检索结果-南通市图书馆

Excel 2003公式与函数应用宝典 G

在线全文

学校读者我要写书评

暂无评论

丛书名：美国计算机“宝典”丛书

2004年

作者：（美）john Walkenbach 邱燕明赵迎等译

本书重点讲解能在电子表格中使用的各种公式和函数，涉及处理数据和文本的公式、逻辑公式、财务公式、数组公式等。

ISBN: (数字)7121001489

ISBN: (纸本)7121001489

本书重点讲解能在电子表格中使用的各种公式和函数，涉及处理数据和文本的公式、逻辑公式、财务公式、数组公式等。

关键词：基本知识电子表格系统

来源：畅想之星图书光盘版（南... 评论

在线全文

畅想之星图书光盘版（南通市图书馆镜像）

学校读者我要写书评

暂无评论

环z.n上椭圆曲线的密钥交换协议

电子学报 2005年第1期33卷 83-87页

作者：朱文余孙琦四川大学数学学院四川成都610064

设n =pq,p,q为奇素数 ,环z. 上的椭圆曲线En(a ,b)的SOM密钥交换协议与QV密钥交换协议均选取En(a ,b)上的阶为Mn=lcm{ #Ep(a ,b) ,#Eq(a ,b) }的点G作为公钥 (称G为基点 ) ,并且限定其对应的Ep(a ,b)和Eq(a ,b)均为循环群 ,这就限制了... 详细信息

设n =pq,p,q为奇素数 ,环z. 上的椭圆曲线En(a ,b)的SOM密钥交换协议与QV密钥交换协议均选取En(a ,b)上的阶为Mn=lcm{ #Ep(a ,b) ,#Eq(a ,b) }的点G作为公钥 (称G为基点 ) ,并且限定其对应的Ep(a ,b)和Eq(a ,b)均为循环群 ,这就限制了这两个协议只能选择一类特殊的椭圆曲线En(a ,b)构作密钥交换协议 .本文指出 ,Ep(a ,b)和Eq(a ,b)均为循环群这一限定是不必要的 .本文给出了En(a,b)上存在阶为Mn 的点G的一个充分必要条件 ,并给出一个例子 ,其中Ep(a ,b)为循环群 ,Eq(a ,b)为非循环群 ,且对应的En(a ,b)上有阶为Mn 的点G .同时 ,本文选取En(a ,b)上阶为lcm{n1,m1}的点作为基点 ,这里n1,m1分别为Ep(a ,b)和Eq(a ,b)的最大循环子群的阶 .这样 ,就能够选择更多的椭圆曲线En(a ,b) ,用来构作密钥交换协议 (包括将两方之间的密钥交换协议扩展到三方 ) .

关键词：密钥交换协议环z. 环z.上的椭圆曲线

Serum vitamin D_3 does not correlate with liver fibrosis in chronic hepatitis C

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2015年第39期21卷 11152-11159页

作者： Yan Ren Mei Liu Jing z.ao Feng Ren yu Chen Jun-Feng Li Jing-yun z.ang Feng Qu Jin-Lan z.ang z.ong-Ping Duan Su-Jun z.eng Artificial Liver Center Beijing You An Hospital Capital Medical University Institute of Liver Diseases Beijing YouA n Hospital Capital Medical University State Key Laboratory of Bioactive Substance and Function of Natural Medicines Institute of Materia Medica Chinese Academy of Medical Sciences and Peking Union Medical College

