1,721,220 research outputs found
Effect of Cross Nanowall Surface on the Onset Time of Explosive Boiling: A Molecular Dynamics Study
No full textExplosive boiling is a fast-phase transition from an ultra-thin liquid film to vapor under an extremely high heat flux, which typically has been studied using the molecular dynamics simulation (MDS) method. The present MDS study investigated the explosive boiling of a liquid argon nanofilm over different solid copper surfaces with different nanowall patterns, including parallel and cross nanowalls. For each surface, atomic motion trajectories, the number of liquid and vapor argon atoms, heat flux, and, mainly, the onset time of explosive boiling were investigated. The simulation results indicated that explosive boiling occurs earlier on parallel and cross nanowall surfaces than on an ideally smooth surface, regardless of the topology and configuration of the nanowalls. Moreover, the results revealed that by using the cross nanowall surfaces, the onset time of explosive boiling decreased by 0.7–4% compared to the parallel nanowall surfaces. In addition, it was found that the onset time of explosive boiling strongly depends on the potential energy barrier and the movement space between nanowalls for both parallel and cross nanowall surfaces. Furthermore, the simulation findings showed that even though increasing the height of cross nanowalls increases the heat flux and temperature of the fluid argon domain, it does not necessarily result in a shorter onset time for explosive boiling. These findings demonstrate the capability of cross nanowall surfaces for explosive boiling, thereby being utilized in future surface design for thermal management applications
Supplemental Material - Despotic Leadership and Front-Line Employee Deviant Work Behaviors in Service Organizations: The Roles of Moral Disengagement and Moral Identity
No full textSupplemental Material for Despotic Leadership and Front-Line Employee Deviant Work Behaviors in Service Organizations: The Roles of Moral Disengagement and Moral Identity by Muhammad Waheed Akhtar, Thomas Garavan, Fauzia Syed, Chunhui Huo, Muzhar Javed, and Fergal O’Brien in Journal of Service Research</p
Supplemental Material - Despotic Leadership and Front-Line Employee Deviant Work Behaviors in Service Organizations: The Roles of Moral Disengagement and Moral Identity
No full textSupplemental Material for Despotic Leadership and Front-Line Employee Deviant Work Behaviors in Service Organizations: The Roles of Moral Disengagement and Moral Identity by Muhammad Waheed Akhtar, Thomas Garavan, Fauzia Syed, Chunhui Huo, Muzhar Javed, and Fergal O’Brien in Journal of Service Research</p
Supplemental Material - Efficacy and Outcome Measurement of iFactor/ABM/P-15 in Lumbar Spine Surgery: A Systematic Review
No full textSupplemental Material for Efficacy and Outcome Measurement of iFactor/ABM/P-15 in Lumbar Spine Surgery: A Systematic Review by Sazid Hasan, Malik Al-Jamal, Alex Miller, Devan O. Higginbotham, Daniel R. Cavazos, Muhammad Waheed, Ehab Saleh, and Scott A. McCarty in Global Spine Journal</p
Local heat-transfer coefficient estimation in cross-helix corrugated tubes under turbulent regime
No full textIn a wide variety of engineering applications, convection heat transfer enhancement plays a major role in reducing the heat exchanger's size and costs and increasing their efficiency. The passive methods for increasing convective heat transfer are the most interesting since they don't require any external power to achieve the desired enhancement. For this reason, this approach is preferred in the industrial sector of heat exchangers. For the enhancement of the performances of these apparatuses, in particular, the tubular ones used in the pharmaceutical, food, and chemical, the most adopted passive solution is the corrugation of their tube walls. Two pipes characterized by cross-helix corrugation have been experimentally analyzed both investigating the global heat transfer performance and studying the local heat transfer coefficient distribution to profoundly examine the thermal performance enhancement mechanisms of this passive technique. It has been observed that at Re = 16,000, the heat transfer rate in the smaller pitch tube is 18.18% higher than that in the larger pitch tube. The inverse heat conduction problem in the tube wall is addressed to achieve the local coefficient distribution method by using temperature readings collected from an infrared camera on the outer surface of the tube as the initial data
Transient analysis of an efficient solar assisted air-conditioning system for subtropical climate with various solar thermal collectors
No full textPerformance investigation of solar assisted desiccant integrated Maisotsenko cycle cooler in subtropical climate conditions
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Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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