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基于BIM的工程估价课程设计创新研究

价值工程 2018年第13期37卷 210-212页

作者：张立陈翔李养成李刚西安工业大学建筑工程学院西安710021 军委后勤保障部工程兵第四设计研究院北京100036

本文在国外BIM教学实践的基础上,对陕西省内建筑类院校以及开设工程管理专业的院校进行问卷调查和实地走访发现,在BIM的教学实践中,和工程估价结合的还不完善。因此构建了基于BIM的工程估价课程设计的方案,并将其分为准备阶段、模型设... 详细信息

本文在国外BIM教学实践的基础上,对陕西省内建筑类院校以及开设工程管理专业的院校进行问卷调查和实地走访发现,在BIM的教学实践中,和工程估价结合的还不完善。因此构建了基于BIM的工程估价课程设计的方案,并将其分为准备阶段、模型设计阶段、招标投标阶段。其中BIM的应用体现在模型设计阶段、招标投标阶段。最后提出BIM融入工程估价课程设计的实施途径。

关键词： BIM 工程估价工程量清单

中国14家医院超/极早产儿早期预后的多中心调查

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中国医刊 2018年第12期53卷 1356-1362页

作者：孔祥永张珊封志纯徐凤丹童笑梅刘少君刘子源吕红艳杨李红吴素静巨容汪瑾彭立赵小林郭金珍李占魁曾淑娟丘惠娴温伟溪武辉李莹李楠贾文峥张雪峰郭果刘卫鹏王凤李改梅刘芳李薇赵晓英程红斌许云波陈文超尹欢丁艳洁王晓亮单瑞艳许平韩梅盈杨春燕陈铁强张路叶春华儿童器官功能衰竭北京市重点实验室陆军总医院附属八一儿童医院新生儿科北京100700 南方医科大学陆军总医院临床医学院北京100700 出生缺陷防控关键技术国家工程实验室北京100000 广东医学院广东东莞523808 北京大学第三医院新生儿科北京100191 邯郸市妇幼保健院新生儿科河北邯郸056001 成都市妇女儿童中心医院新生儿科四川成都610091 西北妇女儿童医院新生儿科陕西西安710003 深圳市龙岗中心医院儿科广东深圳518116 吉林大学第一医院儿科吉林长春130021 解放军第302医院新生儿科北京100039 海军总医院儿科北京100048 白求恩国际和平医院儿科河北石家庄050000 黄石市妇幼保健院儿科湖北黄石435003 烟台毓璜顶医院儿科山东烟台264000 聊城市人民医院儿科山东聊城252004 长沙妇幼保健院新生儿科湖南长沙410007

目的报道国内14家医院产科收治的出生胎龄24～31周早产儿的早期病死率和主要并发症发生率,并分析其影响因素。方法收集2013年1月1日至2014年12月31日国内14家医院产科收治的出生胎龄24～31周早产儿的一般资料,分析各胎龄组早产儿的病死... 详细信息

