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Electrical and Electronics Engineering publications abstract of: 12-2012 sorted by title, page: 0
» "Pull Moves” for Rectangular Lattice Polymer Models Are Not Fully Reversible
Abstract:
"Pull moves” is a popular move set for lattice polymer model simulations. We show that the proof given for its reversibility earlier is flawed, and some moves are irreversible, which leads to biases in the parameters estimated from the simulations. We show how to make the move set fully reversible.
Autors: Gy\örffy, D\ániel;Z\ávodszky, P\éter;Szil\ágyi, Andr\ás;
Appeared in: IEEE/ACM Transactions on Computational Biology and Bioinformatics
Publication date: Dec 2012, volume: 9, issue:6, pages: 1847 - 1849
Publisher: IEEE
 
» 0.5V bulk-driven analog building blocks
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Autors:
Appeared in: AEU - International Journal of Electronics and Communications
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» 0.8V PLL-based automatic frequency tuning system for current-mode filters
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Autors:
Appeared in: AEU - International Journal of Electronics and Communications
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» 1-cm-Spatial-Resolution Brillouin Optical Time-Domain Analysis Based on Bright Pulse Brillouin Gain and Complementary Code
Abstract:
We studied the impact of optical pulse coding techniques on Brillouin optical time-domain analysis (BOTDA) systems experimentally. The results show that complementary-coding-based schemes can provide significant enhanced signal-to-noise ratio (SNR) to the BOTDA system. Using complementary coding, the average time can be reduced significantly and so does the measurement time. The complementary-coded pulses with individual pulse duration of 0.1 ns allowed us to realize temperature sensing over 50 m of single-mode fiber with 1-cm spatial resolution.
Autors: Mao, Y.;Guo, N.;Yu, K. L.;Tam, H. Y.;Lu, C.;
Appeared in: IEEE Photonics Journal
Publication date: Dec 2012, volume: 4, issue:6, pages: 2243 - 2248
Publisher: IEEE
 
» 10.7-Gb/s Real-Time Transmission Over 1-mm Large-Core Polymer Optical Fiber Using Maximum Likelihood Sequence Estimation
Abstract:
We report 10.7-Gb/s nonreturn-to-zero (NRZ) real-time transmission over a 1-mm large-core polymethylmetacrylate polymer optical fiber (POF) using maximum likelihood sequence estimation. A maximum link length of 10 m of a standard step-index POF (SI-POF) and 35-m graded-index POF (GI-POF) was achieved with a fiber coupled power of 0 dBm, in order to comply with consumer eye-safety regulations. In order to show the robustness of this approach, the influence of fiber bends and different launching conditions were investigated. If the optical output power is increased to the link length can be increased up to 40 m of GI-POF.
Autors: Loquai, S.;Noelscher, T.;Bunge, C.-A.;Kupfer, T.;Winkler, F.;Hartl, E.;Schmauss, B.;
Appeared in: IEEE Photonics Technology Letters
Publication date: Dec 2012, volume: 24, issue:24, pages: 2229 - 2231
Publisher: IEEE
 
» 100 Gb/s and Beyond for Submarine Systems
Abstract:
Starting from a recent experiment showing the transmission of 80 channels at 100 Gb/s over transoceanic distances, we propose an experimental comparison of solutions for reaching higher capacity. We present transmission experiments at various spectral efficiencies ranging from 2 to 5 b/s/Hz and we compare different error-correcting code schemes in order to clarify the impact of different solutions on the transmission reach. The results of all the proposed experiments lead to an analysis of the state of the art that highlights the difficulties and the challenges of going beyond 100 Gb/s in submarine systems.
Autors: Salsi, M.;Renaudier, J.;Bertran-Pardo, O.;Mardoyan, H.;Tran, P.;Charlet, G.;Bigo, S.;
Appeared in: Journal of Lightwave Technology
Publication date: Dec 2012, volume: 30, issue:24, pages: 3880 - 3887
Publisher: IEEE
 
» 100G Transmission Over Transoceanic Distance With High Spectral Efficiency and Large Capacity
Abstract:
In this paper, we review recent advances in undersea 100G system research with high spectral efficiency and large capacity. Several different techniques are covered including spectral shaping, Nyquist wavelength division multiplexing, orthogonal frequency division multiplexing, optical superchannel, tight optical filtering with multisymbol detection using maximum a posteriori probability or maximum likelihood sequence estimation, and coded modulation. In particular, we review several recent experiments transporting Tb/s with b/s/Hz spectral efficiency over transoceanic distance.
Autors: Cai, J.-X.;
Appeared in: Journal of Lightwave Technology
Publication date: Dec 2012, volume: 30, issue:24, pages: 3845 - 3856
Publisher: IEEE
 
» 1880-nm Broadband ASE Generation With Bismuth–Thulium Codoped Fiber
Abstract:
A broadband amplified spontaneous emission (ASE) generation in 1880-nm region is demonstrated by employing a newly developed single-mode Tm–Bi codoped fiber (TBF) in conjunction with 793-nm pumping for the first time. The TBF was obtained by drawing a preform, which was fabricated using a deposition of porous layer by the modified chemical vapor deposition (MCVD) process in conjunction with solution doping technique. The highest and concentrations of 0.35 wt.% and 0.9 wt.%, respectively, were successfully achieved to generate ASE centered at 1880-nm region. The ASE peaked at 47.2 dBm with 3-dB spectral width ranging from 1817 to 1984 nm with 1.0-m-long TBF and 200-mW 793-nm pump power, which was generated due to the transition of thulium ions from to with some assistance from bismuth to thulium ion energy transfer. The use of a secondary pump of 1550 nm is also shown to improve the ASE generation.
Autors: Halder, A.;Paul, M. C.;Harun, S. W.;Ali, S. M. M.;Saidin, N.;Damanhuri, S. S. A.;Ahmad, H.;Das, S.;Pal, M.;Bhadra, S. K.;
Appeared in: IEEE Photonics Journal
Publication date: Dec 2012, volume: 4, issue:6, pages: 2176 - 2181
Publisher: IEEE
 
» 2 MeV electron irradiation effects on the electrical characteristics of metal-oxide-silicon capacitors with atomic layer deposited Al2O3, HfO2 and nanolaminated dielectrics
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Highlights

Appeared in: Solid-State Electronics
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» 2012 Illinois Nanotechnology Report: A Road Map for Economic Development
Abstract:
Nanotechnology has experienced rapid growth over the past 30 years. Since the invention of the scanning tunneling microscope and atomic force microscope in the 1980s, researchers have made exciting discoveries and business professionals have identified the commercial possibilities of nanotechnology. While many people remain unaware of nanotechnology and its applications, these breakthroughs have already made a permanent impression.
Autors: Fetters, E.;
Appeared in: IEEE Nanotechnology Magazine
Publication date: Dec 2012, volume: 6, issue:4, pages: 14 - 17
Publisher: IEEE
 
