Dimitrios Piromalis

University of West Attica | TEIATH · Electrical and Electronics Engineering

Positioning systems are integral to Unmanned Underwater Vehicle (UUV) operation, enabling precise navigation and control in complex underwater environments. This paper comprehensively reviews the key technologies employed for UUV positioning, including acoustic systems, inertial navigation, Doppler velocity logs, and GPS when near the surface. Thes...

The rapid advancement of communication technologies underscores the urgent need for robust and adaptable emergency communication systems (ECSs), particularly crucial during crises and natural disasters. Although network-based ECSs have been extensively studied, integrating open-source technologies, such as software-defined wide area networks (SD-WA...

In this paper, we conducted a state-of-the-art survey on the current state of IoT platforms suitable for the development of smart city (SC) applications. Both commercial and open-source IoT platforms are presented and compared, addressing various significant aspects and characteristics of SC applications, such as connectivity, communication protoco...

As part of two research projects, a small gait analysis device was developed for use inside and outside the home by patients themselves. The project PARMODE aims to record accurate gait measurements in patients with Parkinson’s disease (PD) and proceed with an in-depth analysis of the gait characteristics, while the project CPWATCHER aims to assess...

This paper highlights the crucial role of wireless sensor networks (WSNs) in the surveillance and administration of critical infrastructures (CIs), contributing to their reliability, security, and operational efficiency. It starts by detailing the international significance and structural aspects of these infrastructures, mentions the market tensio...

There is a long-standing collaboration between the Department of Industrial Design and Production Engineering of the School of Engineering of the University of West Attica and the Department of Naval Studies of the Hellenic Naval Academy in the fields of research and applications. This collaboration has already led to the creation of a common inter...

Electric vehicles market is evolving rapidly, introducing a plethora of benefits for modern transportation. In addition, the evolution of lithium-ion batteries technology provide high efficiency and performance with sufficient range. To achieve that, advanced battery management systems monitoring parameters, like state of charge and voltage are req...

The fourth industrial revolution, also known as Industry 4.0, has been impacted by the advancements of various technological areas, including microsatellites. The Internet of Space Things (IoST) and Space Sensor Networks (SSNs) are generally integrated into microsatellites as well as Internet of Things (IoT) devices that have recently been used in...

Drones have become more popular in recent years and this technology has dramatically advanced. Drones are starting to become essential tools in many operations such as surveillance, delivery, and more. A communication system is an essential challenge in drones that determines the drone’s capabilities of guiding, positioning, controlling, and transm...

Following the European Climate Law of 2021 and the climate neutrality goal for zero-emission transportation by 2050, electric vehicles continue to gain market share, reaching 2.5 million vehicles in Q1 of 2023. Electric vehicles utilize an electric motor for propulsion powered by lithium batteries, which suffer from high temperatures caused by peak...

In the prospect of greener transportation means and global emission limitations for the protection of the environment, the electric vehicles' market share is constantly increasing. It is expected that 32% of new vehicles sold in 2030 will be pure electric or plug-in hybrids. As all electric vehicles utilize lithium batteries to power the powertrain...

Digital Twins serve as virtual counterparts, replicating the characteristics and functional-ities of tangible objects, processes, or systems within the digital space, leveraging their capability to simulate and forecast real-world behavior. They have found valuable applications in smart farming, facilitating a comprehensive virtual replica of a far...

Emergency Communication Systems (ECS) are network-based systems that may enable people to exchange information during crises and physical disasters when basic communication options have collapsed. They may be used to restore communication in off-grid areas or even when normal telecommunication networks have failed. These systems may use technologie...

Following the pact for zero emissions until 2035, electric vehicles are continuously increasing their share in the market. To power the motor, EV's use lithium batteries, which suffer from peak and high frequency currents, marginal temperature values and low exploitation of regenerative breaking. To address that issue, a simplified and inexpensive...

The expediential increase in Internet communication technologies leads to its expansion to interests beyond computer networks. MEMS (Micro Electro Mechanical Systems) can now be smaller with higher performance, leading to tiny sensors and actuators with enhanced capabilities. WSN (Wireless Sensor Networks) and IoT (Internet of Things) have become a...

