Proyecto sombrilla

Tipo de publicación: Conference Paper

Publicado en: Ubiquitous Computing and Ambient Intelligence

Tipo de publicación: Conference Paper

Publicado en: Advances in Human Factors and Systems Interaction

Tipo de publicación: Book Chapter

Publicado en: Ambient Assisted Living and Active Aging

Tipo de publicación: Journal Article

Publicado en: CLEI Electronic Journal

Tipo de publicación: Conference Paper

Publicado en: Ibero-American Conference on Software Engineering

Tipo de publicación: Journal Article

Publicado en: Biology Open

Tipo de publicación: Book Chapter

Publicado en: Historias de las TIC en América Latina y el Caribe: inicios, desarrollos y rupturas

Tipo de publicación: Journal Article

Publicado en: Novática

Tipo de publicación: Journal Article

Publicado en: Anuario Centro de Investigación y Estudios Políticos

Tipo de publicación: Journal Article

Publicado en: VAEP-RITA

Tipo de publicación: Journal Article

Publicado en: CLEI Electronic Journal

Tipo de publicación: Journal Article

Publicado en: The Journal of the Acoustical Society of America

Tipo de publicación: Book Chapter

Publicado en: Computers Helping People with Special Needs

Tipo de publicación: Conference Paper

Publicado en: Sound and Music Computing Conference 2013

Tipo de publicación: Conference Paper

Publicado en: 2014 ASEE Annual Conference

Tipo de publicación: Conference Paper

Publicado en: REV 2014, 11TH International Conference on Remote Engineering and Virtual Instrumentation

Tipo de publicación: Book Chapter

Publicado en: Ubiquitous Computing and Ambient Intelligence. Context-Awareness and Context-Driven Interaction

Tipo de publicación: Conference Paper

Publicado en: Empirical Software Engineering and Measurement, 2013 ACM / IEEE International Symposium on

Tipo de publicación: Journal Article

Publicado en: Proceedings of Meetings on Acoustics

Tipo de publicación: Book Chapter

Publicado en: Ambient Assisted Living and Home Care

Tipo de publicación: Conference Paper

Publicado en: 2012 XXXVIII Conferencia Latinoamericana En Informatica (CLEI)

Tipo de publicación: Journal Article

Publicado en: Revista Repertorio Científico. Universidad Estatal a Distancia.

Tipo de publicación: Journal Article

Publicado en: Revista Educación en Ingenier{ía

Tipo de publicación: Conference Paper

Publicado en: Latin American Congress on requirements engineering & software testing LACREST Medellín

Tipo de publicación: Journal Article

Publicado en: Sensors

Tipo de publicación: Journal Article

Publicado en: The Journal of the Acoustical Society of America

Tipo de publicación: Conference Paper

Publicado en: IASTED International Conference on Computers and Advanced Technology in Education

Tipo de publicación: Journal Article

Publicado en: CLEI Electronic Journal

Tipo de publicación: Conference Paper

Publicado en: Proceedings of the Conferencia Latinoamericana de Informática, CLEI

Tipo de publicación: Conference Paper

Publicado en: Computer Security Applications Conference, 2006. ACSAC'06. 22nd Annual

Tipo de publicación: Miscellaneous

Tipo de publicación: Journal Article

Publicado en: ACM Transactions on Information and System Security (TISSEC)

Descripción:

The elicitation of software security requirements in early stages of software development life cycle is an essential task. Using security requirements templates could help practitioners to identify implied software security requirements from functional requirements in the context of a software system. In this paper, we replicated a previous study that analyzed the effectiveness of security requirements templates to support the identification of security requirements. Our objective was to evaluate this approach and compare the applicability of the previous findings. We conducted the first replication of the controlled experiment in 2015, and subsequently conducted two differentiated replications in 2018. We evaluated the responses of 33 participants in terms of quality, coverage, relevance and efficiency and discussed insights regarding the impact of context factors. Participants were divided into treatment (security requirements templates) and control groups (no templates). Our findings support some previous results: treatment group performed significantly better than the control group in terms of the coverage of the identified security requirements. Besides, the requirements elicitation process performed significantly better in relevance and efficiency metrics in two of the three replications. Security requirements templates supported participants to identify a core set of the security requirements and participants were favorable towards the use of templates in identifying security requirements.

