scholarly journals Neighborhood Greenspace and Health in a Large Urban Center

Urban Forests ◽  
2016 ◽  
pp. 59-90
Keyword(s):  
Urban Center

‘How do you get to Tim Hortons?’ Direction-giving in Ontario dialects

2021 ◽  
Vol 66 (1) ◽  
pp. 1-30
Author(s):  
Lisa Schlegl ◽  
Sali A. Tagliamonte
Keyword(s):  
Regional Variation ◽  
Speech Act ◽  
Urban Center ◽  
Canadian English ◽  
Northern Ontario ◽  
Southern Ontario ◽  
Cardinal Directions ◽  
Physical Layout

AbstractIn this study, we target the speech act of direction-giving using variationist sociolinguistic methods within a corpus of vernacular speech from six Ontario communities. Not only do we find social and geographical correlates to linguistic choices in direction-giving, but we also establish the influence of the physical layout of the community/place in question. Direction-giving in the urban center of Toronto (Southern Ontario) contrasts with five Northern Ontario communities. Northerners use more relative directions, while Torontonians use more cardinal directions, landmarks, and proper street names – for example, Go east on Bloor to the Manulife Centre. We also find that specific lexical choices (e.g., Take a right vs. Make a right) distinguish direction-givers in Northern Ontario from those in Toronto. These differences identify direction-giving as an ideal site for sociolinguistic and dialectological investigation and corroborate previous findings documenting regional variation in Canadian English.

scholarly journals Modeling the Impacts of Autonomous Vehicles on Land Use Using a LUTI Model

2021 ◽  
Vol 13 (4) ◽  
pp. 1608
Author(s):  
Rubén Cordera ◽  
Soledad Nogués ◽  
Esther González-González ◽  
José Luis Moura
Keyword(s):  
Land Use ◽  
Urban Sprawl ◽  
Autonomous Vehicles ◽  
Interaction Model ◽  
Urban Systems ◽  
Unwanted Effect ◽  
Urban Center ◽  
Positive Effects ◽  
Current Paradigm ◽  
Shed Light

Autonomous vehicles (AVs) can generate major changes in urban systems due to their ability to use road infrastructures more efficiently and shorten trip times. However, there is great uncertainty about these effects and about whether the use of these vehicles will continue to be private, in continuity with the current paradigm, or whether they will become shared (carsharing/ridesharing). In order to try to shed light on these matters, the use of a scenario-based methodology and the evaluation of the scenarios using a land use–transport interaction model (LUTI model TRANSPACE) is proposed. This model allows simulating the impacts that changes in the transport system can generate on the location of households and companies oriented to local demand and accessibility conditions. The obtained results allow us to state that, if AVs would generate a significant increase in the capacity of urban and interurban road infrastructures, the impacts on mobility and on the location of activities could be positive, with a decrease in the distances traveled, trip times, and no evidence of significant urban sprawl processes. However, if these increases in capacity are accompanied by a large augment in the demand for shared journeys by new users (young, elderly) or empty journeys, the positive effects could disappear. Thus, this scenario would imply an increase in trip times, reduced accessibilities, and longer average distances traveled, all of which could cause the unwanted effect of expelling activities from the consolidated urban center.

scholarly journals Impact of distance on postoperative follow-up in patients of pediatric surgery: a retrospective review

2020 ◽  
Vol 3 (4) ◽  
pp. e000195
Author(s):  
Meagan E Wiebe ◽  
Anna C Shawyer
Keyword(s):  
Postoperative Complications ◽  
Pediatric Surgery ◽  
Descriptive Statistics ◽  
Attendance Rates ◽  
Urban Center ◽  
Children's Hospital ◽  
Median Distance ◽  
Equivalent Rate ◽  
Children’S Hospital

ObjectiveCentralization of medical services in Canada has resulted in patients travelling long distances for healthcare, which may compromise their health. We hypothesized that children living farther from a children’s hospital were offered and attended fewer follow-up appointments.MethodsWe reviewed children less than 17 years of age referred to the general surgery clinic at a tertiary children’s hospital during a 2-year period who underwent surgery. Descriptive statistics were performed.ResultsWe identified 723 patients. The majority were male (61%) with a median age of 7 years (range 18 days to16 years) and were from the major urban center (MUC) (56.3%). The median distance travelled to hospital for MUC patients was 8.9 km (range 0.9–22 km) vs 119.5 km (range 20.3–1950 km) for non-MUC patients. MUC children were offered more follow-up appointments (72.7% vs 60.8%, p<0.05). No significant differences existed in follow-up attendance rates (MUC 88.5% vs non-MUC 89.1%, p=0.84) or postoperative complications (9.8% vs 9.2%, p=0.78). There were no deaths.ConclusionsPatients living farther from a hospital were offered fewer follow-up appointments, but attended an equivalent rate of follow-ups when offered one. Telemedicine and remote follow-up are underused approaches that can permit follow-up appointments while reducing associated travel time and expenses.

