cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Superquadric Object Representation for Optimization-based Semantic SLAM
Creators: name: Tschopp, Florian
name: Nieto, Juan
name: Siegwart, Roland
name: Cadena, Cesar
Publisher: name: ETH Zurich
Year: 2021

description: Introducing semantically meaningful objects to visual Simultaneous Localization and Mapping (SLAM) has the potential to improve both the accuracy and reliability of pose estimates, especially in challenging scenarios with significant viewpoint and appearance changes. However, how semantic objects should be represented for an efficient inclusion in optimization-based SLAM frameworks is still an open question. Superquadrics (SQs) are an efficient and compact object representation, able to represent most common object types to a high degree, and typically retrieved from 3D point-cloud data. However, accurate 3D point-cloud data might not be available in all applications. Recent advancements in machine learning enabled robust object recognition and semantic mask measurements from camera images under many different appearance conditions. We propose a pipeline to leverage such semantic mask measurements to fit SQ parameters to multi-view camera observations using a multi-stage initialization and optimization procedure. We demonstrate the system's ability to retrieve randomly generated SQ parameters from multi-view mask observations in preliminary simulation experiments and evaluate different initialization stages and cost functions.
Data-driven analysis of the "Ranking quality" network formation model
Creators: name: Li, Cheng
Publisher: name: ETH Zurich
Year: 2020

description: Recent years have witnessed a dramatic growth in online social media, such as YouTube, Instagram, and Twitch, which are based on User-Generated Content (UGC). A huge amount of UGCs are generated by social influencers every day and spread over the world, having a huge impact on, e.g., social media marketing, and information spreading. Therefore, it becomes important to investigate (i) how such influencers emerge and (ii) what are the properties of the resulting network structure. Motivated by these questions, our work is rooted in the quality-based model, proposed by Pagan et al. [1], which addresses the following dynamic process in UGC-based social networks. To empirically support and validate this novel model, we perform an extensive analysis of real-world data of dynamical networks on Twitch.tv, the world’s leading live streaming platform for gamers. Our contribution is twofold: i) identifying and preparing two publicly available data-sets on Twitch, for this particular analysis. ii) showing empirical evidence of the theoretical predictions in the ranking-quality model in terms of: network properties at equilibrium (indegree and outdegree distribution) and audience overlap index.
H Robust Control of a Transparent Power-Hardware-in-the-Loop System
Creators: name: Liu, Zhaolin
Publisher: name: ETH Zurich
Year: 2021

description: Power-Hardware-in-the-Loop (PHIL) system is a testing infrastructure capable of integrating both the real equipment and highly accurate real-time simulation models of power grids. An interface operating between the hardware and software may face stability and robustness issues, for which many methods, such as the Tramsmission Line Interface (TLI), are developed. This thesis proposes an alternative method of designing the PHIL interface via H1 robust control that utilises a nominal model with parameter uncertainties, allowing the resulting controller interface to not only achieve robust stability within the uncertainty space but also improve performance and accuracy. This method begins with the formulation of the PHIL system dynamics into a nominal model. It then establishes the desired performance requirements and identifies the interactions of uncertain parameters through the use of weighting functions. Finally, discrete D-K iteration is used to obtain the final interfacing controller whereby a two-step, iterative optimisation finds a H1 robust controller. Based on simulations containing a wide range of parameters, the H-infinity robust control method shows promising results versus the state-of-the-art TLI method. It offers the ability to synthesise a controller that is robust against parameter change, and at the same time, allows the PHIL designer to have more flexbility in characterising the performance and stability of the PHIL interface. Comparing with the TLI method, the main disadvantage of our interface includes poor handling of circuit faults. Future works may be carried out to improve this characteristics as well as various other aspects of the design process such as numerical stability and uncertainty definitions.
Learning from Simulation, Racing in Reality: Sim2Real Methods for Autonomous Racing
Creators: name: Chisari, Eugenio
Publisher: name: ETH Zurich
Year: 2020

description: Reinforcement Learning (RL) methods have been successfully demonstrated in robotic
tasks, however, their application to continuous state-action systems with fast dynamics is
challenging. In this work, we investigate RL solutions for the autonomous racing problem
on the ORCA miniature race car platform. When training a deep neural network policy
using RL methods only using simulations, we observe poor performance, due to model
mismatch also known as reality gap. We propose three different methods to reduce this
gap, first we propose a policy regularization in the policy optimization step, second, we
use model randomization. These two methods allow learning a policy that can race the
car without any real environment interactions. Our third method improves this policy, by
running the RL algorithm online while driving the car. The achieved performance on the
ORCA platform is comparable to that achieved previously by a model-based controller,
in terms of lap time, and improved with respect to track constraint violations.
State Estimation of Asymmetric Phase Shift Transformers
Creators: name: Früh, Nicolas
Publisher: name: ETH Zurich
Year: 2020

description: The tap positions of transformers are used by the transmission system operator (TSO) to control the power flows and voltages in a transmission system. The control decisions taken by the TSO are based on the results of the state estimation, which requires up-to-date information about all transformer tap positions. If this information is not available, either due to a communication failure or faulty measurements, state estimation could fail. To avoid such a scenario, in this thesis, we derive a method to estimate the discrete transformer tap positions for both symmetric and asymmetric phase shift transformers using state vector augmentation (SVA). Such a method has not yet been discussed in the literature for asymmetric phase shift transformers in specific. Furthermore, we performan in-depth observability analysis which allows us to define a minimum measurement set to guarantee system observability when transformer taps are being estimated. We derive a method to assess the reliability of the state estimation result which allows us to identify situations where the discretization of the tap positions could lead to errors. Finally, we test the method on the IEEE 14 bus network as well as the Swissgrid network (the entire transmission system of Switzerland) with real measurement data. Our method performs well under all tested conditions and estimates the correct tap position for all conditions and transformers which were studied.
title: Zahnwellen-Verbindung: Auslegung, Potentiale und Festigkeitsnachweis von Passverzahnungen
Creators: name: Schäfer, G.
Publisher: name: MyCoRe Community
Year: 2014
Subjects: subject: 600

