中国科学院机构知识库网格系统: 检索

Locating Heating Channels of the Solar Corona in a Plage Region with the Aid of High-resolution 10830 ? Filtergrams 期刊论文 OAI收割
The Astrophysical Journal, 2024, 卷号: 964, 期号: 2, 页码: 157
作者: Hashim,Parida; Xu,Fangyu; Wang,Ya; Meng,Weijie; Shen,Jinhua

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收藏 | 浏览/下载：3/0 | 提交时间：2024/05/23

differential emission measure active-region transition-region magnetoacoustic oscillations magnetic-fields angstrom line helium lines quiet-sun moss dynamics

SHARP REGULARITY ESTIMATES FOR SOLUTIONS OF THE CONTINUITY EQUATION DRIFTED BY SOBOLEV VECTOR FIELDS 期刊论文 OAI收割
ANALYSIS & PDE, 2021, 卷号: 14, 期号: 8, 页码: 2539-2559
作者: Brue, Elia; Quoc-Hung Nguyen

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收藏 | 浏览/下载：17/0 | 提交时间：2022/04/02

ordinary differential equations with nonsmooth vector fields continuity equation transport equation regular Lagrangian flow BV function log-Sobolev space Bressan's mixing conjecture

EFFECTIVE DEFINABILITY OF KOLCHIN POLYNOMIALS 期刊论文 OAI收割
PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY, 2020, 卷号: 148, 期号: 4, 页码: 1455-1466
作者: Freitag, James; Sanchez, Omar Leon; Li, Wei

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收藏 | 浏览/下载：21/0 | 提交时间：2020/05/24

Differential fields Kolchin polynomial effective definability in families

Magnetic Flux Transport at the Solar Surface 期刊论文 OAI收割
SPACE SCIENCE REVIEWS, 2014, 卷号: 186, 期号: 1-4, 页码: 491-523
作者: Jiang, J.; Hathaway, D. H.; Cameron, R. H.; Solanki, S. K.; Gizon, L.

收藏 | 浏览/下载：25/0 | 提交时间：2016/11/30

Sun: magnetic fields Sun: photosphere Flux transport Meridional flow Differential rotation Diffusion

Ion-Cage Interpretation for the Structural and Dynamic Changes of Ionic Liquids under an External Electric Field 期刊论文 OAI收割
JOURNAL OF PHYSICAL CHEMISTRY B, 2013, 卷号: 117, 期号: 17, 页码: 5102-5112
作者: Wang, YT

收藏 | 浏览/下载：33/0 | 提交时间：2014/04/25

MOLTEN SODIUM-CHLORIDE MOLECULAR-DYNAMICS DOUBLE-LAYER DIFFERENTIAL CAPACITANCE ELECTROMAGNETIC-FIELDS ELECTROLYTE-SOLUTIONS TRANSPORT-PROPERTIES COMPUTER-SIMULATION STOKES-EINSTEIN SELF-DIFFUSION

Fokker-Planck type equations with Sobolev diffusion coefficients and BV drift coefficients 期刊论文 OAI收割
ACTA MATHEMATICA SINICA-ENGLISH SERIES, 2013, 卷号: 29, 期号: 2, 页码: 303-314
作者: Luo De Jun

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收藏 | 浏览/下载：28/0 | 提交时间：2021/01/14

VECTOR-FIELDS TRANSPORT-EQUATION CAUCHY-PROBLEM DIPERNA-LIONS UNIQUENESS SPACES DEGENERATE EXISTENCE DiPerna-Lions theory Fokker-Planck equation stochastic differential equation BV regularity commutator estimate

Space optical remote sensor of the CAE thermal control index calculation method (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Advanced Design and Manufacturing Engineering, ADME 2011, September 16, 2011 - September 18, 2011, Guangzhou, China
作者: Li L.

