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City trees can offset neighborhood heat islands（图）
City trees offset neighborhood heat islands
2019/11/22
The concept of heat islands -- densely built-up urban areas that are hotter than the rural and semi-rural landscapes around them -- has been extensively studied and is widely accepted.Now a new study ...
COMPENSATION OF THE IONOSPHERIC EFFECTS ON SAR INTERFEROGRAM BASED ON RANGE SPLIT-SPECTRUM AND AZIMUTH OFFSET METHODS – A CASE STUDY OF YUSHU EARTHQUAKE
InSAR Ionospheric effects Range split-spectrum Azimuth offset Ionosphere correction Yushu earthquake
2018/5/14
InSAR technique can measure the surface deformation with the accuracy of centimeter-level or even millimeter and therefore has been widely used in the deformation monitoring associated with earthquake...
A Chosen Plaintext Attack on Offset Public Permutation Mode
symmetric cryptography block cipher mode of operation authenticated encryption
2018/4/20
Offset Public Permutation Mode (OPP) by Granger et al. is a one-pass authenticated encryption scheme supporting associated data (AEAD scheme). Leveraging an error in analysis of the scheme, a chosen p...
Cognitive restraint can be offset by distraction, leading to increased meal intake in women
Dietary restraint diet energy intake
2016/6/14
Cognitive restraint, a stable disposition to limit
food intake, can be assessed by questionnaires, but there is no
quantitative, objective measure of its effect.
Will more snow over Antarctica offset rising seas?Don’t count on it
snow Antarctica offset rising seas
2016/5/31
Many factors related to warming will conspire to raise the planet’s oceans over coming decades — thermal expansion of the world’s oceans, melting of snow and ice worldwide, and the collapse of massive...
ESTIMATION OF THE LIDAR HEIGHT OFFSET IN COASTAL VEGETATED AREAS
lidar laser scanning vegetation accuracy feature extraction intensity values
2015/11/10
Authorities operating in the field of coastal management require reliable area-wide height information for their responsibilities regarding to the safety of the coastal area. In this context the lidar...
The Spammed Code Offset Method
PUF helper data
2014/3/10
Helper data schemes are a security primitive used for privacy-preserving biometric databases and Physical Unclonable Functions. One of the oldest known helper data schemes is the Code Offset Method (C...
Offset frequency dynamics and phase noise properties of a self-referenced 10 GHz Ti:sapphire frequency comb
Offset frequency dynamics phase noise properties self-referenced 10 GHz sapphire frequency comb
2011/8/11
Abstract: This paper shows the experimental details of the stabilization scheme that allows full control of the repetition rate and the carrier-envelope offset frequency of a 10 GHz frequency comb bas...
SOA-based OTDM-DPSK Demultiplexing Assisted by Offset-Filtering
Nonlinear optical signal processing Semiconductor optical amplifiers
2015/5/25
We demonstrated for the first time 80 to 40 Gb/s OTDM-DPSK demultiplexing using a single SOA assisted by offset-filtering. Error free performance is achieved with an average power penalty of 5.5 dB.
Non-Data-Aided Wide-Range Frequency Offset Estimator for QAM Optical Coherent Receivers
Non-Data-Aided Wide-Range Frequency Offset Estimator QAM Optical Coherent Receivers
2015/5/20
We propose and experimentally demonstrate a novel blind frequency offset estimator for coherent quadrature amplitude modulation (QAM) receivers. Its frequency offset estimation range is more than thre...
Scale Economies Can Offset the Benefits of Competition: Evidence from a School Consolidation Reform in a Universal Voucher System
school choice competition school consolidation achievement economies of scale
2012/11/1
A large school consolidation reform in the Netherlands changed minimum school size rules underlying public funding. The supply of schools decreased by 15 percent, but this varied considerably across m...
Lateral force sensor based on a core-offset tilted fiber Bragg grating.
Tilted fiber Bragg grating Core offset Lateral force sensor Cladding mode Differential power
2013/5/27
A novel lateral force sensor based on a core-offset tilted fi ber Bragg grating (TFBG) is propo sed and experimentall y demonstrated. The lateral force is determined by the differential refl ected pow...
Novel Ultra Wide-Range Frequency Offset Estimation for Digital Coherent Optical Receiver
Optical communications Coherent communication Phase modulation
2015/6/10
We propose and experimentally demonstrate a novel, dual-stage frequency offset estimator and achieve the widest range of ±0.5 times the system symbol rate for the first time in a 42.8-Gbit/s coherent ...
160-Gb/s Polarization-Multiplexed 16-QAM long-haul transmission over 3,123 km using digital coherent receiver with digital PLL based frequency offset compensator
Fiber Optics Communications Coherent communications
2015/6/9
We demonstrate 160-Gb/s PDM 16-QAM single channel transmission over the longest distance yet to be reported, of 3123.9 km. The coherent receiver employs a frequency offset compensator based on a digit...
Inverse offset method for adaptive cutter path generation from point-based surface
Inverse offset method point-based surface machined surface error
2009/8/19
The inverse offset method (IOM) is widely used for generating cutter paths from the pointbased surface where the surface is characterised by a set of surface points rather than parametric polynomial s...