description: Mitteilungen aus dem Institut für Maschinenwesen der Technischen Universität Clausthal, vol. 39, p. 5
Spin Shots for a Robotic Billiard Player
Creators: name: Hug, Luzian
Publisher: name: ETH Zurich
Year: 2020

description: Beside pocketing balls, a vital part of the game of snooker is also bringing the cue ball
into an advantageous position after the shot. Building upon several preceding projects,
we develop a robotic snooker player to the point of being able to not only pocket a ball
successfully, but also controlling the trajectory of the cue ball over its whole movement.
In order to achieve this, the cue strike, the motion of the ball on the table, the collision
between two balls and between a ball and a cushion are modelled physically. By inverting
the physical model, we find the shot velocity and amount of spin needed in order to place
the cue ball in the desired location after the shot. We then test the model on the actual
robot. Furthermore, the robot’s state estimator and controller are improved in order to
generate meaningful results. The time required to line up a shot with the robot is reduced
from several minutes to between 15 and 30 seconds. With the updated system, we are
able to place the cue ball within 324mm of the desired position in 68 percent of shots.
Phtanomiamia Chen, Ren
Creators: name: Chen, Lu
name: Ren, Dong
name: BØthoux, Olivier
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Phtanomiamia

description: Phtanomiamia Chen, Ren and BØthoux gen. nov.
(urn:lsid:zoobank.org: 3FAEB099-6FAA-473F-899D-89BA96B9C729)
Type species
Phtanomiamia gui sp. nov.
Gender
Masculine.
Etymology
A combination of “ phtanos ”, “come earlier” in ancient Greek, and “ Miamia ”, the name of a related genus; referring to close proximity of the new genus with Miamia spp.
Diagnosis
By monotypy, as for the type species.
description: Published as part of Chen, Lu, Ren, Dong & BØthoux, Olivier, 2020, A new, rare and small " lobeattid " species (Insecta: Archaeorthoptera) found at Xiaheyan (Pennsylvanian; Ningxia, China), pp. 71-74 in Fossil Record 23 (1) on page 72, DOI: 10.5194/fr-23-71-2020, http://zenodo.org/record/10965742
Controller tuning optimization and standardization of a CNC-grinding machine
Creators: name: König, Christopher
Publisher: name: ETH Zurich
Year: 2019

description: Tuning of controller parameters is a highly relevant part of the controller design
of a system, because of its high influence on the controllers performance. Manual
tuning is a time consuming and difficult process for complex control systems,
which results in a high variance of the systems performance, due to the absence
of a rigorous definition which parameters to select and how to measure the
performance. Thus a standardized, safe and efficient autotuning process that
results in optimal performance of the system is a desirable feature for industrial
machines and processes. In the scope of this work an efficient data-driven
algorithm, based on Bayesian optimization, is developed for the tuning of a
cascaded control structure. The Bayesian optimization algorithm uses a Gaussian
process regression to model the performance of the system as an unknown
objective function. Each iteration of the algorithm, the posterior distribution
of the Gaussian process is updated and a constrained expected improvement
acquisition function is maximized by particle swarm optimization to find the
next parameter candidates in a systematic way.
The algorithm is tested first on the simulation of a state-of-the-art CNC grinding
machine, using an identified model of the grinding axes. On the simulation the
algorithm is compared with relay feedback tuning and safe Bayesian optimization
(SafeOpt). Afterwards the algorithm is tested on different grinding axes
of the real CNC grinding machine and the result is evaluated, using a grinding
process of a PCBN workpiece. Furthermore the algorithm is tested to detect
faulty conditions of the CNC grinding axes.
While the constrained Bayesian optimization algorithm shows a significantly
better performance than the relay feedback tuning, it converges faster than
the tested SafeOpt algorithm for the simulation experiments. Using the constrained
Bayesian optimization tuning algorithm on the real system illustrates
limitations for this method, caused by noise, rough quantization and differences
between the mechanics during tuning and during grinding. The constrained
Bayesian optimization tuning copes with the latter after the introduction of an
algorithm to detect the critical gains of an axis and a performance metric of the
cost, depending on the determined critical gains. During grinding this altered
constrained Bayesian optimization tuning shows satisfying results and thus can
be used as standardized autotuning method for the CNC grinding machines.
Furthermore faulty conditions of the machine can be detected, if its influence
on the position or critical gains is significant enough.
title: Mechanismen der Oberflächendesoxidation während des Vakuumlötens von Edelstählen
Creators: name: Wegewitz, Lienhard
name: Marschewski, Marcel
name: Maus-Friedrichs, Wolfgang
name: Holländer, Ulrich
name: Möhwald, Kai
Publisher: name: Shaker
Year: 2015
Subjects: subject: 540

description: Das Vakuumlöten von korrosions- und hitzebeständigen Edelstählen ist eine wichtige-Fügetechnik, die unter anderem in der Produktion von Abgaskomponenten für Kraftfahrzeuge eingesetzt wird. Die physikalischen und chemischen Vorgänge, die während des Lötprozesses an den Grenzflächen stattfinden, sind kaum untersucht. Mit dem Ziel, aus dem Verständnis dieser Prozesse heraus die Lötbarkeit von Hochleistungsstählen zu verbessern, wird ein Vergleich zwischen einem aluminiumhaltigen ferritischen Edelstahl und einem aluminiumfreien austenitischen Edelstahl gezogen. Anschließend wird ein Ansatz zur Verbesserung der Lötfähigkeit von Edelstählen in silandotiertem Argon-Grobvakuum vorgestellt.
description: Tagungsband : 1. Niedersächsisches Symposium Materialtechnik, 12. bis 13. Februar 2015, Clausthal-Zellerfeld
title: Konzeption und Herstellung von kunststoffbasierten Mikrotastern
Creators: name: Florian, Tamara
name: Ziegmann, Gerhard
name: Meiners, Dieter
name: Ferreira, Nelson
Publisher: name: Shaker
Year: 2015
Subjects: subject: 540

