Academic literature on the topic 'Wiederaufbau, G.m.b.H'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Wiederaufbau, G.m.b.H.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Wiederaufbau, G.m.b.H"

1

Wenni, Mariza. "BILANGAN KROMATIK LOKASI DARI GRAF P m P n ; K m P n ; DAN K , m K n." Jurnal Matematika UNAND 2, no. 1 (March 10, 2013): 14. http://dx.doi.org/10.25077/jmu.2.1.14-22.2013.

Full text
Abstract:
Let G and H be two connected graphs. Let c be a vertex k-coloring of aconnected graph G and let = fCg be a partition of V (G) into the resultingcolor classes. For each v 2 V (G), the color code of v is dened to be k-vector: c1; C2; :::; Ck(v) =(d(v; C1); d(v; C2); :::; d(v; Ck)), where d(v; Ci) = minfd(v; x) j x 2 Cg, 1 i k. Ifdistinct vertices have distinct color codes with respect to , then c is called a locatingcoloring of G. The locating chromatic number of G is the smallest natural number ksuch that there are locating coloring with k colors in G. The Cartesian product of graphG and H is a graph with vertex set V (G) V (H), where two vertices (a; b) and (a)are adjacent whenever a = a0and bb02 E(H), or aa0i2 E(G) and b = b, denotedby GH. In this paper, we will study about the locating chromatic numbers of thecartesian product of two paths, the cartesian product of paths and complete graphs, andthe cartesian product of two complete graphs.
APA, Harvard, Vancouver, ISO, and other styles
2

Isono, Yusuke. "ON FUNDAMENTAL GROUPS OF TENSOR PRODUCT FACTORS." Journal of the Institute of Mathematics of Jussieu 19, no. 4 (August 2, 2018): 1121–39. http://dx.doi.org/10.1017/s1474748018000336.

Full text
Abstract:
Let $M$ be a $\text{II}_{1}$ factor and let ${\mathcal{F}}(M)$ denote the fundamental group of $M$. In this article, we study the following property of $M$: for any $\text{II}_{1}$ factor $B$, we have ${\mathcal{F}}(M\,\overline{\otimes }\,B)={\mathcal{F}}(M){\mathcal{F}}(B)$. We prove that for any subgroup $G\leqslant \mathbb{R}_{+}^{\ast }$ which is realized as a fundamental group of a $\text{II}_{1}$ factor, there exists a $\text{II}_{1}$ factor $M$ which satisfies this property and whose fundamental group is $G$. Using this, we deduce that if $G,H\leqslant \mathbb{R}_{+}^{\ast }$ are realized as fundamental groups of $\text{II}_{1}$ factors, then so are groups $G\cdot H$ and $G\cap H$.
APA, Harvard, Vancouver, ISO, and other styles
3

GHOSH, NIRUPAM, and VASUDEVARAO ALLU. "ON SOME SUBCLASSES OF HARMONIC MAPPINGS." Bulletin of the Australian Mathematical Society 101, no. 1 (July 10, 2019): 130–40. http://dx.doi.org/10.1017/s0004972719000698.

Full text
Abstract:
Let ${\mathcal{P}}_{{\mathcal{H}}}^{0}(M)$ denote the class of normalised harmonic mappings $f=h+\overline{g}$ in the unit disk $\mathbb{D}$ satisfying $\text{Re}\,(zh^{\prime \prime }(z))>-M+|zg^{\prime \prime }(z)|$, where $h^{\prime }(0)-1=0=g^{\prime }(0)$ and $M>0$. Let ${\mathcal{B}}_{{\mathcal{H}}}^{0}(M)$ denote the class of sense-preserving harmonic mappings $f=h+\overline{g}$ in the unit disk $\mathbb{D}$ satisfying $|zh^{\prime \prime }(z)|\leq M-|zg^{\prime \prime }(z)|$, where $M>0$. We discuss the coefficient bound problem, the growth theorem for functions in the class ${\mathcal{P}}_{{\mathcal{H}}}^{0}(M)$ and a two-point distortion property for functions in the class ${\mathcal{B}}_{{\mathcal{H}}}^{0}(M)$.
APA, Harvard, Vancouver, ISO, and other styles
4

Kearns, Fiona, Luke Warrensford, Stefan Boresch, and H. Woodcock. "The Good, the Bad, and the Ugly: “HiPen”, a New Dataset for Validating (S)QM/MM Free Energy Simulations." Molecules 24, no. 4 (February 14, 2019): 681. http://dx.doi.org/10.3390/molecules24040681.

Full text
Abstract:
Indirect (S)QM/MM free energy simulations (FES) are vital to efficiently incorporating sufficient sampling and accurate (QM) energetic evaluations when estimating free energies of practical/experimental interest. Connecting between levels of theory, i.e., calculating Δ A l o w → h i g h , remains to be the most challenging step within an indirect FES protocol. To improve calculations of Δ A l o w → h i g h , we must: (1) compare the performance of all FES methods currently available; and (2) compile and maintain datasets of Δ A l o w → h i g h calculated for a wide-variety of molecules so that future practitioners may replicate or improve upon the current state-of-the-art. Towards these two aims, we introduce a new dataset, “HiPen”, which tabulates Δ A g a s M M → 3 o b (the free energy associated with switching from an M M to an S C C − D F T B molecular description using the 3ob parameter set in gas phase), calculated for 22 drug-like small molecules. We compare the calculation of this value using free energy perturbation, Bennett’s acceptance ratio, Jarzynski’s equation, and Crooks’ equation. We also predict the reliability of each calculated Δ A g a s M M → 3 o b by evaluating several convergence criteria including sample size hysteresis, overlap statistics, and bias metric ( Π ). Within the total dataset, three distinct categories of molecules emerge: the “good” molecules, for which we can obtain converged Δ A g a s M M → 3 o b using Jarzynski’s equation; “bad” molecules which require Crooks’ equation to obtain a converged Δ A g a s M M → 3 o b ; and “ugly” molecules for which we cannot obtain reliably converged Δ A g a s M M → 3 o b with either Jarzynski’s or Crooks’ equations. We discuss, in depth, results from several example molecules in each of these categories and describe how dihedral discrepancies between levels of theory cause convergence failures even for these gas phase free energy simulations.
APA, Harvard, Vancouver, ISO, and other styles
5

Jakovac, Marko, and Iztok Peterin. "On the b-chromatic number of some graph products." Studia Scientiarum Mathematicarum Hungarica 49, no. 2 (June 1, 2012): 156–69. http://dx.doi.org/10.1556/sscmath.49.2012.2.1194.

Full text
Abstract:
A b-coloring is a proper vertex coloring of a graph such that each color class contains a vertex that has a neighbor in all other color classes and the b-chromatic number is the largest integer φ(G) for which a graph has a b-coloring with φ(G) colors. We determine some upper and lower bounds for the b-chromatic number of the strong product G ⊠ H, the lexicographic product G[H] and the direct product G × H and give some exact values for products of paths, cycles, stars, and complete bipartite graphs. We also show that the b-chromatic number of Pn ⊠ H, Cn ⊠ H, Pn[H], Cn[H], and Km,n[H] can be determined for an arbitrary graph H, when integers m and n are large enough.
APA, Harvard, Vancouver, ISO, and other styles
6

Aldwaik, Suzana, Martin Edjvet, and Arye Juhász. "Asphericity of positive free product length 4 relative group presentations." Forum Mathematicum 31, no. 1 (January 1, 2019): 49–68. http://dx.doi.org/10.1515/forum-2017-0141.

