Complexity in forecasting and predictive models

Te challenge of this special issue has been to know the state of the problem related to forecasting modeling and the creation of a model to forecast the future behavior that supports decision making by supporting real-world applications. Tis issue has been highlighted by the quality of its research work on the critical importance of advanced analytical methods, such as neural networks, sof computing, evolutionary algorithms, chaotic models, cellular automata, agent-based models, and fnite mixture minimum squares (FIMIX-PLS).info:eu-repo/semantics/publishedVersio

Credit Network Payment Systems: Security, Privacy and Decentralization

A credit network models transitive trust between users and enables transactions between arbitrary pairs of users. With their flexible design and robustness against intrusions, credit networks form the basis of Sybil-tolerant social networks, spam-resistant communication protocols, and payment settlement systems. For instance, the Ripple credit network is used today by various banks worldwide as their backbone for cross-currency transactions. Open credit networks, however, expose users’ credit links as well as the transaction volumes to the public. This raises a significant privacy concern, which has largely been ignored by the research on credit networks so far. In this state of affairs, this dissertation makes the following contributions. First, we perform a thorough study of the Ripple network that analyzes and characterizes its security and privacy issues. Second, we define a formal model for the security and privacy notions of interest in a credit network. This model lays the foundations for secure and privacy-preserving credit networks. Third, we build PathShuffle, the first protocol for atomic and anonymous transactions in credit networks that is fully compatible with the currently deployed Ripple and Stellar credit networks. Finally, we build SilentWhispers, the first provably secure and privacy-preserving transaction protocol for decentralized credit networks. SilentWhispers can be used to simulate Ripple transactions while preserving the expected security and privacy guarantees

Evaluación de una unidad didáctica de innovación sobre el siglo XVII a través de pensamiento histórico y recursos visuales

©2023. The authors. This document is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ This document is the published version of a Published Work that appeared in final form in AREAS. To access the final edited and published work see https://doi.org/10.6018/areas.554421This article has analyzed the implementation of a didactic unit of innovation based on the 17th century in a third year of ESO during the second period of practices of the master’s degree in Teacher Training at the University of Murcia. To do this, a theoretical framework based on historical thinking and the strategies and teaching resources used is provided. Next, a brief description of the didactic unit is made, as well as the method used to carry out the research, exposing its objectives, the context and the information collection instruments, which basically consist of two questionnaires passed before and after implementation. of the training unit. Finally, the results of these questionnaires have been presented and analyzed based on the main objectives of the work, and finally the educational implications that the results and conclusions obtained have been discussed. The results and conclusions have been positive.Este artículo ha analizado la implementación de una unidad didáctica de innovación basada en el siglo XVII en un curso de tercero de ESO durante el segundo periodo de prácticas del Máster de Formación del Profesorado de la Universidad de Murcia. Para ello, se dispone un marco teórico basado en el pensamiento histórico y las estrategias y los recursos didácticos utilizados. Seguidamente, se hace una breve descripción de la unidad didáctica, así como el método utilizado para llevar a cabo la investigación exponiendo sus objetivos, el contexto y los instrumentos de recogida de información, que básicamente consisten en dos cuestionarios pasados antes y después de la implementación de la unidad formativa. Por último, los resultados de estos cuestionarios han sido expuestos y analizados en base a los objetivos principales del trabajo, y finalmente se comentan las implicaciones educativas que pueden tener los resultados y las conclusiones obtenidas. Los resultados y las conclusiones han sido positivos