تتناول هذه الدراسة تدريب القوة العضلية في حالتي التقلص المركزي والتقلص اللامركزي، وتأثيرهما على كمية كريات الدم البيضاء والتغيرات التي تحدث فيها، بغية معرفة مدى تأثير كل نمط تدريب على هذا المكون الدموي، وإن كان الكريات البيض تعد مبينا لما يحدث على مستوى النسيج العضلي المتعرض لتدريب القوة العضلية في هاذين النمطين، وذلك لدى عينة قصدية من نخبة رياضة الجودو قوامها 10 رياضيين مقسمين إلى مجموعتين، مجموعة معنية بالتقلص المركزي والأخرى بالتقلص اللامركزي، واعتمدنا على الاختبارات البدنية (1RM) لتقنين الأحمال حسب متطلبات الطريقة المستخدمة في الحصة التجريبية (10×10)، وعلى التحليلات الدموية في 3 مراحل (قبلي، بعدي، تتبعي). وبعد جمع البيانات ومعالجتها إحصائيا تم تأكيد الفرضية القائلة بأن تأثير الحصة التدريبية للقوة العضلية المقترحة يختلف بشكل كبير حسب حالات التقلص العضلي (المركزي، اللامركزي)، وخلصنا إلى أن تدريب القوة العضلية يختلف تأثيره على كريات الدم البيضاء حسب نوع التقلص العضلي، وأن النمط اللامركزي يتميز بإحداث تلف كبير على مستوى النسيج العضلي وفترة استشفاءه كبيرة لكن نتائجه أفضل، مقارنة بالنمط المركزي. الكلمات المفتاحية: التدريب الرياضي؛ القوة العضلية؛ التقلص المركزي؛ التقلص اللامركزي؛ كريات الدم البيضاء؛ تلف الخلايا العضلية.

تتناول هذه الدراسة تدريب القوة العضلية في حالتي التقلص المركزي والتقلص اللامركزي، وتأثيرهما على كمية كريات الدم البيضاء والتغيرات التي تحدث فيها، بغية معرفة مدى تأثير كل نمط تدريب على هذا المكون الدموي، وإن كان الكريات البيض تعد مبينا لما يحدث على مستوى النسيج العضلي المتعرض لتدريب القوة العضلية في هاذين النمطين، وذلك لدى عينة قصدية من نخبة رياضة الجودو قوامها 10 رياضيين مقسمين إلى مجموعتين، مجموعة معنية بالتقلص المركزي والأخرى بالتقلص اللامركزي، واعتمدنا على الاختبارات البدنية (1RM) لتقنين الأحمال حسب متطلبات الطريقة المستخدمة في الحصة التجريبية (10×10)، وعلى التحليلات الدموية في 3 مراحل (قبلي، بعدي، تتبعي). وبعد جمع البيانات ومعالجتها إحصائيا تم تأكيد الفرضية القائلة بأن تأثير الحصة التدريبية للقوة العضلية المقترحة يختلف بشكل كبير حسب حالات التقلص العضلي (المركزي، اللامركزي)، وخلصنا إلى أن تدريب القوة العضلية يختلف تأثيره على كريات الدم البيضاء حسب نوع التقلص العضلي، وأن النمط اللامركزي يتميز بإحداث تلف كبير على مستوى النسيج العضلي وفترة استشفاءه كبيرة لكن نتائجه أفضل، مقارنة بالنمط المركزي. الكلمات المفتاحية: التدريب الرياضي؛ القوة العضلية؛ التقلص المركزي؛ التقلص اللامركزي؛ كريات الدم البيضاء؛ تلف الخلايا العضلية.

