Critical Evaluation and Compilation of Viscosity and Diffusivity Data Semiannual Status Report No. 1, Jul. 1 - Dec. 31, 1965

Compilation and evaluation of diffusivity and viscosity data on gas and liquid turbulent flow system

Beginning Algebra Made Useful

Beginning Algebra Made Useful addresses the needs of learners to make sense of algebra by quantifying and generalizing everyday occurrences such as commuting to work, buying gas or pizza, and determining the better deal. It requires learners to actively engage with algebraic concepts through physical and thought experiments in ways that help them connect ideas, representations, and contexts, and solve problems that arise in their daily lives. The text helps learners grow their brains and develop growth mindsets as they learn algebra conceptually. Problem sets continue the process, extending work begun in each lesson, applying new understandings to new contexts, and considering ideas that arise more fully in upcoming lessons. Longer assignments that can be used as group projects are included in the text. Group work is encouraged throughout the text; suggestions for orchestrating group work are included. The text is open access and free for download by students and instructors in .pdf format. In the electronic format, graphics are in full color and there are live html links to resources, software, and applets.https://scholarworks.gvsu.edu/books/1025/thumbnail.jp

De-biasing interferometric visibilities in VLTI-AMBER data of low SNR observations

AIMS: We have found that the interferometric visibilities of VLTI-AMBER observations, extracted via the standard reduction package, are significantly biased when faint targets are concerned. The visibility biases derive from a time variable fringing effect (correlated noise) appearing on the detector. METHODS: We have developed a method to correct this bias that consists in a subtraction of the extra power due to such correlated noise, so that the real power spectrum at the spatial frequencies of the fringing artifact can be restored. RESULTS: This pre-processing procedure is implemented in a software, called AMDC and available to the community, to be run before the standard reduction package. Results obtained on simulated and real observations are presented and discussed.Comment: 7 pages, 9 figure

Nuclear spin relaxation and centrifugal distortion effects in dilute silane gas

We have measured the proton longitudinal spin relaxation rate in dilute gaseous silane (SiH4) between 10−2 and 1 amagats and are able to observe the influence of rotational Q branch centrifugal distortion transitions

Nuclear spin relaxation and centrifugal distortion effects in dilute silane gas

We have measured the proton longitudinal spin relaxation rate in dilute gaseous silane (SiH4) between 10−2 and 1 amagats and are able to observe the influence of rotational Q branch centrifugal distortion transitions

“Just live with it”: Having to live with breast cancer related lymphedema

AbstractAn exploratory qualitative research approach was selected for this study aiming to explore how people living with breast cancer related lymphedema experience this complication. Unstructured interviews were conducted with nine purposively selected participants. Living with breast cancer related lymphedema was not easy. Participants were not informed of the possibility of developing lymphedema and felt let down by the medical professionals they consulted. They had to face the physical, psychological and practical consequences without the continuous support of a knowledgeable therapist. Managing the lymphedema was a challenge as they could not afford the necessary treatment and the self-care items. In addition, treatment failure resulted in them feeling exploited and using various treatment options. Nurses should maintain a high level of suspicion of breast cancer related lymphedema, assess patients for lymphedema and refer them to a therapist specifically trained in the management of this debilitating condition.Hierdie studie ondersoek die belewenis van mense met borskanker verwante limfedeem. ‘n Kwalitatiewe eksploratiewe navorsingsontwerp is gekies en ongestruktureerde onderhoude is met nege doelgerig gekose persone gevoer. Limfedeem kompliseer die lewe en die proefpersone het die nie maklik gevind om daarmee saam te leef nie. Hulle is nie ingelig oor die moonlikhied om limfedeem te ontwikkel nie en was van mening dat hulle deur die medici wat hulle behandel het in die steek gelaat is. Die proefpersone moes die fisiese, psigologiese en praktiese gevolge van limfedeem sonder die bystand van ‘n kundige terapeut te bowe kom. Die hantering van die limfedeem was ‘n uitdaging aangesien hulle nie die behandeling en self-sorg artikels kon bekostig nie. Die slegte resultate van behandeling het tot gevolg gehad dat die proefpersone uitgebuit gevoel het en ook verskillende behandelingsopsies gevolg het. Verpleegkundiges moet ‘n hoë vlak van bewustheid ten opsigte van limfedeem handhaaf, pasiënte hiervoor beraam en na ‘n terapeut wat in limfedeem spesialieer verwys

Microfabricated high-finesse optical cavity with open access and small volume

We present a microfabricated optical cavity, which combines a very small mode volume with high finesse. In contrast to other micro-resonators, such as microspheres, the structure we have built gives atoms and molecules direct access to the high-intensity part of the field mode, enabling them to interact strongly with photons in the cavity for the purposes of detection and quantum-coherent manipulation. Light couples directly in and out of the resonator through an optical fiber, avoiding the need for sensitive coupling optics. This renders the cavity particularly attractive as a component of a lab-on-a-chip, and as a node in a quantum network

Evolving quorum sensing in digital organisms

For centuries it was thought that bacteria live asocial lives. However, recent discoveries show many species of bacteria communicate in order to perform tasks previously thought to be limited to multicellular organisms. Central to this capability is quorum sensing, whereby organisms detect cell density and use this information to trigger group behaviors. Quorum sensing is used by bacteria in the formation of biofilms, secretion of digestive enzymes and, in the case of pathogenic bacteria, release of toxins or other virulence factors. Indeed, methods to disrupt quorum sensing are currently being investigated as possible treatments for numerous diseases, including cystic fibrosis, epidemic cholera, and methicillin-resistant Staphylococcus aureus. In this paper we demonstrate the evolution of a quorum sensing behavior in populations of digital organisms. Specifically, we show that digital organisms are capable of evolving a strategy to collectively suppress self-replication, when the population density reaches a specific, evolved threshold. We present the evolved genome of an organism exhibiting this behavior and analyze the collective operation of this “algorithm. ” Finally, through a set of experiments we demonstrate that the behavior scales to populations up to 400 times larger than those in which the behavior evolved

Bayesian Analysis of Individual Level Personality Dynamics

A Bayesian technique with analyses of within-person processes at the level of the individual is presented. The approach is used to examine whether the patterns of within-person responses on a 12-trial simulation task are consistent with the predictions of ITA theory (Dweck, 1999). ITA theory states that the performance of an individual with an entity theory of ability is more likely to spiral down following a failure experience than the performance of an individual with an incremental theory of ability. This is because entity theorists interpret failure experiences as evidence of a lack of ability which they believe is largely innate and therefore relatively fixed; whilst incremental theorists believe in the malleability of abilities and interpret failure experiences as evidence of more controllable factors such as poor strategy or lack of effort. The results of our analyses support ITA theory at both the within- and between-person levels of analyses and demonstrate the benefits of Bayesian techniques for the analysis of within-person processes. These include more formal specification of the theory and the ability to draw inferences about each individual, which allows for more nuanced interpretations of individuals within a personality category, such as differences in the individual probabilities of spiraling. While Bayesian techniques have many potential advantages for the analyses of processes at the level of the individual, ease of use is not one of them for psychologists trained in traditional frequentist statistical techniques