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Rate-distortion optimized frame dropping and scheduling for multi-user conversational and streaming video

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第5期7卷 864-872页

作者： CHAKARESKI Jacob STEINBACH eckehard Ecole Polytechnique Federale de Lausanne Signal Processing Institute LTS4 Lausanne CH-1015 Switzerland Media Technology Group Institute of Communication Networks Munich University of Technology Munich D-80333 Germany

We propose a Rate-Distortion (RD) optimized strategy for frame-dropping and scheduling of multi-user conversa- tional and streaming videos. We consider a scenario where conversational and streaming videos share the forwarding resources at a network node. Two buffers are setup on the node to temporarily store the packets for these two types of video applications. For streaming video, a big buffer is used as the associated delay constraint of the application is moderate and a very small buffer is used for conversational video to ensure that the forwarding delay of every packet is limited. A scheduler is located behind these two buffers that dynamically assigns transmission slots on the outgoing link to the two buffers. Rate-distortion side information is used to perform RD-optimized frame dropping in case of node overload. Sharing the data rate on the outgoing link between the con- versational and the streaming videos is done either based on the fullness of the two associated buffers or on the mean incoming rates of the respective videos. Simulation results showed that our proposed RD-optimized frame dropping and scheduling ap- proach provides significant improvements in performance over the popular priority-based random dropping (PRD) technique.

关键词： Rate-distortion optimization, Video frame dropping, Conversational video, Streaming video, Distortion matrix, Hinttracks, Scheduling, Resource assignment

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Stress Peening—A Sophisticated Way of Normal Shot Peening

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材料科学与工程（中英文A版） 2019年第2期9卷 56-63页

作者： eckehard Mueller Faculty for Mechanical Engineering Bochum University of Applied Sciences D-44801 Bochum and Steinbeis-Transfercenter for SPRING Technology Component Behavior and Process D-58638 Iserlohn Germany

Stress peening is a special way of shot peening. The method is explained, and applications will be shown and discussed. These applications are seldom and mostly concentrated on spring industry. Here is the main process to increase the induced residual stresses to elongate the fatigue life. On the other hand, if no elongation is necessary, the weight of component can be decreased which is a basic question today. Also, the dimensions can be changed in a positive way.

关键词： Shot peening stress peening form peening fatigue strength

A Way to Determine the Maximum Inducible Residual Stresses in Steel by Mechanical Surface Treatment

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材料科学与工程（中英文A版） 2023年第2期13卷 48-51页

作者： eckehard Mueller Faculty of Mechanical Engineering Bochum University of Applied SciencesBochum 44801Germany Steinbeis-Transfer Center for Spring Technologies Component Behavior and ProcessIserlohn 58638Germany

The issue of determining the maximum compressive residual stress that can be induced through mechanical surface treatment is of great *** are two possible approaches,namely stress peening and stress rolling,both to determine the *** with high hardness may be under the yield strength,while for those with lower tensile strength,the hardness is increased,and the limit is above the tensile strength.

关键词： Residual stress deep rolling shot peening stress peening stress rolling

Standardization of English Navigation Terminology in Railway Traffic Domain

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Journal of Civil Engineering and Architecture 2015年第1期9卷 57-63页

作者： Ayse Yurdakul eckehard Schnieder Institute for Traffic Safety and Automation Engineering Technische Universitgit Braunschweig (Braunschweig University ofTechnology) Braunschweig D-38106 Germany