Full text
Abstract:
Abstract Excluding some exceptional cases, we determine the asphericity of the relative presentation {\mathcal{P}=\langle G,x\mid ax^{m}bx^{n}\rangle} , where {a,b\in G\setminus\{1\}} and {1\leq m\leq n} . If {H=\langle a,b\rangle\leq G} , the exceptional cases occur when {a=b^{2}} or when H is isomorphic to {C_{6}} .
APA, Harvard, Vancouver, ISO, and other styles
7

Sahab, Salem M. A. "Bounded measurable simultaneous monotone approximation." Bulletin of the Australian Mathematical Society 40, no. 1 (August 1989): 37–48. http://dx.doi.org/10.1017/s0004972700003476.

Full text
Abstract:
Let X = [a, b] be a closed bounded real interval. Let B be the closed linear space of all bounded real valued functions defined on X, and let M ⊆ B be the closed convex cone consisting of all monotone non-decreasing functions on X. For f, g ∈ B and a fixed positive w ∈ B, we define the so-called best L∞-simultaneous approximant of f and g to be an element h* ∈ M satisfyingfor all h ∈ M, whereWe establish a duality result involving the value of d in terms of f, g and w only.If in addition f, g and w are continuous, then some characterisation results are obtained.
APA, Harvard, Vancouver, ISO, and other styles
8

Rehman, Nadeem ur. "On certain equations in semiprime rings and standard operator algebras." Advances in Pure and Applied Mathematics 10, no. 3 (July 1, 2019): 241–50. http://dx.doi.org/10.1515/apam-2018-0033.

Full text
Abstract:
Abstract The purpose of this paper is to prove the following result which is related to a classical result of Chernoff. Let X be a real or complex Banach space, let {\mathcal{L}(X)} be the algebra of all bounded linear operators of X into itself and let {\mathcal{A}(X)\subset\mathcal{L}(X)} be a standard operator algebra. Suppose there exist linear mappings {\mathcal{H},\mathcal{G}\colon\mathcal{A(X)}\to\mathcal{L(X)}} satisfying the relations \displaystyle\mathcal{H}(\mathcal{A}^{m+n})=\mathcal{H}(\mathcal{A}^{m})% \mathcal{A}^{n}+\mathcal{A}^{m}\mathcal{G}(\mathcal{A}^{n}), \displaystyle\mathcal{G}(\mathcal{A}^{m+n})=\mathcal{G}(\mathcal{A}^{m})% \mathcal{A}^{n}+\mathcal{A}^{m}\mathcal{H}(\mathcal{A}^{n}) for all {\mathcal{A}\in\mathcal{A(X)}} and some fixed integers {m,n\geq 1} . Then there exists {\mathcal{B}\in\mathcal{L(X)}} , such that {\mathcal{H(A)}=\mathcal{AB}-\mathcal{BA}} for all {\mathcal{A}\in\mathcal{F(X)}} , where {\mathcal{F(X)}} denotes the ideal of all finite rank operators in {\mathcal{L}(X)} , and {\mathcal{H}(\mathcal{A}^{m})=\mathcal{A}^{m}\mathcal{B}-\mathcal{B}\mathcal{A% }^{m}} for all {\mathcal{A}\in\mathcal{A(X)}} .
APA, Harvard, Vancouver, ISO, and other styles
9

Roman’kov, Vitaly. "Embedding theorems for solvable groups." Proceedings of the American Mathematical Society 149, no. 10 (July 28, 2021): 4133–43. http://dx.doi.org/10.1090/proc/15562.

Full text
Abstract:
In this paper, we prove a series of results on group embeddings in groups with a small number of generators. We show that each finitely generated group G G lying in a variety M {\mathcal M} can be embedded in a 4 4 -generated group H ∈ M A H \in {\mathcal M}{\mathcal A} ( A {\mathcal A} means the variety of abelian groups). If G G is a finite group, then H H can also be found as a finite group. It follows, that any finitely generated (finite) solvable group G G of the derived length l l can be embedded in a 4 4 -generated (finite) solvable group H H of length l + 1 l+1 . Thus, we answer the question of V. H. Mikaelian and A. Yu. Olshanskii. It is also shown that any countable group G ∈ M G\in {\mathcal M} , such that the abelianization G a b G_{ab} is a free abelian group, is embeddable in a 2 2 -generated group H ∈ M A H\in {\mathcal M}{\mathcal A} .
APA, Harvard, Vancouver, ISO, and other styles
10

Pałka, Paweł. "Obowiązek rezydencji prałatów i kanoników katedralnej kapituły chełmskiej w Krasnymstawie." Prawo Kanoniczne 28, no. 3-4 (December 10, 1985): 223–36. http://dx.doi.org/10.21697/pk.1985.28.3-4.07.

Full text
Abstract:
T h e q u e stio n show ed in a T itle of th is m o n o g rap h re g a rd th eC h a p te r c o n stitu te d in C hełm in v irtu e of F o u n d a tio n A ct of th eK in g W ład y sław Jag iełło fro m 1429, a n d tram sfered in 1490 to K ra ­sn y staw . F o r th e en d o v em e n t of thfe C h a p ter com posed in itia l fro m2 p re la te s a n d 10 canons d em an d e d th e K ing, th a t a ll m em b ers oft-he C h ap te r sh o u ld resid e by th e C a th e d ra l to k eep a sp len d o r ofG od’s C u lt a n d in o rd e r th a t th ey should say p re y e rs fo r th e fo u n d er,h is fam ily, th e deceased w ifes a n d fo r a p ro sp e rity of K ingdom .S im ila r resid en ce d em an d e d also T re n t’s C ouncil a n d C h a p te r’s C h a rte rs a p p ro v ed b y B ishop W ojciech Sobi-ejuski fro m S taro izrzeb iec in 1572. C ause a pooor endow m ent of th e C haiptar th e p ré la ts a n d th ecanons alm o st since a b eg in n in g assu m ed o th e r P a s to ra l’s b eneficesin a D iocese, it w as la ck of th e fu n d s a d e q u a te fo r all m em b ers ofa C h a p ter (in itial 12, a n d la te r 19) fo r su b sisten ce b esid e th e C ath e d ra l, chiefly th a t in som e y e ars th e e states of C h a p te r w e re dev a sta te d b y T a ta r’s invasions.G oing th ro u g h th e y ro u n d of d u ties th e B ishops w e re w a tc h in gab o u t th e fu lfilm e n t th e ir o b lig atio n of R esidence by p ré la ts an dcanons, a n d th ey w a tc h in g also th a t G od’s cu lt sh o u ld be rig h tlyp erfo rm ed , a t le a s t successively b y a p a rt of th e m em b ers of a C h ap ­te r. I t w as se ttle d a cu sto m co n cern in g th e p e rfo rm a n ce o f a C ulta n d th e fu lfilm e n t of d u ties re la te d to, in a fa rm of ro ta tio n design a te d by a C h ap ter.I t w e re w eek ly ro ta tio n , a n d o ften m o n th ly, com posed by tw o p ré ­la ts or canons. S om etim e o n ly th e y w e re re p la ce d b y h o n o ra ry canons. A lso th is m a n n e r of resid en ce w aist ev e ry tim e co n serv e v erye x actly , w h a t w as show ed in th e reco rd s of C h a p te r’s sessions a n din R e fo rm atio n al D ecrees issu ed b y B ishops a fte r th e acco m p lish m ­en ts of C a th e d ra l v isitatio n s.I t w as in a p rin c ip le d u rin g a ll tim e of th is C h a p te r ex istatio n ,w h ich w as ab ro g a te d to g e th e r w ith th e ab ro g a tio n o f C helm ’s diocese by a P o p e P iu s V II w ith a B u lla Q u em a d m o d u m R o m a n o ru mP o n tific u m fro m O ct. 9, 1805, p u t in to effect in 18C7, sim u ltan eo u slyto a c rea tio n of L u b lin ’s diocese a n d it C a th e d ra l C h ap ter.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Wiederaufbau, G.m.b.H"