» 2012 list of reviewers for Automatica
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Autors:
Appeared in: Automatica
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» 2012 WIE Committee Members
Abstract:
Autors: Causer, C.;
Appeared in: IEEE Women in Engineering Magazine
Publication date: Dec 2012, volume: 6, issue:2, pages: 4 - 4
Publisher: IEEE
 
» 2012 Zucker Design Contest Winners [Education Department News]
Abstract:
Autors: Sottile, J.;
Appeared in: IEEE Industry Applications Magazine
Publication date: Dec 2012, volume: 18, issue:6, pages: 85 - 86
Publisher: IEEE
 
» 3-D Adaptive Nonlinear Complex-Diffusion Despeckling Filter
Abstract:
This work aims to improve the process of speckle noise reduction while preserving edges and other relevant features through filter expansion from 2-D to 3-D. Despeckling is very important for data visual inspection and as a preprocessing step for other algorithms, as they are usually notably influenced by speckle noise. To that intent, a 3-D approach is proposed for the adaptive complex-diffusion filter. This 3-D iterative filter was applied to spectral-domain optical coherence tomography medical imaging volumes of the human retina and a quantitative evaluation of the results was performed to allow a demonstration of the better performance of the 3-D over the 2-D filtering and to choose the best total diffusion time. In addition, we propose a fast graphical processing unit parallel implementation so that the filter can be used in a clinical setting.
Autors: Rodrigues, P.;Bernardes, R.;
Appeared in: IEEE Transactions on Medical Imaging
Publication date: Dec 2012, volume: 31, issue:12, pages: 2205 - 2212
Publisher: IEEE
 
» 3-D modeling and analysis of meander-line-coil surface wave EMATs
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Autors:
Appeared in: Mechatronics
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» 355, 532, and 1064 nm picosecond laser interaction with grass tissues
Abstract:
In this article, we investigate how 355, 532, and 1064 nm picosecond lasers interact with grass tissues. We have identified five interaction regimes, and based on this classification, interaction maps have been constructed from a systematic experiment. The optical properties of light absorbing grass constituents are studied theoretically in order to understand how and how much light is absorbed by grass tissues. Scanning electron microscopy and optical microscopy are employed for observing morphological and structural changes of grass tissues. To the best of the authors’ knowledge, this is the first investigation into laser interaction with plant leaves and reveals some fundamental findings regarding how a laser interacts with grass tissues and how plant leaves can be processed using lasers.
Autors: Kim, Jaehun;Ki, Hyungson;
Appeared in: Journal of Applied Physics
Publication date: Dec 2012, volume: 112, issue:11, pages: 114908 - 114908-9
Publisher: IEEE
 
» 35th ERF: Progress in Rotorcraft Research
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Autors:
Appeared in: Aerospace Science and Technology
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» 3D modified unitary matrix pencil method with automatic grouping of unknown parameters of far field signals
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Appeared in: Digital Signal Processing
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» 3D numerical model of the electrostatic coating process with moving objects using a moving mesh
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Highlights

Appeared in: Journal of Electrostatics
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» 400G WDM Transmission on the 50 GHz Grid for Future Optical Networks
Abstract:
We review the recent technology advancements related to the transmission of 400Gb/s, wavelength-division-multiplexed channels for optical networks based on the standard 50 GHz grid. We discuss the enabling modulation, coding, and line system technologies, as well as the existing challenges. Specifically, these technologies include time-domain hybrid 32-64 quadrature amplitude modulation, nearly ideal digital Nyquist pulse shaping, improved channel bandwidth management methods such as end-to-end carrier frequency control and distributed compensation of filtering effects arising from reconfigurable optical add/drop multiplexers, distributed Raman amplification, and powerful forward error correction. We demonstrate 400G transmission on the standard 50 GHz grid over meaningful transmission reach for regional and metropolitan applications. However, further studies are needed to fully understand the potential for meeting the requirements of long-haul transmission applications.
Autors: Zhou, X.;Nelson, L. E.;
Appeared in: Journal of Lightwave Technology
Publication date: Dec 2012, volume: 30, issue:24, pages: 3779 - 3792
Publisher: IEEE
 
» 5-11GHz CMOS PA with 158.941ps group delay and low power using current-reused technique
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Autors:
Appeared in: AEU - International Journal of Electronics and Communications
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» 5R 2dof parallel kinematic manipulator - A multidisciplinary test case in mechatronics
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Appeared in: Mechatronics
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» 6-DoF miniature maglev positioning stage for application in haptic micro-manipulation
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Highlights

Appeared in: Mechatronics
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» 60-GHz transmit/receive switch using a p-n diode and MOS transistors in 130-nm CMOS
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Highlights

Appeared in: Solid-State Electronics
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» 6 128-Gb/s Nyquist-WDM PDM-16QAM Generation and Transmission Over 1200-km SMF-28 With SE of 7.47 b/s/Hz
Abstract:
The Nyquist wavelength-division multiplexing technique enable a solution to achieve high spectral efficiency in long-haul transmission system. Compare to polarization division multiplexing quadrature-phase-shift-keying, even high-level modulation scheme such as polarization division multiplexing 16-quadrature-amplitude-modulation is much more sensitive to intra-channel noise and inter-channel linear crosstalk caused by Nyquist wavelength-division multiplexing. We experimentally demonstrated the generation and transmission of the 6 128-Gb/s Nyquist wavelength-division multiplexing sixteen quadrature amplitude modulation signal over 1200-km single-mode fiber (SMF)-28 with Erbium-doped fiber amplifier only amplification with a net SE of 7.47 b/s/Hz, which is so far, to our knowledge, the highest SE for the signal with the bit rate above 100-Gb/s using the polarization-division multiplexing 16-quadrature-amplitude-modulation format. This experiment was successfully enabled by digital-signal-processing (DSP) pre-equalization of transmitter-side impairments and DSP post-equalization of the channel and receiver-side impairments. Nyquist-band is considered in the pre- equalization to enhance the tolerance of the polarization-division multiplexing 16-quadrature-amplitude-modulation to the aggressive spectral shaping. The bit error rate for each of the 6 channels is smaller than the limitation of the forward-error-correction limit of after 1200-km SMF-28 transmission.
Autors: Dong, Z.;Li, X.;Yu, J.;Chi, N.;
Appeared in: Journal of Lightwave Technology
Publication date: Dec 2012, volume: 30, issue:24, pages: 4000 - 4005
Publisher: IEEE
 
» 8th IEEE International Conference on Automation Science and Engineering (CASE) [Society News]
Abstract:
Autors: Choi, H.R.;
Appeared in: IEEE Robotics & Automation Magazine
Publication date: Dec 2012, volume: 19, issue:4, pages: 96 - 97
Publisher: IEEE
 
