CrossRef's Text and Data Mining Services

CrossRef ( http://www.crossref.org/ ) is an association of scholarly publishers that develops shared infrastructure to support more effective scholarly communications. In May 2014, CrossRef launched CrossRef Text and Data Mining Services for its members. This article covers the thinking behind CrossRef launching this service, and the particular problems it aims to address around the collection of full‐text content for the purposes of text and data mining (TDM). It explains the technical aspects of the service for researchers and lets publishers know what they need to provide to CrossRef in order to participate and how to do so. It will also describe the pilot of CrossRef's TDM Services, and information on publisher uptake since the launch and how this can be measured, and the costs for joining or using the service.     

Searching ClinicalTrials.gov and the International Clinical Trials Registry Platform to inform systematic reviews: what are the optimal search approaches?

Background:

Since 2005, International Committee of Medical Journal Editors (ICMJE) member journals have required that clinical trials be registered in publicly available trials registers before they are considered for publication.

Objectives:

The research explores whether it is adequate, when searching to inform systematic reviews, to search for relevant clinical trials using only public trials registers and to identify the optimal search approaches in trials registers.

Methods:

A search was conducted in ClinicalTrials.gov and the International Clinical Trials Registry Platform (ICTRP) for research studies that had been included in eight systematic reviews. Four search approaches (highly sensitive, sensitive, precise, and highly precise) were performed using the basic and advanced interfaces in both resources.

Results:

On average, 84% of studies were not listed in either resource. The largest number of included studies was retrieved in ClinicalTrials.gov and ICTRP when a sensitive search approach was used in the basic interface. The use of the advanced interface maintained or improved sensitivity in 16 of 19 strategies for Clinicaltrials.gov and 8 of 18 for ICTRP. No single search approach was sensitive enough to identify all studies included in the 6 reviews.

Conclusions:

Trials registers cannot yet be relied upon as the sole means to locate trials for systematic reviews. Trials registers lag behind the major bibliographic databases in terms of their search interfaces.

Implications:

For systematic reviews, trials registers and major bibliographic databases should be searched. Trials registers should be searched using sensitive approaches, and both the registers consulted in this study should be searched.Clinical trials registers such as ClinicalTrials.gov and portals to trials registers such as the World Health Organization (WHO) International Clinical Trials Registry Platform (ICTRP) are increasingly used to identify ongoing or completed clinical trials. These resources offer important information on the methods and progress of trials likely to be of interest to a range of users, including researchers, clinicians, and patients. The extent to which these resources can be relied upon as a sole source of trials for inclusion in systematic reviews, including Cochrane systematic reviews (CSRs), is the subject of the research study reported here. This study also investigates the most efficient ways that librarians, information professionals, and other searchers can search these resources. Search efficiency was investigated by evaluating the overlap and unique yield of searches in the two resources and by testing four search approaches. The tested search approaches ranged from the very precise (single specific condition search term combined with a single specific intervention search term) to the very sensitive (at least two interventions terms).     

University presidents as policy entrepreneurs: Evidence from U.S. universities engaged in prestige behaviour

This article examines how university presidents who led their institutions to achieve Carnegie “R1 Highest Research Activity” managed policy tensions created by prestige priorities and worked with groups and coalitions internally and externally. Striving to achieve R1 status requires U.S. universities to re-calibrate their focus, resources, and messaging both internally and externally. Using four elements of policy entrepreneurship (PE), the three cases included in this article illustrate the critical role of university presidents as PE in maintaining a sustained effort over an extended period. University leaders displayed their social acuity and built teams by cultivating their social and political capital with influential constituents and groups. As PE, university presidents were deliberate and thoughtful about the language they used to define and describe policy problems and solutions. The findings expand our understanding of the role of university presidents as PE.     