收藏 | 浏览/下载：34/0 | 提交时间：2013/03/25

The thermal control indicators CAE methods of Space optical remote sensor are analyzed in the presented work. We sat up a thermal optical analysis model for space optical remote sensor. By assuming fully covered by in-orbit temperature load and using the finite element method for thermal deformation analysis we obtained the optical remote sensor surface deformation and displacement under various thermal loading. Using ZERNIKE polynomial wave was fitted to obtain ZERNIKE polynomial coefficients which were incorporated into the optical system design. Using CODE V optical calculation software heat-ray machines under elastic deformation of the system point spread function transfer function (MTF) wave front differential (WFE) etc. were calculated. Image quality changes of remote sensors are discussed in variety assumed cases such as temperature loads of quality change. By repeated iteration critical value of temperature fields meeting the design requirements are obtained for the optical system. Optical indicators were converged to the temperature field indicator then reasonable indicators of thermal control for remote sensors were obtained. For the thermal control design this method provided a reliable basis for design. (2011) Trans Tech Publications Switzerland.

One-loop renormalization of non-Abelian gauge theory and beta function based on loop regularization method 期刊论文 OAI收割
INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 2008, 卷号: 23, 期号: 19, 页码: 2861-2913
作者: Cui, Jian-Wei; Wu, Yue-Liang; Cui, JW , Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, Beijing 100080, Peoples R China

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收藏 | 浏览/下载：57/0 | 提交时间：2012/08/02

Constrained Differential Renormalization Background-field Gauge Yang-mills Fields Invariant Operators Perturbation-theory Symmetries Identities Qfts

808nm high-power high-efficiency GaAsP/GaInP laser bars (EI CONFERENCE) 会议论文 OAI收割
Optoelectronic Materials and Devices III, October 27, 2008 - October 30, 2008, Hangzhou, China
作者: Wang Y.; Wang L.; Wang L.; Wang L.; Liu Y.

收藏 | 浏览/下载：34/0 | 提交时间：2013/03/25

808nm high power diode lasers which is rapidly maturing technology technically and commercially since the introduction in 1999 of complete kilowatt-scale diode laser systems have important applications in the fields of industry and pumping solid-state lasers (DPSSL). High power and high power conversion efficiency are extremely important in diode lasers and they could lead to new applications where space weight and electrical power are critical. High efficiency devices generate less waste heat which means less strain on the cooling system and more tolerance to thermal conductivity variation a lower junction temperature and longer lifetimes. Diode lasers with Al-free materials have superior power conversion efficiency compared with conventional AlGaAs/GaAs devices because of their lower differential series resistance and higher thermal conductivity. 808nm GaAsP/GalnP broad-waveguide emitting diode laser bars with 1mm cavity length have been fabricated. The peak power can reach to 100.9W at 106.5A at quasicontinuous wave operation (200s 1000Hz). The maximum power conversion efficiency is 57.38%. Based on these high power laser bars we fabricate a 1 3 arrays the maximum power is 64.3 W in continuous wave mode when the current is 25.0A. And the threshold current is 5.9A the slope efficiency is 3.37 W/A. 2008 SPIE.

Research on the affect of differential-images technique to the resolution of infrared spatial camera (EI CONFERENCE) 会议论文 OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, July 8, 2007 - July 12, 2007, Chengdu, China
Jin G.; An Y.; Qi Y.; Hu F.

收藏 | 浏览/下载：21/0 | 提交时间：2013/03/25

The optical system of infrared spatial camera adopts bigger relative aperture and bigger pixel size on focal plane element. These make the system have bulky volume and low resolution. The potential of the optical systems can not be exerted adequately. So one method for improving resolution of infrared spatial camera based on multi-frame difference-images is introduced in the dissertation. The method uses more than one detectors to acquire several difference images and then reconstructs a new high-resolution image from these images through the relationship of pixel grey value. The technique of difference-images that uses more than two detectors is researched and it can improve the resolution 2.5 times in theory. The relationship of pixel grey value between low-resolution difference-images and high-resolution image is found by analyzing the energy of CCD sampling a general relationship between the enhanced times of the resolution of the detected figure with differential method and the least count of CCD that will be used to detect figure is given. Based on the research of theory the implementation process of utilizing difference-images technique to improve the resolution of the figure was simulated used Matlab software by taking a personality image as the object and the software can output the result as an image. The result gotten from the works we have finished proves that the technique is available in high-resolution image reconstruction. The resolution of infrared spatial camera can be improved evidently when holding the size of optical structure or using big size detector by applying for difference image technique. So the technique has a high value in optical remote fields.