» Restoration of -Decoded Images Via Soft-Decision Estimation
Abstract:
The -constrained image coding is a technique to achieve substantially lower bit rate than strictly (mathematically) lossless image coding, while still imposing a tight error bound at each pixel. However, this technique becomes inferior in the distortion metric if the bit rate decreases further. In this paper, we propose a new soft decoding approach to reduce the distortion of -decoded images and retain the advantages of both minmax and least-square approximations. The soft decoding is performed in a framework of image restoration that exploits the tight error bounds afforded by the -constrained coding and employs a context modeler of quantization errors. Experimental results demonstrate that the -constrained hard decoded images can be restored to gain more than 2 dB in peak signal-to-noise ratio PSNR, while still retaining tight error bounds on every single pixel. The new soft decoding technique can even outperform JPEG 2000 (a state-of-the-art encoder-optimized image codec) for bit rates higher than 1 bpp, a critical rate region for applications of near-lossless image compression. All the coding gains are made without increasing the encoder complexity as the heavy computations to gain coding efficiency are delegated to the decoder.
Autors: Zhou, J.;Wu, X.;Zhang, L.;
Appeared in: IEEE Transactions on Image Processing
Publication date: Dec 2012, volume: 21, issue:12, pages: 4797 - 4807
Publisher: IEEE
 
» -Representation and Applications to Generalized Lyapunov Equations and Linear Stochastic Systems
Abstract:
This paper introduces an -representation method to express an 1 vector as . Based on the introduced -representation approach, several topics are extensively discussed, including the generalized Lyapunov equations (GLEs) arising from stochastic control, stochastic observability, generalized -stability and -stabilization, weak stability, and stabilization. A necessary and sufficient condition for the existence and uniqueness of the symmetric and skew-symmetric solutions of GLEs is presented, respectively. Moreover, the solution structure of GLEs is also clarified. Through the -representation method, several necessary and sufficient conditions are also obtained for stochastic observability, generalized -stability and -stabilization, weak stability, and stabilization.
Autors: Zhang, W.;Chen, B.-S.;
Appeared in: IEEE Transactions on Automatic Control
Publication date: Dec 2012, volume: 57, issue:12, pages: 3009 - 3022
Publisher: IEEE
 
» -Angle Object Coverage Problem in a Wireless Sensor Network
Abstract:
One of the fundamental issues in sensor networks is the coverage problem, which reflects how well a field is monitored or tracked by sensors. Various versions of this problem have been studied, such as object, area, barrier, and hole coverage problems. In this paper, we define a new -angle object coverage problem in a wireless sensor network. Each sensor can only cover a limited angle and range, but can freely rotate to any direction to cover a particular angle. Given a set of sensors and a set of objects at known locations, the goal is to use the least number of sensors to -angle-cover the largest number of objects such that each object is monitored by at least sensors satisfying some angle constraint. We propose centralized and distributed polynomial-time algorithms to solve this problem. Simulation results show that our algorithms can be effective in maximizing coverage of objects. A prototype system is developed to demonstrate the usefulness of angle coverage.
Autors: Tseng, Y.-C.;Chen, P.-Y.;Chen, W.-T.;
Appeared in: IEEE Sensors Journal
Publication date: Dec 2012, volume: 12, issue:12, pages: 3408 - 3416
Publisher: IEEE
 
» A 0.7V input output-capacitor-free digitally controlled low-dropout regulator with high current efficiency in 0.35?m CMOS technology
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Autors:
Appeared in: Microelectronics Journal
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A 10GHz wideband VCO with low KVCO variation
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Appeared in: Microelectronics Journal
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A 12.5Gb/s 6.6mW receiver with analog equalizer and 1-tap DFE
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Appeared in: Microelectronics Journal
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A 15fJ/conversion-step 8-bit 50MS/s asynchronous SAR ADC with efficient charge recycling technique
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Appeared in: Microelectronics Journal
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A 2-Axis Optical Force–Torque Fingertip Sensor for Dexterous Grasping Using Linear Polarizers
Abstract:
This paper presents a two-axis force/torque sensor (one force and one torque) that uses light-intensity modulation techniques to measure the contact force and torque between a robotic finger and an object. The sensor has a diameter of and a height of . The sensor incorporates linearly aligned fiber-optic cables, linear polarizers, and nitinol wire strips into a rigid structure made of plastic. The nitinol wire strips allow certain parts of the structure to deform under applied forces. A model of the sensor is presented, and calibration experiments were conducted, validating the model. The sensor was also incorporated into the fingertip of a Barrett Hand, and experiments were conducted on three objects, i.e., a power adapter, a partially filled plastic bottle, and a curved paper punch to identify the sensor's response to different surface profiles. The sensor's data are also compared with data from a Nano17 force and torque sensor, and the results from the two sensors are discussed.
Autors: Sargeant, R.;Seneviratne, L. D.;Althoefer, K.;
Appeared in: IEEE Transactions on Instrumentation and Measurement
Publication date: Dec 2012, volume: 61, issue:12, pages: 3363 - 3377
Publisher: IEEE
 
» A 2.8-mm Imaging Probe Based On a High-Fill-Factor MEMS Mirror and Wire-Bonding-Free Packaging for Endoscopic Optical Coherence Tomography
Abstract:
This paper reports a miniature optical coherence tomography (OCT) probe and high-resolution 3-D OCT imaging results obtained with this side-view probe. The probe is only 2.8 mm in diameter, enabled by a unique high-fill-factor electrothermal MEMS mirror with hidden actuators and a novel wire-bonding-free packaging technique. The MEMS mirror has a large mirror aperture of 1 mm with a chip size of only 1.55 mm 1.7 mm 0.5 mm. The fabricated device achieves large 2-D scan optical angles up to 46 at only 4.8 V. The specific time-domain OCT system utilized is detailed, and the assembled side-view probe demonstrates multiple high-resolution 3-D OCT imaging results that demonstrate detailed images of a mouse ear and images detecting the presence of tumor cells, and the contrast with a normal tissue is qualitatively analyzed. [2011-0369]
Autors: Samuelson, S. R.;Wu, L.;Sun, J.;Sun, S.;Sorg, B. S.;Xie, H.;
Appeared in: Journal of Microelectromechanical Systems
Publication date: Dec 2012, volume: 21, issue:6, pages: 1291 - 1302
Publisher: IEEE
 
