Handheld computer assists in asthma

2000 ◽  
Vol 263 (1) ◽  
pp. 4-4
Keyword(s):  
Handheld Computer

Arbeitsstress, sozialer Stress und Schlafqualität:

2003 ◽  
Vol 11 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Peter Schulz ◽  
Juliane Hellhammer ◽  
Wolff Schlotz
Keyword(s):  
Handheld Computer ◽  
Sozialer Stress

Zusammenfassung. An 309 Probanden werden in einer Querschnittsuntersuchung zwei Hypothesen überprüft: (1) Schlafstörungen hängen mit sozialem Stress zusammen, nicht mit Arbeitsstress und (2) das Personmerkmal Besorgnisneigung hat sowohl einen direkten als auch einen indirekten, über Stress vermittelten, Effekt auf Schlafstörungen. Nach statistischer Kontrolle der Variablen Besorgnisneigung, Alter und Krankheitshäufigkeit findet sich neben anderen Ergebnissen ein negativer Zusammenhang von Schlafqualität mit sozialem Stress, nicht aber mit Arbeitsstress. Dieser Befund kann in einer anschließenden Pfadanalyse bestätigt werden. In einer Längsschnittuntersuchung wird dann Hypothese (3) überprüft: Sozialer Stress verursacht Beeinträchtigungen der Schlafzufriedenheit. 76 Versuchsteilnehmern wurden Handheld-Computer ausgehändigt, die an zwei aufeinanderfolgenden Tagen Schlafzufriedenheit und verschiedene Arten der Beanspruchung erfassten. Eine crossed-lagged Panel Analyse zeigt einen Zusammenhang von sozialem Stress am ersten Tag mit Schlafzufriedenheit am zweiten Tag, aber keinen umgekehrten Zusammenhang. Die Ergebnisse weisen auf die Bedeutung von Besorgnisneigung und sozialem Stress für die Erklärung von Schlafstörungen hin.

scholarly journals A development platform and execution environment for mobile applications

2018 ◽  
Vol 7 (1) ◽  
Author(s):  
Guillermo Licea Sandoval
Keyword(s):  
Information Systems ◽  
Mobile Applications ◽  
Handheld Computers ◽  
Computer Applications ◽  
Handheld Computer ◽  
Development Platform ◽  
Mobile Information ◽  
Mobile Information Systems ◽  
Execution Environment ◽  
Conventional Computer

Small computing devices are everywhere changing the way people communicate and interact, however applications for these devices are developed more or less with the same tools used for conventional computer applications. Developers of handheld computer applications can find few options for development. In this paper we present MADEE a development and execution environment for mobile information systems running on handheld computers. This environment allows the implementation of mobile information systems faster and easier than using conventional developing tools, including support for conventional computer applications.

New Method to Measure Farm Work Time Using Handheld Computer in the Field

1984 ◽  
Vol 1984 (50) ◽  
pp. 1-13
Author(s):  
Nobuyuki SAWAMURA ◽  
Hiroyuki HONJOH ◽  
Mitsugu TOMITA
Keyword(s):  
New Method ◽  
Work Time ◽  
Handheld Computer ◽  
Farm Work

Trunk Posture Influences Neck Angle When Reading A Tablet Computer

2016 ◽  
Vol 60 (1) ◽  
pp. 942-942
Author(s):  
Kaitlin M. Gallagher ◽  
Ethan C. Douglas
Keyword(s):  
Muscle Activity ◽  
Erector Spinae ◽  
Flexion Angle ◽  
Neck Flexion ◽  
Handheld Computer ◽  
Extensor Muscles ◽  
Head Flexion ◽  
The Moment ◽  
Trunk Position ◽  
Gravitational Moment

