Camelia Delcea

Bucharest University of Economic Studies | ASE · Department of Computer Science and Cybernetics

The global transition to sustainable energy systems has placed the use of electric vehicles (EVs) among the areas that might contribute to reducing carbon emissions and optimizing energy usage. This paper presents a bibliometric analysis of the interconnected domains of EVs, artificial intelligence (AI), machine learning (ML), and deep learning (DL...

Recognizing the importance of continuity in education, it was deemed necessary to carry out a study whose main objective is to identify the factors that lead to the intention to drop out in order to formulate effective strategies to combat this phenomenon. Early school dropout has negative consequences both for individual development and for social...

The increasing prevalence of disinformation has become a global challenge, exacerbated by the rapid dissemination of information in online environments. The present study conducts a bibliometric analysis of scholarly efforts made over time in the research papers associated with the disinformation field. Thus, this paper aims to understand and help...

This study provides a bibliometric analysis of the literature on circular economy in Romania, using data from the Web of Science database. The study covers the period from 1992 to 2023 and examines 741 articles from 253 different sources. The results show an annual growth rate of 15.86% in scientific production, highlighting a growing interest in s...

Fake news is one of the biggest challenging issues in today’s technological world and has a huge impact on the population’s decision-making and way of thinking. Disinformation can be classified as a subdivision of fake news, the main purpose of which is to manipulate and generate confusion among people in order to influence their opinion and obtain...

This study aims to address the persistent regional economic disparities in Romania by evaluating economic performance through Panel Autoregressive Distributed Lag (pARDL) and panel quantile regression (PQR) models. The analysis focuses on the impact of key economic variables, including research and development expenditures (CTCRD), IT infrastructur...

The EU Regional Competitiveness Index 2.0 measures a region's ability to provide an attractive environment for businesses and residents to work and live. According to this indicator, countries in the southern and eastern regions of the European Union are reported to have the lowest values. As it measures the performance of NUTS-2 regions, it was de...

This study investigates the factors influencing 𝐶𝑂2 emissions in Romania from 1990 to 2023 using the Autoregressive Distributed Lag (ARDL) model. Before the ARDL model, we identified a set of six policies that were ranked using Fuzzy Electre, Topsis, DEMATEL, and Vikor. The multi-criteria decision-making (MCDM) methods have highlighted the importan...

The purpose of this study, which adopts a cybernetics systems approach, is to analyze the circular economy landscape in Romania. It investigates the role of circular economy practices in the country’s endeavors to combat climate change and minimize its environmental footprint. Using data spanning from 2000 to 2022, we applied the autoregressive dis...

This study aims to provide a comprehensive bibliometric analysis covering the common areas between artificial intelligence (AI) applications and research focused on local or regional contexts. The analysis covers the period between the year 2002 and the year 2023, utilizing data sourced from the Web of Science database. Employing the Bibliometrix p...

Also referred to as green cities or eco-cities, sustainable urban centres have arisen from the imperative to harmonise economic, ecological, and social agendas, aimed at fostering resilient environments for the benefit of both present and future generations. This global interest in transitioning cities and communities towards sustainability is exem...

Research background: Over the last ten years, a substantial amount of scholarly research has delved into energy communities (ECs) from diverse viewpoints. These ECs are extremely important in setting the pathway to a clean energy transition. Purpose of the article: Our objective is to glean valuable insights from publications indexed in the Web of...

The concept of Corporate Social Responsibility (CSR) has arisen as a result of due to the increase in pollution and excessive exploitation of the Earth's resources, as well as the human resources caused by the activities of companies that seek to make profits at any cost. As resources have become increasingly limited and human performance has decre...

In an era where all information can be reached with one click and by using the internet, the risk has increased in a significant manner. Deepfakes are one of the main threats on the internet, and affect society by influencing and altering information, decisions, and actions. The rise of artificial intelligence (AI) has simplified the creation of de...

