Experiences of City Heliport Operations

1968 ◽  
Vol 72 (690) ◽  
pp. 549-555
Author(s):  
Robert B. Meyersburg
Keyword(s):  
New York ◽  
Los Angeles ◽  
Traffic Control ◽  
Ground Level ◽  
Operational Experience ◽  
Wall Street ◽  
Related Factors ◽  
Factors Affecting ◽  
Obstacle Clearance ◽  
The Us

This paper describes seven city heliports in the US, considering first their physical features and associated operating factors and, second, the possible application of the operational experience gained with these heliports to future heliport design. Three of the seven heliports are in New York City—the Pan American Building rooftop, Wall Street Pier near the confluence of the Hudson and East Rivers, and the World's Fair Heliport. One is in Chicago, at Midway Airport. The remaining three are in California; Los Angeles International Airport, Anaheim / Disneyland, and Oakland. Taken collectively, the seven heliports are representative of city heliport operation in the US today. Taken individually, they represent considerable variation in the significant factors affecting their operation, such as noise, height above ground level, traffic control towers, interface with other modes of transportation, both air and surface, lighting, instrument operation, obstacle clearance, turbulence, and related factors.

Balancing “Fidelity” and Community Context in the Adaptation of Asthma Evidence-Based Interventions in the “Real World”

2011 ◽  
Vol 12 (6_suppl_1) ◽  
pp. 63S-72S ◽  
Author(s):  
Marielena Lara ◽  
Tyra Bryant-Stephens ◽  
Maureen Damitz ◽  
Sally Findley ◽  
Jesús González Gavillán ◽  
...  
Keyword(s):  
New York ◽  
Los Angeles ◽  
Childhood Asthma ◽  
Contextual Factors ◽  
Lessons Learned ◽  
Community Context ◽  
Evidence Based ◽  
Related Factors ◽  
Factors Affecting ◽  
Asthma Outcomes

The Merck Childhood Asthma Network (MCAN) initiative selected five sites (New York City, Puerto Rico, Chicago, Los Angeles, and Philadelphia) to engage in translational research to adapt evidence-based interventions (EBIs) to improve childhood asthma outcomes. The authors summarize the sites’ experience by describing criteria defining the fidelity of translation, community contextual factors serving as barriers or enablers to fidelity, types of adaptation conducted, and strategies used to balance contextual factors and fidelity in developing a “best fit” for EBIs in the community. A conceptual model captures important structural and process-related factors and helps frame lessons learned. Site implementers and intervention developers reached consensus on qualitative rankings of the levels of fidelity of implementation for each of the EBI core components: low fidelity, adaptation (major vs. minor), or high fidelity. MCAN sites were successful in adapting core EBI components based on their understanding of structural and other contextual barriers and enhancers in their communities. Although the sites varied regarding both the EBI components they implemented and their respective levels of fidelity, all sites observed improvement in asthma outcomes. Our collective experiences of adapting and implementing asthma EBIs highlight many of the factors affecting translation of evidenced-based approaches to chronic disease management in real community settings.

The Shear Layer above and in Urban Canopies

2007 ◽  
Vol 46 (3) ◽  
pp. 368-376 ◽  
Author(s):  
Pablo Huq ◽  
Louis A. White ◽  
Alejandro Carrillo ◽  
Jose Redondo ◽  
Seshu Dharmavaram ◽  
...  
Keyword(s):  
New York ◽  
New York City ◽  
Los Angeles ◽  
Shear Layer ◽  
Urban Canopy ◽  
Ground Level ◽  
Shear Layers ◽  
Mean Velocity ◽  
Building Height ◽  
The Mean

Abstract The nature and role of the shear layer, which occurs at the level of the average building height in urban canopies, are poorly understood. Velocity data are analyzed to determine the characteristics of the shear layer of the urban canopy, defined as the broad, linear segment of the mean velocity profile in a region of high shear. Particle image velocimetry measurements in a water tunnel were undertaken to resolve velocity profiles for urban canopies of two geometries typical of Los Angeles, California, and New York City, New York, for which the aspect ratios (average building height-to-width ratio) H/wb are 1 and 3, respectively. The shear layers evolve with distance differently: For H/wb = 1 the urban canopy shear layer extends quickly from above the building height to ground level, whereas for H/wb = 3 the urban canopy shear layer remains elevated at the vicinity of the building height, only reaching to a depth of z/H ∼ 0.5 far downstream. Profiles of the mean velocity gradient also differ from each other for urban canopies associated with H/wb of 1 or 3. Values of shear dU/dz increase toward ground level for an urban canopy associated with H/wb = 1. For an urban canopy associated with H/wb = 3, localized peaks of shear dU/dz exist at the building height and at ground level, with values of shear decreasing to zero at building midheight and far above the building height. A consequence of the different forms of the shear layers of the two urban canopies is that the ground-level dispersion coefficient is likely to be greater for urban canopies associated with H/wb = 1 than for those associated with H/wb = 3 because of an increased ventilation and exchange mechanism for cities such as Los Angeles relative to cities such as New York City that possess urban canyons.