目的报道国内14家医院产科收治的出生胎龄24～31周早产儿的早期病死率和主要并发症发生率,并分析其影响因素。方法收集2013年1月1日至2014年12月31日国内14家医院产科收治的出生胎龄24～31周早产儿的一般资料,分析各胎龄组早产儿的病死率和主要并发症如支气管肺发育不良(bronchopulmonary dysplasia,BPD)、新生儿坏死性小肠结肠炎(necrotizing enterocolitis,NEC)、早产儿视网膜病(retinopathy of prematurity,ROP)、脑室内出血(intraventricular hemorrhage,IVH)和败血症等的发生率,并分析其影响因素。结果 24～31周各胎龄组早产儿的存活率分别为0、28.0%、84.8%、83.5%、87.4%、90.7%、93.9%和96.0%,无严重合并症存活率分别为0、8.0%、60.6%、53.2%、62.3%、67.9%、79.1%和85.8%,随着胎龄的增加存活率及无严重合并症存活率均增加。胎龄28周早产儿的产前激素使用率低于28～31周(28.0%～44.3%vs 49.7%～59.6%,P2.3%。早产儿胎龄越小,并发症发生率越高。24～31周早产儿总体呼吸窘迫综合征的发生率为58.5%, BPD的发生率为12.5%,NEC的发生率为3.9%,IVH的发生率为15.4%,ROP的发生率为5.4%,动脉导管未闭的发生率为28.4%,败血症的发生率为9.7%。低胎龄(OR=0.891,95%CI:0.796～0.999,P=0.0047)、低出生体重(OR=0.520,95%CI:0.420～0.643,P=0.000)、小于胎龄儿(OR=1.861,95%CI:1.148～3.017,P=0.012)和5分钟低Apgar评分(OR=1.947,95%CI:1.269～2.987,P=0.002)是早产儿死亡的高危因素。低胎龄(OR=0.666,95%CI:0.645～0.688,P=0.000)、低出生体重(OR=0.921,95%CI:0.851～0.997,P=0.041)、男性(OR=1.235,95%CI:1.132～1.347,P=0.000)、小于胎龄儿(OR=1.511,95%CI:1.300～1.755,P=0.000)、5分钟时低Apgar评分(OR=2.262,95%CI:1.950～2.624,P=0.000)以及围产期合并症如前置胎盘(OR=1.452,95%CI:1.202～1.753,P=0.000)、胎盘早剥(OR=1.380,95%CI:1.082～1.760,P=0.010)、妊娠期高血压疾病(OR=2.262,95%CI:1.950～2.624,P=0.000)、多胎(OR=1.162,95%CI:1.056～1.278,P=0.002)和产前发热(OR=1.367,95%CI:1.228～1.521,P=0.000)等是早产儿并发症发生的高危因素。产前使用激素治疗可以降低超早产儿和极早产儿的死亡风险(OR=0.615,95%CI:0.483～0.801,P=0.033)。结论胎龄26周以下超早产儿的存活率较低,26～31周早产儿的存活率虽逐渐接近发达国家,但严重并发症的发生率较高,提高对围产期合并症的预防和管理有助于改善此类早产儿的生存质量。

关键词：超早产儿极早产儿预后

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超深井筒开挖扰动应力响应特征分析

隧道与地下工程灾害防治 2020年第4期2卷 19-28页

作者：赵兴东李洋洋张姝婧陈玉民王成龙王玺东北大学采矿地压与控制研究中心辽宁沈阳110819 山东黄金集团有限公司山东济南250100 山东黄金集团有限公司烟台矿业事业部山东莱州261400 山东黄金集团有限公司深井开采实验室山东莱州261400

针对超深井筒围岩稳定性分析问题,以Mohr-Column强度准则为基础,采用弹塑性本构模型,通过缩减井筒围岩开挖边界的径向支护力模拟井筒开挖,以开挖扰动应力重分布与围岩破坏演化过程分析阐述井筒横剖面围岩扰动应力响应机制,同时分析与总... 详细信息

针对超深井筒围岩稳定性分析问题,以Mohr-Column强度准则为基础,采用弹塑性本构模型,通过缩减井筒围岩开挖边界的径向支护力模拟井筒开挖,以开挖扰动应力重分布与围岩破坏演化过程分析阐述井筒横剖面围岩扰动应力响应机制,同时分析与总结井筒纵剖面围岩扰动应力响应机制。随着竖井开凿深度的增加,其井筒围岩失稳主要表现为结构面控制型、应力控制型以及由结构面控制向应力控制转化3种类型;考虑新城金矿新主井井筒围岩工程地质条件,结合新主井井筒开挖围岩扰动应力响应机制,采用不同岩石屈服准则,计算新主井井筒围岩破坏纵深分布,以判定其失稳类型并沿井筒纵深区域划分。分析计算结果表明:新主井0~387 m深度井筒围岩失稳类型为结构面控制型,387~654.7 m深度井筒围岩为由结构面控制型向应力控制型失稳转化区域,而新主井654.7~1527 m深度井筒围岩失稳类型则为应力控制型为主,该研究为超深井筒围岩稳定性控制提供理论依据。

关键词：超深竖井扰动应力稳定性分析应力响应弹塑性力学

不同负重、坡度和速度背包任务下的背部肌肉疲劳评估

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科学技术与工程 2022年第16期22卷 6774-6779页

