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Urban growth strategies are incorporated for land-use planning and transportation to facilitate people's movement towards a mass transit system. This requires transport demand analysis of a particular area so that, if possible, urban re-planning can be done to support long-term sustainable use of the transportation system. The paper focuses on the study of transportation demand analysis in some stations of the recently opened metro system in Qatar. The study uses hypothetical scenarios of land use density to analyze transportation demand. A regression model is used to assess the relationship between the generated transport demand from each type of land use, which shows that the land-use type can substantially impact the ridership of a mass transit system. Based on the analysis conducted in this paper, it can be concluded that if ridership in a particular area is to be increased, its development for mixed land use might be a good option. The proposed mixed-use planning and the insights developed in the paper are expected to help urban planners in different countries with similar urban growth and development situations.
Aya AlKhereibi; Maryam AlSuwaidi; Reem Al-Mohammed; Shaligram Pokharel; Mohamed Ayari. An integrated urban-transport smart growth model around metro stations: A case of Qatar. Transportation Research Interdisciplinary Perspectives 2021, 10, 100392 .
AMA StyleAya AlKhereibi, Maryam AlSuwaidi, Reem Al-Mohammed, Shaligram Pokharel, Mohamed Ayari. An integrated urban-transport smart growth model around metro stations: A case of Qatar. Transportation Research Interdisciplinary Perspectives. 2021; 10 ():100392.
Chicago/Turabian StyleAya AlKhereibi; Maryam AlSuwaidi; Reem Al-Mohammed; Shaligram Pokharel; Mohamed Ayari. 2021. "An integrated urban-transport smart growth model around metro stations: A case of Qatar." Transportation Research Interdisciplinary Perspectives 10, no. : 100392.
Strategic projects are large scale, complex, and require significant investments and resources. These projects aim at gaining long-term social and economic benefits. Therefore, organizations focusing on strategic projects should use a consistent approach that suits their strategy, capability, and long-term expectations. Based on the four research questions and content analysis of the literature, generic processes used for the strategic project selection in tandem with the managerial capabilities are identified in this paper. The generic processes and managerial capabilities are used to develop a generic framework for strategic project selection. The framework is used for literature analysis in the paper. The review shows that both qualitative and quantitative methods are used for strategic project selection. Some possible research directions have also been proposed at the end of the review. The paper provides value to both researchers and practitioners in terms of tools available and a guidance on project selection through a structured process framework.
Khalifa Mohammed Al-Sobai; Shaligram Pokharel; Galal M. Abdella. Perspectives on the Capabilities for the Selection of Strategic Projects. Sustainability 2020, 12, 8191 .
AMA StyleKhalifa Mohammed Al-Sobai, Shaligram Pokharel, Galal M. Abdella. Perspectives on the Capabilities for the Selection of Strategic Projects. Sustainability. 2020; 12 (19):8191.
Chicago/Turabian StyleKhalifa Mohammed Al-Sobai; Shaligram Pokharel; Galal M. Abdella. 2020. "Perspectives on the Capabilities for the Selection of Strategic Projects." Sustainability 12, no. 19: 8191.
In this paper, we address the assignment problem of skills to servers (e.g., repairmen) in a multi-server repair shop of a spare parts supply system. This type of assignment problems tends to be hard in general, due to the lack of analytical queuing models with skill-based item-server assignments. In this paper, we propose a joint skill-server assignment and inventory optimization heuristic based on “pooled” repair shop designs. The heuristic decomposes the repair shop problem into sub-systems based on some attributes of repairable items. Each subsystem is responsible for its group of repairable items with full cross-training of the subsystem servers. The pooled designs reduce the complexity of the problem and enable the use of queue-theoretical approximations to optimize the inventory and repair shop capacity. The conducted numerical experiments show that the pooled skill-server assignments optimized by the proposed heuristic can reduce the total costs by 4% when compared to the skill-server assignments obtained by Genetic Algorithm and Simulated Annealing based methods. Furthermore, in terms of cost and computation speed, the proposed heuristic shows better results than a Simulation-Optimization based skill-server assignment heuristic, which considers all possible assignments.
