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298 results for “Enhancement”
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Review ArticleOpen accessIn the keywordsHybrid Photovoltaic/Thermal (HPV/T) Systems: From Theory to ApplicationsErdem Cuce, Erman Kadir Oztekin, Pinar Mert CuceHybrid photovoltaic/ thermal systems are very promising clean energy harvesting devices where they can be used either standalone system or can be incorporated with other systems. In this study, historical developments leading to current Hybrid Photovoltaic/Thermal (HPV/T) systems as it is used today and global findings to enhance the performance of HPV/T system through state-of-the-art analyses are presented in a … …Energy Research Journal, Vol. 9, Issue 1 · 29 Jun 2018 · 7,877 accessesView PDFCite
Research ArticleOpen accessIn the keywordsA General Strategy to Enhance Upconversion luminescence in Rare-Earth-Ion-Doped Oxide NanocrystalsGuanying Chen, Lei XuWe report a general strategy to enhance upconversion luminescence from rare-earth-doped oxide nanocrystals through tailoring the local crystal filed around rare earth ions. We show that upconversion luminescence from oxide nanocrystals of various host lattice (Y2O3, Gd2O3 and ZnO) and of diverse rare-earth-ions (such as Er3+, Yb3+/Er3+, Yb3+/Ho3+ and Yb3+/Tm3+) was enhanced by orders of magnitude through an introduction of … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 1 · 18 Feb 2016 · 7,741 accessesView PDFCite
Research ArticleOpen accessIn the keywordsA GAUSSIAN MIXTURE MODEL FOR CLASSIFYING THE HUMAN AGE USING DWT AND SAMMON MAPJ. Nithyashri, G. KulanthaivelThe appearance of a human face rigorously changes with respect to age that makes Age Classification as a more challenging task. The algorithms such as, K-Nearest Neighbor (K-NN), Support Vector Machine (SVM), Radial Basis Function (RBF), motivated many Face Researchers to focus their attention in classifying the human age into various age groups. The Classification rate produced by these existing … …Journal of Computer Science, Vol. 10, Issue 11 · 20 Dec 2014 · 7,714 accessesView PDFCite
Research ArticleOpen accessIn the keywordsSCENARIOS PEDAGOGICAL-EDUCATIONAL MOVEMENT PLAYFrancesco PerrottaThe playtime and recreation plays an important role in child development. “Surplus energy” Spencer says That Both the man and the animal have the excess energy That are used in the activity fun. As we descended into the educational development Spencer Noted there was a decrease of fun Because The energy was used to meet basic needs. He Noted That … …Journal of Social Sciences, Vol. 9, Issue 4 · 29 Jan 2014 · 7,709 accessesView PDFCite
Research ArticleOpen accessIn the keywordsACCURATE AND FAST PUPIL LOCALIZATION USING CONTRAST STRETCHING, SEED FILLING AND CIRCULAR GEOMETRICAL CONSTRAINTSIman A. Saad, Loay E. George, Ahmad A. TayyarIris segmentation is the most contested issue in the iris recognition system, since noise and poor image quality can significantly affect accuracy of iris localization stage. Therefore, very careful attention has to be paid for the segmentation process if only an accurate result is expected. This study presents a new method for precise pupil detection capable of handling the unconstrained … …Journal of Computer Science, Vol. 10, Issue 2 · 16 Nov 2013 · 7,247 accessesView PDFCite
Research ArticleOpen accessIn the keywordsImplementation of Line Stability Index for Contingency Analysis and Screening in Power SystemsC. Subramani, Subhransu Sekhar Dash, Vivek Kumar, Harish KiranProblem statement: Estimating the margin in the loadability of the power system is essential in the real time voltage stability assessment. Voltage stability is currently one of the most important research areas in the field of electrical power system. In power system operation unpredictable events is termed as contingency and may be caused by line outage in the system which … …Journal of Computer Science, Vol. 8, Issue 4 · 11 Feb 2012 · 7,136 accessesView PDFCite
Research ArticleOpen accessIn the keywordsModeling of Fundamental Frequency Contour of Thai Expressive Speech using Fujisaki's Model and Structural ModelSuphattharachai ChomphanProblem statement: In spontaneous speech communication, prosody is an important factor that must be taken into account, since the prosody effects on not only the naturalness but also the intelligibility of speech. Focusing on synthesis of Thai expressive speech, a number of systems has been developed for years. However, the expressive speech with various speaking styles has not been accomplished. … …Journal of Computer Science, Vol. 7, Issue 8 · 9 Aug 2011 · 6,980 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEffects of Noises on the Analysis of Fundamental Frequency Contours for Thai SpeechSuphattharachai ChomphanProblem statement: In speech communication, noises from surrounding environments affect the communication quality with various aspects. The received speech quality should be analyzed to see how the important noises reduce the speech quality so that we can eliminate them in an appropriate way. Approach: This study presents a study on the analysis of the noise effects on Thai speech. Four … …Journal of Computer Science, Vol. 7, Issue 4 · 4 Apr 2011 · 6,833 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEvaluation of the Groundwater Global Pollution Risk: Relationships with Territorial PlanningM. De Maio, F. Minucci, G. NocerinoProblem statement: The protection and enhancing of Groundwater Resources (GWR) at an international level have been studied extensively, but they have very rarely been considered in Territorial Planning and Urban Planning. Now more than in the past, thanks to the technologies and know-how acquired over the years, ignoring responsibilities with regards to the close link between these themes is no … …American Journal of Environmental Sciences, Vol. 6, Issue 2 · 30 Apr 2010 · 6,846 accessesView PDFCite
Research ArticleOpen accessIn the keywordsGroundwater Resources Pollution Risk: Application of the Holman MethodM. De Maio, C. Favaron, G. NocerinoProblem statement: The aim of this study is to make an attempt to assess, through the application of the Holman Method, the effects that a careless management of human induced activities could have on aquifers and in particular on tapping wells used for human supply. Approach: The study had been applied to two different territories, as far as both the … …American Journal of Environmental Sciences, Vol. 5, Issue 6 · 31 Dec 2009 · 6,776 accessesView PDFCite