Community mining with graph filters for correlation matrices

Borgnat, Pierre, Goncalves, Paulo, Tremblay, Nicolas, Willaime-Angonin, Nathanael | Signals, Systems and Computers, 2015 49th Asilomar Conference on (v.2015 / no.11 / pp.856-860 / 2015)

Communities are an important type of structure in networks. Graph filters, such as wavelet filterbanks, have been used to detect such communities as groups of nodes more

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Communities are an important type of structure in networks. Graph filters, such as wavelet filterbanks, have been used to detect such communities as groups of nodes more densely connected together than with the outsiders. When dealing with times series, it is possible to build a relational network based on the correlation matrix. However, in such a network, weights assigned to each edge have different properties than those of usual adjacency matrices. As a result, classical community detection methods based on modularity optimization are not consistent and the modularity needs to be redefined to take into account the structure of the correlation from random matrix theory. Here, we address how to detect communities from correlation matrices, by filtering global modes and random parts using properties that are specific to the distribution of correlation eigenvalues. Based on a Louvain approach, an algorithm to detect multiscale communities is also developed, which yields a weighted hierarchy of communities. The implementation of the method using graph filters is also discussed.

The trade-off between technology deployment and enviro-economic benefits in smart buildings

Louis, Jean-Nicolas, Pongracz, Eva, Leiviska, Kauko | European Energy Market (EEM), 2015 12th International Conference on the (v.2015 / no.5 / pp.1-5 / 2015)

Smart grids are meant to reach multiple goals such as leveling the electricity demand profile, reducing electricity consumption and increasing the energy efficiency of th

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Smart grids are meant to reach multiple goals such as leveling the electricity demand profile, reducing electricity consumption and increasing the energy efficiency of the electrical grid. Smart buildings play an important role in achieving these goals. With an increased number of measuring and controlling tools, new problems also arise, such as their economic and environmental impacts, juxtaposed to the levels of savings achieved by them. This research investigated the impact of home automation on electricity consumption, related CO 2 emissions and costs. A smart building model with its appliances and different number of inhabitants was used along with eight electricity contracts and four different technology systems deployed. The results showed that a fully deployed automation system may be counterproductive, as the electricity need of the system may exceed the savings achieved by it. Therefore, a careful selection of the appliances to be used should be performed.

Interaction modeling in the grasping and manipulation of 3D deformable objects

Zaidi, Lazher, Bouzgarrou, Belhassen-Chedli, Sabourin, Laurent, Mezouar, Youcef | Advanced Robotics (ICAR), 2015 International Conference on (v.2015 / no.7 / pp.504-509 / 2015)

Robotic grasping has been extensively studied in the last two decades. Most of the research in this field has been dedicated to rigid body grasping, and only a few studie

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Robotic grasping has been extensively studied in the last two decades. Most of the research in this field has been dedicated to rigid body grasping, and only a few studies have considered the case of deformable objects. Nevertheless, the robotized grasping of deformable objects has many potential applications in various areas, including bio-medical processing, the food processing industry, service robotics, robotized surgery, etc. This paper discusses the problem of modeling interactions between a multi-fingered hand and a 3D deformable object for robotic grasping and manipulation tasks. Our work presents a new strategy for modeling contact interactions in order to define the relationship between applied forces and object deformations. The mechanical behavior of the deformable object is modeled using a non-linear anisotropic mass-spring system. Contact forces are generated according to the relative positions and velocities between the fingertips and the boundary surface facets of the deformable object mesh. This approach allows reducing the number of nodes while ensuring accurate contact modeling.

