28,030 research outputs found
Approximate approach of research and assessment of crack resistance of cylindrical housings
Get PDFIn this work, we propose a procedure that allows us to quickly, without involving finite-element packages at the execution stage, evaluate the state of postulated cracks in cylindrical structural elements with internal anticorrosion cladding under pressure and unsteady temperature loading. The procedure contains three components. The first component of the procedure is based on the analytical solution of the unsteady thermal conductivity problem. The second component of the procedure is also analytical relations specifying circumferential and longitudinal stresses in a two-layer cylinder as a function of internal pressure and temperature distribution along the depth of the wall. In the third stage of the procedure, the coefficients of stress intensity along the crack front are determined by the method of influence functions using the known distribution of stresses. To implement this part of the procedure, the influence functions must first be calculated by the finite element method. In this work the example of calculating the functions of influence for longitudinal semi-elliptical cracks of 1/8 wall thickness depth and with the ratio of the principal half-diameters 0.3 and 0.7 is presented. As an example of the implementation of the procedure, comparative calculations were carried out and the elastic-plastic calculation of a cylindrical shell containing longitudinal cracks was given. Stress intensity coefficients along the part of the front located in the base metal were calculated. The results of analytical calculations were conservative until plastic deformations developed in the cladding. At significant plastic strains, the values of the stress intensity coefficients calculated by the proposed procedure, on the contrary, are significantly inferior. This demonstrates once again the fact that calculations in the framework of linear fracture mechanics are not always conservative in relation to calculations in the elastic-plastic formulation. The paper gives an explanation of the reason for the obtained effect
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
AUTHOR BOOK
No full textVytvořil jsem autorskou knihu o čtyřiceti stránkách s ilustracemi a minimem textu. Kniha je černobílá, dominuje v ní tušová kresba štětcem a perem. Kromě té je v knize ale i text, který slouží jako poetické doplnění ilustrací.
Obsah knihy se zaměřuje na úzký kruh přátel a zároveň vypovídá o autorovi jak vybranými motivy, situacemi tak linkou.
Vyznění knihy je spíše pocitové, má zanechat dojem, ne popisně vysvětlovat.ObhájenoI have created author book that has 40 pages with ilustrations and minimum of text. The book is black and white and contains ink drawings. There is also text poetically coresponding with pictures
Využití sociálních médií v B2B prodeji
No full textTato diplomová práce se zabývá tím, jak mohou B2B obchodníci využívat sociální média v prodeji. Na základě systematické rešerše literatury, autor zjistil, že akademici, zkoumající danou problematiku, navrhují další výzkum, a to: v kterých konkrétních krocích se dají využít sociální média v prodeji (Salo, 2017). Autor se na základě toho rozhodl zjistit, jaké sociální sítě, různé technologie a pluginy se dají využít v B2B prodeji - tzv. social sellingu. Social selling se v této práci týká primárně procesu akvizice a okrajově péčí o stávající zákazníky. Autor si vybral kvalitativní průzkum pomocí 10 hloubkových polo-strukturovaných rozhovorů, aby odhalil jak, která sociální média to jsou, tak i motivaci prodejců, proč tato média používat/nepoužívat. Aby autor dodržel správnost vyhodnocení výsledků, data byla analyzována pomocí Tématické analýzy, která v této studii vykrystalizovala 2 hlavní strategické přístupy v social sellingu. Tyto přístupy (tzv. Push a Pull strategie) obsahují praktické příklady a konkrétní aktivity, které mohou prodejci využívat v každodenní praxi. Tyto výsledky jsou prezentovány s důrazem na praktičnost a jednoduchost implementace. Tvoří proto hlavní přínos autorovo výzkumu. V poslední části autor zmiňuje výzvy a manažerská doporučení, které mohou obchodníci využít v každodenním pracovním životě.This diploma thesis focuses on social media usage in B2B sales. Based on the systematic literature review conducted by the author, he has found out that recent researchers (Salo, 2017) suggest further research in the area of how and in which sales phase should various social networking sites, technologies and plugins used. To further fill this research gap, author decided to identify these social media and their usage among B2B salespeople in the so-called social selling process. The social selling process in this thesis applies mainly to acquiring new prospects and tangentially to taking care