Dimosthenis Anagnostopoulos

Dimosthenis Anagnostopoulos
Harokopio University | HUA · Department of Informatics and Telematics

Professor

About

192
Publications
61,813
Reads
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1,804
Citations
Citations since 2016
67 Research Items
1308 Citations
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2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250

Publications

Publications (192)
Article
Knowledge‐intensive processes (KiPs) have emerged characterizing tasks that are data‐driven, change dynamically and depend on the knowledge and experience of knowledge workers. Case Management Model and Notation (CMMN) language was introduced for modeling unstructured, agile human‐centric processes. As the available Business Process Modeling (BPM)...
Article
Achieving organizational interoperability in public administration is a crucial factor for successful digital transformation, although there are still many challenges and limitations regarding organizational factors. A detailed and comparative review on the evaluation of existing assessment models and tools is provided revealing the need for a holi...
Article
Full-text available
In Fog Computing, fog colonies are formed by nodes cooperating to provide services to end-users. To enable efficient operation and seamless scalability of fog colonies, decentralized control over participating nodes should be promoted. In such cases, autonomous Fog Nodes operate independently, sharing the context in which all colony members provide...
Article
Model-based systems design (MBSD), a current trend adopted by INCOSE, employs the systems modeling language (SysML), a standard introduced by OMG and INCOSE. Though there are numerous works on integrating performance exploitation in SysML, cost is not sufficiently explored as a driving design parameter. By integrating cost analysis in a popular mod...
Article
Full-text available
Case Management Model and Notation (CMMN) has been introduced as a graphical modeling language targeting the modeling of human-centric processes. Despite its growing reputation since 2016, when the OMG standant was released, the usage and the adoption potential of CMMN is not yet evaluated. The goal of this paper is to evaluate CMMN language and th...
Article
Full-text available
Several modern day problems need to deal with large amounts of spatio-temporal data. As such, in order to meet the application requirements, more and more systems are adapting to the specificities of those data. The most prominent case is perhaps the data storage systems, that have developed a large number of functionalities to efficiently support...
Article
Full-text available
The article “MongoDB Vs PostgreSQL: A comparative study on performance aspects”, written by Antonios Makris, Konstantinos Tserpes, Giannis Spiliopoulos, Dimitrios Zissis, Dimosthenis Anagnostopoulos, was originally published electronically on the publisher’s internet portal on 05 June 2020 without open access.
Article
Compliance to regulatory requirements is a critical concern in information system development projects. Managing this aspect is increasingly challenging while failures impose costly consequence on the organizations world-wide. However, how a legislation may or may not affect information system development projects is often not easily identifiable d...
Article
Full-text available
Internet of Medical Things (IoMT) systems are envisioned to provide high-quality healthcare services to patients in the comfort of their home, utilizing cutting-edge Internet of Things (IoT) technologies and medical sensors. Patient comfort and willingness to participate in such efforts is a prominent factor for their adoption. As IoT technology ha...
Article
Full-text available
Case Management Model and Notation (CMMN) was introduced by the Object Management Group as an alternative modeling language, targeting human-centric processes characterized by lack of structure and agility. However, although it is adequately supported by well-known process management tools, CMMN applicability as a modeling language is being questio...
Conference Paper
The achievement of interoperability between public administrations across Europe is considered to be a crucial factor for the delivery of efficient, cost-effective and transparent public services. There are still many challenges and limitations to be faced, due to technical, semantic, legal and organizational factors. The importance of organization...
Conference Paper
Full-text available
The achievement of interoperability between public administrations across Europe is considered to be a crucial factor for the delivery of efficient, cost-effective and transparent public services. There are still many challenges and limitations to be faced, due to technical, semantic, legal and organizational factors. The importance of organization...
Article
Full-text available
This study contributes to the literature on Information Systems (IS) implementation and provides insights into how IS implementation emerges as an assemblage constituted by diverse sociomaterial practices –that is, the intertwining of humans and technology in practice– during the implementation of Greece’s Yearly Property Tax policy and information...
Article
This paper introduces REHAB-C, a goal-based context-aware recommendation system that supports users in transforming their energy habits. A combination of smart sensors and actuators collects information about user actions and their context and evaluates the actions to be proposed. Based on user decisions, REHAB-C either triggers an energy saving ac...
Chapter
