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2016 Third International Conference on Mathematics and Computers in Sciences and in Industry (MCSI)最新文献

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A Non-blocking Online Cake-Cutting Protocol 无阻塞在线切蛋糕协议
K. Kubo, Yoshifumi Manabe
This paper proposes an online cake-cutting protocol without a long wait. Cake-cutting protocols are used to fairly divide a heterogeneous divisible good among some number of people. Though many protocols have been proposed, most of them assume that all people must simultaneously execute one protocol. Walsh proposed an online cake-cutting protocol, in which each player can join to the protocol at any time and leave when his portion of the cake is assigned. However, each player must wait until another player arrives, thus each player's waiting time is unbounded when no other player arrives. A deadlock might occur if the number of actually arriving players is unknown. This paper proposes a new online cake-cutting protocol without above blocking of players by introducing a discount factor to the utilities. Each player must wait for a fixed constant time if no other player arrives. The protocol is truthful, immediately envy-free, and meta-envy-free for risk-adverse players.
本文提出了一种无需长时间等待的在线切蛋糕协议。切蛋糕协议用于在一定数量的人中公平地分配异质可分物品。虽然已经提出了许多协议,但其中大多数都假设所有人必须同时执行一个协议。沃尔什提出了一个在线切蛋糕协议,每个玩家可以在任何时候加入协议,当分配到他的蛋糕份额时离开。但是,每个玩家必须等待另一个玩家到达,因此当没有其他玩家到达时,每个玩家的等待时间是无界的。如果实际到达的玩家数量未知,可能会发生死锁。本文提出了一种新的在线切蛋糕协议,该协议通过在效用中引入折扣因子来避免玩家的上述阻塞。如果没有其他玩家到达,每个玩家必须等待一个固定的常数时间。协议是真实的,立即没有嫉妒,对风险厌恶的玩家来说,也没有元嫉妒。
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引用次数: 1
Detection of Occupancy Events from Indoor Air Monitoring Data 从室内空气监测数据中检测占用事件
A. Szczurek, M. Maciejewska
In recent years, there has been observed an increase of interest in maintaining proper air quality in spaces occupied by people. Various strategies offer to provide the relevant information. In this work we consider attaining it on the basis of indoor air behavior episodes, which are evident from observations or measurements made over a period of time. Initially we focused on the automatic detection of events, which are building blocks of episodes. Events were defined as circumstances when indoor air remained under a fixed influence e.g. from a particular combination of factors affecting it. To reach the objective we applied change point analysis to the time series of a selected indoor air parameter, which was monitored in a continuous manner. There were examined two algorithms of change point detection coupled with the refining criteria, proposed using the domain knowledge. It was demonstrated that change point analysis of CO2 concentration time series allows to distinguish events associated with building use by occupants.
近年来,人们越来越关注在人们居住的空间内保持适当的空气质素。提供相关信息的策略多种多样。在这项工作中,我们考虑在室内空气行为事件的基础上实现它,这是从一段时间内进行的观察或测量中显而易见的。最初,我们专注于事件的自动检测,这是剧集的组成部分。事件被定义为室内空气受到固定影响的情况,例如,受到影响它的特定因素组合的影响。为了达到目的,我们对选定的室内空气参数的时间序列进行了变化点分析,并以连续的方式进行了监测。研究了两种结合改进准则的变化点检测算法,提出了基于领域知识的变化点检测算法。研究表明,二氧化碳浓度时间序列的变化点分析可以区分与居住者使用建筑物相关的事件。
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引用次数: 3
Panspermia of GeoData in Support Systems for Design and Execution of Operational Procedures 地理数据在操作程序设计和执行支持系统中的生源论
George Tsavdaridis, E. Koukoutsis, N. Karadimas
In the present paper, the desired Data/Info that the operational officers need is examined, both during the design phase and during the execution of operational missions. This information has been developed and organized by several military and civilian authorities and organizations at national and international level, but there are severe problems in acquiring external collections of Data/Info. In addition, the observatories of information and repositories of data have collapsed by their large volume. The most significant note is the fact that the desired Data/Info is directly or indirectly georeferenced, very high volume, complex, diversified, with internal correlations and therefore requires special handling. Operational officers' duty is supported by useful and powerful tools such as Geographical Information Systems, which resolve complex geographical problems in order to take accurate and timely decisions. Nowadays, organizing of Support Systems for designing, monitoring and controlling of operational procedures follow ad hoc heuristic methodologies and forms of internal architectures, which are not able to handle large volume of data core (information), to achieve upgrading, thematic augmentation or shift and do not present the required desirable inner interoperability. The complexity of these Systems does not, also, permit the increasing or modification of the range of the data core (information) functions. There are many technical difficulties in organizing large sets of Data/Info in a single (even composite) Information System. It is imperative, by a systematic and orthological way to construct suitable organized georeferenced data cores (and programs) in order to support the operational procedures for a significant number of different missions. It is possible a general, common and adaptable core program to be constructed based on the aforementioned core data.
