Academic literature on the topic 'Jacobi B. S'
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Journal articles on the topic "Jacobi B. S"
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Arcoya, David, and Lucio Boccardo. "Regularizing Effect of Two Hypotheses on the Interplay Between Coefficients in Some Hamilton–Jacobi Equations." Advanced Nonlinear Studies 21, no. 2 (March 16, 2021): 251–60. http://dx.doi.org/10.1515/ans-2021-2126.
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Abstract We study of the regularizing effect of the interaction between the coefficient of the zero-order term and the lower-order term in quasilinear Dirichlet problems whose model is ∫ Ω M ( x , u ) ∇ u ⋅ ∇ φ + ∫ Ω a ( x ) u φ = ∫ Ω b ( x ) | ∇ u | q φ + ∫ Ω f ( x ) φ for all φ ∈ W 0 1 , 2 ( Ω ) ∩ L ∞ ( Ω ) , \int_{\Omega}M(x,u)\nabla u\cdot\nabla\varphi+\int_{\Omega}a(x)u\varphi=\int_{% \Omega}b(x)|\nabla u|^{q}\varphi+\int_{\Omega}f(x)\varphi\quad\text{for all }% \varphi\in W_{0}^{1,2}(\Omega)\cap L^{\infty}(\Omega), where Ω is a bounded open set of ℝ N {\mathbb{R}^{N}} , M ( x , s ) {M(x,s)} is a Carathéodory matrix on Ω × ℝ {\Omega\times\mathbb{R}} which is elliptic (that is, M ( x , s ) ξ ⋅ ξ ≥ α | ξ | 2 > 0 {M(x,s)\xi\cdot\xi\geq\alpha|\xi|^{2}>0} for every ( x , s , ξ ) ∈ Ω × ℝ × ( ℝ N ∖ { 0 } ) {(x,s,\xi)\in\Omega\times\mathbb{R}\times(\mathbb{R}^{N}\setminus\{0\})} ) and bounded (that is, | M ( x , s ) | ≤ β {|M(x,s)|\leq\beta} for every ( x , s ) ∈ Ω × ℝ {(x,s)\in\Omega\times\mathbb{R}} ), b ( x ) ∈ L 2 2 - q ( Ω ) {b(x)\in L^{\frac{2}{2-q}}(\Omega)} , 1 < q < 2 {1<q<2} and 0 ≤ a ( x ) ∈ L 1 ( Ω ) {0\leq a(x)\in L^{1}(\Omega)} . We prove the existence of a weak solution u belonging to W 0 1 , 2 ( Ω ) {W_{0}^{1,2}(\Omega)} and to L ∞ ( Ω ) {L^{\infty}(\Omega)} when either b ∈ L 2 m 2 - q ( Ω ) for some m > N 2 and \displaystyle b\in L^{\frac{2m}{2-q}}(\Omega)\text{ for some }m>\frac{N}{2}% \text{ and} (0.1) ∃ Q > 0 such that | f ( x ) | ≤ Q a ( x ) \displaystyle\exists\,Q>0\text{ such that }|f(x)|\leq Qa(x) or f ∈ L m ( Ω ) for some m > N 2 and \displaystyle f\in L^{m}(\Omega)\text{ for some }m>\frac{N}{2}\text{ and} (0.2) ∃ R > 0 such that | b ( x ) | 2 2 - q ≤ R a ( x ) . \displaystyle\exists\,R>0\text{ such that }|b(x)|^{\frac{2}{2-q}}\leq Ra(x). In addition, we also prove the existence for every f ∈ L 1 ( Ω ) {f\kern-1.0pt\in\kern-1.0ptL^{1}(\Omega)} and b ( x ) ∈ L 2 2 - q ( Ω ) {b(x)\kern-1.0pt\in\kern-1.0ptL^{\frac{2}{2-q}}(\Omega)} satisfying both conditions (0.1) and (0.2) jointly.
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Dalla Piazza, Francesco, and Riccardo Salvati Manni. "On the Coble quartic and Fourier–Jacobi expansion of theta relations." International Journal of Mathematics 26, no. 02 (February 2015): 1550019. http://dx.doi.org/10.1142/s0129167x15500196.
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In [Q. Ren, S. Sam, G. Schrader and B. Sturmfels, The universal Kummer threefold, Experiment Math.22(3) (2013) 327–362], the authors conjectured equations for the universal Kummer variety in genus 3 case. Although, most of these equations are obtained from the Fourier–Jacobi expansion of relations among theta constants in genus 4, the more prominent one, Coble's quartic, cf. [A. Coble, Algebraic Geometry and Theta Functions, American Mathematical Society Colloquium Publications, Vol. 10 (American Mathematical Society, 1929)] was obtained differently, cf. [S. Grushevsky and R. Salvati Manni, On Coble's quartic, preprint (2012), arXiv:1212.1895] too. The aim of this paper is to show that Coble's quartic can be obtained as Fourier–Jacobi expansion of a relation among theta-constants in genus 4. We get also one more relation that could be in the ideal described in [Experiment Math.22(3) (2013) 327–362].
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Hipp, Christian. "Optimal Dividend Payment in De Finetti Models: Survey and New Results and Strategies." Risks 8, no. 3 (September 10, 2020): 96. http://dx.doi.org/10.3390/risks8030096.
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We consider optimal dividend payment under the constraint that the with-dividend ruin probability does not exceed a given value α. This is done in most simple discrete De Finetti models. We characterize the value function V(s,α) for initial surplus s of this problem, characterize the corresponding optimal dividend strategies, and present an algorithm for its computation. In an earlier solution to this problem, a Hamilton-Jacobi-Bellman equation for V(s,α) can be found which leads to its representation as the limit of a monotone iteration scheme. However, this scheme is too complex for numerical computations. Here, we introduce the class of two-barrier dividend strategies with the following property: when dividends are paid above a barrier B, i.e., a dividend of size 1 is paid when reaching B+1 from B, then we repeat this dividend payment until reaching a limit L for some 0≤L≤B. For these strategies we obtain explicit formulas for ruin probabilities and present values of dividend payments, as well as simplifications of the above iteration scheme. The results of numerical experiments show that the values V(s,α) obtained in earlier work can be improved, they are suboptimal.
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Ovcharov, Alexander V., and Pavel D. Golub. "Patriotic education of students on the example of the life of outstanding Russian physicists." Problems of Modern Education (Problemy Sovremennogo Obrazovaniya), no. 3, 2020 (2020): 106–15. http://dx.doi.org/10.31862/2218-8711-2020-3-106-115.
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The article presents the material showing how to organize Patriotic education of schoolchildren and university students on the example of actions and statements made by Russian and Soviet physicists. The facts testifying numerous Physicists’ deep love for Russia – their homeland – are brought about. Consideration of the topic begins with the activities of the first Russian academician M. V. Lomonosov, which is a vivid example of the scientist-patriot’s love for the Motherland. Similar facts from the life and scholarly endeavor of Russian electrical engineers V. V. Petrov, P. L. Schilling, electrical engineersinventors B. S. Jacobi, E. H. Lenz are given. The historical facts testifying the true service to the Motherland by a number of other physicists, including Zh. I. Alferov – a Nobel laureate, known throughout the scientific community for his work in the field of modern physics.
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Kano, Patrick O., Moysey Brio, and Jacob Bailey. "Optimal parameter selection in Weeks’ method for numerical Laplace transform inversion based on machine learning." Journal of Algorithms & Computational Technology 15 (January 2021): 174830262199962. http://dx.doi.org/10.1177/1748302621999621.
