The Effect of Stainless Steel 304 Surface Roughness on Ice Adhesion Shear Strength of Accreted Impact Ice

Aircraft in-flight icing is problematic due to the ad-verse effect on vehicle performance. It occurs when supercooled water droplets (SCWD) present in clouds, under the appropriate environmental conditions, col-lide with the aircraft surface resulting in accretion of ice (i.e., impact icing). Impact ice can range from clear/glaze to rime or a combination of the two (i.e., mixed) with the type determined by the air temperature (0 to -20C), liquid water content (LWC, 0.3-0.6 g/cu.m), and droplet size [median volumetric diameter (MVD) of 15-40 m] present during accretion.1 These impact icing events generally occur at temperatures ranging from 0 to -20C. Below -20C, ice crystals dominate the environment and typically do not adhere to the aircraft surface. A main difference between an impact icing occurrence and a slow growth icing (i.e., freezer ice) one is the speed of the icing event. Besides environmental conditions, ice adhesion strength (IAS) to a metallic substrate depends upon surface roughness. It is known that increasing surface roughness and decreasing temperature lead to in-creases in IAS

Global Savings, Assets and Financial Inclusion: Lessons, Challenges, and Directions

Global Savings, Assets and Financial Inclusion: Lessons, Challenges, and Direction

Structural or dispositional? An experimental investigation of the experience of winning in social casino games (and impulsivity) on subsequent gambling behaviors

BACKGROUND AND AIMS: In the present research, we experimentally investigated whether the experience of winning (i.e., inflated payout rates) in a social casino game influenced social casino gamers' subsequent decision to gamble for money. Furthermore, we assessed whether facets of dispositional impulsivity - negative and positive urgency in particular - also influenced participants' subsequent gambling. METHODS: Social casino gamers who were also current gamblers (N = 318) were asked to play a social casino game to assess their perceptions of the game in exchange for $3. Unbeknownst to them, players were randomly assigned to one of three experimental conditions: winning (n = 110), break-even (n = 103), or losing (n = 105). After playing, participants were offered a chance to gamble their$3 renumeration in an online roulette game. RESULTS: A total of 280 participants (88.1%) elected to gamble, but no between-condition variation in the decision to gamble emerged. Furthermore, there were no differences in gambling on the online roulette between condition. However, higher levels of both negative and positive urgency increased the likelihood of gambling. Finally, impulsivity did not moderate the re

Proximity under threat: The role of physical distance in intergroup relations

Throughout human history, social groups have invested immense amounts of wealth and time to keep threatening out-groups at a distance. In the current research, we explored the relationship between intergroup threat, physical distance, and discrimination. Specifically, we examined how intergroup threat alters estimates of physical distance to out-groups and how physical proximity affects intergroup relations. Previous research has found that people judge threatening out-groups as physically close. In Studies 1 and 2, we examined ways to attenuate this bias. In Study 1 a secure (vs. permeable) US-Mexico border reduced the estimated proximity to Mexico City among Americans who felt threatened by Mexican immigration. In Study 2, intergroup apologies reduced estimates of physical proximity to a threatening cross-town rival university, but only among participants with cross-group friendships. In Study 3, New York Yankees fans who received an experimental induction of physical proximity to a threatening out-group (Boston Red Sox) had a stronger relationship between their collective identification with the New York Yankees and support for discriminatory policies toward members of the out-group (Red Sox fans) as well as how far they chose to sit from out-group members (Red Sox fans). Together, these studies suggest that intergroup threat alters judgment of physical properties, which has important implications for intergroup relations

Placing your faith on the betting floor: Religiosity predicts disordered gambling via gambling fallacies

