Taicir LOUKIL - Academia.edu (original) (raw)

Papers by Taicir LOUKIL

La conception constitue une des étapes la plus importante dans le cycle de vie d'un atelier de pr... more La conception constitue une des étapes la plus importante dans le cycle de vie d'un atelier de production. Un des problèmes à soulever est le dimensionnement des ressources. Un sur ou un sous dimensionnement provoquera des sur-coûts supplémentaires. Il conditionnera aussi l'ordonnancement pendant la phase d'exploitation. Nous proposons dans ce papier une approche d'optimisation du dimensionnement d'un atelier de production basé sur les ordonnancements des scénarios de production prévisionnels. Nous nous intéressons à une organisation de flow shop hybride à plusieurs étages. En effet, nous proposons un programme linéaire permettant de minimiser conjointement le C max et le nombre de machines dans chaque étage pour un ensemble de jobs types de l'activité prévisionnelle. Un poids est attribué à chacun des objectifs. Au vu des résultats obtenus, cette approche peut fournir des solutions exactes pour des problèmes de petites tailles. Dans le cas où le poids attribué à chaque objectif est le même nous obtenons des solutions dites de « compromis ». Ces solutions de compromis ont permis de minimiser les coûts totaux.

Academic Journal of Interdisciplinary Studies, Sep 2, 2022

The narcissism of leaders has been studied as a negative trait. It is a personality disorder rela... more The narcissism of leaders has been studied as a negative trait. It is a personality disorder related to the constant aspiration for power, superiority over others, and a lack of empathy with others and their exploitation to achieve personal ends. Narcissists often seek leadership and work for their interests, and these behaviors affect workers' lower levels of performance, creativity, and productivity. This, in turn, leads to higher levels of burnout, job turnover, and other organizational diseases because the traits of leaders and their actual behavior complement each other. Therefore, this research aims to study the relationship between narcissistic leadership with its dimensions (arrogance, authority) and workers' performance (organizational commitment, job satisfaction, creativity, productivity). The research sample was represented in Baghdad College of Economic Sciences University / Iraq, and the research sample amounted to (77) individuals. The research relied on the questionnaire as the main tool to collect data to conduct statistical analyses. As (87) questionnaires were distributed to the employees of the researched college, the number of retrieved questionnaires was (77) valid for analysis. The data was analyzed using (SPSS V.25) and (Amos V.25). Many statistical methods were used to achieve the research objectives, represented by (arithmetic mean, standard deviation, coefficient of variation, Pearson correlation coefficient, and simple linear regression). The most important findings of the research are the adverse effect of narcissistic leadership on workers' performance. The more there is narcissistic leadership in the college understudy, the more it negatively contributes to the performance levels of employees.

IFAC-PapersOnLine, 2019

Abstract Home health care (HHC) companies provide a wide range of medical and social services to ... more Abstract Home health care (HHC) companies provide a wide range of medical and social services to patients in their own homes to help them rehabilitate after illness or injury. Providing high-quality services and reducing operating costs are accessible through proper planning of different sectors of HHC companies. This study presents a mathematical model integrated with real-life constraints to address a home health care routing and scheduling problem (HHCRSP). The planning takes into account temporal precedence and synchronization constraints and limited allowable times for transferring collected biological samples to the laboratory in the pickup and delivery environment. This problem is a new variant of the vehicle routing problem with time windows (VRPTW) with the aim of minimizing the cost related to the transportation and the idle time of caregivers by assigning proper caregivers with required qualifications to patients based on their disjunctive needs. Simulated annealing (SA) and tabu search (TS) are two meta-heuristics applied in two phases for each instance to schedule primary tasks in the first step, and then synchronized services in the next phase. The Solomon’s benchmark is used for generating comparative experiments.

2022 14th International Colloquium of Logistics and Supply Chain Management (LOGISTIQUA), May 25, 2022

In Operation Research, many scientific researchers place great importance on the people's sat... more In Operation Research, many scientific researchers place great importance on the people's satisfactions, needs and the improvement of the living conditions. They shed light on Home (Health)-Care services aspects related to the vehicle routing problems (VRP). Very large number of VRP variants are with many similarities, but differ in structure. In this paper, a new variant of vehicle routing problems with new type of temporal constraints is presented, a new set of instances is generated and the numerical results are obtained with Cplex.

