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801.
A new situational crime prevention measure recently introduced into Great Britain involves the fitting of gates to alleyways running along the back of terraced properties to restrict access to local residents and reduce opportunities for offenders. A number of quantitative techniques were used to assess the success of the intervention in reducing burglary in the City of Liverpool. The results demonstrate that, relative to a suitable comparison area, burglary was reduced by approximately 37%, there was a diffusion of benefit to properties in the surrounding areas, and the scheme was cost beneficial with a saving of £1.86 for every pound spent. The analyses provide persuasive evidence that these reductions were attributable to the intervention. We argue that the methodological techniques demonstrated here can be applied more widely to crime prevention evaluations.  相似文献   
802.
Queensland's post-First World War Soldier Settlement Scheme, begun with noble and optimistic intentions in 1916, officially terminated in 1929 after ignominious failure. There were a number of factors which contributed to the erosion and ultimate destruction of this phase of land settlement, but Commonwealth-State antagonism and the incompetence of many State agricultural advisers were certainly significant elements. Beerburrum, just north of Brisbane, was one of the largest groups of settlements which characterised Queensland's attempts to turn swords into ploughshares. Beerburrum soldier settlers and their families strove valiantly to extract a basic living in the face of overwhelming adversity, and an examination of their circumstances offers a valuable window into the trials and tribulations of the entire scheme.  相似文献   
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During a 6-month period, we encountered two examples of tight contact wounds of the temple region which were associated with ovoid, fairly regular, perforating wounds of the skull and overlying skin. These wounds were located between the eyes with the upper border near the glabella and the lower border near the level of the lower eyelids. There was no evidence that these wounds were entry wounds and in both cases the projectiles were still within the cranial cavity. Therefore, they were interpreted as gas blowout wounds. No similar cases have been found in the literature. Law enforcement personnel and pathologists should be aware of this rather rare blowout type of shotgun injury since it may be subject to various misinterpretations, including that of an entry wound.  相似文献   
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Hypertension is a growing medical concern in the United States. With the number of Americans suffering from hypertension increasing, the use of antihypertensives such as beta-blockers is increasing as well. In fact, three beta-blockers - atenolol, metoprolol and propranolol - were among the 200 most prescribed medications in the United States in 2003. Pilots that successfully manage their hypertension can remain certified to fly. The Federal Aviation Administration currently designates approximately 8% of active pilots as "hypertensive with medication". The Civil Aerospace Medical Institute (CAMI) performs toxicological evaluation on victims of fatal aviation accidents. At CAMI beta-blockers are analyzed using gas chromatography with mass spectrometric detection. We have, however, recently developed a liquid chromatography with mass spectrometric detection (LC/MS) method for the simultaneous quantitation of three commonly prescribed beta-blockers, atenolol, metoprolol and propranolol. One advantage of our LC/MS method is the specificity provided by an ion trap MS. Utilizing an ion trap MS, we were able to conduct MS/MS and MS/MS/MS on each analyte. This method also eliminates the time-consuming and costly derivitization step necessary during GC/MS analysis. Additionally, by utilizing this novel method, any concerns about beta-blocker metabolite and/or sample matrix interference are eliminated. The limits of detection for this method ranged from 0.39 to 0.78 ng/mL and the linear dynamic range was generally 1.6-3200 ng/mL. The extraction efficiencies for each analyte ranged from 58% to 82%. This method was successfully applied to postmortem fluid and tissue specimens obtained from victims of three separate aviation accidents.  相似文献   
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President Ronald Reagan introduced a major new domestic initiativeduring his first term. The intent was to reduce the size andscope of the federal government and to increase the fiscal responsibilityof local governments. Mail questionnaires were sent to mayors,city managers, and finance officers in cities over 25,000 populationin Illinois, Indiana, Michigan, and Wisconsin asking the respondentsto indicate their perception of the impact the Reagan programhad had on their cities in the previous year and their perceptionof its anticipated impact. Response rates were nearly 50 percentfor each survey. The respondents consistently overestimatedthe impact the Reagan program would have on their cities. Thefollowing analysis explores the relationship between perceivedeffects and city and respondent characteristics, such as size,partisan identification, and state. While the Reagan policieshave had a substantial impact on these cities, the impact isnot as negative as the respondents originally thought.  相似文献   
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