Tunisia

Moncef Baati(몬세프바티) 명지대학교 중동문제연구소 2006 중동문제연구 Vol.5 No.-

튀니지는 북아프리카국가 중에서도 가장 개방된 나라로서 시장자본주의 경제체제의 도입에 박차를 가하고 있다. 경제적으로 지역무역협력을 우선 과제로 하여, 모로코와 함께 아랍마그립 연합의 결성을 주도하여 북아프리카 아랍권 국가의 경제공동체 형성을 모색하는 동시에, EU와의 단일 시장을 추구하고 있다. 튀니지의 경제 환경과 투자 여건 및 튀니지의 경제동향 및 통상정책을 중심으로 튀니지의 산업과 경제 환경을 소개하고, AMU 내에서 지역무역협력, EU 등과의 지역간 통상협력 가능성 및 발전가능성을 분석한였다. 아울러, 튀니지 경제정책을 전체적으로 분석하고 대외경제 발전 과정에 초점을 맞추어 세계화정책을 평가하였다.

HEREDITARY HEMIMORPHY OF {-k}-HEMIMORPHIC TOURNAMENTS FOR k ≥ 5

Moncef Bouaziz,Youssef Boudabbous,Nadia El Amri 대한수학회 2011 대한수학회지 Vol.48 No.3

Let T = (V,A) be a tournament. With every subset X of V is associated the subtournament T[X] = (X,A ∩ (X ×X)) of T, induced by X. The dual of T, denoted by T*, is the tournament obtained from T by reversing all its arcs. Given a tournament T'=(V,A') and a nonnegative integer k, T and T' are {-k}-hemimorphic provided that for all X ⊂ V , with │X│= k, T[V-X] and T'[V-X] or T*[V-X] and T'[V-X]are isomorphic. The tournaments T and T' are said to be hereditarily hemimorphic if for all subset X of V , the subtournaments T[X] and T'[X]are hemimorphic. The purpose of this paper is to establish the hereditary hemimorphy of the {-k}-hemimorphic tournaments on at least k + 7vertices, for every k ≥ 5.

Seismic behaviour of repaired superelastic shape memory alloy reinforced concrete beam-column joint

Moncef Nehdi,M. Shahria Alam,Maged A. Youssef 국제구조공학회 2011 Smart Structures and Systems, An International Jou Vol.7 No.5

Large-scale earthquakes pose serious threats to infrastructure causing substantial damage and large residual deformations. Superelastic (SE) Shape-Memory-Alloys (SMAs) are unique alloys with the ability to undergo large deformations, but can recover its original shape upon stress removal. The purpose of this research is to exploit this characteristic of SMAs such that concrete Beam-Column Joints (BCJs) reinforced with SMA bars at the plastic hinge region experience reduced residual deformation at the end of earthquakes. Another objective is to evaluate the seismic performance of SMA Reinforced Concrete BCJs repaired with flowable Structural-Repair-Concrete (SRC). A ¾-scale BCJ reinforced with SMA rebars in the plastic-hinge zone was tested under reversed cyclic loading, and subsequently repaired and retested. The joint was selected from an RC building located in the seismic region of western Canada. It was designed and detailed according to the NBCC 2005 and CSA A23.3-04 recommendations. The behaviour under reversed cyclic loading of the original and repaired joints, their load-storey drift, and energy dissipation ability were compared. The results demonstrate that SMA-RC BCJs are able to recover nearly all of their post-yield deformation, requiring a minimum amount of repair, even after a large earthquake, proving to be smart structural elements. It was also shown that the use of SRC to repair damaged BCJs can restore its full capacity.

