Papers by Panagiotis Stratakis
The aim of this paper is to present the optimization<br> methodology developed in the frame... more The aim of this paper is to present the optimization<br> methodology developed in the frame of a Coastal Transport<br> Information System. The system will be used for the effective design<br> of coastal transportation lines and incorporates subsystems that<br> implement models, tools and techniques that may support the design<br> of improved networks. The role of the optimization and decision<br> subsystem is to provide the user with better and optimal scenarios<br> that will best fulfill any constrains, goals or requirements posed. The<br> complexity of the problem and the large number of parameters and<br> objectives involved led to the adoption of an evolutionary method<br> (Genetic Algorithms). The problem model and the subsystem<br> structure are presented in detail, and, its support for simulation is also<br> discussed.
The coastal transport information system (CO.TR.I.S.) as an integrated approach for the maritime transport design
Le systeme d'information sur le transport cotier (Co.Tr.I.S.) est un systeme d'informatio... more Le systeme d'information sur le transport cotier (Co.Tr.I.S.) est un systeme d'information multifonction qui peut etre utilise pour la conception efficace de lignes de transport cotier. Co.Tr.I.S. integre huit sous-systemes («S1» a «S8»), qui comprennent des modeles, des outils et des techniques susceptibles de prendre en charge la conception de reseaux cotiers ameliores. Un apport majeur attendu de Co.Tr.I.S. est qu’il puisse supporter le processus de prise de decision par des decideurs et des parties prenantes (ministeres, entreprises maritimes, autorites locales, ...) pour ameliorer ce systeme de transport. Afin de prendre en charge cette fonctionnalite, Co.Tr.I.S. est equipe de sous-systemes de recuperation de donnees (« S1 », « S2 »), d'analyse statistique (« S3 »), de visualisation des donnees (« S4 »), ainsi que de sous-systemes dotes de modules specialises pour la generation de reseau, la validation de scenarios (« S5 »), l’optimisation de la solution et l’aide a...
GIS Applications in Costal Transport: The Co.Tr.I.S Case and Its Contribution Towards the Islands Sustainable Smartification
Computational Science and Its Applications – ICCSA 2018, 2018
Coastal Transport Integrated System (Co.Tr.I.S) is an under development integrated spatial inform... more Coastal Transport Integrated System (Co.Tr.I.S) is an under development integrated spatial information system for the optimal design of coastal transport lines. This fundamental and applied research project was co-financed from the European Union (EU) and the Greek government. We summarily present the system developed components (system’s functions, spatial databases, thematic maps, statistics, coastal line optimization and other software modules) and the future research perspectives. Finally, we underline the Co.Tr.I.S use of ICT and its contribution to KET (Key Enabling Technologies) towards the Greek islands sustainable smartification.
ISPRS Annals of Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
The Coastal Transport Information System (Co.Tr.I.S) is a multifunction information system that i... more The Coastal Transport Information System (Co.Tr.I.S) is a multifunction information system that is developed for the effective design of coastal transportation lines. The system incorporates several subsystems which include the models, tools, and techniques that support the design of improved coastal networks. Co.Tr.I.S main aim is to support any decision making process of the involved players (Ministry, Maritime companies, Local Authorities, Travel Agencies, Passengers, etc) regarding the improvement & the optimal use of a coastal transport network. Co.Tr.I.S data retrieval, analysis, visualization, network design & decision support can accelerate the very slow (currently annual in Aegean) rate of coastal transport network update/upgrade procedures, and, create smarter network implementations that may adapt online on the various demand or requirement changes or updates. Connections, transportation, mobility, as well as port automation are some of the key factors for the "smartification" of entire islands especially in an archipelago like the Aegean Sea. In this work, we present the network design optimization functionality of Co.Tr.I.S, the various optimization stages, the Genetic Algorithm (GA) implementations and its potential to propose a better network design based on each user preferences. A sample case study is given to show its smartness & adaptability to each user needs and, finally, a discussion follows on how it could be complemented by emerging smart technologies for smarter islands.
ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2011
This article aims to compare the geographic (spatial) objects in 2D (planar objects) proposed by ... more This article aims to compare the geographic (spatial) objects in 2D (planar objects) proposed by CON.G.O.O. and ISO standards, and the ability of a number of GIS software to handle them. The results achieved so far showed that the actual technical possibilities are not always sufficient to support the complex spatial objects proposed by CON.G.O.O.
ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
Greece has more than one hundred inhabited islands, the majority of them are geographically scatt... more Greece has more than one hundred inhabited islands, the majority of them are geographically scattered in small distances in the Aegean Sea. The Aegean Sea suffers systematically from two major issues. First, many islands are not served quite frequently with the continent or other islands' major ports. It is a situation rather problematic for the habitants of the islands who wish to travel, for the patients in need to be transferred to metropolitan hospitals, for the goods transport from and to islands. Second, there is a crucial issue in the Aegean Sea regarding the so-called "thin lines". Governments spend every year tens of million euros in subsidies in order to sustain the thin lines. Our aim is the development of an integrated and holistic spatial information system to effectively design coastal transportation lines to combat the above mentioned problems. This paper will present the project framework, the methodology followed, data issues and preliminary results.
Ersa Conference Papers, 2011
Rural development has attracted the interest of European regional and agricultural policies in th... more Rural development has attracted the interest of European regional and agricultural policies in the last two decades. This is more evident after the late 1990's when rural development became the second pillar of Common Agricultural Policy (CAP). In Greece, traditional agricultural programs have given their place to rural development programs. This shift of emphasis in European agricultural policy reflects the change in the way rural development is perceived at an international level. Rural development is no more synonymous to agricultural development and the role of other factors such as alternative employment opportunities and accessibility to urban centers is widely recognized. Greece has a large agricultural sector compared to the European average, although employment in the primary sector has decreased significantly in the last three decades. In terms of rural development great differences are observed among regions which can be attributed to differences in agricultural potential and accessibility to the markets as well as to a differentiated degree of incorporation to international markets. The prospects of the agricultural sector in Greece would not be considered as favorable, especially after the latest CAP reform. Therefore rural development has to be promoted through non-agricultural activities or through some innovative agricultural activities. In this paper a series of indices describing the agricultural potential in the NUTS III regions in Greece as well as several aspects of rural development will be presented. Statistical analysis, mostly classification techniques, will be employed in order to explore the factors contributing to rural development in Greece. Special attention will be given to the introduction of organic farming in Greece and its potential contribution to rural development. Organic farming is considered as an innovative agricultural activity and it can be a viable alternative for declining rural areas.
Rural space in Greece is experiencing a significant transformation. During the last four decades,... more Rural space in Greece is experiencing a significant transformation. During the last four decades, the traditional urban-rural dichotomy has given way to complex spatial patterns, which are undergoing a process of continuous change. This change is the result of a variety of factors such as the international economic environment, the emergence of new economic activities in rural areas, mainly the service sector and tourism, changing urban-rural relations, as well as the implementation of national and European policies for the agricultural sector and for rural development. In addition, rural development is no longer solely dependent on the agricultural sector but also on rural – urban relationships and the presence of a large variety of economic activities in rural areas. In this chapter, data concerning the demographic, economic and infrastructure characteristics of rural areas are analysed, describing the transformation of rural space in Greece. This analysis is employed in order to formulate typologies of rural areas. In particular, a case study for the region of Crete is presented. A typology of rural areas in Crete is developed, which is used in order to suggest policy guidelines for rural development in Crete. The results are presented in a GIS environment and when appropriate comparisons are made with similar studies in Europe. Finally, policies for agricultural and rural development, in the context of European regional and spatial development, are examined in relation to rural patterns in Crete and the development perspectives of rural areas.
