3,946 research outputs found
The Development of Dm. Kabalevskii Ideas in Contemporary Musical Pedagogy
No full textMusical pedagogy has a long way of training and development. Over the decades, we can follow schools, systems and personalities through which this area is grounded. Based on various factors, such as the geographical location, the purpose of the system or school pursued, the possibilities of interpretation, the contemporary musical pedagogy enumerates well-known personalities, on whose researches this field is based. Dm. Kabalevsky’s name and his successors notably record in the musical-educational system of the Republic of Moldova
Vývoj metód pre elektrochemické stanovenie chloramfenikolu a dinitraminu na amalgámových elektródach
No full textThe first part of this diploma thesis deals with the determination of chloramphenicol (CLF) on the retractable-pen-based renewable silver amalgam film electrode (RAE) by differential pulse voltammetry (DPV). Calibration dependencies in the concentration range of 10-100 µmol dm−3 and 1-10 µmol dm−3 were obtained. Repeated RAE surface restoration when determining CLF does not contribute to the repeatability of the signal. The determination limit was 2,2 µmol dm−3 . In the second part of the work, the conditions for the determination of dinitramine (DN) were examined on the meniscus-modified silver solid amalgam electrode by DPV technique. The Britton-Robinson buffer pH 5 was chosen as the optimal medium. In this electrolyte, the impact of regeneration potentials on DN signal stability was monitored. Regeneration pulses or methanol rinses did not contribute to the stability of the signal. There is a strong passivation on the electrode, so this type of electrode is not suitable for determination of this analyte. The possible solution is to use RAE, in which mechanical surface restoration is an effective way of solving the passivation on the electrode surface. In the third part of the work, dinitramine was studied at the RAE. The best repeatability of the measurements was achieved by activation of the...Prvá časť tejto diplomovej práce sa zaoberá stanovením chloramfenikolu (CLF) metódou diferenčnej pulznej voltampérometrie (DPV) na striebornej amalgámovej filmovej elektróde obnoviteľnej mechanizmom klikacieho pera (RAE). Boli získané kalibračné závislosti pre rozsah 10-100 µmol dm−3 a 1-10 µmol dm−3 . Opakovaná obnova povrchu RAE pri stanovení CLF neprispieva k opakovateľnosti signálu. Medza stanoviteľnosti bola určená na 2,2 µmol dm−3 . V druhej časti práce boli skúmané podmienky pre stanovenie dinitraminu (DN) na meniskom modifikovanej striebornej pevnej amalgámovej elektróde pomocou techniky DPV. Prostredie Brittonov-Robinsonovho pufru o pH 5 bolo zvolené ako optimálne. V tomto prostredí bol sledovaný vplyv regeneračných potenciálov na stabilitu signálu DN. Regeneračné pulzy ani oplachy metanolom neprispievali k stabilite signálu. Na elektróde dochádza k silnej pasivácii, preto tento typ elektródy nie je vhodný na stanovenie tohoto analytu. Riešenie sa ponúkalo v podobe RAE, u ktorej je mechanická obnova povrchu efektívny spôsob riešenia pasivácie na povrchu elektródy. V tretej časti práce bol dinitramin študovaný na RAE. Najlepšia opakovateľnosť meraní bola docielená aktiváciou elektródy, opláchnutím elektródy metanolom a obnovou jej povrchu. V optimálnom prostredí Brittonov-Robinsonovho pufru...Katedra analytické chemieDepartment of Analytical ChemistryFaculty of SciencePřírodovědecká fakult
Proof postcard
No full textSeptember 11-14, 2003. DM. Written by David Auburn. Directed by Heather Rae Miller.https://digitalcommons.fiu.edu/theatre_posters/1046/thumbnail.jp
Entanglement and quantity in quantum space - About quantum measurement (II)
No full textAs a continuation and extension of "quantity in phase space" "quantity in quantum space" is introduced. With that, the disappearing of quantum interference discussed in a previous paper [S. Durr, et al., Nature 395 (1998) 33] is explained in the same spirit as our recent papers [Ren De-Ming, Commun. Theor. Phys. (Beijing, China) 41 (2004) 685, 833].Physics, MultidisciplinarySCI(E)中国科学引文数据库(CSCD)1ARTICLE133-364
Sneutrino DM in the NMSSM with inverse seesaw mechanism
No full textIn supersymmetric theories like the Next-to-Minimal Supersymmetric Standard Model (NMSSM), the lightest neutralino with bino or singlino as its dominant component is customarily taken as dark matter (DM) candidate. Since light Higgsinos favored by naturalness can strength the couplings of the DM and thus enhance the DM-nucleon scattering rate, the tension between naturalness and DM direct detection results becomes more and more acute with the improved experimental sensitivity. In this work, we extend the NMSSM by inverse seesaw mechanism to generate neutrino mass, and show that in certain parameter space the lightest sneutrino may act as a viable DM candidate, i.e. it can annihilate by multi-channels to get correct relic density and meanwhile satisfy all experimental constraints. The most striking feature of the extension is that the DM-nucleon scattering rate can be naturally below its current experimental bounds regardless of the higgsino mass, and hence it alleviates the tension between naturalness and DM experiments. Other interesting features include that the Higgs phenomenology becomes much richer than that of the original NMSSM due to the relaxed constraints from DM physics and also due to the presence of extra neutrinos, and that the signatures of sparticles at colliders are quite different from those with neutralino as DM candidate.National Natural Science Foundation of China (NNSFC) [11575053]SCI(E)ARTICLE1
Classical mechanics and quantum mechanics
No full textThe Newton equation of motion is derived from quantum mechanics.Physics, MultidisciplinarySCI(E)中国科学引文数据库(CSCD)2ARTICLE5685-6884
Development of methods for the voltammetric determination of chloramphenicol and dinitramin at amalgam electrodes
No full textThe first part of this diploma thesis deals with the determination of chloramphenicol (CLF) on the retractable-pen-based renewable silver amalgam film electrode (RAE) by differential pulse voltammetry (DPV). Calibration dependencies in the concentration range of 10-100 µmol dm−3 and 1-10 µmol dm−3 were obtained. Repeated RAE surface restoration when determining CLF does not contribute to the repeatability of the signal. The determination limit was 2,2 µmol dm−3 . In the second part of the work, the conditions for the determination of dinitramine (DN) were examined on the meniscus-modified silver solid amalgam electrode by DPV technique. The Britton-Robinson buffer pH 5 was chosen as the optimal medium. In this electrolyte, the impact of regeneration potentials on DN signal stability was monitored. Regeneration pulses or methanol rinses did not contribute to the stability of the signal. There is a strong passivation on the electrode, so this type of electrode is not suitable for determination of this analyte. The possible solution is to use RAE, in which mechanical surface restoration is an effective way of solving the passivation on the electrode surface. In the third part of the work, dinitramine was studied at the RAE. The best repeatability of the measurements was achieved by activation of the..
