Chemical Engineering courses are often designed to be divided into two types of lessons: lecture ... more Chemical Engineering courses are often designed to be divided into two types of lessons: lecture and experimental. In the second one, students develop the knowledge in a hands-on way by attending a pilot plant equipped with different instruments. Hence, a thorough understanding of the different unit operations is needed and, therefore, the implications of changing the operational variables in a process. In this context, the use of new digital technologies is emerging as support tools with the aim of both improving the learning and the motivation of students. Specifically, Augmented Reality (AR) provides a modified physical environment overlaid with multimedia content in the form of text, graphics, video and/or audio. Thus, the incorporation of AR systems in the learning of science has proven to be useful, because it can present multiple benefits for students and teachers related to the improvement of spatial abilities, the increase of memory retention, the decrease of cognitive over...
En este trabajo se describen los efectos producidos por algunos sismos importantes en construccio... more En este trabajo se describen los efectos producidos por algunos sismos importantes en construcciones de la ciudad de Morelia, Michoacán, la morfología urbana, las características de los suelos, las fallas sísmicas locales, así como la evolución de parámetros de diseño sísmico que se han propuesto en los reglamentos de diseño locales. Se señala la importancia de la Red Sísmica Nicolaita, compuesta de diez estaciones acelerométricas, en la obtención de registros que permitan mitigar el riesgo sísmico y con los cuales ha sido posible establecer diferencias apreciables del movimiento de los suelos en la ciudad y que deben ser consideradas en estudios de peligro. También, se presentan algunos acelerogramas registrados y espectros de respuesta. El objetivo de este trabajo es mostrar que, de acuerdo con la historia sísmica y los daños producidos por eventos sísmicos pasados, la ciudad de Morelia es un sitio propenso a sismos destructivos, lo que vuelve fundamental contar con una red de mon...
Chemical Engineering is a complex discipline that is mainly applied to the industrial context, wh... more Chemical Engineering is a complex discipline that is mainly applied to the industrial context, which makes it difficult to approach real equipment and systems in the classroom to students. Nevertheless, Information and Communication Technologies (ICTs) are particularly useful to encourage active and autonomous learning, normally associated with deeper levels of engagement and understanding of the subjects taught. In this way, several studies have demonstrated that immersion has the potential to increase learning experiences and improve creativity and engagement, Virtual Reality (VR) being a remarkable example. In this context, we created and shared with students two immersive resources based on VR: (a) a laboratory 360° video tour, which was used to disseminate the Chemical Engineering Degree in an Open Door Days organized for high school students; and (b) an experiential learning tool integrated with Moodle, which was available previously to face-to-face practical lessons of the su...
The El Salvador Fault Zone (ESFZ) is part of the Central American Volcanic Arc and accommodates t... more The El Salvador Fault Zone (ESFZ) is part of the Central American Volcanic Arc and accommodates the oblique separation movement between the forearc sliver and the Chortis block (Caribbean Plate). In this work, a triclinic transtension model was applied to geological (fault-slip inversion, shape of volcanic calderas), seismic (focal mechanisms) and geodetic (GPS displacements) data to evaluate the characteristics of the last stages of the kinematic evolution of the arc. The El Salvador Fault Zone constitutes a large band of transtensional deformation whose direction varies between N90° E and N110° E. Its dip is about 70° S because it comes from the reactivation of a previous extensional stage. A protocol consisting of three successive steps was followed to compare the predictions of the model with the natural data. The results show a simple shear direction plunging between 20° and 50° W (triclinic flow) and a kinematic vorticity number that is mostly higher than 0.81 (simple-shearing...
Second-generation bioethanol is considered a suitable option for replacing fossil fuels. Agricult... more Second-generation bioethanol is considered a suitable option for replacing fossil fuels. Agricultural residues are being studied as feedstocks for sugar generation, which are in turn converted into ethanol. Among them, barley straw (BS) is a promising raw material, due to its high abundance, lignocellulosic composition and lack of other practical applications. Under these assumptions, the central aim of this study is to suggest an efficient bioethanol production scheme from BS at different levels of integration in co-fermentation with Escherichia coli SL100, including separate hydrolysis and co-fermentation (SHCF), simultaneous saccharification and co-fermentation (SSCF), and presaccharification and simultaneous saccharification and co-fermentation (PSSCF), using the water-insoluble solid (WIS) and slurry fractions obtained after steam explosion (SE) pretreatment. The best results in terms of ethanol yield were achieved following the SHCF process, using the WIS and the slurry as sub...
