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101

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Far-field polarization signatures of surface optical nonlinearity in noncentrosymmetric semiconductors (2020)

Pakhomov, Anton ; Löchner, Franz ; Zschiedrich, Lin ; [weitere]

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Publikationsdatum: 2021-08-03

Sprache: Englisch

Materialart: article , doc-type:article

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102

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Macroscale mesenchymal condensation to study cytokine-driven cellular and matrix-related changes during cartilage degradation (2020)

Weber, Marie-Christin ; Fischer, Lisa ; Damerau, Alexandra ; [weitere]

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Publikationsdatum: 2021-03-05

Beschreibung: Understanding the pathophysiological processes of cartilage degradation requires adequate model systems to develop therapeutic strategies towards osteoarthritis (OA). Although different in vitro or in vivo models have been described, further comprehensive approaches are needed to study specific disease aspects. This study aimed to combine in vitro and in silico modeling based on a tissue-engineering approach using mesenchymal condensation to mimic cytokine-induced cellular and matrix-related changes during cartilage degradation. Thus, scaffold-free cartilage-like constructs (SFCCs) were produced based on self-organization of mesenchymal stromal cells (mesenchymal condensation) and i) characterized regarding their cellular and matrix composition or secondly ii) treated with interleukin-1β (IL-1β) and tumor necrosis factor α (TNFα) for 3 weeks to simulate OA-related matrix degradation. In addition, an existing mathematical model based on partial differential equations was optimized and transferred to the underlying settings to simulate distribution of IL-1β, type II collagen degradation and cell number reduction. By combining in vitro and in silico methods, we aim to develop a valid, efficient alternative approach to examine and predict disease progression and effects of new therapeutics.

Sprache: Englisch

Materialart: article , doc-type:article

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103

Unbekannt

Adaptive reconstruction of imperfectly-observed monotone functions, with applications to uncertainty quantification (2020)

Bonnet, Luc ; Akian, Jean-Luc ; Savin, Éric ; [weitere]

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Publikationsdatum: 2021-10-28

Beschreibung: Motivated by the desire to numerically calculate rigorous upper and lower bounds on deviation probabilities over large classes of probability distributions, we present an adaptive algorithm for the reconstruction of increasing real-valued functions. While this problem is similar to the classical statistical problem of isotonic regression, the optimisation setting alters several characteristics of the problem and opens natural algorithmic possibilities. We present our algorithm, establish sufficient conditions for convergence of the reconstruction to the ground truth, and apply the method to synthetic test cases and a real-world example of uncertainty quantification for aerodynamic design.

Sprache: Englisch

Materialart: article , doc-type:article

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104

Unbekannt

Metasurface enhanced sensitized photon upconversion: towards highly efficient low power upconversion applications and nano-scale E-field sensors (2020)

Würth, Christian ; Manley, Phillip ; Voigt, Robert ; [weitere]

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Publikationsdatum: 2020-09-14

Sprache: Englisch

Materialart: article , doc-type:article

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105

Unbekannt

Optimal Connected Subgraphs: Formulations and Algorithms (2020)

Rehfeldt, Daniel ; Franz, Henriette ; Koch, Thorsten

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Publikationsdatum: 2021-04-16

Sprache: Englisch

Materialart: reportzib , doc-type:preprint

Format: application/pdf

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106

Unbekannt

On the Unreasonable Effectiveness of the Greedy Algorithm: Greedy Adapts to Sharpness (2020)

Pokutta, Sebastian ; Singh, M. ; Torrico, A.

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Publikationsdatum: 2021-02-23

Sprache: Englisch

Materialart: conferenceobject , doc-type:conferenceObject

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107

Unbekannt

Locally Accelerated Conditional Gradients (2020)

Diakonikolas, Jelena ; Carderera, Alejandro ; Pokutta, Sebastian

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Publikationsdatum: 2021-03-26

Sprache: Englisch

Materialart: conferenceobject , doc-type:conferenceObject

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108

Unbekannt

Restarting Algorithms: Sometimes there is Free Lunch (2020)

Pokutta, Sebastian

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Publikationsdatum: 2021-02-23

Sprache: Englisch

Materialart: conferenceobject , doc-type:conferenceObject

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109

Unbekannt

The confined primal integral: a measure to benchmark heuristic MINLP solvers against global MINLP solvers (2020)

Csizmadia, Zsolt ; Berthold, Timo (Dr.)

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Publikationsdatum: 2022-03-14

Beschreibung: It is a challenging task to fairly compare local solvers and heuristics against each other and against global solvers. How does one weigh a faster termination time against a better quality of the found solution? In this paper, we introduce the confined primal integral, a new performance measure that rewards a balance of speed and solution quality. It emphasizes the early part of the solution process by using an exponential decay. Thereby, it avoids that the order of solvers can be inverted by choosing an arbitrarily large time limit. We provide a closed analytic formula to compute the confined primal integral a posteriori and an incremental update formula to compute it during the run of an algorithm. For the latter, we show that we can drop one of the main assumptions of the primal integral, namely the knowledge of a fixed reference solution to compare against. Furthermore, we prove that the confined primal integral is a transitive measure when comparing local solves with different final solution values. Finally, we present a computational experiment where we compare a local MINLP solver that uses certain classes of cutting planes against a solver that does not. Both versions show very different tendencies w.r.t. average running time and solution quality, and we use the confined primal integral to argue which of the two is the preferred setting.

Sprache: Englisch

Materialart: article , doc-type:article

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110

Unbekannt

An exact high performance solver for Steiner tree problems in graphs and related problems (2020)

Koch, Thorsten (Prof. Dr.) ; Rehfeldt, Daniel ; Shinano, Yuji

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Publikationsdatum: 2021-02-22

Sprache: Englisch

Materialart: bookpart , doc-type:bookPart

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111

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The Restricted Modulo Network Simplex Method for Integrated Periodic Timetabling and Passenger Routing (2020)

Löbel, Fabian ; Lindner, Niels ; Borndörfer, Ralf

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Publikationsdatum: 2022-03-14

Beschreibung: The Periodic Event Scheduling Problem is a well-studied NP-hard problem with applications in public transportation to find good periodic timetables. Among the most powerful heuristics to solve the periodic timetabling problem is the modulo network simplex method. In this paper, we consider the more difficult version with integrated passenger routing and propose a refined integrated variant to solve this problem on real-world-based instances.

Sprache: Englisch

Materialart: conferenceobject , doc-type:conferenceObject

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112

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The relative contributions of infectious and mitotic spread to HTLV-1 persistence (2020)

Laydon, Daniel J. ; Sunkara, Vikram ; Boelen, Lies ; [weitere]

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Publikationsdatum: 2021-02-05

Sprache: Englisch

Materialart: article , doc-type:article

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113

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An exploratory computational analysis of dual degeneracy in mixed-integer programming (2020)

Gamrath, Gerald ; Berthold, Timo (Dr.) ; Salvagnin, Domenico

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Publikationsdatum: 2022-03-14

Beschreibung: Dual degeneracy, i.e., the presence of multiple optimal bases to a linear programming (LP) problem, heavily affects the solution process of mixed integer programming (MIP) solvers. Different optimal bases lead to different cuts being generated, different branching decisions being taken and different solutions being found by primal heuristics. Nevertheless, only a few methods have been published that either avoid or exploit dual degeneracy. The aim of the present paper is to conduct a thorough computational study on the presence of dual degeneracy for the instances of well-known public MIP instance collections. How many instances are affected by dual degeneracy? How degenerate are the affected models? How does branching affect degeneracy: Does it increase or decrease by fixing variables? Can we identify different types of degenerate MIPs? As a tool to answer these questions, we introduce a new measure for dual degeneracy: the variable–constraint ratio of the optimal face. It provides an estimate for the likelihood that a basic variable can be pivoted out of the basis. Furthermore, we study how the so-called cloud intervals—the projections of the optimal face of the LP relaxations onto the individual variables—evolve during tree search and the implications for reducing the set of branching candidates.

Sprache: Englisch

Materialart: article , doc-type:article

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114

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Bounding the final rank during a round robin tournament with integer programming (2020)

Gotzes, Uwe ; Hoppmann-Baum, Kai

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Publikationsdatum: 2021-04-20

Beschreibung: This article is mainly motivated by the urge to answer two kinds of questions regarding the Bundesliga, which is Germany’s primary football (soccer) division having the highest average stadium attendance worldwide: “At any point in the season, what is the lowest final rank a certain team can achieve?” and “At any point in the season, what is the highest final rank a certain team can achieve?”. Although we focus on the Bundesliga in particular, the integer programming formulations we introduce to answer these questions can easily be adapted to a variety of other league systems and tournaments.

Sprache: Englisch

Materialart: article , doc-type:article

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115

Unbekannt

Markov Chain Importance Sampling - a highly efficient estimator for MCMC (2020)

Klebanov, Ilja (PhD) ; Schuster, Ingmar (PhD)

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Publikationsdatum: 2021-07-06

Beschreibung: Markov chain (MC) algorithms are ubiquitous in machine learning and statistics and many other disciplines. Typically, these algorithms can be formulated as acceptance rejection methods. In this work we present a novel estimator applicable to these methods, dubbed Markov chain importance sampling (MCIS), which efficiently makes use of rejected proposals. For the unadjusted Langevin algorithm, it provides a novel way of correcting the discretization error. Our estimator satisfies a central limit theorem and improves on error per CPU cycle, often to a large extent. As a by-product it enables estimating the normalizing constant, an important quantity in Bayesian machine learning and statistics.

Sprache: Englisch

Materialart: article , doc-type:article

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116

Unbekannt

Finite-size corrections for the static structure factor of a liquid slab with open boundaries (2020)

Höfling, Felix (Prof. Dr.) ; Dietrich, Siegfried (Prof. Dr.)

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Publikationsdatum: 2021-02-23

Beschreibung: The presence of a confining boundary can modify the local structure of a liquid markedly. In addition, small samples of finite size are known to exhibit systematic deviations of thermodynamic quantities relative to their bulk values. Here, we consider the static structure factor of a liquid sample in slab geometry with open boundaries at the surfaces, which can be thought of as virtually cutting out the sample from a macroscopically large, homogeneous fluid. This situation is a relevant limit for the interpretation of grazing-incidence diffraction experiments at liquid interfaces and films. We derive an exact, closed expression for the slab structure factor, with the bulk structure factor as the only input. This shows that such free boundary conditions cause significant differences between the two structure factors, in particular, at small wavenumbers. An asymptotic analysis of this result yields the scaling exponent and an accurate, useful approximation of these finite-size corrections. Furthermore, the open boundaries permit the interpretation of the slab as an open system, supporting particle exchange with a reservoir. We relate the slab structure factor to the particle number fluctuations and discuss conditions under which the subvolume of the slab represents a grand canonical ensemble with chemical potential μ and temperature T. Thus, the open slab serves as a test-bed for the small-system thermodynamics in a μT reservoir. We provide a microscopically justified and exact result for the size dependence of the isothermal compressibility. Our findings are corroborated by simulation data for Lennard-Jones liquids at two representative temperatures.

