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Intelligent electrical energy distribution and consumption: SMARTGRID [keynote speaker 3] 智能配电和用电:SMARTGRID[主讲人3]
Pub Date : 2014-10-21 DOI: 10.1109/EMS.2014.103
J. S. Janosy
Summary form only given. We are living with networks surrounding us. The first such network was probably the postal services, and now the youngsters are already using 4G mobile internet. Megawatts and gigawatts are not so easy to handle than megabytes and gigabytes. Transferring huge amounts of electrical energy requires big investments. The story started at the end of the 19th century with steam engines, generating power first for the factories, later for the settlements of the workers, moving close to the big industrial centres. Connecting those resulted in national grids available at least for the urbanized areas. It may sound strange, but the consumption habits have changed very little during the last 120 years. There is a meter outside the house and anybody can draw any time as much energy as he/she pleases. All this happening with fixed prices not depending upon the actual state of the supply and the demand - which is rather strange nowadays. The events on 11th of Sept. 2001 taught us that we are vulnerable even at home. The 2003 big blackout lasting four days on the east coast of USA and causing huge damages and even losses of lives implied that something has to be done: it should not happen any more. We already know from the information technology: networks should be redundant, diverse, distributed, hierarchically built, self-diagnosing and self-healing in order to be able to provide robust and reliable service. How to achieve that? On the other hand, the unpredictable and renewable energy resources are growing very rapidly. Photovoltaic cells, wind turbines, biogas, etc. They are relatively small, but very numerous and they cannot be handled efficiently in the oldfashioned centralized way. We need local energy storage as much as possible to cover periods of time when the sun is down and the wind is not blowing. That implies that customers have to be smart, more intelligent to optimize the various possibilities in the environment of new, fast-changing flexible electricity tariffs. Different countries are in different situation, depending upon the different history and levels of development. There is no common approach to improve. There will be different ideas, different methods presented and compared in a relatively easy understandable way. This is where our knowledge and experience steps in: simulation. Experimenting with big power is expensive, but the modeling is straightforward and reliable, and different approaches can be worked out relatively easy and this should not last very long periods of time.
只提供摘要形式。我们生活在网络的包围中。第一个这样的网络可能是邮政服务,现在年轻人已经在使用4G移动互联网。兆瓦和千兆瓦没有兆和千兆那么容易处理。转移大量电能需要大量投资。这个故事始于19世纪末的蒸汽机,它首先为工厂发电,后来为靠近大型工业中心的工人定居点发电。将这些电网连接起来,形成了至少在城市化地区可用的国家电网。这听起来可能很奇怪,但在过去的120年里,消费习惯几乎没有改变。房子外面有一个电表,任何人都可以在任何时候随心所欲地汲取能量。所有这一切都发生在固定价格的情况下,而不是依赖于实际的供求状况——这在今天是相当奇怪的。2001年9月11日的事件告诉我们,即使在国内,我们也是脆弱的。2003年美国东海岸持续4天的大停电,造成了巨大的损失,甚至生命损失,这意味着必须采取措施:不应该再发生这种情况。我们已经从信息技术中知道:网络应该是冗余的、多样的、分布式的、分层构建的、自诊断和自修复的,以便能够提供健壮可靠的服务。如何做到这一点?另一方面,不可预测的和可再生的能源增长非常迅速。光伏电池、风力涡轮机、沼气等。它们相对较小,但数量非常多,不能以旧式的集中方式有效地处理。我们需要尽可能多地在当地储存能量,以便在太阳下山、没有风的时候储存能量。这意味着客户必须更聪明,更聪明地在新的、快速变化的灵活电价环境中优化各种可能性。不同的国家有不同的情况,取决于不同的历史和发展水平。没有通用的改进方法。会有不同的想法,不同的方法以一种相对容易理解的方式呈现和比较。这就是我们的知识和经验的作用:模拟。大功率的实验是昂贵的,但建模是直接和可靠的,不同的方法可以相对容易地制定出来,这应该不会持续很长时间。
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引用次数: 3
Feature selection in data-driven systems modelling [keynote speaker 1] 数据驱动系统建模中的特征选择[主讲人1]
Pub Date : 2014-10-21 DOI: 10.1109/EMS.2014.79
Q. Shen
Summary form only given, as follows. Feature selection (FS) addresses the problem of selecting those system descriptors that are most predictive of a given outcome. Unlike other dimensionality reduction methods, with FS the original meaning of the features is preserved. This has found application in tasks that involve datasets containing very large numbers of features that might otherwise be impractical to model and process (e.g., large-scale image analysis, text processing and Web content classification). This talk will focus on the development and application of FS mechanisms based on rough and fuzzyrough theories. Such techniques provide a means by which data can be effectively reduced without the need for user-supplied information. In particular, fuzzy-rough feature selection (FRFS) works with discrete and real-valued noisy data (or a mixture of both). As such, it is suitable for regression as well as for classification. The only additional information required is the fuzzy partition for each feature, which can be automatically derived from the data. FRFS has been shown to be a powerful technique for data dimensionality reduction. In introducing the general background of FS, this talk will first cover the rough-set-based approach, before focusing on FRFS and its application to real-world problems. The talk will conclude with an outline of opportunities for further development.
