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23 results on '"Shi, N"'

4. Assessment of laser-dazzling effects based on laser spot and target features

Author

Shi N.-N., T Sun, Wang T.-F., J Guo, and F Qian

Subjects
Engineering, Pixel, business.industry, Image quality, Laser, Peak signal-to-noise ratio, Luminance, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Weighting, law.invention, Signal-to-noise ratio, Feature (computer vision), law, Computer vision, Artificial intelligence, business
Abstract

The global features of laser-dazzling images, the local features of targets and the distribution characteristics of laser spots are analyzed.A new algorithm composed of Weighted Feature Similarity (WFSIM) is proposed for the assessment of laser-dazzling effects. The method firstly uses the global features including luminance, contrast, edge definition and local feature-point maintainability to obtain the assessment model. Then, it computes the weighting factors, such as the saturated pixel number, signal to noise ratio and spot visual impotence based on the size, intensity and position of the laser spot. Based on the above results, a modified assessment algorithm can be constructed and a normalized evaluation can be implemented. An experiment platform of laser active imaging and recognition system is built for laser-dazzling images under different laser intensities, different background intensities and different spot positions. The proposed WFSIM algorithm is used to evaluate obtained laser-dazzling images. In terms of experiment results, the WFSIM algorithm shows good feasibility and rationality as comparing with Mean Square Error (MSE), Peak Signal to Noise Ratio (PSNR) and Structural Similarity (SSIM) image quality assessment methods. The evaluation results is consistent with the subjective human visual perception.

Published
2014
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5. Laser active imaging and recognition system based on double hidden layer BP algorithm

Author

R Wang, J Guo, T Sun, J Chen, Shi N.-N., Wang C.-J., Wang T.-F., and Wang W.-B.

Subjects
Artificial neural network, business.industry, Computer science, Feature vector, Far-infrared laser, Laser, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, law.invention, law, Recognition system, Computer vision, Artificial intelligence, Hidden layer, Affine transformation, Invariant (mathematics), business
Abstract

An experiment platform for laser active imaging and recognition was established based on the traditional laser active imaging system to investigate the target recognition after laser active imaging. The working mechanism of the platform was introduced and the Hu moment feature based BP neural network algorithm with double hidden layers and an experimental process were given. The target feature vector was consisted of seven invariant Hu moments. The BP neural network algorithm with double hidden layers including 136 weight coefficients was trained by 240 original sample libraries. The trained BP neural network algorithm was used to research a distance moving target in the dark condition, a model of 43 submachine gun, and a clear infrared laser active image was obtained. Experiment results show that statistical recognition probability is 68.87% for 2740 frames of images at 450 m and 72.11% for 2420 frames of images at 550 m. The corresponding recognition probabilities from rotation transformation are 80.05% and 84%, respectively, which is better than the results by affine transformation.

Published
2014
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6. Clinical value of high expression level of CD71 in acute myeloid leukemia

Author

Shi N, Liu L, Sun L, and Wu B

Subjects
0301 basic medicine, Oncology, Male, Cancer Research, medicine.medical_specialty, Transferrin receptor, Disease-Free Survival, 03 medical and health sciences, 0302 clinical medicine, Antigens, CD, Risk Factors, hemic and lymphatic diseases, Internal medicine, Complex Karyotype, Receptors, Transferrin, medicine, Humans, Cell Proliferation, biology, CD117, Cytogenetics, Acute erythroid leukemia, Myeloid leukemia, Anemia, Middle Aged, medicine.disease, Thrombocytopenia, Membrane glycoproteins, Leukemia, Myeloid, Acute, Proto-Oncogene Proteins c-kit, 030104 developmental biology, 030220 oncology & carcinogenesis, Immunology, biology.protein, Clinical value, Female
Abstract

