Mahdi Yousefi Nejad Attari

• Islamic Azad University of Bonab Branch, Bonab, Iran

In recent years, the resource-constrained project scheduling problem (RCPSP) has been recognized as one of the most well-known problems in the project management context. Project managers always try to assign the resources to the project activities optimally in a short period. However, this is a challenging and complex problem that is categorized a...

Due to the necessity of sustainable development and its increasing importance in urban issues, today in different cities of the world, the bicycle as the main means of transportation is receiving more attention day by day. In this research, a positioning problem under the conditions of uncertainty is presented. In order to get closer to the real wo...

The stock portfolio optimization model is based on the fact that the future of the company can be predicted and estimated using the company's past data. However, there is no guarantee of the accuracy of this data, as there are many fluctuations in the financial markets. The Markowitz model is based on the selection of the optimal stock to maximize...

Recently, the adaptability of production systems is crucial for various facilities or departments, focusing on minimizing the cost associated with material flow in facility layout problems. To address these challenges, an examination of dynamic problems becomes imperative. This paper presents a mathematical model designed explicitly for dynamic fac...

Problem Statement. Proper and timely relief in the postdisaster phase is very important to minimize victims and casualties. It is necessary to assess the needs of the affected points and provide relief in the shortest possible time without wasting time. For this purpose, it is necessary and vital to determine the location of care centers, temporary...

As the demand for vehicle usage continues to surge, the strategic placement of fuel stations within urban areas has become a topic of significant consideration. The location of a fuel station is a critical factor in ensuring accessibility and efficiency. Landslides stand out as one of the most destructive hazards in natural terrain areas, emphasizi...

This study highlights the crucial role of organ transplantation in healthcare, underscoring its vulnerability to corruption and the importance of timely processes and strategic selection of transplant centre locations. Our study introduces a robust mathematical model aiming to optimize hospitals and organ transplant centres locations, transportatio...

Advanced technologies are gaining more attention in every industry sector. Therefore, to develop a logistics network that can adjust to effectively manage inventories for managing logistics while maximizing profit for all systems involved. The main objective of this research is to calculate the number of products to be dispatched at different inter...

In today's global economy, effective supply chain management plays a pivotal role in the success of a business. The repercussions of a business strategy on the entire supply chain remain uncertain until it is implemented. Utilizing simulations offers the opportunity to gauge performance before implementing the strategy. The primary aim of employing...

The oil industry plays an important role in global energy demand. Oil and other fossil fuels have been a major cause of environmental and global warming for decades. Many industries need oil as a major energy source, and it is important to minimize the environmental impact of oil( minimizing greenhouse gas (GHG)) and maximize its benefits Petroleum...

Healthcare System Management (HSM) is a technique for integrating technology in public hospitals. Knowledge of strategies and decision-making issues is crucial for improving hospital services during the HSM implementation since it directly impacts the efficiency of the hospital and the level of the patient healthcare system. To address the research...

Background and Objective: The present article will compare the supply chain network model with the traditional supply chains. Method:Three commodities forecasting models and the Squirrel Search Algorithm (SSA) were applied to investigate the forecasting impact and effectiveness of the algorithm; MATLAB software features and functionalities were emp...

The efficiency evaluation of the healthcare chain network becomes crucial as healthcare systems seek to enhance patient satisfaction and reduce costs during the health check. This study proposes a mixed-integer linear programming model that resolves the patient selection problem for influential diagnosis-related groups treatments by considering the...

In order to reduce costs and increase the efficiency of the supply chain system, cross-docking is one of the essential warehousing management strategies to combine products from different suppliers to different customers. In this study, a particular state of cross-docking is considered in which inbound trucks can also be used as outbound trucks whi...

In this research, a novel method is proposed to optimize the costs associated with the supply chain of short-lived blood products, which is different from other existing methods. According to the novelty of this approach and the lack of familiarity with its difficulties, a scaling is applied in order to reduce the size of problem space, which can l...

Electrical energy is unique because it must sustain a consistent production and consumption balance. This guarantees that the “generation-transmission-distribution-consumption-storage” electric power supply chain (EPSC) continues to be connected and inseparable through the power system’s complete operation. This paper is a type of secondary study....

