Pub Date : 2022-06-28DOI: 10.22453/lsj-023.1.048-060
Ghenam Abada, M. Tehami, Abdelrahmane Bekkadour Benyamina
This paper presents a 3D non-linear numerical model, developed to predict the mechanical behaviour of simply supported steel-concrete composite beams under three-point bending stress. Using on Abaqus software a 3D model is created, which takes into account all the elements of the steel-concrete composite beam. The concrete slab, steel beam, and studs are modeled using solid elements, reinforcing bars are neglected. The geometrical and mechanical characteristics are based on beams tested in previous studies. The non-linear behaviour of steel-concrete materials is considered and the interaction between the different surfaces is taken into account. The deflection and slip results at the interface of slab and steel sections showed good agreement with experimental and analytical results. The maximum load value is close to that obtained by a plastic analysis of the composite section according to the Eurocode (1994) rules, with a relative deviation of 10%. Furthermore, the behaviour of increasing the reinforcing plate thickness on the composite beam gives an increase in maximum load and a decrease in the slip at the steel-concrete interface.
{"title":"3D non-linear numerical model, developed to predict the mechanical behaviour of simply supported steel-concrete composite beams under three-point bending stress","authors":"Ghenam Abada, M. Tehami, Abdelrahmane Bekkadour Benyamina","doi":"10.22453/lsj-023.1.048-060","DOIUrl":"https://doi.org/10.22453/lsj-023.1.048-060","url":null,"abstract":"This paper presents a 3D non-linear numerical model, developed to predict the mechanical behaviour of simply supported steel-concrete composite beams under three-point bending stress. Using on Abaqus software a 3D model is created, which takes into account all the elements of the steel-concrete composite beam. The concrete slab, steel beam, and studs are modeled using solid elements, reinforcing bars are neglected. The geometrical and mechanical characteristics are based on beams tested in previous studies. The non-linear behaviour of steel-concrete materials is considered and the interaction between the different surfaces is taken into account. The deflection and slip results at the interface of slab and steel sections showed good agreement with experimental and analytical results. The maximum load value is close to that obtained by a plastic analysis of the composite section according to the Eurocode (1994) rules, with a relative deviation of 10%. Furthermore, the behaviour of increasing the reinforcing plate thickness on the composite beam gives an increase in maximum load and a decrease in the slip at the steel-concrete interface.","PeriodicalId":31081,"journal":{"name":"Lebanese Science Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47581523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cloud pricing models are essential in the context of the increasing availability of cloud service providers across the Internet and the willingness of users to use high-quality and affordable services. The double-sided combinatorial auction model has been used extensively due to its inherent characteristics. This paper presents a cost-effective pricing method that considers both the forward market and spot market. Moreover, resource requests are workflow or hybrid to support scalability and improve the number of federal cloud response requests. The evaluation results indicate more profit for both buyers and vendors simultaneously. Furthermore, the proposed algorithm reduces the waiting time and the number of pending demands, increasing users' satisfaction relative to cloud services.
