基于主成分分析的山东省各地市创新能力评价

区域创新能力代表着一个地区聚集、整合以及推动持续创新的基本能力,在一定程度上可以用来衡量一个地区区域创新体系建设的情况.运用主成分分析法,利用2007年<山东省统计年鉴>中的相关指标和数据,详细分析了山东省17地市的区域创新能力发展水平,对结果进行评价,并提出相应的提升区域创新能力的对策.     

基于主成分分析法的普通高校大学生余暇体育限制因素研究

作为学校体育重要组成部分的余暇体育对于弥补体育课程教学不足,传承体育文化,掌握体育知识,增强学生体质,培养学生终身体育意识、能力和习惯,发展学生体育实践能力具有重要的作用。本文运用文献资料法、问卷调查法、数理统计法、逻辑分析法对普通高校大学生余暇体育限制因素进行调查研究和分析,并对普通高校大学生余暇体育发展对策进行了探讨。     

How to Improve Instructional Leadership: High School Principal Selection Process versus Evaluation Process

The selection process for a high school principal rather than the principal evaluation process should be the focus of efforts to improve instructional leadership in high schools.     

对我国当前腐败现象的分析与思考

腐败现象在当代中国的泛滥 ,已使改革的声誉严重受损。分析腐败现象产生的根源危害 ,向政治之癌宣战 ,是执政党在新的历史时期的一项紧迫任务     

When duties are not enough: principal leadership and public or private school management in Chile1

The Chilean education system is an emblematic case of school management privatization, with the majority of schools operating under government funding, but private administration. This article addresses the incidence of this dimension on school leadership, showing the differences and continuities established among primary school principals in the subsidized private and municipal sectors. The conclusion is that private school administrators do not recruit principals on a competitive basis, as a result of which these principals do not present a more developed professional profile, and that merely having more duties for executing the principal position – as happens in subsidized private schools – is not enough for an effective development of practices evidencing improved school leadership. These conclusions challenge the statement frequently expressed, but lacking sufficient empirical evidence, that the greater autonomy in school management encompassed by privatization will positively impact on school leadership and, therefore, on educational improvement.     

新时期未成年人道德观发展状况的实证研究

在连续4年(2006-2009年)对11712名未成年人的道德观发展现状调查的基础上进行分析认为,新时期未成年人的道德观发展呈积极、健康、向上状态,但未成年人的道德观发展存在不稳定性、不平衡性、矛盾性,社会应予以高度关注.     

Sensors Array Technique for Monitoring Aluminum Alloy Spot Welding

In this paper,the sensors array technique is applied to the quality detection of aluminum alloy spot welding.The sensors array has three forms,i.e.,linear magnetic sensors array,annular magnetic sensors array and cross magnetic sensors array.An algorithm based on principal component analysis is proposed to extract the signal eigenvalues.The three types of magnetic sensors array are used in the experiment of monitoring the signal.After the eigenvalues are extracted,they are used to build a relationship with ...     

Combining Principal Component Regression and Artificial Neural Network to Predict Chlorophyll-a Concentration of Yuqiao Reservoir’s Outflow

In order to investigate the eutrophication degree of Yuqiao Reservoir, a hybrid method, combining principal component regression (PCR) and artificial neural network (ANN), was adopted to predict chlorophyll-a concentration of Yuqiao Reservoir’s outflow. The data were obtained from two sampling sites, site 1 in the reservoir, and site 2 near the dam. Seven water variables, namely chlorophyll-a concentration of site 2 at time t and that of both sites 10 days before t, total phosphorus(TP), total nitrogen(TN), dissolved oxygen(DO), and temperature from January 2000 to September 2002, were utilized to develop models. To remove the collinearity between the variables, principal components extracted by principal component analysis were employed as predictors for models. The performance of models was assessed by the square of correlation coefficient, mean absolute error (MAE), root mean square error (RMSE) and average absolute relative error (AARE). Results show that the hybrid method has achieved more accurate prediction than PCR or ANN model. Finally, the three models were applied to predicting the chlorophyll-a concentration in 2003. The predictions of the hybrid method were found to be consistent with the observed values all year round, while the results of PCR and ANN models did not fit quite well from July to October.     

校长领导权力的二重性分析

伦理视野下校长领导权力的二重性包括价值性和工具。现实中,由于工具性遮蔽了价值性,致使领导权力的道义精神迷失。为此,应通过价值性规导工具性,以实现领导权力本真价值的回归。     

英国中小学资金管理原则与策略探究

英国中小学资金管理经历了由外部控制到自主抉择的发展过程.最优价值原则作为英国地方政府提供服务的基本原则,同样适用于中小学的资金管理.在遵循该原则的前提下,英国中小学管理者采取了一系列的资金管理策略.部分校外机构为学校资金管理提供了广泛的支持,同时也行使了对它们的监督.