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  Subjects -> EDUCATION (Total: 2042 journals)
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    - EDUCATION (1732 journals)
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HIGHER EDUCATION (131 journals)                     

Showing 1 - 132 of 132 Journals sorted alphabetically
+E Revista de Extensión Universitaria     Open Access   (Followers: 2)
AASHE Insights     Full-text available via subscription   (Followers: 4)
Academic Leadership Journal     Open Access   (Followers: 41)
Academic Leadership Journal in Student Research     Open Access   (Followers: 1)
AISHE-J: The All Ireland Journal of Teaching and Learning in Higher Education     Open Access   (Followers: 15)
American Journal of Engineering Education     Open Access   (Followers: 12)
American Journal of Pharmaceutical Education     Open Access   (Followers: 7)
Arab Journal For Quality Assurance in Higher Education     Open Access   (Followers: 1)
Arquivos do Museu Dinâmico Interdisciplinar     Open Access  
ASEE Prism     Full-text available via subscription   (Followers: 3)
Asian Association of Open Universities Journal     Open Access   (Followers: 1)
AUDEM : The International Journal of Higher Education and Democracy     Full-text available via subscription   (Followers: 11)
Aula Universitaria     Open Access  
Bangladesh Journal of Medical Education     Open Access   (Followers: 2)
Campus Virtuales     Open Access   (Followers: 3)
Canadian Medical Education Journal     Open Access   (Followers: 8)
Chronicle of Higher Education     Full-text available via subscription   (Followers: 25)
College Student Journal     Full-text available via subscription   (Followers: 9)
Critical Studies in Teaching and Learning (CriSTaL)     Open Access   (Followers: 11)
Debate Universitario     Open Access  
Educate~     Open Access   (Followers: 3)
Educational Research in Medical Sciences Journal     Open Access   (Followers: 4)
EDUMECENTRO     Open Access  
ENGEVISTA     Open Access   (Followers: 1)
Enhancing Learning in the Social Sciences     Open Access   (Followers: 9)
Ethics in Science and Environmental Politics     Hybrid Journal   (Followers: 4)
European Journal of Higher Education     Hybrid Journal   (Followers: 50)
Excellence in Higher Education     Open Access   (Followers: 37)
Extensión en red     Open Access  
Formación Universitaria     Open Access   (Followers: 4)
Higher Education for the Future     Full-text available via subscription   (Followers: 4)
Higher Education of Social Science     Open Access   (Followers: 1)
Higher Education Pedagogies     Open Access   (Followers: 9)
Higher Education Studies     Open Access   (Followers: 52)
Higher Education, Skills and Work-based Learning     Hybrid Journal   (Followers: 47)
Higher Learning Research Communications     Open Access   (Followers: 7)
Högre utbildning     Open Access   (Followers: 1)
Ingeniería Mecánica     Open Access   (Followers: 4)
Innovation in Teaching and Learning in Information and Computer Sciences     Open Access   (Followers: 5)
Integración y Conocimiento     Open Access  
International Higher Education     Open Access   (Followers: 24)
International Journal for Educational Integrity     Open Access   (Followers: 2)
International Journal of Doctoral Studies     Open Access   (Followers: 1)
International Journal of Educational Technology in Higher Education     Open Access   (Followers: 11)
International Journal of Engineering Pedagogy     Open Access  
International Journal of Higher Education     Open Access   (Followers: 49)
International Journal of Higher Education and Sustainability     Hybrid Journal   (Followers: 5)
International Journal of STEM Education     Open Access   (Followers: 5)
International Journal of the First Year in Higher Education     Open Access   (Followers: 2)
Interpreter and Translator Trainer     Hybrid Journal   (Followers: 4)
ISAA Review     Full-text available via subscription   (Followers: 1)
Issues in Accounting Education     Hybrid Journal   (Followers: 16)
Issues in Accounting Education Teaching Notes     Hybrid Journal   (Followers: 11)
J3eA     Open Access   (Followers: 2)
Jesuit Higher Education : A Journal     Open Access   (Followers: 1)
Journal for Education in the Built Environment     Open Access   (Followers: 3)
Journal of Advanced Academics     Hybrid Journal   (Followers: 10)
Journal of Applied Research in Higher Education     Hybrid Journal   (Followers: 49)
Journal of Biomedical Education     Open Access   (Followers: 3)
Journal of Collective Bargaining in the Academy     Open Access   (Followers: 1)
Journal of College Counseling     Partially Free   (Followers: 2)
Journal of College Teaching & Learning     Open Access   (Followers: 15)
Journal of Community Engagement and Higher Education     Open Access   (Followers: 12)
Journal of Learning Design     Open Access   (Followers: 12)