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The Weeks method for the numerical inversion of the Laplace transform utilizes a Möbius transformation which is parameterized by two real quantities, σ and b. Proper selection of these parameters depends highly on the Laplace space function F( s) and is generally a nontrivial task. In this paper, a convolutional neural network is trained to determine optimal values for these parameters for the specific case of the matrix exponential. The matrix exponential eA is estimated by numerically inverting the corresponding resolvent matrix [Formula: see text] via the Weeks method at [Formula: see text] pairs provided by the network. For illustration, classes of square real matrices of size three to six are studied. For these small matrices, the Cayley-Hamilton theorem and rational approximations can be utilized to obtain values to compare with the results from the network derived estimates. The network learned by minimizing the error of the matrix exponentials from the Weeks method over a large data set spanning [Formula: see text] pairs. Network training using the Jacobi identity as a metric was found to yield a self-contained approach that does not require a truth matrix exponential for comparison.
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CADENA-CASTAÑEDA, OSCAR J. "A proposal towards classification of the Raspy Crickets (Orthoptera: Stenopelmatoidea: Gryllacrididae) with zoogeographical comments: An initial contribution to the higher classification of the Gryllacridines." Zootaxa 4605, no. 1 (May 16, 2019): 1. http://dx.doi.org/10.11646/zootaxa.4605.1.1.
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In this contribution to the study of gryllacridines or raspy crickets (Orthoptera: Gryllacrididae), a new proposal for classification of this family is provided, dividing it into two subfamilies and ten tribes that includes most of the 114 known genera to date (including the new genera described here). It describes and redefines two subfamilies: Hyperbaeninae n. subf. and Gryllacridinae n. sensu, ten tribes: Phryganogryllacridini n. trib., Capnogryllacridini n. trib., Asarcogryllacridini n. trib., Hyperbaenini n. trib., Paragryllacridini n. trib., Ametrini n. trib., Ametroidini n. trib., Gryllacridini n. sensu., Eremini n. trib. and Progryllacridini n. trib.; ten genera: Claudiagryllacris n. gen., Griffinigryllacris n. gen., Gorochovgryllacris n. gen., Ingrishgryllacris n. gen., Rentzgryllacris n. gen., Willemsegryllacris n. gen., Karnygryllacris n. gen., Brunnergryllacris n. gen., Bianigryllacris n. gen. and Hugelgryllacris n. gen.; seven genera groups: Gryllacrae n. group. (placed under Gryllacridini n. trib. comprising ten genera: Caustogryllacris, Eugryllacris, Gryllacris, Lyperogryllacris, Nesogryllacris, Ocellarnaca, Phlebogryllacris, Prosopogryllacris, Willemsegryllacris n. gen. and Xanthogryllacris), Metriogryllacrae n. group. (under Gryllacridini grouped Metriogryllacris, Homogryllacris, Pseudasarca n. stat. and Furcilarnaca), Anancistrogerae (Anancistrogera, Ancistrogera, Angustogryllacris, Aphanogryllacris, Celebogryllacris), Triaenogryllacrae n. group. (under Gryllacridinae only comprising Triaenogryllacris) the next groups under Ametrini n. trib.: Ametrae n. group. (comprising two genera: Ametrus and Pareremus), Apotrechae n. group. (including three genera: Apotrechus, Apterolarnaca and Bianigryllacris n. gen.) and Apteronomae n. group. (comprising two genera: Ametrosomus and Apteronomus). The status of Dictogryllacris reinst. stat., was restored, previously transferred by Gorochov 2003 as subgenus of Capnogryllacris and to Pseudasarca n. stat. as full genus status is proposed. One genera, one subgenus and one fossil species are synonymized: Xiphogryllacris n. syn. (under Hyalogryllacris) and †Gryllacris brevippennis n. syn. (under †Macrelcana ungeri). The subgenus Glolarnaca n. stat. (included under Zalarnaca), is considered as full genus in Gryllacridinae (Gryllacridini). 57 new combinations are proposed, with particular emphasis on Niphetogryllacris, placing 36 of the 43 existing species of the genus: Pissodogryllacris tesellata n. comb., Willemsegryllacris barnesi n. comb. (previously placed under Gryllacris), Afrogryllacris nigripceps n. comb. (previously placed under in Barombogryllacris), Anancistrogera nigroscutata n. comb., A. cornualis n. comb. and A. genualis n. comb. (included by Karny in Caustogryllacris and by Gorochov in the subgenus Pseudolarnaca, here transfered to Anancistrogera), Hugelgryllacris tchancha n. comb. (before in Psilogryllacris), Diaphanogryllacris annandalei n. comb., D. barkudensis n. comb., D. dravida n. comb., D. gravelyi n. comb., Claudiagryllacris finoti n. comb. C. stigmata n. comb., C. lemur n. comb., C. fryeri n. comb., Stictogrtllacris pungens n. comb., S. madagassa n. comb., S. genufuscata n. comb., S. vosseleri n. comb., S. difficilis n. comb., S. paulani n. comb., Stictogryllacris signoreti n. comb., S. indecisa n. comb., S. conspersa n. comb., S. pittarellii n. comb., S. ametroides n. comb., S. jacobi n. comb., S. kilimandjarica n. comb., S. meruensis n. comb.; S. neglecta n. comb.; S. submutica n. comb., Griffinigryllacris reunionis n. comb., G. adelungi n. comb., G. mauritiana n. comb., Karnygryllacris occipitalis n. comb., K. atriceps n. comb., K. brevipennis n. comb., K. humilis n. comb., K. scurra n. comb., K. triocellata n. comb., K. pittarellii n. comb., K. grylloides n. comb., Brunnergryllacris testaceus n. comb. and B. eximia n. comb (previously placed under Niphetogryllacris), Rentzgryllacris sechellensis n. comb. (before in Prosopogryllacris and the three subspecies are treated as full species), Gorochovgryllacris navicula n. comb. (transferred from Brachybaenus), Bianigryllacris trilobus n. comb., B. bilobus n. comb., B. digitatus n. comb., B. fallax n. comb., B. nigrigeniculatus n. comb., B. parvospinus n. comb., B. quadratus n. comb. and B. transversus n. comb. (previously placed under Apotrechus), Hyalogryllacris orthoxipha n. comb. (previously placed under Xiphogryllacris), Afroneanias glauningi n. comb., A. sphinix n. comb. and Ingrishgryllacris brevifalcatus n. comb. (previously placed under Ametroides and Glomeremus respectively). A key to the identification of the subfamilies and tribes is provided, plus historical background of the major taxonomic works on the group and the few contributions on ecology, morphology, and behavior is also done. It also discusses the status of fossil taxa thought to belong to the family. A preliminary analysis of the zoogeography of the family from the parameters of richness, diversity and distribution patterns of different groups studied, and also, some final comments on what has been achieved in this contribution are give, what is missing to the study of gryllacridines to the future and some problems that still affect the taxonomy to genera and species level. Finally, a check list in which all family taxa are included with the new classification is provided, with some comments on their distribution and taxonomic status if necessary.
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Ježić, Mislav. "Povijesni slojevi teksta Bhagavadgīte – predaja teksta, proširenja i preoblike pouke." Filozofska istraživanja 41, no. 2 (July 9, 2021): 247–72. http://dx.doi.org/10.21464/fi41202.
