Temat: eccentricity - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Comparing Eccentricity-Based Graph Invariants
Autorzy:: Hua, Hongbo
Wang, Hongzhuan
Gutman, Ivan
Tematy:: eccentricity (of vertex)
Zagreb eccentricity index
eccentric distance sum
connective eccentricity index; Pokaż więcej
Wydawca:: Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Powiązania:: https://bibliotekanauki.pl/articles/31348117.pdf Link otwiera się w nowym oknie
Opis:: The first and second Zagreb eccentricity indices (EM₁ and EM₂), the eccentric distance sum (EDS), and the connective eccentricity index (CEI) are all recently conceived eccentricity-based graph invariants, some of which found applications in chemistry. We prove that EDS ≥ EM₁ for any connected graph, whereas EDS > EM₂ for trees. Moreover, in the case of trees, EM₁ ≥ CEI, whereas EM₂ > CEI for trees with at least three vertices. In addition, we compare EDS with EM2, and compare EM₁, EM₂ with CEI for general connected graphs under some restricted conditions.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Analysis and effect of static eccentricity fault on performance indicators of a synchronous reluctance motor
Autorzy:: Idoko, Emmanuel
Umoh, Gideon David
Obe, Pauline Ijeoma
Mama, Benjamin Okwudili
Obe, Emeka Simon
Tematy:: degree of eccentricity
faults
finite element method
inductances
static eccentricity
synchronous reluctance motor
winding function; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Powiązania:: https://bibliotekanauki.pl/articles/27309936.pdf Link otwiera się w nowym oknie
Opis:: Fault diagnosis and condition monitoring of synchronous machines running under load is a key determinant of their lifespan and performance. Faults such as broken rotor bars, bent shafts and bearing issues lead to eccentricity faults. These faults if not monitored may lead to repair, replacement and unforeseen loss of income. Researchers who attempted to investigate this kind of machine stopped at characterizing and deduced ways, types and effects of rotor eccentricity fault on the machine inductances using the winding function method. A modified closed-form analytical model of an eccentric synchronus reluctance motor (SynRM) is developed here taking into cognizance the machine dimensions and winding distribution for the cases of a healthy and unhealthy SynRM. This paper reports the study the SynRM under static rotor eccentricity using the developed analytical model and firming up the model with finite element method (FEM) solutions. These methods are beneficial as they investigated and presented the influence of the degrees of static eccentricity on the machine performance indicators such as speed, torque and the stator current and assess the extent to which the machine performance will deteriorate when running with and without load. The results show that static eccentricity significantly affects the machine’s performance as the degree of eccentricity increases.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Impact of the sleeve thickness on the armature eccentricity in a solenoid valve
Autorzy:: Goraj, R.
Tematy:: solenoid valve
eccentricity
armature
sleeve; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/141681.pdf Link otwiera się w nowym oknie
Opis:: Most studies on solenoid valves (SVs) assumed that the armature is concentrically positioned in the sleeve. Under this assumption the transversal component of the magnetic force is equal zero. The article presents an analytical calculation model for the estimation of the armature eccentricity. Using this model the eccentricity was calculated as a function of the sleeve thickness and the hydraulic clearance between the armature and the sleeve. After finding the eccentricity also the permeance of the radial air gap was calculated. This permeance has a direct influence on the drop of the magnetomotive force in the magnetic circuit and finally influences also the axial component of the magnetic force. In the article a calculation of both transversal and axial components of the magnetic force was carried out and presented in the appendix to the article.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Political Extravaganza As A Dramatic Genre (On The Material of Bernard Shaw’s Plays)
Политическая экстраваганца как драматический жанр (на материале пьес Бернарда Шоу)
Autorzy:: Sokolyansky, Mark
Tematy:: extravaganza
Bernard Shaw
eccentricity
paradox
satire; Pokaż więcej
Wydawca:: Łódzkie Towarzystwo Naukowe
Powiązania:: https://bibliotekanauki.pl/articles/2097171.pdf Link otwiera się w nowym oknie
Opis:: The paper deals with the semantic and structural specificity of political extravaganza as a genre of dramaturgy. The history of this literary and dramatic kind and also its scantily explored genetic connection with the dramatic pamphlet, which arose in the 18th-century English theatre, are briefly retraced. Its artistic peculiarity is investigated by using material from several plays of Bernard Shaw, which were written from the 1920s–1930s (The Apple Cart, Too True to be Good, Geneva, On the Rocks). The genre definition was used by the playwright for the first time as a subtitle to the play The Apple Cart, the first performance of it took place in Warsaw in 1929; the extravaganza was staged by Arnold Szyfman at the “Teatr Polski”. Special attention is paid in the article to such features of political extravaganza, as paradox, the grotesque and eccentricity, which become apparent at some levels of dramatic text: in the linguo-stylistic originality of the tirades and dialogues, as well as in the extensive stage directions and sometimes in the titles, in the characters of personages, in construction of the plots and in the composition of the plays. Of primary interest is also the eccentric treatment of the artistic time in the plays based on the historical personalities or episodes, and in the introduction of fantastical elements to the dramatic action. The essential role of the concentrated eccentricity in the sharpening and the emphasized topicalization of political satire is also discussed in the paper.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: On subgraphs with prescribed eccentricities
Autorzy:: Dankelmann, Peter
DeVilbiss, Matthew
Erwin, David J.