In the present study, health services networks were classified into low-level hospitals (provision of public health services) and high-level hospitals (providing specialized health services), which are at risk of being disrupted. They refer the patients to high-level hospitals for inpatient visits or emergencies by ambulance. In the present case, p...

Home healthcare, a novel type of health treatment provided at residents’ homes for specific populations (elderly, disabled), is typically less expensive, more convenient, and efficient. The purpose of this article is to offer a paradigm for scheduling medical professionals from various medical institutes. With the need for home health care likely t...

Background and Objectives: A limited supply chain opportunity between blood donation and blood transfusion requires the optimization of each stage in the supply chain of the blood, to achieve more effective blood supply management in blood centers and hospitals. Since in previous researches the demand for blood products has not been predicted for t...

Warehouses and distribution centers are among the essential components in the supply chain, and their management is crucial. In the classifications made in the literature, warehouse management methods and distribution centers are divided into manual and machine forms. This system has advantages over previous systems, such as increased flexibility,...

This study investigates the effect of land use change for bioenergy production by considering the cost of value added and water quality in random conditions using waste and wheat residues that have produced biofuels. Therefore, a linear model for land use change was presented with the aim of reducing total costs and increasing production efficiency...

Purpose Consumption of fossil fuels due to their non-renewability has always been one of the fundamental problems among energy-related issues. Major dependence of mining equipment and activities on energy, fuel and adequate fuel allocation has become of great importance in fuel consumption of mines. Therefore, this study aims to propose a model for...

In land transportation, due to the importance of this business and competition between active organizations in this field, applying new technologies in management and making better decisions can be beneficial. We have presented three data mining techniques of clustering, association rules, and classification to investigate the factors affecting the...

p> Inland transportation, due to the importance of this business and competition between active organizations in this field, applying new technologies in management and making better decisions can be beneficial. We have presented three data mining techniques of clustering, association rules, and classification to investigate the factors affecting t...

p> Inland transportation, due to the importance of this business and competition between active organizations in this field, applying new technologies in management and making better decisions can be beneficial. We have presented three data mining techniques of clustering, association rules, and classification to investigate the factors affecting t...

Multi-layer facility location problems deal with providing service to customers in different layers. In the context of system performance and complexity, all the needed services of a customer that is entered to a system should be met and we suppose that the customer will remain in the system until the last layer. In this study, we present an integr...

Nowadays, a lot of transport-related data for traffic modelling are available. Many measures have been taken, which can be referred to as pricing related to traffic restrictions. Amongst the most critical problems in traffic, the plan is deciding the best price. Therefore, in this article, we have tried to use the genetic algorithm as one of the me...

I‌n o‌r‌d‌e‌r t‌o r‌e‌d‌u‌c‌e c‌o‌s‌t‌s a‌n‌d i‌n‌c‌r‌e‌a‌s‌e t‌h‌e e‌f‌f‌i‌c‌i‌e‌n‌c‌y o‌f t‌h‌e s‌u‌p‌p‌l‌y c‌h‌a‌i‌n s‌y‌s‌t‌e‌m, c‌r‌o‌s‌s d‌o‌c‌k‌i‌n‌g i‌s o‌n‌e o‌f t‌h‌e m‌o‌s‌t i‌m‌p‌o‌r‌t‌a‌n‌t w‌a‌r‌e‌h‌o‌u‌s‌i‌n‌g m‌a‌n‌a‌g‌e‌m‌e‌n‌t s‌t‌r‌a‌t‌e‌g‌i‌e‌s f‌o‌r c‌o‌m‌b‌i‌n‌i‌n‌g p‌r‌o‌d‌u‌c‌t‌s f‌r‌o‌m d‌i‌f‌f‌e‌r‌e‌n‌t p‌r‌o‌v‌i‌d‌e‌r‌s t...

In warehousing, products are collected from suppliers by incoming trucks and then transported to customers by outgoing trucks by unloading the load simultaneously. In case of accident, the timing of trucks plays an important role in the simultaneous loading unloading system. In this study, a case of simultaneous unloading in random conditions has b...

