1,744 research outputs found
Anisotropic magneto-resistance in MgO-based magnetic tunnel junctions induced by spin-orbit coupling
We performed a first-principles study of the tunneling anisotropic
magneto-resistance (TAMR) in Ag(Ir,Pt)MgOFe junctions. Enhanced TAMR with
ideal and skewed fourfold angular dependence is found in-plane and out-of-plane
TAMR of the system, respectively, which shows simple barrier thickness
dependency with number around 10\% in some junctions. The complex angular
dependency of the interfacial resonant states due to the spin-orbit coupling
should be responsible to the complex and enhanced TAMR found in these
junctions.Comment: 6 pages, 8 figure
CCR: Facial Image Editing with Continuity, Consistency and Reversibility
Three problems exist in sequential facial image editing: incontinuous
editing, inconsistent editing, and irreversible editing. Incontinuous editing
is that the current editing can not retain the previously edited attributes.
Inconsistent editing is that swapping the attribute editing orders can not
yield the same results. Irreversible editing means that operating on a facial
image is irreversible, especially in sequential facial image editing. In this
work, we put forward three concepts and corresponding definitions: editing
continuity, consistency, and reversibility. Then, we propose a novel model to
achieve the goal of editing continuity, consistency, and reversibility. A
sufficient criterion is defined to determine whether a model is continuous,
consistent, and reversible. Extensive qualitative and quantitative experimental
results validate our proposed model and show that a continuous, consistent and
reversible editing model has a more flexible editing function while preserving
facial identity. Furthermore, we think that our proposed definitions and model
will have wide and promising applications in multimedia processing. Code and
data are available at https://github.com/mickoluan/CCR.Comment: 10 pages, 11 figure
Far-field Super-resolution Chemical Microscopy
Far-field chemical microscopy providing molecular electronic or vibrational
fingerprint information opens a new window for the study of three-dimensional
biological, material, and chemical systems. Chemical microscopy provides a
nondestructive way of chemical identification without exterior labels. However,
the diffraction limit of optics hindered it from discovering more details under
the resolution limit. Recent development of super-resolution techniques gives
enlightenment to open this door behind far-field chemical microscopy. Here, we
review recent advances that have pushed the boundary of far-field chemical
microscopy in terms of spatial resolution. We further highlight applications in
biomedical research, material characterization, environmental study, cultural
heritage conservation, and integrated chip inspection.Comment: 34 pages, 8 figures,1 tabl
Label Mask AutoEncoder(L-MAE): A Pure Transformer Method to Augment Semantic Segmentation Datasets
Semantic segmentation models based on the conventional neural network can
achieve remarkable performance in such tasks, while the dataset is crucial to
the training model process. Significant progress in expanding datasets has been
made in semi-supervised semantic segmentation recently. However, completing the
pixel-level information remains challenging due to possible missing in a label.
Inspired by Mask AutoEncoder, we present a simple yet effective Pixel-Level
completion method, Label Mask AutoEncoder(L-MAE), that fully uses the existing
information in the label to predict results. The proposed model adopts the
fusion strategy that stacks the label and the corresponding image, namely Fuse
Map. Moreover, since some of the image information is lost when masking the
Fuse Map, direct reconstruction may lead to poor performance. Our proposed
Image Patch Supplement algorithm can supplement the missing information, as the
experiment shows, an average of 4.1% mIoU can be improved. The Pascal VOC2012
dataset (224 crop size, 20 classes) and the Cityscape dataset (448 crop size,
19 classes) are used in the comparative experiments. With the Mask Ratio
setting to 50%, in terms of the prediction region, the proposed model achieves
91.0% and 86.4% of mIoU on Pascal VOC 2012 and Cityscape, respectively,
outperforming other current supervised semantic segmentation models. Our code
and models are available at https://github.com/jjrccop/Label-Mask-Auto-Encoder
Chinese industrial air pollution emissions based on the continuous emission monitoring systems network
As the world's largest industrial producer, China has generated large amount of industrial atmospheric pollution, particularly for particulate matter (PM), SO2 and NOx emissions. A nationwide, time-varying, and up-to-date air pollutant emission inventory by industrial sources has great significance to understanding industrial emission characteristics. Here, we present a nationwide database of industrial emissions named Chinese Industrial Emissions Database (CIED), using the real smokestack concentrations from China's continuous emission monitoring systems (CEMS) network during 2015-2018 to enhance the estimation accuracy. This hourly, source-level CEMS data enables us to directly estimate industrial emission factors and absolute emissions, avoiding the use of many assumptions and indirect parameters that are common in existing research. The uncertainty analysis of CIED database shows that the uncertainty ranges are quite small, within ±7.2% for emission factors and ±4.0% for emissions, indicating the reliability of our estimates. This dataset provides specific information on smokestack concentrations, emissions factors, activity data and absolute emissions for China's industrial emission sources, which can offer insights into associated scientific studies and future policymaking
Verification of a novel point-of-care HbA1c device in real world clinical practice by comparison to three high performance liquid chromatography instruments
Introduction: A real world clinical study was designed and conducted to evaluate the performance of a novel point-of-care device for determination of glycated haemoglobin A1c (HbA1c), A1C EZ 2.0, in daily clinical practice.
Materials and methods: Five hundred and fourteen subjects were included in this study, and divided into three groups. HbA1c was measured by A1C EZ 2.0 and three different high performance liquid chromatography (HPLC) devices: Bio-Rad Variant II Turbo, Tosoh HLC-723 G8 and Premier Hb9210 separately. Precision of A1C EZ 2.0 was also evaluated.
Results: Results obtained from A1C EZ 2.0 and all HPLC devices are correlated. Passing-Bablok regression analysis shows the equation of A1C EZ 2.0 results against the mean of HPLC devices with corresponding 95% confidence intervals (95% CI) for the intercept and slope is y = 0.10 (- 0.17 to 0.10) + 1.00 (1.00 to 1.04) x. Bland-Altman difference plot shows that the mean relative difference between A1C EZ 2.0 and Variant II Turbo, G8, Hb9210 and all HPLC results is 2.5%, 0.6%, 0.4% and 1.1%, respectively. In addition, 121 pairs of results determined by using both venous and capillary blood prove that the difference of two kinds of blood sample causes no notable variation when measured by A1C EZ 2.0. Precision study gives 2.3% and 1.9% of total coefficient of variation for normal and abnormal HbA1c sample in A1C EZ 2.0.
Conclusions: HbA1c values measured by A1C EZ 2.0 were in good accordance with the results obtained with the reference HPLC devices
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