scholarly journals Exploring the Synergies between Urban Overheating and Heatwaves (HWs) in Western Sydney

Energies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 470 ◽  
Author(s):  
Hassan Saeed Khan ◽  
Riccardo Paolini ◽  
Mattheos Santamouris ◽  
Peter Caccetta
Keyword(s):  
Central Business District ◽  
Heat Fluxes ◽  
Urban Station ◽  
Advective Flux ◽  
Important Interaction ◽  
The Difference ◽  
Business District ◽  
Open Question ◽  
The City ◽  
Synoptic Circulation

There is no consensus regarding the change of magnitude of urban overheating during HW periods, and possible interactions between the two phenomena are still an open question, despite the increasing frequency and impacts of Heatwaves (HW). The purpose of this study is to explore the interactions between urban overheating and HWs in Sydney, which is under the influence of two synoptic circulation systems. For this purpose, a detailed analysis has been performed for the city of Sydney, while considering an urban (Observatory Hill), in the Central Business District (CBD), and a non-urban station in Western Sydney (Penrith Lakes). Summer 2017 was considered as a study period, and HW and Non-Heatwave (NHW) periods were identified to explore the interactions between urban overheating and HWs. A strong link was observed between urban overheating and HWs, and the difference between the peak average urban overheating magnitude during HWs and NHWs was around 8 °C. Additionally, the daytime urban overheating effect was more pronounced during the HWs when compared to nighttime. The advective flux was found as the most important interaction between urban overheating and HWs, in addition to the sensible and latent heat fluxes.

Walking Distances to and from Light-Rail Transit Stations

1996 ◽  
Vol 1538 (1) ◽  
pp. 19-26 ◽  
Author(s):  
Sean O'Sullivan ◽  
John Morrall
Keyword(s):  
Central Business District ◽  
Design Guidelines ◽  
Walking Distance ◽  
Light Rail ◽  
Rail Transit ◽  
Light Rail Transit ◽  
Bus Stop ◽  
Business District ◽  
The Relationship ◽  
The City

A quantifiable basis for developing design guidelines for pedestrian access to light-rail transit (LRT) stations is provided for planners based on observations in Calgary, Canada. Calgary's LRT system, which began operations in 1981, has been operating for long enough for walking patterns to and from its stations to become established. Interviews were conducted with 1,800 peak-hour LRT users about the origins and destinations of their LRT trips. Those who walked to or from a station were asked to point out on a map their approximate origins or destinations. The distances were then measured off the maps. Walking distance guidelines were developed for central business district (CBD), transfer and local stations. Catchment area maps were produced, and the relationship between reported walking time and measured walking distance was calculated. Also compared are the walking distances at LRT stations and the walking distances at bus stops. The research strongly indicates that people walk farther to reach an LRT station than a bus stop. Using bus walking standards would result in an underestimate of LRT walking distances by about half. For the city of Calgary the average walking distance to suburban stations is 649 m with a 75th-percentile distance of 840 m. At CBD stations the average walking distance is 326 m and the 75th-percentile distance is 419 m.

scholarly journals Analyzing the Issue of On-street Parking in Commercial Areas: A Case Study of the City of Hyderabad, Pakistan

2018 ◽  
Vol 01 (02) ◽  
pp. 01-09
Author(s):  
Baig Farrukh ◽  
Sahito Noman ◽  
Bano Arsla ◽  
Keyword(s):  
Traffic Congestion ◽  
Urban Areas ◽  
Survey Methodology ◽  
Greenhouse Gas Emission ◽  
Central Business District ◽  
Rapid Urbanization ◽  
Analysis Technique ◽  
Business District ◽  
Public Views ◽  
The City

In developing countries, rapid urbanization has created an enormous pressure on land use, infrastructure and transportation. The fast growing ratio of motorized vehicles in urban areas is the main cause of environmental degradation. Almost 80% of the greenhouse gas emission is from vehicles in cities. In the city centers, on-street parking is considered the major cause of traffic congestion. The aim of this study was to evaluate the problems of on-street parking and disorderly parking at Central Business District (CBD) of Hyderabad city. The field survey methodology was adopted to perceive the current traffic problems in the city center and traffic count survey was carried out in both peak and off hours. The data was analyzed using descriptive statistics frequency analysis technique with the help of Statistical Package for the Social Sciences (SPSS). The findings revealed that increasing number of vehicles, on-street parking, improper parking, encroachment, inadequate parking space and poor condition of roads are the main causes of traffic congestion. The study bridges up the research gap of determining public views about on-street parking challenges in the context of Hyderabad, Pakistan and provides statistical results which may equally be adapted by policy makers and transportation planners in order to improve the traffic situation.

scholarly journals Central Business District of St. Petersburg 1869–2017

2019 ◽  
Vol 3 (1) ◽  
pp. 23-39
Author(s):  
Константин Аркадьевич Холодилин ◽  
Леонид Эдуардович Лимонов
Keyword(s):  
Spatial Distribution ◽  
Market Economy ◽  
Substantial Reduction ◽  
Central Business District ◽  
Soviet Period ◽  
City Center ◽  
North East ◽  
The North ◽  
Business District ◽  
The City