Systematic review of literature: Educational games about electric energy consumption

Nishida, Adriana Keiko, Braga, Juliana Cristina | Frontiers in Education Conference (FIE), 2015. 32614 2015. IEEE (v.2015 / no.10 / pp.1-8 / 2015)

This paper presents the process and the result of a systematic literature review about educational games in which the main theme is electricity consumption, executed from

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This paper presents the process and the result of a systematic literature review about educational games in which the main theme is electricity consumption, executed from January to March 2014. The systematic review is characterized by the use of a method that aims to answer the questions of the researcher with rigor in the search, making trends and biases of the researcher interfere as little as possible on the results. The research questions raised were: 1) Are there educational games about electric power consumption? 2) How were these games used? The theme choice was made as a result of the environmental issues assigned to it and the consequences that consumption can generate. The result of the work, obtained from a survey in the ACM Digital Library, Elsevier (Science Direct) and Springer scientific research bases, revealed the existence of seven papers, which responded the questions made. The results indicate a lack of papers in which use approaches of the games are reported - highlighting the need for further investigation and share. It is believed that this work contributes to the academic community by presenting a list of games and their uses, and the knowledge from this type of research serves as an incentive for new games and different approaches to be designed and created.

Corporate Sustainability and Business Excellence

Rocha-Lona, Luis, Garza-Reyes, Jose Arturo, Lim, Ming K., Kumar, Vikas | Industrial Engineering and Operations Management (IEOM), 2015 International Conference on (v.2015 / no.3 / pp.1-7 / 2015)

This paper discusses the suitability for Business Excellence Models (BEMs) to include Corporate Sustainability on business model criteria. The conceptual paper brings dis

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This paper discusses the suitability for Business Excellence Models (BEMs) to include Corporate Sustainability on business model criteria. The conceptual paper brings discussion of what sort of measures are required to fit organizations' needs in measuring performance in terms of economic, social, and environment bottom-lines. A literature review has been conducted for BEMs that includes the EFQM Excellence Model, Baldrige Model, ISO standards, GRI, and explores its integration with Corporate Sustainability. Then, an analysis is deployed in order to identify common frameworks and metrics used for assessing sustainability in the three dimensions of bottom-lines. Despite there are better frameworks to assess corporate sustainability, Business Excellence Models (BEMs) were found to be suitable performance measurement frameworks to integrate Corporate Sustainability; however, business criteria remain unclear and ambiguous, not addressing clearly how to measure Corporate Sustainability Performance. The research provides a general approach to explore suitability of BEMs to include corporate sustainability and it is limited in scope as some organizations' have specific maturity levels in both: deploying BEMs and corporate sustainability. Further research include the suitability of current economic systems to reach corporate sustainability, and the use of lean-six sigma methods to support corporate sustainability at strategic and operational levels.

Analysis of coaxial magnetic gears

Gentile, G., Ometto, A., Rotondale, A., Rotondale, N. | Clean Electrical Power (ICCEP), 2015 International Conference on (v.2015 / no.6 / pp.472-478 / 2015)

The behavior of a magnetic gear which employs rare earth magnets is analyzed; the magnetic gear allows the power to be transmitted by transforming speed and torque. An an

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The behavior of a magnetic gear which employs rare earth magnets is analyzed; the magnetic gear allows the power to be transmitted by transforming speed and torque. An analytical simplified approach for the analysis of the considered magnetic gear is used in this paper. The approach can be suitable for design aims. The mathematical model is one-dimensional: only the variation of electromagnetic quantities as function of angular position is considered, the permanent magnets are modeled by means of constant currents located at their edges. The resulting magnetomotive force generated by two rotors is modulated by the distribution of the variable permeance due to the difference of the magnetic permeability between the air of the slots and the magnetic material of the pole-pieces. The analytical results are verified by means of a finite element method.