{"title":"An improved pricing approach based on combinatorial auction method in cloud environment","authors":"Seyyed-Mohammad Javadi-Moghaddam, Hamid Mohammadi Fard","doi":"10.22453/lsj-023.1.061-077","DOIUrl":"https://doi.org/10.22453/lsj-023.1.061-077","url":null,"abstract":"Cloud pricing models are essential in the context of the increasing availability of cloud service providers across the Internet and the willingness of users to use high-quality and affordable services. The double-sided combinatorial auction model has been used extensively due to its inherent characteristics. This paper presents a cost-effective pricing method that considers both the forward market and spot market. Moreover, resource requests are workflow or hybrid to support scalability and improve the number of federal cloud response requests. The evaluation results indicate more profit for both buyers and vendors simultaneously. Furthermore, the proposed algorithm reduces the waiting time and the number of pending demands, increasing users' satisfaction relative to cloud services.","PeriodicalId":31081,"journal":{"name":"Lebanese Science Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45474595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-02DOI: 10.22453/lsj-022.2.185-208
Talal Mohamad Darwish, M. Hamzé, B. Nsouli
Soil contamination by trace elements (TE) causes health and environmental risks. This work focused on arable lands of Central Bekaa of Lebanon, East Mediterranean. The spatial distribution of TEs in the cultivated soils was mapped. Results showed accumulation of Cr and Ni, in the soil-plant interface layer, exceeding the multifunctional land use (soil threshold I <50 and <40 mg kg-1 , respectively) and controlled land use (soil threshold II-100 mg kg-1 ). The index of geoaccumulation (Igeo) showed no hazards from Zn with moderate to strong contamination from Pb and moderate hazard from Ni, Cu, Cd and Cr. A cross sectional soil sampling from the Litani river to the eastern hill of Terbol showed accumulation of TEs at foot slopes and at river’s banks. Human activities within the plain contribute to further soil contamination with risk of pollutants transfer to food chain. Additional sampling of plant and corresponding soil in hot spots showed TE content in the plant leaves to be mostly within or slightly above the permissible values in wheat and potato. Considering the soil quality regarding chemical pollution is a necessary factor in land use planning for the elaboration of adapted to local soil conditions thresholds of TEs content in the soil for suitable land use, either in agriculture or alternative uses.
{"title":"Ecological risks from trace elements in Quaternary agricultural soils of Lebanon- East Mediterranean.","authors":"Talal Mohamad Darwish, M. Hamzé, B. Nsouli","doi":"10.22453/lsj-022.2.185-208","DOIUrl":"https://doi.org/10.22453/lsj-022.2.185-208","url":null,"abstract":"Soil contamination by trace elements (TE) causes health and environmental risks. This work focused on arable lands of Central Bekaa of Lebanon, East Mediterranean. The spatial distribution of TEs in the cultivated soils was mapped. Results showed accumulation of Cr and Ni, in the soil-plant interface layer, exceeding the multifunctional land use (soil threshold I <50 and <40 mg kg-1 , respectively) and controlled land use (soil threshold II-100 mg kg-1 ). The index of geoaccumulation (Igeo) showed no hazards from Zn with moderate to strong contamination from Pb and moderate hazard from Ni, Cu, Cd and Cr. A cross sectional soil sampling from the Litani river to the eastern hill of Terbol showed accumulation of TEs at foot slopes and at river’s banks. Human activities within the plain contribute to further soil contamination with risk of pollutants transfer to food chain. Additional sampling of plant and corresponding soil in hot spots showed TE content in the plant leaves to be mostly within or slightly above the permissible values in wheat and potato. Considering the soil quality regarding chemical pollution is a necessary factor in land use planning for the elaboration of adapted to local soil conditions thresholds of TEs content in the soil for suitable land use, either in agriculture or alternative uses.","PeriodicalId":31081,"journal":{"name":"Lebanese Science Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44629647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-02DOI: 10.22453/lsj-022.2.148-164
Ayyoub Bouazzaoui, Rachid Tarik Bouhraoua, Mohammed Ghefar
The cork oak (Quercus suber L.) is a fire-adapted species due to the protection of dormant buds located under its cork bark. Post-fire resprouting in trees from these buds is an efficient means of plant adaptation. In this study, we examined the different types of the response of 644 trees, one year after a wildfire occurred in summer 2012 in the Tlemcen area. Furthermore, we determined the variables influencing the vitality likelihood of trees using multiple logistic regression. The dominant response is crown resprouting (67.7%), followed by tree death (23.9%) and basal resprouting (8.4%). The probability of tree vitality decreased with increasing fire intensity which associated with the importance of trunk injuries, decreasing bark thickness and tree height. This model is an interesting tool for diagnosing tree mortality or survival to assess the ecological and economic restoration actions for the forest.
