多氢酸酸化技术及其应用

砂岩储层酸化的常规土酸体系存在与矿物反应速度快、酸化液的有效距离短和容易产生二次沉淀等问题。现存的缓速酸酸液体系不能克服粘土和石英界面反应速率的巨大反差，新的深度酸化工艺可以在一定程度上增加酸液的穿透距离，但工艺繁琐，且仍然不能解决沉淀、堵塞问题。多氢酸体系与现存的HF酸体系相比，其反应速度慢，溶解能力强，且具有良好的防垢性能和分散性能，可以抑制井眼附近的地层伤害，有效控制二次沉淀等优点。本研究对多氢酸的酸度特性、溶蚀性能、润湿性、静态腐蚀性以及多氢酸的分散和防垢性能进行了室内测试，并对土酸、氟硼酸及多氢酸进行了酸化效果实验评价。室内实验及现场应用表明，多氢酸性能优越，可明显提高酸化效果。     

Just another brick in the wall? The relationship between classroom-based political education and the political interest of young adults in Switzerland

This article asks whether political education at upper secondary school – i.e. shortly before or at the age when young people receive the right to vote – affects individual political interest as well as differences in political interest between social groups. Empirically, we use a novel data set combining individual student data with information on classroom-based political education as well as teacher characteristics. We do not find support for a more or less automatic and positive effect of classroom-based political education on young people’s political interest. Whereas we analyzed three dimensions of political education (knowledge, skills, arousing interest in politics), the skills dimension was the only one that exhibited a consistent positive (and mostly significant) relationship with young peoples’ political interest. Moreover, classroom-based political education seems not to compensate for a lack of political socialization at home but rather tends to affect students with politically interested parents most strongly.     

Nonparametric regression with cross‐classified responses

In this article, we develop regression models with cross‐classified responses. Conditional independence structures can be explored/exploited through the selective inclusion/exclusion of terms in a certain functional ANOVA decomposition, and the estimation is done nonparametrically via the penalized likelihood method. A cohort of computational and data analytical tools are presented, which include cross‐validation for smoothing parameter selection, Kullback–Leibler projection for model selection, and Bayesian confidence intervals for odds ratios. Random effects are introduced to model possible correlations such as those found in longitudinal and clustered data. Empirical performances of the methods are explored in simulation studies of limited scales, and a real data example is presented using some eyetracking data from linguistic studies. The techniques are implemented in a suite of R functions, whose usage is briefly described in the appendix. The Canadian Journal of Statistics 39: 591–609; 2011. © 2011 Statistical Society of Canada     

Optimum covariate designs in partially balanced incomplete block (PBIB) design set-ups

The use of covariates in block designs is necessary when the covariates cannot be controlled like the blocking factor in the experiment. In this paper, we consider the situation where there is some flexibility for selection in the values of the covariates. The choice of values of the covariates for a given block design attaining minimum variance for estimation of each of the parameters has attracted attention in recent times. Optimum covariate designs in simple set-ups such as completely randomised design (CRD), randomised block design (RBD) and some series of balanced incomplete block design (BIBD) have already been considered. In this paper, optimum covariate designs have been considered for the more complex set-ups of different partially balanced incomplete block (PBIB) designs, which are popular among practitioners. The optimum covariate designs depend much on the methods of construction of the basic PBIB designs. Different combinatorial arrangements and tools such as orthogonal arrays, Hadamard matrices and different kinds of products of matrices viz. Khatri–Rao product, Kronecker product have been conveniently used to construct optimum covariate designs with as many covariates as possible.     

西安经济技术开发区二次创业发展阶段主导产业的选择及对策

该研究报告立足西安经济技术开发区的区情,在“三为主一致力”方针和主导产业选择基准的基础上,论证将重加工组装工业中的装备制造业和高新技术产业中的新兴产业提升为开发区二次创业阶段的两大主导产业,并细化到具体小行业,从而突出开发区有别于其它开发区的产业特色,同时分析预测开发区产业结构中长期演变趋势,最后针对性地提出扶持开发区二次创业阶段主导产业成长的九项对策建议。     

从“人才强国”战略到“人才战略的思考强企”

"人才强国"战略,是我们党根据新世纪国际国内形势的变化,提出的一项重大战略决策.作为国民经济微观主体的广大企业来说,尤其是国有大中型企业来说,实施 "人才强企"战略在整个宏观经济战略层面中,具有非常重要的地位.要创新机制和体制促"人才强企"战略,巩固国有企业在国有经济的基础地位作用.     

中、美两国在20世纪50～70年代中学课程改革的比较研究

中美两国在 2 0世纪的 5 0～ 70年代间 ,对中学课程进行了频繁的改革 ,较集中的有三次 ,这些改革是第二次世界大战后很有代表性和特色的中学课程改革。分析研究中美两国这一时期课程改革的原因、理论依据、具体内容 ,在此基础上进行简要比较 ;总结两国课程改革的经验教训 ,可以清楚地看到 :中学课程的结构是随着社会发展和教育发展而不断变革的 ;课程改革与教育、社会的发展是互相作用的 ;课程改革是从教育实践中产生的一种适应人和社会发展的需要 ,有其自身的客观性基础。