Wearable activity trackers and health awareness: Nursing implications

Purpose:Wearable devices are commonly used to measure physical activity.However,it remains unclear the effect of wearing these devices on health awareness.Our aim was to provide evidence related to wearing physical activity trackers and health awareness.Methods:A quantitative comparison study design was used comparing participants who wore physical activity tracking devices(n=108)and those who did not(n=112).A paper-based Physical Health Knowledge survey designed for the purpose of this research was used for data collection in 2018.Results:A difference between participants who wore physical activity tracking devices and those that did not was identified in relation to activity levels and physical health awareness.Wearable devices are suggested as an opportunity for nurses to engage people in physical activity with the potential to improve their health awareness.Conclusions:Nurses are well placed in the healthcare landscape to work with patients who own an activity tracker device concerning increasing activity self-monitoring.This information the patient has from the device can also form the basis of health discussions between nurses and the people in their care.

Economic Analysis and Environmental Impacts of a Hybrid PV System in Arid Climate Considering Different Types of Solar Trackers

This paper presents a study aimed at evaluating and comparing the performance of six different tracking systems for photovoltaic (PV) with diesel-battery hybrid system in arid climate of Kingdom of Saudi Arabia (KSA). The study considered various technical and economic factors including system net present cost (NPC), levelized cost of energy (LCOE), and PV power generation using energy analysis and microgrid design software “HOMER”. It also presents an overview of the current electricity production and demand in the Kingdom. The weather data used in this study have been collected from the new solar atlas launched by King Abdullah City for Atomic and Renewable Energy (KACARE). The selected solar resource monitoring station for this study is located near to Riyadh city and has an annual average daily total irradiation of 6300 W/m2/day. The study shows that, for stand-alone PV system in the vicinity of Riyadh city, tracking system is economically better than fixed angle system. Among the considered tracking systems, VCA system is the most preferable as it has low NPC and LCOE values with a high return on investment (ROI) as well as low carbon dioxide (CO2) emissions due to a high renewable energy penetration.

Effect and feasibility of wearable physical activity trackers and pedometers for increasing physical activity and improving health outcomes in cancer survivors:A systematic review and meta-analysis

Purpose:This systematic review and meta-analysis aimed to evaluate the effect of wearable devices for improving physical activity and healthrelated outcomes in cancer survivors.Methods:CINAHL,Cochrane,Ebscohost,MEDLINE,Pubmed,ProQuest Health and Medical Complete,ProQuest Nursing and Allied Health Source,ScienceDirect,and SPORTDiscus databases were searched for randomized controlled trials published before September 1,2020,that evaluated interventions involving wearable devices in cancer survivors.Standardized mean differences(SMDs)were calculated to assess effects on physical activity and health-related outcomes.Subgroup analyses were conducted to assess whether the effects differed by interventions and cancer characteristics.Risk of bias was assessed using the Cochrane risk of bias tool.Results:Thirty-five trials were included(breast cancer,n=15,43%).Intervention durations ranged between 4 weeks and 1 year.Most trials(n=25,71%)involved pedometer-based physical activity interventions.Seven(20%)involved Fitbit-based interventions,and 3(9%)involved other wearable physical activity trackers(e.g.,Polar,Garmin).Compared to usual care,wearable devices had moderate-to-large effects(SMD range 0.54-0.87,p<0.001)on moderate-intensity physical activity,moderate-to-vigorous-intensity physical activity,total physical activity,and daily steps.Compared to usual care,those in the intervention had higher quality of life,aerobic fitness,physical function,and reduced fatigue(SMD range=0.18-0.66,all p<0.05).Conclusion:Wearable physical activity trackers and pedometers are effective tools that increase physical activity and improve health-related outcomes in individuals with cancer.Identifying how these devices can be implemented for longer-term use with other intervention components remains an area for future research.