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Bhagavadgītā se nerijetko smatra najsvetijom hinduističkom pjesmom. Mnogi su se okušali u njenu tumačenju, a među filolozima nerijetki, počev od Wilhelma von Humboldt, i u utvrđivanju povijesti njena teksta koji nosi tragove višestrukih prerada. Iako su neki došli do točnih zapažanja o nekim šavovima u tekstu (Friedrich Otto Schrader, Hermann Oldenberg, Hermann Jacobi), a neki i bliže cjelovitijoj slici povijesti teksta (Jarl Charpentier, Angelika Malinar, Gajanan Shripad Khair, Purushottam Lal Bhargava), mnogi su dobri znalci, obeshrabreni nesigurnošću utvrđivanja povijesti teksta, više voljeli tumačiti ga kao nedjeljivu cjelinu (Paul Deussen, Douglas Hill, Etienne Lamotte, Franklin Edgerton, Robert Zaehner). Ipak je između 1970-ih i 2009. došlo do vrlo točnih zaključaka o slojevima teksta, koji su dobrim dijelom oko 2000-tih prihvaćeni u međunarodnoj znanosti. Ti zaključci pokazuju da su u Bhagavadgītu u raznim vremenima ugrađivani nazori većega broja filozofskih sustava (sāṃkhya, yoga, pūrvamīmāṃsā, vedānta – monistička i teistička), da su ugrađene i – nerijetko prešutne – polemike s nizom nazora (osobito s buddhizmom – u više navrata – ali i s Vedama, yogom, s monističkom vedāntom i s dharmaśāstrom). Pouke i pobude Gīte veoma su obuhvatne i inovativne jer proizlaze iz mnogobrojnih premisa. Taj ishod analiza teksta s jedne je strane prihvaćen od niza znanstvenika u svijetu (John Brockington, Georg von Simson, Horst Brinkhaus, Gavin Flood, Przemyslaw Szczurek, Ivan Andrijanić, Robert Zydenbos i dr.), ali ga s druge osporavaju neki zapadni postmodernistički religiolozi (Alf Hiltebeitel), kao i neki kolege indijskoga podrijetla senzibilizirani protiv zapadnoga »orijentalizma« i analitičnosti (Vishwa Adluri, Joydeep Bagchi). To što oni ne uočavaju tumačeći Bhagavadgītu može se najbolje oslikati usporedbom s posjetiteljem umjetničkoga spomenika religijske naravi koji se je stoljećima preuređivao, kakva je splitska katedrala. Ako bi takav posjetitelj smatrao da svetost i umjetnička vjerodostojnost spomenika ovisi o tome je li izgrađen odjednom, od jednoga graditelja s jedinstvenom zamišlju, tada ne bi mogao uočiti složen, gdjekada polemičan, bogat i dojmljiv način na koji takav spomenik prenosi svoje poruke. A to je plod duge i složene povijesti splitske katedrale koja je prvo bila mauzolej rimskoga cara, a poslije postala crkvom posvećenom njegovim žrtvama, prolazeći potom kroz niz pregradnja i »reinterpretacija«. U povijesti umjetnosti takve su predrasude rjeđe nego u proučavanju svetih tekstova. Zato prikladan primjer umjetničkoga spomenika religijske naravi, kao što je splitska katedrala Uznesenja B. D. Marije, posvećena i sv. Dujmu i sv. Stašu, može dobro oslikati kako bismo trebali razumjeti književni i filozofski spomenik kao što je Bhagavadgītā, koja je proživjela usporedivo složenu povijest.
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BARTON, ALISTAIR, and NASSIF GHOUSSOUB. "Dynamic and stochastic propagation of the Brenier optimal mass transport." European Journal of Applied Mathematics 30, no. 6 (March 20, 2019): 1264–99. http://dx.doi.org/10.1017/s0956792519000032.
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Similar to how Hopf–Lax–Oleinik-type formula yield variational solutions for Hamilton–Jacobi equations on Euclidean space, optimal mass transportations can sometimes provide variational formulations for solutions of certain mean-field games. We investigate here the particular case of transports that maximize and minimize the following ‘ballistic’ cost functional on phase space TM, which propagates Brenier’s transport along a Lagrangian L, $$b_T(v, x):=\inf\left\{\langle v, \gamma (0)\rangle +\int_0^TL(t, \gamma (t), {\dot \gamma}(t))\, dt; \gamma \in C^1([0, T], M); \gamma(T)=x\right\}\!,$$ where $M = \mathbb{R}^d$, and T >0. We also consider the stochastic counterpart: \begin{align*} \underline{B}_T^s(\mu,\nu):=\inf\left\{\mathbb{E}\left[\langle V,X_0\rangle +\int_0^T L(t, X,\beta(t,X))\,dt\right]\!; X\in \mathcal{A}, V\sim\mu,X_T\sim \nu\right\}\!, \end{align*} where $\mathcal{A}$ is the set of stochastic processes satisfying dX = βX (t, X) dt + dWt, for some drift βX (t, X), and where Wt is σ(Xs: 0 ≤ s ≤ t)-Brownian motion. Both cases lead to Lax–Oleinik-type formulas on Wasserstein space that relate optimal ballistic transports to those associated with dynamic fixed-end transports studied by Bernard–Buffoni and Fathi–Figalli in the deterministic case, and by Mikami–Thieullen in the stochastic setting. While inf-convolution easily covers cost minimizing transports, this is not the case for total cost maximizing transports, which actually are sup-inf problems. However, in the case where the Lagrangian L is jointly convex on phase space, Bolza-type dualities – well known in the deterministic case but novel in the stochastic case – transform sup-inf problems to sup–sup settings. We also write Eulerian formulations and point to links with the theory of mean-field games.
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Avelar, Rafael Linard, Roque Soares Martins Neto, Bruno da Silva Gaspar, Raimundo Antonio de Lima Praxedes Neto, and Paulo Paulo Goberlânio Barros Silva. "Development of temporomandibular ankylosis after diagnosis of Jacob’s disease: clinical and tomographic assessment." ARCHIVES OF HEALTH INVESTIGATION 9, no. 5 (April 20, 2020): 426–28. http://dx.doi.org/10.21270/archi.v9i5.4778.
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Jacob's disease is a rare condition that consists of the formation of a pseudo joint structure between the mandibular coronoid process and the zygomatic bone, resulting in limited mouth opening. The disease is difficult to diagnose and etiology is uncertain. This article describes a clinical case of a 6-year-old child with limited mouth opening, which resulted in the formation of a temporomandibular ankylosis leading to complete immobility due to delayed diagnosis and treatment of the disease. A review of this pathology and the most precise imaging exams are discussed for the early and differential diagnosis of the disease.
Descriptors: Ankylosis; Temporomandibular Joint; Temporomandibular Joint Disorders.
Referências
Wang WH, Xu B, Zhang BJ, Lou HQ. Temporomandibular joint ankylosis contributing to coronoid process hyperplasia. Int J Oral Maxillofac Surg. 2016;45(10):1229-33.
Zhong SC, Xu ZJ, Zhang ZG, Zheng YH, Li TX, Su K. Bilateral coronoid hyperplasia (Jacob disease on right and elongation on left): report of a case and literature review. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2009 Mar;107(3):e64-7.
Coll-Anglada M, Acero-Sanz J, Vila-Masana I, Navarro-Cuéllar C, Ochandiano-Caycoia S, López de-Atalaya J, Navarro-Vila C. Jacob's disease secondary to coronoid process osteochondroma. A case report. Med Oral Patol Oral Cir Bucal. 2011;16(6):e708-10.
