George Bravos

George Bravos
Harokopio University | HUA · Department of Informatics and Telematics

PhD

About

44
Publications
7,083
Reads
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458
Citations
Citations since 2016
24 Research Items
342 Citations
20162017201820192020202120220204060
20162017201820192020202120220204060
20162017201820192020202120220204060
20162017201820192020202120220204060
Additional affiliations
January 2003 - September 2008
University of Piraeus
Position
  • Researcher

Publications

Publications (44)
Chapter
A large number of EU organisations already leverage Big Data pools to drive value and investments. This trend also applies to the banking sector. As a specific example, CaixaBank currently manages more than 300 different data sources (more than 4 PetaBytes of data and increasing), and more than 700 internal and external active users and services ar...
Chapter
Full-text available
Manufacturing processes are highly complex. Production lines have several robots and digital tools, generating massive amounts of data. Unstructured, noisy and incomplete data have to be collected, aggregated, pre-processed and transformed into structured messages of a common, unified format in order to be analysed not only for the monitoring of th...
Article
Full-text available
Over the years, the manufacturing industry has seen constant growth and change. On one level, it has been affected by the fourth industrial revolution (Industry 4.0). On another, it has had to enhance its ability to meet higher customer expectations, such as more customized products at a faster rate. These factors have led many manufacturing compan...
Article
Full-text available
Modern industrial systems now, more than ever, require secure and efficient ways of communication. The trend of making connected, smart architectures is beginning to show in various fields of the industry such as manufacturing and logistics. The number of IoT (Internet of Things) devices used in such systems is naturally increasing and industry lea...
Article
Full-text available
Energy efficiency based on behavioral change has attracted increasing interest in recent years, although, solutions in this area lack much needed techno-economic analysis. That is due to the absence of both prospective studies and consumer awareness. To close such gap, this paper proposes the first techno-economic assessment of a behavioral change-...
Chapter
Full-text available
Artificial intelligence (AI) is playing an increasing role in the logistical aspects of a production site in an automotive industry. The pre-calculation of critical situations in the delivery of parts to the supplier network faces increasing disruptions which have an impact on delivery reliability. The planning and control processes are currently i...
Book
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Going through the 21st century, the forefront of education interests is the extent to which games can contribute to the cultivation of critical thinking and creativity, as well as in the development of technological skills. A wide range of research, therefore, has focused on finding the effect of digital educational games on a variety of teaching f...
Chapter
Full-text available
Data-driven approaches will be a pivotal tool to interpret traffic data and to optimise operations to enable more efficient, individual, public transport. Whereas nowadays data remain a proprietary resource, Finland pioneered an open ecosystem. In this work, we present an architecture to acquire heterogeneous data sources and different data refinem...
Preprint
Full-text available
This paper discusses the perspective of the H2020 TEACHING project on the next generation of autonomous applications running in a distributed and highly heterogeneous environment comprising both virtual and physical resources spanning the edge-cloud continuum. TEACHING puts forward a human-centred vision leveraging the physiological, emotional, and...
Chapter
Sustainable energy is hands down one of the biggest challenges of our times. As the EU sets its focus to reach its 2030 and 2050 goals, the importance of energy efficiency for energy consumers/prosumers becomes prevalent. Over the years, a lot of different approaches have been followed to engage end-users and affect energy-related occupant behaviou...
Preprint
Full-text available
In spite of the substantial advance in developing energy-efficient buildings, power demand in the building sector is still remarkably growing due to teleworking and e-learning triggered by the COVID-19 movement restrictions. This is highlighted by the inefficiency of energy saving measures that have recently been set owing to the the marketability...
Chapter
Full-text available
Cyber security is always a main concern for critical infrastructures and nation-wide safety and sustainability. Thus, advanced cyber ranges and security training is becoming imperative for the involved organizations. This paper presets a cyber security training platform, called THREAT-ARREST. The various platform modules can analyze an organization...
Conference Paper
Full-text available
Cyber security is always a main concern for critical infrastructures and nation-wide safety and sustainability. Thus, advanced cyber ranges and security training is becoming imperative for the involved organizations. This paper presets a cyber security training platform, called THREAT-ARREST. The various platform modules can analyze an organization...
Preprint
Technology advancements are evident in the healthcare field; numerous new opportunities and applications have emerged during the last years based on embedded intelligence and related to real-time diagnosis of medical issues, tele-care and telemedicine, remote monitoring of patients, computer-assisted “smart” transportation in case of emergencies, a...
Conference Paper
Capability oriented requirements engineering is an emerging research area where designers are faced with the challenge of analyzing changes in the business domain, capturing user requirements, and developing adequate IT solutions taking into account these changes and answering user needs. In this context, researching the interplay between design-ti...
Article
Full-text available
Economic growth in Europe has been, strongly associated with urbanization, overwhelming cities with vehicles. This renders mobility inside cities problematic, since it is often associated with large waste of time in traffic congestions, environmental pollution and accidents. Cities struggle to invent and deploy “smart” solutions in the domain of ur...
Conference Paper
Economic growth in Europe has been, strongly associated with urbanization, overwhelming cities with vehicles. This renders mobility inside cities problematic, since it is often associated with large waste of time in traffic congestions, environmental pollution and accidents. Cities struggle to invent and deploy “smart” solutions in the domain of ur...
Conference Paper
Full-text available
In this paper we outline an initial typology and framework for the purpose of profiling human-machine networks, that is, collective structures where humans and machines interact to produce synergistic effects. Profiling a human-machine network along the dimensions of the typology is intended to facilitate access to relevant design knowledge and exp...
