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Conditional Generative Adversarial Networks for modelling fuel sprays

能源与人工智能(英文) 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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Baroque

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作者： Hermann bauer Andreas Prater.

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Preface for special section on long-term behavior of dams

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水科学与水工程：英文版 2016年第3期9卷 173-174页

作者： Si-hong Liu Erich bauer College of Water Conservancy and Hydropower Engineering Hohai University Institute of Applied Mechanics Graz University of Technology

When it comes to the long-term operation of hydropowerplants, the service life of mechanical and electrical equipmentand the reliability of hydraulic engineering structures areboth crucial. The loading history and interaction of theconstruction with ground settlements, earthquake activities andflooding, chemical reactions with water, overtopping, and thestate of weathering and aging of the construction material mayplay an important role in the safe operation of hydraulicstructures such as earth, rockfill, and concrete dams, as wellas novel reinforced soil structures. A critical reduction ofthe safety of dams can be caused by the evolution of internalerosion, cracks in the sealing, earthquake-induced deformations,reduction of the slope stability of earth and rockfilldams triggered by heavy rainwater infiltration, or rapid reductionof the water level in the reservoir.

关键词： hydropowerplants equipmentand

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An Algorithm for the Design of a Cost-Optimized Topology for the Fixed Part of a GSM Network

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The Journal of China Universities of Posts and Telecommunications 2002年第3期9卷 38-42页

作者： CLAUS bauer (Tellabs Research Center) Tellabs Research Center

This paper proposes an algorithm to design a cost optimized topology for thefixed part of a mobile network. For the given locations of base stations and mobile switchingcenters, the algorithm decides the number and position of the base station controllers as well asthe way the base stations are connected to the base stations controllers.

关键词： algorithms communication system planning land mobile radio cellular systems

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A predictive accident-duration based decision-making module for rerouting in environments with V2V communication

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Journal of Traffic and Transportation Engineering(English Edition) 2017年第6期4卷 535-544页

作者： besat zardosht steven s.beauchemin michael a.bauer department of computer science western universityLondonOntario N6A 3K7Canada

Communication for cooperative traffic management increases convenience and efficiency in driving. Intelligent vehicles can collect information about the driving environment, the driver situation and, more importantly, information on other vehicles. While giving this information to the driver can be useful, there is also the possibility of presenting the driver with too much information. Existing vehicles already have some mechanisms to take certain actions if the driver fails to act. Future vehicles will need more complex decision-making modules which receive the raw data from all available sources, process this data and inform the driver about existing or impending situations and suggest, or even take actions. In this work, we explore the use of a decision-making module for accident situations that processes information from VANET communication and advises the driver based on the situation. Our decision-making algorithm is a simple and effective algorithm that can be implemented in each vehicle to assist the driver in situations where rerouting to avoid traffic congestion caused by an accident may be necessary. Our approach estimates accident duration and provides a rerouting for upcoming traffic. Our algorithm has been implemented and evalu- ated within an elegant traffic simulation system where both city and highway environments are considered, along with various proportions of V2V-equipped vehicles. Overall, the results indicate that using our decision-making module in vehicles shows great potential for improving performance of vehicular systems by reducing both travel and wait times and providing more accurate information on surrounding environments.

关键词： Cooperative traffic managementsystemVANETDecision-making systemAccident duration model

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Complementary and Alternative Medicine Therapies for Chronic Pain

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Chinese Journal of Integrative Medicine 2016年第6期22卷 403-411页

作者： Brent A.bauer Jon C.Tilburt Amit Sood 李光熙王师菡 Division of Complementary and Integrative Medicine Mayo Clinic Division of Pulmonary and Critical Care Medicine Mayo Clinic Guang'anmen Hospital China Academy of Chinese Medical Sciences Division of Cardiovascular Diseases Mayo Clinic

