Alexis Quesada-Arencibia

Alexis Quesada-Arencibia
Universidad de Las Palmas de Gran Canaria | ULPGC · Instituto Universitario de Ciencias y Tecnologías Cibernéticas (IUCTC)

PhD - Computer Science

About

89
Publications
10,506
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
318
Citations

Publications

Publications (89)
Article
Full-text available
The COVID-19 pandemic has had very negative effects on public transport systems. These effects have compromised the role they should play as enablers of social equity and environmentally sustainable mobility and have caused serious economic losses for public transport operators. For this reason, in the context of pandemics, meaningful epidemiologic...
Article
Full-text available
This paper expands upon a previous publication and is the natural continuation of an earlier study which presented an industrial validator of expiration codes printed on aluminium or tin cans, called MONICOD. MONICOD is distinguished by its high operating speed, running at 200 frames per second and validating up to 35 cans per second. This paper ad...
Chapter
Indoor Positioning Systems (IPS) are an alternative to Global Positioning System (GPS) in those environments where its signal is attenuated. This is one of the main reasons why IPS has been the subject of much research over the last two decades and where different technologies and methods have been used. Among the technologies used in IPS are those...
Chapter
Promentor is a solution that advises job seekers how to effectively improve their chances of getting a job in a certain area of interest by focusing on what, at least historically, seems to work best. To this end, Promentor first analyzes previous selection processes, trying to quantitatively evaluate the effective value of the characteristics that...
Book
The two-volume set LNCS 12013 and 12014 constitutes the thoroughly refereed proceedings of the 17th International Conference on Computer Aided Systems Theory, EUROCAST 2019, held in Las Palmas de Gran Canaria, Spain, in February 2019. The 123 full papers presented were carefully reviewed and selected from 172 submissions. The papers are organized i...
Book
The two-volume set LNCS 12013 and 12014 constitutes the thoroughly refereed proceedings of the 17th International Conference on Computer Aided Systems Theory, EUROCAST 2019, held in Las Palmas de Gran Canaria, Spain, in February 2019. The 123 full papers presented were carefully reviewed and selected from 172 submissions. The papers are organized i...
Article
Full-text available
Character recognizers have generally focused on printed text on paper with an emphasis on generality rather than speed. This makes the proposed algorithms not applicable in the context of the very high-speed industrial validation of expiration codes printed on the metal surface of a can. The extreme demands of speed and the adverse effects of light...
Article
Full-text available
In road-based mass transit systems, the travel time is a key factor affecting quality of service. For this reason, to know the behavior of this time is a relevant challenge. Clustering methods are interesting tools for knowledge modeling because these are unsupervised techniques, allowing hidden behavior patterns in large data sets to be found. In...
Article
Full-text available
The current paradigm of intelligent transport systems (ITS) is based on the continuous observation of what is happening in the transport network and the continuous processing of data coming from these observations. This implies the handling and processing of a massive amount of data, and for this reason, data mining and big data are fields increasi...
Article
Full-text available
Indoor positioning systems (IPS) are used to locate people or objects in environments where the global positioning system (GPS) fails. The commitment to make bluetooth low energy (BLE) technology the leader in IPS and their applications is clear: Since 2009, the Bluetooth Special Interest Group (SIG) has released several improved versions. BLE offe...
Article
Full-text available
In road-based mass transit systems, travel time is a key factor in providing quality of service. This article proposes a method of predicting travel time for this type of transport system. This method estimates travel time by taking into account its historical behaviour, represented by historical profiles, and the current behaviour recorded on the...
Article
Full-text available
Blue Low Energy technology is playing an important role nowadays in ubiquitous systems, being the beacons a key element. The configuration of parameters related to the beacons, such as their transmission power or their advertising interval should be studied in order to build fingerprinting indoor positioning systems based on this technology as accu...
Article
Full-text available
Travel Time plays a key role in the quality of service in road-based mass transit systems. In this type of mass transit systems, travel time of a public transport line is the sum of the dwell time at each bus stop and the nonstop running time between pair of consecutives bus stops of the line. The aim of the methodology presented in this paper is t...
Article
Full-text available
Road-based mass transit systems are an effective means to combat the negative impact of transport that is based on private vehicles. Providing quality of service in this type of transit system is a priority for transport authorities. In these systems, travel time is a basic factor in quality of service. This paper presents a methodology, based on d...
