The myoelectric interfaces are being used in rehabilitation technology, assistance and as an input device. This review focuses on an insightful analysis of the data acquisition system of EMG signals from these interfaces. According to applications reported in research articles of the last five years, the properties of the sensors, the number of channels, the pre-processing of the EMG signal, as well as the software and hardware used were identified. This analysis was performed for the following applications: monitoring of muscular activation for rehabilitation, muscle activation plans, and identification of possible pathologies, exoskeletons, electric of wheelchairs, prosthetics control, myoelectric bracelets, handwriting recognition and silent speech recognition. The results presented in this review become a guide of recommendations for the myoelectric signal processing according to the application of the interface. The main developments, degrees of research and open challenges are also presented in this direction.
27 February 2019 in International Journal of Emerging Technologies in Learning (iJET)
In this Systematic Review of the Literature (SRL) the term “technological competence” is analyzed. The analysis is conducted within the areas of knowledge in which the term has been studied, considering the definitions that have been associated to the term, the approaches proposed by the authors that make use of the term, the transformation of the concept throughout the time, and the boundaries of application with other similar terms, such as technological capability and technological skill. A total of 140 publications focused on technological competences are analyzed. The publications correspond to a time span ranging from 1994 to 2016, and include research articles from recognized databases and, to a lesser extent, gray literature articles. Finally, the term technological competence applied in the productive sector is redefined such as it allows focusing on projects for technological absorption or training in industry.
In this work performance results of Bluetooth v2.0+ EDR are presented. Measurement of file transfer delay (FTD) is done with variable file size and variable distance between sender and receiver, in an indoor environment. In this scenario the presence of obstacles between nodes are almost inevitable, hence a comparison of FTD with and without a physical obstacle is presented. FTD is a very useful metric as it gives the overall performance evaluation. The knowledge of this metric is fundamental for the development of multimedia applications, as real time communication is an important constraint, so minimum delays should be guaranteed . The results show that the delay average in the transfer of files is a lineal function with file size and the distance between sender and receiver. The importance to study and analyze Bluetooth Technology is that it is already installed in hundreds of millions of devices, such as cell phones, PDA's, etc. Therefore BT is very attractive for ubiquitous computing with multimedia capabilities.
This research explores and analyzes the context of the renewable energies industry sector of Baja California, Mexico, regarding the adoption, appropriation, knowledge and usage of Information and Communication Technologies (ICTs) by focusing on human resources, mainly its business managers and directors, as key actors of strategic plans in terms of research and technological development. For this task, a Technological Competencies Profile (TCP), meant for evaluating the incorporation of ICTs by business leaders, was constructed by reviewing the definition of “technological competency” in 140 publications, and by considering the European e-Competence Framework (e-CF), the Skills Framework for the Information Age (SFIA), and other related guidelines. This profile was later applied to analyze 13 SMEs and their leaders’ technological competencies. The investigation was further enriched with the information extracted from 13 interviews made with renewable energy experts in Baja California. The conclusions of this study show that, although SME leaders do have knowledge of ICTs and use them effectively for their own communicative and personal purposes, they do not consider them as a part of their business operation that can optimize their processes and impact its innovative capabilities.
30 October 2019 in REVISTA DE CIENCIAS TECNOLÓGICAS
The so-called Industry 4.0 supports its emergence and growth in the use of artificial intelligence techniques for the development of production systems whose capacity, efficiency and adaptability exceed the performance of current computer-based systems. Intelligent manufacturing corresponds to the digitization and interconnection of devices for the construction of production and supply chains that share a continuous flow of information. This revolution involves the development of technologies such as the Internet of Things, data analytics and cyber-systems aligned with machine learning, among others. The development and sustainability of these advanced manufacturing systems represent an area of opportunity for the growth of the technological competitiveness of regional economies. There are, however, training needs among engineering professionals for the development of specific updated technological competences; as well as a need of general conditions for the establishment of innovation networks between academia and the productive sector. This paper uses bibliographic techniques to examine existing literature and conducts a review on Industry 4.0. As a result, it presents an overview of the related technological trends and discuss the role of higher education institutions in the development of competitive human capital. There are also multiple areas of opportunity in the medium and long term to strength university-industry collaboration programs related to this adoption.
1 June 2024 in Revista Iberoamericana de Educación Superior
Los espacios universitarios no se encuentran libres de la existencia de violencia de género, particularmente de hostigamiento y acoso sexual. En respuesta, las instituciones de educación superior han desarrollado acciones diversas, entre las que se incluyen la sensibilización, el desarrollo de protocolos y los mecanismos de atención. Empero, el impacto de estas acciones en la reducción de la incidencia del fenómeno no ha sido abordado suficientemente. El propósito del presente estudio fue identificar la prevalencia de acoso y hostigamiento sexual en estudiantes inscritos en una universidad pública estatal, ante las acciones institucionales emprendidas para su erradicación. Se desarrolló una investigación de tipo cuantitativo y alcance descriptivo, donde se aplicó un cuestionario a 396 estudiantes de una misma facultad. Entre los hallazgos se confirma la extensión del fenómeno, su normalización y la insuficiente difusión y aplicación de las políticas y el protocolo existente.