» A 3-D Nonhomogeneous FE Model of Human Fingertip Based on MRI Measurements
Abstract:
A 3-D nonhomogeneous finite-element (FE) dynamic model of a primate fingertip is developed in this paper based on magnetic resonance (MR) imaging measurements for better understanding the mechanism of human finger sensation. The geometries of a human fingertip are measured using an MR system, and a series of 2-D images is obtained. Utilizing a boundary tracking method, boundaries of the fingertip and distal phalanx are tracked from each image slice and a set of boundary nodes is generated to construct a 3-D tetrahedral mesh of the fingertip. The 3-D mesh is then utilized to formulate a nonhomogeneous FE dynamic model for simulating the fingertip behaviors. The constitutive model, which consists of elastic and viscous elements, is employed to govern the dynamic behaviors of individual tetrahedral FE. The FE model is further extended to deal with contact interaction between the fingertip and an external instrument. Differing with conventional fingertip models, the model presented in this paper is able to not only better represent internal and external geometries of a human fingertip but also take the tissue viscosity into consideration. Simulation and experiments are performed with both a human finger and a fingertip phantom under different indentation operations. We found that the Voigt model can simulate the force behaviors of a fingertip phantom but has difficulty to reproduce the force relaxation behavior of a human fingertip. We have therefore introduced a parallel five-parameter physical model to solve this problem.
Autors: Wang, Z.;Wang, L.;Ho, V. A.;Morikawa, S.;Hirai, S.;
Appeared in: IEEE Transactions on Instrumentation and Measurement
Publication date: Dec 2012, volume: 61, issue:12, pages: 3147 - 3157
Publisher: IEEE
 
» A 3-D Ultrasound Robotic Prostate Brachytherapy System With Prostate Motion Tracking
Abstract:
This paper describes a new 3-D ultrasound robotic prostate brachytherapy system. It uses a stationary 3-D ultrasound probe rigidly fixed to a robotic needle insertion mechanism. The novelty of the system is its ability to track prostate motion intraoperatively to allow the dose planning and needle trajectories or depths to be adapted to take into account these motions. Prostate tracking is done using a fast 3-D ultrasound registration algorithm previously validated for biopsy guidance. The 7-degree-of-freedom (7-DOF) robot and ultrasound probe are calibrated together with an accuracy of 0.9 mm, allowing the needles to be precisely inserted to the seed targets chosen in the reference ultrasound image. Experiments were conducted on mobile, deformable synthetic prostate phantoms using a prototype laboratory system. Results showed that, with prostate motions of up to 7 mm, the system was able to reach the chosen targets with less than 2-mm accuracy in the needle insertion direction. This measured accuracy included extrinsic measurement errors of up to 1.1 mm. A preliminary cadaver feasibility study was also described in preparation for more realistic experimentation of the system.
Autors: Hungr, N.;Baumann, M.;Long, J.-A.;Troccaz, J.;
Appeared in: IEEE Transactions on Robotics
Publication date: Dec 2012, volume: 28, issue:6, pages: 1382 - 1397
Publisher: IEEE
 
» A 3.2ppm/C curvature-compensated bandgap reference with wide supply voltage range
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Autors:
Appeared in: Microelectronics Journal
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A 33-Megapixel 120-Frames-Per-Second 2.5-Watt CMOS Image Sensor With Column-Parallel Two-Stage Cyclic Analog-to-Digital Converters
Abstract:
A 33-megapixel 120-frames/s (fps) CMOS image sensor has been developed. The 7808 4336 pixel 2.8- pixel pitch CMOS image sensor with 12-bit, column-parallel, two-stage, cyclic analog-to-digital converters (ADCs) and 96 parallel low-voltage differential signaling output ports operates at a data rate of 51.2 Gb/s. The pipelined operation of the two cyclic ADCs reduces the conversion time. This ADC architecture also effectively lowers the power consumption by exploiting the amplifier function of the cyclic ADC. The CMOS image sensor implemented with 0.18- technology exhibits a sensitivity of 0.76 without a microlens and a random noise of 5.1 with no column amplifier gain and 3.0 with a gain of 7.5 at 120 fps while dissipating only 2.45 and 2.67 W, respectively.
Autors: Kitamura, K.;Watabe, T.;Sawamoto, T.;Kosugi, T.;Akahori, T.;Iida, T.;Isobe, K.;Watanabe, T.;Shimamoto, H.;Ohtake, H.;Aoyama, S.;Kawahito, S.;Egami, N.;
Appeared in: IEEE Transactions on Electron Devices
Publication date: Dec 2012, volume: 59, issue:12, pages: 3426 - 3433
Publisher: IEEE
 
» A 5.4/2.7/1.62-Gb/s Receiver for DisplayPort Version 1.2 With Multi-Rate Operation Scheme
Abstract:
A 5.4/2.7/1.62-Gb/s multi-rate receiver is designed for DisplayPort version 1.2. A dual-mode binary phase detector supports half-rate and quarter-rate phase detections to enable the multi-rate operation of the receiver without a wide-tuning VCO. In addition, a low voltage-drop active inductor with a voltage booster is implemented in the dual-mode binary phase detector to extend the bandwidth and reduce the power consumption. The voltage booster generates 1.904 V from 1.2-V supply with fast voltage generation time and small area consumption. A bandwidth controllable equalizer is proposed to optimize channel loss compensation even if the Nyquist frequency of input data changes. The BER for all input data rates is less than 10 for 2 -1 PRBS and the measured jitter characteristics indicate that the proposed receiver exceeds the DisplayPort jitter tolerance specification. The recovered 1.35-GHz clock shows the peak-to-peak jitter of 29.9 ps and the rms jitter of 3.215 ps for 5.4-Gb/s input. The energy efficiency of the CDR circuit in the receiver is 19.3 pJ/bit at 5.4 Gb/s. The receiver occupies 0.672 mm including decoupling capacitors and the CDR core area is 0.44 mm
Autors: Lee, W.-Y.;Hwang, K.-D.;Kim, L.-S.;
Appeared in: IEEE Transactions on Circuits and Systems I: Regular Papers
Publication date: Dec 2012, volume: 59, issue:12, pages: 2858 - 2866
Publisher: IEEE
 
» A 64 64 Pixels UWB Wireless Temporal-Difference Digital Image Sensor
Abstract:
In this paper we present a low power temporal-difference image sensor with wireless communication capability designed specifically for imaging sensor networks. The event-based image sensor features a 64 × 64 pixel array and can also report standard analog intensity images. An ultra-wide-band radio channel allows to transmit digital temporal difference images wirelessly to a receiver with high rates and reduced power consumption. The sensor can wake up the radio when it detects a specific number of pixels intensity modulation, so that only significant frames are communicated. The prototype chip was implemented using a 2-poly 3-metal AMIS 0.5 μ m CMOS process. Power consumption is 0.9 mW for the sensor and 15 mW for radio transmission to distance of 4 m with rates of 1.3 Mbps and 160 fps.
Autors: Shoushun Chen;Wei Tang;Xiangyu Zhang;Culurciello, E.;
Appeared in: IEEE Transactions on Very Large Scale Integration Systems
Publication date: Dec 2012, volume: 20, issue:12, pages: 2232 - 2240
Publisher: IEEE
 