Como aporte para la solución del problema de los desechos de aceite de automóvil que se genera en... more Como aporte para la solución del problema de los desechos de aceite de automóvil que se genera en el país, se<br> aplicó un método de transformación de los aceites lubricantes de motor usados. La destilación del aceite usado<br> produjo un combustible de características muy similares al Diesel comercial y como subproducto un fluido con<br> características físicas de lodo asfaltico. El residuo de la destilación se sometió a un proceso de calcinación a 550<br> ºC, obteniéndose un material carbonáceo, el cual se caracterizó por las técnicas de análisis elemental CHNS-O,<br> microscopia electrónica de barrido, análisis EDX, DRX, FT-IR y área superficial BET. Los resultados obtenidos<br> demuestran que se obtuvo un material con alto contenido de carbono y con algunos elementos metálicos<br> incluidos en su composición. Se realizaron pruebas comparativas contra un carbón activado comercial de origen<br> vegetal, para observar la capacidad de...
Spanish abstract: En este trabajo se analiza el impacto que la industria automotriz de Aguascalie... more Spanish abstract: En este trabajo se analiza el impacto que la industria automotriz de Aguascalientes tiene sobre la generacion del empleo en la entidad, dado que considera las actividades economicas de exportacion mas relevantes en el sector de las manufacturas. Resulta interesante hacer este analisis en un contexto en el cual el comercio internacional en las ultimas decadas se ha articulado a traves de las llamadas Cadenas Globales de Valor (CGV) concepto que refiere a la division internacional de tareas que responde a la fragmentacion geografica de los procesos productivos para reducir costos aprovechando las politicas de apertura comercial y que para el caso del sector se ubica en el eslabon de ensamblado de bienes finales con bajo valor agregado en la region de America del Norte. Con esta finalidad se calculo el multiplicador del empleo que tiene el sector automotriz de exportacion respecto del resto de la economia local no exportadora, para lo cual se utilizo el Metodo de la B...
O artigo focaliza a espiritualidade como uma das dimensoes promotoras do bem-estar no ambiente de... more O artigo focaliza a espiritualidade como uma das dimensoes promotoras do bem-estar no ambiente de trabalho e mostra o valor da espiritualidade nas organizacoes. Enfatizando a contribuicao da vivencia da espiritualidade pessoal e grupal no ambiente de trabalho para minimizar as relacoes competitivas e conflitivas entre as pessoas, este trabalho destaca que as organizacoes que oportunizam espacos e tempos para fortalecer a dimensao espiritual dos colaboradores no ambiente de trabalho e os resultados do produto dessas organizacoes sao melhores. O artigo descreve a gestao da espiritualidade nas organizacoes como uma estrategia criativa que, a longo prazo, traz resultados surpreendentes para as organizacoes, dai a razao do crescente numero de pesquisas academicas realizadas contemplando a tematica da espiritualidade. Palavras-chave: Bem-estar. Espiritualidade. Ambiente de trabalho. Well-being within the work environment: spirituality as a differential Abstract In this article spiritualit...
This paper argues that the governance mechanism is essential for promoting end product quality. H... more This paper argues that the governance mechanism is essential for promoting end product quality. Hierarchy facilitates conformance quality but decreases efficiency in terms of incentives. One incentive-enhancing solution might be to move from a hierarchy towards more market-oriented organizational forms. This would solve the problem because, as residual claimants appear along the value chain, they automatically balance both quantity and quality to maximize their residual income. However, such hybrid solutions hinder conformance quality because they do not achieve such efficient coordination as hierarchy. The governance mechanism must therefore be complemented by a set of safeguards designed to improve coordination amongst the parties. Resulting mechanism of governance is more complex but it is also more useful for promoting high quality. We find empirical evidence in a set of international cases of quality brand names. First, we observe that more market-oriented governance mechanisms...
XLII JORNADAS DE AUTOMÁTICA : LIBRO DE ACTAS, 2021
La monitorización continua tanto de plagas que afectan a los cultivos hortofrutícolas en agricult... more La monitorización continua tanto de plagas que afectan a los cultivos hortofrutícolas en agricultura intensiva de invernadero, como de la lucha biológica, utilizada en este tipo de cultivos para combatir las plagas de una forma sostenible con el medio ambiente son esenciales en este sector. Actualmente, en la mayoría de los casos este control se realiza de forma manual (no siempre sin dificultad), lo que requiere a los agricultores de una supervisión continua para poder detectar, en el menor tiempo posible, cualquier brote que afecte a sus cultivos. En este trabajo se presenta una revisión de tecnologías habilitadoras para permitir una monitorización continua, sostenible y de forma autónoma en este sector estratégico en España. Estas tecnologías se integran en una propuesta de sistema de ayuda a la decisión para el control de plagas y control biológico.
