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2015 6th International Conference on Information, Intelligence, Systems and Applications (IISA)最新文献

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Simulating active and reactive energy markets 模拟有功和无功能源市场
Antonia Nasiakou, M. Vavalis, D. Bargiotas
The aim of this paper is to present our initial efforts on understanding, mainly through models and simulations, the practical interactions between reactive and active energy markets in a power grid. The reactive power markets, regardless the obvious importance, have not received significant research and development attention so far. Recent studies concern the characteristics of such markets focusing almost exclusively on the producers' viewpoint. In this paper we propose to study the effect of reactive power at the consumer side and the price that has to pay. Experiments exhibiting the interaction of the reactive and active energy markets are presented and analyzed through a simple IEEE bus configuration and a case study of a power grid with a total of approximately 30000 households with varying energy requirements and distributed energy producers.
本文的目的是介绍我们在理解电网中无功和有功能源市场之间实际相互作用方面的初步努力,主要是通过模型和模拟。尽管无功功率市场的重要性显而易见,但迄今为止还没有得到重大的研发关注。最近的研究关注这些市场的特点,几乎完全集中在生产者的观点上。在本文中,我们建议研究无功功率在消费者端的影响和必须支付的价格。通过一个简单的IEEE总线配置和一个电网的案例研究,展示了无功和有功能源市场的相互作用,并对其进行了分析,该电网共有大约30000个家庭,具有不同的能源需求和分布式能源生产商。
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引用次数: 3
Design of a Shared Memory mechanism for efficient paralell processing in PostgreSQL PostgreSQL中高效并行处理的共享内存机制设计
Yoshifumi Ujibashi, Minoru Nakamura, T. Tabaru, T. Hashida, Motoyuki Kawaba, L. Harada
PostgreSQL is a reliable and mature OSS RDBMS that has become widely utilized in enterprise systems recently. In order to meet the increasing performance requirements of such systems, PostgreSQL OSS Community enforced PostgreSQL version 9.4 parallel execution framework introducing the Dynamic Shared Memory and the Dynamic Background Workers. However, the Dynamic Shared Memory does not guarantee that shared data are mapped to the same address space in the processes and thus data with pointers cannot be straightly shared without local copies. In this paper we propose a new shared memory framework called Shared MemoryContext that provides a shared memory mapped to the same address to all processes. It enables an efficient parallel processing in PostgreSQL by avoiding unnecessary data copies of inter-process shared data. The Shared MemoryContext interface is compatible with PostgreSQL's MemoryContext interface and thus existing PostgreSQL routines can be used for parallel processing without modification.
PostgreSQL是一种可靠、成熟的OSS RDBMS,近年来在企业系统中得到了广泛的应用。为了满足这些系统日益增长的性能要求,PostgreSQL OSS社区强制实施了PostgreSQL 9.4版本并行执行框架,引入了动态共享内存和动态后台工作者。但是,动态共享内存不能保证共享数据映射到进程中的相同地址空间,因此,如果没有本地副本,就不能直接共享带有指针的数据。在本文中,我们提出了一个新的共享内存框架,称为shared MemoryContext,它为所有进程提供了一个映射到相同地址的共享内存。它通过避免进程间共享数据的不必要的数据副本,在PostgreSQL中实现了高效的并行处理。Shared MemoryContext接口与PostgreSQL的MemoryContext接口兼容,因此现有的PostgreSQL例程无需修改即可用于并行处理。
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引用次数: 2
Evolutionary algorithm for the minimum cost hybrid berth allocation problem 最小代价混合泊位分配问题的进化算法
N. Kovač, T. Davidović, Z. Stanimirović
A new optimization method based on the Evolutionary Algorithm (EA) is developed for solving the Minimum Cost Hybrid Berth Allocation Problem (MCHBAP) with fixed handling times of vessels. The goal of the MCHBAP is to minimize the total costs of waiting and handling, as well as earliness or tardiness of completion, for all vessels. It is well known that this kind of problem is NP hard. The main problem one faces when dealing with the MCHBAP is a large number of infeasible solutions. In order to overcome this problem, we propose an EA implementation adapted to the problem that involves four types of mutation operator and two additional improvement strategies, but no crossover operator. The proposed EA implementation is benchmarked on real life test instances. Our computational results show that the proposed EA method is able to find optimal solutions for real life test instances within relatively short running time, having in mind the nature of the considered problem.
