Scopus: Journal of East African Ornithology最新文献_第8页

Professionalization of election campaigns: Colombian presidential elections 2010 [La profesionalización de las campañas electorales: Las elecciones presidenciales de Colombia 2010] 本研究的目的是评估在2010年哥伦比亚总统选举中选举活动的专业化程度。

Scopus: Journal of East African Ornithology Pub Date : 2015-12-17 DOI: 10.1234/RECP.N38.2015.PP85-114

N. J. R. Echavarría

引用次数: 4

System Identification of a Two-Story Infilled RC Building in Different Damage States 两层填充混凝土建筑不同损伤状态下的系统识别

Scopus: Journal of East African Ornithology Pub Date : 2015-12-03 DOI: 10.1061/9780784479728.050

Seyedsina Yousefianmoghadam, Mingming Song, A. Stavridis, B. Moaveni

{"title":"System Identification of a Two-Story Infilled RC Building in Different Damage States","authors":"Seyedsina Yousefianmoghadam, Mingming Song, A. Stavridis, B. Moaveni","doi":"10.1061/9780784479728.050","DOIUrl":"https://doi.org/10.1061/9780784479728.050","url":null,"abstract":"This study focuses on vibration-based system identification of an actual structure located in El Centro, California. The structure had already been subjected to four earthquakes with epicenters in close proximity and was to be demolished due to the extended damage. Four damage levels were introduced to the structure by gradually removing four perimeter infill walls. A series of dynamic tests were conducted in each damage state using an eccentric mass shaker. The ambient vibration of the structure was also recorded through an array of 60 accelerometers mounted on the structure. The system identification discussed in this paper was conducted using the ambient vibration recordings. Moreover, a preliminary finite element model of the building was created to estimate numerically the dynamic characteristics of the structure. These were compared to the properties obtained from the system identification. The results indicate that the frequencies estimated by the model overestimate those obtained from the system identification results, while the experimentally and numerically obtained mode shapes are in good agreement.","PeriodicalId":38571,"journal":{"name":"Scopus: Journal of East African Ornithology","volume":"1 1","pages":"607-618"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1061/9780784479728.050","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58576825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Virtual Reality as good practice for teamwork with engineering students 虚拟现实是与工程专业学生进行团队合作的良好实践

Scopus: Journal of East African Ornithology Pub Date : 2015-12-01 DOI: 10.17013/RISTI.16.76-91

G. Gasca-Hurtado, Adriana Peña, María Clara Gómez-Álvarez, Óscar Armando Plascencia-Osuna, J. Calvo-Manzano

{"title":"Virtual Reality as good practice for teamwork with engineering students","authors":"G. Gasca-Hurtado, Adriana Peña, María Clara Gómez-Álvarez, Óscar Armando Plascencia-Osuna, J. Calvo-Manzano","doi":"10.17013/RISTI.16.76-91","DOIUrl":"https://doi.org/10.17013/RISTI.16.76-91","url":null,"abstract":"espanolLa realidad virtual es una alternativa de motivacion de los estudiantes al darles la posibilidad de realizar acciones como volar u observar el entorno desde diferentes perspectivas de manera controlada. La interaccion multiusuario en realidad virtual da lugar a los entornos virtuales colaborativos que favorecen el desarrollo de habilidades sociales como el trabajo en equipo, en particular en equipos con integrantes con ubicaciones geograficas diferentes. En estos contextos se encuentran diversas propuestas de aplicacion de la realidad virtual que transportan a los estudiantes a entornos donde deben tomar decisiones conjuntas para lograr los objetivos propuestos. Sin embargo, estas propuestas no hacen enfasis en la importancia de reconocer las fortalezas o habilidades de cada miembro del equipo para mejorar su desempeno. El presente articulo propone un videojuego, basado en realidad virtual, que incorpora los principios de gamificacion para promover y mejorar el trabajo en equipo en estudiantes de ingenieria. EnglishVirtual reality is an alternative for student’s motivation, allowing them actions like flying or observing the environment from different perspectives in a controlled way. Multiuser interaction in virtual reality leads to collaborative virtual environments that promote the development of social skills in teamwork, in particular with members in different geographic locations. In these contexts there are different virtual reality application proposals transporting students to environments where they make team decisions for achieving intended goals. However, such proposals do not emphasize the importance of identifying the strengths of each team member for the improvement in the team performance. This paper presents a virtual reality-based videogame incorporating gamification principles for promoting and improving teamwork in engineering students.","PeriodicalId":38571,"journal":{"name":"Scopus: Journal of East African Ornithology","volume":"1 1","pages":"76-91"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67540010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Field research in information and communication technologies: Governance strategy at Universidad de Medellín [Campo de investigación en tecnologías de información y comunicación: Estrategia de gobernanza en la Universidad de Medellín] 信息和通信技术领域研究:medellin大学的治理策略[信息和通信技术领域研究:medellin大学的治理策略]

