Community clouds at the edge deployed in Guifi.net

Baig, Roger, Freitag, Felix, Khan, Amin M., Moll, Agusti, Navarro, Leandro, Pueyo, Roger, Vlassov, Vladimir | Cloud Networking (CloudNet), 2015 IEEE 4th International Conference on (v.2015 / no.10 / pp.213-215 / 2015)

Community clouds are a cloud deployment model in which the cloud infrastructure is built with specific features for a community of users with shared concerns, goals, and

초록보기원문보기 >

Community clouds are a cloud deployment model in which the cloud infrastructure is built with specific features for a community of users with shared concerns, goals, and interests. Commercial community clouds already operate in several application areas such as in the finance, government and health, fulfilling community-specific requirements. In this demo, a community cloud for citizens is presented. It is formed by devices at the edge of the network, contributed by the members of a community network and brought together into a distributed community cloud system through the Cloudy distribution. The demonstration shows to the audience in a live access the deployed community cloud from the perspective of the user, by accessing a Cloudy node, inspecting the services available in the community cloud, and showing the usage of some of its services.

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

초록보기원문보기 >

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.

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

초록보기원문보기 >

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.

A practical path planning and navigation algorithm for an unmanned surface vehicle using the fast marching algorithm

Liu, Yuanchang, Song, Rui, Bucknall, Richard | OCEANS 2015 - Genova (v.2015 / no.5 / pp.1-7 / 2015)

There has been an increasing interest in the development of unmanned surface vehicles (USVs) in recent decades. As USVs are required to carry out complex missions without

초록보기원문보기 >

There has been an increasing interest in the development of unmanned surface vehicles (USVs) in recent decades. As USVs are required to carry out complex missions without any human intervention in various environments, an intelligent path planning algorithm is critical. A path planning algorithm is able to utilise environment data to calculate an optimal trajectory to guarantee safety. To achieve this, in this paper, a novel path planning and navigation (PN) algorithm is proposed. The PN algorithm uses the fast marching method (FMM) as the base algorithm to search for an optimal collision-free trajectory. Then, to facilitate the trajectory tracking of the USV, a new waypoint-generator based on the line-of-sight (LOS) is developed to generate the optimal number of waypoints from the path. The proposed algorithm has been evaluated based on the Springer USV, and has been shown that it can be seamlessly integrated with the Springer's exiting autopilot to achieve full autonomy.

Mining gold in senior executives' pockets: An online automatically trading strategy

Chao Ma, Xun Liang | Machine Learning and Cybernetics (ICMLC), 2015 International Conference on (v.1 / pp.151-156 / 2015)

Online financial news is an important part of financial Big Data. In this paper, we propose a model to promptly recognize valuable news about senior executives' behavior

초록보기원문보기 >

Online financial news is an important part of financial Big Data. In this paper, we propose a model to promptly recognize valuable news about senior executives' behavior and an online automatically trading strategy based on the model. Our model consists of three phases. First, word segmentation and keyword extraction are employed to quantify the financial text. For a better efficiency and promptness, manifold learning is utilized to reduce the dimension of keyword vector. Second, the idea of financial event study is utilized to judge whether a specific type of news could produce significantly positive or negative return. Third, support vector machine is employed to recognize the specific financial news and associate the quantified text with the stock return. Experiments show that the recognition work performed excellently and the behavior of increasing shareholdings produces significant positive return. Our online automatically trading strategy based on the model obtained a return of 55.62%, outperforming three main benchmarks in the same period, 4.52%, 12.47% and -6.89% respectively.

Design of low power operational TPMS system

So Yeon Kim, Chang Seok Chae, Intae Hwang, Sol Lim, Han Wool Choi, Dae Jin Kim | Communications, Computers and Signal Processing (PACRIM), 2015 IEEE Pacific Rim Conference on (v.2015 / no.8 / pp.344-347 / 2015)

Globally, safety technology of smart cars is developing for drivers' safety. Because the eye inspection of tire pressure is difficult, automatic sensing of the tire press

초록보기원문보기 >

Globally, safety technology of smart cars is developing for drivers' safety. Because the eye inspection of tire pressure is difficult, automatic sensing of the tire pressure is very important. Tire pressure monitoring system measures tires' pressure and temperature. By using TPMS system we can reduce pollution emissions, fuel consumption and car accident. U.S.A NHTSA made a law to use TPMS on cars. In this paper, two short frames are designed with unidirectional communication, which use minimum number of bits for low power operation. And the software of TPMS sensor module is designed such that the sensor mostly resides in deep sleep mode.