Determinants and patterns of physical activity practice among Spanish university students

The purpose of the present study was to investigate the socio-demographic and lifestyle determinants of physical activity practice, as well as the motivations for being or not being physically active in Spanish university students. A representative sample of students from a Spanish university (n = 2,051; 42.1% males; mean age 21.9, s = 4.8 years) participated in the present cross-sectional study. A questionnaire including questions regarding lifestyle, dietary habits, parents' characteristics, and physical activity habits was administered to the students. The socio-demographic and lifestyle determinants of physical activity practice were assessed using multivariable logistic regression. 68.4% of men and 48.4% of women reported to practise physical activity in the present sample. Those who practised physical activity consumed more fruits and were less likely to be smokers compared to non-physically active students. Also, physically inactive men spent more time in front of the computer and physically inactive women spent more time in front of the TV and were more likely to be frequent alcohol consumers. Maternal educational level and maternal physical activity habits were also important determinants of physical activity practice among men and women respectively. In conclusion, physically active students tended to engage in other healthy habits in the present population, suggesting the clustering of healthy or unhealthy lifestyle factors among specific subgroups.     

African American students’ college choice processes in a post 209 era

Abstract

High-achieving African American students in California are not attending University of California (UC) campuses. Due to hyper-implementations of Proposition 209, which limited UC campuses’ ability to use race as a significant admission criteria, the UC system and individual UC campus policies have scaled back their efforts to recruit high-achieving African American students from California. This article presents findings from the qualitative portion (n?=?74) of a convergent mixed-method study of over 700 African American college-going students. Findings convey the critical role that access, outreach, diversity, and climate plays in the college choice process of African American high achievers. Drawing upon higher education and critical race literature, the findings further reveal the challenges and opportunities for states and elite universities in retaining its brightest students from diverse backgrounds. This research also conveys the potential of research to inform state, systemic, and institutional policies to increase access to selective public universities.     

Preschool policy and bilingual education in the United States

In 1976, Head Start introduced a “Strategy for Spanish-Speaking Children.” The strategy provided support in four areas of activity, which included: (1) Basic and applied research on the developmental progress of Spanish-speaking children; (2) Regional Resource Centers intended to provide access to bilingual/bicultural materials and assistance in their implementation; (3) Head Start staff training; and (4) Curriculum model development in two languages, permitting individualized instruction in either language, and incorporating multicultural resources that facilitate cognitive and social growth.The most significant outcome of the strategy for the Spanish-speaking has been the curriculum development effort and its accompanying evaluation. The remainder of this paper will describe the curriculum development effort, th evaluation results, and some policy implications for national efforts in bilingual education.     

Developing Digital Privacy: Children's Moral Judgments Concerning Mobile GPS Devices

New technology poses new moral problems for children to consider. We examined whether children deem object tracking with a mobile GPS device to be a property right. In three experiments, 329 children (4–10 years) and adults were asked whether it is acceptable to track the location of either one's own or another person's possessions using a mobile GPS device. Young children, like adults, viewed object tracking as relatively more acceptable for owners than nonowners. However, whereas adults expressed negative evaluations of someone tracking another person's possessions, young children expressed positive evaluations of this behavior. These divergent moral judgments of digital tracking at different ages have profound implications for how concepts of digital privacy develop and for the digital security of children.     

Caring Behavior in Children of Clinically Depressed and Well Mothers

Young children's sensitivity and responsiveness to mothers' needs were investigated under conditions of high and low parenting risk (depressed and nondepressed mothers, SADS-L). Child characteristics of gender, affect, and impulse control problems and the mother-child attachment relationship were examined as they related to children's caring actions. Children's caring behavior was observed in an experimental situation in which their mothers simulated sadness and in a naturalistic setting. Attachment alone and child's problems alone were not predictors, and maternal diagnosis alone was not a strong predictor. Girls were significantly more caring than boys. Severe maternal depression was necessary to bring out high levels of responding in boys. Highest frequencies of caring were from children with severely depressed mothers, problems of affect regulation, and secure attachment. The importance of recognizing interacting influences and diverse underlying processes in the development of children's caring behavior is discussed.     

Children Persist Less When Adults Take Over

Children need to learn to persist through challenges, yet adults sometimes step in to solve problems for them. Here, we looked at how adult taking over related to children’s persistence. In an observational study (N = 34, ages 4–8), we found that parents who took over more often during a challenging puzzle task rated their children as dispositionally less persistent. To establish whether taking over can cause reduced persistence, we ran two preregistered experiments (N = 150, ages 4–5). Children assigned to a taking over condition persisted less on a subsequent task compared to those in a teaching or a baseline condition. Reframing the context did not ameliorate the negative impact of taking over. The results suggest that taking over impairs children’s persistence.