1

Younis, Vincent, and Arnautovic Denis. "Att vara välkomen men ändå inte : “Povertyisthemotherofcrime”/MarcusAurelius." Thesis, Mälardalens högskola, Akademin för hälsa, vård och välfärd, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-38412.

Full text
Abstract:
Studien undersöker invånare och verksammas upplevelser av ett, enligt en rapport frånunderrättelseenheten, utsatt bostadsområde i Västerås. För att besvara frågeställningen har vigenomfört 14 intervjuer varav 5 var semistrukturerade och resterande var ostrukturerade. Vihar även genomfört 6 observationer, där samtliga var icke deltagande observationer. Dåmålsättningen var att undersöka så förutsättningslöst som möjligt har vi använt oss av BarneyGlasers variant av grundad teori som metodologiskt angreppssätt. Tidigare forskning som vibelyser är delade i tre teman: Segregation, familjestrukturer och sysselsättning. En teorisom är grundad i data presenteras i resultatdelen och beskriver det som sker i Bäckby.Studiens teoretiska referensramar är Erving Goffmans teori om stigma, Howard. S. Beckersteori om avvikande samt Giorgio Agambens teori om undantag och belägring som fungerarsom en komplettering till förståelsen av hur det är i ett utsatt bostadsområde. Slutsatsernavisar att det är en handfull ungdomar som står för oron som sker i Bäckby och dess handlingarmöjliggörs på grund av misslyckade strukturella åtgärder. De förhållanden vi har funnitavgörande för trygghets upplevelse i Bäckby är inte endast att ungdomar behöversysselsättning, utan det behövs även en spridning av människor med utländsk bakgrund blandetniska svenskar och förebyggande åtgärder från externa aktörer.
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Wiederaufbau, G.m.b.H"

1

Seguin, Daniel. Que faire de l'extrême-droite?: G.-M. Benamou, A. Bercoff, H. de Charette, J.-M. Domenach, J.-C. Gaudin, J.E. Hallier, M. Halter, J.-F. Kahn, S. Klarsfeld, J. Lecanuet, C. Malhuret, P. Méhaignerie, M. Noir, P. Sollers, G. Sorman, B. Stasi. [Paris]: Editions républicaines, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Rights, European Court of Human. Affaires/Cases of A-Macaluso, B-Manunza, c-Gilberti, D-Nonnis, E-Trotto, F-Cattivera, G-Seri, H-Gori, I-Casadio, J-Testa, K-Covitti, L-Zonetti, M-Simonetti, N-Dal Sasso: Italie/v. Italy : arrêts du 3 Décembre 1991/judgments of 3 December 1991. Strasbourg: Greffe de la Cour, Conseil de l'Europe, 1992.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Nominations before the Senate Armed Services Committee, second session, 111th Congress: Hearings before the Committee on Armed Services, United States Senate, One Hundred Eleventh Congress, second session, on nominations of Elizabeth A. McGrath; Michael J. McCord; Sharon E. Burke; Solomon B. Watson; Katherine G. Hammack; Vadm. James A. Winnefeld, Jr., USN; Ltg. Keith B. Alexander, USA; Gen. Raymond T. Odierno, USA; Ltg. Lloyd J. Austin III, USA; Gen. David H. Petraeus, USA; Gen. James N. Mattis, USMC; Jonathan Woodson, M.D.; Neile L. Miller; Anne M. Harrington; Gen. James F. Amos, USMC; Gen. Claude R. Kehler, USAF; and Gen. Carter F. Ham, USA; March 23; April 15; June 24, 29; July 27; August 3; September 21; November 18, 2010. Washington: U.S. G.P.O., 2011.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Nominations before the Senate Armed Services Committee, first session, 112th Congress: Hearings before the Committee on Armed Services, United States Senate, One Hundred Twelfth Congress, first session, on nominations of Michael G. Vickers; Dr. Jo Ann Rooney; Gen. Martin E. Dempsey, USA; Hon. Leon E. Panetta; Gen. James D. Thurman, USA; Vadm. William H. McRaven, USN; Ltgen. John R. Allen, USMC; Madelyn R. Creedon; Alan F. Estevez; Adm. James A. Winnefeld, Jr., USN; Gen. Raymond T. Odierno, USA; Gen. William M. Fraser III, USAF; Gen. Martin E. Dempsey, USA; Adm. Jonathan W. Greenert, USN; Ltg. Charles H. Jacoby, Jr., USA; Hon. Ashton B. Carter; Michael A. Sheehan; Mark W. Lippert; Brad R. Carson; and Kevin A. Ohlson; February 15; March 3; June 9, 28; July 19, 21, 26, 28; September 13; November 17, 2011. Washington: U.S. G.P.O., 2012.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

John Deere: Series A, B, G, H, Models D, M. Primedia Business Directories & Books, 1989.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Sperry, Bobby. Bеgіnnеr'ѕ Guіdе to dеhуdrаtіng Fооd: Dеhуdrаtоr Mасhіnе Tips for Fruit lеаthеr, Dehydrated Vеgеtаblеѕ аnd More, Plus Inѕtruсtіоnѕ. Independently Published, 2020.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

100 most Destructive Natural Disasters. Scholastic paperback nonfiction, 2014.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

William, Watts. Cоnurеѕ : Cоmрlеtе Bеgіnnеr'ѕ Guіdе: Hіѕtоrу, Cаrе and Training Guіdе Tо Rаіѕіng a Hеаlthу Conure. Independently Published, 2020.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Zylinderlaufbahn, Kolben, Pleuel. VDI Verlag, 2018. http://dx.doi.org/10.51202/9783181023174.

