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  知来一下,找到符合条件的论文13,012,994篇,用时 0.094

1181   Real time SAR-Data processing. Parallelism and granularity illusions and possibilities Real time SAR-Data processing. Parallelism and granularity illusions and possibilities
   1991
The problem of precision processing of SAR data in real time is discussed, considering both a new performance evaluation model for structured algorithms and effective computational schemes of the SAR data compression process, in order to assess conditions of effective real time processing possibilities in this performance demanding application. Our analysis leads us to propose a fine grain architecture as a reasonable solution. A rigorous performance estimate is also provided for it. The single ...
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1182   The UWB SAR system Pulsar: New generator and antenna developments The UWB SAR system Pulsar: New generator and antenna developments
   2003
PULSAR is an Ultra Wide-Band short pulse Radar developed by the CELAR (French Technical Centre for Armament Electronics) and the IRCOM (Research Institute of Microwave and Optical Communications) in order to detect foliage and ground concealed targets. One of the most promising mission of such potential radar is the detection of buried and surface land mine fields. An instrumentation measurement system has been designed and implemented. This paper deals with the recent development efforts on thi...
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1183   The Environmental Change Network: Integrating climate and ecological monitoring The Environmental Change Network: Integrating climate and ecological monitoring
   2012
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1184   New image features for discriminating targets from clutter New image features for discriminating targets from clutter
   1998
In this paper, we introduce a new set of image features for use in the discrimination algorithm of a baseline automatic target recognition (ATR) system. These new features are designed to capture the changes in spatial dispersion of the high-intensity pixels in the input image as the image is thresholded at different intensity levels. We show that significantly better performance can be obtained when the new features are used in place of the baseline discrimination features. In particular, we de...
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1185   Operational ship monitoring system based on Synthetic Aperture Radar processing Operational ship monitoring system based on Synthetic Aperture Radar processing
   2009
This paper presents a Ship Monitoring System (SIMONS) working with Synthetic Aperture Radar (SAR) images. It is able to infer ship detection and classification information, and merge the results with other input channels, such as polls from the Automatic Identification System (AIS). Two main stages can be identified, namely: SAR processing and data dissemination. The former has three independent modules, which are related to Coastline Detection (CD), Ship Detection (SD) and Ship Classification (...
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1186   Emotional expression affects the accuracy of gaze perception Emotional expression affects the accuracy of gaze perception
Janek S. Lobmaier, Matthias Hartmann,;reas J. Volz;Fred W. Mast    0
Emotional facial expressions are powerful social cues. Here we investigated how emotional expression affects the interpretation of eye gaze direction. Fifty-two observers judged where faces were looking by moving a slider on a measuring bar to the respective position. The faces displayed either an angry, happy, fearful or a neutral expression and were looking either straight at the observer, or were rotated 2°, 4°, 6° or 8° to the left and right. We found tha...
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1187   Starch gelatinization temperatures within potato during blanching Starch gelatinization temperatures within potato during blanching
Hisayasu Itoh    2007
The progression of gelatinization within potato cylinders blanched at 65,75 and 85°C for 2, 4 and 6 min was followed by iodine staining of sections. The distance to the gelatinization front was measured on photographs of both blanched and stained potatoes. A time-temperature simulation was performed with a finite difference computer program using thermal conductivity, specific heat, phase transition, density, heat-transfer coefficient, and initial temperatures as input data. Measured distanc...
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1188   Test cell migration and tunic formation during posthatching development of the larva of the ascidian, Ciona intestinalis Test cell migration and tunic formation during posthatching development of the larva of the ascidian, Ciona intestinalis
   2003
Morphological changes in the tunic layers and migration of the test cells during swimming period in the larva of the ascidian, Ciona intestinalis, were observed by light and electron microscopy. The swimming period was divided into three stages. In stage 1, further formation of juvenile tunic layer started only in the larval trunk and neck region. In stage 2, the layer became swollen in the ventral and dorsal sides of the neck region and in stage 3, the swelling expanded backward. Concomitantly ...
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1189   Problematic students of NASP-approved programs: An exploratory study of graduate student views Problematic students of NASP-approved programs: An exploratory study of graduate student views
Sandra M. Chafouleas, T. Chris Riley-Tillman and James L. McDougal    2012
This study reports the findings of an electronic exploratory survey of National Association of School Psychologists (NASP) Student Representatives. The purpose of the survey was to gather information about the perspective of graduate students concerning problematic peers and their experiences with them in school psychology training programs. Findings suggest that (a) students are unsure whether or not their training programs have an official procedure in place for dealing with problematic studen...
