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为引进信息搜寻行为量表并分析该量表的信度、效度,评估其在中国大学生中的适用性,随机选取200名医学专业大学生进行包括30个题项的信息搜寻行为量表的测试,其中20名学生两周后进行了重测。结果显示信息搜寻行为量表的Cronbach’s alphα系数为0.872,分半信度为0.835,重测信度为0.876;各分量表的信度均在可接受的范围内,信度指标良好;各题项与量表总分的相关性显著,各分量表之间及其与总量表之间均呈显著相关,该量表的内容效度与结构效度良好。研究表明,此量表具有良好的测量学指标,可以作为中国大学生信息搜寻能力研究的有效测量工具。 相似文献
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Mehri Shahbazi Abdolhossein Farajpahlou Farideh Osareh Alireza Rahimi 《Library & information science research》2019,41(1):78-84
A credible scale based on the opinions of system users was developed to evaluate and assess data quality in automated library systems (ALS). Development and testing were carried out in two stages. In the first stage, 77 dimensions for data quality which had been previously identified through a systematic literature review were used to develop scale items. The first draft of the scale was then distributed among a target population of ALS experts to solicit their opinions on the scale and the items. In the second stage, a revised version of the scale was distributed among the main study population, which included end users of the target systems. This stage used factor analysis to determine the final draft of the scale, which consists of 4 factors and 62 items. The 4 factors were named after the qualities of their associated items: Data Content Quality, Data Organizational Quality, Data Presentation Quality, and Data Usage Quality. This scale can help system managers identify and resolve potential problems in the systems they manage and can also aid in evaluating the quality of data sources based on the opinions of end users. 相似文献
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《Communication methods and measures》2013,7(3):241-255
Cultivation theory, and the study of long-term media effects in general, could benefit from the development of a scale that measures long-term television exposure levels. Theory and research into the organization, storage, and retrieval of long-term memory are used to develop a scale for measuring past and present television exposure levels. In a survey of 207 young adults, a Lifetime Television Exposure (LTE) scale is submitted to tests of criterion validity. Findings show the scale positively predicts cultivation outcomes above and beyond existing measures of current television exposure. Television viewing during early childhood, in particular, predicts young adults' current social reality beliefs. Methodological considerations and directions for future research are discussed. 相似文献
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移动社交媒体环境下用户错失焦虑症(FoMO)量表构建研究 总被引：2，自引：2，他引：0
[目的/意义] 鉴于移动社交媒体环境下用户错失焦虑症（Fear of Missing Out,FoMO）已经逐渐成为一种普遍存在的现象,为了更好地测度用户在使用移动社交媒体过程中的FoMO程度,本研究尝试在中文情境下开发FoMO的有效度量工具。[方法/过程] 以现有相关研究文献为基础,结合用户访谈构建移动社交媒体环境下FoMO初步测度问卷,综合采用专家咨询、探索性因子分析（EFA）和验证性因子分析（CFA）方法进行量表开发。[结果/结论] 最终构建一个包含心理动机、认知动机、行为表现和情感依赖四个维度的移动社交媒体环境下用户FoMO测量量表,具体涉及16个相应指标。数据分析表明,该量表信度和效度较好,可为后期针对移动社交媒体采纳和持续参与的影响因素探索提供工具参考和理论指导。 相似文献
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对中国学术数字信息资源市场中数据库服务商的垄断行为进行博弈分析,并对市场监管部门及不同规模服务商提出发展建议。通过模型分析发现：由于不同信息资源需求的不均匀性,买断少量高需求资源可以提升企业效益,不过垄断进行到一定程度就会停止,且先行动者获益更明显;规模小的服务商有更大动力买断数字信息资源,规模大的服务商的报复行动对规模小的服务商的效益影响不大,所以规模小的服务商具有很大的意愿买断信息资源;允许各服务商保有一定量独占资源,鼓励深度挖掘及提供个性化服务是形成市场良性竞争的有效途径。 相似文献
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《The Journal of Academic Librarianship》2023,49(1):102623
The main aim of this paper is to evaluate the validity of a translated version the Information Literacy Self-Efficacy (ILSE) scale in a different socio-cultural context in Bangladesh. The 28-items of the ILSE scale was translated into Bangla to collect data from students of a public university in Bangladesh. To determine the underlying factor structures of the 28-items scale and its short version of 17-items, exploratory factor analyses (EFAs) were conducted with a sample of 394 students. Confirmatory factor analyses (CFAs) were performed with a group of undergraduate students (n = 267) to examine the validity of the scale. The 28-items and 17-items versions of the scale extracted four factors and three factors, respectively. In the CFA analyses, 23 out of the 28-items were found reliable although discriminant validity was not achieved between two constructs. While analyzing the 17-items subscale, 13-items were found to be reliable. Overall, the CFA model fit statistics for both the 23-items and 13-items support the use of the translated version of the ILSE scale for assessing self-efficacy for information literacy among Bangla-speaking population. 相似文献