Full text
Abstract:
Inhalt Plenarvorträge Antriebstrangkonzepte für Nutzfahrzeuge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 B. Nielsen, Daimler AG, Stuttgart Tribologie motorischer Spritzschichten unter dem Einfluss regenerativer Kraftstoffe . . . . . . . 7 M. Scherge, H.-J. Winkler, R. Böttcher, M. Dienwiebel, Fraunhofer IWM MikroTribologie Centrum, Karlsruhe Tribologische Systeme Anforderungen an moderne Tribosysteme in Verbrennungsmotoren . . . . . . . . . . . . . . . . . 17 O. Botz, ROWE MINERALÖLWERK GMBH, Worms Untersuchung von Ölverbrauch und Verschleiß bei DEUTZ-Motoren . . . . . . . . . . . . . . . . . .23 T. Hoen, T. Ortjohann, DEUTZ AG, Köln Poster Session Formhonen light – Funktion und Fertigungstechnik . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37 G. Flores, A. Wiens, Gehring Technologies GmbH, Ostfildern Herstellung und Prüfung von laserstrukturierten Haftreibungsflächen . . . . . . . . . . . . . . . .45 T. Machleidt, Gesellschaft für ...
APA, Harvard, Vancouver, ISO, and other styles
10

Kelly, Phil. Defending Classical Geopolitics. Oxford University Press, 2017. http://dx.doi.org/10.1093/acrefore/9780190228637.013.279.

Full text
Abstract:
Three successive parts are presented within this article, all intended to raise the visibility and show the utility of classical geopolitics as a deserving and separate international-relations model: (a) a common traditional definition, (b) relevant theories that correspond to that definition, and (c) applications of certain theories that will delve at some depth into three case studies (the Ukrainian shatterbelt, contemporary Turkish geopolitics, and a North American heartland).The placement of states, regions, and resources, as affecting international relations and foreign policies, defines classical geopolitics. This definition emphasizes the application of spatially composed unbiased theories that should bring insight into foreign-affairs events and policies. Specifically, a “model” contains theories that correspond to its description. A “theory” is a simple sentence of probability, with “A” happening to likely affect “B.” Importantly, models are passive; they merely hold theories. In contrast, theories possess their own titles and perform actively when taken from such models.Various methodological challenges are presented: (a) combining concepts with theories, (b) estimating probability for testing theories, (c) claiming the “scientific,” (d) accounting for determinism, (e) revealing a dynamic environment for geopolitics, (f) separating realism from geopolitics, and (g) drawing classical geopolitics away from the critical. Certain theories that are placed within the geopolitical model are examined next: (a) heartlands and rimlands, (b) land and sea power, (c) choke points and maritime lines of communication, (d) offshore balancing, (e) the Monroe doctrine, (f) balances of power, (g) checkerboards, (h) shatterbelts, (i) pan-regions, (j) influence spheres, (k) dependency, (l) buffer states, (m) organic borders, (n) imperial thesis, (o) borders/wars, (p) contagion, (q) irredentism, (r) demography, (s) fluvial laws, (t) petro-politics, and (u) catastrophic events in nature. Additional theories apply elsewhere in the article as well.Of the three case studies, the Ukrainian shatterbelt represents the sole contemporary geopolitical configuration of this type, a regional conflict coupling with a strategic rivalry. Here, partisans of the civil war between the eastern and the western sectors of the country have joined with the Russians against the Europeans and Americans, respectively. Next, Turkey’s pivotal location has afforded it both advantages and disadvantages, a topic discussed at some length earlier in the article. Its “zero-problems” strategy of seeking positive relations with neighbors has now been forced to change tactics, reflective of new forces within and beyond the country. Finally, a North American heartland compares nicely to Halford Mackinder’s earlier Eurasia heartland thesis, with the American perhaps proving more stable, wealthy, and enduring, based in large part on its stronger geopolitical features.
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Wiederaufbau, G.m.b.H"

1

Queiroz, Kevin de, Philip D. Cantino, and Jacques A. Gauthier. "Phragmoplastophyta G. Lecointre and H. Le Guyader 2006: 158 [J. D. Hall, R. M. McCourt, C. F. Delwiche, B. D. Mishler and K. G. Karol], converted clade name." In Phylonyms, 195–98. Boca Raton : CRC Press, [2019]: CRC Press, 2020. http://dx.doi.org/10.1201/9780429446276-45.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

"Alternatives to Increase the Sustainability of Sugarcane Production in Brazil Under High Intensive Mechanization H. C. J. Franco,S. G. Q. Castro,G. M. Sanches, O. T. Kölln,R. O. Bordonal,B. M. M. N. Borges and C. D. Borges." In Sustainable Sugarcane Production, 371–406. Apple Academic Press, 2018. http://dx.doi.org/10.1201/9781351047760-24.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Schweitzer, George K., and Lester L. Pesterfield. "E–pH Diagrams." In The Aqueous Chemistry of the Elements. Oxford University Press, 2010. http://dx.doi.org/10.1093/oso/9780195393354.003.0003.

Full text
Abstract:
This volume is intended to employ E–pH diagrams to describe the inorganic solution chemistry of the chemical elements. Such diagrams are very useful in numerous fields of investigation, including electrochemistry, analytical chemistry, inorganic chemistry, geochemistry, environmental chemistry, corrosion chemistry, hydrometallurgy, water chemistry, agricultural chemistry, toxicology, biochemistry, chemical engineering, materials science, health physics, and nutrition. It is assumed that the reader is acquainted with the following major topics which are treated in elementary chemistry: stoichiometry, equilibrium, acid–base phenomena, solubility, complexation, elementary thermodynamics, and electrochemistry. In 1923, W. M. Clark and B. Cohen published a paper in which they introduced the idea of plotting the electromotive force as referred to the hydrogen electrode E against the pH for several chemical systems. In 1928, Clark continued to develop this graphical presentation in his text on the determination of pH. The utility of the method was further extended by numerous other investigators such as M. Pourbaix, G. Valensi, G. Charlot, T. P. Hoar, R. M. Garrels, N. de Zoubov, J. Van Muylder, E. Deltombe, C. Vanleugenhaghe, J. Schmets, M. Maraghini, P. Van Rysselberghe, A. Moussard, J. Brenet, F. Jolas, K. Schwabe, J. Besson, W. Kunz, A. L. Pitman, J. N. Butler, P. Delahay, H. Freiser, H. A. Laitinen, L. G. Sillen, P. L. Cloke, and others. In 1963, M. Pourbaix in collaboration with N. de Zoubov published Atlas d’equilibres electrochimiques, a collection of E–pH diagrams for 90 chemical elements. This volume was translated into English in 1966 by J. A. Franklin and published as Atlas of Electrochemical Equilibria in Aqueous Solutions. Subsequently other investigators published computer programs for constructing the diagrams: L. Santoma; B. G. Williams, and W. H. Patrick; P. B. Linkson, B. D. Phillips, and C. D. Rowles; K. Osseo-Asare, A. W. Asihene, T. Xue, and V. S. T. Ciminellie; D. R. Drewes; M. Mao and E. Peters; H-H. Huang and C. A. Young; J. P. Birk and Laura L. Tayer; G. P. Glasby and H. D. Schulz; and Q. Feng, Y. Ma, and Y. Lu.
APA, Harvard, Vancouver, ISO, and other styles
4

Li, Jie Jack, Chris Limberakis, and Derek A. Pflum. "Reductions." In Modern Organic Synthesis in the Laboratory. Oxford University Press, 2008. http://dx.doi.org/10.1093/oso/9780195187984.003.0010.