Computers in Industry, Sep 1, 2016

The rail-road π-hub allocation problem for the newly proposed physical internet concept is studie... more The rail-road π-hub allocation problem for the newly proposed physical internet concept is studied.Both static and dynamic scenarios are considered.For static case, heuristic and Simulating Annealing based approaches are proposed.Multi-agent based approach is proposed to deal with dynamic scenarios in case of perturbations.All approaches are evaluated on simulated scenarios. This research concerns an allocation problem in the context of the physical internet aimed at improving rail-road π-hub efficiency by optimizing the distance travelled by each container to the dock, as well as the number of trucks used. To achieve this, heuristic, metaheuristic and Multi-agent-based approaches are proposed. When given the sequence of all the containers in the train, the proposed heuristic approach can assign these containers to outbound doors. Then, the Simulating Annealing (SA) method improves this allocation by minimizing the distance travelled. In addition, a multi-agent system model is proposed to generate reactive solutions which take dynamic aspects into account.The experimental results show that the proposed SA yields an improvement of about 2.42-7.67% in relation to the solution generated by the heuristic; it provides good results within a reasonable time. Conversely, the multi-agent-based approach provides good solutions in case of perturbations or unexpected events.

Academic Journal of Interdisciplinary Studies, Sep 2, 2022

The narcissism of leaders has been studied as a negative trait. It is a personality disorder rela... more The narcissism of leaders has been studied as a negative trait. It is a personality disorder related to the constant aspiration for power, superiority over others, and a lack of empathy with others and their exploitation to achieve personal ends. Narcissists often seek leadership and work for their interests, and these behaviors affect workers' lower levels of performance, creativity, and productivity. This, in turn, leads to higher levels of burnout, job turnover, and other organizational diseases because the traits of leaders and their actual behavior complement each other. Therefore, this research aims to study the relationship between narcissistic leadership with its dimensions (arrogance, authority) and workers' performance (organizational commitment, job satisfaction, creativity, productivity). The research sample was represented in Baghdad College of Economic Sciences University / Iraq, and the research sample amounted to (77) individuals. The research relied on the questionnaire as the main tool to collect data to conduct statistical analyses. As (87) questionnaires were distributed to the employees of the researched college, the number of retrieved questionnaires was (77) valid for analysis. The data was analyzed using (SPSS V.25) and (Amos V.25). Many statistical methods were used to achieve the research objectives, represented by (arithmetic mean, standard deviation, coefficient of variation, Pearson correlation coefficient, and simple linear regression). The most important findings of the research are the adverse effect of narcissistic leadership on workers' performance. The more there is narcissistic leadership in the college understudy, the more it negatively contributes to the performance levels of employees.

International Journal of Logistics Systems and Management

2023 International Conference On Cyber Management And Engineering (CyMaEn)

2022 14th International Colloquium of Logistics and Supply Chain Management (LOGISTIQUA)

2022 14th International Colloquium of Logistics and Supply Chain Management (LOGISTIQUA)

HAL (Le Centre pour la Communication Scientifique Directe), May 28, 2014

2019 International Colloquium on Logistics and Supply Chain Management (LOGISTIQUA)

In designing the mobility of modern cities it has become important to take into account the conce... more In designing the mobility of modern cities it has become important to take into account the concept of flexible transport services. Traditional public transportation has shown its limitations to satisfy the changes in growing cities and particularly unable to adapt to particular events or particular people such as transportation of unable or elderly people that concerns significantly user's transportation. Moreover, the door-to-door transportation is sometimes too expensive. For that, this paper considers the Integrated Dial-A-Ride Problem (IDARP) which is a special case of the Dial-A-Ride Problem (DARP). It deals with the scheduling of vehicles to insure the transportation of the passengers, with the integration of the fixed route service to the DARP. We have proposed a new formulation for the Integrated Dial-A-Ride Problem with timetabled fixed route service (IDARP-TT) with the objective of minimizing the combined operational costs and the waiting time.