description: Zunehmende Miniaturisierung für die Mikro- und Nanotechnik stellt immer höhere Anforderungen an die dimensionelle Messtechnik. Koordinatenmessgeräte (KMG) sind wesentlicher Bestandteil der Qualitätssicherung der Fertigungsprozesse, z. B. im Automobilbau, Maschinenbau oder in der Luft- und Raumfahrttechnik.
Häufig handelt es sich bei KMGs um taktil arbeitende Messgeräte. Die zum Einsatz kommenden Taster ermöglichen eine kraft- oder auslenkungsgeregelte Positionserfassung. Die Taster zur Erfassung von Mikrostrukturen werden Mikrotaster genannt und bestehen aus einem Kraftsensor und einem meist vertikal ausgerichteten Taststift.
Am Institut für Mikrotechnik der TU Braunschweig (IMT) wurde ein so genannter „Bosstaster“ – ein monolithischer dreidimensionaler Mikrotaster auf der Basis der Silizium-Technologie – entwickelt und gefertigt.
Das bisherige Taststift-System zeichnet sich durch eine sehr hohen Fertigungsaufwand aus, da die Stifte einzeln im Funkenerodierverfahren gefertigt werden. Anschließend folgen zwei Fügeschritte: zum einen zum eigentlichen Tastelement (Rubinkugel Ø 300 μm), zum anderen zur Messmembran. Durch den Einsatz des Kunststoffverarbeitungsverfahrens Mikrospritzguss kann eine wirtschaftlichere Fertigung mit einer deutlichen Zunahme der Gestaltungsfreiheit der Taststifte realisiert werden.
Neben der Materialentwicklung sowie der Charakterisierung liegt ein Fokus auf dem Werkzeugkonzept, welches eine präzise Fertigung ermöglicht. Ferner wird die Funktionsfähigkeit des Systems nachgewiesen.
description: Tagungsband : 1. Niedersächsisches Symposium Materialtechnik, 12. bis 13. Februar 2015, Clausthal-Zellerfeld
title: Übertragungsfähigkeit innenhochdruckgefügter Pressverbindungen
Creators: name: Hilgermann, J.L.
name: Schäfer, G.
Publisher: name: MyCoRe Community
Year: 2014
Subjects: subject: 600

description: Mitteilungen aus dem Institut für Maschinenwesen der Technischen Universität Clausthal, vol. 39, p. 51
Dundubia ayutthaya Beuk 1996
Creators: name: Sanborn, Allen F.
name: Phillips, Polly K.
name: Sites, Robert W.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cicadidae
Dundubia
Dundubia ayutthaya

description: Dundubia ayutthaya Beuk, 1996
Dundubia ayutthaya, Beuk, 1996: 137, 139, 169–172, Hoopbon, nr Sriracha (Hubbon nr. Siracha), S.E. Siam; foot of Khao Soi Dao, Chanthaburi Southeast Thailand, 200 m.
Material Examined: UMRM – Phang Nga Province, Sri Phang Nga National Park, pan light trap behind guest house, 08o58’N 98o27’E, 68 m. FSCA – Siam.
Distribution: Thailand.
description: Published as part of Sanborn, Allen F., Phillips, Polly K. & Sites, Robert W., 2007, Biodiversity, biogeography, and bibliography of the cicadas of Thailand (Hemiptera: Cicadoidea: Cicadidae), pp. 1-46 in Zootaxa 1413 on page 15, DOI: 10.5281/zenodo.175673
title: Erweiterung des Flankengenerators um die Funktionalität "Wälzgefräßte Zahnform"
Creators: name: Arslan, G.
Publisher: name: MyCoRe Community
Year: 2014
Subjects: subject: 600

description: Mitteilungen aus dem Institut für Maschinenwesen der Technischen Universität Clausthal, vol. 39, p. 69
Phtanomiamia gui Chen, Ren
Creators: name: Chen, Lu
name: Ren, Dong
name: BØthoux, Olivier
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Phtanomiamia
Phtanomiamia gui

description: Phtanomiamia gui Chen, Ren and BØthoux sp. nov.
(urn:lsid:zoobank.org: 1AC9FA32-A6B7-4AD8- 9CDA-DADE964B9271
(Fig. 1)
Type species
description: Published as part of Chen, Lu, Ren, Dong & BØthoux, Olivier, 2020, A new, rare and small " lobeattid " species (Insecta: Archaeorthoptera) found at Xiaheyan (Pennsylvanian; Ningxia, China), pp. 71-74 in Fossil Record 23 (1) on page 73, DOI: 10.5194/fr-23-71-2020, http://zenodo.org/record/10965742
Odontacarus (Odontacarus) vergrandi Reed and Brennan 1975
Creators: name: Nielsen, David H.
name: Robbins, Richard G.
name: Rueda, Leopoldo M.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Prostigmata
Leeuwenhoekiidae
Odontacarus
Odontacarus vergrandi

description: Odontacarus (Odontacarus) vergrandi Reed and Brennan, 1975:
NEO
description: Published as part of Nielsen, David H., Robbins, Richard G. & Rueda, Leopoldo M., 2021, Annotated world checklist of the Trombiculidae and Leeuwenhoekiidae (1758 - 2021) (Acari: Trombiculoidea), with notes on nomenclature, taxonomy, and distribution, pp. 1-243 in Zootaxa 4967 (1) on page 17, DOI: 10.11646/zootaxa.4967.1.1, http://zenodo.org/record/4745510
Dundubia crepitans Boulard 2005
Creators: name: Sanborn, Allen F.
name: Phillips, Polly K.
name: Sites, Robert W.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cicadidae
Dundubia
Dundubia crepitans

