Tópicos Sugeridos dentro de su búsqueda.
Tópicos Sugeridos dentro de su búsqueda.
Buscar alternativas:
phase transformation » mask transformation (Expander búsqueda), a transformation (Expander búsqueda), alpha transformation (Expander búsqueda)
phase transformation » mask transformation (Expander búsqueda), a transformation (Expander búsqueda), alpha transformation (Expander búsqueda)
1
artículo
The present investigation was carried out from birth as an Independent Republic Ecuador; and the analysis on the course of the Ecuadorian higher education, beginning with the promulgation of the First Consti-tution of September 23, 1830, until his last force since September 28, 2008, representing a total of twenty, which they have provided the basis for this study.With this, the information has been synthesized in six phases, they have not been determined with a speci-fic range of time, but based on the expectation that generated the constitutional framework that allowed to move from one state to another, identifying each of them, the time of analysis, the most outstanding actions that allow us to understand and historically relate the process of transformation of the Ecuadorian higher education that is living in the moment, where all institutions of the system are subject to improvement...
2
artículo
Publicado 2021
Enlace
Enlace
MAX phase thin films have been synthesized by thermal treatment of a Ti-Al-C multilayer system. The preparation of the multilayer system was carried out via magnetron sputtering. Based on the thickness ratio among the individual nanoscale monolayers (Ti, Al, C), the resulting MAX phase stoichiometry can be controlled. This paper describes the synthesis of both Ti2AlC and Ti3AlC2 MAX phases from the same precursor multilayer system which is composed of a sequence of Ti/Al/C pure elemental single layers with thicknesses of 14, 6, and 3.5 nm, respectively. This sequence is repeated 22 times with a total thickness of around 500 nm. Rapid thermal treatment tests were performed to study the phase development. The Ti2AlC MAX phase forms in a temperature range below 850 °C, whereas the Ti3AlC2 MAX phase starts to form at temperatures above 850 °C and reaches its highest phase purity at 950 °C...
3
artículo
Publicado 2023
Enlace
Enlace
This work proposes a computational algorithm which extracts the frequency, timings and signal segments corresponding to respiratory phases, through buccal and nasal acoustic signal processing. The proposal offers a computational solution for medical applications which require on-site or remote patient monitoring and evaluation of pulmonary pathologies, such as coronavirus disease 2019 (COVID-19). The state of the art presents a few respiratory evaluation proposals through buccal and nasal acoustic signals. Most proposals focus on respiratory signals acquired by a medical professional, using stethoscopes and electrodes located on the thorax. In this case the signal acquisition process is carried out through the use of a low cost and easy to use mask, which is equipped with strategically positioned and connected electret microphones, to maximize the proposed algorithm's performance. The al...
4
artículo
The present investigation was carried out from birth as an Independent Republic Ecuador; and the analysis on the course of the Ecuadorian higher education, beginning with the promulgation of the First Consti-tution of September 23, 1830, until his last force since September 28, 2008, representing a total of twenty, which they have provided the basis for this study.With this, the information has been synthesized in six phases, they have not been determined with a speci-fic range of time, but based on the expectation that generated the constitutional framework that allowed to move from one state to another, identifying each of them, the time of analysis, the most outstanding actions that allow us to understand and historically relate the process of transformation of the Ecuadorian higher education that is living in the moment, where all institutions of the system are subject to improvement...
5
artículo
En los últimos años, el advenimiento de la potencia computacional para propósitos de cálculo ha tenido un gran impacto en la optimización de los procesos industriales automáticos relacionados a visión computacional, \emph{machine learning}, robótica y máquinas autónomas. En este contexto, un análisis topográfico rápido de objetos 3D que abarcan de milimetros a decímetros juega un rol importante en los procesos industriales autónomos. Desde la óptica, la perfilometría de proyección de franjas ha sido una herramienta barata y versátil para este propósito. In este trabajo, realizamos una ingeniería reversa de ésas técnicas encontradas en la literatura en las últimas décadas. Construímos un sistema de adquisión y desarrollamos algunos códigos en Python para la reconstrucción de imágenes de objetos no encontrados en la literatura.
6
tesis de grado
Publicado 2020
Enlace
Enlace
El desarrollo de la presente investigación tiene como objetivo principal determinar cómo la propuesta de mejora en el proceso de armado de núcleo incrementará la productividad en la fabricación de transformadores de la empresa DELCROSA S.A. La investigación es de tipo aplicada con un diseño analítico prospectivo, teniendo como población a los 10 colaboradores operativos de la empresa, la técnica de recolección fue el análisis documental, para el procesamiento se empleó el diagrama de operaciones del proceso, diagrama de Ishikawa y la herramienta SMED. La propuesta de mejora estuvo basada en la herramienta SMED, donde se detalló las 4 fases: 1. Análisis situacional del proceso de armado de núcleo y descripción de las actividades. 2 clasificaciones de las actividades internas y externas. 3 conversiones de actividades de internas a externas y finalmente la fase 4 que es la ...
