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Robust Quantzation Index Modulation VIA Adaptive Watermarking

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China Communications 2008年第2期5卷 40-48页

作者： Wang, Guoxi ma, lihong Yu, Decong Cai, Kang Lu, Hanqing S China Univ Technol Dept Elect Engn GE Key Lab Comp Network Guangzhou 510641 Peoples R China Chinese Acad Sci Natl Lab Pattern Recognit Inst Automat Beijing 100080 Peoples R China Guangdong Telecom Guangzhou Guangdong Peoples R China

In this paper,we suggest an adaptive watermarkingmethod to improve both transparence and robustnessof quantization index modulation(QIM)*** of a fixed quantization step-size,we apply astep-size adapted to image content in each 8×8block to make a balance of robust extraction andtransparent *** modified step-size isdetermined by contrast masking thresholds ofWatson’s perceptual *** a normalizedcrossed-correlation value between the original watermarkand the detected watermark,we could observethat our method is robust to attacks of additivewhite Gaussian noise(AWGN),Salt and Peppernoise and Joint Photographic Experts Group(JPEG)compression than the original *** taking intoaccount the contrast insensitivity and visible thresholdsof human visual system,the suggested improvementachieves a maximum embedding strength andan appropriate quantization step-size which is consistentwith local values of a host signal.

关键词： Vector projected watermarking adaptive quantization index modulation contrast sensitivity masking

Estimation of Enthalpy of Formation Using Benson’s Group Addition and Functional Group Correction

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Chemical Research in Chinese Universities 2023年第2期39卷 296-304页

作者： LI Xianlan LUAN Yue LU Yanhua LI Wei ma lihong ZHANG Qingyou PANG Aimin Henan Engineering Research Center of Industrial Circulating Water Treatment Henan Joint International Research Laboratory of Environmental Pollution Control MaterialsHenan UniversityKaifeng475004P.R.China Science and Technology on Aerospace Chemical Power Laboratory Hubei Institute of Aerospace ChemotechnologyXiangyang441003P.R.China Laboratory&Equipment managements Service Dalian University of TechnologyDalian116024P.R.China

The enthalpies of formation of solid organic compounds containing carbon,nitrogen,oxygen,and hydrogen were estimated using two suggested descriptor sets,separately,by machine learning *** two descriptor sets are both composed of descriptors of Benson’s groups and corrected *** main differences between them are that one is generated based on atoms and the other is based on *** in-house program was specially written in Java to extract all the descriptors with a function to ensure that each atom(or bond)of a molecule is represented by Benson’s groups once for an atom-based(or bond-based)descriptor *** linear regression and partial least squares were used,separately,to build models to predict the enthalpy of formation for two descriptor *** combination of the models constructed by two descriptor sets based on the atoms and the bonds achieved the best-predicted results in this paper,and the corresponding results of the test set are better than that in the literature,from which the original data were ***,a small data set of fluorinated molecules was collected,and satisfactory results were also obtained for these molecules containing fluorine with the assistance of the former data set.

关键词： Enthalpy of formation Group contribution method Benson’s group Multiple linear regression Partial least square

RATE-CONSISTENT DIRECTIONLET CODESTREAM CREATED BY MODIFIED BFOS ALGORITHM

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Journal of Electronics(China) 2010年第1期27卷 118-126页

作者： ma lihong mai Dike Ren Miao Lin Chunyi Key Laboratory of Guangdong Wireless Communication Networks and Devices School of Electronic and Information Engineering South China University of Technology Guangzhou 510540 China Department of Biomedical Engineering Sun Yat Sen University Guangzhou 510080 China

In order to improve the bit allocation efficiency of Directionlet coding,a modified Breiman,Friedman,Olshen and Stone(BFOS) algorithm is suggested for rate consistent *** modifications are:(1) Dominant direction adjustment is proposed to balance the cost of sparse description and segment artifacts caused by discontinuous adjacent direction pairs.(2) Priority related merging is also proposed in the BFOS distortion list to find an optimal trimming element for unequal-importance bit *** results show that block effects could be removed without obvious bpp increment by selecting the dominant direction and its adjustment according to neighborhood homogeneity,and combined multi-PRIority(PRI) based merging of the M-ordered list offers unequal importance allocation and leads to a Peak Signal-to-Noise Ratio(PSNR) gain of 0.4 dB～1.3 dB.

关键词： Directionlet Dominant direction map Multi-PRIority(PRI) merging Bit distortion based truncation

The effects of simvastatin on cardiovascular outcomes in hypertensive patients with a high-normal level of total cholesterol

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中国循环杂志 2018年第S1期33卷 163-164页

作者： Peipei Lu Yuqing Zhang Liyuan ma Xuezhong Zhang Aihua Hu lihong ma Xianliang Zhou Lisheng Liu Wen Wang National Center for Cardiovascular Diseases Fuwai HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina Beijing Hypertension League Institute Chinese Hypertension LeagueBeijingChina

Objective To investigate the effects of simvastatin compared with standard treatment on cardiovascular outcomes and all-cause mortality in high-risk hypertensive patients with a high–normal level of total cholesterol(TC).Methods In a randomized,open-label,blinded-endpoint trial,hypertensive patients at high risk for cardiovascular events from 180 clinical centers in China were assigned to receive treatment with amlodipine plus amiloride/hydrochlorothiazide(n=6,776)or telmisartan(n=6,766).

