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Lightpath Admission Control and Rerouting in Dynamic Flex-Grid Optical Transport Networks

NETWORKS 2017年第1期69卷 151-163页

作者： de Sousa, Amaro Monteiro, Paulo Lopes, Carlos Borges Univ Aveiro DETI P-3810139 Aveiro Portugal Inst Telecomunicacoes Polo Aveiro P-3810139 Aveiro Portugal

In dynamic flex-grid optical transport networks, Lightpath Admission Control (LAC) is the task of finding a Routing and Spectrum Assignment (RSA) solution for a current lightpath request;otherwise, the request is blocked if there are not enough free available resources. When rerouting is supported, one or more currently established lightpaths can be rerouted and/or assigned with a different spectrum in order to accommodate the current lightpath request. We propose LAC methods based on mixed integer linear programming that provide aRSAsolution for the current request aiming to maximize the acceptance probability of future lightpath requests. When rerouting is supported, we consider that only one currently established lightpath can be rerouted. We compare the proposed methods with the traditional shortest path-based approach through simulation. Without lightpath rerouting, the blocking probability is significantly improved. With lightpath rerouting, the number of rerouting operations is significantly decreased while the blocking probability is marginally improved. Moreover, the blocking fairness between lightpaths with different spectrum widths is improved both with and without lightpath rerouting. In all cases, the CPU times of the mixed integer linear programming approaches are a few seconds, on average. (C) 2016 Wiley Periodicals, Inc.

关键词： optical transport networks routing and spectrum assignment lightpath admission control lightpath rerouting mixed integer linear programming shortest paths

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Content-Based Emotional Semantic Recognition and Retrieval of Male T-Shirt Images

Content-Based Emotional Semantic Recognition and Retrieval o...

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2018 7th international conference on Advanced Materials and Computer Science(ICAMCS 2018)

作者： Zhang Xiaomeng Zhang Haibo Zhang Zekun Information Center Beijing Institute of Fashion Technology Library Beijing Institute of Fashion Technology

Emotional semantics identifying and retrieving of images is one of the hotspots in current *** can provide certain basis for clothing design,clothing wearing and clothing *** a kind of male T-shirt,the recognition and retrieval of emotional semantics of images has also attracted much *** the basis of establishing the relationship between emotional semantic space and low-level features of T-shirt images based on the previous knowledge of clothing field,40 T-shirt images were trained and a machine learning model was established by using support vector machine(SVM).the quantitative mapping relationship between emotional semantic space and low-level features of T-shirt images was established,which could be calculated *** emotional semantics of the image is calculated to realize the emotional semantic recognition of the *** measure algorithm is also used to measure the emotional semantics of images,and image emotional semantic retrieval is *** the experiment of software programming and development,a better recognition and retrieval effect have been achieved,thus verifying the feasibility and effectiveness of emotional semantic analysis of images combined with domain knowledge.

关键词： male T-shirt emotional semantic support vector machine image recognition image retrieval

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the Participatory Ergonomics in the Design of Safety Systems in Complex Work Systems 7th

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7th international conference on Applied Human Factors and Ergonomics (AHFE) / international conference on Social and Occupational Ergonomics

作者： Santoyo, William German Baron Pontificia Univ Javeriana Inst Salud Publ Carrera 7 40-62 Bogota Colombia

ISBN: (纸本)9783319416885;9783319416878

In systems theory, safety is an emergent property of the interactions among the system components, that is, how the work system is obtained without affecting its constituent components or the system as a whole, providing that the expected result operates at the prescribed level of reliability. However, if the system becomes unbalanced due to the undetected failure of one of its components or interactions, that can produce a dysfunction that materializes as an adverse event (accident). therefore, as of the design stage, interactions among the components must be identified as a series of potential dysfunctions and converted into safety layers that contribute to the functional balance of the system. that stage is successful if end users, work safety and health personnel, design engineers, and project managers all participate actively in the group, using participatory ergonomics principles and tools.

关键词： System Systems theory Safety Safety systems Participatory ergonomics Reliability Engineering design Design project

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Assessing the Effectiveness of Decision Making Frameworks in Local Energy Systems 7

Assessing the Effectiveness of Decision Making Frameworks in...

