Suchergebnisse

Abstract
Many survey datasets have relatively high levels of error. The American Community Survey (ACS) data disseminated by the U.S. Census Bureau offer critical socio-demographic data of the U.S. and include a margin of error to indicate the reliability of an estimate for each census unit. Such feature-based reliability data should be incorporated when using ACS data in GIS such that users are informed of the data quality. This paper provides a brief review of the ACS data. Challenges to the use of ACS data quality information in GIS are discussed. The paper briefly reviews a set of mapping tools packaged as an ArcGIS extension to tackle some challenges in incorporating the data quality information in ACS data. These mapping functions can also be used to handle other survey spatial datasets with reliability information. The extension provides a foundation to build additional GIS tools to handle and analyze survey data.

AbstractDrug policy has been subjected to much scrutiny from different stakeholder groups who present sometimes very different opinions on solutions to address a problem. Reconciling such differences, that are underpinned by both anecdotal and empirical evidence, is a priority yet to be fully achieved. In this study, we examine: (i) whether differences exist among actor groups regarding their perceived importance in policymaking; (ii) whether those who dominate the decision process value the input of laypeople or minority actors; and (iii) whether differences exist, with regard to i and ii, between study sites (i.e. Australia and Hong Kong) that have markedly different drug strategies. Overall, differential preference weightings between dominant groups reveal a strong influence of political orientation. Results suggest that decisions made by health professionals were regarded as the most important, while most of the respondent groups gave a low preference toward policy decisions made by law enforcers. Dominant groups also tend to discount the inputs of laypeople and other minority groups. Our study highlights the importance for policy actor groups to consider such a differential weighting of inputs when synthesising knowledge and gathering opinions for the development of drug policy.

Abstract
In this study we examine how the process of crime detection by frontline and investigative police can be modified so that the same level of policing inputs (i.e. police strength) can produce more outcomes (i.e. crime detection rate). A pooled frontier analysis method is used to measure the relative efficiency of 18 police districts in Hong Kong from 2007 to 2015 (n = 18 districts × 9 years = 162 decision making units (DMUs)), demonstrating variable returns-to-scale. Findings reveal that 95 of the 162 DMUs were found to be inefficient compared to the benchmark DMUs (those police districts identified by the Free Disposable Hull (FDH) approach as efficient) with an average FDH efficiency score of 95.37 out of a possible score of 100. Efficient districts provide an exemplar on how an inefficient district could achieve an optimal input–output translation for the detection of crime. This evidence can be used to shape police policy at the district level. This study represents the first frontier analysis of police efficiency in the detection of crime in Hong Kong using the most recent efficiency technique. We produce evidence that can inform police policy regarding the deployment of finite resources that improve the efficiency of detection without compromising other institutional targets.

Competition agencies around the globe are investigating whether a standard-essential patent (SEP) holder's choice to license to the makers of downstream end-user devices, rather than to makers of the components of those devices, violates competition laws. Some authorities have already reached that conclusion. While much has been written about FRAND-assured SEPs, the literature to date focuses largely on the appropriateness of seeking and obtaining injunctive relief on such patents or on the meaning of "fair and reasonable," and has largely ignored the "nondiscriminatory" prong of FRAND (fair, reasonable, and nondiscriminatory). This article analyzes what we observe to be the common industry practice of licensing on a portfolio basis at the end-user device level, and whether a patent holder's refusal to license at only at the downstream end-user device level, and not at other levels of the production chain, may constitute an antitrust violation. We conclude that (1) whether the "nondiscriminatory" prong of the FRAND promise requires licensing at the component level is a fact-specific inquiry that depends upon the specific standard-development organization's policy; (2) even if there is potential for a failure to comply with a FRAND assurance, that alone does not constitute an antitrust violation; and (3) the refusal to license at component level cannot be anticompetitive when the vertically integrated holder of one or more SEPs does not assert its patents against the makers of components but, instead, licenses its SEP portfolio to end-device manufacturers on FRAND terms.

The etiology of illicit substance involvement is a multidimensional problem shaped by factors across individual, social, and environmental domains. In this study, a multicriteria framework is employed to incorporate the input of specialists regarding risk and protective factors and the effectiveness of alternative interventions to mitigate the adverse harms and consequences associated with adolescent drug initiation and subsequent use. Using a seven-stage drug use continuum (nonuse, priming, initial use, experimental use, occasional use, regular use, and dysfunctional use), experts rate social and environmental factors as the most important from nonuse to occasional use. Experts often support preventive and harm-minimizing strategies to interrupt the progression of drug involvement and accumulation of drug-related harms among adolescents. Compared with preferable interventions, less preferable options (e.g., drug testing/monitoring) are considered to have a negative policy impact on key social, environmental, and drug dimension domains, which tend to override their positive impacts on other areas.

Migrant youth are widely considered to engage in more delinquency than their local counterparts because they experience more strains, but few studies have empirically examined the delinquency of migrant adolescents in China. This study applied data of 496 local and 667 migrant adolescents in Shenzhen, China, and examined the effect of migrant status on delinquency and the mechanism of how strains contribute to delinquency. The study found that migrant adolescents, compared with their local counterparts, generally did not engage in higher levels of delinquency despite experiencing higher levels of strains. The pathways to delinquency under strains were similar between the two groups, which were partially mediated by weakening social control and increasing delinquent peer affiliation. The findings of this study challenge the migrant–delinquency link in the dominant Chinese discourse and suggest that migrant adolescents are not necessarily more deviant compared with local adolescents.