- Simulation framework for POF-based communication systems
- Lopez, Alicia, Angeles Losada, M., Mateo, Javier | Transparent Optical Networks (ICTON), 2015 17th International Conference on (v.2015 / no.7 / pp.1-4 / 2015)
- Plastic Optical Fibers (POFs) are in a good position to become the preferred media for cost-effective short-haul communications such as domestic and transport networks. H
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Plastic Optical Fibers (POFs) are in a good position to become the preferred media for cost-effective short-haul communications such as domestic and transport networks. However, the ever-increasing user demands drive POF systems to be operated close to their capacity. Therefore, the common practice to simulate the whole system in order to estimate its performance prior to its physical deployment is of paramount importance in POF-based communication links. In this work, we will present a system-level simulation framework able to evaluate the performance of POF systems with different layouts built with several passive and active components, including optical sources, detectors, fibers and connectors. Given the high multimodality of plastic optical fibers, the optical building blocks in the simulation framework are based on mathematical models that take into account both the temporal (frequency) and the spatial dimensions. We will show the possibility to assess not only basic IM/DD transmission, but also more advanced transmission techniques that can overcome the bandwidth limitations of POF, confirming how powerful the simulation framework is.
- 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.
- Fabrication of 1D photonic crystal on a single erbium chloride silicate nanowire and microcavity laser design
- Liu, Zhicheng, Sun, Hao, Li, Yongzhuo, Zhang, Jianxing, Ning, C. Z. | Lasers and Electro-Optics (CLEO), 2015 Conference on (v.2015 / no.5 / pp.1-2 / 2015)
- We report on fabrication and characterization of 1D photonic crystal on a single erbium chloride silicate nanowire. Design and simulation show that a microcavity laser wi
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We report on fabrication and characterization of 1D photonic crystal on a single erbium chloride silicate nanowire. Design and simulation show that a microcavity laser with Q-factor over 10000 is feasible from a single nanowire.
- Simulation modeling of customer checkout configurations
- Rossetti, Manuel D., Pham, Anh T. | Winter Simulation Conference (WSC), 2015 (v.2015 / no.12 / pp.1151-1162 / 2015)
- A simulation model based on a case study of a retail customer check out area and two extended models is presented. The first extended model examines the customer's criter
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A simulation model based on a case study of a retail customer check out area and two extended models is presented. The first extended model examines the customer's criteria when picking a checkout lane. The second extension examines the checkout layout, in which the payment is separated from the checkout station. The results show no significant difference in checkout time based on the lane choice criteria. However, the average waiting time drops significantly when payment is separated from the checkout area.
- Simulation platform of atmosphere based on GIS
- Xu, Hongxin, Li, Ge, Xu, Xiao, Yang, Shanliang | Information and Automation, 2015 IEEE International Conference on (v.2015 / no.8 / pp.1723-1726 / 2015)
- Currently, the research of GIS and environmental models has made great progress, but the combination of both is still a difficulty. Aiming at the integration of GIS and e
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Currently, the research of GIS and environmental models has made great progress, but the combination of both is still a difficulty. Aiming at the integration of GIS and environment model, the paper drew some functional components from open source geographic information system, and embedded the atmosphere environment model into GIS as application program interface by hybrid programming, achieved the effective integration of GIS and models, constructed the simulation platform. During the designing process, we used a number of key technologies to optimize the platform, such as design of SQLite-based database systems, Gaussian coordinate conversion, design of simulation run management software based on multi-threaded, improved the efficiency of simulation. Finally, take Beijing haze for example to verify the effectiveness of the platform, tests show that the simulation result is reasonable and effective, and the platform runs more efficiently.
- A system of categorization and classification based on certain criteria
- Gyorodi, Robert, Gyorodi, Cornelia, Tontea, Anamaria, Bandici, Livia | Computers Communications and Control (ICCCC), 2016 6th International Conference on (v.2016 / no.5 / pp.208-212 / 2016)
- This paper proposes a new system of categorization and classification using data mining techniques based on certain criteria/topics. We describe the design and implementa
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This paper proposes a new system of categorization and classification using data mining techniques based on certain criteria/topics. We describe the design and implementation of proposed system that automatically categorizes a restaurant as being good or bad, using data mining techniques, based on users' reviews. For this study we took a data set consisting of approximately 9,000 reviews for 2,355 restaurants in Romania. The categorization was done on four criteria/topics: food, service, prices, atmosphere, and the results are represented as a range for each topic separately.
- Co-simulation for a flexible four-bar mechanism
- Fu-Shin Lee, Chen-I Lin, Zhi-Yu Chen | 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.
