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Immune algorithm for discretization of decision systems in rough set theory

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第4期7卷 602-606页

作者： JIA ping DAI jian-hua CHEN Wei-dong PAN Yun-he ZHU Miao-liang Institute of Artificial Intelligence Zhejiang University Hangzhou 310027 China

Rough set theory plays an important role in knowledge discovery, but cannot deal with continuous attributes, thus discretization is a problem which we cannot neglect. And discretization of decision systems in rough set theory has some particular characteristics. Consistency must be satisfied and cuts for discretization is expected to be as small as possible. Consistent and minimal discretization problem is NP-complete. In this paper, an immune algorithm for the problem is proposed. The correctness and effectiveness were shown in experiments. The discretization method presented in this paper can also be used as a data pre- treating step for other symbolic knowledge discovery or machine learning methods other than rough set theory.

关键词： Rough sets Discretization Immune algorithm Decision system

Estimation of mountain block recharge on the northern Tianshan Mountains using numerical modeling

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Journal of Mountain Science 2021年第7期18卷 1794-1810页

作者： ping jian-hua ZHU Ya-qiang MEI Xue-mei LENG Wei LI Sheng ZHAO Ji-chang College of Earth Science and Technology Zhengzhou UniversityZhengzhou 450001China School of Water Conservancy Engineering Zhengzhou UniversityZhengzhou 450001China College of Geology and Exploration Engineering Xinjiang UniversityUrumqi 830047China China Institute of Geo-Environmental Monitoring Beijing 100081China

Mountain block recharge(MBR),an important water resource,is a widespread process that recharges lowland ***,little is known about MBR due to the limited climatic and geologic data in mountainous regions such as the northern central foothills of ***,we present an approach to quantify MBR through the combination of water balance calculations and numerical *** calculated from the water balance in the data-limited Tianshan Mountains is employed as a fluid-flux boundary condition in the numerical model of the *** verify the performance of the model,mean absolute error and root mean square error were *** show that the volume of water that is recharging the aquifer via MBR is 107.29 million m^(3)/yr,accounting for 2.2% of the total precipitation that falls in the ***,53.3% of that precipitation enters the plain aquifer via runoff,totaling 2,652.68 million m^(3)/*** lower volume of MBR is attributed to a major range-bounding anticline with apparent low permeability in the Tianshan *** numerical modeling of groundwater,MBR coming from bedrock was found to be significant,accounting for 14% of total aquifer recharge in the plain,only after the portion of runoff *** research contributes to a deeper understanding of MBR,and may provide instructions for estimating groundwater recharge in arid and semi-arid areas.

关键词： Mountain block recharge Water balance Numerical modeling Arid area Tianshan Mountains

Mapping the spatial distribution of fossil geothermal manifestations and assessment of geothermal potential of the Tangyin rift,Southeast of Taihang Mountain in China

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Journal of Mountain Science 2022年第8期19卷 2241-2259页

作者： MAHWA Joshua LI Da-jiang ping jian-hua LENG Wei TANG Jia-bo SHAO Dong-yun School of Water Conservancy and Engineering Zhengzhou UniversityZhengzhou 450001China Department of Geology College of Earth ScienceUniversity of DodomaBox 11090DodomaTanzania Power China Henan Engineering CO. LTDNo.30 Changchun RoadHigh and New Technology Industries Development ZoneZhengzhou450001China Geothermal and Ecological Geology Research Centre Zhengzhou UniversityZhengzhou 450001China College of Ecology and Environment Zhengzhou UniversityZhengzhou 450001China Power China Geothermal Development CO. LTDNo.30 Changchun RoadHigh and New Technology Industries Development ZoneZhengzhou450001China

