Ehsan Javanmardi

• Associate Professor of Nanjing University of Aeronautics and Astronautics
• Professor (Associate) at Nanjing University of Aeronautics and Astronautics

Given the growing popularity of online shopping, promoting environmental awareness and encouraging eco-friendly choices on these platforms are essential for advancing sustainability. This study explores the specific influence of presenting environmental educational video messages right before product selection, focusing on how they enhance visual a...

This study seeks to create an optimal investment portfolio by applying grey principal components analysis (GPCA) to financial performance evaluation. The GPCA model concomitantly relies on the advantages of grey systems theory (requiring no definite range of data distribution and using limited data) and those of principal components analysis (reduc...

Due to environmental concerns and the growing emphasis on sustainable consumption, educating consumers and promoting eco-friendly products are paramount. In this perspective, this research aims to investigate the effect of the tone of video messages delivered just before the decision-making process on visual attention, environmental awareness, and...

Purpose This study examines the role of Virtual Reality (VR) in tourism marketing, analyzing its psychological effects, demographic differences and factors influencing adoption. It seeks to identify and measure the main drivers and obstacles to VR acceptance, improving predictions of adoption trends in tourism planning and experiences across variou...

The medical devices, biotechnology, and healthcare industries are closely tied to innovation, with companies relying on research and development and new product introduction. However, innovation activities like research and development can be costly, and commercializing new products faces complexities. Having effective business models (BMs) aligned...

Electric vehicles are an important part of governments’ environmental policies, and therefore understanding the factors affecting their market share is very important. So, this research is designed to investigate the factors affecting electric vehicle adoption, considering the effects of the COVID-19 pandemic and sustainable development level. Effe...

Today’s challenges to sustainability are explored through a complex combination of interdisciplinary topics that explore various interactions between economic, social, and environmental systems that further contribute to existing uncertainties. Solving complex/dynamic sustainability constraints does not demand exclusively technical and practical me...

Every scientific or intellectual movement rests on central premises and assumptions that shape its philosophy. The purpose of this study is to review a brief account of the main philosophical bases of grey systems theory (GST) and the paradigm governing its principles. So, the recent studies on the philosophical foundations of GST have been reviewe...

In this research, a timely diagnosis and prediction mechanism for drill failure are provided to improve the maintenance process in drilling through fuzzy inference systems. Failures and decisions are based on information and reliability as well, and that affects the quality of decision-making. We apply the potential of if-then rules and a new appro...

Business systems are a subclass of dynamic, complex systems; the plurality of multifarious and interwoven factors affecting a business system makes prediction, modeling, and decision-making challenging for the players in such systems. This study conceptualises dynamic business modeling from a sustainability viewpoint by investigating the basic prin...

This study seeks to explicate the philosophical foundations and theoretical outlines of grey systems theory by focusing on human perception, cognition, and understanding processes and by considering their functions in the process of producing knowledge. Primarily, the study investigates the processes of perception, cognition, and understanding, as...

Every scientific or intellectual movement is founded upon basic assumptions and hypotheses that shape its specifically formulated philosophy. This study seeks to explore and explicate the basic philosophical underpinnings of grey systems theory (GST), as well as the paradigm governing its postulates. The study, more specifically, scrutinizes the un...

The main purpose of this study is to probe into the human capacity of understanding systems and defects in human knowledge of the world. The study addresses the greyness levels and systems levels and explains why the world cannot be perceived as a purely white or black structure. It also clarifies why human knowledge of systems always remains grey....

In recent years, there have been international movements advocating more sustainable societies, and as a result of such movements, a remarkably important sub-branch has been shaped in systems studies called sustainability. It would be vital to propose methods that could deal with inherent complexities and uncertainties in such systems. Grey systems...

Background: The phenomenon of the increasing number of ageing people in the world is arguably the most significant economic, health and social challenge that we face today. Additionally, one of the major epidemiologic trends of current times is the increase in chronic and degenerative diseases. This paper tries to deliver a more up to date overvie...

The present study seeks to provide an overview of studies dealing with the grey systems theory from the perspective of socio-economic systems. A scoping review is conducted to explore the studies focusing grey systems theory and its applications in socio-economic systems. The publications selected for analysis were collected through searching the d...

The introduction of information technology into all aspects of our lives has brought forth qualitative and quantitative changes on such a large scale that this process has come to be known as the Fourth Industrial Revolution, or Industry 4.0. The aim of this paper is to fill in the gaps and provide an overview of studies dealing with Industry 4.0 f...

There are various risks in the life cycle of construction projects due to their unique essence. Risk management is recognized as one of the most important processes for achieving project goals, including time, cost, quality, and scope. The purpose of this research is to evaluate the risk factors affecting the construction projects of Shiraz Municip...

Settlement is one of the most basic human needs and its quality has a direct effect on quality of life. These questions are posed in the research given the importance of housing sector in the society: firstly, housing demand depends on to which factors of the cultural aspect? Secondly, how is the dynamics governing the relationships between cultura...

In this paper, we present a hybrid method of game theory and dynamic systems to study the behavior of firms in an oligopoly market. The aim of this study is to build a model for an oligopoly game on the basis of feedback loops and system dynamics approach and to solve the resulted problems under some special conditions where traditional game theory...

The main idea of this study is to provide a conceptual model of a game in conditions of oligopoly based on feedback loops and system dynamics approach and explore the dynamics prevailing in a game in the real world and solve problems that conventional methods of game theory cant study fhem. During this study attempt to compare the complex method of...

This study is concerned with proposing a method for assessing the quality of public transportation services. The purpose of the study is to provide a solution for comparing the quality of public transportation services in several units such as various bus service lines in a particular city or a district, and rank them for subsequent decision-making...

This article attempts to examine and identify entrepreneurs consulting networks and entrepreneurs degrees of interest to each group. Thus the consultant networks were divided into 5 spheres of “private”, “job”, “experience”, “professional” and “market”; using Data collected by “Global Entrepreneurship Monitor” from 5 countries: Brazil, Denmark, Ira...

Economic factors undoubtedly play an important role in sports entrepreneurship, especially football, and fans' support helps clubs to increase their revenue and improve their financial status. The aim of this study is to systematically investigate spectator demand in the English Premier League, its interaction with the media and the effects of thes...

his paper is to find the factors effective on football matches watching demand in stadiums. The factors effective on the demand are divided into 4 categories; economical, environmental, appeal, and geographical/demographical factors which converted into 23 independent parameters by virtue of the device appropriate to gather related information. In...