检索结果-南通市图书馆

Testing Linearity in Functional Partially Linear Models

在线全文

学校读者我要写书评

暂无评论

Acta Mathematicae Applicatae Sinica 2024年第3期40卷 875-886页

作者： Fan-rong zhao Bao-xue ZHANG School of Mathematical Sciences Shanxi UniversityTaiyuan 030006China School of Statistics Capital University of Economics and BusinessBeijing 100070China

For the functional partially linear models including flexible nonparametric part and functional linear part,the estimators of the nonlinear function and the slope function have been studied in existing *** to test the correlation between response and explanatory variables,however,still seems to be ***,a test procedure for testing the linearity in the functional partially linear models will be proposed in this paper.A test statistic is constructed based on the existing estimators of the nonlinear and the slope ***,we prove that the approximately asymptotic distribution of the proposed statistic is a chi-squared distribution under some regularity ***,some simulation studies and a real data application are presented to demonstrate the performance of the proposed test statistic.

关键词： asymptotic theory functional partially linear model Nadaraya-Watson estimate test statistic

A high-performance lithium anode based on N-doped composite graphene

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第3期43卷 1030-1036页

作者： Can Jiao Hao-Bo Sun Li Zhang Shang-Qian zhao Guo-Yao Pang Chun-rong zhao Shi-Gang Lu General Research Institute for Nonferrous Metals Beijing100088China China Automotive Battery Research Institute Co.Ltd Beijing101407China

Lithium(Li)metal is the most promising electrode for next-gene ration rechargeable *** order to push the commercialization of the lithium metal batteries,a kind of nitrogen(N)-doped composite graphene(NCG)adopted as the Li plating host was prepared to regulate Li metal nucleation and suppress dendrite ***,a new kind of sandwich-type composite lithium metal(STCL)electrode was developed to improve its *** STCL electrode can be used as convenient as a piece of Li foil but no dendrite *** a symmetric battery,the STCL electrode cycled for more than 4500 h with the overpotential of less than 40 *** due to the creative design,the STCL promises the Li-S battery with a prolonged cycling lifespan.

关键词： Lithium metal anode Lithiophilic N-doped composite graphene Sandwich-type composite lithium metal electrode

Measurement of the neutron-induced total cross sections of ^(nat)Pb from 0.3 eV to 20 MeV on the Back-n at CSNS

在线全文

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2024年第2期35卷 85-93页

作者： Jie-Ming Xue Song Feng Yong-Hao Chen Han Yi Min Xiao Pin-Jing Cheng Xin-Xiang Li rong Liu Yi-Wei Yang Zi-Jie Han Da-Jun zhao Hao-Qiang Wang Bao-Qian Li Ji-rong zhao Lei-Xun Tang Wen Luo Bo Zheng School of Nuclear Science and Technology University of South ChinaHengyang 421001China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China

The neutron-induced total cross sections of natural lead have been measured in a wide energy range(0.3 eV-20 MeV)on the back-streaming white neutron beamline(Back-n)at the China Spallation Neutron *** energy was determined by the neutron total cross-section spectrometer using the time-of-flight technique.A fast multi-cell fission chamber was used as the neutron detector,and a 10-mm-thick high-purity natural lead sample was employed for the neutron transmission *** on-beam background was determined using Co,In,Ag,and Cd *** excitation function of ^(nat)Pb(n,tot)reaction below 20 MeV was calculated using the TALYS-1.96 nuclear-reaction modeling *** present results were compared with previous results,the evaluated data available in the five major evaluated nuclear data libraries(i.e.,ENDF/B-VIII.0,JEFF-3.3,JENDL-5,CENDL-3.2,and BROND-3.1),and the theoretical calculation *** agreement was found between the new results and those of previous experiments and with the theoretical curves in the corresponding *** measurement obtained the neutron total cross section of natural lead with good accuracy over a wide energy range and added experimental data in the resonance energy *** provides more reliable experimental data for nuclear engineering design and nuclear data evaluation of lead.