The spatial prediction of geothermal sites along the southeast side of Taihang Mountain in the Tangyin rift is a critical goal in the development of renewable energy resources in cities such as Hebi in Henan province,which has significant potential for geothermal energy production due to the existence of deep faults and Cenozoic *** study aimed to delineate areas with high geothermal manifestations for detailed geothermal exploration and well-test *** define favorable zones for geothermal potentiality,multi-source datasets were chosen to generate evidence thematic layers that demonstrate the distribution of geothermal anomalies such as geologic maps,structural maps,Land Surface Temperature maps(LST),and hydrothermal mineral alterations *** remote sensing and Geographical Information System(GIS)approaches were integrated to map fossil geothermal manifestations and appraise the promising geothermal zones from Landsat 8 OLI/TIRS and Advanced Spaceborne Thermal Emission and Reflection Radiometer-Digital Elevation Model(ASTER-DEM)dataset using the Analytic Hierarchy Process(AHP),which is one of the Mult-criteria Decision Making *** show LST values ranging from 22.6℃ to 45.4℃,with the highest values found along the faults and volcanic *** hydrothermal alteration minerals discriminated from band ratios of 4/2,6/5,and 6/7 for iron oxide,ferrous minerals,and clays reveal the presence of high amount of montmorillonite and illite minerals along the faults and volcanoes which are related to hot fluid circulation from *** analysis shows that the major structural trend follows the NNE Tangdong and Tangxi faults,with high density on the west side of the Tangxi fault where there is good exposure of outcrop but less fault density on the east side due to sedimentation in a low land which may conceal geological ***,all the thematic layers of geothermal factors were reclassified,ranked,and integrated by the weight o

关键词： Geothermal potential Remote Sensing GIS Geological structures Alteration minerals Land surface temperature

γ-Secretase Inhibitor, DAPT Inhibits Self-renewal and Stemness Maintenance of Ovarian Cancer Stem-like Cells In Vitro

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Chinese Journal of Cancer Research 2011年第2期23卷 140-146页

作者： Li-yu jiang Xiao-lei Zhang ping Du jian-hua Zheng Department of Obstetrics and Gynecology the First Affiliated Hospital Harbin Medical University Harbin 150001 China

Objective: The Notch signaling pathway plays an important role in the stem cell signaling network and contributes to tumorigenesis. However, the functions of Notch signaling in ovarian cancer stem cells (OCSCs) are not well understood. We aimed to investigate the effects of Notch blockade on self-renewal and stemness maintenance of OCSCs. Methods: Ovarian cancer stem-like cells were enriched from ovarian cancer cell lines in serum-free medium. A γ-secretase inhibitor, (DAPT), was used to block Notch signaling. MTT assays were performed to assess self-renewal and proliferation inhibition, flow cytometry was performed to analyze cell surface marker and immunofluorescence, Western Blot and Real-time RT-PCR assays were performed to detect Oct4 and Sox2 protein and mRNA expression of the Ovarian cancer stem-like cells treated with DAPT. Results: Notch blockade markedly inhibits self-renewal and proliferation of ovarian cancer stem-like cells, significantly downregulates the expression of OCSCs-specific surface markers, and reduces protein and mRNA expression of Oct4 and Sox2 in OCSC-like cells. Conclusion: Our results suggest that Notch signaling is not only critical for the self-renewal and proliferation of OCSCs, but also for the stemness maintenance of OCSCs. The γ-secretase inhibitor is a promising treatment targeting OCSCs.

关键词： Ovarian cancer stem cells (OCSCs) Notch signaling pathway γ-secretase inhibitor

135MW全浸式蒸发冷却电机定子的绝缘结构

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高电压技术 2009年第6期35卷 1333-1337页

作者：栾茹平建华顾国彪北京建筑工程学院北京100044 中国科学院电工研究所北京100080

为了将拥有我国自主知识产权的蒸发冷却技术应用于高电压、大容量的汽轮发电机,并作为主力机组,需要解决定子绝缘结构的合理设计问题。全浸式蒸发冷却定子需要利用蒸发冷却介质的绝缘性能,大幅度减薄定子主绝缘的厚度,实现冷却与绝缘的... 详细信息