Yesildag A, Yariktas M, Doner F, Aydin G, Munduz M, Topal U. Osteochondroma of the coronoid process and joint formation with zygomatic arch (jacob disease): report of a case. Eur J Dent. 2010;4(1):91-4.
Çorumlu U, Kopuz C, Demir MT, Pirzirenli ME. Bilateral elongated mandibular coronoid process in an Anatolian skull. Anat Cell Biol. 2016;49(3):217-20.
Choi JG, Kim SY, Perez-Atayde AR, Padwa BL. Bilateral coronoid process hyperplasia with pseudocartilaginous joint formation: Jacob disease. J Oral Maxillofac Surg. 2013;71(2):316–21.
Losa-Muñoz PM, Burgueño-García M, González-Martín-Moro J, Sánchez-Burgos R. Osteochondroma of coronoid process: a rare etiology of jacob disease. Craniomaxillofac Trauma Reconstr. 2014;7(4):306-9.
Escuder i de la Torre O, Vert Klok E, Marí i Roig A, Mommaerts MY, Pericot i Ayats J. Jacob's disease: report of two cases and review of the literature. J Craniomaxillofac Surg. 2001;29(6):372-76.
Hernández-Alfaro F, Escuder O, Marco V. Joint formation between an osteochondroma of the coronoid process and the zygomatic arch (Jacob disease): report of case and review of literature. J Oral Maxillofac Surg. 2000;58(2):227-32.
Sreeramaneni SK, Chakravarthi PS, Krishna Prasad L, Raja Satish P, Beeram RK. Jacob's disease: report of a rare case and literature review. Int J Oral Maxillofac Surg. 2011;40(7):753-57.
D'Ambrosio N, Kellman RM, Karimi S. Osteochondroma of the coronoid process (Jacob's disease): an unusual cause of restricted jaw motion. Am J Otolaryngol. 2011;32(1):52-4.
Shackelford RT, Brown WH. Restricted jaw motion due to osteochondroma of the coronoid process. J Bone Joint Surg Am. 1949;31A(1):107-14.
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Syaiputra Wahyuda Meisa Diningrat, Luluk Janah, and Sakinatul Mardiyah. "Modified Bottle Cap for Improving Children’s Arithmetic Ability." JPUD - Jurnal Pendidikan Usia Dini 13, no. 2 (December 1, 2019): 249–63. http://dx.doi.org/10.21009/jpud.132.04.
Full textAbstract:
The preliminary study showed that the main problem, however, faced by kindergarten students are lack of mathematics skill, such arithmetic ability in kindergarten Galis. Therefore, the present study aims to investigate the effectiveness of a modified bottle cap as an educational game tool towards enhancement of arithmetic ability. Samples were prepared for the quasi-experiment research design involving 60 children, aged 4-5 years. A detailed comparison is made between the experimental condition, consisted of 30 students, received the educational game tool activities and the control condition which consisted of 30 students, received the instructional activities as usual. Before and after two weeks of the intervention with the game tool of a modified bottle cap, measures of arithmetic ability were administered to either experiment or control class. The results of the study indicated that in the experiment class, children’s arithmetic ability increased significantly compared to children in the control class. The differences may have been due to the intervention. To conclude, the modified bottle cap as an educational game tool effective to improve children’s mathematics skill, especially for arithmetic ability. However, the findings required the extended study on other research methods and the bigger size of the samples.
Keywords: Early Childhood, Modified bottle cap, Early Arithmetic Ability.
References:
Aqib, Zainal. (2010). Belajar dan Pembelajaran di Taman Kanak-Kanak. Bandung: Yrama Widya.
Arsyad, A. (2017). Media Pembelajaran. PT Raja Grafindo Pursada.
Aunio, Pirjo; Tapola, Anna; Mononen; and Niemivirta, M. (2016). Early Mathematics Skill Development, Low Performance, and Parental Support in the Finnish Context. In Blevins-Knabe; A.M.B. Austin (Ed.), Early Childhood Mathematic Skill Development in the home environment. Cham, Switzerland: Springer.
Ayuni, D., & Setiawati, F. A. (2019). Kebun Buah Learning Media for Early Childhood Counting Ability. Jurnal Obsesi : Jurnal Pendidikan Anak Usia Dini, 3(1), 1. https://doi.org/10.31004/obsesi.v3i1.128
Barblett, L., Knaus, M., & Barratt-Pugh, C. (2016). The Pushes and Pulls of Pedagogy in the Early Years: Competing Knowledges and the Erosion of Play-based Learning. Australasian Journal of Early Childhood, 41(4), 36–43. https://doi.org/10.1177/183693911604100405
Barth, H., La Mont, K., Lipton, J., & Spelke, E. S. (2005). Abstract number and arithmetic in preschool children. Proceedings of the National Academy of Sciences of the United States of America, 102(39), 14116–14121. https://doi.org/10.1073/pnas.0505512102
Blevins-Knabe, B. (2016). Early Mathematical Development : How the Home Environment Matters. In Belinda Blevins-Knabe; Ann M. Berghout Austin (Ed.), Early Childhood Mathematics Skill Development in the Home Environment (pp. 8–9). Cham, Swutzerland: Springer.
Copley, J. V. (2016). The Young Child and Mathematics. In M. Hogarty (Ed.), Numbers and Stories: Using Children’s Literature to Teach Young Children Number Sense (Second, pp. 1–14). https://doi.org/10.4135/9781483330907.n1
Depdiknas. (2005). Pedoman Pembelajaran di Taman Kanak-Kanak. Jakarta: Direktorat Pembinaan Taman Kanak-Kanak Sekolah Dasar.
Depdiknas. (2007). Modul Pembuatan dan Penggunaan APE anak Usia 2-6 Tahun. Jakarta: Dirjen Pendidikan Luar Sekolah Direktorat PAUD.
Dunekacke, S., Jenßen, L., Eilerts, K., & Blömeke, S. (2016). Epistemological beliefs of prospective preschool teachers and their relation to knowledge, perception, and planning abilities in the field of mathematics: a process model. ZDM - Mathematics Education, 48(1–2), 125–137. https://doi.org/10.1007/s11858-015-0711-6
Elizabeth, W. (2011). Cross-curricular Teaching to Support Child-initiated Learning in EYFS and KEY Stage I. In Suzanne and Kristine (Ed.), Early Childhood Educaiton: Yesterday, Today, and Tomorrow. New York: Routledge.
Fitri, F., & Syamsudin, A. (2019, May). The Effectiveness of Race Track Games on Counting Ability and Child Learning Motivation. https://doi.org/10.2991/icsie-18.2019.78
Grindheim, L. T. (2017). Children as playing citizens. European Early Childhood Education Research Journal, 25(4), 624–636. https://doi.org/10.1080/1350293X.2017.1331076
Guslinda; Kurnia, R. (2018). Media Pembelajaran Anak Usia Dini. Surabaya: Jakad Publiser.
Harris, B., & Petersen, D. (2017). Developing Math Skills in Early Childhood. Issue Brief. Mathematica Policy Research, Inc., (February), 1–6. Retrieved from http://ezproxy.library.uvic.ca/login?url=http://search.ebscohost.com/login.aspx?direct=true&db=eric&AN=ED587415&site=ehost-live&scope=site
Haskell, S. H. (2000). The determinants of arithmetic skills in young children: Some observations. European Child and Adolescent Psychiatry, 9(SUPPL. 2), 77–86. https://doi.org/10.1007/s007870070011
Hurlock, Elisabeth, B. (1978). Perkembangan Anak, Jilid 2. Jakarta: Erlangga.