The city center is at the core of urban and housing economics. Many models crucially depend on it. In a market economy, the location of urban amenities, especially eating establishments, closely correlates with that of the city center and, more generally, with the Central Business District (CBD). In a centrally planned economy, the spatial distribution of those amenities is determined by the central planner and can differ significantly from a market-based distribution. Using the case of St. Petersburg (Russia), we investigate changes in the spatial distribution of eating establishments resulting from the transition from a market economy to a centrally planned one and then again to a market economy. In addition, we explore the shifts of the city center between 1895 and 2017 using eating establishments as a proxy. The spatial distribution is analyzed using a 2-D kernel density estimation. We find evidence for a substantial reduction and dispersion of eating establishments during the Soviet period. We also establish that after the October 1917 Revolution the city center of St. Petersburg moved several kilometers to the north-east.

scholarly journals Sense of Safety and Planning and Design Policies

2018 ◽  
Author(s):  
Rangajeewa Ratnayake ◽  
Naduni Wickramaarachchi ◽  
Julie Rudner
Keyword(s):  
Central Business District ◽  
Building Design ◽  
City Centre ◽  
Personal Safety ◽  
The Past ◽  
Planning And Design ◽  
Planning Development ◽  
Business District ◽  
The City ◽  
City Centres

Planning, development and design policies influence sense of safety of people touse the City centre or Central Business District (CBD) and therefore city centres can becomeactive and vibrant during the day and night. This paper reviews past and present planningpolicies relevant for feeling of personal safety in the context of housing, retail, amenities,street infrastructure, building design and transportation aspects. The past development trendsshow that insignificant attention has been paid to people's sense of safety when using publicspaces, particularly at night, a factor identified important in creating attractive city centressince 1960s. Local plans primarily refer to safety in relation to roads, accessibility andworkability. Local policies also show the dominance of CCTV since the 1990s has becomeubiquitous, but changes to sense of safety in urban spaces now may actually be a betterreflection of planning and design decisions made over the past 20 years.

scholarly journals Perpanjangan Lintas Dan Rencana Pola Operasi Kereta Api Lembah Anai Wilayah Divre II Sumatera Barat

2021 ◽  
Vol 23 (1) ◽  
pp. 72-78
Author(s):  
Eka Arista Anggorowati ◽  
Anggun Mega Nurfadhilla ◽  
Ari Widi Wibowo ◽  
Enrico Pria Anggana
Keyword(s):  
Public Transportation ◽  
Stated Preference ◽  
Central Business District ◽  
Rail Transportation ◽  
City Center ◽  
Transportation Services ◽  
Potential Demand ◽  
Business District ◽  
The City ◽  
Center Increase

ABSTRACTThe growing population and the shifting of population movement from the suburbs to the city center will make the demand for rail transportation services to the city center increase. To deal with this problem, it is necessary to study the analysis related to potential demand, the need for the number of facilities and new operating patterns for the extension of railroad relations. The results of the research showed that the potential demand was obtained from the calculation of actual and potential demand, where the actual demand was obtained by carrying out a survey on train from 644 respondents, 85.5% agreed with the extension of the Lembah Anai Railway relation and as many as 88% were willing to choose the train mode. In the potential demand analysis, a stated preference survey was carried out in Pauh District, from 2636 respondents, 86.7% were willing to switch from private vehicles and public transportation to the railroad mode. Based on the analysis of the calculation of facility requirements according to the demand, 1 trainset is ready for operation to accommodate the community to carry out daily mobilization to the center of the Central Business District (CBD) in Padang City.Keywords: Demand, pattern of rail operations, Railway Travel Graph (RTG) ABSTRAK Berkembangnya jumlah penduduk dan semakin bergesernya pergerakan penduduk dari pinggiran kota menuju pusat kota akan membuat semakin meningkatnya jumlah permintaan akan jasa angkutan kereta api sampai menuju pusat kota. Untuk menunjang permasalahan tersebut perlu dikaji analisis terkait potensi demand, kebutuhan jumlah sarana dan pola operasi baru perpanjangan relasi kereta api. Hasil penelitian menunjukkan potensi demand didapatkan dari perhitungan demand aktual dan potensial, dimana demand aktual dilakukan survey on train dari 644 responden 85,5% setuju dengan adanya perpanjangan relasi Kereta Api Lembah Anai dan sebanyak 88% bersedia untuk memilih moda kereta api. Pada analisis demand secara potensial dilakukan survey stated preference di Kecamatan Pauh dari 2636 responden 86,7% bersedia untuk pindah dari moda kendaraan pribadi dan angkutan umum ke moda kereta api. Berdasarkan analisis perhitungan kebutuhan sarana sesuai dengan demand didapatkan 1 trainset Siap Operasi untuk mengakomodir masyarakat melakukan mobilisasi sehari-hari menuju pusat Central Business District (CBD) di Kota Padang.Kata kunci : Demand, kebutuhan sarana, pola operasi kereta api, Grafik Perjalanan Kereta Api (Gapeka)