Journal of Learning Development in Higher Education     Open Access   (Followers: 26)
Journal of Nursing Education and Practice     Open Access   (Followers: 20)
Journal of Online Higher Education     Open Access   (Followers: 1)
Journal of Perspectives in Applied Academic Practice     Open Access   (Followers: 2)
Journal of Problem Based Learning in Higher Education     Open Access   (Followers: 11)
Journal of Science and Research     Open Access  
Journal of Service-Learning in Higher Education     Open Access   (Followers: 2)
Journal of Student Affairs in Africa     Open Access   (Followers: 1)
Journal of Student Engagement : Education Matters     Open Access   (Followers: 12)
Journal of Student Financial Aid     Open Access  
Journal of Student Research     Open Access  
Journal of Teacher Education for Sustainability     Open Access   (Followers: 17)
Journal of Teaching and Learning for Graduate Employability     Open Access   (Followers: 1)
Journal of Technology and Science Education     Open Access   (Followers: 12)
Journal of the European Honors Council     Open Access  
Journal of University Teaching & Learning Practice     Open Access   (Followers: 35)
Journal of Veterinary Medical Education     Partially Free   (Followers: 12)
JURA - Juristische Ausbildung     Hybrid Journal   (Followers: 6)
Kentucky Journal of Excellence in College Teaching and Learning     Open Access   (Followers: 6)
Kentucky Journal of Higher Education Policy and Practice     Open Access   (Followers: 3)
Land Forces Academy Review     Open Access  
Language Learning in Higher Education     Hybrid Journal   (Followers: 18)
Maine Policy Review     Open Access   (Followers: 2)
Makerere Journal of Higher Education     Full-text available via subscription   (Followers: 2)
Marketing Education Review     Full-text available via subscription   (Followers: 7)
Marketing of Scientific and Research Organizations     Open Access  
Medical Teacher     Hybrid Journal   (Followers: 41)
National Teaching & Learning Forum The     Hybrid Journal  
Nauka i Szkolnictwo Wyższe     Open Access  
New Directions for Student Leadership     Hybrid Journal   (Followers: 3)
New Directions in the Teaching of Physical Sciences     Open Access   (Followers: 1)
Nordic Journal of Information Literacy in Higher Education     Open Access   (Followers: 25)
Nursing Education Perspectives     Hybrid Journal   (Followers: 12)
Online Journal for Global Engineering Education     Open Access  
ORBIT Journal     Open Access  
Pedagogia Social. Revista Interuniversitaria     Open Access   (Followers: 1)
Pédagogie Médicale     Full-text available via subscription   (Followers: 1)
Perspectiva Educacional     Open Access   (Followers: 3)
Planet     Open Access   (Followers: 4)
PRISM : A Journal of Regional Engagement     Open Access   (Followers: 1)
Recherche & formation     Open Access   (Followers: 1)
Recruiting & Retaining Adult Learners     Hybrid Journal   (Followers: 1)
Research Ethics     Open Access   (Followers: 7)
Revista Brasileira de Extensão Universitária     Open Access  
Revista Científica Ciencia y tecnología     Open Access  
Revista d'Innovació Docent Universitària     Open Access  
Revista de Ensino em Artes, Moda e Design     Open Access  
Revista Digital de Investigación en Docencia Universitaria     Open Access   (Followers: 1)
Revista Electronica Interuniversitaria de Formacion del Profesorado     Open Access  
Revista Gestão Universitária na América Latina - GUAL     Open Access  
Revista Interuniversitaria de Formacion de Profesorado     Open Access  
RT. A Journal on Research Policy and Evaluation     Open Access   (Followers: 1)
RU&SC. Revista de Universidad y Sociedad del Conocimiento     Open Access   (Followers: 2)
Strategic Enrollment Management Quarterly     Full-text available via subscription   (Followers: 3)
Student Engagement in Higher Education Journal     Open Access   (Followers: 3)
Student Success : A journal exploring the experiences of students in tertiary education     Open Access   (Followers: 9)
Studium : Tijdschrift voor Wetenschaps- en Universiteits-geschiedenis / Revue d'Histoire des Sciences et des Universités     Open Access   (Followers: 1)
Tartu Ülikooli ajaloo küsimusi     Open Access  
Teaching and Learning Inquiry : The ISSOTL Journal     Full-text available via subscription   (Followers: 13)
The Qualitative Report     Open Access   (Followers: 1)
Transformation in Higher Education     Open Access   (Followers: 1)
Trayectorias Universitarias     Open Access  
Triple Helix     Open Access   (Followers: 1)
Universidad en Diálogo : Revista de Extensión     Open Access  
Universidades     Open Access   (Followers: 1)
Widening Participation and Lifelong Learning     Hybrid Journal   (Followers: 13)
Women in Higher Education     Hybrid Journal   (Followers: 5)
Zeitschrift für Politikberatung     Hybrid Journal   (Followers: 1)