Sprache: Englisch

Materialart: article , doc-type:article

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117

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Projection-Free Optimization on Uniformly Convex Sets (2020)

Kerdreux, Thomas ; d'Aspremont, Alexandre ; Pokutta, Sebastian

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Publikationsdatum: 2021-10-26

Sprache: Englisch

Materialart: conferenceobject , doc-type:conferenceObject

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118

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Stand-alone quantum dot-based single-photon source operating at telecommunication wavelengths (2020)

Musial, Anna ; Zolnacz, Kinga ; Srocka, Nicole ; [weitere]

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Publikationsdatum: 2022-06-13

Sprache: Englisch

Materialart: conferenceobject , doc-type:conferenceObject

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119

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Modal expansion of optical far-field quantities using quasinormal modes (2020)

Binkowski, Felix ; Betz, Fridtjof ; Colom, Rémi ; [weitere]

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Publikationsdatum: 2022-06-13

Sprache: Englisch

Materialart: conferenceobject , doc-type:conferenceObject

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120

Unbekannt

Quasi-normal mode expansion as a tool for the design of nanophotonic devices (2020)

Colom, Rémi ; Binkowski, Felix ; Betz, Fridtjof ; [weitere]

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Publikationsdatum: 2022-06-13

Sprache: Englisch

Materialart: conferenceobject , doc-type:conferenceObject

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121

Unbekannt

Investigation and application of contour integral methods for resonance expansion in nanophotonics (2020)

Betz, Fridtjof

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Publikationsdatum: 2022-06-13

Sprache: Englisch

Materialart: masterthesis , doc-type:masterThesis

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122

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Modeling Optical Materials at the Single Scatterer Level: The Transition from Homogeneous to Heterogeneous Materials (2020)

Werdehausen, Daniel ; Santiago, Xavier Garcia ; Burger, Sven ; [weitere]

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Publikationsdatum: 2022-06-13

Sprache: Englisch

Materialart: article , doc-type:article

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123

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Bayesian optimization with improved scalability and derivative information for efficient design of nanophotonic structures (2020)

Santiago, Xavier Garcia ; Burger, Sven ; Rockstuhl, Carsten ; [weitere]

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Publikationsdatum: 2022-06-13

Sprache: Englisch

Materialart: article , doc-type:article

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124

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Front Cover: Plug&Play Fiber‐Coupled 73 kHz Single‐Photon Source Operating in the Telecom O‐Band (Adv. Quantum Technol. 6/2020) (2020)

Musiał, Anna ; Żołnacz, Kinga ; Srocka, Nicole ; [weitere]

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Publikationsdatum: 2022-06-13

Sprache: Englisch

Materialart: other , doc-type:Other

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125

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Extracting dimensional parameters of gratings produced with self-aligned multiple patterning using grazing-incidence small-angle x-ray scattering [Source Code] (2020)

Pflüger, Mika ; Kline, R Joseph ; Fernández Herrero, Analía ; [weitere]

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Publikationsdatum: 2022-06-13

Sprache: Englisch

Materialart: researchdata , doc-type:ResearchData

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126

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Leveraging a Heterogeneous Memory System for a Legacy Fortran Code: The Interplay of Storage Class Memory, DRAM and OS (2020)

Christgau, Steffen (Dr.) ; Steinke, Thomas (Dr.)

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Publikationsdatum: 2022-06-13

Beschreibung: Large capacity Storage Class Memory (SCM) opens new possibilities for workloads requiring a large memory footprint. We examine optimization strategies for a legacy Fortran application on systems with an heterogeneous memory configuration comprising SCM and DRAM. We present a performance study for the multigrid solver component of the large-eddy simulation framework PALM for different memory configurations with large capacity SCM. An important optimization approach is the explicit assignment of storage locations depending on the data access characteristic to take advantage of the heterogeneous memory configuration. We are able to demonstrate that an explicit control over memory locations provides better performance compared to transparent hardware settings. As on aforementioned systems the page management by the OS appears as critical performance factor, we study the impact of different huge page settings.

Sprache: Englisch

Materialart: conferenceobject , doc-type:conferenceObject

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127

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On enhanced sensing of chiral molecules in optical cavities (2020)

Scott, Philip ; Santiago, Xavier Garcia ; Beutel, Dominik ; [weitere]

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Publikationsdatum: 2022-06-13

Sprache: Englisch

Materialart: article , doc-type:article

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128

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Nanophotonics for Solar Energy (2020)

Becker, Christiane ; Jäger, Klaus ; Burger, Sven

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Publikationsdatum: 2022-06-13

Sprache: Englisch

Materialart: other , doc-type:Other

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129

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Boosting Frank-Wolfe by Chasing Gradients (2020)

Combettes, Cyrille W. ; Pokutta, Sebastian

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Publikationsdatum: 2022-06-27

Sprache: Englisch

Materialart: conferenceobject , doc-type:conferenceObject

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130

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Hot electrons generated in chiral plasmonic nanocrystals as a mechanism for surface photochemistry and chiral growth (2020)

Khorashad, Larousse Khosravi ; Besteiro, Lucas V. ; Correa-Duarte, Miguel ; [weitere]

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Publikationsdatum: 2022-06-27

Sprache: Englisch

Materialart: article , doc-type:article

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131

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Minimum Cycle Partition with Length Requirements (2020)

Hoppmann-Baum, Kai ; Mexi, Gioni ; Burdakov, Oleg ; [weitere]

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Publikationsdatum: 2022-06-27

Beschreibung: In this article we introduce a Minimum Cycle Partition Problem with Length Requirements (CPLR). This generalization of the Travelling Salesman Problem (TSP) originates from routing Unmanned Aerial Vehicles (UAVs). Apart from nonnegative edge weights, CPLR has an individual critical weight value associated with each vertex. A cycle partition, i.e., a vertex disjoint cycle cover, is regarded as a feasible solution if the length of each cycle, which is the sum of the weights of its edges, is not greater than the critical weight of each of its vertices. The goal is to find a feasible partition, which minimizes the number of cycles. In this article, a heuristic algorithm is presented together with a Mixed Integer Programming (MIP) formulation of CPLR. We furthermore introduce a conflict graph, whose cliques yield valid constraints for the MIP model. Finally, we report on computational experiments conducted on TSPLIB-based test instances.

Sprache: Englisch

Materialart: bookpart , doc-type:bookPart

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132

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Multi-dimensional modeling and simulation of semiconductor nanophotonic devices (2020)

Kantner, Markus ; Höhne, Theresa ; Koprucki, Thomas ; [weitere]

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Publikationsdatum: 2022-07-07

Sprache: Englisch

Materialart: bookpart , doc-type:bookPart

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133

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Endo-Sim2Real: Consistency learning-based domain adaptation for instrument segmentation (2020)

Sahu, Manish ; Strömsdörfer, Ronja ; Mukhopadhyay, Anirban ; [weitere]

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Publikationsdatum: 2022-07-19

Beschreibung: Surgical tool segmentation in endoscopic videos is an important component of computer assisted interventions systems. Recent success of image-based solutions using fully-supervised deep learning approaches can be attributed to the collection of big labeled datasets. However, the annotation of a big dataset of real videos can be prohibitively expensive and time consuming. Computer simulations could alleviate the manual labeling problem, however, models trained on simulated data do not generalize to real data. This work proposes a consistency-based framework for joint learning of simulated and real (unlabeled) endoscopic data to bridge this performance generalization issue. Empirical results on two data sets (15 videos of the Cholec80 and EndoVis'15 dataset) highlight the effectiveness of the proposed Endo-Sim2Real method for instrument segmentation. We compare the segmentation of the proposed approach with state-of-the-art solutions and show that our method improves segmentation both in terms of quality and quantity.

Sprache: Englisch

Materialart: conferenceobject , doc-type:conferenceObject

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134

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Making spherical-harmonics-based Geometric Morphometrics (SPHARM) approachable for 3D images containing large cavity openings using Ambient Occlusion - a study using hermit crab claw shape variability (2020)

Ege, Yannic ; Foth, Christian ; Baum, Daniel ; [weitere]

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Publikationsdatum: 2022-07-19

Beschreibung: An advantageous property of mesh-based geometric morphometrics (GM) towards landmark-based approaches, is the possibility of precisely examining highly irregular shapes and highly topographic surfaces. In case of spherical-harmonics-based GM the main requirement is a completely closed mesh surface, which often is not given, especially when dealing with natural objects. Here we present a methodological workflow to prepare 3D segmentations containing large cavity openings for the conduction of spherical-harmonics-based GM. This will be exemplified with a case study on claws of hermit crabs (Paguroidea, Decapoda, Crustacea), whereby joint openings – between manus and “movable finger” – typify the large-cavity-opening problem. We found a methodology including an ambient-occlusion-based segmentation algorithm leading to results precise and suitable to study the inter- and intraspecific differences in shape of hermit crab claws. Statistical analyses showed a significant separation between all examined diogenid and pagurid claws, whereas the separation between all left and right claws did not show significance. Additionally, the procedure offers other benefits. It is easy to reproduce and creates sparse variance in the data, closures integrate smoothly into the total structures and the algorithm saves a significant amount of time.

Sprache: Englisch

Materialart: article , doc-type:article

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135

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Surgical phase recognition by learning phase transitions (2020)

Sahu, Manish ; Szengel, Angelika ; Mukhopadhyay, Anirban ; [weitere]

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Publikationsdatum: 2022-07-19

Beschreibung: Automatic recognition of surgical phases is an important component for developing an intra-operative context-aware system. Prior work in this area focuses on recognizing short-term tool usage patterns within surgical phases. However, the difference between intra- and inter-phase tool usage patterns has not been investigated for automatic phase recognition. We developed a Recurrent Neural Network (RNN), in particular a state-preserving Long Short Term Memory (LSTM) architecture to utilize the long-term evolution of tool usage within complete surgical procedures. For fully automatic tool presence detection from surgical video frames, a Convolutional Neural Network (CNN) based architecture namely ZIBNet is employed. Our proposed approach outperformed EndoNet by 8.1% on overall precision for phase detection tasks and 12.5% on meanAP for tool recognition tasks.

Sprache: Englisch

Materialart: article , doc-type:article

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Bi-invariant Two-Sample Tests in Lie Groups for Shape Analysis (2020)

Hanik, Martin ; Hege, Hans-Christian ; von Tycowicz, Christoph

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Publikationsdatum: 2022-07-19

Beschreibung: We propose generalizations of the T²-statistics of Hotelling and the Bhattacharayya distance for data taking values in Lie groups. A key feature of the derived measures is that they are compatible with the group structure even for manifolds that do not admit any bi-invariant metric. This property, e.g., assures analysis that does not depend on the reference shape, thus, preventing bias due to arbitrary choices thereof. Furthermore, the generalizations agree with the common definitions for the special case of flat vector spaces guaranteeing consistency. Employing a permutation test setup, we further obtain nonparametric, two-sample testing procedures that themselves are bi-invariant and consistent. We validate our method in group tests revealing significant differences in hippocampal shape between individuals with mild cognitive impairment and normal controls.