Full text
Abstract:
The Barton deoxygenation (or Barton–McCombie deoxygenation) is a two-step reaction sequence for the reduction of an alcohol to an alkane. The alcohol is first converted to a methyl xanthate or thioimidazoyl carbamate. Then, the xanthate or thioimidazoyl carbamate is reduced with a tin hydride reagent under radical conditions to afford the alkane. Trialkylsilanes have also been used as the hydride source. Reviews: (a) McCombie, S. W. In Comprehensive Organic Synthesis; Trost, B. M.; Fleming, I., Eds.; Pergamon Press: Oxford, U. K., 1991; Vol. 8, Chapter 4.2: Reduction of Saturated Alcohols and Amines to Alkanes, pp. 818–824. (b) Crich, D.; Quintero, L. Chem. Rev. 1989, 89, 1413–1432. To a solution of the â-hydroxy-N-methyl-O-methylamide (0.272 g, 1.55 mol) in tetrahydrofuran (THF) (30 mL) were added carbon disulfide (6.75 mL, 112 mmol) and iodomethane (6.70 mL, 108 mmol) at 0 °C. The mixture was stirred at this temperature for 0.25 h, and then sodium hydride (60% suspension in mineral, 136.3 mg, 3.4 mmol) was added. After 20 min at 0 °C, the reaction was quenched by slow addition to 60 g of crushed ice. (Caution: hydrogen gas evolution!). The mixture was raised to room temperature and separated, and the aqueous layer was extracted with CH2Cl2 (4 × 15 mL). The combined organic extracts were dried (Na2SO4</aub>), concentrated in vacuo, and purified (SiO2, 5% EtOAc in hexanes) to afford 0.354 g (86%) of the xanthate. To a solution of the xanthate (2.95 g, 11.1 mmol) in toluene (100 mL) was added tributyltin hydride (15.2 mL, 56.6 mmol) and 2,2´-azobisisobutyronitrile (AIBN, 0.109 g, 0.664 mmol). The reaction mixture was then heated to reflux for 1 h. The mixture was cooled, concentrated in vacuo, and purified (SiO2, 100% hexanes to remove tin byproducts, followed by 10% EtOAc in hexanes to elute product) to afford 1.69 g (96%) of the N-methyl-O-methylamide.
APA, Harvard, Vancouver, ISO, and other styles
5

Hetherington, Naomi, Naomi Hetherington, and Clare Stainthorp. "T. H. Huxley, G. M. Mcc[Rie], Saladin [William Stewart Ross], P. A. Taylor, Charles Watts, F. W. Newman, Ignotus [Albert Simmons], W. B. Mctaggart, Ernst Haeckel, W. Sadler (Baldr) and J. Beal, ‘Agnosticism: A Symposium’." In Nineteenth-Century Religion, Literature and Society, 366–80. Routledge, 2020. http://dx.doi.org/10.4324/9781351272124-63.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Landau, G. M., and U. Vishkin. "Approximate String Searching." In Pattern Matching Algorithms. Oxford University Press, 1997. http://dx.doi.org/10.1093/oso/9780195113679.003.0009.

Full text
Abstract:
Consider the string searching problem, where differences between characters of the pattern and characters of the text are allowed. Each difference is due to either a mismatch between a character of the text and a character of the pattern, or a superfluous character in the text, or a superfluous character in the pattern. Given a text of length n, a pattern of length m and an integer k, serial and parallel algorithms for finding all occurrences of the pattern in the text with at most k differences are presented. For completeness we also describe an efficient algorithm for preprocessing a rooted tree, so that queries requesting the lowest common ancestor of every pair of vertices in the tree can be processed quickly. Input form. Two arrays: A = a1., ...,am - the pattern, T = t1, ...,tn - the text and an integer k (≥ 1). In the present chapter we will be interested in finding all occurrences of the pattern string in the text string with at most k differences. Three types of differences are distinguished: (a) A character of the pattern corresponds to a different character of the text - a mismatch between the two characters. (Item 2 in Example 1, below.) (b) A character of the pattern corresponds to “no character” in the text. (Item 4). (c) A character of the text corresponds to “no character” in the pattern. (Item 6). Example 1. Let the text be abcdefghi , the pattern bxdyegh and k = 3. Let us see whether there is an occurrence with ≤ k differences that ends at the eighth location of the text. For this the following correspondence between bcdefgh and bxdyegh is proposed. 1. b (of the text) corresponds to b (of the pattern). 2. c to x. 3. d to d. 4. Nothing to y. 5. e to e. 6. f to nothing. 7. g to g. 8. h to h.
APA, Harvard, Vancouver, ISO, and other styles
7

Cunha Sacramento, Juliane, Safira Rios Souza Cruz, Renan Cirilo dos Santos Junior, Alessandra Morgana de Menezes Fonsêca, Jarede Souza Silva, Matheus Silva Leal de Melo, Laís Souza da Veiga Santana, Laíze Maria Santos Costa, Tiago Alves dos Santos, and Aline Macedo Carvalho Freitas. "N O V O C O R O N AV Í R U S : G U I A D E R E C O M E N D A Ç Õ E S PA R A T R A B A L H A D O R E S / A S D A L I M P E Z A U R B A N A." In COVID-19: conhecimento baseado em evidências e soluções criativas/sustentáveis no enfrentamento. Editora Conhecimento Livre, 2020. http://dx.doi.org/10.37423/200601549.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Li, Jie Jack, Chris Limberakis, and Derek A. Pflum. "Carbon−Carbon Bond Formation." In Modern Organic Synthesis in the Laboratory. Oxford University Press, 2008. http://dx.doi.org/10.1093/oso/9780195187984.003.0011.

