cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Combined Numerical and Experimental Investigation on Deterministic Deviations in Hot Forging Processes
Creators: name: Behrens, Bernd-Arno
name: Volk, Wolfram
name: Maier, Daniel
name: Scandola, Lorenzo
name: Ott, Michael
name: Brunotte, Kai
name: Büdenbender, Christoph
name: Till, Michael
Publisher: name: Amsterdam [u.a.] : Elsevier
Year: 2020
Subjects: subject: Bulk forming
subject: Deviation
subject: Geometrical compensation
subject: Numerical simulation
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: In hot forging processes, geometry of the formed workpieces deviate from the desired target geometry, due to complex interactions between tools and billets which result in inhomogeneous temperature and stress fields. The resulting deviation can only be mapped insufficiently by using numerical simulation which makes it difficult to be considered when designing the tool. Therefore, the development of forging tools requires an iterative adaptation process through a large number of revisions in the tool geometry, which escalates the resulting costs. To compensate the deviations and reduce the number of tool revisions, a holistic view of the influencing factors on the geometrical deviation is necessary. In order to address this issue, a hot forging process was developed, whose geometry is prone to high deviations, and a stress-based compensation model was applied. For this, forging experiments were carried out and a comparison was made between the actual geometry and the desired one by means of 3D coordinate measurements. The compensation methodology, which directly takes into account the complex 3D stress states during forming, allows to determine a compensating tool geometry. This opened up the possibility of validating the simulation results and testing a compensation model while eliminating deterministic deviations in hot forging processes.
On a family of fully nonlinear integro-differential operators: From fractional Laplacian to nonlocal Monge-Ampère
Creators: name: Caffarelli, Luis A.
name: Soria-Carro, María
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: Primary: 35J60. Secondary: 35B65, 35J96

description: We introduce a new family of intermediate operators between the fractional Laplacian and the Caffarelli-Silvestre nonlocal Monge-Ampère that are given by infimums of integro-differential operators. Using rearrangement techniques, we obtain representation formulas and give a connection to optimal transport. Finally, we consider a global Poisson problem, prescribing data at infinity, and prove existence, uniqueness, and $C^{1,1}$-regularity of solutions in the full space.
description: 32 pages, 2 figures. To appear in Analysis & PDE
ERIC Forum Draft Policy Report - 1
Creators: name: WP6 Task Force
Publisher: name: Zenodo
Year: 2020

description: This preliminary draft of the first ERIC Forum policy report, presents the collaborative work of the ERIC Forum on a key topic of common interest. Focusing on Funding models for access to ERIC multinational/transnational services, this policy report analyses the current landscape of funding models across ERICs. It presents their diversity, and highlights how ERICs have successfully made use of a panoply of mechanisms to support access to their services. The report also identifies key areas for opportunities, to enhance the impact of ERICs, broadening their access to funding mechanisms and boosting their visibility. This draft will continue to evolve, as the dedicated Task Force continues editing and drafting. The report will be finalized, in collaboration with key stakeholders, during a dedicated seminar in Q4 of 2020.
Optical monitoring of the gravitationally lensed quasar Q2237+0305 from APO between June 1995 and January 1998
Creators: name: Schmidt, R. W.
name: Kundic, T.
name: Pen, U. -L.
name: Turner, E. L.
name: Wambsganss, J.
name: Bergeron, L. E.
name: Colley, W. N.
name: Corson, C.
name: Hastings, N. C.
name: Hoyes, T.
name: Long, D. C.
name: Loomis, K. A.
name: Malhotra, S.
name: Rhoads, J. E.
name: Stanek, K. Z.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a data set of images of the gravitationally lensed quasar Q2237+0305, that was obtained at the Apache Point Observatory (APO) between June 1995 and January 1998. Although the images were taken under variable, often poor seeing conditions and with coarse pixel sampling, photometry is possible for the two brighter quasar images A and B with the help of exact quasar image positions from HST observations. We obtain a light curve with 73 data points for each of the images A and B. There is evidence for a long (>~ 100 day) brightness peak in image A in 1996 with an amplitude of about 0.4 to 0.5 mag (relative to 1995), which indicates that microlensing has been taking place in the lensing galaxy. Image B does not vary much over the course of the observation period. The long, smooth variation of the light curve is similar to the results from the OGLE monitoring of the system (Wozniak et al. 2000a).
description: 8 pages, 5 figures; accepted for publication in A&A
Global well-posedness for the Euler alignment system with mildly singular interactions
Creators: name: An, Jing
name: Ryzhik, Lenya
Publisher: name: arXiv
Year: 2019
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We consider the Euler alignment system with mildly singular interaction kernels. When the local repulsion term is of the fractional type, global in time existence of smooth solutions was proved in\cite{do2018global,shvydkoy2017eulerian1,shvydkoy2017eulerian2,shvydkoy2017eulerian3}. Here, we consider a class of less singular interaction kernels and establish the global regularity of solutions as long as the interaction kernels are not integrable. The proof relies on modulus of continuity estimates for a class of parabolic integro-differential equations with a drift and mildly singular kernels.