The technical progress and the globalization accelerate rapidly the development of new disciplines and sub-disciplines. Consequently, new and specific terminology is necessary. In addition, the interdisciplinarity contributes as well to the development of communication problems between non-professionals and experts of a special domain or between experts of different domains--as well at international level. Usually, technical terms are defined differently according to their domains. Therefore, a new terminological approach will avoid semantic vagueness as synonymy, antonymy, risk of confusion, hypernymy-hyponymy relations and polysemy, homonymy, etc.. For example, the terms ＂localization＂ and ＂positioning＂ are prototypes for this semantic vagueness. The objective of the iglos （＂intelligent glossary＂） terminology work of the Institute of Traffic Safety and Automation Engineering of the Technische Universigit Braunschweig is to clarify the multilingual and multidisciplinary misunderstanding between special languages of different domains by standardizing the definitions of technical terms. The focus of this paper lies on semantic problems of English navigation terminology in railway traffic domain and the clarification of the semantic vagueness between its terms with a modeling process and a linguistic method with different criteria. Finally, the result of these approaches should be a consistent navigation terminology in the railway domain.

关键词： Terminology methodological approach semantic vagueness iglos work consistent terminology navigation railway.

Water and Shot Peening of Aluminum 7020

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材料科学与工程（中英文A版） 2022年第3期12卷 73-80页

作者： Armirmohammad Jamali eckehard Mueller Bochum University of Applied Science Bochum 44801Germany Steinbeis-Transfer Center for Spring Technology Component Behavior and ProcessLangerfeldstr.53cIserlohn 58638Germany

Water jet peening is a young technology compared to the traditional shot *** is a suitable method to induce compressive residual stresses in surface layers of materials with low tensile *** roughness is relatively *** this study,water jet peening and shot peening is compared concerning induced compressive residual stresses and roughness at Aluminum *** two parameters influence essentially the durability of a component.

关键词： Waterjet peening shot peening residual stresses aluminum 7020

基于通信的列车运行控制系统安全通信协议的性能分析

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铁道学报 2017年第5期39卷 71-77页

作者：陈黎洁黄银霞刘宏杰 eckehard Schnieder 高莺中国铁道科学研究院标准计量研究所北京100081 北京交通大学列车运行控制系统国家工程研究中心北京100044 北京交通大学轨道交通控制与安全国家重点实验室北京100044 布伦瑞克工业大学交通安全与自动化研究所布伦瑞克38106 中国铁道科学研究院通信信号研究所北京100081

安全通信协议是保证基于通信的列车运行控制系统中通信安全的主要因素,其性能分析具有重要意义。针对基于通信的列车运行控制系统安全通信协议,选择分层赋时有色Petri网(CPN)对其进行研究,建立状态转换模型与包含数据延时和信道故障的模... 详细信息

安全通信协议是保证基于通信的列车运行控制系统中通信安全的主要因素,其性能分析具有重要意义。针对基于通信的列车运行控制系统安全通信协议,选择分层赋时有色Petri网(CPN)对其进行研究,建立状态转换模型与包含数据延时和信道故障的模型,通过改变数据延时的概率和信道无故障的概率,对安全通信协议的稳定性和失效率进行仿真,仿真结果对安全通信协议的设计有一定的参考意义,用概率论与数理统计知识对仿真结果进行分析,分析结果体现数据延时和信道故障是如何影响安全通信协议的性能的。分析结果表明基于通信的列车运行控制系统安全通信协议是合理的。

关键词：基于通信的列车运行控制系统安全通信协议有色Petri网概率论数理统计

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Three-Point Bending Test and Crack Detection by Acoustic Emission on Different Spring Steel Wires with Different Crystallographic Textures

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材料科学与工程（中英文A版） 2023年第3期13卷 53-67页

作者： Mathias Lorenz Mohammed Salih Daniela Schwerdt Nowfal Al-Hamdany Emad Maawad Norbert Schell eckehard Müller University of Wismar Faculty of Mechanical EngineeringPh.-Müller-Straße 14Wismar D-23966Germany Helmholtz Zentrum Hereon Institute of Materials MechanicsDepartment of Laser Processing and Structural AssessmentMax-Planck Str.1Geestacht D-21502Germany Helmholtz Zentrum Hereon Institute of Materials PhysicsMax-Planck-Str.1Geesthacht D-21502Germany Hochschule Bochum Department of Mechatronics and Mechanical EngineeringAm Hochschulcampus 1Bochum D-44801Germany Steinbeis-Transfercenter of Springtechnology Part behaviour und ProcessLangerfeldstr.53 cIserlohn D-58638Germany