Our study investigates the relevance and application of key performance indicators (KPIs) and key risk indicators (KRIs) in business management from 1992 to 2023 through a comprehensive bibliometric analysis performed in RStudio using the Bibliometrix platform and in VOSviewer. Utilizing data from the Web of Science database, we identify trends, ke...

In the past couple of decades, the field of digitalization has grown in popularity. Given the substantial amount of research supporting its significance, it can be stated that this phenomenon manages to make its presence felt in any field at the moment, including the air traffic sector. The discussed effects may be seen in almost every element of a...

The concept of the circular economy was created around the desire to extend the life of products and, implicitly, their use in an economy. The waste reduction process is founded on the basis of the three R's - reduce, reuse, recycle, which aims to conserve natural resources. In order to determine the contribution made by the European Union (EU) sta...

The main interest of any company is to make as much profit as possible. But, in addition to economic considerations, it is also necessary to take into account the social context in which these companies operate, as well as the well-being of their employees. Now, when stress and burnout are more and more present among employees, the need for a balan...

The rapid advancement of technology has led to significant milestones in industrial progress, surpassing previous capabilities and presenting new challenges for adaptation. The current phase of industrial revolutions is characterized by accelerated technological development, particularly in automation and digitalization. For instance, the global in...

International portfolio management is influenced by the existence of “frictions”, factors or events that interfere with trade, which are linked in financial literature to market specific factors, such as available information, restrictions, investor protection, or market liquidity. Given the wide variety of factors that can be included in these cat...

The interest of the research community in happiness and its associated issues has been steadily growing over the years, including during the period marked by the COVID-19 pandemic. The pandemic has brought about significant changes in various aspects of people’s lives. In this study, the objective is to analyze the themes and the most significant t...

In recent years, the research community has increasingly embraced topics related to smart cities, recognizing their potential to enhance residents’ quality of life and create sustainable, efficient urban environments through the integration of diverse systems and services. Concurrently, recommender systems have demonstrated continued improvement in...

Sustainable development is a very important and highly debated concept worldwide, with almost all states around the globe recognizing the importance of supporting a balancing of economic, social and ecological plans to create a more prosperous and equitable world. The purpose of the current study is to identify the current context of the progress a...

Natural language processing (NLP) plays a pivotal role in modern life by enabling computers to comprehend, analyze, and respond to human language meaningfully, thereby offering exciting new opportunities. As social media platforms experience a surge in global usage, the imperative to capture and better understand the messages disseminated within th...

Over the past years, machine learning and big data analysis have emerged, starting as a scientific and fictional domain, very interesting but difficult to test, and becoming one of the most powerful tools that is part of Industry 5.0 and has a significant impact on sustainable, resilient manufacturing. This has garnered increasing attention within...

In this study, we explored the dynamic field of fuzzy logic and artificial intelligence (AI) in financial analysis from 1990 to 2023. Utilizing the bibliometrix package in RStudio and data from the Web of Science, we focused on identifying mathematical models and the evolving role of fuzzy information granulation in this domain. The research addres...

This study describes a comprehensive bibliometric analysis of shadow banking and financial contagion dynamics from 1996 to 2022. Through a holistic approach, our study focuses on quantifying the impact and uncovering significant trends in scientific research related to these interconnected fields. Using advanced bibliometric methods, we explored th...

This study explored the complex interplay and potential risk of financial contagion across major financial indices, focusing on the Bucharest Exchange Trading Investment Funds Index (BET-FI), along with global indices like the S&P 500, Nasdaq Composite (IXIC), and Dow Jones Industrial Average (DJIA). Our analysis covered an extensive period from 20...

Fake news is an explosive subject, being undoubtedly among the most controversial and difficult challenges facing society in the present-day environment of technology and information, which greatly affects the individuals who are vulnerable and easily influenced, shaping their decisions, actions, and even beliefs. In the course of discussing the gr...

The proliferation of misinformation presents a significant challenge in today’s information landscape, impacting various aspects of society. While misinformation is often confused with terms like disinformation and fake news, it is crucial to distinguish that misinformation involves, in mostcases, inaccurate information without the intent to cause...