The Development of the Southeast Lower Town of Sirkeli Höyük

2020 ◽  
Vol 47 (2) ◽  
pp. 215-286
Author(s):  
Alexander E. Sollee ◽  
Hannah Mönninghoff ◽  
Ekin Kozal ◽  
Doğa Karakaya ◽  
Joëlle Heim ◽  
...  
Keyword(s):  
Iron Age ◽  
Residential Area ◽  
Urban Center ◽  
Residential Areas ◽  
Stratigraphic Sequence ◽  
The People ◽  
Archaeological Work ◽  
Archaeobotanical Remains ◽  
Modern Turkey ◽  
Excavation Area

AbstractThe site of Sirkeli Höyük in the province of Adana in modern Turkey is one of the largest settlement mounds in Plain Cilicia. In 2012, a geophysical survey revealed that the ancient settlement was not confined to the höyük, but also encompassed an extensive lower town to the southeast of the main mound. To gain information on the dating and development of this part of the settlement, an excavation area (“Sector F”) was opened at a spot where the magnetometry survey suggested the presence of a city gate. Since then, archaeological work in this area has continuously produced new discoveries that help us understand how this residential area and its inhabitants developed throughout the periods of its occupation. Especially the Iron Age (Neo Cilician period) levels, which cover approximately the 11th–7th centuries B.C., provide important information on how this urban center of the Neo Hittite kingdom Hiyawa/Que changed over time and to which extent historical events impacted the people living in one of its residential areas. This contribution discusses the stratigraphic sequence, the pottery, and the archaeobotanical remains discovered in Sector F during the 2013–2019 campaigns, and concludes with a synthesis of the development in this area from a historical perspective.

scholarly journals New Perspectives on Migration into the Tlajinga District of Teotihuacan: A Dual-Isotope Approach

2021 ◽  
pp. 1-21
Author(s):  
Gina M. Buckley ◽  
Rebecca Storey ◽  
Fred J. Longstaffe ◽  
David M. Carballo ◽  
Kenneth G. Hirth ◽  
...  
Keyword(s):  
Oxygen Isotopes ◽  
Human Remains ◽  
Past Research ◽  
Urban Center ◽  
Radiocarbon Dates ◽  
Future Studies ◽  
Dual Isotope ◽  
West Mexico ◽  
New Finding ◽  
The City

The city of Teotihuacan (AD 1–550) was a major multiethnic urban center that attracted migrants from as far away as west Mexico and the Maya region. Past research in the Tlajinga district at Teotihuacan using oxygen isotopes from human remains estimated that nearly 30% of the population of Tlajinga 33, a single apartment compound, were migrants. This study takes a dual-isotope approach (87Sr/86Sr and δ18O p ) to reevaluate the proportion of in-migration at Tlajinga and includes data from two additional apartment compounds, Tlajinga 17 and 18 (n = 23). New results indicate that migrants comprised ~45% of the Tlajinga population. Previously acquired radiocarbon dates combined with mortuary and isotope data suggest that immigration to Tlajinga was highest during the first centuries of compound occupation. Nevertheless, migration was a continual process throughout its history. Additionally, a new finding suggests that residents of Tlajinga 33 ingested foods with higher 87Sr/86Sr ratios than did those of Tlajinga 17 and 18. We hypothesize that the incorporation of imported lime for the nixtamalization process skewed the 87Sr/86Sr ratios of human remains, a potentially important finding for future studies at Teotihuacan.

scholarly journals 526 Time to intervention in obstetric hypertensive emergencies in a US urban center

2021 ◽  
Vol 224 (2) ◽  
pp. S332-S333
Author(s):  
Rasha Khoury ◽  
Elise Rosenthal ◽  
Lisa Nathan
Keyword(s):  
Urban Center ◽  
Hypertensive Emergencies

scholarly journals Variation in Ectosymbiont Assemblages Associated with Rock Pigeons (Columba livia) from Coast to Coast in Canada

Diversity ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 9
Author(s):  
Alexandra Grossi ◽  
Heather Proctor
Keyword(s):  
Columba Livia ◽  
The United States ◽  
Climatic Conditions ◽  
Assemblage Structure ◽  
Meteorological Variables ◽  
Urban Center ◽  
Sampling Locations ◽  
Maximum Temperatures ◽  
Symbiont Species ◽  
Maximum Humidity