Big data: Measuring how information technology can improve the economic growth and better life

Nouinou, Soumaya, Razafimampianina, Rindra M., Regragui, Boubker, Doukkali, Abdelaziz S. | Information and Communication Technologies (WICT), 2015 5th World Congress on (v.2015 / no.12 / pp.152-159 / 2015)

Today data are equivalent of oil or gold, but Succeeding with big data requires more than just data. Data-based value creation requires the identification of a framework

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Today data are equivalent of oil or gold, but Succeeding with big data requires more than just data. Data-based value creation requires the identification of a framework from which predictions can be deducted and decisions can be made. Lot of index has been developed to measure the state of development of countries whether economic growth, ICT penetration or Human development. The purpose of the measuring was to assess policy implications and economic growth around the globe as well as share best practices. In this paper we are going to compare the most wildly tools of measurement of economic competiveness, Network readiness, Human development and world press freedom. Those four domains are judged to be the pillars of well-being and good live of a Human. In the second part of this paper, we examine the hypothesis that ICT penetration has positive effects on economic growth, well-being and a better life of a Human. We use the system Generalized Method of Moment for dynamic panel data analysis to extract the causal link between ICT penetration and growth.

Effect of deposition time on structural, optical and morphological properties of facing-target sputtered TiO2 thin film

Hossain, M. F., Paul, Puspita, Takahashi, T. | Electrical amp; Electronic Engineering (ICEEE), 2015 International Conference on (v.2015 / no.11 / pp.241-244 / 2015)

The aim of this work is to deposit nanocrystalline TiO 2 films by DC reactive facing-target sputtering (FTS) technique. The TiO 2 films have been deposited in Fluorin

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The aim of this work is to deposit nanocrystalline TiO 2 films by DC reactive facing-target sputtering (FTS) technique. The TiO 2 films have been deposited in Fluorine doped tin-oxide (FTO) glass substrate by FTS with sputtering pressure of 2.0 Pa, and Ar/O 2 gas ratio of 7:3. The main attraction of this paper is to correlate the structural, optical and morphological properties of these prepared TiO 2 film with variation of deposition time (like 2, 4 and 12 hrs). The thickness of TiO 2 film increases with the increase of deposition time. The correlation between the thickness variance and the structural, optical and morphological properties of TiO 2 thin films has been investigated in details. From the results, it is cleared that the crystallinity, grain size and surface roughness enhance but cluster size reduces with the increase of deposition time. These prepared films have chanced to apply directly for dye-sensitized solar cell, photoelectrochemical cell and water splitting applications.

Treatment of polytetrafluoroethylene films by atmospheric AR three-dielectric layers barrier discharge plasma

Li, X., Li, J., Dong, P., Zhang, L. W., Long, J. D., Xie, Y. T. | Plasma Sciences (ICOPS), 2015 IEEE International Conference on (v.2015 / no.5 / pp.1-1 / 2015)

Atmospheric pressure dielectric barrier discharge(DBD) plasma surface treatment is a useful means to modify the properties of polytetrafluoroethylene(PTFE) films, such as

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Atmospheric pressure dielectric barrier discharge(DBD) plasma surface treatment is a useful means to modify the properties of polytetrafluoroethylene(PTFE) films, such as hydrophily, adhensive ability. A generator with more dielectric layers will affect the plasma characteristics, and then affects the treatment effects on PTFE films. To investigate this influence, some experiments were carried out with a three-dielectric-layer generator induced by a sub-microsecond pulsed power, whose amplitude is about 120kV, pulse width 230ns, rise time 120ns and frequency 130Hz~1kHz. And The plasma was obtained in atmospheric pressure Argon gas. The Surface properties are investigated by different conditions, including the applied voltage, current and frequency and compared to the results from two-dielectric-layer discharge plasma. The surface water contact angle changed from 118 degree to about 85 degree on more strict conditions. The most important is that the treatment surface area is increased one time. It indicates that this means is effective and potential.

Co-simulation for a flexible four-bar mechanism

Lee, Fu-Shin, Lin, Chen-I, Chen, Zhi-Yu | Advanced Robotics and Intelligent Systems (ARIS), 2015 International Conference on (v.2015 / no.5 / pp.1-5 / 2015)

The main objective of this study is to establish a virtual prototyping model of a flexible four-bar mechanism and perform co-simulations using both mechanism model constr

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The main objective of this study is to establish a virtual prototyping model of a flexible four-bar mechanism and perform co-simulations using both mechanism model construction and control strategy development tools for the structure. Taking the four-bar mechanism as an example, a co-simulation control approach is introduced to study multi-body flexible dynamics. Lagrange approach is first implemented to study the dynamics model of a rigid four-bar mechanism, and co-simulations are conducted to investigate the responses of its flexible form made of various materials. Then, controller strategies are exercised to demand the four-bar mechanism to response as requested. The study verifies the feasibility to control of flexible multi-body mechanisms' traces.