Comparison of Solar Trackers and Application of a Sensor Less Dual Axis Solar Tracker

In the 21th century, one of the biggest problems that the world faces is energy provision. Today, the way that most countries use for energy production is not clean and continuous. The most obvious proof for that is the change in the climate. The amount of CO2 （carbon dioxide） that is caused by fossil fuel burning increases day by day and this situation creates the greenhouse effect and change in the climate. The sun is one of the best solutions to this problem. It is not only clean and continuous, but also available anywhere, anytime. However, the efficiency of a photovoltaic system is directly related to the amount of solar energy acquired by the system which means that, it is necessary to follow the sun to have a high efficient system. There are two types of trackers that follow the sun and there are several ways to build them. In this paper, solar tracker designs are examined and a new dual axis solar tracker design is given.

PASCO-Tracker实验系统的搭建及其对热机效率的测量

为使热机p-V图线的测量和由图线计算热机效率的整体过程可成为大学物理实验中易于操作的一部分,笔者首先搭建了PASCO-Tracker实验系统,然后在两种高温热源温度下,通过该系统分别实践了热机工作中p-t、V-t关系图线的测量,并在此基础上得到了p-V图线,在拟合出p-V关系函数后,通过原理公式的计算得到了热机效率与高温热源温度及气缸内装入的钢丝质量间的关系。测量结果表明,压强、体积的周期均随钢丝质量的增加而减小,效率随钢丝质量的增加而增加,二者具有非线性关系。热机效率随高温热源温度的增加而增加。本实验系统可用于演示热机工作过程的实时监控和热机效率的测量与计算。

基于Tracker软件的传统物理实验教学优化——以“自由落体运动”实验为例

以“自由落体运动”实验教学设计为例,将打点计时器与Tracker软件进行对比,在传统物理实验的基础上,运用Tracker软件对物理实验教学的不足之处进行优化,以提高物理实验教学质量.

Tracker软件助力物理模型建构教学——以“全反射”为例

物理模型建构教学被认为是培养学生科学思维的关键环节之一,而现代信息技术可作为该环节的一大助力。在新课标、新课改提倡信息化教学的理念下,以“全反射”为例,将Tracker软件应用于物理模型建构的教学过程,分析了Tracker软件的应用原则。以问题链为导向,以真实情境为驱动,借助自制创新教具等手段,组织了一系列Tracker实验探究活动,为有效地将信息技术软件应用于物理模型建构的教学实践提供了参考。

建立合理模型 优化教学设计——以单摆教学为例

培养学生的物理模型建构能力是物理学科核心素养中的一个重要要求.有效利用信息技术手段设计“单摆”的模型建构教学过程,可以弥补传统课堂教学对于培养学生建模能力的局限性,为物理建模教学提供新的思路.

基于Tracker软件分析附加质量对磁机械振荡器振动特性的影响

悬臂梁由于结构简单而广泛应用在各类工程结构中,端部带附加质量的弹簧片悬臂梁在永磁体相互激励下的振动模型,称为磁机械振荡器。本文利用Tracker软件,且根据欧拉-伯努利梁的振动理论分析弹簧片悬臂梁端部附加质量对振动特性的影响,包括对振动位移和振动频率相对于附加质量影响的研究。实验及分析结果表明,随着附加质量的增大弹簧片的振动幅度变大,而振动频率降低。本论文的研究有利于为传感器或能量资源采集提供新思想,为器件应用提供更加的优化设计。

对比三种单摆实验测量工具并利用Tracker软件探究锥摆运动

单摆测量重力加速度是大学物理实验中的一项基本内容,也是测量重力加速度的一种常规方法,实验中通常使用智能手机、多功能计时器、Tracker软件三种测量工具进行周期测量,利用固定单摆摆长直接计算和改变单摆摆长使用最小二乘法间接计算两种测量方法,对三种测量工具的精度进行了对比。实验结果表明,三种测量工具的精度由高到低依次是:Tracker软件、多功能计时器、智能手机。实验中,单摆周期往往受圆锥摆运动的影响而产生误差,使用Tracker软件分析得出:单摆做圆锥摆运动将导致所测重力加速度偏小。

基于Tracker的方位径向摆影响因素实验研究

为探究方位径向摆运动的影响因素,使用影像追踪软件Tracker分析径向摆运动轨迹,控制多个变量,得到不同条件下摆球运动图像,计算得到转化时间.通过分析图像,发现方位径向摆的运动受到方位角的大小、弹性杆直径、弹性杆长度、径向摆摆长等多因素影响.