The COVID-19 pandemic brought about a cease to the physical-presence operation of many laboratory-based university courses. As a response, higher education courses turned into distance learning. Distance education can foster sustainability through resource savings offered by the benefits of technology use. Therefore, there is a necessity to establi...

4D printing is a cutting-edge technology that allows for the creation of dynamic, self-assembling structures by utilizing cutting edge, newly introduced smart materials. It builds upon traditional 3D printing by adding the dimension of time, allowing printed objects to change shape or behavior over time. This is achieved through the use of smart ma...

The modern era of green transportation based on Industry 4.0 is leading the automotive industry to focus on the electrification of all vehicles. This trend is affected by the massive advan- tages offered by electric vehicles (EV), such as pollution-free, economical and low-maintenance cost operation. The heart of this system is the electric motor p...

3D printing, also known under the term additive manufacturing, is a technology that allows the creation of complex and highly detailed objects using a digital model and a number of materials, such as plastics, metals, and ceramics. 4D printing is an expansion of 3D printing that incorporates time, meaning that the material used in 3D printing can c...

Electronic remote identification (ER-ID) is a new radio frequency (RF) technology that is initiated by the Federal Aviation Authorities (FAA). For security reasons, traffic control, and so on, ER-ID has been applied for drones by the FAA to enable them to transmit their unique identification and location so that unauthorized drones can be identifie...

Nowadays, there is a market need that is pushing manufacturers to support more sustainable product designs regardless of any crisis. Two important lessons that society inferred from the COVID-19 pandemic are that the industry needs an improved collaboration efficiency that can handle such emergencies and improve its resource conservation to avoid h...

During the pandemic outbreak of COVID-19 in Greece that coincided with the spring semester of the year 2020, conventional face-to-face lessons presented a threat to public health. As a result, house confinement measures were taken. Universities, due to their offering either directly or via their lifelong education centers, were partially prepared t...

This paper presents a new hybrid approach that is suitable for application to energy smart meter gateways, based on combining both blockchain and Secure Element (SE) technologies serving the roles of a secure distributed data storage system and an essential component for building a "root of trust" in IoT platforms simultaneously. Blockchain technol...

During a ship evacuation, many people panic as they do not know the direction that leads to the emergency muster station. Moreover, sometimes passengers get crowded in corridors or stairs, so they cannot save their lives. This paper proposes an IoT-enabled architecture for digital signage systems that directs passengers to the muster stations of a...

The present article contains a study about utilizing the Digital Twins concept in the field of contemporary agricultural production. Through this study, an exemplary architecture has been developed regarding the conversion of a conventional greenhouse to a digital greenhouse. A digital greenhouse modus operandi features a great number of advantages...

With over 40% annual growth at market sales and decrease at air pollution outcome, electric vehicles prove to be the evolution of transportation. However, expected range and lithium battery limitations, considerably affect their adoption by consumers. In this article, hybrid energy storage systems consisting of lithium batteries and ultracapacitors...

Additive manufacturing is a rapidly evolving technological field, beyond he simple application of 3D printers, leading to an entirely new means of designing and manufacturing objects, paving the way for novel and unexplored possibilities. It is currently used in the production of mechanical components and tooling, medical and surgical implants and,...

A newly introduced term in the field of simulating an artificial or physical system is that of the “Digital Twin” concept method. It employs a digital representation and modeling method, capable of expanding and improving the life cycle of complex items, systems, and processes. Nowadays, digital twin technology has become a key research field world...

Every so often, a confluence of novel technologies emerges that radically transforms every aspect of the industry, the global economy, and finally, the way we live. These sharp leaps of human ingenuity are known as industrial revolutions, and we are currently in the midst of the fourth such revolution, coined Industry 4.0 by the World Economic Foru...

Every so often, a confluence of novel technologies emerges that radically transforms every aspect of the industry, the global economy, and finally the way we live. These sharp leaps of human ingenuity are known as industrial revolutions, and we are currently in the midst of the fourth such revolution, coined Industry 4.0 by the World Economic Forum...

Smart grids are popular areas of research as they are an essential component of smart cities, smart homes, IoT, and other popular research areas. Scientific experiments in smart grids may be conducted by researchers who may have limited experience in the field or limited budget or come from different disciplines. This paper is aimed for such a rese...