description: Dundubia crepitans Boulard, 2005 k
Dundubia crepitans, Boulard, 2005 k: 118–121, south Thailand, Province of Ranong, forest of Tougka; Province of Surat Thani, Muang Tuad Namtok.
Distribution: Thailand.
description: Published as part of Sanborn, Allen F., Phillips, Polly K. & Sites, Robert W., 2007, Biodiversity, biogeography, and bibliography of the cicadas of Thailand (Hemiptera: Cicadoidea: Cicadidae), pp. 1-46 in Zootaxa 1413 on page 15, DOI: 10.5281/zenodo.175673
title: Einsatz des UP-Kaltdraht-Verfahrens und geregelter MSG-Prozesstechnik für die Herstellung von Rohren aus der hochwarmfesten Nickelbasislegierung Alloy 617
Creators: name: Reisgen, Uwe
name: Willms, Konrad
name: Jochindke, Stephan
Publisher: name: Shaker
Year: 2015
Subjects: subject: 540

description: Für die Herstellung längsnahtgeschweißter Rohre aus Alloy 617 wurden im Rahmen eines Ziel2.NRW-Forschungsprojektes Strategien für einen geregelten Metallschutz-gas- Schweißprozess und für das Unterpulver-Kaltdraht-Schweißverfahren entwickelt, um wirtschaftliche Alternativen zum heute eingesetzten Wolfram-Inertgas-Schweißverfahren zur Verfügung zu stellen. Bei den Untersuchungen wurde den be-sonderen Anforderungen beim thermischen Fügen dieses Werkstoffes und den Rand-bedingungen bei der Fertigung von längsnahtgeschweißten Rohren für den Einsatz als Dampfleitungen in mit fossilen Brennstoffen betriebenen Kraftwerken Rechnung ge-tragen. So kam eine fertigungsbedingte Steilflanken-Fugengeometrie an einem einseitig zugänglichen, 40 mm dicken Stumpfstoß zur Anwendung. Ferner wurden die Stre-ckenenergien und die Brennerpositionen hinsichtlich der Vermeidung von Heißrissen, Bindefehlern oder Schlackeeinschlüssen optimiert und standen im Fokus der Untersuchungen.
description: Tagungsband : 1. Niedersächsisches Symposium Materialtechnik, 12. bis 13. Februar 2015, Clausthal-Zellerfeld
title: Magnesium Recycling - Entfernung von Nickel aus Magnesium-Aluminium-Legierungen
Creators: name: Duwe, Stephanie
Publisher: name: Shaker
Year: 2015
Subjects: subject: 540

description: Magnesium-Recycling kann bisher nicht im industriellen Maßstab durchgeführt werden, da keine wirtschaftliche Methode existiert, die häufig auftretenden Verunreinigungen durch Nickel (aus Farben, Beschichtungen etc.) zuverlässig zu entfernen. Magnesiumlegierungen werden bereits bei sehr geringen Nickelgehalten stark negativ in ihrem Korrosionsverhalten beeinflusst. In dieser Arbeit wurde eine Reinigung von aluminiumhaltigen Magnesiumschmelzen über die Bildung hochschmelzender intermetallischer Al-Ni-Zr-Phasen durchgeführt, die in einem anschließenden Raffinationsprozess durch Sedimentation entfernt wurden. Es konnten so Nickelgehalte von 100 ppmw erreicht werden; das übrige Nickel wurde in den intermetallischen Phasen abgebunden. Des Weiteren wurden die Ni/Zr-Löslichkeitsisothermen der Magnesiumschmelzen im Gleichgewicht mit intermetallischen Phasen im System Mg-Al-Ni-Zr bei 720 °C für konstante Aluminium-Massenanteile von 3/6/9 und 12 % ermittelt. So wurde eine Möglichkeit gefunden, den Nickelgehalt in Magnesium-Aluminium-Legierungen durch den Einsatz von Aluminium und Zirkonium deutlich zu senken – ein Schritt in Richtung des wirtschaftlichen Magnesiumrecyclings wurde so vollbracht. Des Weiteren stellen die berechneten Löslichkeitsisothermen ein nützliches Werkzeug für die Recycling-Praxis dar.
description: Tagungsband : 1. Niedersächsisches Symposium Materialtechnik, 12. bis 13. Februar 2015, Clausthal-Zellerfeld
title: Standortübergreifende Produktentwicklung im Rahmen der NTH
Creators: name: Langenbach, J.
name: Lohrengel, A.
name: Deiters, A.
name: Lachmayer, R.
name: Inkermann, D.
name: Vietor, T.
Publisher: name: MyCoRe Community
Year: 2014
Subjects: subject: 600

description: Mitteilungen aus dem Institut für Maschinenwesen der Technischen Universität Clausthal, vol. 39, p. 83
Dundubia intemerata Walker 1857
Creators: name: Sanborn, Allen F.
name: Phillips, Polly K.
name: Sites, Robert W.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cicadidae
Dundubia
Dundubia intemerata

description: Dundubia intemerata Walker, 1857
Dundubia intemerata, Boulard, 2003e: 172, 182–183, north Thailand, around area of Chiang Mai and Wiang Papao.
Notes: Some specimens were transferred to D. terpischore (Walker, 1850) (Overmeer & Duffels 1967) but Boulard (2003e) determined D. intermerata to be a valid species found in the north.
Material Examined: UMRM – Chiang Mai Province, Chiang Doi N.P., Nam Tok Sri Sungwan, 600 m, 19o 37’N 98o 57’E.
Distribution: India, Burma, Laos, Malaysia, Indonesia, and Borneo (Metcalf, 1963a) and Thailand; but specimens from the southern locations are probably Dundubia terpsichore (Walker, 1850) (Overmeer and Duffels, 1967).
description: Published as part of Sanborn, Allen F., Phillips, Polly K. & Sites, Robert W., 2007, Biodiversity, biogeography, and bibliography of the cicadas of Thailand (Hemiptera: Cicadoidea: Cicadidae), pp. 1-46 in Zootaxa 1413 on page 16, DOI: 10.5281/zenodo.175673
title: Strain analysis in sandwich structures using digital image correlation
Creators: name: Hartmann, Stefan
name: Sguazzo, Carmen
Publisher: name: Shaker
Year: 2015
Subjects: subject: 540