Article
Full-text available
In the current hyper-connected era, modern Information and Communication Technology systems form sophisticated networks where not only do people interact with other people, but also machines take an increasingly visible and participatory role. Such human-machine networks (HMNs) are embedded in the daily lives of people, both or personal and profess...
Conference Paper
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Strategic alignment among digital services and organizational objectives is crucial for IT, if the enterprise is to use it for competitive advantage. The motivation for the work presented in this paper is based on the need for the design of services that meet the challenges of alignment, agility and sustainability in relation to dynamically changin...
Conference Paper
The Future Internet (FI) era dictates the deployment of high complexity systems having a variety of properties such as adaptivity, self configuration and self optimization. This paper discusses on the design and deployment of an autonomic management framework, targeting real-time optimization of operational properties in a smart building cognitive...
Conference Paper
It is of utmost importance to design and develop Intelligent Transport Systems (ITS) that can be efficient, reliable and cost effective. A valid manner to realize this is to attribute vehicles with embedded intelligence functionalities, so as to provide novel traffic, safety and emergency management solutions. This paper presents such a framework,...
Article
Full-text available
The need for organizations to operate in changing environments is addressed by proposing an approach that integrates organizational development with information system (IS) development taking into account changes in the application context of the solution. This is referred to as Capability Driven Development (CDD). A meta-model representing busines...
Conference Paper
Enterprises operate in dynamically changing environments, consequently, information systems (IS) are a subject to continuous changes. The IS need to be adjusted to different customers, markets and run-time contexts affecting their design and delivery. Variability and customization of the information systems has become a serious challenge. Capabilit...
Conference Paper
Organizations operate in increasingly dynamic and diverse environments. This leads to high variability within the organization, and the necessity to create context-aware information systems. As a part of these systems, context and business process metrics need to be monitored and acted upon. Capability Driven Development (CDD) addresses these chall...
Conference Paper
Full-text available
Capability-driven development (CDD) is an emerging research field aimed at aligning information technology (IT) to business evolution. From a methodological perspective a designer using CDD is faced with the challenge of reasoning about phenomena present in the business domain, capturing user requirements and developing an IT solution that reflects...
Article
Full-text available
Information and Communication Technologies (ICT) rapidly migrate towards the Future Internet era, which is characterised, among others, by powerful and complex network infrastructures and innovative applications, services and content. An application area that attracts immense research interest is transportation. In particular, traffic congestions,...
Article
Wireless sensor networks (WSNs) demand the implementation of energy-aware techniques and low-complexity protocols in all layers. In this paper we propose, implement and evaluate a new protocol that combines energy-efficient routing with end-to-end delay minimisation, and embodies a basic power control scheme. We call this scheme energy-delay minimi...
Conference Paper
Full-text available
Low-cost and low-power sensor nodes forming wireless sensor networks (WSNs) have become suitable for a wide range of applications during recent years. These networks, due to their special functional characteristics, demand the implementation of energy-aware techniques in all layers. Recently a MIMO - based structure has been proposed to offer enhan...
Article
Full-text available
Wireless sensor networks (WSNs) demand the implementation of energy-aware techniques and low-complexity protocols in all layers. Recently, a MIMO-based structure has been proposed to offer enhanced energy savings in WSNs. In this paper, we examine and compare MIMO-based WSN with a multihop transmission in terms of energy efficiency. The results dep...
Conference Paper
Low-cost and low-power sensor nodes forming Wireless Sensor Networks have become suitable for a wide range of applications during recent years. These networks demand the implementation of energy-aware techniques and low complexity protocols in all layers. Recently, a MIMO - based structure has been proposed to offer enhanced energy savings in WSNs,...
Conference Paper
Full-text available
Low-cost and low-power sensor nodes forming Wireless Sensor Networks (WSNs) have become suitable for a wide range of applications during recent years. These networks, due to their special functional characteristics, demand the implementation of energy-aware techniques in all layers. Recently a MIMO-based structure has been proposed to offer enhance...
Conference Paper
Low-cost and low-power sensor nodes forming Wireless Sensor Networks have become suitable for a wide range of applications during recent years. These networks, due to their special characteristics, demand the implementation of energyaware techniques and simple protocols in all layers. In this paper we describe, implement and evaluate power control...
Conference Paper
Wireless sensor networks (WSN) belong to a special category of networks where the nodes are size-limited and operate on small batteries that in most cases cannot be replaced. As a result ensuring the viability of these networks is usually a much more important task than achieving greater performance in terms of quality of services (QoS), capacity (...
Article
Digital modulation schemes have been thoroughly examined over the last decades in order to improve the performance over wireless channels in terms of capacity or BER vs SNR. Sensor networks belong to a special category of wireless networks where energy awareness may be more important than any other aspect such us bandwidth efficiency or Quality of...
Article
Full-text available
Wireless Sensor Networks (WSNs) belong to a special network category with several special characteristics and significantly different priorities. Recently an open-source java simulation tool for WSNs has been developed (SENSASim), and an energy model was applied. Based on SENSASim, we incorporated a more realistic channel model with large scale fad...
Article
Full-text available
Low-cost and low-power sensor nodes forming Wireless Sensor Networks (WSNs) have become suitable for a wide range of applications during recent years. These networks, due to their special functional characteristics, demand the implementation of energy-aware techniques in all layers. Recently a MIMO – based structure has been proposed to offer enhan...

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