Hasan Hüseyin Turan; Andrei Sleptchenko; Shaligram Pokharel; Tarek Y ElMekkawy. A sorting based efficient heuristic for pooled repair shop designs. Computers & Operations Research 2020, 117, 104887 .
AMA StyleHasan Hüseyin Turan, Andrei Sleptchenko, Shaligram Pokharel, Tarek Y ElMekkawy. A sorting based efficient heuristic for pooled repair shop designs. Computers & Operations Research. 2020; 117 ():104887.
Chicago/Turabian StyleHasan Hüseyin Turan; Andrei Sleptchenko; Shaligram Pokharel; Tarek Y ElMekkawy. 2020. "A sorting based efficient heuristic for pooled repair shop designs." Computers & Operations Research 117, no. : 104887.
Zhitao Xu; Adel Elomri; Shaligram Pokharel; Fatih Mutlu. A model for capacitated green vehicle routing problem with the time-varying vehicle speed and soft time windows. Computers & Industrial Engineering 2019, 137, 1 .
AMA StyleZhitao Xu, Adel Elomri, Shaligram Pokharel, Fatih Mutlu. A model for capacitated green vehicle routing problem with the time-varying vehicle speed and soft time windows. Computers & Industrial Engineering. 2019; 137 ():1.
Chicago/Turabian StyleZhitao Xu; Adel Elomri; Shaligram Pokharel; Fatih Mutlu. 2019. "A model for capacitated green vehicle routing problem with the time-varying vehicle speed and soft time windows." Computers & Industrial Engineering 137, no. : 1.
Purpose The purpose of this paper is to investigate and report students’ perception of service quality in a university by examining the perceptual context of service quality with respect to students’ loyalty behavior, image of the university and culture/values. Design/methodology/approach A research framework is developed for quality assessment with three hypotheses. A questionnaire with 65 instruments was used for gathering the required data for the analysis. The questionnaire was sent through email to all engineering students. The analysis included descriptive statistics, reliability analysis, gap analysis and hypotheses tests. Seven dimensions of service quality were identified: the original dimensions of the SERVQUAL, namely, reliability, responsiveness, assurance, empathy and tangibles. Two additional dimensions image and culture/value were added for the research to understand perceived service quality and loyalty. Findings The results provide a significant positive correlation between service quality and student's loyalty. It also shows that there is statistically significant relation between the image of the institution and the perceived service quality, and culture/values of the students in the institution and perceived service quality. Research limitations/implications This study used data collected from a survey in the university in a given period. Practical implications The findings indicate that to provide quality education, meeting students’ needs, wants and expectations of services quality should be carefully understood and addressed. Management also needs to consider factors such as corporate image and culture/value, as they have the ability to heavily impact the type of services provided by the institution. Originality/value The findings presented in this paper fill the gap in the current literature by providing empirical knowledge on the quality of service assessment and customer satisfaction in the higher education context. The study is the first of its kind in Qatar’s context and provides opportunities for higher institutions to focus more on current students’ services. This can lead to an increased brand value representing one of the premier institutes of higher education in the Middle East Gulf Region.
Amal S.A. Shurair; Shaligram Pokharel. Stakeholder’s perception of service quality: a case in Qatar. Quality Assurance in Education 2019, 27, 493 -510.
AMA StyleAmal S.A. Shurair, Shaligram Pokharel. Stakeholder’s perception of service quality: a case in Qatar. Quality Assurance in Education. 2019; 27 (4):493-510.
Chicago/Turabian StyleAmal S.A. Shurair; Shaligram Pokharel. 2019. "Stakeholder’s perception of service quality: a case in Qatar." Quality Assurance in Education 27, no. 4: 493-510.
Carbon footprinting of products and services is getting increasing attention due to the growing emphasis on carbon related policies in many countries. As a result, many enterprises are focusing on the design of green supply chains (GSCs) with research on supply chains (SCs) focused not only on cost efficiency, but also on its environmental consequences. The review presented in this paper focuses on the implications of carbon policies on SCs. The concept of content analysis is used to retrieve and analyze the information regarding drivers (carbon policies), actors (for example, manufacturers and retailers), methodologies (mathematical modeling techniques), decision-making contexts (such as, facility location and order quantity), and emission reduction opportunities. The review shows a lack of emissions analysis of SCs that face carbon policies in different countries. The research also focuses on the design of carbon policies for emissions reduction in different operating situations. Some possible research directions are also discussed at the end of this review.
