Mazyar Ghadiri Nejad

Cyprus International University

In recent years, unquestionable warnings like the negative effects of CO2 emissions, the necessity of utilizing sustainable energy sources, and the rising demand for municipal electrification have been issued. Therefore, users are encouraged to provide off-grid and sustainable energy systems for their own homes and businesses, especially if they ar...

Many manufacturing companies are always looking for a way to reduce energy consumption by utilizing energy-efficient production methods. These methods can be different depending on the type of products and production technology. For instance, one of the ways to increase energy efficiency and keep the precision of production is to use robots for the...

Multi-objective task graph scheduling is a well-known NP-hard problem that plays a significant role in heterogeneous distributed systems. The solution to the problem is expected to optimize all scheduling objectives. Pretty large state-of-the-art algorithms exist in the literature that mostly apply different metaheuristics for solving the problem....

In recent years, unquestionable warnings like the negative impacts of CO2 emissions, the necessity of utilizing sustainable energy sources, and the rising demand for municipal electrification have been issued. In this study, by incorporating two significant assumptions, such as electricity production in close proximity to the business location and...

Recently, the relationship between green human resource management (GHRM) and environmental performance has received a lot of attention from scholars. Teaching, training, and research and development carried out in higher education institutions, which are crucial sources for the promotion of sustainability, encourage GHRM. Using signaling theory, t...

Nowadays, sustainability is one of the key elements which should be considered in energy systems. Such systems are essential in any manufacturing system to supply the energy requirements of those systems. To optimize the energy consumption of any manufacturing system, various applications have been developed in the literature, with a number of pros...

One of the fundamental areas of the tourism industry that has a significant impact on the economy of the host country is medical tourism. Many nations strive to establish a reputation both domestically and abroad. There is intense competition among nations to entice medical tourists, yet the motivating factors and purchasing patterns may be very di...

Emphasizing the need to provide a coordinated flood management strategy in the country and avoid acting in an isolated way when it occurs, improving the attitude of flood control during floods, and controlling floods with comprehensive analysis are among the main purposes of the current study. In this study, the environment’s physical, technologica...

The assembly line balancing problem (ALBP) is an eminent NP-hard topic that is discussed in mass production systems with low diversity. Primarily, two types of ALBPs are discussed in the literature as type I, which aims to find the minimum number of workstations for a given cycle time, and type II, which assigns some tasks to a given number of work...

Modern supply chains include multi-layered and geographically separated entities, which leads to the globalization of supply chains and the need for separate regulatory policies. Because of that, the process of managing and controlling information and material flows throughout the supply chain structure has become laborious. Nevertheless, being in...

In this research, a real-life Line Balancing Problem (LBP) at a metalworking company is considered to find the minimum number of workstations. Tasks are assigned to workstations aiming to minimize the required number of workstations, subject to considering a given production rate and satisfying the precedence relationships between tasks. Besides, l...

To characterize the process of lead-time reduction in EPC project-based organizations, including the engineering, procurement, and construction activities, various elements such as organizational issues, firm resources, used methods and techniques, and performance measuring tools are important. In this study, the four mentioned elements are evaluat...

Aviation 4.0 is one of the most important contexts that started to attract many researchers in recent years. The main element of Aviation 4.0 is to employ and manage unmanned aircraft vehicles (UAVs). Employing UAVs in the Aviation 4.0 era will minimize the human dependency level of the aviation management systems. Embedding UAVs with Blockchain te...

In the last decade, Aviation 4.0 has attracted lots of researchers’ attention and with huge scientific progress, it has become one of the most important issues that researchers have focused on. According to the literature, different applications have been proposed for Aviation 4.0, especially in the transportation area. The intelligent and fuzzy UA...

Catalyst regeneration is highly important in chemical processes in terms of process performance and economic efficiency. In this study, deactivated rib ring nickel alumina (Ni/Al2O3) catalysts are regenerated in a pilot plant supercritical CO2 extractor. The catalysts are collected from the Iron Midrex reformer unit and are provided by Khouzestan S...

