中国科学院机构知识库网格系统: 检索

Best (but oft-forgotten) practices: sample size and power calculation for a dietary intervention trial with episodically consumed foods 期刊论文 OAI收割
AMERICAN JOURNAL OF CLINICAL NUTRITION, 2020, 卷号: 112, 期号: 4, 页码: 920-925
作者: Zhang, Wei; Liu, Aiyi; Zhang, Zhiwei; Nansel, Tonja; Halabi, Susan

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收藏 | 浏览/下载：39/0 | 提交时间：2021/01/14

dietary intervention trials episodic consumption power sample size type I error

Testing inflated zeros in binomial regression models 期刊论文 OAI收割
BIOMETRICAL JOURNAL, 2020, 页码: 22
作者: Ye, Peng; Tang, Yi; Sun, Liuquan; Tang, Wan; He, Hua

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收藏 | 浏览/下载：36/0 | 提交时间：2021/01/14

binomial regression model power score test type I error zero-inflated binomial (ZIB) regression model

Jackknife empirical likelihood test for high-dimensional regression coefficients 期刊论文 OAI收割
COMPUTATIONAL STATISTICS & DATA ANALYSIS, 2016, 卷号: 94, 页码: 302-316
作者: Zang, Yangguang; Zhang, Sanguo; Li, Qizhai; Zhang, Qingzhao

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收藏 | 浏览/下载：35/0 | 提交时间：2018/07/30

Jackknife empirical likelihood High-dimensional analysis Regression coefficients Partial test with nuisance parameter Power Type-I error rate

Rare biosphere exploration using high-throughput sequencing: research progress and perspectives 期刊论文 OAI收割
CONSERVATION GENETICS, 2015, 卷号: 16, 期号: 3, 页码: 513-522
作者: Zhan, Aibin; MacIsaac, Hugh J.

收藏 | 浏览/下载：31/0 | 提交时间：2016/03/10

Biodiversity Metabarcoding Next-generation sequencing Rare species Type I error Type II error

The method of the system error modification of photoelectric theodolite of T type (EI CONFERENCE) 会议论文 OAI收割
2012 International Conference on Optoelectronics and Microelectronics, ICOM 2012, August 23, 2012 - August 25, 2012, Changchun, China
作者: Zhao L.; Zhang Y.

收藏 | 浏览/下载：19/0 | 提交时间：2013/03/25

The system error of photoelectric theodolite includes Visual axis error This paper ratiocinates the formula of Azimuth orientation error horizontal axis error elevation zero error and Visual axis error of Photoelectric theodolite of T type by triangle relation in space. Photoelectric theodolite of U type with main visual axis and auxiliary visual axis shoots images and inverse images of marks to obtain system error data. Error is less than 0.4 second by comparing error data of auxiliary visual axis with error data of main visual axis and the precision of two methods is identical. It has been validated that the method of error measurement of photoelectric theodolite of T type is right. 2012 IEEE. vertical axis error Azimuth orientation error elevation zero error

Transferring error analysis of reflex light-tube in azimuth aiming system (EI CONFERENCE) 会议论文 OAI收割
2012 5th International Symposium on Computational Intelligence and Design, ISCID 2012, October 28, 2012 - October 29, 2012, Hangzhou, China
作者: Zhao Y.; Zhao Y.; Zhao Y.

收藏 | 浏览/下载：31/0 | 提交时间：2013/03/25

According to the analysis of structural type and light transfer characteristics of azimuth aiming systems the calculation formula for the transferring error based on the adjustment and installation error was established and theoretical simulation was carried out which provided a theoretical basis for the application of reflex light-tube in azimuth aiming systems. 2012 IEEE.

PID control of glucose concentration in subjects with type 1 diabetes based on a simplified model: An in silico trial (EI CONFERENCE) 会议论文 OAI收割
10th World Congress on Intelligent Control and Automation, WCICA 2012, July 6, 2012 - July 8, 2012, Beijing, China
作者: Yu L.

