Emmanouil Stiakakis

• Professor (Assistant) at University of Macedonia

In the era of digital transformation and the inexhaustible march of technology, the debate around the «digital divide» has engulfed the world of science and politics (Ley, 2020). But beyond the broader concept of the digital divide, what deserves to be examined more thoroughly are its consequences in the field of Human Resources (HR) and their effe...

In the rapidly evolving digital environment, organizations face increasing pressure to adapt to technological advancements while ensuring long-term sustainability. This study was motivated by the critical need to understand how human resource (HR) leadership can effectively foster digital skills development to drive economic sustainable development...

This study investigates the impact of various educational and social factors on the digital skills of vocational education and training (VET) students, emphasizing the significance of continuous skill development in the digital age. Utilizing structural equation modeling (SEM), the paper analyzes data from 382 adult VET students in Greece, examinin...

Nowadays, transactions carried out with digital currencies are increasing. Modern societies are asked to respond to growing challenges related to the management of digital currencies in their daily lives. However, due to the lack of digital skills of users, the management of digital currencies hides risks. To the best of our knowledge, the original...

Nowadays, transactions carried out with digital currencies are increasing. Modern societies are asked to respond to growing challenges related to the management of digital currencies in their daily lives. However, due to the lack of digital skills of users, the management of digital currencies hides risks. To the best of our knowledge, the original...

Nowadays, the transactions carried out with digital currencies are increasing. Citizens are asked to respond to growing challenges related to the sustainable management of digital currencies in their daily lives. However, due to the lack of digital skills of users, the sustainable management of digital currencies hides risks. The methodology of thi...

Every company searches, implements, and invests in new, more effective, and more efficient ways to recruit new personnel. They use any methods available, like conducting consecutive interviews, using different kinds of testing environments and programs, searching thoroughly the candidates’ practical and theoretical knowledge, testing hard, soft, an...

Digital competence is a quite complex and evolving concept, difficult to be defined by using a single definition. The European Digital Competence Framework (DigComp) provides a consistent framework to guide cross-country measurements of digital competence. Even though there are many studies on measuring the digital competence level, there is a limi...

The extensive use of Information and Communication Technologies (ICTs), particularly after the advent of the Internet, transforms the world economy and every aspect of life in a severe way. The so-called “digitization” process poses a question, as well as a dilemma concerning the potential opportunities to alleviate poverty. Within this context, th...

The main object of this research focuses on the empirical study of the causal relation among the degree of openness of the economy, the financial and economic growth using a multi-variate autoregressive model VAR. The long-term relation among GDP, the financial development and the degree of openness of the economy are based on the Cointegration tes...

Although the interest of academics and practitioners is focused on concepts, such as digital competence , literacy, and skills, digital intelligence has its own distinct importance. Whilst the former concepts are related to knowledge and learning outcomes, digital intelligence is about the new way of thinking (particularly visible to young people)...

The aim of this study is to provide insights concerning the effects of the ubiquitous digital environment on the way people think and the subsequent need to equip young individuals with the necessary skills. Several studies focus on defining the so-called digital skills, also providing indications that higher cognitive skills are required. However,...

Classical data envelopment analysis models have been applied to extract efficiency when time series data are used. However, these models do not always yield realistic results, especially when the purpose of the study is to identify the peers of the decision making unit (DMU) under investigation. This is due to the fact that apart from the spatial d...

Every company searches, implements, and invests in new, more effective, and more efficient ways to recruit new personnel. They use all the methods available, like conducting consecutive interviews, using different kinds of testing environments and programs, searching thoroughly the candidates' practical and theoretical knowledge, testing hard, soft...

In this paper, a study for Waste Electrical and Electronic Equipment (WEEE) trade is conducted by using graph theory. In specific, exports and imports for UN COMTRADE data code 854810 which corresponds to waste and scrap of prim cell are collected for 175 countries around the world, spanning the period from 2002 to 2014. WEEE trade networks are gen...

Digital currencies are rapidly evolving Internet currencies that have been increasingly attracting academic, governmental, banking, and business interest. This paper aims to present the commercial perspective towards the adoption of digital currencies as a means of daily transactions. Considering digital currencies as a pioneering technological inn...

The increasing penetration of Information and Communication Technologies (ICTs), leveraging by the Internet and mobile initiatives, as well as other emerging technologies, formulate a digital environment, where individuals or groups of people interact. Within this context, this work examines the essential digital skills that people need to acquire...

In previous years, a rapid increase in start-up companies has been recorded in Greece. This is partly ought to the economic recession Greece is undergoing. Start-ups' competitive advantage depends on various factors relating to academia, industry, government, and civil society constituting the quadruple helix innovation framework. This research aim...

Purpose – Mobile recommender systems aim to solve the information overload problem by recommending products or services to users of web services on mobile devices, such as smartphones or tablets, at any given point in time and in any possible location. They utilize recommendation methods, such as collaborative filtering or content-based filtering a...

