Dimitrios Tsiotas

Dimitrios Tsiotas
Agricultural University of Athens · Regional and Economic Development

PhD, MSc Eng, MSc, BSc Eng, BSc
Dept. of Regional and Economic Development, Agricultural University of Athens

About

135
Publications
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Introduction
Dimitrios Tsiotas (Ph.D.) Dept. of Regional and Economic Development at Agricultural Univ. of Athens. Co-Editor Spatial Economic Analysis, Member of the Editorial Board of the J. Regional Science Inquiry (RSIJ), Theoretical and Empirical Researches in Urban Management (TERUM) and Management Research and Practice (MRP). Research Interests: Regional Science, Regional Economics, Network Science, Transportation Networks, and Statistical Mechanics.

Publications

Publications (135)
Article
Full-text available
The scale-free (SF) property is a major concept in complex networks, and it is based on the definition that an SF network has a degree distribution that follows a power-law (PL) pattern. This paper highlights that not all networks with a PL degree distribution arise through a Barabási−Albert (BA) preferential attachment growth process, a fact that,...
Article
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Aiming at serving the interdisciplinary demand in network science, this paper introduces a new concept for complex networks, named network stiffness, which is extracted from structural engineering by assuming that a complex network behaves similarly with a structured framework. This analogy allows interpreting that a complex network can resist agai...
Article
Full-text available
The fitness model was introduced in the literature to expand the Barabasi-Albert model’s generative mechanism, which produces scale-free networks under the control of degree. However, the fitness model has not yet been studied in a comprehensive context because most models are built on invariant fitness as the network grows and time-dynamics mainly...
Article
(https://authors.elsevier.com/a/1c7uo_GqhFlj7w) Network science has provided new ways and effective methods in the modeling of communication systems. According to this discipline, systems of economic and spatial interaction are considered as spatial networks and are modeled into graphs. This approach allows studying transportation networks and othe...
Article
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This paper examines how spatial distance affects network topology, on empirical data concerning the Global Container Shipping Network (GCSN). The GCSN decomposes into 32 multiplex layers defined at several spatial levels by successively removing connections of smaller distances. This multilayer decomposition approach allows studying the topological...
Article
Full-text available
According to growth poles theory, the areas lacking critical sizes to develop polycentric structures are restricted to the development of structures of special configuration. In Greece, the development of growth poles is restricted to the emergence of “urban dipoles” and “tripoles”, which are often used in the literature within a not well defined c...
Preprint
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The study and measurement of economic resilience is ruled by high level of complexity related to the diverse structure, functionality, spatiality, and dynamics describing economic systems. Towards serving the demand of integration, this paper develops a three-dimensional index, capturing engineering, ecological, and evolutionary aspects of economic...
Article
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This paper studies the cultural landscape in the prefecture of Attica, Greece, within the context of network science. Tourism is a global and complex phenomenon with a considerable effect on space. Among its diverse forms, cultural tourism stands out, since people often travel to explore different cultures and civilizations. The engagement of diffe...
Article
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This paper studies the resilience of the agricultural sector compared to eight other sectors of the Greek economy. The analysis is based on a multilevel methodological framework aiming to integrate equilibrium and evolutionary approaches by incorporating temporal (recovery and adaptability), geographical (regional resilience), and sectorial (indust...
Article
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The worldwide spread of the COVID-19 pandemic is a complex and multivariate process differentiated across countries, and geographical distance is acceptable as a critical determinant of the uneven spreading. Although social connectivity is a defining condition for virus transmission, the network paradigm in the study of the COVID-19 spatio-temporal...
Article
Within the context of the growth poles theory, the areas that lack critical sizes, instead of polycentric structures, develop restricted urban “dipoles” and “tripoles” that are often not studied in the literature within a well-defined context. This paper aims to conceptualize these peculiar urban structures more deeply. It configures a methodologic...
Article
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With the advent of the first pandemic wave of Severe Acute Respiratory Syndrome Coro-navirus-2 (SARS-CoV-2), the question arises as to whether the spread of the virus will be controlled by the application of preventive measures or will follow a different course, regardless of the pattern of spread already recorded. These conditions caused by the un...
