Further rejection of the cybercrime hypothesis

We recently rejected the hypothesis that increases in cybercrime may have caused the international crime drop. Critics subsequently argued that offenders switched from physical crime to cybercrime in recent years, and that lifestyle changes due to ‘leisure IT’ may have caused the international crime drop. Here we explain how the critics misrepresented our argument and do not appear to introduce anything new

Develop a land use-peak runoff classification system for highway engineering purposes

The author has identified the following significant results. Based on the detail study of the Sunkhaze Stream Watershed, it is believed that good detailed drainage studies can be derived from repetitive ERTS imagery. Land use maps tailored to hydrologic study can be prepared from ERTS imagery. Significant changes in the Sunkhaze Stream and Otter Stream Watersheds at spring flood conditions have given important information on the causes for flooding in the town of Bradley

Multidisciplinary analysis for highway engineering purposes

There are no author-identified significant results in this report

Employment Contract Matching: An Analysis of Dual Earner Couples and Working Households

We explore the significance of intra-couple and intra -household influences on three broad types of employment contracts: self-employment, performance related pay, and salaried employment. Individuals may pool income risk with their partners by holding a diversified portfolio of employment contracts, introducing intra-household risk pooling. Alternatively, employment contract matching may occur whereby individuals within couples or households are employed under similar contracts. Our empirical analysis, based on cross-section data drawn from the British Family Expenditure Surveys 1996 to 2000, provides evidence of employment contract matching both within dual earner couples and, to a lesser extent, in the context of working household members.Dual Earner Couples; Employment Contract Matching; Self-employment; Assortative Mating

Five tests for a theory of the crime drop

Many studies have sought to explain the major crime declines experienced in most advanced countries. Key hypotheses relate to: lead poisoning; abortion legalization; drug markets; demographics; policing numbers and strategies; imprisonment; strong economies; the death penalty; gun control; gun concealment; immigration; consumer confidence; the civilizing process, and; improved security. This paper outlines five tests that a hypothesis should pass to be considered further. It finds that fourteen of the fifteen hypotheses fail two or more tests. The security hypothesis appears to pass the tests, and thereby pave the way for further research

Attempted Crime and the Crime Drop

This study contributes to crime drop research on the security hypothesis. Using data from the Crime Survey for England and Wales, it finds that the decline in attempted vehicle-related theft and domestic burglary was delayed by 2–4 years. Between 1993 and 1997, completed domestic burglary fell 21% but attempts by only 2.1%, while between 1993 and 1995 theft of cars fell 8% but attempts increased 3%. The delay is interpreted as consistent with rational choice theory and with some offenders continuing to try, but failing, to complete these crimes when faced with improved security. The subsequent decline in attempts is consistent with offenders, particularly new cohorts of adolescents, having been discouraged

An investigation of the polarization dependence of a temperature sensor based on an optical microfiber coupler

The dependence on polarization of the performance of a microfiber coupler based temperature sensor is experimentally investigated. The optical microfiber coupler based temperature sensor has a diameter circa 2µm and can sense temperature in the range from 100°C to 1000°C, with an average sensitivity of 18.9pm/°C. It is shown that different polarization states of the input signal have a significant influence on the proposed temperature sensing accuracy, with a estimated peak error of 63°C at 1000°C

Procedures for estimating the effects of design and operational characteristics of jet aircraft on ground noise

Estimation procedures for effect of design and flight characteristics of jets on ground nois