关键词： Neutron-induced total cross section Natural lead Time-of-flight TALYS-1.96 CSNS Back-n white neutron beamline

基于Landsat 8影像提取豫中地区冬小麦和夏玉米分布信息的最佳时相选择

在线全文

学校读者我要写书评

暂无评论

作物学报 2024年第3期50卷 721-733页

作者：赵荣荣丛楠赵闯中国科学院地理科学与资源研究所拉萨高原生态试验站北京100101 中国农业大学资源与环境学院北京100193

遥感技术对大尺度农业实时监测提供了一个理想的手段,遥感影像植被分类的最佳时相对作物种植面积遥感监测非常重要。本文选取2020年至2021年的6景Landsat 8影像,覆盖了夏玉米从乳熟到收获、冬小麦从越冬到成熟的生育期,以此分析不同时... 详细信息

遥感技术对大尺度农业实时监测提供了一个理想的手段,遥感影像植被分类的最佳时相对作物种植面积遥感监测非常重要。本文选取2020年至2021年的6景Landsat 8影像,覆盖了夏玉米从乳熟到收获、冬小麦从越冬到成熟的生育期,以此分析不同时相的冬小麦-夏玉米与其他地类在光谱特征和NDVI上的差异,通过决策树的方法提取豫中地区冬小麦-夏玉米的空间分布情况。结果表明,冬小麦-夏玉米在不同生长发育时期,提取到的面积比有所不同,对于夏玉米而言,乳熟时期的提取效果要优于之后的时期,其在2020年8月26日的总体精度最高,为83.60%,Kappa系数为0.72,分类质量很好;对于冬小麦而言,最佳识别时期则处于冬小麦的越冬期,其在2021年1月1日的总体精度最高,为92.36%,Kappa系数为0.81,信息提取效果很好。除了作物自身生长过程的覆盖度变化,分类精度随成像时间而改变。多时相信息提取也发现,受到天气等环境条件限制,夏玉米和冬小麦的种植区域不完全重叠,山区冬季不适合冬小麦种植从而没有与夏玉米出现重叠分布。本研究有助于我们从宏观上对作物分布及生长状况作出及时有效的判断,对农业监测,特别是对轮作农田的信息管理和作物物候、种植面积等研究具有广阔的应用前景。

关键词：冬小麦-夏玉米光谱特征决策树分类分类精度 Landsat 8-OLI遥感影像

维普期刊数据库博看期刊

PRaG 3.0 therapy for human epidermal growth factor receptor 2-positive metastatic pancreatic ductal adenocarcinoma:A case report

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2024年第9期30卷 1237-1249页

作者： Yue-Hong Kong Mei-Ling Xu Jun-Jun Zhang Guang-Qiang Chen Zhi-Hui Hong Hong Zhang Xiao-Xiao Dai Yi-Fu Ma Xiang-rong zhao Chen-Yang Zhang rong-Zheng Chen Peng-Fei Xing Li-Yuan Zhang Center for Cancer Diagnosis and Treatment The Second Affiliated Hospital of Soochow UniversitySuzhou 215000Jiangsu ProvinceChina Department of Radiotherapy&Oncology The Second Affiliated Hospital of Soochow UniversitySuzhou 215000Jiangsu ProvinceChina Institution of Radiotherapy&Oncology Soochow UniversitySuzhou 215000Jiangsu ProvinceChina Department of Radiology The Second Affiliated Hospital of Soochow UniversitySuzhou 215000Jiangsu ProvinceChina Department of Nuclear Medicine The Second Affiliated Hospital of Soochow UniversitySuzhou 215000Jiangsu ProvinceChina Department of Clinical Laboratory The Second Affiliated Hospital of Soochow UniversitySuzhou 215000Jiangsu ProvinceChina Department of Pathology The Second Affiliated Hospital of Soochow UniversitySuzhou 215000Jiangsu ProvinceChina