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STABILITY OF SCALE QUALITY UNDER VARIOUS DATA COLLECTION PROCEDURES: A MODE COMPARISON ON THE 'DE JONG-GIERVELD LONELINESS SCALE 总被引：1，自引：0，他引：1
Data collection procedures can influence respondents' self-disclosure,accuracy and motivation to complete the interview. In comparingresearch results across different studies, it is important touse robust measuring instruments. The ‘De Jong-GierveldLoneliness Scale’ was developed to measure lonelinessamong different populations and in studies with different designs.Data on this loneliness scale were re-analyzed to investigatethe robustness of the scale. The data were from six Dutch surveys.Different interview modes were used for data collection: threesurveys with self-administered paper questionnaires, two surveyswith face-to-face interviews, and one telephone survey. In orderto compare the properties of the loneliness scale, a relativelyhomogeneous category of respondents was selected: single womenbetween the ages of 25 and 65. An examination of the scale withregard to five aspects of robustness showed in very few casesthat it was affected. No evidence was found for the assumptionthat the use of a self-administered questionnaire would leadto high item non-response, any higher than using other datacollection procedures. It was also assumed that in self-administeredquestionnaires or telephone interviews, a better inter-itemhomogeneity and a better person scalability would be found instudies with face-to-face interviews. The results sustainedthis hypothesis. Further, it was believed that the absence ofan interviewer would result in greater self-disclosure and thereforein higher scale means. We found on evidence to support this.In general the results showed that the loneliness scale metthe psychometric requirements of items non-response, scale homogenityand person scalability. After testing the robustness of thescale, we conclude that it is questionable on two aspects: theinter-item homogeneity and the person scalability. 相似文献
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In its original presentation, scores on two of the three subscales of the Classroom Citizenship Behavior scale were highly reliable. Scores on the subscale measuring the third dimension of classroom citizenship behavior, Courtesy, had poor reliability. We inductively derived additional items for the Courtesy subscale and tested structure and reliability of the revised scale. Exploratory factor analysis indicated that the scale readily divided into three factors of six items each, consistent with the proposed model. Furthermore, the subscale scores associated with these factors demonstrated high reliability. Next, two additional communication classes completed the revised scale and confirmatory factor analyses were run on the new version of the three-factor scale. Fit indices were good. The revised Classroom Citizenship Behaviors scale provides a stronger tool for investigating student behaviors that contribute to the effective functioning of the classroom environment. 相似文献
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Validity of the verbal immediacy scale 总被引：1，自引：0，他引：1
The development and use of the verbal immediacy scale (Gorham, 1988) are outlined and discussed. Data are presented which bring into question the validity of the measure. It is concluded that the scale may not be a valid operationalization of the immediacy construct as outlined by Mehrabian (1971) and, even if it is, it generates a response set such that the meaning of the responses obtained is unknown. The scale is not recommended for continued use in communication research prior to its reformulation and additional testing for validity. 相似文献