在本文件中,审查了业务干事在设计阶段和执行业务任务期间所需的所需数据/资料。这些资料是由几个军事和文职当局以及国家和国际一级的组织编制和整理的,但是在获取外部收集的数据/资料方面存在严重问题。此外,信息观察站和数据储存库因其庞大的数量而崩溃。最值得注意的是,所需的数据/信息是直接或间接的地理参考,数量非常大,复杂,多样化,具有内部相关性,因此需要特殊处理。行动人员的工作得到有用和强大的工具的支援,例如地理资讯系统,这些工具可以解决复杂的地理问题,以便作出准确和及时的决定。目前,用于设计、监测和控制操作程序的支持系统的组织遵循特别的启发式方法和内部架构形式,这些方法和形式无法处理大量数据核心(信息),无法实现升级、主题增强或转移,也无法呈现所需的理想的内部互操作性。这些系统的复杂性也不允许增加或修改数据核心(信息)功能的范围。在单一(甚至复合)信息系统中组织大量数据/信息存在许多技术困难。为了支持大量不同任务的操作程序,必须以系统和正交的方式构建合适的有组织的地理参考数据核心(和程序)。基于上述核心数据构建通用、通用、适应性强的核心程序是可能的。
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引用次数: 1
The Accounting Equation and Claims on Assets Value Change 会计方程式与资产价值变动债权
F. Juárez
The purpose of the study is to analyze the accounting equation and develop a new model, based on the dual concept of monetary units and the structure of assets and claims on assets. The analysis uses the identity and characteristic functions along with a coordinate transformation, to show that the assets-claims on assets relationship involves a change in claims on assets value. The identity function represents the dual concept of the monetary units and the characteristic function relates both sides of the accounting equation. A different number of dimensions arise on each side of the equation, and a coordinate transformation is applied to have both sides of the equation with two dimensions. This transformation results in a change in the value of claims on assets. Finally, a computation using a probability density function or kernel is proposed to allow approaching the coefficients of the new model. Results show that the accounting equation consists of a series of addition functions to sum up all the monetary units and that a new model with a probability density function can help in the analysis of the assets-claims on assets relationship.
本文的研究目的是基于货币单位的二元概念以及资产和资产索赔权的结构,对会计方程进行分析,并建立一个新的模型。分析使用恒等函数和特征函数以及坐标变换,表明资产-资产债权关系涉及到资产债权价值的变化。恒等函数表示货币单位的对偶概念,特征函数涉及会计等式的两边。在方程的每一边出现不同数量的维度,并且应用坐标变换使方程的两边都具有二维。这种转换导致对资产的索赔权的价值发生变化。最后,提出了一种使用概率密度函数或核的计算方法来接近新模型的系数。结果表明,该会计方程是由一系列相加函数构成的,用于对所有货币单位进行求和,并且一个带有概率密度函数的新模型有助于对资产关系进行资产-债权分析。
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引用次数: 3
Advanced Laser Processes for Energy Production 用于能源生产的先进激光工艺
K. Petridis, Emannuel Kymakis, Emannuel Stratakis
The unique characteristics of the laser pulses as a processing tool in the field of high performance, solution processed and flexible bulk heterojunction organic solar cells (OSCs), as a case study in the research activities of the nanoelectronics & organic electronics research activities, are presented. The proposed techniques is strongly believed open new avenues towards the design and construction of the next generation OSCs.