7
tesis de maestría
Publicado 2023
Enlace
Enlace
MAX phase thin films can be fabricated through firstly depositing a precursor thin film consisting of the initial elements M, A, and X close to the MAX phase stoichiometry employing physical vapor deposition techniques with a subsequent thermal annealing process. This work presents different deposition configurations (multilayer and co-sputtering) for the fabrication of the Ti2AlC and Ti3AlC2 MAX phase thin films by magnetron sputtering from three elemental targets (Ti, Al, and C). It was found that the depositions followed mainly amorphous thus the MAX phase was not able to form. By implementing the deposition parameters such as temperature and substrate voltage, the deposition morphology could be tailored to crystalline and MAX phases could be created. Moreover, Ti2AlC and Ti3AlC2 nanostructured MAX phase thin films were fabricated by magnetron sputtering with three elemental targets (...
8
tesis de maestría
Publicado 2023
Enlace
Enlace
MAX phase thin films can be fabricated through firstly depositing a precursor thin film consisting of the initial elements M, A, and X close to the MAX phase stoichiometry employing physical vapor deposition techniques with a subsequent thermal annealing process. This work presents different deposition configurations (multilayer and co-sputtering) for the fabrication of the Ti2AlC and Ti3AlC2 MAX phase thin films by magnetron sputtering from three elemental targets (Ti, Al, and C). It was found that the depositions followed mainly amorphous thus the MAX phase was not able to form. By implementing the deposition parameters such as temperature and substrate voltage, the deposition morphology could be tailored to crystalline and MAX phases could be created. Moreover, Ti2AlC and Ti3AlC2 nanostructured MAX phase thin films were fabricated by magnetron sputtering with three elemental targets (...
9
artículo
Publicado 2018
Enlace
Enlace
This work was funded by the Strategic Environmental Research and Development Program (ER-2426) and Cienciactiva, an initiative of CONCYTEC (grant contract number 276-2015-FONDECYT). We also wish to acknowledge Gnanasiri S. Premachandra and Chloe De Perre for their analytical chemistry support.
10
artículo
Publicado 2015
Enlace
Enlace
This research shows methodologies and dynamics to get aims in a region, which were applied in a neighborhood of the city of Córdoba, Argentina. This initiative is part of the Programa de Habitat de la fundacion holcim Argentina, with goal to “improve the lives of families in the areas of influence through the care of the environment and construction - materials and symbolic public spaces which promote a civic culture. The social cartography was used as a tool of participatory urban research where people recognize important places typing on a map of the territory, impressions and suggestions. Through an analysis of sentences written on map, the paper deals with the relations between the subject and the environment as well as systems detect places where people perform their everyday activities. The map identified the social occupation of space in the following areas: ownership on the en...
11
artículo
Publicado 2000
Enlace
Enlace
The treatment of metals and alloys is a complex technological process comprising the steps of heating, holding and cooling in the process the complete transformation of structural phases, followed by a velicidad adequate cooling is achieved, which are modified sis properties which depend on the nature, size and distribution of the structural constituents that are related to the yield strength, breaking strength, elongation and energy absorption.
12
artículo
Publicado 2000
Enlace
Enlace
The treatment of metals and alloys is a complex technological process comprising the steps of heating, holding and cooling in the process the complete transformation of structural phases, followed by a velicidad adequate cooling is achieved, which are modified sis properties which depend on the nature, size and distribution of the structural constituents that are related to the yield strength, breaking strength, elongation and energy absorption.
13
tesis doctoral
Publicado 2024
Enlace
Enlace
This dissertation investigates the potential improvement of volcanic eruption understanding and forecasting methods by using advanced data processing techniques to analyze large datasets at three target volcanoes (Piton de la Fournaise (PdlF) (France), Sabancaya, and Ubinas (Peru)). The central objective of this study is to search for possible empirical relationships between the pre-eruptive behavior of the accelerated increase in seismic activity using the Failure Forecast Method (FFM) and velocity variations measured by Coda Wave Interferometry (CWI), since both observations are reported to be independently associated with medium damage. The FFM is a deterministic method used to forecast volcanic eruptions using an empirical relationship of increased and accelerated evolution of an observable (e.g., volcano-seismic event rates). The event rates used with FFM in this study were generate...