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大学生健康信息规避量表构建研究 总被引：1，自引：1，他引：0
[目的/意义] 构建稳健而实用的大学生健康信息规避（HIA）量表,以期为有效测度大学生HIA倾向及HIA相关研究提供前期基础,并为健康服务机构和大学生群体合理应对HIA提供有益参考与借鉴。[方法/过程] 采用选择性暴露理论和前期调研,开发大学生HIA初步量表;利用初步量表对277名大学生进行施测,对获取的实证数据进行探索性因子分析和验证性因子分析,通过信效度检验后形成大学生HIA正式量表。[结果/结论] 大学生HIA具有负面情绪、认知冲突和行为改变的三重结构,总量表重测信度为0.951,3个维度的重测信度在0.871-0.919,具体涉及10个测量项目。 相似文献
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社交网络用户参与动机的测量 总被引：3，自引：1，他引：2
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Regarding evaluation of individual researchers, the bibliometric indicators approach has been increasingly discussed recently, but there are some problems involved with it: construct definition, measurement errors, level of scale, dimensionality, normalization. Based on a psychometric model, the Rasch model, we developed a measuring scale for the theoretical construct ‘researcher’s performance capacity,’ defined as the competency of a researcher to write influential papers. The aim was a scale that is one-dimensional and continuous, is applicable to bibliometric count variables, and takes measurement errors into account. In this paper we present the psychometric model (Bayesian Poisson Rasch model, BPR) and its assumptions and examine the behavior of the model under various sampling conditions. For a sample of N?=?254 researchers in a quantitative methodology section of an undisclosed German academic society for social sciences, using the BPR model we developed a scale that we named ‘Bibliometric Quotient’ (BQ, M?=?100, SD?=?15) (following the term ‘intelligence quotient’). The scale fulfills most of the test-theoretical requirements (e.g., high reliability αt?=?.96, no differential item functioning except for academic age and German states) and in addition allows researchers to be ranked. Women’s BQ scores were 8.3 points lower on the scale than men’s BQ scores. 相似文献
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Scale and Translation Invariant Collaborative Filtering Systems 总被引：1，自引：0，他引：1
Daniel Lemire 《Information Retrieval》2005,8(1):129-150
Collaborative filtering systems are prediction algorithms over sparse data sets of user preferences. We modify a wide range of state-of-the-art collaborative filtering systems to make them scale and translation invariant and generally improve their accuracy without increasing their computational cost. Using the EachMovie and the Jester data sets, we show that learning-free constant time scale and translation invariant schemes outperforms other learning-free constant time schemes by at least 3% and perform as well as expensive memory-based schemes (within 4%). Over the Jester data set, we show that a scale and translation invariant Eigentaste algorithm outperforms Eigentaste 2.0 by 20%. These results suggest that scale and translation invariance is a desirable property. 相似文献
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分析中国图书出版产业规模状况以及图书出版单位扩张规模的市场行为特征,利用前10家图书出版单位的相关数据分析2004--2006年图书出版产业总收益的影响因子,发现资产规模对总收益的影响明显,但是通过对收益规模弹性系数的分析,发现图书出版产业规模经济性不强. 相似文献
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[目的/意义] 量表的开发是将高校图书馆管理制度有效性研究由质化发展到量化的重要途径,也是检验高校图书馆管理制度有效性理论的有效步骤。[方法/过程] 根据量表设计的原则与一般步骤,通过对问项测试进行项目分析,经过筛选与优化最终设计出由4个维度16个问项组成的高校图书馆管理制度有效性测量量表,在此基础上对量表进行验证性因子分析,分别检验量表的构念效度检验、汇聚效度和区分效度,然后引入图书馆管理沟通效果和沟通环境作为效标变量,分别检验量表的增加效度和法则效度。[结果/结论] 研究表明量表的构念效度、汇聚效度、区分效度、增加效度和法则效度均通过检验。 相似文献
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[目的/意义]为了有效测度大学生用户的移动社交媒体错失焦虑症（FoMO）程度及为FoMO相关研究提供前期基础，设计出稳健而实用的FoMO测量量表。[方法/过程]通过对大学生进行深度访谈获取原始资料，在利用扎根理论编码提取FoMO关键特征的基础上编制FoMO初步量表；利用初步量表在大学生中施测获取样本数据，通过信效度检验对初步量表进行优化形成正式量表；通过聚类分析确定FoMO程度类别，并基于实测数据进行判别分析确定特定用户的FoMO程度。[结果/结论]开发出由情境特征、行为特征、结果特征和心理特征4个维度30个项目构成的FoMO正式量表，形成相对稳定的FoMO程度类别，在3所高校抽取105名大学生进行FoMO程度实测。 相似文献