A text message intervention for quitting cigarette smoking among young adults experiencing homelessness: study protocol for a pilot randomized controlled trial.

BackgroundCigarette smoking is much more prevalent among young people experiencing homelessness than in the general population of adolescents and young adults. Although many young homeless smokers are motivated to quit, there are no empirically-evaluated smoking cessation programs for this population. It is important that any such program address the factors known to be associated with quitting-related outcomes among homeless young people, to provide ongoing support in a way that accommodates the mobility of this population, and does not rely on scarce service provider resources for its delivery. The objective of this project is to develop and pilot test a text messaging-based intervention (TMI), as an adjunct to brief cessation counseling and provision of nicotine patches, to help homeless young people who want to quit smoking.Methods/designThis pilot study will utilize a cluster cross-over randomized controlled design with up to 80 current smokers who desire to quit and are recruited from three drop-in centers serving young people experiencing homelessness in the Los Angeles area. All participants will be provided with a minimum standard of care: a 30-min group-based smoking cessation counseling session and free nicotine replacement. Half of these smokers will then also receive the TMI, as an adjunct to this standard care, which will provide 6 weeks of ongoing support for quitting. This support includes continued and more intensive education regarding nicotine dependence, quitting smoking, and relapse; does not require additional agency resources; can be available "on demand" to users; and includes features to personalize the quitting experience. This study will investigate whether receiving the TMI adjunct to standard smoking cessation care results in greater reductions in cigarette smoking compared to standard care alone over a 3-month period.DiscussionThis study has the potential to address an important gap in the clinical research literature on cigarette smoking cessation and provide empirical support for using a TMI to provide ongoing assistance and support for quitting among young smokers experiencing homelessness. Trial registration ClinicalTrials.gov Identifier NCT03874585. Registered March 14, 2019, https://clinicaltrials.gov/ct2/show/record/NCT03874585

Some aspects of steady and accelerated motion of rotating viscous fluids

An apparatus and its associated instrumentation, designed and built to study problems related to steady-state and-accelerated motion of rotating fluids are described. Experiments were conducted within the limitations of the existing equipment to determine the festive end reliability of the combined unit. Both sets of experiments were run under steady State Conditions. Through a theoretical treatment by Stokes and Brodmann in which the couple exerted on one cylinder is shown to be a function of the speed of the other, the fluid viscosity, and the cylinder radii, it was, found that an additional calibration was required before quantitative results could be obtained. The experiments, however, indicated excellent repeatability suggesting little random error and the probability of reliable data once the Calibration was completed. The equipment was used in the second group of experiments to detect the onset of fluid instability characterised by an increase in the frictional couple exerted on the fluid boundaries. It was possible to detect unstable conditions, however lack of sensitivity in the/the misting instrumentation prevented the recording of absolute values. With suitably-prepared solutions, the onset of instability, expressed as a ratio, was determined visually to within -2% of the estimated value. A theoretical analysis by Professor T H. forms the basis for proposed experiments in accelerated motion. In, the paper, Havelook considers be motion of a hollow cylinder pertaining a viscous fluid being accelerated from rest under the action of constant torque. A non-dimensional representation of the relevant parameters is suggested in the present paper as a means of Comparing theoretical end experimentally determine results. In order to simplify computation of the theoretical solution a programme rue written for the "DIME" computer and using a typical but hypothetical sat of values, a electrocurves was produced. A discussion of the theoretical solutions end of probable-experimental results is given followed by a suggested course of future Programme

Methodology for Estimating Nondestructive Evaluation Capability

This paper outlines a proposed methodology for using combinations of physical modeling of an inspection process along with laboratory and production data to estimate Nondestructive Evaluation (NDE) capability. The physical/statistical prediction model will be used to predict Probability of Detection (POD), Probability of False Alarm (PFA) and Receiver Operating Characteristic (ROC) function curves. These output functions are used to quantify the NDE capability. The particular focus of this work is on the use of ultrasonic methods for detecting hard-alpha and other subsurface flaws in titanium using gated peak detection. This is a uniquely challenging problem since the inspection must detect very complex subsurface flaws with significant “material” noise. However, the underlying framework of the methodology should be general enough to apply to other NDE methods

Geochemical Results from a Rock Geochemical Survey in the Mount Belknap Caldera Vicinity, Utah

Rock, stream-sediment, and hydrogeochemical surveys were conducted in the Mount Belknap caldera area, south-central Utah, during the summer of 1979. The presence of leucocratic rocks and relatively high concentrations of the elements Nb, Be, Ga, Y, Pb, Sn, Mo, and F with corresponding low concentrations of the elements Ba, Mg, Ca, Fe, Sr, and Cu suggests that late phase highly differentiated felsic magmas were intruded and (or) erupted in the caldera vicinity. The presence of Mo and Sn in the rocks and F in the water samples suggest that the ore elements were concentrated, first in residual fluids in the magma and possibly later in epigenetic mineral deposits. The data suggest several target areas for further exploration

Complexity effects in form detection

This study examines the effect of pattern complexity on the detectability of dotted target patterns presented in dotted visual noise. The effects of complexity on performance in this detection task were shown to be substantial. Discrepancies between the psychophysical scores and the prediction of a previously described autocorrelation theory of form detection (Uttal, 1975) point to specific deficiencies in the theory's sensitivity to particular classes of geometrical form.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/23051/1/0000623.pd

A RANDOMIZED, DOUBLE-BLIND CLINICAL TRIAL COMPARING THE 22 VERSUS 26 GAUGE NEEDLE IN THE PRODUCTION OF THE POST-LUMBAR PUNCTURE SYNDROME IN NORMAL INDIVIDUALS

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/73449/1/j.1526-4610.1972.hed1202073.x.pd