Policy-driven Data Sharing over Attribute-Based Encryption supporting Dual Membership
No full textAttribute-Based Encryption (ABE) plays an important role in current secure data sharing through fine-grained customizable policies. However, the existing ABE schemes only support simple predicates, = and ≠, but cannot express a more general membership predicates, ∈ and ∉, in policies. The low expressivity of ABE will enlarge the ciphertext storage and reduce the communication efficiency. To overcome this problem, we propose an ABE supporting Dual Membership (DM-ABE). The core problem for implementing this scheme is how to use cryptographic methods to decide the membership between the verified element and the given set. In order to solve this problem, we design a cryptographic algorithm, called Secure Decision of Membership (SDM), based on aggregation functions. In this algorithm, any set can be aggregated into one cryptographic element, and the verified element and the given set can be converted into another cryptographic element in decision process. The membership between them can be decided by the above two cryptographic elements. Furthermore, we construct the DM-ABE by using SDM. Because of the good expressivity of our DM-ABE, we further propose a novel cryptographic data sharing framework by integrating DM-ABE and attribute-based access control to provide fine-grained access control and security protection for private data. In the security proof of DM-ABE, we prove that the DM-ABE satisfies the semantic security against chosen-plaintext attacks under the DBDHE assumption in the standard model through a unified way, considering both two encryption methods for ∈ and ∉ at the same time. Finally, we analyze our scheme in terms of time and space complexity, and compare it with some existing schemes. The results show that our DM-ABE has a better expressive ability on the boolean logic of general membership predicates, ∈ and ∉.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Cyber Securit
Coach decision-making and the relative age effect on talent selection in football
No full textResearch Question(s): Talent selection is a stepping stone to sporting success at national and international levels. The research questions that guided this study were: (a) What is the decision-making (DM) process that coaches (as key selectors) use during talent selection? and (b) In what ways does awareness of the relative age effect (RAE) influence their DM?
Research Methods: This study employed an action research approach in order to raise coach awareness of RAE on talent selection to examine the decisions surrounding selection of players. From a sample of 263 male football (soccer) players (age range 12–15) and 4 coaches, qualitative and quantitative data were collected on coach decisions for selection of players and frequencies of selected players in birth-months. Secondary data were also gathered from previous year's selections.
Results and Findings: Logistic regression showed that coaches’ awareness of RAE did not eliminate nor reduce it. In-depth interviews revealed that coaches’ DM was influenced by preconceptions and various pressures to select certain players. Pressures resonated within the volatile nature of their profession and career goals, the existence of competing decision-makers such as peers and parents, and the tension to select players for immediate success.
Implications: The results lead to the consideration of various practical recommendations on coach organisation, coach education and alternative interventions in DM such as an alternative staged approach to talent selection that lends itself open for future research.Griffith Business School, Department of Tourism, Sport and Hotel ManagementNo Full Tex
Constraining the Inner Galactic DM Density Profile with H.E.S.S.
No full text© 2024 by the author. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).In this short review, corresponding to a talk given at the conference “Cosmology 2023 in Miramare”, we combine an analysis of five regions observed by H.E.S.S. in the Galactic Center, intending to constrain the Dark Matter (DM) density profile in a WIMP annihilation scenario. For the analysis, we include the state-of-the-art Galactic diffuse emission Gamma-optimized model computed with DRAGON and a wide range of DM density profiles from cored to cuspy profiles, including different kinds of DM spikes. Our results are able to constrain generalized NFW profiles with an inner slope ≳1.3 . When considering DM spikes, the adiabatic spike is completely ruled out. However, smoother spikes given by the interactions with the bulge stars are compatible if ≲0.8 , with an internal slope of sp-stars=1.5.This work has been supported by the grants PID2021-125331NB-I00, PID2022-139841NB-I00, and CEX2020-001007-S, funded by MCIN/AEI/10.13039/501100011033, by “ERDF A way of making Europe”, and the MULTIDARK Project RED2022-134411-T. The author’s contribution to this work has been supported by the FPI Severo Ochoa PRE2021-099137 grant.With funding from the Spanish government through the ‘Severo Ochoa Centre of Excellence’ accreditation (CEX2020-001007-S).Peer reviewe
- …
