119,708 research outputs found
Emil Seidel Papers, 1906-1940, Box 1, Folder 12, H. Schwarzmann letter to Emil Seidel, 1933
No full textEmil Seidel Papers, 1906-1940, Box 1, Folder 11, Algernon Lee and Bertha H. Mailly letter to Emil Seidel, 1913
No full textMilwaukee (Wis.), Mayor: Records of the Emil Seidel Administration, 1910-1912, Box 1, Folder 3, Edward H. Reisner letter to Emil Seidel, 1910
No full textStructure and Regulation of plant vacuolar H+-ATPase
No full textSeidel T. Structure and Regulation of plant vacuolar H+-ATPase. Progress in Botany. 2008;70:93-126
A New Preconditioner on Gauss‐Seidel Method for H‐Matrices
Full text linkIn order to accelerate the convergency of Gauss‐Seidel method to solve systems of linear equations when the coefficient matrix is an H‐matrix, a new preconditioner is introduced. The convergency of the new preconditioned method is proved
A triangulation method for approximation with Dahmen Micchelli Seidel Splines
No full textThe DMS Spline - developed by W. Dahmen, C. A. Micchelli and H. P. Seidel - is a generalisation of the Schoenberg Splines into the multivariate Euklidean Space. This paper is about approximation with that spline in the bivariate case. Especially a triangulation algorithm is developed which computes a triangulation and also the knots of that triangulation. In each triangle of the triangulation a minimum and a maximum of the number of data is guaranteed. The approximation takes place over these data
Der DMS-Spline, entwickelt von W. Dahmen, C. A. Micchelli und H. P. Seidel, ist eine Verallgemeinerung des Schoenberg-Splines ins Multivariate. Diese Arbeit beschaftigt sich mit der Approximation dieses Splines im Bivariaten. Insbesondere wird ein Triangulierungsalgorithmus entwickelt, der sowohl die zu triangulierenden Knoten, als auch die Triangulierung bestimmt. In jedem Dreieck der Triangulierung wird eine Minimal- und eine Maximalanzahl an Daten garantiert, in denen Funktionswerte zu approximieren sin
Den frühen Todt Ihres besten Freundes des Hochedlen und Wohlgelahrten Herrn Johann Friederich Bernhard Keck Beider Rechte eifrigst Beflissenen besingen mit äuserster Wehmuht O. Gesenius, aus Zellerfeld. J. G. A. Kipping, aus Bareuth. L. H. L. Papen, aus Wolffenbüttel. F. J. Roepke, aus dem Braunschweigischen. A. C. Schrodt, aus Braunschweig. J. H. Schrodt, aus Braunschweig. C. M. Seidel, aus dem Braunschw. J. A. Seidel, aus dem Braunschw.
No full textConvergence on Gauss-Seidel iterative methods for linear systems with general H-matrices
No full textIt is well known that as a famous type of iterative methods in numerical linear algebra, Gauss-Seidel iterative methods are convergent for linear systems with strictly or irreducibly diagonally dominant matrices, invertible H−matrices (generalized strictly diagonally dominant matrices) and Hermitian positive definite matrices. But, the same is not necessarily true for linear systems with non-strictly diagonally dominant matrices and general H−matrices. This paper firstly proposes some necessary and sufficient conditions for convergence on Gauss-Seidel iterative methods to establish several new theoretical results on linear systems with nonstrictly diagonally dominant matrices and general H−matrices. Then, the convergence results on preconditioned Gauss-Seidel (PGS) iterative methods for general H−matrices are presented. Finally, some numerical examples are given to demonstrate the results obtained in this paper
Inca neglectus Sousa & Seidel 2021, sp. nov.