Demand & Capacity Management solutions are key SESAR (Single European Sky ATM Research) research ... more Demand & Capacity Management solutions are key SESAR (Single European Sky ATM Research) research projects to adapt future airspace to the expected high air traffic growth in a Trajectory Based Operations (TBO) environment. These solutions rely on processes, methods and metrics regarding the complexity assessment of traffic flows. However, current complexity methodologies and metrics do not properly take into account the impact of trajectories’ uncertainty to the quality of complexity predictions of air traffic demand. This paper proposes the development of several Bayesian network (BN) models to identify the impacts of TBO uncertainties to the quality of the predictions of complexity of air traffic demand for two particular Demand Capacity Balance (DCB) solutions developed by SESAR 2020, i.e., Dynamic Airspace Configuration (DAC) and Flight Centric Air Traffic Control (FCA). In total, seven BN models are elicited covering each concept at different time horizons. The models allow eva...
International Journal of Aerospace Engineering, 2019
Performing Continuous Climb Operation (CCO) procedures enable the reduction of the environmental ... more Performing Continuous Climb Operation (CCO) procedures enable the reduction of the environmental footprint and the improvement of the trajectory efficiency when individually operated. However, its operation may affect negatively the overall operational efficiency at Terminal Manoeuvring Areas (TMAs). The estimation of capacity is a matter of paramount importance to all airport planning and analyzing the capacity effects of this particular operational technique on a certain scenario will definitely help on evaluating its potential applicability. In this paper, departure runway capacity at the Adolfo Suárez Madrid-Barajas airport was operationally evaluated when introducing CCOs. The considered trajectories consisted of multiobjective optimized CCOs based on the optimal control theory, using the pseudospectral direct numerical method. These scenarios allowed addressing of the incremental variations of CCOs versus conventional departures, through fast time simulation, with the objectiv...
Chemical Engineering courses are often designed to be divided into two types of lessons: lecture ... more Chemical Engineering courses are often designed to be divided into two types of lessons: lecture and experimental. In the second one, students develop the knowledge in a hands-on way by attending a pilot plant equipped with different instruments. Hence, a thorough understanding of the different unit operations is needed and, therefore, the implications of changing the operational variables in a process. In this context, the use of new digital technologies is emerging as support tools with the aim of both improving the learning and the motivation of students. Specifically, Augmented Reality (AR) provides a modified physical environment overlaid with multimedia content in the form of text, graphics, video and/or audio. Thus, the incorporation of AR systems in the learning of science has proven to be useful, because it can present multiple benefits for students and teachers related to the improvement of spatial abilities, the increase of memory retention, the decrease of cognitive over...
En este trabajo se describen los efectos producidos por algunos sismos importantes en construccio... more En este trabajo se describen los efectos producidos por algunos sismos importantes en construcciones de la ciudad de Morelia, Michoacán, la morfología urbana, las características de los suelos, las fallas sísmicas locales, así como la evolución de parámetros de diseño sísmico que se han propuesto en los reglamentos de diseño locales. Se señala la importancia de la Red Sísmica Nicolaita, compuesta de diez estaciones acelerométricas, en la obtención de registros que permitan mitigar el riesgo sísmico y con los cuales ha sido posible establecer diferencias apreciables del movimiento de los suelos en la ciudad y que deben ser consideradas en estudios de peligro. También, se presentan algunos acelerogramas registrados y espectros de respuesta. El objetivo de este trabajo es mostrar que, de acuerdo con la historia sísmica y los daños producidos por eventos sísmicos pasados, la ciudad de Morelia es un sitio propenso a sismos destructivos, lo que vuelve fundamental contar con una red de mon...
