Pilot Testing of an mHealth App for Tobacco Cessation in People Living With HIV: Protocol for a Pilot Randomized Controlled Trial.

BACKGROUND: An estimated 40% of people living with HIV smoke cigarettes. Although smoking rates in the United States have been declining in recent years, people living with HIV continue to smoke cigarettes at twice the rate of the general population. Mobile health (mHealth) technology is an effective tool for people living with a chronic illness, such as HIV, as currently 84% of households in the United States report that they have a smartphone. Although many studies have used mHealth interventions for smoking cessation, few studies have recruited people living with HIV who smoke. OBJECTIVE: The objective of the pilot randomized controlled trial (RCT) is to examine the feasibility, acceptability, and preliminary efficacy of the Sense2Quit App as a tool for people living with HIV who are motivated to quit smoking. METHODS: The Sense2Quit study is a 2-arm RCT for people living with HIV who smoke cigarettes (n=60). Participants are randomized to either the active intervention condition, which consists of an 8-week supply of nicotine replacement therapy, standard smoking cessation counseling, and access to the Sense2Quit mobile app and smartwatch, or the control condition, which consists of standard smoking cessation counseling and a referral to the New York State Smokers' Quitline. The Sense2Quit app is a mobile app connected through Bluetooth to a smartwatch that tracks smoking gestures and distinguishes them from other everyday hand movements. In the Sense2Quit app, participants can view their smoking trends, which are recorded through their use of the smartwatch, including how often or how much they smoke and the amount of money that they are spending on cigarettes, watch videos with quitting tips, information, and distractions, play games, set reminders, and communicate with a study team member. RESULTS: Enrollment of study participants began in March 2023 and is expected to end in October 2023. All data collection is expected to be completed by the end of January 2024. This RCT will test the difference in outcomes between the control and intervention arms. The primary outcome will be the percentage of participants with biochemically verified 7-day point prevalence smoking or tobacco abstinence at their 12-week follow-up. Results from this pilot study will be disseminated to the research community following the completion of all data collection. CONCLUSIONS: The Sense2Quit study leverages mHealth so that it can help smokers improve their efforts at smoking cessation. Our research has the potential to not only increase quitting rates among people living with HIV who may need a prolonged, tailored intervention but also inform further development of mHealth for people living with HIV. This mHealth study will contribute significant findings to the greater mHealth research community, providing evidence as to how mHealth should be developed and tested among the target population. TRIAL REGISTRATION: ClinicalTrials.gov NCT05609032; https://clinicaltrials.gov/study/NCT05609032. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): DERR1-10.2196/49558.

An explainable COVID-19 detection system based on human sounds.

Acoustic signals generated by the human body have often been used as biomarkers to diagnose and monitor diseases. As the pathogenesis of COVID-19 indicates impairments in the respiratory system, digital acoustic biomarkers of COVID-19 are under investigation. In this paper, we explore an accurate and explainable COVID-19 diagnosis approach based on human speech, cough, and breath data using the power of machine learning. We first analyze our design space considerations from the data aspect and model aspect. Then, we perform data augmentation, Mel-spectrogram transformation, and develop a deep residual architecture-based model for prediction. Experimental results show that our system outperforms the baseline, with the ROC-AUC result increased by 5.47%. Finally, we perform an interpretation analysis based on the visualization of the activation map to further validate the model.

How Does Group Climate Foster or Hinder Employee Voice? A Cross-Level Examination.

Although empirical evidence has accumulated showing that group climate has a significant impact on employee voice, knowledge about how different types of climates may influence voice is limited. Drawing upon the theory of planned behavior, we develop and test a model that explains whether and how the two group climates, cooperation and sanction, differentially predict employee promotive and prohibitive voice. We test the hypotheses using data collected from a sample of 274 full-time employees nested in 58 workgroups across two time periods. The empirical results show that group climate predicts employee voice in different ways: Group cooperation climate has a positive effect on both types of employee voice, whereas group sanction climate shows a negative effect on promotive voice. Individuals' psychological capital is a cross-level mediator in the relationship between group climate and employee voice. Employees' prevention focus negatively moderates the relationship between psychological capital and employee voice. These results highlight the important effect of group climate on employee voice in organization and calls on managers to create a favorable environment to increase employees' psychological capital and voice behaviors.

Leader Humility, and Subordinates' Organizational Citizenship Behavior and Withdrawal Behavior: Exploring the Mediating Mechanisms of Subordinates' Psychological Capital.

As a bottom-up leadership style, leader humility has received considerable attention from researchers. Among the abundant studies revealing the positive impact of leader humility on employees' work attitude and behaviors, there is less knowledge on how leader humility influences subordinates' organizational citizenship behavior (OCB) and withdrawal behavior. On the basis of the social information processing theory, this study proposed a cross-level mediation model and examined the direct impact of leader humility on subordinates' OCB and withdrawal behavior. We also further explored the underlying psychological mechanism and examined the mediating effect of psychological capital on these relationships. Using a two-wave panel design and 274 employees' questionnaire data, the empirical analysis found that: (1) leader humility was positively related to subordinates' OCB and negatively related to subordinates' withdrawal behavior; (2) leader humility was positively related to subordinates' psychological capital; and (3) psychological capital played a cross-level mediating role in the leader humility-subordinates' OCB relationship and the leader humility-subordinates' withdrawal behavior relationship. Theoretical and practical implications, limitations, and suggestions for future research are also discussed.

Ethical Leadership as the Reliever of Frontline Service Employees' Emotional Exhaustion: A Moderated Mediation Model.

Based on the conservation of resources theory, this study aims to create new knowledge on the antecedents of emotional exhaustion. We explore the internal mechanism and boundary conditions of the impact of ethical leadership on emotional exhaustion, using data gathered from 460 frontline service employees at an airport in China. Employees completed questionnaires regarding ethical leadership, emotional exhaustion, organizational embeddedness, job satisfaction, and demographic variables. After controlling for the effects of demographic variables and company tenure, ethical leadership was found to have a negative impact on emotional exhaustion ( = -0.128, p < 0.01), and to be positively related to organizational embeddedness ( = 0.518, p < 0.01). After adding in the mediating variable (organizational embeddedness), the effect of ethical leadership on emotional exhaustion was no longer significant ( = 0.012, ns), while organizational embeddedness emerged as significantly related to emotional exhaustion ( = -0.269, p < 0.01), implying that the effect of ethical leadership on emotional exhaustion was completely mediated by organizational embeddedness. Simultaneously, the results suggested that job satisfaction could strengthen the mediating effect of organizational embeddedness on emotional exhaustion (the difference in the mediating effect between the groups with respective high and low job satisfaction was -0.096, p < 0.05). This study proposed and validated a moderated mediation model, the implications of which are that ethical leadership is an effective way to alleviate frontline service employees' emotional exhaustion.