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Conditional Generative Adversarial Networks for modelling fuel sprays

Energy and AI 2023年第2期12卷 62-75页

作者： Cihan Ates Farhad Karwan Max Okraschevski rainer Koch Hans-Jörg Bauer Karlsruhe Institute of Technology(KIT) Institute of Thermal TurbomachineryGermany Karlsruhe Institute of Technology(KIT) Machine Intelligence in Energy SystemsGermany

In this study, the probabilistic, data driven nature of the generative adversarial neural networks (GANs)was utilized to conduct virtual spray simulations for conditions relevant to aero engine combustors. Themodel consists of two sub-modules: (i) an autoencoder converting the variable length droplet trajectories intofixed length, lower dimensional representations and (ii) a Wasserstein GAN that learns to mimic the latentrepresentations of the evaporating droplets along their lifetime. The GAN module was also conditioned withthe injection location and the diameters of the droplets to increase the generalizability of the whole *** training data was provided from highly resolved 3D, transient Eulerian–Lagrangian, large eddy simulationsconducted with OpenFOAM. Neural network models were created and trained within the open source machinelearning framework of PyTorch. Predictive capabilities of the proposed method was discussed with respect tospray statistics and evaporation dynamics. Results show that conditioned GAN models offer a great potentialas low order model approximations with high computational efficiency. Nonetheless, the capabilities of theautoencoder module to preserve local dependencies should be improved to realize this potential. For the currentcase study, the custom model architecture was capable of conducting the simulation in the order of secondsafter a day of training, which had taken one week on HPC with the conventional CFD approach for the samenumber of droplets (200,000 trajectories).

关键词： Generative Adversarial Networks Generative learning Fuel injection Aero engines Multivariate time series

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On the compensator of the default process in an information-based model

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Probability, Uncertainty and Quantitative Risk 2017年第1期2卷 230-250页

作者： Matteo Ludovico Bedini rainer Buckdahn Hans-Jurgen Engelbert Numerix MilanoItaly Universite de Bretagne Occidentale BrestFrance´School of MathematicsShandong UniversityJinanShandong ProvincePeople’s Republic of China Friedrich-Schiller-Universitat Fakult¨at f¨ur Mathematik und InformatikInstitut f¨ur StochastikJena¨Germany

This paper provides sufficient conditions for the time of bankruptcy(of a company or a state)for being a totally inaccessible stopping time and provides the explicit computation of its compensator in a framework where the flow of market information on the default is modelled explicitly with a Brownian bridge between 0 and 0 on a random time interval.

关键词： Default time Totally inaccessible stopping time Brownian bridge on random intervals Local time Credit risk Compensator process

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THE PRESS HERE ARE VERY POLITE...FORMER ENGLAND MANAGER SVEN GORAN ERIKSSON ON THE JOYS OF LIFE IN CHINA

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城市漫步（上海版、英文） 2014年第1期 16-17页

作者： MATT horn 不详

As a former boss of Manchester City during the club’s dark old days of mid table mediocrity,Sven Goran Eriksson is well versed in the complex role of managing a club in the shadow of a more illustrious neighbor.

关键词： managing shadow Manchester

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Cellular heterogeneity in pancreatic cancer: the different faces of gremlin action

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Signal Transduction and Targeted Therapy 2022年第11期7卷 3992-3994页

作者： Aristidis Moustakas J.Matthias Löhr rainer L.Heuchel Department of Medical Biochemistry and Microbiology Uppsala UniversityUppsalaSweden Department of Clinical Intervention and Technology(CLINTEC) Karolinska InstitutetStockholmSweden

A recent publication in Nature by Lan et al.,presented GREM1(gremlin 1)as an important regulatory node of cellular plasticity in pancreatic ductal adenocarcinoma(PDAC).1 Knockout experiments in mice point to an important role of Grem1 in retaining an epithelial,differentiated phenotype of pancreatic cancer cells presumably by inhibiting BMP signalling.

关键词： al. cancer inhibiting

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SWEDE SMELL OF SUCCESS SVEN GORAN ERIKSSON ON MANAGING GUANGZHOU'S‘SECOND TEAM’

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城市漫步（GBA版） 2014年第1期 14-15页

作者： MATT horn 不详

In November,we in terviewed lege ndary Italian football coach Marcello Lippi ahead of Guan gzhou Evergrande's triumph in the AFC Champions *** Lippi is not the only star name in a Guangzhou hot seat as players return to pre-season training this *** the new campaign fast approaching,we caught up with former England boss Sven Goran Eriksson as he aims to make Guangzhou R&F serious challengers to their city rivals。

关键词： Italian return approaching

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UNDERDOGS WITH A BITE Hopeful Fans Gear Up For Euro 2016

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城市漫步（GBA版） 2016年第6期 46-47页

作者： MAH horn 不详

The 5000-1 success of English Premier League champions Leicester City last month made headlines around the *** message was:if Leicester can,anyone *** there is an added sense of excitement among football fans in the PRD this June as we prepare for the late nights and early mornings spent following the action from France in the Euro 2016 Championship.

