- Simulation analysis of a real small production process
- Haffner, Oto, Kralova, Zdenka | Carpathian Control Conference (ICCC), 2015 16th International (v.2015 / no.5 / pp.153-158 / 2015)
- The paper presents a case study on simulation analysis of a real process aiming to improve its performance. The final products are the handmade goods belonged to the cate
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The paper presents a case study on simulation analysis of a real process aiming to improve its performance. The final products are the handmade goods belonged to the category of children's toys. The objects of the analysis are organizational and technological changes, enabling to expand the actual process capacities. Simulation software WITNESS is used for modelling and analysis.
- Analysis of Grounding for Pulse Forming Net
- Long, Xinlin, Lu, Junyong, Zhang, Xiao, Li, Chao | Intelligent Systems Design and Engineering Applications (ISDEA), 2015 Sixth International Conference on (v.2015 / no.8 / pp.126-129 / 2015)
- High-powered pulsed powers supply for shipboard launching device in parallel, every unit can discharge hundreds of thousands of amperes current to the launching device, t
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High-powered pulsed powers supply for shipboard launching device in parallel, every unit can discharge hundreds of thousands of amperes current to the launching device, to satisfy the demand of launching, power units discharge in designed sequence. In order to generate hundreds of thousands of amperes current, power voltage must reach ten thousand volt. So the negative pole of power must be grounded to keep the system safe. Analysis results show that current through grounding connection will be generated when multiple points grounding is adopt, this paper calculates out the current through grounding connection by simulation, at last, this paper put forward that single point grounding is suitable for the pulse forming net system, which can eliminate the current through the grounding connection.
- A decomposition approach to colored traveling salesman problems
- Li, Jun, Dai, Xing, Liu, Huaxuan, Zhou, MengChu | Automation Science and Engineering (CASE), 2015 IEEE International Conference on (v.2015 / no.8 / pp.51-56 / 2015)
- As a well-known combinatorial optimization problem, multiple traveling salesman problem (MTSP) fails to characterize some application problems where cities may have diffe
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As a well-known combinatorial optimization problem, multiple traveling salesman problem (MTSP) fails to characterize some application problems where cities may have different accessibility for some but not necessarily all salesmen. This work proposes a colored traveling salesman problem (CTSP) in which a city has one to multiple colors allowing any salesman with the same color to visit. It presents a decomposition approach that converts CTSP into a combination of several individual traveling salesman problems (TSPs) and one MTSP for an important class of CTSP. To solve the transformed one, this work proposes a modified greedy algorithm allowing multi-colored city assignment during city search and adopts the formerly presented simulated annealing genetic algorithm. A dual-bridge waterjet cutting example is utilized to compare the presented decomposition approach and direct one. The results show that the former can achieve a better solution than the latter if the cities of same color(s) are clumped.
- Measured Dielectric permittivity of chlorinated drinking water in the microwave frequency range
- Abdelgwad, Ahmad H., Said, Tarek M. | Microwave Symposium (MMS), 2015 IEEE 15th Mediterranean (v.2015 / no.11 / pp.1-4 / 2015)
- The safety of drinking water is directly dependent on the chlorine content and therefore the study gains its importance. Chlorinated water is safe to drink as long as the
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The safety of drinking water is directly dependent on the chlorine content and therefore the study gains its importance. Chlorinated water is safe to drink as long as the levels of chlorine comply with the water quality factors. The purpose of this research is to study the effect of chlorine concentration on the complex dielectric permittivity of water. The measurement of the complex permittivity of chlorinated drinking water is reported in the frequency range 500 MHz - 4 GHz using open-ended coaxial probe technique. Measurements are carried out using a dielectric assessment system associated with an automatic network analyzer and a dielectric probe connected to a computer. The experimental set up is described and the procedure followed to obtain an effective permittivity data is outlined. These measurements are, to the best of the author's knowledge, the first of its kind to be published. The dielectric constant and loss factor for all measured samples are analyzed and the effect of the chlorine concentration is studied. The results indicate that chlorine content has a significant effect on both dielectric constant and the loss factor. Results of this work show that microwave sensing is an effective methodology for monitoring water quality and possible contamination.