作者：陈盈田水承李开伟邹元西安科技大学安全科学与工程学院西安710054 中华大学工业管理系中国台湾新竹30012 陕西麟北煤业开发有限责任公司宝鸡721505

为评估不同条件下男、女性背包作业过程中的肌肉疲劳状况,设计男、女性背包徒步行走试验范式。分别测量任务前、后参与者背部肌肉肌力的最大随意收缩力f_(MVC)和f′_(MVC)、心率R_(h)、最大耐受时间T_(me),并给予博格体力消耗的主观疲... 详细信息

为评估不同条件下男、女性背包作业过程中的肌肉疲劳状况,设计男、女性背包徒步行走试验范式。分别测量任务前、后参与者背部肌肉肌力的最大随意收缩力f_(MVC)和f′_(MVC)、心率R_(h)、最大耐受时间T_(me),并给予博格体力消耗的主观疲劳感知评分E_(rp)。12名大学生参与者(6名男性和6名女性)被要求背着装有哑铃(重量分别为0、自身体重的12.5%和25%)的背包,以3种不同的速度(2、4、6 km/h)和两种不同的坡度(0°、10°)在跑步机上行走,直至因劳累而无法继续为止。结果表明:背包任务后,背部肌力S_(b)值下降,主观疲劳评分E_(rp)值增大;相比女性,男性肌力下降快,抗疲劳性强,但女性的疲劳感知能力较男性强。研究成果助力提升从业人员的作业设计和生活安排合理化,从而预防肌肉骨骼疾病(musculoskeletal diseases,MSDs)风险。

关键词：肌肉骨骼疾病(MSDs) 肌肉疲劳背包任务疲劳评估

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金属杂质对碱性DMH体系无氰镀银的影响

电镀与涂饰 2023年第15期42卷 1-8页

作者：王曦李乐坤刘静陈惠敏张鲜君裴玉茹成川王帅星杜楠空军装备部驻西安地区第九军事代表室陕西西安710077 中国航发西安动力控制科技有限公司陕西西安710077 南昌航空大学材料科学与工程学院江西南昌330063

通过霍尔槽试验、阴极极化曲线测试、扫描电镜(SEM)和X射线衍射(XRD)研究了不同金属杂质(包括Cu^(2+)、Ni^(2+)和Pb^(2+))对碱性5,5−二甲基乙内酰脲(DMH)体系中银电沉积行为及镀层结构的影响。结果表明,无金属杂质时,碱性DMH镀银体系的... 详细信息

通过霍尔槽试验、阴极极化曲线测试、扫描电镜(SEM)和X射线衍射(XRD)研究了不同金属杂质(包括Cu^(2+)、Ni^(2+)和Pb^(2+))对碱性5,5−二甲基乙内酰脲(DMH)体系中银电沉积行为及镀层结构的影响。结果表明,无金属杂质时,碱性DMH镀银体系的光亮电流密度区为0.5~1.0 A/dm^(2),Ag镀层结晶细致,晶粒平均尺寸为30.7 nm。3种金属杂质均会减弱碱性DMH镀银体系中银电沉积的阴极极化作用,加速银配离子的放电还原过程,导致镀层晶粒粗大,外观发灰、发黄。Cu^(2+)和Ni^(2+)会显著缩小银电沉积的工作电流密度范围,二者的质量浓度应分别控制在0.50 g/L和0.20 g/L以内。Pb^(2+)会改变银的结晶方式,使所得Ag镀层的Ag(111)晶面衍射峰减弱,Ag(200)晶面衍射峰增强,其质量浓度不宜超过0.10 g/L。

关键词：电镀银 5,5−二甲基乙内酰脲金属杂质离子阴极极化

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Measurement of the differential cross sections and angle-integrated cross sections of the ~6li(n,t)~4 He reaction from 1.0 eV to 3.0 MeV at the CSNS Back-n white neutron source

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Chinese Physics C 2020年第1期44卷 58-85页