When a species colonizes a new area, it has the potential to bring with it an array of smaller-bodied symbionts. Rock Pigeons (Columba livia Gmelin) have colonized most of Canada and are found in almost every urban center. In its native range, C. livia hosts more than a dozen species of ectosymbiotic arthropods, and some of these lice and mites have been reported from Rock Pigeons in the United States. Despite being so abundant and widely distributed, there are only scattered host-symbiont records for rock pigeons in Canada. Here we sample Rock Pigeons from seven locations across Canada from the west to east (a distance of > 4000 km) to increase our knowledge of the distribution of their ectosymbionts. Additionally, because ectosymbiont abundance can be affected by temperature and humidity, we looked at meteorological variables for each location to assess whether they were correlated with ectosymbiont assemblage structure. We found eight species of mites associated with different parts of the host’s integument: the feather dwelling mites Falculifer rostratus (Buchholz), Pterophagus columbae (Sugimoto) and Diplaegidia columbae (Buchholz); the skin mites: Harpyrhynchoides gallowayi Bochkov, OConnor and Klompen, H. columbae (Fain), and Ornithocheyletia hallae Smiley; and the nasal mites Tinaminyssus melloi (Castro) and T. columbae (Crossley). We also found five species of lice: Columbicola columbae (Linnaeus), Campanulotes compar (Burmeister), Coloceras tovornikae Tendeiro, Hohorstiella lata Piaget, and Bonomiella columbae Emerson. All 13 ectosymbiont species were found in the two coastal locations of Vancouver (British Columbia) and Halifax (Nova Scotia). The symbiont species found in all sampling locations were the mites O. hallae, H. gallowayi, T. melloi and T. columbae, and the lice Colu. columbae and Camp. compar. Three local meteorological variables were significantly correlated with mite assemblage structure: annual minimum and maximum temperatures and maximum humidity in the month the pigeon was collected. Two local meteorological variables, annual maximum and average temperatures, were significantly correlated with louse assemblages. Our results suggest that milder climatic conditions may affect richness and assemblage structure of ectosymbiont assemblages associated with Rock Pigeons in Canada.

scholarly journals Exploring the Variation Trend of Urban Expansion, Land Surface Temperature, and Ecological Quality and Their Interrelationships in Guangzhou, China, from 1987 to 2019

2021 ◽  
Vol 13 (5) ◽  
pp. 1019
Author(s):  
Jianhui Xu ◽  
Yi Zhao ◽  
Caige Sun ◽  
Hanbin Liang ◽  
Ji Yang ◽  
...  
Keyword(s):  
Time Series ◽  
Surface Temperature ◽  
Land Surface Temperature ◽  
Land Surface ◽  
Urban Expansion ◽  
Impervious Surface ◽  
Ecological Quality ◽  
Urban Center ◽  
Urban Centers ◽  
Rapid Urbanization

This study explored the model of urban impervious surface (IS) density, land surface temperature (LST), and comprehensive ecological evaluation index (CEEI) from urban centers to suburbs. The interrelationships between these parameters in Guangzhou from 1987 to 2019 were analyzed using time-series Landsat-5 TM (Thematic Mapper), Landsat-8 OLI (Operational Land Imager), and TIRS (Thermal Infrared Sensor) images. The urban IS densities were calculated in concentric rings using time-series IS fractions, which were used to construct an inverse S-shaped urban IS density function to depict changes in urban form and the spatio-temporal dynamics of urban expansion from the urban center to the suburbs. The results indicated that Guangzhou experienced expansive urban growth, with the patterns of urban spatial structure changing from a single-center to a multi-center structure over the past 32 years. Next, the normalized LST and CEEI in each concentric ring were calculated, and their variation trends from the urban center to the suburbs were modeled using linear and nonlinear functions, respectively. The results showed that the normalized LST had a gradual decreasing trend from the urban center to the suburbs, while the CEEI showed a significant increasing trend. During the 32-year rapid urban development, the normalized LST difference between the urban center and suburbs increased gradually with time, and the CEEI significantly decreased. This indicated that rapid urbanization significantly expanded the impervious surface areas in Guangzhou, leading to an increase in the LST difference between urban centers and suburbs and a deterioration in ecological quality. Finally, the potential interrelationships among urban IS density, normalized LST, and CEEI were also explored using different models. This study revealed that rapid urbanization has produced geographical convergence between several ISs, which may increase the risk of the urban heat island effect and degradation of ecological quality.

INVESTIGATING TEOTIHUACAN THROUGHTMPSURFACE COLLECTIONS AND OBSERVATIONS

2015 ◽  
Vol 26 (1) ◽  
pp. 163-181 ◽  
Author(s):  
Ian G. Robertson
Keyword(s):  
Urban Sprawl ◽  
Agricultural Practices ◽  
Urban Center ◽  
Digital Format ◽  
Surface Survey ◽  
Ancient City ◽  
History Of ◽  
Extensive Surface ◽  
The 1960S ◽  
Surface Observations

AbstractIn the 1960s, the Teotihuacan Mapping Project (TMP) focused an ambitious, multiyear survey program on the pre-Columbian urban center of Teotihuacan. In addition to creating a highly detailed map, the TMP made systematic records of surface remains and collected nearly one million artifacts from roughly 5,000 provenience tracts. Taken together, the spatial, descriptive, and artifactual data collected by the TMP still constitutes one of the most extensive and most detailed records in existence for any ancient city. This paper characterizes and provides an update on TMP surface observations, particularly as they exist in digital format. Several analytical case studies illustrate substantive ways in which these data have been used in the decades since the TMP survey to investigate the culture and history of ancient Teotihuacan. The utility of extensive surface survey data for investigating key urban organizational elements such as neighborhoods and social districts is briefly considered, along with the growing importance of the TMP collections and records as increasingly large parts of Teotihuacan are lost to urban sprawl and destructive agricultural practices.

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