土荆芥浸提液对几种种子萌发的化感作用     

刘荷芬  许桂芳  李丁涛  廖安龙 《河南科技学院学报》2011,39(1)

采用室内生物测定法,以小麦,油菜,上海青等作物为受体,研究了土荆芥的化感作用.结果表明:①土荆芥叶的浸提液对3种作物种子萌发均具有抑制作用,且这种抑制作用随着浸提液浓度的增加而增强;②浓度为0.01g/mL和0.02g/mL的茎的浸提液对上海青、油菜的幼苗生长有促进作用;③相同浓度的土荆芥叶浸提液对供试种子萌发的的抑制作用强于茎浸提液.  相似文献   

Identity: a complex structure for researching students’ academic behavior in science and mathematics     

Mehmet Aydeniz  Lynn Liao Hodge 《Cultural Studies of Science Education》2011,6(2):509-523

This article is a response to Pike and Dunne’s research. The focus of their analysis is on reflections of studying science post-16. Pike and Dunne draw attention to under enrollments in science, technology, engineering, and mathematics (STEM) fields, in particular, in the field of physics, chemistry and biology in the United Kingdom. We provide an analysis of how the authors conceptualize the problem of scientific career choices, the theoretical framework through which they study the problem, and the methodology they use to collect and analyze data. In addition, we examine the perspective they provide in light of new developments in the field of students’ attitudes towards science and mathematics. More precisely, we draw attention to and explicate the authors’ use of identity from the perspective of emerging theories that explore the relationships between the learner and culture in the context of science and mathematics.  相似文献   

英语应用能力考试听力题型内容分析和答题策略     

廖淑娜 《佳木斯教育学院学报》2015,(4):246-247

对英语应用能力考试中听力题型内容及考生在考试中存在的问题进行分析,提出了有效的答题策略。  相似文献   

浅谈校地合作办学下的校园文化建设     

黄国栋 《佳木斯教育学院学报》2015,(3):132+134

校地合作办学整体办学时间短,机制尚不完善,校园文化建设对校地合作办学的持续发展有着不可替代的作用。本文主要从校园文化的内涵、重要性以及对校地合作办学校园文化建设的几点思考和建议进行论述。  相似文献   

浅谈少数民族预科基础写作课程教学的现状及对策——以湖北民族学院科技学院为例     

廖正丽 《佳木斯教育学院学报》2015,(2):164+166

少数民族预科汉语基础写作是预科教育的基础课程,其教学目标在于通过培养预科学生汉语听、说、读、写的能力,提高其书面表达及口头表达的能力。然而,湖北民族学院科技学院少数民族预科基础写作教学存在很多不足。本文力求在分析本校少数民族预科写作教学现状的基础上,探究相应对策,以提高教学质量。  相似文献   

民办高校考风浅析     

廖自娜 《佳木斯教育学院学报》2015,(6)

针对民办高校考试现状及存在的考试违纪、作弊等考风不正现象,结合自身教务管理经验,从加强民办高校考风建设的4个原则,展开加强其建设的新思路。  相似文献   

全球化场域中社会主义意识形态话语权的变化与建构     

廖小琴 《教学与研究》2015,(4):12-20

在全球政治、经济、文化的相互作用下,意识形态的政治话语权中心地位被打破,文化话语权彰显;主流思想文化话语权面临被分化、淡化等的处境与认同危机;作为规制个体精神生活的话语权受到生活碎片化、选择多样化,以及消费主义生活方式的挑战.考察和研究全球化场域中意识形态话语权的变化及其特点,以马克思主义为指导,以社会主义核心价值观为基本遵循,加强社会主义意识形态话语权建构,这对于我们有效应对当前意识形态领域的斗争,巩固马克思主义在意识形态领域的指导地位,牢牢掌握社会主义意识形态话语权,具有十分重要的意义和作用.  相似文献   

农耕文化:激励农村妇女事业发展的重要精神力量     

廖和平  文成豪 《常州大学学报(社会科学版)》2022,23(2):1-8

  相似文献   

关于高校图书馆社会化服务社会认同问题的思考     

廖利香 《科技广场》2014,(5):146-149

在阐述社会认同理论与高校图书馆社会化服务概念的基础上,从理论和实践两方面论述了高校图书馆社会化服务社会认同的状况,并分析了政府部门、图书馆、社会民众以及社会组织三者对高校图书馆社会化服务的社会认同影响,最后提出了增强高校图书馆社会化服务社会认同的策略。  相似文献   

An improvement on the transient response of tracking for the sampled-data system based on an improved PD-type iterative learning control     

Fu-Ming Chen  Jason Sheng-Hong Tsai  Ying-Ting Liao  Shu-Mei Guo  Ming-Chung Ho  Fu-Zen Shaw  Leang-San Shieh 《Journal of The Franklin Institute》2014

An improvement on the transient response of tracking for the sampled-data system based on an improved PD-type iterative learning control (ILC) is proposed in this paper. The developed analog ILC method and the high-gain property tracker design methodology are first combined to significantly reduce learning epochs and overcome the initial condition shift problem and discontinuous reference input in the traditional ILC. Besides, the proposed ILC improves the transient response and decreases the rate of weighting matrices Q$Q$ to R$R$ under the traditional linear quadratic tracker design. First, the off-line observer/Kalman filter identification (OKID) is used to determine the appropriate (low-) order system parameters and state estimator for the physical system with unknown system equation, so that the model-based PD-type ILC can be implemented for practical applications. Then, to improve the transient response and decrease the control effort, the proportional difference type (PD-type) ILC algorithm is combined with the high-gain property linear quadratic tracker (LQT) design to construct the high performance tracker for the model-based sampled-data systems. Furthermore, the discrete-time version high performance tracker design for the unknown stochastic sampled-data system via the iterative learning control method is proposed in this paper based on the Euler method and the digital redesign approach. Finally, some examples are given for illustrating the effectiveness of the proposed method.  相似文献