description: Sandwich structures are composed by different thin-layered materials. One example is a sandwich made of metal - polymer - metal layers, where the internal polymer layer is given by a polypropylene-polyethylene (PP/PE) foil. In experimental observations it turns out that an emerging strain localization requires the entire field information. The application of Digital Image Correlation (DIC) is common in measuring the surface strains of mechanically loaded specimens. However, the literature – both in scientific publications as well as the theory manuals of the providers – leave the question open how the detailed formulation
of the strains in the curvilinear setting has to be performed. In this short essay, the fundamentals are discussed, where we draw on surface descriptions developed in the context of finite elements. A second topic treats the strain determination on the surface of finite elements, since for the case of material parameter identification the displacements or even the strains are required for the solution of the entire boundary-value problem. Even here, the strains on the surface of three-dimensional element formulations are not provided by most commercial finite element programs. Thus, the concept of strain determination is transferred to the output of finite element programs as well.
description: Tagungsband : 1. Niedersächsisches Symposium Materialtechnik, 12. bis 13. Februar 2015, Clausthal-Zellerfeld
TaintImpact: Taint-Based Change Impact Analysis
Creators: name: Lüscher, Tobias
Publisher: name: ETH Zurich
Year: 2021

description: Code reviews are an essential part of software development. In order
to successfully perform code reviews, developers need to understand
the impact of code changes thoroughly. However, understanding this
impact is a notoriously difficult task. Therefore, we introduce TaintImpact.
TaintImpact supports developers in the task of code reviews by
showing the impact of a change. More specifically, TaintImpact starts
with a git commit and then computes an impact set of the change using
dynamic taint analysis. Further, we introduce dynamic blame, a tool
that extends git blame to not only show the commit that last modified
a given line, but also to show the commit that last impacted a given
line. We have evaluated TaintImpact on three artificially produced examples
and on a real-world bug. The results show that TaintImpact
helps developers to focus their attention on parts of the code that are
not obviously impacted by a change. Further, comparing the impact
sets of different program configurations supports developers in finding
bugs in software changes.
Dundubia kebuna Moulton 1923
Creators: name: Sanborn, Allen F.
name: Phillips, Polly K.
name: Sites, Robert W.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cicadidae
Dundubia
Dundubia kebuna

description: Dundubia kebuna Moulton, 1923
Dundubia kebuna, Overmeer and Duffels, 1967: 33, 53–55, Nakron Sri Tamerat, Siamese Malaya, Siam. Dundubia kebuna, Bloem and Duffels 1976: 148 –149, Peninsular Siam Nakon Sri Tamarat Khad Ram, Tai Sai River; Siam, Ronpibun.
Material Examined: UMRM – Phang Nga Province, Sri Phang Nga National Park, pan light trap behind guest house, 08o58’N 98o27’E, 68 m.
Distribution: Thailand and Malaysia (Metcalf, 1963a; Duffels and van der Laan, 1985).
description: Published as part of Sanborn, Allen F., Phillips, Polly K. & Sites, Robert W., 2007, Biodiversity, biogeography, and bibliography of the cicadas of Thailand (Hemiptera: Cicadoidea: Cicadidae), pp. 1-46 in Zootaxa 1413 on page 16, DOI: 10.5281/zenodo.175673
Serrundabracon
Creators: name: Quicke, Donald L. J.
name: Butcher, Buntika A.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Braconidae
Serrundabracon

description: Key to the species of Serrundabracon
1. Ovipositor strongly widened and distalmost two arches strongly dorso-ventrally compressed, apically sharply pointed (Fig. 1 F); face largely coriaceous, with only weak transverse rugae (Fig. 1 A); frons entirely yellow (Fig. 1 B); median triangular area of tergite 2 with margins weakly concave (Fig. 1 D); metasoma more finely rugulose to rugulose-foveolate, second suture narrower (Fig. 1 D); metasomal tergite 5 with posterior margin, not emarginate
medially or laterally (Fig. 1 E); antenna with more than 55 [58] flagellomeres .......................... S. rosalindae sp. nov. -. Ovipositor evenly narrow in dorsal view, the most posterior arch more than 1.8 × the penultimate one (Fig. 3 C); face with strong transverse rugae (Fig. 2 D); frons black medially (Fig. 2 C); mid-basal triangular area of tergite 2 with sides distinctly convex (Fig. 3 A); metasomal tergites more coarsely rugose to foveate-rugose, 2nd suture broader (Fig. 3 A); metasomal tergite 5 with posterior margin distinctly, though narrowly emarginated medially and broadly emarginate laterally; antenna with fewer than 55 [49] flagellomeres .............................................. S. maraisai (Braet)
description: Published as part of Quicke, Donald L. J. & Butcher, Buntika A., 2015, A new species of the genus Serrundabracon van Achterberg (Hymenoptera: Braconidae: Braconinae) from Namibia, pp. 141-146 in Zootaxa 4000 (1) on pages 142-143, DOI: 10.11646/zootaxa.4000.1.9, http://zenodo.org/record/235058
title: Methoden zur Abschätzung zyklischer Werkstoffkennwerte
Creators: name: Wächter, Michael
name: Esderts, Alfons
name: Masendorf, Rainer
Publisher: name: Shaker
Year: 2015
Subjects: subject: 600

description: Zyklische Kennwerte können z.B. mithilfe des Uniform Material Law (UML) aus der Zugfestigkeit abgeschätzt werden. Das UML gilt für einen eingeschränkten Bereich von un- und niedriglegierten Stählen. Mithilfe einer großen Datenbasis wird die Treffsicherheit des UML bewertet und eine neuen Abschätzmethode abgeleitet, die für die gesamte Werkstoffgruppe der Stähle (ausgenommen Stahlguss) gilt. Für die aus der abgeschätzten Dehnungswöhlerlinie bestimmte PSWT-Schädigungsparameter-Wöhlerlinie wird ein Konzept zur Umrechnung auf eine Ausfallwahrscheinlichkeit von 2,5 % angegeben.
description: Tagungsband : 1. Niedersächsisches Symposium Materialtechnik, 12. bis 13. Februar 2015, Clausthal-Zellerfeld
Serrundabracon rosalindae Quicke & Butcher, 2015, sp. nov.
Creators: name: Quicke, Donald L. J.
name: Butcher, Buntika A.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Braconidae
Serrundabracon
Serrundabracon rosalindae