Ismail, A. (2006). Education Games “Menjadi Cerdas dan Ceria dengan Permainan Edukatif.”
Jacobi-Vessels, J. L., Todd Brown, E., Molfese, V. J., & Do, A. (2016). Teaching Preschoolers to Count: Effective Strategies for Achieving Early Mathematics Milestones. Early Childhood Education Journal, 44(1), 1–9. https://doi.org/10.1007/s10643-014-0671-4
Johnson, J. E., & Wu, M.-H. (2019). Perspectives on Play in Early Childhood Care and Educaiton. In M. B. Brown, Christopher; McMullen (Ed.), The Wiley Handbook of Early Childhood Care and Education (1st ed., p. 86). New Jersey: John Wiley & Sons.
Kamus Besar Bahasa Indonesia Online. (2019). Retrieved from https://www.kamusbesar.com/prefix/nd
Khasanah, I. (2013). Pembelajaran Logika Matematika Anak Usia Dini (Usia 4-5 Tahun) di TK Ikal Bulog Jakarta Timur. In Jurnal Penelitian PAUDIA (Vol. 2).
Lai, N. K., Ang, T. F., Por, L. Y., & Liew, C. S. (2018). The impact of play on child development - a literature review. European Early Childhood Education Research Journal, 26(5), 625–643. https://doi.org/10.1080/1350293X.2018.1522479
Malapata, E., & Wijayanigsih, L. (2019). Meningkatkan Kemampuan Berhitung Anak Usia 4-5 Tahun melalui Media Lumbung Hitung. Jurnal Obsesi : Jurnal Pendidikan Anak Usia Dini, 3(1), 283. https://doi.org/10.31004/obsesi.v3i1.183
Manjale, N. B., & Abel, C. (2017). Significance and adequacy of instructional media as perceived by primary school pupils and teachers in. 4(6), 151–157.
Martin, R. B., Cirino, P. T., Sharp, C., & Barnes, M. (2014). Number and counting skills in kindergarten as predictors of grade 1 mathematical skills. Learning and Individual Differences, 34, 12–23. https://doi.org/10.1016/j.lindif.2014.05.006
Naz, A. A., & Akbar, R. A. (2010). Use of Media for Effective Instruction its Importance : Some Consideration. Journal of Elementary Education, 18(1–2), 35–40.
OECD. (2019). Mathematics Performance (PISA) 2015. https://doi.org/10.1787/04711c74-en
Papadakis, S., Kalogiannakis, M., & Zaranis, N. (2017). Improving Mathematics Teaching in Kindergarten with Realistic Mathematical Education. Early Childhood Education Journal, 45(3), 369–378. https://doi.org/10.1007/s10643-015-0768-4
Passolunghi, M. C., Cargnelutti, E., & Pellizzoni, S. (2019). The relation between cognitive and emotional factors and arithmetic problem-solving. Educational Studies in Mathematics, 100(3), 271–290. https://doi.org/10.1007/s10649-018-9863-y
Preeti. (2014). Education and role of media in education system. International Journal of Scientific Engineering and Research, 2(3), 174–175.
Rahman, S. (2010). Alat Permainan Edikatif untuk Program PAUD. Palu: Tadulako University Press.
Rohmah, N., & Waluyo, E. (2014). Arithmetic Dice Media as Counting Concept Introduction for Early Childhood. Naili Rohmah & Edi Waluyo / Indonesian Journal of Early Childhood Education Studies, 3(2), 127–133. https://doi.org/10.15294/ijeces.v3i2.9486
Rushton, S. (2011, June). Neuroscience, Early Childhood Education and Play: We are Doing it Right! Early Childhood Education Journal, 39(2), 89–94. https://doi.org/10.1007/s10643-011-0447-z
Schacter, J., & Jo, B. (2017). Improving preschoolers’ mathematics achievement with tablets: a randomized controlled trial. Mathematics Education Research Journal, 29(3), 313–327. https://doi.org/10.1007/s13394-017-0203-9
Schwartz, S. (2005). Teaching YoungChildren Mathematics. Westport, Connecticut: Praeger.
Selvi, K. (2010). Teachers’ competencies. Cultura. International Journal of Philosophy of Culture and Axiology, 7(1), 167–175. https://doi.org/10.5840/cultura20107133
Smaldino, S. E., Russel, J. D., & Lowther, D. L. (2014). Instructional Technology & Media for Learning (9th ed.). Jakarta: Kencana Prenada Media Group.
Suryadi. (2007). Cara Efektif Memahami Perilaku Anak Usia Dini. Jakarta: Edsa Mahkota.
Vogt, F., Hauser, B., Stebler, R., & Rechsteiner, K. (2018). Learning through play – pedagogy and learning outcomes in early childhood mathematics. 1807. https://doi.org/10.1080/1350293X.2018.1487160
Vogt, F., Hauser, B., Stebler, R., Rechsteiner, K., & Urech, C. (2018). Learning through play–pedagogy and learning outcomes in early childhood mathematics. European Early Childhood Education Research Journal, 26(4), 589–603. https://doi.org/10.1080/1350293X.2018.1487160
Wati, E. R. (2016). Ragam Media Pembelajaran (A. Jarot, Ed.). Yogyakarta: Kata Pena.
Zulkardi, N. (2011). Building counting by traditional game: A Mathematics Program for Young Children. IndoMs. J.M.E, 2(1), 41–54.
Dissertations / Theses on the topic "Jacobi B. S"
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Mantoani, Maurício Cruz. "Remoção da gramínea exótica Megathyrsus maximus (Jacq.) B. K. Simon & S. W. L. Jacobs e a regeneração natural em um reflorestamento de 20 anos." Universidade Estadual de Londrina. Centro de Ciências Biológicas. Programa de Pós-Graduação em Ciências Biológicas, 2013. http://www.bibliotecadigital.uel.br/document/?code=vtls000183417.