No full textInca neglectus sp. nov. urn:lsid:zoobank.org:act: 21C602CA-DB1D-41A4-8BCA-5A2DC0E227FD Figs 1F–J, Q, 2E–H, N, 3B, E, 4B Differential diagnosis Inca neglectus sp. nov. is very similar to I. axeli sp. nov. in that both species have clypeal horns in males with dorsolateral tooth long and acute (short and rounded in I. irroratus), posterior angles of pronotum acute (rounded in I. irroratus), medial area of elytra with large waxy maculae (absent in I. irroratus), and posterior tooth of protibia long and acute (short and rounded in I. irroratus). Inca neglectus sp. nov. has the inner dorsal carina of clypeal horns gradually interrupted (abruptly interrupted at apex in I. axeli sp. nov.) and the outer distal process of parameres long and rounded (long and acuminate in I. axeli sp. nov. and short and rounded in I. irroratus) (see Table 2). Etymology The species epithet comes from the Latin word ‘ neglectus ’ referring to the species being neglected taXonomically since Burmeister first described it, but did not name it, in 1847. Material examined Holotype BRAZIL – Rio de Janeiro • 1 ♂; “Bras. [Brasil], Nov. Frib. [Nova Friburgo], Bske [Bescke] leg., 54, irroratus Ch. Gor. & P, HOLOTYPE, Inca neglectus, sp. nov., det. Sousa & Seidel 2020”; MLUH. Paratypes (6 ♂♂ and 4 ♀♀) BRAZIL – Espirito Santo • 1 ♂; “Brasil, Espirito Santo, EX col. Visc. Bonvouloir, Inca irroratus Chevr. (?), Burm., 1847 (not 1842), G.J.Arrow det., Brit. Mus. 1946-356”; BMNH. – Minas Gerais • 1 ♂; Ouro Preto; 27 Dec. 1998; F. Ohaus leg.; MZSP. – Rio de Janeiro • 1 ♀; “Bras. [Brasil], Nov. Frib. [Nova Friburgo], Bske [Bescke] leg., irroratus Ch. Gor. & P.”; MLUH • 1 ♂, 1 ♀; “Bras. [Brasil], Bske [Bescke] leg., irroratus Ch. Gor. & P”; MLUH • 1 ♂; Nova Friburgo, Garrafão, Cascatinha, 23 Mar. 2003; UFRPE • 1 ♀; same locality as for preceding; 6 Apr. 2002; UFRPE • 1 ♀; same locality as for preceding; Mar. 1999; R. Vassalo leg., “Coleção F. & P. Grossi”; UFRPE • 1 ♂; same locality as for preceding; 27 Mar. 2004; R. Vassalo leg.; UFRPE • 1 ♂; Petropolis; “21.7.947 [21 Jul. 1947], Luiz P. Leite, Coll. IRSNB, Inca besckei Schaum; ex coll J. ROUCH, I.G.: 32.703”; RBINS. Paratypes are labelled with “ PARATYPE; Inca neglectus; sp. nov.; det. Sousa & Seidel, 2020”. Description Holotype (male) BODY (Fig. 1I–H [=images of almost identical paratype]). Total length including clypeal horns 42.0 mm; width across humeri 17.0 mm. COLOUR. Reddish brown with dark green heterogeneous spots, dorsal surface with weak green and orange metallic reflections; legs and meso- and metathoraX with reddish brown bright colour (Fig. 1F– H, Q). HEAD. Surface of frons with dark green and dark reddish-brown waxy secretion; clypeal horns with anterior area of inner dorsal carina gradually interrupted at apex; dorsolateral tooth long and acute (Fig. 1Q). THORAX. Lateral margin of pronotum strongly sinuous; lateromedial area with elongated and irregular fovea; longitudinal groove well marked; posterior angles acute (Fig. 1I–H). Anterior prosternal process acute, projected and densely setose in the median area; can be acute or rounded and little or strongly projected. Anterolateral area of scutellar plate punctate. Elytra little maculated with light yellow waxy maculae covering all surface (Fig. 1F). LEGS. Posterior tooth of protibia long and acute (Fig. 3B). Mesempodium with 2 setae. ABDOMEN. Fovea of sternite VII strongly marked. Disc of pygidium densely punctate, lateral area with well-defined punctures. TERMINALIA. Aedeagus: outer distal process of parameres long and rounded (Fig. 1I–J). MORPHOLOGICAL VARIATIONS (males). Body length 33−42 mm, width 14−17 mm. Head. In brachycerous specimens the dorsolateral tooth can be rounded and reduced in size. Female BODY (Fig. 2E–G). Length 40–42 mm; width across humeri 16–18 mm. Colour of waxy secretion of elytra surface varies from reddish brown to dark reddish brown with waxy maculae that can vary from light yellow to gold yellow colour. Type locality Nova Friburgo, Rio de Janeiro State, Brazil. Distribution Brazil: Espírito Santo, Minas Gerais (Ouro Preto) and Rio de Janeiro (Nova Friburgo) states (Fig. 5). Remarks Burmeister (1847) described and diagnosed this species under I. irroratus. After careful examination of morphological evidence we conclude that the real I. irroratus is actually what Burmeister identified as his new species I. burmeisteri, leaving this species unnamed. The specimens listed in ‘additional material’ under I. burmeisteri in Seidel et al. (2018) belong to I. neglectus sp. nov.Published as part of Sousa, Rafael & Seidel, Matthias, 2021, Review of the Inca irroratus species group with description of two new species of Inca LePeletier & Serville, 1828 (Coleoptera, Scarabaeidae, Cetoniinae), pp. 15-35 in European Journal of Taxonomy 748 (1) on pages 26-27, DOI: 10.5852/ejt.2021.748.1335, http://zenodo.org/record/473612
Modelling the response of the spinal system to whole-body vibration and repeated shock
No full textBack problems are very common and contribute to discomfort and days off work. Some back disorders are attributed to inappropriate loading of the spine that can be combined with other influential factors such a body posture, whole-body vibration and shock. Many models have been developed to predict the forces in the spine associated with vibration and shock. However, the problem is complex due to the incompletely understood dynamic responses of the body, the influence of many variables and the effect of muscle forces.This paper summarises the current state of knowledge relevant to the prediction of forces in the spine associated with whole-body vibration and shock. The paper also introduces presentations at a workshop on the modelling of spinal loads associated with vibration and shock held in Berlin in October 1999.Relevance: Biodynamic models may be used to estimate risks of injury or disease and optimise environments so as to minimise risks. However, the development of useful models requires an understanding of the complex interaction between mechanical forces and the living body. The application of models requires knowledge of their accuracy and limitation
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