Search results for "table"
showing 10 items of 2807 documents
Complete End-To-End Low Cost Solution To a 3D Scanning System with Integrated Turntable
2017
3D reconstruction is a technique used in computer vision which has a wide range of applications in areas like object recognition, city modelling, virtual reality, physical simulations, video games and special effects. Previously, to perform a 3D reconstruction, specialized hardwares were required. Such systems were often very expensive and was only available for industrial or research purpose. With the rise of the availability of high-quality low cost 3D sensors, it is now possible to design inexpensive complete 3D scanning systems. The objective of this work was to design an acquisition and processing system that can perform 3D scanning and reconstruction of objects seamlessly. In addition…
Bifurcation analysis of a TaO memristor model
2019
This paper presents a study of bifurcation in the time-averaged dynamics of TaO memristors driven by narrow pulses of alternating polarities. The analysis, based on a physics-inspired model, focuses on the stable fixed points and on how these are affected by the pulse parameters. Our main finding is the identification of a driving regime when two stable fixed points exist simultaneously. To the best of our knowledge, such bistability is identified in a single memristor for the first time. This result can be readily tested experimentally, and is expected to be useful in future memristor circuit designs.
Calorimetric investigation of the vulcanization of factice
1991
Sulphur factice is produced from a mixture of a vegetable oil and sulphur at temperatures between 130 and 160‡C. The slow exothermal vulcanization results in rubber-like elastomers. We have developed an isothermal calorimeter for measurements both in the liquid and the solid state and simulated the production process at the laboratory scale. The compensating calorimeter consists of a hot plate equipped with thin aluminium rods descending into a Dewar vessel. Besides optimization of the temperature control, remarkable savings of time were achieved by previous elaidinization of the oil using hydrosulphide.
Repaso a la evidencia isotópica sobre alimentación en la prehistoria valenciana durante el Mesolítico y el Neolítico
2016
Los análisis de isótopos estables son una herramienta fundamental a la hora de reconstruir la alimentación de poblaciones prehistóricas. Hasta hace poco este tipo de análisis no se había aplicado en nuestra tierra. Sin embargo, desde hace unos años el Este de la Península Ibérica se está convirtiendo en uno de los lugares del Mediterráneo donde se está realizando un mayor número de este tipo de estudios. Este artículo explica el potencial de los análisis isotópicos de carbono y nitrógeno sobre colágeno óseo para reconstruir las pautas alimentarias de poblaciones pasadas. También repasa todos los estudios publicados en tierras valencianas de cronología prehistórica publicados hasta la fecha,…
Keep your cool and win the game: Emotion regulation and performance in table tennis.
2019
Objective People often feel anxious prior to performance situations, and this can lead to performance decrements. Thus, applying effective emotion regulation strategies could be crucial for achieving maximum performance. Method We investigated the relation between dispositional precompetition emotion regulation and competition performance. Participants were 310 table tennis players (240 men, Mage = 39.07, SD = 15.99). Self-reported emotion regulation behavior was matched with objective performance data. Results We found that positive cognitive change strategies were positively related and negative cognitive change strategies were negatively related to winning in competitions. Furthermore, a…
Development of new non-dairy beverages from Mediterranean fruit juices fermented with water kefir microorganisms
2016
The aim of this work was to explore the use of several Mediterranean fruit juices as fermentable substrates to develop new non-dairy fermented beverages. Microbiological, chemical and sensory features of kefir-like beverages obtained after the fermentation of juices extracted from fruits cultivated in Sicily (southern Italy) with water kefir microorganisms were investigated. Results indicated that both lactic acid bacteria and yeasts were able to develop in the fruit juices tested, but the highest levels were registered with prickly pear fruit juice. All fruit juices underwent a lactic fermentation, since a lactic acid content was detected in the resulting kefir-like beverages. Except kiwif…
Coupling of electromembrane processes with reverse osmosis for seawater desalination: Pilot plant demonstration and testing
2022
Reverse osmosis (RO) is the most widespread technology to produce drinking water from seawater (SW). However, the integration of different membrane processes offers interesting alternatives. In this work, electromembrane processes were integrated with RO to desalinate real seawater in a pilot plant with 25 m3/day capacity. Electrodialysis (ED, either two-stage or single stage), shortcut reverse electrodialysis (scRED) and assisted reverse electrodialysis (ARED) pre-desalinated seawater before RO with the ED-ED-RO, ED-RO, and scRED-ARED-RO process schemes. Treated wastewater was used as salt sink in the scRED-ARED tests. The performance of the pilot plant can be summarized as follows: water …
Groups with few $p'$-character degrees
2019
Abstract We prove a variation of Thompson's Theorem. Namely, if the first column of the character table of a finite group G contains only two distinct values not divisible by a given prime number p > 3 , then O p p ′ p p ′ ( G ) = 1 . This is done by using the classification of finite simple groups.
Quadratic characters in groups of odd order
2009
Abstract We prove that in a finite group of odd order, the number of irreducible quadratic characters is the number of quadratic conjugacy classes.
Finite groups with real-valued irreducible characters of prime degree
2008
Abstract In this paper we describe the structure of finite groups whose real-valued nonlinear irreducible characters have all prime degree. The more general situation in which the real-valued irreducible characters of a finite group have all squarefree degree is also considered.