Chemical Engineering is a complex discipline that is mainly applied to the industrial context, wh... more Chemical Engineering is a complex discipline that is mainly applied to the industrial context, which makes it difficult to approach real equipment and systems in the classroom to students. Nevertheless, Information and Communication Technologies (ICTs) are particularly useful to encourage active and autonomous learning, normally associated with deeper levels of engagement and understanding of the subjects taught. In this way, several studies have demonstrated that immersion has the potential to increase learning experiences and improve creativity and engagement, Virtual Reality (VR) being a remarkable example. In this context, we created and shared with students two immersive resources based on VR: (a) a laboratory 360° video tour, which was used to disseminate the Chemical Engineering Degree in an Open Door Days organized for high school students; and (b) an experiential learning tool integrated with Moodle, which was available previously to face-to-face practical lessons of the su...
The El Salvador Fault Zone (ESFZ) is part of the Central American Volcanic Arc and accommodates t... more The El Salvador Fault Zone (ESFZ) is part of the Central American Volcanic Arc and accommodates the oblique separation movement between the forearc sliver and the Chortis block (Caribbean Plate). In this work, a triclinic transtension model was applied to geological (fault-slip inversion, shape of volcanic calderas), seismic (focal mechanisms) and geodetic (GPS displacements) data to evaluate the characteristics of the last stages of the kinematic evolution of the arc. The El Salvador Fault Zone constitutes a large band of transtensional deformation whose direction varies between N90° E and N110° E. Its dip is about 70° S because it comes from the reactivation of a previous extensional stage. A protocol consisting of three successive steps was followed to compare the predictions of the model with the natural data. The results show a simple shear direction plunging between 20° and 50° W (triclinic flow) and a kinematic vorticity number that is mostly higher than 0.81 (simple-shearing...
Second-generation bioethanol is considered a suitable option for replacing fossil fuels. Agricult... more Second-generation bioethanol is considered a suitable option for replacing fossil fuels. Agricultural residues are being studied as feedstocks for sugar generation, which are in turn converted into ethanol. Among them, barley straw (BS) is a promising raw material, due to its high abundance, lignocellulosic composition and lack of other practical applications. Under these assumptions, the central aim of this study is to suggest an efficient bioethanol production scheme from BS at different levels of integration in co-fermentation with Escherichia coli SL100, including separate hydrolysis and co-fermentation (SHCF), simultaneous saccharification and co-fermentation (SSCF), and presaccharification and simultaneous saccharification and co-fermentation (PSSCF), using the water-insoluble solid (WIS) and slurry fractions obtained after steam explosion (SE) pretreatment. The best results in terms of ethanol yield were achieved following the SHCF process, using the WIS and the slurry as sub...
Como aporte para la solución del problema de los desechos de aceite de automóvil que se genera en... more Como aporte para la solución del problema de los desechos de aceite de automóvil que se genera en el país, se<br> aplicó un método de transformación de los aceites lubricantes de motor usados. La destilación del aceite usado<br> produjo un combustible de características muy similares al Diesel comercial y como subproducto un fluido con<br> características físicas de lodo asfaltico. El residuo de la destilación se sometió a un proceso de calcinación a 550<br> ºC, obteniéndose un material carbonáceo, el cual se caracterizó por las técnicas de análisis elemental CHNS-O,<br> microscopia electrónica de barrido, análisis EDX, DRX, FT-IR y área superficial BET. Los resultados obtenidos<br> demuestran que se obtuvo un material con alto contenido de carbono y con algunos elementos metálicos<br> incluidos en su composición. Se realizaron pruebas comparativas contra un carbón activado comercial de origen<br> vegetal, para observar la capacidad de...
Spanish abstract: En este trabajo se analiza el impacto que la industria automotriz de Aguascalie... more Spanish abstract: En este trabajo se analiza el impacto que la industria automotriz de Aguascalientes tiene sobre la generacion del empleo en la entidad, dado que considera las actividades economicas de exportacion mas relevantes en el sector de las manufacturas. Resulta interesante hacer este analisis en un contexto en el cual el comercio internacional en las ultimas decadas se ha articulado a traves de las llamadas Cadenas Globales de Valor (CGV) concepto que refiere a la division internacional de tareas que responde a la fragmentacion geografica de los procesos productivos para reducir costos aprovechando las politicas de apertura comercial y que para el caso del sector se ubica en el eslabon de ensamblado de bienes finales con bajo valor agregado en la region de America del Norte. Con esta finalidad se calculo el multiplicador del empleo que tiene el sector automotriz de exportacion respecto del resto de la economia local no exportadora, para lo cual se utilizo el Metodo de la B...