De L`ancienne Ifriqiya a La Tunisie moderne; Rencontres avec La Coree

( Moncef Baati ) 서울대학교 불어문화권연구소 2007 불어문화권연구 Vol.17 No.-

Tout d`abord, je voudrais saluer Dr Lee Jang-Moo, President de l`Universite Nationale de Seoul pour l`accueil qu`il nous a reserve a notre arrivee a cet auguste Universite. Mes vifs remerciements vont au Prof. CHOI Kwon-Hang, Directeur du Centre de Recherches sur la Francophonie au Departement de Langue et Litterature francaises a l`Universite Nationale de Seoul, pour nous avoir donne l`occasion de nous reunir autour de cette table et de discuter de la cooperation entre l`Afrique et la Coree et ses perspectives de developpement. Je salue aussi l`excellente idee de la prochaine creation d`un Centre d`Etudes Africaines a l`Universite Nationale de Seoul qui ne fera que contribuer a une meilleure comprehension entre les deux partenaires et constituer un cadre de reflexions sur les voies et moyens a meme de renforcer davantage le dialogue et la cooperation entre l`Afrique et la Coree. Par cette intervention, sous le titre “De l`ancienne Ifriqiya a la Tunisie moderne; Rencontres avec la Coree” Je vais essayer de souligner quelques aspects qui caracterisent l`etat actuel des relations entre l`Afrique et la Coree dans le domaine culturel (1) avant de reflechir avec vous sur les grandes potentialites de cooperation qui existent entre l`Afrique et la Coree et l`important role que peuvent jouer les echanges culturels dans l`ancrage et la perennisation de cette cooperation.(2)

Seismic behaviour of repaired superelastic shape memory alloy reinforced concrete beam-column joint

Nehdi, Moncef,Alam, M. Shahria,Youssef, Maged A. Techno-Press 2011 Smart Structures and Systems, An International Jou Vol.7 No.5

Large-scale earthquakes pose serious threats to infrastructure causing substantial damage and large residual deformations. Superelastic (SE) Shape-Memory-Alloys (SMAs) are unique alloys with the ability to undergo large deformations, but can recover its original shape upon stress removal. The purpose of this research is to exploit this characteristic of SMAs such that concrete Beam-Column Joints (BCJs) reinforced with SMA bars at the plastic hinge region experience reduced residual deformation at the end of earthquakes. Another objective is to evaluate the seismic performance of SMA Reinforced Concrete BCJs repaired with flowable Structural-Repair-Concrete (SRC). A $\frac{3}{4}$-scale BCJ reinforced with SMA rebars in the plastic-hinge zone was tested under reversed cyclic loading, and subsequently repaired and retested. The joint was selected from an RC building located in the seismic region of western Canada. It was designed and detailed according to the NBCC 2005 and CSA A23.3-04 recommendations. The behaviour under reversed cyclic loading of the original and repaired joints, their load-storey drift, and energy dissipation ability were compared. The results demonstrate that SMA-RC BCJs are able to recover nearly all of their post-yield deformation, requiring a minimum amount of repair, even after a large earthquake, proving to be smart structural elements. It was also shown that the use of SRC to repair damaged BCJs can restore its full capacity.

HEREDITARY HEMIMORPHY OF {-κ}-HEMIMORPHIC TOURNAMENTS FOR ≥ 5

Bouaziz, Moncef,Boudabbous, Youssef,Amri, Nadia El Korean Mathematical Society 2011 대한수학회지 Vol.48 No.3

Let T = (V,A) be a tournament. With every subset X of V is associated the subtournament T[X] = (X, A ${\cap}$ (X${\times}$X)) of T, induced by X. The dual of T, denoted by $T^*$, is the tournament obtained from T by reversing all its arcs. Given a tournament T' = (V,A') and a non-negative integer ${\kappa}$, T and T' are {$-{\kappa}$}-hemimorphic provided that for all X ${\subset}$ V, with ${\mid}X{\mid}$ = ${\kappa}$, T[V-X] and T'[V-X] or $T^*$[V-X] and T'[V-X] are isomorphic. The tournaments T and T' are said to be hereditarily hemimorphic if for all subset X of V, the subtournaments T[X] and T'[X] are hemimorphic. The purpose of this paper is to establish the hereditary hemimorphy of the {$-{\kappa}$}-hemimorphic tournaments on at least k + 7 vertices, for every ${\kappa}{\geq}5$.