Tipo de publicación: Conference Paper

Publicado en: 14th Iberian Conference on Information Systems and Technologies (CISTI)

Descripción:

Smart agriculture is an active research field. Currently, many researchers are working on the construction of platforms directed to improve efficiency, crop processes, and data awareness. However, it is common that developers focus on data monitoring instead of the data relevance for decision making or the costs associated with the creation of monitoring platforms. In this paper, we present a classification of the data required by researchers on the construction of decision-support systems applied to smart agriculture processes. By using this classification, the user can define which data are relevant according to the characteristics of the problem that needs to be solved.We have applied the classification to data recollected in a study case conducted by the end of last year. Besides, we identify a list of agronomic and climatic variables commonly used in the construction of decision support systems. We apply the classification to this list of variables as an example for researchers. As a conclusion, this typification permits the researcher to identify data that has to be monitored and controlled, and data that does not have to be measured, the later based on the data characteristics and utility for the farmer.

Tipo de publicación: Conference Paper

Publicado en: 2019 IV Jornadas Costarricenses de Investigación en Computación e Informática (JoCICI)

Descripción:

Fraud detection in financial statements is a constant and laborious task in the audit area. Traditionally, this task has been performed by experts, limiting its scope due to restrictions in manual processing capacity. In recent years, there has been an increase in the use of data mining and machine learning techniques to review in a comprehensive and automated way the organizations’ financial statements. The objective of this study was to analyze data mining and machine learning techniques used in financial fraud detection, in order to characterize the reported algorithms and the metrics used to evaluate their effectiveness. For this, a systematic mapping study of 67 studies was carried out. Our results show that since 2015 there was an upturn in the amount of studies that use these techniques for fraud detection in financial statements, where vector support machines are the most used technique, with 19 studies, followed by artificial neural networks, with 15 studies, and decision trees, with 11 studies. Effectiveness was assessed by the degree of precision with which the implemented techniques detected real fraud cases, obtaining values between 70% and 99.9%.

Tipo de publicación: Journal Article

Publicado en: Revista Ibérica de Sistemas e Tecnologias de Informação

Descripción:

Software testing is an essential activity in software development projects for delivering high quality products. In a previous study, we reported the results of a survey of software engineering practices in the Costa Rican industry. To make a more in depth analysis of the specific software testing practices among practitioners, we replicated a previous survey conducted in South America. Our objective was to characterize the state of the practice based on practitioners use and perceived importance of those practices. This survey evaluated 42 testing practices grouped in three categories: processes, activities and tools. A total of 92 practitioners responded to the survey. The participants indicated that: (1) tasks for recording of the results of tests, documentation of test procedures and cases, and re-execution of tests when the software is modified are useful and important for software testing practitioners. (2) Acceptance and system testing are the two most useful and important testing types. (3) Tools for recording defects and the effort to fix them (bug tracking) and the availability of a test database for reuse are useful and important. Regarding use and implementation of practices, the participants stated that (4) Planning and designing of software testing before coding and evaluating the quality of test artifacts are not a regular practice. (5) There is a lack of measurement of defect density and test coverage in the industry; and (6) tools for automatic generation of test cases and for estimating testing effort are rarely used. This study gave us a first glance at the state of the practice in software testing in a thriving and very dynamic industry that currently employs most of our computer science professionals. The benefits are twofold: for academia, it provides us with a road map to revise our academic offer, and for practitioners it provides them with a first set of data to benchmark their practices.