AIM: To investigate the relationship between serum vitamin D3 levels and liver fibrosis or inflammation in treatment-naive Chinese patients with chronic hepatitis C(CHC).METHODS: From July 2010 to June 2011, we enrolled 122 CHC patients and 11 healthy controls from Dingxicity, Gansu Province, China. The patients were infected with Hepatitis C virus(HCV) during blood cell retransfusion following plasma donation in 1992-1995, and had never received antiviral treatment. At present, all the patients except two underwent liver biopsy with ultrasound guidance. The Scheuer Scoring System was used to evaluate hepatic inflammation and the Metavir Scoring System was used to evaluate hepatic fibrosis. Twelve-hour overnight fasting blood samples were collected in the morning of the day of biopsy. Serum levels of alanine aminotransferase, aspartate aminotransferase, total bilirubin, direct bilirubin, cholineste rase, prothrom binactivity, albumin, γ-glutamyl transpeptidase, hemoglobin, calcium and phosphorus were determined. Serum HCV RNA levels were measured by real-time PCR. Serum levels of 25-hydroxyvitamin D3 [25(OH)D3] and 24,25-dihydroxyvitamin D3 [24,25(OH)2D3] were measured by high-performance liquid chromatography tandem mass spectrometry.R E S U LT S : Serumlevels of 2 5(OH) D3 but not 24,25(OH)2D3 were significantly lower in CHC patients than in control subjects. Serum 25(OH)D3 levels did not correlate with liver fibrosis, inflammation, patient age, or levels of alanine aminotransferase, aspartate aminotransferase, total bilirubin, direct bilirubin, prothrombin activity, cholinesterase or HCV RNA. However, serum 25(OH)D3 levels did correlate with serum 24,25(OH)2D3 levels. Serum 25(OH)D3 and 24,25(OH)2D3 levels, and the 25(OH)D3/24,25(OH)2D3 ratio, have no difference among the fibrosis stages or inflammation ***: We found that serum levels of 25(OH)D3 and its degradation metabolite 24,25(OH)2D3 did not correlate with liver fibrosis in treatment-naive Chi

关键词： Hepatitis C virus 25-Hydroxyvitamin D3 24,25-Dihyd

基于换乘站点的轨道交通与常规公交运营协调模型研究

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

铁道学报 2009年第3期31卷 11-19页

作者：张宇石陈旭梅于雷何波林国鑫北京交通大学城市交通复杂系统理论与技术教育部重点实验室北京100044 德克萨斯南方大学美国休斯顿77004 北京市公共交通研究所北京100161

城市轨道交通与常规公共交通的运营协调是实现公共交通一体化的基本内容,也是提高公共交通系统自身运营效率和服务水平的重要途径。现以系统总成本费用最小为目标,对轨道交通和常规公交的协调运营组织进行优化,详细论述总费用(包括运营... 详细信息

城市轨道交通与常规公共交通的运营协调是实现公共交通一体化的基本内容,也是提高公共交通系统自身运营效率和服务水平的重要途径。现以系统总成本费用最小为目标,对轨道交通和常规公交的协调运营组织进行优化,详细论述总费用(包括运营商和乘客费用)函数的计算方法,并基于概率论方法,提出4种不同类型换乘站乘客换乘费用的确定方法,最终建立轨道交通与常规公交运营协调模型。研究表明,该模型能够有效降低公共交通系统的总体费用和乘客的换乘时间,且平峰时段相对于高峰时段的运营协调效果更明显。

关键词：轨道交通常规公交运营协调换乘概率遗传算法

Insulin-like growth factor-1 and insulin-like growth factor binding protein-3 concentrations in children with obstructive sleep apnea-hypopnea:Impact of disease duration and severity

在线全文

学校读者我要写书评

暂无评论

Insulin-like growth factor-1 and insulin-like growth factor ...

2014年浙江省医学会耳鼻咽喉头颈外科学学术年会

作者： Jin z.u yu Fang Hai-Fei Wang Xin Chen Dao-Jun yu YI Shen Department of Otorhinolaryngology Head and Neck Surgery Hangzhou First People's Hospital Affiliated to Nanjing Medical University z.ongda Hospital Affiliated to Southeast University Gene Laboratory Hangzhou First People's Hospital Affiliated to Nanjing Medical University School of Public Health Zhejiang University

Introduction:To assess insulin-like growth factor-1(IGF-1)and insulin-like growth factor binding protein-3(IGFBP-3)concentrations in children with obstructive sleep apnea-hypopnea syndrome(OSAHS)and compare the results according to disease severity and ***-one children with OSAHS underwent polysomnography and were classified as having mild,moderate,or severe ***:All children underwent bilateral tonsillectomy/adenoidectomy or ***-1 and IGFBP-3 concentrations were assessed before surgery and 3 and 6 months after ***:Before surgery,IGF-1 and IGFBP-3 concentrations(μg/L and mg/L)were significantly higher(Pz.score,IGF-1 and IGFBP-3 concentrations significantly decreased with every year of increase in ***:These results suggest that disease duration,but not severity,affects the concentrations of two important mediators of growth/development,IGF-1 and IGFBP-3,in children with OSAHS before and after surgery.

