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Novel pin jointed moment connection for cold-formed steel trusses
Chris Mathison,Krishanu Roy,G. Charles Clifton,Amin Ahmadi,Rehan Masood,James B.P. Lim 국제구조공학회 2019 Steel and Composite Structures, An International J Vol.31 No.5
Portal frame structures, made up of cold-formed steel trusses, are increasingly being used for lightweight building construction. A novel pin-jointed moment connector, called the Howick Rivet Connector (HRC), was developed and tested previously in T-joints and truss assemblage to determine its reliable strength, stiffness and moment resisting capacity. This paper presents an experimental study on the HRC, in moment resisting cold-formed steel trusses. The connection method is devised where intersecting truss members are confined by a gusset connected by HRCs to create a rigid moment connection. In total, three large scale experiments were conducted to determine the elastic capacity and cyclic behaviour of the gusseted truss moment connection comprising HRC connectors. Theoretical failure loads were also calculated and compared against the experimental failure loads. Results show that the HRCs work effectively at carrying high shear loads between the members of the truss, enabling rigid behaviour to be developed and giving elastic behaviour without tilting up to a defined yield point. An extended gusset connection has been proposed to maximize the moment carrying capacity in a truss knee connection using the HRCs, in which they are aligned around the perimeter of the gusset to maximize the moment capacity and to increase the stability of the truss knee joint.
Urban Meyer Needs an Image Repair Coach
Chris Hanna,James T. Morton 글로벌지식마케팅경영학회 2020 Journal of Global Sport Management Vol.5 No.2
Ohio State University football coach Urban Meyer became the subject of controversy when it was reported that one of his assistant coaches, Zach Smith, allegedly abused his spouse. Scrutiny followed the Smith reports as the media and public tried to understand Meyer’s interactions with Smith, knowledge of Smith’s conduct, proper reporting of that conduct, and handling of public relations prior to the 2018 college football season. Image repair theory (also known as image restoration theory) is utilized in this case study to assess Meyer’s public relations tactics in a time of crisis from July 24, 2018 to Sept. 22, 2018. This longitudinal approach specifically focused on a coach’s image repair quotes provides a unique contribution to the literature. Meyer used four of the five major image repair strategies noted by Benoit, more heavily leaning on reducing offensiveness of the event and mortification with the passing of time.
Kamil Pufal,Alexander Lawson,James Hodson,Mansoor Bangash,Jaimin Patel,Chris Weston,Thomas van Gulik,Bobby VM Dasari 한국간담췌외과학회 2021 Annals of hepato-biliary-pancreatic surgery Vol.25 No.2
Backgrounds/Aims: Post-hepatectomy liver failure (PHLF) is a serious complication following liver resection, with limited treatment options, and is associated with high mortality. There is a need to evaluate the role of systems that support the function of the liver after PHLF. Aims: The aim of this study was to review the literature and summarize the role of liver support systems (LSS) in the management of PHLF. Publications of interest were identified using systematically designed searches. Following screening, data from the relevant publications was extracted, and pooled where possible. Findings: Systematic review identified nine studies, which used either Plasma Exchange (PE) or Molecular Adsorbent Recirculating System (MARS) as LSS after PHLF. Across all studies, the pooled 90-day mortality rate was 38% (95% CI: 9-70%). However, there was substantial heterogeneity, likely since studies used a variety of definitions for PHLF, and had different selection criteria for patient eligibility for LSS treatment. Conclusions: The current evidence is insufficient to recommend LSS for the routine management of severe PHLF, with the current literature consisting of only a limited number of studies. There is a definite need for larger, multicenter, prospective studies, evaluating the conventional and newer modalities of support systems, with a view to improve the outcomes in this group of patients.
