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Wyszukujesz frazę "Rodriguez-M., R." wg kryterium: Autor


Tytuł:
Space use and activity in a mediterranean population of badgers Meles meles
Autorzy:
Martin, R.
Delibes, M.
Rodriguez, A.
Powiązania:
Acta Theriologica
Opis:
Activity, spatial ecology, and pattern of sett use of a mediterranean population of badgers Meles meles Linnaeus, 1758 are described. Data come from Doñana National Park (SW Spain) were a 1-year radio-tracking study and 9-year capture-recapture study were carried out. Badger home ranges were spatially structured, territories having an average size that is the largest reported in the literature.
Dostawca treści:
RCIN - Repozytorium Cyfrowe Instytutów Naukowych
Książka
Tytuł:
Fusion of door and corner features for scene recognition
Autorzy:
Chacon-Murguia, M. I.
Sandoval-Rodriguez, R.
Guerrero-Saucedo, C. P.
Tematy:
scene recognition
robotics
corner detection
Pokaż więcej
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Powiązania:
https://bibliotekanauki.pl/articles/384964.pdf  Link otwiera się w nowym oknie
Opis:
Scene recognition is a paramount task for autonomous systems that navigate in open scenarios. In order to achie ve high scene recognition performance it is necesary to use correct information. Therefore, data fusion is beco ming a paramount point in the design of scene recognition systems. This paper presents a scenery recognition system using a neural network hierarchical approach. The system is based on information fusion in indoor scenarios. The system extracts relevant information with respect to color and landmarks. Color information is related mainly to localization of doors. Landmarks are related to corner de tection. The corner detection method proposed in the pa per based on corner detection windows has 99% detection of real corners and 13.43% of false positives. The hierar chical neural systems consist on two levels. The first level is built with one neural network and the second level with two. The hierarchical neural system, based on feed for ward architectures, presents 90% of correct recognition in the first level in training, and 95% in validation. The first ANN in the second level shows 90.90% of correct recogni tion during training, and 87.5% in validation. The second ANN has a performance of 93.75% and 91.66% during training and validation, respectively. The total perfor mance of the systems was 86.6% during training, and 90% in validation.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
CO2 storing capacity in geologic formations in the Czech Republic
Autorzy:
Bujok, P.
Klempa, M.
Labus, K.
Porzer, M.
Panek, P.
Rado, R.
Gonzalez-Rodriguez, M.
Tematy:
CO2 storage
CO2 storage in geologic formations in the Czech Republic
boreholes for CO2 storage
modelling of CO2 storage
laboratory methods for CO2 storage
Pokaż więcej
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Powiązania:
https://bibliotekanauki.pl/articles/299299.pdf  Link otwiera się w nowym oknie
Opis:
The CO2 emission is a significant environmental problem threatening the sustained development of mankind. One of the possible ways of limiting the emission is the disposal of carbon dioxide in geologic formations.A pilot project of CO2 storage in geologic formations in the Czech Republic (REPP-CO2) is presented in this paper. The project is part of the Norwegian Fund and the research consortium (headed by the Czech Republic Geologic Office), with VSB-TU Ostrava as a participant. The VSB-TU Ostravais represented by the Faculty of Geology and Mining (HGF) and the Faculty of Metallurgy and Materials Science (FMMI) in the consortium.The research activity of the consortium mainly focuses on the development and improvement of selected laboratory methods, modelling and simulation, which are basic for the evaluation of safety of CO2 storing in geologic forma-tions. Thise paper presents the research conducted by the Faculty of Geology and Mining (HGF) VSB-TU Ostrava within the project.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of air temperature on forecasting the start of Cupressaceae pollen type in Ponferrada [Leon, Spain]
Autorzy:
Fuertes-Rodriguez, C R
Gonzales-Parrado, Z.
Vega-Maray, A.M.
Valencia-Barrera, R.M.
Fernandez-Gonzales, D.
Tematy:
Ponferrada
woody plant
pollen
aerobiology
heat requirement
Leon
Cupressaceae
forecast
chilling requirement
Spain
dormancy
Pokaż więcej
Wydawca:
Instytut Medycyny Wsi
Powiązania:
https://bibliotekanauki.pl/articles/50902.pdf  Link otwiera się w nowym oknie
Opis:
In order to survive periods of adverse cold climatic conditions, plant requirements are satisfi ed by means of physiological adaptations to prevent cells from freezing. Thus, the growth of woody plants in temperate regions slows down and they enter into a physiological state called dormancy. In order to identify the chilling and heat requirements to overcome the dormancy period of Cupressaceae pollen type in the south of Europe, we have carried out our study with aerobiological data from a 10-year (1996- 2005) period in Ponferrada, León (Spain). For the chilling requirements the best result was with a threshold temperature of 7.1ºC and an average of 927 CH. Calculation of heat requirements was carried out with maximum temperature, with 490 growth degree days (GDD) needed, with a threshold temperature of 0ºC. We have used the 2002-2003, 2003- 2004 and 2004-2005 periods in order to determine the real validity of the model. We have not used these years in developing the models. The dates predicted differ in only a few days from those observed: in 2002-2003 there was a difference of 11 days, in 2003-2004 predicted and observed dates were the same, but in 2004-2005 the difference obtained was of 43 days.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamic optimal grasping of a circular object with gravity using robotic soft-fingertips
Autorzy:
García-Rodríguez, R.
Segovia-Palacios, V.
Parra-Vega, V.
Villalva-Lucio, M.
Tematy:
dynamic grasping
soft fingertips
circular object
Pokaż więcej
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Powiązania:
https://bibliotekanauki.pl/articles/330784.pdf  Link otwiera się w nowym oknie
Opis:
Object manipulation usually requires dexterity, encoded as the ability to roll, which is very difficult to achieve with robotic hands based on point contact models (subject to holonomic constraints). As an alternative for dexterous manipulation, deformable contact with hemispherical shape fingertips has been proposed to yield naturally a rolling constraint. It entails dexterity at the expense of dealing with normal and tangential forces, as well as more elaborated models and control schemes. Furthermore, the essential feature of the quality of grasp can be addressed with this type of robot hands, but it has been overlooked for deformable contact. In this paper, a passivity-based controller that considers an optimal grasping measure is proposed for robotic hands with hemispherical deformable fingertips, to manipulate circular dynamic objects. Optimal grasping that minimizes the contact wrenches is achieved through fingertip rolling until normal forces pass through the center of mass of the object, aligning the relative angle between these normal forces. The case of a circular object is developed in detail, though our proposal can be extended to objects with an arbitrary shape that admit a local decomposition by a circular curvature. Simulation and experimental results show convergence under various conditions, wherein rolling and tangent forces become instrumental to achieve such a quality of grasp.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Histopathological modifications induced ny mebendazole and niridazole on encysted larvae of Trichinella spiralis in CD-1 mice
Modyfikacje zmian histopatologicznych w encystowanych larwach Trichinella spiralis wywołane podawaniem mebendazolu i niridazolu u myszy CD-1
Modifikacii gistopatologicheskikh izmenenijj v ehcistirovannykh lichinkakh Trichinella spiralis, vyzvannoe podachejj mebendazola i niridazola u myshejj CD-1
Autorzy:
Martinez-Fernandez, A.R.
Samartin-Duran, M.L.
Toro Rojas, M.
Ubeira, F.M.
Rodriguez Cabeiro, F.
Wydawca:
Polskie Towarzystwo Parazytologiczne
Powiązania:
https://bibliotekanauki.pl/articles/2152739.pdf  Link otwiera się w nowym oknie
Dostawca treści:
Biblioteka Nauki
Artykuł

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