百越古道民族关系及其对现代社会的影响

“百越古道”是岭南百越民族居住地区的一条古道,云集着壮、汉等20多个民族及其先民。他们之间的关系是这片疆土政治稳定和经济发展的社会基础。该文以百越古道交汇点横山寨为例,论述了百越古道民族关系中经济、政治、文化等方面内在因素以及民族关系对现代社会的深远影响。     

Examining the factor structure of the Family Child Care Environment Rating Scale—Revised

The purpose of this study was to examine the factor structure of the Family Child Care Environment Rating Scale—Revised (FCCERS-R) in high-stakes contexts. The results of an exploratory factor analysis revealed three dimensions of quality on the FCCERS-R: (1) Activities/Materials, (2) Language/Interaction, and (3) Organization. This study also explored whether abridged versions of the FCCERS-R could serve as a proxy for the full instrument. In addition to subsets of FCCERS-R items created from the factor structure, purposively and randomly chosen item subsets were created. The purposively chosen subsets included 6-, 9-, and 12-item scales comprised of the items with the highest factor loading across the three factors, whereas the randomly chosen subsets consisted of 12 items. Results of a discriminant analysis showed that the factor subsets were poorer proxies for the total FCCERS-R score than were the other subsets, which demonstrated comparable internal consistencies and discriminant power as the full FCCERS-R when classifying homes into general quality categories. Implications for adopting shorter versions of the FCCERS-R are discussed.     

Addressing the Lack of Measurement Invariance for the Measure of Acceptance of the Theory of Evolution

The Measure of Acceptance of the Theory of Evolution (MATE) was constructed to be a single-factor instrument that assesses an individual's overall acceptance of evolutionary theory. The MATE was validated and the scores resulting from the MATE were found to be reliable for the population of inservice high school biology teachers. However, many studies have utilized the MATE for different populations, such as university students enrolled in a biology or genetics course, high school students, and preservice teachers. This is problematic because the dimensionality and reliability of the MATE may not be consistent across populations. It is not uncommon in science education research to find examples where scales are applied to novel populations without proper assessment of the validity and reliability. In order to illustrate this issue, a case study is presented where the dimensionality of the MATE is evaluated for a population of non-science major preservice elementary teachers. With this objective in mind, factor analytic and item response models are fit to the observed data to provide evidence for or against a one-dimensional latent structure and to detect which items do not conform to the theoretical construct for this population. The results of this study call into question any findings and conclusions made using the MATE for a Hispanic population of preservice teachers and point out the error of assuming invariance across substantively different populations.     

Measuring the complexity of upper primary school children’s self-regulated learning: A multi-component approach

Balancing theoretical and practical issues in the measurement of SRL remains a challenge. This is especially the case for large-scale studies among primary school children’s SRL. In this respect, the present study describes the development and validation of the Children’s Perceived use of Self-Regulated Learning Inventory (CP-SRLI) consisting of nine components. A multistep process was used to develop the questionnaire, including reviews by a teacher and expert panel, cognitive interviews with upper primary school children, and a large-scale administration. The original 109-item questionnaire was then presented to 504 fifth and 463 sixth graders (sample 1). Subsequent to exploratory factor analyses on each component, the factor structure of each component was confirmed by confirmatory factor analyses using an independent second sample (409 fifth and 314 sixth graders), leading to a questionnaire of 75 items. Further, the factor structure of the different components is found to be invariant across boys and girls. The implications of the results and potential avenues for future research are presented and discussed.     

使用Q值提升技术的增益可调GSM低噪声放大器的设计

现代CMOS工艺的发展使得在CMOS工艺上设计射频IC前端成为可能。但在传统CMOS工艺集成的片上螺旋电感品质因数(Q)偏低,大大影响其性能。通过引入负电导实现螺旋电感Q值提升,并将其应用于共栅低噪声放大器的设计。     

广东各地市科技竞争力评价研究

用SPSS软件对广东省21个地市的8项主要科技竞争力指标进行因子分析,得出影响科技竞争力的5个关键因子,分别为科技效果因子,科技投入因子,经济基础因子。计算出各地区相应因子综合绩效的得分和排名,并对结果给出了相应的分析和评价。     

土地市场运行对经济增长的影响：作用机理与实证评价

本文基于一个城市土地市场运行对经济增长影响的理论框架,系统探讨和实证评价了中国土地市场运行对经济增长的作用机理和影响程度。研究结果指出,土地市场运行对经济增长的影响主要是通过经济要素投入与配置的改变展现出来的,包括土地一级市场运行对经济要素投入的规模扩张效应,土地二级市场运行对经济要素配置的结构优化效应,以及土地市场化程度发展对经济要素利用的经济激励效应。这三大效应在目前中国土地市场的运行过程中存在着明显的结构差异,其对经济增长的贡献率分别为5.07%、0.20%和2.65%,即规模扩张效应>经济激励效应>结构优化效应。因此,为更好地促进土地市场运行的经济增长作用效应的发挥,中国政府仍需采取必要的政策措施,以进一步完善土地市场结构和规范土地市场的运行。     

求最大公因式的矩阵变换法

求多项式的最大公因式教材中都是运用辗转相除法,运算的过程比较复杂。本介绍的矩阵变换法,使求解过程简洁明了,尤其对多于2个的多项式的最大公因式可一并求出,更显其优越性。     

影响我国城镇居民大众体育需求因素的分析

从定性和定量的角度出发,运用因子分析法,探索影响我国城镇居民大众体育需求的主要因素,并对这些影响因素进行了初步分析,在此基础上提出了启动我国当前大众体育需求的若干建议。     

影响健美操进入奥运会的项目自身因素分析

运用文献资料法、专家访谈法、问卷调查法、比较分析法对影响健美操进入奥运会的项目自身因素进行了分析研究,并针对性地提出了对策与建议。