2,531 research outputs found
On the Incompatibility of Standard Quantum Mechanics and the de Broglie-Bohm Theory
It is shown that the de Broglie-Bohm quantum theory of multi-particle systems
is incompatible with the standard quantum theory of such systems unless the
former is ergodic. A realistic experiment is suggested to distinguish between
the two theories.Comment: A few technical changes incorporated in section V without any change
in conclusion
Picture This: Using photo-research exhibits as science outreach
Is a picture worth a thousand words? This paper discusses a unique science outreach initiative–provocative photo-research exhibits on sexism in science.
Gender imbalance in science, technology, engineering, and math (STEM) is not only a concern from a social justice perspective, but also has negative consequences for scientific innovation and the economy, given that lack of workplace gender diversity is associated with lower revenue and returns. Science outreach (i.e., public outreach by scientists) could be particularly impactful in Waterloo, Ontario – a region known as ‘Canada’s Silicon Valley’ that contributes over $30-billion annually to the global economy. Portraying complex social issues using a visual medium has the potential to be accessible to a diverse audience. Images from two photo-research exhibits #DistractinglySexist (2015) and #DistractinglyHonest (2016) were based on social-psychological literature and findings from research by two of the authors (Hennessey and Foster) on the social costs of confronting sexism in science. Feedback indicates that these exhibits are effective outreach tools, and appear to facilitate discussions on sexism in science, and expand the social network of women in science by connecting those in the series and people who engage with exhibit materials
Two-particle interference in standard and Bohmian quantum mechanics
The compatibility of standard and Bohmian quantum mechanics has recently been
challenged in the context of two-particle interference, both from a theoretical
and an experimental point of view. We analyze different setups proposed and
derive corresponding exact forms for Bohmian equations of motion. The equations
are then solved numerically, and shown to reproduce standard quantum-mechanical
results.Comment: Minor corrections, 2 references added, version to appear in J. Phys.
Internet Exchanges for Used Books: An Empirical Analysis of Welfare Implications
Information technology-enabled exchanges have enhanced the viability of a variety of secondary
markets, notably markets for used books. Electronic used book exchanges, in particular, offer a wider selection, lower search costs, and significantly lower prices than physical used bookstores do. The increased viability of these used book markets has caused concern among groups such as the Book Publishers Association and AuthorâÃÂÃÂs Guild who believe that used book markets will significantly cannibalize new book sales.
This proposition, while theoretically possible, is based on speculation as opposed to empirical
evidence. In this research, we use a unique dataset collected from Amazon.comâÃÂÃÂs new and used
marketplaces to estimate the impact of IT-enabled used book markets on new book sales. We use
these data to calculate the impact of these secondary market exchanges on consumer and publisher welfare by calculating the cross-price elasticity of new books sales with respect to used
book prices.
Our analysis suggests that IT-enabled secondary market exchanges increase consumer surplus by
approximately 32 million in gross profit annually (about 0.2% of total gross profit) due to the
presence of AmazonâÃÂÃÂs used book markets. Further, the additional used book readership gain
from these electronic markets may mitigate author losses through increased revenue from secondary
sources such as speaking and licensing fees. These surplus changes, combined with the estimated
$64 million the used book market added to AmazonâÃÂÃÂs gross profits, show that IT-enabled used markets for books have a strong positive first-order impact on total welfare.Information Systems Working Papers Serie
Sleep Quality: A Mediator in the Pathway of Stress and Cold Symptom Severity
Stress is a known contributor to immune system suppression associated with higher illness susceptibility, including acute infectious respiratory illness or the common cold. Sleep quality is an additional mechanism that may underlie the association between stress and cold symptomatology. Although the associations between stress and sleep and cold symptomatology have been examined separately, little is known about the mechanistic role of sleep in these associations. The present study fills that void by examining archival data from the Common Cold Project (Pittsburgh Cold Study 3). The results indicate sleep quality surfaced as an indirect pathway linking stress to changes in cold severity. Additionally, better sleep was associated with greater changes in cold severity above perceived stress. These findings suggest that better sleep may be associated with less severe symptomatology. Future research should address mechanisms underlying the associations between stress, sleep, and cold symptomatology
Picture This: Using photo-research exhibits as science outreach
Is a picture worth a thousand words? This paper discusses a unique science outreach initiative–provocative photo-research exhibits on sexism in science.
Gender imbalance in science, technology, engineering, and math (STEM) is not only a concern from a social justice perspective, but also has negative consequences for scientific innovation and the economy, given that lack of workplace gender diversity is associated with lower revenue and returns. Science outreach (i.e., public outreach by scientists) could be particularly impactful in Waterloo, Ontario – a region known as ‘Canada’s Silicon Valley’ that contributes over $30-billion annually to the global economy. Portraying complex social issues using a visual medium has the potential to be accessible to a diverse audience. Images from two photo-research exhibits #DistractinglySexist (2015) and #DistractinglyHonest (2016) were based on social-psychological literature and findings from research by two of the authors (Hennessey and Foster) on the social costs of confronting sexism in science. Feedback indicates that these exhibits are effective outreach tools, and appear to facilitate discussions on sexism in science, and expand the social network of women in science by connecting those in the series and people who engage with exhibit materials
Sustainability performance measurement : a preliminary classification framework of models and indicators
In this position paper we focus on the diversity of sustainability measurements. Based on existing research on performance measurement, we propose a preliminary classification framework summarizing sustainability models and indicators. By describing illustrative examples, we claim that several models and indicators can be distinguished with their own peculiarities. Having such a framework is interesting for both academia and business to structure the range of models and indicators and to ultimately select the appropriate sustainability measurement approach. The proposed framework should be validated by further research
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