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1190   Best practices for improving intervention fidelity that every nurse should know Best practices for improving intervention fidelity that every nurse should know
Takahiro Fujiwara, Noboru Iida and Takashi Watanabe    2012
Column Editor: Lauren Clark
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1191   Assessment of sensors and aircraft for oil spill remote sensing Assessment of sensors and aircraft for oil spill remote sensing
   2005
Environment Canada has assessed sensors and aircraft suitable for remote sensing, particularly the capability of sensors to detect oil and to discriminate oil from background targets. The assessment was based on past experience and technical considerations. The first sensor recommended for use is an infrared camera or an IR/UV system. This recommendation is based on the system's ability to detect oil and discriminate this from the background, and the low cost of these sensors. The laser fluorose...
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1192   Aspirations, Expectations, and Delinquency: Stress and Additive Models Aspirations, Expectations, and Delinquency: Stress and Additive Models
Yuanki Tung, E. W. Grohse and F. B. Hill    2008
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1193   Motion of Markers and Bubbles in Solids by Self-Diffusion in a Temperature Gradient Motion of Markers and Bubbles in Solids by Self-Diffusion in a Temperature Gradient
Jining Han and Judith Herzfeld    2006
In a pure substance a temperature gradient gives rise to a current of atoms relative to the lattice planes. This current is compensated by the motion of lattice planes in the end face system. It is shown that markers or bubbles are not fixed to the lattice planes in the case of a free surface boundary condition. Thus such markers do not indicate the motion of lattice planes as was formerly supposed. Another mechanism for the motion of such markers is therefore proposed: the disturbance of the te...
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1194   Finite element method for interferometric SAR phase unwrapping Finite element method for interferometric SAR phase unwrapping
   1996
We present a new time-domain algorithm for weighted least squares phase unwrapping based on the finite element method. The proposed technique is specially designed for interferometric SAR applications; a noise-robust extension of the algorithm is also investigated. A number of experiments carried out both on simulated patterns and on real ERS-1/ERS-2 data validate the presented technique. ©2005 Copyright SPIE - The International Society for Optical Engineering.
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1195   Diagnostic delay and risk of relapse in patients with stage I nonseminomatous germ cell tumour followed on active surveillance Diagnostic delay and risk of relapse in patients with stage I nonseminomatous germ cell tumour followed on active surveillance
Jining Han and Judith Herzfeld    2002
Objective To determine whether delayed diagnosis affects the outcome of patients with stage I nonseminomatous germ cell tumour (NSGCT) followed by a policy of ‘active surveillance’.
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1196   On compressive sensing applied to SAR imaging On compressive sensing applied to SAR imaging
   2011
State of the art radar systems apply a large bandwidth and an increasing number of channels produce huge amount of data. The data easily exceeds that be stacked in the sensor or downlinked to the ground station. In order to solve this trouble, a novel synthetic aperture radar (SAR) raw data retrieval and a corresponding pulse compression method based on compressive sensing (CS) theory were presented. Under the assumption that the observed scene shows characteristic of a sparse reflectivity distr...
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1197   High precision workstation-based chirp scaling SAR processor High precision workstation-based chirp scaling SAR processor
   1997
In order to meet the challenges of new spaceborne multi-mode SAR sensors and missions, a multi-sensor chirp scaling SAR processor is currently under development at the German Remote Sensing Data Center DFD. High precision data processing is ensured by floating point data representation, frequent processing parameter update as well as the underlying phase preserving chirp scaling algorithm enhanced to deal with arbitrary Doppler centroid variations over range. The availability of high performance...
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1198   Factors affecting tablet disintegration Factors affecting tablet disintegration
W. Kuhn and P. Moser    2006
A 4 × 4 × 3 × 2 factorial experiment was run to determine the effects of disintegrating agents, lubricants, binders, and hardness on tablet disintegration. A single tablet filler, starch-lactose equal parts, was used. Tablets were found to disintegrate equally rapidly with or without disintegrating agent, thus allowing no comparison between disintegrating agents. Binders, lubricants, and hardness were found to differ in their effects on disintegration, and these factors are dis...
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1199   Characteristics, Services, and Infection Control Practices of New York City Assisted Living Facilities, 2010 Characteristics, Services, and Infection Control Practices of New York City Assisted Living Facilities, 2010
Bryan Howieson    2012
To describe New York City (NYC) assisted living facility (ALF) characteristics, services offered, and infection control practices and to identify infection control barriers and unmet needs.
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1200   Development of Mannosylated Liposomes Using Synthesized N-Octadecyl-d-Mannopyranosylamine to Enhance Gastrointestinal Permeability for Protein Delivery Development of Mannosylated Liposomes Using Synthesized N-Octadecyl-d-Mannopyranosylamine to Enhance Gastrointestinal Permeability for Protein Delivery
Wasu Witoonsaridsilp, Ornlaksana Paeratakul, Busaba Panyarachun;Narong Sarisuta    0
The lysozyme (LZ)-entrapped mannosylated liposomes were prepared in this study by the use of N-octadecyl-d-mannopyranosylamine (SAMAN), which had been synthesized in-house and confirmed by characterization with FTIR and NMR. The reactant residues of synthesized SAMAN were found to be less than 1%. The mean sizes, zeta potentials, drug entrapment efficiencies, and loading capacities of all liposomal formulations were in the ranges of 234.7 to 431.0 nm, −10.97 to &...