Morphing Techniques: Towards new methods for raster based cartographic generalization
Coastal Transport Information System (Co.Tr.I.S.): System and subsystems description. Lecture Notes in Computer Science, Gervasi O., Murgante B., Misra S., Gavrilova M.., Torre C., Rocha A.M., Taniar D., Apduhan B. (editors)
Coastal Transport Integrated System: Spatial Database Schema, Metadata and Data Dictionary
Using classification methods on VHR images for updating middle scales topographic maps, Results of a Two Years Bilateral Research Project between Greece and China
Digital Cartography in the Surveying Department of TEI of Athens: Reforms, Changes, Challenges and Problems
Abstract:-Digital Cartography is a mandatory course of the 7th semester in the Surveying Depart... more Abstract:-Digital Cartography is a mandatory course of the 7th semester in the Surveying Department of TEI of Athens. This paper focuses on the structure of the course subsequent to it being reformed in 2001, the choice of its content, the current and (planned) future use ...
Coastal Transport Information System (Co.Tr.I.S.): System and Subsystems Description
Lecture Notes in Computer Science, 2015
Rural regions in Greece occupy a large part of the territory while the share of rural population ... more Rural regions in Greece occupy a large part of the territory while the share of rural population is quite high. Rural regions present a great diversity in demographic and socioeconomic growth which can be attributed to different characteristics in terms of their location, economic diversification and agricultural potential. Rural development in Greece is not any more dependent on agriculture, although employment in the primary sector is much higher than the European average. A special type of rural regions is the islands where tourism is a very important source of employment and income. In this paper, the relationship between tourism and the primary sector is examined for this type of rural regions. Several indices will be presented comparing the islands with the rest of the country. Although there are important differences among the numerous islands of Greece, in the tourist islands the demographic prospects are positive, while the importance of the primary sector has declined. Fin...
Agricultural Policies for Rural Development in Europe: The Case of Greece
Greece is traditionally considered to be an agricultural country. In the last decades however, an... more Greece is traditionally considered to be an agricultural country. In the last decades however, and particularly after Greece joined the European Union in 1981, the role of the agricultural sector in the country’s economy has decreased. Since the secondary sector has become stagnant, tourism and other tertiary activities gain importance in Greece. Rural development traditionally has been considered synonymous to agricultural development in Greece but also in several European countries. This was the case till the 1980’s when the urban-rural dichotomy characterized rural space and rural population was identified in terms of employment in agriculture. Since the 1990’s several studies in the European Union have indicated that rural regions present a great diversity. In fact the transformation of the agricultural sector from subsistence economy to market-oriented economy resulted to different patterns of rural development. Rural regions which possessed good agricultural potential took ben...
Rural space in Greece is experiencing a significant transformation. During the last four decades ... more Rural space in Greece is experiencing a significant transformation. During the last four decades the traditional urban-rural dichotomy has given its place to complex spatial patterns which are in a process of continuous change. This change is the result of a variety of factors such as the international economic environment, the emergence of new economic activities in rural areas, mainly
E-learning and blended approaches for cartographic courses at the Surveying Engineering Department of Technological Educational Institution (TEI) of Athens: Challenges and Problems
Summary
MULTISCALE SPATIAL DATA BASES CREATION AND CARTOGRAPHIC GENERALIZATION USING HIGH RESOLUTION SATELLITE IMAGES: CONCEPTS, PROCEDURES AND IDEAS IN THE FRAME OF TWO BILATERAL RESEARCH PROJECTS
In 2001, a bilateral project started among the Surv eying Department of the TEI of Athens - Greec... more In 2001, a bilateral project started among the Surv eying Department of the TEI of Athens - Greece, the NRSC of China and "Space Imaging Europe" company with the support of the HGM Service. The objective of this collaboration was the study of the possibility of updating middle sca le topographic maps, using VHR satellite images and the investigation of
Design of a Coastal Transport Integrated System: Preliminary System Specifications and Data Collection for the Aegean Sea Islands
Lecture Notes in Computer Science, 2013
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Papers by Panagiotis Stratakis