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Scratch-concerned yield modeling for IC manufacturing involved with a chemical mechanical polishing process

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Journal of Zhejiang University-Science C(Computers and Electronics) 2012年第5期13卷 376-384页

作者： jiao-jiao ZHU xiao-hua LUO Li-sheng CHEN Yi YE xiao-lang YAN Institute of VLSI Design .Zhefiang UniversityHangzhou 310027China

In existing integrated circuit (IC) fabrication methods,the yield is typically limited by defects generated in the manufacturing *** fact,the yield often shows a good correlation with the type and density of the *** a result,an accurate defect limited yield model is essential for accurate correlation analysis and yield *** real defects exhibit a great variety of shapes,to ensure the accuracy of yield prediction,it is necessary to select the most appropriate defect model and to extract the critical area based on the defect *** the realistic outline of scratches introduced by the chemical mechanical polishing (CMP) process,we propose a novel scratch-concerned yield model.A linear model is introduced to model *** on the linear model,the related critical area extraction algorithm and defect density distribution are *** to higher correspondence with the realistic outline of scratches,the linear defect model enables a more accurate yield prediction caused by scratches and results in a more accurate total product yield prediction as compared to the traditional circular model.

关键词： Chemical mechanical polishing (CMP) Scratch Defect Yield model Critical area

Effect of lactic acid bacteria inoculants on alfalfa(Medicago sativa L.) silage quality:assessment of degradation(in situ) and gas production(in vitro)

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Journal of Integrative Agriculture 2016年第12期15卷 2834-2841页

作者： LIU Ce LAI yu-jiao LU xiao-nan GUO Ping-ting LUO Hai-ling State Key Laboratory for Animal Nutrition College of Animal Science and TechnologyChina Agricultural University

Alfalfa （Medicago sativa） is difficult to ensile successfully because of the low content of moisture and water-soluble carbohydrates （WSC） in fresh alfalfa and the high buffering capacity in fresh alfalfa. Here, we conducted a study to evaluate the effects of three lactic acid bacteria （LAB） inoculants （Lactobacillus case/, lactobacillus plantarum, and Pediococcus pentosaceus） on silage quality, in sitE/ruminal degradability, and in vitro fermentation of alfalfa silage. The first cut of alfalfa was wilted, chopped, and randomly divided into four groups： the control （CON） and control mixed with three separate LAB inoculants （106 cfu g-1）. Simmental steers with a body weight of （452±18） kg and with installed rumen fistulas were prepared for in situ degradation and for in vitro gas production. LAB inoculants had a lower （P〈0.05） content of butyric acid than the CON group. Among them, the L. casei inoculated silage had a higher （P〈0.05） content of water-soluble carbohydrate （WSC） and a lower （P〈0.05） NH3-H content. The effective degradation （ED） of crude protein in LAB inoculation decreased （P〈0.05）, while the ED of acid detergent fiber increased （P〈0.05） in situ fermentation. The alfalfa silage with LAB inoculants produced more carbon dioxide （P〈0.05）. The NH3-H content of mixed incubation fluid in L. casei inoculated silage was lower （P〈0.05） compared with other groups. Therefore, this study showed that LAB inoculants could improve both ensiling quality and degradation. In particular, the L. casei inoculations exhibited better performance by limiting proteolysis during ensiling.

关键词： alfalfa silage LAB inoculants nylon-bag degradation gas production fermentation

Efficiently Counting Affine Roots of Mixed Trigonometric Polynomial Systems

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Journal of Systems Science & Complexity 2017年第4期30卷 967-982页

作者： jiao Libin DONG Bo yu Bo School of Science Dalian University of Technology Panjin CampusPanjin 124221China School of Mathematical Sciences Dalian University of TechnologyDalian 116024China

Estimating the number of isolated roots of a polynomial system is not only a fundamental study theme in algebraic geometry but also an important subproblem of homotopy methods for solving polynomial systems. For the mixed trigonometric polynomial systems, which are more general than polynomial systems and rather frequently occur in many applications, the classical B6zout number and the multihomogeneous Bezout number are the best known upper bounds on the number of isolated roots. However, for the deficient mixed trigonometric polynomial systems, these two upper bounds are far greater than the actual number of isolated roots. The BKK bound is known as the most accurate upper bound on the number of isolated roots of a polynomial system. However, the extension of the definition of the BKK bound allowing it to treat mixed trigonometric polynomial systems is very difficult due to the existence of sine and cosine functions. In this paper, two new upper bounds on the number of isolated roots of a mixed trigonometric polynomial system are defined and the corresponding efficient algorithms for calculating them are presented. Numerical tests are also given to show the accuracy of these two definitions, and numerically prove they can provide tighter upper bounds on the number of isolated roots of a mixed trigonometric polynomial system than the existing upper bounds, and also the authors compare the computational time for calculating these two upper bounds.

