共查询到20条相似文献，搜索用时 171 毫秒
1.
2.
关于和谐社会评价指标体系与评价方法的探讨 总被引：2，自引：0，他引：2
构建和谐社会的成果可以从物质文明建设水平、政治文明建设水平、精神文明建设水平、社会文明建设水平和生态文明建设水平五个方面综合反映出来.围绕这五个方面,文章建立了由四个层次、50个指标构成的评价指标体系;提出了一套用层次分析法确定各指标的权重、用模糊隶属度函数方法对指标进行无量纲化处理、用线性加权和函数方法计算综合评价结果的对和谐社会构建程度综合评价的方法. 相似文献
3.
网络课程绩效评价指标体系的构建研究 总被引：14，自引：1，他引：14
网络教学传播活动中 ,教育信息主要依靠网络课程来储存和传递 ,教学质量很难监控。依据任务驱动式的绩效评价目标管理原则 ,结合网络课程的教学目标 ,采用德尔菲 (Delphi)评价指标获取法 ,逐步分解至具体可测的子目标群 ,从而获得网络课程绩效评价指标 ;再运用教育统计无量纲频率作为衡量权重分布特征的指标 ,进行实验统计处理 ,得出各指标相应的权重值 ;由此构建一套科学的网络课程绩效评价指标体系 ,用于提高网络课程教学质量 ,引导网络教学的正确发展方向 相似文献
4.
要进一步推动城乡一体化的实现,科学、合理地选取和构建测度城乡一体化水平的指标体系是必须解决的关键问题。国外关于城乡一体化的文献研究鲜有涉及评价指标体系的测度问题,同时,我国的城乡一体化是在长期城乡二元结构的背景下提出的,具有自身的特殊性,因此,本文主要对国内已有的文献研究做一个系统的梳理,综合现有研究文献并结合其评价指标体系的设计流程,从指标的选取、指标的无量纲化、指标权重的确定、综合评价方法或模型的选择进行探讨与分析。 相似文献
5.
企业技术创新能力评价指标体系和评价方法的确定 总被引：1，自引：0，他引：1
本文基于企业技术创新能力涵义、影响因素和评价指标体系设计原则,确定了由2个模块、7个要素、16个指标构成的企业技术创新能力评价指标体系,确定了指标权重、无量纲处理和综合评价的数学方法。 相似文献
6.
李佑莲 《福建工程学院学报》2009,7(4)
针对咨询企业信用评价指标的存在问题,运用模糊评判理论,建立了咨询企业等级的模糊评判模型;运用层次分析法确定各个指标的权重,对定量指标进行无量纲处理;改进了咨询企业信用等级评价指标,补充完善了<福建省工程造价咨询企业信用等级评定暂行办法>中的评价指标,使之更趋科学化.最后,以某甲级工程造价咨询企业为实例进行该评判模型操作演示. 相似文献
7.
8.
9.
吕益民 《淮南职业技术学院学报》2001,1(1):57-58
为完善采区设计中准备巷道布置方案的比较方法，在建立了评价项目的基础上，应用模糊数学理论，分别对定性、定量指标进行无量纲化综合评判和分析比较，然后进行多目标综合决策。 相似文献
10.
11.
研究目的：通过比较沉积物运移的不同标准,经选优得出更高精度的标准。创新要点：使用更少的参数和分情况来获得高精度的设计标准。研究方法：1.按状态将下水道中沉积物分成两类：没有沉淀的沉积物和沉淀的推移质;2.利用已有设计标准的方程,运用非线性回归和 MINITAB软件,得到不同情况下的最佳方程式;3.用实验所得的值对各方程预测值进行验证,比较各方程式的预测精度。 重要结论：1.本文提出的方程式可以预测不同情况下的沉积物运移;2.相比于其它标准,本文提出的方程式形式简单、所需参数少和参数估计简单,并且预测精度更高。 相似文献
12.
Linking item parameters to a base scale 总被引：1，自引：0，他引：1
This paper compares three methods of item calibration??concurrent calibration, separate calibration with linking, and fixed item parameter calibration??that are frequently used for linking item parameters to a base scale. Concurrent and separate calibrations were implemented using BILOG-MG. The Stocking and Lord in Appl Psychol Measure 7:201?C210, (1983) characteristic curve method of parameter linking was used in conjunction with separate calibration. The fixed item parameter calibration (FIPC) method was implemented using both BILOG-MG and PARSCALE because the method is carried out differently by the two programs. Both programs use multiple EM cycles, but BILOG-MG does not update the prior ability distribution during FIPC calibration, whereas PARSCALE updates the prior ability distribution multiple times. The methods were compared using simulations based on actual testing program data, and results were evaluated in terms of recovery of the underlying ability distributions, the item characteristic curves, and the test characteristic curves. Factors manipulated in the simulations were sample size, ability distributions, and numbers of common (or fixed) items. The results for concurrent calibration and separate calibration with linking were comparable, and both methods showed good recovery results for all conditions. Between the two fixed item parameter calibration procedures, only the appropriate use of PARSCALE consistently provided item parameter linking results similar to those of the other two methods. 相似文献
13.