Generic Framework for Holonic Modelling and Multi-Agent Based Verification of Reconfigurable Manufacturing Systems

Abdelmonaam Abid,Moncef Hammadi,Maher Barkallah,Jean-Yves Choley,Jamel Louati,Alain Rivière,Mohamed Haddar 한국정밀공학회 2018 International Journal of Precision Engineering and Vol.19 No.12

Globalization and mass customization are demanding a higher level of productivity. The relevance of modelling approaches to the study and design of reconfigurable manufacturing system (RMS) is widely claimed to achieve the highest productivity. Principally, reconfigurability in manufacturing systems should support the changeability with precisely the production capacity and functionality needed and exactly when needed. Simulation of such reconfigurable systems has become more and more difficult with the increasing complexity of system requirements. In spite of the promising methodology for designing RMS, an effective framework that bridges the gap between conceptual modelling level process and simulation level process is still a major challenge for Scientist. For this reason, we propose in this paper a generic framework especially designed for building and running executable agent-based models of RMS. This framework relies on SysML (Systems Modelling Language) models specifications, the holonic system techniques and multi-agent system in order to generate executable models of RMS. The considered case study for this paper is based on a steel converter process. Results showed an increase in the productivity rate after simulating the reconfigurability test cases through the developed agent-based models.

Ultrasonic velocity measurements in isobutyric acid - water binary mixtures over the temperature range from 300.15 to 313.15 K

Radhia Trabelsi,Moncef Bouanz,Adel Toumi 한국화학공학회 2018 Korean Journal of Chemical Engineering Vol.35 No.8

We measured the ultrasonic velocity, U, density, , and viscosity,  in Isobutyric acid - water binary liquid mixtures over the entire composition range at temperatures ranging from 300.15 to 313.15 K under atmospheric pressure. The experimental data values were analyzed to determine, various acoustical parameters: adiabatic compressibility, , acoustic impedance, Z, free length, Lf, free volume, Vf, molar volume, Vm, relaxation time, , absorption coefficient, /f2, internal pressure,  i, Gibb’s free energy, G, cohesive energy, CE, Wada’s constant, W, Rao’s constant, Rm and relative association, RA. The variation of these parameters versus the mixture composition was explained on the basis of the intermolecular interactions between the components of the mixture.

Seismic performance of concrete frame structures reinforced with superelastic shape memory alloys

M. Shahria Alam,Moncef Nehdi,Maged A. Youssef 국제구조공학회 2009 Smart Structures and Systems, An International Jou Vol.5 No.5

Superelastic Shape Memory Alloys (SMAs) are gaining acceptance for use as reinforcing bars in concrete structures. The seismic behaviour of concrete frames reinforced with SMAs is being assessed in this study. Two eight-storey concrete frames, one of which is reinforced with regular steel and the other with SMAs at the plastic hinge regions of beams and regular steel elsewhere, are designed and analyzed using 10 different ground motion records. Both frames are located in the highly seismic region of Western Canada and are designed and detailed according to current seismic design standards. The validation of a finite element (FE) program that was conducted previously at the element level is extended to the structure level in this paper using the results of a shake table test of a three-storey moment resisting steel RC frame. The ten accelerograms that are chosen for analyzing the designed RC frames are scaled based on the spectral ordinate at the fundamental periods of the frames. The behaviour of both frames under scaled seismic excitations is compared in terms of maximum inter-storey drift, top-storey drift, inter-storey residual drift, and residual top-storey drift. The results show that SMA-RC frames are able to recover most of its post-yield deformation, even after a strong earthquake.

Disassembly Process Planning and Its Lines Balancing Prediction

Mahdi Aicha,Imen Belhadj,Moncef Hammadi,Nizar Aifaoui 한국정밀공학회 2023 International Journal of Precision Engineering and Vol.10 No.6

Design centers and industrial organizations emphasize that process planning is one of the most important pillars that guarantee an efficient production system, as it represents the principal link between design and manufacturing in target of avoiding time and cost wastes. In order to ensure an effective assembly/disassembly process implementation, several parameters have to be properly treated during the planning phase: product data collection and analysis, alignment with customer demand forecast, capacity calculation and equipment/tools planning, in addition to identify layout steps and process setting-up phases. One of the most important procedures that initiate a product remanufacturability and recyclability is disassembly process. That’s why it is mandatory to predict the disassembly process planning and predefine it in advance. This research paper proposes an analytical formulation of disassembly process planning prediction: it is a proactive procedure which model need of equipment, layout and line balancing from the early design phase of product. The disassembly process elements are defined with reference to a previously extracted disassembly plans (DP) from literature, and the disassembly process planning prediction is applied on an optimal disassembly plan selected based on two combined indicators which are Quality index (Qi) and timing index (Ti).