- Simulation and analysis of a bank queuing system
- Mutingi, M., Mapfaira, H., Moakofi, N. P. K., Moeng, S. A., Mbohwa, C. | Industrial Engineering and Operations Management (IEOM), 2015 International Conference on (v.2015 / no.3 / pp.1-6 / 2015)
- Improving service quality in the banking sector is essential for customer satisfaction. Decision makers are especially concerned about the time that customers wait before
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Improving service quality in the banking sector is essential for customer satisfaction. Decision makers are especially concerned about the time that customers wait before receiving their service. To stay competitive, decision makers have to continuously improve their service quality, measured in terms of suitable performance indicators. In this study, we focus on modelling and analysis of bank queuing systems. The study comprises three phases: (i) identify suitable performance indicators that influence customer perception with regards to service quality, (ii) simulate the behavioral performance of bank queuing systems, and (ii) evaluate and improve the service quality of the system. An illustrative case study is presented, showing the utility of proposed simulation approach.
- Treatment of Persistent Organic Pollutants in Wastewater by Nano-Seconds Pulsed Discharge Plasma
- Kodama, Shintaro, Matsumoto, Satoru, Douyan Wang, Namihira, Takao, Akiyama, Hidenori | Advanced Applied Informatics (IIAI-AAI), 2015 IIAI 4th International Congress on (v.2015 / no.7 / pp.695-698 / 2015)
- Persistent organic pollutants (POPs) are bioaccumulative and environmentally persistent substances. POPs cannot be decomposed by conventional water treatments. For this r
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Persistent organic pollutants (POPs) are bioaccumulative and environmentally persistent substances. POPs cannot be decomposed by conventional water treatments. For this reason, a new treatment method is required. Nano-seconds (ns) pulsed discharges enable higher energy efficiencies of plasma processing. Its advantages have been already performed at gas phase treatment such as NOx treatment and ozone generation. On the other hand, there are few reports on the water treatment using ns discharge plasmas. In this study, we tried to decompose the organic pollutants using ns method by spraying wastewater into gas phase plasma region. The discharge reactor was coaxial cylindrical geometry, and the treated wastewater was circulated and continuously treated in the reactor. The time course of pH and concentration of total organic carbon (TOC) in the wastewater were evaluated at different applied voltages. From the results, the decrease of TOC in the wastewater was observed together with pH at ns discharge treatment. The experimental results showed that the ns pulsed discharge plasma can decompose TOC in the wastewater and has discoloration effect.
- Identification and monitoring inter-area oscillations in power systems
- Calderon-Guizar, Jorge G., Ramirez-Gonzalez, M., Castellanos-Bustamante, R. | PowerTech, 2015 IEEE Eindhoven (v.2015 / no.6 / pp.1-6 / 2015)
- Inter-area oscillations are inherent to power systems. This type of oscillations is characterized by a group of generators in one are of the system oscillating against ot
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Inter-area oscillations are inherent to power systems. This type of oscillations is characterized by a group of generators in one are of the system oscillating against other group located in another area. Since power systems are subjected to a wide range of disturbances, the damping associated with those oscillations may be drastically modified and the system security may be compromised. Thus, identifying and monitoring the critical inter-area modes is of significant concern during the power system operation. This paper reports on the identification and monitoring critical inter-area modes, using modal analysis together with the Prony's method.
- Double-pulse injection seeding of a terahertz quantum cascade laser
- Markmann, Sergej, Nong, Hanond, Pal, Shovon, Hekmat, Negar, Scholz, Sven, Kukharchyk, Nadezhda, Ludwig, Arne, Dhillon, Sukhdeep, Tignon, Jerome, Marcadet, Xavier, Bock, Claudia, Kunze, Ulrich, Wieck, Andreas D., Jukam, Nathan | Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2015 40th International Conference on (v.2015 / no.8 / pp.1-2 / 2015)
- Double-pulse injection seeding is used to modify the spectral emission of a terahertz quantum cascade laser (THz QCL). Two broad-band THz pulses delayed in time imprint a
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Double-pulse injection seeding is used to modify the spectral emission of a terahertz quantum cascade laser (THz QCL). Two broad-band THz pulses delayed in time imprint a modulation on the single THz pulse spectrum. The resulting seed enables modification of the QCL emission spectrum, even though, the spectral bandwidth of each THz pulse is much broader than the QCL gain bandwidth. For a proper time delay between the pulses, the seeded THz QCL emission can even be switched from a multimode to a single mode regime.