The concept of sustainable development appeared as a response to the attempt to improve the quality of human life, simultaneously with the preservation of the environment. For this reason, two of the 17 Sustainable Development Goals are dedicated to life below water (SDG14) and on land (SDG15). In the course of this research, comprehensive informat...

This research provides a comprehensive analysis of the dynamic interplay between agent-based modeling (ABM) and artificial intelligence (AI) through a meticulous bibliometric study. This study reveals a substantial increase in scholarly interest, particularly post-2006, peaking in 2021 and 2022, indicating a contemporary surge in research on the sy...

Although the COVID-19 pandemic has mostly ended, there may be future situations (e.g. future pandemics) in which infectious disease spread on airplanes should be minimized. The COVID-19 pandemic led to social distancing as a means of enhancing passenger safety. Methods were developed to separate homogenous passengers from each other on airplanes an...

This paper presents a bibliometric analysis focused on the research domain of school dropout. Over the course of time, nations across the globe have come to acknowledge the significance of this phenomenon and have made concerted efforts to gain deeper insights into it, with the aim of mitigating the associated risks. Consequently, it has become evi...

The increased price of energy and the limited resources of the planet have increased the worldwide attention to renewable energy resources. The purpose of this paper is to present the European context regarding these renewable sources. In addition, the evolution over time of some indicators relevant to this field is described for better shaping the...

In recent decades, the fight against climate change and the commitment to reduce greenhouse gases have shed a light on the production of energy from renewable sources, in particular those derived from solar energy. This has required the involvement of all stakeholders (producers, but also energy operators, authorities, distributors, and final consu...

The global impact of the COVID-19 pandemic has been profound, placing significant challenges upon healthcare systems and the world economy. The pervasive presence of illness, uncertainty, and fear has markedly diminished overall life satisfaction. Consequently, sentiment analysis has gained substantial traction among scholars seeking to unravel the...

This paper presents a bibliometric analysis within the research domain dedicated to the utilization of agent-based modeling (ABM) in the field of transportation. By employing specific keywords related to both agent-based modeling and transportation, we have identified and extracted 1016 scholarly papers from the ISI Web of Science database, spannin...

In recent years, neutrosophic theory has garnered increasing attention within scholarly circles due to its applicability in various domains. Within these domains, the field of decision-making has derived significant advantages from the progressions in neutrosophic theory. Notably, neutrosophic theory has made substantial contributions by advancing...

In a globally interconnected economy marked by volatility, this study employs the Autoregressive Distributed Lag (ARDL) model to examine financial contagion’s impact on Romania’s financial stability. It investigates both conventional and unconventional channels through which financial contagion is transmitted, emphasizing its sensitivity to factors...

In this study, we undertake a comprehensive bibliometric analysis of the cybernetics research field. We compile a dataset of 4856 papers from the ISI Web of Science database spanning 1975–2022, employing keywords related to cybernetics. Our findings reveal an annual growth rate of 7.56% in cybernetics research over this period, indicating sustained...

Purpose The Grey System Theory (GST) is an emerging area of research within artificial intelligence. Since its founding in 1982, it has seen a lot of multidisciplinary applications. In just a short period, it has garnered some considerable strengths. Based on the 1987–2021 data collected from the Web of Science (WoS), the current study reports the...

The Circular Economy represents an essential strategy for a more sustainable future, both for the environment and for the economy and society. The main purpose of this article is to conduct a holistic analysis that highlights Romania’s perspectives in the transition and integration process towards the Circular Economy. In this research, we will use...

Social media has become a preeminent medium of communication during the early 21st century, facilitating dialogue between the political sphere, businesses, scientific experts, and everyday people. Researchers in the social sciences are focusing their attention on social media as a central site of social discourse, but such approaches are hampered b...