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7th international conference on Modern Power Systems (MPS)

作者： Damavandi, Maziar Yazdani Neyestani, Nilufar Shafie-khan, Miadreza Chicco, Gianfranco Catalao, Joao P. S. Univ Beira Interior C MAST R Fonte do Lameiro P-6201001 Covilha Portugal Univ Porto INESC TEC R Dr Roberto Frias P-4200465 Porto Portugal Univ Porto Fac Engn R Dr Roberto Frias P-4200465 Porto Portugal Politecn Torino Dept Energy Corso Duca Abruzzi 24 I-10129 Turin Italy Univ Lisbon Inst Super Tecn INESC ID Ave Rovisco Pais 1 P-1049001 Lisbon Portugal

ISBN: (纸本)9781509065653

this paper investigates the effectiveness of using different decision-making frameworks in local energy systems (LES) through the assessment of the long-term equilibrium of energy players. For this purpose, the energy system is modelled through two levels of multi-energy player (MEP) and LES, coupled by energy price signals. the conflict between the decision-making of these two levels of players is modelled through a bi-level approach. A mathematical problem with equilibrium constraint is formulated by applying the duality theory, resorting to a linear representation of the constraints. the solution is found by using the CPLEX12 solver. the numerical results show the characteristics of the MEP behaviour in different energy aggregation modes for the LES, with centralised management or uniform pricing. the MEP may find benefits from possible synergies among the LES due to availability of energy carriers with complementary characteristics.

关键词： Distributed energy resources duality theory local energy systems mathematical programming multi-energy player multi-energy system

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A Novel Adaptive Operation of Multi-line Rate Transponder for Dedicated Protection in WDM Network 7

A Novel Adaptive Operation of Multi-line Rate Transponder fo...

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7th international conference on Information Science and Technology (ICIST)

作者： Dao thanh Hai Hanoi Univ Ind Fac Elect Engn Hanoi Vietnam

ISBN: (纸本)9781509054015

As the increasingly large amount of traffic are carried out by WDM networks and the era of information society has been clearly shaped, any network failure would cause massive impact. Operators have been therefore paying growing attention to resilience issues and indeed, guaranteeing survivability has become integral part of network design process. Among protection schemes, dedicated one stands out in terms of efficient recovery speed, ease of operation and thus, being widely deployed in practice. the significant progress in Dexible optics are inspiring new opportunities in dimensioning optical network with dedicated protection. In this context, the paper investigates the use of multi-line rate (MLR) transponder having two bit-rate options by switching the modulation format for dedicated protection purpose. A novel adaptive operation of MLR is proposed based on the protection-aware configuration. the protectionaware scheme exploits MLR transponders at lower bit-rate for working mode and adaptively tunes them to higher rate to handle temporary protection traffic in case of failure. We formulate the routing and Dow aUocation in opaque WDM network design with dedicated protection as mixed integer linear programming and propose two transponder allocation algorithms based on protection-aware operation. the benefits of our new protection proposals compared to traditional approach are quantified over extensive simulations on diverse network topologies and random traffic matrices. Encouraging results are observed with a saving of more than 30% number of transponder and promising cost and power consumption gain could be achieved in a wide range of MLR cost and power consumption assumption.

关键词： Optical Network Multi-line Rate Transponder Network Protection Mixed Integer Linear programming

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How to Teach with LEGO WeDo at Primary School 7th

How to Teach with LEGO WeDo at Primary School

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7th international conference on Robotics in Education (RiE)

作者： Mayerove, Karolina Veselovska, Michaela Comenius Univ Fac Math Phys & Informat Bratislava 84248 Slovakia

ISBN: (纸本)9783319429755;9783319429748

In this paper we present a set of activities with robotics kit Lego WeDo. Activities are designed for ordinary pupils of the third and fourth grade of primary school, and not only for robotic fans. We briefly describe every task of each activity. these eight activities are iteratively confirmed sequence which we recommend to use for familiarization with the elements of the kit and also software. Set of activities and recommendations to them is the result of several iterative verifications and editing, based on observations of teaching according to our materials during informatics lessons. these activities follow the requirements of our national education program and develop several 21st century skills for successful life.

