Full-scale experimental testing of Structural Concrete Insulated Panels (SCIPs)

Author(s):  
Mustafa Mashal ◽  
Karma Gurung ◽  
Mahesh Acharya

<p>Structural Concrete Insulated Panels (SCIPs) are relatively new addition to construction industry. SCIPs have previously been used in construction of residential, commercial, and military structures. Despite applications overseas and a few in the United States, SCIPs have still remained a relatively unknown construction methodology among structural engineers in the United States and other countries. SCIPs offer advantages such as fast construction, lightweight, thermal insulation, sound insulation, cost-efficiency, and good seismic and wind performance. These advantages make SCIPs a competitive construction methodology compared to traditional wood and masonry construction. In this study, the SCIP construction is introduced, followed by experimental results from full-scale testing of 14 SCIPs slab and wall panels under gravity and lateral loads. 11 full-scale slabs, ranging from 3-5.5 m (10-18 ft.) span, are tested under four-point bending tests in accordance with ASTM standards. The strength, ductility, and failure pattern of the panels are discussed. In addition, the adequacy of splicing details for SCIP slab panels are investigated experimentally using three 5.5 m (18 ft.) slab panels. Three full-scale cantilever wall panels are tested under quasi-static cyclic loading in accordance with ACI seismic testing load protocols. The wall-to-footing connection is a socket connection. This is a novel type of connection for precast wall connection in seismic regions. Experimental results and observations from testing of slab and wall panels showed good strength, ductility, and performance of the specimens.</p>

Author(s):  
Norman Schofield

A key concept of social choice is the idea of the Condorcet point or core. For example, consider a voting game with four participants so any three will win. If voters have Euclidean preferences, then the point at the center will be unbeaten. Earlier spatial models of social choice focused on deterministic voter choice. However, it is clear that voter choice is intrinsically stochastic. This chapter employs a stochastic model based on multinomial logit to examine whether parties in electoral competition tend to converge toward the electoral center or respond to activist pressure to adopt more polarized policies. The chapter discusses experimental results of the idea of the core explores empirical analyses of elections in Israel and the United States.


2010 ◽  
Vol 2010 (15) ◽  
pp. 2236-2240
Author(s):  
Edward T. Furlong ◽  
James L. Gray ◽  
David M. Quanrud ◽  
Sondra S. Teske ◽  
Kathleen Esposito ◽  
...  

2016 ◽  
Vol 49 (6) ◽  
pp. 792-797
Author(s):  
Salaheldin F. Bakhiet ◽  
Ismael S. Albursan ◽  
Mohammad F. Al Qudah ◽  
Adel S. Abduljabbar ◽  
Suliman S. Aljomaa ◽  
...  

SummaryThe sex differences on the WISC-III are reported for the thirteen subtests, the Verbal and Performance IQs, the four Index IQs and the Full Scale IQs in Sudan and the United States. The sex differences are closely similar in the two samples with a correlation of 0.878 (p<0.001) for the thirteen subtests. Males obtained significantly higher Full Scale IQs in the two samples of 0.23d and 0.11d, respectively.


1924 ◽  
Vol 28 (162) ◽  
pp. 327-448 ◽  
Author(s):  
C. P. Burgess ◽  
J. C. Hunsaker ◽  
S. Truscott

The rigid airship in its modern form is a German conception, but the nature of the strength calculations employed by the Germans has been a carefully guarded secret. When the U.S. Navy undertook the construction of rigid airships it was arranged to have one ship designed and built in the United States, the ZR. 1, and one ship designed and built in England, R.38 (ZR.2). Lacking practical information and experience, fundamental theory had to be resorted to in undertaking the design of ZR.i, and all available information had to be analysed,, compared and, so far as possible, tested. After the unfortunate loss of R.38 the calculations for ZR. 1 were reviewed and additional calculations and investigations undertaken.The authors of this paper, under the direction of Rear-Admiral W. A. Moffett, Chief of the Bureau of Aeronautics, U.S. Navy Department, have been charged with the design of ZR.i and have had in the course of duty to make, or cause to be made, such studies and investigations as would assist in analysing and simplifying the problem as much as was possible in advance of full-scale experiments in flight.


1934 ◽  
Vol 38 (278) ◽  
pp. 108-137 ◽  
Author(s):  
W. J. Duncan

The subject of tail buffeting first came into prominence in this country early in 1931 when the Accidents Investigation Sub-Committee of the Aeronautical Research Committee issued their report on the accident to a Junkers monoplane at Meopham, Kent. The Sub-Committee gave it as their opinion that tail buffeting was the probable primary cause of this accident, and recommended that the phenomenon should be investigated. At this time tail buffeting (Leitwerkschutteln) was quite well known in Germany, where the low-wing monoplane, which is peculiarly susceptible to this trouble, was a popular type of aircraft; and some full-scale experiments on the subject had already been made by the Deutsche Versuchsanstalt fiir Luftfahrt. The findings of the Accidents Investigation Sub-Committee caused an intensive study of buffeting to be undertaken both in Germany and in this country, and the enquiry was also taken up in the United States at a later date. As a result of these studies tail buffeting is now quite well understood, and methods for its avoidance have been established.


Author(s):  
Heidi Hardt

As a fourth empirical chapter, Chapter 6 identifies the sources that motivate elites to share their knowledge of strategic errors. Employing a survey experiment on elites, the chapter presents hypotheses about the impact of three different sources: the United States, NATO's secretariat and international media. Surprisingly, experimental results indicate that NATO elites are less likely to record or share knowledge of a strategic error if an action is framed as such by the United States. Results also demonstrate that NATO elites are slightly more likely to record if the action is framed as such an error by the secretariat. The chapter concludes with a discussion of why a powerful state would counter-intuitively have a dampening effect on an international organization’s capacity for retaining knowledge across time and space. Findings support the book’s argument that the secretariat plays a critical role in facilitating the development of institutional memory about past strategic errors.


Author(s):  
Alexander Pelaez ◽  
Deb Sledgianowski ◽  
Steven Petra ◽  
Jianbing Zhu ◽  
Nooshin Nejati

This paper proposes and tests a methodology for the development of a simulation for individual tax returns in the United States, enabling students of taxation and interested parties to examine changes to the tax code, examine the effects of tax planning alternatives, and conduct repeated experimental testing on the tax return data.  The simulation produced data for 147,000 tax returns, representing approximately 1% of the population of filed tax returns as noted by the IRS/SOI.  We present the methodology on how we created the simulation and compare the tax returns of the simulation to the measures provided by the IRS. Our simulated return data very closely matched the number and combined dollar value of the IRS/SOI summary data at the adjusted gross income (AGI), state, and filing status levels.


1925 ◽  
Vol 29 (175) ◽  
pp. 299-332
Author(s):  
D. W. Taylor

Aeronautics now covers a large field. The bibliography alone, compiled and published annually by the United States National Advisory Committee for Aeronautics, requires something like two hundred pages of a book seven inches by ten inches. Needless to say, I am not undertaking to review the whole field.Owing to the difficulties of conducting free flight tests of performance and the fact that we cannot afford to make many mistakes in an appliance whose operation involves the risk of human life, it is peculiarly desirable that we may be able to predict the performance of the completed airplane from small-scale experiments; and probably in no other branch of mechanical science have we at present so many research laboratories.


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