A new technique for the global property of the vibro-impact system at the impact instant

Author(s):  
Bochen Wang ◽  
Liang Wang ◽  
Jiahui Peng ◽  
Xiaole Yue ◽  
Wei Xu
Author(s):  
O. Knotek ◽  
B. Bosserhoff ◽  
A. Schrey ◽  
T. Leyendecker ◽  
O. Lemmer ◽  
...  

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Riccardo Cesari ◽  
Leandro D’Aurizio

Abstract Following the increasing necessity of quantitative measures for the impact of natural catastrophes, this paper proposes a new technique for a probabilistic assessment of seismic risk by using publicly available data on the earthquakes that have occurred in Italy. We implement an insurance-oriented methodology to produce a new map of the seismic risk and to evaluate, under various hypotheses, the costs of insuring all the Italian housing units against it. The model is compared with two main privately developed models, well known in the reinsurance industry, providing fairly similar results.


2020 ◽  
Vol 9 (3) ◽  
pp. 150 ◽  
Author(s):  
Peng Chen ◽  
Justin Kurland

“Strike Hard” is an enhanced law-enforcement strategy in China that aims to suppress crime, but measurement of the crime-reducing effect and potential changes in the spatiotemporal concentration of crime associated with “Strike Hard” remain unknown. This paper seeks to examine the impact, if any, of “Strike Hard” on the spatiotemporal clustering of burglary incidents. Two and half years of residential burglary incidents from Chaoyang, Beijing are used to examine repeat and near-repeat burglary incidents before, during, and after the “Strike Hard” intervention and a new technique that enables the comparison of repeat and near repeat patterns across different temporal periods is introduced to achieve this. The results demonstrate the intervention disrupted the repeat pattern during the “Strike Hard” period reducing the observed ratio of single-day repeat burglaries by 155%; however, these same single-day repeat burglary events increased by 41% after the cessation of the intervention. Findings with respect to near repeats are less remarkable with nominal evidence to support that the intervention produced a significant decrease, but coupled with other results, suggest that spatiotemporal displacement may have been an undesired by-product of “Strike Hard”. This study from a non-Western setting provides further evidence of the generalizability of findings related to repeat and near repeat patterns of burglary and further highlights the limited preventative effect that the “Strike Hard” enhanced law enforcement campaign had on burglary.


2001 ◽  
Vol 31 (6) ◽  
pp. 965-968 ◽  
Author(s):  
Ken Vallens ◽  
Eric Bescher ◽  
J.D Mackenzie ◽  
Ed Rice

2005 ◽  
Vol 32 (2) ◽  
pp. 107-109 ◽  
Author(s):  
Peter M. Vishton

This article describes and evaluates a new technique for teaching students to interpret studies of patients with brain injuries. This technique asks students to consider how knives and blenders lose specific functionality when they are damaged. This approach better prepares students to make proper inferences from behavioral deficits observed after brain injury, specifically with reference to single and double dissociation. Significantly improved performance on multiple-choice and identification questions included in midterm examinations suggests that the impact of these thought experiments was substantive and long lasting.


1992 ◽  
Vol 54-55 ◽  
pp. 102-107 ◽  
Author(s):  
O. Knotek ◽  
B. Bosserhoff ◽  
A. Schrey ◽  
T. Leyendecker ◽  
O. Lemmer ◽  
...  

1936 ◽  
Vol 2 (1-2) ◽  
pp. 97-105
Author(s):  
O. G. S. Crawford

The impact of a new technique upon a branch of science continues to be felt long after the first shock. Air-photography revolutionized the study of prehistoric fields and the excavation of individual sites, such as Caistor-by-Norwich, Woodhenge Arminghall, and the Ditchley Roman villa. It will, in the near future, revolutionize the study of distributions, itself quite a new subject. In my book Man and his Past (Oxford, 1921, pp. 128–153). I pointed out that the distribution-pattern of ‘loose finds,’ such as beakers and flat bronze axes, was free from the defect inherent in the distribution-pattern of objects fixed in the soil, such as megaliths, which may be removed by agricultural operations. ‘Camps’ and barrows are subject to the same limitations as indicators of population-areas; they may be destroyed by agriculture—prehistoric, mediaeval and modern; and there are many instances where such destruction is known to have occurred. They can both, however, be recovered by air-photography, which thereby rectifies the distortion of the distribution-map based solely on ground-work.


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