- Community-Based Bus System as Routing Backbone for Vehicular Ad Hoc Networks
- Fusang Zhang, Hai Liu, Yiu-Wing Leung, Xiaowen Chu, Beihong Jin | Distributed Computing Systems (ICDCS), 2015 IEEE 35th International Conference on (v.2015 / no.6 / pp.73-82 / 20151063-6927)
- Low delivery latency and high delivery ratio are two key goals in the design of routing schemes in Vehicular Ad Hoc Networks (VANETs). The existing routing schemes utiliz
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Low delivery latency and high delivery ratio are two key goals in the design of routing schemes in Vehicular Ad Hoc Networks (VANETs). The existing routing schemes utilize real-time information (e.g., Geographical position and vehicle density) and historical information (e.g., Contacts of vehicles), which usually suffer from a long delivery latency and a low delivery ratio. Inspired by the unique features of bus systems such as wide coverage, fixed routes and regular service, we propose to use the bus systems as routing backbones of VANETs. In this work, we present a Community-based Bus System (CBS) which consists of two components: a community-based backbone and a routing scheme over the backbone. We collect real traces of 2515 buses in Beijing and build a community-based backbone by applying community detection techniques in the Beijing bus system. A two-level routing scheme is proposed to operate over the backbone. The proposed routing scheme performs sequentially in the inter-community level and the intra-community level, and is able to support message delivery to both mobile vehicles and specific locations/areas. Extensive experiments are conducted on the real trace data of the Beijing bus system and the results show that CBS can significantly lower the delivery latency and improve the delivery ratio. CBS is applicable to any bus-based VANETs.
- Cognitive neural network modeling of the trajectory of global technical and economic development
- Gorbachev, Sergey, Syryamkin, Vladimir | Cognitive Computing and Information Processing (CCIP), 2015 International Conference on (v.2015 / no.3 / pp.1-6 / 2015)
- The article considers the problem of measuring the level and rate of technical and economic development of countries in terms of technological change. Advantages of cogni
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The article considers the problem of measuring the level and rate of technical and economic development of countries in terms of technological change. Advantages of cognitive neural network approach to monitoring and quality analysis for integrating into a single model of economic, scientific-technological, innovative and other quantitative and qualitative components of growth, not amenable to traditional statistical analysis, with calculation of the forecast evaluation time of the reference trajectory of technical and economic development. Presents the results of the calculations. To improve the accuracy of the model trajectories are encouraged to use self-organizing Kohonen maps.
- Simulation of surface-to-air missile units: Cluster design
- Farlik, Jan | Military Technologies (ICMT), 2015 International Conference on (v.2015 / no.5 / pp.1-6 / 2015)
- Today military simulations state of the art systems require the high level of implemented reality into the models. These models of military equipment should be realistic
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Today military simulations state of the art systems require the high level of implemented reality into the models. These models of military equipment should be realistic not just in case of visualization but also in case of behavior. Surface-to-air missile systems are very sophisticated systems that comprise capabilities of platform itself, its sensors, weapon system (missile), capability to act together with other similar entities at the battlefield, etc. This article deals with certain aspects of surface-to-air missile systems modeling and simulation - modelling of cluster design.
- Near-field injection at die level
- Boyer, A., Vrignon, B., Shepherd, J. | Electromagnetic Compatibility (APEMC), 2015 Asia-Pacific Symposium on (v.2015 / no.5 / pp.478-481 / 2015)
- Near-field injection is a promising method in order to induce local faults in integrated circuits. This paper aims at proposing a model of the coupling between the inject
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Near-field injection is a promising method in order to induce local faults in integrated circuits. This paper aims at proposing a model of the coupling between the injection probe and the circuit under test. This study relies on measurements performed on a test chip by on-chip voltage sensors.
- A non-linear dynamic electrical model of Sodium-Nickel Chloride Batteries
- Musio, Maura, Damiano, Alfonso | Renewable Energy Research and Applications (ICRERA), 2015 International Conference on (v.2015 / no.11 / pp.872-878 / 2015)
- In this paper a non-linear second order circuit model of high temperature Sodium-Nickel Chloride batteries (SNBs) is presented. The aim is the development of an accurate
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In this paper a non-linear second order circuit model of high temperature Sodium-Nickel Chloride batteries (SNBs) is presented. The aim is the development of an accurate model easily implementable in microgrids Energy Management System and suitable for their real-time control. The proposed model is based on the analysis of the experimental performance of a commercial 23.5 kWh SNB. In particular, the mathematical description of the used algorithm, the model parameters identification method as well as the measurement tests carried out for their evaluation are reported and discussed in detail. Then, the model is validated using a measured current-voltage profile, developed in order to trigger the whole battery operative range. The comparison between the experimental data and simulations has confirmed the good accuracy of the proposed model in a defined SOC range. However, due to the particular chemical composition of the battery positive electrode, a novel modelling approach specific for the SNB technology has been finally demonstrated to be necessary.