信息技术辅助物理建模教学——以“平抛运动”教学为例

物理建模教学通过培养学生的高阶思维能力和实验探究能力,促进学生物理学科核心素养的达成。以平抛运动为例,借助信息技术认知工具Tracker软件,将导引式建模教学模式细化到平抛运动教学中,对物理建模教学环节进行讨论,提出物理建模教学的3种策略:依托实际问题情境,借助信息技术工具,选编原始物理问题。

Plasma membrane-anchored fluorescent tracker based on boron-dipyrromethene

The construction of a stable-membrane tracker has significant implications for the visualization of the membrane in live cells.However,most current plasma trackers are not suitable for tracking plasma membranes for a long time due to their limited retention time.Herein,Mem580-F-Sulfo is designed to target and anchor cell membranes and therefore track cell membranes for a longer time.This tracker is composed of a lipophilic boron-dipyrromethene(BODIPY)derivative and a hydrophilic zwitterion to form an amphiphilic structure,which enables its targeting ability toward cell membranes.Moreover,a reactive ester group is included to bind with proteins through covalent bonds in cell membranes nonspecifically,which extends retention time in cell membranes.Mem580-F-Sulfo shows intense brightness(94600),with a high molar absorption coefficient of up to about 100000 L·mol^(-1)·cm^(-1)and a fluorescence quantum yield of up to 0.97.It shows fast cell membrane targeting ability and long retention up to 90 min.In brief,this work has not only developed a tracker with good cell membrane targetability but also provided a new strategy for improving the targeting stability of cell membranes.

基于GeoGebra与轨迹追踪探究抛体运动的规律

源自乒乓自动发球机的启发,自制抛体运动实验仪,通过Tracker追踪软件分析仪器以不同角度、不同初速度抛射物体时,在空气阻力不同的情况下运动的轨迹、射高与射程的变化规律.借助GeoGebra软件输入理论公式实现理论模拟,运用正交分解的方式分解曲线运动,探究抛体运动水平与竖直方向上的运动规律并与实验数据比对,两者结果较一致.

Tracker软件助力高中物理科学探究

利用Tracker视频分析软件定量分析摆球实验,探究机械能守恒定律。Tracker助力高中物理科学探究的三大优势:一是解决实验条件限制困局,让科学探究可行;二是解决二维轨迹记录难题,让科学探究高效;三是突破生活与学科界限,让科学探究真实。总结提升了Tracker分析实验精确度的注意事项,为Tracker的使用提供思路。

“Active Feedback” Fitbit-Based Physical Activity and Sleep Hygiene Intervention for Memory Assessment Service (MAS) Patients with Cognitive Deficits: Feasibility, Acceptability, Sleep Quality, Stress, and Wellbeing Outcomes

