186,727 research outputs found
Pauli Manuscript Collection: letter to H.-P. Dürr
No full textStapp wrote to request some clarifications on the spinor model (roof operators, degeneracy of the vacuum and isotopic spin dependences)
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Autos Safer? Stapp Thinks So
No full textVideo footage from the WBAP-TV station in Fort Worth, Texas to accompany a news story about a speech by Col. John P. Stapp, a military physician, at a Dallas medical convention. Col. Stapp's speech describes his research on the physical effects of high-speed travel
The world according to quantum mechanics (or, the 18 errors of Henry P. Stapp)
No full textSeveral errors in Stapp's interpretation of quantum mechanics and its
application to mental causation (Henry P. Stapp, "Quantum theory and the role
of mind in nature," e-Print quant-ph/0103043) are pointed out. An
interpretation of (standard) QM that avoids these errors is presented.Comment: Comment on quant-ph/0103043, 20 pages, LaTeX2
Dr. Gaume and Col. Stapp discussing Lunar Housing Simulator
No full textPhotograph of Dr. Gaume (left) and Colonel John P. Stapp, Chief of Aerospace Medicine Laboratory (right) with drawing of the Lunar Housing Simulator (Phase 1). Wright-Patterson Air Force Base, Ohio
Mind, matter and quantum mechanics
No full text"Scientists other than quantum physicists often fail to comprehend the enormity of the conceptual change wrought by quantum theory in our basic conception of the nature of matter," writes Henry Stapp. Stapp is a leading quantum physicist who has given particularly careful thought to the implications of the theory that lies at the heart of modern physics. In this book, which contains several of his key papers as well as new material, he focuses on the problem of consciousness and explains how quantum mechanics allows causally effective conscious thought to be combined in a natural way with the physical brain made of neurons and atoms. The book is divided into four sections. The first consists of an extended introduction. Key foundational and somewhat more technical papers are included in the second part, together with a clear exposition of the "orthodox" interpretation of quantum mechanics. The third part addresses, in a non-technical fashion, the implications of the theory for some of the most profound questions that mankind has contemplated: How does the world come to be just what it is and not something else? How should humans view themselves in a quantum universe? What will be the impact on society of the revised scientific image of the nature of man? The final part contains a mathematical appendix for the specialist and a glossary of important terms and ideas for the interested layman. This third edition has been significantly expanded with two new chapters covering the author's most recent work
Evaluation of stAPP: a smartphone-based intervention to reduce prolonged sitting among Belgian adults.
No full textExcessive uninterrupted sitting, also known as sedentary behavior, has been detrimentally associated with several health outcomes. However, the general population is often unaware of these health risks. Mobile phone technology offers great potential to increase awareness and to initiate behavior change. This study examined the short-term effects of stAPP, a smartphone-based intervention, on prolonged sitting behavior. Fifty-eight participants were randomly assigned to an intervention group (IG, n = 31) or a control group (CG, n = 27). After 1 week of baseline assessment, the IG received stAPP (i.e. smartphone, smartphone app and corresponding motion sensor) and used it during the following week. CG participants were monitored during 2 weeks without receiving stAPP. Total daily sitting time and prolonged sitting bouts (>30 min bouts of sitting) were objectively assessed using activPAL3 inclinometers. Although no significant changes emerged in the CG in any of the sitting parameters, total sitting time (on weekdays; p = 0.032), number of prolonged sitting bouts (>30 min of sitting) [both on week- (p < 0.001) and weekend days (p = 0.008)] and average duration of prolonged sitting bouts [both on week- (p = 0.004) and weekend days (p = 0.029)] decreased significantly in the IG. The stAPP smartphone-based intervention constitutes a promising intervention tool to interrupt and reduce prolonged sitting behavior. Further long-term studies on a larger scale are needed to further explore the effectiveness of a smartphone-based intervention aimed at reducing prolonged sitting behavior.sponsorship: This work was supported by the Department of Welfare, Public Health and Family of the Flemish Government. (Department of Welfare, Public Health and Family of the Flemish Government)status: Published onlin
The stAPP randomized controlled trial - A smartphone based intervention to interrupt and reduce prolonged sitting
No full textPurpose: Currently, there is a need for interventions in which participants are made aware of the problem of prolonged sitting. Moreover, such interventions should encourage people to change their sedentary lifestyle. In this pilot study we developed ‘stAPP’, an innovative app for smartphones to reduce prolonged sitting.
Methods: 58 participants (18-55 years) were recruited by flyers and e-mail and randomly assigned to a control group (CG, n=27) or an intervention group (IG, n=31). The study period lasted for 2 weeks during which sitting behavior of both groups was objectively measured by the ActivPAL. The CG was asked not to change lifestyle. The IG received the ‘stAPP’ system after 1 week and was asked to use it during the following week. The ‘stAPP’ system consisted of an app on the smartphone and a motion sensor worn on the thigh that monitored the user’s sitting status. During the development of the app, the principles of the Self Determination Theory were taken into account (i.e., satisfying the needs for autonomy, relatedness and competence). The app contained specific persuasive design elements, e.g. graphs that visualized sitting behavior, an index that reflected how well a participant was doing, achievements, alert messages when sitting for longer than 30 minutes …
Results: No significant changes were found in the CG for any parameter.
By contrast, in the IG, prolonged sitting behavior, expressed in total minutes and % of awakening hours, significantly decreased from pre to post-test (-184.8 minutes or -50.8% on a weekday, -137.0 minutes or -47.0% on a weekend day) (p<0.001, p=0.004, respectively).
Moreover, the number of bouts including at least 30 minutes of uninterrupted sitting behavior decreased in the IG with 2.8 on a weekday (p<0.001), and with 1.9 on a weekend day (p=0.01). The average duration of those bouts decreased significantly in the IG (-13.0 minutes on a weekday (p=0.005), -13.2 minutes on a weekend day (p=0.03)).
Standing behavior, expressed as total minutes and % of awakening hours, increased significantly in the IG on weekdays (+4.2% or + 40.5 minutes, p=0.04)).
Conclusions: stAPP seems to be an efficient methodology to reduce sitting behavior in adults on the short term. More research is needed to investigate the long term effects.
Key words: sitting behavior, smartphone application, persuasive technologies, healthy adultssponsorship: Flemish Governmentstatus: Publishe
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Heavy truck cab safety study. Final report
No full textReference: Stapp Car Crash Conference. Thirty-fifth. Proceedings. Warrendale, SAE, Nov 1991, p. 199-225Reference: Also published in SAE Transactions 1991. Volume 100. Warrendale, SAE, 1992American Trucking Associations, Alexandria, Va.http://deepblue.lib.umich.edu/bitstream/2027.42/907/2/81896a12.0001.001.pd
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