scholarly journals Estimating background contributions and US anthropogenic enhancements to maximum ozone concentrations in the northern US

2019 ◽  
Vol 19 (19) ◽  
pp. 12587-12605 ◽  
Author(s):  
David D. Parrish ◽  
Christine A. Ennis
Keyword(s):  
New York ◽  
Los Angeles ◽  
Spatial Variability ◽  
Urban Area ◽  
Ambient Air ◽  
Quality Standard ◽  
Ozone Concentrations ◽  
Average Maximum ◽  
The Us ◽  
Ambient Air Quality Standard

Abstract. US ambient ozone concentrations have two components: US background ozone and enhancements produced from the country's anthropogenic precursor emissions. Only the enhancements effectively respond to national emission controls. We investigate the temporal evolution and spatial variability in the largest ozone concentrations, i.e., those that define the ozone design value (ODV) upon which the National Ambient Air Quality Standard (NAAQS) is based, within the northern tier of US states. We focus on two regions: rural western states, with only small anthropogenic precursor emissions, and the urbanized northeastern states, which include the New York City urban area, the nation's most populated. The US background ODV (i.e., the ODV remaining if US anthropogenic precursor emissions were reduced to zero) is estimated to vary from 54 to 63 ppb in the rural western states and to be smaller and nearly constant (45.8±3.0 ppb) throughout the northeastern states. These US background ODVs correspond to 65 % to 90 % of the 2015 NAAQS of 70 ppb. Over the past 2 to 3 decades US emission control efforts have decreased the US anthropogenic ODV enhancements at an approximately exponential rate, with an e-folding time constant of ∼22 years. These ODV enhancements are relatively large in the northeastern US, with state maximum ODV enhancements of ∼35–64 ppb in 2000, but are not discernible in the rural western states. The US background ODV contribution is significantly larger than the present-day ODV enhancements due to photochemical production from US anthropogenic precursor emissions in the urban as well as the rural regions investigated. Forward projections of past trends suggest that average maximum ODVs in northeastern US will drop below the NAAQS of 70 ppb by about 2021, assuming that the exponential decrease in the ODV enhancements can be maintained and the US background ODV remains constant. This estimate is much more optimistic than in the Los Angeles urban area, where a similar approach estimates the maximum ODV to reach 70 ppb in ∼2050 (Parrish et al., 2017a). The primary reason for this large difference is the significantly higher US ODV background (62.0±2.0 ppb) estimated for the Los Angeles urban area. The approach used in this work has some unquantified uncertainties that are discussed. Models can also estimate US background ODVs; some of those results are shown to correlate with the observationally based estimates derived here (r2 values for different models are ∼0.31 to 0.90), but they are on average systematically lower by 4 to 13 ppb. Further model improvement is required until their output can accurately reproduce the time series and spatial variability in observed ODVs. Ideally, the uncertainties in the model and observationally based approaches can then be reduced through additional comparisons.

The Emergence of Los Angeles as a Fashion Hub

Urban Studies ◽  
2011 ◽  
Vol 48 (14) ◽  
pp. 3043-3066 ◽  
Author(s):  
Sarah Williams ◽  
Elizabeth Currid-Halkett
Keyword(s):  
New York ◽  
Los Angeles ◽  
Comparative Advantage ◽  
Geographical Information Systems ◽  
Geographical Information ◽  
Fashion Industry ◽  
Spatial Form ◽  
Industrial Landscape ◽  
The Us ◽  
Post Industrial

The US fashion industry is a useful lens through which to view the transformation of the country’s urban economic systems. Initially an industrial vanguard, fashion has evolved into a more design-oriented sector and a central part of the ‘cognitive-cultural economy’. Fashion is also a clear demonstration of place-specific comparative advantage and specialisation, intensely linked to ‘place in product’. The paper traces the fashion industry’s evolution from 1986 to 2007, focusing on New York and Los Angeles. The composition of the industry in each locale demonstrates each city’s comparative advantage and these advantages may be key determinants of their future fortunes. Using geographical information systems (GIS), fashion’s current spatial form is studied. Within the industry’s sub-sectors, spatial patterns and similar geographical clustering emerge. The industry may be facing somewhat of a reconfiguring of its economic geography; however, the fashion industry’s spatial-structural patterns persist within each city. We also find that fashion, like high technology and Hollywood, tends to produce regional network agglomerations, strong headquarter cities and co-location of particular sectors. Our findings are consistent with the larger theoretical and empirical observations on the post-industrial landscape.

