1,726,961 research outputs found
DIVI22 : 22. Kongress der Deutschen Interdisziplinären Vereinigung für Intensiv- und Notfallmedizin e.V. : Starke Teams durch Kommunikation! ; 30.11.2022 –02.12.2022, Hamburg: Abstractbuch
No full textRecommended from our members
Dress and overskirt
No full textEnsemble of green and blue paisley cotton.
A) Dress of same has round collar, long sleeves of green/ blue paisley printed chiffon with cotton cuffs; floor length.
Label: Divi-Divi / Cursou
B) Overskirt of green/ blue paisley printed chiffon with wide cotton waist band. Bow at center front; floor length. Open at front from waistband to hem
Dress and overskirt
No full textEnsemble of green and blue paisley cotton.
A) Dress of same has round collar, long sleeves of green/ blue paisley printed chiffon with cotton cuffs; floor length.
Label: Divi-Divi / Cursou
B) Overskirt of green/ blue paisley printed chiffon with wide cotton waist band. Bow at center front; floor length. Open at front from waistband to hem
Scan-based immersed isogeometric analysis
No full textScan-based simulations contain innate topologically complex three-dimensional geometries, represented by large data sets in formats which are not directly suitable for analysis. Consequently, performing high-fidelity scan-based simulations at practical computational costs is still very challenging. The main objective of this dissertation is to develop an efficient and robust scan-based simulation strategy by acquiring a profound understanding of three prominent challenges in scan-based IGA, viz.: i) balancing the accuracy and computational effort associated with numerical integration; ii) the preservation of topology in the spline-based segmentation procedure; and iii) the control of accuracy using error estimation and adaptivity techniques.
In three-dimensional immersed isogeometric simulations, the computational effort associated with integration can be the critical component. A myriad of integration strategies has been proposed over the past years to ameliorate the difficulties associated with integration, but a general optimal integration framework that suits a broad class of engineering problems is not yet available. In this dissertation we provide a thorough investigation of the accuracy and computational effort of the octree integration technique. We quantify the contribution of the integration error using the theoretical basis provided by Strang’s first lemma. Based on this study we propose an error-estimate-based adaptive integration procedure for immersed IGA.
To exploit the advantageous properties of IGA in a scan-based setting, it is important to extract a smooth geometry. This can be established by convoluting the voxel data using B-splines, but this can induce problematic topological changes when features with a size similar to that of the voxels are encountered. This dissertation presents a topology-preserving segmentation procedure using truncated hierarchical (TH)B-splines. A moving-window-based topological anomaly detection algorithm is proposed to identify regions in which (TH)B-spline refinements must be performed. The criterion to identify topological anomalies is based on the Euler characteristic, giving it the capability to distinguish between topological and shape changes. A Fourier analysis is presented to explain the effectiveness of the developed procedure.
An additional computational challenge in the context of immersed IGA is the construction of optimal approximations using locally refined splines. For scan-based volumetric domains, hierarchical splines are particularly suitable, as they optimally leverage the advantages offered by the availability of a geometrically simple background mesh. Although truncated hierarchical B-splines have been successfully applied in the context of IGA, their application in the immersed setting is largely unexplored. In this dissertation we propose a computational strategy for the application of error estimation-based mesh adaptivity for stabilized immersed IGA.
The conducted analyses and developed computational techniques for scan-based immersed IGA are interrelated, and together constitute a significant improvement in the efficiency and robustness of the analysis paradigm. In combination with other state-of-the-art developments regarding immersed FEM/IGA (\emph{e.g.}, iterative solution techniques, parallel computing), the research in this thesis opens the doors to scan-based simulations with more sophisticated physical behavior, geometries of increased complexity, and larger scan-data sizes.Scan-based simulations contain innate topologically complex three-dimensional geometries, represented by large data sets in formats which are not directly suitable for analysis. Consequently, performing high-fidelity scan-based simulations at practical computational costs is still very challenging. The main objective of this dissertation is to develop an efficient and robust scan-based simulation strategy by acquiring a profound understanding of three prominent challenges in scan-based IGA, viz.: i) balancing the accuracy and computational effort associated with numerical integration; ii) the preservation of topology in the spline-based segmentation procedure; and iii) the control of accuracy using error estimation and adaptivity techniques.
In three-dimensional immersed isogeometric simulations, the computational effort associated with integration can be the critical component. A myriad of integration strategies has been proposed over the past years to ameliorate the difficulties associated with integration, but a general optimal integration framework that suits a broad class of engineering problems is not yet available. In this dissertation we provide a thorough investigation of the accuracy and computational effort of the octree integration technique. We quantify the contribution of the integration error using the theoretical basis provided by Strang’s first lemma. Based on this study we propose an error-estimate-based adaptive integration procedure for immersed IGA.