Background and aims: We examined the potential role religious beliefs may play in disordered gambling. Specifically, we tested the idea that religiosity primes people to place their faith in good fortune or a higher power. In the context of gambling, however, this may lead to gambling fallacies (e.g., erroneous beliefs that one has control over a random outcome). People who are high in religiosity may be more at risk of developing gambling fallacies, as they may believe that a higher power can influence a game of chance. Thus, this research investigated the relationship between religiosity and gambling problems and whether gambling fallacies mediated this relationship. Methods: In Study 1, we recruited an online sample from Amazon's Mechanical Turk to complete measures that assessed the central constructs (religiosity, disordered gambling, and gambling fallacies). In Study 2, we conducted a secondary analysis of a large data set of representative adults (N = 4,121) from a Canadian province, which contained measures that assessed the constructs of interest. Results: In Study 1, religiosity significantly predicted gambling problem. Conversely, there was no direct relationship between religiosity and gambling in Study 2. Importantly, a significant indirect effect of religiosity on disordered gambling severity through gambling fallacies was found in both studies, thus establishing mediation. The results remained the same when controlling for age, gender, ethnicity, and socioeconomic status for both studies. Discussion and conclusion: These findings suggest religiosity and its propensity to be associated wit

Validity and Characterization of Time to Symptom Resolution Outcome Measures in the ACTIV-2/A5401 Outpatient COVID-19 Treatment Trial

BackgroundTime to symptom resolution measures were used in outpatient coronavirus disease 2019 (COVID-19) treatment trials without prior validation.MethodsACTIV-2/A5401 trial participants completed a COVID-19 diary assessing 13 targeted symptoms and global experience (overall COVID-19 symptoms, return to pre-COVID-19 health) daily for 29 days. We evaluated concordance of time to sustained (2 days) resolution of all targeted symptoms (TSR) with resolution of overall symptoms and return to health in participants receiving placebo.ResultsThe analysis included 77 high-risk and 81 standard-risk participants with overall median 6 days of symptoms at entry and median age 47 years, 50% female, 82% white, and 31% Hispanic/Latino. Correlation between TSR and resolution of overall symptoms was 0.80 and 0.68, and TSR and return to health, 0.66 and 0.57 for high- and standard-risk groups, respectively. Of the high- and standard-risk participants, 61% and 79%, respectively, achieved targeted symptom resolution, of which 47% and 43%, respectively, reported symptom recurrence. Requiring >2 days to define sustained resolution reduced the frequency of recurrences.ConclusionsThere was good internal consistency between TSR and COVID-19-specific global outcomes, supporting TSR as a trial end point. Requiring >2 days of symptom resolution better addresses natural symptom fluctuations but must be balanced against the potential influence of non-COVID-19 symptoms.Clinical trials registrationNCT04518410

Transitions to Care in the Community for Prison Releasees with HIV: a Qualitative Study of Facilitators and Challenges in Two States

One in seven people living with HIV in the USA passes through a prison or jail each year, and almost all will return to the community. Discharge planning and transitional programs are critical but challenging elements in ensuring continuity of care, maintaining treatment outcomes achieved in prison, and preventing further viral transmission. This paper describes facilitators and challenges of in-prison care, transitional interventions, and access to and continuity of care in the community in Rhode Island and North Carolina based on qualitative data gathered as part of the mixed-methods Link Into Care Study of prisoners and releasees with HIV. We conducted 65 interviews with correctional and community-based providers and administrators and analyzed the transcripts using NVivo 10 to identify major themes. Facilitators of effective transitional systems in both states included the following: health providers affiliated with academic institutions or other entities independent of the corrections department; organizational philosophy emphasizing a patient-centered, personal, and holistic approach; strong leadership with effective "champions"; a team approach with coordination, collaboration and integration throughout the system, mutual respect and learning between corrections and health providers, staff dedicated to transitional services, and effective communication and information sharing among providers; comprehensive transitional activities and services including HIV, mental health and substance use services in prisons, timely and comprehensive discharge planning with specific linkages/appointments, supplies of medications on release, access to benefits and entitlements, case management and proactive follow-up on missed appointments; and releasees' commitment to transitional plans. These elements were generally present in both study states but their absence, which also sometimes occurred, represent ongoing challenges to success. The qualitative findings on the facilitators and challenges of the transitional systems were similar in the two states despite differences in context, demographics of target population, and system organization. Recommendations for improved transitional systems follow from the analysis of the facilitators and challenges

ACTIV-2: A Platform Trial for the Evaluation of Novel Therapeutics for the Treatment of Early COVID-19 in Outpatients

Clinical Trials Registration ClinicalTrials.gov Identifier: NCT04518410