scholarly journals Respondents’ Involvement in Tourist Activities at the Time of the COVID-19 Pandemic

2020 ◽  
Vol 12 (22) ◽  
pp. 9610 ◽  
Author(s):  
Michał Roman ◽  
Arkadiusz Niedziółka ◽  
Andrzej Krasnodębski
Keyword(s):  
New York ◽  
Sustainable Development ◽  
Social Economic ◽  
New York State ◽  
Organizational Factors ◽  
Survey Method ◽  
Related Factors ◽  
The Us ◽  
Research Findings ◽  
Considerable Impact

The article is aimed at presenting the survey respondents’ involvement in tourist activities, taking into account certain factors at the time of the COVID-19 pandemic. The main objective may be divided into three direct aims, each of which consists of the determination of the factors that can influence the choice of tourist journeys: (1) organizational factors, (2) social-economic ones, and (3) sustainable development. The authors’ own research findings are used to verify the objective. The research was conducted in April and May 2020 with the use of a diagnostic survey method and a questionnaire. Five-hundred sixty-four respondents from Poland (Podlaskie, Masovian, and Lesser Poland Voivodeships) and 133 respondents from the US (New York State, New Jersey, and Illinois) took part in the research. It was divided into organizational, social-economic, and sustainable development related factors. The research confirmed, inter alia, a great impact of the COVID-19 pandemic on the organization of tourist travels by the respondents in 2020. The issue presented in the article is a new one; it has not yet been a subject matter of research. That is the major reason the authors aimed to conduct it. What is a new methodological element in the article is the organization of some concepts concerning tourism and a presentation of the influence of COVID-19 on tourism. In the authors’ opinion, the issues presented are new and have a considerable impact on new trends in the development of tourism at the time of the COVID-19 pandemic. The issue discussed is very broad, and the article does not exhaust it. The research findings are compared to the research findings reported by other authors, and standard deviations are calculated.

Radical Gesture and the Politics of Postdramatic Tragedy: Reza Abdoh’s The Law of Remains

2020 ◽  
Vol 8 (1) ◽  
pp. 127-142
Author(s):  
Joseph Cermatori
Keyword(s):  
New York ◽  
Los Angeles ◽  
New York Times ◽  
Judith Butler ◽  
Serial Killer ◽  
Political Dimension ◽  
Avant Garde ◽  
The Us ◽  
Aids Crisis ◽  
The Law

AbstractDuring his short lifetime, Reza Abdoh (1963–1995) was hailed as a trailblazing theater artist in the avant-garde art scenes of both Los Angeles and New York, where he created a series of massive performance spectacles that sought to intervene critically in the American political status quo. His 1992 piece The Law of Remains stages a furious response to the US American AIDS crisis, depicting it through the allegorical lens of a film being made by Andy Warhol based on the life of queer serial killer and cannibal Jeffrey Dahmer. Performed in the ruins of an abandoned hotel ballroom, the piece drew attention in The New York Times for being “one of the angriest theater pieces ever hurled at a New York audience.” This article analyzes the political dimension of Abdoh’s theater by focusing on specific gestural elements that occur at key moments in The Law of Remains. Doing so, it brings together theories of gesture from Hans-Thies Lehmann, Giorgio Agamben, Judith Butler, and Walter Benjamin, and configures these viewpoints into a constellation through which the politics of gesture in Abdoh can be illuminated. What emerges in Abdoh is a politics of “hopeless hope,” one uniquely meaningful for our planetary present tense.

scholarly journals The 2021 Middle East agenda of U.S. media

2021 ◽  
pp. 0
Author(s):  
Pavel Koshkin
Keyword(s):  
New York ◽  
Los Angeles ◽  
Middle East ◽  
Negative Impact ◽  
New York Times ◽  
Wall Street ◽  
Los Angeles Times ◽  
Mainstream Media ◽  
The Wall Street Journal ◽  
The U.S

The escalation of the Arab-Israeli conflict has been testing the Biden administration since May 2021, with exposing the current Middle East agenda of U.S. media and its impact on Biden’s and democrats’ reputation. Despite the fact that the press has a certain, if restricted, influence on politics, intuitively, journalists come up with understanding of public opinion on Biden. This article deals with the problem of the U.S. president’s publicity through the lens of the current media discourse, with author relying on the descriptive method, discourse analysis and content analysis of materials in American mainstream media such as  The New York Times, The Washington Post, The Wall-Street Journal, The Los Angeles Times, Politico, Newsweek and Time. In conclusion, the author assumes that – alongside with the problems of inflation, economic crisis and the pandemic – the coverage of the recent Arab-Israeli escalation in the U.S. press has an additional negative impact on Biden’s reputation and his odds of winning the 2024 future election.

scholarly journals Analysis of SARS-CoV-2 Genomes from Southern California Reveals Community Transmission Pathways in the Early Stage of the US COVID-19 Pandemic