{"title":"Factors affecting post-fire, vitality and recovery of cork oak trees in Yifri forest (NorthWest of Algeria).","authors":"Ayyoub Bouazzaoui, Rachid Tarik Bouhraoua, Mohammed Ghefar","doi":"10.22453/lsj-022.2.148-164","DOIUrl":"https://doi.org/10.22453/lsj-022.2.148-164","url":null,"abstract":"The cork oak (Quercus suber L.) is a fire-adapted species due to the protection of dormant buds located under its cork bark. Post-fire resprouting in trees from these buds is an efficient means of plant adaptation. In this study, we examined the different types of the response of 644 trees, one year after a wildfire occurred in summer 2012 in the Tlemcen area. Furthermore, we determined the variables influencing the vitality likelihood of trees using multiple logistic regression. The dominant response is crown resprouting (67.7%), followed by tree death (23.9%) and basal resprouting (8.4%). The probability of tree vitality decreased with increasing fire intensity which associated with the importance of trunk injuries, decreasing bark thickness and tree height. This model is an interesting tool for diagnosing tree mortality or survival to assess the ecological and economic restoration actions for the forest.","PeriodicalId":31081,"journal":{"name":"Lebanese Science Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42289378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-02DOI: 10.22453/lsj-022.2.165-184
Smain Echcherki, Mohamed Amine Feddal, R. Labad
The objective of our study is to compare the effect of agricultural soil preparation on the physicomechanical properties of the soil and the consequences on the root system of wheat. To achieve these goals, three technical tillage chains (chain 1: deep tillage, chain 2: agronomic tillage, chain 3: no-tillage), were compared in the same pedoclimatic and historical situations. The experiment was carried out on silty clay soil in the experimental station of the National Higher School of Agronomy (Algiers). The results show that the techniques affect soil’s proprieties and the root system differently. The agronomic tillage has the best favorable effect on soil humidity, Bulk density, and soil Penetration resistance (11,1%; 50%; 0.6 MPa) (p-value :0,0001). Concerning the roots, the density, the diameter, and length were better when the soil is deeply tilled, non-tilled, or agronomical tilled, respectively (CH1:3.37 g/dm³; CH3:1.38 mm; CH2:12.23 cm). Examining all the results of this study has shown how tillage is reflected in and contributes to the farmer's orientation towards the right choice to optimize and conserve soil and water at the same time. Thus, under this study's experimental conditions, the technical itinerary of tillage with agronomic ploughing seems to be an alternative to conventional ploughing. This method of tillage is easily feasible from a technical point of view. Besides, it can generate economic gains compared to ploughing. However, its impacts on the soil and crop yields need to be studied in the longer term.
{"title":"The effects of various tillage systems on soil structure and root system development in wheat (Triticum durum Desf.).","authors":"Smain Echcherki, Mohamed Amine Feddal, R. Labad","doi":"10.22453/lsj-022.2.165-184","DOIUrl":"https://doi.org/10.22453/lsj-022.2.165-184","url":null,"abstract":"The objective of our study is to compare the effect of agricultural soil preparation on the physicomechanical properties of the soil and the consequences on the root system of wheat. To achieve these goals, three technical tillage chains (chain 1: deep tillage, chain 2: agronomic tillage, chain 3: no-tillage), were compared in the same pedoclimatic and historical situations. The experiment was carried out on silty clay soil in the experimental station of the National Higher School of Agronomy (Algiers). The results show that the techniques affect soil’s proprieties and the root system differently. The agronomic tillage has the best favorable effect on soil humidity, Bulk density, and soil Penetration resistance (11,1%; 50%; 0.6 MPa) (p-value :0,0001). Concerning the roots, the density, the diameter, and length were better when the soil is deeply tilled, non-tilled, or agronomical tilled, respectively (CH1:3.37 g/dm³; CH3:1.38 mm; CH2:12.23 cm). Examining all the results of this study has shown how tillage is reflected in and contributes to the farmer's orientation towards the right choice to optimize and conserve soil and water at the same time. Thus, under this study's experimental conditions, the technical itinerary of tillage with agronomic ploughing seems to be an alternative to conventional ploughing. This method of tillage is easily feasible from a technical point of view. Besides, it can generate economic gains compared to ploughing. However, its impacts on the soil and crop yields need to be studied in the longer term.","PeriodicalId":31081,"journal":{"name":"Lebanese Science Journal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41830338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-02DOI: 10.22453/lsj-022.2.209-231
Abdel-Razzak Merheb, H. Noura, F. Bateman
In this paper, the mathematical modeling of a new bio-inspired evolutionary search algorithm called Ecological Systems Algorithm (ESA) is presented. ESA imitates ecological rules to find iteratively the optimum of a given function through interaction between predator and prey search species. ESA is then compared to the well-known Genetic Algorithm which is a powerful bio-inspired stochastic search/optimization algorithm used for decades. Simulation results of the two algorithms optimizing ten different benchmark functions are used to investigate and compare both algorithms based on their speed, performance, reliability, and efficiency.