As part of a research project, a small gait analysis device is being developed that will be used outside of home by the patients themselves. Its main purpose will be to record accurate gait measurements in patients with Parkinson's Disease and proceed with in-depth analysis of the gait characteristics. A key feature of the device will be its small...

The role of Internet-of-Things (IoT) in precision agriculture and smart greenhouses has been reinforced by recent R&D projects, growing commercialization of IoT infrastructure, and related technologies such as satellites, artificial intellige nce, sensors, actuators, uncrewed aerial vehicles, big data analytics, intelligent machines, and radio-freq...

Integrated farm management (IFM) is promoted as a whole farm approach toward Agriculture 4.0, incorporating smart farming technologies for attempting to limit livestock production's negative impacts on the environment while increasing productivity with regard to the economic viability of rural communities. The Internet of Things (IoT) may serve as...

Fabricating objects with desired mechanical properties by utilizing 3D printing methods can be expensive and time-consuming, especially when based only on a trial-and-error test modus operandi. Digital twins (DT) can be proposed as a solution to understand, analyze and improve the fabricated item, service system or production line. However, the dev...

p>In recent years, technology has been growing rapidly. The impact that Information and Communication Technology (ICT) and associated teaching tools have on the learning process is already significant, and this is expected to grow further in the future. Digital Storytelling (DST) is a combination of interaction and learning at the same time and it...

Due to the increasing number of COVID-19 cases, there is a remarkable demand for robots, especially in the clinical sector. SARS-CoV-2 mainly propagates due to close human interactions and contaminated surfaces, and hence, maintaining social distancing has become a mandatory preventive measure. This generates the need to treat patients with minimal...

COVID-19 pandemic outbreak dictated the extensive use of personal protective equipment (PPE) by the majority of the population and mostly by frontline professionals. This need triggered a sudden demand that led to a global shortage of available PPEs threatening to have an immense contribution to the virus contamination spread. In these conditions,...

A Correction to this paper has been published: https://doi.org/10.1007/s43615-021-00061-w

This paper considers the Vehicle Routing Problem (VRP) with fuzzy payloads with the aim to minimize two criteria: the travel distance and the fuel consumption. VRP with fuzzy payloads is an NP-hard problem, in which a fleet of vehicles with finite capacity leaves from a central depot empty of goods and has to serve a set of geographically dispersed...

The need for green energy and minimization of emissions has pushed automakers to cleaner transportation means. Electric vehicles market share is increasing annually at a high rate and is expected to grow even more. This paper aims to review the energy management systems and strategies introduced at literature including all the different approaches...

During the last two years, the COVID-19 pandemic continues to wreak havoc in many areas of the world, as the infection spreads through person-to-person contact. Transmission and prognosis, once infected, are potentially influenced by many factors, including indoor air pollution. Particulate Matter (PM) is a complex mixture of solid and/or liquid pa...

This paper looks into the emerging trends of makerspaces and outsourced 3D printing services, and examines the natural progression between them. Also, by presenting survey empirical data, it investigates the reasons why individual users and enterprises have started to choose such services and the benefits acquired from this choice, that lead to the...

Parkinson's disease is a progressive neuro-degenerative disorder correlating with dysfunction or deprivation of brains dopaminergic neurons, lack of dopamine, and the formation of abnormal protein particles. There are several clinical tests for detection of Parkinson's disease, but nowadays a demand is rising for an objective assessment of symptoms...

As part of the latterly introduced approach of Agriculture 4.0, practices involving ubiquitous computing advancements and conceptual innovations of “smart” agricultural production tend to be adopted. This fact is considered to be critical in addressing the challenge of securing adequate food supplies for the constantly increasing world population,...

Abstract. In recent years the interest in adopting novel wireless Maritime data transmission technologies has peaked, given the difficulties concerning the wired communication inside a ship’s structural complexity, alongside the difficulty in its installation process and its cost. A simulation of the feasibility of wireless data transmission in shi...

Renewable energy sources are rapidly growing as part of energy revolution. Energy systems structure is becoming progressively decentralized. In this context new players, such as prosumers with low capacity of energy production that does not allow them to participate in energy market, could organize a P2P local energy trading without the interventio...

