A Comparison of Item Fit Statistics for Mixed IRT Models     

Kyong Hee Chon  Won-Chan Lee  Stephen B. Dunbar 《Journal of Educational Measurement》2010,47(3):318-338

In this study we examined procedures for assessing model-data fit of item response theory (IRT) models for mixed format data. The model fit indices used in this study include PARSCALE's G² , Orlando and Thissen's S − X² and S − G² , and Stone's χ²* and G²* . To investigate the relative performance of the fit statistics at the item level, we conducted two simulation studies: Type I error and power studies. We evaluated the performance of the item fit indices for various conditions of test length, sample size, and IRT models. Among the competing measures, the summed score-based indices S − X² and S − G² were found to be the sensible and efficient choice for assessing model fit for mixed format data. These indices performed well, particularly with short tests. The pseudo-observed score indices, χ²* and G²* , showed inflated Type I error rates in some simulation conditions. Consistent with the findings of current literature, the PARSCALE's G² index was rarely useful, although it provided reasonable results for long tests.  相似文献   

电子创新开放实验室建设的探索研究   总被引：1，自引：0，他引：1  

瓮嘉民  周成虎 《实验技术与管理》2012,29(2):33-35

电子创新开放实验室以培养大学生参加电子设计大赛为平台,以培养电子创新开发人才为目的,对其建设意义、建设内容和建设方法进行了探索和研究.  相似文献   

太原终身学习网数字化资源的再建设与推广     

弓亚斌  郭建勇  渠佳敏 《山西广播电视大学学报》2012,(4):15-17

数字化资源是推进全民学习、终身学习的基础,资源的完善与丰富直接影响市民的学习兴趣、学习内容以及学习效果。太原终身学习网新平台初步建成,试运行中,资源的形式和内容呈现出一些薄弱环节,不能很好满足市民多样化的学习需求,为此,资源需要在内容和形式上不断完善,力求更加丰富、立体、动态,并在资源建设基本定型的基础上,采取有效手段和方法,做好资源向基层延伸、服务全市市民的具体推广工作。  相似文献   

电路分析课程实验教学改革与实践     

李欣茂  姚敏  黄家敏  王焕友  黄小益 《湘南学院学报》2012,(2):79-82

通过对已有实验项目进行综合性和设计性改进,开发新的实验项目,改进课程衔接,对电路分析课程实验教学的内容进行了大幅度调整.通过严格执行实验教学规范,改进实验考核方式,利用网络资源,开展分层次教学,改进了实验教学方法.通过改进实验内容设计,建设开放式实验室,鼓励学生开展研究型和探索型实验,有效地培养了学生的实践动手能力.这些措施有效地改进了实验教学效果,提高了实验教学质量,为通过省级示范性实践教学中心评估打下了坚实的基础.  相似文献   

旅游发展对贫困地区城乡收入差距的非线性影响     

史舒悦  汪侠  海少琪  万清云  胡佳敏 《资源科学》2022,44(11):2341-2355

研究旅游发展水平对贫困地区城乡收入差距的影响,对于协调区域发展、促进社会公平具有重要意义。本文以西南地区国家级贫困县为研究对象,基于统计年鉴和统计公报数据,运用门槛回归模型探究2010—2018年旅游发展水平对贫困县城乡收入差距的影响。结果表明：①在研究期内,旅游发展水平提高能够显著缩小贫困县城乡收入差距,但其缩减作用存在单重门槛效应。随着旅游发展水平不断提高,旅游对城乡收入差距的正向影响会显著减弱。②在旅游发展早期阶段,旅游发展水平提高对农村居民人均收入的增收效应优于城镇居民,但旅游发展到一定程度后,旅游发展水平提高对于城镇居民人均收入的增收效应更加明显。③地方财政、地区教育水平和金融发展水平是调节西南地区旅游发展水平与城乡收入差距关系的重要因素。在西南地区内部,各省（市）旅游发展水平对城乡收入差距的作用及其影响因素存在地区异质性。地方财政、产业结构、经济发展水平分别是影响重庆、云南、四川旅游发展水平与城乡收入差距关系的主要因素,而四川旅游发展水平与城乡收入差距的关系受经济发展水平、产业结构、地方财政等多因素综合影响。  相似文献   