Agent-based modeling (ABM) has emerged as a distinct and innovative paradigm offering an alternative to conventional modeling techniques which often rely on equation-based representations to depict specific events or phenomena [...]

The objectives of sustainable development aim to find a balance between economic, social, and ecological plans through which to reduce the use of the planet’s resources without somehow affecting human well-being. As we have already entered the second half of the time allotted to achieve these goals, it is necessary to note what progress has been ma...

Given the high amount of information available on social media, the paper explores the degree of vaccine hesitancy expressed in English tweets posted worldwide during two different one-month periods of time following the announcement regarding the discovery of new and highly contagious variants of COVID-19—Delta and Omicron. A total of 5,305,802 CO...

The uncertainty of the environment, the complexity of economic systems, both at the national and global economy levels, and the digital age and artificial intelligence draw attention to the existence or appearance of systemic, disruptive phenomena that can appear and propagate in different forms, producing effects that can turn into economic crises...

The airplane boarding problem is discussed in this chapter by taking into account both the transport cost reduction and the risk assessment generated by the COVID-19 pandemic, while accounting for the passengers’ comfort while boarding. For addressing the airplane boarding problem, an agent-based approach is created and used for simulating the pass...

In this chapter, a basic presentation of the project management is made from the perspective of the operations research, having the purpose of familiarizing the reader with the terms used and with the current approach in determining the time needed for completing a complex project. Due to its numerous advantages, it has been observed that the grey...

This chapter is dedicated to the application of the grey relational analysis in the public opinion mining. Due to the complex economic and social situation the entire mankind has passed in the last few years since the occurrence of the COVID-19 pandemics, the chapter features an application on the public opinion assessment in connection with the CO...

Over the years, the grey systems theory has succeeded in providing to the research community a framework for dealing with partially known information through a series of specific methods. Besides the advancements made in various research areas, the grey systems theory has been rapidly adopted in the economic and social sciences area for solving bot...

Supplier selection is a multi-attribute decision-making (MADM) problem largely discussed in the scientific literature. The supplier selection problem has evolved from a commodity-based operational decision approach—which considers mainly aspects related to economic issues, described through a series of strategic performance measures (such as cost,...

The present chapter has been dedicated to the hybrid approaches in the scientific literature in which grey systems theory has been used along with other intelligent artificial techniques for modeling different situations related to the economics and social sciences field. In terms of grey hybridization, four main theories have been chosen, namely f...

The issues discussed under the programming umbrella are various and have attracted, over time, the interest of the researchers from all around the world. In the case of linear programming, both the objective function and the constraint conditions are linear functions. With the arise and the development of the grey systems theory, the use of the gre...

Various sentiment lexicons have been created over time for helping researchers and other interested parties in better determining the sentiments associated with a message or a text. The sentiment lexicons contain words and sequences of words (called tokens) pre-classified in positive, negative and neutral categories. Some of the lexicons provide ev...

The author’s first name in chapter “Companies Image Evaluation Using Social Media and Sentiment Analysis” was incorrect in the initially published version. This is now corrected and is given as Liviu-Adrian Cotfas.

The economic systems are basically grey systems due to their components and to their interactions which enable the occurrence of uncertainty. First, the human component plays an important role as a consequence of its usually unpredictable and sometimes irrational behavior, a situation strictly related to the way the humans are thinking and acting....

Recent studies have shown that based on informal communication, made from one user to another, certain opinions regarding the activity of a company can be formed, with long-term influence on consumers, perception on its image. By focusing on the Millennial generation, this research presents its main characteristics and examines the consumer’s behav...

This paper aims to model the covariance of financial assets using neutrosophic fuzzy numbers. Two main concepts are discussed and used, namely the neutrosophic covariance of the financial assets and the independent neutrosophic portfolios. In terms of methodology, a three-step approach is proposed with the purpose of identifying the independent neu...

The coronavirus pandemic has undoubtedly been one of the major recent events that have affected our society at the global level. During this period, unprecedented measures have been imposed worldwide by authorities in an effort to contain the spread of the disease. These measures have led to a worldwide debate among the public, occurring not least...