Thermal runaway of a chemical process is a dangerous phenomenon that threatens human life, equipment, installations, and the environment. The aim of our work is to propose a methodology for analyzing and quantitatively assessing the risk of thermal runaway in a polymerization reactor. Firstly, HAZard and OPerability analysis(HAZOP)is used to determine the most critical deviations likely to occur in the polymerization reactor under study and leading to the thermal runaway phenomenon. The various accident sequences are determined and evaluated using event tree analysis (ETA). The causes of the failure of safety barriers implemented in the reactor to prevent the runaway phenomenon are determined using fault tree analysis (FTA). Finally, an economic analysis is carried out to show the economic impact of safety failure barriers on the company. Application resultsof the proposed methodology show its relevance as a decision-making tool for good industrial risk management. The novelty of this hybrid approach lies in its systematic workflow. Qualitative identification (HAZOP) directly informs quantitative frequency estimation (ETA), which in turn relies on detailed reliability analysis (FTA) to assess safety barrier performance. This integrated methodology not only provides a quantitative risk frequency but also identifies the most critical safety barriers and offers an economic rationale for investment decisions through cost-benefit analysis (CBA), thereby bridging the gap between technical risk assessment and managerial decision-making

Thermal runaway of a chemical process is a dangerous phenomenon that threatens human life, equipment, installations, and the environment. The aim of our work is to propose a methodology for analyzing and quantitatively assessing the risk of thermal runaway in a polymerization reactor. Firstly, HAZard and OPerability analysis(HAZOP)is used to determine the most critical deviations likely to occur in the polymerization reactor under study and leading to the thermal runaway phenomenon. The various accident sequences are determined and evaluated using event tree analysis (ETA). The causes of the failure of safety barriers implemented in the reactor to prevent the runaway phenomenon are determined using fault tree analysis (FTA). Finally, an economic analysis is carried out to show the economic impact of safety failure barriers on the company. Application resultsof the proposed methodology show its relevance as a decision-making tool for good industrial risk management. The novelty of this hybrid approach lies in its systematic workflow. Qualitative identification (HAZOP) directly informs quantitative frequency estimation (ETA), which in turn relies on detailed reliability analysis (FTA) to assess safety barrier performance. This integrated methodology not only provides a quantitative risk frequency but also identifies the most critical safety barriers and offers an economic rationale for investment decisions through cost-benefit analysis (CBA), thereby bridging the gap between technical risk assessment and managerial decision-making

Thermal runaway of a chemical process is a dangerous phenomenon that threatens human life, equipment, installations, and the environment. The aim of our work is to propose a methodology for analyzing and quantitatively assessing the risk of thermal runaway in a polymerization reactor. Firstly, HAZard and OPerability analysis(HAZOP)is used to determine the most critical deviations likely to occur in the polymerization reactor under study and leading to the thermal runaway phenomenon. The various accident sequences are determined and evaluated using event tree analysis (ETA). The causes of the failure of safety barriers implemented in the reactor to prevent the runaway phenomenon are determined using fault tree analysis (FTA). Finally, an economic analysis is carried out to show the economic impact of safety failure barriers on the company. Application resultsof the proposed methodology show its relevance as a decision-making tool for good industrial risk management. The novelty of this hybrid approach lies in its systematic workflow. Qualitative identification (HAZOP) directly informs quantitative frequency estimation (ETA), which in turn relies on detailed reliability analysis (FTA) to assess safety barrier performance. This integrated methodology not only provides a quantitative risk frequency but also identifies the most critical safety barriers and offers an economic rationale for investment decisions through cost-benefit analysis (CBA), thereby bridging the gap between technical risk assessment and managerial decision-making

Thermal runaway of a chemical process is a dangerous phenomenon that threatens human life, equipment, installations, and the environment. The aim of our work is to propose a methodology for analyzing and quantitatively assessing the risk of thermal runaway in a polymerization reactor. Firstly, HAZard and OPerability analysis(HAZOP)is used to determine the most critical deviations likely to occur in the polymerization reactor under study and leading to the thermal runaway phenomenon. The various accident sequences are determined and evaluated using event tree analysis (ETA). The causes of the failure of safety barriers implemented in the reactor to prevent the runaway phenomenon are determined using fault tree analysis (FTA). Finally, an economic analysis is carried out to show the economic impact of safety failure barriers on the company. Application resultsof the proposed methodology show its relevance as a decision-making tool for good industrial risk management. The novelty of this hybrid approach lies in its systematic workflow. Qualitative identification (HAZOP) directly informs quantitative frequency estimation (ETA), which in turn relies on detailed reliability analysis (FTA) to assess safety barrier performance. This integrated methodology not only provides a quantitative risk frequency but also identifies the most critical safety barriers and offers an economic rationale for investment decisions through cost-benefit analysis (CBA), thereby bridging the gap between technical risk assessment and managerial decision-making

