检索结果-南通市图书馆

Classification of ice and water in the Arctic using radar altimeter and microwave radiometer data from HY-2B satellite

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Oceanologica Sinica 2023年第5期42卷 179-191页

作者： Chengfei Jiang Mingsen Lin Ruixue Cao Hao Wei Lijian Shi Bin Cheng Yongjun Jia Qimao Wang School of Marine Science and Technology Tianjin UniversityTianjin 300072China National Satellite Ocean Application Service Ministry of Natural ResourcesBeijing 100081China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China Key Laboratory of Space Ocean Remote Sensing and Application State Oceanic AdministrationBeijing 100081China College of Ocean and Meteorology Guangdong Ocean UniversityZhanjiang 524088China Finnish Meteorological Institute Helsinki FI-00560Finland

Several Chinese marine satellites have been launched in recent years.Monitoring sea ice and the ocean in the Arctic is of great importance for climate research.Sea ice in the Arctic has changed rapidly during the past few decades with respect to the extent and thickness.In this study,we applied combined passive and active microwave data from the Chinese HaiYang-2B(HY-2B)satellite to classify ice and sea water in the Arctic.We use data from a radar altimeter(RA)and a calibration microwave radiometer(CMR)to discriminate between ice and water by applying several approaches(1)the single parameter threshold criteria,(2)the multi-parameters linear segmentations and(3)the K-means clustering.The results yielded by these methods were in good agreement(classification accuracy>95%)with the Satellite Application Facility on Ocean and Sea Ice products between November and April.For other months(May–October),however,the agreement was less good(lowest classification accuracy approximate 85%in summer).A hybrid approach combined with graphical ice edges detection and microwave radar waveform analysis is therefore developed.A visual comparison with SAR images suggested the hybrid approach results greatly improved the ice and water discrimination in summer.This study demonstrated that multi-sensors(RA and CMR)configurations from HY satellites can offer comparable polar earth observation to the European Space Agency and NOAA satellite products.

关键词： Arctic active microwave data passive microwave data sea ice seawater

悖论式领导对员工创意领地行为的影响:一个有调节的中介模型

在线全文

学校读者我要写书评

暂无评论

科技管理研究 2022年第2期42卷 137-145页

作者：曹萍赵瑞雪上海应用技术大学经济与管理学院上海201418

针对员工创意领地行为对企业创新发展存在着一定不利影响的问题,基于社会交换理论和社会认同理论,通过352份来自高科技企业员工的研究样本,分析悖论式领导对员工创意领地行为的影响。研究结果表明:悖论式领导对员工创意领地行为有负向... 详细信息

针对员工创意领地行为对企业创新发展存在着一定不利影响的问题,基于社会交换理论和社会认同理论,通过352份来自高科技企业员工的研究样本,分析悖论式领导对员工创意领地行为的影响。研究结果表明:悖论式领导对员工创意领地行为有负向影响作用,该过程是通过以情感导向的团队互动的中介作用实现的,而以事实为导向的团队互动中介效应不显著;个体主义不仅能够增强情感导向的团队互动对创意领地行为的负向影响,还对情感导向的团队互动在悖论式领导与员工创意领地行为关系间的中介效应具有强化作用。为促进组织降低员工创意领地行为,提出领导者培养自身接受并协调矛盾的能力、注重员工个性化发展、重视营造良好的团队氛围和促进团队互动、注重明确员工个人创意在团队中的归属问题等措施和建议。

关键词：悖论式领导团队互动个体主义员工创意领地行为

Distribution and Oceanic Dynamic Mechism of Precipitation Induced by Typhoon Lekima

在线全文

学校读者我要写书评

暂无评论

American Journal of Climate Change 2022年第2期11卷 133-154页

作者： Linxu Huang Ruixue Cao Shuwen Zhang College of Ocean and Meteorology Guangdong Ocean University Zhanjiang China Institute of Marine Science Shantou University Shantou China

Air-sea interaction usually affects the distribution of precipitation during typhoon period, but whether typhoon precipitation distribution is affected by ocean eddies is still unclear. In this study, based on a multi-source satellite database, reanalysis data and in-situ data were used to study the precipitation characteristics of Typhoon Lekima (2019) as well as its physical causes. The results showed that the precipitation of Lekima presents an asymmetric structure, exhibiting heavier precipitation on the left side of the typhoon path before 7 August, and with the typhoon strengthened, precipitation was evenly distributed around the typhoon center. The typhoon cloud system, characteristics of the typhoon, and ocean factors could be responsible for the asymmetric structure of precipitation during the typhoon period. The change in the typhoon cloud system during the typhoon influenced the distribution of precipitation. And there have been some oceanic processes that influenced the distribution of precipitation. Anticyclonic eddies and thick mixing level depths (MLDs) play important roles in typhoon precipitation. The anticyclonic eddies with thick MLD exist to reduce the mixing of the upper ocean to maintain the SST. Therefore, the SST and air-sea exchange can be sustained to influence typhoon precipitation. This study provides a new understanding of the impact of ocean processes on typhoon precipitation distribution.