2016 IEEE/ACS 13th International Conference of Computer Systems and Applications (AICCSA)

In this paper a new road-rail terminal design called road-rail PI hub is adapted to the usual cha... more In this paper a new road-rail terminal design called road-rail PI hub is adapted to the usual challenges of the intermodal transport which are time and cost. This research aims to find the “best” allocation of containers in a rail-road PI hub where a set of containers must be transferred from railcars to outgoing trucks using the sorters. The main goal is to minimize the used number of trucks. To achieve this, heuristic approach in static and dynamic case is proposed. Then results are compared to the upper bound and the FIFO method. The experimental results show that the proposed heuristic gives better results compared to the solution generated by FIFO;

Supply Chain Forum: An International Journal

Sustainability legislation, new consumer behaviour and the complexity of global trade are increas... more Sustainability legislation, new consumer behaviour and the complexity of global trade are increasingly changing the way of designing and managing supply chains. In this context, one should take into consideration sustainability factors, such as minimization of carbon emission, treatment of reverse flows, optimization of energy consumption; etc., simultaneously with the product’s life cycle design and management of the supply chains.

In this paper, a reverse supply chain network is investigated for a decision making. This decisio... more In this paper, a reverse supply chain network is investigated for a decision making. This decision is surrounded by complex flows of returned products, due to the increasing quantity, the type of returned products and the variety of recovery option products (reuse, recycling, and refurbishment). The most important problem in the reverse logistic network (RLN) is to orient returned products to the suitable type of recovery option. However, returned products orientations from collect sources to the recovery disposition have not well considered in performance model. In this study, we propose a performance model for designing a network configuration on reverse logistics. Conceptual and analytical models are developed with taking into account operational, economic and environmental factors on designing network.

International Journal of Computer and Information Technology(2279-0764), 2021

This paper proposes the optimization of the fuzzy travel salesman problem by using the α-Cut tech... more This paper proposes the optimization of the fuzzy travel salesman problem by using the α-Cut technique as a ranking function and the Dhouib-Matrix-TSP1 as an approximation method. This method is enhanced by the standard deviation metric and obtains a minimal tour in fuzzy environment where all parameters are octagonal fuzzy numbers. Fuzzy numbers are converted into a crisp number thanks to the ranking function α-Cut. The proposed approach in details is discussed and illustrated by a numerical example. This method helps in designing successfully the tour to a salesman on navigation through the distance matrix so that it minimizes the total fuzzy distance.

La conception constitue une des étapes la plus importante dans le cycle de vie d'un atelier de pr... more La conception constitue une des étapes la plus importante dans le cycle de vie d'un atelier de production. Un des problèmes à soulever est le dimensionnement des ressources. Un sur ou un sous dimensionnement provoquera des sur-coûts supplémentaires. Il conditionnera aussi l'ordonnancement pendant la phase d'exploitation. Nous proposons dans ce papier une approche d'optimisation du dimensionnement d'un atelier de production basé sur les ordonnancements des scénarios de production prévisionnels. Nous nous intéressons à une organisation de flow shop hybride à plusieurs étages. En effet, nous proposons un programme linéaire permettant de minimiser conjointement le C max et le nombre de machines dans chaque étage pour un ensemble de jobs types de l'activité prévisionnelle. Un poids est attribué à chacun des objectifs. Au vu des résultats obtenus, cette approche peut fournir des solutions exactes pour des problèmes de petites tailles. Dans le cas où le poids attribué à chaque objectif est le même nous obtenons des solutions dites de « compromis ». Ces solutions de compromis ont permis de minimiser les coûts totaux.

Academic Journal of Interdisciplinary Studies, Sep 2, 2022

The narcissism of leaders has been studied as a negative trait. It is a personality disorder rela... more The narcissism of leaders has been studied as a negative trait. It is a personality disorder related to the constant aspiration for power, superiority over others, and a lack of empathy with others and their exploitation to achieve personal ends. Narcissists often seek leadership and work for their interests, and these behaviors affect workers' lower levels of performance, creativity, and productivity. This, in turn, leads to higher levels of burnout, job turnover, and other organizational diseases because the traits of leaders and their actual behavior complement each other. Therefore, this research aims to study the relationship between narcissistic leadership with its dimensions (arrogance, authority) and workers' performance (organizational commitment, job satisfaction, creativity, productivity). The research sample was represented in Baghdad College of Economic Sciences University / Iraq, and the research sample amounted to (77) individuals. The research relied on the questionnaire as the main tool to collect data to conduct statistical analyses. As (87) questionnaires were distributed to the employees of the researched college, the number of retrieved questionnaires was (77) valid for analysis. The data was analyzed using (SPSS V.25) and (Amos V.25). Many statistical methods were used to achieve the research objectives, represented by (arithmetic mean, standard deviation, coefficient of variation, Pearson correlation coefficient, and simple linear regression). The most important findings of the research are the adverse effect of narcissistic leadership on workers' performance. The more there is narcissistic leadership in the college understudy, the more it negatively contributes to the performance levels of employees.