To exploit the advantageous properties of IGA in a scan-based setting, it is important to extract a smooth geometry. This can be established by convoluting the voxel data using B-splines, but this can induce problematic topological changes when features with a size similar to that of the voxels are encountered. This dissertation presents a topology-preserving segmentation procedure using truncated hierarchical (TH)B-splines. A moving-window-based topological anomaly detection algorithm is proposed to identify regions in which (TH)B-spline refinements must be performed. The criterion to identify topological anomalies is based on the Euler characteristic, giving it the capability to distinguish between topological and shape changes. A Fourier analysis is presented to explain the effectiveness of the developed procedure.
An additional computational challenge in the context of immersed IGA is the construction of optimal approximations using locally refined splines. For scan-based volumetric domains, hierarchical splines are particularly suitable, as they optimally leverage the advantages offered by the availability of a geometrically simple background mesh. Although truncated hierarchical B-splines have been successfully applied in the context of IGA, their application in the immersed setting is largely unexplored. In this dissertation we propose a computational strategy for the application of error estimation-based mesh adaptivity for stabilized immersed IGA.
The conducted analyses and developed computational techniques for scan-based immersed IGA are interrelated, and together constitute a significant improvement in the efficiency and robustness of the analysis paradigm. In combination with other state-of-the-art developments regarding immersed FEM/IGA (\emph{e.g.}, iterative solution techniques, parallel computing), the research in this thesis opens the doors to scan-based simulations with more sophisticated physical behavior, geometries of increased complexity, and larger scan-data sizes
dwi; divi
No full textdwy158. It was suggested by both Mr. Thomas and Mrs. Driscoll that this term probably comes from "dwi" or "dwies", which are intermittent snow flurries.W.J. KIRWIN APR 1973 JH APR 1973[Probably when typing 'divi' on the questionnaire the writing was difficult to decipher and the typist mistook 'dwi' for 'divi' - JH]Used INot usedNot usedThe word 'dwi' is written above the word form 'divi' on this card. The editor's note regarding a possible typist error can be applied to D_15005, D_15004, D_15003 as well
Maracaibo (Venezuela), plantation of divi-divi trees used in the leather industry
No full textZulia, MaracaiboPlantation of divi-divi trees. Road between Maracaibo and La Pua. [These trees are grown for their seeds, which contain tannic acid, used in tanning.]GrayscaleBox
Título: Tractatus longae magnae juxta miram angelis et divi Thomae doctrina
No full textPreceden unos himnos impresos en Zaragoza, en 1730Con: Tractatus longae magnae juxta miram angelis et divi Thomae doctrina. 42 hojas e índice de los dos tratadosLetra del siglo XVII
Divi Pavli Ad Titvm Epistola Sancta
No full textDIVI PAVLI AD TITVM EPISTOLA SANCTA
Divi Pavli Ad Titvm Epistola Sancta ( - )
Title page ( - )
Bonarum literarum studiosis Ioan: Langus ER. Augustinianus S. ἐν πράττειν. ( - )
Divi Pavli Ad Titvm Epistola. ( - )
C. S. Quales presbyteros constituere debeat: & quo modo mali sint increpandi Titum apostolus instruit. Caput Primu[m]. ( - )
C. S. Titum docet ut iuuenes: senes: & seruos erudiat. Caput Secu[n]du[m]. ( - )
C. S. Quomodo populus se habeat erga principes: similiter erga hæreticos apostolus Titum docet. Caput Terciu[m]. ( - )
Imprint ( -
Winston Churchill’s Divi Britannici (1675) and archipelagic royalism
No full textDivi Britannici (1675) is a major restoration history that deserves to be more widely known. The work’s author, Sir Winston Churchill (1620-1688), is certainly less well-known than his celebrated descendant of the same name. Seldom mentioned in discussions of seventeenth-century historiography, Divi Britannici can be read alongside contemporary histories, including John Milton’s History of Britain (1670). If British historians have generally overlooked Divi Britannici then Churchill’s work did come to the notice of Michel Foucault, who recognized its arguments around conquest, rights and sovereignty as crucial to the development of political thought in the period. In this essay we excavate Churchill’s arguments, sift through the scattered critical legacy, and locate Divi Britannici both within the context of Restoration histories, with their warring interpretations of England and Britain’s past, and within a tradition of British historiography that associates monarchical rule with national stability. What scholars have missed, however, is the propensity of Churchill to align the restored Stuart monarchy with a form of ethnic co-operation between Scotland, Ireland and England, designed to counter the perceived divisions which were exacerbated by the policies of Cromwell and the parliamentarians
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