description: 29 pages
Development of a modified tool system for lateral angular co-extrusion to improve the quality of hybrid profiles
Creators: name: Behrens, Bernd-Arno
name: Uhe, Johanna
name: Thürer, Susanne Elisabeth
name: Klose, Christian
name: Heimes, Norman
Publisher: name: Amsterdam [u.a.] : Elsevier
Year: 2020
Subjects: subject: Aluminium
subject: Co-Extrusion
subject: Finite Element (FE) Simulation
subject: Hybrid Profile
subject: Steel
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: The application of monomaterials is limited in lightweight construction concepts, because in addition to the weight requirements, the thermal and mechanical demands are constantly increasing. In order to ensure that the right material is used in the right place, the Collaborative Research Centre (CRC) 1153 is concerned with research into innovative process chains that lead to components with locally adapted properties. The lateral angular co-extrusion approach (LACE) allows the manufacturing of hybrid semi-finished products from aluminium alloy EN AW-6082 and steel AISI 5120. Throughout the LACE process, the steel tube is inserted into the extrusion die at an angle of 90° to the pressing direction, where it is covered in aluminium. The coaxial semi-finished products are subsequently formed into a hybrid bearing bushing by die forging. In this study, the LACE process is investigated on an industrial scale using a 10 MN extrusion press. The investigations are carried out by means of finite element (FE) simulation and are validated by a comparison with experimental results. The focus of this study is on the design and improvement of the aluminium material flow. The two major challenges of hybrid profile extrusion are the straightness of the extruded profile and, particularly in this study, the coaxial position of the support element. Within the numerical design process, different mandrel positions and chamber geometries are considered in terms of their influence on the profile quality. The numerically determined tool geometries are subsequently used for experimental investigations using the 10 MN extrusion press. The extruded hybrid profiles are compared with results of the numerical simulations. For the validation of the numerical model, metallographic analyses of the hybrid profiles as well as experimental extrusion force-time curves are used. Based on these results, the final mandrel position and chamber geometries are chosen and serve as a basis for further co-extrusion experiments.
Feed-Forward Neural Networks Need Inductive Bias to Learn Equality Relations
Creators: name: Weyde, Tillman
name: Kopparti, Radha Manisha
Publisher: name: arXiv
Year: 2018
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Basic binary relations such as equality and inequality are fundamental to relational data structures. Neural networks should learn such relations and generalise to new unseen data. We show in this study, however, that this generalisation fails with standard feed-forward networks on binary vectors. Even when trained with maximal training data, standard networks do not reliably detect equality.We introduce differential rectifier (DR) units that we add to the network in different configurations. The DR units create an inductive bias in the networks, so that they do learn to generalise, even from small numbers of examples and we have not found any negative effect of their inclusion in the network. Given the fundamental nature of these relations, we hypothesize that feed-forward neural network learning benefits from inductive bias in other relations as well. Consequently, the further development of suitable inductive biases will be beneficial to many tasks in relational learning with neural networks.
description: Relational Representation Learning Workshop, NeurIPS 2018
Cycle counting of roller bearing oscillations – case study of wind turbine individual pitching system
Creators: name: Stammler, Matthias
name: Reuter, Andreas
name: Poll, Gerhard
Publisher: name: Amsterdam [u.a.] : Elsevier Science
Year: 2018
Subjects: subject: Dynamic loads
subject: Random processes
subject: Risk perception
subject: Stochastic systems
subject: Time series
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: The amplitude, frequency and number of oscillating movements have a significant impact on the possible damage modes of rolling bearings. Changes in amplitude change both the fatigue and wear risk of the raceways. In order to properly calculate the fatigue lifetime of an oscillating bearing, estimate the risk of surface-induced damage modes and design test programs for such bearings, it is necessary to understand the characteristics of the oscillating movements. This paper presents a comprehensive method for the analysis of time series data including position and loads. The method is applied to the simulated time-series data of the IWT 7.5-164 reference wind turbine. Wind turbine blades typically experience wide-band dynamic loads due to stochastic wind conditions. Therefore, it is important to use time series based cycle counting methods.
Numerical and Experimental Investigation of Thermoplastics in Multi-Axis Forming Processes
Creators: name: Dröder, Klaus
name: Behrens, Bernd-Arno
name: Bohne, Florian
name: Chugreev, Alexander
name: Schulze, Henrik
name: Wonnenberg, Birk
Publisher: name: Amsterdam [u.a.] : Elsevier
Year: 2019
Subjects: subject: Fiber reinforced plastic
subject: Finite element methode (FEM)
subject: Forming
subject: Kinematic
subject: Temperature
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::670 | Industrielle und handwerkliche Fertigung

description: Process planning for multi-axis forming presses is a particular challenge. This process provides the option to actively influencing the material flow in the forming process by defining a six dimensional tool motion path and the tool velocity. By comprehending this interaction, it is possible to control and thereby tailor the induced local material properties of the workpiece. Experiments were conducted with a multi-axis press, which is based on a Stewart platform. A simple plane workpiece geometry is chosen to analyse the flow behaviour and the temperature evolution of the glass mat thermoplastics (GMT) during the forming process. Subsequently, a numerical simulation of the multi-axis forming process is carried out and validated with the experimental data. The numerical analysis focuses on the material modelling as well as the prediction of the flow characteristics. Regarding material modelling of GMT, an extensive material characterization is performed to describe the flow behaviour. A prediction of the flow behaviour of GMT with reference to tool motion is enabled. For the FE simulation the element-free Galerkin method (EFG) is applied for modelling the fluid structure interaction and adaptive procedures.