Value Chain Creation through Digital Innovation: The Ebb and Flow of Communality and Connectivity in a Networked Interorganizational System

Guth, Kristen, Poole, M. Scott | System Sciences (HICSS), 2015 48th Hawaii International Conference on (v.2015 / no.1 / pp.4191-4200 / 20151530-1605)

Communality and connectivity are types of public goods offered in online spaces. As theoretical concepts, they provide design insight for the creation and understanding o

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Communality and connectivity are types of public goods offered in online spaces. As theoretical concepts, they provide design insight for the creation and understanding of interorganizational collaboration tools in multisided networks and value chains. In this paper, we present an extension of communality and connectivity that enables an examination of how organizations create value with networked organization-to-organization (O2O) systems. We use the framework as a lens for a case study involving the historical development of an online technology and its organization (MarketMaker) over 16 years that reframed the backbone of the agricultural market in the U.S. From a supply chain to a network. MarketMaker successfully interwove consumers, farmers, universities, government agencies, and states based on its innovation to connect stakeholders in novel ways around information and communication. As a central system in reconfiguring the value chain, MarketMaker provided services to the food industry not previously enabled. A number of important lessons learned about effective use of communality and connectivity are discussed.

A method of latent semantic information mining for trajectory data

Lyu-Chao Liao, Xin-Hua Jiang, Fu-Min Zou, Pei-Wei Tsai, Yan-Ling Deng | Intelligent Information Hiding and Multimedia Signal Processing (IIH-MSP), 2015 International Conference on (v.2015 / no.9 / pp.353-353 / 2015)

To explore the potential characteristics of trajectory data, this paper presents a method of latent semantic information mining for trajectory data (T-LSD. We aim to solv

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To explore the potential characteristics of trajectory data, this paper presents a method of latent semantic information mining for trajectory data (T-LSD. We aim to solve the problem of structuring the spatio-temporal data and discovering potential patterns from the trajectory data. First, a vector space model is proposed for trajectory data. Then, by the singular value decomposition of the trajectory matrix, we extract its low-dimensional semantic subspace to further mining its latent semantic information. Finally, we evaluate this research method with a mass of practical trajectory data, which has a total mileage of more than three million kilometers. The experimental results showed that this approach can be employed to analyze the potential characteristics of road network with trajectory data, and can be further used to uncover the driving behavior patterns.

Microwave treatment technology for oil contaminated drill cuttings

Zhang Hui, Wei Haoyin, Yang Qi, Xiao Jinghui, Liu Youchun | Vacuum Electronics Conference (IVEC), 2015 IEEE International (v.2015 / no.4 / pp.1-2 / 2015)

This paper introduces the microwave treatment method for the oil contaminated drill cuttings. The method could lead the oil content to reduce to less than 1%, and the oil

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This paper introduces the microwave treatment method for the oil contaminated drill cuttings. The method could lead the oil content to reduce to less than 1%, and the oil recovery rate could reach 51.53%. A large amount of oil and water mixed vapor are separated from the cuttings when they are heated to 125 #x00B0;C. Therefore, the oil in the cuttings is carried over by water steam and removed at lower temperatures.