Guest, Kelly
Matzke, Ryan
Tematy:: distance
eccentricity
subgraph
tree; Pokaż więcej
Wydawca:: Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Powiązania:: https://bibliotekanauki.pl/articles/59898577.pdf Link otwiera się w nowym oknie
Opis:: A well-known result by Hedetniemi states that for every graph $G$ there is a graph $H$ whose center is $G$. We extend this result by showing under which conditions there exists, for a given graph $G$ in which each vertex $v$ has an integer label $\mathcal{l}(v)$, a graph $H$ containing $G$ as an induced subgraph such that the eccentricity, in $H,$ of every vertex $v$ of $G$ equals $\mathcal{l}(v)$. Such a labelled graph $G$ is said to be eccentric, and strictly eccentric if there exists such a graph $H$ such that no vertex of $H-G$ has the same eccentricity in $H$ as any vertex of $G$. We find necessary and sufficient conditions for a labelled graph to be eccentric and for a forest to be eccentric or strictly eccentric in a tree.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Effective width rule in the analysis of footing on reinforced sand slope
Autorzy:: Abdi, Abdelmadjid
Abbeche, Khelifa
Athmania, Djamel
Bouassida, Mounir
Tematy:: bearing capacity
eccentricity
footing
geogrid
model test
slope; Pokaż więcej
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:: https://bibliotekanauki.pl/articles/178217.pdf Link otwiera się w nowym oknie
Opis:: This paper presents the results obtained from an experimental programme and numerical investigations conducted on model tests of strip footing resting on reinforced and unreinforced sand slopes. The study focused on the determination of ultimate bearing capacity of strip footing subjected to eccentric load located either towards or opposite to the slope facing. Strip footing models were tested under different eccentricities of vertical load. The obtained results from tests conducted on unreinforced sand slope showed that the increase in eccentricity of applied load towards the slope facing decreases the ultimate bearing capacity of footing. Predictions of the ultimate bearing capacity obtained by the effective width rule are in good agreement with those proposed from the consideration of total width of footing subjected to eccentric load. The ultimate bearing capacity of an eccentrically loaded footing on a reinforced sand slope can be derived from that of axially loaded footing resting on horizontal sand ground when adopting the effective width rule and the coefficient of reduction due to the slope. When increasing the distance between the footing border to the slope crest, for unreinforced and reinforced ground slope by geogrids, the ultimate bearing capacity of footing is no more affected by the slope ground.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Eccentricity of Networks with Structural Constraints
Autorzy:: Krnc, Matjaž
Sereni, Jean-Sébastien
Škrekovski, Riste
Yilma, Zelealem B.
Tematy:: eccentricity
network
bipartite graph
complex network
maximum degree; Pokaż więcej
Wydawca:: Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Powiązania:: https://bibliotekanauki.pl/articles/31348091.pdf Link otwiera się w nowym oknie
Opis:: The eccentricity of a node v in a network is the maximum distance from v to any other node. In social networks, the reciprocal of eccentricity is used as a measure of the importance of a node within a network. The associated centralization measure then calculates the degree to which a network is dominated by a particular node. In this work, we determine the maximum value of eccentricity centralization as well as the most centralized networks for various classes of networks including the families of bipartite networks (two-mode data) with given partition sizes and tree networks with fixed number of nodes and fixed maximum degree. To this end, we introduce and study a new way of enumerating the nodes of a tree which might be of independent interest.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Political anthropology of Helmuth Plessner
Antropologia polityczna Helmutha Plessnera
Autorzy:: Ciszewski, Wojciech
Opis:: W artykule Autor analizuje koncepcję antropologii politycznej Helmutha Plessnera, niemieckiego filozofa oraz socjologa, jednego z najwybitniejszych przedstawicieli współczesnej antropologii filozoficznej. W pierwszej części artykułu Autor przedstawia sposób, w jaki Plessner pojmuje kategorię natury ludzkiej. Autor skupia się przede wszystkim na głównych elementach ludzkiej intencjonalności. Szczególny akcent jest położony na ideę ekscentryczności, która stanowi punkt wyjścia filozofii politycznej Plessnera. W konkluji artykułu Autor wskazuje na znaczenie oraz oryginalność koncepcji niemieckiego filozofa.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 9.

