Institution
Sofia University
Education•Sofia, Bulgaria•
About: Sofia University is a education organization based out in Sofia, Bulgaria. It is known for research contribution in the topics: Large Hadron Collider & Standard Model. The organization has 8533 authors who have published 15730 publications receiving 306320 citations. The organization is also known as: University of Sofia & BFUS.
Topics: Large Hadron Collider, Standard Model, Population, Lepton, Laser
Papers published on a yearly basis
Papers
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TL;DR: In this article, the results of a search for heavy long-lived charged particles produced in pp collisions at the LHC were described and the results were used to establish cross section limits as a function of mass within the context of models with longlived gluinos, scalar top quarks and scalar taus.
108 citations
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TL;DR: In this paper, an audio-guided mindful awareness training program for reading and science in traditional US public elementary schools is presented, where a series of guided mindful-based awareness and attention focusing practices are used to encourage students to engage with social and emotional learning concepts.
Abstract: This paper discusses results from the first empirical study testing the feasibility and effectiveness of an audio-guided mindful awareness training program on quarterly grade performance in traditional US public elementary schools. Structured as a quasi-experiment, the study demonstrates that a 10-min-per-day, fully automated program significantly enhances students’ quarterly grades in reading and science, compared to a control group, without disrupting teaching operations (N = 191). The intervention utilized a series of guided mindful-based awareness and attention focusing practices as the method for students to engage with social and emotional learning (SEL) concepts, and can thus be called a “mindful-based social emotional learning” (MBSEL) program. The program is innovative because it requires neither expert trainers skilled in mindful awareness nor changes to existing curriculum; thus, it can be considered both teacher-independent and curriculum supportive. The goal of this exploratory study was to facilitate a consistent daily mindful awareness practice that generates improvements in student outcomes for resource- and time-constrained K–12 classrooms in the USA and elsewhere. The authors discuss limitations of this study and suggestions for further research on how to use mindful awareness programs to enhance academic performance both effectively and pragmatically.
108 citations
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TL;DR: The structure and description of this implementation of a fuzzy PID controller based on Sugeono's fuzzy technique with fuzzy-neural implementation as well as investigations toward the applied fuzzy PID control algorithms are described.
108 citations
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TL;DR: In this paper, the polarizations of the mesons were measured in proton-proton collisions at √s=7 TeV, using a data sample of Υ(nS)→μ^+μ^- decays collected by the CMS experiment, corresponding to an integrated luminosity of 4.9
Abstract: The polarizations of the Υ(1S), Υ(2S), and Υ(3S) mesons are measured in proton-proton collisions at √s=7 TeV, using a data sample of Υ(nS)→μ^+μ^- decays collected by the CMS experiment, corresponding to an integrated luminosity of 4.9 fb^(-1). The dimuon decay angular distributions are analyzed in three different polarization frames. The polarization parameters λ_ϑ, λ_φ, and λ_(ϑφ), as well as the frame-invariant quantity λ˜, are presented as a function of the Υ(nS) transverse momentum between 10 and 50 GeV, in the rapidity ranges |y|<0.6 and 0.6<|y|<1.2. No evidence of large transverse or longitudinal polarizations is seen in the explored kinematic region.
108 citations
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TL;DR: Computational results provide compelling evidence that in nonpolar, noncomplexing media and in the absence of catalysts, the mechanism of aromatic sulfonation with sulfur trioxide is concerted and does not involve the conventional σ-complex (Wheland) intermediates.
Abstract: ConspectusThe classic SEAr mechanism of electrophilic aromatic substitution (EAS) reactions described in textbooks, monographs, and reviews comprises the obligatory formation of arenium ion intermediates (σ complexes) in a two-stage process. Our findings from several studies of EAS reactions challenge the generality of this mechanistic paradigm. This Account focuses on recent computational and experimental results for three types of EAS reactions: halogenation with molecular chlorine and bromine, nitration by mixed acid (mixture of nitric and sulfuric acids), and sulfonation with SO3. Our combined computational and experimental investigation of the chlorination of anisole with molecular chlorine in CCl4 found that addition–elimination pathways compete with the direct substitution processes. Detailed NMR investigation of the course of experimental anisole chlorination at varying temperatures revealed the formation of addition byproducts. Moreover, in the absence of Lewis acid catalysis, the direct halogena...
108 citations
Authors
Showing all 8600 results
Name | H-index | Papers | Citations |
---|---|---|---|
Michael Tytgat | 134 | 1449 | 94133 |
Leander Litov | 133 | 1424 | 92713 |
Eric Conte | 132 | 1206 | 84593 |
Georgi Sultanov | 132 | 1493 | 93318 |
Plamen Iaydjiev | 131 | 1285 | 87958 |
Anton Dimitrov | 130 | 1236 | 86919 |
Jordan Damgov | 129 | 1195 | 85490 |
Borislav Pavlov | 129 | 1245 | 86458 |
Jean-Laurent Agram | 128 | 1221 | 84423 |
Cristina Botta | 128 | 1160 | 79070 |
Jean-Charles Fontaine | 128 | 1190 | 84011 |
Peicho Petkov | 128 | 1111 | 83495 |
Muhammad Ahmad | 128 | 1187 | 79758 |
Roumyana Hadjiiska | 126 | 1003 | 73091 |
Mircho Rodozov | 124 | 972 | 70519 |