IFAC-PapersOnLine, 2019

Abstract Home health care (HHC) companies provide a wide range of medical and social services to ... more Abstract Home health care (HHC) companies provide a wide range of medical and social services to patients in their own homes to help them rehabilitate after illness or injury. Providing high-quality services and reducing operating costs are accessible through proper planning of different sectors of HHC companies. This study presents a mathematical model integrated with real-life constraints to address a home health care routing and scheduling problem (HHCRSP). The planning takes into account temporal precedence and synchronization constraints and limited allowable times for transferring collected biological samples to the laboratory in the pickup and delivery environment. This problem is a new variant of the vehicle routing problem with time windows (VRPTW) with the aim of minimizing the cost related to the transportation and the idle time of caregivers by assigning proper caregivers with required qualifications to patients based on their disjunctive needs. Simulated annealing (SA) and tabu search (TS) are two meta-heuristics applied in two phases for each instance to schedule primary tasks in the first step, and then synchronized services in the next phase. The Solomon’s benchmark is used for generating comparative experiments.

2022 14th International Colloquium of Logistics and Supply Chain Management (LOGISTIQUA), May 25, 2022

In Operation Research, many scientific researchers place great importance on the people's sat... more In Operation Research, many scientific researchers place great importance on the people's satisfactions, needs and the improvement of the living conditions. They shed light on Home (Health)-Care services aspects related to the vehicle routing problems (VRP). Very large number of VRP variants are with many similarities, but differ in structure. In this paper, a new variant of vehicle routing problems with new type of temporal constraints is presented, a new set of instances is generated and the numerical results are obtained with Cplex.

Computers in Industry, Sep 1, 2016

The rail-road π-hub allocation problem for the newly proposed physical internet concept is studie... more The rail-road π-hub allocation problem for the newly proposed physical internet concept is studied.Both static and dynamic scenarios are considered.For static case, heuristic and Simulating Annealing based approaches are proposed.Multi-agent based approach is proposed to deal with dynamic scenarios in case of perturbations.All approaches are evaluated on simulated scenarios. This research concerns an allocation problem in the context of the physical internet aimed at improving rail-road π-hub efficiency by optimizing the distance travelled by each container to the dock, as well as the number of trucks used. To achieve this, heuristic, metaheuristic and Multi-agent-based approaches are proposed. When given the sequence of all the containers in the train, the proposed heuristic approach can assign these containers to outbound doors. Then, the Simulating Annealing (SA) method improves this allocation by minimizing the distance travelled. In addition, a multi-agent system model is proposed to generate reactive solutions which take dynamic aspects into account.The experimental results show that the proposed SA yields an improvement of about 2.42-7.67% in relation to the solution generated by the heuristic; it provides good results within a reasonable time. Conversely, the multi-agent-based approach provides good solutions in case of perturbations or unexpected events.

Academic Journal of Interdisciplinary Studies, Sep 2, 2022

The narcissism of leaders has been studied as a negative trait. It is a personality disorder rela... more The narcissism of leaders has been studied as a negative trait. It is a personality disorder related to the constant aspiration for power, superiority over others, and a lack of empathy with others and their exploitation to achieve personal ends. Narcissists often seek leadership and work for their interests, and these behaviors affect workers' lower levels of performance, creativity, and productivity. This, in turn, leads to higher levels of burnout, job turnover, and other organizational diseases because the traits of leaders and their actual behavior complement each other. Therefore, this research aims to study the relationship between narcissistic leadership with its dimensions (arrogance, authority) and workers' performance (organizational commitment, job satisfaction, creativity, productivity). The research sample was represented in Baghdad College of Economic Sciences University / Iraq, and the research sample amounted to (77) individuals. The research relied on the questionnaire as the main tool to collect data to conduct statistical analyses. As (87) questionnaires were distributed to the employees of the researched college, the number of retrieved questionnaires was (77) valid for analysis. The data was analyzed using (SPSS V.25) and (Amos V.25). Many statistical methods were used to achieve the research objectives, represented by (arithmetic mean, standard deviation, coefficient of variation, Pearson correlation coefficient, and simple linear regression). The most important findings of the research are the adverse effect of narcissistic leadership on workers' performance. The more there is narcissistic leadership in the college understudy, the more it negatively contributes to the performance levels of employees.