关键词： Children duration development disease growth obstructive sleep apnea hypopnea syndrome pediatric severity

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

材料的一种新型单向应力应变本构模型

材料工程 2007年第2期35卷 7-10页

作者：张于贤王红华南理工大学广州510641 桂林电子工业学院广西桂林541004

为了有效地研究自增强超高压容器的残余应力,本研究提出了一个新型的应力-应变关系模型。通过严格的数学证明,表明该模型比别的模型更接近于自增强超高压容器用钢的实际工作情况。然后以某材料为例介绍了建立该新型模型的方法,并对其误... 详细信息

为了有效地研究自增强超高压容器的残余应力,本研究提出了一个新型的应力-应变关系模型。通过严格的数学证明,表明该模型比别的模型更接近于自增强超高压容器用钢的实际工作情况。然后以某材料为例介绍了建立该新型模型的方法,并对其误差进行了分析。通过这个实例,说明了由一般的拉伸曲线求解该新型的应力-应变关系模型的可行性及可靠性,具有一定的理论意义及工程实用价值。

关键词：自增强应力-应变本构关系解析式拟合硬化参数

Effects of Cotrimoxaz.le Prophylaxis Initiation and Discontinuation on Mortality and Attrition Rates among HIV Patients Who Initiate ART in Southwest China:An Observational Cohort Study

在线全文

学校读者我要写书评

暂无评论

Biomedical and Environmental Sciences 2021年第8期34卷 646-649页

作者： z.U Jin Hui RUAN yu Hua PAN Stephen YANG Wen Min z.U Qiu Ying CHEN Huan Huan SHEN z.i Yong LAN Guang Hua XING Hui SHAO Yi Ming LI Li Ming School of Public Health Peking UniversityBeijing 100191China Guangxi Center for Disease Control and Prevention Nanning 530028GuangxiChina State Key Laboratory of Infectious Disease Prevention and Control(SKLID) Collaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesChinese Center for Disease Control and Preventio n(China CDC)Beijing 100032China Department of Health and Environ mental Sciences Xi'an Jiaotong-Liverpool UniversitySuzhou 215123JiangsuChina

Combination antiretroviral therapy(ART)reduced AIDS-related mortality and increased survival among patients living with HIV by interrupting HIV replication,enhancing immune recovery,and preventing the onset of opportunistic infections[1].In China,ART has rapidly been scaled up since the beginning of the National Free Antiretroviral Treatment Program(NFATP)in 2003[2].By the end of 2016,489,411 individuals diagnosed with HIV were receiving free antiretroviral treatment in *** is firmly committed to reducing overall AIDS-related mortality and HIV incidence within the ***,similar to other low-and middle-income countries,the NFATP is challenged by high mortality and attrition shortly after patients initiate ART[3].

关键词： mortality Observation continuation

在线全文

学校读者我要写书评

暂无评论

Internet核心技术精解第2版第二版

丛书名：万水计算机核心技术精解系列

2001年

作者：（美）john R.Levine 管伟等译

本书分为七个部分，总共包括44章。主要讲述了Internet的基本技术和文化背景，浏览器和FTP的应用，电子邮件新闻组，页面的设计，在Internet上创建一个商务公司的注意事项等内容。

ISBN: (纸本)7980044819

关键词：基本知识互连网络

来源：畅想之星图书光盘版（南... 评论

在线全文

畅想之星图书光盘版（南通市图书馆镜像）

学校读者我要写书评

暂无评论

两种排列方式光纤传像束的像质评价

光电工程 2006年第2期33卷 69-72页

作者：王慧向阳禹秉熙长春理工大学中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室吉林长春130033

根据调制传递函数对比度定义,推导了线列光纤传像束调制传递函数(MTF)的数理关系,建立了光纤直径有随机误差的线列光纤传像束MTF仿真模型,对MTF进行数值分析。通过考虑在光纤传像束中输入信号与光纤的位相匹配对MTF的影响,分析了V型槽... 详细信息

根据调制传递函数对比度定义,推导了线列光纤传像束调制传递函数(MTF)的数理关系,建立了光纤直径有随机误差的线列光纤传像束MTF仿真模型,对MTF进行数值分析。通过考虑在光纤传像束中输入信号与光纤的位相匹配对MTF的影响,分析了V型槽排列和紧密排列两种不同方式的光纤传像束的平均MTF。结果显示,有随机误差的光纤束的平均MTF值分别分布于理想传像束平均MTF曲线附近,表明了光纤自身的误差对传像束的平均MTF影响不大;V型槽排列的线列光纤束的像质优于紧密排列方式的线列光纤束。

关键词：光纤传像束调制传递函数位相匹配随机误差像质评价