Sprache: Englisch

Materialart: conferenceobject , doc-type:conferenceObject

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Analyzing laparoscopic cholecystectomy with deep learning: automatic detection of surgical tools and phases (2020)

Sahu, Manish ; Szengel, Angelika ; Mukhopadhyay, Anirban ; [weitere]

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Publikationsdatum: 2022-07-19

Beschreibung: Motivation: The ever-rising volume of patients, high maintenance cost of operating rooms and time consuming analysis of surgical skills are fundamental problems that hamper the practical training of the next generation of surgeons. The hospitals prefer to keep the surgeons busy in real operations over training young surgeons for obvious economic reasons. One fundamental need in surgical training is the reduction of the time needed by the senior surgeon to review the endoscopic procedures performed by the young surgeon while minimizing the subjective bias in evaluation. The unprecedented performance of deep learning ushers the new age of data-driven automatic analysis of surgical skills. Method: Deep learning is capable of efficiently analyzing thousands of hours of laparoscopic video footage to provide an objective assessment of surgical skills. However, the traditional end-to-end setting of deep learning (video in, skill assessment out) is not explainable. Our strategy is to utilize the surgical process modeling framework to divide the surgical process into understandable components. This provides the opportunity to employ deep learning for superior yet automatic detection and evaluation of several aspects of laparoscopic cholecystectomy such as surgical tool and phase detection. We employ ZIBNet for the detection of surgical tool presence. ZIBNet employs pre-processing based on tool usage imbalance, a transfer learned 50-layer residual network (ResNet-50) and temporal smoothing. To encode the temporal evolution of tool usage (over the entire video sequence) that relates to the surgical phases, Long Short Term Memory (LSTM) units are employed with long-term dependency. Dataset: We used CHOLEC 80 dataset that consists of 80 videos of laparoscopic cholecystectomy performed by 13 surgeons, divided equally for training and testing. In these videos, up to three different tools (among 7 types of tools) can be present in a frame. Results: The mean average precision of the detection of all tools is 93.5 ranging between 86.8 and 99.3, a significant improvement (p 〈0.01) over the previous state-of-the-art. We observed that less frequent tools like Scissors, Irrigator, Specimen Bag etc. are more related to phase transitions. The overall precision (recall) of the detection of all surgical phases is 79.6 (81.3). Conclusion: While this is not the end goal for surgical skill analysis, the development of such a technological platform is essential toward a data-driven objective understanding of surgical skills. In future, we plan to investigate surgeon-in-the-loop analysis and feedback for surgical skill analysis.

Sprache: Englisch

Materialart: other , doc-type:Other

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D’Arcy W. Thompson’s Cartesian transformations: a critical evaluation (2020)

Scholtz, Gerhard ; Knötel, David ; Baum, Daniel

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Publikationsdatum: 2022-07-19

Beschreibung: The images of D’Arcy Wentworth Thompson’s book “On Growth and Form” got an iconic status and became influential for biometrics and other mathematical approaches to organismic form. In particular, this is true for those of the chapter on the theory of transformation, which even has an impact on art and humanities. Based on his approach, Thompson formulated far-reaching conclusions with a partly anti-Darwinian stance. Here, we use the example of Thompson’s transformation of crab carapaces to test to what degree the transformation of grids, landmarks, and shapes result in congruent images. For comparison, we applied the same series of tests to digitized carapaces of real crabs. Both approaches show similar results. Only the simple transformations show a reasonable form of congruence. In particular, the transformations to majoid spider crabs reveal a complicated transformation of grids with partly crossing lines. By contrast, the carapace of the lithodid species is relatively easily created despite the fact that it is no brachyuran, but evolved a spider crab-like shape convergently from a hermit crab ancestor.

Sprache: Englisch

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Nonlinear Regression on Manifolds for Shape Analysis using Intrinsic Bézier Splines (2020)

Hanik, Martin ; Hege, Hans-Christian ; Hennemuth, Anja (Prof. Dr.-Ing.) ; [weitere]

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Publikationsdatum: 2022-07-19

Beschreibung: Intrinsic and parametric regression models are of high interest for the statistical analysis of manifold-valued data such as images and shapes. The standard linear ansatz has been generalized to geodesic regression on manifolds making it possible to analyze dependencies of random variables that spread along generalized straight lines. Nevertheless, in some scenarios, the evolution of the data cannot be modeled adequately by a geodesic. We present a framework for nonlinear regression on manifolds by considering Riemannian splines, whose segments are Bézier curves, as trajectories. Unlike variational formulations that require time-discretization, we take a constructive approach that provides efficient and exact evaluation by virtue of the generalized de Casteljau algorithm. We validate our method in experiments on the reconstruction of periodic motion of the mitral valve as well as the analysis of femoral shape changes during the course of osteoarthritis, endorsing Bézier spline regression as an effective and flexible tool for manifold-valued regression.

Sprache: Englisch

Materialart: conferenceobject , doc-type:conferenceObject

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Image analysis pipeline for segmentation of a biological porosity network, the lacuno-canalicular system in stingray tesserae (2020)

Schotte, Merlind ; Chaumel, Júlia ; Dean, Mason N. ; [weitere]

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Publikationsdatum: 2022-07-19

Beschreibung: A prerequisite for many analysis tasks in modern comparative biology is the segmentation of 3-dimensional (3D) images of the specimens being investigated (e.g. from microCT data). Depending on the specific imaging technique that was used to acquire the images and on the image resolution, different segmentation tools will be required. While some standard tools exist that can often be applied for specific subtasks, building whole processing pipelines solely from standard tools is often difficult. Some tasks may even necessitate the implementation of manual interaction tools to achieve a quality that is sufficient for the subsequent analysis. In this work, we present a pipeline of segmentation tools that can be used for the semi-automatic segmentation and quantitative analysis of voids in tissue (i.e. internal structural porosity). We use this pipeline to analyze lacuno-canalicular networks in stingray tesserae from 3D images acquired with synchrotron microCT. * The first step of this processing pipeline, the segmentation of the tesserae, was performed using standard marker-based watershed segmentation. The efficient processing of the next two steps, that is, the segmentation of all lacunae spaces belonging to a specific tessera and the separation of these spaces into individual lacunae required modern, recently developed tools. * For proofreading, we developed a graph-based interactive method that allowed us to quickly split lacunae that were accidentally merged, and to merge lacunae that were wrongly split. * Finally, the tesserae and their corresponding lacunae were subdivided into anatomical regions of interest (structural wedges) using a semi- manual approach.

Sprache: Englisch

Materialart: reportzib , doc-type:preprint

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Co-aligned chondrocytes: Zonal morphological variation and structured arrangement of cell lacunae in tessellated cartilage (2020)

Chaumel, Júlia ; Schotte, Merlind ; Bizzarro, Joseph J. ; [weitere]

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Publikationsdatum: 2022-07-19

Beschreibung: In most vertebrates the embryonic cartilaginous skeleton is replaced by bone during development. During this process, cartilage cells (chondrocytes) mineralize the extracellular matrix and undergo apoptosis, giving way to bone cells (osteocytes). In contrast, sharks and rays (elasmobranchs) have cartilaginous skeletons throughout life, where only the surface mineralizes, forming a layer of tiles (tesserae). Elasmobranch chondrocytes, unlike those of other vertebrates, survive cartilage mineralization and are maintained alive in spaces (lacunae) within tesserae. However, the function(s) of the chondrocytes in the mineralized tissue remain unknown. Applying a custom analysis workflow to high-resolution synchrotron microCT scans of tesserae, we characterize the morphologies and arrangements of stingray chondrocyte lacunae, using lacunar morphology as a proxy for chondrocyte morphology. We show that the cell density is comparable in unmineralized and mineralized tissue from our study species and that cells maintain the similar volume even when they have been incorporated into tesserae. This discovery supports previous hypotheses that elasmobranch chondrocytes, unlike those of other taxa, do not proliferate, hypertrophy or undergo apoptosis during mineralization. Tessera lacunae show zonal variation in their shapes—being flatter further from and more spherical closer to the unmineralized cartilage matrix and larger in the center of tesserae— and show pronounced organization into parallel layers and strong orientation toward neighboring tesserae. Tesserae also exhibit local variation in lacunar density, with the density considerably higher near pores passing through the tesseral layer, suggesting pores and cells interact (e.g. that pores contain a nutrient source). We hypothesize that the different lacunar types reflect the stages of the tesserae formation process, while also representing local variation in tissue architecture and cell function. Lacunae are linked by small passages (canaliculi) in the matrix to form elongate series at the tesseral periphery and tight clusters in the center of tesserae, creating a rich connectivity among cells. The network arrangement and the shape variation of chondrocytes in tesserae indicate that cells may interact within and between tesserae and manage mineralization differently from chondrocytes in other vertebrates, perhaps performing analogous roles to osteocytes in bone.

Sprache: Englisch

Materialart: article , doc-type:article

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Characterization of the Airflow within an Average Geometry of the Healthy Human Nasal Cavity (2020)

Brüning, Jan (M.Sc.) ; Hildebrandt, Thomas (Dr.) ; Heppt, Werner (Prof. Dr.) ; [weitere]

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Publikationsdatum: 2022-07-19

Beschreibung: This study’s objective was the generation of a standardized geometry of the healthy nasal cavity. An average geometry of the healthy nasal cavity was generated using a statistical shape model based on 25 symptom-free subjects. Airflow within the average geometry and these geometries was calculated using fluid simulations. Integral measures of the nasal resistance, wall shear stresses (WSS) and velocities were calculated as well as cross-sectional areas (CSA). Furthermore, individual WSS and static pressure distributions were mapped onto the average geometry. The average geometry featured an overall more regular shape that resulted in less resistance, reduced wall shear stresses and velocities compared to the median of the 25 geometries. Spatial distributions of WSS and pressure of average geometry agreed well compared to the average distributions of all individual geometries. The minimal CSA of the average geometry was larger than the median of all individual geometries (83.4 vs. 74.7 mm²). The airflow observed within the average geometry of the healthy nasal cavity did not equal the average airflow of the individual geometries. While differences observed for integral measures were notable, the calculated values for the average geometry lay within the distributions of the individual parameters. Spatially resolved parameters differed less prominently.

Sprache: Englisch

Materialart: article , doc-type:article

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Time-Space Trade-Offs for Computing Euclidean Minimum Spanning Trees (2020)

Banyassady, Bahareh (Dr.) ; Barba, Luis (Dr.) ; Mulzer, Wolfgang (Dr.)