为了将拥有我国自主知识产权的蒸发冷却技术应用于高电压、大容量的汽轮发电机,并作为主力机组,需要解决定子绝缘结构的合理设计问题。全浸式蒸发冷却定子需要利用蒸发冷却介质的绝缘性能,大幅度减薄定子主绝缘的厚度,实现冷却与绝缘的双重功效。为此运用有限元数值仿真理论,首先详细计算并分析了该冷却方式下的定子绝缘结构内的电场与温度场,总结其分布规律与特点,证明了135MW全浸式蒸发冷却汽轮发电机主绝缘减薄的的合理性与可能性。这些仿真计算的结果通过了试验模型的检验,是合理可靠的,在此基础上提出定子主绝缘厚度的合理设计值以及对应的电流密度。研究结果值得国内制造业的借鉴。

关键词：蒸发冷却定子绝缘电场温度场试验数值仿真

Cerebellar interposed nucleus lesions suppress lymphocyte function and this effect is mediated by cerebellohypothalamic glutamatergic projections

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Cerebellar interposed nucleus lesions suppress lymphocyte fu...

考虑中间主应力影响时条形地基极限承载力公式

中国神经科学学会第九届全国学术会议暨第五次会员代表大会

作者： Yu-ping PENG~*,jian-hua LU,jian QIU,Hai-Nv MAO,Yi-hua QIU Department of Physiology,School of Medicine,Nantong University,Nantong 226001,China

＜正＞Objective The cerebellum has been well known as a structure of subcortical motor ***,we provide new evidence for cerebellar immunomodulation and pathway mediating the *** The cerebellar interposed nuclei（IN）,one of three cerebellar nuclei were bilaterally lesioned with kainic acid（KA） *** of T,B and natural killer cells were measured by MTT,ELISA and flow cytometry,respectively. An anterograde tracing with dextran-texas red（Dex-TR） from the cerebellar IN to the hypothalamus was used to demonstrate a direct cerebellohypothalamic projection.A retrograde tracing with fluoro-ruby from the hypothalamus to the cerebellar IN combined with immunofluorescence of glutamate in the IN was employed to determine glutamatergic cerebellohypothalamic ***（1） On days 8,16 and 32 after KA injection in the IN of rats,lymphocyte percentage in peripheral leukocytes,concanavalin A-induced lymphocyte proliferation,serum sheep red blood cell-specific IgM antibody and natural killer cell toxicity were significantly attenuated with respect to IN-saline control rats.（2） On a series of brain coronal sections from the cerebellum（injected with Dex-TR in the IN） to the hypothalamus,we observed that Dex-TR-labeled nerve fibers originating from cerebellar IN neurons mostly terminated in lateral hypothalamic area（LHA）.The retrograde tracing from the LHA to the cerebellar IN and immunofluorescence of glutamate on cerebellar sections showed that the cerebellohypothalamic projections had glutamatergic fibers.（3） Reduction of the cerebellohypothalamic glutamatergic projections by injection of glutaminase inhibitor 6-diazo-5-oxo-1-norleucine in the bilateral cerebellar IN resulted in significant attenuation of both lymphocyte number and proliferation,which was consistent with those caused by the cerebellar IN lesions with *** The cerebellum participates in modulation of immune function and this effect is mediated by cerebellohypothalam

关键词： cerebellum lymphocyte cerebellohypothalamic projection neuroimmunomodulation

来源： cnki会议评论

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上海交通大学学报 2003年第4期37卷 552-555页

作者：周小平王建华上海交通大学建筑工程与力学学院上海200030

基于 Mohr- Coulomb理论的地基极限承载力公式 ,没有考虑中间主应力的影响 .利用双剪强度理论建立了考虑中间主应力影响时的地基极限承载力公式 .推导了凝聚力和基础两侧土的超载影响及自重作用影响的理论公式 .以条形基础为例 ,计算了... 详细信息