Scopus: Journal of East African Ornithology Pub Date : 2015-10-09 DOI: 10.4067/S0718-33052015000200015

P. Gonzalez, Sandra Arango, Claudia Vásquez, J. Ospina

{"title":"Field research in information and communication technologies: Governance strategy at Universidad de Medellín [Campo de investigación en tecnologías de información y comunicación: Estrategia de gobernanza en la Universidad de Medellín]","authors":"P. Gonzalez, Sandra Arango, Claudia Vásquez, J. Ospina","doi":"10.4067/S0718-33052015000200015","DOIUrl":"https://doi.org/10.4067/S0718-33052015000200015","url":null,"abstract":"Como parte de su plan de desarrollo y del Proyecto Educativo Institucional, la Universidad de Medellin, Colombia, requiere orientar sus esfuerzos de investigacion en Tecnologias de Informacion y Comunicacion -TIC-. Actualmente no hay claridad sobre las fortalezas que deben ser potenciadas, lo cual dificulta la focalizacion de capacidades. Se hace necesario construir un nicho en el que la Institucion sea reconocida y claramente diferenciada con respecto a otras entidades de educacion superior. Se propone la estructuracion del campo en TIC como estrategia para la gobernanza desde el punto de vista de investigacion dentro de la Universidad. En este articulo se presenta un conjunto de tendencias de investigacion como directriz institucional para enfocar la capacidad instalada en cuanto a recurso humano calificado, infraestructura y procesos. Para tal efecto se esta usando una perspectiva cualitativa bajo enfoque metodologico hermeneutico. Hallazgos parciales revelan que se debe investigar en tematicas asociadas a educacion, infraestructura tecnologica, regulacion y politicas, medio ambiente, desarrollo de software, gestion y administracion de las organizaciones y contenidos digitales. Cada tematica se desagrega en un conjunto de sub-tematicas para mayor claridad. Con este mapeo de tendencias sera posible direccionar los esfuerzos de la Universidad de Medellin y obtener reconocimiento por los avances que se alcancen en cuanto a investigacion de vanguardia asociada a las TIC. Este direccionamiento esta acompanado de un plan de comunicaciones para un despliegue adecuado en toda la comunidad logrando apropiacion del tema en todos los niveles.","PeriodicalId":38571,"journal":{"name":"Scopus: Journal of East African Ornithology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70192277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Adherence to the nutritional treatment and body composition: A cross-sectional study in patients with obesity or overweight [La adherencia al tratamiento nutricional y composición corporal: Un estudio transversal en pacientes con obesidad o sobrepeso] 营养治疗的依从性和身体成分:肥胖或超重患者的横断面研究[营养治疗依从性和身体成分:肥胖或超重患者的横断面研究]

Scopus: Journal of East African Ornithology Pub Date : 2015-10-06 DOI: 10.1590/S0104-59702007000100005

G. L. Giraldo, R. Estrada, R. A. L. Muñoz, S. Mesa, G. Herrera, L. Zapata

引用次数: 1

Fullerenes, higher fullerenes, and their hybrids: Synthesis, characterization, and environmental considerations 富勒烯、高级富勒烯及其杂化物:合成、表征和环境考虑

Scopus: Journal of East African Ornithology Pub Date : 2015-10-03 DOI: 10.1002/9781118980989.CH1