» A 65-nm CMOS Prototype Chip With Monolithic Pixel Sensors and Fast Front-End Electronics
Abstract:
This work is concerned with the design criteria and the experimental characterization of front-end electronics in a 65-nm CMOS technology for the readout of hybrid pixels and of monolithic active pixel sensors using a deep N-well as their collecting electrode. The work presents a summary of the experimental results relevant to a prototype chip, named Apsel65, focusing particularly on the front-end processor features and performance.
Autors: Gaioni, L.;Manghisoni, M.;Ratti, L.;Re, V.;Traversi, G.;
Appeared in: IEEE Transactions on Nuclear Science
Publication date: Dec 2012, volume: 59, issue:6, pages: 3304 - 3311
Publisher: IEEE
 
» A Balancing Act: What Software Practitioners Have to Say about Technical Debt
Abstract:
An interview study involving 35 practitioners from a variety of domains aimed to characterize technical debt at the ground level to find out how software practitioners perceive it. The study also aimed to understand the context in which technical debt occurs, including its causes, symptoms, and effects. In addition, the study focused on how practitioners currently deal with technical debt. This analysis paints a picture of a large, complex balancing act of various short- and long-term concerns. The Web Extra gives the interview questions used by Erin Lim, Nitin Taksande, and Carolyn Seaman.
Autors: Lim, E.;Taksande, N.;Seaman, C.;
Appeared in: IEEE Software
Publication date: Dec 2012, volume: 29, issue:6, pages: 22 - 27
Publisher: IEEE
 
» A Behavior Model of an On-Chip High Voltage Generator for Fast, System-Level Simulation
Abstract:
This brief discusses modeling of a high-voltage generator, including a charge pump circuit and a regulator for accelerating system-level simulations. Event-driven simulators become slow when hard switching frequently occurs to enable charge pump circuits even with a conventional model. A current mirror is added to the pump model and is connected to an output node of a comparator in the voltage detector to make every node in the feedback loop fully analog. Simulation results show that the simulation time for voltage generators' system is reduced by a factor of about 10 with an error of 5% in comparison with the conventional model.
Autors: Tanzawa, T.;
Appeared in: IEEE Transactions on Very Large Scale Integration Systems
Publication date: Dec 2012, volume: 20, issue:12, pages: 2351 - 2355
Publisher: IEEE
 
» A behaviour sequencing and composition architecture based on ontologies for entertainment humanoid robots
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Appeared in: Robotics and Autonomous Systems
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A behaviour-based control architecture for heterogeneous modular, multi-configurable, chained micro-robots
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Appeared in: Robotics and Autonomous Systems
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A Bio-Inspired Resource-Saving Approach to Dynamic Client-Server Association
Abstract:
This novel method for client-server association draws inspiration from the nest-building behavior of social insects. It focuses on reducing active, and thus resource-consuming, servers.
Autors: Hildmann, Hanno;Nicolas, S\ébastien;Saffre, Fabrice;
Appeared in: IEEE Intelligent Systems
Publication date: Dec 2012, volume: 27, issue:6, pages: 17 - 25
Publisher: IEEE
 
» A biologically motivated approach towards modular and robust low-level sensor fusion for application in agricultural machinery design
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Appeared in: Computers and Electronics in Agriculture
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A biomimetic underwater microrobot with multifunctional locomotion
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Appeared in: Robotics and Autonomous Systems
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A black box method for solving the complex exponentials approximation problem
Abstract:


Autors:
Appeared in: Digital Signal Processing
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A bounded controller for multirobot navigation while maintaining network connectivity in the presence of obstacles
Abstract:


Autors:
Appeared in: Automatica
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A Capacitive Intrabody Communication Channel from 100 kHz to 100 MHz
Abstract:
Intrabody communication (IBC) uses the human body as a signal transmission medium. In the capacitive coupling IBC approach, the signal is transmitted through the body, and the signal return path is closed through the environment. The received signal level is affected by the orientation of the transmitter with respect to the receiver, the number of ground electrodes connected to the body, the size of the receiver ground plane, and the surrounding environment. In this paper, we present a characterization of the capacitive IBC channel in the frequency range from 100 kHz to 100 MHz, obtained using a network analyzer and a pair of baluns. In order to better understand the transmission path in the frequency range of interest, we analyze the intrabody channel transmission characteristics using different electrode arrangements, test persons, environments, and body positions and movements. The transmission gain increases with frequency for 20 dB/dec and depends on the transmitter to the receiver distance, and the electrode arrangements. For a proper IBC configuration, the variations of the environment, test persons, body positions, and movements affect the transmission gain less than 2 dB.
Autors: Lucev, Z.;Krois, I.;Cifrek, M.;
Appeared in: IEEE Transactions on Instrumentation and Measurement
Publication date: Dec 2012, volume: 61, issue:12, pages: 3280 - 3289
Publisher: IEEE
 
» A Catheterization-Training Simulator Based on a Fast Multigrid Solver
Abstract:
A VR-based simulator helps trainees develop skills for catheterization, a fundamental but difficult procedure in vascular interventional radiology. A deformable model simulates the complicated behavior of guide wires and catheters, using the principle of minimum total potential energy. A fast, stable multigrid solver ensures realistic simulation and real-time interaction. In addition, the system employs geometrically and topologically accurate vascular models based on improved parallel-transport frames, and it implements efficient collision detection. Experiments evaluated the method's stability, the solver's execution time, how well the simulation preserved the catheter's curved tip, and the catheter deformation's realism. An empirical study based on a typical selective-catheterization procedure assessed the system's feasibility and effectiveness.
Autors: Li, Shun;Guo, Jixiang;Wang, Qiong;Meng, Qiang;Chui, Yim-Pan;Qin, Jing;Heng, Pheng-Ann;
Appeared in: IEEE Computer Graphics and Applications
Publication date: Dec 2012, volume: 32, issue:6, pages: 56 - 70
Publisher: IEEE
 
» A Characterization of the Set of Species Trees that Produce Anomalous Ranked Gene Trees
Abstract:
Ranked gene trees, which consider both the gene tree topology and the sequence in which gene lineages separate, can potentially provide a new source of information for use in modeling genealogies and performing inference of species trees. Recently, we have calculated the probability distribution of ranked gene trees under the standard multispecies coalescent model for the evolution of gene lineages along the branches of a fixed species tree, demonstrating the existence of anomalous ranked gene trees (ARGTs), in which a ranked gene tree that does not match the ranked species tree can have greater probability under the model than the matching ranked gene tree. Here, we fully characterize the set of unranked species tree topologies that give rise to ARGTs, showing that this set contains all species tree topologies with five or more taxa, with the exceptions of caterpillars and pseudocaterpillars. The results have implications for the use of ranked gene trees in phylogenetic inference.
Autors: Degnan, James H.;Rosenberg, Noah A.;Stadler, Tanja;
Appeared in: IEEE/ACM Transactions on Computational Biology and Bioinformatics
Publication date: Dec 2012, volume: 9, issue:6, pages: 1558 - 1568
Publisher: IEEE
 
