http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Testing Whether New Is Better Than Used of Specified Age Using Moments Inequalities
Ahmad, Ibrahim A.,Al-Wasel, Ibrahim A. The Korean Reliability Society 2002 International Journal of Reliability and Applicati Vol.3 No.1
The class of “new better than used of a specified age” is a large and practical class of life distributions. Its properties, applicability, and testing was discussed by Hollander, Park and Proschan (1986). Their test, while remaining the yardstick for this class, suffers from weak efficiency and weak power, especially for specified ages below the average age. Thus, it is beneficial to have an alternative testing procedure that would work better for early ages and still work well for later ages. This is exactly the subject of the current note. The test developed here is also simpler than that of Hollander, et. al. (1986).
Linear and Nonlinear Behavior of Steel Buildings with Different Bracing Systems
Sulaiman Al-Safi,Ibrahim Alameri,Waleed Abdullah Wasel,Amjad Basheer Al-kadasi 한국강구조학회 2021 International Journal of Steel Structures Vol.21 No.2
In this study, the eff ects of wind and seismic loads on 5, 10, and 15 story steel buildings with diff erent bracing systems were investigated. Linear static and nonlinear dynamic analyses were performed to assess the base shear, base moment, and story drift for all bracing systems. In addition, the cost analysis was taken into consideration. Five structural confi gurations were used: V-bracing, inverted V-bracing, one-story X-bracing, and multistory X-bracing. One of the most important features of a building is lateral stiff ness, which defi nes the resistance to displacement under seismic and wind loads, at the same time, the lateral stiff ness has a major impact on the natural time of the structure. Reducing displacement and cost in the structures indicates that the design is safe and economical. Therefore, the purpose of this article is to fi nd the best bracing system that causes minimum displacement, which indicates maximum lateral stiff ness. From this point of view, the behavior of bracing systems exposed to wind and seismic loads in buildings with diff erent stories was investigated. Static linear analysis results showed that the best bracing systems to reduce lateral displacement were the one-story X-bracing system for 5 and 15 story buildings and the V-bracing system for 10 story buildings. On the other hand, nonlinear dynamic analysis results showed that lateral displacement was minimum in unbraced, V-bracing, and one-story X-bracing systems for 5, 10, and 15 stories, respectively.
On Some New Stochastic Orders of Interest in Reliability Theory
Kayid, M.,El-Bassiouny, A.H.,Al-Wasel, I.A. The Korean Reliability Society 2007 International Journal of Reliability and Applicati Vol.8 No.1
The purpose of this paper is to study new notions of stochastic comparisons and ageing classes based on the total time on test transform order. We give relationships to other stochastic orders and aging classes given previously. Several preservation properties under the reliability operations of random minima and series system are given.