Article
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This paper proposes a new method for converting a time-series into a weighted graph (complex network), which builds on electrostatics in physics. The proposed method conceptualizes a time-series as a series of stationary, electrically charged particles, on which Coulomb-like forces can be computed. This allows generating electrostatic-like graphs a...
Chapter
Tourism seasonality is a major issue for regional and tourism development because it concerns the uneven distribution of tourism demand that tourism destinations have throughout the year. This phenomenon is complex and is related to sustainable tourism development to the extent that it concerns very resource-intensive tourism activities during the...
Article
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Within the context that tourism-seasonality is a composite phenomenon described by temporal, geographical, and socio-economic aspects, this article develops a multilevel method for studying time patterns of tourism-seasonality in conjunction with its spatial dimension and socio-economic dimension. The study aims to classify the temporal patterns of...
Article
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Tourism seasonality is a complex phenomenon ranked as one of the most important and timeless issues for regional and tourism development. This paper builds on binary logistic regression to examine the determinants of tourism seasonality. The proposed method classifies the tourism seasonality of the Greek prefectures into two groups (high seasonalit...
Preprint
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Using network analysis, this paper develops a multidimensional methodological framework for understanding the uneven (cross-country) spread of COVID-19 in the context of the global interconnected economy. The globally interconnected system of tourism mobility is modeled as a complex network, where two main stages in the temporal spread of COVID-19...
Cover Page
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Regional Science Inquiry, Vol. XII, (2), 2020, Editorial Note
Presentation
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Maritime Networks, Spatial structures and time dynamics, Edited by Cesar Ducruet, published by Routledge
Article
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Tourism seasonality is a complex phenomenon incorporating a temporal, a spatial, and a socioeconomic (ontological) dimension. This paper builds on principal component analysis (PCA) to provide an integrated methodological framework for studying all three dimensions of tourism seasonality. The proposed method classifies the seasonal patterns of tour...
Presentation
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The Geography of Transport Systems, Fifth Edition, by Jean-Paul Rodrigue, published by Routledge
Article
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This paper proposes a method for examining chaotic structures in semiconductor or alloy voltage oscillation time-series, and focuses on the case of the TlInTe2 semiconductor. The available voltage time-series are characterized by instabilities in negative differential resistance in the current-voltage characteristic region, and are primarily chaoti...
Preprint
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The global crisis caused by the COVID-19 pandemic, in conjunction with the economic consequences and the collapse of health systems, has raised serious concerns in Europe, which is the most affected continent by the pandemic since it recorded 2,388,694 cases and 190,091 deaths (39.6% of the worldwide total), of which 71.7% (136,238) are in the Unit...
Preprint
Full-text available
This paper proposes a new method for converting a time-series into a weighted graph (complex network), which builds on the electrostatic conceptualization originating from physics. The proposed method conceptualizes a time-series as a series of stationary, electrically charged particles, on which Coulomb-like forces can be computed. This allows gen...
Article
Full-text available
This paper studies the interrelation between the topology of spatial networks and their geographic and socioeconomic framework, based on empirical data extracted from the interregional road network in Greece (GRN), aiming to interpret how this road network serves and promotes the regional development. The study conceptualizes network topology as th...
Article
Full-text available
Within the complex framework of anti-COVID-19 health management, where the criteria of diagnostic testing, the availability of public-health resources and services, and the applied anti-COVID-19 policies vary between countries, the reliability and accuracy in the modeling of temporal spread can prove to be effective in the worldwide fight against t...
Article
Full-text available
Within the context of Greece promising a success story in the fight against the disease, this paper proposes a novel method for studying the evolution of the Greek COVID-19 infection curve in relation to the anti-COVID-19 policies applied to control the pandemic. Based on the ongoing spread of COVID-19 and the insufficient data for applying classic...
Article
Full-text available
After a long period of growth, the Greek economy in 2008 tipped into recession, which lasted at the period 2008-2018 and still affects the economic recovery of the country, which appeared relatively slow due to the magnitude or the characteristics of the economic problem and the unsuccessful strategies adopted and implemented. This paper studies th...
