Results 51 to 60 of about 2,880,469 (188)

Recurrent explosive behaviour of debt-to-GDP ratio [PDF]

open access: yes, 2016
In this paper the recurrent explosive behaviour of debt-to-GDP ratio is tested in three countries with a long fiscal record: Sweden, the UK and the US. The testing is based on the method developed by Phillips et al.
Bystrov, Victor, Mackewicz, Michał
core   +1 more source

Applicability limits of the DAX test in plastic bonded explosives

open access: yesDefence Technology
The Disc Acceleration eXperiment (DAX) is one of the most recent experimental methods of performance characterization of new energetic materials. A cylindrical explosive charge accelerates a thin metallic disc and its velocity is measured continuously ...
Martin Künzel   +2 more
doaj   +1 more source

Experimental Study and Damage Effect Analysis of Concrete Structures under the Combined Loadings of Penetration and Explosion

open access: yesShock and Vibration, 2020
The penetration-explosion warhead is one of the most effective weapons for use against concrete structures. In order to study the phenomena and results for concrete damage caused by the combined effects of penetration and explosion, field experiments ...
Hao Geng   +5 more
doaj   +1 more source

Acoustic analysis of starting jets in an anechoic chamber: implications for volcano monitoring

open access: yesScientific Reports, 2020
Explosive volcanic eruptions are associated with a plethora of geophysical signals. Among them, acoustic signals provide ample information about eruptive dynamics and are widely used for monitoring purposes.
J. J. Peña Fernández   +3 more
doaj   +1 more source

Effects of Obstacle Separation Distance on Gas Explosions: The Influence of Obstacle Blockage Ratio

open access: yesProcedia Engineering, 2014
AbstractObstacle separation distance (pitch) has received little systematic study in the literature. Either too large or small spacing between obstacles would lead to lesser explosion severity. Therefore, an optimum value of the pitch that would produce the highest flame acceleration and hence overpressure is needed.
Na'Inna, AM, Phylaktou, HN, Andrews, GE
openaire   +2 more sources

Simulating properties of the likelihood ratio test for a unit root in an explosive second order autoregression [PDF]

open access: yes
This paper provides a means of accurately simulating explosive autoregressive processes, and uses this method to analyse the distribution of the likelihood ratio test statistic for an explosive second order autoregressive process.
Bent Nielsen, J. James Reade
core  

Analysis of co-explosive processes [PDF]

open access: yes
A vector autoregressive model allowing for unit roots as well as explosive characteristic roots is developed. The Granger-Johansen representation shows that this results in processes with two common features: a random walk and an explosively growing ...
Bent Nielsen
core  

Analysis of explosion resistance of the blast wall with negative Poisson’s ratio structure

open access: yesBaozha yu Chongji
To improve the explosion resistance of the blast wall, it is proposed to combine the negative Poisson’s ratio structure with ultra-high toughness cementitious composites (UHTCC), Through a combination of the explosion experiment and numerical simulation,
Qianhui WANG   +4 more
doaj   +1 more source

Explosive Behavior in the 1990s Nasdaq: When Did Exuberance Escalate Asset Values? [PDF]

open access: yes
A recursive test procedure is suggested that provides a mechanism for testing explosive behavior, date-stamping the origination and collapse of economic exuberance, and providing valid confidence intervals for explosive growth rates.
Jun Yu, Yangru Wu, Peter C.B. Phillips
core  

Influence of TiH2/PTFE mass ratio on the detonation performance of RDX-Based active shell thermobaric explosives

open access: yesDefence Technology
To investigate the coupling mechanisms of detonation energy release between the TiH2/PTFE active shell and RDX explosive, an RDX-based active shell thermobaric explosive containing TiH2/PTFE powders was prepared.
Zihan Chen   +4 more
doaj   +1 more source

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