This paper presents ELAREES, a task scheduling algorithm for heterogeneous multiprocessor real-time systems, designed to optimize energy savings while enhancing fault tolerance. ELAREES addresses the dual challenges of fault tolerance in task execution and communication reliability between tasks, alongside efficient power management. The algorithm employs a primary/backup strategy, assigning each task a primary execution on a low-power (LP) core and a backup on a high-performance (HP) core to ensure resilience against execution faults. Furthermore, ELAREES integrates a robust communication protocol that monitors data transmission over shared media connection buses, dynamically selecting optimal transmission paths and initiating retransmissions when necessary to mitigate communication errors. By leveraging Dynamic Voltage and Frequency Scaling (DVFS) and Dynamic Power Management (DPM) techniques, ELAREES achieves significant power savings while maintaining high system reliability. Simulation results demonstrate consistent power savings of approximately 30% across various scenarios, with only a minimal impact of 0.02% on reliability. This research contributes to the field of energy-efficient computing in real-time systems, offering a comprehensive solution for managing the trade-offs between energy consumption, execution fault tolerance, and communication reliability in heterogeneous multicore environments.

This paper presents ELAREES, a task scheduling algorithm for heterogeneous multiprocessor real-time systems, designed to optimize energy savings while enhancing fault tolerance. ELAREES addresses the dual challenges of fault tolerance in task execution and communication reliability between tasks, alongside efficient power management. The algorithm employs a primary/backup strategy, assigning each task a primary execution on a low-power (LP) core and a backup on a high-performance (HP) core to ensure resilience against execution faults. Furthermore, ELAREES integrates a robust communication protocol that monitors data transmission over shared media connection buses, dynamically selecting optimal transmission paths and initiating retransmissions when necessary to mitigate communication errors. By leveraging Dynamic Voltage and Frequency Scaling (DVFS) and Dynamic Power Management (DPM) techniques, ELAREES achieves significant power savings while maintaining high system reliability. Simulation results demonstrate consistent power savings of approximately 30% across various scenarios, with only a minimal impact of 0.02% on reliability. This research contributes to the field of energy-efficient computing in real-time systems, offering a comprehensive solution for managing the trade-offs between energy consumption, execution fault tolerance, and communication reliability in heterogeneous multicore environments.

This paper presents ELAREES, a task scheduling algorithm for heterogeneous multiprocessor real-time systems, designed to optimize energy savings while enhancing fault tolerance. ELAREES addresses the dual challenges of fault tolerance in task execution and communication reliability between tasks, alongside efficient power management. The algorithm employs a primary/backup strategy, assigning each task a primary execution on a low-power (LP) core and a backup on a high-performance (HP) core to ensure resilience against execution faults. Furthermore, ELAREES integrates a robust communication protocol that monitors data transmission over shared media connection buses, dynamically selecting optimal transmission paths and initiating retransmissions when necessary to mitigate communication errors. By leveraging Dynamic Voltage and Frequency Scaling (DVFS) and Dynamic Power Management (DPM) techniques, ELAREES achieves significant power savings while maintaining high system reliability. Simulation results demonstrate consistent power savings of approximately 30% across various scenarios, with only a minimal impact of 0.02% on reliability. This research contributes to the field of energy-efficient computing in real-time systems, offering a comprehensive solution for managing the trade-offs between energy consumption, execution fault tolerance, and communication reliability in heterogeneous multicore environments.

Le présent article propose une étude portant sur "Les Porteurs de Feu" de Salah Stétié. Dans cet essai, Stétié s'appuie sur la voix du mythe, qui s'imprègne du texte pour en devenir le cœur battant, afin de dresser un vibrant hommage à la poésie arabe. Il y attribue également aux poètes arabes le rôle d’alchimistes qui transforment l’imaginaire en réalité en se servant du pouvoir de la création verbale Mots-clés : mythe , alchimistes, imaginaire, poésie arabe.

In this paper, we investigate the connections between certain spec-tra arising from Fredholm theory of a generalized Drazin invertible bounded linear operator and those of its generalized Drazin inverse. Furthermore, we analyze the transfer of Browder’s theorem and its generalized form from such an operator to its corresponding generalized Drazin inverse. Applications to left, right, and multiplication operators are also presented.