O artigo focaliza a espiritualidade como uma das dimensoes promotoras do bem-estar no ambiente de... more O artigo focaliza a espiritualidade como uma das dimensoes promotoras do bem-estar no ambiente de trabalho e mostra o valor da espiritualidade nas organizacoes. Enfatizando a contribuicao da vivencia da espiritualidade pessoal e grupal no ambiente de trabalho para minimizar as relacoes competitivas e conflitivas entre as pessoas, este trabalho destaca que as organizacoes que oportunizam espacos e tempos para fortalecer a dimensao espiritual dos colaboradores no ambiente de trabalho e os resultados do produto dessas organizacoes sao melhores. O artigo descreve a gestao da espiritualidade nas organizacoes como uma estrategia criativa que, a longo prazo, traz resultados surpreendentes para as organizacoes, dai a razao do crescente numero de pesquisas academicas realizadas contemplando a tematica da espiritualidade. Palavras-chave: Bem-estar. Espiritualidade. Ambiente de trabalho. Well-being within the work environment: spirituality as a differential Abstract In this article spiritualit...
This paper argues that the governance mechanism is essential for promoting end product quality. H... more This paper argues that the governance mechanism is essential for promoting end product quality. Hierarchy facilitates conformance quality but decreases efficiency in terms of incentives. One incentive-enhancing solution might be to move from a hierarchy towards more market-oriented organizational forms. This would solve the problem because, as residual claimants appear along the value chain, they automatically balance both quantity and quality to maximize their residual income. However, such hybrid solutions hinder conformance quality because they do not achieve such efficient coordination as hierarchy. The governance mechanism must therefore be complemented by a set of safeguards designed to improve coordination amongst the parties. Resulting mechanism of governance is more complex but it is also more useful for promoting high quality. We find empirical evidence in a set of international cases of quality brand names. First, we observe that more market-oriented governance mechanisms...
XLII JORNADAS DE AUTOMÁTICA : LIBRO DE ACTAS, 2021
La monitorización continua tanto de plagas que afectan a los cultivos hortofrutícolas en agricult... more La monitorización continua tanto de plagas que afectan a los cultivos hortofrutícolas en agricultura intensiva de invernadero, como de la lucha biológica, utilizada en este tipo de cultivos para combatir las plagas de una forma sostenible con el medio ambiente son esenciales en este sector. Actualmente, en la mayoría de los casos este control se realiza de forma manual (no siempre sin dificultad), lo que requiere a los agricultores de una supervisión continua para poder detectar, en el menor tiempo posible, cualquier brote que afecte a sus cultivos. En este trabajo se presenta una revisión de tecnologías habilitadoras para permitir una monitorización continua, sostenible y de forma autónoma en este sector estratégico en España. Estas tecnologías se integran en una propuesta de sistema de ayuda a la decisión para el control de plagas y control biológico.
Demand & Capacity Management solutions are key SESAR (Single European Sky ATM Research) research ... more Demand & Capacity Management solutions are key SESAR (Single European Sky ATM Research) research projects to adapt future airspace to the expected high air traffic growth in a Trajectory Based Operations (TBO) environment. These solutions rely on processes, methods and metrics regarding the complexity assessment of traffic flows. However, current complexity methodologies and metrics do not properly take into account the impact of trajectories’ uncertainty to the quality of complexity predictions of air traffic demand. This paper proposes the development of several Bayesian network (BN) models to identify the impacts of TBO uncertainties to the quality of the predictions of complexity of air traffic demand for two particular Demand Capacity Balance (DCB) solutions developed by SESAR 2020, i.e., Dynamic Airspace Configuration (DAC) and Flight Centric Air Traffic Control (FCA). In total, seven BN models are elicited covering each concept at different time horizons. The models allow eva...
International Journal of Aerospace Engineering, 2019
Performing Continuous Climb Operation (CCO) procedures enable the reduction of the environmental ... more Performing Continuous Climb Operation (CCO) procedures enable the reduction of the environmental footprint and the improvement of the trajectory efficiency when individually operated. However, its operation may affect negatively the overall operational efficiency at Terminal Manoeuvring Areas (TMAs). The estimation of capacity is a matter of paramount importance to all airport planning and analyzing the capacity effects of this particular operational technique on a certain scenario will definitely help on evaluating its potential applicability. In this paper, departure runway capacity at the Adolfo Suárez Madrid-Barajas airport was operationally evaluated when introducing CCOs. The considered trajectories consisted of multiobjective optimized CCOs based on the optimal control theory, using the pseudospectral direct numerical method. These scenarios allowed addressing of the incremental variations of CCOs versus conventional departures, through fast time simulation, with the objectiv...
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