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Learning from the crowd:Road infrastructure monitoring system

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Journal of Traffic and Transportation Engineering(English Edition) 2017年第5期4卷 451-463页

作者： Johannes Masino Jakob thumm Michael Frey Frank gauterin Institute of Vehicle System Technology Karlsruhe Institute of Technology(KIT)Karlsruhe 76131Germany

The condition of the road infrastructure has severe impacts on the road safety, driving comfort, and on the rolling resistance. Therefore, the road infrastructure must be moni- tored comprehensively and in regular intervals to identify damaged road segments and road hazards. Methods have been developed to comprehensively and automatically digitize the road infrastructure and estimate the road quality, which are based on vehicle sensors and a supervised machine learning classification. Since different types of vehicles have various suspension systems with different response functions, one classifier cannot be taken over to other vehicles. Usually, a high amount of time is needed to acquire training data for each individual vehicle and classifier. To address this problem, the methods to collect training data automatically for new vehicles based on the comparison of trajectories of untrained and trained vehicles have been developed. The results show that the method based on a k-dimensional tree and Euclidean distance performs best and is robust in transferring the information of the road surface from one vehicle to another. Furthermore, this method offers the possibility to merge the output and road infrastructure information from multiple vehicles to enable a more robust and precise prediction of the ground truth.

关键词： Road infrastructure condition Monitoring Tree graphs Euclidean distance Machine learning Classification

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ISM频率中等功率回旋管的选模问题

红外与毫米波学报 2002年第4期21卷 289-292页

作者：刘濮鲲 E.Borie M.thumm 中国科学院电子学研究所北京100080 德国卡尔斯鲁厄研究中心脉冲功率与微波技术研究所卡尔斯鲁厄d76021

详细讨论工作在二次谐波的ISM频率中等功率回旋管的模式选择问题 .通过对注波耦合、模式竞争、电压下降与限制电流、欧姆损耗等的分析与计算 ,并考虑到结构的紧凑性 ,得出结论 :ISM频率工业与技术应用回旋管采用TE3

关键词： ISM频率中等功率回旋管选模

On the Elementary Mechanical Effects of the Space-Time-Symmetry Relativity

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Natural Science 2020年第9期12卷 661-665页

作者： Mikhail Petelin Manfred thumm Institute of Applied Physics Russian Academy of Sciences Nizhny Novgorod Russia Institute for Pulsed Power and Microwave Technology Karlsruhe Institute of Technology Karlsruhe Germany

This paper is an addendum to the article “On the Evolution of Approaches to the Space- Time Symmetry”, Natural Science, Vol. 10, No. 3, pp. 81-84, 2018. The analysis is based on the galileo’s postulate that all ine... 详细信息

This paper is an addendum to the article “On the Evolution of Approaches to the Space- Time Symmetry”, Natural Science, Vol. 10, No. 3, pp. 81-84, 2018. The analysis is based on the Galileo’s postulate that all inertial reference frames are equal. The postulate results immediately in the absolute speed limit, which is identical for all bodies in all reference frames. Two kinds of elementary particles are admitted: unhurried and restless ones (ex-emplified, accordingly, with electrons and photons). Any particle may be treated as wave packet, the particle mass and momentum depending on the reference frame. Thus, space-time-sym- metry is the natural background for the relativistic and quantum theo-ries.

关键词： Absolute Speed Limit Restless and Unhurried Elementary Particles Particle Wave Packets Mass-Momentum Relation

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弯曲波纹圆波导中模式耦合系数的研究

红外与毫米波学报 1992年第6期11卷 486-491页

作者：李宏福 Manfred thumm 电子科技大学高能电子学研究所四川成都610054 Institut

分析了波纹圆波导中由曲率所引起的模式耦合问题.从环形坐标系统中麦克斯韦方程出发导出了耦合系数的积分公式,并进一步推导了各模式间耦合系数的显式.

关键词：传输线波导模式耦合皱纹波导

On the Evolution of Approaches to the Space-Time Symmetry

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Natural Science 2018年第3期10卷 81-84页

The general space-time composition was analyzed starting in ancient times. During the previous three millenniums, to explain elementary physical phenomena, the world was twice admitted to be immersed into an “aether”. Presently the “aether” is assumed to be asymptotically close to the vacuum. This approximation is included in the foundation of the special theory of relativity.