Article
Full-text available
Bluetooth Low Energy technology coupled with fingerprinting provides a simple way to position users with high accuracy in indoor environments. In this paper, we study the effect of BLE protocols and channels on indoor positioning using different distance and similarity measures in a controlled environment. With the aim of reproducing a real positio...
Article
Full-text available
The development of efficient mass transit systems that provide quality of service is a major challenge for modern societies. To meet this challenge, it is essential to understand user demand. This article proposes using new time-dependent attributes to represent demand, attributes that differ from those that have traditionally been used in the desi...
Chapter
A prototype tool for the detection, segmentation, classification and counting of Lego pieces based on the OpenCV artificial vision library is presented. This prototype arises before the need to automate the complex and tedious task of the inventoried one of Lego kits of the MindStorm serie.
Book
The two-volume set LNCS 10671 and 10672 constitutes the thoroughly refereed proceedings of the 16th International Conference on Computer Aided Systems Theory, EUROCAST 2017, held in Las Palmas de Gran Canaria, Spain, in February 2017. The 117 full papers presented were carefully reviewed and selected from 160 submissions. The papers are organized...
Conference Paper
This paper presents a study of the impact of dynamic factors on indoor positioning. A positioning system is presented that provides advanced information services based on two subsystems: Wi-Fi and Bluetooth Low Energy (BLE). The first subsystem was intended to position users with not very high levels of accuracy and precision, but not too far from...
Conference Paper
The quality of service has a main relevance in mass transit systems, being the reliability a key factor for this quality. A system model for the continuous transport data acquisition and computing of these data to improve the quality of service of road mass transit systems is presented in this contribution. This proposal has been conceived to provi...
Conference Paper
The quality of the time travel prediction is a key factor in the transport of people and goods. This prediction is used in different facets related to management and planning of the transport activity, having special influence in the service quality in public transport. In this paper a methodology to analyse the factors which affect to travel time...
Conference Paper
In this work, we provide an analysis of BLE channel-separate fingerprinting using different distance and similarity measures. In a 168 m\(^{2}\) testbed, 12 beacons with Eddystone and iBeacon protocols set were deployed, taking into account the orientation of users and considering 10 distance/similarity measures. We have observed that there is an o...
Article
Full-text available
Quality is an essential aspect of public transport. In the case of regular public passenger transport by road, punctuality and regularity are criteria used to assess quality of service. Calculating metrics related to these criteria continuously over time and comprehensively across the entire transport network requires the handling of large amounts...
Article
Full-text available
This paper presents a study of positioning system that provides advanced information services based on Wi-Fi and Bluetooth Low Energy (BLE) technologies. It uses Wi-Fi for rough positioning and BLE for fine positioning. It is designed for use in public transportation system stations and terminals where the conditions are “hostile” or unfavourable d...
Conference Paper
Robotics in education is considered as a powerful tool for motivating and training students. Thanks to its multidisciplinary character, it allows for the development of the contents of a multitude of materials, mainly those related to Science, Technology, Engineering and Mathematics (STEM). This has been demonstrated in many studies and experiences...
Conference Paper
Mobility is a basic need for people, therefore the authorities in advanced societies pay special attention to systems and initiatives that improve or facilitate it. In this work, a ubiquitous signaling system for visually impaired people, using a combination of WiFi and Bluetooth Low Energy (BLE) technology with Smart Mobile Devices, is proposed. T...
Conference Paper
Nowadays the public transport systems play a main role in the advanced societies. How to evaluate the quality of the public transport is a critic task of the transport regulatory agencies. One indicator used to measure this quality is the fulfilment of the scheduled operation by the transport operators, specially scheduled arrival times and frequen...
Article
For this project, we have used new technologies to create a new channel of communication between doctors and patients in the treatment of mental disorders. We have created a web application using an adaptable design accessible from any mobile device, which allows doctors to adapt their patients’ therapy to real-time knowledge of their current condi...
Article
Full-text available
This paper presents an architecture model for the development of intelligent systems for public passenger transport by road. The main objective of our proposal is to provide a framework for the systematic development and deployment of telematics systems to improve various aspects of this type of transport, such as efficiency, accessibility and safe...
