RLC串联谐振特性的实验研究

RLC串联谐振电路实验中谐振特性的实验曲线与理论曲线总存在一定的误差,且谐振频率越高时,偏差越大.本文通过实验研究,分析了电感和电容串联总损耗电阻对谐振曲线及Q值的影响,利用实验所测得的电感和电容串联总损耗电阻对谐振曲线及Q值进行修正,发现修正后的理论结果与实验测量数据吻合得较好.     

关于国有资产管理的立法探讨

国有资产在我国政治、经济和社会生活中占有重要的地位,但目前,我国国有资产流失的现象十分严重。我国《物权法》在国有资产范围的界定、国有物权的行使、国有资产的保护等方面做出了明确规定,但要加强国有资产管理、防止国有资产流失,《国有资产管理法》的制定和实施同样有着重要的作用。     

旧住宅水压不稳定原因简析及改造方案

通过对某住宅生活给水水压不稳定原因进行分析，并参考《建筑给水排水设计规范GB50015—2003》及建筑给水排水工程相关知识，提出了解决方法，分析了水压不稳的原因，折射当前旧住宅给水设计存在的普遍问题。     

高铝质多孔陶瓷的研制及多孔衬底的制备

本课题是研究高铝质多孔陶瓷的制备工艺 ,并在此基础上研制多孔衬底的制备工艺。一方面 ,以铝矾土为骨料 ,以粘土为结合剂 ,采用泥浆浇注法研制陶瓷管 ;另一方面 ,以α-Al2 O3粉料挤压成型研制出多孔陶瓷片。     

多媒体数据压缩技术探析

随着互联网的普及,人们对信息的需求尤其是多媒体信息的需求日益增长。为保障大容量的多媒体数据在互联网上的有效传输,必须对多媒体数据进行压缩处理。利用有损压缩和无损压缩方法,对图像、音频、视频等多媒体数据进行压缩,形成联合图像专家组JPEG和运动图像专家组MPEG等常用压缩标准。     

The Effects of Personal and Social Uses of Mobile Health Applications on Healthy Behaviors

In the face of America’s obesity epidemic, mobile health applications (MHAs) offer solutions for motivating users to be healthier. MHAs include both personal features for the individual user (e.g., calorie tracking) and social features, which connect the user to others (e.g., for support or competition). The present study explores the connection between both personal and social uses of MHAs and healthy behaviors. Findings indicate that the use of MHAs is positively associated with healthier overall behaviors: Personal aspects were related to healthier eating and workout behaviors, and social aspects were positively associated with only healthier workout behaviors. Perceptions of social support from others predicted healthier overall behaviors and were related to increased body satisfaction. Implications for the role of social support in MHAs are discussed.     

Persuasive impact of loss and gain frames on intentions to exercise: A test of six moderators

The current study situated loss/gain-framing research in the extended parallel process model and tested whether two message features (dose, efficacy appeals) and four individual difference variables (walking self-efficacy, grit, consideration of future consequences, health information overload (HIO)) moderated the impact of message framing on intentions to engage in physical activity. Adults (N?=?341, M_age?=?38.09, SD?=?10.94) were randomly assigned to one of eight message conditions advocating exercise behavior. All four individual difference variables significantly moderated framing effects such that gain-framed messages were more effective for individuals with lower walking self-efficacy, grit, and consideration of future consequences and loss-framed messages were significantly more effective for individuals with higher walking self-efficacy, grit, consideration of future consequences, and for those with lower HIO.     

The Effects of Message Framing and Visual Image on Persuasion

This study examined the joint effects of message framing (gain vs. loss) and visual image (image vs. no image) on persuasion as it related to the use of dental floss and the use of sunscreen (N = 252). For both topics, the results revealed a Frame × Image interaction effect on fear. The interaction was such that the presence (vs. absence) of an image produced more fear in the loss-framed conditions. The corresponding results for gain-framed messages were inconsistent. Covariance analyses showed that fear mediated the effect of the interaction on persuasion, whereas dominant cognitive response did not.

[Supplementary materials are available for this article. Go to the publisher's online edition of Communication Quarterly for the following free supplemental resources: sunscreen and flossing messages of gain-visual and loss-visual.]