牙科坐椅倾仰角度调节对病人舒适性影响的综合研究

通过研究牙科坐椅的倾仰角度变化对人体肌电影响及背部压力分布的影响,为牙科医生手术过程中权衡牙科手术需要与病人舒适性提供有力的参考依据.根据牙科医生建议,针对10个实验对象,采用MP150多导电生理记录仪测试不同倾仰角度下人的表面肌电,采用BPMS5315O体压测试系统,测试不同倾仰角度下人体背部压力分布及人体舒适性的主观评价,并对所得肌电指标、压力分布指标采用编程软件Matlab 7.1和统计分析软件SPSS 18.0进行数据处理.获得了积分肌电值(IEMG)、靠背压力变化规律,确定了基于表面肌电及体压分布综合地判断牙科手术中病人舒适性的指标,并得到牙科手术中病人最舒适的座椅倾仰角度为50°(±5°).     

按摩模式对按摩椅气压按摩效应的实验研究

目的测试受试者在连续式、间断式和组合式三类模式下按摩前后的舒适性及按摩感受性,比较分析按摩模式对按摩椅气压按摩效应的影响。方法采用主观感受7级模拟量表测试16名受试者按摩前后小腿部位的主观感受。结果按摩后,舒适度会略有降低;受试者小腿的胀感变化最为明显,其次是酸感、热感和麻感;组合式按摩模式的按摩效应最为显著。结论气压按摩压力是按摩模式的重要影响因素。可以用胀感、酸感和麻感来衡量气压按摩效应。间断式按摩模式的短暂间歇对于气压按摩效应具有一定影响。组合式按摩模式不同压力组合的特性使延长按摩时间成为可能,以增强按摩效应。     

Review of Take control of your drinking? and you may not need to quit.

Reviews the book, Take control of your drinking? and you may not need to quit by Michael S. Levy (see record 2007-12140-000). This book is a self-help book explicitly designed for drinkers in the general population. It is written in a conversational, second-person style, and throughout the conversation, Levy encourages readers to be honest with themselves about how alcohol fits into their lives. In return, he adopts a nonjudgmental mentoring role throughout the text. As suggested by the title, Levy's approach includes options for reducing alcohol consumption (moderation) or quitting alcohol use altogether. Although allowing that moderation is a legitimate goal for treatment and/or self-help is still quite controversial in some quarters, the effectiveness of adopting this option for some drinkers is supported by research, some of which is cited in the notes that accompany each chapter. I suspect that the even-handed way that moderation or abstinence goals are treated in the book, along with its plain-spoken writing style and awareness that alcohol problems often exist in a context of other mental health issues, will appeal to any drinker who is curious about their own alcohol use and whether to reduce or quit drinking. Those who choose to engage with the material in the book will be using techniques that are, in general, well-supported by intervention research with problem drinkers. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

基于AVR微控制器的ADC按键设计技巧

利用ATMEL公司的Atmega168微处理器,采用AD转换方式来实现按摩椅控制器的键盘接口,通过在硬件电路中巧妙地选择电阻,在软件设计中采用数字滤波、二分法和区间鉴定等方法,灵敏可靠地实现了按摩椅中30个按键的处理。文中重点给出了硬件设计电路和软件设计思想以及部分汇编代码。     

Factors influencing the perceived usability of wearable chair exoskeleton with market segmentation: A structural equation modeling and K-Means Clustering approach

