Dimitrios K. Nasiopoulos

• Professor
• Professor (Assistant) at Agricultural University of Athens

Large language models (LLMs) have demonstrated remarkable capabilities in various natural language processing (NLP) tasks, but their effectiveness in real-world consumer complaint classification without fine-tuning remains uncertain. Zero-shot classification offers a promising solution by enabling models to categorize consumer complaints without pr...

In the rapidly evolving landscape of natural language processing (NLP) and sentiment analysis, improving the accuracy and efficiency of sentiment classification models is crucial. This paper investigates the performance of two advanced models, the Large Language Model (LLM) LLaMA model and NLP BERT model, in the context of airline review sentiment...

Large language models (LLMs) have demonstrated remarkable capabilities in various natural language processing (NLP) tasks, but their effectiveness in real-world consumer complaint classification without fine-tuning remains uncertain. Zero-shot classification is particularly challenging in finance, where complaint categories often overlap, requiring...

In an era where fake news detection has become a pressing issue due to its profound impacts on public opinion, democracy, and social trust, accurately identifying and classifying false information is a critical challenge. In this study, the effectiveness is investigated of advanced machine learning models—convolutional neural networks (CNNs), bidir...

In today’s rapidly evolving digital landscape, customer reviews play a crucial role in shaping the reputation and success of hotels. Accurately analyzing and classifying the sentiment of these reviews offers valuable insights into customer satisfaction, enabling businesses to gain a competitive edge. This study undertakes a comparative analysis of...

In an era where misinformation and disinformation have profound impacts on public opinion, democracy, and social trust, accurately identifying and classifying false information is a critical challenge. This study explores the effectiveness of advanced machine learning models—Convolutional Neural Networks (CNN), Bidirectional Encoder Representations...

In today's rapidly evolving digital landscape, customer reviews play a crucial role in shaping the reputation and success of hotels. Accurately analyzing and classifying the sentiment of these reviews offers valuable insights into customer satisfaction, enabling businesses to gain a competitive edge. This study undertakes a comparative analysis bet...

Cryptocurrencies are becoming increasingly prominent in financial investments, with more investors diversifying their portfolios and individuals drawn to their ease of use and decentralized financial opportunities. However, this accessibility also brings significant risks and rewards, often influenced by news and the sentiments of crypto investors,...

Spam emails and phishing attacks continue to pose significant challenges to email users worldwide, necessitating advanced techniques for their efficient detection and classification. In this paper, we address the persistent challenges of spam emails and phishing attacks by introducing a cutting-edge approach to email filtering. Our methodology revo...

This paper presents a pioneering methodology for refining product recommender systems, introducing a synergistic integration of unsupervised models—K-means clustering, content-based filtering (CBF), and hierarchical clustering—with the cutting-edge GPT-4 large language model (LLM). Its innovation lies in utilizing GPT-4 for model evaluation, harnes...

The problem of long-haul flight has not yet been adequately solved with the use of unmanned aerial vehicles (UAVs). Conventional engines are usually at a disadvantage due to limited capacity for non-renewable fuels, but in theory, a renewable energy source would allow self-sustaining flight. However, most official research to date focuses on the de...

As renewable energy production and grid-connected inverter ports have almost no damping and inertia, the renewable energy generation system has low inertia and weak damping characteristics (Yingjie et al., IEEE Trans Power Syst, 2018). In terms of absorbed power or output power of the BESS, the battery power station can stabilize the unbalanced pow...

The time that an unmanned aerial vehicle can fly is called endurance. Endurance for an unmanned aerial vehicle can be described as the total time required to complete the flight. For a fixed-wing or quadrotor electric aircraft (four propellers), this is directly related to the capacity of the battery and the amount of current generated by the engin...

Nowadays, the increased access of users to social media and smartphones, as well as the interconnection of users through social networks, has significantly increased the circulation of ideas, news, and information. The slightest movement on the Internet (posting photos, searching the Internet, and posting comments) produces the so-called digital tr...

The global drone market is growing every year. The number of applications is increasing from search, rescue, security, and surveillance to science, research, and unmanned cargo systems. A limiting factor for drone operation is that for energy storage, a battery is usually used and consequently the duration of the flight is affected. However, there...

In recent years, there has been an increase in reporting on research in the field of eco-innovation, “green” innovation, or innovation in the field of sustainable development in digital marketing. To meet the challenge of sustainable development, companies need to balance economic, social and environmental performance.

The rapid changes that are taking place in the IT sector bring a series of changes that affect commercial companies. Businesses are required to meet the demands of the modern environment which is constantly changing and in which the competition is constantly escalating. E-commerce is a modern method of promoting products and services with rapid dev...