作者： Huaiyong Bai Ruirui Fan Haoyu Jiang Zengqi Cui Yiwei Hu Guohui Zhang Zhenpeng chen Wei Jiang Han Yi Jingyu Tang liang Zhou Qi An Jie Bao Ping Cao Qiping chen Yonghao chen Pinjing cheng changqing Feng Minhao Gu Fengqin Guo changcai Han Zijie Han Guozhu He Yongcheng He Yuefeng He Hanxiong Huang Weiling Huang xiru Huang xiaolu Ji Xuyang Ji Hantao Jing ling Kang Mingtao Kang Bo li Lun li Qiang li xiao li Yang li Yang li Rong liu Shubin liu xingyan liu Guangyuan Luan Yinglin Ma changjun Ning Binbin Qi Jie Ren xichao Ruan Zhaohui Song Hong Sun xiaoyang Sun Zhijia Sun Zhixin Tan Hongqing Tang Pengcheng Wang Qi Wang Taofeng Wang Yanfeng Wang Zhaohui Wang Zheng Wang Jie Wen Zhongwei Wen Qingbiao Wu xiaoguang Wu Xuan Wu likun xie Yiwei Yang li Yu Tao Yu Yongji Yu Jing Zhang linhao Zhang liying Zhang Qingmin Zhang Qiwei Zhang xianpeng Zhang Yuliang Zhang Zhiyong Zhang Yingtan Zhao Zuying Zhou Danyang Zhu Kejun Zhu Peng Zhu State Key Laboratory of Nuclear Physics and Technology Institute of Heavy Ion PhysicsSchool of PhysicsPeking UniversityBeijing 100871China Sate Key Laboratory of Particle Detection and Electronics Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Dongguan Neutron Science Center Dongguan 523803China Physics department Tsinghua UniversityBeijing 100084China department of Modern Physics University of Science and Technology of ChinaHefei 230026China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China university of South china Hengyang 421001China Northwest Institute of Nuclear Technology Xi’an 710024China department of engineering and Applied Physics University of Science and Technology of ChinaHefei 230026China Beihang university Beijing 100083China xi’an Jiaotong university Xi’an 710049China

The^6 li(n,t)~4 He reaction was measured as the first experiment involving neutron-induced charged particle emission reactions at the CSNS(china Spallation Neutron Source)Back-n white neutron *** differential cross-sections of the^6 li(n,t)~4 He reaction at 15 detection angles ranging from 19.2°to 160.8°are obtained from 1.0 eV to 3.0 MeV at 80 neutron energy points;for 50 energy points below 0.1 MeV they are reported for the first *** results indicate that the anisotropy of the emitted tritium is noticeable above E_n=100 *** angle-integrated cross-sections are also *** present differential cross-sections agree in general with the previous evaluations,but there are some differences in the *** importantly,the present results indicate that the cross-sections of the^6 li(n,t)~4 He reaction might be overestimated by most evaluations in the 0.5-3.0 MeV region,although they are recommended as standards below 1.0 MeV.

关键词： ~6li(n,t)~4He reaction differential cross-section angle-integrated cross-section LPDA

The C_(6)D_(6)detector system on the Back-n beam line of CSNS

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Radiation Detection Technology and Methods 2019年第3期3卷 274-282页

作者： Jie Ren xichao Ruan Jie Bao Guangyuan Luan Wei Jiang Qi An Huaiyong Bai Ping Cao Qiping chen Yonghao chen Pinjing cheng Zengqi Cui Ruirui Fan changqing Feng Minhao Gu Fengqin Guo changcai Han Zijie Han Guozhu He Yongcheng He Yuefeng He Hanxiong Huang Weiling Huang xiru Huang xiaolu Ji Xuyang Ji Haoyu Jiang Hantao Jing ling Kang Mingtao Kang Bo li Lun li Qiang li xiao li Yang li Yang li Rong liu Shubin liu xingyan liu Yinglin Ma changjun Ning Binbin Qi Zhaohui Song Hong Sun xiaoyang Sun Zhijia Sun Zhixin Tan Hongqing Tang Jingyu Tang Pengcheng Wang Qi Wang Taofeng Wang Yanfeng Wang Zhaohui Wang Zheng Wang Jie Wen Zhongwei Wen Qingbiao Wu xiaoguang Wu Xuan Wu likun xie Yiwei Yang Han Yi li Yu Tao Yu Yongji Yu Guohui Zhang Jing Zhang linhao Zhang liying Zhang Qingmin Zhang Qiwei Zhang xianpeng Zhang Yuliang Zhang Zhiyong Zhang Yingtan Zhao liang Zhou Zuying Zhou Danyang Zhu Kejun Zhu Peng Zhu Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Dongguan Neutron Science Center Dongguan 523803China State Key Laboratory of Particle Detection and Electronics HefeiChina department of Modern Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China university of South china Hengyang 421001China Northwest Institute of Nuclear Technology Xi’an 710024China department of engineering and Applied Physics University of Science and Technology of ChinaHefei 230026China xi’an Jiaotong university Xi’an 710049China Beihang university Beijing 100083China