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Três experimentos foram realizados para estudar as respostas da regeneração e impactos de diferentes técnicas de controle do capim-colonião (Megathyrsus maximus (Jacq.) B. K. Simon & S. W. L. Jacobs) em um reflorestamento de 20 anos. No primeiro e segundo experimentos, 30 parcelas de 10 x 20 m foram instaladas e distribuídas em três grupos com 10 parcelas cada, sendo: controle, roçagem com roçadeiras costais e roçagem seguida da aplicação de Roundup Transorb R ® (glifosato). Foram amostrados todos os indivíduos de espécies lenhosas > 1 m, e para se amostrar indivíduos > 10 cm e < 1 m, duas sub-parcelas de 5 x 5 m foram implantadas em cada parcela. Entretanto, no experimento 1, foram acompanhados somente os indivíduos que estavam previamente marcados antes das remoções de M. maximus, para verificar a mortalidade e os danos à regeneração. No terceiro experimento, 45 parcelas de 5 x 5 m foram instaladas e distribuídas em três grupos com 10 parcelas cada, sendo: controle, remoção manual por um ano e remoção manual por dois anos. Todos os indivíduos de espécies lenhosas > 10 cm foram amostrados. Dados de abundância e riqueza de espécies, cobertura, número de plântulas e banco de sementes de M. maximus, cobertura de dossel, mortalidade e recrutamento foram coletados. No primeiro experimento, não houve diferença entre a mortalidade dos tratamentos de remoção com a mortalidade natural do controle, e somente no tratamento com uso exclusivo de roçadeiras, a abundância e a riqueza de espécies de indivíduos > 1 m permaneceram inalteradas. O custo final do tratamento de roçagem foi 34,1% maior do que o custo do tratamento com herbicida, e mesmo que o custo para se realizar novas intervenções diminua para ambos, há aumento dos custos quando ocorre necessidade de intervenções esparsas em áreas pequenas. No segundo experimento, a quantidade de sementes de capim-colonião foi menor em áreas com maior quantidade de regenerantes e com a melhora da regeneração no controle, não houve diferenças para os três grupos, todavia, as plantas < 1 m sofreram forte redução no tratamento com glifosato. No terceiro experimento, o número de plântulas de capim-colonião diminuiu com as repetidas remoções, e após quatro anos, a abundância total e a riqueza de espécies pioneiras foram maiores nos tratamentos de remoção. A competição com o capim-colonião parece estar associada mais fortemente com outros parâmetros do que com a luz, e com espécies pioneiras. M. maximus é causa da lenta sucessão local, embora esteja sendo suprimida vagarosamente pela vegetação, denotando a importância da estrutura arbórea, da proximidade com o fragmento florestal para chegada de novos indivíduos e do isolamento de fogo da área. As técnicas podem ser usadas para acelerar a sucessão local, entretanto, o uso de glifosato deve ser restrito a áreas com baixa cobertura de dossel no inverno (< 70%), por essas demandarem mais manutenções, e pela técnica ser mais prejudicial à regeneração, pois houve alta mortalidade (73%) de indivíduos < 1 m em áreas com densa infestação (100%).We conducted three experiments to study the responses of regeneration and the impacts of different control techniques on guinea grass (Megathyrsus maximus (Jacq.) B. K. Simon & S. W. L. Jacobs) in a 20-year reforestation site. In the first and second experiments, 30 plots of 10 x 20 m were installed and divided into three groups with 10 plots each: control, mowing with costal trimmers and mowing following Roundup Transorb R ® (glyphosate) application. We sampled all individuals of woody species > 1 m, and to sample individuals > 10 cm and < 1 m, two sub-plots of 5 x 5 m were established in each plot. Only in experiment 1, we accompanied only individuals who were previously marked before the first mowing of M. maximus, for checking the mortality and damage on regeneration by the techniques. In third experiment, 45 plots of 5 x 5 m were installed and divided in three groups with 10 plots each: control, manual weeding for a year and manual weeding for two. All individuals of woody species > 10 cm were sampled. Data like abundance and species richness, cover, number of seedlings and seed bank of M. maximus, canopy cover, recruitment and mortality were collected. In the first experiment, there was no difference between the mortality of removal treatments with natural mortality find in control, and only in the treatment with exclusive use of coastal trimmers, abundance and species richness for individuals > 1 m remained unchanged. The final cost of the mowing treatment was 34.1% higher than the cost of herbicide treatment, and even if the cost to perform new interventions decrease for both, there are increased costs when there is need for interventions scattered over small areas. In second experiment, the amount of guinea grass seeds was lower in areas with more regenerants, and with improved regeneration of control, there were no differences for the three groups, however, plants < 1 m were strongly reduced in glyphosate treatment. In third experiment, the number of guinea grass seedlings decreased with repeated removals, and after four years, the total abundance and pioneer species richness were greater in removal treatments. Competition with M. maximus appears to be associated more strongly with other parameters than light, and with pioneer species. Guinea grass causes the slow succession site, but is being suppressed by the vegetation gradually, emphasizing the importance of the tree structure, proximity to the forest fragment (to arrival of new seedlings) and isolation of the fire. The techniques can be used to accelerate the succession site, however, the use of glyphosate should be restricted to areas with low winter canopy cover (< 70%), as theses demanding more maintenance, and because the technique is more damaging on regeneration, since there was high mortality (73%) of individuals < 1 m in areas with dense infestation (100%).
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Jacobs, Claudia [Verfasser], J. [Gutachter] Prinz, L. [Gutachter] Cerroni, and S. [Gutachter] Jahn. "Untersuchung entfernt lokalisierter Gewebeproben kutaner B-Zell-Lymphome auf intraklonale Diversität mit der Einzel-Zell-PCR-Technik / Claudia Jacobs ; Gutachter: J. Prinz, L. Cerroni, S. Jahn." Berlin : Humboldt-Universität zu Berlin, 2000. http://d-nb.info/1207659193/34.
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Павлова, Галина Вікторівна, and Лариса Петрівна Семененко. "Автографи вчених в книжкової колекції академіка Б. С. Якобі." Thesis, 2019. http://repository.kpi.kharkov.ua/handle/KhPI-Press/41809.
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Книжкова колекція академіка Б. С. Якобі, яка збережена і досліджується в НТБ НТУ "ХПІ", — це новий нестандартний портрет вченого, представлений зібранням книг. Також подана інформація про учених, автографи яких містяться в книгах колекції.The book collection of academician B. S. Jacobi, which is stored and explored in the NTU "KhPI" Scientific and Technical Library, is a new non-standard portrait of a scientist, presented by a collection of books. The article also provides information on scientists whose autographs are contained in the books of the collection.
Books on the topic "Jacobi B. S"
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Schwingungen von Windenergieanlagen 2019. VDI Verlag, 2019. http://dx.doi.org/10.51202/9783181023464.
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Dieser VDI-Bericht ist ausschließlich als PDF-Datei erschienen! Sie möchten gerne erfahren, welche Themen auf der 10. VDI-Fachtagung in Bremen präsentiert wurden? Inhalt Eröffnung Erkenntnisse aus digitalisierten Daten von über 3000 Windenergieanlagen im Betrieb 1 B. Hahn, S. Faulstich, Fraunhofer IEE, Kassel BIG DATA Auswertungen und Analysen von Betriebsdaten I Big Data – Smart Data, analytische Datenauswertung von Betriebsdaten 17 W. Holweger, Schaeffler Technologies AG & Co. KG, Herzogenaurach; F. Harzendorf, B. Azzam, CWD RWTH Aachen University, Aachen; J. Fliege, Universität Southampton, Southampton, UK Felderfahrung von Anlagen und Windparks I MSA (Messsystemanalyse) eines back-to-back Getriebeprüfstands 29 T. Jacob (M.Sc.) (VDI), Flender GmbH, Voerde; M. Blomeyer, Flender GmbH, Bocholt Felderfahrung und Ergebnisse aus großen Windparks: Von der Zuverlässigkeits- und CMS-Analyse zur Prognosefähigkeit 41 S. Mtauweg, V. Meimann, MML Solutions GmbH; H. Fritsch, U.
Book chapters on the topic "Jacobi B. S"
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"CARMINA DUO S. JACOBI SARUGENSIS DE B. M. V." In De Vita et Scriptis Sancti Jacobi, Batnarum Sarugi in Mesopotamia Episcopi, 199–302. Piscataway, NJ, USA: Gorgias Press, 2010. http://dx.doi.org/10.31826/9781463224042-006.
