Geolocation of Internet hosts relies mainly on exhaustive tabulation techniques. Those techniques consist in building a database, that keeps the mapping between IP blocks and a geographic location. Relying on a single location for a whole IP block requires using a coarse enough geographic resolution. As this geographic resolution is not made explicit in databases, we try in this paper to better...

OBJECTIVES/HYPOTHESIS To determine whether there is an association between the geographic location of an applicant's undergraduate school, medical school, and residency program among matched otolaryngology residency applicants. STUDY DESIGN Observational. METHODS Otolaryngology residency program applications to our institution from 2009 to 2013 were analyzed. The geographic location of each...

Rates of alcohol use and alcohol use disorder (AUD) vary with geographic location. Research on risks for AUD associated with living in a rural versus urban setting is complicated by the varied systems used to classify geographic location. Studies comparing the prevalence of heavier or binge drinking and AUD based on a dichotomous urban/rural classification have mixed findings when compared with...

We present geographical secure path routing, an infrastructure free geographic routing protocol, that is resilient to disruptions caused by malicious or faulty nodes. Geographic locations of anonymous nodes are authenticated in order to provide location authentication and location privacy simultaneously. Our protocol also authenticates the routing paths taken by individual messages. This provid...

OBJECTIVE Lower-extremity amputation (LEA) is common among persons with diabetes. The goal of this study was to identify geographic variation and the influence of location on the incidence of LEA among U.S. Medicare beneficiaries with diabetes. RESEARCH DESIGN AND METHODS We conducted a cohort study of beneficiaries of Medicare. The geographic unit of analysis was hospital referral regions (HR...

The paper analyses the impact of geographic innovation on Total Factor Productivity (TFP) in Taiwan. Using 242 four-digit standard industrial classification (SIC) industries in Taiwan in 2001, we compute TFP by estimating Translog production functions with K, L, E and M inputs, and measure the geographic innovative activity using both Krugman's Gini coefficients and the location Herfindahl inde...

The production and consumption of geographic information is becoming a more mobile practice, with more corporate actors challenging the traditional stronghold of Esriand government-based geospatial developments. What can be considered a geographic information system has expanded to include web-based technologies like Google Earth/Maps, as well as more recent developments of Microsoft’s Bing Map...

We analyze how buyers use electronic channels to shift their purchases across geographic locations and the corresponding implications for geographic price variance and levels. Using data from the wholesale used vehicle market from 2003 to 2008, we find that buyers are more sensitive to price and less sensitive to distance when purchasing via an electronic channel than via the physical channel. ...