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1201   Properties of salt-extractable proteins of broiler meat Properties of salt-extractable proteins of broiler meat
W. Kuhn and P. Moser    2006
De-boned and homogenised light and dark meat of broilers was used to investigate the emulsification properties of meat and the chromatographic and electrophoretic characteristics of the salt-extractable proteins.
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1202   State, Space, World: Selected Essays by Henri Lefebvre State, Space, World: Selected Essays by Henri Lefebvre
Richard P. Gildrie    2012
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1203   Chemical ionization mass spectrometry of complex molecules. VIII. Esters of di- and tricarboxylic acids Chemical ionization mass spectrometry of complex molecules. VIII. Esters of di- and tricarboxylic acids
H. M. Fales, G. W. A. Milne, R. S. Nicholson    1971
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1204   Increased levels of S-100 protein after cardiac surgery with cardiopulmonary bypass and general surgery in children Increased levels of S-100 protein after cardiac surgery with cardiopulmonary bypass and general surgery in children
Ronald L. Seaman and Clyde F. Phelix    2008
The aim of this study was to evaluate changes in concentrations of the neurospecific protein S-100 in relation to cardiac surgery with cardiopulmonary bypass (CPB) and noncardiac general surgery in children below 3 years of age. Seventeen children underwent surgery for congenital heart disease and all survived without clinical signs of neurological complications. Samples for plasma concentrations of S-100 in these patients were taken on three occasions in connection with surgery: before the star...
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1205   Utilizing the MicroASAR on the SIERRA UAS for NASA's characterization of arctic sea ice experiment Utilizing the MicroASAR on the SIERRA UAS for NASA's characterization of arctic sea ice experiment
   2010
The MicroASAR is a flexible, robust SAR system built on the successful legacy of the BYU μSAR. It is a compact LFM-CW SAR system designed for low-power operation on small, manned aircraft or UAS. The NASA SIERRA UAS was designed to test new instruments and support flight experiments. NASA used the MicroASAR on the SIERRA during a science field campaign in 2009 to study sea ice roughness and break-up in the Arctic and high northern latitudes. This mission is known as CASIE-09 (Characterization...
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1206   The Effect of Sampling Frequency on Ground Water Quality Characterization The Effect of Sampling Frequency on Ground Water Quality Characterization
Frank Heflin, Sung S. Kwon and John J. Wild    2007
There is an implicit relationship between the frequency of sampling and the value of information obtained. This relationship is briefly explored by a study of nitrates in aquifers of the Quaternary age and fluorides and sulfates in aquifers of the Cambro-Ordovician age in Iowa. The ambient distribution of these chemicals, in general, is positively skewed with a significant number of observations in the lower end of the feasible range. It is shown that a much broader perspective of the distributi...
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1207   The Anthocyanin of Strawberries1 The Anthocyanin of Strawberries1
Ernest Sondheimer, Z. I. Kertesz    1948
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1208   Psychometric Characteristics of the Headache-Specific Locus of Control Scale Psychometric Characteristics of the Headache-Specific Locus of Control Scale
Gerald R. Allen and Guangdong Liu    2005
SYNOPSIS
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1209   Reversible photoisomerizations of sulfonephthalein indicator dyes. III. Kinetic Analysis of the Intermediate Sultone Formation Reversible photoisomerizations of sulfonephthalein indicator dyes. III. Kinetic Analysis of the Intermediate Sultone Formation
Timothy J. Molloy, Charles E. de Bock, Yao Wang and George A.C. Murrell    2004
A detailed kinetic analysis is presented of the transient sultone (A2) formation which proceeds thermally from a photogenerated intermediate species after flash excitation of bromo thymol blue and bromo xylenol blue in the presence of quinoline, pyridine and 4-methyl pyridine in toluene solution. The sultone ring cleavage is a bimolecular reaction with the base resulting in a hydrogen-bridged molecular complex (A1) which equilibrates consecutively with the most stable rotamer of the ion pair (A3...
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1210   Sentinel-1 CSAR mission status Sentinel-1 CSAR mission status
   2009
The Sentinel-1 synthetic aperture radar (SAR) constellation represents a completely new approach to SAR mission design by ESA in direct response to the operational needs for SAR data expressed under the EU-ESA Global Monitoring for Environment and Security (GMES) programme. The Sentinel-1 constellation is expected to provide near daily coverage over Europe and Canada, and weekly global coverage all independent of weather with delivery of radar data within 1 hour of acquisition - all vast improve...
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