International Journal of Logistics Systems and Management

2023 International Conference On Cyber Management And Engineering (CyMaEn)

2022 14th International Colloquium of Logistics and Supply Chain Management (LOGISTIQUA)

2022 14th International Colloquium of Logistics and Supply Chain Management (LOGISTIQUA)

HAL (Le Centre pour la Communication Scientifique Directe), May 28, 2014

2019 International Colloquium on Logistics and Supply Chain Management (LOGISTIQUA)

In designing the mobility of modern cities it has become important to take into account the conce... more In designing the mobility of modern cities it has become important to take into account the concept of flexible transport services. Traditional public transportation has shown its limitations to satisfy the changes in growing cities and particularly unable to adapt to particular events or particular people such as transportation of unable or elderly people that concerns significantly user's transportation. Moreover, the door-to-door transportation is sometimes too expensive. For that, this paper considers the Integrated Dial-A-Ride Problem (IDARP) which is a special case of the Dial-A-Ride Problem (DARP). It deals with the scheduling of vehicles to insure the transportation of the passengers, with the integration of the fixed route service to the DARP. We have proposed a new formulation for the Integrated Dial-A-Ride Problem with timetabled fixed route service (IDARP-TT) with the objective of minimizing the combined operational costs and the waiting time.

2016 IEEE/ACS 13th International Conference of Computer Systems and Applications (AICCSA)

In this paper a new road-rail terminal design called road-rail PI hub is adapted to the usual cha... more In this paper a new road-rail terminal design called road-rail PI hub is adapted to the usual challenges of the intermodal transport which are time and cost. This research aims to find the “best” allocation of containers in a rail-road PI hub where a set of containers must be transferred from railcars to outgoing trucks using the sorters. The main goal is to minimize the used number of trucks. To achieve this, heuristic approach in static and dynamic case is proposed. Then results are compared to the upper bound and the FIFO method. The experimental results show that the proposed heuristic gives better results compared to the solution generated by FIFO;

Supply Chain Forum: An International Journal

Sustainability legislation, new consumer behaviour and the complexity of global trade are increas... more Sustainability legislation, new consumer behaviour and the complexity of global trade are increasingly changing the way of designing and managing supply chains. In this context, one should take into consideration sustainability factors, such as minimization of carbon emission, treatment of reverse flows, optimization of energy consumption; etc., simultaneously with the product’s life cycle design and management of the supply chains.

In this paper, a reverse supply chain network is investigated for a decision making. This decisio... more In this paper, a reverse supply chain network is investigated for a decision making. This decision is surrounded by complex flows of returned products, due to the increasing quantity, the type of returned products and the variety of recovery option products (reuse, recycling, and refurbishment). The most important problem in the reverse logistic network (RLN) is to orient returned products to the suitable type of recovery option. However, returned products orientations from collect sources to the recovery disposition have not well considered in performance model. In this study, we propose a performance model for designing a network configuration on reverse logistics. Conceptual and analytical models are developed with taking into account operational, economic and environmental factors on designing network.

International Journal of Computer and Information Technology(2279-0764), 2021

This paper proposes the optimization of the fuzzy travel salesman problem by using the α-Cut tech... more This paper proposes the optimization of the fuzzy travel salesman problem by using the α-Cut technique as a ranking function and the Dhouib-Matrix-TSP1 as an approximation method. This method is enhanced by the standard deviation metric and obtains a minimal tour in fuzzy environment where all parameters are octagonal fuzzy numbers. Fuzzy numbers are converted into a crisp number thanks to the ranking function α-Cut. The proposed approach in details is discussed and illustrated by a numerical example. This method helps in designing successfully the tour to a salesman on navigation through the distance matrix so that it minimizes the total fuzzy distance.