Juan R. Velasco

Dr. Juan R. Velasco

Universidad de Alcala, Alcala de Henares, Spain
orcid

Research Focus & Metrics

Academic Career Length

35Years (1992-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 January 1998
Verified
Book Chapter
Open access
PDF file
Carlos A. IglesiasCarlos A. Iglesias
Carlos A. Iglesias
MGMercedes Garijo
Mercedes Garijo
JGJosé C. González
José C. González
JVJuan R. Velasco
Juan R. Velasco
This article proposes an agent-oriented methodology called MAS-CommonKADS and develops a case study. This methodology extends the knowledge engineering methodology CommonKADS with techniques from objectoriented and protocol engineering methodologies. The methodology consists of the development of seven models: Agent Model, that describes the characteristics of each agent; Task Model, that describes the tasks that the agents carry out; Expertise Model, that describes the knowledge needed by the agents to achieve their goals; Organisation Model, that describes the structural relationships between agents (software agents and/or human agents); Coordination Model, that describes the dynamic relationships between software agents; Communication Model, that describes the dynamic relationships between human agents and their respective personal assistant software agents; and Design Model, that refines the previous models and determines the most suitable agent architecture for each agent, and the requirements of the agent network.

20 March 2018 in Sensors
Verified
Journal Article
Open access
PDF file
LCLuis Cruz-Piris
Luis Cruz-Piris
Diego RiveraDiego Rivera
Diego Rivera
IMIvan Marsa-Maestre
Ivan Marsa-Maestre
EHEnrique De La Hoz
Enrique De La Hoz
JVJuan R. Velasco
Juan R. Velasco
Internet growth has generated new types of services where the use of sensors and actuators is especially remarkable. These services compose what is known as the Internet of Things (IoT). One of the biggest current challenges is obtaining a safe and easy access control scheme for the data managed in these services. We propose integrating IoT devices in an access control system designed for Web-based services by modelling certain IoT communication elements as resources. This would allow us to obtain a unified access control scheme between heterogeneous devices (IoT devices, Internet-based services, etc.). To achieve this, we have analysed the most relevant communication protocols for these kinds of environments and then we have proposed a methodology which allows the modelling of communication actions as resources. Then, we can protect these resources using access control mechanisms. The validation of our proposal has been carried out by selecting a communication protocol based on message exchange, specifically Message Queuing Telemetry Transport (MQTT). As an access control scheme, we have selected User-Managed Access (UMA), an existing Open Authorization (OAuth) 2.0 profile originally developed for the protection of Internet services. We have performed tests focused on validating the proposed solution in terms of the correctness of the access control system. Finally, we have evaluated the energy consumption overhead when using our proposal.

19 March 2024 in Healthcare
Verified
Journal Article
Open access
PDF file
JBJonnathan Santiago Berrezueta-Guzman
Jonnathan Santiago Berrezueta-Guzman
MKMohanad Kandil
Mohanad Kandil
MRMª Luisa Martín Ruiz
Mª Luisa Martín Ruiz
IPIván Pau
Iván Pau
SKStephan Krusche
Stephan Krusche
This study explores the integration of large language models (LLMs), like ChatGPT, to improve attention deficit hyperactivity disorder (ADHD) treatments. Utilizing the Delphi method for its systematic forecasting capabilities, we gathered a panel of child ADHD therapy experts. These experts interacted with our custom ChatGPT through a specialized interface, thus engaging in simulated therapy scenarios with behavioral prompts and commands. Using empirical tests and expert feedback, we aimed to rigorously evaluate ChatGPT’s effectiveness in therapy settings to integrate AI into healthcare responsibly. We sought to ensure that AI contributes positively and ethically to therapy and patient care, thus filling a gap in ADHD treatment methods. Findings show ChatGPT’s empathy, adaptability, and communication strengths, thereby highlighting its potential to significantly improve ADHD care. The study points to ChatGPT’s capacity to transform therapy practices through personalized and responsive patient care. However, it also notes the need for enhancements in privacy, cultural sensitivity, and interpreting nonverbal cues for ChatGPT’s effective healthcare integration. Our research advocates for merging technological innovation with a comprehensive understanding of patient needs and ethical considerations, thereby aiming to pioneer a new era of AI-assisted therapy. We emphasize the ongoing refinement of AI tools like ChatGPT to meet ADHD therapy and patient care requirements more effectively.

15 August 2016 in Sensors
Verified
Journal Article
Open access
PDF file
Susel FernándezSusel Fernández
Susel Fernández
RHRafik Hadfi
Rafik Hadfi
Takayuki ItoTakayuki Ito
Takayuki Ito
IMIvan Marsa-Maestre
Ivan Marsa-Maestre
JVJuan R. Velasco
Juan R. Velasco
Intelligent transportation systems are a set of technological solutions used to improve the performance and safety of road transportation. A crucial element for the success of these systems is the exchange of information, not only between vehicles, but also among other components in the road infrastructure through different applications. One of the most important information sources in this kind of systems is sensors. Sensors can be within vehicles or as part of the infrastructure, such as bridges, roads or traffic signs. Sensors can provide information related to weather conditions and traffic situation, which is useful to improve the driving process. To facilitate the exchange of information between the different applications that use sensor data, a common framework of knowledge is needed to allow interoperability. In this paper an ontology-driven architecture to improve the driving environment through a traffic sensor network is proposed. The system performs different tasks automatically to increase driver safety and comfort using the information provided by the sensors.

1 May 2008 in Journal of Networks
Verified
Journal Article
Closed access
PDF file
IMIvan Marsa-Maestre
Ivan Marsa-Maestre
MLMiguel A. Lopez-Carmona
Miguel A. Lopez-Carmona
JVJuan R. Velasco
Juan R. Velasco
ANAndrés Navarro
Andrés Navarro
Mobile Agents for Service Personalization in Smart Environments

18 September 2013 in Sensors
Verified
Journal Article
Open access
PDF file
Susel FernándezSusel Fernández
Susel Fernández
IMIvan Marsa-Maestre
Ivan Marsa-Maestre
JVJuan R. Velasco
Juan R. Velasco
BABernardo Alarcos Alcázar
Bernardo Alarcos Alcázar
Sensor networks are a concept that has become very popular in data acquisition and processing for multiple applications in different fields such as industrial, medicine, home automation, environmental detection, etc. Today, with the proliferation of small communication devices with sensors that collect environmental data, semantic Web technologies are becoming closely related with sensor networks. The linking of elements from Semantic Web technologies with sensor networks has been called Semantic Sensor Web and has among its main features the use of ontologies. One of the key challenges of using ontologies in sensor networks is to provide mechanisms to integrate and exchange knowledge from heterogeneous sources (that is, dealing with semantic heterogeneity). Ontology alignment is the process of bringing ontologies into mutual agreement by the automatic discovery of mappings between related concepts. This paper presents a system for ontology alignment in the Semantic Sensor Web which uses fuzzy logic techniques to combine similarity measures between entities of different ontologies. The proposed approach focuses on two key elements: the terminological similarity, which takes into account the linguistic and semantic information of the context of the entity’s names, and the structural similarity, based on both the internal and relational structure of the concepts. This work has been validated using sensor network ontologies and the Ontology Alignment Evaluation Initiative (OAEI) tests. The results show that the proposed techniques outperform previous approaches in terms of precision and recall.