OPTIMIZATIONOFTHECONTINUOUSAFFINITY－RECYCLEEXTRACTIONPROCESS     

DONG Xiaoyan GAN Yiru SUN Yan 《天津大学学报(英文版)》1996,(1)

对单级和多级ＣＡＲＥ过程分别进行了最优化分析．单级过程的优化目标函数（Ｆ１）为ＲＥＣ和ＰＦ的积，而多级过程则将获得一定纯度的目标组分情况下的回收率和ＣＡＲＥ级数之比为优化目标函数Ｆ２．结果表明，当膜对目标和杂质组分的截留率相等时，在一定的洗脱液流速ｒｅ范围内，对于每一个ｒｅ均存在一对应的循环流速ｒｅ，使Ｆ１和Ｆ２最大，并且最大值相等；当ｒｅ一定时，最佳ｒｒ随膜的截留率和亲和载体对目标组分的结合分率的增大而降低．对于多级过程，当膜对杂质的截留小于对目标组分的截留时，只存在一组最佳的操作条件（即ｒｅ和ｒｒ）．  相似文献   

近邻传播算法的情境感知学习系统构建分析     

吴会松 《福建师大福清分校学报》2012,(5):46-51

泛在学习系统要求能有一个完整的和有组织的方式,通过情境感知推荐学习单元,使学习者可以建立一个自我管理和个性化的学习环境,利用无线网络传输和真实情境实时感应学习目标,让学习的目标由抽象转化为具体,更易于掌握。  相似文献   

Advancement in higher education: the role of marketing in building philanthropic giving     

James H. McAlexander  Harold F. Koenig  Beth DuFault 《Journal of Marketing for HIGHER EDUCATION》2013,23(2):243-256

This paper empirically explores ways in which marketers of higher education can contribute to the important task of cultivating alumni philanthropy. Advancement professionals understand that philanthropy is influenced by wealth and affinity. As marketers, we anticipate that our contribution resides with investments in building affinity. Using survey data that measure the affinity of alumni of a large US university who have been commercially screened to reveal individual wealth, this paper provides empirical evidence of the relative contributions of affinity and wealth to giving. Logistic regression analysis reveals that affinity has a greater impact on predicting the likelihood of giving than other variables, including prior giving and wealth. Important to marketers, this study emphasizes the importance of building affinity and also uncovers obstacles to affinity formation. This information can be used to bridge and repair alumni relationships with their alma mater and inform segmented marketing communications to foster alumni enthusiasm for giving.  相似文献   

Contextual influences: building brand community in large and small colleges   总被引：1，自引：1，他引：0  

J. Harry McAlexander  Harold F. Koenig 《Journal of Marketing for HIGHER EDUCATION》2013,23(1):69-84

This research extends recent efforts that have introduced and empirically tested a conceptual model of brand community in the context of higher education. This emerging literature has indicated that brand community provides a framework that can inform and guide marketing investments in ways that lead to affinity and stronger loyalty to the brand and institution. This paper presents the results of a national survey that examines the potential impact that institutional size may have on the relationships of an alumni brand community. This paper also explores the implications of the size of the educational institution on relevant and desired marketing outcomes that include the willingness to recommend the university to friends and family and a desire to purchase licensed apparel.  相似文献   

人民性是"三个代表"的显著特征 --学习《江泽民论有中国特色社会主义》     

胡和勤 《临沂师范学院学报》2003,25(4):24-27

深厚的人民性是江泽民“三个代表”思想中最为显著、最为重要的一个特征。江泽民对建设有中国特色社会主义的理论贡献,集中表现在尊重最广大人民群众的首创精神、保持同人民群众的血肉联系、代表最广大人民群众根本利益等重大问题上。抓住了人民性这一最主要的特征,就能够正确理解和把握“三个代表”重要思想的本质和核心。  相似文献   

Molecular dynamics simulation of the interactions between EHD1 EH domain and multiple peptides     

Hua Yu  Mao-Jun Wang  Nan-Xia Xuan  Zhi-Cai Shang  Jun Wu 《Journal of Zhejiang University. Science. B》2015,16(10):883-896