{"title":"Mathematical Modeling of Ecological Systems Algorithm.","authors":"Abdel-Razzak Merheb, H. Noura, F. Bateman","doi":"10.22453/lsj-022.2.209-231","DOIUrl":"https://doi.org/10.22453/lsj-022.2.209-231","url":null,"abstract":"In this paper, the mathematical modeling of a new bio-inspired evolutionary search algorithm called Ecological Systems Algorithm (ESA) is presented. ESA imitates ecological rules to find iteratively the optimum of a given function through interaction between predator and prey search species. ESA is then compared to the well-known Genetic Algorithm which is a powerful bio-inspired stochastic search/optimization algorithm used for decades. Simulation results of the two algorithms optimizing ten different benchmark functions are used to investigate and compare both algorithms based on their speed, performance, reliability, and efficiency.","PeriodicalId":31081,"journal":{"name":"Lebanese Science Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45569688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-02DOI: 10.22453/lsj-022.2.232-241
J. Assaf, Regina Geitani, D. Karam Sarkis, R. Maroun, N. Louka
This work aims to develop and simulate a novel process based on sterilizing natural air by heating at high temperatures followed by rapid cooling. The new sustainable process is called “Air Rapid Heating Rapid Cooling Sterilization” (ARHRCS). Thus, it can be used in Heating, Ventilation, and Air Conditioning (HVAC) systems in hospitals to produce safe air, free of pathogenic airborne microbes including bacteria and viruses such as tuberculosis (TB) and coronavirus (SARS-CoV-2). A crown fixed on the head of the medical staff may be connected to the HVAC system to produce a constant flow of clean laminar air. Hence, this crown is capable of keeping airborne microorganisms at a safe distance from Health Care Workers (HCWs), avoiding any potential microbial infection. Accordingly, HCWs will be able to work in more suitable and safe conditions, especially in high infection risk areas. Depending on its need, the newly developed process may be implemented in different other locations such as laboratories, malls, planes, buildings, and other crowded spaces. Further applications of this method may arise including its usage in the sterilization of recirculated air in biosafety cabinets and the development of a portable air sterilizing unit.