2020 ◽  
Author(s):  
Wenjuan Zhang ◽  
John Paul Govindavari ◽  
Brian Davis ◽  
Stephanie Chen ◽  
Jong Taek Kim ◽  
...  
Keyword(s):  
New York ◽  
Los Angeles ◽  
Local Community ◽  
Early Stage ◽  
Medical Center ◽  
New York State ◽  
The United States ◽  
Genomic Diversity ◽  
York State ◽  
The Us

AbstractGiven the higher mortality rate and widespread phenomenon of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS CoV-2) within the United States (US) population, understanding the mutational pattern of SARS CoV-2 has global implications for detection and therapy to prevent further escalation. Los Angeles has become an epicenter of the SARS-CoV-2 pandemic in the US. Efforts to contain the spread of SARS-CoV-2 require identifying its genetic and geographic variation and understanding the drivers of these differences. For the first time, we report genetic characterization of SARS-CoV-2 genome isolates in the Los Angeles population using targeted next generation sequencing (NGS). Samples collected at Cedars Sinai Medical Center were collected from patients with confirmed SARS-CoV-2 infection. We identified and diagnosed 192 patients by our in-house qPCR assay. In this population, the highest frequency variants were in known mutations in the 5’UTR, AA193 protein, RdRp and the spike glycoprotein. SARS-CoV-2 transmission within the local community was tracked by integrating mutation data with patient postal codes with two predominant community spread clusters being identified. Notably, significant viral genomic diversity was identified. Less than 10% of the Los Angeles community samples resembled published mutational profiles of SARS-CoV-2 genomes from China, while >50% of the isolates shared closely similarities to those from New York State. Based on these findings we conclude SARS-CoV-2 was likely introduced into the Los Angeles community predominantly from New York State but also via multiple other independent transmission routes including but not limited to Washington State and China.

scholarly journals Diversification through ‘fun in the farm’: analyzing structural factors affecting agritourism in Tennessee

2020 ◽  
Vol 23 (1) ◽  
pp. 105-120 ◽  
Author(s):  
Aditya R. Khanal ◽  
Ummey Honey ◽  
Omobolaji Omobitan
Keyword(s):  
Rural Areas ◽  
Spatial Regression ◽  
Structural Factors ◽  
Spatial Effects ◽  
Related Factors ◽  
Factors Affecting ◽  
Agricultural Enterprise ◽  
Level Data ◽  
The Us ◽  
Spatial Terms

With recent development, agritourism – visiting a working agricultural setting such as farm and ranch for leisure, recreation, or educational purposes – is gaining popularity in the US. Agritourism can be considered as a viable alternative agricultural enterprise to enhance income and sustainability of farms. This study maps agritourism locations and analyzes the structural factors affecting agritourism location and establishments. Using zip-code level location information, county-level data from Tennessee and spatial regression models, we found significant effects of rural factors, demographics, and educational-, economic-, and cultural- capital factors and their interactions on the location and establishment of agritourism farms. The counties lagging behind in agritourism can focus on educational and capital related factors to enable farms to participate in agritourism activities. Rural areas can capitalize the recreational and natural aspects of agriculture complementing it with agritourism activities. Additionally, our significant spatial terms and tests suggest for the need to test and account for potential spatial effects on studies focused on structural factors and location decision models.

T@pped into the W3rldWideWeb: C0nfigur-ing [Net(I)Ana(S)]

2021 ◽  
pp. 217-225
Author(s):  
Vanesa Menéndez Cuesta
Keyword(s):  
New York ◽  
Los Angeles ◽  
Urban Landscape ◽  
Early Adulthood ◽  
Great Influence ◽  
Human Condition ◽  
The Body ◽  
Urban Spaces ◽  
Physical Isolation ◽  
The Us

The purpose of this paper is to explore the ways in which loneliness has become the epitome of contemporary human condition for the Millennial generation, together with its impact on the psychological and emotional side of human expression and the urban landscape, as expressed through art and the virtual. Modern megacities are shaping and configuring what we nowadays understand as art. In the case of Alt [C]Lit poets, whether it is New York City or Los Angeles, the US urban landscape has a great influence on how these young authors have configured their poetic production: their experiences and referents belong to these cities. In this paper, I would like to discuss how spaces, especially urban spaces, have generated physical isolation and have transitioned into a mental landscape, to which the virtual contributes to increase anxious alienation that manifests itself through the body and the configuration of human subjectivities. Therefore, I will analyze hypermodern identity/ies that result from the urban landscape of megalopolises, the manner in which the virtual has generated online communities and has contributed to (hyper)sexualization, and the way in which Zafra’s concept of netianas can be applied in order to analyze the paradoxical position of loneliness and early-adulthood through the Alt [C]Lit poetry and other related-literary and visual production.

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