description: Serrundabracon rosalindae sp. nov.
(Fig. 1)
Holotype female “ NAMIBIA, Roy’d Rest Camp, 58km NE Grootfontein. 1200m 19.229635S 18.496070E, 29– 30.XII.12 S. Murzin leg.”.
Length of body 8.1 mm, of fore wing 6.5 mm, and of antenna approximately 7 mm.
Description. Essentially as for S. maraisi as described by Braet (1999) and re-description (van Achterberg 2003) except for the characters given in the key above. The female holotype is slightly larger than the holotype of S. maraisai and the 2nd specimen recorded here, but since braconines (with some unrelated exceptions) are idiobiont ectoparasitoids, they typically show quite marked intraspecific size variation.
Etymology. The species is named as a lasting memorial to Rosalind Hardie, beloved wife of the junior author’s friend, Professor Jim Hardie.
description: Published as part of Quicke, Donald L. J. & Butcher, Buntika A., 2015, A new species of the genus Serrundabracon van Achterberg (Hymenoptera: Braconidae: Braconinae) from Namibia, pp. 141-146 in Zootaxa 4000 (1) on pages 143-144, DOI: 10.11646/zootaxa.4000.1.9, http://zenodo.org/record/235058
title: Einfluss der Nabengeometrie auf die Tragfähigkeit von Zahnwellenverbindungen nach DIN 5480
Creators: name: Schäfer, G.
name: Wild, J.
Publisher: name: MyCoRe Community
Year: 2015
Subjects: subject: 600

description: Mitteilungen aus dem Institut für Maschinenwesen der Technischen Universität Clausthal, vol. 40, p. 29
Serrundabracon maraisai Braet
Creators: name: Quicke, Donald L. J.
name: Butcher, Buntika A.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Braconidae
Serrundabracon
Serrundabracon maraisai

description: Serrundabracon maraisai (Braet)
(Figs 2, 3)
Material examined. 1 female, “ NAMIBIA S,. Hardap distr. 7km W Mariental, Koha GH 1250m, 1- 10.01.2012, S.Murzin leg.”.
Notes. Van Achterberg (2003) provided line drawings of S. maraisi to complement the environment chamber electron microscope illustrations in Braet’s original paper (Braet 1999). It is important to note that the density of sculpturation illustrated for the metasomal tergites, particularly the T2+3 syntergum, differs somewhat in apparent coarseness between the two, such that we initially thought that we had two new species of the genus. Having carefully considered our material and the descriptions, we are confident that we have at hand only the 2nd recorded specimen of S. maraisi plus a second specimen representing a new species, also from Namibia, which we describe below. Further, van Achterberg states that the lower ovipositor valve lacks the typical serrations of ectoparasitoid braconines, but our specimen clearly has numerous small serrations, but we think that van Achterberg missed these because in the type specimen, the lower valve was largely concealed and the serrations fine, whereas in our new specimen the valves have become somewhat separated distally making observation easier. Interestingly, the long series of serrations are very similar to what is found in Zaglyptogastra spathulata (Szépligeti) (see Fig. 36 in Quicke 1991a). Van Achterberg’s description also states that the length of the ovipositor sheath is “about 0.8 × fore wing”, however, from his figures 1 and 7, which are drawn to the same scale according to the figure legend, it is clear that they are of almost exactly equal length. In the specimen at hand, the ovipositor sheath is also almost exactly the same length as the fore wing.
description: Published as part of Quicke, Donald L. J. & Butcher, Buntika A., 2015, A new species of the genus Serrundabracon van Achterberg (Hymenoptera: Braconidae: Braconinae) from Namibia, pp. 141-146 in Zootaxa 4000 (1) on page 145, DOI: 10.11646/zootaxa.4000.1.9, http://zenodo.org/record/235058
title: Prozessmodellierung in der metallurgischen Prozesstechnik
Creators: name: Wendelstorf, Jens
Publisher: name: Shaker
Year: 2015
Subjects: subject: 600

description: Unter ständig wechselnden Anforderungen erfordert die Gestaltung optimaler Prozesse in der Verfahrenstechnik und der Werkstofftechnik den Einsatz von Prozessmodellen. Dazu werden deren Zweck, Definition, Genese und Qualitätssicherung diskutiert. An Beispielen werden wesentliche Aspekte der Modellgewinnung und des Modelleinsatzes demonstriert. Ein Kühlstreckenmodell zeigt das Zusammenspiel von Labormessungen und mathematischer Modellierung zur Lösung betrieblicher Fragestellungen mit Hilfe von Prozessmodellen. Für die Schalenbildung bei Stranggießen von Stahl wird gezeigt, dass auch für komplexe ortsaufgelöste FEM-Modelle eine Sensitivitätsanalyse durchführbar ist. Das letzte Beispiel beschäftigt sich mit der Modellparametrierung von Online-Modellen mit Hilfe von Betriebsdaten.
description: Tagungsband : 1. Niedersächsisches Symposium Materialtechnik, 12. bis 13. Februar 2015, Clausthal-Zellerfeld
Dundubia nagarasingha Distant 1881
Creators: name: Sanborn, Allen F.
name: Phillips, Polly K.
name: Sites, Robert W.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cicadidae
Dundubia
Dundubia nagarasingha