In 2013, 64% of American households owned a handheld computer device (e-reader, tablet, smartphones, etc.). The presence of these devices has grown more quickly than our understanding of their effects on musculoskeletal disorders. Their use on a tabletop or a person’s lap causes increased head and neck flexion, as well as an inreased gravitational moment produced by the weight of the head (Straker et al., 2009, Young et al., 2012, Vasavada et al., 2015). A limitation to these studies is that they keep a standard trunk position throughout all tasks; however, people can also assume a semi-reclined position when reading a tablet. The purpose of this study was to determine the influence of a semi-reclined trunk position on neck and head flexion angle, and cervical erector spinae muscle activity. Nineteen participants (10 male, 9 female) read off of a tablet in four postures: with the tablet in their lap, on a tabletop, off of a standard computer monitor, and semi-reclined to an angle of 30 degrees from the vertical. Having the tablet on the lap ( M=16%MVC, SD=8%MVC) significantly increased muscle activity of the cervical erector spinae ( p=.0023) compared to reading off of a monitor or in the semi-reclined position (approximately 10%MVC). Neck and head flexion angles significantly increased ( p<.001) when reading the tablet off the lap (neck M=56.8o, SD=17.3o; head M=53.4o, SD=12.9o) versus the computer (neck M=6.4o, SD=6.4o; head M=8.2o, SD=7.4o), however, the head angle during semi-reclined reading stayed more vertical despite having the highest increase in neck flexion angle (neck M=71.6o, SD=14.0o; head M=19.7o, SD=9.2o). In the semi-reclined position, the gravitational moment of the head is second smallest for the four reading positions. In theory, this is desired as the moment that must be produced by the musculature and surround tissues would be less. The downside to this posture is that many of the neck extensor muscles may still not be in optimal force and moment production position. Many of the neck muscles that assist with extension originate from C5 to T5 and insert on C5 and above (Vasavada et al., 1998). At 30 degrees of neck flexion, the moment generating capability of the spenius and semispinalis muscles are decreased compared to when at a neutral position and fascicle length of splenius cervicis, capitis, and semispinalis capitis muscles experience changes of more than 70% of optimal length (Vasavada et al., 1998). While many of the extensor muscles only show moment arms that vary by 1 cm or less, for some there can be about a 2-3 cm changes as one goes from a flexed to extended neck posture (Vasavada et al., 1998). These combined changes mean that the force producing capabilities of the neck extensor muscles may be compromised a semi-reclined position. Future studies should report torso angle to properly analyze biomechanical risk factors during handheld computer use and compare results between studies.

The Case for the Personal Digital Assistant (PDA)

2002 ◽  
Vol 37 (4) ◽  
pp. 418-422 ◽  
Author(s):  
Bill G. Felkey ◽  
Brent I. Fox
Keyword(s):  
Computer Technology ◽  
Personal Digital Assistant ◽  
Valuable Resource ◽  
Handheld Computer ◽  
Business Applications ◽  
Novice Users

This continuing series will be a valuable resource for both experienced and novice users of handheld computer technology. Topics will include how to evaluate hardware and software, clinical and business applications, and the development of a “digital peripheral brain.” The authors will also discuss PDA organization skills that can maximize professional and personal efficiency.

A Handheld Computer System for Classroom Observations

1989 ◽  
Vol 9 (4) ◽  
pp. 200-206 ◽  
Author(s):  
Richard A. Saudargas ◽  
R.D. Bunn
Keyword(s):  
Special Education ◽  
Research Area ◽  
Developmental Differences ◽  
Observation System ◽  
Classroom Observations ◽  
Handheld Computer ◽  
Mainframe Computer ◽  
Record Data ◽  
Computer Research ◽  
Ibm Pc

This article describes a handheld computer observation system that uses Hewlett-Packard HP71B computers for recording data and an IBM-PC for storing and analyzing the data. Two observation algorithms are used in research. In the first, one child is observed as that child interacts with peers and the teacher. In the second algorithm, a focal child is observed as that child interacts with multiple adults, as is true in many special education classrooms. Data analyses are done on the IBM-PC or a mainframe computer. Research using the computers takes advantage of their ability to record data in real time, frequencies, and sequences. One research area has been to validate the accuracy of a paper-and-pencil measure in the classroom. A second research area concerns developmental differences in sustained attention of handicapped and nonhandicapped children. A third research area is concerned with sequential behavioral interrelationships between teachers and children within and between regular and special education classrooms.

scholarly journals A Handheld Computer as Part of a Portable In Vivo Knee Joint Load-Monitoring System

2008 ◽  
Vol 2 (3) ◽  
Author(s):  
J. A. Szivek ◽  
V. S. Nandakumar ◽  
C. P. Geffre ◽  
C. P. Townsend
Keyword(s):  
Knee Joint ◽  
Monitoring System ◽  
Complete Healing ◽  
Handheld Computer ◽  
Wireless Receiver ◽  
In Vivo Measurement ◽  
In Vivo Testing ◽  
Computer Based ◽  
Joint Load

In vivo measurement of loads and pressures acting on articular cartilage in the knee joint during various activities and rehabilitative therapies following focal defect repair will provide a means of designing activities that encourage faster and more complete healing of focal defects. It was the goal of this study to develop a totally portable monitoring system that could be used during various activities and allow continuous monitoring of forces acting on the knee. In order to make the monitoring system portable, a handheld computer with custom software, a USB powered miniature wireless receiver, and a battery-powered coil were developed to replace a currently used computer, ac powered benchtop receiver, and power supply. A Dell handheld running Windows Mobile operating system programed using LABVIEW was used to collect strain measurements. Measurements collected by the handheld-based system connected to the miniature wireless receiver were compared with the measurements collected by a hardwired system and a computer based system during benchtop testing and in vivo testing. The newly developed handheld-based system had a maximum accuracy of 99% when compared to the computer based system.

Sign in / Sign up

Export Citation Format

Share Document