In the present study, pure chitosan and gelatin solutions are blended at four various ratios with the addition of Fluorohydroxyapatite (FHA). The specimens are fed into the Freeze-Drying (FD) apparatus to produce porous architectures. The X-ray Diffraction (XRD) and the Scanning Electron Microscopy (SEM) are used for analyzing the solutions and fin...

The novel bio-nanocomposite scaffold provides a temporary environment for bone growth, and facilitates cell adhesion, growth, and differentiation. In the present study, a 3D printing method is used for fabricating bone scaffolds with wollastonite-hydroxyapatite (WS-HA) composed and chitosan polymer with the polycaprolactone (PCL). Wollastonite (WS)...

One of the well-known ways to produce porous scaffolds or special three-dimensional (3D) micro-nanostructures is using the 3D printing technique. This technique requires a suitable computerized model of the scaffold using computer-aided design software or the computed tomography. The 3D printer fabricates a product by using a digital file and creat...

When it comes to innovation, tourism industries are highly dependent on competent human resources. In service industries, especially in the tourism industry, an organization cannot survive without innovation. In this book, different categories of Innovation are represented in a novel conceptual model for the first time. This model introduces compet...

In this study, we consider a real-life Line Balancing Problem (LBP) at a metalworking company. Based on the concerns of the company’s managers, the number of workstations is considered as the main performance criteria for line balancing, while line efficiency and smoothness are considered as the second and the third performance criteria. Two altern...

Ebben a tanulm´anyban egy egyutas automatiz´alt gy´art´or´eszleggel (FAMC) foglalkozunk, ahol minden munkadarabot minden g´epen meg kell munk´alni, minden munkadarab eset´eben a g´epek sorrendje azonos (flow shop), ´es a gy´art´or´eszlegen bel¨ul a munkadarabok automatiz´alt mozgat´as´at egy ipari robot v´egzi. Gy´art ´orendszer¨unkben minden g´ep...

In the present study, a group of microcapsule-based smart coatings has been investigated to decrease the corrosion rate in oil and gas transmission lines. The microcapsules are made of epoxy resin and self-healing materials such as oil, which acts as a repairing agent. In this study, the parameters affecting the coating performance such as agitatio...

In the literature, there are various types of assembly line balancing problems. Consequently, different types of solution approaches such as exact, heuristic, and metaheuristics have been proposed to solve such problems. In this research, we are going to propose a metaheuristic solution method based on applied grouping evolution strategies to solve...

Bone regeneration is a growing and relatively effective treatment in most bone disease treatments. Adverse effects associated with conventional transplantation techniques have led to advanced bone tissue engineering. The purpose of this study is to produce a bone scaffold, made of sodium alginate (Na-Alg) based scaffold, with the addition of wollas...

Despite the considerable growth of interest in medical tourism in the last decade, there is no standard procedure to measure the pivotal factors in medical tourism destinations. Medical tourism is a rising global phenomenon that is strongly dependent on innovation and knowledge management. Being both innovative and systematic in medical tourism req...

Three-dimensional bio-nanocomposite scaffolds using bioactive wollastonite and bioglass as the base materials are composed with 0 (as the control), 5, 10, and 15 wt% of magnetic nanoparticles (MNPs) with space-based agents sodium bicarbonate (NaHCO3). The process, in this study, is performed by homogenizing and mixing MNPs, wollastonite, and biogla...

Nearly every 100 years, humans collectively face a pandemic crisis. After the Spanish flu, now the world is in the grip of coronavirus disease 2019 (COVID-19). First detected in 2019 in the Chinese city of Wuhan, COVID-19 causes severe acute respiratory distress syndrome. Despite the initial evidence indicating a zoonotic origin, the contagion is n...

