oalib

OALib Journal期刊

ISSN: 2333-9721

费用:99美元

投稿

时间不限

2016 ( 372 )

2015 ( 13297 )

2014 ( 13448 )

2013 ( 13768 )

自定义范围…

匹配条件: “刘冰雨” ,找到相关结果约193241条。
列表显示的所有文章,均可免费获取
第1页/共193241条
每页显示
Three-dimensional simulation for early breast cancer detection by ultra-wideband
超宽带微波检测早期乳腺肿瘤三维仿真

Xiao Xia,Xu Li,Liu Bing-Yu,
肖夏
,徐立,冰雨

物理学报 , 2013,
Abstract: Ultra-wideband (UWB) microwave imaging technology can be used as an effective method of detecting early breast cancer, which is based on the difference of the electrical characteristic between normal breast tissues and tumor. The method can provide both the sufficient resolution and the adequate penetration depth in the breast. In this paper, the finite difference time domain method is employed to simulate the microwave propagation in three-dimensional breast tissue. The single pole Debye model is used to approximate the real electrical properties of the breast organism. The antenna arrays made up of 8 emitters and 9 detectors are performed for the detection. The confocal imaging algorithm is employed for the reconstruction of the breast tissue and location. The tumor information displayed in the reconstructed breast image verifies the correctness of the confocal imaging algorithm and the effectiveness of the UWB microwave imaging technique applied to the early breast cancer detection.
植纤复合材料新进展首条生产线已通过省级签定

复合材料学报 , 1987,
Abstract: 创新性的一年生植物纤维复合材料—麻屑/树脂板的生产线,已于1987年4月30日,在安徽省舒城县新型材料厂通过了省级鉴定。鉴定会由省科委主持,省的教委、经委、计委和县委以及国内一些院校的领导参加了会议。鉴定委员会由国内和省内13个单位的专家、学者组成。省电视台对会议进行了录象并播放。与会者对我国(也是世界上)的第一条植纤复合材料生产线投入正常的工业化生产,给予了很高的评价。
文化部召开全国创建文明图书馆活动经验交流会

中国图书馆学报 , 1989,
Abstract:
中国土地沙漠化经济损失评估

中国沙漠 , 2006,
Abstract: 以1999年国家荒漠化监测数据为基准,采用灾害经济评价方法,20世纪末我国沙漠化造成的直接经济损失每年约为1281.41亿元。其中,土地沙漠化造成资源损失955.71亿元,占总损失的74.58%;对农牧业生产造成损失266.99亿元,占总损失的20.84%。研究表明,全国每年因土地沙漠化所造成的经济损失占当年全国GDP的1.41%,占我国土地沙漠化土地主要分布省区(内蒙古、甘肃、新疆、青海、宁夏、陕西)当年GDP的23.64%,相当于上述五省区1999年财政收入的3.60倍
强化市场观念 抓好科技进步

科技进步与对策 , 1994,
Abstract: 指出市场经济体制对企业科技进步工作提出了新的任务,论述了武钢抓的若干项重点科技进步工作。市场科技进步
内陆水体反射波谱测量方法研究

重庆师范大学学报(自然科学版) , 2006, DOI: 10.11721/cqnuj20060419
Abstract: 利用野外光谱仪,通过垂直水面和倾斜测量两种测量方法得到太湖9个月份的水体波谱信息,分别对这两种不同的测量方法,利用和其对应的数据处理手段和数据分析方法进行了数据精度的分析,并和常规水质取样结果结合,进一步得到比较理想的水体叶绿素与高光谱遥感的相关关系模型,并对模型精度进行了分析。结果表明,两种测量方法所得数据的质量相差不大,基于二者所测数据进行的模型分析,均达到较高的精度。
非洲爪蟾的碱性螺旋-环-螺旋转录因子的鉴定与初步分析
Genome-Wide Survey, Identification and Preliminary Analysis of Xenopus Laevis Bhlh Transcription Factors
 [PDF]