关键词： BKK bound homotopy continuation method mixed trigonometric polynomial system mixed volume polynomial system upper bound.

Effects of different statins application methods on plaques in patients with coronary atherosclerosis

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World Journal of Clinical Cases 2021年第4期9卷 812-821页

作者： Xia Wu xiao-Bo Liu Ting Liu Wen Tian yu-jiao Sun Department of Geriatrics First Affiliated Hospital of China Medical UniversityShenyang 110001Liaoning ProvinceChina Department of Radiology First Affiliated Hospital of China Medical UniversityShenyang 110001Liaoning ProvinceChina

BACKGROUND Discontinued application of statins may be related to adverse cardiovascular ***,it is unclear whether different statins administration methods have effects on coronary artery *** To evaluate the effects of different statins application methods on plaques in patients with coronary *** A total of 100 patients diagnosed with atherosclerotic plaque by coronary artery computed tomography were continuously selected and divided into three groups according to different statins administration methods(discontinued application group,n=32;intermittent application group,n=39;sustained application group,n=29).The effects of the different statins application methods on coronary atherosclerotic plaque were *** The volume change and rate of change of the most severe plaques were significantly reduced in the sustained application group(P≤0.001).The volume change of the most severe plaques correlated positively with low-density lipoprotein(LDL-C)levels only in the sustained application group(R=0.362,P=0.013).There were no changes in plaques or LDL-C levels in the intermittent and discontinued application *** Continuous application of statins is effective for controlling plaque progression,whereas discontinued or intermittent administration of statins is not conducive to controlling *** with continuous statins administration can a reduction in LDL-C levels result in plaque volume shrinkage.

关键词： Coronary atherosclerotic plaque Statin Coronary artery computed tomography Low-density lipoprotein Plaque volume

Modeling of Incubation Time for Austenite to Ferrite Phase Transformation

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Journal of Iron and Steel Research International 2006年第4期13卷 32-34,60页

作者： ZHOU xiao-guan LIU Zhen-yu WU Di WANG Wei jiao Si-hai State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110004 Liaoning China Institute of Research and Development Baoshan Iron and Steel Co Ltd Shanghai 201900 China

On the basis of the classical nucleation theory, a new model of incubation time for austenite to ferrite transformation has been developed, in which the effect of deformation on austenite has been taken into consideration. To prove the precision of modeling, ferrite transformation starting temperature （Ar3） has been calculated using the Scheil＇s additivity rule, and the Ar3 values were measured using a Gleeble 1500 thermomechanical simulator. The Ar3 values provided by the modeling method coincide with the measured ones, indicating that the model is precise in oredicting the incubation time for austenite to ferrite transformation in hot deformed steels.

关键词： incubation time austenite to ferrite transformation hot deformation modeling

EVM simulation and analysis in digital transmitter

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The Journal of China Universities of Posts and Telecommunications 2009年第6期16卷 43-48页

作者： TAN xiao-heng LI Teng-jiao College of Communication Engineering Chongqing University Chongqing 400044 China

The error vector magnitude（EVM） is extensively applied as a metric for digital transmitter signal quality compliance in modern communication *** article is focused on the effects of local oscillator（LO） phase noise and nonlinear distortion of power amplifier on *** article contributes to below ***,the relationships between EVM and two effects,LO phase noise and nonlinear distortion of power amplifier,are derived and ***,to simplify the expression,the third-order intermodulation distortion（IMD3） is used to calculate the ***,an expression for the EVM is derived based on the digital transmitter model that considers local oscillator phase noise and nonlinear distortion of power ***,the math formula of bit error rate（BER） versus EVM is given which can be easier and more useful to predict BER,according to analysis of the relationship between EVM and signal to noise rate（SNR）,inspired by the works of Rishad,*** and AHM,*** are carried out to display the performance of EVM based on these relationships.

