Science Letters： Analytical solutions for a uniformly loaded circular plate with clamped edges

A bi-harmonic potential function was constructed in this study. Love solution was employed to obtain analytical solutions of uniformly loaded plates with two different types of clamped edges. The treatment of clamped boundary conditions was the same as that adopted by Timoshenko and Goodier （1970）. The analytical solution for the first type of clamped boundary condition is identical with that obtained by Luo et al.（2004）, and the solutions for both types were compared with the FEM results and the calculations of thin plate theory.     

新时期大学生思想政治工作面临的挑战及其思考

高等学校学生思想政治工作是高等教育的重要内容之一.受国际、国内政治的影响,知识经济时代的到来和素质教育的全方位推进,对高校学生思想政治工作提出了新的要求.本文就此对新时期大学生思想政治工作的思路和方法进行了探讨.     

How user comments affect news processing and reality perception: Activation and refutation of regional prejudice

An experiment (N?=?177) examined how user-generated comments on a crime news article, which attribute the reported crime to the local residents’ predispositions, affect individuals’ processing of the news and their reality perception. Participants who viewed the regionalism-invoking comments estimated the crime rates of the featured region to be higher than those exposed to regionalism-irrelevant or regionalism-counterbalancing comments, and such effects were more pronounced for those with a stronger regional self-identity. Moreover, those who read regionalism-related comments, either regionalism-invoking or regionalism-counterbalancing, (a) recalled better the locations featured in the focal and the subsequent, yet unrelated, news articles and (b) attributed greater responsibility to news media coverage for the persistence of regionalism, as compared to those who viewed regionalism-irrelevant comments.     

Benefits of naturalistic methods in research in science education

The author argues that naturalistic (e.g., qualitative, ethnographic) research is appropriate for studying science education. Field methods such as indepth interviewing and observation are used, and the logic of the inquiry is inductive rather than hypothetico-deductive. The stages of naturalistic research are explained and illustrated with material from the NSF-sponsored Case Studies in Science Education. Problems in traditional research methods (construct validity, ecological generalization) are presented as justification for inductive models or models based on multiple methods, perspectives, and operations.