基于 Mohr- Coulomb理论的地基极限承载力公式 ,没有考虑中间主应力的影响 .利用双剪强度理论建立了考虑中间主应力影响时的地基极限承载力公式 .推导了凝聚力和基础两侧土的超载影响及自重作用影响的理论公式 .以条形基础为例 ,计算了考虑中间主应力对地基极限承载力的影响 .研究结果表明 ,考虑中间主应力影响。

关键词：中间主应力地基极限承载力双剪强度理论

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自适应BP神经网络对黄河下游洪水位的预报

人民黄河 2005年第12期27卷 40-41,50页

作者：李升曹剑锋平建华吉林大学环境与资源学院吉林长春130026

利用黄河下游多水文站的多年水位资料,用自适应BP神经网络对艾山水文站的水位进行预测,同时与逐步回归分析以及普通BP神经网络得到的结果对比,结果表明:①自适应BP神经网络的预报精度高于普通BP神经网络、逐步回归法,尤其对最高洪水水... 详细信息

利用黄河下游多水文站的多年水位资料,用自适应BP神经网络对艾山水文站的水位进行预测,同时与逐步回归分析以及普通BP神经网络得到的结果对比,结果表明:①自适应BP神经网络的预报精度高于普通BP神经网络、逐步回归法,尤其对最高洪水水位的预报精度有较大的提高;②普通BP神经网络存在易陷入死循环、收敛速度慢、对神经元个数依赖大等缺点,可以利用学习率自适应调整和动量法改进BP神经网络;③建议在补充、完善资料的基础上,将神经网络与时间序列相结合,加强黄河下游洪水水位预报的研究和实验,进一步提高预报精度。

关键词： BP神经网络水位预测洪水水位黄河下游

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黄河下游悬河段断流对沿岸地下水影响评价

资源科学 2005年第5期27卷 77-83页

作者：曹剑峰冶雪艳姜纪沂平建华李升吉林大学环境与资源学院长春130026

黄河下游悬河段地下水系统分布面积29288·27km2,含有两个含水层组。浅层含水层组赋存潜水和微承压水,中深层含水层组赋存承压水;并对含水介质结构、边界条件及地下水流态进行了研究,建立了水文地质概念模型,构建了三维地下水流数学模... 详细信息

黄河下游悬河段地下水系统分布面积29288·27km2,含有两个含水层组。浅层含水层组赋存潜水和微承压水,中深层含水层组赋存承压水;并对含水介质结构、边界条件及地下水流态进行了研究,建立了水文地质概念模型,构建了三维地下水流数学模型。通过对数学模型的识别和验证,进行了悬河段地表水、地下水转化关系的模拟研究;预测了黄河下游在不同的断流时间和断流河段长度下,黄河侧渗量的变化趋势。模拟计算结果表明,花园口站—河口段全年断流时,黄河悬河段无侧渗补给;断流300天时,黄河全年侧渗量为2·98×108m3,较现状年侧渗量减少了52·25%。夹河滩站—河口段全年断流时,黄河全年侧渗量为1·6×108m3,较现状年侧渗量减少了74·4%;断流300天时,黄河全年侧渗量3·46×108m3,较现状年黄河侧渗量减少了44·5%。泺口站—河口段全年断流时,黄河全年侧渗量为4·83×108m3,较现状年黄河侧渗量减少了22·58%;断流300天时,黄河全年侧渗量为5·17×108m3,较现状年黄河侧渗量减少17·06%。利津站—河口段全年断流时,黄河全年侧渗量为6·15×108m3,较现状年黄河侧渗量仅减少1·5%。上述研究为水资源合理开发利用和黄河水量人工实时调控提供了依据。

关键词：黄河断流数值模拟模型黄河侧渗量影响评价地下水系统黄河下游悬河段断流影响评价水文地质概念模型水流数学模型沿岸合理开发利用