Drones are increasingly being used for a variety of purposes, such as monitoring forests and locating threatened individuals or objects in a large area. For countries where there is a huge border airport that becomes difficult to track, where even manned aircraft tracking ends up being very costly either in terms of fuel or aircraft maintenance, th...

Globalization has gotten increasingly intense in recent years, necessitating accurate forecasting. Traditional supply chains have evolved into transnational networks that grow with time, becoming more vulnerable. These dangers have the potential to disrupt the flow of goods or several planned actions. For this reason, increased resilience against v...

In recent years, the concept of sustainability has gained significant attention across various industries. Consumers are increasingly concerned about the environmental impact of the products they purchase, leading to a growing demand for sustainable options. However, identifying sustainable product features can be a complex and time-consuming task....

The rapidly evolving field of artificial intelligence (AI) continues to witness the introduction of innovative open-source pre-trained models, fostering advancements in various applications. One such model is Llama 2, an open-source pre-trained model released by Meta, which has garnered significant attention among early adopters. In addition to exp...

Recent developments in blockchain technology have enabled the development of wallet applications for storing peoples’ cryptocurrency reserves. Cryptocurrency wallet applications could deploy affiliate marketing processes to increase the visibility of their products. From these affiliate marketing processes, supply chain firms in the air forwarding...

Aiming for the forecasting and predictability of their future development, corporations have developed appropriate strategies as a result of the necessity to optimize the distribution networks of new IT products over time. The necessity of diversifying manufacturing was brought on by the fierce competition between businesses and the sophisticated c...

In recent years, the energy market has seen an increase in small and medium enterprises (SMEs) participating in the sector and providing relevant services to customers. The energy sector SMEs need to acknowledge whether reengineering their marketing strategy by modeling customers’ website behavior could enhance their digital marketing efficiency. W...

From the outset of the war in Ukraine, extensive crises in many sectors of the world economy have occurred, with firms offering services and products both online and through physical stores facing serious problems. These problems are mainly related to higher operational costs and the lack of website visibility. For this research study, centralized...

Digital marketing, especially search engine optimization (SEO), is an integral part of websites today. Airlines in the COVID-19 era have to use every possible means to survive despite the adverse conditions for both entrepreneurship and travel. Many of them have allocated resources and money to develop SEO strategies by applying SEO techniques to t...

Crises are always challenging for banking systems. In the case of COVID-19, centralized payment networks and FinTech companies’ websites have been affected by user behavior globally. As a result, there is ample opportunity for marketing managers and professionals to focus on big data from FinTech websites. This can contribute to a better understand...

The aim of this research work is to analyze the basic principles of reorganization with regard to companies operating in the supply chain. In addition, reference various reorganization methods are analyzed and also, a comparison between them. Regardless of the method used, the basic principles remain the same. Firstly, the reorganization must be ra...

Searching the web is a fundamental process that is performed by every active Internet user on a daily basis (Moreno, Online Information Review 37(4), 564–580, 2013). The subject matters of the search as well as the results have a direct impact on the e-branding that concerns the companies operating in the field of Logistics. Search engines are cons...

Email marketing is one of the most personal and versatile tools for e-branding and when designed properly it provides tremendous influence potential. In recent years, email marketing has been neglected as an e-branding campaign for its design. Unfortunately, an email campaign is very easy to be designed incorrectly. The problem is that the majoriti...

The ways and methods used to restructure companies operating in the field of Logistics vary. The study focuses on companies that follow the “traditional” business model that takes place for many years. The purpose of these changes is to reorganize the Logistics departments with the main purpose of facing each department not independent, but as a wh...

The role of Digital Marketing is confirmed by numerous studies, where the following challenges have been raised: explosion of data, social media, proliferation of channels, and shifting of consumer demographics, which correspond to the developments in the digital market, with the supply chain companies having to adapt to these challenges.

Communication technologies are increasingly interacting in our professional and personal lives. Intense competition and advanced trends for personalized mobile and communication products and their transfer speed have introduced mass adaptability (Massive Customization, MC), which constitutes a competitive requirement for the Development of a Distri...

The aim of this research is to reflect the impact of the Change Management process on supply chain companies. Despite the high failure rate (84%), companies decide to implement this process to achieve their goals. The process of changing management requires very good study and planning by the company’s leadership so as a consequence the smoothest p...

Social media have more influence on e-branding than any other digital way. Furthermore, they have fundamentally changed the impact that advertised products have on the customers/consumers (Sivertzen, Journal of Product & Brand Management, 22(7), 473–483, 2013). The reason of this effect is based on the two-way communication between consumers and lo...