This study aims at investigating the factors which influence positively or negatively electronic waste (e-waste) rejection rates. E-waste quantities have been calculated based on historical sales data worldwide and lifespan distribution. The methodology, which is adopted in this paper in order to estimate the effect that economic, cultural, and dem...

Social Media (SM) are one of the latest and most typical examples of Information and Communication Technologies (ICTs), which have been widely adopted in the tourism industry at all stages of a trip. The objective of this paper is to investigate the impact of SM on travelers 2.0, as well as their views concerning relevant issues. A survey was condu...

Apart from the technological perspective of security in mobile devices and applications, the economic perspective has been increasingly attracting the academic and business interest. This paper aims to investigate the perceptions of mobile users about the economic importance of security breaches. Instead of considering mobile users as a whole, they...

One of the major challenges in measuring efficiency in terms of resources and outcomes is the assessment of the evolution of units over time. Although Data Envelopment Analysis (DEA) has been applied for time series datasets, DEA models, by construction, form the reference set for inefficient units (lambda values) based on their distance from the e...

Mobile recommender systems aim to solve the information overload problem found by recommending products or services to users of mobile smartphones or tables at any given point in time and in any possible location. Mobile recommender systems are designed for the specific goal of mobile rec-ommendations, such as mobile commerce or tourism and are por...

Mobile recommender systems aim to solve the information overload problem found by recommending products or services to users of mobile smartphones or tables at any given point in time and in any possible location. Mobile recommender systems are designed for the specific goal of mobile recommendations, such as mobile commerce or tourism and are port...

An industry that is under pressure to radically improve its efficiency performance is healthcare. In this paper, we examine the impact of e-health systems upon hospital efficiency. According to our methodology and since e-health has a broad meaning, an e-health system is defined as a set of at least the following practices: (i) the use of a hospita...

As in any academic discipline, the evaluation of proposed methodologies and techniques is of vital importance for assessing the validity of novel ideas or findings in Software Engineering. Over the years, a large number of evaluation approaches have been employed, some of them drawn from other domains and other particularly developed for the needs...

As in any academic discipline, the evaluation of proposed methodologies and techniques is of vital importance for assessing the validity of novel ideas or findings in Software Engineering. Over the years, a large number of evaluation approaches have been employed, some of them drawn from other domains and other particularly developed for the needs...

Several operations research methods and techniques have been applied to solve a diversity of problems over the decades. Highly interdisciplinary, operations research involves researchers and practitioners across the fields of statistics, mathematics, economics, engineering, computer science, and information technology. This special volume of the An...

This paper studies the relationship between foreign direct investments, exports, and economic growth in Croatia using annual time series data for the period 1994-2012. Several econometric models are applied including the bounds testing (ARDL) approach and the ECM-ARDL model. The results confirm a bidirectional long run and short run causal relation...

Even though electronic service (e-service) quality has been analyzed to a great extent, mobile service (m-service) quality still requires further investigation. The hierarchical and multi-criteria structure, which is adopted in this work, appears to be the most appropriate approach to define m-service quality. In the proposed theoretical framework,...

This study develops and presents a proposed framework for the measurement of mobile government (m-government) services. The measurement framework consists of: (i) identification/categorisation of m-government services; (ii) sophistication stages of these services; and (iii) indicators to evaluate their progress. With respect to the methodological a...

Measuring computer network efficiency is of great importance for a network manager. When a detailed picture of the current state of the network is available, we can use analytical and simulated-based methods. Instead, it is more difficult to measure network efficiency, when the details of network topologies and internal characteristics are not avai...

The generation and accumulation of waste of electrical and electronic equipment (WEEE) is growing fast, becoming one of the most complex waste streams the modern world faces. The effective and efficient management of this waste stream raises the interest of the global scientific and business community. The purpose of this paper is to analyze the fl...

The generation and accumulation of obsolete electrical and electronic equipment is growing fast, becoming one of the most complex waste streams the modern world face. It is clear that the e-waste environmental, economical, and social consequences, that stakeholders in both developed and developing countries should deal with, need a proper e-waste m...

"Green ICT" constitutes a new term in Informatics that describes environmentally sustainable ICT and the use of ICTs in the interest of the natural environment aiming to sustainable development. It encompasses innovative ICT tools, e- and m-services, and smart technologies in combination with green practices and green behaviour either for the ICT i...

Data Envelopment Analysis (DEA) is a non-parametric technique which involves the use of linear programming methods to measure the efficiency of a homogenous set of units. These units are known as Decision Making Units (DMUs) and defined by multiple input and output data. Efficiencies are measured relative to a piece-wise surface (efficient frontier...

This paper continues previous work of the authors concerning the identification and statistical analysis of the quality dimensions in mobile services (m-services). In this work, the structure of mservice quality into dimensions and criteria, which these dimensions are further analyzed into, is examined and grounded through an empirical analysis. Th...