Similar to metallic implant, using the compact bio-nanocomposite can provide a suitable strength due to its high stiffness and providing sufficient adhesion between bone and orthopedic implant. Therefore, using zirconia-reinforced calcium phosphate composites with new generation of calcium silicate composites was considered in this study. Additiona...

In Osteoporosis, bone mechanical strength decreases and as a result, the risk of bone fracture increases. Osteoporosis is also referred as a "silent illness" since it usually develops asymptomatic until it breaks a long bone, like the femur. In recent years, porous scaffolds have been utilized to repair damaged bone tissue. For bone tissue engineer...

In Osteoporosis, bone mechanical strength decreases and as a result, the risk of bone fracture increases. Osteoporosis is also referred as a "silent illness" since it usually develops asymptomatic until it breaks a long bone, like the femur. In recent years, porous scaffolds have been utilized to repair damaged bone tissue. For bone tissue engineer...

Dans ce livre, différents problèmes réels des services d'urgence médicale et divers modèles liés au temps de réponse aux cas d'urgence sont expliqués. Les services d'urgence et les services normaux utilisant des véhicules aériens et terrestres sont expliqués pour atteindre les accidents ou les cas d'urgence. Les auteurs de ce livre veillent à ce qu...

In questo libro vengono spiegati diversi problem reali del cervizio di emergenza medica e vari model relativi ai tempi di risposta ai casi di emergenza. Sia i cervix di emergenza che i cervix normal, utilizzando veicoli aerei e terrestri, vengono spiegati per raggiungere gli incidenti oi casi di emergenza. Gli autori di questo libro si assicurano c...

En este libro se explican diferentes problemas de los servicios de emergencia médica en la vida real y varios modelos relacionados con el tiempo de respuesta a los casos de emergencia. Se elucidan tanto los servicios de emergencia como los normales utilizando vehículos aéreos y terrestres para llegar a los accidentes o casos de emergencia. Los auto...

Neste livro, so explicados diferentes problemas de servios de emergncia mdica da vida real e vrios modelos relacionados com o tempo de resposta aos casos de emergncia. Tanto os servios de emergncia como os servios normais, utilizando veculos areos e terrestres, so elucidados para alcanar acidentes ou casos de emergncia. Os autores deste livro asseg...

In diesem Buch werden verschiedene reale Probleme des medizinischen Notdienstes und verschiedene Modelle in Bezug auf die Reaktionszeit auf die Notfälle erläutert. Sowohl der Notfall- als auch der normale Dienst mit Hilfe von Luft- und Bodenfahrzeugen wird erläutert, um Unfälle oder Notfälle zu erreichen. Die Autoren dieses Buches stellen sicher, d...

W tej książce objaśnione są różne rzeczywiste problemy związane z ratownictwem medycznym oraz różne modele związane z czasem reakcji na nagłe przypadki. Zarówno służby ratownicze, jak i normalne służby przy użyciu pojazdów naziemnych i powietrznych są wyjaśnione, aby dotrzeć do wypadków lub przypadków awaryjnych. Autorzy tej książki zapewniają, że...

In dit boek worden verschillende real-life medische noodhulpproblemen en verschillende modellen met betrekking tot de reactietijd op de noodgevallen uitgelegd. Zowel noodhulpdiensten als normale diensten door gebruik te maken van lucht- en grondvoertuigen worden toegelicht om ongevallen of noodgevallen te bereiken. De auteurs van dit boek zorgen er...

With the aid of fast development in manufacturing techniques, it is now possible to produce structures with considerable geometrical complexity. In the current investigation, 3D printing machine is utilized to produce beam-type bone implant made of porous polymers with three different periodic cellular topologies. The stress-strain curves and mecha...

Robots are used in manufacturing cells for wide purposes including pick and place of the items from a location to a destination. As far as the authors’ knowledge in this context, the scheduling problem of a real-life flexible robotic cell (FRC) with intermediate buffers is missing in the literature. Therefore, in this study, the process-sequencing...