Journal Cover
Ingeniería Mecánica
Number of Followers: 4  

  This is an Open Access Journal Open Access journal
ISSN (Print) 1815-5944
Published by SciELO Homepage  [726 journals]
  • Thermal-hydraulic performance of a slit fin and influence of the fin pitch

    • Abstract: The airside performance of compact heat exchanger with slit fins having one row of tubes is investigated in this study using computational fluid dynamics. A numerical approach was implemented and it was certified using correlations of published literature. The objective was to obtain the thermal-hydraulic behavior for different fin pitches while ranging the Reynolds number from 400 to 1800. The influence on heat transfer coefficient, fin efficiency and heat flux was found. It is observed to be a function of the fin pitch, which is at its best when the offset strips of one fin have the same distance to the ones of the opposite arranged strips as to that fin plate. Was found, for each fin pitch,a peak in the fin efficiency as a function of the inlet velocity.Resumen El trabajo constituyó una aproximación numérica del desempeño térmico de intercambiadores de calor compactos con aletas slit y una sola fila de tubos. El modelo numérico se validó frente a correlaciones experimentales publicadas en la literatura. El objetivo fue estudiar el comportamiento termo-hidráulico como una función del espaciamiento entre aletas en un rango de números de Reynolds variable entre 400 y 1800. Se determinó la influencia del paso entre aletas sobre el coeficiente de transferencia de calor, la eficiencia de la aleta y el flujo de calor. Se observó que el paso entre aletas ejerce influencia sobre estas magnitudes encontrándose que el mejor valor era aquel que permitía que la parte horizontal de las slit quedase en el centro del canal entre aletas y a igual distancia de cada aleta. Además, se encontró que la eficiencia de la aleta posee un pico para cada paso entre aletas que depende de la velocidad de entrada.
  • Effect of arc and pulse corrections on the geometry of 5083 aluminum
           joints welded with cold metal transfer

