service oriented software products. This software evolution is quite complex and full of problems. This paper presents lessons learned...

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  • White Papers // Jun 2012

    Towards a Practical Solution for Data Grounding in a Semantic Web Services Environment

    Grounding is the process in charge of linking requests and responses of web services with the semantic web services execution platform, and it is the key activity to automate their execution in a real business environment. In this paper, the authors introduce a practical solution for data grounding. On the...

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  • White Papers // Jun 2012

    Analysing the Security Risks of Cloud Adoption Using the SeCA Model: A Case Study

    When IS/IT needs to be replaced, cloud systems might provide a feasible solution. However, the adoption process thus far has gone undocumented and enterprise architects are troubled with proper hands-on tools missing, until very recently. This single case study describes a large Dutch utility provider in their effort to understand...

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  • White Papers // Jul 2012

    Optimized On-Chip-Pipelining for Memory-Intensive Computations on Multi-Core Processors with Explicit Memory Hierarchy

    Limited bandwidth to off-chip main memory tends to be a performance bottle-neck in chip multi-processors, and this will become even more problematic with an increasing number of cores. Especially for streaming computations where the ratio between computational work and memory transfer is low, transforming the program into more memory-efficient code...

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  • White Papers // Aug 2012

    Weaving Scholarly Legacy Data into Web of Data

    The linked open data project provides a new publishing paradigm for creating machine readable and structured data on the Web. Currently, the significant presence of data sets describing scholarly publications in the linked data cloud underpins the importance of linked data for the scientific community and for the open access...

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  • White Papers // Nov 2012

    Knowledge Management Initiatives in Offshore Software Development: Vendors' Perspectives

    Offshore Software Development (OSD) is a leading business sector in the global IT marketplace, and vendors in different countries are opening software development centers to take advantage of new business opportunities. However, software development is both a technical and a social process in which various software modules are integrated, requiring...

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  • White Papers // Jul 2013

    Web Resource Sense Disambiguation in Web of Data

    In this paper the authors introduce the use of WordNet as a resource for RDF web resources sense disambiguation in Web of data and show the role of designed system in interlinking datasets in Web of data and word sense disambiguation scope. They specify the core labeling properties in semantic...

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