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Publikationsdatum: 2022-07-19

Beschreibung: We present time-space trade-offs for computing the Euclidean minimum spanning tree of a set S of n point-sites in the plane. More precisely, we assume that S resides in a random-access memory that can only be read. The edges of the Euclidean minimum spanning tree EMST(S) have to be reported sequentially, and they cannot be accessed or modified afterwards. There is a parameter s in {1, ..., n} so that the algorithm may use O(s) cells of read-write memory (called the workspace) for its computations. Our goal is to find an algorithm that has the best possible running time for any given s between 1 and n. We show how to compute EMST(S) in O(((n^3)/(s^2)) log s) time with O(s) cells of workspace, giving a smooth trade-off between the two best-known bounds O(n^3) for s = 1 and O(n log n) for s = n. For this, we run Kruskal's algorithm on the "relative neighborhood graph" (RNG) of S. It is a classic fact that the minimum spanning tree of RNG(S) is exactly EMST(S). To implement Kruskal's algorithm with O(s) cells of workspace, we define s-nets, a compact representation of planar graphs. This allows us to efficiently maintain and update the components of the current minimum spanning forest as the edges are being inserted.

Sprache: Englisch

Materialart: article , doc-type:article

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144

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Co-aligned chondrocytes: Zonal morphological variation and structured arrangement of cell lacunae in tessellated cartilage (2020)

Chaumel, Júlia ; Schotte, Merlind ; Bizzarro, Joseph J. ; [weitere]

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Publikationsdatum: 2022-07-19

Beschreibung: In most vertebrates the embryonic cartilaginous skeleton is replaced by bone during development. During this process, cartilage cells (chondrocytes) mineralize the extracellular matrix and undergo apoptosis, giving way to bone cells (osteocytes). In contrast, sharks and rays (elasmobranchs) have cartilaginous skeletons throughout life, where only the surface mineralizes, forming a layer of tiles (tesserae). Elasmobranch chondrocytes, unlike those of other vertebrates, survive cartilage mineralization and are maintained alive in spaces (lacunae) within tesserae. However, the function(s) of the chondrocytes in the mineralized tissue remain unknown. Applying a custom analysis workflow to high-resolution synchrotron microCT scans of tesserae, we characterize the morphologies and arrangements of stingray chondrocyte lacunae, using lacunar morphology as a proxy for chondrocyte morphology. We show that the cell density is comparable in unmineralized and mineralized tissue from our study species and that cells maintain the similar volume even when they have been incorporated into tesserae. This discovery supports previous hypotheses that elasmobranch chondrocytes, unlike those of other taxa, do not proliferate, hypertrophy or undergo apoptosis during mineralization. Tessera lacunae show zonal variation in their shapes—being flatter further from and more spherical closer to the unmineralized cartilage matrix and larger in the center of tesserae— and show pronounced organization into parallel layers and strong orientation toward neighboring tesserae. Tesserae also exhibit local variation in lacunar density, with the density considerably higher near pores passing through the tesseral layer, suggesting pores and cells interact (e.g. that pores contain a nutrient source). We hypothesize that the different lacunar types reflect the stages of the tesserae formation process, while also representing local variation in tissue architecture and cell function. Lacunae are linked by small passages (canaliculi) in the matrix to form elongate series at the tesseral periphery and tight clusters in the center of tesserae, creating a rich connectivity among cells. The network arrangement and the shape variation of chondrocytes in tesserae indicate that cells may interact within and between tesserae and manage mineralization differently from chondrocytes in other vertebrates, perhaps performing analogous roles to osteocytes in bone.

Sprache: Englisch

Materialart: reportzib , doc-type:preprint

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Sperm-specific meiotic chromosome segregation in C. elegans (2020)

Fabig, Gunar ; Kiewisz, Robert ; Lindow, Norbert ; [weitere]

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Publikationsdatum: 2022-07-19

Sprache: Englisch

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Making spherical-harmonics-based Geometric Morphometrics (SPHARM) approachable for 3D images containing large cavity openings using Ambient Occlusion - a study using hermit crab claw shape variability (2020)

Ege, Yannic ; Foth, Christian ; Baum, Daniel ; [weitere]

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Publikationsdatum: 2022-07-19

Beschreibung: An advantageous property of mesh-based geometric morphometrics (GM) towards landmark-based approaches, is the possibility of precisely examining highly irregular shapes and highly topographic surfaces. In case of spherical-harmonics-based GM the main requirement is a completely closed mesh surface, which often is not given, especially when dealing with natural objects. Here we present a methodological workflow to prepare 3D segmentations containing large cavity openings for the conduction of spherical-harmonics-based GM. This will be exemplified with a case study on claws of hermit crabs (Paguroidea, Decapoda, Crustacea), whereby joint openings – between manus and “movable finger” – typify the large-cavity-opening problem. We found a methodology including an ambient-occlusion-based segmentation algorithm leading to results precise and suitable to study the inter- and intraspecific differences in shape of hermit crab claws. Statistical analyses showed a significant separation between all examined diogenid and pagurid claws, whereas the separation between all left and right claws did not show significance. Additionally, the procedure offers other benefits. It is easy to reproduce and creates sparse variance in the data, closures integrate smoothly into the total structures and the algorithm saves a significant amount of time.

Sprache: Englisch

Materialart: reportzib , doc-type:preprint

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Semi-automatic stitching of filamentous structures in image stacks from serial-section electron tomography (2020)

Lindow, Norbert ; Brünig, Florian ; Dercksen, Vincent J. ; [weitere]

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Publikationsdatum: 2022-07-19

Beschreibung: We present a software-assisted workflow for the alignment and matching of filamentous structures across a 3D stack of serial images. This is achieved by combining automatic methods, visual validation, and interactive correction. After an initial alignment, the user can continuously improve the result by interactively correcting landmarks or matches of filaments. Supported by a visual quality assessment of regions that have been already inspected, this allows a trade-off between quality and manual labor. The software tool was developed to investigate cell division by quantitative 3D analysis of microtubules (MTs) in both mitotic and meiotic spindles. For this, each spindle is cut into a series of semi-thick physical sections, of which electron tomograms are acquired. The serial tomograms are then stitched and non-rigidly aligned to allow tracing and connecting of MTs across tomogram boundaries. In practice, automatic stitching alone provides only an incomplete solution, because large physical distortions and a low signal-to-noise ratio often cause experimental difficulties. To derive 3D models of spindles despite the problems related to sample preparation and subsequent data collection, semi-automatic validation and correction is required to remove stitching mistakes. However, due to the large number of MTs in spindles (up to 30k) and their resulting dense spatial arrangement, a naive inspection of each MT is too time consuming. Furthermore, an interactive visualization of the full image stack is hampered by the size of the data (up to 100 GB). Here, we present a specialized, interactive, semi-automatic solution that considers all requirements for large-scale stitching of filamentous structures in serial-section image stacks. The key to our solution is a careful design of the visualization and interaction tools for each processing step to guarantee real-time response, and an optimized workflow that efficiently guides the user through datasets.

Sprache: Englisch

Materialart: article , doc-type:article

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Scattering and phase-contrast X-ray methods reveal damage to glass fibers in endodontic posts following dental bur trimming (2020)

Soares, Ana Prates ; Baum, Daniel ; Hesse, Bernhard ; [weitere]

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Publikationsdatum: 2022-07-19

Sprache: Englisch

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Quantitative PA tomography of high resolution 3-D images: experimental validation in tissue phantoms (2020)

Buchmann, Jens ; Kaplan, Bernhard ; Powell, Samuel ; [weitere]

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Publikationsdatum: 2022-07-19

Beschreibung: Quantitative photoacoustic tomography aims recover the spatial distribution of absolute chromophore concentrations and their ratios from deep tissue, high-resolution images. In this study, a model-based inversion scheme based on a Monte-Carlo light transport model is experimentally validated on 3-D multispectral images of a tissue phantom acquired using an all-optical scanner with a planar detection geometry. A calibrated absorber allowed scaling of the measured data during the inversion, while an acoustic correction method was employed to compensate the effects of limited view detection. Chromophore- and fluence-dependent step sizes and Adam optimization were implemented to achieve rapid convergence. High resolution 3-D maps of absolute concentrations and their ratios were recovered with high accuracy. Potential applications of this method include quantitative functional and molecular photoacoustic tomography of deep tissue in preclinical and clinical studies.

Sprache: Englisch

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In-situ defect detection in laser powder bed fusion by using thermography and optical tomography – comparison to computed tomography (2020)

Mohr, Gunther ; Altenburg, Simon J. ; Ulbricht, Alexander ; [weitere]

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Publikationsdatum: 2022-07-19

Sprache: Englisch

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Geodesic Analysis in Kendall's Shape Space with Epidemiological Applications (2020)

Nava-Yazdani, Esfandiar ; Hege, Hans-Christian ; Sullivan, T. J. ; [weitere]

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Publikationsdatum: 2022-07-19

Beschreibung: We analytically determine Jacobi fields and parallel transports and compute geodesic regression in Kendall’s shape space. Using the derived expressions, we can fully leverage the geometry via Riemannian optimization and thereby reduce the computational expense by several orders of magnitude over common, nonlinear constrained approaches. The methodology is demonstrated by performing a longitudinal statistical analysis of epidemiological shape data. As an example application we have chosen 3D shapes of knee bones, reconstructed from image data of the Osteoarthritis Initiative (OAI). Comparing subject groups with incident and developing osteoarthritis versus normal controls, we find clear differences in the temporal development of femur shapes. This paves the way for early prediction of incident knee osteoarthritis, using geometry data alone.

Sprache: Englisch

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Image analysis pipeline for segmentation of a biological porosity network, the lacuno-canalicular system in stingray tesserae (2020)

Schotte, Merlind ; Chaumel, Júlia ; Dean, Mason N. ; [weitere]

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Publikationsdatum: 2022-07-19

Beschreibung: A prerequisite for many analysis tasks in modern comparative biology is the segmentation of 3-dimensional (3D) images of the specimens being investigated (e.g. from microCT data). Depending on the specific imaging technique that was used to acquire the images and on the image resolution, different segmentation tools will be required. While some standard tools exist that can often be applied for specific subtasks, building whole processing pipelines solely from standard tools is often difficult. Some tasks may even necessitate the implementation of manual interaction tools to achieve a quality that is sufficient for the subsequent analysis. In this work, we present a pipeline of segmentation tools that can be used for the semi-automatic segmentation and quantitative analysis of voids in tissue (i.e. internal structural porosity). We use this pipeline to analyze lacuno-canalicular networks in stingray tesserae from 3D images acquired with synchrotron microCT. * The first step of this processing pipeline, the segmentation of the tesserae, was performed using standard marker-based watershed segmentation. The efficient processing of the next two steps, that is, the segmentation of all lacunae spaces belonging to a specific tessera and the separation of these spaces into individual lacunae required modern, recently developed tools. * For proofreading, we developed a graph-based interactive method that allowed us to quickly split lacunae that were accidentally merged, and to merge lacunae that were wrongly split. * Finally, the tesserae and their corresponding lacunae were subdivided into anatomical regions of interest (structural wedges) using a semi- manual approach.