The Central Business District in American Cities

2018 ◽  
Author(s):  
Emily Remus
Keyword(s):  
20Th Century ◽  
Traffic Congestion ◽  
Central Business District ◽  
Urban Life ◽  
Land Values ◽  
White Families ◽  
Race And Class ◽  
Business District ◽  
American Cities ◽  
The City

The central business district, often referred to as the “downtown,” was the economic nucleus of the American city in the 19th and 20th centuries. It stood at the core of urban commercial life, if not always the geographic center of the metropolis. Here was where the greatest number of offices, banks, stores, and service institutions were concentrated—and where land values and building heights reached their peaks. The central business district was also the most easily accessible point in a city, the place where public transit lines intersected and brought together masses of commuters from outlying as well as nearby neighborhoods. In the downtown, laborers, capitalists, shoppers, and tourists mingled together on bustling streets and sidewalks. Not all occupants enjoyed equal influence in the central business district. Still, as historian Jon C. Teaford explained in his classic study of American cities, the downtown was “the one bit of turf common to all,” the space where “the diverse ethnic, economic, and social strains of urban life were bound together, working, spending, speculating, and investing.” The central business district was not a static place. Boundaries shifted, expanding and contracting as the city grew and the economy evolved. So too did the primary land uses. Initially a multifunctional space where retail, wholesale, manufacturing, and financial institutions crowded together, the central business district became increasingly segmented along commercial lines in the 19th century. By the early 20th century, rising real estate prices and traffic congestion drove most manufacturing and processing operations to the periphery. Remaining behind in the city center were the bulk of the nation’s offices, stores, and service institutions. As suburban growth accelerated in the mid-20th century, many of these businesses also vacated the downtown, following the flow of middle-class, white families. Competition with the suburbs drained the central business district of much of its commercial vitality in the second half of the 20th century. It also inspired a variety of downtown revitalization schemes that tended to reinforce inequalities of race and class.

Parades and Processions: Brisbane's War-time Patriotism

2001 ◽  
Vol 8 (1) ◽  
pp. 65-76
Author(s):  
Delyse Ryan
Keyword(s):  
World War I ◽  
Central Business District ◽  
World War ◽  
Public Displays ◽  
Community Organisations ◽  
Business District ◽  
New Recruits ◽  
The City

Parades and processions were a major feature of life in Brisbane during World War I. Parades typically passed through the central business district turning the entire city into an urban backdrop for a public perfonnance. Recruitment was a major issue for Australia during World War I and military parades featured prominently in the life of the city. TheBrisbane Courierdescribed the recruiting marches as ‘long columns of robust, khaki-clad manhood’ which ‘have swung down the street, with soldierly gait, setting a bright, sturdy example to shirkers to “go and get their dungarees on”’. By positioning the soldiers as heroic, well-built, and positive, processions helped to generate public enthusiasm for the war and to convince prospective recruits to join up. The message to the community is clear: if our soldiers are fit and spirited, then the Allies will win the war. But the marches were not only a way to rally new recruits, they also acted as public displays of civic solidarity. Parades gave citizens the opportunity to demonstrate their patriotic feelings. ‘Patriotism’, whether for King, country, or for ‘our boys’, was the dominant performative concept. In this way, governments, community organisations, theatrical managements, and the residents themselves contributed to the establishment of certain war-time traditions for the representation of civic patriotism on the streets in Australia.

Associating street-network centrality with spontaneous and planned subcentres

Urban Studies ◽  
2020 ◽  
pp. 004209802093130
Author(s):  
Burcu H. Ozuduru ◽  
Chris J. Webster ◽  
Alain J. F. Chiaradia ◽  
Eda Yucesoy
Keyword(s):  
A Priori ◽  
Central Business District ◽  
Street Network ◽  
Economic Activities ◽  
Topological Graph ◽  
Urban Dynamics ◽  
Planning Policy ◽  
Different Types ◽  
Business District ◽  
The City

Scientific studies have long demonstrated how economic activities regularly distribute themselves within a city in response to geographical centrality. Following the growing interest in network geography in understanding urban dynamics, rather than measuring centrality (accessibility) by a priori knowledge of central business district (CBD) locations, in this article we measure the centrality of each link in a city’s street network, modelled as a topological graph. We use this to understand clustering behaviour of firms by industrial classification in the city of Ankara, Turkey. Our underlying hypothesis rests on the assumption that the geometry and topology of an urban grid contains accessibility information about the distribution of agglomeration economies and diseconomies, and that different types of enterprises are sensitive to this distribution in various ways. Among other things, the results of the study allow us to predict the evolution of what we call candidate centres (locations that could, by virtue of their connectivity footprint, become subcentres), actual subcentres and CBD functions in response to changes in a city’s street network. Decoding how commercial cluster locations interact with the detailed pattern of street-network-based centralities will be helpful for urban planning policy, in particular for commercial zoning decisions such as expanding CBDs and identifying locations for new subcentres that have an acceptable chance of success.

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