关键词： Space-Time Symmetry Ecclesiastes Aristotle Proclus galileo Michelson Voigt “Aether” Lorentz Transformation Theory of Relativity

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板材的妙用

现代制造 2005年第7期 48-50页

作者： Claus thumm

用板材制造的插接式组合夹具系统带有纵向和横向的沟槽,上面的沟槽可安装其他板材或者其他垂直的定位零件。这使得组建一个大型的组合夹具变得十分方便。

关键词：插接式组合夹具系统板材插接技术模块式结构

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应用先进技术降低生产成本

铸造设备与技术 2006年第1期 44-47页

作者： Dieter thumm Business Director Process Lubricants Europe Acheson Industries Dornstadt Germany

选择合适的喷涂设备和脱模剂对生产成本有非常大的影响。喷涂装置的设计及其喷涂能力以及脱模剂的选择会很大程度地影响许多参数，比如生产周期、工厂设备整体利用率、零件质量、废品量、产生的废水量、废水的处理费用等。本文将阐述喷... 详细信息

选择合适的喷涂设备和脱模剂对生产成本有非常大的影响。喷涂装置的设计及其喷涂能力以及脱模剂的选择会很大程度地影响许多参数，比如生产周期、工厂设备整体利用率、零件质量、废品量、产生的废水量、废水的处理费用等。本文将阐述喷涂设备和脱模剂选取标准，在选取喷涂设备和脱模剂后，工艺的优化是另一个重要的步骤。文中通过举例来说明如何缩短生产周期，提高质量，从而达到降低生产成本的目的。

关键词：生产成本喷涂设备技术应用生产周期脱模剂喷涂装置工厂设备零件质量处理费用

2.2 MW, 165 gHz Coaxial Cavity gyrotron

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2.2 MW, 165 GHz Coaxial Cavity Gyrotron

2000 25～(th) International Conference on Infrared and Millimeter Waves Conference Digest

作者： B.Piosczyk A.Arnold g.Dammertz O.Dumbrajs M.Kuntze W.Leonhardt A.B.Pavelyev M.Schmid M.thumm Forschungszentrum Karlsruhe Association EURATOM-FZKInstitut für Hochleistungsimpuls-und Mikrowellentechnik(IHMD-76021 KarlsruheGermany also Universit(?t Karlsruhe Institut für H(?chstfrequenztechnik und ElektronikD-76128 KarlsruheGermany Forschungszentrum Karlsruhe Association EURATOM-FZKInstitut für Hochleistungsimpuls-und Mikrowellentechnik(IHMD-76021 KarlsruheGermany Department of Engineering Physics and Mathematics Helsinki University of TechnologyFIN-02150 EspooFinland Forschungszentrum Karlsruhe Association EURATOM-FZKInstitut für Hochleistungsimpuls-und Mikrowellentechnik(IHMD-76021 KarlsruheGermany Forschungszentrum Karlsruhe Association EURATOM-FZKInstitut für Hochleistungsimpuls-und Mikrowellentechnik(IHMD-76021 KarlsruheGermany Institute of Applied Physics Russian Academy of SciencesNizhny Novgorod 603600Russia Forschungszentrum Karlsruhe Association EURATOM-FZKInstitut für Hochleistungsimpuls-und Mikrowellentechnik(IHMD-76021 KarlsruheGermany also Universit(?t Karlsruhe Institut für H(?chstfrequenztechnik und ElektronikD-76128 KarlsruheGermany

＜正＞ Measurements on a coaxial gyrotron equipped withmodified components have been *** a maximum rf-output power of 2.2 MW withan output efficiency of 28% has been *** efficiency of 30% （48% with depressedcollector） has been achieved at the nominal output powerof 1.5 *** mechanical stability of the insert underoperating conditions has been found to be within.±0.03 mm which is sufficiently low for stable long *** low frequency oscillations have beenidentified to be generated either inside the mirror box（474/386 MHz） or in the cathode region（21/82 MHz）.

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固定串联电容器在四川电网中的应用

电力设备 2007年第10期8卷 50-52页

作者： gerhard thumm Karl Uecker 周彦西门子股份有限公司西门子(中国)有限公司北京市100102

介绍了四川电网普提变电站侧安装的3台固定串联电容器(FSC)装置的系统设计情况,介绍了其主要部件(如电容器、金属氧化变阻器、旁路装置、旁路阻尼电路)的设计细节,对整体布置情况也进行了简要介绍。在315MVA的标称功率下,普提变电站串... 详细信息

介绍了四川电网普提变电站侧安装的3台固定串联电容器(FSC)装置的系统设计情况,介绍了其主要部件(如电容器、金属氧化变阻器、旁路装置、旁路阻尼电路)的设计细节,对整体布置情况也进行了简要介绍。在315MVA的标称功率下,普提变电站串联电容器的使用提高了四川电网现有500kV输电系统的稳定性。

关键词：电力网输电系统固定串联电容器补偿装置稳定性