CD71 (transferrin receptor 1, TfR-1) is a type II membrane glycoprotein and associated closely with tumors. It was recognized as an indication for diagnosing acute erythroid leukemia (AEL). High expression level of CD71 has been identified as a negative prognostic marker for many solid tumors. However, whether CD71 should be identified as an adverse marker in acute myeloid leukemia (AML) remained conflicting. We studied 214 AML patients for analysis of clinical and laboratory data. Taking the CD71 expression level of 60% as a standard, we divided our patients into two groups. We discovered that AML with high expression level of CD71 was prone to linked with severe anemia (P=0.004), thrombocytopenia (P

Published
2016

7. Is four a deadly number for the Chinese?

Author

Emily K Y Yip, Isaac B Yang, Noel C Y Chan, Nirmal S. Panesar, Shi N Li, Joyce K Y Lo, and Vivien W. Wong

Subjects
China, Design analysis, White (horse), Heart Diseases, business.industry, Lunar calendar, General Medicine, Census, Chinese people, Superstitions, Mortality data, Cause of Death, Hong Kong, Humans, Medicine, Poisson Distribution, business, Cardiac deaths, Demography
Abstract

BACKGROUND The numbers 4, 14 and 24 are associated with death for Cantonese-speaking Chinese people, as the words for these numbers sound like the words for "death", "must die" and "easy to die", respectively. A previous study in the United States investigating psychological stress engendered by fear of the number 4 found more cardiac deaths in Chinese and Japanese people, compared with white Americans, on the 4th day of the month. OBJECTIVE To determine whether more cardiac deaths occur in Hong Kong Chinese people on the days of the month with "deathly connotations" (4, 14 and 24). DESIGN Analysis of mortality data (1995-2000) of the Chinese population of Hong Kong from the Census and Statistics Department of the Hong Kong Government for these three days of the month, compared with the remaining days, according to both the Gregorian and Lunar calendars. RESULTS There were 17 346 cardiac deaths registered under ICD-9 codes 410-414 in 1995-2000. The mean (+ 1 SD) of the cumulative number of cardiac deaths on each day of the month was 587 (+ 30) for the Gregorian calendar or 573 (+ 24) for the Lunar calendar. The mean number of deaths on the 4th, 14th and 24th day of the month was not significantly different from the mean number of deaths on the remaining days of the month. CONCLUSION Our study of Hong Kong Chinese people does not support the concept that more cardiac deaths occur in Cantonese people on the 4th, 14th and 24th day of the month.

Published
2003
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8. The effects of moderate to vigorous aerobic exercise on the sleep need of sedentary young adults

Author

Mark Halaki, Chin Moi Chow, and Shi N. Wong

Subjects
Adult, Male, medicine.medical_specialty, Polysomnography, Physical Exertion, Sleep, REM, Physical Therapy, Sports Therapy and Rehabilitation, Treadmill exercise, Young Adult, Physical medicine and rehabilitation, Oxygen Consumption, medicine, Aerobic exercise, Humans, Orthopedics and Sports Medicine, Young adult, Exercise, Light sleep, Cross-Over Studies, medicine.diagnostic_test, Crossover study, Sleep in non-human animals, Exercise intensity, Physical therapy, Exercise Test, Female, Sedentary Behavior, Psychology, Sleep
Abstract

Exercise has been recommended for enhancing sleep; a claim linked to the belief that sleep need - defined by sleep duration and depth - is increased post-exercise to allow tissue recovery. Objective studies investigating exercise-sleep responses have produced mixed outcomes, and the disparity in results between studies may be due to differences in individual characteristics and/or exercise protocol, emphasising the importance of carefully controlled trials. We investigated the role of exercise on the sleep need of sedentary adults, after controlling for exercise mode, timing and duration. Twelve healthy volunteers (25.2 ± 4.0 years, 9 females, [Vdot]O(2)max 35.4 ± 8.8 ml· kg(-1) · min(-1)) were randomised to no-exercise or to a bout of treadmill exercise at 45%, 55%, 65% or 75% [Vdot]O(2)max in a crossover design. Sleep on no-exercise and exercise nights were assessed by polysomnography. Participants spent a greater proportion of sleep in light sleep (stage 1 + stage 2) after exercise at both 65% and 75% [Vdot]O(2)max (P0.05) than the no-exercise condition. There was a trend of a reduced proportion of rapid eye movement sleep with increased exercise intensity (P = 0.067). No other changes were observed in any other sleep variables. Two findings emerged: vigorous exercise did not increase sleep need; however, this level of exercise increased light sleep.