Decisions made for designing and operating a warehouse system are of great significance. These operational decisions are strongly affected by total logistics costs, including investment and direct operating costs. The number of orders made by customers in the logistics section of warehouse management is very high because the number, type of product...

The present research is about the location of preventive facilities. Effective preventive health care services play an important role in reducing medical costs and mortality in all human societies, and the level of customer access to these services can be considered as a measure of their effectiveness and effectiveness. In order to solve the waitin...

In this paper, a generalized network optimization model is developed for a complex blood supply chain including a regionalized blood bank system. This system consists of collection sites, testing and processing facilities, storage facilities, distribution centers, as well as points of demand (hospitals). To keep the network in contradiction of the...

This paper attempts to design a three-echelon supply chain network for mine industry considering suppliers, manufacturing centers and distributors with different kinds of vehicles. A multi-objective mixed integer programming model is proposed to minimize transportation costs, shortage costs, purchase costs, production costs and CO2 emissions of veh...

Blood transfusion services are vital components of healthcare systems all over the world. In this paper, a generalized network optimization model is developed for a complex blood supply chain in accordance with Iranian blood transfusion organization (IBTO) structure. This structure consists of four types facilities. Blood collection centers, blood...

Blood transfusion services are a vital section component of the healthcare system all over the world. Literature on studying and modeling of these systems is surprisingly sparse. In this paper, we expand a generalized network optimization model for the complex supply chain of blood, which is a regionalized blood bank system. In this paper; the purp...

The aim of this study is a ranking of risk factors in knowledge based companies risk factors in knowledge based companies have been extracted from the different and authentic papers and after verification by experts related questionnaire is designed Then using questionnaire and multicriteria decision making techniques by combining methods DEMATEL N...

Blood transfusion services are vital components of healthcare systems all over the world. In this paper, a generalized network optimization model is developed for a complex blood supply chain including a regionalized blood bank system. This system consist of collection sites, testing and processing facilities, storage facilities, distribution cente...

Blood supply chains play a key role in the healthcare systems. This chain is comprised of two important components including collecting donators’ blood and supplying blood’s products. The chief purpose of this paper is to concentrate on supplying red blood cells (RBCs) and present a novel constrained bi-objective mathematical model for a two-echelo...

مدیریت زنجیره تامین خون، یکی از اجزای اصلی سیستم سلامت هر کشور محسوب می‌گردد. این زنجیره از دو جزء جمع آوری خون اهدا کنندگان و عرضه فرآورده‌های خون تشکیل شده است. این مقاله با تمرکز روی موضوع عرضه فرآورده‌های مختلف خون، سعی در ارائه یک مدل ریاضی جهت کاهش هزینه‌های اتلاف و کمبود موجودی فرآورده‌های خونی بیمارستان‌ها دارد. در این مدل ضمن برآورده ساختن...

Background and Objectives: Among the key issues in the blood supply chain design, the location of blood collection centers is essential to easy access of donors for blood donation and distribution of blood products to hospitals, while the blood collection cost to be minimized. The aim of this study is to determine the optimal number and locations o...

One of the most fundamental components of healthcare systems is the blood supply chain management. This chain has two significant components including collecting donor' bloods and supplying blood's products. The main purpose of this paper is to concentrate on supplying blood products and present a novel constrained bi-objective mathematical model f...

One of the most fundamental components of healthcare systems is the blood supply chain management. This chain has two significant components including collecting donor’ bloods and supplying blood’s products. The main purpose of this paper is to concentrate on supplying blood products and present a novel constrained biobjective mathematical model fo...

The purpose of this study is to provide an effective method to evaluate service quality of Iranian airports by conducting customer surveys. Commonly, evaluation of service quality is an intricate multi-criteria decision making (MCDM). Indeed, an intricate decision process is regularly involved in which various requirements and fuzzy conditions have...

The purpose of this study is to provide an effective method to evaluate service quality of Iranian airports by conducting customer surveys. Commonly, evaluation of service quality is an intricate multi-criteria decision making (MCDM). Indeed, an intricate decision process is regularly involved in which various requirements and fuzzy conditions have...

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