Pellet injection technology and applications on ITER

Baylor, L. R., Combs, S. K., Duckworth, R. C., Lyttle, M. S., Meitner, S. J., Rasmussen, D. A., Maruyama, S. | Fusion Engineering (SOFE), 2015 IEEE 26th Symposium on (v.2015 / no.5 / pp.1-8 / 2015)

Cryogenic pellet injectors for use in fusion research have been under development at Oak Ridge National Laboratory for over 30 years. The original application of the tech

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Cryogenic pellet injectors for use in fusion research have been under development at Oak Ridge National Laboratory for over 30 years. The original application of the technology was to add fuel to magnetically confined plasmas to replace D-T ions that are consumed in the fusion reactions or lost due to transport out of the confining magnetic fields. This application is still the primary use for pellet injection and is planned for implementation on the ITER burning plasma experiment. More recently there have been additional applications for the injection of cryogenic pellets in the areas of disruption and edge localized mode mitigation. Injector systems for these applications are also being implemented for ITER, which require refinements of the technology for production and shattering of very large pellets and production of very small high repetition rate pellets, respectively. Details of these applications and injection system designs are presented.

Injection/bunching section design of a Sub-millimetric klystron

Leggieri, Alberto, Passi, Davide, Di Paolo, Franco, Saggio, Giovanni, Gozzi, Benedetto | Nanotechnology (IEEE-NANO) , 2015 IEEE 15th International Conference on (v.2015 / no.7 / pp.514-517 / 2015)

The design of the injection and bunching section for a Sub-millimetric klystron is described in this paper. A Carbon nanotube cold cathode is employed to produce the requ

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The design of the injection and bunching section for a Sub-millimetric klystron is described in this paper. A Carbon nanotube cold cathode is employed to produce the required beam current. An opportune shape of the device has been chosen to allow for the micro-fabrication, while ensuring the correct Buncher excitation. In this range of critical dimensions, multiple physics influencing factors, due to the heating effects and power dissipations over the beam dynamics, may alter the desired behavior of the device. A multiphysics design approach has been employed to ensure the future correct operation selecting appropriate materials and shapes. Several strategies have been adopted to obtain a simple but reliable model.

Simulation study on a 3-dB quadrature coupled structure

Patel, Sohin R., Montiel, Claudio M. | Applied Computational Electromagnetics (ACES), 2015 31st International Review of Progress in (v.2015 / no.3 / pp.1-2 / 2015)

The circuit presented here is a variation of the classic unfolded Lange coupler. The structure is to provide equal power output, while maintaining a 90 #x00B0; phase diff

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The circuit presented here is a variation of the classic unfolded Lange coupler. The structure is to provide equal power output, while maintaining a 90 #x00B0; phase difference, for as wide a frequency range as possible, between the coupled and through ports. This coupler has the advantage of using coplanar waveguide and microstrip transmission lines, while avoiding the use of air bridges as the traditional Lange coupler does. The proposed coupler instead uses a defected ground plane, vias, and short PCB traces to connect the interdigitated structure. The circuit is designed on a single-layer substrate and can easily be manufactured with PCB processes. For low-cost fabrication, FR-4 substrate, with one-ounce copper, is proposed. The Sonnet #x2122; simulation results show that the structure can provide a tight coupling factor of 3.6 dB when dielectric and conductor losses are included. The circuit is able to maintain a phase difference between 86 #x00B0; and 100 #x00B0; from 0.1-2 GHz.

Decomposition of energy function and hierarchical transient stability diagnosis for power networks

Kojima, Chiaki, Susuki, Yoshihiko, Tsumura, Koji, Hara, Shinji | Decision and Control (CDC), 2015 IEEE 54th Annual Conference on (v.2015 / no.12 / pp.3266-3271 / 2015)

In this paper, we consider a power network with multiple synchronous machines (generators and motors) exhibiting multiple collective swing motions and aim at hierarchical

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In this paper, we consider a power network with multiple synchronous machines (generators and motors) exhibiting multiple collective swing motions and aim at hierarchical diagnosis of transient stability in the network. We decompose an energy function of the entire network into energy functions of the collective motion of coherently clustered machines and of the machines' motion relative to the collective motions as a main result. This decomposition enables us to extract distinctive behaviors in swing dynamics, and to consider hierarchical stability diagnosis. We also derive a hierarchical sufficient condition of transient stability of the entire network in terms of these energy functions. Finally, we study the diagnosis with a numerical example of a simple power network model.