» A Closed-Form Analytical Transient Response Model for On-Chip Distortionless Interconnect
Abstract:
This paper presents a closed-form analytical transient response model for an on-chip distortionless interconnect considering resistance/capacitance loads via solving a semi-infinite transmission line equation. As verified by the simulation results, this transient response model has high accuracy, which could be used to derive the characteristics of the transmitted signal for facilitating the design of the distortionless interconnect. Based on the model, the steady-state output voltage and the delay related to the interconnect have been analyzed.
Autors: Liu, T. C.;Kuo, J. B.;Zhang, S.;
Appeared in: IEEE Transactions on Electron Devices
Publication date: Dec 2012, volume: 59, issue:12, pages: 3186 - 3192
Publisher: IEEE
 
» A CMOS 0.13 m, 5 Gb/s Laser Driver for High Energy Physics Applications
Abstract:
The GigaBit Laser Driver (GBLD) is a radiation tolerant ASIC designed to drive both edge emitting lasers and VCSELs at data rates up to 5 Gb/s. It is part of the GigaBit Transceiver (GBT) and Versatile Link projects, which are designing a bi-directional optical data transmission system capable of operating in the radiation environment of a typical HEP experiment. The GBLD can provide laser diode modulation currents up to 24 mA and laser bias currents up to 43 mA. Pre- and de-emphasis functions are implemented to compensate for high external capacitive loads and asymmetric laser response. The chip, designed in a 0.13 m CMOS technology, is powered by a single 2.5 V power supply and can be programmed via an interface.
Autors: Mazza, G.;Gui, P.;Moreira, P.;Rivetti, A.;Soos, C.;Troska, J.;Wyllie, K.;
Appeared in: IEEE Transactions on Nuclear Science
Publication date: Dec 2012, volume: 59, issue:6, pages: 3229 - 3234
Publisher: IEEE
 
» A collaborative and integrated platform to support distributed manufacturing system using a service-oriented approach based on cloud computing paradigm
Abstract:


Autors:

Highlights

Appeared in: Robotics and Computer-Integrated Manufacturing
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A combined algorithm for simulating fiber lasers based on the shooting and relaxation methods
Abstract:


Autors:

Highlights

Appeared in: Optical Fiber Technology
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A combined hard x-ray photoelectron spectroscopy and electrical characterisation study of metal/SiO2/Si(100) metal-oxide-semiconductor structures
Abstract:
Combined hard x-ray photoelectron spectroscopy (HAXPES) and electrical characterisation measurements on identical Si based metal-oxide-semiconductor structures have been performed. The results obtained indicate that surface potential changes at the Si/SiO2 interface due to the presence of a thin Al or Ni gate layer can be detected with HAXPES. Changes in the Si/SiO2 band bending at zero gate voltage and the flat band voltage for the case of Al and Ni gate layers derived from the silicon core levels shifts observed in the HAXPES spectra are in agreement with values derived from capacitance-voltage measurements.
Autors: Walsh, Lee A.;Hughes, Greg;Hurley, Paul K.;Lin, Jun;Woicik, Joseph C.;
Appeared in: Applied Physics Letters
Publication date: Dec 2012, volume: 101, issue:24, pages: 241602 - 241602-4
Publisher: IEEE
 
» A Compact and Low-Loss MMI Coupler Fabricated With CMOS Technology
Abstract:
We present the design, fabrication, and measurement of a compact and low-loss multimode interference (MMI) coupler based on the silicon nanowire waveguide. The device is carefully designed to achieve both a good performance and a compact size by using the mode matching method. The device is fabricated on silicon-on-insulator (SOI) with 0.13- CMOS technology. By measuring the MMI coupler with a cascaded configuration, a very low excess loss of 0.06 dB at the wavelength of 1550 nm is obtained. The device can also work well for a wide wavelength band. The present MMI coupler is very compact with a footprint of for the multimode region.
Autors: Sheng, Z.;Wang, Z.;Qiu, C.;Li, L.;Pang, A.;Wu, A.;Wang, X.;Zou, S.;Gan, F.;
Appeared in: IEEE Photonics Journal
Publication date: Dec 2012, volume: 4, issue:6, pages: 2272 - 2277
Publisher: IEEE
 
» A comparative analysis of Spearman's rho and Kendall's tau in normal and contaminated normal models
Abstract:


Autors:

Highlights

Appeared in: Signal Processing
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A Comprehensive Approach to Naming and Accessibility in Refactoring Java Programs
Abstract:
Automated tool support for refactoring is now widely available for mainstream programming languages such as Java. However, current refactoring tools are still quite fragile in practice and often fail to preserve program behavior or compilability. This is mainly because analyzing and transforming source code requires consideration of many language features that complicate program analysis, in particular intricate name lookup and access control rules. This paper introduces J_L, a lookup-free, access control-free representation of Java programs. We present algorithms for translating Java programs into J_L and vice versa, thereby making it possible to formulate refactorings entirely at the level of J_L and to rely on the translations to take care of naming and accessibility issues. We demonstrate how complex refactorings become more robust and powerful when lifted to J_L. Our approach has been implemented using the JastAddJ compiler framework, and evaluated by systematically performing two commonly used refactorings on an extensive suite of real-world Java applications. The evaluation shows that our tool correctly handles many cases where current refactoring tools fail to handle the complex rules for name binding and accessibility in Java.
Autors: Sch\äfer, Max;Thies, Andreas;Steimann, Friedrich;Tip, Frank;
Appeared in: IEEE Transactions on Software Engineering
Publication date: Dec 2012, volume: 38, issue:6, pages: 1233 - 1257
Publisher: IEEE
 
» A comprehensive study of channel hot-carrier degradation in short channel MOSFETs with high-k dielectrics
Abstract:


Autors:

Graphical abstract

image

Appeared in: Microelectronic Engineering
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A concurrent dual-band folded-cascode mixer using a LC-tank biasing circuit
Abstract:


Autors:
Appeared in: Microelectronics Journal
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A Constrained Evolutionary Computation Method for Detecting Controlling Regions of Cortical Networks
Abstract:
Controlling regions in cortical networks, which serve as key nodes to control the dynamics of networks to a desired state, can be detected by minimizing the eigenratio R and the maximum imaginary part sigma of an extended connection matrix. Until now, optimal selection of the set of controlling regions is still an open problem and this paper represents the first attempt to include two measures of controllability into one unified framework. The detection problem of controlling regions in cortical networks is converted into a constrained optimization problem (COP), where the objective function R is minimized and sigma is regarded as a constraint. Then, the detection of controlling regions of a weighted and directed complex network (e.g., a cortical network of a cat), is thoroughly investigated. The controlling regions of cortical networks are successfully detected by means of an improved dynamic hybrid framework (IDyHF). Our experiments verify that the proposed IDyHF outperforms two recently developed evolutionary computation methods in constrained optimization field and some traditional methods in control theory as well as graph theory. Based on the IDyHF, the controlling regions are detected in a microscopic and macroscopic way. Our results unveil the dependence of controlling regions on the number of driver nodes l and the constraint r. The controlling regions are largely selected from the regions with a large in-degree and a small out-degree. When r=+ infty, there exists a concave shape of the mean degrees of the driver nodes, i.e., the regions with a large degree are of great importance to the control of the networks when l is small and the regions with a small degree are helpful to control the networks when l increases. When r=0, the mean degrees of the driver nodes increase as a function of l. We find that controlling sigma is becoming more important in controlling a cortical network with increasing l. The methods and results of detecting controlling regio- s in this paper would promote the coordination and information consensus of various kinds of real-world complex networks including transportation networks, genetic regulatory networks, and social networks, etc.
Autors: Tang, Yang;Wang, Zidong;Gao, Huijun;Swift, Stephen;Kurths, J\ürgen;
Appeared in: IEEE/ACM Transactions on Computational Biology and Bioinformatics
Publication date: Dec 2012, volume: 9, issue:6, pages: 1569 - 1581
Publisher: IEEE
 
» A Contemporary Look at Saltzer and Schroeder's 1975 Design Principles
Abstract:
In 1975, Jerome Saltzer and Michael Schroeder published "The Protection of Information in Computer Systems," which outlined a series of design principles for secure systems. Some principles, like separation of privilege and least privilege, have become staples of information security practice. Other principles, like simplicity and complete mediation, have failed to thrive. Attempts to codify information security principles for general practice have also failed to thrive. With a few exceptions, modern textbooks either entirely omit lists of principles or present only the 1975 list. Although such lists might provide useful, if incomplete, guidelines for practitioners, their principal value might be in teaching students the fundamental concepts of information security.
Autors: Smith, Richard E.;
Appeared in: IEEE Security & Privacy
Publication date: Dec 2012, volume: 10, issue:6, pages: 20 - 25
Publisher: IEEE
 
» A Control-Oriented Notion of Finite State Approximation
Abstract:
We consider the problem of approximating discrete-time plants with finite-valued sensors and actuators by deterministic finite memory systems for the purpose of certified-by-design controller synthesis. Building on ideas from robust control, we propose a control-oriented notion of finite state approximation for these systems, demonstrate its relevance to the control synthesis problem, and discuss its key features.
Autors: Tarraf, D. C.;
Appeared in: IEEE Transactions on Automatic Control
Publication date: Dec 2012, volume: 57, issue:12, pages: 3197 - 3202
Publisher: IEEE
 
» A critical review of partial-discharge models
Abstract:
Partial-discharge (PD) measurements in compliance with the standard IEC 60270 are based on the main quantity apparent charge. This term is deduced from a simple PD model comprising a capacitive network. However, from a physical point of view, a PD defect cannot be represented by a capacitance, as argued by Pedersen and his coworkers. As an alternative, Pedersen proposed a field theoretical approach that is based on a dipole model. This more sophisticated concept has been ignored in the past, whereas the capacitive PD model is accepted also nowadays. Apparently, the reason for that is that the charge transfer can easily be calculated for the capacitive equivalent circuit, which is not the case if the field theoretical approach based on the dipole concept is adopted. As will be reported in this article, the analysis can substantially be simplified if instead of gaseous discharges in spherical, elliptical, or cylindrical cavities, as commonly regarded in the relevant literature, the establishment of a dipole moment in a uniform field between solid dielectric layers is considered.
Autors: Lemke, E.;
Appeared in: IEEE Electrical Insulation Magazine
Publication date: Dec 2012, volume: 28, issue:6, pages: 11 - 16
Publisher: IEEE
 
» A decision support system for design of mass production machining lines composed of stations with rotary or mobile table
Abstract:


Autors:

Highlights

Appeared in: Robotics and Computer-Integrated Manufacturing
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A Depth-Aware Character Generator for 3DTV
Abstract:
In 3DTV, it is known that video captions and graphics should be inserted at proper scene depth positions, to prevent possible viewing discomfort. We propose a character generator that automatically analyzes the scene disparities and determines the proper depth of the graphic object to be inserted. The challenge is that the disparity range estimation from feature correspondences is severely affected even by a few outliers, whereas naıuml;ve SURF or BRIEF matching produces a considerable amount of outliers. We propose a multiple-hypothesis feature matching algorithm that considers the disparity coherence between adjacent features, with which most mismatches can be removed according to the reliability aggregated from the neighboring features. To estimate the accurate disparity range from the feature correspondences, a disparity histogram is computed and filtered by a space-time kernel to suppress the effect of incorrect disparities. We also propose the disparity-depth conversion in the asymmetric view frustum which is used for the stereoscopic rendering of graphics. Experimental results show that a 3D graphic object is successfully inserted at the desired depth which is obtained from the proposed disparity range estimation and disparity-depth conversion.
Autors: Oh, J.;Sohn, K.;
Appeared in: IEEE Transactions on Broadcasting
Publication date: Dec 2012, volume: 58, issue:4, pages: 523 - 532
Publisher: IEEE
 
» A design automation system for CMOS analog integrated circuits using New Hybrid Shuffled Frog Leaping Algorithm
Abstract:


Autors:
Appeared in: Microelectronics Journal
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A design paradigm for mechatronic systems
Abstract:


Autors:
Appeared in: Mechatronics
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A detailed analysis of a new 3D spatial feature vector for indoor scene classification
Abstract:


Autors:

Highlights

Appeared in: Robotics and Autonomous Systems
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A Developmental Approach to Structural Self-Organization in Reservoir Computing
Abstract:
Reservoir computing (RC) is a computational framework for neural network based information processing. Little work, however, has been conducted on adapting the structure of the neural reservoir. In this paper, we propose a developmental approach to structural self-organization in reservoir computing. More specifically, a recurrent spiking neural network is adopted for building up the reservoir, whose synaptic and structural plasticity are regulated by a gene regulatory network (GRN). Meanwhile, the expression dynamics of the GRN is directly influenced by the activity of the neurons in the reservoir. We term this proposed model as GRN-regulated self-organizing RC (GRN-SO-RC). Contrary to a randomly initialized and fixed structure used in most existing RC models, the structure of the reservoir in the GRN-SO-RC model is self-organized to adapt to the specific task using the GRN-based mechanism. To evaluate the proposed model, experiments have been conducted on several benchmark problems widely used in RC models, such as memory capacity and nonlinear auto-regressive moving average. In addition, we apply the GRN-SO-RC model to solving complex real-world problems, including speech recognition and human action recognition. Our experimental results on both the benchmark and real-world problems demonstrate that the GRN-SO-RC model is effective and robust in solving different types of problems.
Autors: Yin, J.;Meng, Y.;Jin, Y.;
Appeared in: IEEE Transactions on Autonomous Mental Development
Publication date: Dec 2012, volume: 4, issue:4, pages: 273 - 289
Publisher: IEEE
 