仅给出摘要形式,如下。特征选择(FS)解决了选择那些最能预测给定结果的系统描述符的问题。与其他降维方法不同,FS保留了特征的原始含义。这在涉及包含大量特征的数据集的任务中得到了应用,否则这些特征可能无法建模和处理(例如,大规模图像分析、文本处理和Web内容分类)。本讲座将重点讨论基于粗糙和模糊理论的FS机制的发展和应用。这种技术提供了一种方法,可以在不需要用户提供信息的情况下有效地减少数据。特别是,模糊粗糙特征选择(FRFS)适用于离散和实值噪声数据(或两者的混合)。因此,它既适用于回归,也适用于分类。唯一需要的附加信息是每个特征的模糊划分,它可以从数据中自动导出。FRFS已被证明是一种强大的数据降维技术。在介绍FS的一般背景时,本演讲将首先介绍基于粗糙集的方法,然后重点介绍FRFS及其在现实问题中的应用。谈话结束时将概述进一步发展的机会。
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引用次数: 0
Big data in [keynote speaker 2] 大数据中的[主讲人2]
Pub Date : 2014-10-21 DOI: 10.1109/EMS.2014.80
H. Hessling
Summary form only given, as follows. The resolution power of experiments is improving steadily and the data rate production is rapidly increasing. The success of the experiments depends critically on handling effectively and efficiently huge amounts of data. The on-detector reduction of the data rate will be a major topic as only a fraction of the data can be archived for later long-term analyses. In the project “Large Scale Data Management and Analysis” (LSDMA) several Helmholtz centres and German universities are cooperating in order to support researchers in maintaining their huge amounts of data. Besides supporting individual scientific communities, generic services are being developed, e.g. Federated identity management; Federated data access; Meta data repositories; Archive services; Monitoring, modelling, optimization; and Data intensive computing & analysis. The talk will explore the general challenges of Big Data. Several instructive examples from different scientific communities are presented. An overview of the current status of the LSDMA project is given. In addition, recent results on real-time and near-real time analysis of Big Data are presented.
仅给出摘要形式,如下。实验分辨率稳步提高,数据率快速提高。实验的成功关键取决于有效和高效地处理大量数据。检测器上数据速率的降低将是一个主要主题,因为只有一小部分数据可以存档以供以后的长期分析。在“大规模数据管理和分析”(LSDMA)项目中,几个亥姆霍兹中心和德国大学正在合作,以支持研究人员维护他们的大量数据。除了支持单个科学社区外,通用服务也正在开发中,例如联邦身份管理;联邦数据访问;元数据存储库;档案服务;监测、建模、优化;数据密集型计算与分析。讲座将探讨大数据的一般挑战。介绍了来自不同科学界的几个有指导意义的例子。对LSDMA项目的现状进行了概述。此外,还介绍了大数据实时和近实时分析的最新成果。
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引用次数: 0
A Quasi-stationary Approach to the Approximate Solution of a FEA 3D Subject-Specific EMG Model 有限元三维主体肌电模型近似解的准平稳方法
Pub Date : 2012-11-14 DOI: 10.1109/EMS.2012.34
Jakob L. Honeder, P. Goebel, T. Mandl, M. Vincze, M. Schachinger
A structure based finite element analysis (FEA) model can be a means to gain better insight on how surface electromyography (EMG) signals are affected by limb geometry and tissue structures. Beyond that, and to optimize the control of myoelectric prostheses, such models can be used to evaluate signal separation algorithms, or to test the performance of different electrode configurations without the need to have several measurement sessions with a human subject present. This work presents a novel approach to the approximate modeling of a three-dimensional, subject-specific, generic EMG model by using FEA. The problems stemming from the nonrigid and irregular geometry of human body parts, the nonlinear tissue properties over frequency and temperature, the various muscle-fiber innervation possibilities, and the overall complexity of the model, are solved by defining an adequate fiber source description, simulating the volume conductor FEA model as being quasi-stationary, normalizing the true forearm geometry to a cylinder and unrolling it to be able to apply Helmholtz's principle of superposition to combine simulation results for the solving of more complex muscle-fiber set-ups. Thus, the source description presented herein appears suitable for application to different subject-specific geometries, as shown additionally by the setting into the 'Musculus pectoralis' of a targeted muscle reinnervation subject. Hence in conclusion, the strategy applied yields an overall reduced complexity of the FEA model, and therefore, substantially simplifies the processing and the visualization of the simulation results.
