Initial failure and rational structure of reinforcement in multilayer hollow semireinforced shells

1989 ◽  
Vol 25 (3) ◽  
pp. 343-351
Author(s):  
Yu. V. Nemirovskii ◽  
S. G. Mezentsev
Keyword(s):  
Rational Structure ◽  
Initial Failure

Republican conception of liberty in early republican Turkey and its contemporary implications

2015 ◽  
Vol 42 (4-5) ◽  
pp. 429-439
Author(s):  
Boğaç Erozan
Keyword(s):  
Problem Solving ◽  
Ample Evidence ◽  
Republican Period ◽  
Initial Failure ◽  
The Past ◽  
Political Problem ◽  
The Republic ◽  
Early Republican

Established in 1923, Turkey has been a republic without a dominant republican conception of liberty. A chance to install such a conception was missed in the early republican period and never recaptured. The republic was unable to get rid of vestiges of the authoritarian tradition of the past. Centuries-old authoritarian tradition persisted well into the recent and the contemporary periods. Presenting ample evidence, the article underlines the weight of history and the legacy of authoritarian mentality that promoted the use of authority, not liberty, in political problem-solving. The initial failure to abandon an authoritarian problem-solving approach proved fateful for the chances of the deepening of democracy in Turkey.

Angioplasty and Stenting for Intracranial Atherosclerotic Stenosis With Nitinol Stent: Factors Affecting Technical Success and Patient Safety

2011 ◽  
Vol 70 (suppl_1) ◽  
pp. ons104-ons113 ◽  
Author(s):  
Simon Chun Ho Yu ◽  
Thomas Wai Hong Leung ◽  
Esther Hiu Yee Hung ◽  
Kwok Tung Lee ◽  
Lawrence Ka Sing Wong
Keyword(s):  
Patient Safety ◽  
Failure Rate ◽  
Balloon Catheter ◽  
Technical Failure ◽  
Related Factors ◽  
End Points ◽  
Technical Problems ◽  
Vascular Morphology ◽  
Initial Failure ◽  
Angioplasty And Stenting

Abstract BACKGROUND: Angioplasty and stenting using nitinol stents is a recognized treatment option for intracranial atherosclerosis. OBJECTIVE: To identify procedure-related factors that may affect patient safety and technical outcome. METHODS: In this prospective study of 57 consecutive patients, the primary end points were intraprocedural technical problems, periprocedure morbidity, and complications. Major periprocedure complication was defined as all stroke or death at 30 days. Technical failure was defined as the inability to complete the procedure because of technical or safety problems. Procedure failure was defined as a procedure outcome of technical failure or major periprocedure complication. Secondary end points were procedure-related factors that may affect patient safety and technical outcome. RESULTS: Procedure failure rate was 12.3% (7/57) (major periprocedure complication rate, 5.3% [3/57]; technical failure rate, 7% [4/57]). Initial failure in tracking of balloon or stent occurred in 20 patients, other technical problems occurred in 11 patients, including kinking or trapping of balloon catheter (2 cases), difficulty in unsheathing of stent (3 cases), forward migration of stent during deployment (4 cases), trapping of nose cone after stent deployment (1 case), fracture of delivery system (2 cases), and guidewire fracture (1 case). Unfavorable vascular morphology signified by the presence of 2 or more reverse curves along the access path was found to associate with initial failure in the tracking of instruments (OR = ∞), and occurrence of other technical problems (OR = 25). CONCLUSION: Procedure-related factors could be identified and lead to improvements in patient safety and technical outcome. Tortuous vascular morphology is a key factor to be overcome.

Probability of Initial Failure for Spring Operated Relief Valves

2011 ◽  
Author(s):  
Julia V. Bukowski ◽  
Robert E. Gross ◽  
William M. Goble
Keyword(s):  
Failure Mode ◽  
Pressure Vessel ◽  
Convincing Evidence ◽  
Material Composition ◽  
Safety Standards ◽  
Initial Failure ◽  
Safety Integrity Level ◽  
Average Probability ◽  
Section Viii

We present clear and convincing evidence that, for new spring operated relief valves (SORV) that are not proof tested by the user shortly before installation, there is a non-trivial probability that the SORV will be installed in the fail-to-open (stuck shut) failure mode. Using the results of over 4800 new ASME Boiler and Pressure Vessel Code Section VIII SORV proof tests, we estimate the probability of initial failure (PIF) due to manufacturer/assembly anomalies, as well as PIF due to in-storage aging of SORV based on their material composition. We indicate how PIF can be reduced by various preinstallation activities that may be undertaken by the user. We show how to compute values of PIF to be used in calculating the average probability of fail danger (PFDavg) (as required by IEC61508 and similar safety standards in order to determine a safety integrity level (SIL)) which accounts for both the SORV material composition and the pre-installation activities undertaken. For four typical SORV of different material compositions we show how pre-installation activities influence the achievable SIL. We discuss the implication of these findings for estimating PIF for used (previously installed) SORV. We close with recommendations to further address PIF.