关键词： Typhoon Lekima Ekman Pumping Ocean Mixing Mesoscale Eddies Precipitation

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

胃底腺来源肿瘤10例临床病理学分析

中华病理学杂志 2023年第1期52卷 55-57页

作者：王翠翠刘稳曹瑞雪曹永成解放军联勤保障部队第九六〇医院病理科济南250031

目的探讨胃底腺来源肿瘤包括胃泌酸腺腺瘤(OGA)和胃底腺型腺癌(GA-FG)的临床病理特征。方法收集2019年2月至2022年4月解放军联勤保障部队第九六〇医院诊断的10例胃底腺来源肿瘤患者资料, 分析其临床资料、内镜特征、病理形态特征、免疫... 详细信息

目的探讨胃底腺来源肿瘤包括胃泌酸腺腺瘤(OGA)和胃底腺型腺癌(GA-FG)的临床病理特征。方法收集2019年2月至2022年4月解放军联勤保障部队第九六〇医院诊断的10例胃底腺来源肿瘤患者资料, 分析其临床资料、内镜特征、病理形态特征、免疫组织化学结果、治疗及预后情况。结果全组男性4例, 女性6例, 年龄43~70岁。肿瘤主要位于胃底、胃体, 病变以浅表隆起型(Ⅱa型)多见, 累及黏膜层4例, 浸润黏膜下层6例。突触素弥漫中~强阳性表达, cyclin D1蛋白表达明显增加, 为20%~60%。结论 OGA和GA-FG可能是同一谱系的独特胃肿瘤, 具有相似的组织学结构特征、免疫组织化学染色特点及分子生物学表现, OGA可视为GA-FG的黏膜内阶段。cyclin D1、突触素蛋白检测能辅助胃底腺来源肿瘤诊断。

关键词：隆起型胃底腺治疗及预后免疫组织化学胃肿瘤肿瘤诊断组织学结构黏膜下层

Prognostic value of the long noncoding RNA AFAP1-AS1 in cancers

在线全文

学校读者我要写书评

暂无评论

Oncology and Translational Medicine 2023年第3期9卷 133-146页

作者： Lixiu Zhu Jiawen Yan Guoqiang Xu Qiaoli Wang Tianrui Xu Ruixue Cao Chuanzheng Sun Yan Xi Wei Xiong Department of Radiotherapy Yunnan Cancer HospitalThe Third Affiliated Hospital of Kunming Medical UniversityKunming 650000China Department of Radiotherapy People's Hospital of Yuxi CityThe Sixth Affiliated Hospital of Kunming Medical UniversityYuxi 653100China Department of Head and Neck Surgery Yunnan Cancer HospitalThe Third Affiliated Hospital of Kunming Medical UniversityKunming 650000China

Objective This meta-analysis explored whether the expression of actin filament-associated protein 1 antisense RNA 1(AFAP1-AS1)is related to the prognosis and clinicopathological features of patients with cancer.Methods PubMed,EMBASE,and Cochrane Library were systematically searched.Hazard ratios(HRs)with 95%confidence intervals(CIs)were used to assess the prognostic value based on overall survival(OS),disease-free survival(DFS),and progression-free survival(PFS).Odds ratios(ORs)with 95%CIs were used to determine the relationships between AFAP1-AS1 and clinicopathological features,such as large tumor size(LTS),high tumor stage(HTS),poor histological grade(PHG),lymph node metastasis(LNM),and distant metastasis(DM).Results Thirty-five eligible articles and 3433 cases were analyzed.High AFAP1-AS1 expression,compared to low AFAP1-AS1 expression,correlated with significantly shorter OS(HR=2.15,95%CI=1.97-2.34,P<0.001),DFS(HR=1.37,95%CI=1.19-1.57,P<0.001),and PFS(HR=1.97,95%CI=1.56-2.50,P<0.001)in patients with cancer.In various cancers,elevated AFAP1-AS1 expression was significantly associated with LTS(OR=2.76,95%CI=2.16-3.53,P<0.001),HTS(OR=2.23,95%CI=1.83-2.71,P<0.001),and PHG(OR=1.39,95%CI=1.08-1.79,P=0.01)but not LNM(OR=1.59,95%CI=0.88-2.85,P=0.12)or DM(OR=1.81,95%CI=0.90-3.66,P=0.10).Conclusion High AFAP1-AS1 expression was associated with prognostic and clinicopathological features,suggesting that AFAP1-AS1 is a prognostic biomarker for human cancers.