Research Background: Compared to the general population, people experiencing age-related cognitive decline are more likely to have low levels of physical activity and sleep problems. Sufficient physical activity and quality sleep are protective factors against cognitive decline and poor health and can improve coping with stressors. The “Active Feedback” intervention comprises a wearable activity and sleep tracker (Fitbit), access to Fitbit software healthy lifestyle software apps;one session with Memory Assessment Service (MAS) staff providing physical activity and sleep hygiene advice and two further engagement, discussion, and feedback sessions. Purpose/Aim: This study investigates the acceptability and feasibility of Active Feedback and the effect on stress, mental wellbeing, and sleep quality, and the links between these factors. Methods: An open-label patient cohort design with no control group was used. Pre-intervention, 4-week and 8-week intervention assessments were performed using participant self-report measures: Perceived Stress Scale (PSS), Warwick-Edinburgh Mental Wellbeing Scale (WEMWBS), and Sleep Conditioning Index (SCI). Twenty-five participants completed an eight-week three-session intervention (18 males and 7 females), with the age range of 66 - 84 years old, and average age of 73.8 years (SD = 5.09). Fifteen participants had a diagnosis of MCI, ten participants did not. Results: There were non-significant improvements in SCI scores from 21.0 (SD = 8.84) to 21.6 (SD = 6.20) at 8 weeks, PSS scores from 17.5 (SD = 5.89) to 17.0 (SD = 6.20) at 8 weeks, and WEMWBS scores from 46.9 (SD = 9.23) to 48.8 (SD = 9.69) at 8 weeks. There were negative correlations between WEMWBS and PSS. Conclusion: Active Feedback intervention was found to be feasible and acceptable. Active Feedback could be enhanced to include motivational interviewing and goal setting.

Simulation and Performance Analysis of Six Types of Sun Tracker Approaches:A Comparative Analysis for Solar Concentrating Technology Application at Burkina Faso

Modelization equations of six approaches for tracking the sun are recalled and used to evaluate the constraints and performances to which they lead to.The geographical study case is taken for the specific latitude of 12 North that is a good matching with the location of the country of Burkina Faso.Three decisive periods were locally established in order to consider the different travels of the sun on sky during one year.This work presents some technical data which facilitates the choice of sun tracking approaches with concern of a concentrator limits such as its angle of acceptance,its motion control card interpolation model,or its minimum irradiation level for energy conversion effectiveness.

犬在搜索过程中尾部摇摆的运动特征研究

本研究将犬在搜索过程中尾部摇摆的运动特征研究形成理论规律从而了解犬在搜索科目作业的过程中犬的动态变化,将为犬搜索科目训练提高效能。本研究通过录制实验犬在搜索过程中尾部摇摆运动的视频,以作为实验素材,使用专业的物理运动视频分析软件Tracker进行提取和计算特征值将+样本数据化,获取相关参数(水平位移x、纵向高度y、运动速度v、角速度ω),并且形成该犬尾部运动的x-t图像(犬尾水平位移x随时间t变化图像)、y-t图像(犬尾纵向高度y随时间t变化图像)、v-t图像(犬尾运动速度v随时间t变化图像)、ω-t图像(犬尾角速度随时间t变化图象),得到该实验犬在搜索过程中的尾部水平位移、纵向高度、运动速度、摇摆角速度的运动特征数据。得出结论:犬在嗅认嗅源时犬尾的水平摇摆幅度小、犬尾由低逐渐升高、尾部摇摆角速度略慢;在进入搜索区域中搜索时犬尾的水平摇摆幅度大、犬尾在竖直方向出现有规律的高低变化、尾部摇摆角速度略快;搜到目标物时摇尾速度>嗅认嗅源时摇尾速度>低头搜索时摇尾速度。

自制“带电粒子在电场中的运动”演示仪

以人教版必修第三册第十章第五节中的例题为设计依据,依托实验室配备的实验器材和生活中的物品,关联物理建模思想,自制了一套采用多级加速的方法加速带电粒子并实现运动轨迹可视化的仪器,为学生提供体验的平台,并借助Tracker软件优化论证方式,使运动规律的获得变得水到渠成,有理有据。

基于Tracker视角下的硬币碰撞——动量守恒定律的另类探究

基于Tracker软件对硬币碰撞过程进行了可视化研究,旨在探究动量守恒定律在二维碰撞中的适用性。通过Tracker软件分析硬币真实情境碰撞,不仅突破了传统实验的限制,而且加深了对动量守恒定律的理解。研究结果发现,在二维碰撞中,动量守恒定律依然成立,这为动量守恒定律的应用范围提供了更广阔的视角。有助于化解教学重难点,提升学生的物理学科素养,体现了信息技术与物理教学的深度融合。