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The purpose of this study was to determine the influence of environmental pH on production of biofilms and virulence genes expression in Pseudomonas aeruginosa.

Among 303 clinical and environmental samples 109 (61 + 48) isolates were identified as clinical and environmental P. aeruginosa isolates, respectively. Clinical samples were obtained from patients in the Al-Yarmouk hospital in Baghdad city, Iraq. Waste water from Al-Yarmouk hospital was used from site before treatment unit to collect environmental samples. The ability of producing biofilm at various pH levels was examined by microtiter plate and the prevalence of Alg D, Psl A and Pel A was determined by quantitative real time-polymerase chain reaction (qRT-PCR).

This study showed that the ability of clinical and environmental isolates to biofilm development was observed in 86.9% and 85.42% of clinical and environmental isolates, respectively. As well as, the environmental P. aeruginosa isolates showed the highest biofilm production at pH 7. Clinical isolates showed the highest genes expression of Alg D, Psl A and Pel A as compared to environmental isolates with pH change. In general, both clinical and environmental isolates formed biofilm and carried AlgD, PslA and PelA genes. Also, alkaline pH was favored for biofilm production.

There are very few studies done to find out the influence of environmental pH on production of biofilms and virulence genes expression in Pseudomonas aeruginosa. This study is unique as it has highlighted the influence of environmental pH on the ability of clinical and environmental isolates to biofilm development and genes expression.

This study aims to examine the individual and contextual predictors of managerial attitudes toward employees with chronic depression (EwCD) in the hospitality and tourism field, the relationship between managerial attitudes toward EwCD and levels of organizational citizenship behavior, and the mediating role of personality in this relationship.

Empirical data were collected through an online survey of 305 managers working in the hospitality and tourism industry in the USA. SmartPLS 3 software was used to conduct a partial least squares-structural equation modeling analysis.

Organizational and individual characteristics of managers, such as pressure to be productive in the workplace, previous experience with depression, levels of anxiety and personality characteristics, are strong predictors of attitudes toward employees with depression. Personality mediates the effect of managers’ attitudes toward organizational citizenship behavior.

The study provided support that managers who have experienced depression are more understanding of the needs of EwCD and, consequently, can reduce related stigma in the workplace. Likewise, open and agreeable managers who do not feel the constant pressure to showcase high performance and who score low on anxiety and high on organizational citizenship behavior can create a safe working environment free from prejudice and discrimination toward EwCD.

Examining depression in the hospitality and tourism industry becomes even more critical as mental health issues are increasing in the workplace. This research contributes to the hospitality and tourism literature, which seldom investigates managerial perspectives of mental illness and sheds light on the desirable managerial personality traits necessary for creating an inclusive workplace.

The purpose of this quantitative study was to assess the relationship between volunteer leadership competencies and stewardship action-taking experiences among Master Gardener (MG) and Master Watershed (MW) volunteers during the COVID-19 pandemic. We collected data from 1196 Penn State Extension MG and MW respondents. The mean summative score for the volunteer stewardship action-taking experience was 2.32 (SD = .79), and volunteer leadership competencies was 3.45 (SD = .60). The results of this study showed a significant moderate association between volunteer stewardship action-taking experiences and volunteer leader competencies (r = .34, p ≤ .001). Volunteer leadership competencies can explain approximately 11 % of the variation in volunteer stewardship action-taking experiences during the COVID-19 pandemic. The new knowledge that our research brings can significantly contribute to the practice in leadership teaching and learning of Extension organizations’ volunteers. Future leadership trainings on the enhancement of the MG and MW volunteer leaders’ stewardship action-taking capacity can help contribute to the greater good in their communities in a more confident and efficient manner. Further research should focus on identifying other factors that can affect MG and MW stewardship action-taking experiences, including the impact of the demographics and motivation.

The purpose of this paper is to provide insight on high-interest areas of research in defense-related logistics and supply chain management and opportunities for advancing theory and practice in this domain.

A panel of experts provided their insight to several questions oriented toward examining research opportunities and gaps in defense logistics research at the 2018 Academic Research Symposium of the Council of Supply Chain Management Professionals annual conference on September 30, 2018.

Three overarching themes emerged from the panel discussion for advancing theory and practice in defense logistics and supply chain management, which are developing a central repository, creating publication opportunities and integrating research practice and knowledge with the greater academic community.

Logistics and supply chain research is critical for advancing knowledge and practice in the military, as well as industrial settings. The intention in this manuscript is to provide scholars and practitioners in both settings greater awareness and potential avenues for developing synergies and processes for advancing logistics and supply chain research.

The purpose of this study was to explore how variables such as student demographics, pre-college leadership activities, and perceived pre-college parenting behaviors predict students’ leader self-efficacy (i.e., individuals’ confidence in themselves to lead and belief that others will support their leadership [Hannah et al., 2008]) in college and leader emergence (i.e., college-based leadership involvements [DeRue & Ashford, 2010]) in college. Undergraduate students (n = 420) at a large, public university in the Mid-Atlantic were surveyed to examine these relationships and data were analyzed using hierarchical and logistic regression, with appropriate controls and moderators. Findings included discovery that pre-college engagement with sports team positional leadership, community service, extracurriculars, and positive parenting behaviors, such as family routine and greater quality time with parents, predicted leader self-efficacy. Further, findings noted that pre-college community service, extracurriculars, peer tutoring and perceptions of parental quality time and proactive parenting predicted leader emergence. This study suggests that students’ leadership development is influenced by myriad systems across the lifespan and demonstrates that, as educators committed to student development, we must engage the full arc of our students’ leadership journeys and provide for intentional partnerships between higher education and the K-12 community.

The link between social interaction and entrepreneurial activity has attracted considerable attention in the entrepreneurship literature. In this study, we focus on individual cultural values, shaped by interactions in the social space, as they relate to opportunity evaluation, a cornerstone of the entrepreneurial process. We test our predictions in India, a non-Western society that has sustained one of the highest rates of entrepreneurial activity in the world. Our findings suggest that value orientation of high power distance is negatively associated with opportunity evaluation whereas uncertainty avoidance, collectivism, and femininity are positively associated with opportunity evaluation.