Over time, the fabrication of lattice, porous structures has always been a controversial field for researchers and practitioners. Such structures could be fabricated in a stochastic way, thus, with limited control over the actual porosity percentage. The emerging technology of 3D printing, offered an automated process that did not require the prese...

3D printing has been referred as being the third industrial revolution and was introduced as an innovative fabrication method in order to overcome shortcomings of existing prototyping fabrication techniques. This method involved the forthright fabrication of three-dimensional solid objects derived from a digital CAD file. The advancements in additi...

Aerial Robot Arms (ARAs) enable aerial drones to interact and influence objects in various environments. Traditional ARA controllers need the availability of a high-precision model to avoid high control chattering. Furthermore, in practical applications of aerial object manipulation, the payloads that ARAs can handle vary, depending on the nature o...

The autonomous navigation of an Unmanned Aerial Vehicle (UAV) relies heavily on the navigation sensors. The UAV’s level of autonomy depends upon the various navigation systems, such as state measurement, mapping, and obstacle avoidance. Selecting the correct components is a critical part of the design process. However, this can be a particularly di...

Due to the emergence of the novel human coronavirus disease (COVID-19), human life is jeopardized. Normal livelihood and economy have been disrupted due to safety concerns associated with the viral dissemination. The pandemic has instilled fear in people due to the lack of understanding and the impact an infection could have. In addition, laborator...

The issue of establishing interaction methods among users, applications and systems involved in Smart Agriculture through interfaces which are simple and friendly in end-usage, is considered to be essential for achieving the maximum possible penetration of the IoT technologies in this sector, for the benefit of sustainability. Herewith, in this pap...

The rapid evolution in internet communication technologies resulted in an increased interest for Home Automation Systems (HAS) providing unprecedented levels of interaction for the consumers and the professionals in the industry/business sectors. With the wide adoption of IoT (Internet of Things) technologies, critical sensing and actuation compone...

The Industry 4.0 concept is a prominent trend expected to significantly affect the modernization of all industrial sectors. Since agriculture is a major sector of the primary industry, it is essential to integrate the Industry 4.0 technological advancements into the operational farm management in order ensure food security with regard to the climat...

In the evolution of robotic technology, a machine must be able to hear, understand, think, act and speak. This makes it much easier for people to work with robots, both as partners and by using them to cover their own weaknesses. In this paper, through the study of a series of works in Human-Machine Interface/Interaction (HMI) or Human-Robot Interf...

This paper presents a study on how laboratory education may facilitate the development of systems thinking in adult students. The basic elements of systems thinking are commented, along with their scope and necessity of application. The main methodology of developing a relevant curriculum of laboratorial education is briefly described, based on and...

In this paper, an application in developing a course for secondary vocational education settings in a modular manner is discussed and a number of conclusions are drawn from the process. The application was partly intentional and partly the result of circumstances, as it was realized, being a part of the redesign process of the specialties offered w...

In this paper, an application in developing a course for secondary vocational education settings in a modular manner is discussed and a number of conclusions are drawn from the process. The application was partly intentional and partly the result of circumstances, as it was realized, being a part of the redesign process of the specialties offered w...

The adoption of Precision Farming (PF) practices involving ubiquitous computing advancements and conceptual innovations of "smart" agricultural production toward Agriculture 4.0 is a significant factor for the benefit of sustainable growth. In this context, the dynamic integration of PF facility systems into the Internet of Things (IoT) represents...

Scope Examine the technological background of Cloud Computing, as well as to review its applications in agricultural informatization, focusing particularly on the innovative applications regarding the field of climate-smart agriculture. Innovations of Cloud Computing Technology in Climate-Smart Agriculture

Smart Agriculture is a considerably novel approach which attempts to encounter the climate change challenges as well as the increased global nutritional needs through the adoption of automated and ICT directed innovative technologies. Since the latest solutions for Smart Agriculture employ cloud services and advanced interconnectivity methods which...

Contemporary Home Automation Systems have become very popular to the end-user as they provide them easy and convenient ways to control their home and their appliances with the use of a networking device such as a PC, tablet or a Smartphone. The market provides a plethora of home automation protocols and technologies, with the end user having a diff...