description: Dundubia nagarasingha Distant, 1881
Platylomia nagarasingna, Kato, 1940: 3, Chiengmai, Thailand.
Dundubia bifasciata, Ishihara, 1961: 225, Pl 1.1, Mae Klang.
Platylomia nagarasingna, Gogala, 1995: 101, 104, 106, 111, Hat Yai, southern Thailand.
Platylomia sp., Gogala, 1995: 101, 102, 104, 107, near Mae Hong Son and Nam Mae Chao Fa, northern Thailand. Platylomia sp. = P. nagarasingna Beuk (1996).
Dundubia nagarasingna, Beuk, 1996: 137 –138, 147–153, Bangkok, Bang Khen 13o 52’00”N 100o 36’00”E; Chiengmai (Chiang Mai), 1100–1500 m; Chiangrai (Chiang Rai); Hat Yai (Ban Hat Yai); Nonthaburi; Patong Beach, Phuket; Prov. Pachim (Prachin Buri); Sakaerat (Ban Huai Sakae Rat), Khorat Prov., 300–400 m; Siam; Kanchanaburi Dist., Naklud, Prov. Chonburi, ca. 150 km Z.O. van (Southeast of) Bangkok.
Platylomia nagarasingna, Boulard, 2000b: 50, 51–55, mountainous northern part of Thailand; Mae Hong Son, within the town and the mountain that makes up the border of Thailand and Burma, 1500 m.
Platylomia nagarasingna, Boulard, 2001d: 128, 133, 141–144, vicinity of Mae Hong Son.
Dundubia nagarasingna, Boulard, 2003e: 178, Province of Chiang Mai, la forêt “Pha Chang Mok”.
Taxonomy: Dundubia bifasciata Liu, 1940 was synonymized with D. hainanensis (Distant, 1901) by Beuk (1996), but this species is not found in Thailand. The Thai specimens of D. bifasciata were transferred to D. nagarasingha by Beuk (1996).
Material Examined: UMRM – Sakon Nakhon Prov., Phu Pan National Park, guest house, 314 m 7°03’N 103°58’E; Thailand (illegible: looks like Wo); Thailand (illegible: looks like Nün); Mae Hong Song Province, Namtok Mae Surin NP, Mae Nam Pai; 19o 21’ N 97o 59’ E, 310 m; Chiang Mai Province, Chiang Dao NP, Nam Tok Sri Sungwan, 600 m, 19o 37’ N 98o 57’E; Ubon Ratchathani Prov., Phu Chong Na Yoi National Park, 231 m, 14o26.125’N 105o15.360’E; Phuket Prov., Patong.
Distribution: Thailand, Burma, India, Indochina, and China (Metcalf, 1963b).
description: Published as part of Sanborn, Allen F., Phillips, Polly K. & Sites, Robert W., 2007, Biodiversity, biogeography, and bibliography of the cicadas of Thailand (Hemiptera: Cicadoidea: Cicadidae), pp. 1-46 in Zootaxa 1413 on page 16, DOI: 10.5281/zenodo.175673
Exploring self-supervised learning techniques for hand pose estimation
Creators: name: Dahiya, Aneesh
Publisher: name: ETH Zurich
Year: 2021
Subjects: 3D hand pose estimation
Self supervision
info:eu-repo/classification/ddc/004
Data processing, computer science

description: Estimating 3D hand pose from a monocular RGB image is a challenging task.  This is largelydue to the limited amount of available labeled data,  as annotating images for 3D hand poserequires a complex multi-camera setup and a controlled lab-like setting. This in turn introducesa domain gap between the different hand pose datasets and the unconstrained settings of thereal world.  In this thesis, we develop a self-supervised method to use unlabeled data from dif-ferent hand pose datasets to improve the accuracy of 3D hand pose estimation, and to bridgethe domain gap.  We propose a novel contrastive learning framework for pose estimation, in-spired by the recent success of contrastive learning on image classification tasks. In a standardcontrastive learning framework, a model tries to learn a feature representation that is invariantunder any image augmentation.  This can be beneficial, as the pose is invariant to appearancebased image augmentations. However, geometric augmentations (like rotation) change the poseequivariantly.  However using geometric augmentations with contrastive self-supervision leadsto invariance.  This can be detrimental to the pose estimation.  We empirically show that thefeatures learned with our equivariant contrastive framework lead to more improvement whencompared to standard contrastive frameworks. Furthermore, we attain an improvement of7.6%in PA MKP-3D on FreiHAND with a standard ResNet-152, trained with additional unlabeleddata when compared to a fully supervised baseline.  This enables us to achieve state-of-the-artperformance in a purely data driven way, without any task-specific specialized architecture.
Ergebnisse LehrstellenPuls Mai 2021
Creators: name: Bolli, Thomas
name: Caves, Katherine Marie
name: Pusterla, Filippo
name: Rageth, Ladina
name: Renold, Ursula
name: Sritharan, Aranya
name: Trachsel Díaz-Tejeiro, Sandra
Publisher: name: ETH Zurich
Year: 2021
Subjects: Berufsbildung
Lehrstellen
Corona

description: LehrstellenPuls – Faktenblatt
title: Erzeugung dünner Funktionsschichten mittels plasmaunterstützter chemischer Gasphasenabscheidung
Creators: name: Dahle, Sebastian
name: Kunz, Cornelia
name: Sonnenberg, Maria
name: Maus-Friedrichs, Wolfgang
name: Weber, Alfred
Publisher: name: Shaker
Year: 2015
Subjects: subject: 540

description: Die Anwendung von Plasmen zur Beschichtung von Oberflächen bietet großes Potential, bestehende Prozesse zu vereinfachen und neuartige Funktionsoberflächen zu erzeugen. Durch die Verwendung von Plasmen können einfachere, kostensparende und besser handhabbare Arbeitsgase als in der klassischen chemischen Gasphasenabscheidung verwendet werden. Gleichzeitig steigert die Anwendung von Plasmen die Reaktions- und somit die Prozessgeschwindigkeit oftmals erheblich, und bietet die Möglichkeit, neue und vereinfachte Wege der Oberflächenbehandlung zu erschließen.
Der Vortrag gibt einen kurzen Einblick in die Möglichkeiten der plasmaunterstützten chemischen Gasphasenabscheidung metallischer, anorganischer und organischer Schichten. Anhand aktueller Ergebnisse und Projekte aus dem Bereich des Clausthaler Zentrums für Materialtechnik werden dabei typische Schwierigkeiten und Lösungsstrategien für die technische Umsetzung präsentiert.
description: Tagungsband : 1. Niedersächsisches Symposium Materialtechnik, 12. bis 13. Februar 2015, Clausthal-Zellerfeld
Odontacarus (Odontacarus) xishana Wen and Xiang 1984
Creators: name: Nielsen, David H.
name: Robbins, Richard G.
name: Rueda, Leopoldo M.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Prostigmata
Leeuwenhoekiidae
Odontacarus
Odontacarus xishana