    • Abstract: Resumen Las correcciones de arco y de pulso del proceso de soldadura con transferencia metálica fría modifican el voltaje y la corriente. El efecto de su combinación no se ha estudiado suficientemente sobre la geometría de la unión. El objetivo del presente trabajo es determinar el efecto de las correcciones de arco y de pulso y de la velocidad de soldadura del proceso con transferencia metálica fría sobre las geometrías de las uniones realizadas en aluminio 5083.Para ello, se realiza un diseño experimental, con tres factores independientes a dos niveles, empleando los parámetros geométricos de las uniones como factores independientes. La función corrección del puso influye directamente sobre la altura y la profundidad, mientras que la función corrección de la longitud de arco influye inversamente. Ambas funciones no manifiestan influencia significativa sobre el ancho del cordón. La velocidad de soldadura influye inversamente sobre la altura, el ancho y la profundidad de los cordones de soldadura. The arc and pulse corrections of the cold metal transfer welding process modify the voltage and current. The effect of their combination has not been sufficiently studied on the joint geometry. The objective of the present work is to determinate the effect of the arc and pulse corrections and the welding speed of the cold metal transfer welding process on the 5083 aluminum joints geometries. For this, an experimental design is made, with three independent factors at two levels, using the geometric parameters of the unions as independent factors. The correction pulse function directly acts on the height and depth, while than the arc length correction function has inversely influence. Both functions do not manifest significant influence on the welding width. The welding speed inversely acts on the height, the width and the depth of the welding joint.
  • Bibliographic analysis of operational reliability in complex technical

    • Abstract: Resumen En este trabajo se tuvo como objetivo demostrar la no existencia de un modelo matemático que involucre los 4 elementos integrantes la confiabilidad operacional. Se utilizaron los métodos de análisis tabular por campos de la referencia consistente en la agrupación, mediante una tabla Excel, de las referencias usadas para su análisis y a partir del uso del Minitab, realizar un análisis de agrupamiento o clúster a partir de un dendograma. Entre los resultados se obtuvo quelos elementos más presentes son los análisis de confiabilidad de equipos, los de mantenibilidad y los de disponibilidad, así como, los menos tratados son la logística y la calidad. En esta investigación se demostró la no existencia de un modelo matemático que involucre a los diferentes elementos integrantes de la confiabilidad operacional para el apoyo a la toma de decisiones. To demonstrate the non-existence of a mathematical model that involves the 4 elements of operational reliability was the subject of this work. The methods of tabular analysis by reference fields were used, consisting of the grouping, by means of an Excel sheet, of the references used for their analysis and from the use of the Minitab, to perform a cluster analysis from a dendrogram. As results it was obtained that the elements most present are the reliability analysis of equipment, the maintainability and availability, as well as the least treated are logistics and quality. This research demonstrated the non-existence of a mathematical model that involves the different elements of operational reliability for decision support.
  • Diagnosis of IC Engines using vibrations

    • Abstract: Mechanical vibrations are a tool for the technical diagnosis of machines since a long time, mainly in rotating machines. For alternative machines situation is quite different, due to a dissimilar dynamic. In this paper, the problem of diagnostic frequencies determination is focused on certain natural frequencies of engine block, instead than frequencies based on crankshaft rotational speed. Frequencies are obtained through modal analysis of the engine block using a Finite Element Model. Later, vibration measurements made on a running engine and peak frequencies in spectra were compared peaks frequencies in FRF (Frequency Response Function). The results show a good agreement between theoretical and experimental measurements.Resumen El diagnóstico técnico de las máquinas es una tarea de primer orden dentro de la Ingeniería Mecánica, y dentro de este, el empleo de técnicas que posibiliten la menor intervención en la estructura y la mayor información representan un aspecto de sumo interés. La medición de vibraciones es una herramienta muy útil. Sin embargo su aplicación es amplia en la maquinaria rotatoria y no en la alternativa. En el artículo se da una forma de enfocar el diagnóstico vibroacústico en las maquinas alternativas, en particular en los motores de combustión interna, a partir del empleo de las frecuencias naturales de oscilación del bloque como frecuencias de diagnóstico. Se explica la forma de determinación de las mismas por el método de los elementos finitos.
  • Evaluation of cylindrical specimens subjected bytorsional symmetrical load