Sprache: Englisch

Materialart: article , doc-type:article

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A comparative description of the mesosomal musculature in Sphecidae and Ampulicidae (Hymenoptera, Apoidea) using 3D techniques (2020)

Willsch, Maraike ; Friedrich, Frank ; Baum, Daniel ; [weitere]

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Publikationsdatum: 2022-07-19

Beschreibung: Conflicting hypotheses about the relationships among the major lineages of aculeate Hymenoptera clearly show the necessity of detailed comparative morphological studies. Using micro-computed tomography and 3D reconstructions, the skeletal musculature of the meso- and metathorax and the first and second abdominal segment in Apoidea are described. Females of Sceliphron destillatorium, Sphex (Fernaldina) lucae (both Sphecidae), and Ampulex compressa (Ampulicidae) were examined. The morphological terminology provided by the Hymenoptera Anatomy Ontology is used. Up to 42 muscles were found. The three species differ in certain numerical and structural aspects. Ampulicidae differs significantly from Sphecidae in the metathorax and the anterior abdomen. The metapleural apodeme and paracoxal ridge are weakly developed in Ampulicidae, which affect some muscular structures. Furthermore, the muscles that insert on the coxae and trochanters are broader and longer in Ampulicidae. A conspicuous characteristic of Sphecidae is the absence of the metaphragma. Overall, we identified four hitherto unrecognized muscles. Our work suggests additional investigations on structures discussed in this paper.

Sprache: Englisch

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Automated Virtual Reconstruction of Large Skull Defects using Statistical Shape Models and Generative Adversarial Networks (2020)

Pimentel, Pedro ; Szengel, Angelika ; Ehlke, Moritz ; [weitere]

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Publikationsdatum: 2022-07-19

Beschreibung: We present an automated method for extrapolating missing regions in label data of the skull in an anatomically plausible manner. The ultimate goal is to design patient-speci� c cranial implants for correcting large, arbitrarily shaped defects of the skull that can, for example, result from trauma of the head. Our approach utilizes a 3D statistical shape model (SSM) of the skull and a 2D generative adversarial network (GAN) that is trained in an unsupervised fashion from samples of healthy patients alone. By � tting the SSM to given input labels containing the skull defect, a First approximation of the healthy state of the patient is obtained. The GAN is then applied to further correct and smooth the output of the SSM in an anatomically plausible manner. Finally, the defect region is extracted using morphological operations and subtraction between the extrapolated healthy state of the patient and the defective input labels. The method is trained and evaluated based on data from the MICCAI 2020 AutoImplant challenge. It produces state-of-the art results on regularly shaped cut-outs that were present in the training and testing data of the challenge. Furthermore, due to unsupervised nature of the approach, the method generalizes well to previously unseen defects of varying shapes that were only present in the hidden test dataset.

Sprache: Englisch

Materialart: article , doc-type:article

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155

Unbekannt

Jerash Silver Scroll: Virtually Unfolded Volume (2020)

Baum, Daniel ; Herter, Felix ; Lepper, Verena

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Publikationsdatum: 2022-09-22

Beschreibung: A new virtual unfolding technique was applied to a silver scroll excavated in Jerash, Jordan, in 2014. As result of the unfolding, 17 lines of writing are clearly visible in the unfolded volumetric data that is published here.

Sprache: Englisch

Materialart: researchdata , doc-type:ResearchData

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156

Unbekannt

Stochastic Dynamics in Computational Biology (2020)

Winkelmann, Stefanie (Dr) ; Schütte, Christof (Prof. Dr)

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Publikationsdatum: 2022-11-28

Sprache: Englisch

Materialart: book , doc-type:book

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157

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Single molecule mu-opioid receptor membrane-dynamics reveal agonist-specific dimer formation with super-resolved precision (2020)

Möller, Jan ; Isbilir, Ali ; Sungkaworn, Titiwat ; [weitere]

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Publikationsdatum: 2022-11-28

Sprache: Englisch

Materialart: article , doc-type:article

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158

Unbekannt

A weak characterization of slow variables in stochastic dynamical systems (2020)

Bittracher, Andreas ; Schütte, Christof (Prof. Dr.)

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Publikationsdatum: 2022-11-28

Sprache: Englisch

Materialart: incollection , doc-type:Other

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159

Unbekannt

Dimensionality Reduction of Complex Metastable Systems via Kernel Embeddings of Transition Manifolds (2020)

Bittracher, Andreas ; Klus, Stefan ; Hamzi, Boumediene ; [weitere]

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Publikationsdatum: 2022-11-28

Beschreibung: We present a novel kernel-based machine learning algorithm for identifying the low-dimensional geometry of the effective dynamics of high-dimensional multiscale stochastic systems. Recently, the authors developed a mathematical framework for the computation of optimal reaction coordinates of such systems that is based on learning a parameterization of a low-dimensional transition manifold in a certain function space. In this article, we enhance this approach by embedding and learning this transition manifold in a reproducing kernel Hilbert space, exploiting the favorable properties of kernel embeddings. Under mild assumptions on the kernel, the manifold structure is shown to be preserved under the embedding, and distortion bounds can be derived. This leads to a more robust and more efficient algorithm compared to the previous parameterization approaches.

Sprache: Englisch

Materialart: article , doc-type:article

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160

Unbekannt

Generalisierte Markov-Modellierung (2020)

Reuter, Bernhard (Dr.)

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Publikationsdatum: 2022-11-28

Beschreibung: Markov State Models (MSM) sind der Goldstandard zur Modellierung biomolekularer Dynamik, da sie die Identifizierung und Analyse metastabiler Zustände ermöglichen. Die robuste Perron-Cluster-Cluster-Analyse (PCCA+) ist ein verbreiteter Spectral-Clustering-Algorithmus, der für das Clustering hochdimensionaler MSM verwendet wird. Da die PCCA+ auf reversible Prozesse beschränkt ist, wird sie zur Generalisierten PCCA+ (G-PCCA) verallgemeinert, die geeignet ist, nichtreversible Prozesse aufzuklären. Bernhard Reuter untersucht hier mittels G-PCCA die nichtthermischen Auswirkungen von Mikrowellen auf die Proteindynamik. Dazu führt er molekulardynamische Nichtgleichgewichtssimulationen des Amyloid-β-(1–40)-Peptids durch und modelliert diese.

Sprache: Deutsch

Materialart: book , doc-type:book

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161

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Singular Value Decomposition of Operators on Reproducing Kernel Hilbert Spaces (2020)

Mollenhauer, Mattes ; Schuster, Ingmar ; Klus, Stefan ; [weitere]

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Publikationsdatum: 2022-11-28

Sprache: Englisch

Materialart: incollection , doc-type:Other

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162

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A probabilistic algorithm for aggregating vastly undersampled large Markov chains (2020)

Bittracher, Andreas ; Schütte, Christof

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Publikationsdatum: 2022-11-28

Beschreibung: Model reduction of large Markov chains is an essential step in a wide array of techniques for understanding complex systems and for efficiently learning structures from high-dimensional data. We present a novel aggregation algorithm for compressing such chains that exploits a specific low-rank structure in the transition matrix which, e.g., is present in metastable systems, among others. It enables the recovery of the aggregates from a vastly undersampled transition matrix which in practical applications may gain a speedup of several orders of mag- nitude over methods that require the full transition matrix. Moreover, we show that the new technique is robust under perturbation of the transition matrix. The practical applicability of the new method is demonstrated by identifying a reduced model for the large-scale traffic flow patterns from real-world taxi trip data.

Sprache: Englisch

Materialart: reportzib , doc-type:preprint

Format: application/pdf

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163

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Transactions on Red-black and AVL trees in NVRAM (2020)

Schütt, Thorsten ; Schintke, Florian ; Skrzypczak, Jan

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Publikationsdatum: 2022-12-05

Sprache: Englisch

Materialart: article , doc-type:article

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164

Buch

Computing : archives for informatics and numerical computation; Supplementum (1977-2003)

Wien [u.a.] :Springer, ; 1.1977 - 16.2003; damit Ersch. eingest.

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Titel: Computing : archives for informatics and numerical computation; Supplementum

Verlag: Wien [u.a.] :Springer,

Erscheinungsjahr: 1977-2003

Erscheinungsverlauf: 1.1977 - 16.2003; damit Ersch. eingest.

Materialart: Buch

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Zuse-Institut Berlin

165

Zeitschrift/Serie

SIGBIO newsletter / (ab 1969-2001)

Association for Computing Machinery / Special Interest Group on Biomedical Computing

New York, NY :ACM, ; 1.1969 - 7.1975/76; N.S. 1.1976 - 21.2001,1; damit Ersch. eingest.

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Titel: SIGBIO newsletter /

Autor: Association for Computing Machinery / Special Interest Group on Biomedical Computing

Verlag: New York, NY :ACM,

Erscheinungsjahr: 1969-2001

Erscheinungsverlauf: 1.1969 - 7.1975/76; N.S. 1.1976 - 21.2001,1; damit Ersch. eingest.

ISSN: 0163-5697

Materialart: Zeitschrift/Serie

Sprache: Unbestimmte Sprache

Paralleltitel: Internetausg. ---〉:Biomedical computing

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166

Buch

Computer personnel : a quarterly publ. of the Special Interest Group on Computer Personnel Research, SIGCPR (1971-1999)

New York, NY :ACM, ; Nachgewiesen 2.1971 - 20.1999,4; damit Ersch. eingest.

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Titel: Computer personnel : a quarterly publ. of the Special Interest Group on Computer Personnel Research, SIGCPR

Verlag: New York, NY :ACM,

Erscheinungsjahr: 1971-1999

Erscheinungsverlauf: Nachgewiesen 2.1971 - 20.1999,4; damit Ersch. eingest.

ISSN: 0160-2497

Materialart: Buch

Paralleltitel: Internetausg. ---〉:Computer personnel

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Zuse-Institut Berlin

167

Zeitschrift/Serie

SIGNUM newsletter (ab 1969-1998)

Association for Computing Machinery / Special Interest Group on Numerical Mathematics

New York, NY :ACM, ; 4.1969 - 33.1998,2; damit Ersch. eingest

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Titel: SIGNUM newsletter

Autor: Association for Computing Machinery / Special Interest Group on Numerical Mathematics

Verlag: New York, NY :ACM,

Erscheinungsjahr: 1969-1998

Erscheinungsverlauf: 4.1969 - 33.1998,2; damit Ersch. eingest

ISSN: 0163-5778

Materialart: Zeitschrift/Serie

Vorheriger Titel: Vorg. ---〉:Association for Computing Machinery / Special Interest Committee on Numerical Mathematics: SICNUM newsletter

Suppl.: 16,3=3,2 von:Association for Computing Machinery / Technical Committee on Fortran: FORTEC forum

Paralleltitel: Internetausg. ---〉:Numerical mathematics

URL: Nur Table of Contents.