关键词： effects hypertensive patients high-normal level total cholesterol

Analysis of correlation between MSCT classification and prognosis of basal ganglia hypertensive intracerebral hemorrhage

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Discussion of Clinical Cases 2019年第4期6卷 1-5页

作者： Zhixue Liu Xiaoyan Zhang lihong ma Department of Neurology Baogang HospitalBaotouInner MongoliaChina Department of Neurology Wuhai People’s HospitalWuhaiInner MongoliaChina

Objective:To investigate the correlation between MSCT grading and the prognosis of basal ganglia hypertensive intracerebral ***:A total of 86 patients with basal ganglia hypertensive cerebral hemorrhage admitted to our hospital from may 2017 to march 2018 were *** clinical data and imaging data were collected from 86 *** MSCT images were observed and summarized by two *** on the morphology of cisterna ambiens and brain stem,the correlation of MSCT grading to Glasgow Coma Scale(GCS)and Glasgow Outcome Scale(GOS)grading was analyzed by use of Spearman correlation ***:Among 86 patients,the number of MSCT gradeⅠ,Ⅱ,ⅢandⅣwere 29 cases,38 cases,9 cases and 10 cases *** was no significant correlation between MSCT grading and age,sex as well as types of combined underlying diseases in the patients with basal ganglia hypertensive intracerebral hemorrhage(p>0.05).Spearman correlation analysis showed that there was a positive correlation between MSCT grading and GCS score of basal ganglia hypertensive intracerebral *** higher MSCT grade was,the higher GCS score was(r=0.719,pmages,the CT value ranged from 50 Hu to 80 ***-density bands surrounded the hematoma in the acute stage,and space-occupying effect could be seen in some patients,which resulted in the compression of ventricular sulcus and cistern and the displacement of midline *** basal ganglia hypertensive intracerebral hemorrhage patients showed a relative decrease in the density of hematoma,with the extent of edema gradually reduced,the focus showed a high-density shadow

关键词： Basal ganglia hypertensive intracerebral hemorrhage MSCT grading Prognosis Correlation analysis

Intrinsic and Extrinsic Value for English Learning: Mediation Effects of SelfEfficacy in Chinese EFL Context

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Chinese Journal of Applied Linguistics 2018年第2期41卷 150-168,256页

作者： lihong ma Xiaofeng Du Jian LIU Beijing Normal University Tianjin University of Technology and Education

The present study examined how students＇ intrinsic and extrinsic value promotes their foreign language proficiency via the mediation effect of self-efficacy beliefs. A total of 1,036 Chinese eighth graders answered an English proficiency test and questionnaires assessing motivational beliefs. Structural equation modelling results with bootstrapping procedures revealed that intrinsic value can directly and indirectly influence foreign language proficiency via partial mediation effect of self-efficacy while extrinsic value can only directly influence foreign language proficiency with a small magnitude. Moreover, there is no gender difference in the mediation model. Our findings suggested that intrinsic value can help students improve foreign language proficiency by improving their self-efficacy beliefs. The findings contribute to the documents of self-determination theory and hold substantive theoretical and practical implications for foreign language teachers.

关键词： intrinsic value extrinsic value self-efflcacy mediation effect self-determination theory

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基于论证的英语写作思辨能力评价效度研究

现代外语 2021年第5期44卷 694-703页

作者：马利红北京科技大学外国语学院北京市海淀区100085

英语写作思辨能力评价研究已引起学界广泛关注,但评价的有效性尚待验证。文章通过基于论证的效度验证模式对英语写作思辨能力评价进行效度验证。913名学生参加了测试,两组评分员参与了评分。再以写作能力及思辨能力测试结果为校标进行... 详细信息

英语写作思辨能力评价研究已引起学界广泛关注,但评价的有效性尚待验证。文章通过基于论证的效度验证模式对英语写作思辨能力评价进行效度验证。913名学生参加了测试,两组评分员参与了评分。再以写作能力及思辨能力测试结果为校标进行皮尔逊相关分析,并通过评分员访谈、评分员有声思维、受试答题过程分析等方法收集效度数据。质性和量化数据分析结果为英语写作思辨能力评价提供了评分推论和外推推论环节的效度证据,这对英语教学中的思辨能力培养和评价研究具有启示意义。

关键词：基于论证的效度验证模式思辨能力英语写作效度

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市场机制在浙江资源类公共物品供应中的运用

浙江社会科学 2009年第12期 2-9页

作者：马力宏中共浙江省委党校浙江省社会科学重点研究基地"科学发展观与浙江发展研究中心" 副主任教授杭州311121

受资源短缺矛盾的制约,提高资源类公共物品的利用效率在我国变得越来越紧迫。为此,就必须对资源类公共物品的供应方式加以调整,更好地发挥市场机制在资源类公共物品供应中的作用。文章分析了浙江资源类公共物品市场化配置的现实可行性,... 详细信息

受资源短缺矛盾的制约,提高资源类公共物品的利用效率在我国变得越来越紧迫。为此,就必须对资源类公共物品的供应方式加以调整,更好地发挥市场机制在资源类公共物品供应中的作用。文章分析了浙江资源类公共物品市场化配置的现实可行性,描述了浙江运用市场机制供应资源类公共物品的实践,对浙江运用市场力量提高公共资源供应效率的机制作了重点分析。

关键词：市场机制资源类公共物品浙江的实践

Qishen capsule inhibites apoptosis of H9C2 cardiomyocytes concentration-dependently under hypoxia and serum deprivation conditions

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中国循环杂志 2016年第Z1期31卷 -页

作者： Peipei Lu Jie ma Caixia Guo lihong ma Fuwai Hospital National Center for Cardiovascular Disease Chinese Academy of Medical Sciences and Peking Union Medical Colege Beijing China