    • Abstract: Resumen La fatiga de los materiales ingenieriles ha sido durante muchos años un tema de interés para ingenieros e investigadores. En este trabajo se describieron las características de una máquina torsional para ensayos a fatiga de probetas solicitadas a torsión cíclica simétrica. Se mostraron además los resultados de probetas con y sin prefisura ensayadas en la máquina. Se explicó el funcionamiento de la misma. La aplicación del momento torsor cíclico simétrico se logró mediante un mecanismo de tres barras que es el encargado de convertir el movimiento de rotación que entrega el motor eléctrico en un desplazamiento angular alternativo en el cabezal móvil. Las probetas ensayadas presentaron el comportamiento típico de la rotura por fatiga. Se demostró que la máquina construida permite realizar los ensayos a torsión cíclica simétrica. The fatigue of engineering materials has been for many years a topic of interest for engineers and researchers. In this work the characteristics of a torsional machine testing for fatigue tests of specimens under symmetric cyclic torsion are showed. The results of the specimens with and without pre-notch tested on the machine are also shown.The machine principle of operation was exposed. The application of the symmetrical cyclic torque was achieved by a three-bar mechanism that convert the motor rotation movement in an alternative angular displacement in the mobile headstock. The tested specimens presented the typical behavior of the fatigue failure.It was shown that the machine allows to perform the symmetric cyclic torsion tests.
  • A new approach for strategic maintenance management based on
           soft-computing generics algorithms

    • Abstract: The objective of this research was to provide soft-computing generics algorithms to manage the primary actions of the maintenance function, through the integration of tangible and intangible assets of a company. The design methodology used is based on the RUP (Rational Unified Process). The implementation was made with the C++ Builder compiler and was used PostgreSQL as database manager. Among the main results obtained are an increased the quality of the process since 100 % of the data collected in the work orders is tabulated in the database, reducing considerably the time of searching information related to work orders issued. It also was achieved a reduction of 13,994.03 hours per year, which translates as an increase in the equipment availability indicator.Resumen El objetivo de esta investigación fue proporcionar unos algoritmos genéricos informatizados para gestionar las acciones primarias de la función mantenimiento, a través de la integración de los activos tangibles e intangibles de una empresa. La metodología de diseño utilizada se basó en la RUP (Proceso Unificado Racional). La implementación se realizó con el compilador C ++ Builder y se utilizó PostgreSQL como gestor de bases de datos. Para evaluar la efectividad de los algoritmos se analizó un intervalo de tres años antes y tres años después de su implementación. Entre los principales resultados obtenidos se encuentra un incremento de la calidad del proceso, pues el 100 % de la información de los datos recogidos en las órdenes de trabajo se encuentra en una base de datos; reduciendo considerablemente el tiempo de búsqueda de información relativa a las órdenes de trabajo emitidas. Adicionalmente se logró una reducción de 13954,03 horas anuales, destinadas a acciones preventivas o correctivas, lo que se traduce en un aumento en el indicador de disponibilidad de los activos.
  • An algorithm to determine cavitation in a journal bearing with axial
           groove and parallel misalignment

    • Abstract: Resumen El objetivo del trabajo fue proporcionar un algoritmo computacional para predecirla ocurrencia de la cavitaciónen el lubricante de un par eje-cojinete,sometido a un desplazamiento radial conocido.El dispositivo se compone de un cilindro exterior que rodea un eje, ambos separados por un lubricante que evita el contacto. Se considera una ranura de alimentación axial y una desalineación paralela. Las incógnitas del problema son el campo de presión del lubricante, que satisface el modelo de cavitación de Reynolds, y la fuerza ejercida por este. El problema se resuelve computacionalmente mediante un método de gradiente conjugado precondicionado, modificado con técnicas de proyección y reinicialización para afrontar la cavitación. La estrategia numérica adoptada explota las propiedades del modelo matemático subyacente y aporta otra forma de solución al problema en cuestión, diferente de las que existen en la literatura. The objective of this paper is to provide a computational algorithm to predictcavitation within the lubricant of a journal bearing subjected to parallel misalignment. The device consists of an external cylinder surrounding a rotating shaft, both separated by a lubricant to prevent contact. An axial supply groove is considered as well as a parallel misalignment. The unknowns of the problem are the lubricant pressure field, satisfying the Reynolds cavitation model, and the force exerted by this. The problem is solved by the preconditioned conjugate gradient method, modified with both projection and restarting strategies to account for cavitation. The numerical approach takes advantage of the underlying mathematical model and provides another way of solution to the related problem, different from the ones that exist in the literature.
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Tel: +00 44 (0)131 4513762
Fax: +00 44 (0)131 4513327
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