A novel method for mobile robot simultaneous localization and mapping   总被引：2，自引：0，他引：2  

LI Mao-hai HONG Bing-rong LUO Rong-hua WEI Zhen-hua 《浙江大学学报(A卷英文版)》2006,7(6):937-944

INTRODUCTION A key prerequisite for a truly autonomous robot is that it can simultaneously localize itself and accu-rately map its surroundings (Kortenkamp et al., 1998), which is known as Simultaneous Localization and Mapping (SLAM), which, when phrased as a state estimation problem, involves a variable number of dimensions. Murphy and Russell (2001) adopted Rao-Blackwellized particle filters (RBPFs) as an effective way for representing alternative hypotheses on robot paths and ass…  相似文献   

从"上海五国"机制到"上海合作组织"进程:非传统安全视角分析     

岳爱武  牛天秀 《金陵科技学院学报(社会科学版)》2005,19(3):15-19

冷战结束后，传统军事安全因素对国际社会秩序的威胁程度大大降低，而由非传统安全威胁引发地区性骚乱和冲突的危险性明显上升。在从“上海五国”机制发展为“上海合作组织”的进程中，各相关国家在成功解决共同面临的军事安全问题后，即转入到对恐怖主义、极端主义、分裂主义等恶势力的打击，并推动相互间的合作向经济、文化、社会保障等更广泛的领域中扩展。非传统安全的特征，要求“上海合作组织”树立综合安全观，发展以互利合作为主题的新型国家关系，逐渐成为一个更具开放性的组织。  相似文献   

丝素改性胶原膜的肝素化     

冯桂龙 《襄樊学院学报》2004,25(2):39-42

以1-(3-二甲氨基丙基)-3-乙基碳二亚胺(简称EDCI)为缩合剂对丝素改性胶原膜进行了肝素固定化,用X光电子能谱分析了材料的表面性质. 测定了固定化肝素的量并研究了固定化肝素的稳定性. 结果表明固定化肝素量为2.34μg/cm-2,体外释放试验表明肝素量虽有下降但有较好的稳定性.  相似文献   

阮元教育思想探析     

周玲 《张家口职业技术学院学报》2005,18(4):6-10

清代著名学者阮元,创办了新式书院诂经精舍和学海堂,旨在培养有"经世致用"、对社会有用的人才.书院提倡德才兼备;主张因材施教,自由探讨;强调实事求是,学以致用;学术研究和教学相结合;确立破旧立新、推举学长的教学体制.倡导了实践,培养了学生的实际能力.阮元的教育思想和实践对清末的教育界产生了深远的影响,为中国的教育事业做出了突出的贡献.  相似文献   

EBF网络特征映射和恢复及其在鲁棒话者识别中的应用     

李昕  郑宇  江芳泽 《上海大学学报(英文版)》2002,6(4)

The performance of speaker verification systems is often compromised under real-world environments. For example, variations in handset characteristics could cause severe performance degradation. This paper presents a novel method to overcome this problem by using a non-linear handset mapper. Under this method, a mapper is constructed by training an elliptical basis function network using distorted speech features as inputs and the corresponding clean features as the desired outputs. During feature recuperation, clean features are recovered by feeding the distorted features to the feature mapper. The recovered features are then presented to a speaker model as if they were derived from clean speech. Experimental evaluations based on 258 speakers of the TIMIT and NTIMIT corpuses suggest that the feature mappers improve the verification performance remarkably.  相似文献   

5-溴水杨醛甘氨酸修饰碳糊电极测定微量Cu2+的研究     

匡云飞  邹建陵  李薇  杨颖群 《衡阳师范学院学报》2006,27(6):44-46

在pH=9.0 H3BO3-Na2B4O7缓冲体系中,以5-溴水杨醛甘氨酸修饰碳糊电极为工作电极,Cu2 于 120mV(vs.SCE)处产生一灵敏的吸附波,其二阶导数峰电流与Cu2 浓度在4.0×10-9~8.0×10-7mol.dm-3范围内呈良好的线性关系,相关系数为0.9964,检出限为6.0×10-10mol.dm-3(3倍信噪比)。应用该法测定发样中Cu2 的含量,结果令人满意。  相似文献   

Children’s emotional and behavioral responses to peer provocation and early school adjustment     

Maria S. Poulou  Hideko H. Bassett 《Pastoral Care in Education》2018,36(3):205-222

ABSTRACT

Even very young children think about their own and others’ behavior, including emotions. Such cognitions and emotions about the self and others convey information that is crucial to social interactions and relationships. The current study based on an integrated model of emotion processes and cognition in social information processing (SIP) aimed to explore students’ emotional and behavioral responses in SIP choices, and their association with teacher-reported early school adjustment. Two-hundred and thirty pre-school and first-grade primary school students were interviewed using the Challenging Situations Task (CST). CST assessed students’ emotional and behavioral responses to 12 unambiguous hypothetical peer provocation situations. Children’s preschool and first-grade primary teachers rated children’s early school adjustment with the Social Competence and Behavior Evaluation (SCBE-30) measure. The results revealed that children chose mainly sad and angry emotions and socially competent and passive behaviors. We found a relationship both between sad emotions and socially competent behavior choices, and between angry emotion and aggressive behavior choices. Sad emotions and aggressive behavior choices were the main predictors of school adjustment. Children’s responses to peer provocation situations varied depending on how the children interpreted the situations. The results address the importance of children’s SIP and school adjustment.  相似文献   

再论高等职业教育是一种类型     

陈英杰 《三门峡职业技术学院学报》2007,6(3):1-4

本文从世界高等教育发展史、我国高等职业教育发展史和我国学位制度的演变说明高等职业教育是一种类型,并对今后我国职业教育的发展从认识上、制度上、具体办学上相应提出了建议。  相似文献   

宏编程技术探析及其在数控中工中的应用     

林红梅 《闽西职业技术学院学报》2007,9(2):54-58

探析了宏编程技术及其扩展数控系统功能的使用。通过例子阐述了数控加工中采用宏编程技术的重要作用,为解决一些特殊及复杂零件的加工程序编制问题提供了思路。  相似文献   

Pre-service and In-service Secondary School Teachers’ Knowledge about Attention-deficit Hyperactivity Disorder (ADHD) and Attitudes toward Students with ADHD     

Limeng Liang 《International Journal of Disability, Development & Education》2016,63(3):369-383

This article reports on a mixed-method inquiry into pre-service and in-service secondary school teachers’ knowledge about Attention-deficit Hyperactivity Disorder (ADHD) and attitudes toward students with this disorder in Hong Kong. The inquiry revealed no differences between pre-service and in-service secondary school teachers concerning their knowledge of ADHD and attitudes toward students with ADHD. It also identified possible sources of participants’ knowledge and a variety of factors underlying their attitudes toward students with ADHD including sociocultural beliefs and working conditions. The findings call for teacher educators to develop better education programmes to support both pre-service and in-service teachers in undertaking the challenging task of teaching students with ADHD.  相似文献