The Influence of the Leading Wheel Structural Change on Stress of Multi-Rope Friction Hoist

2013 ◽  
Vol 670 ◽  
pp. 48-53 ◽  
Author(s):  
Guang Lin Zhou ◽  
W.J. Chu
Keyword(s):  
Finite Element ◽  
Structural Change ◽  
Service Life ◽  
Working Conditions ◽  
Weld Bead ◽  
Rational Structure ◽  
Open Problems ◽  
Finite Element Software ◽  
Stress Fluctuation

To avoid the open problems of the leading wheel and get a more rational structure, the paper uses PRO / E and the finite element software to analyze the leading wheel of JKM-3.25/4 multi-rope friction hoist. The results show that in the leading wheel the rib plates between the channel steel and wheel hub are removed or added the same ones will have little effect on the overall force situation, and only affect the stress of the weld bead. To solve the problem of open weld of rib plates, can consider the rib plates to be removed. When the radial angle between support wheel and drum is bigger than 6°, the overall force of the leading wheel is affected seriously. But when the radial angle is 5°, the amplitude of stress fluctuation is the minimum, which can improve the leading wheel working conditions and increase the service life of the leading wheel. Therefore the suggestion is to take the radial angle of 5° when to design the new multi-rope hoist. Study conclusions provide the theoretical supports for the leading wheel of multi-rope friction design and technical renovation.

Democracy, Transparency and the Apparent Demise of the Treaty Establishing a Constitution for Europe

2006 ◽  
Vol 8 ◽  
pp. 9-35
Author(s):  
Cheryl Saunders
Keyword(s):  
Initial Failure ◽  
Constitution Making

The failure of any constitution-making process is deeply disappointing for some and a source of satisfaction for others. The satisfaction of the latter may be short, or at least not long-lived, however, if it subsequently turns out that the changes were necessary, or even demonstrably useful. Initial failure in a constitutional project is relatively common, for reasons that range from the difficulty of the process to the novelty and perceived significance of the issues at stake. Experience suggests, however, that, at least where the rationale for the constitutional proposals was sufficiently soundly based, failure may not be the end of the story. It follows that it makes sense to take stock after such an event: to identify what is lost that was of value; to determine what, if anything, might be improved, if another constitutional moment presents itself; and to consider whether constitutionalisation should be attempted again, or whether other mechanisms can be used instead.

Rational Structure‐Based Design of Fluorescent Probes for Amyloid Folds

ChemBioChem ◽  
2019 ◽  
Vol 20 (9) ◽  
pp. 1161-1166 ◽  
Author(s):  
Julien Orts ◽  
Marielle Aulikki Wälti ◽  
Dhiman Ghosh ◽  
Silvia Campioni ◽  
Sven J. Saupe ◽  
...  
Keyword(s):  
Fluorescent Probes ◽  
Rational Structure

scholarly journals Study on Initial Failure in Tension of Glass Woven Fabric/Epoxy Composite with Functional Interphase

2004 ◽  
Vol 30 (1) ◽  
pp. 16-23
Author(s):  
Kenichi SUGIMOTO ◽  
Toshiko OSADA ◽  
Nobuyoshi KAJIOKA ◽  
Asami NAKAI ◽  
Hiroyuki HAMADA
Keyword(s):  
Epoxy Composite ◽  
Woven Fabric ◽  
Initial Failure

scholarly journals Development of a system of indices of the efficacy of the performance of general outpatient department of "Children's Clinical Medical Center" of the city of Chita

2019 ◽  
Vol 19 (3) ◽  
pp. 163-165
Author(s):  
Tatyana A. Chuprova ◽  
G. I. Bisharova
Keyword(s):  
Strategic Management ◽  
Health Facility ◽  
Balanced Scorecard ◽  
Medical Center ◽  
Training And Development ◽  
Rational Structure ◽  
Strategic Objectives ◽  
The Balanced Scorecard ◽  
The World ◽  
The City

One of the most effective and popular tools in the world of strategic management of the organization is the Balanced Scorecard, which increases the capability to achieve the strategic objectives and provides an integrated work of the organization. There is considered the classical rational structure of the working activity of the department in the context of prospects for 4 - finances, cases, internal processes, training and development. There are developed key indices of the efficacy and established their aimed values. The developed system of indices of the efficacy of the work of the Department will allow to detail the aims of operational and personal levels, and as a consequence to improve the efficacy of the management of health facility.

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