of existing clients (follow-up step). Author has chosen a qualitative research method via conducting 10 in-depth semi-structured interviews to reveal these instruments as well as motivation of a sales person on why to use social media in the selling process. The collected data was analyzed using Thematic analysis to ensure the right procedure and to identify main themes which crystalized into 2 main strategic approaches in social selling. These approaches (Push and Pull) include practical examples of concrete activities which sales people can use in their daily jobs and are presented with focus on practicality and ease of implementation. These also form the main contribution of author`s research. In the last part, author mentions challenges in social selling and recommended managerial implications for salesforce
Dileme o vsebini in položaju regionalne geografije v sistemu znanosti
Get PDFThe author develops thoughts on needs of regional svnthesis where physical and social elements should be brought into an adequate interdependency.Avtor razvija misel o potrebnosti regionalne sinteze ob upoštevanju naravnih in družbenih elementov v njihovi medsebojni soodvisnosti
AN INNOVATIVE WAY OF DEVELOPMENT OF HIGHER EDUCATION – A PREREQUISITE TO ENHANCE ITS QUALITY
No full textImproving the quality of education needs to move her to an innovative way of development. The paper states that innovation in education – a key condition of its availability, efficient use of resources. Innovations in Education author examines how the introduction of something new in higher education, the implementation of new ideas, new methods. Reviewed state of scientific and technical progress in Ukraine, noting that the volume of scientific and technical work performed by enterprises grows. Emphasizes the role of higher education, which is an integral component of the economy. Systematized indicators characterizing the level of development of higher education in Ukraine. The changes that have occurred and the factors that led to them. Emphasized the importance of implementing the various components of the innovation in the educational process and proved a number of measures for its development. Revealed the importance of financial components to provide the resource base for the transition of the educational sector in the innovation way of development. The need for structural changes in higher education, in training, which has a positive impact on the socio-economic performance of the country and the economic activity of the population. It is emphasized that confirm the activity of higher education transition to an innovative way of development is closely associated with this process in a secondary school. And therefore stresses the need for further computerization and informatization of secondary school and in higher education needs to accelerate the development and implementation of new learning technologies, formation of creative innovation teams and ensure their mobility, financial security model of higher education, including through public-private partnership
Demonetizace v Indii
No full textTato práce pojednává o demonetizaci v Indii. Pro zodpovězení důvodu demonetizace autor provedl výzkum důsledků tohoto jevu obecně, i ve vztahu ke specifickým rysům indické ekonomiky. Závěrečně byla provedena analýza, zda byla demonetizace potřebná pro tuto zemi.The following thesis talks about Demonetization in India. In the search of why was demonetization conducted, the author of the thesis has made research on the consequences of demonetization and further associated it with the specific features of the Indian economy to analyze if the act of demonetization was necessary for the country or not
Low Temperature Physics V. 29, I. 06
No full textLow Temperature Physics -- June 2003
Volume 29, Issue 6, pp. 451-539
Third International Workshop on Low-Temperature Physics in Microgravity Environment (CWS-2002)
Yu. A. Osip'yan and L. P. Mezhov-Deglin
Full Text: PDF (48 kB)
Main fields of study in low-temperature physics and engineering on the Russian segment of the International Space Station
N. A. Anfimov, V. I. Luk'yashchenko, V. V. Suvorov, M. M. Tsimbalyuk, and B. V. Bodin
Full Text: PDF (35 kB)
An overview of the low temperature microgravity physics facility capabilities
J. F. Pensinger, A. P. Croonquist, F. C. Liu, M. E. Larson, and T. C. Chui
Full Text: PDF (230 kB)
Physical research on the effect of microgravity on physical phenomena in cryogenic liquids; a general purpose onboard cryogenic facility for implementing this research on the International Space Station
S. I. Bondarenko, R. V. Gavrylov, V. V. Eremenko, K. V. Rusanov, N. S. Shcherbakova, I. M. Dergunov, A. P. Kryukov, P. V. Korolyov, Yu. Yu. Selyaninova, V. M. Zhukov, V. S. Kharitonov, K. V. Kutsenko, V. I. Deev, and V. A. Shuvalov
Full Text: PDF (60 kB)