Korean Year 3 Children’s Environmental Literacy: A prerequisite for a Korean environmental education curriculum     

Hye‐Eun Chu  Eun Ah Lee  Hee Ryung Ko  Dong Hee Shin  Moon Nam Lee  Byeong Mee Min 《International Journal of Science Education》2013,35(6):731-746

The purpose of this study was to investigate Korean children’s environmental literacy levels and the variables that affect their environmental literacy. An instrument, the Environment Literacy Instrument for Korean Children (ELIKC), was developed that measures four different dimensions (knowledge, attitude, behaviour, and skills) using 69 items and 13 demographic variables. The ELIKC was administered to 969 Year 3 students from large cities, medium‐sized cities, and rural areas. The students were given 80 min to answer the questions. Statistical analysis was performed on each of the scales that make up the ELIKC and a multivariate analysis of variance was performed to identify the variables that affect environmental literacy. Results indicate that the correlation between attitude and behaviour is the strongest while that between knowledge and behaviour is the weakest. Also, it was found that gender, parents’ school background, and the source from where students obtain environmental information affect all categories of environmental literacy.  相似文献   

Cultural Differences in the Role of Perceived Descriptive Norms in Behavioral Intentions     

Hee Sun Park  Soe Yoon Choi  Hanna Joo 《Communication Research Reports》2013,30(1):14-22

  相似文献   

Functions of Social Gatherings Involving Alcohol Consumption with Coworkers in Korea     

Dong Wook Lee  Hee Sun Park  Tai Sik Lee  Mi Kyoung Kim  Young Hyun Kim 《亚洲交流杂志》2013,23(3):266-285

Focusing on alcohol-involved social gatherings (i.e. drinking parties), the current study examined the reasons for and outcomes of joining drinking parties and evaluations of them. In studies 1 and 2, Korean workers (n=87) employed in the civil engineering industry and undergraduates (n=103) from various engineering majors provided desirable and undesirable reasons for and outcomes of joining drinking parties with their colleagues (coworkers for working adults and school friends for undergraduates). In studies 3 and 4, Korean workers (n=102) and undergraduates (n=89) evaluated each of the outcomes as either social, personal, or both. In study 5, Korean workers (n=108) and undergraduates (n=111) evaluated how good or bad each outcome type would be. Findings showed that among the five types of the drinking party participation outcomes, the conversation category and the work-/school-life category were the ones for which working adults and undergraduates had similar evaluations. For the group, the hierarchical relationship, and the drinking categories, however, working adults and undergraduates had different evaluations. These and other findings are presented in detail, and the implications thereof are discussed.  相似文献   

中韩惯用语对比研究     

金真姬 《首都师范大学学报(社会科学版)》2010,(4)

惯用语是一种很有特色的语言形式,在各民族语言中占有很重要的地位,是语言研究的一个重要课题.中韩惯用语在结构形式、表意特点、来源等方面,既有共同之处,又有不同的地方.在学习过程中,如何区别它们的异同,是一个难点.本文旨在通过中韩两国惯用语的对比研究,找出它们各自的特点及其体现的两国文化和思维方式的异同,以加深人们对中韩惯用语的认识.  相似文献   

The determinants of private tutoring participation and attendant expenditures in Korea   总被引：2，自引：0，他引：2  

Jin Hwa Jung  Kyung Hee Lee 《Asia Pacific Education Review》2010,11(2):159-168

With the growing worldwide prevalence of private tutoring, the causes and effects of private tutoring have been drawing increasing attention both academically and policy wise. This study intends to draw policy implications by investigating the determinants of private tutoring participation of school-aged children and expenditures per child for such private tutoring. The logistic regression (for participation), OLS, and F.E. panel models (for expenditures) were adopted for the analysis, using the Korean panel data. The empirical findings indicate that private tutoring for children—both in terms of participation and expenditures—has a positive correlation with the mother’s educational attainment (preference effect), a negative correlation with the mother’s employment status (time constraint effect), and a positive correlation with the household income (income effect).  相似文献