{"title":"Novel air sterilization process for clean air production and microbial spread limitation using protection devices.","authors":"J. Assaf, Regina Geitani, D. Karam Sarkis, R. Maroun, N. Louka","doi":"10.22453/lsj-022.2.232-241","DOIUrl":"https://doi.org/10.22453/lsj-022.2.232-241","url":null,"abstract":"This work aims to develop and simulate a novel process based on sterilizing natural air by heating at high temperatures followed by rapid cooling. The new sustainable process is called “Air Rapid Heating Rapid Cooling Sterilization” (ARHRCS). Thus, it can be used in Heating, Ventilation, and Air Conditioning (HVAC) systems in hospitals to produce safe air, free of pathogenic airborne microbes including bacteria and viruses such as tuberculosis (TB) and coronavirus (SARS-CoV-2). A crown fixed on the head of the medical staff may be connected to the HVAC system to produce a constant flow of clean laminar air. Hence, this crown is capable of keeping airborne microorganisms at a safe distance from Health Care Workers (HCWs), avoiding any potential microbial infection. Accordingly, HCWs will be able to work in more suitable and safe conditions, especially in high infection risk areas. Depending on its need, the newly developed process may be implemented in different other locations such as laboratories, malls, planes, buildings, and other crowded spaces. Further applications of this method may arise including its usage in the sterilization of recirculated air in biosafety cabinets and the development of a portable air sterilizing unit.","PeriodicalId":31081,"journal":{"name":"Lebanese Science Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47220276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-02DOI: 10.22453/lsj-022.2.242-262
Carla Joseph Abi Hanna
This paper provides an overview of the curricula in translation programs at the undergraduate level in Lebanon and the need to update these curricula in alignment with the continuously evolving market. Globalization is very common in both the translation market and the educational sector, especially with the COVID-19 pandemic, which has imposed the need to update these curricula and investigate to which extent the courses offered in some Lebanese universities equip students with what is needed in the changing translation ecosystem, taking into account the new competence-based training trends in the translation market. Surveys and interviews were conducted with students, teachers, and owners of translation companies to shed light on the obstacles novice translators face when they first embark on their professional journey. What does the market expect from novice translators? What is missing in translation curricula? And to what extent does this curriculum answer the needs of the translation changing market? It is found that there is a need for some Lebanese universities to reconsider their curricula, mainly focusing on technology and aligning curriculum content with market needs
{"title":"Novice Translators’ Troubles and the Need for Innovative Translation Curricula: Lebanese Context.","authors":"Carla Joseph Abi Hanna","doi":"10.22453/lsj-022.2.242-262","DOIUrl":"https://doi.org/10.22453/lsj-022.2.242-262","url":null,"abstract":"This paper provides an overview of the curricula in translation programs at the undergraduate level in Lebanon and the need to update these curricula in alignment with the continuously evolving market. Globalization is very common in both the translation market and the educational sector, especially with the COVID-19 pandemic, which has imposed the need to update these curricula and investigate to which extent the courses offered in some Lebanese universities equip students with what is needed in the changing translation ecosystem, taking into account the new competence-based training trends in the translation market. Surveys and interviews were conducted with students, teachers, and owners of translation companies to shed light on the obstacles novice translators face when they first embark on their professional journey. What does the market expect from novice translators? What is missing in translation curricula? And to what extent does this curriculum answer the needs of the translation changing market? It is found that there is a need for some Lebanese universities to reconsider their curricula, mainly focusing on technology and aligning curriculum content with market needs","PeriodicalId":31081,"journal":{"name":"Lebanese Science Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42382343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-02DOI: 10.22453/lsj-022.2.263-291
Haifa Bou Khzam, Jean Francois Lemoine
Mobile commerce is a worldwide innovation. However, in Lebanon, several factors are hindering its development. Therefore, our objective is to find the factors influencing the consumer’s attitude toward the use of mobile commerce and to create a research model reflecting our findings. This research revises the basic theories of technology adoption and studies conducted in m-commerce, e-commerce, and related fields. An exploratory study of deep interviews with 14 consumers and experts was held, and a content analysis by themes was performed to show the consistent variables for our conceptual framework. New derived variables, the situational factor and digital culture tend to moderate the relations between independent and dependent variables. Service availability, self-efficacy and social-influence significantly influence the consumer’s attitude toward the use of m-commerce, while cost is negatively affected. This study has both theoretical and managerial implications, it presents a new research model compared to prior studies in online service technologies, especially in mobile commerce. In addition, results provide online businesses with many trusted recommendations for their strategic plans based on analyzed and accurate data.