Published
2012

9. Gall Midge (GM) Susceptibility of Medium- and Long-Duration Rice Varieties

Author

Sen, A., Shi, N., and Mohanty, J. K.

Subjects
Gall Midge, Long Duration Rice Varieties, Medium Duration Varieties
Abstract

This article 'Gall Midge (GM) Susceptibility of Medium- and Long-Duration Rice Varieties' appeared in the International Rice Research Newsletter series, created by the International Rice Research Institute (IRRI). The primary objective of this publication was to expedite communication among scientists concerned with the development of improved technology for rice and for rice based cropping systems. This publication will report what scientists are doing to increase the production of rice in as much as this crop feeds the most densely populated and land scarce nations in the world.

Published
1984
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10. Field Screening of Rice Varieties Against Gall Midge and Rice Tungro Virus

Author

Nanda, U. K., Shi, N., Naik, R., and Das, K. C.

Subjects
Field Screening, Varieties, Tungro Virus, Gall Midge
Abstract

This article 'Field Screening of Rice Varieties Against Gall Midge and Rice Tungro Virus' appeared in the International Rice Research Newsletter series, created by the International Rice Research Institute (IRRI). The primary objective of this publication was to expedite communication among scientists concerned with the development of improved technology for rice and for rice based cropping systems. This publication will report what scientists are doing to increase the production of rice in as much as this crop feeds the most densely populated and land scarce nations in the world.

Published
1976
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11. Chemical Control of Thrips and Gall Midge (GM) in Rainfed Lowland Rice

Author

Panda, S. K. and Shi, N.

Subjects
Gall Midge, Thrips, Rainfed Lowland Rice, Chemical Control
Abstract

This article 'Chemical Control of Thrips and Gall Midge (GM) in Rainfed Lowland Rice' appeared in the International Rice Research Newsletter series, created by the International Rice Research Institute (IRRI). The primary objective of this publication was to expedite communication among scientists concerned with the development of improved technology for rice and for rice based cropping systems. This publication will report what scientists are doing to increase the production of rice in as much as this crop feeds the most densely populated and land scarce nations in the world.

Published
1988
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12. Chemical Control of Whitebacked Planthopper (WBPH)

Author

Panda, S. K. and Shi, N.

Subjects
Sogatella Furcifera, Chemical Control
Abstract

This article 'Chemical Control of Whitebacked Planthopper (WBPH)' appeared in the International Rice Research Newsletter series, created by the International Rice Research Institute (IRRI). The primary objective of this publication was to expedite communication among scientists concerned with the development of improved technology for rice and for rice based cropping systems. This publication will report what scientists are doing to increase the production of rice in as much as this crop feeds the most densely populated and land scarce nations in the world.

Published
1988
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13. Carbofuran-Induced Rice Leaffolder (LF) Resurgence

Author

Panda, S. K. and Shi, N.

Subjects
Carbofuran, Leaffolder
Abstract

This article 'Carbofuran-Induced Rice Leaffolder (LF) Resurgence' appeared in the International Rice Research Newsletter series, created by the International Rice Research Institute (IRRI). The primary objective of this publication was to expedite communication among scientists concerned with the development of improved technology for rice and for rice based cropping systems. This publication will report what scientists are doing to increase the production of rice in as much as this crop feeds the most densely populated and land scarce nations in the world.

Published
1989
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14. Performance of Ors26-2014-4 (Lalat), a Medium-Duration Variety

Author

Panda, S. K., Shi, N., and Mohapatra, K. C.