- Recognizing cultural events in images: A study of image categorization models
- Heeyoung Kwon, Kiwon Yun, Minh Hoai, Samaras, Dimitris | Computer Vision and Pattern Recognition Workshops (CVPRW), 2015 IEEE Conference on (v.2015 / no.6 / pp.51-57 / 2015)
- The goal of this work is to study recognition of cultural events represented in still images. We pose cultural event recognition as an image categorization problem, and w
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The goal of this work is to study recognition of cultural events represented in still images. We pose cultural event recognition as an image categorization problem, and we study the performance of several state-of-the-art image categorization approaches, including Spatial Pyramid Matching and Regularized Max Pooling. We consider SIFT and color features as well as the recently proposed CNN features. Experiments on the ChaLearn dataset of 50 cultural events, we find that Regularized Max Pooling with CNN, SIFT, and Color features achieves the best performance.
- Deterioration mechanism of connectors used in long driven vehicles
- Sawada, Shigeru, Saitoh, Yasushi, Iida, Kazuo | Electrical Contacts (Holm), 2015 IEEE 61st Holm Conference on (v.2015 / no.10 / pp.141-146 / 2015)
- It is an important issue to investigate the deterioration state of connectors used in long driven vehicles in order to develop vehicle connectors. There are a few reports
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It is an important issue to investigate the deterioration state of connectors used in long driven vehicles in order to develop vehicle connectors. There are a few reports that investigated the deterioration state of connectors used in long driven vehicles in detail. Therefore, the deterioration state of a connector collected from a vehicle (driven for 8 years, 100,000km mileage) was investigated through the terminal resistance, the observation of connector surface, and oxidized abrasion powder in this study. Moreover, we investigated temperature environment and vibration status in the actual vehicle environment to identify the main factor of the connector deterioration. From these results, the deterioration of connectors used in long driven vehicles was estimated to be mainly fretting wear caused by vibration. In addition, the fretting cycle of fretting corrosion test in laboratory equivalent to fretting in 8 years 100,000km mileage driven was figured out by comparing the radius of the oxidized abrasion powder in fretting corrosion test with in corrected terminals.
- The Impact of Senior-Friendliness Guidelines on Seniors' Use of Personal Health Records
- Ogunseye, Shawn, Komiak, Sherrie X. Y., Komiak, Paul | Healthcare Informatics (ICHI), 2015 International Conference on (v.2015 / no.10 / pp.597-602 / 2015)
- Usability is a key determinant of the adoption and use of Personal Health Record (PHR) by seniors. Usability principles exist to guide developers in the creation of senio
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Usability is a key determinant of the adoption and use of Personal Health Record (PHR) by seniors. Usability principles exist to guide developers in the creation of senior-friendly PHRs. The purpose of this study is to understand why seniors still perceive the usability of PHRs as low in spite of these publicly available guidelines. 16 PHRs were evaluated with a senior-focused website usability guideline to assess developers' level of compliance. We found that though there are usability issues that need to be improved upon by PHR developers, some of the PHRs should be usable and senior-friendly. To understand the discrepancy between results of heuristic or guideline-based evaluation and reports from actual use, we contend that a need to assess existing usability standards for their suitability in guiding the creation of senior-friendly PHRs exist.
- Identification of line of sight by cross polarization characteristic
- Morita, Atsuki, Iwai, Hisato, Sasaoka, Hideichi | Antennas and Propagation (ISAP), 2015 International Symposium (v.2015 / no.11 / pp.1-4 / 2015)
- In this paper, we identified line of sight (LOS) by cross polarization discrimination (XPD). We analyzed the propagation characteristic by the Finite Difference Time Doma
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In this paper, we identified line of sight (LOS) by cross polarization discrimination (XPD). We analyzed the propagation characteristic by the Finite Difference Time Domain (FDTD) method, and statistically evaluated the performance of the LOS identification based on XPD. As a result of the evaluation, we found it is difficult to obtain sufficient identification performance only by XPD. Therefore, we developed a new identification method combining XPD and the received power. By using the method, we showed successful identification rate of about 80% could be obtained.
- Identification and Estimation of temperature in Nitration process
- Shobana, R., Sreepradha, C., Sobana, S., Panda, Rames C. | Technological Innovation in ICT for Agriculture and Rural Development (TIAR), 2015 IEEE (v.2015 / no.7 / pp.165-170 / 2015)
- The nitration of organic compounds is among the basic reactions used in synthesis of many compounds used in agrochemicals industries, pharmaceuticals, dyes and agricultur
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The nitration of organic compounds is among the basic reactions used in synthesis of many compounds used in agrochemicals industries, pharmaceuticals, dyes and agriculture. The Nitration process are usually carried out as batch process in aqueous phase as they are very sensitive and liable to explode. A very close control of heat and mass transfer is necessary as it leads to selectivity of reaction under safe condition. This prevents the thermal loss of control of the system, so that the reaction temperature rise can be limited below a critical value. The Present work carries out the Identification and Estimation of model states of a runaway reaction. The temperature data are collected from exothermic reactor and the optimal model is identified using NARX method. The Kalman, Extended Kalman and Unscented Kalman filter dynamics are studied and implementation and design of the optimal filters are carried out. The filter algorithms are used to estimate the concentration and temperature in the presence of random noise in measurement. The nonlinear estimators are compared for selection of best estimator. The results are found motivating for development of control.