This book highlights interdisciplinary insights, latest research results, and technological trends in Business Intelligence and Modelling in fields such as: Business Intelligence, Business Transformation, Knowledge Dissemination & Implementation, Modeling for Logistics, Business Informatics, Business Model Innovation, Simulation Modelling, E-Busine...

Internet forum is a platform in which its members exchange views and acquire knowledge through dialogue. The interested person has the opportunity to visit the forum of the field that concerns him, in order to exchange views and gain knowledge.By using the forum, businesses benefit greatly. In this way, they promote their products and/or services t...

In this research paper, we will analyze how and why the integration of Social Media into the market and sales with the goal of the business success of IT companies is necessary. Nowadays, there is a substantial shift in power from the recent heavy industries that dominated the business of marketing, public relations, advertising, the media market (...

This research paper analyzes the strategic use of marketing in search engines, aiming at the business success of high technology companies. Search engine marketing (SEM) is a form of online marketing. Businesses in this way promote their website in order to increase their visibility in search engine results and hence in user searches. The SEM is co...

Business Management Strategy (BMS) helps the cultural organizations to become active and entangled with the multicultural society, the global scene of culture and the political scene. The BMS leads the cultural organizations? economic status to a successful level, improves their relationship with the multicultural society and advances mainly their...

Social networks are now a crucial part of today?s way of life. Academic conferences is another chapter, that give people the opportunity to explore new ideas and share them with the scientific world. Blending those two factors together in order to achieve a main purpose, could give a remarkable effect. The purpose of this paper is to analyze the pr...

We live in an era where science and technology are at their peak. Tremendous changes and the basic need of mankind to interact with others, led social relations to follow another path. That path is social media. In the beginning, they were used for communication, but quickly gained reputation in other fields. Because of the number of people using s...

In this paper, there has been an attempt to present the B2C Communication Strategies in Electronic Commerce (e-commerce). The factors of success, as they have emerged from the study of successful e-commerce models until our days, are analyzed. We shall study the interactions between business and customers, by setting variables and by using dynamic...

In order to reach his goal to market a product or service there is need to introduce a competitive advantage which should characterize the product. This competitive advantage through various forms of communication of the company (or of the organization) with the customer, needs to reach with targeted moves into the appropriate target group. The ult...

This paper suggests the management of company resources in order to establish a successful project team. The proposal is being reported after modeling the essential soft skills of a project team, interacting with the negative factors and providing the benefits to the team. Hence, is mentioned what a project manager must do as leader of an effective...

In this research, paper will be highlighted the dominant role that the video games hold nowadays. It is undeniable that as time and technology go by, more and more people spend time playing games on their smartphones. As shown by recent studies, 44% of the game developers are working on a game that will be released on smartphone or tablet (Game Dev...

Internet provides a lot of tools and technologies designed to help people collaborate and communicate with each other. Collaboration tools are a category of tools such as chat, application sharing, videoconferencing and e-mail (Dobre, Seria Matematică - Informatică – Fizică LVIII:51–56, 2006). In additition, online collaboration tools are based on...

A software development process is designated as an aggregation of methods, practices, and techniques that are used to procure and substantiate software and its produced product (Wadhwa and Sharma, Adv Comput Sci Inf Technol 2:370–374, 2015). The majority of agile methods promote teamwork, cooperation, and adjustability through the life cycle of the...

In this research the question that will occupy us is the development of new ideas for IT products, through the social media. Thanks to the social media, every business can interact with its public, thus with its collaborators. One of the most important forms that appear is the Facebook. The Facebook pages present the possibilities with which the de...

Today’s world is characterized with rapid engineering and technological increase where enterprises search to develop competitive vantage based on the extensive use of information and communication technology, a crucial succeeder in today’s competitive market. Information and communication technology, a factor characterized as a foundation and compl...

In this paper, the relationship between software security and piracy rates is been analyzed, by utilizing an information set for three European nations of extreme importance as regarding the 2008 economic crisis, Greece, Germany, and England. Having undergone thorough research and empirical analysis, taking into consideration Monte Carlo simulation...

The last years have seen a rapid increase both of the number of users on social media and particularly on Facebook and also, on the number of different types of applications available for use (Kluemper et al., Research in personnel and human resources management, Emerald Group Publishing Limited, Bingley, 2016). This paper attempts to model and sim...

The current paper aims to introduce a dynamic simulation model of how an information technology business should share its resources in order to hire persons with specific characteristics, suitable and efficient for an effective project team, with the supreme goal to bring to an end a successful information’s technology project. The model is develop...

