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Atomic clocks are the world’s most precise timekeepers. Based on periodic transitions between two electronic states of an atom, they can track the passage of time with a precision as high as one part ...
Five decades earlier than planned, Magnox is embarking on the decommissioning project to clean-up and demolish the four 'blower house' structures which surround the two reactor buildings at the Berkel...
Stampede 2 drives frontiers of science and engineering forward
Stampede 2 drives science and engineering
2016/6/2
Today, the National Science Foundation (NSF) announced a $30 million award to the Texas Advanced Computing Center (TACC) at The University of Texas at Austin (UT Austin) to acquire and deploy a new la...
Metric selection in fast dual forward backward splitting
The gradient data optimization index space
2015/8/7
The performance of fast forward-backward splitting, or equivalently fast proximal gradient methods, is susceptible to conditioning of the optimization problem data. This conditioning is related to a m...
Forward secrecy guarantees that eavesdroppers simply cannot reveal secret data of past communications. While many TLS servers have deployed the ephemeral Diffie-Hellman (DHE) key exchange to support f...
Ultra-low-voltage Micro-ring Modulator Integrated with a CMOS Feed-forward Equalization Driver
Waveguide modulators Photonic integrated circuits
2011/5/26
We present an all-CMOS micro-ring modulator packaged with a feed-forward equalization driver circuit, operating in charge-injection mode at 8 Gbps with a drive voltage of only 50 mVp-p and a power con...
Simple and Scalable WDM/TDMA-PON using Spectral Slicing and Forward Error Correction
Fiber optics communications Networks combinatorial network design
2011/5/22
We describe a simple and scalable WDM/TDMA PON system that uses spectral slicing and FEC in burst-mode upstream transmissions. The sensitivity was improved to -31.5 dB at a sliced bandwidth of 400 GHz...
Soft-decision Forward Error Correction in a 40-nm ASIC for 100-Gbps OTN Applications
40-nm ASIC OTN Application Error Correction
2011/5/15
Soft-decision forward error correction provides high coding gain, but typically with high complexity. We present a soft-decision turbo product code with >11 dB NECG and reasonable complexity in a 40-n...
Unrepeatered Transmission over 300 km of NZDSF Using 8x112-Gb/s Time-Interleaved RZ-PDM-QPSK with Coherent Detection and Forward Raman Pumping
Unrepeatered Transmission Coherent Detection RZ-PDM-QPSK
2011/5/15
We show that time-interleaved RZ-PDM-QPSK and forward Raman pumping can increase the performance of a 112-Gb/s PDM-QPSK coherent unrepeatered transmission system over 300 km of NZDSF by more than 2 dB...
Optimal Forward Kinematics Modeling of Stewart Manipulator Using Genetic Algorithms
Stewart Forward Kinematics Predicted Squared Error Genetic Algorithm
2009/12/30
In this paper, a new technique for modeling the forward kinematics of a Stewart manipulator is presented based on a predicted squared error cost function. Initially, the inverse kinematics model was i...
装备无级变速器的整车前向模型建立与仿真（Forward Modeling and Simulation on Vehicle Equipped with CVT）
车辆 无级变速器 前向仿真
2009/8/11
在车辆无级变速器（CVT）产品开发过程中，应用前向仿真可以真实地模拟实际汽车行驶工况。建立装备CVT的整车前向模型，通过仿真过程分析，调整CVT产品结构参数，提高了仿真结果的可信度和精度，实现了对CVT控制策略的设计，缩短了CVT产品工程开发的时间和费用，仿真分析与实车实验结果对比分析表明所建模型有较高的准确性，可应用于CVT产品开发。
Resonant Demagnetization PWM Forward Converter
Resonant Demagnetization PWM Forward Converter
2009/7/28
In this paper, a new approach to demagnetization process of a PWM forward converter (FC) is proposed. According to this approach, the demagnetization winding and diode of a conventional FC are removed...
Active Clamped ZVS Forward Converter With Soft-Switched Synchronous Rectifier
DC-DC converter forward converter active clamp
2009/7/28
This paper presents the analysis, design and implementation of an active-clamped, ZVS forward converter equipped with a soft-switched synchronous rectifier (ACFC-SR) proposed for high-efficiency, low ...
Operator View: Drivers in the Submarine Networking Industry Today and moving Forward
Operator View Drivers Submarine Networking
2009/7/20
This paper examines the current state of submarine networks and reviews their evolution in the light of traffic increase. The technical challenges of future submarine systems and required breakthrough...
W-band 3.75-Gb/s 8PSK Wireless Signal Generation and Transmission via Optical Frequency Octupling and Bias Modulation of NBUTC-PD with Feed-Forward Equalizer
Wireless Signal Generation Optical Frequency Octupling NBUTC-PD Feed-Forward Equalizer
2009/7/17
Generation and transmission of a wireless W-band 8PSK signal with 3.75-Gb/s data rate are experimentally demonstrated. The W-band carrier is generated from millimeter-wave generation with frequency oc...