New predictive control algorithms based on Least Squares Support Vector Machines

INTRODUCTION Model predictive control (MPC), based on pre-dictive model and receding horizon optimization, has become an attractive feedback control strategy, be-cause it has found successful applications, especially in the process industry. For this kind of control strategy, the predictive model is a crucial component because the essence of MPC is to optimize the fore-cast of process behavior (Rawlings, 2000), and the forecast is accomplished with the predictive model. If the controll…     

傣族传统民居的变异与保护和创新

随着社会发展,傣族传统民居干栏结构不断发生变异,目前呈现出实质性变异的趋势——汉化。传统民居是一个民族文化的基本特征之一,因此应从明确傣族民居的特有价值、正确处理保护与创新关系、坚持傣族民居的建筑风格、合理使用现代建材4个方面对傣族传统民居进行保护和创新。     

南京市地价空间结构的演变

城市地价是一个具有时空性质的多维概念,随着土地市场的日渐发育,地价成为土地市场运作的重要信息和价值判断标准,而城市基准地价的更新速度慢,不能及时、准确地反映城市的地价水平和地价动态分布规律。与此同时,城市地价动态监测点的地价信息能够分年度及时、准确的更新。因此,利用地价动态监测样点的地价信息,快速、及时的分析地价的空间结构特征、时空演变趋势成为当今土地管理中值得深入探讨的课题。本文以南京市主城区为研究区域,以住宅地价为研究对象,依托南京市地价动态监测和土地市场交易数据,在探索性空间数据分析（ESDA）和地统计学方法的支持下,建立了2001年-2004年南京市主城区住宅用地数字地价模型,从宏观层面上,研究了整个区域的住宅地价空间演化趋势,从中观层面上,选取典型地价剖面研究了住宅地价的时间演化趋势,以期及时、准确的掌握城市的地价水平和地价动态分布规律,为政府调节土地市场起到一定的借鉴作用。     

三江源地区植被盖度与居民点的关系研究

本文基于人口与环境相关联的地理视角,运用最大化合成法、缓冲区分析法,研究三江源地区植被分布与人口、居民点的关系。研究表明:①从大的空间尺度看,居民点主要分布在NDVI条件好的区域;NDVI条件差的区域,居民点分布较少;②在几十公里距离范围内,植被盖度与离居民点的距离的关系是:居民点密度大的地区,随着距居民点距离的增加NDVI呈上升趋势;居民点密度居中的地区,随着距居民点距离的增加NDVI呈下降趋势;居民点密度小的地区,NDVI与距离居民点远近没有明显相关关系;③对典型牧业居民点小尺度范围内人口分布与NDVI关系的研究发现,距居民点2km范围内,由于人类的放牧活动造成了植被的退化,NDVI较低;2～4km范围内,植被受人类放牧活动影响越来越小,随着距离的增加NDVI呈显著上升态势;4～10km范围内,因为自然条件的差异,NDVI随着距离的增加逐渐变小;④在1998年-2009年即三江源生态治理工程期间,NDVI总体上是上升的。     

An analysis of associations between residential and school mobility and educational outcomes in South African urban children: The Birth to Twenty cohort

Using data from Birth to Twenty, a cohort of South African urban children, the current paper investigates the relationships between residential and school mobility and a set of educational outcomes. The findings provide some evidence of a positive association between changes in residence and numeracy and literacy scores, and school mobility was found to be associated with grade repetition, however, no relationship was observed between changes in school and competency in numeracy and literacy. The South African study provides a counter example to trends observed in higher-income countries, while highlighting that associations are likely to be context specific.     

冯批失范疑窦频——冯其庸先生《瓜饭楼重校评批〈红楼梦〉》谬误辩难

资深红学家冯其庸先生花数十年心血编纂一部长达160万字的巨著《瓜饭楼重校评批〈红楼梦〉》,且被吹嘘为“发前人所未发,为当代红学的最新成果”,“是一部可读性、欣赏性极强,且有极高收藏价值的关于《红楼梦》的传世佳本。”研读后始知此乃虚浮夸饰之词。仅从上卷前40回的评批中就凸现出包括常识性、知识性、思想性、学术性等方面的失范现象达14处之多。为减轻对广大读者和后学的贻误和不良影响,特逐条加以辩难匡正。     

The institutional shaping of children’s educational experiences in secure custody: A case study of a secure children’s home in England

Secure Children’s Homes accommodate some of the most vulnerable children in society and yet they have evaded sustained academic attention. Consequently, little is known about children’s education in this type of setting. Through the lens of institutional ethnography, this paper explores how experiences of education inside one Secure Children’s Home in England are shaped by the institution. This approach makes visible that while the small-scale of the setting is of value, the mix of children accommodated for qualitatively different reasons is problematic for both the delivery of education and the children’s engagement in learning.     

An exploration of the lived experiences of Year Six children on a residential trip to Normandy

Over the last decade, a plethora of research has been undertaken into learning outside the classroom and its resultant benefits on pupils [Dillon, J., M. Rickinson, K. Teamey, M. Morris, M. Y. Choi, D. Sanders, and P. Benefield. 2006. “The Value of Outdoor Learning: Evidence from Research in the UK and Elsewhere.” School Science Review 87 (320): 107–111; Peacock, A. 2006. Changing Minds: The Lasting Impact of School Trips. University of Exeter; Malone, K. 2008. Every Experience Matters. Farming and Countryside Education; Waite, S. 2011. Children Learning Outside the Classroom from Birth to Eleven. London: Sage; Beames, S., P. Higgins, and R. Nicol. 2012. Learning Outside the Classroom: Theory Guidelines and Practice. Abingdon: Routledge). Despite this wealth of research very little has been conducted into residential field trips. The research carried out in this study focuses specifically on exploring the residential experience of a group of 10- and 11-year-old children from a junior school in the UK who participated in a one-week residential field trip to Normandy, France, staying in a Chateau and undertaking both cultural and historical activities. The findings reveal what children can gain from participating in such an experience.     

对于测线调查样本的生物分布密度推定的几种方法的比较研究

用几种不同的密度推定法,对测线调查样本进行密度推定。使用的最佳带幅宽有的依赖于探知函数,有的不依赖探知函数,还用到经典的最大似然估计法。把5种密度推定法用于计算机模拟产生测线调查的距离数据,由统计量RRMSE和RB对推定值进行评价,来验证其优劣。     

Science teachers' conceptions of teaching and learning,ICT efficacy,ICT professional development and ICT practices enacted in their classrooms

This study assessed several precursors that might be connected to Information and Communication Technology (ICT) practices enacted in classrooms, namely, science teachers' conception of traditional versus constructivist teaching and learning, their sense of efficacy, ICT efficacy, and ICT professional development. Data were gathered from 303 science teachers. According to the results, constructivist conceptions exerted moderate effects on the teachers' sense of efficacy constructs, which in turn increased their ICT efficacy. Additional results pointed to the positive mediation role of teachers' ICT professional development in linking their ICT efficacy to ICT use for constructivist activities in their science classroom.