以纳米电子学和有机电子学的研究为例,介绍了激光脉冲作为一种加工工具在高性能、溶液加工和柔性体异质结有机太阳能电池(OSCs)领域的独特特点。我们坚信,所提出的技术为下一代osc的设计和建造开辟了新的途径。
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引用次数: 0
Fast Extremum Seeking of Model Predictive Control Based on Hammerstein Model 基于哈默斯坦模型的模型预测控制的快速极值搜索
Chagra Wassila, Degachi Hajer, Ksouri Moufida
The use of nonlinear model such as Hammerstein model in MPC will lead necessarily to a nonlinear cost function and so that a nonconvex one. Consequently, the use of a convenient optimization method to solve the resulting nonconvex problem is required. The use of the based gradient method (BGM) requires a higher computation time. Therefore the use of this type of algorithms can't be applied for system with fast dynamic. The Nelder Mead (NM) algorithm is a deterministic optimization method that does not require derivative computation. This method is able to determine the control sequence, solution of the MPC optimization problem with a low computation burden and computation time. A comparative study between the NM algorithm and the BGM based on computation time is established. These two algorithm are implemented on a SISO and a MIMO Hammerstein model.
在 MPC 中使用非线性模型(如 Hammerstein 模型)必然会产生非线性成本函数,从而导致非凸问题。因此,需要使用方便的优化方法来解决由此产生的非凸问题。使用基于梯度法(BGM)需要较长的计算时间。因此,这类算法不适用于快速动态系统。Nelder Mead(NM)算法是一种无需导数计算的确定性优化方法。这种方法能够确定控制顺序,以较低的计算负担和计算时间解决 MPC 优化问题。基于计算时间,对 NM 算法和 BGM 算法进行了比较研究。这两种算法分别在 SISO 和 MIMO Hammerstein 模型上实现。
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引用次数: 1
Optimization of Stochastic Discrete Event Simulation Models Using "AFO" Heuristic 用“AFO”启发式优化随机离散事件模拟模型
Bendato Ilaria, Cassettari Lucia, Fioribello Simone, Giribone Pier Giuseppe
The optimal conditions evaluation in complex stochastic systems modelled through Discrete Event Simulation is often extremely costly in computational terms. Especially when the number of variables involved is high, as in the case of manufacturing systems, the duration of each simulation run can last even several hours of calculation. It therefore becomes very important to use an optimal search method that allows the experimenter to reduce as much as possible the number of function evaluations analysed. With this goal, the Authors compared the performance of a new nature-inspired Heuristic called Attraction Force Optimization (AFO), with those of traditional algorithms, applying these different methodologies to a real industrial case. The authors believe that the obtained results could be of great interest to the scientific community and the AFO heuristic can become a valuable reference for discrete event simulation-based optimization problems.
在离散事件模拟的复杂随机系统中,最优条件的计算通常是非常昂贵的。特别是当涉及的变量数量很高时,例如在制造系统的情况下,每次模拟运行的持续时间甚至可能持续几个小时的计算时间。因此,使用一种最优搜索方法变得非常重要,这种方法允许实验者尽可能减少所分析的函数评估的数量。为了实现这一目标,作者将一种新的启发自然的启发式算法称为吸引力优化(AFO)与传统算法的性能进行了比较,并将这些不同的方法应用于实际的工业案例。作者认为,所得结果对科学界具有重要意义,AFO启发式方法对基于离散事件模拟的优化问题具有参考价值。
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引用次数: 2
Average Domain Size Scales Like Population Size in the Absorbing Configurations of the One-Dimensional Axelrod Model with Three Features and Three States 具有三特征三态的一维Axelrod模型吸收构型中平均域大小与种群大小相似
S. Scarlatos
The Axelrod model for the evolution of cultural domains is a stochastic spatial process, with parameters the number of cultural features f and their states q, that has been studied primarily by numerical simulations in social sciences and statistical physics. It may also be viewed as an asynchronous cellular automaton that exhibits a phase transition or, for a certain range of its parameters, as a distributed consensus (albeit, non-optimal) algorithm. Recently, rigorous results on this model were achieved, which are useful to benchmark simulations or for comparison with the numerical findings. We review these results in one and two dimensions and we also offer a heuristic for an open problem. Namely, our heuristic indicates that consensus is reached in one dimension if f = q = 3, conditional on the existence of an appropriately defined infinite open path in the initial configuration.
