A High Resolution, High Precision Geoid for the British Isles

1990 ◽  
pp. 39-46 ◽  
Author(s):  
M. P. Stewart ◽  
R. G. Hipkin
Keyword(s):  
High Resolution ◽  
High Precision ◽  
British Isles

High resolution and high precision beta-spectrometry

Physica ◽  
1952 ◽  
Vol 18 (2) ◽  
pp. 1063-1065 ◽  
Author(s):  
R SIDAY
Keyword(s):  
High Resolution ◽  
High Precision ◽  
Beta Spectrometry

A new method for TIMS high precision analysis of Ba and Sr isotopes for cosmochemical studies

2017 ◽  
Vol 32 (7) ◽  
pp. 1388-1399 ◽  
Author(s):  
Elsa Yobregat ◽  
Caroline Fitoussi ◽  
Bernard Bourdon
Keyword(s):  
Mass Spectrometry ◽  
High Resolution ◽  
High Precision ◽  
Thermal Ionization Mass Spectrometry ◽  
New Method ◽  
Ionization Mass ◽  
Sr Isotopes ◽  
Sr Resin ◽  
Thermal Ionization Mass ◽  
Isotope Measurements

A new protocol using Eichron™ Sr-resin for high-resolution Sr and Ba isotope measurements using thermal ionization mass spectrometry for cosmochemical samples.

scholarly journals High-precision 41K/39K measurements by MC-ICP-MS indicate terrestrial variability of δ41K

2018 ◽  
Vol 33 (2) ◽  
pp. 175-186 ◽  
Author(s):  
Leah E. Morgan ◽  
Danielle P. Santiago Ramos ◽  
Brett Davidheiser-Kroll ◽  
John Faithfull ◽  
Nicholas S. Lloyd ◽  
...  
Keyword(s):  
High Resolution ◽  
High Precision ◽  
Cold Plasma ◽  
Isotopic Compositions ◽  
Icp Ms

Potassium isotopic compositions measured by MC-ICP-MS in cold-plasma, high-resolution mode indicate terrestrial variability in 41K/39K ratios.

The performance comparison of typical notched flexure hinges

2019 ◽  
Vol 234 (9) ◽  
pp. 1859-1867
Author(s):  
Wei Ma ◽  
Rongqi Wang ◽  
Xiaoqin Zhou ◽  
Guangwei Meng
Keyword(s):  
High Resolution ◽  
High Precision ◽  
Compliant Mechanisms ◽  
Performance Comparison ◽  
Modeling Method ◽  
Stress Concentrations ◽  
High Demand ◽  
Flexure Hinges ◽  
Matrix Modeling ◽  
Practical Guidelines

Flexure hinges, which serve as the crucial joints in a large number of compliant mechanisms, have been widely applied in a variety of significant fields where there is high demand for the micro/nano motions with high resolution and high precision. Currently, an increasing number of notched flexure hinges with different structures and performances have been rapidly developed, but the existing performance comparisons on different notched flexure hinges were only conducted on seldom typical structures and are far from the comprehensiveness and fairness due to the different comparative conditions and discrepant evaluating indexes. Therefore, the finite beam-based matrix modeling method and nondimension precision factors will be employed in comprehensive comparing and ranking of 13 types of frequently-used notched flexure hinges in terms of their main compliances, motion accuracies, and stress concentrations, further providing useful practical guidelines to develop the compliant mechanisms with excellent overall performances.

scholarly journals ACF Based Region Proposal Extraction for YOLOv3 Network Towards High-Performance Cyclist Detection in High Resolution Images

Sensors ◽  
2019 ◽  
Vol 19 (12) ◽  
pp. 2671 ◽  
Author(s):  
Chunsheng Liu ◽  
Yu Guo ◽  
Shuang Li ◽  
Faliang Chang
Keyword(s):  
High Resolution ◽  
High Precision ◽  
Extraction Method ◽  
High Performance ◽  
Detection Methods ◽  
Average Precision ◽  
Deep Network ◽  
High Resolution Images ◽  
Bounding Boxes ◽  
Detection And Localization

You Only Look Once (YOLO) deep network can detect objects quickly with high precision and has been successfully applied in many detection problems. The main shortcoming of YOLO network is that YOLO network usually cannot achieve high precision when dealing with small-size object detection in high resolution images. To overcome this problem, we propose an effective region proposal extraction method for YOLO network to constitute an entire detection structure named ACF-PR-YOLO, and take the cyclist detection problem to show our methods. Instead of directly using the generated region proposals for classification or regression like most region proposal methods do, we generate large-size potential regions containing objects for the following deep network. The proposed ACF-PR-YOLO structure includes three main parts. Firstly, a region proposal extraction method based on aggregated channel feature (ACF) is proposed, called ACF based region proposal (ACF-PR) method. In ACF-PR, ACF is firstly utilized to fast extract candidates and then a bounding boxes merging and extending method is designed to merge the bounding boxes into correct region proposals for the following YOLO net. Secondly, we design suitable YOLO net for fine detection in the region proposals generated by ACF-PR. Lastly, we design a post-processing step, in which the results of YOLO net are mapped into the original image outputting the detection and localization results. Experiments performed on the Tsinghua-Daimler Cyclist Benchmark with high resolution images and complex scenes show that the proposed method outperforms the other tested representative detection methods in average precision, and that it outperforms YOLOv3 by 13.69 % average precision and outperforms SSD by 25.27 % average precision.

Heinrich event 4 and Dansgaard/Oeschger events 5–10 recorded by high-resolution speleothem oxygen isotope data from central China

2014 ◽  
Vol 82 (2) ◽  
pp. 394-404 ◽  
Author(s):  
Houyun Zhou ◽  
Jian-xin Zhao ◽  
Yuexing Feng ◽  
Qiong Chen ◽  
Xiaojian Mi ◽  
...  
Keyword(s):  
High Resolution ◽  
Oxygen Isotope ◽  
High Precision ◽  
High Latitude ◽  
Southwest China ◽  
Asian Summer Monsoon ◽  
Central China ◽  
Temperature Changes ◽  
Heinrich Event ◽  
Asian Summer

AbstractA 50-yr resolution reconstruction of climate and environment variability during the period 43–14 ka was developed using 26 high-precision U/Th dates and 390 oxygen isotope (δ18O) data of a stalagmite (SJ1) collected from Songjia Cave in central China, which is close to the northwestern boundary of the Asian summer monsoon (ASM). The δ18O record in SJ1 displays significant millennial-scale changes that correlate well in timing and duration with Dansgaard/Oeschger (D/O) events 5–10 and Heinrich event 4 (H4) identified in high-latitude regions of the Northern Hemisphere. Four 230Th dates constrain the H4 event precisely to the period of 39.7 to 38.3 ka. Notable centennial variations of the ASM activity could be observed within the H4 event. The magnitude and duration of D/O event 4.1 recorded in SJ1 are similar to those archived in east China but different from those documented in southwest China, suggesting that the manifestation of this event may be regionally different. The timing, duration and structure of D/O events 5–10 and Heinrich event 4 suggest that temperature changes in both hemispheres have exerted significant influences on the ASM variations in central China.

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