Research and practice in software engineering have led to an extensive set of metrics for the evaluation of almost every aspect of software development. One of the major challenges for any quality model is the combination of metrics, which are complementary to each other. In this paper, we propose the use of Data Envelopment Analysis (DEA), a non‐p...

This article presents a case study on how data envelopment analysis DEA and analytic hierarchy process AHP could be combined to produce priority rankings for a set of companies. The shortcomings of each method, when exclusively used to deal with multiple criteria decision analysis MCDA problems, are also analysed. The dataset of this study, arising...

In our study, we present four different approaches on the subject that are connected more or less to each other, giving more attention on outsourcing security issues. A case study for the use of outsourced services is also presented using empirical data from an insurance company. This work concludes with an overview of our research, its limitations...

This paper deals with the change of business models (BMs) due to Information and Communication Technologies (ICTs). Recent advances in ICTs have caused BM change to be indispensable in all businesses. This is even more essential in the industries, where there is a significant diffusion of ICTs, such as the entertainment and gaming industry. In the...

Library software is generally believed to be well-structured and follows certain design guidelines due to the need of continuous evolution and stability of the respective APIs. We perform an empirical study to investigate whether the design of open-source library software is actually superior to that of application software. By analyzing certain de...

The aim of this paper is to identify the dimensions of mobile service (m-service) quality. Based on the literature review and intervening to specific theoretical frameworks according to some critical characteristics of the mobile setting (security, personalization, etc.), a new hierarchical and multidimensional model is proposed. This model is vali...

In this research we attempt to study empirically the casual relation among the degree of openness of the economy, the financial and economic growth using a multi-variate autoregressive model VAR. The Cointegration test results define the long-term relation among GDP, the financial development and the degree of openness of the economy.

The main object of this research focuses on the empirical study of the causal relation among the degree of openness of the economy, the financial and economic growth using a multi-variate autoregressive model VAR. The long-term relation among GDP, the financial development and the degree of openness of the economy are based on the Cointegration tes...

This paper provides a measurement framework for mobile government (m-government) services adapted from the electronic government (e-government) environment. The measurement framework comprises the identification / categorization of m-government services, the sophistication stages of a service and the indicators used to evaluate the progress of thes...

The proposed research focuses on the food production industry. More specifically, we are interested in evaluating the performance of this industry at firm-level. This will provide us the possibility to identify high performing firms, use them as reference units and analyze their common policies and characteristics. Since this study deals with evalu...

The novelty of our approach is that we are implementing a well-known efficiency measurement method, used in economic settings, to assess network efficiency. This method is Data Envelopment Analysis (DEA), which is used to measure and compare the relative efficiency of a number of units with multiple input and output items. A sample of 25 universiti...

The proposed research focuses on the food production industry. More specifically, we are interested in evaluating the performance of this industry at firm-level. This will provide us the possibility to identify high performing firms, use them as reference units and analyze their common policies and characteristics. Since this study deals with evalu...

The aim of this paper is to shed light on the debate concerning the impact of environmental practices on firms’ efficiency. It focuses on two of the most representative sectors of information and communication technologies’ industry, i.e. computer hardware and telecommunications equipment. The Data Envelopment Analysis (DEA) method was chosen to me...

The digital divide is nowadays evolving to digital inequality, i.e., the socio-economic disparities inside the 'online population'. This paper examines two main dimensions of the digital inequality, namely 'skills' and 'autonomy' of Internet users. The level of formal education was selected as a representative variable of the skill dimension, as we...

The possible interactions among tourism organizations, their customers and other organizations are considered in this article. Based on these interactions, three drivers of an integrated e-business strategy in the tourism sector are suggested: (1) customizing tourist products, personalizing services and supporting mobile services, (2) sharing touri...

Purpose This study aims to identify the similarities and differences between the perspectives of providers and customers regarding the important dimensions and attributes of e‐service quality (e‐SQ). Design/methodology/approach Ten criteria are proposed for assessment of e‐SQ in both business‐to‐business (B2B) and business‐to‐consumer (B2C) transa...

User considerations are the major factor for the proliferation and increased acceptance of mobile commerce applications. Therefore, mobile service quality is influenced by the service provider's awareness and readiness to fulfill user expectations. This paper suggests an approach for assessing the qualitative parameters that characterize electronic...

CRM systems have been increasingly adopted by progressive companies over the past decade. Moreover, a lot of research has been conducted worldwide in this area. Nevertheless, a number of issues related to CRM have not been adequately researched. Such an issue refers to the strategic dimensions of CRM and more particularly to aspects of CRM related...

QUALITY ASSESSMENT OF ELECTRONIC BUSINESS TRANSACTIONS B2B AND B2C: AN EMPIRICAL STUDY IN COMPANIES OF NORTHERN GREECE The electronic service quality assessment along with the main quality factors in the area of electronic commerce, are reported herein. In particular, the quality assessment of electronic business transactions B2B and B2C when the a...