收藏 | 浏览/下载：29/0 | 提交时间：2013/03/25

An artificial pancreas system (APS) mimics the function of a real pancreas through monitoring a diabetic's blood glucose and administering the right dose of insulin via an automatic control loop. It is hailed as a promising cure of diabetes though this technology is still years away from commercial use due to a few technological bottlenecks. The simulation model of insulin-glucose metabolism of type 1 diabetes mellitus (T1DM) is an essential part of APS. In order to simplify the parameter identification task so that the model can be implemented electronically with ease this paper presents a simplified model based on Routh approximation model reduction method. The results show that the approximation error between the simplified model and the original model is so small that can be neglected. Based on the simplified model a PID controller is designed to maintain normoglycemia (90mg/dl) in subjects with T1DM. The in silico simulation results show that the glucose concentration is controlled well the risk of hyperglycemia and hypoglycemia is reduced a lot. This suggests that the simplified model describes the insulin-glucose metabolism process accurately and the PID control algorithm is well-suitable to guide the further development of an APS. 2012 IEEE.

In situ long trace profiler for measurement of Wolter type-I mirror (EI CONFERENCE) 会议论文 OAI收割
Advances in Metrology for X-Ray and EUV Optics III, August 1, 2010 - August 2, 2010, San Diego, CA, United states
作者: Chen B.; Chen B.

收藏 | 浏览/下载：27/0 | 提交时间：2013/03/25

The surface profile of Wolter type-I mirror has a great impact on the performance of Solar X-ray Telescope. According to the existing fabrication instrument and experimental conditions in our lab an in situ Long Trace Profiler is developed and set up on the fabrication instrument in order to measure the surface profile of Wolter mirror in real time during fabrication process. Its working mechanism structural parameters and data processing algorithm are investigated. The prototype calibrated by a standard plane mirror is used to measure a sample of Wolter type-I mirror. The results show that our prototype can achieve an accuracy of 2.6rad rms for slope error with a stability of 1.33rad during the whole measurement period. This can meet further fabrication requirements. 2010 Copyright SPIE - The International Society for Optical Engineering.

A SPECTRAL METHOD FOR PANTOGRAPH-TYPE DELAY DIFFERENTIAL EQUATIONS AND ITS CONVERGENCE ANALYSIS 期刊论文 OAI收割
JOURNAL OF COMPUTATIONAL MATHEMATICS, 2009, 卷号: 27, 期号: 2-3, 页码: 254-265
作者: Ali, Ishtiaq; Brunner, Hermann; Tang, Tao

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收藏 | 浏览/下载：22/0 | 提交时间：2018/07/30

Spectral methods Legendre quadrature formula Pantograph-type delay differential equations Error analysis Exponential convergence

Athermal design of hybrid refractive/harmonic diffractive optical system for far-infrared multi-band (EI CONFERENCE) 会议论文 OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, November 19, 2008 - November 21, 2008, Chengdu, China
作者: Liu Y.; Liu Y.; Zhang H.; Zhang H.; Sun Q.

收藏 | 浏览/下载：31/0 | 提交时间：2013/03/25

In order to get enough information about the target avoid big chromatic aberration as a result of wide spectrum and the complexity of optical system and adapt different special environment temperature a hybrid refractive/harmonic diffractive optical system in far-infrared multi-band is described in the paper. This diffractive optical system has been designed an athermalized multi-band imaging system with harmonic diffractive element in 15-50m spectrum based on larger 1dispersion capability and particular thermal dispersive power of harmonic diffractive element. Then at the temperature range from 0C to 40C this design can simultaneously meet with all requirements of the imaging system in five harmonic wave bands including15.8-16.2m 18.5-20m 23-25m 30.5-33.5m and 46-50m. In each harmonic wave band the magnification changes as a function of wavelength which creates image registration error. To compensate this shortcoming a zoom optical system is designed with three lenses by means of optical two- component method. The design results show that the hybrid refractive/harmonic diffractive optical system can realize athermalized and achromatic design and the zoom optical system makes half image height at 3.53mm in every harmonic wave band and still realizes aberration compensation action. In the five harmonic wave bands each optical transfer function approaches the diffraction limit at ambient temperature range of 0C to 40C. Finally the system realizes the requirements of portability mini-type and ease for fabrication. 2009 SPIE.