Investigation of native oxide removing from HCPA ALD grown GaN thin films surface utilizing HF solutions

Deminskyi, Petro, Haider, Ali, Biyikli, Necmi, Ovsianitsky, Alexander, Tsymbalenko, Alexander, Kotov, Dmitry, Matkivskyi, Vladyslav, Liakhova, Nata, Osinsky, Vladimir | Electronics and Nanotechnology (ELNANO), 2016 IEEE 36th International Conference on (v.2016 / no.4 / pp.128-131 / 2016)

The paper consider oxygen contamination of HCPA ALD grown GaN films under an air conditioning and during different time duration. High resolution XPS analysis of HCPA ALD

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The paper consider oxygen contamination of HCPA ALD grown GaN films under an air conditioning and during different time duration. High resolution XPS analysis of HCPA ALD grown GaN films after diluted 1:10 HF(41 %): H 2 O and undiluted HF (41 %) influence on oxygen impurities was investigated. Lesser oxygen impurities have been observed. Better resistivity to oxygen atoms of GaN thin films after diluted HF solution treatment was achieved compared to undiluted HF treatment and without treatment.

Community Detection Based on Structure and Content: A Content Propagation Perspective

Liyuan Liu, Linli Xu, Zhen Wangy, Enhong Chen | Data Mining (ICDM), 2015 IEEE International Conference on (v.2015 / no.11 / pp.271-280 / 20151550-4786)

With the recent advances in information networks, the problem of identifying group structure or communities has received a significant amount of attention. Most of the ex

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With the recent advances in information networks, the problem of identifying group structure or communities has received a significant amount of attention. Most of the existing principles of community detection or clustering mainly focus on either the topological structure of a network or the node attributes separately, while both of the two aspects provide valuable information to characterize the nature of communities. In this paper we combine the topological structure of a network as well as the content information of nodes in the task of detecting communities in information networks. Specifically, we treat a network as a dynamic system and consider its community structure as a consequence of interactions among nodes. To model the interactions we introduce the principle of content propagation and integrate the aspects of structure and content in a network naturally. We further describe the interactions among nodes in two different ways, including a linear model to approximate influence propagation, and modeling the interactions directly with random walk. Based on interaction modeling, the nature of communities is described by analyzing the stable status of the dynamic system. Extensive experimental results on benchmark datasets demonstrate the superiority of the proposed framework over the state of the art.

Simulation-based electrical safety training

Halpin, Mark, Halpin, Regina, Curtis, Patricia | Environment and Electrical Engineering (EEEIC), 2015 IEEE 15th International Conference on (v.2015 / no.6 / pp.1137-1142 / 2015)

Electrical safety has rapidly risen in prominence in industrial applications due to increased awareness of hazards and risks. There are numerous occupational health and s

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Electrical safety has rapidly risen in prominence in industrial applications due to increased awareness of hazards and risks. There are numerous occupational health and safety organizations around the world that now mandate practices and procedures to maximize electrical safety in the workplace. Training workers to meet these requirements typically follows the standard methods based on seminars and short courses which have been widely used for many years. Maximizing electrical safety, however, cannot be achieved by simply memorizing facts or procedures taught in this environment. The critical aspect of electrical safety lies in the actions of the worker in the workplace-what people do in certain situations when given particular information is based on their higher-level thought process and their sequential decisions and actions. It is not possible to fully train workers in this skillset in advance, and the needs in this area are normally addressed on the job by direct observation and personal interaction. In this paper, a simulation-based electrical safety training module is described that allows the participant to move through a simulated environment while making observations and decisions and taking actions. The ability of the participant to recognize key facts and take appropriate actions when faced with simulated electrical safety scenarios can be scored and evaluated in the same manner as a typical computer game with the total score based on the accumulated choices of the participant. A score threshold can then be used to indicate the level to which the participant has mastered the training scenarios. Determining such a total score is exemplary of the necessary changes in assessment required when using virtual learning environments for training purposes.