Nirupam Aich, Jaime Plazas-Tuttle, Navid B. Saleh

{"title":"Fullerenes, higher fullerenes, and their hybrids: Synthesis, characterization, and environmental considerations","authors":"Nirupam Aich, Jaime Plazas-Tuttle, Navid B. Saleh","doi":"10.1002/9781118980989.CH1","DOIUrl":"https://doi.org/10.1002/9781118980989.CH1","url":null,"abstract":"The search for alternative and renewable energy sources has become one of the major thrusts of the twenty‐first‐century researchers due to the increasing demand for energy. Innovations and development of photovoltaics, dye‐sensitized or polymer solar cells, high‐efficiency lithium ion batteries, supercapacitors, trans parent conductors, hydrogen productions and storage systems, microbial fuel cells, catalyst‐driven proton exchange membrane fuel cells, thermoelectric power gener ation, etc., have come to the forefront in alternative energy research [80, 149]. In quest of effective energy transfer, distribution, and storage, improved materials are being synthesized since the 1990s. Nanoscale manipulation of materials has fueled such development [11]. Improved surface area at the nanoscale and targeted molec ular placement or alteration in nanomaterials resulted in desired band gap tuning and effective electron transfer, storage, and surface activity [111]. One of the key challenges that eluded energy researchers for decades was an efficient photoelec tron acceptor with high structural stability and chemical reactivity; a spheroidal","PeriodicalId":38571,"journal":{"name":"Scopus: Journal of East African Ornithology","volume":"219 ","pages":"1-45"},"PeriodicalIF":0.0,"publicationDate":"2015-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50738444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Nanocarbon‐Based Nonprecious‐Metal Electrocatalysts for Oxygen Reduction in Various Electrolytes 纳米碳基非贵金属电催化剂在各种电解质中的氧还原

Scopus: Journal of East African Ornithology Pub Date : 2015-09-25 DOI: 10.1002/9783527680016.CH4

Qing Li, Gang Wu

引用次数: 0

Tools for measuring a city's resilience in a fire following earthquake scenario 用于测量城市在地震后发生火灾时的恢复能力的工具

Scopus: Journal of East African Ornithology Pub Date : 2015-09-25 DOI: 10.2749/222137815818358088

N. Khorasani, T. Gernay, M. Garlock

引用次数: 8

On the Dynamics of a Belt-Tensioner with Dry-Friction and Nonlinear Spring 干摩擦非线性弹簧带式张紧器动力学研究

Scopus: Journal of East African Ornithology Pub Date : 2015-09-22 DOI: 10.4271/2015-36-0532

P. Grego, R. Pederiva

引用次数: 0

Energy Harvesting From Heartbeat Using Piezoelectric Beams With Fan-Folded Configuration and Added Tip Mass 利用扇形折叠结构和增加尖端质量的压电梁收集心跳能量

Scopus: Journal of East African Ornithology Pub Date : 2015-09-21 DOI: 10.1115/SMASIS2015-9071

M. Ansari, M. Karami

{"title":"Energy Harvesting From Heartbeat Using Piezoelectric Beams With Fan-Folded Configuration and Added Tip Mass","authors":"M. Ansari, M. Karami","doi":"10.1115/SMASIS2015-9071","DOIUrl":"https://doi.org/10.1115/SMASIS2015-9071","url":null,"abstract":"A fan-folded piezoelectric energy harvester is designed to generate electricity using heartbeat vibrations. This energy harvester consists of several bimorph beams stacked on top of each other making a fan-folded shape. Each beam has a brass substrate and two piezoelectric patches attached on both sides of it. These beams are connected to each other by rigid beams. One end of the device is clamped to the wall and the other end is free to vibrate. A tip mass is placed at the free end to enhance the output power of the device and reduce the natural frequency of the system.High natural frequency is one major concern about the microscaled energy harvesters. The size for this energy harvester is 1 cm by 1 cm by 1 cm, which makes the natural frequency very high. By utilizing the fan-folded geometry and adding tip mass and link mass to the configuration, this natural frequency is reduced to the desired range.The generated electricity can be used to power up a pacemaker. If enough electricity is generated, the pacemaker operates without having a battery and the patient does not need to have a surgery every seven to ten years to have the battery replaced. The power needed for a pacemaker to operate is about 1 microwatt. In this paper, the natural frequencies and mode shapes of fan-folded energy harvesters with added tip mass and link mass are analytically derived. The electro-mechanical coupling has been included in the model and the expression for the multi-mode power frequency response function is calculated.Copyright © 2015 by ASME","PeriodicalId":38571,"journal":{"name":"Scopus: Journal of East African Ornithology","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1115/SMASIS2015-9071","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63521196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8