Identification of highly-cited papers using topic-model-based and bibliometric features: the consideration of keyword popularity

The number of received citations have been used as an indicator of the impact of academic publications. Developing tools to find papers that have the potential to become highly-cited has recently attracted increasing scientific attention. Topics of concern by scholars may change over time in accordance with research trends, resulting in changes in received citations. Author-defined keywords, title and abstract provide valuable information about a research article. This study performs a latent Dirichlet allocation technique to extract topics and keywords from articles; five keyword popularity (KP) features are defined as indicators of emerging trends of articles. Binary classification models are utilized to predict papers that were highly-cited or less highly-cited by a number of supervised learning techniques. We empirically compare KP features of articles with other commonly used journal-related and author-related features proposed in previous studies. The results show that, with KP features, the prediction models are more effective than those with journal and/or author features, especially in the management information system discipline.     

《东方辩证法》一书的新发现

文章从<易经>的时间、作者、三进制再发现的意义等十一个方面简要介绍了<东方辩证法>一书的新发现.17世纪德国科学家莱布尼茨最早发现了易经中的二进制,该书则揭示了三进制与二进制关系之谜:加上0为三进制,去掉0即二进制.牛顿用计算证明了万有引力,该书作者张今也是通过计算发现了周文王<系辞传><说卦>中的运算规律.     

Improving outcomes for babies and toddlers in child welfare: A model for infant mental health intervention and collaboration

Children under three comprise a sizable and growing proportion of foster care placements. Very young children who enter the child welfare system experience disruptions of critical attachments that are essential to this formative stage of brain development, as well as other traumatic events, leaving them at great risk for lifelong impairments. To reverse these concerning outcomes, babies who have been removed from their homes require intensive, relationship-based interventions that promote secure attachment to a primary caregiver and holistic attention the child's developmental needs. Child welfare decision-makers must be informed of infant brain development and knowledgeable about the particular needs and circumstances of each child. This article describes a model with these features that has been developed and tested in the Bronx, New York, one of the nation's poorest urban counties with high rates of foster care. The Project utilizes evidence-based Child-Parent Psychotherapy (CPP) as its core intervention, and emphasizes collaboration and information sharing– driven by the CPP clinician– with judges, child welfare workers, attorneys and other social service and mental health providers, thereby encouraging developmentally and relationally informed case planning and permanency decisions. The model is evaluated using pre and post treatment psychosocial measures and program outcome data. Results indicate improvement in parenting interactions, positive child welfare outcomes (including increased rates of reunification, fewer returns to foster care), and improved safety and wellbeing. Results highlight the need for child welfare practices to be more closely aligned with the current science of infant brain development, and to incorporate a specialized approach to address the unique needs of infants.     

Measuring the Impact of Professional Accreditation on Student Experiences and Learning Outcomes

This research uses a conceptual model to examine the influence of a change in accreditation standards on a representative national sample of 203 engineering programs at 40 institutions. Based on data collected from more than 140 program chairs, 1,200 faculty, 4,300 graduates of 2004, and 5,400 graduates of 1994, the study investigates the differential impact of the change in accreditation standards on programs reviewed in different years during the period of transition. Despite significant variation across most of the measures and groups in 1994 (before the introduction of the new accreditation criteria), the 2004 evidence demonstrates a surprisingly uniform level of student experiences and outcomes. These findings suggest that engineering accreditation is beginning to accomplish its quality assurance goals. This is a revised version of a research paper presented at the meeting of the Association for Institutional Research, May 17, 2006, Chicago, IL.     

德国职业教育对中国职业教育改革的启示

德国的教育,特别是职业教育是德国经济跻身世界前列的重要原因。德国高等职业教育在教学模式、教学理念、专业设置、校企合作等方面独具特色,对我国发展高等职业教育,创新人才培养模式具有重要的借鉴意义。     

Measuring Parent Receptivity Towards the Classroom Environment Using a Rasch Measurement Model

This study investigated parent-reported receptivity towards the classroom environment and classroom outcomes. Classroom environment was based on a five-aspect model: (1) provision of information from the child; (2) beliefs about the school; (3) provision of information from teachers; (4) teachers' commitment to working with parents; and (5) confidence in communicating with teachers. Classroom outcomes were based on two aspects: (1) educational values (importance of schooling, involved with learning; seeing a future through learning, desire to learn, and importance of learning); and (2) learning outcomes (achieving, and views of child's engagement in school work). For each aspect, items were written in an ordered-by-difficulty pattern so that, for example, Item 2 involved Item 1 and ‘more’, making it conceptually ‘harder’ to agree with Item 2 than with Item 1. There were four Likert response categories (SDA, DA, A, and SA). Using the extended logistic model of Rasch, an interval-level, unidimensional scale was created with item difficulties for classroom environment aspects and classroom outcomes calibrated on the same scale as the receptivity measures. The sample consisted of 518 parents of students from three secondary schools in Western Australia. The item sample was 30. The proportion of observed variance considered true was 0.94. The items for each aspect were found to be ordered from ‘easy’ to ‘hard’ in line with the hypothesised model of receptivity and the data fitted the measurement model well. This revised version was published online in July 2006 with corrections to the Cover Date.     

Assessing Outcomes: Practical Methods and Evidence

University counseling center clients’ (N = 52) perceptions of precounseling functioning were highly correlated with their actual well‐being scores at intake. The magnitude of change based on perceptions of precounseling functioning to current well‐being was approximately double of what is found from the difference of actual precounseling well‐being to current well‐being scores. Retrospective methods for assessing precounseling functioning are best suited for comparison among clients or counseling processes.     

三元等价关系

研究了三元等价关系与二元等价关系的联系,给出它们之间等价性的两个定理。     

关于数学归纳法变化类型的两个注记

讨论了用数学归纳法原理对类型为P(A,B)和P(A,B,C)的命题作出证明时,应当具有的基本形式。