Subjects
Ors26 2014 4, India, Medium Duration Variety
Abstract

This article 'Performance of Ors26-2014-4 (Lalat), a Medium-Duration Variety' appeared in the International Rice Research Newsletter series, created by the International Rice Research Institute (IRRI). The primary objective of this publication was to expedite communication among scientists concerned with the development of improved technology for rice and for rice based cropping systems. This publication will report what scientists are doing to increase the production of rice in as much as this crop feeds the most densely populated and land scarce nations in the world.

Published
1987
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15. Reactions of IRRI Strains to Gall Midge At Chiplima, India

Author

Roy, A., Misra, P. K., Nanda, U. K., and Shi, N.

Subjects
Insect Resistance, Strains, Gall Midge, India, IRRI
Abstract

This article 'Reactions of IRRI Strains to Gall Midge At Chiplima, India' appeared in the International Rice Research Newsletter series, created by the International Rice Research Institute (IRRI). The primary objective of this publication was to expedite communication among scientists concerned with the development of improved technology for rice and for rice based cropping systems. This publication will report what scientists are doing to increase the production of rice in as much as this crop feeds the most densely populated and land scarce nations in the world.

Published
1977
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16. Traditional Chinese Medicine guidelines for coronavirus disease 2019

Author

Liang, N., Ma, Y., Wang, J., Li, H., Wang, X., Jiao, L., Liu, B., Zhao, C., Luo, X., Zhao, S., Lü, M., Cao, J., Hu, W., Zhang, H., Liu, G., Lu, C., Liu, M., Li, L., Han, X., Liu, Y., Wang, L., Zhao, X., Dongfeng Wei, Bai, J., Sun, M., Yang, Y., Wu, X., Chen, Y., Shi, N., and Wang, Y.

17. Urban Regeneration of Industrial Areas: Affordable Housing for Low Income Populations in Cities

Author

Shi, N., Liu, H., Clark, G., and Webster, D.

Abstract

The UK-China Sustainable Development Dialogue (SDD) is a partnership between the UK and Chinese Governments to promote collaboration and good practice on sustainable development. It is framed by a 2004 joint Prime Ministerial declaration and was formally established in 2005 by an agreement signed by UK Deputy Prime Minister John Prescott and State Councillor Tang. The SDD was founded on the recognition that, in an interdependent world, international co-operation is needed to ensure that learning is shared and efforts are made collectively towards achieving common goals. This report is the 13th and Final Paper in the SDD (Urban Strand. It draws together the core conclusions from the previous twelve papers and offers recommendations for taking the dialogue forward.

22. Edge Modes and Nonlocal Conductance in Graphene Superlattices

Author

Brown R., Walet N.R., Guinea F. and 'We have analyzed the nature of edge states in superlattices of gapped graphene on BN. We have shown that nontrivial patterns of Berry curvature are induced in the superlattice Brillouin zone, giving rise to Chern numbers that are typically nonzero, and change from subband to subband',' topological edge modes are thus generic for a Hamiltonian describing modulated fields in monolayer graphene, as is suitable for graphene on BN. The precise value of these numbers depends on details of the superlattice potential, although they are generally present provided that physically reasonable superlattice parameters are used. The existence of finite Chern numbers in the superlattice bands leads to a valley Hall effect. These results are confirmed by real space calculations for superlattice ribbons. We find dispersive bands and crossings near the corners of the Brillouin zone. Currents along the superlattice edges are degraded by short-range intervalley scattering, whereas in clean graphene samples electronic transport is limited by long range, intravalley scattering. The effect of disorder localized at the edges is suppressed by the long decay length of the states, due to the small size of the gaps. Simple estimates of the mean free path and localization length associated with edge disorder give values in the order of microns. This provides an explanation for the low resistivities found in electronic transport measurements of graphene on BN [35] (see also Ref. [17] ). We have demonstrated that the superlattice is of importance to the transport properties of graphene on a substrate such as BN, or as a means to measure the valley Hall effect. We would like to thank M. Ben Shalom, V. Fal’ko, A. Geim, and J. Walbank for useful conversations. 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2018

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