description: Odontacarus (Odontacarus) xishana Wen and Xiang, 1984 q:
PAL
description: Published as part of Nielsen, David H., Robbins, Richard G. & Rueda, Leopoldo M., 2021, Annotated world checklist of the Trombiculidae and Leeuwenhoekiidae (1758 - 2021) (Acari: Trombiculoidea), with notes on nomenclature, taxonomy, and distribution, pp. 1-243 in Zootaxa 4967 (1) on page 17, DOI: 10.11646/zootaxa.4967.1.1, http://zenodo.org/record/4745510
Myrmedonota shimmerale Mathis & Eldredge, sp. n.
Creators: name: Mathis, Kaitlyn A.
name: Eldredge, K. Taro
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Myrmedonota
Myrmedonota shimmerale

description: Myrmedonota shimmerale Mathis & Eldredge, sp. n.
Type series. Holotype, male: MEXICO: Chiapas: Finca Irlanda Biological Station (15° 11′ N, 92° 20′ W) 25.ix.2012, on sticky trap, coll. K. Mathis. Paratypes: 10, same data as holotype.
Etymology. The name refers to the dull green iridescence of the integument that makes the beetle appear to shimmer in light.
Diagnosis. This species can be distinguished from all other species of New World Myrmedonota by its dull iridescent green integument, small size, presence of a shallow basomedial impression on the pronotum, form of the aedeagus and spermatheca.
Description. Body (Fig. 1) compact-slender and subparallel. Length with a mean of 2.09 mm (n = 5), color yellowish to black, integument overall shining with a dull green iridescence. Head, pronotum and abdominal tergites III–VII black; elytra black to light brown; abdominal tergites I–II yellowish light brown to black; mouthparts, legs yellowish to black; antennae black, segments I–III may be yellowish light brown to yellowish brown.
Legs short; hind tibia 0.785 times as long as the elytral width. Macrosetae less prominent; antennal macrosetae 1.8 times the width of antenomeres.
Male. Median lobe (Figs. 2–3) somewhat limuloid in parameral view; apical lobe gently curved paramerally in lateral view, pointed at apex in lateral and parameral views; copulatory piece wide, apically subulate and base with lateral paired rounded arms, annulus large and laterally wide; comb of teeth present, directed paramerally in lateral view and apical of copulatory piece. Tergite VIII apicomedially concave and margin variably serrate. Female. Spermatheca (Fig. 4) curved twice. Mildly S-shaped. Internal cone with circumventral sculptural grooves.
description: Published as part of Mathis, Kaitlyn A. & Eldredge, K. Taro, 2014, Descriptions of two new species of Myrmedonota Cameron (Staphylinidae: Aleocharinae) from Mexico with comments on the genus taxonomy and behavior, pp. 95-100 in Zootaxa 3768 (1) on pages 97-98, DOI: 10.11646/zootaxa.3768.1.7, http://zenodo.org/record/226119
Dundubia nigripes Moulton 1923
Creators: name: Sanborn, Allen F.
name: Phillips, Polly K.
name: Sites, Robert W.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cicadidae
Dundubia
Dundubia nigripes

description: Dundubia nigripes (Moulton, 1923) new record
Material Examined: UMRM – Songkhla Prov., Ton Nga Chang Wildlife Sanctuary at Buddist temple, 06°56'N 100°15'E, 44 m. PSUC – Prince of Songkla University, Amphur Hat Yai, Songkhla Province, 07°00'N 100°30'E, 58 m; Songkhla Prov., Ton Nga Chang Wildlife Sanctuary, 06°56'N 100°15'E.
Distribution: Malaysia (Metcalf, 1963a) and Thailand.
description: Published as part of Sanborn, Allen F., Phillips, Polly K. & Sites, Robert W., 2007, Biodiversity, biogeography, and bibliography of the cicadas of Thailand (Hemiptera: Cicadoidea: Cicadidae), pp. 1-46 in Zootaxa 1413 on page 17, DOI: 10.5281/zenodo.175673
title: Erfahrungen aus einem Jahr Techniker2Bachelor - Offene Hochschule
Creators: name: Kasüschke, L.
name: Friedland, J.
Publisher: name: MyCoRe Community
Year: 2015
Subjects: subject: 600

description: Mitteilungen aus dem Institut für Maschinenwesen der Technischen Universität Clausthal, vol. 40, p. 123
Closing the gap between word and character based language models using fixed and learned hierarchies
Creators: name: Graziano, Filippo
Publisher: name: ETH Zurich
Year: 2021

description: Language Modeling (LM) is a complex task that has been preferably addressed with word level RNNs and, recently, attention-based models. LM at character level has shown inferior performance as it entails more complex training, but it also brings along several desirable conceptual modelling advantages such as no closed-vocabulary limitation and better exploitation of words' similarities.  In this work we identify the main causes of the performance gap between word and character level LM and we propose solutions to address them. Our experiments make up considerable ground to word level models; we prove that the input can be processed at character level without losing anything in performance and that processing the output at character level results only in a minor performance loss.  We also investigate the problem of learning the hierarchical structure of data in a totally unsupervised fashion. We propose a novel approach to learn the segmentation based on the Gumbel Softmax Reparameterization for Bernoulli variables. We have successfully evaluated our model on natural language tasks (PTB, text8) as well as on other types of data, e.g. xml dumps (enwik8) and images (MNIST, CIFAR10).