Electron scattering states at solid surfaces calculated with realistic potentials
Creators: name: Lorenz, S.
name: Solterbeck, C.
name: Schattke, W.
name: Burmeister, J.
name: Hackbusch, W.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Scattering states with LEED asymptotics are calculated for a general non-muffin tin potential, as e.g. for a pseudopotential with a suitable barrier and image potential part. The latter applies especially to the case of low lying conduction bands. The wave function is described with a reciprocal lattice representation parallel to the surface and a discretization of the real space perpendicular to the surface. The Schroedinger equation leads to a system of linear one-dimensional equations. The asymptotic boundary value problem is confined via the quantum transmitting boundary method to a finite interval. The solutions are obtained basing on a multigrid technique which yields a fast and reliable algorithm. The influence of the boundary conditions, the accuracy and the rate of convergence with several solvers are discussed. The resulting charge densities are investigated.
description: 5 pages, 4 figures, copyright and acknowledgment added, typos etc. corrected
Two-boundary problems in Euclidean quantum gravity
Creators: name: Esposito, Giampiero
name: Kamenshchik, Alexander Yu.
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Recent work in the literature has studied a new set of local boundary conditions for the quantized gravitational field, where the spatial components of metric perturbations, and ghost modes, are subject to Robin boundary conditions, whereas normal components of metric perturbations obey Dirichlet boundary conditions. Such boundary conditions are here applied to evaluate the one-loop divergence on a portion of flat Euclidean four-space bounded by two concentric three-spheres.
description: 19 pages, plain Tex
A Low-Temperature Approach for the Phase-Pure Synthesis of MIL-140 Structured Metal–Organic Frameworks
Creators: name: Schulz, Marcel
name: Marquardt, Nele
name: Schäfer, Malte
name: Warwas, Dawid Peter
name: Zailskas, Saskia
name: Schaate, Andreas
Publisher: name: Weinheim : Wiley-VCH
Year: 2019
Subjects: subject: hybrid materials
subject: metal–organic frameworks
subject: MIL-140
subject: phase purity
subject: synthesis field diagrams
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: In a systematic investigation, the synthesis of metal–organic frameworks (MOFs) with MIL-140 structure was studied. The precursors of this family of MOFs are the same as for the formation of the well-known UiO-type MOFs although the synthesis temperature for MIL-140 is significantly higher. This study is focused on the formation of Zr-based MIL-140 MOFs with terephthalic acid (H2bdc), biphenyl-4,4′-dicarboxylic acid (H2bpdc), and 4,4′-stilbenedicarboxylic acid (H2sdc) and the introduction of synthesis field diagrams to discover parameters for phase-pure products. In this context, a MIL-140 network with H2sdc as linker molecule is first reported. Additionally, an important aspect is the reduction of the synthesis temperature to make MIL-140 MOFs more accessible even though linkers with a more delicate nature are used. The solvothermal syntheses were conducted in highly concentrated reaction mixtures whereby a targeted synthesis to yield the MIL-140 phase is possible. Furthermore, the effect of the often-used modulator approach is examined for these systems. Finally, the characteristics of the synthesized MOFs are compared with physisorption measurements, thermogravimetric analyses, and scanning electron microscopy.
Semi-infinite cohomology and superconformal algebras
Creators: name: Poletaeva, Elena
Publisher: name: arXiv
Year: 2000
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We describe representations of certain superconformal algebras in the semi-infinite Weil complex related to the loop algebra of a complex finite-dimensional Lie algebra and in the semi-infinite cohomology. We show that in the case where the Lie algebra is endowed with a non-degenerate invariant symmetric bilinear form, the relative semi-infinite cohomology of the loop algebra has a structure, which is analogous to the classical structure of the de Rham cohomology in Kähler geometry.
description: 23 pages, TeX. To be published in Annales de l'Institut Fourier
Grammatikalisierung von Tempus, Aspekt und Modalität im Bislama
Creators: name: Yakpo, Kofi
Publisher: name: Zenodo
Year: 1996
Subjects: Bislama
Creole
Pidgin
Vanuatu
South Pacific
Melanesia
Grammaticalization
Tense
Aspect
Modality
Substrate
English-lexifier creole

description: Das Bislama ist eine der weniger bekannten Pidgin und Kreolsprachen der Welt. In der vorliegenden Arbeit werde ich die überschneidenden Funktionen des Grammems 'bae' veranschaulichen und die möglichen diachronen Verbindungen zwischen Grammatikalisierungsprozessen in den Bereichen von Tempus, Aspekt und Modalität aufzuweisen versuchen. Dies geschieht mithilfe eines Korpus von in Vanuatu während einer viermonatigen Feldforschung gesammelten Primärdaten sowie unter Berücksichtigung historischer Quellen. Ich gehe ebenso auf formale Prozesse ein, die mit dem funktionalen Wandel des Grammems "bae" im Bislama in Zusammenhang stehen.