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"n ar eegattaikveenco to rr e im la p ti loynsa , p th hy essieca ‘ ltelliencko nnectio key va between ntphaet te lo rn ca s l ’ w (1 a9s7o2n ). tFhoellpoowiinntgosfoemmeeirngc in on gcilsusc iv oentw ai onrekdbiynoLtahm er bsm Gl aapnstzrioeatblael . a1n9d9t1h ) e . widely distributed one (e.g., see (e.g., by Berlage and DeBoer 1960), Professor Jacob pressure f an pdr ec wiapsi ta atiW on a , l ke te r m produced teleconnection Bjerknes at the University of California at Los modes of interannual blcel im to a te idve perature, and surface Angeles made the key step forward by demonstrating nise today, including the South anerrita if nbyi li tthyethlaatrgweestre scale that the atmospheric teleconnection patterns were North Atlantic O Oscillation and c o th g e p eq a u rt atoof ri aalcPoaucp if liecdOmco ea dneaonfdinttheer ac gtlioobnalbaettmwo ee sp nhteh re e was Inaba le d d to it icoanr ry to scb illation. (Bjerknes 1966, 1969, and 1972). It is now clear that of fortunate circu omuste ing a first-rate scientist, Walker other parts of the global ocean also participate in the the art of statistics htaahn is work because of a confluence Southern Oscillation, manifested through changes in matical tool of the ob d se cdeesv . e F lo ir pset, shortly beforehand, sea surface temperature and the overlying atmos also a very ab rvational dscriaepnicdelsy . aWsaalkm er atwhaes phe B ri ycctih rc e u la la ti toen. 1970s and early 1980s, climate o st fat ti hse ti cIsnd (W ian alM ker le1 99 m7a ) t . h H em av aitn ic giatn ak ewn ho understood scientists were able to document the relationships gained the oppo ertteuonrio ty lo tgoicc al Departme th netijnob19o0f3h , e h ad ehRyap sm ot uhsesso is neda nd byCaB rp je ernktneers 19 in 8 2, mwoh re odd is e c ta uisls ed (e . tgh . e , m re aqtuhierm ed ata ic a la l rg oepesrta aff capab alreryoofupteh rf is orsm tu idniges, m w an h u ic ahlT So hue th ceorunplO ed sco il cleaa ti n o -n a / tEmlosNpihneoreasvaaricao ti uopnlecdenstyrsetdemo ) n . W ve a ry lk p er raw ct ais able to t m io ankseoanmeax jo te rne si f v fo e rt d a to ta so se lv ts e . tShoeE th NeSeO qu a ( t E or l ia NlP in ac o i / f S ic oiustnhoew rn co Omsm cil oln at liyon re ), f er a r ed p h to ra saesA ra n in oftah ll e , rkaencaalcp ti rvoib ty le m th aotfh pr aed dicting Indian monsoon coined in planning documents for the international by the earl yyfyaecatrosrowfasthtehattwietnh sta taidejru te t st dbe in c om th eep1 os 8s7i0 bl s e . Tmreonpti . caDlO ur cienagntG he lo b 1 al 98A0tsmoasnpdh er 1e99 (T 0s OGaAs ) ereix es p er o i flsaurfgfe ic -s ie cnatlence li amr-agtleob va arl ia d ti aotnas . to de hsccre ib n e tu raynd to agnaatlh ys eereom ur p iri ucnadl, e m rs o ta dned ll iinngg , aonfdtthheeo re p ti hcyaslicsa tu l di m es e c in hcarneiassm ed s 192 T3heansdtu1d9 ie 2s4 , bWyaW lk a e lker and others (e.g., Walker aad ss voacnicae te sdinwiutnhdEeN rs S ta O n . diAngdettealielceodndnie sc c u ti sosn io pnao tt ferrencsen in trge lo la b ti aol) nsshuirp fa s ce exp is re te s d su rbeertawnedenB li lsasrg1e9 -s 3c2a ) le s h ( o i. w e. e , d n that the TOGA era (1985-94) can be found in Trenberth patterns -in particular, tphaettIen rn d s ia n an sdum re m gional rain efaarl -l et aTl. h1e 99 i8deanntd if i A ca ll tainone ta o l. f 19 so 9m6. e of the physical v ra aitn io fa nlal. l W ev a id lk eenrc ’s erfeosreatrhcehepxrio st veindceedo th feefr monso an ir osrtgaonbisseorn m rev ec it h a anism ed conne l c is t e io dnsi nt aesrseosct iated with patterns. in A W se a ri lekser’ osENfp SO has st ruedciiepsi ta w ti i o th n g re te alte ly -glo more wHoerbcaal-ls le cda le tpk did no hi tsattthee rn hav Soofuitnh terannual climate variability. complete data sets (e.g., Kiladis and Diaz 1989; expected because, efotrhe re a im e p rn acOt scillatio sons th tahtartemma ig n. htI in unh itia nc alveel ly ar b , e h th einsrReocpoenlfeiw rm sk eida se nvde ra Hlao lp f e th rt et1e9 le 8c6o , nn 1e9c8t7 io , ns ansdu gg 1e9s9 te 2 d ) c so o o rr n e la ptr io ec nispib ta et t w io enenwtehaekepnreed ss uarbeopuatt te th rn esta im nd e m th oene cboynW ne acltkieornsa . ndRootphee le rs w , saknidaindde nt H ifi aeldpeardt di ( t 1 io 9n8a7ltaen le-were discovered. Th y 1989) attempted to improve the usefulness of tele d taitmtehemomsitdodf le thoefetah rl eec tw or ernetliae ti tohncsesnttruernyg , th beuntebdyag th a a in tcdooncnuemce ti notn patterns y work ha ing regions foorfstehaesognlaolbcelitm ha att , eipnreaddidcittiioonnb to y fille Adc in ru c w ia alspaap rt hyosfictahleepxipcltaunrdebteheantfro em rg aoitn ten atio ed . to be a m ls e o re lhyadshroew la itn io gnssh ta itp is stiw ca ilthEN EN SO SO -p rtehca ip t it w at eiroenhliignhklsy , t te hleecSoonuntehcetrinonOp sc aitltleartn io s. n A ju rsetvaisewaonfk fo nrow th leedogbesaeb rv oeudticdoennstiisftieendttfhreom se aespoin so sdaend to reegpiiosn od seo . f T th h e ey g p lo a b rt eicw ul haerr ly physical explanation precipitation was associated with ENSO in at least 75 e." In Droughts, 56. Routledge, 2016. http://dx.doi.org/10.4324/9781315830896-39.
Full textConference papers on the topic "Jacobi B. S"
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Chen, Xiaofei. "Spatial Structure in Chinese and Japanese Cities: A Comparative Study of the Supergrid and Superblock Structure." In 24th ISUF 2017 - City and Territory in the Globalization Age. Valencia: Universitat Politècnica València, 2017. http://dx.doi.org/10.4995/isuf2017.2017.4555.