- Pre-treatment planning for hepatic radiofrequency ablation
- Qiyong Chen, Muftu, Sinan, Meral, F. Can, Tuncali, Kemal, Akcakaya, Murat | Signal Processing in Medicine and Biology Symposium (SPMB), 2015 IEEE (v.2015 / no.12 / pp.1-6 / 2015)
- We develop a pre-treatment planning method for optimum hepatic radiofrequency (RF) ablation. In conventional methods, pre-treatment planning is minimal and for a specific
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We develop a pre-treatment planning method for optimum hepatic radiofrequency (RF) ablation. In conventional methods, pre-treatment planning is minimal and for a specific tumor size, it only includes reading pre-specified treatment length and input voltage values from a look-up table that lists experimentally obtained ablation parameters. Such planning, in order to assure certain level of cell death, usually results in more healthy cell damage than desired. Different than the conventional methods, here, we develop a model-based pre-treatment optimal planning framework. As an example, we use 1-D axisymmetric tissue geometry and over this geometry, we solve Pennes' bioheat and Laplace equations to model the RF heating. Using the solutions of these equations, we define constrained nonlinear optimization problems to achieve specific temperature profiles in certain areas of the tissue. Results demonstrate that compared to the conventional methods, our approach significantly improves the healthy tissue preservation.
- Community recycling models for remanufacturing system
- Minhong, Zhang, Yuqiang, Fu | Control and Decision Conference (CCDC), 2015 27th Chinese (v.2015 / no.5 / pp.3920-3924 / 2015)
- This article reports the results of a study that explores the choice of the community recycling channels in the closed-loop supply chain. The used products are collected
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This article reports the results of a study that explores the choice of the community recycling channels in the closed-loop supply chain. The used products are collected by the manufacturer or community service center. A model contains single manufacturer and single community service center was established and solved based on the relationship between unit take-back cost, the beginning investment parameter and the return rate. In addition, we show that simple coordination mechanisms can be designed such that the collection effort of community service center and the supply chain profits are attained at the same level as in a centrally coordinated system. In order to explain the remanufacturing impact on enterprise profits, we also consider the case of no recycling as a comparison.
- Treatment of biased and dependent sensor data in graph-based SLAM
- Noack, Benjamin, Julier, Simon J., Hanebeck, Uwe D. | Information Fusion (Fusion), 2015 18th International Conference on (v.2015 / no.7 / pp.1862-1867 / 2015)
- A common approach to attack the simultaneous localization and mapping problem (SLAM) is to consider factor-graph formulations of the underlying filtering and estimation s
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A common approach to attack the simultaneous localization and mapping problem (SLAM) is to consider factor-graph formulations of the underlying filtering and estimation setup. While Kalman filter-based methods provide an estimate for the current pose of a robot and all landmark positions, graph-based approaches take not only the current pose into account but also the entire trajectory of the robot and have to solve a nonlinear least-squares optimization problem. Using graph-based representations has proven to be highly scalable and very accurate as compared with traditional filter-based approaches. However, biased measurements as well as unmodeled correlations can lead to a sharp deterioration in the estimation quality and hence require careful consideration. In this paper, a method to incorporate biased or dependent measurement information is proposed that can easily be integrated into existing optimization algorithms for graph-based SLAM. For biased sensor data, techniques from ellipsoidal calculus are employed to compute the corresponding information matrices. Dependencies among noise terms are treated by a generalization of the covariance intersection concept. The treatment of both biased and correlated sensor data rest upon the inflation of the involved error matrices. Simulations are used to discuss and evaluate the proposed method.