Metallicity of the Intergalactic Medium Using Pixel Statistics: I. Method
Creators: name: Aguirre, Anthony
name: Schaye, Joop
name: Theuns, Tom
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Studies of absorption spectra of high-z QSOs have revealed that the intergalactic medium at z ~ 2-3 is enriched to ~ 0.1%-1% solar for gas densities more than a few times the mean cosmic density, but have not yet produced an accurate metallicity estimate, nor constrained variations in the metallicity with density, redshift, or spatial location. This paper discusses the ``pixel optical depth'' (POD) method of QSO spectrum analysis, using realistic simulated spectra from cosmological simulations. In this method, absorption in Ly-alpha is compared to corresponding metal absorption on a pixel-by-pixel basis, yielding for each analyzed spectrum a single statistical correlation encoding metal enrichment information. Our simulations allow testing and optimization of each step of the technique's implementation. Tests show that previous studies have probably been limited by C IV self-contamination and O VI contamination by HI lines; we have developed and tested an effective method of correcting for both contaminants. We summarize these and other findings, and provide a useful recipe for the POD technique's application to observed spectra. Our tests reveal that the POD technique applied to spectra of presently available quality is effective in recovering useful metallicity information even in underdense gas. We present an extension of the POD technique to directly recover the intergalactic metallicity as a function of gas density. For a given ionizing background, both the oxygen and carbon abundance can be measured with errors of at most a factor of a few over at least an order of magnitude in density, using a single high-quality spectrum.
description: ApJ, in press; 27 pages, 14 postscript figures
Xe⋯OCS: Relatively straightforward?
Creators: name: Kraus, Peter
name: Obenchain, Daniel A.
name: Herbers, Sven
name: Wachsmuth, Dennis
name: Frank, Irmgard
name: Grabow, Jens-Uwe
Publisher: name: Cambridge : RSC Publ.
Year: 2020
Subjects: subject: Binding energy
subject: Microwave spectroscopy
subject: Basis sets
subject: Diffuse functions
subject: Highly accurate
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: We report a benchmark-quality equilibrium-like structure of the Xe⋯OCS complex, obtained from microwave spectroscopy. The experiments are supported by a wide array of highly accurate calculations, expanding the analysis to the complexes of He, Ne, Ar, Kr, Xe, and Hg with OCS. We investigate the trends in the structures and binding energies of the complexes. The assumption that the structure of the monomers does not change significantly upon forming a weakly bound complex is also tested. An attempt at reproducing the r(2)m structure of the Xe⋯OCS complex with correlated wavefunction theory is made, highlighting the importance of relativistic effects, large basis sets, and inclusion of diffuse functions in extrapolation recipes.
Sounds and hydrodynamics of polar active fluids
Creators: name: Geyer, Delphine
name: Morin, Alexandre
name: Bartolo, Denis
Publisher: name: arXiv
Year: 2018
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Spontaneously flowing liquids have been successfully engineered from a variety of biological and synthetic self-propelled units. Together with their orientational order, wave propagation in such active fluids have remained a subject of intense theoretical studies. However, the experimental observation of this phenomenon has remained elusive. Here, we establish and exploit the propagation of sound waves in colloidal active materials with broken rotational symmetry. We demonstrate that two mixed modes coupling density and velocity fluctuations propagate along all directions in colloidal-roller fluids. We then show how the six materials constants defining the linear hydrodynamics of these active liquids can be measured from their spontaneous fluctuation spectrum, while being out of reach of conventional rheological methods. This active-sound spectroscopy is not specific to synthetic active materials and could provide a quantitative hydrodynamic description of herds, flocks and swarms from inspection of their large-scale fluctuations
description: 3 figures
Transfer learning for time series classification
Creators: name: Fawaz, Hassan Ismail
name: Forestier, Germain
name: Weber, Jonathan
name: Idoumghar, Lhassane
name: Muller, Pierre-Alain
Publisher: name: arXiv
Year: 2018
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Transfer learning for deep neural networks is the process of first training a base network on a source dataset, and then transferring the learned features (the network's weights) to a second network to be trained on a target dataset. This idea has been shown to improve deep neural network's generalization capabilities in many computer vision tasks such as image recognition and object localization. Apart from these applications, deep Convolutional Neural Networks (CNNs) have also recently gained popularity in the Time Series Classification (TSC) community. However, unlike for image recognition problems, transfer learning techniques have not yet been investigated thoroughly for the TSC task. This is surprising as the accuracy of deep learning models for TSC could potentially be improved if the model is fine-tuned from a pre-trained neural network instead of training it from scratch. In this paper, we fill this gap by investigating how to transfer deep CNNs for the TSC task. To evaluate the potential of transfer learning, we performed extensive experiments using the UCR archive which is the largest publicly available TSC benchmark containing 85 datasets. For each dataset in the archive, we pre-trained a model and then fine-tuned it on the other datasets resulting in 7140 different deep neural networks. These experiments revealed that transfer learning can improve or degrade the model's predictions depending on the dataset used for transfer. Therefore, in an effort to predict the best source dataset for a given target dataset, we propose a new method relying on Dynamic Time Warping to measure inter-datasets similarities. We describe how our method can guide the transfer to choose the best source dataset leading to an improvement in accuracy on 71 out of 85 datasets.
