Search results for "Mask"
showing 10 items of 506 documents
Measurement of the single-top-quark production cross section at CDF.
2008
We report a measurement of the single top quark production cross section in 2.2 ~fb-1 of p-pbar collision data collected by the Collider Detector at Fermilab at sqrt{s}=1.96 TeV. Candidate events are classified as signal-like by three parallel analyses which use likelihood, matrix element, and neural network discriminants. These results are combined in order to improve the sensitivity. We observe a signal consistent with the standard model prediction, but inconsistent with the background-only model by 3.7 standard deviations with a median expected sensitivity of 4.9 standard deviations. We measure a cross section of 2.2 +0.7 -0.6(stat+sys) pb, extract the CKM matrix element value |V_{tb}|=0…
Korporācijas Fraternitas Lettica vēsturiskie posmi
1934
Saturs: I. Priekšvēsture: "Maskavas latviešu lasāms vakars", no 20.X.1870. g. - 1883. - 19.IV.1892. g. -- II. "Maskavas latviešu studentu vakars". Pirmais posms: 19.X.1883. - XII.1890. g. ; Otrais posms: XII.1890. g. - 12.I.1902. g. -- III. Maskavas latviešu studentu sabiedrība "Fraternitas Moscoviensis". Pirmais posms: 12.I.1902. g. - 26.III.1913. g. (resp. XII.1912. g.), bez krāsām ar korporācijas veidu ; Otrais posms: 26.III.1913. g. (resp. XII.1912. g.) - 27.IX.1920. g., ar krāsām - korporācija -- IV. Korporācija "Fraternitas Lettica", no 27.IX.1920. g. -- Maskavas latviešu studentu sabiedrība "Fraternitas Moscoviensis" : [statūti] -- Coetus'i 1921.-1934. g. : [saraksts].
In praise of artifice reloaded: Caution with natural image databases in modeling vision
2019
Subjective image quality databases are a major source of raw data on how the visual system works in naturalistic environments. These databases describe the sensitivity of many observers to a wide range of distortions of different nature and intensity seen on top of a variety of natural images. Data of this kind seems to open a number of possibilities for the vision scientist to check the models in realistic scenarios. However, while these natural databases are great benchmarks for models developed in some other way (e.g., by using the well-controlled artificial stimuli of traditional psychophysics), they should be carefully used when trying to fit vision models. Given the high dimensionalit…
Populism on the loose
2018
Populismitutkimus on pääosin keskittynyt etsimään populismia määrittäviä yhteisiä piirteitä tai hahmottamaan populismia sosiaalisena logiikkana. Tässä kirjassa tarkastellaan populismin sisäisiä eroja. Populismi vaihtelee ensinnäkin kulttuurikontekstin mukana. Populistiset liikkeet ovat jopa yhteiskunnallisesti samankaltaisissa maissa, kuten Pohjoismaissa, yleensä varsin erilaisia. Toiseksi populismiin vaikuttavat merkittävästi sellaiset muuttujat kuin sukupuoli, luokka ja uskonto. Ja kolmanneksi populismin käsite sinänsä ”irti” tavalla, johon sopii Ernesto Laclaun populismiteoriasta tuttu termi ”kelluva merkitsijä”. Tämän kirjan otsikko, ”Populism on the loose”, viittaa yhtä aikaa kahteen e…
Mixed Fault Classification of Sensorless PMSM Drive in Dynamic Operations Based on External Stray Flux Sensors
2022
This paper aims to classify local demagnetisation and inter-turn short-circuit (ITSC) on position sensorless permanent magnet synchronous motors (PMSM) in transient states based on external stray flux and learning classifier. Within the framework, four supervised machine learning tools were tested: ensemble decision tree (EDT), k-nearest neighbours (KNN), support vector machine (SVM), and feedforward neural network (FNN). All algorithms are trained on datasets from one operational profile but tested on other different operation profiles. Their input features or spectrograms are computed from resampled time-series data based on the estimated position of the rotor from one stray flux sensor t…
Henkilöhahmon sisäinen konflikti Väinö Linnan romaanissa Tuntematon sotilas
2015
The object of this study is character´s internal conflict in the novel. The primary research question is: What are the internal conflicts of characters like in Väinö Linna’s novel The Unknown Soldier? An answer to the primary research question is sought by answering the following secondary research questions: What are the specific internal conflicts like? How do they manifest? What are the most important effects they have on the structure of the narrative? What kinds of groups of characters are possible to form? How could the traditional notion of characters internal conflict, as it is traditionally defined in literary studies, be developed? In this study, internal conflict takes place when…
Evidence for the associated production of a W boson and a top quark in ATLAS at √s = 7 TeV
2012
This Letter presents evidence for the associated production of a W boson and a top quark using 2.05 fb[superscript −1] of pp collision data at √s = 7 TeV accumulated with the ATLAS detector at the LHC. The analysis is based on the selection of the dileptonic final states with events featuring two isolated leptons, electron or muon, with significant transverse missing momentum and at least one jet. An approach based on boosted decision trees has been developed to improve the discrimination of single top-quark Wt events from background. A template fit to the final classifier distributions is performed to determine the cross-section. The result is incompatible with the background-only hypothes…
Austruma vēsture [Austrums]
1940
Pervasive access to MRI bias artifact suppression service on a grid.
2009
Bias artifact corrupts magnetic resonance images in such a way that the image is afflicted by illumination variations. Some of the authors proposed the Exponential Entropy Driven - Homomorphic Unsharp Masking (E2D-HUM) algorithm that corrects this artifact without any a priori hypothesis about the tissues or the Magnetic Resonance image modality. Moreover, E2D-HUM does not care about the body part under examination and does not require any particular training task. People who want to use this algorithm, which is Matlab-based, have to set their own computers in order to execute it. Furthermore, they have to be Matlab-skilled to exploit all the features of the algorithm. In our work we propos…