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Relative accuracy of spatial predictive models for lynx Lynx canadensis derived using logistic regression-AIC,multiple criteria evaluation and Bayesian approaches

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Current Zoology 2009年第1期55卷 28-40页

作者： hejun kang Shelley M. ALEXANDER Center for Spatial Analysis School of Geography and Earth Sciences McMaster University Hamilton ON Canada L8S 4K1 Department of Geography University of Calgary Calgary AB Canada T2N 1N4

We compared probability surfaces derived using one set of environmental variables in three Geographic Information Systems （GIS） -based approaches： logistic regression and Akaike＇s Information Criterion （AIC）, Multiple Criteria Evaluation （MCE）, and Bayesian Analysis （specifically Dempster-Shafer theory）. We used lynx Lynx canadensis as our focal species, and developed our environment relationship model using track data collected in Banff National Park, Alberta, Canada, during winters from 1997 to 2000. The accuracy of the three spatial models were compared using a contingency table method. We determined the percentage of cases in which both presence and absence points were correctly classified （overall accuracy）, the failure to predict a species where it occurred （omission error） and the prediction of presence where there was absence （commission error）. Our overall accuracy showed the logistic regression approach was the most accurate （74.51%）. The multiple criteria evaluation was intermediate （39.22%）, while the Dempster-Shafer （D-S） theory model was the poorest （29.90%）. However, omission and commission error tell us a different story： logistic regression had the lowest commission error, while D-S theory produced the lowest omission error. Our results provide evidence that habitat modellers should evaluate all three error measures when ascribing confidence in their model. We suggest that for our study area at least, the logistic regression model is optimal. However, where sample size is small or the species is very rare, it may also be useful to explore and/or use a more ecologically cautious modelling approach （e.g. Dempster-Shafer） that would over-predict, protect more sites, and thereby minimize the risk of missing critical habitat in conservation plans .

关键词： Bayesian Analysis (Dempster-Shafer) GIS Habitat Logistic regression Lynx canadensis Multiple Criteria Evaluation (MCE)

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Social integration: How is it related to self-rated health?

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Advances in Aging Research 2013年第1期2卷 10-20页

作者： hejun kang Yvonne L. Michael Department of Epidemiology and Biostatistics Drexel University Philadelphia USA Department of Geography University of Idaho Moscow USA

Social integration has well-established health benefits among older adults in observational studies. However, interventions designed to increase social integration have not improved health suggesting important knowledge gaps on how social integration influences health outcomes. This study developed a new measure of social integration, daily social contact, capturing the interpersonal nature of social integration and mobility of individuals, and providing a direct assessment of individuals’ real-time access to companionship and social support. The data used is the 2006-2007 American Time Use Survey (ATUS), which surveyed 25,191 individuals aged 15 years and older (n = 4378 aged 65 years and older). Generalized ordinal logistic regression analyses revealed positive, but non-parallel relationships between daily social contacts and the ordinal categories of self-rated health among older adults. This study may be used to identify populations that experience social exclusion, such that future research can determine more precisely how to intervene to improve health outcomes.

关键词： Daily Social Contact Social Integration Self-Rated Health Older Adults Generalized Ordinal Logistic Regression

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Early identification of stroke through deep learning with multi-modal human speech and movement data

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Neural Regeneration Research 2025年第1期20卷 234-241页

作者： Zijun Ou Haitao Wang Bin Zhang Haobang Liang Bei Hu Longlong Ren Yanjuan Liu Yuhu Zhang Chengbo Dai hejun Wu Weifeng Li Xin Li School of Computer Science and Engineering Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina Department of Neurology Guangdong Neuroscience InstituteGuangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouGuangdong ProvinceChina Department of Emergency Medicine Guangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouGuangdong ProvinceChina

Early identification and treatment of stroke can greatly improve patient outcomes and quality of *** clinical tests such as the Cincinnati Pre-hospital Stroke Scale(CPSS)and the Face Arm Speech Test(FAST)are commonly used for stroke screening,accurate administration is dependent on specialized *** this study,we proposed a novel multimodal deep learning approach,based on the FAST,for assessing suspected stroke patients exhibiting symptoms such as limb weakness,facial paresis,and speech disorders in acute *** collected a dataset comprising videos and audio recordings of emergency room patients performing designated limb movements,facial expressions,and speech tests based on the *** compared the constructed deep learning model,which was designed to process multi-modal datasets,with six prior models that achieved good action classification performance,including the I3D,SlowFast,X3D,TPN,TimeSformer,and *** found that the findings of our deep learning model had a higher clinical value compared with the other ***,the multi-modal model outperformed its single-module variants,highlighting the benefit of utilizing multiple types of patient data,such as action videos and speech *** results indicate that a multi-modal deep learning model combined with the FAST could greatly improve the accuracy and sensitivity of early stroke identification of stroke,thus providing a practical and powerful tool for assessing stroke patients in an emergency clinical setting.

关键词： artificial intelligence deep learning diagnosis early detection FAST screening stroke

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选择性激光小梁成形术治疗硅油填充继发青光眼的疗效及安全性

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中国医师进修杂志 2017年第12期40卷 1072-1075页

作者：邢杰王文曹丽杰曲龙嘉康贺军杨楠武警辽宁总队大连医院眼科 116013 解放军第二一0医院眼科大连116021

目的观察评估选择性激光小梁成形术（SLT）治疗硅油填充继发青光眼（SOG）的疗效性及安全性.方法收集2014年6月至2016年4月确诊为SOG患者45例（45只眼）,记录患者基本情况.45例患者按随机数字表法分为两组,其中SLT治疗组22例（22只眼... 详细信息

目的观察评估选择性激光小梁成形术（SLT）治疗硅油填充继发青光眼（SOG）的疗效性及安全性.方法收集2014年6月至2016年4月确诊为SOG患者45例（45只眼）,记录患者基本情况.45例患者按随机数字表法分为两组,其中SLT治疗组22例（22只眼）,单纯药物治疗组23例（23只眼）,于治疗后1 d、1周、2周及1、2、3、4、5、6个月进行眼压记录,观察评估其变化情况.结果治疗后1周、2周及1、2、3、4、5、6个月,SLT治疗组眼压下降分别为（11.47 ± 2.23）、（11.27 ± 2.59）、（10.43 ± 2.55）、（11.93 ± 2.71）、（13.75 ± 2.57）、（13.93 ± 2.65）、（10.45 ± 2.53）、（12.73 ± 2.86）mmHg（1 mmHg=0.133 kPa）,单纯药物治疗组下降分别为（7.53 ± 3.29）、（9.57 ± 3.49）、（8.78 ± 4.21）、（8.74 ± 3.86）、（6.12 ± 4.41）、（7.84 ± 3.26）、（8.84 ± 4.25）、（8.24 ± 3.56） mmHg.治疗后1周及1、2、3、4、5、6个月两组眼压下降比较差异有统计学意义（t=4.17、1.38、2.89、6.32、3.89、5.32、5.19,P〈0.05或〈0.01）.结论 SLT是治疗SOG患者安全有效的选择.

关键词：青光眼选择性激光小梁成形术硅油对比研究

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On Existence of the Even L_(p)Gaussian Minkowski Problem for p>n

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Chinese Annals of Mathematics,Series B 2024年第2期45卷 179-192页

作者： hejun WANG School of Mathematics and Statistics Shandong Normal UniversityJi'nan 250014China

This paper concerns the even L_(p)Gaussian Minkowski problem in n-dimensional Euclidean space R^(n).The existence of the solution to the even L_(p)Guassian Minkowski problem for p>n is obtained.

关键词： Convex body Existence L_(p)Gaussian surface area measure The even L_(p)Gaussian Minkowski problem

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复方倍他米松联合CO_(2)点阵激光、PDL激光治疗瘢痕疙瘩疗效分析

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武警医学 2022年第7期33卷 618-622页

作者：李妍胥学冰康贺军唐亦复史昌乾武警辽宁总队医院烧伤科沈阳110034 武警辽宁总队医院心理科沈阳110034 武警辽宁总队医院药局沈阳110034

目的观察分析复方倍他米松(商品名得宝松)联合CO_(2)点阵激光、PDL激光治疗瘢痕疙瘩的临床疗效。方法选取2018-04至2019-12武警辽宁总队医院接受治疗的111例瘢痕疙瘩患者作为研究对象,随机分为A组、B组、C组,每组37例。A组采用CO_(2)点... 详细信息

目的观察分析复方倍他米松(商品名得宝松)联合CO_(2)点阵激光、PDL激光治疗瘢痕疙瘩的临床疗效。方法选取2018-04至2019-12武警辽宁总队医院接受治疗的111例瘢痕疙瘩患者作为研究对象,随机分为A组、B组、C组,每组37例。A组采用CO_(2)点阵激光+PDL激光治疗,B组采用CO_(2)点阵激光+得宝松治疗,C组采用得宝松联合CO_(2)点阵激光+PDL激光治疗,每4周为1疗程,共3个疗程。所有患者在治疗6个月后进行观察,观察3组治疗前后瘢痕各维度评分(VSS)、转化生长因子β_(1)(TGF-β_(1))、基质金属蛋白酶9(MMP-9)含量变化,以及临床疗效、不良反应及复发率情况。结果治疗6个月后,三组色泽、血管分布、瘢痕柔软度、厚度、VSS总分较治疗前显著降低,其中C组显著优于A组、B组(P<0.05),但B组和C组未见统计学差异;A组、B组、C组总有效率分别为86.49%、83.78%、94.60%,C组疗效显著优于A组和B组(P<0.05);治疗1个月后,三组TGF-β_(1)、MMP-9表达含量较治疗前显著改善(P<0.05),C组TGF-β_(1)、MMP-9表达显著低于A组和B组(P<0.05),而A组和B组比较,未见统计学差异;在治疗后1个月时,A组2例瘢痕疙瘩治疗区域出现部分色素沉着,B组3例出现颜色发红、血管丰富情况,其余患者均未出现疼痛、血肿、瘙痒、皮肤感染、色素沉着及皮肤萎缩等不良反应,且未见复发;在治疗6个月时,患者色素沉着及颜色发红等不良反应基本消退,但三组均出现部分瘢痕疙瘩复发情况,复发率分别为8.11%(3例,A组)、5.41%(2例,B组)及2.70%(1例,C组)(χ^(2)=0.24,P=0.98)。结论得宝松联合CO_(2)点阵激光、PDL治疗瘢痕疙瘩疗效确切,安全性高,有效促进瘢痕组织恢复,值得临床推广。

关键词：瘢痕疙瘩 CO_(2)点阵激光 PDL激光临床疗效复发率

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Magnetic Moments and Electromagnetic Radii of Nucleon and △（1232） in an Extended Goldstone-Boson-Exchange Model

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Communications in Theoretical Physics 2005年第1期43卷 139-146页

作者： hejun Yu-Bing InstituteofHighEnergyPhysics theChineseAcademyofSciencesP.O.Box918-4Beijing100039China InstituteofHighEnergyPhysics theChineseAcademyofSciencesP.O.Box918-4Beijing100039China／／CCAST（WorldLaboratory）P.O.Box8730Beijing100080China

We derive the exchange currents of pseudoscalar, vector, and scalar mesons from Feynman diagrams, and use them to calculate the magnetic form factors of nucleon and △(1232). The magnetic moments and electromagnetic radii are obtained by using those form factors and the parameters determined from the masses of nucleon and △(1232).We find the magnetic moments and electromagnetic radii of nucleon and △(1232) can be produced very well in the extended Goldstone-Boson-exchange model in which all of pseudoscalar, vector, and scalar meson nonet are *** magnetic moments of △(1232) are closer to experiment values and results from lattice calculation than the results obtained by the model without other mesons except for pion and sigma.

关键词： magnetic moments electromagnetic radii nucleon and Δ(1232) extendedgoldstone-boson-exchange model

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Inequalities of Eigenvalues for the Dirac Operator on Compact Complex Spin Submanifolds in Complex Projective Spaces

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Chinese Annals of Mathematics,Series B 2008年第2期29卷 165-178页

作者： Daguang CHEN hejun SUN Department of Mathematical Sciences Tsinghua University Beijing 100084 China Department of Applied Mathematics College of Science Nanjing University of Science and Technology Nanjing 210094 China

For a compact complex spin manifold M with a holomorphic isometric embed- ding into the complex projective space,the authors obtain the extrinsic estimates from above and below for eigenvalues of the Dirac operator,which depend on the data of an isometric embedding of ***,from the inequalities of eigenvalues,the gaps of the eigenvalues and the ratio of the eigenvalues are obtained.

关键词： Eigenvalue Dirac operator Yang-type inequality Test spinor

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Explicit Confinement Effect on the Helicity Amplitudes of the Low-Lying Nucleon Resonances

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Communications in Theoretical Physics 2003年第3X期40卷 345-348页

作者： DONGYu-Bing hejun InstituteofHighEnergyPhysics TheChineseAcademyofSciencesP.O.Box918Beijing100039China

Calculations of helicity amplitudes for the low-lying nucleon resonances are displayed based on a non-relativistic constituent quark model with a harmonic oscillator confinement. The explicit effect of quark confinement is shown. Our results show that the effect plays sizable role on some transition amplitudes of S11 (1535) and D13(1520) resonances. The effect on the △(1232) transition amplitudes is less than 10%. However, the effect on the Roper resonance is remarkable but is inconclusive.

关键词：权夸克模型近似约束效应谐振跃迁螺旋性振幅 QCD 量子色动力学核子结构函数

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Different Interaction Models in Strong Decays of Negative Parity N^＊ ResonancesUnder 2 GeV

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Communications in Theoretical Physics 2004年第6期41卷 921-924页

作者： hejun DONGYu-Bing InstituteofHighEnergyPhysics theChineseAcademyofSciencesBeijing100039tAhina

In this paper, by using harmonic-oscillator wave functions of different interaction models, i.e. OPE (onepion-exchange model), OPsE (only pseudoscalar meson exchange model), the extended GBE (Goldstone-boson-exchange model including vector and scalar mesons), and OGE (one-gluon-exchange model), we calculate and compare the strong decays of negative parity N* resonances under 2 GeV. We find that the conventional mixing angles are correct, and GBE and OGE are obviously superior to OPE and OPsE.

关键词： interaction models strong decay N* resonance

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