Full text
Abstract:
Reviews: (a) Vicarion, J. L.; Badia, D.; Carillo, L.; Reyes, E.; Etxebarria, J. Curr. Org. Chem. 2005, 9, 219-235. (b) Mahrwald, R. Ed. In Modern Aldol Reactions; Wiley-VCH: Weinheim, 2004; Vol. 1., pp. 1-335 (c) Mahrwald, R. Ed. In Modern Aldol Reactions; Wiley-VCH: Weinheim, 2004; Vol. 2., pp. 1-345.(d) Machajewski, T. D.; Wong, C.-H. Angew. Chem. Int. Ed. 2000, 39, 1352-1375. (e) Carriera, E. M. In Modern Carbonyl Chemistry; Otera, J.; Wiley-VCH: Weinheim, 2000; Chapter 8: Aldol Reaction: Methodology and Stereochemistry, 227-248. (f) Paterson, I.; Cowden, C. J.; Wallace, D. J. In Modern Carbonyl Chemistry; Otera, J.; Wiley-VCH: Weinheim, 2000; Chapter 9: Stereoselective Aldol Reactions in the Synthesis of Polyketide Natural Products, pp. 249-298. (g) Franklin, A. S.; Paterson, I. Contemp. Org. Synth. 1994, 1 317-338. (h) Heathcock, C. H. In Asymmetric Synthesis; Morrison, J. D., Ed.; Academic Press: Orlando, Fl.; 1984; Vol. 3., Chapter 2: The Aldol Addition Reaction, pp. 111-212. (i) Mukaiyama, T. Org. React. 1982, 28, 203-331. Since the early 1980s, aldol condensations involving boron enolates have gain great importance in asymmetric synthesis, particularly the synthesis of natural products with adjacent stereogenic centers bearing hydroxyl and methyl groups. (Z)-Boron enolates tend to give a high diastereoslectivity preference for the syn-stereochemistry while (E)-boron enolates favor the anti-stereochemistry. Because the B-O and B-C bonds are shorter than other metals with oxygen and carbon, the six membered Zimmerman–Traxler transition state in the aldol condensation tends to be more compact which accentuates steric interactions, thus leading to higher diastereoselectivity. When this feature is coupled with a boron enolate bearing a chiral auxillary, high enantioselectivity is achieved. Boron enolates are generated from a ketone and boron triflate in the presence of an organic base such as triethylamine. Reviews: (a) Abiko, A. Acc. Chem. Res. 2004, 37, 387-395. (b) Cowden, C. J. Org. React. 1997, 51, 1-200.
APA, Harvard, Vancouver, ISO, and other styles
9

"Co-C Cmoa -n o a -man ma gneamge age enmt ment en otrosrhoasrr sha h in a g ri n o ring ogfopfowf er p ower to m powe tro manage an li angkes links comm cuonm it myuln ea it dyerlsea community leader w de it rhsw go it vhe rn g m ov eenrt nmen s with governm en atg en t c to iaegsemntaocnieaesgneatoblleiennkasb le users/s utsaekresh /s otladkeerhsotlodfeurlsly to efnugla ly g engage in lo users/stakeholders to fu e in local dec caiasglieodnneccmiiessaioknitnomg . eaAnksa in b g le . As." In Water Co-Management, 370. CRC Press, 2013. http://dx.doi.org/10.1201/b14591-36.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

"toChristian th e is m . 151 And s o , ofcourse , w as P la to n is m . 152 The T im aeu shadtalkedofaFa th e r an d M aker oftheco sm o s. And tolaterwriters , Plato seem ed todistinguishthreeu lt imateorigins , principles , archai : God, M a tte r an d Form , w h ic h th eyalsolistedasthe By Whom, From W hat an dInV iew ofW hat; oras God, M a tte r an dthePattern ; orastheAc tiv e , theMa tte r and thePattern . O rth odoxChristian th e is m w as, ofcourse , toa rg uethatofthesethree , God a lo n e was absolutelyoriginal , an dthatMa tte r an d Form somehow to oktheirorigin from h im . 153 Even in Christ 's lifetime , Philo — a Jew nevercon ­ vertedto th e new church — w as bringingStoic an dPlatonice le men ts together in amonothe is t ic cosm ogony w h ic hsetastrikingprecedentforChristianwriters . CitingPlato , Philogaveas " th ereason why theun iv ersew as made ," that " th eFa th e r an d M aker isgood , and thatbe in g good He d id notg ru dge th ebestk in dofnaturetoma tt e r (o usia ) w h ic hofitselfhadno th in gexcellent , th oughitw as capab le ofb eco m in gallthings . " Philodoesnotderivematter from H a tc h , G * re ^ eTkhIidseaacsc . ou17n5t -7 o7f . Stoicco sm o lo gyisthatg iv e n by 152 th e o lo gyisTe he xcceolmlenptatibilityofP la to n is m w ith ChristianP la to n is m and ItsInflluyenbcroeug (B htoso to unt , in 19A2 . 4 ) E . . Taylor 's 153H a tc h , G reek Ideas . 180 -8 2 ." In Origins and Species, 624–823. Routledge, 2018. http://dx.doi.org/10.4324/9780429450198-21.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Wiederaufbau, G.m.b.H"

1

Gil-Flores, Lorena, María D. Salvador, Felipe L. Penaranda-Foix, Roberto Rosa, Paolo Veronesi, Cristina Leonelli, and Amparo Borrell. "LOW TEMPERATURE DEGRADATION BEHAVIOUR OF 10Ce-TZP/Al2O3 BIOCERAMICS OBTAINED BY MICROWAVE SINTERING TECHNOLOGY." In Ampere 2019. Valencia: Universitat Politècnica de València, 2019. http://dx.doi.org/10.4995/ampere2019.2019.9887.

Full text
Abstract:
Zirconia is one of the most used ceramics, especially for biomedical applications, due to its exceptional mechanical properties. However, it is commonly known that its properties can be diminished owing to a low temperature degradation (LTD). This phenomenon consists on a spontaneous phase transformation, from tetragonal to monoclinic, under certain conditions, which is accelerated when the samples are exposed under high levels of humidity at a temperature range between 20-300 ºC. In addition to the fact that the monoclinic phase presents worse mechanical properties than the tetragonal one, there is a volume change of 4% between phases that gives rise to defects in the material as microcracks. Due to this reason, zirconia prostheses failed catastrophically inside the human body between 1999 and 20011. Previous researches reveal that Al2O3 addition suppress the propagation of phase transformation2. Thus, the aim of the present work is to study the hydrothermal ageing of zirconia doped with ceria and toughened with alumina (10Ce-TZP/Al2O3) composite, which has been sintered by microwave employing two different frequencies: 2.45 and 5.8 GHz. Microwave heating technology is based on the absorption of electromagnetic radiation by the material, which allows the sample to be heated. So far, most microwave heating equipments use 2.45 GHz; accordingly, the novelty of this study is to employ a frequency of 5.8 GHz and to investigate its effect on LTD. LTD is carried out in an autoclaved in steam at 120 ºC and 1.2 bar, because these conditions accelerate the hydrothermal aging process3. In order to characterize the degraded samples, micro-Raman spectroscopy, AFM, nanoindentation technique and electronic microscopy have been performed. References 1. Norton, M. R., Yarlagadda, R., Anderson, G. H. J. Bone Joint Surg. Br., 2002, 84–B, 631–635. 2. Fabbri, P., Piconi, C., Burresi, E., Magnani, G., Mazzanti, F., Mingazzini, C. Dent. Mater., 2014. 3. Presenda, Á., Salvador, M. D., Moreno, R., Borrell, A. J. Am. Ceram. Soc., 2015, 98, 3680–3689.
APA, Harvard, Vancouver, ISO, and other styles
2

Bratić, Diana, and Nikolina Stanić Loknar. "AI driven OCR: Resolving handwritten fonts recognizability problems." In 10th International Symposium on Graphic Engineering and Design. University of Novi Sad, Faculty of technical sciences, Department of graphic engineering and design,, 2020. http://dx.doi.org/10.24867/grid-2020-p82.