Zhitao Xu; Adel Elomri; Shaligram Pokharel; Fatih Mutlu. The Design of Green Supply Chains under Carbon Policies: A Literature Review of Quantitative Models. Sustainability 2019, 11, 3094 .
AMA StyleZhitao Xu, Adel Elomri, Shaligram Pokharel, Fatih Mutlu. The Design of Green Supply Chains under Carbon Policies: A Literature Review of Quantitative Models. Sustainability. 2019; 11 (11):3094.
Chicago/Turabian StyleZhitao Xu; Adel Elomri; Shaligram Pokharel; Fatih Mutlu. 2019. "The Design of Green Supply Chains under Carbon Policies: A Literature Review of Quantitative Models." Sustainability 11, no. 11: 3094.
Emergency response operations are very important activities in the industrial areas. As an incident in an industrial area can have considerable economic and social impact, response to such an incident has to be provided in a very short time. Decisions for such responses should consider the available emergency resources, and other factors such as humidity, wind speed, wind direction, population, chemicals, and materials handling, and the characteristics of surrounding affected industrial facilities. In this paper, an index-based emergency response management system (IERMS) is proposed by integrating the location hazard index (LHI) and the response time optimization model. The LHI prioritizes the hazard potential of a location. The response time optimization model provides minimum response time and resource allocations in response to an emergency situation. The use of the framework is illustrated in an industrial city case study by considering petrochemical fire as a demonstration example. The results obtained from the analysis show that the framework is applicable to design the response to incident conditions. It is expected that the framework would help in better resource allocation and efficient response to incidents in industrial areas.
Yousuf Rebeeh; Shaligram Pokharel; Galal M. Abdella; Abdelmagid Hammuda. A framework based on location hazard index for optimizing operational performance of emergency response strategies: The case of petrochemical industrial cities. Safety Science 2019, 117, 33 -42.
AMA StyleYousuf Rebeeh, Shaligram Pokharel, Galal M. Abdella, Abdelmagid Hammuda. A framework based on location hazard index for optimizing operational performance of emergency response strategies: The case of petrochemical industrial cities. Safety Science. 2019; 117 ():33-42.
Chicago/Turabian StyleYousuf Rebeeh; Shaligram Pokharel; Galal M. Abdella; Abdelmagid Hammuda. 2019. "A framework based on location hazard index for optimizing operational performance of emergency response strategies: The case of petrochemical industrial cities." Safety Science 117, no. : 33-42.
An effective spare part supply system planning is essential to achieve a high capital asset availability. We investigate the design problem of a repair shop in a single echelon repairable multi-item spare parts supply system. The repair shop usually consists of several servers with different skill sets. Once a failure occurs in the system, the failed part is queued to be served by a suitable server that has the required skill. We model the repair shop as a collection of independent sub-systems, where each sub-system is responsible for repairing certain types of failed parts. The procedure of partitioning a repair shop into sub-systems is known as pooling, and the repair shop formed by the union of independent sub-systems is called a pooled repair shop. Identifying the best partition is a challenging combinatorial optimization problem. In this direction, we formulate the problem as a stochastic nonlinear integer programming model and propose a sequential solution heuristic to find the best-pooled design by considering inventory allocation and capacity level designation of the repair shop. We conduct numerical experiments to quantify the value of the pooled repair shop designs. Our analysis shows that pooled designs can yield cost reductions by 25% to 45% compared to full flexible and dedicated designs. The proposed heuristic also achieves a lower average total system cost than that generated by a Genetic Algorithm (GA)-based solution algorithm.
Hasan Hüseyin Turan; Shaligram Pokharel; Tarek Y. ElMekkawy; Andrei Sleptchenko; Maryam Al-Khatib. An Efficient Heuristic for Pooled Repair Shop Designs. Communications in Computer and Information Science 2019, 102 -118.
AMA StyleHasan Hüseyin Turan, Shaligram Pokharel, Tarek Y. ElMekkawy, Andrei Sleptchenko, Maryam Al-Khatib. An Efficient Heuristic for Pooled Repair Shop Designs. Communications in Computer and Information Science. 2019; ():102-118.
Chicago/Turabian StyleHasan Hüseyin Turan; Shaligram Pokharel; Tarek Y. ElMekkawy; Andrei Sleptchenko; Maryam Al-Khatib. 2019. "An Efficient Heuristic for Pooled Repair Shop Designs." Communications in Computer and Information Science , no. : 102-118.
Purpose: In most countries, development, growth, and sustenance of industrial facilities are given utmost importance due to the influence in the socio-economic development of the country. Therefore, special economic zones, or industrial areas or industrial cities are developed in order to provide the required services for the sustained operation of such facilities. Such facilities not only provide prolonged economic support to the country but it also helps in the societal aspects as well by providing livelihood to thousands of people. Therefore, any disaster in any of the facilities in the industrial area will have a significant impact on the population, facilities, the economy, and threatens the sustainability of the operations. This paper provides review of such literature that focus on theory and practice of disaster management in industrial cities.Design/methodology/approach: In the paper, content analysis method in order to elicit the insights of the literature available.Findings: It is found that the research is done in all phases of disaster management, namely, preventive phase, reactive phase and corrective phase. The research in each of these areas are focused on four main aspects, which are facilities, resources, support systems and modeling. Nevertheless, the research in the industrial cities is insignificant. Moreover, the modeling part does not explicitly consider the nature of industrial cities, where many of the chemical and chemical processing can be highly flammable thus creating a very large disaster impact. Some research is focused at an individual plant and scaled up to the industrial cities. The modeling part is weak in terms of comprehensively analyzing and assisting disaster management in the industrial cities.Originality/value: The comprehensive review using content analysis on disaster management is presented here. The review helps the researchers to understand the gap in the literature in order to extend further research for disaster management in large scale industrial cities.
Yousif A. M. A. Rebeeh; Shaligram Pokharel; Galal M.M. Abdella; Abdelmagid S. Hammuda. Disaster management in industrial areas: Perspectives, challenges and future research. Journal of Industrial Engineering and Management 2019, 12, 133 .
AMA StyleYousif A. M. A. Rebeeh, Shaligram Pokharel, Galal M.M. Abdella, Abdelmagid S. Hammuda. Disaster management in industrial areas: Perspectives, challenges and future research. Journal of Industrial Engineering and Management. 2019; 12 (1):133.
Chicago/Turabian StyleYousif A. M. A. Rebeeh; Shaligram Pokharel; Galal M.M. Abdella; Abdelmagid S. Hammuda. 2019. "Disaster management in industrial areas: Perspectives, challenges and future research." Journal of Industrial Engineering and Management 12, no. 1: 133.
This research proposes a multi-criteria decision-making (MCDM) framework and demonstrates the impact of competitive conditions on supplier evaluation process for construction supply chains. The paper focuses on the supply chain of a large-scale housing project in order to illustrate the role of competitive capability and suppliers’ profile and its influence on supplier evaluation based on prevailing supply/market conditions. Various scenarios are investigated to demonstrate the impact of competition on supplier evaluation. The contribution of the study lies in highlighting the impact of supply/market conditions on MCDM decisions causing supplier evaluation ‘imbalance’ and MCDM usage. It is expected that the study will be useful for project management, construction, supply chain management, sourcing professionals. The findings of the study are generalisable to projects-based situations such as petroleum refinery and ship building where bill of materials typically consists of thousands of items and a large number of suppliers are involved.
Dinesh Seth; Krishna Nemani; Shaligram Pokharel; Abdulla Yaqoub Al Sayed. Impact of competitive conditions on supplier evaluation: a construction supply chain case study. Production Planning & Control 2017, 29, 217 -235.
AMA StyleDinesh Seth, Krishna Nemani, Shaligram Pokharel, Abdulla Yaqoub Al Sayed. Impact of competitive conditions on supplier evaluation: a construction supply chain case study. Production Planning & Control. 2017; 29 (3):217-235.
