DCT域的图像数字水印算法   总被引：1，自引：0，他引：1  

包全磊 《太原大学学报》2011,12(1):117-119,123

DCT域的图像数字水印算法具有不可察觉性,有较好的鲁棒性,实现了二值图像嵌入的过程。通过实验表明,该算法能够进行D/A、A/D转换及量化等信号处理和有损JPEG压缩、滤波,也能进行一般的几何变换,安全性较高。  相似文献   

潜隐在爱情书写中的政治叙事——《爱,是不能忘记的》中的爱情隐喻     

杨铃铃 《宜宾学院学报》2011,11(3):50-54

女主人公钟雨对老干部充满想象的浓烈情感夹杂了太多英雄崇拜因素。她对老干部爱情上的"忠于",被置换成知识分子对党和国家的信仰。张洁选择这种私人性表达方式,既开始了新时期文学叙事方式,也连接了"五四"文化传统,具有特殊的文学史意义。  相似文献   

Getting good at small talk: student-directed learning of social conversation skills     

Veerle Garrels 《欧洲特需教育杂志》2019,34(3):393-402

For students with autism spectrum disorders (ASD), learning social skills is an intricate but essential task to facilitate social inclusion and participation. Limited research is available on social skills interventions for adolescents with ASD and intellectual disabilities (ID). This article presents a case study that illustrates how the Self-Determined Learning Model of Instruction was used to improve self-chosen social conversation skills in a Norwegian 14-year old student with ASD and mild ID. This case study illustrates that, also for students with ASD and ID, giving them the opportunity to set personally relevant goals may improve their autonomous motivation, thereby increasing the likelihood of goal attainment.  相似文献   

广西水稻种业知识产权保护现状及发展对策     

陈玉冲  曾媛  张棵  黎丽菊  蒋显斌 《科技管理研究》2020,40(3):120-124

通过农业植物新品种、专利、地理标志等三方面分析广西水稻种业知识产权保护现状,发现广西水稻种业知识产权存在创造数量与质量不高、管理不够重视、运用效果不明显、保护效果待加强等问题。提出从六方面加强广西水稻种业知识产权保护,以促进广西水稻产业进一步发展:进行立体保护,全方位保护水稻种业知识产权;实行全程管理,提高知识产权保护与运用水平;提升专利质量,培育高价值核心专利;营造良好的知识产权保护与服务环境;加强农村知识产权教育,助力乡村振兴;以及加强种业"走出去"过程中的知识产权保护等。  相似文献   

技术引进与自主研发对经济增长的影响——基于知识产权保护视角     

杨丽君 《科研管理》2020,41(6):9-16

中国正在实施创新驱动发展战略,应进一步关注促进经济增长的技术创新的两大途径：技术引进与自主研发。若实现了技术引进与自主研发的途径整合,则有益于缩小技术差距,但整合过程不会自发演进,需有良好的制度环境;仅是技术模仿,无自主研发创新,无法缩小技术差距。技术具有外溢性,不同的知识产权保护水平下,存在不同程度的非正式的技术转移以及不同的技术引进难度。以知识产权交易强度为门槛变量,结合门槛模型对比分析发现,2001-2015年整体上技术引进对中国经济增长的促进作用比自主研发更显著;知识产权交易规模的扩大以及低知识产权交易强度下的技术引进与自主研发,对中国经济增长的促进作用更加明显;严重的专利侵权会阻碍经济增长。知识产权保护力度不足时,技术创新领域的市场失灵严重,即使短期对经济增长的促进作用较为明显,但长期由于自主创新的匮乏,将不利于经济增长。  相似文献   

专利权质押融资的制约因素分析及对策——以浙江省为例     

钱水土  沈睿康  王雅芬 《科技管理研究》2020,40(16):184-191

专利权质押融资是21世纪知识经济时代下知识资本与金融资源相融合的产物,为破解科技型中小企业融资难问题提供了新思路。2009年以来浙江省先后出台一系列政策措施大力支持专利权质押融资发展,取得一定成效但同时也存在着专利权转化为融资资金的比例较低、风险分担机制不健全、区域发展不平衡以及专利整体价值较低等问题亟待解决。在对制约浙江省专利权质押融资发展因素分析基础上,分别从专利权质押融资各参与主体的角度提出包括完善治理结构、提升专利质量、加强专利权管理与保护,设立科创支行或事业部、加大专利权金融产品创新力度,强化企业信息管理、健全专利权价值评估机制和风险分担机制、完善专利权交易平台和设立政策性银行等相应的对策建议,以期促进浙江省专利权质押融资工作发展和完善。  相似文献   

Low-achieving (learning disabled) pupils in year 2 of the primary school in Hungary     

Marta Zsoldos 《欧洲特需教育杂志》2013,28(2):243-250

We selected 60 low-achieving children from a sample of 263 pupils in Year 2 of the primary school in order to analyse the problems of learning disabilities. We explored two questions: whether teachers evaluate the pupils' school performances correctly; and what kind of relationship exists between the low-achieving pupils' cognitive abilities and their school performance. Methods used were questionnaires, pedagogical tests and traditional psychological tests. We obtained the following results: the teachers generally evaluate the pupils' school performance fairly well, but they are inclined to assume a close correlation between the achievements in different subjects, and the teachers' knowledge of the low-achieving children is more reliable regarding the group of pupils as a whole rather than each pupil individually; and the low-achieving pupils' cognitive learning abilities prove to be significantly weaker than their general intellectual abilities.  相似文献   

The influence of teacher practice placement on one's beliefs about intellectual disability: a student's reflection     

OWEN DOODY  MORGAN O CONNOR 《Support for Learning》2012,27(3):113-118

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Universities and government‐sponsored contract research: an Australian case study     

《普罗米修斯》2012,30(4):439-455

Based on interviews, this article provides a case study of the experiences of academic staff at one Australian regional university in undertaking contract research projects sponsored by government departments and agencies. Academics from a surprisingly diverse range of disciplines are attracted to government‐sponsored research for a variety of reasons but particularly important is the financial support provided for research projects and postgraduate research students. Projects vary in scale, amounts of funding involved and purposes, with research activities covering a wide range of different activities including collection and analysis of data, provision of documentation on good practice, design of implementation strategies, evaluations, organisational reviews and policy recommendations. Overall, respondents are highly positive about their experiences, despite problems such as delays in payment of funds, inappropriately restricted timelines, frequent changes in senior agency personnel, unrealistic expectations, and restrictions in the use of data and publication of results. While many academics from different disciplines provide policy recommendations and carry out evaluative studies, few are well informed about the extent to which their work is actually utilised.  相似文献   

Inter‐firm Migration of Tacit Knowledge: Law and Policy1     

《普罗米修斯》2012,30(3):285-306

Abstract

Much knowledge is diffused by the exchange of property rights in intangibles. But tacit knowledge, not being subject to property rights, is instead diffused by migration of knowledgeable individuals between firms. The law impacts significantly on this diffusion mechanism, in particular those rules that determine the use individuals may make of their tacit knowledge after migration to a different firm. The general principle underlying the relevant law is that individuals are free to migrate with all their tacit knowledge. Nonetheless there are some narrow exceptions to this principle. That these exceptions remain narrow and carefully policed by the courts is important because imposing too many restraints on use of tacit knowledge post‐term would have a negative impact on real innovation.  相似文献