- Procrustean decomposition for orthogonal cascade detection
- Kun Duan, Wei Wang, Ting Yu | Applications of Computer Vision (WACV), 2016 IEEE Winter Conference on (v.2016 / no.3 / pp.1-9 / 2016)
- In this paper, our goal is to speed up a standard sliding window detector while maintaining detection accuracies. We do this by decomposing its weight template into multi
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In this paper, our goal is to speed up a standard sliding window detector while maintaining detection accuracies. We do this by decomposing its weight template into multiple component detectors with no redundancy. Each component detector captures partial discriminative appearance, and they can be used in a cascade detection pipeline to aggressively reduce the size of search space. We formulate the decomposition problem as an orthogonal procrustes problem. We further approximate the component detector in the first cascade layer as separable 2D filters (i.e. a product between two vector filters). The running time of such component detector is thus reduced from quadratic to linear with the dimension lengths of the detector template. We conduct extensive experiments using our approach on two well-known object detection datasets: INRIA pedestrian detection dataset and PASCAL VOC 2007 detection dataset. We used HOG features and CNN features in our experiments. Our approach is almost 'free lunch': without manipulating the feature representations, it makes the detection process several times faster.
- Stability Analysis and Trajectory Tracking Control of Articulated Heavy Vehicles
- Jie, Tian, Qingyun, Chen, Zhipeng, Song, Lian, Xu, Meiying, Li | Intelligent Transportation, Big Data and Smart City (ICITBS), 2015 International Conference on (v.2015 / no.12 / pp.744-748 / 2015)
- Articulated heavy vehicles have heavy loads, high shipping efficiency and low mileage cost. But due to the interaction between the tractor and the trailer, it is easy to
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Articulated heavy vehicles have heavy loads, high shipping efficiency and low mileage cost. But due to the interaction between the tractor and the trailer, it is easy to appear 'jack-knifing' or 'trailer sway' and it is difficult to follow the given path of the travel. To this end, a four degrees of freedom single track model of a tractor/full-trailer is built, and the stability analysis is carried on to study the influences of the structural and operating parameters on the vehicle. Furthermore the trajectory tracking controller of trailer is designed, which can ensure that the trajectory of the trailer follows that of the tractor exactly by the control of the active front wheel steering angle of the trailer and the vehicle can maintain good handling stability.
- Simulation-Driven Optimization of Real-Time Control Tasks
- Morelli, Matteo, Seddik, Yasmina, Di Natale, Marco, Mraidha, Chokri, Tucci-Piergiovanni, Sara | High Performance Computing and Communications (HPCC), 2015 IEEE 7th International Symposium on Cyberspace Safety and Security (CSS), 2015 IEEE 12th International Conferen on Embedded Software and Syst (v.2015 / no.8 / pp.991-1000 / 2015)
- In this paper we define a simulation-driven process to improve the design of real-time control systems. The process aims at exploring the interplay between control perfor
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In this paper we define a simulation-driven process to improve the design of real-time control systems. The process aims at exploring the interplay between control performance and real-time behavior of control tasks. The traditional design flows based on the definition of implicit tasks deadlines on control functions are extended to include the exploration of relaxed deadlines and order of execution constraints. Relaxed deadlines, coupled with an optimization approach to find feasible task sets, allow the exploration and evaluation of different task implementations. The definition of relaxed deadlines and the evaluation of task implementations is performed using the T-Res (Time and Resource) scheduling simulation framework [21] under Simulink. The problem is defined as a quadratic optimization problem using a tight upper bound formulation of the task response times. The application of the method to a quadcopter case study shows how the consideration of the control performance in the definition of the timing parameters of interest can lead to an improved design.
- Restructuring cultural heritage collections in the basic formal ontology
- Zou, Qing, Park, Eun G. | Digital Heritage, 2015 (v.2 / pp.483-484 / 2015)
- This study aims to build an event based ontology in order to apply semantic web technologies to cultural heritage collections and restructure them more explicitly in web
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This study aims to build an event based ontology in order to apply semantic web technologies to cultural heritage collections and restructure them more explicitly in web environments.
- Analysis of a novel time-delay diabetes model
- Kovacs, Levente, Kurtan, Balazs, Eigner, Gyorgy, Rudas, Imre, Chee Kong Chui | Control Conference (ECC), 2015 European (v.2015 / no.7 / pp.13-18 / 2015)
- Nowadays, the requirements in the high quality managing and mathematical modeling of diabetes are increasing. Due to the several types of this chronic disease the problem
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Nowadays, the requirements in the high quality managing and mathematical modeling of diabetes are increasing. Due to the several types of this chronic disease the problem represents a challenging task that was mostly covered in the literature for type 1 diabetes while examining algorithms for artificial pancreas. The aim of the current paper is to analyze a recently developed novel time-delay diabetes model elaborated for both type 1 and type 2 diabetes mellitus; hence, to handle mixed state of these diseases (double diabetes) as well. Control theoretical characteristics are investigated followed by parametric sensitivity analysis for both type 1 and type 2 cases. Finally, the model is compared with the well-known and widely used Cambridge (Hovorka)-model under different simulation scenarios.