武艺
Hans Journal of Biomedicine (HJBM) , 2011, DOI: 10.12677/hjbm.2011.11002
Abstract:
碱性螺旋-环-螺旋(bHLH)转录因子在真核生物的生长发育相关的基因表达调控过程中发挥着重要的作用。本文根据现有非洲爪蟾基因组数据,利用生物信息学方法初步鉴定爪蟾的bHLH基因,收集了其结构、家族分类和GO功能富集等信息,进行了初步分析。结果,在非洲爪蟾基因组数据库中共发现98个bHLH转录因子,它们可以分别归到6大组(A-F)的32个亚家族中。通过基因本体论(GO)的富集分布统计发现有42个显著富集分布的GO注释语句,其中转录调控活性(GO:0030528)、转录调控(GO:0045449)、DNA结合(GO:0003677)、转录(GO:0006350)和DNA依赖的转录调控(GO:0006355)等出现的频率很高,表明这些GO术语是爪蟾bHLH基因的共同功能;此外,许多爪蟾bHLH基因在一些重要的发育或生理过程(如肌肉器官和眼的发育)中发挥着重要的调控作用。这些研究结果将有助于进一步的研究。
The basic helix-loop-helix (bHLH) transcription factors play essential roles in the regulation of eukaryotic growth and development and gene transcription. In this study, we conducted a genome-wide survey using the Xenopus Laevis ongoing genome project databases, and identified 98 bHLH sequences in Xenopus Laevis genome. Phylogenetic analyses revealed those bHLH genes belong to 32 families in the super-groups (A-F) in this research. Gene Ontology (GO) enrichment statistics showed 42 significant GO annotations counted in frequency. Statistical analysis of the Gene Ontology annotations showed that these 98 bHLH proteins tend to be related to transcription regulator activity (GO:0030528), regulation of transcription (GO:0045449), DNA binding (GO:0003677), transcription (GO:0006350), DNA-dependent regulation of transcription (GO:0006355), expected from the common GO categories of transcriptional factors. A number of bHLH genes play regulation significant role in special development or physiology processes, such as muscle organ development and eye development. This preliminary study provides useful information for further researches on Xenopus Laevis.
新时代高校高校教师素质与能力结构探究
New Era University College Teachers to Explore the Quality and Capacity of the Structure
 [PDF]

小兵
Advances in Education (AE) , 2012, DOI: 10.12677/ae.2012.21002
Abstract:

高校教师是高等教育人才培养工作的主要实施者,是提高高等教育质量的根本保证。高校教师应具备什么样的素质与能力结构,已成为高校普遍关心的问题。在对了解高校教师素质与能力的结构因素。探讨了对其发展和提高方向。
Teacher training in higher education the main perpetrators of the work is to improve the quality of higher education’s fundamental guarantee. What college teachers should have the quality and capacity of the structure, has become a common concern. I have explored its direction of development and improvement through understanding of the teachers’ quality and ability in university.

市场化与民族性并重:谈羌族刺绣旅游商品的开发与营销
Market-Orientation and the Preservation of National Characteristics: A Discussion on the Exploitation and Marketing of Qiang People’s Embroidery
 [PDF]


Modern Marketing (MOM) , 2012, DOI: 10.12677/mom.2012.21002
Abstract: 羌族是一个历史悠久、文化灿烂的民族,在漫长的历史发展进程中,羌族人民创造出了多姿多彩、独特辉煌的民族文化,其中刺绣以其绚丽多彩、美观实用、巧夺天工而获得世人的称赞。羌族刺绣具有重要的旅游开发价值,而针对该旅游商品的研究却没有得到足够的关注。本文以四川理县桃坪羌寨为研究地点,通过游客的问卷调查,对调查结果进行分析,对羌族刺绣这一特殊旅游商品的经营现状进行分析,并对其开发和营销提出建议。
With a glorious history and brilliant culture, the Qiang national minority has created a colorful culture with its unique national characteristics. The Qiang People’s Embroidery which is artistic, practical and intelligent designed is renowned both at home and abroad. Thus, Qiang people’s embroidery has the im- portant value of tourism exploitation. However studies on this tourist commodity are still fewer. Taking the Taoping Qiang Village which is located in Li County of Sichuan Province, this article delineates the present situation of the Qiang people’s embroidery and puts forward the proposal to its development and marketing strategy based on a questionnaire survey to the tourists.
新升本科院校人力资源管理初探
Study on the Management of Human Resources for New Universities and Colleges
 [PDF]

雪峰
Modern Management (MM) , 2011, DOI: 10.12677/mm.2011.13022
Abstract: 本文借助管理学当中的有关理论和方法,采用定量分析和定性分析相结合的方式,对新升本科院校在人力资源管理方面存在的问题进行了剖析。人力资源配置方面主要存在如下问题,即:教师总量缺乏,教师负担重;教师使用效率低,未能充分挖掘教师潜力;教师职称结构不合理,高职称教师年龄偏大;教师学历结构不合理,现有教师中,本科学历占绝大比重,硕、博等高学历人员比重低;教师知识结构不合理;并且针对如上问题从盘活存量资源、提高增量资源两个方面提出了优化人力资源配置的思路。其结论是:由于客观条件的限制、管理者思想意识转变的不够迅速影响了新升本科院校人力资源的合理配置,因而迫切需要完善和创新制度、研究制定和实施策略。
This study used case studies in the field to analyze the problems of human resources management of new universities and colleges and presented the ways of rational distribution of human resources through the use of observation, collection and access to college files; log the minutes, as well as specific documents. The conclusion of this study is: we can find that the limitation of existing conditions from the current problems in the process of Human resource allocation at new universities and colleges, the slow changes of ideology of the administrators has a quick influence on Human resources allocation of the college
第1页/共193241条
每页显示


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.