关键词： power amplifiers EVM phase noise nonlinear distortion IMD3

Curve Shortening Flow in Arbitrary Dimensional Euclidian Space

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Acta Mathematica Sinica,English Series 2005年第4期21卷 715-722页

作者： yun Yan YANG xiao Xiang jiao School of Mathematical Sciences Peking University Beijing 100871 P. R. China Graduate School Chinese Academy of Sciences P. R. China

In this paper, curve shortening flow in Euclidian space R^n（n≥3） is studied, and S. Altschuler＇s results about flow for space curves are generalized. We prove that the curve shortening flow converges to a straight line in infinite time if the initial curve is a ramp. We also prove the planar phenomenon when the curve shortening flow blows up.

关键词： Curve shortening flow Singularity formation Blow up

Sea Salt Sodium Record in a Shallow Ice Core from East Antarctica as a Potential Proxy of the Antarctic Sea Ice Extent in Southern Indian Ocean

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Journal of Ocean University of China 2019年第6期18卷 1351-1359页

作者： YANG jiao DU Zhiheng xiao Cunde State Key Laboratory of Cryospheric Science Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China State Key Laboratory of Earth Surface Processes and Resource Ecology Beijing Normal UniversityBeijing 100875China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China

Antarctic sea ice has experienced an increasing trend in recent decades,especially in the Ross Sea and Indian Ocean *** ice variability affects greatly the maritime airmass transport from high latitude to Antarctic *** we present a new ice core record of sea salt sodium(ssNa+)concentration at annual-resolution in the Princess Elizabeth Land spanning from 1990 to 2016,showing that this marker could be used as a potential proxy for reconstructing the sea ice extent(SIE)in the Southern Indian Ocean(SIO)given their significant correlation(R=-0.6,P<0.01)over the past 27 *** correlation and composite analyses results show that the ssNa^+at the 202 km inland from Zhongshan Station and the SIE changes in SIO are closely related to the Indian Ocean Dipole(IOD)and Southern Annular Mode(SAM).The northward wind in central SIO occurs during positive IOD and the strengthened westerlies occurs during positive SAM,both of which favor increased sea ice in SIO and lead to the decreased ssNa^+concentration at the coastal site.

关键词： ice core East Antarctica sea ice climate change southern Indian Ocean

从二元社会结构视角看地方农业产业转型升级——以陕西省猕猴桃产业为例

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三峡大学学报（人文社会科学版） 2025年第1期47卷 47-56页

作者：张继焦薛晓宏中国社会科学院大学社会与民族学院北京102488 中国社会科学院民族学与人类学研究所北京100081 中国社会科学院大学马克思主义学院北京102488

近年来,乡村产业振兴备受重视,许多地方都在致力于推动当地特色农业产业转型与升级,希望从区域走向全国乃至世界。但是现实中却发现很多地区特色农业产业的转型与升级面临着许多制约因素,那如何才能推动区域特色农业产业实现转型与升级... 详细信息

近年来,乡村产业振兴备受重视,许多地方都在致力于推动当地特色农业产业转型与升级,希望从区域走向全国乃至世界。但是现实中却发现很多地区特色农业产业的转型与升级面临着许多制约因素,那如何才能推动区域特色农业产业实现转型与升级,将区域特色农业产业推向全国呢?从二元社会结构视角,采用“伞式社会”和“蜂窝式社会”这一对概念,对陕西省猕猴桃产业发展历程进行阶段上的划分,详细分析了不同阶段官方“伞式社会”和民间“蜂窝式社会”力量的作用。通过不同阶段两种力量结构和功能的动态演变过程的分析,可以看到在每一阶段,找到官方“伞式社会”和民间“蜂窝式社会”二者发挥作用的结合点非常重要,双方都是可以发挥强大作用的主体,但是任何一方的单打独斗都无法在如今完成本区域农业产业的转型和升级,只有二者“高程度、高默契”的协同才能完成一个区域农业产业从传统向现代的转变,实现产业的转型与升级,从而实现从“区域到全国性”的跨越。

关键词：二元社会结构 “伞式社会” “蜂窝式社会” 陕西省猕猴桃产业