scholarly journals Occupations, social vulnerability and HIV/STI risk: The case of bisexual Latino men in the New York City metropolitan area

2014 ◽  
Vol 9 (10) ◽  
pp. 1167-1183 ◽  
Author(s):  
Miguel Muñoz-Laboy ◽  
Nicolette Severson ◽  
Shauna Bannan
2018 ◽  
Vol 11 (1) ◽  
Author(s):  
Brian H. Herrin ◽  
Melissa J. Beall ◽  
Xiao Feng ◽  
Monica Papeş ◽  
Susan E. Little

2018 ◽  
Vol 48 (1) ◽  
pp. 347-356 ◽  
Author(s):  
Kirk D. Henny ◽  
Kathryn Drumhiller ◽  
Madeline Y. Sutton ◽  
José Nanín

Author(s):  
Anne Halvorsen ◽  
Daniel Wood ◽  
Darian Jefferson ◽  
Timon Stasko ◽  
Jack Hui ◽  
...  

The New York City metropolitan area was hard hit by COVID-19, and the pandemic brought with it unprecedented challenges for New York City Transit. This paper addresses the techniques used to estimate dramatically changing ridership, at a time when previously dependable sources suddenly became unavailable (e.g., local bus payment data, manual field checks). The paper describes alterations to ridership models, as well as the expanding use of automated passenger counters, including validation of new technology and scaling to account for partial data availability. The paper then examines the trends in subway and bus ridership. Peak periods shifted by both time of day and relative intensity compared with the rest of the day, but not in the same way on weekdays and weekends. On average, trip distances became longer for subway and local bus routes, but overall average bus trip distances decreased owing to a drop in express bus usage. Subway ridership changes were compared with neighborhood demographic statistics and numerous correlations were identified, including with employment, income, and race and ethnicity. Other factors, such as the presence of hospitals, were not found to be significant.


2001 ◽  
Vol 32 (1) ◽  
pp. 61-88 ◽  
Author(s):  
Vivien Gornitz ◽  
Stephen Couch ◽  
Ellen K Hartig

2014 ◽  
Vol 91 (6) ◽  
pp. 1048-1064 ◽  
Author(s):  
Pui Hing Chau ◽  
Michael K. Gusmano ◽  
Joanna O. Y. Cheng ◽  
Sai Hei Cheung ◽  
Jean Woo

2007 ◽  
Vol 135 (5) ◽  
pp. 1906-1930 ◽  
Author(s):  
Teddy Holt ◽  
Julie Pullen

Abstract High-resolution numerical simulations are conducted using the Coupled Ocean–Atmosphere Mesoscale Prediction System (COAMPS)1 with two different urban canopy parameterizations for a 23-day period in August 2005 for the New York City (NYC) metropolitan area. The control COAMPS simulations use the single-layer Weather Research and Forecasting (WRF) Urban Canopy Model (W-UCM) and sensitivity simulations use a multilayer urban parameterization based on Brown and Williams (BW-UCM). Both simulations use surface forcing from the WRF land surface model, Noah, and hourly sea surface temperature fields from the New York Harbor and Ocean Prediction System model hindcast. Mean statistics are computed for the 23-day period from 5 to 27 August (540-hourly observations) at five Meteorological Aviation Report stations for a nested 0.444-km horizontal resolution grid centered over the NYC metropolitan area. Both simulations show a cold mean urban canopy air temperature bias primarily due to an underestimation of nighttime temperatures. The mean bias is significantly reduced using the W-UCM (−0.10°C for W-UCM versus −0.82°C for BW-UCM) due to the development of a stronger nocturnal urban heat island (UHI; mean value of 2.2°C for the W-UCM versus 1.9°C for the BW-UCM). Results from a 24-h case study (12 August 2005) indicate that the W-UCM parameterization better maintains the UHI through increased nocturnal warming due to wall and road effects. The ground heat flux for the W-UCM is much larger during the daytime than for the BW-UCM (peak ∼300 versus 100 W m−2), effectively shifting the period of positive sensible flux later into the early evening. This helps to maintain the near-surface mixed layer at night in the W-UCM simulation and sustains the nocturnal UHI. In contrast, the BW-UCM simulation develops a strong nocturnal stable surface layer extending to approximately 50–75-m depth. Subsequently, the nocturnal BW-UCM wind speeds are a factor of 3–4 less than W-UCM with reduced nighttime turbulent kinetic energy (average < 0.1 m2 s−2). For the densely urbanized area of Manhattan, BW-UCM winds show more dependence on urbanization than W-UCM. The decrease in urban wind speed is most prominent for BW-UCM both in the day- and nighttime over lower Manhattan, with the daytime decrease generally over the region of tallest building heights while the nighttime decrease is influenced by both building height as well as urban fraction. In contrast, the W-UCM winds show less horizontal variation over Manhattan, particularly during the daytime. These results stress the importance of properly characterizing the urban morphology in urban parameterizations at high resolutions to improve the model’s predictive capability.


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