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University of Sciences and Technology Houari Boumediene, Algeria
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4 Papers

Towards a Link Mapping and Evaluation Approach for Core Operational Business-IT Alignment

Topics: Models and Frameworks; Business Modeling and Business Process Management; Business-It Allignment; Measurements, Metrics and Evaluation of EA Artefacts and Processes

Authors: Ali Benjilany , Pascal André , Dalila Tamzalit and Hugo Bruneliere

Affiliation: Nantes Université, École Centrale Nantes, IMT Atlantique, CNRS, LS2N, UMR 6004, F-44000 Nantes, France

Digital Object Identifier: 10.5220/0012600600003690

Proceedings of ICEIS 2024, ISBN: 978-989-758-692-7

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Business-IT Alignment (BITA) is an important mean of evaluating the performance of IT systems operating within a business organisation. The software architects’ need for representing, analysing and interpreting the alignment situations remains among the main challenges. Despite different initiatives in the last two decades, available solutions remain too diverse and limited. As a consequence, more methodological guidelines are still needed to improve the support for BITA. In this paper, we address Core Operational BITA (COBITA) as a subset of BITA which targets the operational integration of business and application artefacts. To this end, we first propose two types of COBITA links between the business layer and the application one. We propose then an approach for establishing these links and evaluating them. The objective is to provide indicators for domain experts and software architects to assess the quality of the alignement between the two layers. We decided to choose Archimate, a standard language, to model the business and application layers. Then, we specify the two types of COBITA links to establish a mapping between the business and applications layers. Finally, we rely on the obtained cartography to evaluate the alignment via a set of proposed metrics and consistency rules. An initial version of the approach has been implemented in the Archi tool, and we experimented with it on the SoftSlate system.

A Fast and Efficient Inter Mode Decision Algorithm for the H.264/AVC Video Coding Standard

Topic: Image and Video Processing, Compression and Segmentation

Authors: Skoudarli Abdellah 1 , Nibouche Mokhtar 2 and Serir Amina 3

Affiliations: 1 Faculte of Electronics and Informatics USTHB, Algeria , 2 Frenchay Campus, United Kingdom , 3 FEI USTHB, Algeria

Digital Object Identifier: 10.5220/0004527800790085

Proceedings of SIGMAP 2013/ICETE, ISBN: 978-989-8565-74-7

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The H.264/AVC video coding standard is used in a wide range of applications from video conferencing to high-definition TV. Compared to the previous standard, the H.264/AVC has significantly better performance in terms of PSNR and visual quality at the same bit rate. It uses a complex mode decision technique based on rate-distortion optimization (RDO). Therefore, this technique introduces a high computational complexity. However, the computational complexity is one key challenge for the high efficient compression. In order to reduce the H.264/AVC complexity a new efficient and fast mode decision algorithm, based on the spatial homogeneity and temporal stationary characteristics of the current macroblock, is proposed in this paper. The experimental results show that the proposed algorithm is able to reduce up to 66,90 % of the computational complexity compared to the high complexity algorithm in the JM16.1 reference software with tolerant performance degradation.
Collapse Button Related Ontology Subjects/Areas/Topics (4)
Image and Video Processing, Compression and Segmentation

Multimedia Signal Processing

Telecommunications
Multimedia

Service based Approach for Adaptability of Workflow Models - The Subcontracting Architecture

Topics: Virtual Enterprises; Business Modeling and Business Process Management; EA and Service Oriented Architecture (SOA)

Authors: Saida Boukhedouma 1 , Mourad Oussalah 2 , Zaia Alimazighi 3 and Dalila Tamzalit 2

Affiliations: 1 USTHB- FEI and University of Nantes, Algeria , 2 University of Nantes, France , 3 USTHB- FEI, Algeria

Digital Object Identifier: 10.5220/0004008702240231

Proceedings of ICEIS 2012, ISBN: 978-989-8565-12-9

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The environment of businesses is naturally unstable and dynamic due to increasing market constraints and events. Thus business processes are frequently subject to changes which must be supported by process models and systems that implement them. This paper deals with adaptation of IOWF (Inter-Organizational Workflow) process models based on services. It states conceptually, the most frequent adaptations that can be operated on IOWF models described through the concept of orchestration function which abstracts the control flow of the process. Thus, operations of adaptation turn to modification of services and transformation of the orchestration function describing the model. We particularly distinguish evolutive adaptation leading to expansion of the cooperation and/or the global functionality of the process.
Collapse Button Related Ontology Subjects/Areas/Topics (3)
Enterprise Information Systems

Software Agents and Internet Computing

Virtual Enterprises

EVOLUTION STYLES IN PRACTICE - Refactoring Revisited as Evolution Style

Topics: Software Maintenance; Knowledge Representation

Authors: Olivier Le Goaer 1 , Mourad Oussalah 1 , Dalila Tamzalit 1 and Djamel Serai 2

Affiliations: 1 LINA, University of Nantes, France , 2 Ecole des Mines de Douai, France

Digital Object Identifier: 10.5220/0001341401380143

Proceedings of ICSOFT 2007, ISBN: 978-989-8111-06-7

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The evolution of pure software systems remains a time-consuming and error-prone activity. But whatever the considered domain, recurring practices can be captured and reused to alleviate the subsequent amounts of effort. In this paper we propose to treat domain-specific problems-solutions pairs as first-class entities called “evolution styles”. As such, an evolution style is endowed with an instantiation mechanism and can be considered at different conceptual levels. Applied on arbitrary domains, an evolution style is intended to evolve a family of applications whereas its instances evolve given applications. The evolution style’s format is a component triple where each component is highly reusable. In this way, evolution styles are scalable knowledge fragments able to support large and complex evolutions, readily available to be played and replayed.
Collapse Button Related Ontology Subjects/Areas/Topics (10)
Applications

Knowledge-Based Systems

Pattern Recognition

Artificial Intelligence

Maintenance

Software Engineering

Knowledge Engineering and Ontology Development

Operational Research

Symbolic Systems
Knowledge Representation

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