Search results for "TPR"
showing 10 items of 911 documents
Precise measurement of the top quark mass in the dilepton channel at D0
2011
We measure the top quark mass (mt) in ppbar collisions at a center of mass energy of 1.96 TeV using dilepton ttbar->W+bW-bbar->l+nubl-nubarbbar events, where l denotes an electron, a muon, or a tau that decays leptonically. The data correspond to an integrated luminosity of 5.4 fb-1 collected with the D0 detector at the Fermilab Tevatron Collider. We obtain mt = 174.0 +- 1.8(stat) +- 2.4(syst) GeV, which is in agreement with the current world average mt = 173.3 +- 1.1 GeV. This is currently the most precise measurement of mt in the dilepton channel.
Search for third generation scalar leptoquarks in pp collisions at √s = 7 TeV with the ATLAS detector
2013
A search for pair-produced third generation scalar leptoquarks is presented, using proton-proton collisions at √s = 7 TeV at the LHC. The data were recorded with the ATLAS detector and correspond to an integrated luminosity of 4.7 fb[superscript −1]. Each leptoquark is assumed to decay to a tau lepton and a b-quark with a branching fraction equal to 100%. No statistically significant excess above the Standard Model expectation is observed. Third generation leptoquarks are therefore excluded at 95% confidence level for masses less than 534 GeV.
The exposure of the hybrid detector of the Pierre Auger Observatory
2010
The Pierre Auger Observatory is a detector for ultra-high energy cosmic rays. It consists of a surface array to measure secondary particles at ground level and a fluorescence detector to measure the development of air showers in the atmosphere above the array. The ‘‘hybrid” detection mode combines the information from the two subsystems. We describe the determination of the hybrid exposure for events observed by the fluorescence telescopes in coincidence with at least one water-Cherenkov detector of the surface array. A detailed knowledge of the time dependence of the detection operations is crucial for an accurate evaluation of the exposure. We discuss the relevance of monitoring data coll…
The Fluorescence Detector of the Pierre Auger Observatory
2010
The Pierre Auger Observatory is a hybrid detector for ultra-high energy cosmic rays. It combines a surface array to measure secondary particles at ground level together with a fluorescence detector to measure the development of air showers in the atmosphere above the array. The fluorescence detector comprises 24 large telescopes specialized for measuring the nitrogen fluorescence caused by charged particles of cosmic ray air showers. In this paper we describe the components of the fluorescence detector including its optical system, the design of the camera, the electronics, and the systems for relative and absolute calibration. We also discuss the operation and the monitoring of the detecto…
Evidence for the spin-0 nature of the Higgs boson using ATLAS data
2013
We acknowledge the support of ANPCyT, Argentina; YerPhl, Armenia; ARC, Australia; BMWF and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF, DNSRC and Lundbeck Foundation, Denmark; EPLANET, ERC and NSRF, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France; GNSF, Georgia; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; GSRT and NSRF, Greece; ISF, MINERVA, GIF, DIP and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; BRF and RCN, Norway; MNiSW, Poland; GRICES and FCT, Portu…
A neural network clustering algorithm for the ATLAS silicon pixel detector
2014
A novel technique to identify and split clusters created by multiple charged particles in the ATLAS pixel detector using a set of artificial neural networks is presented. Such merged clusters are a common feature of tracks originating from highly energetic objects, such as jets. Neural networks are trained using Monte Carlo samples produced with a detailed detector simulation. This technique replaces the former clustering approach based on a connected component analysis and charge interpolation. The performance of the neural network splitting technique is quantified using data from proton-proton collisions at the LHC collected by the ATLAS detector in 2011 and from Monte Carlo simulations. …
Eye movements when reading sentences with handwritten words.
2016
The examination of how we read handwritten words (i.e., the original form of writing) has typically been disregarded in the literature on reading. Previous research using word recognition tasks has shown that lexical effects (e.g., the word-frequency effect) are magnified when reading difficult handwritten words. To examine this issue in a more ecological scenario, we registered the participants’ eye movements when reading handwritten sentences that varied in the degree of legibility (i.e., sentences composed of words in easy vs. difficult handwritten style). For comparison purposes, we included a condition with printed sentences. Results showed a larger reading cost for sentences with dif…
E - MĀCĪBU LĪDZEKĻU IZMANTOŠANA LASĪTPRASMES SEKMĒŠANAI PIRMSSKOLĀ
2021
Darba nosaukums: E-mācību līdzekļu izmantošana lasītprasmes sekmēšanai pirmsskolā Autors: Katrīna Kleinberga Darba zinātniskais vadītājs: Asoc. profesore Dr.paed. Gunta Siliņa-Jasjukeviča Darba sastāv no: 71 lapas, 14 datu tabulām, 5 pielikumiem un 31 literatūras avota Bakalaura darba mērķis: Bakalaura darba teorētiskajā daļā tiek analizēta iegūtā informācija par e-mācību līdzekļu izmantošanu un to pielietojumu mūsdienu pirmsskolā, kā arī par tradicionālo mācību līdzekļu izmantošanu pirmsskolā. Tiek analizēta iegūtā informācija to plusi un mīnusi lasītprasmes sekmēšanai pirmsskolā kā arī inovatīvie piemēri Latvijā, kā izmantot jaunākās tehnoloģijas darbam ar 5-6 gadīgu bērnu, sekmējot lasīt…
Tekstpratība un piktogrammu izmantošana fiziskajās aktivitātēs
2019
Kvalifikācijas darbs: Tekstpratība un piktogrammu izmantošana fiziskajās aktivitātēs Darba autors: Justīne Bergmane-Karkovska Darba zinātniskā vadītāja: Inta Bula-Biteniece Pētījuma mērķis:. fizisko aktivitāšu kopuma izveide bērnu tekstpratības apguvei izmantojot piktogrammas. Pētījuma uzdevumi: 1. analizēt literatūru par 3-4 gadus vecu bērnu pedagoģiski psiholoģiskajiem aspektiem, tekstpratības un lasītpratības attīstīšanu fiziskajās aktivitātēs un piktogrammu izmantošanas iespējām. 2. izveidot fizisko aktivitāšu kopumu bērnu tekstpratības apguvei izmantojot piktogrammas 3. noteikt fizisko aktivitāšu kopuma efektivitāti bērnu tekstpratības apguvei pirmsskolas izglītības iestādē Kvalifikāci…
Rotaļas un dabas materiālu lietošana 4 -5 gadu vecu bērnu stāstītprasmes sekmēšanai
2018
Pētījuma darba autore : Madara Labanoviča Pētījuma darba vadītājs: Asoc. prof., Dr. paed. Agrita Tauriņa. Darba veids: kvalifikācijas darbs Darba apjoms: 54 lpp, 30 literatūras avoti; 9 tabulas, 19 attēli, 2 nodaļas un 6 apakšnodaļas, 6 pielikumi. Darbs sastāv no divām daļām: 1. 4 – 5 gadīgo bērnu stāstītprasmes attīstība. 2. Vidējās pirmskolas vecuma bērnu stāstītprasmes izpēte. Pētījuma mērķis: Teorētiski un praktiski izpētīt, kā, strādājot ar dabas materiāliem, var palīdzēt sekmēt bērna runas attīstību. Pētījuma metodes: pedagoģiskās, psiholoģiskās un metodiskās literatūras analīze; novērošana; aptauja pētījuma datu matemātiskā analīze; Darba autore pētījumā pārbaudīja, ka stāstītp…