Clusters and Discriminant Functions on Property Crime in Seoul

Abstract This paper evaluates the effect on crime of creating a fundamental modern-day institution: centralized professional police forces tasked with preventing crime. We study the 1829 formation of the London Metropolitan Police – the first professional force worldwide. Using newly digitized and geocoded crime and police data together with difference-in-differences and pre-post designs, we find evidence of a significant reduction in violent crimes (despite the possibility of off-setting increases in clearance and reporting rates). In contrast, a reduction in property crime is not visible

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Crime Victimization among Injection Drug Users

Journal of Drug Issues ◽

10.1177/002204269702700406 ◽

1997 ◽

Vol 27 (4) ◽

pp. 771-783 ◽

Cited By ~ 19

Author(s):

Karen McElrath ◽

Dale D. Chitwood ◽

Mary Comerford

Keyword(s):

Injection Drug Users ◽

Drug Users ◽

Crack Cocaine ◽

Property Crime ◽

Routine Activity Theory ◽

Injection Drug ◽

Routine Activity ◽

Crime Victimization ◽

Victimization Risk ◽

Lifestyle Activities

This study uses routine activity theory to examine violent and property crime victimization among a sample of 308 injection drug users (IDUs). We estimate prevalence rates and identify factors that contribute to the victimization of IDUs. The findings suggest that victimization rates of IDUs were much higher than rates found for the general urban population. Generally, crime involvement did not contribute significantly to victimization risk. Use of crack-cocaine increased the likelihood of property crime victimization whereas heroin use decreased the probability of both violent and property crime victimization. Other drug lifestyle activities (i.e., waiting in uncomfortable situations to buy drugs) also affected victimization risk Finally, the results suggest that victimization differed by age and by gender, despite controls for drug use and drug lifestyle activities. Explanations for these results are offered.

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Using the method of canonical discriminant functions for a qualitative assessment of the response degree of producing wells to water injection during the development of carbonate deposits

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/1064/1/012069 ◽

2021 ◽

Vol 1064 (1) ◽

pp. 012069

Author(s):

V V Mukhametshin ◽

L S Kuleshova

Keyword(s):

Water Injection ◽

Qualitative Assessment ◽

Discriminant Functions ◽

Carbonate Deposits

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