Rafael Cortell 《浙江大学学报(A卷英文版)》2008,9(5):648-653
In this paper a numerical analysis is carried out to obtain the temperature distribution within a single fin. It is assumed that the heat transfer coefficient depends on the temperature. The complete highly non-linear problem is solved numerically and the variations of both, dimensionless surface temperature and dimensionless surface temperature gradient as well as heat transfer characteristics with the governing non-dimensional parameters of the problem are graphed and tabulated. 相似文献
14.
Hung‐Yu Huang 《Journal of Educational Measurement》2017,54(4):440-480
Cognitive diagnosis models (CDMs) have been developed to evaluate the mastery status of individuals with respect to a set of defined attributes or skills that are measured through testing. When individuals are repeatedly administered a cognitive diagnosis test, a new class of multilevel CDMs is required to assess the changes in their attributes and simultaneously estimate the model parameters from the different measurements. In this study, the most general CDM of the generalized deterministic input, noisy “and” gate (G‐DINA) model was extended to a multilevel higher order CDM by embedding a multilevel structure into higher order latent traits. A series of simulations based on diverse factors was conducted to assess the quality of the parameter estimation. The results demonstrate that the model parameters can be recovered fairly well and attribute mastery can be precisely estimated if the sample size is large and the test is sufficiently long. The range of the location parameters had opposing effects on the recovery of the item and person parameters. Ignoring the multilevel structure in the data by fitting a single‐level G‐DINA model decreased the attribute classification accuracy and the precision of latent trait estimation. The number of measurement occasions had a substantial impact on latent trait estimation. Satisfactory model and person parameter recoveries could be achieved even when assumptions of the measurement invariance of the model parameters over time were violated. A longitudinal basic ability assessment is outlined to demonstrate the application of the new models. 相似文献
15.
Logistic模型中参数估计及其模拟研究 总被引：2，自引：0，他引：2
本文在文献[1]提出Logistic模型参数近似估计的基础上,根据被试能力参数的不同情况得到两参数和三参数模型的参数估计新方法,新方法的特点是计算简单而不失精度,蒙特卡洛模拟表明新方法是一种快速而有效的算法。 相似文献
16.
SAR运动参数估计是SAR成像技术研究中的一项关键技术,目前国际上普遍采用的方法是GPS INS导航系统进行运动参数估计。国内由于技术等方面的原因导航参数的估计精度远远不能满足SAR成像要求,目前只能从回波中提取平台运动参数,其中较为典型的方法是PGA、子孔径相关法等,而DCFT作为一种新的CHIRP信号参数估计方法能快速、精确的估计CHIRP信号的相关参数。本文提出利用DCFT方法估计SAR运动参数,并以此为基础对传统的RD成像算法加以改进,提出了一种基于DCFT变换的改进RD成像算法。 相似文献
17.
Investigation on the automatic parameters extraction of pulse signals based on wavelet transform 总被引：1，自引：0，他引：1
WANG Hui-yan ZHANG Pei-yong 《浙江大学学报(A卷英文版)》2007,8(8):1283-1289
This paper analyses a key problem in the quantification of pulse diagnosis. Due to the subjectivity and fuzziness of pulse diagnosis,quantitative methods are needed. To extract the parameters of pulse signals,the prerequisite is to detect the corners of pulse signals correctly. Up to now,the pulse parameters are mostly acquired by marking the pulse corners manually,which is an obstacle to modernize pulse diagnosis. Therefore,a new automatic parameters extraction approach for pulse signals using wavelet transform is presented. The results testified that the method we proposed is feasible and effective and can detect corners of pulse signals accurately,which can be expected to facilitate the modernization of pulse diagnosis. 相似文献
18.
Frances K. McSweeney 《Learning & behavior》1978,6(4):444-450
Four pigeons pecked keys and pressed treadles for food reinforcers delivered by several variable-interval schedules of reinforcement. Then the subjects responded on several concurrent schedules. Keypecking produced reinforcers in one component, and treadle-pressing produced reinforcers in the other. The changeover delay, which prevented reinforcement after all switches from one response to the other, was 0, 5, or 20 sec long. An equation proposed by Kerrnstein (1970) described the rates of treadle-pressing and keypecking emitted during the variable-interval schedules. The k parameter of this equation was larger for keypecking than for treadle-pressing. The R0 parameters were not systematically different for the two responses. The rates of keypecking and treadle-pressing emitted during the components of the concurrent schedules correlated with, but were not equal to, the rates of responding predicted by Herrnstein’s equation and the subject’s simple schedule responding. The ratios of the rates of responding emitted during, and the ratios of the time spent responding on, the components of the concurrent schedules conformed to an equation proposed by Baum (1974), but not to Herrnstein’s equation. 相似文献
19.
贾卫红 《郧阳师范高等专科学校学报》2009,29(6):41-43
讨论了一个新的单参数混沌系统的反馈同步问题,基于Lvapunov稳定性理论,当系统参数已知和未知时,分别给出了多个简便且容易实现的控制器,另外,当控制参数值增加时,比较了同步的速度．最后仿真结果表明了该方法的有效性． 相似文献
20.
对机器人柔性变形误差模型的建模进行了研究,分别建立了机器人运动学参数辨识模型、关节柔性参数辨识模型以及连杆柔性参数辨识模型,并在此基础上推导出运动学参数与柔性参数的耦合误差模型。结果显示,对于在进行运动学参数辨识时有必要考虑机器人柔性变形的影响,本研究可为进行柔性参数的辨识以及运动学参数的辨识提供参考。 相似文献