Article
Full-text available
Within the complex framework of anti-COVID-19 health management, where the criteria of diagnostic testing, the availability of public-health resources and services, and the applied anti-COVID-19 policies vary between countries, the reliability and the accuracy in the modeling of temporal spread can be proven effective in the worldwide fight against...
Preprint
Full-text available
Within the complex framework of anti-COVID-19 health management, where the criteria of diagnostic testing, the availability of public-health resources and services, and the applied anti-COVID-19 policies vary between countries, the reliability and the accuracy in the modeling of temporal spread can be proven effective in the worldwide fight against...
Preprint
Full-text available
Within the context that Greece promises a success story in the fight against the disease, this paper proposes a novel method to study the evolution of the Greek COVID-19 infection-curve in relation to the anti-COVID-19 policies applied to control the pandemic. Based on the ongoing spreading of COVID-19 and the insufficient data for applying classic...
Preprint
Full-text available
This article studies the interregional Greek road network (GRN) by applying complex network analysis (CNA) and an empirical approach. The study aims to extract the socioeconomic information immanent to the GRN's topology and to interpret the way in which this road network serves and promotes the regional development. The analysis shows that the top...
Preprint
Full-text available
This article attempts to highlight the importance that transportation has in the economic development of Greece and in particular the importance of the transportation infrastructure and transportation networks, which suggest a fixed structured capital covering the total of the country. For this purpose, longitudinal and cross-sectoral statistical d...
Preprint
Full-text available
This article studies the Greek interregional commuting network (GRN) by using measures and methods of complex network analysis and empirical techniques. The study aims to detect structural characteristics of the commuting phenomenon, which are configured by the functionality of the land transport infrastructures, and to interpret how this network s...
Chapter
The winery in Greece has an ascendant course and the development and modernization of the wine-growing units and vineyards helps to attract wine tourists who want to taste and wander in the vineyards and in the Greek nature. The promotion and development of wine tourism and the wider acquaintance of tourists and consumers with traditional Greek and...
Chapter
The hotel market operates in a particular competitive environment. In this context it is necessary for the tourism enterprises through the Human Resources Department to identify and use the appropriate staff to achieve their goals. The Human Resources management of the hotels has as its main functions the staffing, education, evaluation, motivation...
Chapter
Organizational culture and business philosophy have been shown to affect the performance of an organization. It is imperative for executives to know the organizational culture of the business in which they work to develop the corresponding strategic goals that will improve the performance of the hotel business and give it a competitive advantage ov...
Article
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Transport infrastructures are a major drive for achieving economic development at all geographical scales, and particularly at the regional and local level, at which the units of the spatial economic systems are usually configured. In the current literature, a great number of studies have dealt with the relationship between transportation and econo...
Article
This paper examines empirically the utility of size-distribution analysis in the study of urban systems, on data referring to every urban settlement recorded in 2011 national census of Greece. The study lowers the scale of the size-distribution analysis to the regional, instead of the national level, where is commonly being applied, examining two a...
Preprint
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Technological developments worldwide are contributing to the improvement of transport infrastructures and they are helping to reduce the overall transport costs. At the same time, such developments along with the reduction in transport costs are affecting the spatial interdependence between the regions and countries, a fact inducing significant eff...
Preprint
Network Science is an emerging discipline using the network paradigm to model communication systems as pair-sets of interconnected nodes and their linkages (edges). This paper applies this paradigm to study an interacting system in regional economy consisting of daily road transportation flows for labor purposes, the so-called commuting phenomenon....
Article
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In this study, we provide the VisExpA (Visibility Expansion Algorithm), a computational code that implements a recently published method, which allows generating a visibility graph from a complex network instead of a time-series that is currently applicable. The proposed algorithm is applied to a complex network and it uses a node-wise control-attr...
Article
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The fast-growing, capital-intensive, and fragile structure of air transport makes the aviation sector crucial for national economic growth and regional development. Over a century old, Turkey’s aviation sector has undergone a remarkable transition from a state-regulated market to a liberal, competitive one. This fundamental change has created an ur...
Article
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Air transport is an aspect of the transportation and communication sector, it is a capital and technology intensive component of the national economies, and it plays an important role in communication and trade, in tourism development, and generally in the economic and regional development. The major role of air transport in the support of distant...
