CANopen验证——如何让你的设备按照既定设计运行

随着CANopen的重要性与日俱增，促进了对CiA开发和生产的CANopen一致性测试工具（Conformance Test Tool）的需求。     

Academic performance,course completion rates,and student perception of the quality and frequency of interaction in a virtual high school

This study examined the relationship between students’ perceptions of teacher–student interaction and academic performance at an asynchronous, self-paced, statewide virtual high school. Academic performance was measured by grade awarded and course completion. There were 2269 students who responded to an 18-item survey designed to measure student perceptions on the quality and frequency of teacher–student interaction. Quality of interaction was subdivided into three constructs representing feedback, procedural, and social interaction. A confirmatory factor analysis helped to establish the fit of the statistical model for teacher–student interaction. Hierarchical logistical regression indicates that an increase in the quality and frequency of interaction resulted in an increased likelihood of course completion but had minimal influence on grade awarded. The estimated effect for quality and frequency composite items on completion was .83 and .56 respectively. Low practical significance of student–teacher interaction on grade awarded may be the result of mastery-based teaching approaches that skew grades for the completers toward the high end.     

Changing classrooms bring new questions: environmental influences,self-efficacy,and academic achievement

Learning Environments Research - In recent years, considerable attention has been given to how the physical structure of active learning classrooms affects academic performance, but little is known...     

Mother-child bookreading in low-income families: correlates and outcomes during the first three years of life

About half of 2,581 low-income mothers reported reading daily to their children. At 14 months, the odds of reading daily increased by the child being firstborn or female. At 24 and 36 months, these odds increased by maternal verbal ability or education and by the child being firstborn or of Early Head Start status. White mothers read more than did Hispanic or African American mothers. For English-speaking children, concurrent reading was associated with vocabulary and comprehension at 14 months, and with vocabulary and cognitive development at 24 months. A pattern of daily reading over the 3 data points for English-speaking children and daily reading at any 1 data point for Spanish-speaking children predicted children's language and cognition at 36 months. Path analyses suggest reciprocal and snowballing relations between maternal bookreading and children's vocabulary.     

Taking Children Seriously

One of the timeless messages of early childhood education is to treat children with respect and value their unique perspectives on the world. This editorial tells the stories of three young children who wanted to be helpful and accept responsibility. It also tells the story of three professionals who identified with the child and responded supportively.     

Gender Composition of Editors and Editorial Boards in Seven Top Criminal Justice and Criminology Journals from 1985 to 2017

This paper examines the gender composition of editors and editorial board members of seven top criminal justice and criminology (CCJ) journals from 1985 through 2017. The findings indicate that women have historically been, and continue to be, underrepresented in these positions. From 1985 through 2017, women comprised 14% of all Editors-in-Chief, 27% of all Associate Editors, and 22% of all Editorial Board members. While there was a period during the early 2000s when Justice Quarterly and Criminology achieved gender parity in representation across all of the editorial roles, this equality was short lived. The other journals have never achieved gender parity, and, on average, women have comprised 3.8% to 35.2% of the editorial positions at each of the journals. The implications of this imbalance for women’s scholarship and professional success are discussed, and recommendations for changes to CCJ journal policies and practices to ensure more equity are provided.     

Exploring data management content in doctoral nursing handbooks

Objective:While data management (DM) is an increasing responsibility of doctorally prepared nurses, little is understood about how DM education and expectations are reflected within student handbooks. The purpose of this study was to assess the inclusion of DM content within doctoral nursing student handbooks.Methods:A list of 346 doctoral programs was obtained from the American Association of Colleges of Nursing (AACN). Program websites were searched to locate program handbooks, which were downloaded for analysis. A textual review of 261 handbooks from 215 institutions was conducted to determine whether DM was mentioned and, if so, where the DM content was located. Statistical analysis was performed to compare the presence of DM guidance by type of institution, Carnegie Classification, and the type of doctoral program handbook.Results:A total of 1,382 codes were identified across data life cycle stages, most commonly in the handbooks’ project requirements section. The most frequent mention of DM was in relation to collecting and analyzing data; the least frequent related to publishing and sharing data and preservation. Significant differences in the frequency and location of codes were identified by program type and Carnegie Classification.Conclusions:Nursing doctoral program handbooks primarily address collecting and analyzing data during student projects. Findings suggest limited education about, and inclusion of, DM life cycle content, especially within DNP programs. Collaboration between nursing faculty and librarians and nursing and library professional organizations is needed to advance the adoption of DM best practices for preparing students in their future roles as clinicians and scholars.