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168

Buch

Online : erfolgreiches Informationsmanagement, ADI-Nachrichten, ÖVD ; Organ d. ADI - Anwenderverband Deutscher Informationsverarbeiter e.V (1973-1997)

Anwenderverband Deutscher Informationsverarbeiter

Bergheim :DATACOM-Zeitschriften-Verl., | Köln Müller -1993,9 ; 11.1973 - 14.1976; 19.1981 - 20.1982; 1983 - 1994; 32.1995 - 34.1997,10

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Titel: Online : erfolgreiches Informationsmanagement, ADI-Nachrichten, ÖVD ; Organ d. ADI - Anwenderverband Deutscher Informationsverarbeiter e.V

Beteiligte Person(en): Anwenderverband Deutscher Informationsverarbeiter

Verlag: Bergheim :DATACOM-Zeitschriften-Verl., , Köln Müller -1993,9

Erscheinungsjahr: 1973-1997

Erscheinungsverlauf: 11.1973 - 14.1976; 19.1981 - 20.1982; 1983 - 1994; 32.1995 - 34.1997,10

ISSN: 0340-1545 , 0179-6623 , 0342-9393

Materialart: Buch

Sprache: Unbestimmte Sprache

Vorheriger Titel: Vorg. ---〉:Zeitschrift für Datenverarbeitung

Nachfolgender Titel: 15.1977 - 18.1980 ---〉:ADL-Verband für Informationsverarbeitung: ADL-Nachrichten, Online

Nachfolgender Titel: Aufgeg. in ---〉:Information week

Anmerkung: Später ohne Zählung

Suppl.: Beil. ---〉:Drucker spezial

Suppl.: Beil. ---〉:Online / special

Suppl.: Darin ---〉:Anwenderverband Deutscher Informationsverarbeiter: ADI-Nachrichten, ÖVD

Suppl.: Beil. ---〉:Pro info

Suppl.: Beil. ---〉:Online-Info

Suppl.: 1996 darin ---〉:Datacom-Special

Paralleltitel: 19.1981 auch in ---〉:Öffentliche Verwaltung und Datenverarbeitung

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Zuse-Institut Berlin

169

Zeitschrift/Serie

IBM-Nachrichten / (ab 1972-1995)

IBM Deutschland GmbH 〈Stuttgart〉

Stuttgart :IBM, ; 22.1972,Apr. - 45.1995 = Nr. 210-323; damit Ersch. eingest.

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Titel: IBM-Nachrichten /

Autor: IBM Deutschland GmbH 〈Stuttgart〉

Verlag: Stuttgart :IBM,

Erscheinungsjahr: 1972-1995

Erscheinungsverlauf: 22.1972,Apr. - 45.1995 = Nr. 210-323; damit Ersch. eingest.

ISSN: 0018-8662

Materialart: Zeitschrift/Serie

Sprache: Unbestimmte Sprache

Vorheriger Titel: Vorg. ---〉:Internationale Büro-Maschinen-Gesellschaft Deutschland 〈Sindelfingen〉: IBM-Nachrichten

Suppl.: Beil. ---〉:Hollerith-Mitteilungen

Paralleltitel: CD-ROM-Ausg. ---〉:IBM Deutschland GmbH 〈Stuttgart〉: IBM-Nachrichten

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170

Zeitschrift/Serie

Annual review in automatic programming (ab 1960-1995)

Oxford [u.a.] :Pergamon Press, ; 1.1960 - 19.1995

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Titel: Annual review in automatic programming

Verlag: Oxford [u.a.] :Pergamon Press,

Erscheinungsjahr: 1960-1995

Erscheinungsverlauf: 1.1960 - 19.1995

ISSN: 0066-4138

Materialart: Zeitschrift/Serie

Sprache: Unbestimmte Sprache

Nachfolgender Titel: Forts. ---〉:Annual reviews in control

Suppl.: 1=3; 2=6, 3=11, 4=12; 5=13,2 von:International tracts in computer science and technology and their application

Suppl.: 8=7; 9,2/3=8; 10=10; 11=11; 13,1=13; 14,1=15 von:Real time programming

Suppl.: 12,1-12,2=2 von:Systems analysis and simulation

Suppl.: 13,2=5 von:Control applications of nonlinear programming and optimization

Paralleltitel: Internetausg. ---〉:Annual reviews in control

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171

Zeitschrift/Serie

Nachrichtentechnische Zeitschrift : NTZ ; Zeitschrift für Informationstechnik u. Telekommunikation ; Organ der Nachrichtentechnischen Gesellschaft im VDE (ab 1955-1995)

Nachrichtentechnische Gesellschaft / Fachausschuß Informationsverarbeitung

Berlin :VDE-Verl., ; 8.1955,10 - 40.1987,2; 40.1987,6 - 48.1995,2

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Titel: Nachrichtentechnische Zeitschrift : NTZ ; Zeitschrift für Informationstechnik u. Telekommunikation ; Organ der Nachrichtentechnischen Gesellschaft im VDE

Beteiligte Person(en): Nachrichtentechnische Gesellschaft / Fachausschuß Informationsverarbeitung

Verlag: Berlin :VDE-Verl.,

Erscheinungsjahr: 1955-1995

Erscheinungsverlauf: 8.1955,10 - 40.1987,2; 40.1987,6 - 48.1995,2

ISSN: 0027-707X

Materialart: Zeitschrift/Serie

Sprache: Unbestimmte Sprache

Vorheriger Titel: Vorg. ---〉:Fernmeldetechnische Zeitschrift

Nachfolgender Titel: 40.1987,3-5 u. Forts. ---〉:NTZ

Anmerkung: Mikro-Elektronik

Suppl.: Beih. ---〉:Nachrichtentechnische Fachberichte

Suppl.: Index 1/10=11 von:Nachrichtentechnische Fachberichte

Paralleltitel: CD-ROM-Ausg. 1994 - 1995 ---〉:Elektronisches Zeitschriftenarchiv

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172

Zeitschrift/Serie

Zeitschrift für Operations-Research : ZOR ; mathematical methods of operations research (ab 1972-1995)

Heidelberg :Physica-Verl., ; 16.1972 - 42.1995

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Titel: Zeitschrift für Operations-Research : ZOR ; mathematical methods of operations research

Verlag: Heidelberg :Physica-Verl.,

Erscheinungsjahr: 1972-1995

Erscheinungsverlauf: 16.1972 - 42.1995

ISSN: 0340-9422

Materialart: Zeitschrift/Serie

Sprache: Unbestimmte Sprache

Vorheriger Titel: Vorg. ---〉:Ablauf- und Planungsforschung

Nachfolgender Titel: Forts. ---〉:Mathematical methods of operations research

Anmerkung: Ser. A, Theorie = H. 1,3,5,7 d. Jg.; Ser. B, Praxis = H. 2,4,6,8 d. Jg. , Deutsche Gesellschaft für Operations-Research

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173

Zeitschrift/Serie

SIGMICRO newsletter : a quarterly publ. of the Special Interest Group on Microprogramming (ab 1971-1995)

Association for Computing Machinery / Special Interest Group on Microprogramming

New York, NY :ACM, ; 2.1971/72 - 16.1985; 19.1988 - 26.1995; damit Ersch. eingest.

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Titel: SIGMICRO newsletter : a quarterly publ. of the Special Interest Group on Microprogramming

Autor: Association for Computing Machinery / Special Interest Group on Microprogramming

Verlag: New York, NY :ACM,

Erscheinungsjahr: 1971-1995

Erscheinungsverlauf: 2.1971/72 - 16.1985; 19.1988 - 26.1995; damit Ersch. eingest.

ISSN: 0163-5751 , 1050-916X

Materialart: Zeitschrift/Serie

Sprache: Unbestimmte Sprache

Vorheriger Titel: Vorg. ---〉:Association for Computing Machinery / Special Interest Committee on Microprocessing: SICMICRO newsletter

Nachfolgender Titel: 17.1986 - 18.1987 ---〉:Association for Computing Machinery / Special Interest Group on Microprogramming: SIGMICRO TCMICRO newsletter

Suppl.: Beil. ---〉:Microprogramming bibliography

Suppl.: 9,4=11; 12,4=14; 13,4=15 von:Micro

Suppl.: 20,3=22 von:International Workshop on Microprogramming and Microarchitecture: Annual International Workshop on Microprogramming and Microarchitecture

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174

Buch

Data-base 〈New York,NY〉 : db ; a quarterly publication of the Special Interest Group on Business Information Technology of the Association for Computing Machinery (1971-1994)

Association for Computing Machinery / Special Interest Group on Business Data Processing ; Association for Computing Machinery / Special Interest Group on Business Information Technology

New York, NY, ; 3.1971 - 25.1994

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Titel: Data-base 〈New York,NY〉 : db ; a quarterly publication of the Special Interest Group on Business Information Technology of the Association for Computing Machinery

Beteiligte Person(en): Association for Computing Machinery / Special Interest Group on Business Data Processing , Association for Computing Machinery / Special Interest Group on Business Information Technology

Verlag: New York, NY,

Erscheinungsjahr: 1971-1994

Erscheinungsverlauf: 3.1971 - 25.1994

ISSN: 0095-0033

Materialart: Buch

Vorheriger Titel: Vorg. ---〉 SIGBDP news-letter

Nachfolgender Titel: Forts. ---〉:¬The¬ data-base for advances in information systems

Suppl.: Einzelne Bd. zugl. Bd. von:Association for Computing Machinery / Special Interest Group on Management of Data: SIGMOD record

Suppl.: 12,4u.13,1=2 von:Data-base directions

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175

Zeitschrift/Serie

International journal of man machine studies (ab 1969-1993)

London [u.a.], ; 1.1969 - 39.1993

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Titel: International journal of man machine studies

Verlag: London [u.a.],

Erscheinungsjahr: 1969-1993

Erscheinungsverlauf: 1.1969 - 39.1993

ISSN: 0020-7373

Materialart: Zeitschrift/Serie

Sprache: Unbestimmte Sprache

Nachfolgender Titel: Forts. ---〉:International journal of human - computer studies

Anmerkung: Index 1/4.1969/72 in: 4.1972

Suppl.: 10,3=5 von:Man Computer Communications Conference: Proceedings

Paralleltitel: Internetausg. ---〉:International journal of man machine studies

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176

Zeitschrift/Serie

SIGACT news : publ. by the ACM Special Interest Group on Automata and Computability Theory (ab 1969-1992)

Association for Computing Machinery / Special Interest Group on Automata and Computability Theory