Full text
Abstract:
Optical Character Recognition (OCR) is the electronic or mechanical conversion of images of typed, handwritten, or printed text into machine-encoded text. Advanced systems are capable to produce a high degree of recognition accuracy for most technic fonts, but when it comes to handwritten forms there is a problem occur in recognizing certain characters and limitations with conventional OCR processes persist. It is most pronounced in ascenders (k, b, l, d, h, t) and descenders (g, j, p, q, y). If the characters are linked by ligatures, the ascending and descending strokes are even less recognizable to the scanners. In order to reduce the likelihood of a recognition error, it is a necessary to create a large database of stored characters and their glyphs. Feature extraction decomposes glyphs into features like lines, closed loops, line direction, and line intersections. A Multilayer Perceptron (MLP) neural network based on Back Propagation Neural Network (BPNN) algorithm as a method of Artificial Intelligence (AI) has been used in text identification, classification and recognition using various methods: image pattern based, text-based, mark-based etc. Also, the application of AI generates of a large database of different letter cuts, and modifications, and variation of the same letter character structure. For this purpose, the recognizability test of handwritten fonts was performed. Within main group, subgroups of independent letter characters and letter characters linked by ligatures are created, and reading errors were observed. In each subgroup, four different font families (bold stroke, alternating stroke, monoline stroke, and brush stroke) were tested. In subgroup of independent letter characters, errors were observed in similar rounded lines such as the characters a, and e. In the subgroup of letter characters linked by ligatures, errors were also observed in similar rounded lines such as the letter characters a and e, m and n, but also in ascenders b and l, and descenders g and q. Furthermore, seven letter cuts were made from each basic test letters, and up to are thin, ultra-light, light, regular, semi-bold, bold, and ultra-bold, and stored in the existing EMNIST database. The scanning test was repeated, and recently obtained results showed a decrease in the deviation rate, i.e. higher accuracy. Reducing the number of deviations shows that the neural network gives acceptable answers but requires creation of a larger database within about 56,000 different characters.
APA, Harvard, Vancouver, ISO, and other styles
3

Wir-Konas, Agnieszka, and Kyung Wook Seo. "Between territories: Incremental changes to the domestic spatial interface between private and public domains." In 24th ISUF 2017 - City and Territory in the Globalization Age. Valencia: Universitat Politècnica València, 2017. http://dx.doi.org/10.4995/isuf2017.2017.6061.

Full text
Abstract:
Between territories: Incremental changes to the domestic spatial interface between private and public domains. Agnieszka Wir-Konas¹, Kyung Wook Seo¹ ¹Department of Architecture and Built Environment, Northumbria University, Newcastle upon Tyne. Newcastle City Campus, 2 Ellison Pl, Newcastle upon Tyne NE1 8ST. E-mail: agnieszka.wir-konas@northumbria.ac.uk, kyung.seo@northumbria.ac.uk Keywords (3-5): building-street interface, incremental change, micro-morphology, private-public boundary, territory Conference topics and scale: Urban form and social use of space In this paper we investigate incremental changes to the relationship between private and public territory on the micro-morphological scale of the residential building-street interface. The building-street interface lies on the edge between two distinctively different spatial domains, the house and the street, and provides a buffer which may be adjusted to aid the transition from private to public territory. The structure of the space impacts both domains: it provides a fit transition from the private dwelling to the public territory, creates a space for probabilistic encounters between inhabitants and strangers, and maintains the liveability of the public street. The aim of this paper is threefold: Firstly, we recognise morphological differences in the structure of the interfaces and the way the transition from private to public territory was envisioned and designed in different societal periods. Secondly, we study incremental changes to the interface, representing individual adjustments to the private-public boundary, in order to recognize common types of adaptations to the existing structure of the interface. The history of changes to each individual building and building-street interface was traced by analysing planning applications and enforcements publicly provided by the city council. Lastly, we compare the capacity of each building-street interface to accommodate incremental change to the public-private transition. We argue that studying the incremental change of the interface and the capacity of each interface to accommodate micro-scale transformations aids in the understanding of the complex social relationship between an individual and a collective in the urban environment. References (180 words) Conzen, M. R. G. (1960). Alnwick, Northumberland: a study in town-plan analysis. Transactions and Papers (Institute of British Geographers) 27, iii-122. Gehl, J. (1986) ‘Soft edges in residential streets’. Scandinavian Housing and Planning Research 3(2), 89-192 Gehl, J. (2013) Cities for People (Island Press, Washington DC). Habraken, N. J. and Teicher, J. (2000) The structure of the ordinary: form and control in the built environment (MIT press, Cambridge). Hillier, B. and Hanson, J. (1984) The Social Logic of Space (Cambridge: Cambridge University Press). Jacobs, J. (1961) The Death and Life of Great American Cities (Middlesex: Penguin, Harmondsworth). Lawrence, R. J. (1987) Housing, dwellings and homes: Design theory, research and practice (John Wiley, Chichester). Palaiologou, G., Griffiths, S., and Vaughan, L. (2016), ‘Reclaiming the virtual community for spatial cultures: Functional generality and cultural specificity at the interface of building and street’. Journal of Space Syntax 7(1), 25-54. Whitehand, J. W. R. and Morton, N. J. and Carr, C. M. H. (1999) ‘Urban Morphogenesis at the Microscale: How Houses Change’, Environment and Planning B: Planning and Design 26(4), 503-515.
APA, Harvard, Vancouver, ISO, and other styles
4

Miglietti, Warren, Juan Escudero, Julio Lanza, Ian Summerside, and Zaki Zainuddin. "Repair Process Technology Development and Experience of Frame 7FA+E, Stage 1 Turbine Buckets." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-46766.

Full text
Abstract:
The 60 Hz, Frame 7F engine has been in commercial operation for more than two decades now with approximately 600 Frame 7 (F, FA, FA+ and FA+e models) machines existing in North America and a total of over 1100 F-class machines throughout the world. Volatile market dynamics in the electrical power generation field continues to force power companies to identify prudent material cost reductions opportunities in their Operations and Maintenance (O&M) business. Today, there is an industry-recognized need for advanced hot gas path component repair and reconditioning capability for operators of F-Class gas turbines that can be highly cost effective with short cycle times. The first stage buckets of the Frame 7F engine are unshrouded; whereas the next 2 stages are shrouded. Out of these rotating components, the first stage buckets show the worst degradation and thus repair of these components have been a focus point for Power Systems Mfg., LLC (PSM). The technical objective is to develop a comprehensive set of repair schemes for the stage 1 buckets since these components have the highest frequency of replacement. Listed below are some of the special repair processes that have been developed for the first stage bucket: a) Acid stripping of the MCrAlY coating (and internal aluminide coating having endured 48,000 hours of service). b) High speed grinding off of the electron beam (EB) or laser beam (LB) welded tip cover plates. c) High frequency gas tungsten arc (GTA) weld repairs of platform cracks using a new and novel developed high strength yet ductile weld filler metal. d) High frequency gas tungsten arc weld attachment of new tip cover plates. e) Laser metal forming/cladding of new squealer tips. f) Rejuvenation heat treatment for buckets that have reached 48,000 hours. g) Application of new internal aluminide coating. h) Application of upgrade design features, such as platform cooling and platform undercut. i) Application of a superior MCrAlY bond coating to that of the Original Engine Manufacturer (OEM). j) Application of a vertically cracked high density (VCHD) strain tolerant thermal barrier coating (TBC). This technical paper describes the repair development process, the implementation of the different stages of the repair schemes and presents metallurgical and mechanical characteristics of the repaired regions of the component.
APA, Harvard, Vancouver, ISO, and other styles
5

EL-Bagory, Tarek M. A. A., Maher Y. A. Younan, and Hossam E. M. Sallam. "Limit Load Determination and Material Characterization of Cracked Polyethylene Miter Pipe Bends." In ASME 2011 Pressure Vessels and Piping Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/pvp2011-57587.