description: Accepted at IEEE International Conference on Big Data 2018
Diagnosis, management and prognosis of familial hypercholesterolaemia in a UK tertiary cardiac centre
Creators: name: Barbir, Mahmoud
name: Breen, Jane
name: Neves, Emma
name: Priestley-Barnham, Lorraine
name: Lazem, Fawzi
name: Grocott-Mason, Richard
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Objective: To describe demographic characteristics, current local clinical management and outcomes for patients with familial hypercholesterolaemia (FH) managed at the Royal Brompton and Harefield NHS Foundation Trust (RBHT), a specialist UK tertiary cardiac centre. Research design and methods: A local service evaluation of patients with FH was conducted by RBHT. Patients were identified from local FH databases and medical records based on pre-defined eligibility criteria. Descriptive statistics were performed. Main outcome measures: Proportion of patients with cardiovascular (CV) events during the period of follow-up; per cent change in low-density lipoprotein cholesterol (LDL-C) between highest untreated and most recent measurement; description of patient characteristics and treatment pathways. Results: The final evaluation sample included 306 patients whose first contact with the RBHT FH service was between November 1991 and February 2015. Patients were followed up until 2016 (median 4.4 years, range 1.2–24.9). Forty-three per cent (131/306) of patients had genetically confirmed FH and 56% (172/306) did not but meet a modified Simon Broome criteria. One fifth (20%, 60/306) had at least one CV event prior to their first contact with the service, mainly angioplasty (15%, 45/306) and MI (10%, 32/306). Thirty-five patients (11%) had CV events during the period of follow-up, occurring at a mean of 5.2 years after first contact. Of 269 “current” patients (i.e. patients with at least one contact with the service in the previous 3 years) 90% (241/269) were prescribed statins, with adverse events experienced by 30% (73/241). Eleven patients received lipoprotein apheresis. Only 34% (49/143) of patients had a reduction of ≥50% between the highest untreated and most recent LDL-C measurement. Conclusions: Results highlight the challenges of diagnosing and management of this high risk patient group whilst reducing CV events. Future work should focus on characterisation of patient subgroups and optimising treatment with novel therapeutic agents.
A framework to measure the robustness of programs in the unpredictable environment
Creators: name: Castiglioni, Valentina
name: Loreti, Michele
name: Tini, Simone
Publisher: name: arXiv
Year: 2021
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: Due to the diffusion of IoT, modern software systems are often thought to control and coordinate smart devices in order to manage assets and resources, and to guarantee efficient behaviours. For this class of systems, which interact extensively with humans and with their environment, it is thus crucial to guarantee their correct behaviour in order to avoid unexpected and possibly dangerous situations. In this paper we will present a framework that allows us to measure the robustness of systems. This is the ability of a program to tolerate changes in the environmental conditions and preserving the original behaviour. In the proposed framework, the interaction of a program with its environment is represented as a sequence of random variables describing how both evolve in time. For this reason, the considered measures will be defined among probability distributions of observed data. The proposed framework will be then used to define the notions of adaptability and reliability. The former indicates the ability of a program to absorb perturbation on environmental conditions after a given amount of time. The latter expresses the ability of a program to maintain its intended behaviour (up-to some reasonable tolerance) despite the presence of perturbations in the environment. Moreover, an algorithm, based on statistical inference, is proposed to evaluate the proposed metric and the aforementioned properties. We use two case studies to the describe and evaluate the proposed approach.
Auto-tuning TensorFlow Threading Model for CPU Backend
Creators: name: Hasabnis, Niranjan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: TensorFlow is a popular deep learning framework used by data scientists to solve a wide-range of machine learning and deep learning problems such as image classification and speech recognition. It also operates at a large scale and in heterogeneous environments --- it allows users to train neural network models or deploy them for inference using GPUs, CPUs and deep learning specific custom-designed hardware such as TPUs. Even though TensorFlow supports a variety of optimized backends, realizing the best performance using a backend may require additional efforts. For instance, getting the best performance from a CPU backend requires careful tuning of its threading model. Unfortunately, the best tuning approach used today is manual, tedious, time-consuming, and, more importantly, may not guarantee the best performance. In this paper, we develop an automatic approach, called TensorTuner, to search for optimal parameter settings of TensorFlow's threading model for CPU backends. We evaluate TensorTuner on both Eigen and Intel's MKL CPU backends using a set of neural networks from TensorFlow's benchmarking suite. Our evaluation results demonstrate that the parameter settings found by TensorTuner produce 2% to 123% performance improvement for the Eigen CPU backend and 1.5% to 28% performance improvement for the MKL CPU backend over the performance obtained using their best-known parameter settings. This highlights the fact that the default parameter settings in Eigen CPU backend are not the ideal settings; and even for a carefully hand-tuned MKL backend, the settings may be sub-optimal. Our evaluations also revealed that TensorTuner is efficient at finding the optimal settings --- it is able to converge to the optimal settings quickly by pruning more than 90% of the parameter search space.