Article
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The process of economic growth is directly related to structural changes, the study of which has been the subject of research for many decades and it allowed detecting the dynamics affecting national and regional economies over time. Especially for the policy makers, the in-depth understanding of inter-sectorial linkages and of the structural chang...
Article
This paper assesses the comparative performance of the Mediterranean coastal destinations using data envelopment analysis, considering both the efficiency and effectiveness dimensions. The analysis does not only provide a benchmarking framework for the destinations, but a framework to reveal, in a comparative context, the trade-offs between efficie...
Preprint
Full-text available
This paper expands the degree-based consideration of the preferential attachment growth process and applies five different connectivity criteria (node degree, clustering coefficient, betweenness centrality, closeness centrality, and eigenvector centrality) to define the development of new links in the networks. Based on statistical inference, the a...
Article
Full-text available
[GR] Αυτό το άρθρο μελετά το ελληνικό διαπεριφερειακό δίκτυο οδικών μεταφορών (Greek road network - GRN) εφαρμόζοντας ανάλυση σύνθετων δικτύων (complex network analysis - CNA) και εμπειρική προσέγγιση. Η μελέτη αποσκοπεί στην εξόρυξη της κοινωνικοοικονομικής πληροφορίας που είναι ενσωματωμένη στην τοπολογία του GRN και να ερμηνεύσει τον τρόπο με το...
Article
Full-text available
[GR] Αυτό το άρθρο μελετά το ελληνικό διαπεριφερειακό δίκτυο των ημερήσιων μετακινήσεων με σκοπό την εργασία (Greek commuting network - GRN), χρησιμοποιώντας μέτρα και τεχνικές της ανάλυσης σύνθετων δικτύων και εμπειρικές μεθόδους. Η μελέτη αποσκοπεί στην ανίχνευση των δομικών χαρακτηριστικών του φαινομένου commuting και του τρόπου με τον οποίο το...
Article
Full-text available
[GR] Το άρθρο αυτό επιχειρεί να αναδείξει τη σημασία που κατέχουν οι μεταφορές στην οικονομική ανάπτυξη της Ελλάδας και ειδικότερα οι μεταφορικές υποδομές και τα δίκτυα, τα οποία συνιστούν ένα πάγιο δομημένο κεφάλαιο που εκτείνεται, με διάφορες μορφές, στο σύνολο της χώρας. Για το σκοπό αυτό, μελετώνται διαχρονικά και διατομεακά στατιστικά στοιχεία...
Article
Full-text available
During recent decades the coastal cities in Greece have experienced a rapid transformation; mainly due to touristic development, urbanization and increase of their population. Greece (Hellas) is characterized by its high coastal concentration and it is estimated that 57% of the country's population live in coastal areas. These high concentrations o...
Article
Full-text available
During recent decades the coastal cities in Greece have experienced a rapid transformation; mainly due to touristic development, urbanization and increase of their population. Greece (Hellas) is characterized by its high coastal concentration and it is estimated that 57% of the country's population live in coastal areas. These high concentrations o...
Article
Full-text available
MIBES CD ISBN: 978-960-9510-08-0 PAPERS PRESENTED ORALLY Page Proposing an Index of Domination in an international trade relation: An illustrative analysis for trade activity conducted among the EU and the ENP countries Kallioras D.
Article
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Networks are models of communication systems expressing the complex state of interconnection, in terms of graphs. The network paradigm has been proven powerful in modeling the complexity of real-world communication structures, such as transportation, biological, and socioeconomic systems, of the World Wide Web, etc. Among the systems of human commu...
Article
Recent technological and philosophical research has revealed that almost everything around us is heavily dependent on network-based complexities. Airport network topologies are complex networks and their analyses are crucial regarding the fact that the evolution of airport network topology influences the economic growth of regions and countries. An...
Method
This paper provides a technical description of the visibility expansion algorithm proposed by Tsiotas and Charakopoulos (2018), along with the computational codes for the implementation of the analysis. The visibility expansion algorithm is a novel expansion of the visibility algorithm of Lacasa et al. (2008), which allows generating a visibility g...