Axelrod文化域演化模型是一个随机空间过程,其参数为文化特征的数量f及其状态q,主要通过社会科学和统计物理学的数值模拟进行研究。它也可以被视为一种异步元胞自动机,表现出相变,或者,对于其参数的一定范围,作为一种分布式共识(尽管不是最优)算法。近年来,该模型得到了严谨的结果,可用于基准模拟或与数值结果进行比较。我们在一维和二维上回顾了这些结果,并为一个开放问题提供了一个启发式。即,我们的启发式表明,如果f = q = 3,则在一维上达成一致,条件是初始构型中存在适当定义的无限开放路径。
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引用次数: 0
Optimization of Standard PMDC Motors Used in Automotive Applications for Higher Power Density 汽车应用中用于更高功率密度的标准PMDC电机的优化
Y. L. Karnavas, I. Chasiotis, Emmanouil D. Peponakis
Aim of this work is the development of a competitive alternate design topology (in terms of power density) of a small permanent magnet dc (PMDC) motor found in automotive applications. Initially, a real industrial motor is measured, designed and simulated, while its measurements and the relevant manufacturer data are considered as a benchmark. In turn, through custom developed software, a redesigned configuration is proposed regarding the structural (stator, rotor, magnets) geometry and magnet material. The resulting geometry was obtained through a constrained optimization algorithm having as goal the minimization of the overall volume and it was further verified by commercial finite element method (FEM) analysis software. Also, the new model is compared with the benchmark motor. Last but not least, FEM analysis was used for thermal behavior evaluation. The overall results reveal that the energy density and the performance of the proposed topology were substantially increased, while the cost was remained low.
这项工作的目的是为汽车应用中的小型永磁直流(PMDC)电机开发一种具有竞争力的替代设计拓扑(在功率密度方面)。首先,对一台真实的工业电机进行测量、设计和仿真,同时将其测量值和相关制造商数据作为基准。然后,通过定制开发的软件,提出了关于结构(定子,转子,磁铁)几何形状和磁铁材料的重新设计配置。通过以整体体积最小为目标的约束优化算法得到最终的几何形状,并通过商用有限元分析软件进一步验证。并与基准电机进行了比较。最后,采用有限元分析方法进行热行为评价。总体结果表明,所提出的拓扑结构的能量密度和性能都有了很大的提高,而成本仍然很低。
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引用次数: 5
An Optimizing Algorithm to Minimize the Delay Signal Setting Problem 最小化延迟信号设置问题的优化算法
L. Adacher, A. Gemma
In this work an algorithm for the optimization of signal setting on urban network is proposed. Signal setting are designed based on a given flow in the network. However, the flow in the network is also influenced by the route choice decisions. This paper deals with traffic signal setting with demand assignment. All approaches proposed in literature to address this problem are based on equilibrium assignment, well established in literature as well as in practice. In order to improve the coordination of signal setting with traffic assignment, this paper proposed a traffic control algorithm considering traffic assignment. We proposed the platoon model to simulate the demand assignment and we developed the surrogate method to optimize the signal setting. The surrogate approach is compared with the genetic algorithm, a well known method. The objective function used in this work is a weighted sum of the delays caused by the signalized intersections, and it is calculated by platoon model via simulation. Numerical experiments on real networks are reported.
本文提出了一种城市网络信号设置优化算法。信号设置是根据网络中给定的流来设计的。然而,网络中的流量也受到路径选择决策的影响。本文研究了基于需求分配的交通信号设置问题。所有在文献中提出的解决这个问题的方法都是基于均衡分配,在文献和实践中都得到了很好的确立。为了提高信号设置与交通分配的协调性,提出了一种考虑交通分配的交通控制算法。我们提出了排模型来模拟需求分配,并开发了代理方法来优化信号设置。并将该方法与遗传算法进行了比较。本文所采用的目标函数是由信号交叉口引起的延误的加权和,并通过仿真采用排模型进行计算。报道了在实际网络上的数值实验。
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引用次数: 1
期刊
2016 Third International Conference on Mathematics and Computers in Sciences and in Industry (MCSI)
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