description: Paper presented at Machine Learning in HPC Environments workshop held along with SuperComputing 2018, Dallas, Texas
猪两个品种垂体组织增强子与启动子的比较分析
Creators: name: 斌 杨
Publisher: name: CNGB
Year: 2021
Subjects: Epigenomics
Multiisolate
Agricultural

description: 利用ChIP-Seq的技术对两个品种的猪（大白与巴马香）垂体组织的增强子与启动子进行解析
Simulating the impact of the Smith Cloud
Creators: name: Alig, C.
name: Hammer, S.
name: Borodatchenkova, N.
name: Dobbs, C. L.
name: Burkert, A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the future evolution of the Smith Cloud by performing hydrodynamical simulations of the cloud impact onto the gaseous Milky Way Galactic disk. We assume a local origin for the cloud and thus do not include a dark matter component to stabilize it. Our main focus is the cloud's influence on the local and global star formation rate (SFR) of the Galaxy and whether or not it leads to an observable event in the far future. Our model assumes two extremes for the mass of the Smith Cloud, an upper mass limit of 10$^7$ M$_{\odot}$ and a lower mass limit of 10$^6$ M$_{\odot}$, compared to the observational value of a few 10$^6$ M$_{\odot}$. In addition, we also make the conservative assumption that the entirety of the cloud mass of the extended Smith Cloud is concentrated within the tip of the cloud. We find that the impact of the low-mass cloud produces no noticeable change in neither the global SFR nor the local SFR at the cloud impact site within the galactic disk. For the high-mass cloud we find a short-term (roughly 5 Myr) increase of the global SFR of up to 1 M$_{\odot}$ yr$^{-1}$, which nearly doubles the normal Milky Way SFR. This highly localized starburst should be observable.
description: 14 pages, 5 figures
A new equation of state for dense hydrogen-helium mixtures
Creators: name: Chabrier, G.
name: Mazevet, S.
name: Soubiran, F.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a new equation of state (EOS) for dense hydrogen/helium mixtures which covers a range of densities from $10^{-8}$ to $10^6$ g.cm$^{-3}$, pressures from $10^{-9}$ to $10^{13}$ GPa and temperatures from $10^{2}$ to $10^{8}$ K. The calculations combine the EOS of Saumon, Chabrier & vanHorn (1995) in the low density, low temperature molecular/atomic domain, the EOS of Chabrier & Potekhin (1998) in the high-density, high-temperature fully ionized domain, the limits of which differ for H and He, and ab initio quantum molecular dynamics (QMD) calculations in the intermediate density and temperature regime, characteristic of pressure dissociation and ionization. The EOS for the H/He mixture is based on the so-called additive volume law and thus does not take into account the interactions between the two species. A major improvement of the present calculations over existing ones is that we calculate the entropy over the entire density-temperature domain, a necessary quantity for stellar or planetary evolution calculations. The EOS results are compared with existing experimental data, namely Hugoniot shock experiments for pure H and He, and with first principle numerical simulations for both the single elements and the mixture. This new EOS covers a wide range of physical and astrophysical conditions, from jovian planets to solar-type stars, and recovers the existing relativistic EOS at very high densities, in the domains of white dwarfs and neutron stars.
description: To appear in Astrophysical Journal. Figures in the published version will be larger
The Complexity of Iterated Reversible Computation
Creators: name: Eppstein, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Complexity (cs.CC)
subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: F.1.1
subject: 68Q10, 68Q15, 68Q80

description: We study a class of functional problems reducible to computing $f^{(n)}(x)$ for inputs $n$ and $x$, where $f$ is a polynomial-time bijection. As we prove, the definition is robust against variations in the type of reduction used in its definition, and in whether we require $f$ to have a polynomial-time inverse or to be computible by a reversible logic circuit. These problems are characterized by the complexity class $\mathsf{FP}^{\mathsf{PSPACE}}$, and include natural $\mathsf{FP}^{\mathsf{PSPACE}}$-complete problems in circuit complexity, cellular automata, graph algorithms, and the dynamical systems described by piecewise-linear transformations.