Flexible manufacturing cells are widely used in many real-life industries. These cells contain a group of highly automated machines, the input station, and the output station that are interconnected by a robot which handles the materials, automatically. The system repeats a cycle in its long run, and the cycle time depends on the order of the loadi...

ABSTRACT Objective(s): Cardiovascular diseases (CVDs) are the leading cause of mortality in the elderly. A common medical procedure for the treatment of CVDs is the replacement of the blocked or narrowed arteries, which is currently the optimal vascular transplant associated with autograft transplantation. In general, the saphenous veins and radial...

Abstract In the current investigation, the microarchitecture of bio-nanocomposite scaffold, which is fabricated by natural synthetic diopside and composed of magnetite nanoparticles (MNPs), is considered. The MNPs are tested with various weight fractions (0, 5, 10, and 15 wt%) and are manufactured by the freeze-drying technique using sodium alginat...

Location analysis is the study and development of models, techniques, and tools to provide decision makers with good solutions to realistic locational decision problems. Shopping centers are retail properties with special qualities compared to other property investments. The large shopping centers containing cinemas, entertainment areas, restaurant...

Assembly line balancing problem (ALBP) is an allocation of given tasks to the workstations in a way that the number of workstations or the idle times of workstations gets minimized. ALBP problem is a well-known problem in mass-production systems with high production volume and low diversity. In division and grouping allocation problems like ALBP, m...

In this book, different real-life medical emergency service problems and various models related to the response time to the emergency cases are explained. Both emergency and normal services by using aerial and ground vehicles are elucidated to reach accidents or emergency cases. The authors of this book ensure that the respected readers may find al...

In the current study, bio-nanocomposites scaffolds including natural hydroxyapatite (n-HA) composed with different weight fractions of copper oxide nanoparticles (CuO-NPs) are fabricated using the space holder technique. After that, the manufactured samples are coated with gelatin polymer loaded with ibuprofen drug. Via experimental methods, the me...

Flexible robotic cells are used in many real-life industries to produce standardized items at a high production speed. These cells use high-tech and expensive machines. Determining the schedules of these cells for the most efficient usage arises as an important optimization problem in those industries. In this study, the scheduling problem of a fle...

When it comes to innovation, tourism industries are highly dependent on competent human resources. In service industries, especially in the tourism industry, an organization cannot survive without innovation. In this study, the different categories of Innovation are represented in a novel conceptual model for the first time. This model introduces c...

Assembly line balancing problems (ALBPs) are among the well-known problems in manufacturing systems that belong to NP-hard class of problems. In the literature, there are various metaheuristic methods proposed to solve different models of such a problem under various assumptions. This research considers the U-shaped ALBP and proposes a hybrid solut...

This study deals with an off-grid hybrid energy generation system composed of wind turbines, photovoltaic cells, and fuel cells to supply a specific load. The purpose is to minimize the cost of energy generation over a period of lifetime while satisfying a set of system reliability constraints in the system. The stated objective is to determine the...

In the last decade, the aerial delivery system has been considered as a promising response to increasing traffic jams and incremental demand for transportation. In this study, a distance-constrained mobile hierarchical facility location problem is used in order to find the optimal number and locations of launch and recharge stations with the object...

This study deals with scheduling problem of a flexible robotic cell with m-machines and a robot. The machines are identical, and each machine performs all of the processes for producing a finished product. These machines are arranged in a line where one input buffer and one buffer are put at the beginning and the end of the line, respectively. A ro...

In this study, a bi-objective scheduling problem of a flexible robotic cell is considered aiming to a trade-off between cell’s processes scheduling and the production cost. At the cell, machines are identical and parallel and in line. There is an input buffer for the raw materials and an output buffer for the products. A robot is in charge of loadi...

The aim of the present study was to study the mechanical and biologocal properties of the bredigite-magnetite (Ca7MgSi4O16-Fe3O4) nanocomposite with various amounts of magnetite (0, 10, 20 and 30wt%). According to the obtained results, the properties of the constructed scaffolds have an extreme dependence on the magnetite content. In this research,...