New York, NY :ACM, ; 1.1969 - 23.1992,2 = Nr. 1-83

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Titel: SIGACT news : publ. by the ACM Special Interest Group on Automata and Computability Theory

Autor: Association for Computing Machinery / Special Interest Group on Automata and Computability Theory

Beteiligte Person(en): Association for Computing Machinery / Special Interest Committee on Automata and Computability Theory

Verlag: New York, NY :ACM,

Erscheinungsjahr: 1969-1992

Erscheinungsverlauf: 1.1969 - 23.1992,2 = Nr. 1-83

ISSN: 0163-5700

Materialart: Zeitschrift/Serie

Nachfolgender Titel: Forts. ---〉:Association for Computing Machinery / Special Interest Group on Algorithms and Computation Theory: SIGACT news

Suppl.: In 12.1980,2 Index 1/12.1969/80 von ---〉:Symposium on Theory of Computing: Conference record of the ... annual ACM Symposium on Theory of Computing

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177

Zeitschrift/Serie

SIGPLAN notices : a monthly publication of the Special Interest Group on Programming Languages of the Association for Computing Machinery (ab 1966-1991)

Association for Computing Machinery / Special Interest Group on Programming Languages

New York, NY :ACM, ; 1.1966 - 26.1991,9u.11

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Titel: SIGPLAN notices : a monthly publication of the Special Interest Group on Programming Languages of the Association for Computing Machinery

Autor: Association for Computing Machinery / Special Interest Group on Programming Languages

Verlag: New York, NY :ACM,

Erscheinungsjahr: 1966-1991

Erscheinungsverlauf: 1.1966 - 26.1991,9u.11

ISSN: 0362-1340

Materialart: Zeitschrift/Serie

Sprache: Unbestimmte Sprache

Nachfolgender Titel: 26.1991,10 u. Forts. ---〉:Association for Computing Machinery / Special Interest Group on Programming Languages: ACM SIGPLAN notices

Suppl.: 6,2=1971 von:Symposium on Data Structures in Programming Languages: Proceedings of a Symposium on Data Structures in Programming Languages

Suppl.: 17,4=10,2; 22,10=15,5; 24,spec.iss.=17,2; 26,4=19,2 von:Computer architecture news

Suppl.: 21,10=1986 von:Workshop on Object Oriented Programming: Transcript

Suppl.: 11,6=10,1 von:Computer graphics

Suppl.: 16,6=2,1/2 von:Association for Computing Machinery / Special Interest Group on Office Automation: SIGOA newsletter

Suppl.: 14,8=1979; 17,6=1982; 19,6=1984; 21,7=1986 von:Symposium on Compiler Construction: Proceedings of the SIGPLAN Symposium on Compiler Construction

Suppl.: 20,7=1985 von:Symposium on Language Issues in Programming Environments: Proceedings of the ACM SIGPLAN ... Symposium on Language Issues in Programming Environments

Suppl.: 19,5=1; 22,1=2; 24,2=3 von:Software Engineering Symposium on Practical Software Development Environments: Proceedings of the ACM SIGSOFT SIGPLAN Software Engineering Symposium on Practical Software Development Environments

Suppl.: 22,10=2; 24,spec.iss.=3 von:International Conference on Architectural Support for Programming Languages and Operating Systems: Proceedings

Suppl.: 23,7=1988; 24,7=1989; 25,6=1990 von:Conference on Programming Language Design and Implementation: Proceedings of the SIGPLAN ... Conference on Programming Language Design and Implementation

Suppl.: 21,11=1; 22,12=2; 23,11=3; 24,10=4 von:OOPSLA: Conference proceedings

Suppl.: 22,10=21,4; 24,spec.iss.=23,spec.iss.; 26,4=25,spec.iss. von:Operating systems review

Suppl.: 17,4=1982 von:Symposium on Architectural Support for Programming Languages and Operating Systems: Proceedings

URL: 5.1970 - 34.1999: Contents; 35.2000 -: Volltexte

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178

Zeitschrift/Serie

SIGART newsletter : a bimonthly publ. of the ACM Special Interest Group on Artificial Intelligence (ab 1969-1989)

Association for Computing Machinery / Special Interest Group on Artificial Intelligence

New York, NY :ACM, ; Nachgewiesen Nr. 15.1969 - 110.1989

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Titel: SIGART newsletter : a bimonthly publ. of the ACM Special Interest Group on Artificial Intelligence

Autor: Association for Computing Machinery / Special Interest Group on Artificial Intelligence

Verlag: New York, NY :ACM,

Erscheinungsjahr: 1969-1989

Erscheinungsverlauf: Nachgewiesen Nr. 15.1969 - 110.1989

ISSN: 0163-5719

Materialart: Zeitschrift/Serie

Nachfolgender Titel: Forts. ---〉:Association for Computing Machinery / Special Interest Group on Artificial Intelligence: SIGART bulletin

Suppl.: 73=1; 80=2 von:Workshop on Distributed AI: Report on the Workshop on Distributed AI

Suppl.: 84=3 von:Workshop on Distributed Artificial Intelligence: Report on the ... Annual Workshop on Distributed Artificial Intelligence

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179

Zeitschrift/Serie

Angewandte Informatik : Applied informatics (ab 1971-1989)

Braunschweig ; Wiesbaden :Vieweg, ; 13.1971 - 31.1989

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Titel: Angewandte Informatik : Applied informatics

Verlag: Braunschweig ; Wiesbaden :Vieweg,

Erscheinungsjahr: 1971-1989

Erscheinungsverlauf: 13.1971 - 31.1989

ISSN: 0013-5704

Materialart: Zeitschrift/Serie

Sprache: Unbestimmte Sprache

Vorheriger Titel: Vorg. ---〉:Elektronische Datenverarbeitung

Suppl.: Beil. CAK

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180

Zeitschrift/Serie

Mathematical programming /; Study (ab 1974-1987)

Mathematical Programming Society

Amsterdam :North-Holland Publ. Co., ; 1.1974 - 31.1987.

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Titel: Mathematical programming /; Study

Beteiligte Person(en): Mathematical Programming Society

Verlag: Amsterdam :North-Holland Publ. Co.,

Erscheinungsjahr: 1974-1987

Erscheinungsverlauf: 1.1974 - 31.1987.

ISSN: 0303-3929

Materialart: Zeitschrift/Serie

Nachfolgender Titel: :Mathematical programming / B

Suppl.: 13:Conference on Combinatorial Optimization: Conference on Combinatorial Optimization

Suppl.: 27-28:Stochastic programming

Suppl.: 22:Mathematical programming at Oberwolfach

Suppl.: :Combinatorial optimization

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181

Zeitschrift/Serie

Mathematical programming / (ab 1971-1987)

Mathematical Programming Society

Amsterdam :North-Holland Publ., ; 1.1971 - 39.1987

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Titel: Mathematical programming /

Beteiligte Person(en): Mathematical Programming Society

Verlag: Amsterdam :North-Holland Publ.,

Erscheinungsjahr: 1971-1987

Erscheinungsverlauf: 1.1971 - 39.1987

ISSN: 0025-5610

Materialart: Zeitschrift/Serie

Anmerkung: Teils ohne Unterreihenbez.

Suppl.: 1,1-3=7; 4-5=8 von:International Mathematical Programming Symposium: Proceedings of the ... International Mathematical Programming Symposium

URL: http://www.springerlink.com/content/103081/

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182

Zeitschrift/Serie

Information and control (ab 1957-1986)

New York, NY [u.a.] :Academ. Pr., ; 1.1957/58 - 71.1986

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Titel: Information and control

Verlag: New York, NY [u.a.] :Academ. Pr.,

Erscheinungsjahr: 1957-1986

Erscheinungsverlauf: 1.1957/58 - 71.1986

ISSN: 0019-9958

Materialart: Zeitschrift/Serie

Nachfolgender Titel: Forts. ---〉:Information and computation

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183

Zeitschrift/Serie

¬Das¬ Rechenzentrum : Fachzeitschrift für d. Betrieb von DV-Systemen in Wirtschaft u. Verwaltung, Wissenschaft, Medizin u. Technik (ab 1978-1986)

München ; Wien :Hanser, ; 1.1978 - 9.1986,2

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Titel: ¬Das¬ Rechenzentrum : Fachzeitschrift für d. Betrieb von DV-Systemen in Wirtschaft u. Verwaltung, Wissenschaft, Medizin u. Technik

Verlag: München ; Wien :Hanser,

Erscheinungsjahr: 1978-1986

Erscheinungsverlauf: 1.1978 - 9.1986,2

ISSN: 0343-317X

Materialart: Zeitschrift/Serie

Sprache: Unbestimmte Sprache

Nachfolgender Titel: Forts. ---〉:Praxis der Informationsverarbeitung und Kommunikation

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184

Buch

Elektronische Rechenanlagen : Informationstechnik: Computer, Systeme, Anwendungen (1959-1985)

Nachrichtentechnische Gesellschaft / Fachausschuß Informationsverarbeitung

München ; Wien :Oldenbourg, ; 1.1959 - 16.1974,5; 27.1985

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Titel: Elektronische Rechenanlagen : Informationstechnik: Computer, Systeme, Anwendungen

Beteiligte Person(en): Nachrichtentechnische Gesellschaft / Fachausschuß Informationsverarbeitung

Verlag: München ; Wien :Oldenbourg,

Erscheinungsjahr: 1959-1985

Erscheinungsverlauf: 1.1959 - 16.1974,5; 27.1985

ISSN: 0013-5720

Materialart: Buch

Sprache: Unbestimmte Sprache

Nachfolgender Titel: 16.1974,6 - 26.1984 ---〉:Elektronische Rechenanlagen mit Computer-Praxis

Nachfolgender Titel: Forts. ---〉:Informationstechnik

Suppl.: Beil. ---〉:Computer-Praxis

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185

Zeitschrift/Serie

Elektronische Rechenanlagen mit Computer-Praxis : eR ; Theorie, Technik und Anwendung der Computer (ab 1974-1984)

München ; Wien :Oldenbourg, ; 16.1974,6 - 26.1984

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Titel: Elektronische Rechenanlagen mit Computer-Praxis : eR ; Theorie, Technik und Anwendung der Computer

Verlag: München ; Wien :Oldenbourg,

Erscheinungsjahr: 1974-1984

Erscheinungsverlauf: 16.1974,6 - 26.1984

ISSN: 0013-5720

Materialart: Zeitschrift/Serie

Sprache: Unbestimmte Sprache

Vorheriger Titel: Vorg. ---〉:Computer-Praxis

Nachfolgender Titel: Vorg. u. Forts. ---〉:Elektronische Rechenanlagen

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186

Zeitschrift/Serie

SIGPC notes : publ. of the Special Interest Group on Personal Computing (ab 1978-1984)

Association for Computing Machinery / Special Interest Group on Personal Computing

New York, NY :ACM, ; 1.1978 - 6.1983/84,2

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Titel: SIGPC notes : publ. of the Special Interest Group on Personal Computing

Autor: Association for Computing Machinery / Special Interest Group on Personal Computing

Verlag: New York, NY :ACM,

Erscheinungsjahr: 1978-1984

Erscheinungsverlauf: 1.1978 - 6.1983/84,2

ISSN: 0163-5816

Materialart: Zeitschrift/Serie

Nachfolgender Titel: Forts. ---〉:Association for Computing Machinery / Special Interest Group on Small and Personal Computing Systems and Applications: SIGSMALL - PC notes

Suppl.: 6,3=10,2; 6,4=10,3 von:Association for Computing Machinery / Special Interest Group on Small Computing Systems and Applications: SIGSMALL newsletter

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187

Buch

Jahresbericht des Wissenschaftlichen Rechenzentrums Berlin (1978-1983)

Wissenschaftliches Rechenzentrum 〈Berlin, West〉

Berlin, ; Nachgewiesen 1978 - 1983; damit Ersch. eingest.