Introduction The neutron capture cross sections are very important in the field of nuclear device design and basic physics ***-free liquid scintillator such as C_(6)D_(6)detectors are widely used in the neutron capture cross-sectional measurements for the low neutron sensitivity and fast time *** Back-n white neutron source at china Spallation Neutron Source is the first spallation white neutron source in china,and it is suitable for neutron capture cross-sectional *** and methods A C_(6)D_(6)detector system was built in the Back-n experimental *** pulse height weighting technique was used to determine the system’s detection *** response to gamma rays of the C_(6)D_(6)detector was measured,and the energy resolution function was *** Carlo simulation with Geant4 code was carried out to get the weighting function of this C_(6)D_(6)detector ***,the systematic uncertainty of the weighting function was also *** According to the experimental and simulation results,this C_(6)D_(6)detector system can be used to measure neutron capture cross section.

关键词： C6D6 detector PHWT Neutron capture cross section White neutron source

Geometrical reconstruction of fluorescence events observed by the LHAASO experiment

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Chinese Physics C 2021年第4期45卷 416-425页

作者： F.Aharonian Q.An Axikegu L.X.Bai Y.X.Bai Y.W.Bao D.Bastieri X.J.Bi Y.J.Bi H.Cai J.T.Cai Z.Cao Z.Cao J.chang J.F.chang X.C.chang B.M.chen J.chen L.chen L.chen L.chen M.J.chen M.L.chen Q.H.chen S.H.chen S.Z.chen T.L.chen X.L.chen Y.chen N.cheng Y.D.cheng S.W.Cui X.H.Cui Y.D.Cui B.Z.Dai H.L.Dai Z.G.Dai Danzengluobu D.della Volpe B.DEtorre Piazzoli X.J.Dong J.H.Fan Y.Z.Fan Z.X.Fan J.Fang J.Fang C.F.Feng L.Feng S.H.Feng Y.L.Feng B.Gao C.D.Gao Q.Gao W.Gao M.M.Ge L.S.Geng G.H.Gong Q.B.Gou M.H.Gu J.G.Guo X.L.Guo Y.Q.Guo Y.Y.Guo Y.A.Han H.H.He H.N.He J.C.He S.L.He X.B.He Y.He M.Heller Y.K.Hor C.Hou X.Hou H.B.Hu S.Hu S.C.Hu X.J.Hu D.H.Huang Q.L.Huang W.H.Huang X.T.Huang Z.C.Huang F.Ji X.L.Ji H.Y.Jia K.Jiang Z.J.Jiang C.Jin D.Kuleshov K.Levochkin B.B.li C.li C.li F.li H.B.li H.C.li H.Y.li J.li K.li W.L.li X.li X.li X.R.li Y.li Y.Z.li Z.li Z.li E.W.liang Y.F.liang S.J.lin B.liu C.liu D.liu H.liu H.D.liu J.liu J.L.liu J.L.liu J.S.liu J.Y.liu M.Y.liu R.Y.liu S.M.liu W.liu Y.N.liu Z.X.liu W.J.Long R.Lu H.K.Lv B.Q.Ma L.L.Ma X.H.Ma J.R.Mao A.Masood W.Mitthumsiri T.Montaruli Y.C.Nan B.Y..Pang P.Pattarakijwanich Z.Y.Pei M.Y.Qi D.Ruffolo V.Rulev A.Saiz L.Shao O.Shchegolev X.D.Sheng J.R.Shi H.C.Song Yu.V.Stenkin V.Stepanov Q.N.Sun X.N.Sun Z.B.Sun P.H.T.Tam Z.B.Tang W.W.Tian B.D.Wang C.Wang H.Wang H.G.Wang J.C.Wang J.S.Wang L.P.Wang L.Y.Wang R.N.Wang W.Wang W.Wang X.G.Wang X.J.Wang X.Y.Wang Y.D.Wang Y.J.Wang Y.P.Wang Z.Wang Z.Wang Z.H.Wang Z.X.Wang D.M.Wei J.J.Wei Y.J.Wei T.Wen C.Y.Wu H.R.Wu S.Wu W.X.Wu X.F.Wu S.Q.xi J.xia J.J.xia G.M.xiang G.xiao H.B.xiao G.G.xin Y.L.xin Y.xing D.L.Xu R.X.Xu L.Xue D.H.Yan C.W.Yang F.F.Yang J.Y.Yang L.L.Yang M.J.Yang R.Z.Yang S.B.Yang Y.H.Yao Z.G.Yao Y.M.Ye L.Q.Yin N.Yin X.H.You Z.Y.You Y.H.Yu Q.Yuan H.D.Zeng T.X.Zeng W.Zeng Z.K.Zeng M.Zha X.X.Zhai B.B.Zhang H.M.Zhang H.Y.Zhang