Chicago/Turabian StyleDinesh Seth; Krishna Nemani; Shaligram Pokharel; Abdulla Yaqoub Al Sayed. 2017. "Impact of competitive conditions on supplier evaluation: a construction supply chain case study." Production Planning & Control 29, no. 3: 217-235.
Purpose The purpose of this paper is to demonstrate the use of Petri nets in a job shop setup for the improvement in the utilization of machines. Design/methodology/approach The study discusses concepts such as reachable state, token and matrix equations set, and demonstrates the improvements in machines’ utilization in a job shop. It makes use of algorithms to generate reachable markings to obtain utilization. The study not only describes the application of theory, but also extends the body of knowledge on Petri nets and job shops. Findings In this study, machines’ utilization has been studied in a job shop with six machines and eight products. The study finds that substantial utilization improvement in job shop set up can be obtained through the application of Petri nets. The study also exposes that Petri nets are mostly used for machines, jobs and tools scheduling problems, but its use in machines’ utilization is neglected. The framework and application presented here along with generalizable findings, is the first to report about machine utilization improvement in job shop manufacturing environment. Practical implications Job shops are characterized by high unit production cost, low investments, low volume and high variety, complex flows, flexible and skilled work force, general purpose machines, high material handling; resulting in poor utilization of machines. Therefore, the findings of this study can help in reducing such costs through better machine utilization. This can help in increasing the competitiveness of the companies. Originality/value The contribution of study lies in investigating and improving stage wise utilization in a job shop setup. It has never been reported before.
Pravin S. Pachpor; Rakesh Shrivastava; Dinesh Seth; Shaligram Pokharel. Application of Petri nets towards improved utilization of machines in job shop manufacturing environments. Journal of Manufacturing Technology Management 2017, 28, 169 -188.
AMA StylePravin S. Pachpor, Rakesh Shrivastava, Dinesh Seth, Shaligram Pokharel. Application of Petri nets towards improved utilization of machines in job shop manufacturing environments. Journal of Manufacturing Technology Management. 2017; 28 (2):169-188.
Chicago/Turabian StylePravin S. Pachpor; Rakesh Shrivastava; Dinesh Seth; Shaligram Pokharel. 2017. "Application of Petri nets towards improved utilization of machines in job shop manufacturing environments." Journal of Manufacturing Technology Management 28, no. 2: 169-188.
Zhitao Xu; Shaligram Pokharel; Adel Elomri; Fatih Mutlu. Emission policies and their analysis for the design of hybrid and dedicated closed-loop supply chains. Journal of Cleaner Production 2017, 142, 4152 -4168.
AMA StyleZhitao Xu, Shaligram Pokharel, Adel Elomri, Fatih Mutlu. Emission policies and their analysis for the design of hybrid and dedicated closed-loop supply chains. Journal of Cleaner Production. 2017; 142 ():4152-4168.
Chicago/Turabian StyleZhitao Xu; Shaligram Pokharel; Adel Elomri; Fatih Mutlu. 2017. "Emission policies and their analysis for the design of hybrid and dedicated closed-loop supply chains." Journal of Cleaner Production 142, no. : 4152-4168.
We extend the classical economic order quantity model to address the joint replenishment of multiple products under substitution. The proposed model optimizes ordering quantities for each product under substitution effects with the objective of minimizing the total cost associated with the setup, holding, and shortage of products, while partially meeting demand. First, the special case of three substitutable products is examined in detail. Then, a nonlinear mathematical programming formulation is presented as a general purpose solution approach for any number of substitutable products. The convexity of the model is discussed. We find that the objective function to be convex in the important special case of products having equal unit holding costs, which typically holds for substitutable products in practice. Sensitivity analysis is conducted in order to determine the impact of cost parameters variations on the ordering policy. We focus on identifying conditions that favour substitution among products. We find that allowing substitution among products is an effective vehicle for cost cutting in supply settings involving high fixed costs, low holding costs, and low shortage costs.
Bacel Maddah; Mohamed Kharbeche; Shaligram Pokharel; Ahmed Ghoniem. Joint replenishment model for multiple products with substitution. Applied Mathematical Modelling 2016, 40, 7678 -7688.
