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Browsing Artículos de conferencia by browse.metadata.fuente "Scopus"
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- ItemControl of ciliary movement in mammalian oviductal ciliated cells(1991) Villalon M.; Verdugo P.
- ItemDevelopment and Operationalisation of Local Sustainability Indicators - A Global South Perspective on Data Challenges and Opportunities for GIScience(Schloss Dagstuhl- Leibniz-Zentrum fur Informatik GmbH, Dagstuhl Publishing, 2023) Steiniger, Stefan; Rojas Quezada, Carolina Alejandra; Truffello Robledo, Ricardo Enrique; Barton Jonathan, RichardEvaluating and monitoring the sustainable development of nations and cities requires sets of indicators. Such indicator sets should measure equity, health, environmental, or governmental progress or recess - among other sustainability aspects. In 2015 the United Nations ratified 17 Sustainable Development Goals (SDG) assessed through 231 indicators. However, other - local - sets of indicators have been developed too. In this paper we review geodata challenges that emerged when we developed four sustainability indicator sets in Chile. Faced challenges include (geo)data availability and data representativeness, among others. We analyse how GIScience knowledge has contributed to indicator development and outline three priority research topics: (i) updating indicators based on automated processes, while respecting representativeness, (ii) tools for planning scenario generation, and (iii) methods for short- and long-term forecasting.
- ItemMathematics learning opportunities for students with learning disabilities at special schools(Psychology of Mathematics Education (PME), 2019) Martin, Constanza San; Rojas, Francico; Martinez, Maria; Ramirez, Chenda; Vega, Vanessa; Paniagua, Ximena
- ItemRecent Advances in Least-Squares and Discontinuous Petrov-Galerkin Finite Element Methods(De Gruyter, 2019) Bertrand F.; Demkowicz L.; Gopalakrishnan J.; Heuer N.© 2019 Walter de Gruyter GmbH, Berlin/Boston 2019.Least-squares (LS) and discontinuous Petrov-Galerkin (DPG) finite element methods are an emerging methodology in the computational partial differential equations with unconditional stability and built-in a posteriori error control. This special issue represents the state of the art in minimal residual methods in the L2-norm for the LS schemes and in dual norm with broken test-functions in the DPG schemes.
- ItemSpeakers counting by proposed nested microphone array in combination with limited space SRP(European Signal Processing Conference, EUSIPCO, 2021) Firoozabadi A.D.; Durney H.; Sanhueza M.; Irarrazaval P.; Adasme P.; Zabala-Blanco D.; Palacios-Jativa P.; Azurdia-Meza C.© 2021 European Signal Processing Conference. All rights reserved.In this paper, a novel method is presented for estimating the number of speakers based on the microphone arrays. Firstly, a 3D snowflake nested microphone array (SNMA) is proposed for recording the speech signals. In the following, the steered response power (SRP) algorithm is implemented on subbands in limited spaces conditions for all microphone pairs related to the subarrays. Therefore, a weighted averaging method is implemented on subband limited spaces SRPs (LSRP), and the final energy map is compared with the histogram of the maximums of the SRP function on different subbands for various time frames. The passed candidate points are categorized by unsupervised K-means clustering and the number of speakers is estimated by the silhouette criteria. The accuracy of the proposed method is compared with PENS, i-vector PLDA, and wavelet-GEVD algorithms. The results show the superiority of the proposed method in comparison with other previous research.
- ItemThe transport of cumulus egg masses through the ampullae of the oviducts in the pigtailed, Macaca nemestrina(1991) Villalon M.; Verdugo P.; Boling J.; Blandau R.
- ItemThree-dimensional sound source localization by distributed microphone arrays(European Signal Processing Conference, EUSIPCO, 2021) Firoozabadi A.D.; Durney H.; Sanhueza M.; Irarrazaval P.; Adasme P.; Zabala-Blanco D.; Palacios-Jativa P.; Azurdia-Meza C.© 2021 European Signal Processing Conference. All rights reserved.Multiple sound source localization (SSL) is one of the applicable and important areas in the speech signal processing. In this paper, a two-step method is proposed for multiple 3D SSL based on the time delay estimation (TDE) in combination with distributed microphone arrays (DMA). In the first step, the direction of speakers are estimated by the use of a circular microphone array (CMA) in the center of the room and implementing the generalized cross-correlation (GCC) function. In the second step, the distributed T-shaped microphone arrays on the walls are considered for 3D SSL. The two most closed T-shaped array to each speaker are selected, where one of them is used for horizontal and the other one for vertical direction of arrival (DOA) estimation by the use of generalized eigenvalue decomposition (GEVD) algorithm. The experiments on the simulated data for 2 and 3 simultaneous speakers show the superiority of the proposed distributed microphone array-direction of arrival estimators (DMA-DOAE) method in comparison with other previous works in noisy and reverberant environments.
- ItemVR-Based User Interactions to Exploit Infinite Space in Programming Activities(IEEE Computer Society, 2021) Segura Castillo, Víctor Stefano; Merino Del Campo, Leonel Alejandro; Hecht, Geoffrey; Bergel, Alexandre© 2021 IEEE.Virtual reality (VR) devices have now become a commodity, and as such, VR is percolating the traditional working environment of software programmers. Current approaches to use VR as the medium to immerse software programmers essentially project classical IDE windows in the virtual environment: the very same VSCode or IntelliJ window is seen through the VR device. As a consequence, the same constraints imposed by a physical screen are found in the VR environment, thus representing a missed opportunity. VRIDE is a new VR-based environment for object-oriented programming to let software developers carry out their activities in a full VR-based immersed environment. VRIDE innovates by offering interactions based on Code Cubes that are designed to exploit the infinite space in the VR environment. Through code cube interactions our approach disrupts the traditional mapping of windows from desktop to VR by supporting dedicated actions for navigation, inspection, and space management. Our prototype illustrates the feasibility of having a full-immersive virtual environment for software programmers.