This thesis deals with two different flexible manufacturing cells. Both cells contain m identical computer numerical control (CNC) machines that are able to perform all the processes to produce a final product. The CNC machines are set up in a line layout. In the both cases, one input station and one output station exists at the beginning and at th...

The typical production system in carton box production companies is cell-production. These cells normally benefit from a mobile robot which serves the machines according to a given schedule. One of the main problems of such companies is finding the order of robot moves in a way that the time required for completing all jobs is minimized. In the stu...

In real life, many events may have severe effects on human being lives. These events can happen casually such as accident, heart attack or another severe disease, and deliberately like fights among people. From the engineering point of view, it does not matter what the reason of happening such events is, but the important thing is to rescue the aff...

Flexible robotic cells are used to produce standardized items at a high production speed. In this study, the scheduling problem of a flexible robotic cell is considered. Machines are identical and parallel. In the cell, there is an input and an output buffer, wherein the unprocessed and the finished items are kept, respectively. There is a robot pe...

In this study, the cutting problem as one of the main problems of the box production industries is discussed. The cutting problem refers to the problem of dividing a usually large piece of the rectangular raw materials to the smaller pieces for producing various products. The cutting problems are NP-hard problems. Offering good solutions for these...

Background: By considering innovation as a new project in hospitals, all the project management’s standard steps should be followed in execution. This study investigated the validation of a new set of measures in terms of providing a procedure for knowledge management-oriented innovation that enriches the hospital management system. Methods: The re...

Zn-substituted cobalt ferrite nanoparticles with dif- ferent zinc contents (Co1 − xZnxFe2O4, x = 0.25, 0.5, 0.75) were prepared through a novel combustion method and sub- sequent milling process. A magnetostriction test was conduct- ed to investigate the migration of Co2+ ions away from the octahedral sites to confirm the decrease of the anisotropy...

Nowadays, increasing the flexibility in producing different part family types based on customer demands, decreasing the operation times, and keeping the quality of the products high at the same time are main concerns of factories to remain in the market. In recent decades, to cover all of the mentioned concerns, using flexible robotic cells are ver...

In this study, the cutting problem as one of the main problems of the box production industries is discussed. The cutting problem refers to problem of dividing a normally large piece of the rectangular raw materials to the smaller pieces for producing various products. The cutting problems are NP-hard problems. Offering good solutions for these pro...

All enterprises are principally concerned about the profitability of their businesses and willing to optimize their procedures for having more profit and less cost. One of these procedures is production planning and scheduling that plays a crucial role in minimizing the companies’ production time and costs. Production planning and scheduling is in...

Background The aim of this study was to propose a new stochastic model to study the time course of ethanol elimination in human bodies. Methods The times and amount of alcohol ingested are assumed to be random in controllable intervals. Constant elimination rate follows zero order kinetics and is replaced by first order kinetics when the effects o...

First author was the speaker

There is no doubt that successful and on-time product development or product project management is critical to any industrial performance. But given the recent developing set of sanctions against Iran, the importance of on-time and on-budget product development for the sake of the company’s survival has increased particularly in terms of the abilit...

This research examines the attributes of reducing cycle time in new product development (NPD) in an Iranian EPC and gasoil tank manufacturer which is mainly involved in the oil and gas industry. The oil and gas industry as the heart of Iran economy, addresses a major concern from governmental and international resources point of view. Given a conti...

Assembly line balancing problem (ALBP) is one of the well-known problems in layout planning for mass-production systems with high production volume and low diversity. In division and grouping allocation problem like assembly line balancing, meta-heuristic algorithms which are based on group structure like grouping genetic algorithm, are more effici...

In this article, a Flexible Manufacturing Cell (FMC) with two machines is considered in which loading and unloading of the machines are made by a robot. The robot is at the center of the machines and it is able to perform a different cyclic move. The FMC has a flow shop technology and the robot serves the machines in a cyclic manner. This study con...