AMA StyleBacel Maddah, Mohamed Kharbeche, Shaligram Pokharel, Ahmed Ghoniem. Joint replenishment model for multiple products with substitution. Applied Mathematical Modelling. 2016; 40 (17-18):7678-7688.
Chicago/Turabian StyleBacel Maddah; Mohamed Kharbeche; Shaligram Pokharel; Ahmed Ghoniem. 2016. "Joint replenishment model for multiple products with substitution." Applied Mathematical Modelling 40, no. 17-18: 7678-7688.
Fatih Mutlu; Mohamed Kais Msakni; Hakan Yildiz; Erkut Sönmez; Shaligram Pokharel. A comprehensive annual delivery program for upstream liquefied natural gas supply chain. European Journal of Operational Research 2016, 250, 120 -130.
AMA StyleFatih Mutlu, Mohamed Kais Msakni, Hakan Yildiz, Erkut Sönmez, Shaligram Pokharel. A comprehensive annual delivery program for upstream liquefied natural gas supply chain. European Journal of Operational Research. 2016; 250 (1):120-130.
Chicago/Turabian StyleFatih Mutlu; Mohamed Kais Msakni; Hakan Yildiz; Erkut Sönmez; Shaligram Pokharel. 2016. "A comprehensive annual delivery program for upstream liquefied natural gas supply chain." European Journal of Operational Research 250, no. 1: 120-130.
We propose a network flow model for dynamic selection of temporary distribution facilities and allocation of resources for emergency response planning. The model analyzes the transfer of excess resources between temporary facilities operating in different time periods in order to reduce deprivation. Numerical analysis shows that the location of temporary facilities is determined by the demand and supply points. This work contributes to the emergency response planning that requires a quick response for the supply of relief materials immediately after a disaster hits a particular area.
Danya Khayal; Rojee Pradhananga; Shaligram Pokharel; Fatih Mutlu. A model for planning locations of temporary distribution facilities for emergency response. Socio-Economic Planning Sciences 2015, 52, 22 -30.
AMA StyleDanya Khayal, Rojee Pradhananga, Shaligram Pokharel, Fatih Mutlu. A model for planning locations of temporary distribution facilities for emergency response. Socio-Economic Planning Sciences. 2015; 52 ():22-30.
Chicago/Turabian StyleDanya Khayal; Rojee Pradhananga; Shaligram Pokharel; Fatih Mutlu. 2015. "A model for planning locations of temporary distribution facilities for emergency response." Socio-Economic Planning Sciences 52, no. : 22-30.
Fatih Mutlu; Shaligram Pokharel; Noura Gamal; Fatima Almadhoun; Dima Diab; Zina Fadel; Lama Al-Sarraj. Using lean principles and process analysis techniques to reduce congestion in out patient departments. Qatar Foundation Annual Research Forum Proceedings 2012, BMPS3 .
AMA StyleFatih Mutlu, Shaligram Pokharel, Noura Gamal, Fatima Almadhoun, Dima Diab, Zina Fadel, Lama Al-Sarraj. Using lean principles and process analysis techniques to reduce congestion in out patient departments. Qatar Foundation Annual Research Forum Proceedings. 2012; (2012):BMPS3.
Chicago/Turabian StyleFatih Mutlu; Shaligram Pokharel; Noura Gamal; Fatima Almadhoun; Dima Diab; Zina Fadel; Lama Al-Sarraj. 2012. "Using lean principles and process analysis techniques to reduce congestion in out patient departments." Qatar Foundation Annual Research Forum Proceedings , no. 2012: BMPS3.
Shaligram Pokharel. Stakeholders’ roles in virtual project environment: A case study. Journal of Engineering and Technology Management 2011, 28, 201 -214.
AMA StyleShaligram Pokharel. Stakeholders’ roles in virtual project environment: A case study. Journal of Engineering and Technology Management. 2011; 28 (3):201-214.
Chicago/Turabian StyleShaligram Pokharel. 2011. "Stakeholders’ roles in virtual project environment: A case study." Journal of Engineering and Technology Management 28, no. 3: 201-214.