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Titel: Jahresbericht des Wissenschaftlichen Rechenzentrums Berlin

Autor: Wissenschaftliches Rechenzentrum 〈Berlin, West〉

Verlag: Berlin,

Erscheinungsjahr: 1978-1983

Erscheinungsverlauf: Nachgewiesen 1978 - 1983; damit Ersch. eingest.

Materialart: Buch

Sprache: Unbestimmte Sprache

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188

Buch

Jahresbericht (1975-1983)

Grossrechenzentrum für die Wissenschaft in Berlin

Berlin, ; 1974/75(1975) - 1981/82(1983)

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Titel: Jahresbericht

Autor: Grossrechenzentrum für die Wissenschaft in Berlin

Verlag: Berlin,

Erscheinungsjahr: 1975-1983

Erscheinungsverlauf: 1974/75(1975) - 1981/82(1983)

Materialart: Buch

Sprache: Unbestimmte Sprache

Vorheriger Titel: Grossrechenzentrum für die Wissenschaft in Berlin: Tätigkeitsbericht ... des Großrechenzentrums für die Wissenschaft in Berlin

Nachfolgender Titel: Konrad-Zuse-Zentrum für Informationstechnik 〈Berlin, West〉: Tätigkeitsbericht

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189

Zeitschrift/Serie

¬The¬ Bell system technical journal : BSTJ ; devoted to the scientific and engineering aspects of electrical communication (ab 1922-1983)

American Telephone and Telegraph Company 〈New York, NY〉

New York, NY :Co., ; 1.1922 - 62.1983

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Titel: ¬The¬ Bell system technical journal : BSTJ ; devoted to the scientific and engineering aspects of electrical communication

Beteiligte Person(en): American Telephone and Telegraph Company 〈New York, NY〉

Verlag: New York, NY :Co.,

Erscheinungsjahr: 1922-1983

Erscheinungsverlauf: 1.1922 - 62.1983

ISSN: 0005-8580 , 0096-8692

Materialart: Zeitschrift/Serie

Nachfolgender Titel: Forts. ---〉:Bell Laboratories 〈New York, NY〉: AT & T Bell Laboratories technical journal

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190

Zeitschrift/Serie

Jahresbericht des Wissenschaftlichen Rechenzentrums Berlin (ab 1978-1983)

Wissenschaftliches Rechenzentrum 〈Berlin, West〉

Berlin, ; Nachgewiesen 1978 - 1983; damit Ersch. eingest.

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Titel: Jahresbericht des Wissenschaftlichen Rechenzentrums Berlin

Autor: Wissenschaftliches Rechenzentrum 〈Berlin, West〉

Verlag: Berlin,

Erscheinungsjahr: 1978-1983

Erscheinungsverlauf: Nachgewiesen 1978 - 1983; damit Ersch. eingest.

Materialart: Zeitschrift/Serie

Sprache: Unbestimmte Sprache

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191

Zeitschrift/Serie

Jahresbericht (ab 1975-1983)

Grossrechenzentrum für die Wissenschaft in Berlin

Berlin, ; 1974/75(1975) - 1981/82(1983)

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Titel: Jahresbericht

Autor: Grossrechenzentrum für die Wissenschaft in Berlin

Verlag: Berlin,

Erscheinungsjahr: 1975-1983

Erscheinungsverlauf: 1974/75(1975) - 1981/82(1983)

Materialart: Zeitschrift/Serie

Sprache: Unbestimmte Sprache

Vorheriger Titel: Vorg. ---〉:Grossrechenzentrum für die Wissenschaft in Berlin: Tätigkeitsbericht ... des Großrechenzentrums für die Wissenschaft in Berlin

Nachfolgender Titel: Forts. ---〉:Konrad-Zuse-Zentrum für Informationstechnik 〈Berlin, West〉: Tätigkeitsbericht

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192

Zeitschrift/Serie

SIGMAP bulletin (ab 1969-1983)

Association for Computing Machinery / Special Interest Group on Mathematical Programming

New York, NY :Assoc., ; Nachgewiesen Nr. 6.1969 - 8.1970; 22.1977 - 32.1983; damit Ersch. eingest.

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Titel: SIGMAP bulletin

Autor: Association for Computing Machinery / Special Interest Group on Mathematical Programming

Verlag: New York, NY :Assoc.,

Erscheinungsjahr: 1969-1983

Erscheinungsverlauf: Nachgewiesen Nr. 6.1969 - 8.1970; 22.1977 - 32.1983; damit Ersch. eingest.

ISSN: 0163-5786

Materialart: Zeitschrift/Serie

Nachfolgender Titel: 9.1971 - 21.1977 ---〉:Association for Computing Machinery / Special Interest Group on Mathematical Programming: SIGMAP newsletter

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193

Buch

GRZ-Hausmitteilungen (1973-1982)

Grossrechenzentrum für die Wissenschaft in Berlin

Berlin, ; 1973 - 1982; damit Ersch. eingest.

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Titel: GRZ-Hausmitteilungen

Autor: Grossrechenzentrum für die Wissenschaft in Berlin

Verlag: Berlin,

Erscheinungsjahr: 1973-1982

Erscheinungsverlauf: 1973 - 1982; damit Ersch. eingest.

Materialart: Buch

Sprache: Unbestimmte Sprache

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194

Zeitschrift/Serie

GRZ-Hausmitteilungen (ab 1973-1982)

Grossrechenzentrum für die Wissenschaft in Berlin

Berlin, ; 1973 - 1982; damit Ersch. eingest.

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Titel: GRZ-Hausmitteilungen

Autor: Grossrechenzentrum für die Wissenschaft in Berlin

Verlag: Berlin,

Erscheinungsjahr: 1973-1982

Erscheinungsverlauf: 1973 - 1982; damit Ersch. eingest.

Materialart: Zeitschrift/Serie

Sprache: Unbestimmte Sprache

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195

Zeitschrift/Serie

SIGSOC bulletin : a quarterly publ. of the ACM Special Interest Group on the Social and Behavioral Science of Computing (ab 1971-1982)

Association for Computing Machinery / Special Interest Group on the Social and Behavioral Science of Computing

New York, NY :ACM, ; 3.1971/72 - 13.1981/82

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Titel: SIGSOC bulletin : a quarterly publ. of the ACM Special Interest Group on the Social and Behavioral Science of Computing

Autor: Association for Computing Machinery / Special Interest Group on the Social and Behavioral Science of Computing

Verlag: New York, NY :ACM,

Erscheinungsjahr: 1971-1982

Erscheinungsverlauf: 3.1971/72 - 13.1981/82

ISSN: 0163-5794

Materialart: Zeitschrift/Serie

Vorheriger Titel: Vorg. ---〉:Association for Computing Machinery / Special Interest Group on the Social and Behavioral Science of Computing: SIGSOC newsletter

Nachfolgender Titel: Forts. ---〉:Association for Computing Machinery / Special Interest Group on Computer and Human Interaction: SIGCHI bulletin

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196

Zeitschrift/Serie

SIGLASH newsletter (ab 1968-1981)

Association for Computing Machinery / Special Interest Group on Language Analysis and Studies in the Humanities

New York, NY :ACM, ; 1.1968 - 14.1981,1/2; damit Ersch. eingest.

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Titel: SIGLASH newsletter

Autor: Association for Computing Machinery / Special Interest Group on Language Analysis and Studies in the Humanities

Verlag: New York, NY :ACM,

Erscheinungsjahr: 1968-1981

Erscheinungsverlauf: 1.1968 - 14.1981,1/2; damit Ersch. eingest.

ISSN: 0036-147X

Materialart: Zeitschrift/Serie

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197

Zeitschrift/Serie

ÖVD, Online-ADL : öffentl. Verwaltung u. Datenverarbeitung (ab 1977-1980)

ADL-Verband für Informationsverarbeitung

Köln :Müller, ; 7.1977 - 10.1980

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Titel: ÖVD, Online-ADL : öffentl. Verwaltung u. Datenverarbeitung

Autor: ADL-Verband für Informationsverarbeitung

Beteiligte Person(en): Anwenderverband Deutscher Informationsverarbeiter

Verlag: Köln :Müller,

Erscheinungsjahr: 1977-1980

Erscheinungsverlauf: 7.1977 - 10.1980

ISSN: 0342-9407

Materialart: Zeitschrift/Serie

Sprache: Unbestimmte Sprache

Nachfolgender Titel: Vorg. u. Forts. ---〉:Öffentliche Verwaltung und Datenverarbeitung

Suppl.: Darin ---〉:ADL-Verband für Informationsverarbeitung: ADL-Nachrichten, Online

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198

Digitale Medien

Method to avoid losses of uranium at the interface between different eluting agents during anion exchange chromatography (1978)

Strelow, F. W. E. ; Van der Walt, T. N.

s.l. : American Chemical Society

Analytical chemistry 50 (1978), S. 44-47

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ISSN: 1520-6882

Quelle: ACS Legacy Archives

Thema: Chemie und Pharmazie

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1021/ac50023a016

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199

Digitale Medien

Gas chromatographic determination of bis(chloromethyl)ether emissions in the atmosphere of industrial plants (1978)

Bruner, Fabrizio ; Bertoni, Giuliano ; Severini, Claudio

s.l. : American Chemical Society

Analytical chemistry 50 (1978), S. 53-55

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ISSN: 1520-6882

Quelle: ACS Legacy Archives

Thema: Chemie und Pharmazie

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1021/ac50023a018

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200

Digitale Medien

Separation/identification system for complex mixtures using mass separation and mass spectral characterization (1978)

McLafferty, Fred W. ; Bockhoff, Frank M.

s.l. : American Chemical Society

Analytical chemistry 50 (1978), S. 69-76

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ISSN: 1520-6882

Quelle: ACS Legacy Archives

Thema: Chemie und Pharmazie

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1021/ac50023a021

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