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Title: Spatial Structure in Chinese and Japanese Cities: A Comparative Study of the Supergrid and Superblock StructureAuthor Name: Xiao Fei Chen Affiliation: Faculty of Architecture Design and Planning, The University of Sydney Address: The Wilkinson Bldg G04, 148 City Rd, Darlington NSW 2008 Email Address: xche3951@Sydney.edu.au Mobile: 61 (02) 0450875226 Keywords: Supergrid and Superblock, Urban Morphology, China and JapanAbstract:Supergrids and Superblocks form an urban structure that extends across large areas of many Chinese and Japanese cities. The grid structures consist of wide roads at a city scale and define Superblocks, each with a network of narrower streets. My paper investigates the form-function interrelationships of these structures from morphological perspectives against a backcloth of theory that stresses an integrated network of streets as the prerequisite for a convenient and synergetic environment, with a specific focus on road/street networks, and mix and distribution of functional activities. Both qualitative and quantitative methods (including space syntax) are used to investigate four Superblocks from two pairs of Chinese and Japanese cities: Xi’an and Kyoto, and Nanjing and Osaka, from three aspects: integration, connection and interaction. Here I focus on the Nanjing-Osaka pair and the findings demonstrate clear but divergent patterns between the two cities, which are indicative of general differences between Chinese and Japanese Superblocks: there are very strong interrelationships between the street network and distribution of activities in the Japanese Superblocks, but these are much less evident in the Chinese Superblocks and this results largely from the extensive Chinese cultural practice of building walls around compounds. It reveals some structural disadvantages, leading to congestion of traffic and functional activities in some strategic locations in Chinese Superblocks. It also highlights some crucial qualities in the structures of many Japanese Superblocks that can provide inspiration for China’s future urban development and possibly for cities in other parts of the world.Reference:Alexander, C. (1965) ‘A city is not a tree’, Architectural Forum 122, 58-62. Ashihara, Y. (1983) The Aesthetic Townscape, US: Massachusetts Institute Technology Press Halliday Lithograph. Bentley et al., (1985) Responsive environments: a manual for designers (London: Architectural Press). Hillier, B. (1996) Space is the machine (Cambridge University Press, Cambridge). Jacobs, J. (1961) The death and life of great American cities (New York: Random House). Marshall, S. (2005) Streets & Patterns, (Spon Press, Taylor & Francis Group). Shelton, B. (2012) Learning from the Japanese City: Looking East in Urban Design (Routledge imprint of Taylor & Francis, London). Zhu, W.Y. (2010) Space, Symbol and City: a Theory of Urban Design (China Architecture & Building Press, Beijing.
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Fong, Jeffrey T., Pedro V. Marcal, Robert Rainsberger, Li Ma, N. Alan Heckert, and James J. Filliben. "Finite Element Method Solution Uncertainty, Asymptotic Solution, and a New Approach to Accuracy Assessment." In ASME 2018 Verification and Validation Symposium. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/vvs2018-9320.
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Errors and uncertainties in finite element method (FEM) computing can come from the following eight sources, the first four being FEM-method-specific, and the second four, model-specific: (1) Computing platform such as ABAQUS, ANSYS, COMSOL, LS-DYNA, etc.; (2) choice of element types in designing a mesh; (3) choice of mean element density or degrees of freedom (d.o.f.) in the same mesh design; (4) choice of a percent relative error (PRE) or the Rate of PRE per d.o.f. on a log-log plot to assure solution convergence; (5) uncertainty in geometric parameters of the model; (6) uncertainty in physical and material property parameters of the model; (7) uncertainty in loading parameters of the model, and (8) uncertainty in the choice of the model. By considering every FEM solution as the result of a numerical experiment for a fixed model, a purely mathematical problem, i.e., solution verification, can be addressed by first quantifying the errors and uncertainties due to the first four of the eight sources listed above, and then developing numerical algorithms and easy-to-use metrics to assess the solution accuracy of all candidate solutions. In this paper, we present a new approach to FEM verification by applying three mathematical methods and formulating three metrics for solution accuracy assessment. The three methods are: (1) A 4-parameter logistic function to find an asymptotic solution of FEM simulations; (2) the nonlinear least squares method in combination with the logistic function to find an estimate of the 95% confidence bounds of the asymptotic solution; and (3) the definition of the Jacobian of a single finite element in order to compute the Jacobians of all elements in a FEM mesh. Using those three methods, we develop numerical tools to estimate (a) the uncertainty of a FEM solution at one billion d.o.f., (b) the gain in the rate of PRE per d.o.f. as the asymptotic solution approaches very large d.o.f.’s, and (c) the estimated mean of the Jacobian distribution (mJ) of a given mesh design. Those three quantities are shown to be useful metrics to assess the accuracy of candidate solutions in order to arrive at a so-called “best” estimate with uncertainty quantification. Our results include calibration of those three metrics using problems of known analytical solutions and the application of the metrics to sample problems, of which no theoretical solution is known to exist.
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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.
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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.
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Mehraban, Arash, Jed Brown, Henry Tufo, Jeremy Thompson, Rezgar Shakeri, and Richard Regueiro. "Efficient Parallel Scalable Matrix-Free 3D High-Order Finite Element Simulation of Neo-Hookean Compressible Hyperelasticity at Finite Strain." In ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-70768.
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Abstract The paper investigates matrix-free high-order implementation of finite element discretization with p-multigrid preconditioning for the compressible Neo-Hookean hyperelasticity problem at finite strain on unstructured 3D meshes in parallel. We consider two formulations for the matrix-free action of the Jacobian in Neo-Hookean hyperelasticity: (i) working in the reference configuration to define the second Piola-Kirchhoff tensor as a function of the Green-Lagrange strain S(E) (or equivalently, the right Cauchy-Green tensor C = I+2E), and (ii) working in the current configuration to define the Kirchhoff stress in terms of the left Cauchy-Green tensor τ(b). The proposed efficient algorithm utilizes the Portable, Extensible Toolkit for Scientific Computation (PETSc), along with the libCEED library for efficient compiler optimized tensor-product-basis computation to demonstrate an efficient nonlinear solution algorithm. We utilize p-multigrid preconditioning on the high-order problem with algebraic multigrid (AMG) on the assembled linear Q1 coarse grid operator. In contrast to classical geometric multigrid, also known as h-multigrid, each level in p-multigrid is related to a different approximation polynomial order p, instead of the element size h. A Chebyshev polynomial smoother is used on each multigrid level. AMG is then applied to the assembled Q1 (trilinear hexahedral elements), which allows low storage that can be efficiently used to accelerate convergence to a solution. For the compressible Neo-Hookean hyperelastic constitutive model we exploit the stored energy density function to compute the stored elastic energy density of the Neo-Hookean material as it relates to the deformation gradient. Based on our formulation, we consider four different algorithms each with different storage strategies. Algorithms 1 and 3 are implemented in the reference and current configurations respectively and store ∇Xξ, det(∇ξX), and ∇Xu. Algorithm 2 in the reference configuration stores, ∇Xξ, det(∇ξX), ∇Xu, C−1, and λ log (J). Algorithm 4, in the current configuration, stores det(∇ξX), ∇xξ, τ, and μ – λ log(J). x refers to the current coordinates, X to the reference coordinates, and ξ to the natural coordinates. We perform 3D bending simulations of a tube composed of aluminum (modulus of elasticity E = 69 GPa, Poisson’s ratio v = 0.3) using unstructured meshes and polynomials of order p = 1 through p = 4 under mesh refinement. We explore accuracy-time-cost tradeoffs for the prediction of strain energy across the range of polynomial degrees and Jacobian representations. In all cases, Algorithm 4 using the current configuration formulation outperforms the other three algorithms and requires less storage. Similar simulations for large deformation compressible Neo-Hookean hyperelasticity as applied to the same aluminum material are conducted with ABAQUS, a commercial finite element software package which is a state-of-the-art engineering software package for finite element simulations involving large deformation. The best results from the proposed implementations and ABAQUS are compared in the case of p = 2 on an Intel system with @2.4 GHz and 128 GB RAM. Algorithm 4 outperforms ABAQUS for polynomial degree p = 2.