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排序方式: 共有62条查询结果,搜索用时 15 毫秒
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The aim of this paper is to present a reliability modeling and analysis of a two-unit system of a continuous casting (CC) plant. Real maintenance data of a steel production plant have been used for the purpose. Three types of failures were noted: repairable, replaceable and reconditioning/reinstallation. The two-unit system is operating in parallel, on full-reduced installed capacity. Upon the unit failure, an inspection is carried out to decide the type of maintenance task to be performed. Optimized reliability indices of the plant such as mean time to system failure, availability, expected busy periods of the repairman for various maintenance tasks, expected number of visits by the repairman, expected number of repairs, replacements and reconditioning/reinstallation are obtained. Semi-Markov processes and regenerative point techniques are used for the analysis. Profit incurred to the CC plant is also evaluated and related graphs are plotted to demonstrate the results. 相似文献
3.
Barrett Jentry S. Schachter Rachel E. Gilbert Danni Fuerst Mathew 《Early Childhood Education Journal》2022,50(3):385-397
Early Childhood Education Journal - Active engagement in music has numerous academic and social benefits for young children and music-making is included in many early childhood standards and... 相似文献
4.
Mary Mathew Nilanjana Bhaduri nee Chakraborty 《The Journal of High Technology Management Research》2012,23(1):71-81
In this hyper-competitive era, patents are an essential input to realizing sustainable competitive advantage. However, individual differences exist in patenting filing behavior and behaviors related to commercialization of patents. This study explores these behaviors in the context of three demographic variables. The demographic variables are patenting and commercialization experiences of inventors, age and sector. Further, aspirations of these inventors are assessed using external motivators of wealth, fame, and concern for societal welfare, and internal motivators such as pragmatism. The findings of this empirical study (n = 116) suggest that sector and age determine differences in personal internal motivators more than patent commercialization experience. Implications of the study are discussed. 相似文献
5.
In November 2012, 300 students came together in the Media School at Bournemouth University in the UK to report the US Presidential Election. Over the course of 10 days, students published 176 articles on a rolling news website, garnering more than 20,000 hits. On election night itself, students produced 10 h of live coverage on both TV and radio, airing 30 pre-recorded video packages and 35 pre-recorded radio packages. This experiential project adopted a so-called ‘live case’ methodology that encapsulated a high degree of application and a certain level of structure, which allowed for the ‘variety and uncertainty’ or reality to intervene. It also empowered and enabled students to reflect on and evaluate their individual experiences in light of their own learning styles. This paper will discuss the challenges and successes experienced during this experiential project, and will provide a nine-step guide on how others could replicate a similar project. 相似文献
6.
Bruce W Bailey Gabrielle LeCheminant Timothy Hope Mathew Bell Larry A Tucker 《Measurement in physical education and exercise science》2018,22(3):231-238
The study compared the agreement, internal consistency, and measurement stability of the GE iDXA, BOD POD, and InBody 720. Body composition of 43 men and 37 women (31.4 ± 10.7 years; 90% Caucasian and 10% other) was assessed in triplicate using each method over two different days. Mean percent body fat (% BF) of the participants was different for all three machines (27.6 ± 10.0% [GE iDXA)] 25.6 ± 10.4% [BOD POD], and 21.3 ± 10.6% [InBody 720]; p < .05). The coefficient of variation for same day repeated measures was 1.06% (GE iDXA), 3.29% (BOD POD), and 2.97% (InBody 720). The coefficient of variation for 2-day repeated measures was 1.81% (GE iDXA), 4.61% (BOD POD), and 4.24% (InBody 720). The difference between the GE iDXA and BOD POD was within acceptable variability, while the InBody 720 significantly underestimated % BF. The internal consistency was highest for the GE iDXA, followed by the InBody 720, and then the BOD POD. 相似文献
7.
The literature on trolling has viewed trolling as discrete instances of transgression undertaken by antagonistic individuals. We identify three main issues with current theorizations: diffuse definitions of “trolling,” blurred boundaries between trolling and other online anti-social behaviors, and the context dependency of trolling. To address these unresolved issues, we adopt a practice-based theoretical approach. Informed by this approach, we analyze trolling behaviors not as products of individuals' attitudes, values, and decisions, but rather as behaviors embedded within and occurring as part of social practices. Specifically, we conduct a practice-based theoretical analysis in a multi-site exploratory study involving online archival research and in-depth interviews with online community members. Based on this analysis, we propose that trolling be conceived as a constellation of three social practices: learning, assimilating, and transgressing. Also, we find that practices of trolling transgression can have a dual pro-social and anti-social impact in online communities. 相似文献
8.
AbstractAustralian football is an indigenous game codified in 1859. In Melbourne, the code’s birthplace, the game remained officially committed to the amateur ideal for over a half-century. Illegal player payments nonetheless became increasingly commonplace. Moreover, periodically rumours swirled of champion footballers taking bribes to ‘play dead’. By the early 1900s, the code’s leading competition, the Victorian Football League (VFL), was derided with the ‘shamateurism’ label. Following a sensational match-fixing investigation that resulted in two players receiving five-year bans, in 1911 the VFL expunged its rule prohibiting player payments. Was the timing merely coincidental or was the League’s historic switch to professionalism a deliberate countermeasure to redirect press attention, renew public confidence, and restore the game’s integrity? By consulting the League’s official records and contemporary press articles, this work examines the overlooked yet discernible linkages between rising match-fixing allegations and the VFL’s decision to eschew amateurism and embrace professionalism. It argues that Australian football offers an instructive historical perspective of a sporting body tackling mounting concerns over corruption, taking back the ascendency by amending its rules to better govern over dishonest players and duplicitous club officials, thereby growing its popularity and restoring public perception of its integrity in the process. 相似文献
9.
Mathew Hillier 《Distance Education》2018,39(1):110-121
AbstractThis paper explores a proposal for an off-line e-learning platform that will provide a bridge for digitally unconnected students and educators to join the contemporary information and communications technology (ICT) intensive world. Individual remote and unconnected learners face a chicken and egg problem for engagement with contemporary e-learning offerings. Without connectivity, remote learners have no way of engaging with now common ICT intensified learning materials that are intended to teach them how to engage in an ICT intensive world! The paper takes systems approach to developing a solution that will fit into the world we have, and not one we wish we had in terms of infrastructure, economics and skills available in remote and developing regions. Digital learning courses are placed onto a portable e-learning environment that is not reliant on a constant network connection to function but retains interactivity, analytics and the ability to synchronise data with an educational institution when a connection is found. 相似文献
10.
Joseph McBride Colin McArthur Alan Lovell Jim Hillier Joel E. Siegel Arnold Gassan 《Communication Booknotes Quarterly》2013,44(7):8-10
The American Film Institute Guide to College Courses in Film and Television (Washington, D.C.: Acropolis. Books, 1973—$5.95, paper) Joseph McBride, Orson Welles (192 pp.) Colin McArthur, Underworld USA (176 pp.) Alan Lovell and Jim Hillier, Studies in Documentary (176 pp.) Joel E. Siegel, Val Lewton: the Reality of Terror (176 pp.) Arnold Gassan's A Chronology of Photography (Light Impressions, Box 3012, Rochester, N.Y. 14614, 1972—$10.50/ 7.95) 相似文献