提出了一种基于进化算法的最小成本混合泊位分配问题优化方法。MCHBAP的目标是最大限度地减少所有船舶的等待和处理总成本,以及提前或延迟完成。众所周知,这类问题是NP困难的。在处理MCHBAP时面临的主要问题是大量不可行的解决方案。为了克服这一问题,我们提出了一种适合该问题的EA实现,该实现涉及四种类型的突变算子和两种额外的改进策略,但没有交叉算子。建议的EA实现是在真实的测试实例上进行基准测试的。我们的计算结果表明,考虑到所考虑问题的性质,所提出的EA方法能够在相对较短的运行时间内找到真实生活测试实例的最佳解决方案。
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引用次数: 3
Sloginsky drawings of graphs 斯洛斯基画的图表
M. Bekos, M. Kaufmann, R. Krug
In this paper we combine the recently introduced slanted orthogonal (for short: slog) model with the traditional Kandinsky approach into the new Sloginsky model. The slog model introduces diagonal segments into orthogonal drawings and restricts crossings exclusively to these diagonal segments. Additionally, the traditional 90° bends of orthogonal drawings are replaced by so called half-bends. While the slog model is restricted to graphs of maximum vertex degree four, the Kandinsky model allows arbitrary vertex degree. By combining the two approaches we can profit from the advantages of both models, namely arbitrary vertex degree and increased readability. Since we seek drawings of non-planar graphs, we adopt the topology-shape-metrics (TSM) approach. Motivated by a recent complexity result that shows that the problem of minimizing the total number of bends is NP-hard even for plane graphs [1], we give an ILP formulation that results in Sloginsky drawings that are optimal in terms of the total number of bends. We also perform experiments and discuss properties of the new model.
本文将最近提出的倾斜正交(sllog)模型与传统的康定斯基方法结合起来,形成了新的斯洛斯基模型。该模型在正交图中引入对角线段,并将交叉限制在这些对角线段内。此外,传统的正交图的90°弯曲被所谓的半弯曲所取代。当slog模型被限制在最大顶点度为4的图时,Kandinsky模型允许任意顶点度。通过结合这两种方法,我们可以利用这两种模型的优点,即任意顶点度和提高可读性。由于我们寻求非平面图形的绘图,我们采用拓扑形状度量(TSM)方法。最近的一个复杂性结果表明,即使对于平面图[1],最小化弯曲总数的问题也是np困难的,我们给出了一个ILP公式,该公式导致sloinsky图在弯曲总数方面是最优的。我们还进行了实验并讨论了新模型的性质。
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引用次数: 2
Interprofessional critical care training: Interactive virtual learning environments and simulations 跨专业重症监护培训:交互式虚拟学习环境和模拟
A. Dubrowski, B. Kapralos, K. Kanev, M. Jenkin
Interprofessional critical care training (ICCT) is an important activity that helps develop and formalize an understanding of the roles, expertise, and unique contributions attributed to members of multi-disciplinary teams in critical situations. Such training is of particular importance for teams that operate under tight time constraints in highly stressful conditions, such as that found in medicine. Here we describe our first steps towards developing a virtual learning environment (simulation) specifically aimed at ICCT for pediatric critical care teams. Our virtual learning environment employs a tabletop computing platform with novel image-based sensing technologies to enable collaboration and interaction amongst a group of trainees while promoting a learner-centric approach where the simulation is tailored specifically to the needs of each trainee.