A hybrid finite element-discontinuous galerkin solver for analyzing electromagnetics-plasma interaction in Four Dimensions

Yan, Su, Jin, Jian-Ming | Radio Science Meeting (Joint with AP-S Symposium), 2015 USNC-URSI (v.2015 / no.7 / pp.82-82 / 2015)

High-power microwave (HPM) devices and systems have very important civilian and military applications. However, as the power density goes higher and higher, the HPM devic

초록보기원문보기 >

High-power microwave (HPM) devices and systems have very important civilian and military applications. However, as the power density goes higher and higher, the HPM devices and systems are more and more vulnerable to the HPM breakdown, which becomes a critical limiting factor for the generation and transmission of the HPM radiation and the operation of HPM devices and systems. During HPM breakdown, the particle density and velocity in a HPM device can be modeled by plasma fluid equations with various ionization parameters, which would become highly nonlinear when the electromagnetic (EM) field intensity is sufficiently high (J. A. Bittencourt, Fundamentals of Plasma Physics. New York: Springer-Verlag, 2004).

Simulation of Carbon Sources Distribution in Campus

Xu, Xiaolong, Zhong, Zeng, Jia, Guo | Intelligent Computation Technology and Automation (ICICTA), 2015 8th International Conference on (v.2015 / no.6 / pp.826-828 / 2015)

This paper investigates carbon dioxide distribution in Shenyang Jianzhu University. in This study, computational fluid dynamic is applied for calculating wind tunnel, by

초록보기원문보기 >

This paper investigates carbon dioxide distribution in Shenyang Jianzhu University. in This study, computational fluid dynamic is applied for calculating wind tunnel, by adopting species transport model, and carbon dioxide concentration is determined in the whole campus. Results shows that, the concentration will be higher where is closer to carbon sources. Also, where the wind speed is fast, the concentration will below and wide. At last, simulation Results matches experiments very well. This paper could provide a guideline to urban planning.

Simulation study of a novel Relaxometer shield design

Bauer, L. M., Hensley, D. W., Goodwill, P. W., Conolly, S. M., Griswold, M. A. | Magnetic Particle Imaging (IWMPI), 2015 5th International Workshop on (v.2015 / no.3 / pp.1-1 / 2015)

Developing tracers for MPI and related applications requires a thorough understanding of underlying relaxation processes. In X-Space MPI reconstruction, relaxation has a

초록보기원문보기 >

Developing tracers for MPI and related applications requires a thorough understanding of underlying relaxation processes. In X-Space MPI reconstruction, relaxation has a profound impact on the image through a decrease in SNR and direction-dependent blurring. To probe the relaxation of potential MPI tracers, Goodwill et al., have developed an X-Space Relaxometer that measures the MPI point spread function and accurately predicts image quality.[1,2] The present work introduces a new relaxometer with improved eddy current shielding to achieve a significant gain in sensitivity. A simulation of the enhanced shielding has shown to attenuate external interference by more than 40dB in the detection bandwidth.

Injection efficiency of DI and CTIA readout integrated circuit

Pengyun Song, Zhenhua Ye, Weida Hu, Xiaoning Hu | Numerical Simulation of Optoelectronic Devices (NUSOD), 2015 International Conference on (v.2015 / no.9 / pp.81-82 / 20152158-3234)

Advanced hybrid infrared focal plane arrays (IRFPA) consist of a semiconductor photodetector chip which is bump-bonded to a silicon CMOS readout integrated circuit (ROIC)

초록보기원문보기 >

Advanced hybrid infrared focal plane arrays (IRFPA) consist of a semiconductor photodetector chip which is bump-bonded to a silicon CMOS readout integrated circuit (ROIC) chip generally containing a reset integrator preamp to accumulate detector photon-induced current over a fixed integration time. A number of readout structures have been developed for different system applications and concerns, among which the direct injection (DI) and the capacitor feedback transimpedance amplifier (CTIA) are popularly used. The structures and performances, especially injection efficiency, of DI and CTIA are respectively discussed and compared. The DI enables an ultralow power consumption and has a high injection efficiency at large background photocurrent, while the CTIA has a comparatively higher power dissipation and higher injection efficiency at low background photocurrent.