description: 35 pages, 8 figures
Simulation-based feed rate adaptation considering tool wear condition
Creators: name: Denkena, Berend
name: Dittrich, Marc-André
name: Mainka, Julia
Publisher: name: Amsterdam [u.a.] : Elsevier
Year: 2020
Subjects: subject: Machine learning
subject: Milling
subject: Simulation
subject: Wear
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: The process forces generated in machining are related to a deflection of the milling tool, which results in shape deviations. In addition to process parameters like feed rate, width and depth of cut or cutting speed, the wear condition of the tool has a significant influence on the shape deviation during flank milling. In process planning it is important to take the tool condition and the ideal time for tool change into account when selecting the process parameters. An assistance system is being researched at the Institute of Production Engineering and Machine T ools (IFW) in cooperation with Kennametal Shared Services GmbH to support this task. T he assistance system adjusts automatically the feed rate considering a predefined maximum shape deviation. Additionally, it identifies an optimal moment for tool change. T he advantages of the system are particularly evident in planning of individual milling processes. T he assistance system is based on a combination of a material removal simulation and empirical models of the shape error. For this purpose, spindle currents as well as measured shape errors are stored in a database. T hese data are extended by the actual local cutting conditions calculated by a process-parallel material removal simulation. Afterwards, the data is transferred into process knowledge via a Support Vector Machine (SVM). Within a technological NC simulation before the start of manufacturing, the generated knowledge is applied to predict the shape error of the workpiece and to automatically adjust the feed rate. By adapting the feed rate, it is possible to control the tool life. T he required tool change is defined by specifying a limit for the permitted width of flank wear land. T he presented assistance system enables the prediction of the shape error parallel to the manufacturing process and the automatic determination of the feed rate as well as the ideal time for tool change.
Hemimyzon Regan 1911
Creators: name: Chen, I-Shiung
name: Harefa, Tonisman
name: Chang, Yung-Ching
name: Han, Chiao-Chuan
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Cypriniformes
Balitoridae
Hemimyzon

description: Hemimyzon Regan, 1911
 (Type species, Homaloptera formosana Boulenger, 1894)
description: Published as part of Chen, I-Shiung, Harefa, Tonisman, Chang, Yung-Ching & Han, Chiao-Chuan, 2022, Hemimyzon yushanensis, a new species of balitorid fish (Teleostei: Baltiordae) from southern Taiwan, pp. 6-12 in Zootaxa 5189 (1) on page 7, DOI: 10.11646/zootaxa.5189.1.3, http://zenodo.org/record/7119624
Tests of hadronic interactions with measurements by Pierre Auger Observatory
Creators: name: Prado, R. R.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The hybrid design of the Pierre Auger Observatory allows for the measurement of a number of properties of extensive air showers initiated by ultra-high energy cosmic rays. By comparing these measurements to predictions from air shower simulations, it is possible to both infer the cosmic ray's mass composition and test hadronic interactions beyond the energies reached by accelerators. In this paper, we will present a compilation of results of air shower measurements by Pierre Auger Observatory which are sensitive to the properties of hadronic interactions and can be used to constrain the hadronic interaction models. The inconsistencies found between the interpretation of different observables with regard to primary composition and between their measurements and simulations show that none of the currently used hadronic interaction models can provide a proper description of air showers and, in particular, of the muon production.
description: 6 pages, 5 figures. To appear in the proceedings of the 20th International Symposium on Very High Energy Cosmic Ray Interactions (ISVHECRI 2018), Nagoya, Japan
The Unusual Superconducting State of Underdoped Cuprates
Creators: name: Lee, Patrick A.
name: Wen, Xiao-Gang
Publisher: name: arXiv
Year: 1997
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: There is increasing experimental evidence that the superconducting energy gap $Δ_0$ in the underdoped cuprates is independent of doping concentration $x$ while the superfluid density is linear in $x$. We show that under these conditions, thermal excitation of the quasiparticles is very effective in destroying the superconducting state, so that $T_c$ is proportional to $xΔ_0$ and part of the gap structure remains in the normal state. We then estimate $H_{c2}$ and predict it to be proportional to $x^2$. We also discuss to what extent the assumptions that go into the quasiparticle description can be derived in the U(1) and SU(2) formulations of the t-J model.
description: 4 pages RevTeX
title: Deutsche Apotheker-Zeitung 54. Jg. 1939 - Werbung und Kleinanzeigen (Juli - Dezember)
Creators: name: :None
Publisher: name: Deutscher Apotheker-Verlag
Year: 1939
Subjects: subject: 615

description: Apotheker-Zeitung: Organ des Deutschen Apothekervereins - Standeszeitung deutscher Apotheker, vol. 54,1939
RELATION OF VITAMIN D AND INSULIN RESISTANCE IN TYPE 2 DIABETES MELLITUS
Creators: name: Naseem Khan
name: S.B. Sharma
name: Nirupma Gupta
name: Dr. Manoj Kumar Nandkeoliar
Publisher: name: Zenodo
Year: 2024
Subjects: Diabetes Mellitus (DM), Type 2 Diabetes Mellitus (T2DM), Insulin Resistance.