跨专业重症监护培训(ICCT)是一项重要的活动,它有助于发展和形式化对危急情况下多学科团队成员的角色、专业知识和独特贡献的理解。这种培训对于在紧张的时间限制下在高度紧张的条件下工作的团队,例如在医学领域,是特别重要的。在这里,我们描述了我们开发一个虚拟学习环境(模拟)的第一步,专门针对儿科重症监护团队的ICCT。我们的虚拟学习环境采用桌面计算平台和新颖的基于图像的传感技术,使一组受训者之间能够协作和互动,同时促进以学习者为中心的方法,其中模拟是专门针对每个受训者的需求量身定制的。
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引用次数: 3
Monitoring of the pan-European marine data management infrastructure in the framework of EU/FP7 SeaDataNet II project: SeaDataNet monitoring infrastructure 在EU/FP7 SeaDataNet II项目框架下监测泛欧海洋数据管理基础设施:SeaDataNet监测基础设施
A. Lykiardopoulos, S. Balopoulou, S. Iona, P. Vavilis, M. Pantazi, K. Kalkavouras
In the context of EU/FP7-funded SeaDataNet II (SDN-II) project that concerns the monitoring of the pan-European infrastructure for Ocean and Marine Data Management, the Hellenic Center for Marine Research (HNODC) has developed and delivered a Network Monitoring System to ensure the "up and running" operation (availability) of computers (hosts) and network services (web services, Authorization and Authentication services, Download services etc) within the SeaDataNet network architecture. This system is able to detect and report failures of devices, services or connections and send messages (alerts) to designated locations to notify system administrators so as to ensure the proper functionality of the services. All events that changing the operational status of the network are recorded and stored in a database. Implementing a proper mathematical formula is able to calculate the availability of the separate SDN-II services as well as the total availability index of the network. The calculation this index is a mandatory key-point for any service provider (including SDN-II) to be able to sign Service Level Agreenets (SLAs).
在欧盟/ fp7资助的SeaDataNet II (SDN-II)项目的背景下,该项目涉及监测泛欧海洋和海洋数据管理基础设施,希腊海洋研究中心(HNODC)开发并交付了一个网络监测系统,以确保SeaDataNet网络架构内计算机(主机)和网络服务(web服务、授权和认证服务、下载服务等)的“启动和运行”。该系统能够检测和报告设备、服务或连接的故障,并向指定地点发送消息(警报)通知系统管理员,以确保服务的正常运行。所有改变网络运行状态的事件都被记录并存储在数据库中。实现适当的数学公式可以计算出SDN-II各业务的可用性以及网络的总可用性指数。该索引的计算是任何服务提供商(包括SDN-II)能够签署服务水平协议(sla)的强制性关键点。
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引用次数: 0
Cognitive and ontological modeling for decision support in the tasks of the urban transportation system development management 城市交通系统发展管理任务决策支持的认知和本体论建模
D. Parygin, N. Sadovnikova, A. Kravets, E. Gnedkova
Rapid changes in the urban environment as a results of technological progress require new approaches to the development of transport infrastructure, which will increase the performance of the transport system, improve the quality of its operation and safety. It is necessary to maintain the quality of life, business and economical stability of the city. However, the development of the transport system or its radical transformation is a large-scale investment, which is not always easy to decide, especially in the face of uncertainty: lack of knowledge about the process and fluctuations in the economy. Deficient of transport services aspects study will inevitably lead to losses of life quality. Thereby the development of methods for optimizing the route network of public transport, which will link the demand and supply of transport services, is an urgent task. In this paper, we propose a new approach to the construction and refinement of the ontological model of knowledge representation about the city transport system using cognitive modeling.
由于技术进步,城市环境发生了迅速的变化,因此需要采用新的方法来发展运输基础设施,这将提高运输系统的性能,改善其操作质量和安全。它是维持城市生活质量、商业和经济稳定的必要条件。然而,交通系统的发展或其彻底改造是一项大规模投资,这并不总是容易决定的,特别是在面对不确定性的情况下:缺乏对经济过程和波动的了解。缺乏交通服务方面的研究必然会导致生活质量的损失。因此,发展优化公共交通路线网络的方法,将运输服务的需求和供应联系起来,是一项紧迫的任务。本文提出了一种基于认知建模的城市交通系统知识表示本体论模型的构建和改进方法。
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引用次数: 20
Tracking events in mobile device management system 移动设备管理系统中的事件跟踪
N. D. Bui, A. Kravets, T. Nguyen, L. Nguyen
In this paper, we use the Message Queue Telemetry Transport (MQTT) protocol to track events of user mobile device and record database for analyzing later with special criteria (key performance indicators). It also shows how to establish a publish/subscribe connection between mobile device (MQTT client) and a MQTT broker for publish events. MQTT brokers can listen in incoming events through the input adaptors, store those events and then, visual dashboard show all events.
