scholarly journals Influence of Nairobi’s Biophysical Characteristics on its Vulnerability to a Changing Climate

2020 ◽  
Vol 2 (2) ◽  
pp. 64-85
Author(s):  
Sunday Julius Abuje ◽  
Bernard Moirongo Otoki ◽  
Bernard Mugwima Njuguna
Keyword(s):  
Urban Form ◽  
Urban Areas ◽  
Global Climate ◽  
Regional Climate ◽  
Central Business District ◽  
Space Networks ◽  
Heat Risk ◽  
Business District ◽  
Expert Ranking ◽  
The City

Urban areas experience exacerbated impacts of the regional climate variability because of their form characteristics such as imperviousness of surfaces, building density and distribution of open spaces. These are further confounded by geographical aspects such as topography, soil types, and vegetation types. Nairobi city is increasingly exposed to flood and heat risk as an aggregation of its urban form and the changing global climate. The paper sought to establish the influence of Nairobi’s biophysical characteristics on its vulnerability to both flooding and heat risks. The paper used a descriptive research design augmented with Geographic Information Systems to spatially model the landcover, soil drainage, topography, green space networks, and population density characteristics at the sub-location level. Vulnerability indices were developed using the expert ranking system and used to determine the vulnerability of the different sub-locations. The findings revealed a vulnerability pattern close to the historically segregated planning of the city. The central and eastern parts of the city exhibit high vulnerability while the western, northwestern, and southern parts of the city display moderate to low vulnerability. The paper recommends that adapting existing neighbourhoods and proactive planning of new neighbourhoods uses the ecosystem-based approach. This to entail decentralization of smaller green spaces, redesign of road medians for water management, re-specification of street vegetation species to incorporate a mix of deciduous and evergreen trees and incorporating eco-roofs and walls in high-density developments like the Central Business District.

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 The impact on urban accessibility conditions of a proposed cableway line in the city of Manizales, Colombia

2021 ◽  
Vol 51 (51) ◽  
pp. 95-107
Author(s):  
Jorge Alberto Montoya ◽  
Juan Camilo Aguilera ◽  
Diego Alexander Escobar
Keyword(s):  
Urban Areas ◽  
Central Business District ◽  
Environmentally Sustainable ◽  
Public Transport System ◽  
Average Travel Time ◽  
Urban Accessibility ◽  
Business District ◽  
The Impact ◽  
The City

Abstract Due to the increased tendency to use private transport in urban areas of Manizales and Villamaría municipalities, it is intended to include alternative modes of transport that are more time-efficient and environmentally sustainable to improve the inhabitants’ quality of life. This article aims to analyse the inclusion impact of a sustainable public transport system, such as a new cableway line in the city connecting the Central Business District (CBD) with Ciudadela del Norte district, measuring overall average accessibility for the current and future scenario. This establishes the average travel time and the savings in terms of time shown as a percentage that these modes of transport would create in the population displacement and also which inhabitants are the most likely to benefit.

scholarly journals Urban attractors: Discovering patterns in regions of attraction in cities

PLoS ONE ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. e0250204
Author(s):  
May Alhazzani ◽  
Fahad Alhasoun ◽  
Zeyad Alawwad ◽  
Marta C. González
Keyword(s):  
Urban Areas ◽  
Clustering Algorithm ◽  
Statistical Significance ◽  
Central Business District ◽  
Statistical Significance Testing ◽  
Spatial Spread ◽  
The Road ◽  
On The Road ◽  
Business District ◽  
The City

Understanding the dynamics by which urban areas attract visitors is important in today’s cities that are continuously increasing in population towards higher densities. Identifying services that relate to highly attractive districts is useful to make policies regarding the placement of such places. Thus, we present a framework for classifying districts in cities by their attractiveness to daily commuters and relating Points of Interests (POIs) types to districts’ attraction patterns. We used Origin-Destination matrices (ODs) mined from cell phone data that capture the flow of trips between each pair of places in Riyadh, Saudi Arabia. We define the attraction profile for a place based on three main statistical features: The number of visitors a place received, the distribution of distance traveled by visitors on the road network, and the spatial spread of locations from where trips started. We used a hierarchical clustering algorithm to classify all places in the city by their features of attraction. We discovered three main types of Urban Attractors in Riyadh during the morning period: Global, which are significant places in the city, Downtown, which contains the central business district, and Residential attractors. In addition, we uncovered what makes districts possess certain attraction patterns. We used a statistical significance testing approach to quantify the relationship between Points of Interests (POIs) types (services) and the patterns of Urban Attractors detected.

scholarly journals Implementasi Teori Asiatica Euphoria McGee Dalam Pengembangan Zona Industri Studi Kasus: Desa Bajera, Kecamatan Selemadeg, Kabupaten Tabanan, Bali

2020 ◽  
Vol 2 (1) ◽  
pp. 1-8
Author(s):  
Ni Putu Suda Nurjani
Keyword(s):  
Urban Areas ◽  
Central Business District ◽  
Industrial Estates ◽  
The Core ◽  
Basic Transformation ◽  
Core Areas ◽  
To Come ◽  
Business District ◽  
Industrial Zones ◽  
The City

Cities in Indonesia were initially formed through the transformation of various influences of power and power. Strength as an identity that can attract the outermost area to come to an area, while power lies in the personal strength of man as the leader of a region. These conditions have an impact on the development of the world of industry in the country. Transforming traditional city structures into a modern city, not only physically but also a basic transformation towards the concept of urbanity of its citizens. The urban village as an element of the city which is the identity of a region, still holds a traditional urbanity value system that is different from the conception of modern urbanity. This condition affects the development of industrial zones, such as what happened in Bajera Village, Selemadeg District, Tabanan Regency. The heterogeneity of the population of Bajera Village is one of the biggest indicators of the formation of an industrial zone. The existence of a transportation mode that connects the outermost areas of Bajera with the Core of Bajera Village is another driving factor that influences the growth of industrial estates. This study tried to explain descriptively qualitatively, a fact of regional development based on Asiatica Euphoria McGee's theory. The special attraction in the core of Bajera Village encourages residents in the outermost areas of Bajera to migrate to the core areas of Bajera Village with the aim of staying temporarily and to settle for long periods of time. This phenomenon is in line with the theory put forward by McGee, that the CBD (central business district) is formed due to the attraction of the core (core) and the ease of modes of transportation from peri urban areas to the CBD. This condition makes Bajera village the center of industrial and trade areas in the Selemadeg Barat region, Tabanan, Bali.

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 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.

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)

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