One of the current problems facing humanity concerns the lack of balance between the skills of young people and the needs of the market. Quality Education is debated in the second Sustainable Development Goal (SDG) and proposes equal and affordable access to education, as well as increasing the number of young people and adults who possess relevant...

Time is crucial in public buildings evacuation during an emergency as it can have a direct impact on the number of people injured, or on the gravity of the injuries. Designing emergency evacuation plans or proposing various alternatives to public buildings’ design, by considering the dynamic behavior of pedestrians, has the potential to reduce the...

The coronavirus pandemic has forced authorities to take unprecedented measures, including the temporary closure of business and the instauration of national and regional lockdowns. The educational system, one of the key components of the society, has also been disrupted, as many schools and universities have moved their courses online for prolonged...

The cruise ship industry has faced in recent years a continuous increase in the number of passengers, reaching 28.5 million passengers in 2018, 60.11% more than in 2009. In this context, the research literature has acknowledged the key role played by the passengers' safety and has considered different aspects when dealing with the ship evacuation p...

While social media platforms can serve as public discussion forums of great benefit to democratic debate, they can also become a source of disinformation, bullying, hate speech, and a setting for fruitless polemics. In extreme cases, discourse originating in or propagated through social media can stoke political polarization and partisanship, with...

Many airlines instituted social distancing practices to keep passengers safe during the pandemic. The practices include keeping the middle seats empty, reducing the number of passengers taking an apron bus from the terminal to the airplane, and prescribing that passengers maintain 1 m social distance of separation from other passengers in the aisle...

Vaccination has been proposed as one of the most effective methods to combat the COVID-19 pandemic. Since the day the first vaccine, with an efficiency of more than 90%, was announced, the entire vaccination process and its possible consequences in large populations have generated a series of discussions on social media. Whereas the opinions trigge...

The integration of renewable energy sources into the energy system requires both new investment in network infrastructures, and the introduction of new models of energy management. In this framework, new structures of collaborations were born: the aggregator is one of them. It involves grouping different players of the power system, acting, however...

The COVID-19 pandemic has produced changes in the entire aviation industry, including adjustments by airlines to keep the middle seats of airplanes empty to reduce the risk of disease spread. In this context, the scientific literature has introduced new metrics related to passengers’ health when comparing airplane boarding methods in addition to th...

The paper explores the usage of agent-based modeling in the context of large event halls evacuation during music festivals and cultural events. An agent-based model is created in NetLogo 6.2.2 for better representing the human behavior when involved in such situations. A series of characteristics have been set for the agents in order to preserve th...

We provide a mixed-integer programming model (MIP) to assign airplane passengers to seats while preserving two types of social distancing: the distance from the passengers’ seats to the aisle and the distance among groups of passengers who are not travelling together. The method assigns passengers travelling within a family group to seats near othe...

Wearing a mask by the general public has been a controversial issue from the beginning of the COVID-19 pandemic as the public authorities have had mixed messages, either advising people not to wear masks if uninfected, to wear as a protective measure, to wear them only when inside a building/room with insufficient air flow or to wear them in all th...

The occurrence of the novel coronavirus has changed a series of aspects related to people's everyday life, the negative effects being felt all around the world. In this context, the production of a vaccine in a short period of time has been of great importance. On the other hand, obtaining a vaccine in such a short time has increased vaccine hesita...

Airlines and researchers have been working to reduce the health risk to passengers from the novel coronavirus SARS-CoV2. Recent literature indicates that the Reverse Pyramid boarding method provides a lower health risk than other boarding methods using a limited number of boarding groups, while keeping the middle seats empty. With a primary objecti...

The purpose of this paper was to model, with the help of neutrosophic fuzzy numbers, the optimal financial asset portfolios, offering additional information to those investing in the capital market. The optimal neutrosophic portfolios are those categories of portfolios consisting of two or more financial assets, modeled using neutrosophic triangula...