Real-time low-power wireless networks are increasingly being used in applications such as: Industrial Internet-ofThings, Smart City technologies, and critical infrastructure monitoring. These networks typically use time-slotted superframe techniques to ensure real-time performance. Often the time slots are assigned statically, and energy conservation is regulated to other mechanisms such as dut...

Objectives: This paper uses transportation data to estimate how daily spatio-temporal shifts in population influence the distribution of crime over a city’s census tracts (CTs). A “funnel hypothesis” states that these daily flows are central for crime concentrations within a city. We present arguments for and against funneling prior to empirical analysis. Methods: A municipal transport agency i...

We review the accumulated knowledge on city size distributions and determinants of urban growth. This topic is of interest because of a number of key stylized facts, including notably Zipf’s law for cities (which states that the number of cities of size greater than S is proportional to 1/S) and the importance of urban primacy. We first review the empirical evidence on the upper tail of city si...

The present study sought to define neighborhood context by examining relationships among data from city-level administrative databases at the level of the census block group. The present neighborhood investigation included 1,801 block groups comprising a large, northeastern metropolitan area. Common factor analyses and multistage, hierarchical cluster analyses yielded two dimensions (i.e., Soci...

bipolar spectrum disorders may often go undiagnosed or unrecognized. the aim of this study was to determine the proportion of bipolar disorder symptoms in iranian patients with a major depressive episode.313 patients with a current dsm-iv-tr (diagnostic and statistical manual of mental disorders 4th ed. text rev.) diagnosed with a major depressive episode entered this cross-sectional study. thi...