Article
Full-text available
In this article we describe a low-cost, minimally-intrusive system for the efficient management of parking spaces on both public roads and controlled zones. This system is based on wireless networks of photoelectric sensors that are deployed on the access roads into and out of these areas. The sensors detect the passage of vehicles on these roads a...
Article
Full-text available
Expiration date labels are ubiquitous in the food industry. With the passage of time, almost any food becomes unhealthy, even when well preserved. The expiration date is estimated based on the type and manufacture/packaging time of that particular food unit. This date is then printed on the container so it is available to the end user at the time o...
Article
In this paper we present a first prototype of a teleoperated telepresence system that uses a range of devices aimed at operating a mobile platform situated in a remote location while offering the user the sensation of being at that remote location. The objective of this first stage of the project is to achieve a sensation of telepresence by simply...
Book
This LNCS double volume LNCS 10069-10070 constitutes the refereed proceedings of the 10th International Conference on Ubiquitous Computing and Ambient Intelligence, UCAmI 2016, which includes the International Work Conference on Ambient Assisted Living (IWAAL), and the International Conference on Am-bient Intelligence for Health (AmIHEALTH), held i...
Book
This LNCS double volume LNCS 10069-10070 constitutes the refereed proceedings of the 10th International Conference on Ubiquitous Computing and Ambient Intelligence, UCAmI 2016, which includes the International Work Conference on Ambient Assisted Living (IWAAL), and the International Conference on Am-bient Intelligence for Health (AmIHEALTH), held i...
Conference Paper
In this paper we present a first prototype of a teleoperated telepresence system that uses a range of devices aimed at operating a mobile platform situated in a remote location while offering the user the sensation of being at that remote location. The objective of this first stage of the project is to achieve a sensation of telepresence by simply...
Conference Paper
How to manage the parking space in urban areas is explained in this work, assuming the aims of Smart City, presenting a realistic solution to this important problem. The proposed solution consists of an intelligent management system for on-street public parking based on wireless sensor network and cloud computing technologies.
Conference Paper
For this project we have used new technologies to create a new channel of communication between doctors and patients in the treatment of mental disorders. We have created a web application using an adaptable design accessible from any mobile device, which allows doctors to adapt their patients’ therapy to real-time knowledge of their current condit...
Conference Paper
In the context of public passenger transport by road, the surveillance of the transport network is a responsibility of transport authorities and companies. In the context of intercity transport, there are isolated places where this task is difficult to carry out due to lack access to basic resources such as electricity and communications. In this p...
Conference Paper
In this work a system architecture model for the provision of advanced information services in the context of public transport of passengers by road is presented. The main aim of this model is to provide a frame for systematic development of ubiquitous services integrated in transport infrastructures. The proposed architecture is based on standard...
Conference Paper
Email Print Request Permissions The focus is set in presenting a system that could be a realistic solution for urban traffic reduction thanks to the installation of GUIATE, an intelligent management system for public parking in both on-street and off-street. Strategy and planning methods are complemented with the use of non-invasive wireless sensor...
Article
Full-text available
The development of public transit systems that are accessible and safe for everyone, including people with special needs, is an objective that is justified from the civic and economic points of view. Unfortunately, public transit services are conceived for people who do not have reduced physical or cognitive abilities. In this paper, we present an...
Conference Paper
In this paper, we have focused on applying robotics as a social element and an intermediary in tourism. To that end, a system has been developed that will benefit the tourist experience. To do this, every room of the hotel would have a low-cost social robot, a Karotz. This robot interacts orally with the tourist to provide him or her with news abou...
Conference Paper
This paper described how ubiquitous computing and ambient intelligence can be applied in order to make more accessible the public road transport for people with special needs. The main goal of the proposed system is to assist to this kind of people during the trips. This system is autonomous and does not affect the common operations carried out in...
Article
Full-text available
This study describes a system for the automatic recording of positioning data for public transport vehicles used on roads. With the data provided by this system, transportation-regulatory authorities can control, verify and improve the routes that vehicles use, while also providing new data to improve the representation of the transportation networ...
Conference Paper
Georeferencing consists in establishing a relationship between information and geographic locations, usually through geospatial referencing (i.e., longitude and latitude coordinates). Super-Resolution is a technique that enhances the spatial resolution of an imaging system. In this paper, the integration of both Georeferencing and Super-Resolution...