The sudden implementation of work-from-home setup has caused the rise of sedentary position among employees which led to an increase in development or worsening of musculoskeletal disorders. To help mitigate this problem, wearable assistive devices such as wearable chairs have been argued to be beneficial. Several studies have expounded on the benefit of using this, however little to no available device is yet present in the Philippines. To which, businesses and developers could capitalize on this aspect. This study examined the perceived usability of wearable chair exoskeleton in the Philippines by integrating the Unified Theory of Acceptance and Use of Technology (UTAUT2) and System Usability Scale (SUS). A questionnaire was developed and distributed to 365 residents in the Philippines to measure the factors and their relationship to perceived usability accurately. Indicators and measures used in the questionnaire were derived from existing literature on technology acceptance and usability evaluation. Partial least squares structural equation modeling (PLS-SEM) was used for this study. Results revealed that perceived usability was significantly influenced by usage behavior. At the same time, habit, hedonic motivation, and performance expectancy significantly influenced the behavioral intention of the wearable chair exoskeleton. K-Means clustering was also utilized to identify clusters of target users of the wearable chair in the country, such as high-value customers, core customers, and low-value customers. Results indicated that demographic factors such as females, 30 years old and below, earning Php45,000 and above monthly, and living in a city are highly likely to utilize the product. The findings of this study can be applied and extended as a theoretical framework for future researchers of consumer behavior and exoskeleton developers for enhancing the innovation and usability of this new technology. This study may also be used and capitalized by investors to strategize the development and marketing of the exoskeletons among industrial and teleworkers worldwide.     

现代椅子设计中材料工艺的嬗变

以现代椅子设计的发展为线索,讨论木材、金属、塑料、复合材料等工业化材料及其工艺运用于椅子设计制造的过程与变迁,并结合工业设计发端以来各阶段的典型案例,分析每一个历史时期特定的材料工艺得以规模应用的原因,论述了在现代椅子设计和材料工艺之间,存在显性关联的历史线索,并指出当前材料工艺以加速度多方向发展,椅子设计也同样呈现明显的多元化趋势。     

Use of self-help materials for anxiety and depression in mental health services: A national survey of psychologists in Norway.

[Correction Notice: An erratum for this article was reported in Vol 42(3) of Professional Psychology: Research and Practice (see record 2011-11548-002). The author's affiliations were listed incorrectly. The correct affiliations are in the correction.] How do psychologists in clinical practice perceive and use self-help materials for clients with anxiety and depression? The use of self-help materials with guidance from a therapist has been suggested as a way of meeting the increasing need for mental health services. The present study investigated factors relevant to the use of self-help materials for the treatment of anxiety and depression among psychologists employed in mental health services. Among 1863 eligible clinical psychologists in Norway, 815 (43.7%) participated in a national survey. A total of 93.5% of the participants had recommended self-help materials to clients, and approximately half (55.1%) had received requests from their clients regarding self-help materials. Self-help materials were recommended as an adjunct and not as an alternative to therapist contact by 73.0% of respondents, by 16.6% for relapse prevention, and by 1.2% to clients on a waiting list. Internet/computer-based programs were recommended by 2.2% of the participants. The practitioner's previous use of self-help materials to enhance his or her therapy skills and knowledge of self-help materials was related to use of self-help materials with clients. Psychologists working in child mental health services recommended self-help less often than those working in adult services. These results have implications for future efforts to disseminate effective self-help materials through increased attention toward self-help interventions in training and clinical practice. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

两足步行椅机器人机械参数与步行稳定性关系研究

研究了两足步行椅机器人的机械参数对步行ZMP（Zero Moment Point）稳定裕度的影响．采用稳定的参数化步态，在步态不变的情况下，改变机器人各连杆的质量、转动惯量和质心位置，分析其对ZMP稳定裕度的影响．通过仿真实验得到以下结论：合理选择大腿、小腿和上身的机械参数可以显著增加步行ZMP稳定裕度，从而降低伺服控制的难度．     

基于C51单片机的校园自助导览仪设计

在分析MP3标准算法的基础上,基于C51单片机实现MP3的编解码,并对MP3编码进行了多方面的优化;在单片机上的MP3算法中加入无线功能,设计成为一种校园自助导览仪.经野外测试,效果良好.     

图解法及其在古典家具图示中的应用研究

对古典家具的研究依赖于从图片资料进行实物反求。介绍了应用于古典家具设计中的线条法、视图法等图解方法，根据古典家具的特点对视线迹点透视图解法在古典家具图示中的应用进行深入研究，分析在已知透视条件下反求原物尺寸的方法，并给出应用实例。结果表明，该方法可以弥补其它方法的不足之处，从而对古典家具的结构进行定量分析。