J.L.Zhang J.W.Zhang L.Zhang L.Zhang L.X.Zhang P.F.Zhang P.F.Zhang R.Zhang S.R.Zhang S.S.Zhang X.Zhang X.P.Zhang Y.Zhang Y.Zhang Y.F.Zhang Y.L.Zhang B.Zhao J.Zhao L.Zhao L.Z.Zhao S.P.Zhao F.Zheng Y.Zheng B.Zhou H.Zhou J.N.Zhou P Key Laboratory of Particle Astrophyics&Experimental Physics Division&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China university of Chinese Academy of Sciences Beijing 100049China TIANFU Cosmic Ray Research Center ChengduSichuanChina State Key Laboratory of Paricle Detection and Electronics China university of Science and Technology of china HefeiAnhui 230026China department of engineering Physics Tsinghua UniversityBeijing 100084China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China National Space Science Center Chinese Academy of SciencesBeijing 100190China School of Physics Peking UniversityBeijing 100871China Center for Astrophysics Guangzhou UniversityGuangzhouGuangdong 510006China School of Physics and Astronomy&School of Physics(Guangzhou) Sun Yat-sen UniversityZhuhaiGuangdong 519000China School of Physical Science and Technology Guangxi UniversityNanningGuangxi 530004China Hebei Normal university ShijiazhuangHebei 050024China School of Physics and Microelectronics Zhengzhou UniversityZhengzhouHenan 450001China School of Astronomy and Space Science Nanjing UniversityNanjingJiangsu 210023China Key Laboratory of Dark Matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjingJiangsu 210023China Institute of Frontier and Interdisciplinary Science Shandong UniversityQingdaoShandong 266237China Key Laboratory for Research in Galaxies and Cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China Tsung-Dao Lee Institute&School of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China School of Physical Science and Technology Southwest Jiaotong UniversityChengduSichuan 610031China College of Physics Sichuan UniversityChengduSichuan 610065China Key Laboratory of Cosmic Rays(Tibet university) Ministry of EducationLhasaTibet 850000China School of physics and technology Wuhan UniversityWuhanHubei 430072Ch

The LHAASO-WFCTA experiment,which aims to observe cosmic rays in the sub-EeV range using the fluorescence technique,uses a new generation of high-performance *** ensure that the experiment has ex-cellent detection capability associated with the measurement of the energy spectrum,the primary composition of cosmic rays,and so on,an accurate geometrical reconstruction of air-shower events is *** paper de-scribes the development and testing of geometrical reconstruction for stereo viewed events using the WFCTA(Wide Field of view Cherenkov/Fluorescence Telescope Array)*** approaches,which take full advantage ofthe WFCTA *** *** is the stereo-angular method,which uses the pointing of triggered SiPMs in the shower trajectory,and the other is the stereo-timing method,which uses the triggering time of the fired *** results show that both methods have good geometrical resolution:the resolution of the stereo-timing method is slightly better than the stereo-angular method because the resolution of the latter is slightly limited by the shower track length.