基于结构的有限元分析(FEA)模型可以更好地了解表面肌电图(EMG)信号如何受到肢体几何形状和组织结构的影响。除此之外,为了优化对肌电假肢的控制,这些模型可以用来评估信号分离算法,或者测试不同电极配置的性能,而不需要在人类受试者在场的情况下进行多次测量。这项工作提出了一种新的方法来近似建模一个三维的,主题特定的,通用的肌电模型通过使用有限元分析。通过定义适当的纤维源描述,将体积导体有限元模型模拟为准稳态,解决了人体部位的非刚性和不规则几何形状、组织在频率和温度上的非线性特性、各种肌肉纤维神经支配的可能性以及模型的整体复杂性所引起的问题。将真实的前臂几何形状归一化为圆柱体,并展开它,以便能够应用亥姆霍兹的叠加原理将模拟结果结合起来,以解决更复杂的肌肉纤维结构。因此,本文提出的源描述似乎适用于不同的特定受试者的几何形状,如目标肌肉再神经支配受试者的“胸肌”设置所示。综上所述,所采用的策略总体上降低了有限元模型的复杂性,从而大大简化了仿真结果的处理和可视化。
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引用次数: 1
Ontology for Systems Engineering: Model-Based Systems Engineering 系统工程本体:基于模型的系统工程
Pub Date : 2012-11-14 DOI: 10.1109/EMS.2012.53
L. V. Ruijven
This paper presents an ontology for systems engineering, by means of a set of information models based on a modelling methodology derived from and a simplification of the ISO 15926 part 2 data model. The methodology matches the way people think and communicate and is designed specifically to be useful for engineers. The information models are derived from ISO 15288 System Life Cycle Processes. Based on the information models and the set of relationships defined herein one can, in combination with a reference data library, build or configure an information system or data exchange mechanism in order to support Systems Engineering processes or set up a specific product knowledge model. An implementation method based on RDF is given as example.
本文提出了一个系统工程的本体,通过一组基于建模方法的信息模型,该建模方法来源于ISO 15926第2部分数据模型的简化。这种方法与人们思考和交流的方式相匹配,并且是专门为工程师设计的。信息模型来源于ISO 15288系统生命周期过程。基于此处定义的信息模型和一组关系,可以结合参考数据库,构建或配置信息系统或数据交换机制,以支持系统工程过程或建立特定的产品知识模型。给出了一种基于RDF的实现方法。
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引用次数: 3
PSO of Neural Networks to Predict Busy Times of Cellular Traffic for Assignment to TV Idle Channels by Cognitive Radio 基于神经网络的PSO预测蜂窝通信量的繁忙时间,并利用认知无线电将其分配给电视空闲频道
Pub Date : 1900-01-01 DOI: 10.1109/EMS.2013.8
W. Ojenge, T. Afullo, P. Ogao, William OkelloOdongo
Kenya has identified radio spectrum as a keydriver in its development. Yet, globally, radio spectrum is inefficiently utilized due to ITU's static spectrum allocation.In Kenya, mobile operators are running short of bandwidth due to deployment of 4G services, which enable super fast mobile broadband/internet. In the USA and UK, FCC and Ofcom, respectively, have made effort to allow opportunistic 'poaching' of licensed spectrum as long as communication of licensed user is not interfered with. This has focused research on use of cognitive radio, which would use its sensor networks to establish which TV channels are idle in order to allocate them temporarily to cellular networks.Enabling the cognitive radio to predict which channels shall lie idle at what times introduces better planning and more temporally-efficient allocation. This study explores the viability of predicting the times of mobile telephony traffic jam for a mobile service operator with poor QoS rating within a cell of perennial mobile traffic jam in order to explore whether those times can map well with the TV spectrum holes. The times of the TV spectrum holes shall be determined in a later study.