description: Abstract

Background: It is worth noting that vitamin D deficiency is very common and may be associated with the pathogenesis of insulin-resistance-related diseases, including obesity and diabetes. Insulin resistance (IR) is the primary pathogenic factor, contributing to impaired glucose tolerance and diabetes complications. Vitamin D deficiency, linked to increase IR and metabolic syndrome, is prevalent in T2DM patients. Vitamin D (VD) may influence insulin sensitivity or pancreatic β-cell activity, thereby contributing to the development of Type 2 Diabetes Mellitus (T2DM). This review aims to provide molecular mechanisms showing how vitamin D deficiency may be involved in the insulin resistance formation. More recently, it was also shown that vitamin D prevents epigenetic alterations associated with insulin resistance and diabetes. The impact of vitamin D deficiency on the incidence of various diseases and its relationship with the progression of type 2 diabetes mellitus (T2DM) is still controversial. Conclusion: Although the relationship between vitamin D and insulin resistance in T2DM seems promising, more research is required to fully comprehend the underlying mechanisms and create therapeutic care guidelines that are supported by data. The potential for vitamin D to increase insulin sensitivity and diabetes management is great, but it must be treated cautiously and supported by more scientific evidence.
A point mass in an isotropic universe. Existence, uniqueness and basic properties
Creators: name: Nolan, Brien C.
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Criteria which a space-time must satisfy to represent a point mass embedded in an open Robertson--Walker (RW) universe are given. It is shown that McVittie's solution in the case $k=0$ satisfies these criteria, but does not in the case $k=-1$. Existence of a solution for the case $k=-1$ is proven and its representation in terms of an elliptic integral is given. The following properties of this and McVittie's $k=0$ solution are studied; uniqueness, behaviour at future null infinity, recovery of the RW and Schwarzschild limits, compliance with energy conditions and the occurence of singularities. Existence of solutions representing more general spherical objects embedded in a RW universe is also proven.
description: 20 pages, to appear in Phys. Rev. D
title: Deutsche Apotheker-Zeitung vereinigt mit Süddeutsche Apotheker-Zeitung - Werbung und Kleinanzeigen
Creators: name: :None
Publisher: name: Roland Schmiedel
Year: 1950
Subjects: subject: 615

description: Die Zeitschrift erschien von Nr. 1 bis Nr. 42 ( Seite 1 bis 836) unter dem Titel 'Süddeutsche Apotheker-Zeitung', von Nr. 43 bis Nr. 52 (Seite 837 bis 1032) unter dem Titel 'Deutsche Apotheker-Zeitung vereinigt mit Süddeutsche Apotheker-Zeitung'
description: Süddeutsche Apotheker-Zeitung: Zeitschrift für Apotheker und Vertreter verwandter Berufszweige, vol. 90, 1950
Galaxy And Mass Assembly (GAMA): Environmental Quenching of Centrals and Satellites in Groups
Creators: name: Davies, L. J. M.
name: Robotham, A. S. G.
name: Lagos, C. del P.
name: Driver, S. P.
name: Stevens, A. R. H.
name: Bahé, Y. M.
name: Alpaslan, M.
name: Bremer, M. N.
name: Brown, M. J. I.
name: Brough, S.
name: Bland-Hawthorn, J.
name: Cortese, L.
name: Elahi, P.
name: Grootes, M. W.
name: Holwerda, B. W.
name: Ludlow, A. D.
name: McGee, S.
name: Owers, M.
name: Phillipps, S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recently a number of studies have found a similarity between the passive fraction of central and satellite galaxies when controlled for both stellar and halo mass. These results suggest that the quenching processes that affect galaxies are largely agnostic to central/satellite status, which contradicts the traditional picture of increased satellite quenching via environmental processes such as stripping, strangulation and starvation. Here we explore this further using the Galaxy And Mass Assembly (GAMA) survey which extends to ~2dex lower in stellar mass than SDSS, is more complete for closely-separated galaxies (>95% compared to >70%), and identifies lower-halo-mass groups outside of the very local Universe (M$_{\mathrm{halo}}\sim10^{12}$M$_{\odot}$ at $0.1
description: 15 pages, 8 figures, MNRAS accepted
Acanthopsyche mixta Bourgogne 1962
Creators: name: Mbata, Keith J.
name: Prins, Jurate De
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Psychidae
Acanthopsyche
Acanthopsyche mixta

description: Acanthopsyche mixta Bourgogne, 1962
COMMON NAME(S): Bagworm moth, Bagworm or Bagmoth.
SYNONYM(S): None.
IUCN STATUS: Not Evaluated (NE).
DISTRIBUTION: Angola, Democratic Republic of Congo, Nigeria, Zambia.
LOCALITY IN ZAMBIA: Type Locality is Kimbwi in Solwezi, in Northwestern Province.
LARVAL HOSTPLANT(S): Unknown.
SOURCES: Bourgogne 1962; De Prins & De Prins 2022.
Genus Afropsyche Dierl, 1972
description: Published as part of Mbata, Keith J. & Prins, Jurate De, 2023, Annotated checklist of moths of Zambia (Insecta: Lepidoptera), pp. 1-503 in Zootaxa 5354 (1) on pages 20-21, DOI: 10.11646/zootaxa.5354.1.1, http://zenodo.org/record/10130434