Full text
Abstract:
The quality of Natural Gas Piping Systems, NGPS, must be ensured against manufacturing defects. The main purpose of the present paper is to investigate the effect of loading mode and load angle (30°,45°, and 60°) on the limit load of miter pipe bends, MPB, under different crack depths a/W = 0 to 0.4 at a crosshead speed 500 mm/min. The geometry of cracked and un-cracked multi miter pipe bends are: pipe bend angle, α = 90°, pipe bend factor, h = 0.844, standard dimension ratio, SDR = 11, and three junctions, m = 3. The material of the investigated pipe is a high-density polyethylene, HDPE, which is commonly used in natural gas piping systems. The welds at the miter pipe junction are produced by butt-fusion welding. For all loading modes the limit load is obtained by the tangent intersection method, TI, from the load deflection curves produced by the specially designed and constructed testing machine at the laboratory. Tensile tests are conducted on specimens longitudinally extruded from the pipe with thickness, T = 10, 30 mm, at different crosshead speeds (5–500 mm/min), and different gauge lengths (G = 20, 25, and 50 mm) to determine the mechanical properties of welded and un-welded specimens. The fracture toughness is determined on the basis of elastic plastic fracture mechanics, EPFM. Curved three-point bend specimens, CTPB, are used. All specimens are provided with artificially pre-crack at the crack tip, a/W = 0.5. The effect of specimen thickness variation (B = 10, 15, 22.5, 30, 37.5, and 45mm) for welded and un-welded specimens is studied at room temperature (Ta = 23°C) and at different crosshead speeds, VC.H, ranging from 5 to 500 mm/min. The study reveals that increasing the crack depth leads to a decrease in the stiffness and limit load of MPB for both in-plane, and out-of-plane bending moment. In case of combined load (out-of-plane and in-plane opening; mode) higher load angles lead to an increase in the limit load. The highest limit load value occurs at a loading angle, φ = 60°. In case of combined load (out-of-plane and in-plane closing; mode) the limit load decreases with increasing load angles. On the other hand, higher limit load values are proved at a load angle, φ = 30°. For combined load opening case; higher values of limit load are obtained. The crosshead speed has a significant effect on the mechanical behavior of both welded and un-welded specimens. The fracture toughness, JIC, is greater for un-welded than welded specimen.
APA, Harvard, Vancouver, ISO, and other styles
6

Cabanes, Jose Luis, Federico Iborra-Bernad, and Carlos Bonafé-Cervera. "Reconstrucción virtual de ambientes urbanos a partir de fotografías históricas a través de Image Based Animations (IBA). La Plaza de la Virgen de Valencia alrededor de 1870." In 24th ISUF 2017 - City and Territory in the Globalization Age. Valencia: Universitat Politècnica València, 2017. http://dx.doi.org/10.4995/isuf2017.2017.6055.

Full text
Abstract:
Reconstrucción virtual de ambientes urbanos a partir de fotografías históricas a través de Image Based Animations (IBA). La Plaza de la Virgen de Valencia alrededor de 1870. Jose Luis Cabanes Ginés¹, Federico Iborra Bernad², Carlos Bonafé Cervera3 ¹Departamento de Expresión Gráfica Arquitectónica. Universidad Politécnica de Valencia. Caminio de Vera s/n 46022 Valencia. 2Departamento de Composición Arquitectónica. Universidad Politécnica de Valencia. Caminio de Vera s/n 46022 Valencia 3Departamento de Ing. Cartográf. Geodesia y Fotogramtría. Universidad Politécnica de Valencia. Caminio de Vera s/n 46022 Valencia E-mail: jlcabane@ega.upv.es, f_iborra@yahoo.es, carboce1@topo.upv.es Keywords (3-5): virtual reconstruction, historical urban environment, image based animations Conference topics and scale: City transformations / Tools of analysis in urban morphology The recreation of the historical environment of emblematic urban spaces in our cities through interactive technologies, allows to extend their knowledge among the interested users while contributing to its assessment. When the documentary bases are photographs it is possible to carefully model the recorded elements using photogrammetry techniques based on 3D primitives, so that by means of an immersive navigation limited to certain points of view, an appearance of acceptable tridimensionality is obtained, where only isolated images of dispersed frames are available. The virtual recreation can be completed increasing its realistic appearance through its edition with animations of objects (for example, carriages) and characters, texts, musical setting, etc. The results can be presented in formats such as video or navigation through virtual reality helmets. From a selection of the first historical photographs of the Plaza de la Virgen, that we have obtained searching in several documentary sources, our multidisciplinary team is interested in a reliable, realistic and pleasant presentation of the urban environment of one of the most representative places in the city of Valencia, whose spatial configuration has changed significantly over the years. References (100 words) Braun, C., Kolbe, T. H., Lang, F., Schickler, W., Steinhage, V., Cremers, A. B., Förstner, W., Plümer, L., 1995. Models for photogrammetric building reconstruction. Computers &amp; Graphics, Volume 19, Issue 1, pp. 109-118. Debevec, P., Taylor, C. J. and Malik, J., 1996. Modeling and rendering architecture from photographs: A hybrid geometry and image-based approach. SIGGRAPH’96, pp. 11–20. De Mesa, A., Regot, J., Nuñez, M. A. and Buill, F., (2009). Métodos y procesos para el levantamiento de reconstrucción tridimensional gráfica de elementos del patrimonio cultural. La iglesia de Sant Sever de Barcelona. Revista EGA, nº 14, pp. 82-89. Drap, P., Grussenmeyer, P. and Gaillard, G., 2001. Simple Photogrammetric Methods with ARPENTEUR: 3-D Plotting and Orthoimage generation. XVIII International Symposium CIPA 2001, Potsdam (Germany). International Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences, nº 34 (Part 5/C7), pp. 47-54. El-Hakim, S., Beraldin, J. and Lapointe, A., 2002. Towards Automatic Modeling of Monuments and Towers. IEEE Proceedings of the International Symposium on 3D Data Processing Visualization and Transmission, 3DPVT 2002, Padua, Italy, pp. 526-531. Proyecto Barcelona Darrera Mirada, http://darreramirada.ajuntament.barcelona.cat/#historia/8/1 The Old New York, http://vimeo.com/160024074, https://vimeo.com/162572088
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography