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高等数学研究 2024年第4期27卷 23-26,28页

作者：王福昌张丽娟防灾科技学院基础部河北三河065201

首先介绍微分恒等式法,然后利用这种方求出了二项分布、泊松分布、几何分布、负二项分布、Gamma分布和正态分布等常见随机变量的期望和方差,说明了方法的有效性.

关键词：微分恒等式期望方差

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qNMR法测定片剂苯磺酸氨氯地平的含量

实验与分析 2024年第3期2卷 55-60页

作者：张秀王丽娟扶晖北京大学分析测试中心北京100871

本文利用定量核磁共振波谱法(qNMR)建立了测定片剂苯磺酸氨氯地平含量的分析方法。片剂样品经研磨称量后,加入氘代甲醇为溶剂、1,3,5-三甲氧基苯作为内标物进行混合。混合物经涡旋、超声和离心后取上清液转移入核磁管,对样品采集核磁共... 详细信息

本文利用定量核磁共振波谱法(qNMR)建立了测定片剂苯磺酸氨氯地平含量的分析方法。片剂样品经研磨称量后,加入氘代甲醇为溶剂、1,3,5-三甲氧基苯作为内标物进行混合。混合物经涡旋、超声和离心后取上清液转移入核磁管,对样品采集核磁共振氢谱(1H-NMR)。氢谱中以苯磺酸氨氯地平位于δ5.41的谱峰为检测定量峰,1,3,5-三甲氧基苯位于δ 6.07的谱峰为内标定量峰建立绝对定量方法。1H-NMR实验参数为:90度单脉冲序列,脉冲延迟时间30 s,扫描次数32次,采样温度308 K。实验结果显示苯磺酸氨氯地平与内标物的摩尔比在0.42~8.38的范围内具有良好的线性关系(R2=0.9973),精密度和稳定性试验的相对标准偏差(RSD)分别为0.45%(n=7)和0.44%。对于片剂样品,整个方法(包括目标组份的提取和定量核磁检测)重复性试验RSD为1.69%(n=6);三个不同浓度的加标回收率分别为103.86%、101.20%和99.69%。应用本方法对8个市售品牌的苯磺酸氨氯地平片剂进行了含量测定,结果显示建立的qNMR方法准确度高,重复性好,简便快捷,为片剂药品绝对含量的测定提供了新方法。

关键词：定量核磁共振(qNMR) 片剂药品绝对定量苯磺酸氨氯地平

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隐蔽线索对基于时间前瞻记忆的影响

心理研究 2024年第1期17卷 15-25,53页

作者：王胤雅于洪娜任智王丽娟东北师范大学心理学院长春130024 吉林大学心理学系长春130024 宁波大学心理学系暨研究所宁波315211

本研究通过三个实验,从不同角度考察隐蔽线索对基于时间前瞻记忆的影响,以期进一步了解基于时间前瞻记忆的加工特点。实验1A旨在考察不同进行中任务线索条件下基于时间前瞻记忆的表现差异;实验1B旨在考察不同干扰任务条件下的线索对基... 详细信息

本研究通过三个实验,从不同角度考察隐蔽线索对基于时间前瞻记忆的影响,以期进一步了解基于时间前瞻记忆的加工特点。实验1A旨在考察不同进行中任务线索条件下基于时间前瞻记忆的表现差异;实验1B旨在考察不同干扰任务条件下的线索对基于时间前瞻记忆的影响;实验2旨在考察嵌入不同的前瞻记忆任务线索和进行中任务线索对基于时间前瞻记忆的影响。结果表明:(1)适当的隐蔽线索对个体的基于时间前瞻表现具有促进作用。对于提示回溯成分的隐蔽线索,时间线索无论隐藏在进行中任务中还是干扰任务中都显著提高被试基于时间前瞻记忆的表现。(2)与出现在干扰任务阶段中的线索相比,出现在进行中任务阶段中的线索更能提高个体基于时间前瞻记忆的表现,说明线索越临近目标时间,促进效应越大。(3)基于时间范式的线索能够促进基于时间前瞻记忆表现,基于事件的线索则不能。本研究结果支持随机游动模型。

关键词：基于时间前瞻记忆隐蔽线索随机游动模型任务范式时间监控

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Establishment of the South Asian High over the Indo-China Peninsula During Late Spring to Summer

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Advances in Atmospheric Sciences 2017年第2期34卷 169-180页

作者： lijuan wang Aiguo DAI Shuaihong GUO Jing GE Key Laboratory of Meteorological Disaster Ministry of Education/Joint International Research Laboratory of Climate and Environment Change/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters/Science and Technology Innovation Team on Climate Simulation and Forecast Nanjing University of Information Science and Technology Department of Atmospheric and Environmental Sciences University at AlbanySUNY National Center for Atmospheric Research Meteorological Observatory of No.95147 Unit of PLA

The establishment of the upper-level South Asian high(SAH) over the Indo-China Peninsula(ICP) during late boreal spring and its possible causes are investigated using long-term NCEP–NCAR and ERA-40 reanalysis and satellite-observed OLR data. Results show that, from early March to mid-April, deep convection stays south of ～6?N over the northern Sumatran islands. As the maximum solar radiation moves over the latitudes of the ICP(10?–20?N) in late April, the air over the ICP becomes unstable. It ascends over the ICP and descends over the adjacent waters to the east and west. This triggers deep convection over the ICP that induces large latent heating and strong updrafts and upper-level divergence, leading to the formation of an upper-level anticyclonic circulation and the SAH over the ICP. During early to mid-May, deep convection over the ICP intensifies and extends northwards to the adjacent waters. Strong latent heating from deep convection enhances and maintains the strong updrafts and upper-level divergence, and the SAH is fully established by mid-May. Thus, the seasonal maximum solar heating and the land–sea contrast around the ICP provide the basic conditions for deep convection to occur preferentially over the ICP, which leads to the formation of the SAH over the ICP from late April to mid-May. Simulations using Reg CM4 also indicate that the diabatic heating over the ICP is conducive to the generation and development of upperlevel anticyclonic circulation, which leads to an earlier establishment of the SAH.

关键词： South Asian high Indo-China Peninsula diabatic heating deep convection

School and community physical activity characteristics and moderate-to-vigorous physical activity among Chinese school-aged children： A multilevel path model analysis

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Journal of Sport and Health Science 2017年第4期6卷 416-422页

作者： lijuan wang Yan Tang Jiong Luo School of Physical Education and Sport Training Shanghai University of Sport Shanghai 200438 China Shanghai Research Center for Physical Fitness and Health of Children and Adolescents Shanghai University of Sport Shanghai 200438 China School of Physical Education Southwest University Chongqing 400715 China

Purpose: The purpose of this study was to examine the association between school and community physical activity(PA) characteristics and levels of moderate-to-vigorous physical activity(MVPA) among Chinese school ***: Data were obtained from the 2016 Physical Activity and Fitness in China—The Youth Study project. Participants were 80,928 school children(Grades 4–12; 39,747 boys, 41,181 girls; mean age = 13 years) and 935 physical education(PE) teachers who completed a study *** variables included both school-related factors(school-level PA support, availability of and access to PA facilities, and the duration of school PE classes) and community-related factors(the frequency of sports events, sports training opportunities, availability of sports clubs and organizations, and access to PA facilities). The dependent variable was the children's self-reported participation in MVPA. The data were analyzed,in 2017, via multilevel ***: PA support from school administrators was the only school-level factor significantly related to children's participation in ***'s perceptions of the frequency of community-sponsored sports events, availability of sports clubs and organizations, and convenient access to PA facilities were associated with a high level of MVPA participation. In regard to residency in urban and rural areas, children attending urban schools who perceived high availability of PA facilities were associated with a low level of participation in ***: School support for PA and community PA resources are associated with MVPA among Chinese school children. School PA facilities appear underutilized among urban schools as evidenced by low levels of MVPA among school children.

关键词： Facilities Physical activity support Physical education Rural areas Teachers Urban areas

Dynamic analysis and numerical simulation of Spider-Insect system with migration

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International Journal of Biomathematics 2019年第6期12卷 199-220页

作者： Hongling Jiang lijuan wang Hailong Yuan Institute of Mathematics and Information Science Baoji University of Arts and Sciences Baoji Shaanxi 721013P.R.China School of Arts and Sciences Shaanxi University of Science and Technology Xi'an Shaanxi 710021P.R.China

Taking the spider as a controller of the insects is a very important Green Agricultural *** established a partial differential equation model by adding diffusion term into classical Spider-Insect *** the fixed point index theory,the sufficient condition for the existence of positive solutions is *** on the method of parabolic equations,the persistence of positive solution is also ***,the theoretical results are verified by numerical *** work shows that intrinsic growth rate of an insect is an important factor that affects its existence and persistence under certain conditions.

关键词： Spider-Insect system dynamic analysis numerical simulation

A Novel 3D Metal Organic Framework Based on an Azolate Ligand

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Chemical Research in Chinese Universities 2014年第1期30卷 1-3页

作者： YIN Xinbo AN Tiance wang Yang ZHANG lijuan Laboratory of Advanced Materials Fudan University Shanghai 200438 P R. China

Metal organic frameworks（MOFs） have attracted much attention over the world during the last several decades[1-3].Constructed from metal ions and organic building units,MOFs have great properties in gas adsorption[4],catalysis[5],luminescence[6] and magnetism[7].By varying the metal salts and organic building units,numerous MOF structures with designed functionalities and expected properties can be *** them,zeolitic imidazolate frameworks（ZIFs） have been investigated greatly due to their high thermal and chemical stabilities and tunable porosities[8].ZIFs can be obtained with imidazolate compounds as organic building units,such as imidazole,benzimidazole and 2-methylimidazole[9].Zeolite structures are composed of tetrahedral Si（Al）O4 units,with Si-O-Si angle ca.145°.ZIFs possess imidazole,with M-IM-M（M-metal,IM=imidazole） angle close to 145°,resembling zeolite（Scheme 1）[10].

关键词： Metal-organic framework Azolate ligand Porosity dmp Topology

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基于一致性图的权重自适应多视角谱聚类算法

计算机工程 2024年第2期50卷 122-131页

作者：王丽娟邢津萍尹明郝志峰蔡瑞初温雯广东工业大学计算机学院广东广州510006 广东工业大学自动化学院广东广州510006 汕头大学广东汕头515063

随着移动设备和互联网的普及,多视角数据的采集和分享变得更加容易,其可以从多个视角更准确地描述数据。目前,一些多视角聚类算法忽略了不同视角间的一致性潜在知识和不同视角的重要性。针对该问题,提出一种平衡视角间一致性信息的多视... 详细信息

随着移动设备和互联网的普及,多视角数据的采集和分享变得更加容易,其可以从多个视角更准确地描述数据。目前,一些多视角聚类算法忽略了不同视角间的一致性潜在知识和不同视角的重要性。针对该问题,提出一种平衡视角间一致性信息的多视角聚类算法。首先通过调节视角权重学习视角间一致的共享相似度矩阵,提升共享矩阵的一致性,其中相关性强的视角具有的一致性信息更多,视角权重越大,在一致性学习中发挥的作用越大,而差异性大的视角其权重越小,在学习中发挥的作用越小。其次学习视角间的一致性样本嵌入以及不同视角的特征嵌入,并将特征嵌入中包含的多样性特征信息迁移到样本嵌入中,以此促进样本嵌入的一致性表达。在不同视角特征中包含多样性信息,可补充上述共享相似度矩阵学习中单一样本关系的不足。因此,采用二部图协同聚类,通过建立样本数据、样本嵌入和特征嵌入的关系图,学习样本的特征嵌入,并将其迁移到样本嵌入中。最后将图学习、谱聚类和特征嵌入学习整合到统一的框架中进行联合优化,得到最优的样本嵌入。实验结果表明,通过对样本嵌入进行K-means聚类,将该算法运行于5个真实数据集并与7种聚类算法对比,其中在3-Sources、Yale、MRSCV1数据集上的正确率均高于对比算法5%以上,验证了该算法的有效性。

关键词：多视角聚类一致性学习权重自适应协同聚类谱聚类

基于臭氧杀菌技术的旋耕式土壤消毒机设计与试验

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中国农机化学报 2024年第4期45卷 244-249,265页

作者：陶丽欢刘元义毕玉亮李新澳王丽娟张策山东理工大学农业工程与食品科学学院山东淄博255000 潍坊鑫耐尔农业机械有限公司山东淄博255000

针对设施农业中连作引起的土壤污染、线虫增加等问题,设计一款基于臭氧杀菌技术的旋耕式土壤消毒机。介绍旋耕式土壤消毒机整体结构,对臭氧充气铲进行受力分析,获得臭氧注入土壤的运动学条件,确定充气铲结构参数;以XC2-24R-C控制器为电... 详细信息

针对设施农业中连作引起的土壤污染、线虫增加等问题,设计一款基于臭氧杀菌技术的旋耕式土壤消毒机。介绍旋耕式土壤消毒机整体结构,对臭氧充气铲进行受力分析,获得臭氧注入土壤的运动学条件,确定充气铲结构参数;以XC2-24R-C控制器为电路控制模块核心元件,采用高压放电法制取臭氧,实现臭氧发生器正常运行;利用SolidWorks软件构建整机结构模型,进行样机研制与试验。以根结线虫为试验对象,相同的试验条件下,常规耕整1次的线虫消退率为2.96%,臭氧消毒处理后根结线虫消退率和防治效率最高可达84.93%和84.47%,较常规耕作线虫消退率提高81.97%。

关键词：设施农业土壤消毒机臭氧消毒臭氧充气铲根结线虫

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全民健身公共数据确权授权及使用的中国方案设计研究

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体育科学 2024年第4期44卷 89-96,F0003页

作者：张咪何元春池骋张政龙杨可鑫王丽娟哈尔滨体育学院研究生院黑龙江哈尔滨150008 厦门大学体育教学部福建厦门361005 厦门大学马克思主义学院福建厦门361005

数据确权授权是数据流通和共享的基础,但当下我国全民健身公共数据确权授权存在诸多困境。借助访谈、文本分析及案例研究等方法,结合劳动赋权论、“自物权-他物权”和“著作权-邻接权”及我国城乡土地制度改革中的土地所有权、承包权、... 详细信息

数据确权授权是数据流通和共享的基础,但当下我国全民健身公共数据确权授权存在诸多困境。借助访谈、文本分析及案例研究等方法,结合劳动赋权论、“自物权-他物权”和“著作权-邻接权”及我国城乡土地制度改革中的土地所有权、承包权、经营权的“三权”分置模式,基于“数据二十条”及全民健身公共数据特征的公共体育数据确权授权制度构建了中国方案。这对于明晰确权机构归属、权利主体及其主要权能和实现方式意义深远,也是助推“数据二十条”中纸面权利真正落地的应因之道。规制路径有:科学界定全民健身公共数据确权授权及使用中的法律概念;加强顶层设计,为全民健身公共数据确权授权路径建构“试制度、探新路”;明晰所有权、使用权和管理权,合理制定全民健身公共数据确权授权地方性行政法规;分类分级管理,确保全民健身公共数据安全、合规和有效利用;努力提升全民健身公共数据要素市场安全治理水平等。

关键词：全民健身公共数据确权授权中国方案