{"title":"Factors affecting the attitude toward mobile commerce usage among Lebanese consumers: A conceptual Framework.","authors":"Haifa Bou Khzam, Jean Francois Lemoine","doi":"10.22453/lsj-022.2.263-291","DOIUrl":"https://doi.org/10.22453/lsj-022.2.263-291","url":null,"abstract":"Mobile commerce is a worldwide innovation. However, in Lebanon, several factors are hindering its development. Therefore, our objective is to find the factors influencing the consumer’s attitude toward the use of mobile commerce and to create a research model reflecting our findings. This research revises the basic theories of technology adoption and studies conducted in m-commerce, e-commerce, and related fields. An exploratory study of deep interviews with 14 consumers and experts was held, and a content analysis by themes was performed to show the consistent variables for our conceptual framework. New derived variables, the situational factor and digital culture tend to moderate the relations between independent and dependent variables. Service availability, self-efficacy and social-influence significantly influence the consumer’s attitude toward the use of m-commerce, while cost is negatively affected. This study has both theoretical and managerial implications, it presents a new research model compared to prior studies in online service technologies, especially in mobile commerce. In addition, results provide online businesses with many trusted recommendations for their strategic plans based on analyzed and accurate data.","PeriodicalId":31081,"journal":{"name":"Lebanese Science Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42038375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-02-13DOI: 10.22453/lsj-021.2.233-251
Lana Kazkaz
Social media brings to the fore new opinion leaders. Due to their supposed role in public debate as well as persuasion and promotion of opinions and new behaviours among users of such networks, they are called Influences. In the last few decades, communication research has explored opinion leaders as effective influences on their environments and societies. They present and interpret information, give opinions and adopt innovation before the audience, in addition to mediating between the audience and media in the communication process. More particularly, Facebook represents a new space for discussion in the Arab World. The phenomenon spread during the Arab Spring in 2011 and even expanded later. It took different forms, like the transfer of information, interpretation of incidents, and mobilization for mass events, political and cultural polarization and new critical discourse. However, what is taking place in cyberspace is still debatable. The present study looks into the new opinion leaders’ phenomenon in the Arab public sphere and their part in political and religious polarization. The discourse of posts on three Facebook accounts of new opinion leaders (Influences) in Jordan is analysed. As these figures play disparate roles in national political and cultural events and dilemmas, lessons can be derived from such a rising phenomenon. The study aims at exploring the discourse features of the posts addressing public issues which sparked widespread controversies in the period 2017-2018, such as the civil state, theocratic state, school curriculum reform and political reform in Jordan. Study has found that the new opinion leaders’ phenomenon on social media in Jordan is on the rise, in terms of political and religious polarization. That would reveal some characteristics and roles of new opinion leaders, in addition to the features of their discourse with reference to major political and religious issues and values as well as political and religious polarization.
{"title":"Role of New Opinion Leaders on Social Media in Political and Religious Polarization (Jordanian case study).","authors":"Lana Kazkaz","doi":"10.22453/lsj-021.2.233-251","DOIUrl":"https://doi.org/10.22453/lsj-021.2.233-251","url":null,"abstract":"Social media brings to the fore new opinion leaders. Due to their supposed role in public debate as well as persuasion and promotion of opinions and new behaviours among users of such networks, they are called Influences. In the last few decades, communication research has explored opinion leaders as effective influences on their environments and societies. They present and interpret information, give opinions and adopt innovation before the audience, in addition to mediating between the audience and media in the communication process. More particularly, Facebook represents a new space for discussion in the Arab World. The phenomenon spread during the Arab Spring in 2011 and even expanded later. It took different forms, like the transfer of information, interpretation of incidents, and mobilization for mass events, political and cultural polarization and new critical discourse. However, what is taking place in cyberspace is still debatable. The present study looks into the new opinion leaders’ phenomenon in the Arab public sphere and their part in political and religious polarization. The discourse of posts on three Facebook accounts of new opinion leaders (Influences) in Jordan is analysed. As these figures play disparate roles in national political and cultural events and dilemmas, lessons can be derived from such a rising phenomenon. The study aims at exploring the discourse features of the posts addressing public issues which sparked widespread controversies in the period 2017-2018, such as the civil state, theocratic state, school curriculum reform and political reform in Jordan. Study has found that the new opinion leaders’ phenomenon on social media in Jordan is on the rise, in terms of political and religious polarization. That would reveal some characteristics and roles of new opinion leaders, in addition to the features of their discourse with reference to major political and religious issues and values as well as political and religious polarization.","PeriodicalId":31081,"journal":{"name":"Lebanese Science Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46809038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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