大学为学生提供了什么样的信息技术经历：现状及效果的探析--基于南京大学与首尔大学的问卷调查

大学生的信息技术经历是其大学就读经历中的一个重要组成部分,分析大学生信息技术经历的现状及其对学业结果的促进效果,是探究本科教育质量的重要路径。通过对中国南京大学和韩国首尔大学的问卷调查,课题组发现,南京大学样本的信息技术经历的性别差异、家庭背景差异、生源地差异、年级差异、学科差异等都非常显著,首尔大学样本除了在年级和学科等因素上存在个别指标（即信息技术使用状况）的差异之外,在其他所有背景因素上都不存在显著的差异性。回归分析则表明,中韩本科生的“信息技术使用状况”和“信息技术使用的积极意向”都会对各种学术性学习结果产生显著的正向影响,但“信息技术使用的消极意向”均不会对各种学术性学习结果产生显著的负向影响。在定量分析和定性访谈的基础上,课题组认为,关注对弱势群体学生的信息技术使用经历、意向和能力的支持和帮助;关注对教师信息技术能力的提升;改革刚性的教学评价制度,发挥信息技术真正支持教学的潜力;将学生的信息技术能力（特别是学术信息的搜集、整理和交流能力）纳入到培养目标和考评体系中来等四个方面,是改进本科生信息技术经历、提升学生学习结果的重要实践策略。     

Can weekly discussions in a sensory science course influence student's perception and confidence in their professional success skills?

The Institute of Food Technologists’ (IFT) success skills highlight the importance of developing professional skills in the food science curriculum. On the other hand, many students in higher education report that the public school system feels disconnected and unrelated to their future. In this context, this study aimed to evaluate student's perceived importance of professional skills, as well as to enhance their awareness and confidence in them. Students in a sensory science class at the University of Illinois completed a questionnaire at the beginning, middle, and end of the semester to assess their opinion of and self‐assurance in professional skills, such as writing technical reports, providing leadership, making formal presentations, and applying critical thinking. During the semester, students received basic training and guidelines on each skill and were given assignments and activities to practice them as part of their coursework. Results showed increased knowledge about the existence of IFT core competencies, as well as an increased motivation to practice success skills regularly. They also showed an increased perceived importance of presentation skills, leadership, dealing with group conflict, researching scientific information, and library resources. Confidence in 80% of the skills increased significantly by the end of the semester, after students had been presented with opportunities to practice and discuss the skills in groups. Students were also able to relate their learning of specific success skills to different course assignments. This study concluded that a general exposure to the importance of practicing professional skills in a college setting enhanced student's experiences and awareness by connecting them to their future professional careers.     

Evidentiary Competence: Sixth Graders'' Understanding for Gathering and Interpreting Evidence in Scientific Investigations

With the growing emphasis on the development of scientific inquiry skills, there is a strong need for more research on students' ability to collect and interpret evidence. This paper calls attention to the notion of evidentiary competence that refers to the concepts and reasoning skills involved in the collection, organization, and interpretation of data. We proposed a set of concepts and skills involved in evidentiary competence and examined sixth of them—the priority, relevancy, objectivity, replicability of evidence, and the interpretation of examples and tables—using a written instrument contextualized in atmospheric science. Analyses of 40 sixth grade students' answers and explanations revealed that their understanding of scientific evidence and the data collection process was quite weak in several respects. For example, many students neither appreciated the role of empirical evidence in scientific inquiry, nor distinguished relevant evidence from irrelevant evidence, nor understood the importance of reliable and objective observations, nor interpreted examples and tables appropriately. Results suggest that more explicit instructions are needed in order to strengthen students' ability to collect and interpret data, especially in the current data rich information age.     

Beginning to untangle the strange coupling of power within a neoliberal early education context

Policymakers across the globe continue to promote access to early education programmes as a means to improve children's readiness for school. Many of their reforms are rooted in a neoliberal conception of governance that frames policy solutions through economic rather than democratic terms. Such policies foster an image of the successful learner as one who becomes an earner and consumer rather than an active member of the larger democratic society. This shift in the conception of publicly supported early education affects teachers of young children in multiple ways. This article examines how a sample of early educators in the USA responded to a set of neoliberal reforms in their pre-kindergarten teaching context. Examining their responses, which ultimately mimicked their policy-makers’ neoliberal reforms, reveals the subtlety of these policies in overtaking their attempts to resist them. It also illuminates the challenges they and other early educators face as policy-makers’ neoliberal policies continue to alter the purpose and direction of early childhood. Finally, it ends by considering the ways in which early educators working in similar contexts might respond to and navigate such reforms.     

Design of mixed H2-dissipative observers with stochastic resilience for discrete-time nonlinear systems

A linear matrix inequality based mixed H₂-dissipative type state observer design approach is presented for smooth discrete time nonlinear systems with finite energy disturbances. This observer is designed to maintain H₂ type estimation error performance together with either H_∞ or a passivity type disturbance reduction performance in case of randomly varying perturbations in its gain. A linear matrix inequality is used at each time instant to find the time-varying gain of the observer. Simulation studies are included to explore the performance in comparison to the extended Kalman filter and a previously proposed constant gain observer counterpart.     

Using a Wiki in a Scientist-Teacher Professional Learning Community: Impact on Teacher Perception Changes

In this study, a wiki was integrated into a professional development model that systemically addresses early-career teachers?? needs. This study was conducted to examine the impact of wiki-based professional development activities in a scientist-teacher professional learning community and focused on early-career teachers?? perceptions of the role of wiki technology and knowledge of teaching through inquiry. Teachers participated in the Professional Learning Community Model for Entry into Teaching Science (PLC-METS), a professional development program that is based on an integrated teacher education model of knowledge sharing, collaboration, and communication between teachers and scientists, with the goal of supporting early-career teachers?? ability to engage their students in scientific inquiry. The use of a wiki environment to collaborate on activities, deliver resources, and share knowledge is rapidly expanding in professional development communities. The use of the wiki in PLC-METS positively predicted the results of teachers?? knowledge of inquiry-based teaching. Results demonstrate that the wiki can contribute to building a learning community for collaboration between early-career science teachers and scientists. The paper also discusses the educational implications for the design of wiki-based professional learning communities that impact teachers?? professional development.     

Relationships between cognitive diagnosis, CTT, and IRT indices: an empirical investigation

Cognitive diagnosis models (CDMs) continue to generate interest among researchers and practitioners because they can provide diagnostic information relevant to classroom instruction and student learning. However, its modeling component has outpaced its complementary component??test construction. Thus, most applications of cognitive diagnosis modeling involve retrofitting of CDMs to assessments constructed using classical test theory (CTT) or item response theory (IRT). This study explores the relationship between item statistics used in the CTT, IRT, and CDM frameworks using such an assessment, specifically a large-scale mathematics assessment. Furthermore, by highlighting differences between tests with varying levels of diagnosticity using a measure of item discrimination from a CDM approach, this study empirically uncovers some important CTT and IRT item characteristics. These results can be used to formulate practical guidelines in using IRT- or CTT-constructed assessments for cognitive diagnosis purposes.     

“The kids are terrific: It’s the job that’s tough”: The ELL teacher role in an urban context

The present study depicts an ecological portrait of the work lives of 16 ELL high school teachers in an urban context in the United States. Results suggest that their work lives take place within a complex school ecology which affects the kinds of activities they engage in and the opportunities they have to support their students. In this context they demonstrate an unusual dedication to aiding students and their families in activities related to the transition to a new country. The paper concludes with recommendations for future research explicating further the school ecology of this group of teachers.