关键词： football Premier League

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TPC1 - SV Channels Gain Shape

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Molecular Plant 2011年第3期4卷 428-441页

作者： rainer Hedrich Irene Marten University Wuerzburg Institute for Molecular Plant Physiology and Biophysics Julius-von-Sachs Platz 2 D-97082 Wuerzburg Germany King Saud University Zoology Department College of Science RO. Box 2455 Riyadh 11451 Saudi Arabia

The most prominent ion channel localized in plant vacuoles is the slow activating SV type. Slow vacuolar （SV） channels were discovered by patch clamp studies as early as 1986. In the following two decades, numerous studies revealed that these calcium- and voltage-activated, nonselective cation channels are expressed in the vacuoles of all plants and every plant tissue. The voltage-dependent properties of the SV channel are susceptible to modulation by calcium, pH, redox state, as well as regulatory proteins. In Arabidopsis, the SV channel is encoded by the AtTPC1 gene, and even though its gene product represents the by far largest conductance of the vacuolar membrane, tpcl-loss-of-function mutants appeared not to be impaired in major physiological functions such as growth, development, and reproduction. In contrast, the fou2 gain-of-function point mutation D454N within TPC1 leads to a pronounced growth phenotype and increased synthesis of the stress hormone jasmonate. Since the TPC1 gene is present in all land plants, it likely encodes a very general function. In this review, we will discuss major SV channel properties and their impact on plant cell physiology.

关键词： SV channel TPC1 vacuole transport CICR.

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Probability to retrieve testicular spermatozoa in azoospermic patients

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Asian Journal of Andrology 2000年第3期2卷 199-205页

作者： H.-J.Glanden L.-C.horn W.Dorschner U.Paasch J.Kratzsch Department of Dermatology/Andrology Unit Department of Dermatology Department of PathologyDepartment of Dermatology Department of UrologyDepartment of Dermatology/Andrology UnitDepartment of Clinical Chemistry and Pathological Biochemistry University of Leipzig D-04103 Leipzig Germany

Aim: The degree of probability to retrieve spermatozoa from testicular tissue for intracytoplasmic sperm injection intooocytes is of interest for counselling of infertility patients. We investigated the relation of sperm retrieval to clinical dataand histological pattern in testicular biopsies from azoospermic patients. Methods: In 264 testicular biopsies from142 azoospermic patients, the testicular tissue was shredded to separate the spermatozoa, histological semi-thin sec-tions of which were then evaluated using Johnsen score. Results: The retrieval of spermatozoa correlated signifi-cantly (P 18 U/L, tesficular volume < 5mL, mean Johnsen score< 5, and maximum Johnsen score < 7.

关键词： sperm extraction testicular histology azoospermia male infertility follicle stimulating hormone

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基于光控压电混合驱动悬臂梁独立模态控制

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振动与冲击 2015年第7期34卷 64-70页

作者：姜晶邓宗全岳洪浩王雷 TZOU horn-sen 哈尔滨工业大学机电工程学院哈尔滨150001 浙江大学航空航天学院杭州310027

提出利用镧改性锆钛酸铅(PLZT)的光电效应,将PLZT作为电动势源来驱动压电作动器,从而实现光控板壳结构的振动控制。基于光控压电等效电学模型建立了光控压电混合驱动的数学模型,并进行了实验验证。为了实现光控悬臂梁的独立模态控制,针... 详细信息

提出利用镧改性锆钛酸铅(PLZT)的光电效应,将PLZT作为电动势源来驱动压电作动器,从而实现光控板壳结构的振动控制。基于光控压电等效电学模型建立了光控压电混合驱动的数学模型,并进行了实验验证。为了实现光控悬臂梁的独立模态控制,针对悬臂梁结构,设计了正交模态传感器/作动器表面电极形状函数。提出PLZT与压电作动器正/反接控制的激励策略,并结合速度反馈定光强控制的控制算法,利用Newmark-β法对不同光照强度下悬臂梁的动态响应进行了数值仿真分析。分析结果证明了所设计的模态传感器/作动器及针对光控压电混合驱动提出的控制策略的正确性。

关键词：光控压电混合驱动悬臂梁独立模态控制

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Einstein’s Elevator in Cosmology

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Journal of Modern Physics 2016年第16期7卷 2347-2356页

作者： rainer Burghardt Obritz Austria

The metrics of gravitational and cosmological models are brought into canonical form in comoving coordinates. The FWR curvature parameter k is read from this and it is shown that k=0 does not correlate to a flat model, but for a spatially positively curved geometry in which reference systems which are in free fall exist. This also corresponds to Einstein’s elevator principle. Moreover, we will show that our subluminal cosmos is associated with the Rh=ct model of Melia, assuming that k=0 is related to a free-falling system in the sense described above.

关键词： Cosmology Einstein’s Elevator Canonical Form of the Metric

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