在本文中,我们使用消息队列遥测传输(MQTT)协议来跟踪用户移动设备的事件,并记录数据库以供以后以特定的标准(关键性能指标)进行分析。它还展示了如何在移动设备(MQTT客户机)和用于发布事件的MQTT代理之间建立发布/订阅连接。MQTT代理可以通过输入适配器侦听传入事件,存储这些事件,然后,可视化仪表板显示所有事件。
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引用次数: 3
Challenges in the implementation of context-aware scenarios within emergency rooms 在急诊室内实施情境感知情景的挑战
Amaia Ortiz de Lejarazu, P. López-Iturri, E. Aguirre, L. Azpilicueta, F. Falcone, Fran Casino, A. Solanas
One of the fundamental elements in order to implement context aware scenarios to enable the deployment of Smart Health is the use of wireless transceivers. Modern wireless systems make use of high order modulation schemes in order to increase spectral efficiency dynamically, leading to interference dependent coverage-capacity relations. In this work, performance of wireless sensor network nodes deployed in an Emergency Room complex will be analyzed in terms of topological dependence and the influence to non-desired interference sources. The results provide estimations in order to adequately deploy multi-system wireless systems in order to increase the system capacity and to reduce the overall interference levels.
为了实现能够部署智能健康的上下文感知场景,一个基本要素是使用无线收发器。现代无线系统为了动态提高频谱效率,采用了高阶调制方案,导致了干扰依赖的覆盖容量关系。在这项工作中,部署在急诊室综合体中的无线传感器网络节点的性能将从拓扑依赖性和对非期望干扰源的影响方面进行分析。研究结果为充分部署多系统无线系统提供了估计,以增加系统容量并降低总体干扰水平。
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引用次数: 2
Biobibliometrics & gene connections 生物文献计量学与基因联系
Yannis Martzoukos, S. Papavlasopoulos, M. Syrrou, M. Poulos
In recent years there has been an increasingly amount of data stored in biomedical Databases. The information provided by scientist is stored but it is difficult to be analyzed based on specific parameters. New Scientific fields as Bioinformatics seem to be the tool needed to extract scientifically important data based on experimental results and information provided by papers and journals. In this paper we will propose a solution to the problem in hand, based on biobliometrics, statistical analysis and Bioinformatics. The proposed system could become a useful tool against the struggle of scientists and medical professionals in the near future.
近年来,生物医学数据库中存储的数据越来越多。科学家提供的信息是存储的,但很难根据具体参数进行分析。生物信息学等新科学领域似乎是根据实验结果和论文和期刊提供的信息提取科学重要数据所需的工具。在本文中,我们将提出一个解决手头的问题,基于生物测量学,统计分析和生物信息学。在不久的将来,拟议的系统可能成为对抗科学家和医疗专业人员斗争的有用工具。
{"title":"Biobibliometrics & gene connections","authors":"Yannis Martzoukos, S. Papavlasopoulos, M. Syrrou, M. Poulos","doi":"10.1109/IISA.2015.7387989","DOIUrl":"https://doi.org/10.1109/IISA.2015.7387989","url":null,"abstract":"In recent years there has been an increasingly amount of data stored in biomedical Databases. The information provided by scientist is stored but it is difficult to be analyzed based on specific parameters. New Scientific fields as Bioinformatics seem to be the tool needed to extract scientifically important data based on experimental results and information provided by papers and journals. In this paper we will propose a solution to the problem in hand, based on biobliometrics, statistical analysis and Bioinformatics. The proposed system could become a useful tool against the struggle of scientists and medical professionals in the near future.","PeriodicalId":433872,"journal":{"name":"2015 6th International Conference on Information, Intelligence, Systems and Applications (IISA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129575193","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: 5
期刊
2015 6th International Conference on Information, Intelligence, Systems and Applications (IISA)
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