Cyber-Physical Systems (CPSs) comprise multiple cyberparts, physical processes, and human participants (end-users) that affect them, and vice versa. During the design of such systems, it is critical for the designer to take into account the end-user-perceived quality of provided services, as well as their cost, and integrate them into the CPSs; str...
Article
Internet of Things (IoT)-based systems are rapidly evolving, offering promising technological, financial and social prospects in multiple domains, including healthcare. Medical systems, integrated with IoT features, can support healthcare activities, such as the remote monitoring of patients, the real-time diagnosis of medical issues, etc., improvi...
Preprint
Predicting the next position of movable objects has been a problem for at least the last three decades, referred to as trajectory prediction. In our days, the vast amounts of data being continuously produced add the big data dimension to the trajectory prediction problem, which we are trying to tackle by creating a {\lambda}-Architecture based anal...
Article
Full-text available
While FOSS solutions have attracted a significant amount of attention, alongside with necessary and growing IT related expenditure for the digitalization of public administration, authorities face the question of whether migration to such solutions is feasible and/or worthwhile. The purpose of the presented work is to analyze existing domain resear...
Article
Predicting the next position of movable objects has been a problem for at least the last three decades, referred to as ‘trajectory prediction’. In our days, the vast amounts of data being continuously produced add the big data dimension to the trajectory prediction problem, which we are trying to tackle by creating a λ-Architecture based analytics...
Article
The concept of Level of Service (LoS) is not inherently supported by Systems Modeling Language (SysML), the standard modeling notation for model‐based systems engineering. This paper describes and demonstrates an approach that enhances SysML to enable LoS modeling and evaluation. A SysML profile enables the definition and visual verification of LoS...
Article
Systems Modeling Language (SysML) is an object management group standard for systems-of-systems engineering. It enables the description of complex system models; however, it cannot effectively support all system engineering activities. For instance, system performance evaluation is usually performed via simulation. In this case, the transformation...
Conference Paper
The amount of sources and sheer volumes of spatiotemporal data have met an unprecedented growth during the last decade. As a consequence, a rapidly increasing number of applications are seeking to generate value by crunching those data. The development of a system that will tap into the potential value of the spatiotemporal big data analysis for a...
Article
Full-text available
E-Government has gained an enormous amount of attention by researchers and practitioners interested in digitizing the public sector through enacting policies and regulations. Compliance of regulatory requirements from these policies and regulations is an important requirement in e-Government service development projects. However, the concepts of re...
Article
Full-text available
With the usage of technologies like the Internet of Things and Cloud, spanning across the spectrum of manufacturing, production and distribution, typical supply chain management (SCM) systems rely on a multitude of services for support. The aim of this paper is to present an integrated system microservice architecture and implementation, consuming...
Conference Paper
Full-text available
Several modern day problems need to deal with large amounts of spatio-temporal data. As such, in order to meet the application requirements, more and more systems are adapting to the speci-ficities of those data. The most prominent case is perhaps the data storage systems, that have developed a large number of func-tionalities to efficiently suppor...
Article
Full-text available
Blockchains are attracting the attention of stakeholders in many industrial domains, including the logistics and supply chain industries. Blockchain technology can effectively contribute in recording every single asset throughout its flow on the supply chain, contribute in tracking orders, receipts, and payments, while track digital assets such as...
Article
Cities strive to invent and deploy smart solutions in the domain of urban mobility, so as to offer innovative services to citizens and visitors and improve the overall quality of life. The focus of this paper is on Autonomous Vehicular Safety (AVS) management systems. Such systems exploit vehicular and road side infrastructures to increase the effe...
Conference Paper
CMMN, developed by OMG, is a graphical language for modeling and managing knowledge work. Being highly unstructured and unpredictable and therefore very challenging, knowledge work is studied by Adaptive Case Management. CMMN encompasses a variety of ACM concepts, facilitating case management, however, is still bound by the traditional separation o...
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
Full-text available
Case Management Modeling and Notation (CMMN) standard was introduced as a alternative language of Business Process Management Notation (BPMN) targeting the modeling of human-centric processes characterized by agility. During our involvement in a project for modeling a collaborative process, the way CMMN may be used by modelers was evaluated. The re...
Preprint
Full-text available
Data management has always been a multi-domain problem even in the simplest cases. It involves, quality of service, security, resource management, cost management, incident identification, disaster avoidance and/or recovery, as well as many other concerns. In our case, this situation gets ever more complicated because of the divergent nature of a c...