» A diffusion and curvature dependent surface elastic model with application to stress analysis of anode in lithium ion battery
Abstract:


Autors:
Appeared in: International Journal of Engineering Science
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A Distributed Circuit Model for Side-Coupled Nanoplasmonic Structures With Metal–Insulator–Metal Arrangement
Abstract:
A transmission line model is developed for coupled plasmonic metal-insulator-metal (MIM) waveguides. In the proposed model coupling between electric fields of two plasmonic waveguides is modeled by distributed mutual capacitor while distributed mutual inductor accounts for magnetic field coupling. These mutual elements are determined using propagation constants of supermodes of coupled waveguides. The model is applied to analyze coupled line directional coupler and side-coupled rectangular resonators. The effectiveness of the model is assessed using fully numerical finite-difference time-domain (FDTD) technique. The results have excellent agreement with the numerical methods.
Autors: Rezaei, M.;Jalaly, S.;Miri, M.;Khavasi, A.;Fard, A.P.;Mehrany, K.;Rashidian, B.;
Appeared in: IEEE Journal of Selected Topics in Quantum Electronics
Publication date: Dec 2012, volume: 18, issue:6, pages: 1692 - 1699
Publisher: IEEE
 
» A distributed control framework for motion coordination of teams of autonomous agricultural vehicles
Abstract:


Autors:

Highlights

Appeared in: Biosystems Engineering
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A Distributed-Centralized Scheme for Short- and Long-Term Spectrum Sharing with a Random Leader in Cognitive Radio Networks
Abstract:
In Cognitive Radio Networks (CRNs), Primary Users (PUs) can share their idle spectra with Secondary Users (SUs) under certain mechanisms. In this paper, we propose a distributed-centralized and incentive-aware spectrum sharing scheme for the multiple-PU scenario, which introduces a Random Leader who is elected randomly from SUs or PUs. The distributed aspect of our scheme lies in that it requires no central control entities, which can be independently implemented within a distributed spectrum market. The centralized aspect is that the leader draws up and assigns the socially optimal contracts for all PUs and SUs in a centralized manner, which maximizes the throughput of the whole network and attains the economic robustness (including Incentive Compatibility and Individual Rationality). Analysis shows that the proposed scheme takes in the advantages of both centralized and distributed schemes but overcomes their weaknesses. We use the proposed scheme to study two sharing scenarios: the short-term and the long-term spectrum sharing. The Short-Term Sharing (STS) focuses on distributing PUs' idle spectra within one time slot while the Long-Term Sharing (LTS) considers multiple slots, where the spectrum mobility must be investigated. As an integrated design of both STS and LTS, our scheme not only fulfils SUs' heterogeneous spectrum requirements but also obtains the socially optimal throughput while accounting for both SUs' and PUs' incentives.
Autors: Liang, Qingkai;Han, Sihui;Yang, Feng;Sun, Gaofei;Wang, Xinbing;
Appeared in: IEEE Journal on Selected Areas in Communications
Publication date: Dec 2012, volume: 30, issue:11, pages: 2274 - 2284
Publisher: IEEE
 
» A DOP feedback controlling multi-stage electrical PMD compensator in digital coherent receiver
Abstract:


Autors:

Highlights

Appeared in: Optical Fiber Technology
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A double B1-mode 4-layer laminated piezoelectric linear motor
Abstract:
We report a miniature piezoelectric ultrasonic linear motor that is made of four Pb(Zr,Ti)O3 (PZT) piezoelectric ceramic layers for low-voltage work. The 4-layer piezoelectric laminate works in two orthogonal first-bending modes for producing elliptical oscillations, which are then used to drive a contacting slider into continuous linear motion. Experimental results show that the miniature linear motor (size: 4 ?? 4 ?? 12 mm, weight: 1.7 g) can generate a large driving force of 0.48 N and a linear motion speed of up to 160 mm/s, using a 40 Vpp/mm voltage drive at its resonance frequency of 64.5 kHz. The maximum efficiency of the linear motor is 30%.
Autors: Li, X.;Chen, Z.;Dong, S.;
Appeared in: IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Publication date: Dec 2012, volume: 59, issue:12, pages: 2752 - 2757
Publisher: IEEE
 
» A doubly-fed induction generator test facility for grid fault ride-through analysis
Abstract:
With the increasing concerns over climate change and fossil fuel depletion, exploitation of renewable energy has become paramount in electricity generation. Currently, it is wind energy that is firmly in the spotlight. The last three decades have seen increasing proliferation of wind power generation, and much effort and substantial funding have been directed towards developing larger and better wind turbine (WT) power generation systems. These efforts have led to substantial improvements in turbine blades, turbine generators, drive trains, and control methods. Among all of the technologies used for wind turbine generators, variable speed doubly-fed induction generators (DFIGs) are the dominant installation in medium and large sized WTs. A salient feature of this technology is that the stator is connected to the power grid, and the rotor is fed by back-to-back converters to meet the requirements for variable speed operation. In a DFIG wind turbine generator, rotor speed typically varies by ??30% around the synchronous speed, and an economic advantage is gained from downsized power converters which require only a fraction of the total power of the DFIG.
Autors: Atkinson, D.;Pannell, G.;Cao, W.;Zahawi, B.;Abeyasekera, T.;Jovanovic, M.;
Appeared in: IEEE Instrumentation & Measurement Magazine
Publication date: Dec 2012, volume: 15, issue:6, pages: 20 - 27
Publisher: IEEE
 
» A Dual-Career Academic Couple: Schulz Espouses a Strong Support System [Women to Watch]
Abstract:
Autors: Wax, H.;
Appeared in: IEEE Women in Engineering Magazine
Publication date: Dec 2012, volume: 6, issue:2, pages: 14 - 16
Publisher: IEEE
 
» A dynamic cross-layer routing protocol for Mobile Ad hoc Networks
Abstract:


Autors:
Appeared in: AEU - International Journal of Electronics and Communications
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A dynamic load balancing strategy with the push and pull approaches in DHT networks
Abstract:


Autors:

Graphical abstract

image

Appeared in: Computers & Electrical Engineering
Publication date: Dec 2012
Publisher: Elsevier B.V.
 
» A Fast and Practical Approach to Genotype Phasing and Imputation on a Pedigree with Erroneous and Incomplete Information
Abstract:
HASH(0x4f1716c)
Autors: Pirola, Yuri;Vedova, Gianluca Della;Biffani, Stefano;Stella, Alessandra;Bonizzoni, Paola;
Appeared in: IEEE/ACM Transactions on Computational Biology and Bioinformatics
Publication date: Dec 2012, volume: 9, issue:6, pages: 1582 - 1594
Publisher: IEEE
 

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