关键词： long noncoding RNA(lncRNA) actin filament-associated protein 1 antisense RNA 1(AFAP1-AS1) prognostic meta-analysis

工作资源对新生代知识型员工创意领地行为的影响--基于SEM与fsQCA的研究

在线全文

学校读者我要写书评

暂无评论

科学学与科学技术管理 2023年第5期44卷 161-180页

作者：曹萍赵瑞雪尤宇上海应用技术大学经济与管理学院上海手201418

基于资源保存理论和社会交换理论,探讨工作资源对新生代知识员工创意领地行为的影响机制。以317份“90后”新生代知识员工为样本,应用结构方程模型和模糊集定性比较分析法进行分析,结果表明:工作资源负向影响新生代知识员工的创意领地行... 详细信息

基于资源保存理论和社会交换理论,探讨工作资源对新生代知识员工创意领地行为的影响机制。以317份“90后”新生代知识员工为样本,应用结构方程模型和模糊集定性比较分析法进行分析,结果表明:工作资源负向影响新生代知识员工的创意领地行为;组织支持感与预期互惠关系在工作资源对创意领地行为的负向影响中发挥部分中介作用及链式中介作用;根据模糊集定性比较分析结果,得出两类激发员工创意共享的前因构型,包括以高工作资源为核心的资源主导型和以高职位为核心的责任主导型。

关键词：工作资源组织支持感预期互惠关系创意领地行为模糊集定性比较分析

Metal organic frameworks-based cathode materials for advanced Li-S batteries: A comprehensive review

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第4期17卷 2592-2618页

作者： Zhengkun Xie Boyong cao Xiyan Yue ruixue Wang Ziqian Xue Jiajia Wang Guoqing Guan Weihua Chen College of Chemistry Zhengzhou UniversityZhengzhou 450001China School of Ecology and Environment Zhengzhou UniversityZhengzhou 450001China School of Materials Science and Engineering Henan Polytechnic UniversityJiaozuo 454003China Laboratory of Energy Conversion Engineering Institute of Regional InnovationHirosaki University3 Bunkyo-choHirosakiAomori 036-8561Japan Institute for Integrated Cell-Material Sciences(iCeMS) Kyoto UniversitySakyo-kuKyoto 606-8501Japan Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Nankai UniversityTianjin 300071China

Li-S batteries(LSBs)have been considering as new and promising energy storage systems because of the high theoretical energy density and low price.Nevertheless,their practical application is inhibited by several factors,including poor electrical conductivity of electrode materials,greatly volumetric variation,as well as the polysulfide formation upon the cycling.To address these problems,it is imperative to develop and design effective and suitable sulfur host anode materials.Metal organic frameworks(MOFs)-based cathode materials,possessing their good conductivity and easy morphology design,have been extensively studied and exhibited enormously potential in LSBs.In this review,a comprehensive overview of MOFs-based sulfur host materials is provided,including their electrochemical reaction mechanisms,related evaluation parameters,and their performances used in LSBs in the past few years.In particular,the recent advances using in-situ characterization technologies for investigating the electrochemical reaction mechanism in LSBs are presented and highlighted.Additionally,the challenges and prospects associated with future research on MOF-related sulfur host materials are discussed.It is anticipated to offer the guidance for the identification of suitable MOFs-based sulfur cathode materials for high-performance LSBs,thereby contributing for the achievement of a sustainable and renewable society.

关键词： lithium metal anode sulfur cathode metal organic frameworks host energy density in-situ characterization

ISDS仲裁员多样性问题研究--以BLP国际仲裁小组对仲裁多样性调查为基础

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

海外投资与出口信贷 2020年第3期 38-42页

作者：曹瑞雪华侨大学法学院

国际投资仲裁裁决中,仲裁员的职业道德、责任心以及专业水平等直接决定着仲裁的公正性和快捷性。仲裁员的性别、地区以及专业知识和文化背景等是仲裁员作出裁决的影响因素。研究仲裁员多样性问题,推进仲裁员制度改革,对ISDS改革具有重... 详细信息

国际投资仲裁裁决中,仲裁员的职业道德、责任心以及专业水平等直接决定着仲裁的公正性和快捷性。仲裁员的性别、地区以及专业知识和文化背景等是仲裁员作出裁决的影响因素。研究仲裁员多样性问题,推进仲裁员制度改革,对ISDS改革具有重要影响。

关键词： ISDS改革仲裁员改革仲裁员多样性

在线全文

学校读者我要写书评

暂无评论

地方政府债务风险的传导机制及化解路径

金融市场研究 2023年第12期 113-123页

作者：曹婧韩瑞雪中国社会科学院金融研究所首都经济贸易大学财政税务学院

厘清地方政府债务风险向财政、金融领域的传导路径,是建立防范化解地方债务风险长效机制的前提。研究发现,土地财政遇冷叠加项目收益不及预期,导致专项债偿付压力明显上升,定价机制和信用评级不健全难以引导投资者对专项债风险形成合理... 详细信息

厘清地方政府债务风险向财政、金融领域的传导路径,是建立防范化解地方债务风险长效机制的前提。研究发现,土地财政遇冷叠加项目收益不及预期,导致专项债偿付压力明显上升,定价机制和信用评级不健全难以引导投资者对专项债风险形成合理预期。隐性债务积累引发财政金融风险交织共振:一方面,政府隐性担保导致融资平台债务风险向财政集中;另一方面,融资平台债务风险通过金融机构资产负债表和风险溢价渠道与金融风险相互传导,并借助银行间资金拆借和融资平台担保网络形成风险跨区域传染。防范化解地方政府债务风险应兼顾短期政策应对和中长期改革治理,建立同高质量发展相适应的全流程债务监管机制。

关键词：专项债融资平台债务风险传导风险化解