14
tesis doctoral
Publicado 2024
Enlace
Enlace
This dissertation investigates the potential improvement of volcanic eruption understanding and forecasting methods by using advanced data processing techniques to analyze large datasets at three target volcanoes (Piton de la Fournaise (PdlF) (France), Sabancaya, and Ubinas (Peru)). The central objective of this study is to search for possible empirical relationships between the pre-eruptive behavior of the accelerated increase in seismic activity using the Failure Forecast Method (FFM) and velocity variations measured by Coda Wave Interferometry (CWI), since both observations are reported to be independently associated with medium damage. The FFM is a deterministic method used to forecast volcanic eruptions using an empirical relationship of increased and accelerated evolution of an observable (e.g., volcano-seismic event rates). The event rates used with FFM in this study were generate...
15
artículo
Publicado 2019
Enlace
Enlace
El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.
16
tesis de grado
Publicado 2025
Enlace
Enlace
La presente investigación desarrolla e implementa una solución RPA para automatizar la atención de solicitudes de transferencia gratuita gestionadas en UTicket por una empresa del sector de bebidas y consumo masivo. El proceso original, ejecutado de forma manual, generaba demoras debido a errores en el registro de información en SAP y una sobrecarga operativa que impedía cumplir los niveles de servicio establecidos. Tras analizar el flujo AS-IS e identificar las principales causas del problema, se desarrolló un robot en Power Automate Desktop capaz de validar documentos, registrar pedidos en SAP y actualizar el estado de los tickets sin intervención humana. La arquitectura diseñada incorpora manejo de credenciales, control de incidencias, comunicación automática y generación de reportes. Durante la fase de validación, la automatización evidenció una reducción del 60% en el...
17
tesis de maestría
Publicado 2018
Enlace
Enlace
La definición de liderazgo tiene una semántica múltiple, pero Gordó (2010), señala que puede estar delimitado en el marco de las relaciones interpersonales. Nuestra investigación justamente se orientó hacia el escudriñamiento de los sucesos de relación interpersonal, ligados a los procesos directivos de la institución escolar, para arribar al fortalecimiento de las buenas prácticas de la gestión escolar. Es que en la práctica, el liderazgo, según Stodgill (2001), citado por Morocho (2010), actualmente entraña una distribución desigual del poder entre los líderes y los miembros de las organizaciones escolares. Esto implica que si bien los miembros del grupo carecen del poder que tiene el líder, es el grupo el que la da forma a este poder del líder, a través de las diferentes actividades y de distintas maneras en el seno organizacional. Sin embargo, al igual que Stodgil...
18
tesis de maestría
Publicado 2024
Enlace
Enlace
Las empresas distribuidoras de productos de consumo masivo de la región Lambayeque presentan un bajo nivel de madurez digital y una alineación estratégica de las TI deficiente, en base a las evaluaciones realizadas a una muestra de 3 empresas del sector, se identificó un desconocimiento por parte de altos directivos en cuanto a digitalización de procesos y una falta de interés en la función de las TIsobre el cumplimiento de la estrategia empresarial. La presente investigación tiene como objetivo principal el diseño de un modelo basado en transformación digital y metodología PETI para apoyar la alineación estratégica de las TI en las empresas distribuidoras. Por ello se realizó una comparativa de modelos de transformación digital y marcos de trabajo PETI; los cuales al ser personalizados a las organizaciones del sector distribución, otorgan una secuencia de fases y activid...
19
artículo
Publicado 2021
Enlace
Enlace
Geophysical studies oriented to characterization play a very important role in providing a better understanding of the internal structure of the earth and specifically of a new study area and consequently being able to map its properties, its characteristics and the effects generated by the processes of geological alteration. This will finally generate a better geological - geophysical interpretation in the new study zone. In this research work the chargeability data registered in the time domain is being used, firstly the values registered through the 20 windows sampled in time are used and this decay curve obtained is the one used to determine the function transfer that expresses the behavior of the subsoil when applying a current and observing its chargeability. This transfer function is then used, and the Fourier transform is applied to decompose this new signal into its spectral val...
20
artículo
Publicado 2007
Enlace
Enlace
The purpose of this work is to implement an algorithm to identify the seismic waves parameters: P phase, S phase, amplitude, period and duration. For this, digital signal processing and the programming language Matlab will be applied to perform the automatic reading of seismic signal parameters. As mathematical tools, the discrete Fourier transform (fft) to study the frecuency components of the signal and the Hilbert transform to obtain the envelope signal, will be used. A graphical user interface in Matlab was designed and implemented for reading (with functions of automatic reading or manual reading) seismic signals with three components. In this way, it makes easy the routine of reading the seismic signals within a great set. The results of the automatic algorithm agree with that of a manual operator for a great Signal/Noise ratio.