Mobile commerce (m-commerce) is a rapidly growing industry, which derives from e-commerce, and within the next few years is expected to conquer a great part of the global market share. There are several factors that can play a major role in the success of an m-commerce website. The ones that should be taken most into account can be distinguished in...

In order to reach his goal to market a product or service there is need to introduce a competitive advantage which should characterize the product. This competitive advantage through various forms of communication of the company (or of the organization) with the customer, needs to reach with targeted moves into the appropriate target group. The ult...

Social networks are now a crucial part of today's way of life. Academic conferences is another chapter, that give people the opportunity to explore new ideas and share them with the scientific world. Blending those two factors together in order to achieve a main purpose, could give a remarkable effect. The purpose of this paper is to analyze the pr...

Purpose – The integrated purpose of the libraries’ communication plan in general is to create and accomplish scientific events aiming, first of all, at covering the extensive demand for the scientific conferences. Their primary objective is to raise the prestigious brand name of their organisation, which constitutes the organizing authority. At the...

The paper aims to examine the development of competitive advantage in Facebook for brand awareness. The paper describes a dynamic model of the simulation system associated with the stock of online communication and customer engagement, the increase of users and the geographic connection that social media provide.

Knowledge Management Strategy is an important factor that enables Universities to have a more effective and active role in relation with society, with the international market and with the political scene. It's the key that leads the economy to a successful level and improves the relations between Universities and the society. Under these circumsta...

Businesses from all Information Technology sectors use market segmentation[1] in their product development[2] and strategic planning[3]. Many studies have concluded that market segmentation is considered as the norm of modern marketing. With the rapid development of technology, customer needs are becoming increasingly diverse. These needs can no lo...

This paper describes a dynamic model of the New Product Development (NPD) process. The model has been occurring from best practice noticed in our research conducted at a range of situations. The model contributes to determine and put an IT company's NPD activities into the frame of the overall NPD process[1]. It has been found to be a useful tool f...

The paper aims to examine the development of competitive advantage in Facebook for brand awareness. The paper describes a dynamic model of the simulation system associated with the stock of online communication and customer engagement, the increase of users and the geographic connection that social media provide.

Purpose – The purpose of this research work is to find a methodology for the strategic development of competitive advantage for information technology (IT) companies (Mezger and Violani, 2011). The ultimate aim of this project is to develop a methodological approach on this issue, based on dynamic simulation models (DSM) (Wirahadikusumah and Abraha...

The paper seeks to propose the concept of sustainable enterprise simulation models. The social, environmental and economic models are developed and simulated using iThink in the context of a high technology (high-tech) company. With the rapid growth of Social Networks [, Open source applications are increasingly invading the world of Web. High-tech...

The purpose of this paper is to examine the impact of knowledge [1] creation mode (e.g. goal-driven and goal-free) and organizational culture on knowledge creation and sharing performance in the context of high technology (high-tech) companies [2] with the contribution of Dynamic Simulation Model. Both goal-free and goal-framed creation modes are m...

Strategic leadership of the company includes the strategic management of Information Technology (IT) [1] in the context of business relationships. Companies do not exist in isolation. Multiple constituents make up a relationship network that constitutes the vital resource needed to fulfil the mission of a business.To leverage a company's business r...

Leadership of a company may be the only management concept that receives more attention than a company's strategy lately. But there's little unanimity on what strategic leadership [1] is and how it should best be encountered. Organizational leadership [2] has been defined as an interpersonal process for influencing individuals and groups to achieve...

Recent articles claim that the management Information Systems (IS) [1] function should no longer be faced in its classic role, but in terms of a strategic role for exploiting IS-based competitive advantages. Rooted in such a strategic role perspective, this paper develops a research with the aid of a Dynamic Simulation Model [2] of IS and creates a...

licenses/by-nc-nd/3.0/). Selection and peer-review under responsibility of the 3rd International Conference on Integrated Information. Abstract The rapid spread of the Internet and the growing trend towards research are the leading factors and strong springboards, for the Industry of conference organizations, to proceed with further development. Wi...

ScienceDirect 1877-0428 © 2014 Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/). Selection and peer-review under responsibility of the 3rd International Conference on Integrated Information. Abstract The growing trend towards research constitutes a strong springboard for...

Open Source Web Applications are all those applications that are accessible through the World Wide Web[1], and also their source code is open to anyone who wants to participate in their amendment. The benefits of the World Community from these applications are enormous. The use of open source applications begins already at school. At University it...

Free Software / Open Source Software (FS/OSS) is a tool for the entire academic community. Its role can often prove to be indispensable in the field of Education. May be the perfect example of how research leads to the final tool for use, which is one of the key purposes of Universities. For students, it doesn't just create users, but develops thei...