Tipo de publicación: Journal Article

Publicado en: Journal of Software Engineering Research and Development

Descripción:

In recent years, different tools have been proposed to automate the evaluation of the web contents accessibility criteria proposed by the World Wide Web Consortium (W3C). These tools can verify that a website complies with web accessibility standards such as WCAG, but the results of the evaluation may depend on the tool used. This study identifies and characterizes web accessibility assessment tools through a systematic literature mapping. A total of 50 articles were analyzed. We report the accessibility criteria evaluated by each tool as well as the main challenges related to the evaluations.

Tipo de publicación: Conference Paper

Publicado en: 2019 IV Jornadas Costarricenses de Investigación en Computación e Informática (JoCICI)

Descripción:

Antecedentes: las tecnologías móviles pueden coadyuvar en el cambio de comportamientos alimentarios en personas con exceso de peso. Sin embargo, la evidencia con aplicaciones móviles adaptadas en el contexto latinoamericano es limitada. Objetivo: evaluar cambios antropométricos y satisfacción personal en una intervención educativa para personas con exceso de peso, la cual incluyó el uso de una aplicación móvil (NutriMetas). Materiales y métodos: estudio experimental clásico con diseño de pre-post prueba en personas con exceso de peso (IMC >25,0 y ≤34,9 kg/m2). Los participantes asistieron a sesiones de educación nutricional y registraron sus metas en la aplicación NutriMetas (grupo experimental, n=26) o en papel (grupo control, n=26). Se utilizaron modelos de regresión mixto multinivel para evaluar diferencias antropométricas (peso, IMC, circunferencia de cintura y porcentaje de grasa) entre los grupos. Resultados: el grupo experimental obtuvo una pérdida de peso promedio de 2,1±2,6 kg, en comparación con 0,7±1,6 kg para el grupo control (p=0,08). La interacción entre grupo y tiempo mostró una tendencia a la significancia en el IMC (p=0,064) y en la pérdida de peso (p=0,082), que podría ser de importancia desde el punto de vista clínico. Los atributos de apariencia, efectividad, eficiencia y facilidad de aprendizaje de NutriMetas fueron valorados favorablemente por la mayoría de los participantes. Conclusiones: el uso de NutriMetas como parte de una intervención educativa resultó ser una herramienta efectiva para los pacientes.

Tipo de publicación: Journal Article

Publicado en: Perspectivas en Nutrición Humana

Descripción:

It is very common to interact with notifications every day with our mobile devices. Notifications have advantages and disadvantages. They bring information for the user, but they are also interruptions. In this study, the authors provide a solution for scheduling events through notifications. They created an application using the Google Calendar platform and the Swift programming language to respond to events through notifications. Then, the participants evaluated the application through the usability scale of the system (SUS), and the results were positive. The authors received excellent comments and feedback from the participants in the evaluation.

Tipo de publicación: Conference Paper

Publicado en: 2019 IV Jornadas Costarricenses de Investigación en Computación e Informática (JoCICI)

Tipo de publicación: Conference Paper

Publicado en: 2020 15th Iberian Conference on Information Systems and Technologies (CISTI)

Tipo de publicación: Conference Paper

Publicado en: 2019 IV Jornadas Costarricenses de Investigación en Computación e Informática (JoCICI)

Descripción:

Obesity and a sedentary lifestyle are relevant issues in today’s society. Even though different resources can be used to approach this problem, technology provides endless possibilities to fight against this problem. This article presents the results of a model to create augmented reality games where goals are achieved by doing physical activity (moving between different places). In order to evaluate the model, a prototype was built and presented to 50 participants. The results obtained indicated that an important percentage of the interviewees were attracted to the idea of playing a game to increase their physical activity.