Reconstructing cultural heritage objects from storytelling

Rizvic, Selma, Skalonjic, Izabela | Digital Heritage, 2015 (v.2 / pp.221-226 / 2015)

Once upon a time in a small city of Sjenica, Serbia, there was a fortress. The Ottoman Sultan Murat IV has built it to protect and control this important region. Today at

초록보기원문보기 >

Once upon a time in a small city of Sjenica, Serbia, there was a fortress. The Ottoman Sultan Murat IV has built it to protect and control this important region. Today at that location there is an elementary school. There is no trace of the fortress neither at the place nor in the memory of people. But, an old man still remembers it from his childhood. In this paper we describe how we recreated the cultural heritage object of Sultan Murat's fortress in Sjenica from storytelling. We present the created interactive multimedia application and the impressions of Sjenica citizens after a part of their history was returned to their collective memory.

Identification of UHF Gen 2 RFID privacy and security issues

Deepika, K., Usha, J. | Radar, Antenna, Microwave, Electronics, and Telecommunications (ICRAMET), 2015 International Conference on (v.2015 / no.10 / pp.82-86 / 2015)

Radio frequency identification (RFID) is a non-wired electromagnetic transmission to communicate between an end terminal and a chip-less tag with the principle of identif

초록보기원문보기 >

Radio frequency identification (RFID) is a non-wired electromagnetic transmission to communicate between an end terminal and a chip-less tag with the principle of identification. Privacy protection and safety assurance are critical as RFID tags have an extensive range of conveyance with unauthorized scanning by malicious readers to broadcast data. Effectual confidentiality and security protocols should be exercised to safeguard the statistics in determining the exact radio waves. Characteristics of radio frequency wireless communication are accessible and the capabilities of the sensor nodes are adequate for providing protection and integrity. Analysis and exploration of the strategies on threats and countermeasures for wireless sensor network on access, retrieval and scalability of records are deliberated in this paper.

Decomposition of contact force using contact pressure for haptic augmented reality

Kim, Hyoungkyun, Choi, Seungmoon, Chung, Wan Kyun | Ubiquitous Robots and Ambient Intelligence (URAI), 2015 12th International Conference on (v.2015 / no.10 / pp.194-196 / 2015)

In this paper, we present a decomposition method of contact force between a haptic interface and an object for haptic augmented reality. The proposed method uses contact

초록보기원문보기 >

In this paper, we present a decomposition method of contact force between a haptic interface and an object for haptic augmented reality. The proposed method uses contact pressure distribution as well as force measurement. Thanks to the contact pressure distribution, the proposed method can find the right normal direction regardless of large shear deformation. The simulation result validated the performance of the proposed method.

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

초록보기원문보기 >

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.

Identification discrete fractional order Hammerstein systems

Ivanov, D. V. | Control and Communications (SIBCON), 2015 International Siberian Conference on (v.2015 / no.5 / pp.1-4 / 2015)

New algorithm is proposed for identification single-input-single-output (SISO) discrete fractional order Hammerstein systems. The estimates are proved to be convergent to

초록보기원문보기 >

New algorithm is proposed for identification single-input-single-output (SISO) discrete fractional order Hammerstein systems. The estimates are proved to be convergent to the true values with probability one. The results of a simulated example indicate that the proposed algorithm provides good estimates.

Electron-injection detectors for swept source optical coherence tomography

Fathipour, V., Mohseni, H. | Lasers and Electro-Optics (CLEO), 2015 Conference on (v.2015 / no.5 / pp.1-2 / 2015)

Electron-injection detectors are used in an OCT system for the first time. Compared to a commercial p-i-n detector, electron-injection detectors show ~20 dB higher SNR. T

초록보기원문보기 >

Electron-injection detectors are used in an OCT system for the first time. Compared to a commercial p-i-n detector, electron-injection detectors show ~20 dB higher SNR. This could lead to OCT systems without the need for balanced-detection.