BACKGROUND Pancreatic ductal adenocarcinoma(PDAC)is a highly fatal disease with limited effective treatment especially after first-line *** human epidermal growth factor receptor 2(HER-2)immunohistochemistry(IHC)positive is associated with more aggressive clinical behavior and shorter overall survival in *** SUMMARY We present a case of multiple metastatic PDAC with IHC mismatch repair proficient but HER-2 IHC weakly positive at diagnosis that didn’t have tumor regression after first-line nab-paclitaxel plus gemcitabine and PD-1 inhibitor treatment.A novel combination therapy PRaG 3.0 of RC48(HER2-antibody-drug conjugate),radio-therapy,PD-1 inhibitor,granulocyte-macrophage colony-stimulating factor and interleukin-2 was then applied as second-line therapy and the patient had confirmed good partial response with progress-free-survival of 6.5 months and overall survival of 14.2 *** had not developed any grade 2 or above treatment-related adverse events at any *** of peripheral CD8^(+) Temra and CD4^(+) Temra were increased during first two activation cycles of PRaG 3.0 treatment containing radiotherapy but deceased to the baseline during the maintenance cycles containing no *** PRaG 3.0 might be a novel strategy for HER2-positive metastatic PDAC patients who failed from previous first-line approach and even PD-1 immunotherapy but needs more data in prospective trials.

关键词： Pancreatic ductal adenocarcinoma PRaG 3.0 therapy Human epidermal growth factor receptor 2 Novel combination therapy Case report

Diagnostic Value of GDF10 for the Tumorigenesis and Immune Infiltration in Lung Squamous Cell Carcinoma

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

Current Medical Science 2024年第2期44卷 309-327页

作者： Xiao-jun WANG Jia-ping CHEN Xin-wei QIAO Wang-yang MENG Yang-wei WANG Yun-chong MENG rong zhao Wei LIN Yong-de LIAO Han XIAO Pei-yuan MEI Department of Thoracic Surgery Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Department of Thoracic Surgery Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinan 250021China

Objective:Lung squamous cell carcinoma(LUSC)is associated with a low survival *** suggests that bone morphogenetic proteins(BMPs)and their receptors(BMPRs)play crucial roles in tumorigenesis and ***,a comprehensive analysis of their role in LUSC is *** study aimed to explore the relationship between BMPs/BMPRs expression levels and the tumorigenesis and prognosis of ***:The“R/Limma”package was utilized to analyze the differential expression characteristics of BMPs/BMPRs in LUSC,using data from TCGA,GTEx,and GEO ***,the“survminer”packages were employed to investigate their prognostic value and correlation with clinical features in *** core gene associated with LUSC progression was further explored through weighted gene correlation network analysis(WGCNA).LASSO analysis was conducted to construct a prognostic risk model for *** specimens were examined by immunohistochemical analysis to confirm the diagnostic value in ***,based on the tumor immune estimation resource database and tumor-immune system interaction database,the role of the core gene in the tumor microenvironment of LUSC was ***:GDF10 had a significant correlation only with the pathological T stage of LUSC,and the protein expression level of GDF10 decreased with the tumorigenesis of LUSC.A prognostic risk model was constructed with GDF10 as the core gene and 5 hub genes(HRASLS,HIST1H2BH,FLRT3,CHEK2,and ALPL)for ***10 showed a significant positive correlation with immune cell infiltration and immune checkpoint ***:GDF10 might serve as a diagnostic biomarker reflecting the tumorigenesis of LUSC and regulating the tumor immune microenvironment to guide more effective treatment for LUSC.