Conference Paper
This paper presents a capability-oriented approach that facilitates strategic decisions for dealing with emergent behaviour and dynamics of artefacts and their evolutionary trajectory, where these artefacts are often a blending of physical and cyber actors working synergistically for achieving enterprise goals. We demonstrate this approach using an...
Conference Paper
Full-text available
Adaptive Case Management is an alternative approach to support human-intensive processes. It may be served by Case Management Modeling Notation (CMMN) language for modeling purposes. In this paper, ACM concepts are adopted to support human-intensive processes executed in social environments, referred to as social processes. As a first step, the usa...
Chapter
Smart Communities understand the potential of Internet technology, and make a conscious decision to adopt this technology to transform life and work in significant and positive ways. Smart communities could be effectively supported by social network solutions, though specific issues should be explored to efficiently model the behaviour of community...
Conference Paper
Full-text available
Information systems based on the Internet of Things (IoT) are driving revolutionary solutions in innumerable domains, as the sensitive domain of healthcare. Indicatively, remote monitoring of patients and real-time diagnosis are anticipated as complex systems, offering various services to the associated humans (e.g. patients and caregivers). While...
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...
Conference Paper
The Internet of Things constitutes a prominent field, integrating smart devices and people into complex systems that may vary in scale. To ensure the constant availability and performance of provided services, alternative distributed architectures should be explored, promoting system scalability. To this end, alternative architectures for the IoT a...
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
Electronic government (e-Government) is increasingly gaining attention by the government and researcher to shape the public sector into digital society through enacting several e-Government system development policies and regulations. Hence, the compliance of regulatory requirement from these policies and regulations become an important accountabil...
Article
Full-text available
Traditional Relational Database Management Systems are continuously being replaced by NoSQL data stores as a result of the growing demand for big data applications. The emergence of a large number of implementations of such like systems is a contributing indicator. This paper deals with the analysis of some key design characteristics of NoSQL syste...
Conference Paper
Model-based Systems Engineering (MBSE) promises efficient and effective systems development, by providing integrated system model views and streamlining the transition between different development activities. For instance, system testing with simulation should be provided as a simple facility for the performance evaluation of complex systems. Tran...
Conference Paper
In-memory key-value stores (IMKVS) have now turned into a mainstream technology in order to meet with demanding temporal application requirements under heavy loads. This work examines the factors that affect the load distribution in IMKVS clusters as well as migration policies that cure the problem of unbalanced loads as a means to provide response...
Conference Paper
There is an increase in the number of regulations, standards, legislations and other sources of compliance requirements, which enforce organizations to assess their business processes and make sure that they adhere to the constraints set forth. Following legislative and internal policy changes, every company has to refine its basic strategies in or...
Article
Systems Modeling Language (SysML) is used as the modeling infrastructure in systems engineering, especially for complex systems design, independently of the system domain. Simulation is a common method to perform system model verification, during the systems development process. However, simulation code generation and execution is not integrated wi...
Article
Full-text available
Systems Modeling Language (SysML) is a standard proposed by the OMG for systems-of-systems (SoS) modeling and engineering. To this end, it provides the means to depict SoS components and their behavior in a hierarchical, multi-layer fashion, facilitating alternative engineering activities, such as system design. To explore the performance of SysML,...
Article
In this paper, we model the trajectory of sea vessels and provide a service that predicts in near-real time the position of any given vessel in 4’, 10’, 20’ and 40’ time intervals. We explore the necessary tradeoffs between accuracy, performance and resource utilization are explored given the large volume and update rates of input data. We start wi...
Chapter
Model-based system design is served by a single, multi-layered model supporting all design activities, in different levels of detail. SysML is a modeling language, endorsed by OMG, for system engineering, which aims at defining such models for system design. It provides discrete diagrams to describe system structure and components, to explore alloc...
Conference Paper
Electronic Government has been gathering momentum in research and practices since last decade. It is the contribution and benefit of ICTs to improve the government services to citizen and business organizations through the efficient intra-government operations. However, the introduction of e-Government services have become challenging nowadays beca...