Tytuł:: Entre la sobriété et l’excentricité : l’élégant dilemme du dandy
Between Sobriety and Eccentricity: The Elegant Dilemma of Dandy
Autorzy:: Kociubińska, Edyta
Tematy:: dandyzm; elegancja; prowokacja; ekscentryczność
dandyism; elegance; provocation; eccentricity; Pokaż więcej
Wydawca:: Katolicki Uniwersytet Lubelski Jana Pawła II. Towarzystwo Naukowe KUL
Powiązania:: https://bibliotekanauki.pl/articles/1806692.pdf Link otwiera się w nowym oknie
Opis:: Między prostotą a ekscentrycznością: Elegancki dylemat dandysa Dandyzm nie ogranicza się wyłącznie do hołdowania oryginalności i wytworności ubioru. W istocie doskonałość stroju polega na zupełnej prostocie, która zresztą jest najlepszym sposobem wyróżniania się. Niniejszy artykuł pokazuje, że wyrafinowana elegancja jest wyznacznikiem arystokratycznej wyższości ducha, sposobem walki z wszechobecną użytecznością i uniformizacją. Dzięki wyszukanemu strojowi dandys nie jest człowiekiem anonimowym; to buntownik, który balansując na granicy konwenansów, podejmuje nieustanne ryzyko, zamieniając swą egzystencję w grę sprzeczności. Entre la sobriété et l’excentricité : l’élégant dilemme du dandy Derrière l’ostentation et la frivolité apparentes, il faut percevoir l’habit du dandy en tant que signe de sa lutte contre l’égalité et l’utilité des gens. Grâce au vêtement recherché il n’est plus un individu anonyme, il se montre à autrui en tant qu’un homme révolté, en dehors du commun. Ainsi, nous tenterons de montrer qu’il existe toute une philosophie de cet art de bien s’habiller, qu’on ne peut pas enfermer le dandy dans un album avec des gravures de mode, car il mérite bien qu’on le mette dans le rang des artistes qui exploitent la mode à leurs fins, à savoir la provocation et le jeu avec les règles en vigueur sans s’y asservir.
Contrary to popular belief, dandyism is not an immoderate delight in elegance. In fact, for the perfect dandy the excellence of costume is only a sign of aristocratic superiority of mind. The present paper aims to show the subtle manipulations, by means of which the dandy provokes society and the salon public, nonchalantly merging sublime manners and outrageous impertinence. Dandy, therefore, is not an ordinary man following fashion, but a rebel who don’t hesitate to play with rules, who takes a permanent risk, turning his existence in the game contradictions.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Dendrochronological record of soil creep and landslide activity – the comparison of tree-ring eccentricity and compression wood (examples from the Kamienne Mts., Poland)
Autorzy:: Sitko, Katarzyna
Wistuba, Małgorzata
Malik, Ireneusz
Krąpiec, Marek
Yu, Ruide
Zhang, Haiyan
Tematy:: dendrochronology
landslide
soil creep
compression wood
tree-ring eccentricity; Pokaż więcej
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Powiązania:: https://bibliotekanauki.pl/articles/2124701.pdf Link otwiera się w nowym oknie
Opis:: Forested mountain slopes can be simultaneously affected by soil creep and landslide activity, both of which cause the tilting of tree stems, with the result that their dendrochronological record of tree-ring eccentricity and compression wood is potentially similar. There is a need to identify similarities and differences in these records and thus our research aimed to compare patterns of eccentricity and compression wood developed by trees under the impact of soil creep and landslides. We sampled trees growing on a landslide and creeping slopes in the Kamienne Mts., with 21 Norway spruce trees were sampled on each site. We found several main differences between the dendrochronological record of landslide activity and soil creep. On the landslide we found larger number of dendrochronological events, stronger and more variable eccentricity and a similar number of upslope and downslope events. On creeping slopes, upslope eccentricity events predominate, and the number of eccentricity events dated in all trees increases in time. We also compared the utility of eccentricity and compression wood for dating mass movements. They differ in their sensitivity to stem tilting. Thus, in analyses of landslide activity and soil creep activity, it is recommended to include both wood anatomy features.
Dostawca treści:: Biblioteka Nauki

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