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引用次数: 3
Improving Wireless Ad Hoc Networks Lifetime through Energy Exhaustion Recovering 通过能量消耗恢复提高无线自组织网络寿命
Pub Date : 1900-01-01 DOI: 10.1109/EMS.2010.81
Z. Aliouat, M. Aliouat
In wireless networks environment, nodes are powered by exhaustible energy provided by batteries with limited duration. When the energy budget of a node comes to exhaustion, many undesirable situations may occur, ranking from minor alternative route discovery to unbearable network partition. Another situation which has not yet paid attention is one reached when a distributed application requires more running time than that will be provided by nodes capability. Up to now, lots of research has been devoted to this problem but all proposals addressed this issue attempt to alleviate this inconvenience through energy consuming optimization way. However, the problem remains as a hole when running long lived ubiquitous distributed applications. So, the expected results could not be provided if provisions to overcome battery depletion are not ensured. In this paper, we propose several strategies which may overcome node energy lack and may be used in any battery–based system. So, when a battery of a node suffers from depletion, either a new battery has to replace the former one, enabling the running processes to terminate execution, or uncompleted processes have to migrate to another node with large energy budget. The strategies have been compared according some convenient metrics.
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引用次数: 0
Voice Pathology Detection Using Vocal Tract Area 声道区语音病理检测
Pub Date : 1900-01-01 DOI: 10.1109/EMS.2013.29
Muhammad Ghulam
In this paper, we develop an automatic voice pathology detection (VPD) system based on voice production theory. More specifically, we extract features from vocal tract area function from the tubes, which are closely located to the glottis. Voice pathology is related to a vocal fold problem, and hence the vocal tract area connected to the vocal fold or the glottis should exhibit irregular patterns over frames in case of a sustained vowel for a pathological voice. This irregular pattern is quantified in the form of variance across the frames to distinguish between normal and pathological voices. The proposed VPD system is evaluated on the MEEI database with sustained vowel samples and achieves 99.02%±0.01 accuracy.
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引用次数: 5
Proposal of System Testing Integration into Safety Critical System Design Process Supported by SysML 系统测试集成到SysML支持的安全关键系统设计过程中的建议
Pub Date : 1900-01-01 DOI: 10.1109/EMS.2014.74
L. Spendla, Lukas Hrcka
This paper focuses on system testing in designing and developing the process of safety critical systems. The proposal aims at identifying the requirements for system testing of safety critical systems and connects them with system model defined in the SysML language. The design and development process is based on analysis of standards and guidelines carried out in our previous work that focused on system testing process in terms of execution. The proposed model is captured using appropriate SysML diagrams.
{"title":"Proposal of System Testing Integration into Safety Critical System Design Process Supported by SysML","authors":"L. Spendla, Lukas Hrcka","doi":"10.1109/EMS.2014.74","DOIUrl":"https://doi.org/10.1109/EMS.2014.74","url":null,"abstract":"This paper focuses on system testing in designing and developing the process of safety critical systems. The proposal aims at identifying the requirements for system testing of safety critical systems and connects them with system model defined in the SysML language. The design and development process is based on analysis of standards and guidelines carried out in our previous work that focused on system testing process in terms of execution. The proposed model is captured using appropriate SysML diagrams.","PeriodicalId":350614,"journal":{"name":"European Symposium on Computer Modeling and Simulation","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122720787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
User-Centric Energy Cost Analysis of Industrial Automation Systems 以用户为中心的工业自动化系统能源成本分析
Pub Date : 1900-01-01 DOI: 10.1109/EMS.2011.26
A. Beck, N. Jazdi
{"title":"User-Centric Energy Cost Analysis of Industrial Automation Systems","authors":"A. Beck, N. Jazdi","doi":"10.1109/EMS.2011.26","DOIUrl":"https://doi.org/10.1109/EMS.2011.26","url":null,"abstract":"","PeriodicalId":350614,"journal":{"name":"European Symposium on Computer Modeling and Simulation","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133194887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
European Symposium on Computer Modeling and Simulation
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