Evolved injection seeded THz-wave spectrometer for mail inspection

Kawase, Kodo, Yamzaki, Ryo, Imayama, Kazuki, Murate, Kosuke | Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2015 40th International Conference on (v.2015 / no.8 / pp.1-2 / 2015)

In 2003, we demonstrated a non-destructive terahertz spectroscopic imaging of illicit drugs hidden in envelopes using a widely tunable THz-wave parametric source [1], tho

초록보기원문보기 >

In 2003, we demonstrated a non-destructive terahertz spectroscopic imaging of illicit drugs hidden in envelopes using a widely tunable THz-wave parametric source [1], though its dynamic range at that time was less than four orders. Recently, we have realized ten orders of dynamic range with an evolved injection seeded THz-wave spectrometer. Now we can detect drugs under much thicker obstacles than before. In this report, we introduce related topics; 1) Enhanced tuning range up to 4.7 THz, 2) gt;90dB dynamic range THz detection using near infrared detector, 3) Comparison between is-TPG spectrometer and TDS, and 4) THz-wave amplifier.

Categorizing food names in restaurant reviews

Prakhash, S., Nazick, A., Panchendrarajan, R., Brunthavan, M., Ranathunga, S., Pemasiri, A. | Moratuwa Engineering Research Conference (MERCon), 2016 (v.2016 / no.4 / pp.1-5 / 2016)

There are many aspects such as food, service, and ambience that a customer would look for, when deciding on a restaurant to dine in. Among these aspects, the type of food

초록보기원문보기 >

There are many aspects such as food, service, and ambience that a customer would look for, when deciding on a restaurant to dine in. Among these aspects, the type of food it sells and the food quality are the most important. Therefore, when automatically rating restaurants based on customer reviews, the food aspect plays a major role. There exists some research on rating individual food items in a restaurant. However, a potential customer requires not the ranking of an individual food item, but the ranking of a particular food category in general. In order to do that, a categorization of food names is required. This paper presents two techniques for food name categorization using document similarity measurements.

Analysis of a radial flux hysteresis IPM motor

Rabbi, S. F., Rahman, M. A. | Electrical and Computer Engineering (CCECE), 2015 IEEE 28th Canadian Conference on (v.2015 / no.5 / pp.7-12 / 20150840-7789)

Design of self-start permanent magnet motors over wide operating range has been a challenging topic of interest among the researchers over the last two decades. This pape

초록보기원문보기 >

Design of self-start permanent magnet motors over wide operating range has been a challenging topic of interest among the researchers over the last two decades. This paper presents the design and finite element analysis of a novel 1HP 208V 3-phase 4-pole line start radial flux hysteresis interior permanent magnet (IPM) motor. The proposed motor is a solid-rotor self-starting hybrid synchronous motor combining both hysteresis phenomena and permanent magnet excitation inside the rotor. The transient performance analysis results of the hysteresis IPM motor are presented and explained in this paper. Simulation results exhibit that the proposed hysteresis IPM motor has smooth starting and good synchronization capabilities.

A new implementation method of low stiffness for magnetic levitation gravity compensator

Zhang, H., Kou, B., Jin, Y., Zhang, H. | Magnetics Conference (INTERMAG), 2015 IEEE (v.2015 / no.5 / pp.1-1 / 2015)

Magnetic levitation is one of the solutions for high-precision positioning systems due to its non-contact characteristic. Magnetic bearings have the potential of replacin

초록보기원문보기 >

Magnetic levitation is one of the solutions for high-precision positioning systems due to its non-contact characteristic. Magnetic bearings have the potential of replacing the air bearings that are used in the semiconductor industry in which the vacuum environment is increasingly required. For the traditional z-actuators in the multi-DOF fine stage, a continuous power loss is inevitable because the z-actuators are required to support the moving mass. Therefore, the heat form the coils will cause the temperature rise and structural distortion, which both deteriorate the positioning accuracy. A good solution is to support the moving mass by passive magnetic force. However, the major difficulty in using passive magnetic force is the highly position-dependent characteristic. From the aspects of positioning accuracy and vibration isolation, the stiffness that are defined as the position dependency of the magnetic force should be kept as low as possible. To date, the main reasons of the stiffness error between theoretical analysis and experiment results are ascribed to assembling error and machining tolerance. However, it is not entirely true for the low-stiffness applications. In this paper, the essential reason causing the stiffness error is analyzed and a new method to realize low stiffness for passive magnetic levitation is proposed.