关键词： cosmic ray fluorescence telescope stereo observation geometrical reconstruction

Mapping essential urban land use categories in china(EULUC-china):preliminary results for 2018

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Science Bulletin 2020年第3期65卷 182-187页

作者： Peng Gong Bin chen Xuecao li Han liu Jie Wang Yuqi Bai Jingming chen xi chen Lei Fang Shuailong Feng Yongjiu Feng Yali Gong Hao Gu Huabing Huang xiaochun Huang Hongzan Jiao Yingdong Kang Guangbin Lei Ainong li xiaoting li Xun li Yuechen li Zhilin li Zhongde li Chong liu Chunxia liu Maochou liu Shuguang liu Wanliu Mao changhong Miao Hao Ni Qisheng Pan Shuhua Qi Zhehao Ren Zhuoran Shan Shaoqing Shen Minjun Shi Yimeng Song Mo Su Hoi Ping Suen Bo Sun Fangdi Sun Jian Sun lin Sun Wenyao Sun Tian Tian xiaohua Tong Yihsing Tseng Ying Tu Hong Wang Lan Wang xi Wan Zongming Wang Tinghai Wu Yaowen xie Jian Yang Jun Yang Man Yuan Wenze Yue Hongda Zeng Kuo Zhang Neng Zhang Tao Zhang Yu Zhang Feng Zhao Yichen Zheng Qiming Zhou Nicholas Clinton Zhiliang Zhu Bing Xu Ministry of Education Key Laboratory for Earth System Modeling Department of Earth System ScienceTsinghua UniversityBeijing 100084China Tsinghua Urban Institute Tsinghua UniversityBeijing 100084China Center for Healthy Cities Institute for China Sustainable UrbanizationTsinghua UniversityBeijing 100084China department of Land Air and Water ResourcesUniversity of CaliforniaDavisCA 95616-8627USA department of Geological and Atmospheric Sciences Iowa State UniversityAmesIA 50011USA State Key Laboratory of Remote Sensing Science Institute of Remote Sensing and Digital EarthChinese Academy of SciencesBeijing 100101China AI for Earth Laboratory Cross-Strait InstituteTsinghua UniversityBeijing 100084China International Institute for Earth System Sciences Nanjing UniversityNanjing 210093China Research Center for Ecology and Environment of Central Asia Chinese Academy of SciencesUrumchi 830011China Key Laboratory of Forest Ecology and Management Institute of Applied EcologyChinese Academy of SciencesShenyang 110016China National engineering Laboratory for Applied Technology in Forestry&Ecology in South china College of Life Science and TechnologyCentral South University of Forestry and TechnologyChangsha 410004China College of Surveying&Geo-Informatics Tongji UniversityShanghai 200092China department of Urban Planning College of Architecture and Urban PlanningTongji UniversityShanghai 200092China Beijing Institute of Urban Planning Beijing 100045China department of Urban Planning School of Urban DesignWuhan UniversityWuhan 430072China College of Earth Sciences Jilin UniversityChangchun 130061China Research Center for Digital Mountain and Remote Sensing Application Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu 610041China Institute of Remote Sensing and Geographic Information System School of Earth and Space SciencesPeking UniversityBeijing 100871China department of Urban and Regional Planning School of Geography and PlanningSun Yat-sen Univ

Land use reflects human activities on *** land use is the highest level human alteration on Earth,and it is rapidly changing due to population increase and *** areas have widespread effects on local hydrology,climate,biodiversity,and food production[1,2].However,maps,that contain knowledge on the distribution,pattern and composition of various land use types in urban areas,are limited to city *** mapping standard on data sources,methods,land use classification schemes varies from city to city,due to differences in financial input and skills of mapping *** address various national and global environmental challenges caused by urbanization,it is important to have urban land uses at the national and global scales that are derived from the same or consistent data sources with the same or compatible classification systems and mapping *** is because,only with urban land use maps produced with similar criteria,consistent environmental policies can be made,and action efforts can be compared and assessed for large scale environmental ***,despite of the fact that a number of urban-extent maps exist at global scales[3,4],more detailed urban land use maps do not exist at the same *** at big country or regional levels such as for the United States,china and European Union,consistent land use mapping efforts are rare[5,6](e.g.,https://***/open_land_use/).

关键词： EULUC-china 土地利用类型