Sobre la estética de las intensidades en el cine digital

En este escrito se busca dar sentido a la diversidad de filmes actuales y conceptualizar sus propuestas estéticas mediante el hallazgo de sus aspectos figurales y figurativos; es decir, proceder a la lectura desde algunos de los elementos que los hacen perceptibles y orgánicos para el espectador. No se trata de analizar cada uno de los elementos del cine digital en sí mismos, sino de estudiar la manera en que están emplazados en el hecho fílmico para ser el môtus del filme

Energy efficiency in discrete-manufacturing systems: insights, trends, and control strategies

Since the depletion of fossil energy sources, rising energy prices, and governmental regulation restrictions, the current manufacturing industry is shifting towards more efficient and sustainable systems. This transformation has promoted the identification of energy saving opportunities and the development of new technologies and strategies oriented to improve the energy efficiency of such systems. This paper outlines and discusses most of the research reported during the last decade regarding energy efficiency in manufacturing systems, the current technologies and strategies to improve that efficiency, identifying and remarking those related to the design of management/control strategies. Based on this fact, this paper aims to provide a review of strategies for reducing energy consumption and optimizing the use of resources within a plant into the context of discrete manufacturing. The review performed concerning the current context of manufacturing systems, control systems implemented, and their transformation towards Industry 4.0 might be useful in both the academic and industrial dimension to identify trends and critical points and suggest further research lines.Peer ReviewedPreprin

Cultivating a Community of Practice Among Student Teachers and Cooperating Teachers

This study examined the experience of four student teachers and their supervising teachers who participated in a Community of Practice (CoP) during their internship semester. Their experience can be separated into the four key components of a Community of Practice: (a) structure, (b) processes, (c) content, and (d) conditions

Economic model predictive control for optimal operation of combined heat and power systems

© 2019. ElsevierThe use of decentralized Combined Heat and Power (CHP) plants is increasing since the high levels of efficiency they can achieve. Hence, to determine the optimal operation of these systems in the changing energy market, the time-varying price profiles for both electricity as well as the required resources and the energy-market constraints should be considered into the design of the control strategies. To solve these issues and maximize the profit during the operation of the CHP plant, this paper proposes an optimization-based controller, which will be designed according to the Economic Model Predictive Control (EMPC) approach. The proposed controller is designed considering a non-constant time step to get a high sampling frequency for the near instants and a lower resolution for the far instants. Besides, a soft constraint to met the market constraints for the sale of electric power is proposed. The proposed controller is developed based on a real CHP plant installed in the ETA research factory in Darmstadt, Germany. Simulation results show that lower computational time can be achieved if a non-constant step time is implemented while the market constraints are satisfied.Peer ReviewedPostprint (author's final draft

Optimal operation of combined heat and power systems: an optimization-based control strategy

The use of decentralized Combined Heat and Power (CHP) plants is increasing since the high levels of efficiency they can achieve. Thus, to determine the optimal operation of these systems in dynamic energy-market scenarios, operational constraints and the time-varying price profiles for both electricity and the required resources should be taken into account. In order to maximize the profit during the operation of the CHP plant, this paper proposes an optimization-based controller designed according to the Economic Model Predictive Control (EMPC) approach, which uses a non-constant time step along the prediction horizon to get a shorter step size at the beginning of that horizon while a lower resolution for the far instants. Besides, a softening of related constraints to meet the market requirements related to the sale of electric power to the grid point is proposed. Simulation results show that the computational burden to solve optimization problems in real time is reduced while minimizing operational costs and satisfying the market constraints. The proposed controller is developed based on a real CHP plant installed at the ETA research factory in Darmstadt, Germany.Peer ReviewedPostprint (author's final draft

Sistema electrocoagulación-sorción en continuo para Remoción de Colorantes, verde malaquita y remazol amarillo en Solución Acuosa.

Se consideran aguas residuales al agua que ha sido utilizada en las actividades diarias de una ciudad (doméstica, comerciales, industriales y de servicios). Las aguas residuales provenientes de las industrias textiles presentan una gran contaminación por colorantes, deteriorando así la calidad del agua y causando un efecto nocivo al medio ambiente. Se acoplaron dos operaciones unitarias (proceso electrocoagulación y sorción) en un continuo para el tratamiento de soluciones acuosas con colorantes; remazol, amarillo y verde malaquita. La finalidad es determinar la eficiencia de remoción de dichos colorantes con ambas operaciones

An optimization-based control strategy for energy efficiency of discrete manufacturing systems

In order to reduce the global energy consumption and avoid highest power peaks during operation of manufacturing systems, an optimization-based controller for selective switching on/off of peripheral devices in a test bench that emulates the energy consumption of a periodic system is proposed. First, energy consumption models for the test-bench devices are obtained based on data and subspace identification methods. Next, a control strategy is designed based on both optimization and receding horizon approach, considering the energy consumption models, operating constraints, and the real processes performed by peripheral devices. Thus, a control policy based on dynamical models of peripheral devices is proposed to reduce the energy consumption of the manufacturing systems without sacrificing the productivity. Afterward, the proposed strategy is validated in the test bench and comparing to a typical rule-based control scheme commonly used for these manufacturing systems. Based on the obtained results, reductions near 7% could be achieved allowing improvements in energy efficiency via minimization of the energy costs related to nominal power purchased.Peer ReviewedPostprint (author's final draft

Propuesta de mejora aplicando la metodología 5s en el almacén de materiales y repuestos de una empresa constructora

El autor no autoriza la publicación de la tesis

El impacto del estrés en la productividad en el área de Créditos Mi Banco semestre 2017 – I y una propuesta de mejora

La siguiente investigación se debe a que en la actualidad el deporte se ha convertido en una de las actividades más gratificantes para resolver algunos problemas como el estrés y todas aquellas enfermedades que la añejan al hombre; puesto que lleva al cuerpo a un estado de tranquilidad, relajación y sobre todo a mejorar la salud. Tal es el caso de la agencia Mi Banco – Chiclayo, pues al no contar con un sistema de ayuda para contrarrestar los problemas que genera el estrés laboral; por lo consiguiente esto llega a generar un bajo desempeño en las actividades dentro de la empresa: el objetivo principal es proponer un programa de entrenamiento funcional que ayude en el grado de estrés y por ende en su mejora de productividad. Así mismo, el tipo de investigación es de carácter cualitativo: el diseño de investigación es no experimental transaccional descriptivo simple. Para ello se elaboró para determinar el impacto del estrés en la productividad en el área de créditos Mi banco. Se propuso la elaboración de una encuesta conformado por 20 asesores de negocios de créditos en la Agencia cercado Mi Banco ubicado en Calle Lora y cordero 475 Distrito de Chiclayo, Provincia de Chiclayo; se describió las 7 dimensiones propuestas en la encuesta propuesta tales como clima organizacional, estructura organizacional. Territorio organizacional, tecnología, influencia del líder, falta de cohesión y respaldo de grupo. Para luego determinar el nivel de estrés de los asesores. Finalmente se propuso un programa de entrenamiento funcional basado en técnicas de relajación para poder disminuir el nivel de estrés y mejorar el desempeño de productividad en el área de créditos, por lo cual hará que los asesores sean más productivos y la agencia genere mayores utilidades