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A Polynomial Prediction Filter Method for Estimating Multisensor Dynamically Varying Biases

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Chinese Journal of Aeronautics 2007年第3期20卷 240-246页

作者： GAO Yu zhang jian-qiu HU bo Department of Electronics Fudan University Shanghai 200433 China

The estimation of the sensor measurement biases in a multisensor system is vital for the sensor data fusion. A solution is provided for the estimation of dynamically varying multiple sensor biases without any knowledge of the dynamic bias model parameters. It is shown that the sensor bias pseudomeasurement can be dynamically obtained via a parity vector. This is accomplished by multiplying the sensor uncalibrated measurement equations by a projection matrix so that the measured variable is eliminated from the equations. Once the state equations of the dynamically varying sensor biases are modeled by a polynomial prediction filter, the dynamically varying multisensor biases can be obtained by Kalman filter. Simulation results validate that the proposed method can estimate the constant biases and dynamic biases of multisensors and outperforms the methods reported in literature.

关键词： signal processing dynamic bias estimation simulation multisensor Kalman filter

Estimates of SU(2) Glueballs on a Coarse, Anisotropic Lattice

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Chinese Physics Letters 1998年第12期15卷 865-867页

作者： zhang jian-bo JIN Min JI Da-ren Zhejiang Institute of Modern Physics and Department of Physics Zhejiang UniversityHangzhou 310027

Using Tadpole-improved lattice action,the low-lying glueball spectrum of the pure-gauge SU(2)theory is calculated on an anisotropic *** results of m(0+),m(2+),and m(0-)are consistent with that for the Wilson action on... 详细信息

关键词： SU(2) anisotropic lattice

The Revision of Aluminum-containing Food Additive Provisions in China

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Biomedical and Environmental Sciences 2016年第6期29卷 461-466页

作者： zhang Hong zhang Ji Yue WANG Hua Li LUO Peng Jie zhang jian bo China National Center for Food Safety Risk Assessment Beijing 200022 China

The aim of this study was to revise the provisions for aluminum-containing food additives in GB 2760-2011 （The National Food Safety Standard for Use of Food Additives）, in order to reduce aluminum exposure among the Chinese population. According to the latest risk assessment results of JECFA and China on aluminum and the actual use of aluminum-containing food additives in certain products, the aluminum-containing food additive-related provisions in GB 2760-2011 were revised. Those revisions included narrowing down the applicable food categories and adjusting the maximum use level of aluminum potassium sulfate and aluminum ammonium sulfate, repealing nine aluminum-containing food additives in puffed food and repealing the use of sodium aluminum phosphate, sodium aluminosilicate and starch aluminum octenylsuccinate in all food.

关键词： The Revision of Aluminum-containing Food Additive Provisions in China GMP than

Exposure Assessment of Sb2O3 in PET Food Contact Materials

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Biomedical and Environmental Sciences 2016年第4期29卷 305-313页

作者： ZHU Lei WANG Zhu Tian XU Hai Bin SUN Ru Bao zhang Hong zhang jian bo China National Centre for Food Safety Risk Assessment Beijing 100022 China Institute of Disease Control and Prevention Academy of Military Medical Science Beijing 100071 China

This study was conducted to do exposure assessment of the possible migration of antimony trioxide （Sb203） from Polyethylene terephthalate （PET） food contact materials （FCM）. Consumption Factor （CF） and Food-type Distribution Factor （fT） were calculated from survey data with reference to the US FDA method. The most conservative migration conditions were obtained by testing Sb migration from PET FCM based on the Chinese national standard of GB/T 5009.101-2003[1].

关键词： PET Exposure Assessment of Sb2O3 in PET Food Contact Materials FCM Sb

Risk Analysis of Sulfites Used as Food Additives in China

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Biomedical and Environmental Sciences 2014年第2期27卷 147-154页

作者： zhang jian bo zhang Hong WANG Hua Li zhang Ji Yue LUO Peng Jie ZHU Lei WANG Zhu Tian China National Center for Food Safety Risk Assessment

This study was to analyze the risk of sulfites in food consumed by the Chinese people and assess the health protection capability of maximum-permitted level （MPL） of sulfites in GB 2760-2011. Sulfites as food additives are overused or abused in many food categories. When the MPL in GB 2760-2011 was used as sulfites content in food, the intake of sulfites in most surveyed populations was lower than the acceptable daily intake （ADI）. Excess intake of sulfites was found in all the surveyed groups when a high percentile of sulfites in food was intaken. Moreover, children aged 1-6 years are at a high risk to intake excess sulfites. The primary cause for the excess intake of sulfites in Chinese people is the overuse and abuse of sulfites by the food industry. The current MPL of sulfites in GB 2760-2011 protects the health of most populations.

关键词： Risk Analysis of Sulfites Used as Food Additives in China

Theoretical Risk Assessment of Dietary Exposure to Advantame among the Chinese Population

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Biomedical and Environmental Sciences 2019年第12期32卷 930-933页

作者： zhang Ji Yue zhang jian bo YU Hang Yu YONG Ling zhang Hong WANG Hua Li WENG Yun Xuan China National Center for Food Safety Risk Assessment Beijing 100022China Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics Beijing Technology and Business UniversityBeijing 100048China

Advantame,with the chemical name N-[N-[3-(3-hydroxy-4-methoxyphenyl)propyl]-α-aspartyl]L-phenylalanine 1-methyl ester,monohydrate,is an artificial sweetener made by a chemical reaction between vanillin and aspartame,which are both permitted as flavoring and food additives by the China National Food Safety Standard-Standards for Use of Food Additives(GB 2760).As an intense sweetener,advantame is approximately 90-120times sweeter than aspartame and approximately14,000-48,000 times sweeter than saccharose.

关键词： approximate intense chemical

Theoretical Risk Assessment of Dietary Exposure to Brilliant Blue FCF in Chinese Population

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Biomedical and Environmental Sciences 2019年第2期32卷 126-129页

作者： WANG Hua Li DING Hao CAO Pei zhang jian bo WU Di TIAN Jing China National Center For Food Safety Risk Assessment

Brilliant blue FCF is a dye and synthe c colorant with a triphenylmethane base structure. It is permi ed as a food addi ve in many countries and regions. In recent years, Codex Alimentarius Commission[1], the European Union[2], Australia, New Zealand[3], the United States[4], China, and other countries have allowed the use of brilliant blue FCF as a food colorant.

关键词： FCF

Risk Assessment of MOAH and MOSH in Infants and Young Children

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Biomedical and Environmental Sciences 2019年第2期32卷 130-133页

作者： ZHU Lei zhang Hong CHEN Yan Fen PAN Jing Jing LIU Ai Dong PAN Feng zhang jian bo ZHONG Huai Ning China National Centre for Food Safety Risk Assessment Guangdong Inspection and Quarantine Technology Centre

Mineral oil hydrocarbons(MOH) in food may come from both contamination and various intentional uses in food production. MOH is widely used in food contact materials and food additives. It comprises complex mixtures, i... 详细信息

关键词： In Risk Assessment Young Children

Stabilized Thermal Equilibrium Transverse Zeeman Laser

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哈尔滨理工大学学报 1992年第4期 26-28页

作者： zhang jian Liu bo Wang jian

When a transverse He-Ne laser is in a thermal equilibrium state bycontrolling heating current and setting up an isolated layer,the lasercavity length is a constant.A single chip microcomputer is used in thissystem to ... 详细信息

关键词： laser frequency stability single chip microcomputer