- Ad Injection at Scale: Assessing Deceptive Advertisement Modifications
- Thomas, Kurt, Bursztein, Elie, Grier, Chris, Ho, Grant, Jagpal, Nav, Kapravelos, Alexandros, Mccoy, Damon, Nappa, Antonio, Paxson, Vern, Pearce, Paul, Provos, Niels, Abu Rajab, Moheeb | Security and Privacy (SP), 2015 IEEE Symposium on (v.2015 / no.5 / pp.151-167 / 20151081-6011)
- Today, web injection manifests in many forms, but fundamentally occurs when malicious and unwanted actors tamper directly with browser sessions for their own profit. In t
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Today, web injection manifests in many forms, but fundamentally occurs when malicious and unwanted actors tamper directly with browser sessions for their own profit. In this work we illuminate the scope and negative impact of one of these forms, ad injection, in which users have ads imposed on them in addition to, or different from, those that websites originally sent them. We develop a multi-staged pipeline that identifies ad injection in the wild and captures its distribution and revenue chains. We find that ad injection has entrenched itself as a cross-browser monetization platform impacting more than 5% of unique daily IP addresses accessing Google -- tens of millions of users around the globe. Injected ads arrive on a client's machine through multiple vectors: our measurements identify 50,870 Chrome extensions and 34,407 Windows binaries, 38% and 17% of which are explicitly malicious. A small number of software developers support the vast majority of these injectors who in turn syndicate from the larger ad ecosystem. We have contacted the Chrome Web Store and the advertisers targeted by ad injectors to alert each of the deceptive practices involved.
- Thermal treatment improvement of CuSbS2 absorbers
- Willian de Souza Lucas, Francisco, Welch, Adam W., Baranowski, Lauryn L., Dippo, Patricia C., Mascaro, Lucia H., Zakutayev, Andriy | Photovoltaic Specialist Conference (PVSC), 2015 IEEE 42nd (v.2015 / no.6 / pp.1-5 / 2015)
- Thermal treatment in Sb 2 S 3 vapor was used to improve the quality of CuSbS 2 thin films, a promising non-toxic and earth-abundant absorber. A change in the CuSbS
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Thermal treatment in Sb 2 S 3 vapor was used to improve the quality of CuSbS 2 thin films, a promising non-toxic and earth-abundant absorber. A change in the CuSbS 2 crystallographic texture and a decrease in the lattice stress were observed, as well as increases in the grain size, photoluminescence intensity and photoconductivity. To eliminate the influence of the possible Sb 2 S 3 rich surface layer on photovoltaic performance, a selective chemical etching with KOH was developed.
- Injection-locked frequency divider and multiplier measurement system
- Hsu-Feng Hsiao, Chih-Ho Tu, Da-Chiang Chang, Jheng-Wei Wu, Janne-Wha Wu | Microwave Conference (APMC), 2015 Asia-Pacific (v.1 / pp.1-3 / 2015)
- In the past, the frequency locking range and injection-locked power sensitivity for injection-locked frequency divider and injection-locked frequency multiplier circuits
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In the past, the frequency locking range and injection-locked power sensitivity for injection-locked frequency divider and injection-locked frequency multiplier circuits might be measured and obtained by sight observation and writing down the measured results. Moreover, it might take a lot of time to measure and confirm frequency locking range and injection-locked power sensitivity by sight observation and writing down method. Therefore, in order to avoid these issues from sight observation and miswriting, this paper proposes an on-PCB and on-wafer injection-locked frequency divider and multiplier measurement system and presents how to calibrate, search and confirm frequency locking range and injection-locked power sensitivity by calibration and measurement software programmed by standard commands for programmable instruments (SCPI) with Keysight Visual Engineering Environment (VEE) software.