ABSTRACT Pain afflicts over 50 million people in the US, with 30.7% US adults suffering with chronic pain. Despite advances in therapies, many patients will continue to deal with ongoing symptoms that are not fully addressed by the best conventional medicine has to offer them. The patients frequently turn to therapies outside the usual purview of conventional medicine （herbs, acupuncture, meditation, etc.） called complementary and alternative medicine （CAM）. Academic and governmental groups are also starting to incorporate CAM recommendations into chronic pain management strategies. Thus, for any physician who care for patients with chronic pain, having some familiarity with these therapies--including risks and benefits--will be key to helping guide patients in making evidence-based, well informed decisions about whether or not to use such therapies. On the other hand, if a CAM therapy has evidence of both safety and efficacy then not making it available to a patient who is suffering does not meet the need of the patient. We summarize the current evidence of a wide variety of CAM modalities that have potential for helping patients with chronic pain in this article. The triad of chronic pain symptoms, ready access to information on the internet, and growing patient empowerment suggest that CAM therapies will remain a consistent part of the healthcare of patients dealing with chronic pain.

关键词： complementary and alternative medicine therapy chronic pain safety and efficacy

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在美国使用无纺布菌条防治光肩星天牛的前景(英文)

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安徽农业大学学报 2007年第2期34卷 149-156页

作者：安.哈耶克 thomas Dubois Jennifer Lund Michael Smith Leah bauer Department of Entomology Cornell UniversityIthacaNY 14853-2601 USA USDA Agricultural Research ServiceBIIRLNewarkDE USA USDA Forest Service407 So.Harrison St.East LansingMI 48823 USA

An invasive long-horned beetle,Anoplophora glabripennis,was first reported in the northeastern and midwestern United States and eastern Canada between 1996 and 2004 and has been given the common name Asian longhorned beetle(ALB).This beetle has also been found in several countries in *** is difficult to control because larvae are found within the wood of living trees and the long-lived adults often occur high in tree *** species is native to China and Korea and,because it has been a major tree killer in China,government agencies in the *** Canada are working to eradicate ALB from North *** laboratory has been developing a microbial control approach targeting ALB adults,based on the Japanese product Biolisa Kamikiri which is used to control cerambycids in *** fungi are grown within non-woven fiber bands(= fungal bands)and placed around tree trunks and branches where ALB adults become inoculated when walking across *** have conducted bioassays with Beauveria brongniartii,Beauveria bassiana and Metarhizium anisopliae against ALB larvae and adults to identify effective isolates and now focus our efforts on *** F52(ARSEF 7711).Caged field trials conducted in China to compare fungal sprays with fungal bands(2000,2001)demonstrated decreased ALB longevity and fitness for both application methods but longer activity of fungi in cages treated with fungal bands compared with *** field trials(2001,2002)yielded faster ALB adult mortality in fungal-treated plots and decreased *** in New York City testing the longevity of activity of fungal bands in the field have documented that bands retain>1×107 conidia·cm-2(the threshold for activity of Biolisa Kamikiri)for over 3 *** contrast,studies with unformulated conidia sprayed onto tree trunks in New York documented conidial survival of only a few *** effects of exposure of adult female ALB to fungal bands have been investigated fur

关键词：美国无纺布菌条光肩星天牛防治措施

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Incorporation of integrative medicine education into undergraduate medical education:a longitudinal study

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Journal of Integrative Medicine 2017年第6期15卷 442-449页

作者： saswati mahapatra anjali bhagra bisrat fekadu zhuo li brent a.bauer dietlind l.wahner-roedler division of general internal medicine mayo clinicRochesterMinnesota 55905USA mayo clinic school of medicine mayo clinic college of medicine and scienceRochesterMinnesota 55905USA biostatistics unit mayo clinicJacksonvilleFlorida 32224USA