Conference Paper
This paper described the smart system that is executed on board the vehicles of the fleet of a public transport company whose mission is to help the regulating authorities to control, verify and enhance the public transport service. This system is autonomous and does not interfere in the operations carried out by the vehicle; it provides useful dat...
Conference Paper
This paper presents the development of a pervasive system prototype for the Local Tow-Truck service. This system makes it possible to video, process, store and transfer each service carried out by the company with any of the tow-trucks in its fleet. The data are administered by the tow-truck operators by means of mobile devices and are temporarily...
Conference Paper
In order to play georeferenced videos, The Oceanic Platform of the Canary Islands (PLOCAN) is currently using a desktop-based software. In this paper, a port to a web-based video player is reviewed. In addition to its main advantages, new features are also discussed, such as the download of superresolved frames.
Conference Paper
This paper covers a new approach on Cloud Computing for Scientific Data Storage and Processing using a hybrid system with both on-site and on-the-cloud systems. The system analyzes use cases which are not resolved by either one of the single systems themselves.
Article
Development of a robotic tourist assistant that allows tourist getting information about relevant places inside a hotel, a museum, a theme park, a zoo or wherever they be, using their voice and cards to interact.
Conference Paper
In this paper we describe our proposal for humanoid robotic system to develop a football team that compete in the Robocup, describing hardware components used and software components developed.
Conference Paper
Using existing technology, nowadays it is possible to solve, or at least to reduce, most of the possible negative effects caused by the mismanagement of the supply chain process. In such industry, automation in product monitoring and control, inventory, customer relationship management, fleet tracking, etc., is a typical issue dealt by the companie...
Book
The two-volume set LNCS 8111 and LNCS 8112 constitute the papers presented at the 14th International Conference on Computer Aided Systems Theory, EUROCAST 2013, held in February 2013 in Las Palmas de Gran Canaria, Spain. The total of 131 papers presented were carefully reviewed and selected for inclusion in the books. The contributions are organize...
Conference Paper
The interoperability is the capacity of a system to work autonomously in different contexts, permitting the collaboration with other systems. To achieve this challenge it is necessary for the system to use a common context model. Therefore the context model is a key aspect of the ubiquitous system. In this work, a context model for public transport...
Conference Paper
A case of practical use of ubiquitous data management is presented in this paper; specifically the intensive-data management of a ubiquitous environment working in a public transport context. The description of the working principles of the system is made addressing the specific characteristics of the pervasive environment that are: autonomy, mobil...
Article
Full-text available
This paper presents OnRoute, a framework for developing and running ubiquitous software that provides information services to passengers of public transportation, including payment systems and on-route guidance services. To achieve a high level of interoperability, accessibility and context awareness, OnRoute uses the ubiquitous computing paradigm....
Article
Full-text available
This paper outlines an information system for tourists using collective public transport based on mobile devices with limited computation and wireless connection capacities. In this system, the mobile device collaborates with the vehicle infrastructure in order to provide the user with multimedia (visual and audio) information about his/her trip. T...
Article
Full-text available
This article presents a practical case of a pervasive multimedia guidance system for public transport passengers. In order to provide useful information to passengers, the system is capable of operating and adapting spontaneously to the different parts of a public transport network, using local data communication technologies. The multimedia data p...
Article
Full-text available
This paper describes how to provide suitable computing systems for information systems technologies learning using virtualization and hosting technologies. The main functionalities and components of an university learning lab based on these technologies are presented. All the software components used in its development are open source. Also, the us...
Conference Paper
A traveler assistant for public transport is described in this paper. The main purpose of this system is to provide to the passenger real time information about the route, for example: estimated time to the next stop of the route or estimated time to the traveler destination, also if desired, tourist information about nearby interesting points. The...
Article
This paper describes how to provide suitable computing systems for information systems technologies learning using virtualization and hosting technologies. The main functionalities and components of a university learning lab based on these technologies are presented. All the software components used in its development are open source. Also, the use...
Conference Paper
The interoperability is a general requirement of the public transport information systems. This property permits them the integration with others systems that operate in different contexts. The interoperability is achieved by system components with the capacity to work autonomously in different contexts and using a common conceptual model in order...
Conference Paper
Knowing the location of the road in an intelligent traffic systems is one of the most used solutions to ease vehicle detection. For this purpose we propose a vehicle recognition algorithm which performs a real time automatic detection of the zones which vehicles occupy. Such algorithm is capable of functioning under extreme conditions such as low r...