The quick and the dead: when reaction beats intention
Welchman, Andrew E.,Stanley, James,Schomers, Malte R.,Miall, R. Chris,Bü,lthoff, Heinrich H. The Royal Society 2010 Proceedings, Biological sciences Vol.277 No.1688
<P>Everyday behaviour involves a trade-off between planned actions and reaction to environmental events. Evidence from neurophysiology, neurology and functional brain imaging suggests different neural bases for the control of different movement types. Here we develop a behavioural paradigm to test movement dynamics for intentional versus reaction movements and provide evidence for a ‘reactive advantage’ in movement execution, whereby the same action is executed faster in reaction to an opponent. We placed pairs of participants in competition with each other to make a series of button presses. Within-subject analysis of movement times revealed a 10 per cent benefit for reactive actions. This was maintained when opponents performed dissimilar actions, and when participants competed against a computer, suggesting that the effect is not related to facilitation produced by action observation. Rather, faster ballistic movements may be a general property of reactive motor control, potentially providing a useful means of promoting survival.</P>
Chandrasekaran, Sundaram,Bowen, Chris,Roscow, James,Zhang, Yan,Dang, Dinh Khoi,Kim, Eui Jung,Misra, R.D.K.,Deng, Libo,Chung, Jin Suk,Hur, Seung Hyun Elsevier 2019 Physics reports Vol.792 No.-
<P><B>Abstract</B></P> <P>This comprehensive review focuses on recent advances in energy harvesting of micro-scale and nano-scale generators based on piezoelectric and triboelectric effects. The development of flexible and hybrid devices for a variety of energy harvesting applications are systematically reviewed. A fundamental understanding of the important parameters that determine the performance of piezoelectric, triboelectric and hybrid devices are summarized. Current research directions being explored and the emerging factors to improve harvester functionality and advance progress in achieving high performance and durable energy conversion are provided. Investigations with regard to integrating flexible matrices and optimizing the composition of the piezoelectric and triboelectric materials are examined to enhance device performance and improve cost-effectiveness for the commercial arena. Finally, future research trends, emerging device structures and novel materials in view of imminent developments and harvesting applications are presented.</P>
Rotation Implementation of a Circular Cylinder in Incompressible Flow via Staggered Grid Approach
Mingqing Xiao,Yuan Lin,James H. Myatt,R. Chris Camphouse,Siva S. Banda 한국전산응용수학회 2006 Journal of applied mathematics & informatics Vol.22 No.1-2
In this paper, we present a finite difference method for the implementation of the rotation of a circular cylinder in the incompressible flow field by solving the two-dimensional unsteady Navier-Stokes equations. The approach is to use staggered grid method so that the accuracy and order of convergence of the associated algorithms can be maintained. The proposed method is easy to be implemented and is effective. A set of simulations for the flow dynamics is provided to show the computational results.
Risk Factors for Poorer Breast Cancer Outcomes in Residents of Remote Areas of Australia
Roder, David,Zorbas, Helen,Kollias, James,Pyke, Chris,Walters, David,Campbell, Ian,Taylor, Corey,Webster, Fleur Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.1
To investigate patient, cancer and treatment characteristics in females with breast cancer from more remote areas of Australia, to better understand reasons for their poorer outcomes, bi-variable and multivariable analyses were undertaken using the National Breast Cancer Audit database of the Society of Breast Surgeons of Australia and New Zealand. Results indicated that patients from more remote areas were more likely to be of lower socio-economic status and be treated in earlier diagnostic epochs and at inner regional and remote rather than major city centres. They were also more likely to be treated by low case load surgeons, although this finding was only of marginal statistical significance in multivariable analysis (p=0.074). Patients from more remote areas were less likely than those from major cities to be treated by breast conserving surgery, as opposed to mastectomy, and less likely to have adjuvant radiotherapy when having breast conserving surgery. They had a higher rate of adjuvant chemotherapy. Further monitoring will be important to determine whether breast conserving surgery and adjuvant radiotherapy utilization increase in rural patients following the introduction of regional cancer centres recently funded to improve service access in these areas.