OBJECTIVE： Integrative medicine （IM） combines complementary medical approaches into conventional medicine and considers the whole person. We implemented a longitudinal IM short-course curriculum into our medical school education. This study aimed to evaluate the feasibility and effectiveness of the curriculum via knowledge and attitude surveys regarding IM among students. METHODS： A mandatory short IM curriculum across all years of medical school was created and taught by IM professionals and physician faculty members with expertise in integrative therapies. Graduating classes of 2015 and 2016 completed the same survey in their first and third years of medical school. Paired data analysis was done, and only students who completed surveys at both time points were included in final analyses. RESULTS： Of 52 students in each class, 17 （33%） in the class of 2015 and 22 （42%） in the class of 2016 completed both surveys. After the IM curriculum, students＇ knowledge of and comfort with several IM therapies--biofeedback, mindfulness, and the use of St. John＇s wort--improved significantly. Students＇ personal health practices also improved, including better sleep, exercise, and stress management for the class of 2015. Students graduating in 2016 reported decreased alcohol use in their third year compared with their first year. CONCLUSION： It is feasible to incorporate IM education into undergraduate medical education, and this is associated with improvement in students＇ knowledge of IM and personal health practices.

关键词： course curriculum education integrative medicine medical students

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HEAVY-QUARK AND SOFT-COLLINEAR EFFECTIVE THEORY

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Chinese Physics C 2016年第10期40卷 303-309页

作者： C.W. bauer M. Neubert LBNL U. Mainz

17.1. Effective Field Theories Quantum field theories provide the most precise computational tools for describing physics at the highest energies. One of their characteristic features is that they almost inevitably involve multiple length scales. When trying to determine the value of an observable, quantum field theory demands that all possible virtual states and hence all particles be included in the calculation. Since these particles have widely different masses, the final prediction is sensitive to many scales. This fact represents a formidable challenge from a practical point of view. No realistic quantum field theories can be solved exactly, so that one needs to resort to approximation schemes; these, however, are typically most straightforward when only a single scale is involved at a time.

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Crystal structures and constitution of the binary system iridium-boron

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Science China Materials 2015年第8期58卷 649-668,594页

作者： Isolde Zeiringer 程曦月陈星秋 Ernest bauer Gerald Giester Peter Franz Rogl Institute of Materials Chemistry and Research University of Vienna Shenyang National Laboratory for Materials Science (SYNL) Institute of Metal Research (IMR) Chinese Academy of Sciences (CAS) Institute of Solid State Physics Vienna University of Technology Institute of Mineralogy and Crystallography University of Vienna

The constitution of the binary system Ir-B has been established between 10 and 70 at.% boron for temperatures above 700°C based on differential scanning calorimetry, electron probe microanalysis, and isothermal low temperature annealing experiments(≤1000°C). Four binary phases have been found, namely Ir4B5+x, Ir5B4+x and the high and low temperature modification of Ir4B3-x. X-ray structure analyses were performed on single crystals of Ir4B5+x(x = 0, Ir4B5 type; space group C2/m; a = 1.05200(2), b = 0.289564(6) and c = 0.60958(1) nm, β = 91.156(2)°), Ir5B4+x(x=0, Ir5B4 type; space group I41/a; a = 0.62777(1) and b = 1.02599(2) nm) and on the low temperature modification of Ir4B3-x(x=0, Ir B0.9 type; space group Cmc21; a = 0.27728(1), b = 0.75742(2) and c = 0.73152(2) nm). The high temperature modification of Ir4B3-x(WC type; space group P6-m2; a = 0.28137(5) and c = 0.2828(1) nm) has been confirmed by X-ray powder diffraction. By means of the first-principle calculations, in combination with the evolutionary structural search algorithm, the compositions, structures and enthalpies of the Ir-B system have been investigated theoretically. Confirming the experimental observations on Ir4B5, Ir5B4 and Ir4B3, we have investigated several metastable phases at other stoichiometries, such as Ir B, Ir B2 and Ir3B2. We also proposed three thermodynamically and dynamically stable new structures of o F28-Ir4B3, o C8-Ir B and m C10-Ir3B2, which may be synthesized under certain conditions.

关键词：晶格常数点阵参数 XPD nm

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