In the production of compression springs,high forming velocities and grades of deformation during winding and setting may induce cracks that can lead to failure causing risks of an accident and *** AE(acoustic emission)technology,a non-destructive monitoring method,can detect acoustic signals reflected from *** establish this method in the production of technical springs,it was necessary,to find out whether the AE signal is influenced by material properties,phase fractions distribution from tempered martensite,retained austenite,and microstructure including crystallographic *** addition,it was investigated to what extent the detected AE signal can be useful to separate between an actual crack and other material *** an in-situ three-point bending test with the AE technology,macro-and micro-crack-typical AE signals were detected for five different spring steel wires(SH,VDSiCr,and FDSiCr according to EN-10270-1 and EN-10270-2).The relative energy related to the initiation,propagation,and growth of cracks caused by mechanical stress was measured using a piezoelectric *** a crack AE signal appeared for the first time,the bending tests were stopped *** results show that the frequency spectrum combined with the intensity of the acoustic signals generated during crack growth depends on the material properties and the crystallographic ***,it could be shown that it is possible to differentiate between micro-crack-typical AE signals and other signals that result from different material responses.

关键词： Technical springs AE analysis micro-computer tomography texture

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如何提升切削生产能源效率

现代制造 2014年第2期 26-29页

作者： eckehard KALHFER JOCHEN KRESS 阿伦应用技术大学 Mapal Dr.Kress KG公司董事会

能源成本不断走高,通过分析切削设备刀具能源消耗与切削工序,可确定能效提升的具体方法;同时,优化刀具和切削工序已成为其中一项主要着眼点。现代制造业与工业已离不开能源消耗。随着全球人口不断膨胀,生活水平提升与经济日益增长正将...

能源成本不断走高,通过分析切削设备刀具能源消耗与切削工序,可确定能效提升的具体方法;同时,优化刀具和切削工序已成为其中一项主要着眼点。现代制造业与工业已离不开能源消耗。随着全球人口不断膨胀,生活水平提升与经济日益增长正将能源消耗推向更高峰。然而,煤炭、石油和生物燃料等能源正处于使用受限地步。在能源需求不断上扬的同时,众多局限也逐渐产生,这导致了能源成本的长期走高。在这样的大背景下,生产过程能源效率便成为今后实现现代制造业的技术推动力。然而,切削生产能源效率如何才能得

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围绝经期综合征的植物疗法:兼论黑升麻的研究

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国际妇产科学杂志 2010年第4期37卷 230-236页

作者： eckehard Liske 马晓艳白文佩 Technical University of Braunschweig Germany

妇女健康倡议(WHI)临床试验的结果提示,应着重关注传统的激素治疗围绝经期综合征的安全性。在围绝经期综合征治疗中,替代药物的地位可能会逐渐提升;大量设计良好的临床试验为其可信度提供支持性科学证据。传统医学史上长期应用的、具有... 详细信息

妇女健康倡议(WHI)临床试验的结果提示,应着重关注传统的激素治疗围绝经期综合征的安全性。在围绝经期综合征治疗中,替代药物的地位可能会逐渐提升;大量设计良好的临床试验为其可信度提供支持性科学证据。传统医学史上长期应用的、具有药物特性的植物是治疗各种疾病的重要手段。以植物药为主的自然疗法也备受关注。如今,植物药应用于缓解围绝经期综合征已很普及,尤其是黑升麻已得到众多研究的认可。对缓解围绝经期综合征的植物药(主要是黑升麻)的安全性及有效性做文献综述。

关键词：围绝经期更年期综合征植物药疗法治疗安全性有效性黑升麻

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