Tipo de publicación: Conference Paper

Publicado en: Proceedings of the 10th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 5: HEALTHINF, (BIOSTEC 2017)

Tipo de publicación: Conference Paper

Publicado en: Proceedings of the XXI Iberoamerican Conference on Software Engineering, Bogota, Colombia, April 23-27, 2018

Descripción:

Software processes improvement is the sequence of tasks and techniques that are carried out for the planning and application of the activities necessary for the effective process definition in a technology unit. Models such as the CMMI and standards such as ISO/IEC 15504 establish the quality requirements quality models that serve as guidelines for performing process improvement. However, the implementation of a process improvement initiative in a public sector institution, with limited resources, a rigid structure, and legislation to comply with, must be carried out according to the specific characteristics of the technology unit as to be accepted by the development teams. This article presents a report on the experience of applying a combination of strategies to carry out a process improvement project focused on quality management in a technology unit of a public educational. Our objective is to provide evidence and discuss the lessons learned related to the combination of strategies and models in the planning and implementation of process improvement. Our study shows how the IDEAL model and the GQM, NTCGR, COBIT, SQA, BPMN and TAM strategies were combined to define and implement a program for achieving continuous process improvement in the institution.

Tipo de publicación: Conference Paper

Publicado en: 2018 7th International Conference On Software Process Improvement (CIMPS)

Descripción:

Metaphors of ordinary concepts are intensively used in computer science for naming abstract concepts and for designing users interfaces. Metaphors are mappings from a source domain (e.g., a stream) to a target domain (e.g., a sequence of bytes). Typically computing phenomena are explained using incoherent discourses at the source domain, formed by metaphors taken from a diversity of origins. Nonetheless, versatility of metaphors allows for the creation of coherent discourses in the origin domain that map the target computing discourse, and we call them allegories. The limited number of existing studies about this topic has compared only textual allegories, visual allegories, and the traditional unconnected metaphors. Although their findings are heterogeneous, equal effectiveness is the most frequent empirical result between these three types of metaphors. Furthermore, we have not found any study about oral allegories, in spite of oral being the most used modality for metaphors in computer science education. This article experimentally compares the effects of oral allegories and oral metaphors on a complex problem‐solving task. As in previous studies, our results did not find any significant differences on support or detriment of oral allegories. Our results support new metaphor theories posing that the context significantly influences the metaphors’ efficacy, and encourages future research about the interaction between context and allegories.

Tipo de publicación: Journal Article

Publicado en: Computer Applications in Engineering Education

Descripción:

The importance of concurrent and distributed programming is increasing on Computer Science curricula. This exploratory research identifies additional notions required by the official topics of "Parallel and Concurrent Programming" course, taught at the University of Costa Rica. This paper characterizes previous knowledge that students had about these notions and the extracurricular effort that they made to overcome the lack of notions. Findings show that students were able to overcome the lack of notions at expense of more extracurricular effort. Exploratory evidence indicates that students' election of professors in previous courses influenced their performance and extracurricular effort in the parallel programming course.

Tipo de publicación: Conference Paper

Publicado en: 2019 IV Jornadas Costarricenses de Investigación en Computación e Informática (JoCICI)

Descripción:

Hanabi is a cooperative card game in which communication plays a key role. The game provides an interesting challenge for AI agents, because the game state is only partially observable, and the game limits what players can tell each other. This limit on communication channels is similar to a common scenario in system security research, and has been researched extensively in that context, for example by bypassing a system's isolation by establishing a covert communication channel. Such channels can be established through anything that the sending party can influence and the receiving party can observe, such as photonic emission, resource contention, or latency. In this paper, we present Hanabi agents that utilize timing as a covert channel so effectively that they can eschew the communicative actions provided by the game entirely. In addition to a thorough evaluation of the effectiveness of our approach, and a comparison to other Hanabi agents, we provide its context in the area of security, and an outlook on how it could be related to human behavior in future work.

Tipo de publicación: Conference Paper

Publicado en: Proceedings of the 14th International Conference on the Foundations of Digital Games

Tipo de publicación: Conference Paper

Publicado en: 2019 IV Jornadas Costarricenses de Investigación en Computación e Informática (JoCICI)

Tipo de publicación: Conference Paper

Publicado en: Sixteenth Artificial Intelligence and Interactive Digital Entertainment Conference