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San Pedro, Costa Rica

Campo-Arias A.,Institute Investigacion del Comportamiento Humano | Miranda-Tapia G.A.,University of Cartagena | Cogollo Z.,University of Cartagena | Herazo E.,Magister University
Salud Uninorte | Year: 2015

Objective: To know the reproducibility of results of the WHO-5 WBI among nine-grade adolescent students in Cartagena (Colombia). Method:A total of 157 students participated in the research with mean age of 15.1 (SD= 1.1), 56.1% were boys. WHO-5 WBI consists of five items that quantify depressed mood, decreased interest in activities and energy lost during the last two weeks. It was calculated Cronbach alpha and omega McDonald coefficients as indicators of internal consistency; and Pearson correlation coefficient (r) and intraclass correlation coefficient (ICC) as estimators of the stability. Results:WHO-5 WBI showed acceptable internal consistency in the first and second application, Cronbach’s alpha of 0.668 and 0.697, respectively, and omega of McDonald and 0.686 0.671, respectively. Similarly, WHO-5 WBI showed high stability over four weeks with Pearson coefficient (r = 0.612, P <0.001) and ICC 0.613 (95% CI0.505-0.702).Conclusions:TheWHO-5 WBI presents acceptable reproducibility over four-weeks among adolescent students. It is needed to know the psychometric performance of the WHO-5 WBI using the best gold standard. © 2015, Universidad del Norte. All rights reserved. Source


Tunardi Y.,University for Information Science and Technology | Suharjito,Magister University
International Review on Computers and Software | Year: 2016

Agriculture sector has an important role in Indonesia. However,there are still many problems to deal with, such as pests and diseases, especially for paddy which is an important crop because it is the main food for people in Indonesia. Many things have been done by the government to solve that problem, but it has not been resolved because of the lack of knowledge of Indonesian farmers. This research proposes a new way to solve that problem by applying optimized Fuzzy Logic (Fuzzy K-Means and Fuzzy C-Means) with Bee Colony to get pest and disease classifications for paddy based on existing symptoms. Bee Colony will be used to determine the initial centroid for Fuzzy Logic. The proposed approach is evaluated based on the accuracy by comparing the value of Mean Square Error (MSE) and the accuracy of every method for pest and disease classifications. MSE of the new model is smaller than regular Fuzzy Logic by 0.016 for FCM and 1.213 for FKM. The accuracy of the new model is greater than regular Fuzzy Logic by 13.87% for FCM and 18.39% for FKM. It can be concluded that Bee Colony can be used to optimize Fuzzy Logic for pest and disease classifications for paddy with better classification results. © 2016 Praise Worthy Prte S.r.l. - All rights reserved. Source


Vilches D.,Magister University | Alburquerque G.,Bernardo OHiggins University | Ramirez-Tagle R.,Bernardo OHiggins University
Educacion Quimica | Year: 2016

While chemical weapons have been used since the beginning of armed struggles, either for their flammable or toxic properties, it was only during World War I when what is known as "modern" chemical warfare began. July 28 marks the one hundred and one anniversary of the beginning of what is also known as "The Great War". This conflict created enormous consequences for society at the time, marking a before and after in the history of mankind, as well as being the genesis of modern chemical warfare. © 2016 Universidad Nacional Autónoma de México, Facultad de Química. Source


This paper discusses the no-place concept under the simultaneous emergence of global cities and the wearing down of industrial districts. A typology of no place is proposed focused on the change of the urban tructure and its integration disruption processes. Thinking about developing instruments of a new urbanism (post-globalization), the proposal is to prioritize and intervene no-places resulting from the dying industrial city, of global mobility networks thought only in global functional and corporate terms, and of mercantilization with the fragmentation of the historical hubs. Source


Augmented reality allows students to visualize tridimensional shapes by turning and handing them in the palm of their hand. Taking objects "away" from the computer improves the students' perception of the three projection planes. A pedagogical application was designed with this new representation tool. Tridimensional models were made using the Google Sketchup open license software to view these 3D models using augmented reality. Handling the 3D models by students improves the clarity of tridimensional perception. The project also allowed for the assessment of pedagogical aspects, including the ways through which students improve their learning experience and how teachers can use these tools to build a more interactive setting where students can play an active role in the construction of their own learning environment. © 2016 Instituto de Arquitectura y Urbanismo, Facultad de Ciencias de la Ingeniería, Universidad Austral de Chile. Source

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