- Benders decomposition algorithm for reference network
- Zhang, Jie, Cao, Xiangyang, Tian, Xin, Wang, Zhen, Wang, Mingqiang, Han, Xueshan, Li, Shan | TENCON 2015 - 2015 IEEE Region 10 Conference (v.2015 / no.11 / pp.1-5 / 20152159-3442)
- A reference network is topologically identical to the existing network in which the generators and loads are not changed while the transmission line capacity will be opti
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A reference network is topologically identical to the existing network in which the generators and loads are not changed while the transmission line capacity will be optimized. By applying a reference network, the optimal transmission capacities of each line could be identified, as it takes annual operational and transmission costs into consideration. A reference network provides a standard to evaluate the real network objectively. The congestion costs can be quantified and the optimal investment proposal can also be obtained based on load forecasting. Furthermore, the weakness of the system can be detected by comparing those in the reference and the actual network. However, for a large-scale power system, it is extremely complicated to build the reference network, as the optimal capacities for each line must be determined considering various contingency events. In this paper a simplified Benders decomposition algorithm is presented and applied to solve this model. Simulation results show that this technique can reduce computation time and improve convergence performance.
- Analysis of spatially-coupled counter braids
- Rosnes, Eirik, Graell i Amat, Alexandre | Information Theory Workshop - Fall (ITW), 2015 IEEE (v.2015 / no.10 / pp.133-137 / 2015)
- A counter braid (CB) is a novel counter architecture introduced by Lu et al. in 2007 for per-flow measurements on high-speed links. CBs achieve an asymptotic compression
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A counter braid (CB) is a novel counter architecture introduced by Lu et al. in 2007 for per-flow measurements on high-speed links. CBs achieve an asymptotic compression rate (under optimal decoding) that matches the entropy lower bound of the flow size distribution. Spatially-coupled CBs (SC-CBs) have recently been proposed. In this work, we further analyze single-layer CBs and SC-CBs using an equivalent bipartite graph representation of CBs. On this equivalent representation, we show that the potential and area thresholds are equal. We also show that the area under the extended belief propagation (BP) extrinsic information transfer curve (defined for the equivalent graph), computed for the expected residual CB graph when a peeling decoder equivalent to the BP decoder stops, is equal to zero precisely at the area threshold. This, combined with simulations and an asymptotic analysis of the Maxwell decoder, leads to the conjecture that the area threshold is in fact equal to the Maxwell decoding threshold and hence a lower bound on the maximum a posteriori (MAP) decoding threshold. Finally, we present some numerical results and give some insight into the apparent gap of the BP decoding threshold of SC-CBs to the conjectured lower bound on the MAP decoding threshold.
- Analysis of XACML policies with ASP
- Ayed, Dhouha, Lepareux, Marie-Noelle, Martins, Cyrille | New Technologies, Mobility and Security (NTMS), 2015 7th International Conference on (v.2015 / no.7 / pp.1-5 / 2015)
- Security policy administrators face difficulties to ensure that the policies they specify in XACML correspond to what they intend to formulate and to understand their ove
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Security policy administrators face difficulties to ensure that the policies they specify in XACML correspond to what they intend to formulate and to understand their overall effect. This paper proposes a logic-based XACML3.0 analysis solution using Answer Set Programming (ASP) where Ansprolog is used to model the XACML decision process and an ASP solver is employed in an innovative way to perform logical reasoning on access control policies such as detecting conflicts in a multi-organizational context.
- Decomposition-based shape template matching for CBIR system
- Nikkam, Pushpalatha S., Hegde, Nagaratna P., Reddy, B. Eswar | Computational Intelligence and Computing Research (ICCIC), 2015 IEEE International Conference on (v.2015 / no.12 / pp.1-5 / 2015)
- Content Based Image Retrieval is a process to get a desired image from a substantial database. We propose a template for shape based hierarchical feature matching approac
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Content Based Image Retrieval is a process to get a desired image from a substantial database. We propose a template for shape based hierarchical feature matching approach for content based image retrieval system. It utilizes a combination of global feature for shape based templates. In this work a new learning method is put forth which is based on the hierarchal decomposition of the data. The proposed method establishes learning algorithm where the feature extraction process is executed to detect edge, orientations and shape of the dataset images. Thus extracted shape based features are used for matching the template to improve the retrieval accuracy. The proposed model is tested for the Wang dataset. The classification of dataset is taken care by the support vector machine algorithm with the accuracy of 99.09 % The retrieval results of proposed model is illustrated in terms of precision and recall, the improved efficiency of retrieval is compared to other existing models.