Technical integration of low-temperature research on the Russian segment of the ISS and optimization of the experiment packages
S. V. Buskin, V. I. Lukjashchenko, I. Yu. Repin, V. V. Suvorov, V. A. Shuvalov, and Yu. E. Levitskii
Full Text: PDF (31 kB)
Short-range inverse-square law experiment in space
D. M. Strayer, Ho Jung Paik, and M. Vol Moody
Full Text: PDF (395 kB)
Thermal gravity-driven convection of near-critical helium in enclosures
V. I. Polezhaev and E. B. Soboleva
Full Text: PDF (61 kB)
Boiling of He II in a porous structure in microgravity: a model representation
I. M. Dergunov, P. V. Korolev, A. P. Kryukov, and Yu. Yu. Selyaninova
Full Text: PDF (142 kB)
Quantum computing with bits made of electrons on a helium surface
A. J. Dahm
Full Text: PDF (186 kB)
Manipulation of a 4He solid–liquid interface by acoustic radiation pressure
R. Nomura, Y. Suzuki, S. Kimura, Y. Okuda, and S. Burmistov
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Nonlinear second-sound waves in 4He–3He superfluid mixtures
G. V. Kolmakov
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Proximity effect at a He II–He I interface under microgravity
L. Kiknadze and Yu. Mamaladze
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Phonons and rotons of trapped atoms in a gravitational field
D. B. Baranov and V. S. Yarunin
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ESR investigation of hydrogen and deuterium atoms in impurity-helium solids
S. I. Kiselev, V. V. Khmelenko, E. P. Bernard, and D. M. Lee
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On the formation mechanism of impurity–helium solids: evidence for extensive clustering
E. A. Popov, J. Eloranta, J. Ahokas, and H. Kunttu
Full Text: PDF (138 kB)
Transformation of watergel samples in liquid helium
A. M. Kokotin and L. P. Mezhov-Deglin
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EPR spectra and rotation of CH3, CH2D, CHD2, and CD3 radicals in solid H2
Yu. A. Dmitriev and R. A. Zhitnikov
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Quench deposited Kr–H2 and Ar–H2 mixtures: in quest of impurity–hydrogen gels
M. A. Strzhemechny, N. N. Galtsov, and A. I. Prokhvatilov
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Thermal conductivity of solid parahydrogen with methane admixtures
A. I. Krivchikov, O. A. Korolyuk, V. V. Sumarokov, J. Mucha, P. Stachowiak, and A. Jezowski
Full Text: PDF (59 kB)
Vibrational dynamic and thermodynamic characteristics of metal–hydrogen superlattices
S. B. Feodosyev, I. A. Gospodarev, V. I. Grishaev, and E. S. Syrkin
Full Text: PDF (66 kB)
Thermal expansion of Kr–CH4 solid solutions at liquid-helium temperatures
A. N. Aleksandrovskii, V. G. Gavrilko, A. V. Dolbin, V. B. Esel'son, V. G. Manzhelii, and B. G. Udovidchenko
Full Text: PDF (100 kB)Archived web conten
Kanji-Sudokus: Integrating Chinese and Graphics
Get PDFsummary:Článek představuje metodu, jak lze technicky za pomoci METAPOSTu vykreslit sudoku s čínskými glyfy (kandži). Makra nejsou rozsáhlá a jsou v úplné podobě součástí tohoto článku. Na vykreslení sudoku jen s arabskými číslicemi můžete použít balíček sudoku; na generování, vykreslení a řešení sudoku nahlédněte, prosím, na balíček sudokubundle. Oba balíčky jsou dostupné z ctan.org. Sudoku, česky též magický čtverec, je logická hra, kterou vymyslel Howard Garns v roce 1979. Své obliby se dočkala především v Japonsku, ale prakticky se hraje po celém světě. Cílem hry je doplnit chybějící čísla 1 až 9 v předem dané předvyplněné tabulce. K dříve vyplněným číslům je potřeba dopsat další čísla tak, aby platilo, že v každé řadě, v každém sloupci a v každém z devíti čtverců byla použita vždy všechna čísla jedna až devět. Pořadí čísel není důležité. Čísla se nesmí opakovat v žádném sloupci, řádku nebo ve vnitřních malých čtvercích o devíti polích. Kdo by si to rád zkusil, nechť navštíví např. http://profuvsvet.ic.cz/data/sudoku.html nebo http://sudokuonline.cz/. Přehledně o typech sudoku, jejich algoritmech a matematickém pozadí, viz např. Wikipedie [1]. Za zajímavost stojí, že první mistrovství světa v sudoku v roce 2006 vyhrála Češka Jana Tylová z Ústí nad Labem. Turnaj v sudoku můžete absolvovat např. na mezinárodním festivalu Czech Open. Ustavující Guinnessův rekord drží z 23. února 2008 Pavel Jaselský z Vojtovce na Slovensku.summary:The article illustrates the integration of Chinese and METAPOST on a small example. The author draws a Sudoku grid, not with Hindu-Arabic numerals, but with Chinese numerals. This article demonstrates how straightforward the integration of Chinese and METAPOST has become. The source codes are included as small parts in the article commented in detail. You may find the original English version of the article in TUGboat, see http://tug.org/TUGboat/Articles/tb29-2/tb92roegel.pdf
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