770 research outputs found
The impact of stress on the physical, psychological and behavioral health components of students
No full textstudents, stress, health, студенты, стресс, здоровь
Measurement of muon tagged open heavy flavor production in Pb+Pb collisions at 2.76 TeV with ATLAS
No full textBottom quark is a very important probe to study the hot, dense medium produced in the heavy ion collisions. Bottom quark is produced at the relatively early stage of the nucleus-nucleus collisions and may have a small gluon radiation due to a suppression of small angle gluon radiation `dead cone effect’. Because the heavy mass of b-hadrons, muons from semi-leptonic b-hadron decays tend to have larger angle with respect to the jet axis. This information can be used to tag b-jets. Specifically, the transverse momentum of the muon with respect to the b-jet axis, pT^{rel}, is used to differentiate b-jets from the background charm and light quark jets. In this talk, we present the b-jet suppression R_CP, which is defined as the ratio of the average N_coll scaled yield in central collisions to that in peripheral collisions (60-80%), as a function of the muon momentum, jet momentum and the number of participants average N_part in Pb+Pb collisions at 2.76 TeV. The result is also compared with the inclusive heavy flavor suppression, which was obtained by studying single muons decayed semi-leptonically from the from the b- and c-quark containing hadrons
(n,nʹ[gamma]) reactions in 6̳3̳,̳6̳5̳Cu and background in 0[nu] [beta] [beta] experiments
No full textThesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2008.In title on title page, "[gamma], "[nu]", and "[beta]" appear as lower case Greek letters; and, double-underscored "63,65" appear as superscript.Includes bibliographical references (p. 64-66).Measurements of (n, xnʹ[gamma]) reactions in Cu are important for understanding neutroninduced background for certain underground double beta decay experiments. Neutroninduced gammas are a contribution to background for the next generation of double beta decay experiments, which are designed to reach the sensitivity of the atmospheric neutrino mass scale (45 meV). Measuring and understanding the high-energy neutron excitations of shielding materials such as natCu are crucial for establishing shielding requirements and understanding background. In particular, the regions around the Q-values of candidate 0[nu beta beta] decay isotopes must be investigated. Partial [gamma]-ray cross sections for a natural copper target were measured using the GEANIE spectrometer in a broad-spectrum neutron beam at LANSCE. The experimental apparatus, and sources of systematic and statistical error are discussed. The results provide useful data for benchmarking Monte Carlo simulation of background events in future experiments. Furthermore, measuring specific (n, nʹ) excited state transitions in this material represents a nuclear structure contribution.by Dennis V. PerepelitsaS.B
Connection between soft and hard probes of small collision systems at RHIC and LHC
No full textThe expected connections between signatures in the soft and hard sectors of small collision systems, and the status of experimental attempts to identify them, are discussed. These proceedings summarize the talk as given at the International Symposium on Multi- Particle Dynamics in September 2019 in Santa Fe, NM (ISMD19). As such, the choice of content and focus are selective and not intended to be comprehensive
Артистизм как профессиональная и личностная характеристика библиотекаря
No full textA first attempt to justify virtuosity as a necessary professional and personal quality of a librarian. Artistry is regarded as a professionalism of librarian’s activity and as a way of creative abilities’ using. The author characterizes such features of a librarian’s artistry like emotionality, openness, spontaneity, etc.В статье впервые предпринята попытка обоснования артистизма как необходимого профессионального и личностного качества библиотекаря. Артистизм рассматривается как профессионализм в деятельности библиотекаря и применение творческих способностей последнего. Автором характеризуются такие черты артистизма библиотекаря, как эмоциональность, открытость, непосредственность и др
«... I believe in the future of Russian enlightenment...»
No full textThe article is devoted to life and activity of Ivan Dmitrievich Sytin, a famous Russian book-seller and enlightener of late ХIХ - early ХХ centuries. Along with primers, books and textbooks, which were available for impoverished village people, Sytin spread his countless calendars have becoming really popular encyclopedias
До питання про межі просвітницького вербалізму.
