Search results for "algebra"
showing 10 items of 4129 documents
Mo2021 Predicting Polyp Histology - Development and Validation of an International Simple Endoscopic Classification of Small Colorectal Polyps Using …
2017
Voluntary and Involuntary Attention in Bistable Visual Perception: A MEG Study
2020
In this study, voluntary and involuntary visual attention focused on different interpretations of a bistable image, were investigated using magnetoencephalography (MEG). A Necker cube with sinusoidally modulated pixels' intensity in the front and rear faces with frequencies 6.67 Hz (60/9) and 8.57 Hz (60/7), respectively, was presented to 12 healthy volunteers, who interpreted the cube as either left- or right-oriented. The tags of these frequencies and their second harmonics were identified in the average Fourier spectra of the MEG data recorded from the visual cortex. In the first part of the experiment, the subjects were asked to voluntarily control their attention by interpreting the cu…
A Rare Accident
2007
In 1964, I moved from Vienna to Homburg/Saar to take an Associate Professor position in one of the most recognized departments of urology headed by Prof. C.E. Alken. Still on duty at 4 p.m., I received a call from the chief of the surgical department to join him immediately in the emergency room.
The Development of a Multidisciplinary Spine Center: A New Shared Approach for Pain Care
2017
Evaluation of a lattice-Boltzmann method for mercury intrusion porosimetry simulations
2004
We have simulated intrusion of a non-wetting liquid into pores of varying shape and size. Simulations were based on the lattice-Boltzmann method and the Shan–Chen multiphase model. The liquid–solid contact angle for pores with circular cross-section was found to be equal to that for pores with square cross-section, and constant even for small pore sizes if the discretised shape of the circular cross-section was taken into account. For comparison, contact angle was also determined for a liquid column descending in a capillary tube, and the results were found to be consistent. Application of the method to mercury intrusion porosimetry is discussed.
"Figure 5a" of "Measurement of jet-medium interactions via direct photon-hadron correlations in Au$+$Au and $d$$+$Au collisions at $\sqrt{s_{_{NN}}}=…
2021
$I_{AA}$ vs $\xi$ for direct photon $p_{T}^{\gamma}$ of 5-7 GeV/$c$, 7-9 GeV/$c$, and 9-12 GeV/$c$.
Moment Map and Gelfand Transform for the Enveloping Algebra
2019
International audience; Describing the Gelfand construction for the analytic states on an universal enveloping algebra, we characterize pure states and re-find the main result of a preceding work with L. Abdelmoula and J. Ludwig on the separation of unitary irreducible representations of a connected Lie group by their generalized moment sets.
Analysis of the psicometric properties of a multiplication and division processes assessment scale
2019
Esta comunicación se encuentra disponible en la siguiente URL: http://www.infad.eu/RevistaINFAD/OJS/index.php/IJODAEP/article/view/1464/1321 Este número está dedicado a la "Psicología de la Educación y Saberes Originarios". The domain of multiplication and division operations depends on both algorithm management and the ability to identify the semantic structure of the problem and to translate it into mathematical language. Many students present difficulties in identifying the semantic structure of the problem but not applying the algorithm when the problem is presented numericaly. The aim of the study is to validate an assessment tool of the processes involved in multiplication and divisio…
Comparison of frictional resistance between passive self-ligating brackets and slide-type low-friction ligature brackets during the alignment and lev…
2019
Background To compare the frictional resistance between passive self-ligating brackets and conventional brackets with low-friction ligature under bracket/archwire and root/bone interface during dental alignment and leveling. Material and methods A tridimensional model of the maxilla and teeth of a patient treated with conventional brackets, and slide ligatures was generated employing the SolidWorks modeling software. SmartClip self-ligating brackets and Logic Line conventional brackets were assembled with slide low-friction ligatures, utilizing archwires with different diameters and alloys used for the alignment and leveling stage. Friction caused during the bracket/archwire interface and s…
Muuttujat viidesluokkalaisten matematiikassa
2011
Algebran on useissa tutkimuksissa havaittu olevan oppilaille hankala aihe. Kuitenkin sen opettamisesta tavanomaista aiemmin on saatu myönteisiä kokemuksia. Tämä tutkimus selvitti viidesluokkalaisten valmiuksia käsitellä muuttujia matematiikassa. Aiempien tutkimusten mukaan algebran oppimista helpottavia keskeisiä seikkoja ovat muun muassa kyky merkitä muuttuja, käsitys muuttujasta sekä kyky ratkaista muuttujia sisältäviä tehtäviä. Nämä seikat olivat perusta tämän tutkimuksen ongelmille. Lisäksi selvitettiin yleisiä virhetyyppejä, joita esiintyy oppilaiden ratkaistessa muuttujia sisältäviä tehtäviä. Kiinnostuksen kohteena oli myös ohjauksen vaikutus oppilaiden kykyyn käsitellä muuttujia. Tut…