Objective: To provide essential information for peptide inhibitor design, the interactions of Eps15 homology domain of Eps15 homology domain-containing protein 1 (EHD1 EH domain) with three peptides containing NPF (asparagine-proline-phenylalanine), DPF (aspartic acid-proline-phenylalanine), and GPF (glycine-proline-phenylalanine) motifs were deciphered at the atomic level. The binding affinities and the underlying structure basis were investigated. Methods: Molecular dynamics (MD) simulations were performed on EHD1 EH domain/peptide complexes for 60 ns using the GROMACS package. The binding free energies were calculated and decomposed by molecular mechanics/generalized Born surface area (MM/GBSA) method using the AMBER package. The alanine scanning was performed to evaluate the binding hot spot residues using FoldX software. Results: The different binding affinities for the three peptides were affected dominantly by van der Waals interactions. Intermolecular hydrogen bonds provide the structural basis of contributions of van der Waals interactions of the flanking residues to the binding. Conclusions: van der Waals interactions should be the main consideration when we design peptide inhibitors of EHD1 EH domain with high affinities. The ability to form intermolecular hydrogen bonds with protein residues can be used as the factor for choosing the flanking residues.  相似文献   

浅论杜甫诗歌中的汉代谣谚     

邱小培 《延安教育学院学报》2010,24(6):54-55,58

在研究、探讨杜甫诗歌表现其民胞物与情怀的基础上,主要分析杜甫在其诗歌创作中如何引用汉代谣谚表达对百姓的同情,以及为何引用汉代谣谚的原因及意义。  相似文献   

企业思想政治工作与企业文化的契合性研究     

丁翠翠 《河南科技学院学报》2010,(11):27-30

随着国内与国外市场融合程度的进一步提高,企业之间的竞争日趋激烈。企业思想政治工作与企业文化作为企业之间相互竞争的＂软实力＂正逐渐受到许多企业的青睐,并日益成为构筑企业核心竞争力的重要组成部分。思想政治教育与企业文化建设实现有效地契合,可以将思想政治教育与培育企业职工的企业精神融为一体,注入时代的内容,创造崭新的工作方式,促进企业的和谐健康发展。同时,思想政治工作在企业文化建设中具有协调、提供精神动力和支持保证的作用。因而,探索二者契合的意义与有效途径,使其水乳交融、相得益彰,可以有效促使企业创造最佳的经济效益,提升企业的竞争力。  相似文献   

基于维纳复原的道路限速交通标志检测     

乔敏  孙国强 《教育技术导刊》2020,19(5):234-237

超速引发的交通事故数量急剧增加,为了提高道路驾驶安全性,提出一种基于维纳复原的道路限速交通标志检测方法。首先,对原始街景进行维纳滤波复原图像预处理;然后,根据道路限速标志牌轮廓形状和颜色等特征,在 HSI 彩色空间进行红色阈值分割、Canny 边缘检测和 Hough 圆检测,对图像中的道路限速交通标志进行检测,定位出可能是道路限速交通标志的区域;最后,根据限速标志的内部特征排除定位出的非限速交通标志区域。实验结果表明,该方法对于我国常见的 6 类限速标志检测正确率达到了 98.76%,符合限速标志检测系统的准确率要求。  相似文献   

"亲和"的美学--关于审美生态观问题的思考   总被引：11，自引：0，他引：11  

王德胜 《陕西师范大学学报(哲学社会科学版)》2001,30(4):34-40

在美学维度上,审美生态观通过对人与世界关系的整体把握而建立起来.它把生态存在当作"非技术性"对象,在人与世界关系的内在平衡性方面,致力于从"非私利"立场思考复杂的生态现象及其问题,以便有效地确立生命存在与发展的整体意识,包括对生命的虔敬与信仰、对自然存在的感受而非占有、强调生命的内在充盈而非以"创造"名义实行对外改造.在生态领域,美学的基本目标是构建以"亲和"为核心的审美生态观,这既是对于生态存在的新的美学认识,又是一种人对自身与世界关系的价值体验方式,一种新的美学价值论.  相似文献