No full textThis article is devoted to the mediating role of language in the space of the Enlightenment. The author draws on research by K. Siskin, W. Warner and O. Perepelitsa, who believe that the Enlightenment is a media phenomenon. O. Perepelitsa also argues that language is one of the main mediums of the Enlightenment, but does not clarify the conditions under which a language can perform the intermediary function. The author tries to fill up this gap. Using the comparative method, the author compares the European and Chinese Enlightenments and considers the teachings of Plato, Bacon, Locke, Freud, Confucius and Wang Yangming. The author argues that language is able to carry out their intermediary functions at a sufficiently high ontological status word and text. The high status of the word and the text has in China, where they mediate between man and Heaven. Language here connects people with higher levels of existence. Confucius is credited with the theory that the Chinese hieroglyphs are derived from the sacred symbols of Heaven and Earth. Wang Yangming asserts that the texts of the Confucian canon are the basis of everything. They are identical to the Tao and its manifestations. When these texts are identical to the manifestations of the Tao, they become intermediaries between the people and the highest levels of the ontological hierarchy. At the same time, when the unity between man and the first principles of being is achieved, language is no longer needed. At the higher levels of being silence reigns. Confucius said that he would not say anything, because the Heaven is silent, but still maintains the cosmic order. And Wang Yangming teaches that in every human heart there is Confucius, so spiritual continuity can be established without signs and texts. On the contrary, European thinkers constantly express suspicion that a word incorrectly reflects the essence of things, so the language should be cleaned and correct. The word for many of them does not have a high ontological status. Plato speaks of the discrepancy between the words and the essence of things. Bacon doubts that the language can be a mediator between the human mind and the divine ideas, which constitute the essence of things. According to Locke, the words are the signs that indicate human ideas. But the connection between the characters and ideas people set arbitrarily, so the language cannot be a good mediator. According to Freud, the true essence of man is rooted in the unconscious. It becomes apparent through misuse of words. Thus, in the universe of the Enlightenment the text and the word can lead a man to higher levels of existence, and can interfere with the movement to him. The higher ontological level, where are the word and the text, the better they are able to perform their intermediary functions. At the same time on the entity level, the status of which is greater than the status of the word and the text, the word and the text can no longer act.Данная статья посвящена проблеме посреднической роли языка в пространстве Просвещения. Автор опирается на исследования К. Сискина, В. Уорнера и О. Перепелицы. Используя компаративный метод, он сопоставляет европейское и китайское Просвещения и доказывает, что язык способен выполнять свои посреднические функции при достаточно высоком онтологическом статусе слова и текста. Язык связывает человека с высшими уровнями бытия. При этом на уровне сущностей, статус которых превышает статус слова и текста, слово и текст действовать уже не могут.Ця стаття присвячена проблемі посередницької ролі мови в просторі Просвітництва. Автор спирається на дослідження К. Сіскіна, В. Уорнера і О. Перепелиці. Використовуючи компаративний метод, він співставляє європейське і китайське Просвітництва і доводить, що мова здатна виконувати свої посередницькі функції лише завдяки досить високому онтологічному статусу слова та тексту. Мова пов’язує людину з вищими рівнями буття. При цьому на рівні сутностей, статус яких перевищує статус слова і тексту, слово і текст діяти вже не можуть
Centrality and rapidity dependence of inclusive jet production in = 5.02 TeV +Pb collisions with the ATLAS detector
No full textMeasurements of reconstructed jets in high-energy proton-nucleus collisions over a wide rapidity and transverse momentum range are a fundamental probe of the partonic structure of nuclei. Inclusive jet production is sensitive to the modification of parton distribution functions in the high-density nuclear environment. In the forward direction and at small pT jets may even explore the transition from a dilute to saturated partonic system. Furthermore, any modification of jet production in p+A collisions has implications for our understanding of the strong suppression seen in central A+A collisions. We present the latest results on inclusive jet production in 31/nb of proton-lead collisions at 5.02 TeV with the ATLAS detector at the LHC. The centrality of p+Pb events is determined by applying the Glauber model to the sum of the transverse energy in the Pb-going forward calorimeter. The jet yields in central and peripheral p+Pb collisions are found to be suppressed and enhanced, respectively, relative to geometric expectations. Furthermore, the modifications at all rapidities are seen to be consistent with a simple function of the total jet energy
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