关键词： Activities LEGO WeDo Primary educational Robotics Introduction to programming

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A Node-Based ILP Formulation for the Node-Weighted Dominating Steiner Problem

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NETWORKS 2017年第1期69卷 33-51页

作者： Bley, Andreas Maurer, Olaf Ljubic, Ivana Univ Kassel Dept Math Kassel Germany ESSEC Business Sch Paris Cergy Pontoise France

In this article, we consider the Node-Weighted Dominating Steiner Problem. Given a graph with node weights and a set of terminal nodes, the goal is to find a connected node-induced subgraph of minimum weight, such that each terminal node is contained in or adjacent to some node in the chosen subgraph. the problem arises in applications in the design of telecommunication networks. Integer programming formulations for Steiner problems usually employ a variable for each edge. We introduce a formulation that only uses node variables and that models connectivity through node-cut inequalities, which can be separated in polynomial time. We discuss necessary and sufficient conditions for the model inequalities to define facets and we introduce a class of lifted partition-based inequalities, which can be used to strengthen the linear relaxation. Finally, we show that the polyhedron defined by these inequalities is integral if the underlying graph is a cycle where no two terminals are adjacent. In the general cycle setting, we show that we can get a complete description of the feasible solutions by lifting and projecting into a polytope with no more than twice the dimension. We also show that the well-known indegree equalities are implied by the lifted partition inequalities. Finally, we evaluate the effectiveness of the presented partition inequalities in computational experiments. (C) 2016 Wiley Periodicals, Inc.

关键词： connected dominating set Steiner tree integer programming thin formulation polyhedron facets

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Lightpath Admission Control and Rerouting in Dynamic Flex-Grid Optical Transport Networks

Lightpath Admission Control and Rerouting in Dynamic Flex-Gr...

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7th international Network Optimization conference (INOC)

作者： de Sousa, Amaro Monteiro, Paulo Lopes, Carlos Borges Univ Aveiro DETI P-3810139 Aveiro Portugal Inst Telecomunicacoes Polo Aveiro P-3810139 Aveiro Portugal

关键词： optical transport networks routing and spectrum assignment lightpath admission control lightpath rerouting mixed integer linear programming shortest paths

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7th international Workshop on Statistical Atlases and Computational Models of the Heart Imaging and Modelling Challenges, STACOM 2016 Held in Conjunction with 19th international conference on Medical Image Computing and Computer-Assisted Intervention, MICCAI 2016

7th International Workshop on Statistical Atlases and Comput...

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7th international Workshop on Statistical Atlases and Computational Models of the Heart Imaging and Modelling Challenges, STACOM 2016 Held in Conjunction with 19th international conference on Medical Image Computing and Computer-Assisted Intervention, MICCAI 2016

ISBN: (纸本)9783319527178

the proceedings contain 24 papers. the special focus in this conference is on Statistical Atlases and Computational Models of the Heart Imaging and Modelling Challenges. the topics include: Image-based real-time motion gating of 3D cardiac ultrasound images;novel framework to integrate real-time MR-guided EP data with T1 mapping-based computational heart models;left atrial appendage segmentation based on ranking 2-D segmentation proposals;correction of slice misalignment in multi-breath-hold cardiac MRI scans;segmentation and registration coupling from short-axis cine MRI;application to infarct diagnosis;learning optimal spatial scales for cardiac strain analysis using a motion atlas;3D reconstruction of coronary veins from a single X-ray fluoroscopic image and pre-operative MR;cartan frame analysis of hearts with infarcts;from CMR image to patient-specific simulation and population-based analysis;segmentation and tracking of myocardial boundaries using dynamic programming;registration with adjacent anatomical structures for cardiac resynchronization therapy guidance;4D automatic centre detection of the right and left ventricles from cine short-axis MRI;left-ventricle basal region constrained parametric mapping to unitary domain;myocardial scar quantification using SLIC supervoxels - parcellation based on tissue characteristic strains;segmentation challenge on the quantification of left atrial wall thickness;left atrial wall segmentation using clinically correlated metrics and automatic left atrial wall segmentation from contrast-enhanced CT angiography images.

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Proceedings of SPIE - the international Society for Optical Engineering

Proceedings of SPIE - The International Society for Optical ...

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7th international conference on Electronics and Information Engineering, ICEIE 2016

ISBN: (纸本)9781510610804

the proceedings contain 166 papers. the topics discussed include: agreement assessment in size measurement of hepatic metastases;structural strength analysis and fatigue life prediction of traction converter box in high-speed emu;avionics equipment failure prediction based on genetic programming and grey model;fault mechanism analysis and simulation for continuity resistance test of electrical components in aircraft engine;modal and harmonic response analysis of cutter head of juice extractor;colorimetric characterization of LCD based on constrained least squares;research on the displacement control method of asynchronous modular contactor;and numerical analysis of interface debonding detection in bonded repair with Rayleigh waves.

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