关键词： lung squamous cell carcinoma tumorigenesis bone morphogenetic protein GDF10 tumor immune microenvironment

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

乡村振兴“家”之四重奏

河北学刊 2024年第4期44卷 168-174页

作者：彭兆荣四川美术学院中国艺术遗产研究中心厦门大学人类学系

中华文明总体上属于农耕文明,农耕文明造就了乡土社会,乡土社会建构了社稷国家,这也成为中华民族传统的家园遗产。家园遗产包含着四种“家”的层次结构,即以小农经济为主导的家庭,以宗族为纽带的扩大家族,以自然生态为背景的村落家园,... 详细信息

中华文明总体上属于农耕文明,农耕文明造就了乡土社会,乡土社会建构了社稷国家,这也成为中华民族传统的家园遗产。家园遗产包含着四种“家”的层次结构,即以小农经济为主导的家庭,以宗族为纽带的扩大家族,以自然生态为背景的村落家园,以及以民族为主导性认同的国家,形成了一种特殊的复合性“家”的共同体。中国当下正在实施乡村振兴战略,如何在保护、继承的基础上,演奏好“家”的四部和声,是关乎到乡村振兴能否取得成功的重要因素。

关键词：家庭—家族—家园—国家四重奏中华民族共同体乡村振兴

同方期刊数据库

在线全文

学校读者我要写书评

暂无评论

气候智慧型林业发展现状及启示

世界林业研究 2024年第3期37卷 10-15页

作者：石浩男赵荣中国林业科学研究院林业科技信息研究所北京100091

为发挥森林在应对气候变化方面的重要作用,欧美学者提出了气候智慧型林业(climate-smart forestry)的概念和理论,得到欧美社会各界广泛关注。文中从核心概念、主要目标、与其他森林经营模式的关系、应用范畴、发展重点5个方面解释气候... 详细信息

为发挥森林在应对气候变化方面的重要作用,欧美学者提出了气候智慧型林业(climate-smart forestry)的概念和理论,得到欧美社会各界广泛关注。文中从核心概念、主要目标、与其他森林经营模式的关系、应用范畴、发展重点5个方面解释气候智慧型林业的概念,梳理气候智慧型林业的发展脉络和研究现状,讨论气候智慧型林业理念存在的问题,针对问题提出潜在的研究方向。我国重视林业在实现碳中和碳达峰、促进乡村振兴等多方面的作用。气候智慧型林业与我国林业政策方向相符,对加强森林经营、支持产业发展、发展林业金融、促进国家合作等具有启示意义。

关键词：气候智慧型林业森林经营森林碳汇林业经济林业政策

同方期刊数据库

在线全文

学校读者我要写书评

暂无评论

耕地多功能对粮食生产能力变化的敏感度研究

自然资源学报 2024年第6期39卷 1434-1449页

作者：高佳赵荣荣王盼盼东北大学文法学院沈阳110169 辽宁省土地利用与保护研究基地沈阳110169 辽宁省自然资源厅土地保护与利用重点实验室沈阳110169 沈阳建筑大学管理学院沈阳110168

基于敏感度模型和GIS可视化方法,使用2005—2020年辽宁省各地级市统计数据,分析辽宁省耕地多功能对粮食生产能力变化的敏感度。研究发现:(1)2005—2020年,辽宁省耕地多功能指数平均值上升,生产功能和社会功能指数平均值上升,生态功能指... 详细信息

基于敏感度模型和GIS可视化方法,使用2005—2020年辽宁省各地级市统计数据,分析辽宁省耕地多功能对粮食生产能力变化的敏感度。研究发现:(1)2005—2020年,辽宁省耕地多功能指数平均值上升,生产功能和社会功能指数平均值上升,生态功能指数平均值下降。(2)2020年,辽宁省各耕地多功能分区的粮食生产能力呈现显著差异,粮食生产能力与耕地各功能存在不同响应关系。(3)2005—2020年,耕地多功能对粮食生产能力变化的敏感度降低,耕地生产功能对粮食生产能力变化的敏感度升高,耕地社会功能和生态功能对粮食生产能力变化的敏感度降低,敏感区数量有波动且存在空间分布差异。应进一步提升辽宁省耕地多功能优化配置水平,提高粮食生产能力。

关键词：耕地多功能粮食生产能力时空演变分区敏感度