scholarly journals Develop an Integrated Conceptual Model to Determine Ecological Buffers in Urban Streams

Author(s):  
Amin Sarang ◽  
Behnam Andik ◽  
Mojtaba Ardestani ◽  
Farnoosh Moradizadeh Kermani

Abstract For many years, buffers are playing an important role for protecting as well as exploiting urban streams environment. In 40s & early 50s Tehran with 5 urban streams which flow from northern mountains to southern deserts of the city had been created unique aesthetic nature. At that time no specific environmental regulatory implemented by the government but since lack of any disturbing population and any urban development, the urban nature was self protecting. But in recent decades a huge development occurs leading to impaired streams which no conventional buffers such as static quantitative buffer zone and qualitative buffer zone. This paper is deeply investigating ecological restoration and promoting a new conceptual model as ecological buffer zone for Urban Streams. This buffer is agile, dynamic, and variable in both stream directions (longitudinal and latitudinal) consist of many layers such as biological (both fauna and flora), geotechnical, artificial infrastructure buffer, legal, historical, social, economical and etc Layers. If this model properly implemented longtermly will protect current urban nature and even enhance the environment eventually, partially, and gradually reverse to their historical natures. Ecological should be tailored for each individual river and stream based on few rules, tools and techniques. The paper is based on three years extensive research study for all 5 major urban streams in Tehran and implementing on Farahzad upstream specifically. It elaborates how to define different above-mentioned layers and finally how to integrate all together. EB has been currently implemented in Tehran urban streams by the municipality.

Land ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 33
Author(s):  
Palmyra Repette ◽  
Jamile Sabatini-Marques ◽  
Tan Yigitcanlar ◽  
Denilson Sell ◽  
Eduardo Costa

Since the advent of the second digital revolution, the exponential advancement of technology is shaping a world with new social, economic, political, technological, and legal circumstances. The consequential disruptions force governments and societies to seek ways for their cities to become more humane, ethical, inclusive, intelligent, and sustainable. In recent years, the concept of City-as-a-Platform was coined with the hope of providing an innovative approach for addressing the aforementioned disruptions. Today, this concept is rapidly gaining popularity, as more and more platform thinking applications become available to the city context—so-called platform urbanism. These platforms used for identifying and addressing various urbanization problems with the assistance of open data, participatory innovation opportunity, and collective knowledge. With these developments in mind, this study aims to tackle the question of “How can platform urbanism support local governance efforts in the development of smarter cities?” Through an integrative review of journal articles published during the last decade, the evolution of City-as-a-Platform was analyzed. The findings revealed the prospects and constraints for the realization of transformative and disruptive impacts on the government and society through the platform urbanism, along with disclosing the opportunities and challenges for smarter urban development governance with collective knowledge through platform urbanism.


2016 ◽  
Vol 1 (1) ◽  
pp. 5
Author(s):  
Syed Faraz Jafri ◽  
Khawaja Sheeraz ◽  
Kamran Khan ◽  
Zubair Iqbal Rao ◽  
Asif Abbasi

It is an undoubted truth that the system oftransportation planning is associated with the key parameters oftraffic safety. This focuses the implementation of designedpolicies and standards. The relationship between road trafficaccidents and applied infrastructure facilities is proportional.This imparts the available geometric design considerations,pavement structure, environmental, human and vehiclecontributory factors. Traffic accidents are also affected onvarious 24hrs timings of the day and classified as dawn, daylight,dusk and dark in different research studies. Each time of the dayhas its own characteristics featuring with the driverperformance, site detection, visual acquaintance and informationprovided for decision sight distance.Accidents occurring in various timings with respect to differenttypes of road users are presented in this research. Possible rootcauses with significant recommended measures are the extensivedimensions of this research study. On the whole, three years datarecord is utilized in the analytical part as well. For the sake ofreason, macro analysis tools and techniques are used in order tojustify the results. The results are also formulated highlightingresponsible factors and liaison with the accidents carried out inmorning and dark.


2019 ◽  
pp. 490-508
Author(s):  
Marjaneh Farhangi

We have witnessed vast economic, social, technological, and environmental changes that have influenced patterns of urbanization. Through all these years urban planning has also experienced major reforms. During last two decades, with emergence of knowledge economy, it is claimed that the nature of urban development has changed; this new notion of development is called knowledge-based urban development. As there is not clear methodology for directing cities development process, this chapter aims to formulate a conceptual model for cities leadership towards knowledge-based urban development. This chapter considers the city of Isfahan, Iran as a case study. Finally, a model is proposed according to literature review and using ANP method for analyzing the data gathered from the context. This conceptual model has also prioritized effective factors for KBUD.


Check List ◽  
2010 ◽  
Vol 6 (1) ◽  
pp. 045 ◽  
Author(s):  
Éder André Gubiani ◽  
Vanessa Salete Daga ◽  
Vitor André Frana ◽  
Weferson Júnio da Graça

In the Toledo metropolitan area there are many small headwater streams which suffer the influence of the urban development (pollution, deforestation, introduction of non-native species). The list of fish species in these sites is important for the knowledge on biodiversity in similar environments. Samples were taken bimonthly from October 2007 to February 2009 in three sites (headwater, middle and mouth) along of the three streams within urbanization gradient in the city of Toledo. A total of 27 fish species ascribed to 18 Genera, six Orders and 11 Families were collected, among which four species are non-native species, and seven are probably new to the science.


Author(s):  
Marjaneh Farhangi

We have witnessed vast economic, social, technological, and environmental changes that have influenced patterns of urbanization. Through all these years urban planning has also experienced major reforms. During last two decades, with emergence of knowledge economy, it is claimed that the nature of urban development has changed; this new notion of development is called knowledge-based urban development. As there is not clear methodology for directing cities development process, this chapter aims to formulate a conceptual model for cities leadership towards knowledge-based urban development. This chapter considers the city of Isfahan, Iran as a case study. Finally, a model is proposed according to literature review and using ANP method for analyzing the data gathered from the context. This conceptual model has also prioritized effective factors for KBUD.


2020 ◽  
Vol 20 (2) ◽  
pp. 119-124
Author(s):  
Rahmadya Trias Handayanto ◽  
Herlawati Herlawati

Abstract   To overcome the COVID-19 outbreak, the government did not carry out the lockdown policy (regional quarantine policy) but implemented the Large-Scale Social Restrictions (PSBB) policy. Starting from the capital city of Jakarta, this policy was followed by other regions. Bekasi City as a buffer zone of Jakarta immediately implemented the PSBB policy since this area is close to Jakarta and is feared to be affected by the Jakarta region which is a red zone with almost half of Indonesian COVID-19 cases are in the Jakarta area. Many people do not agree with the PSBB, but in order to keep the economic growth as well as to overcome the outbreak, the government does not adopt a regional quarantine policy. To determine the effectiveness of PSBB in the city of Bekasi, this study tried to use the Susceptible-Infected-Recovered (SIR) model to measure the spread rate of COVID-19. The results showed a decrease in the number of infected cases with beta and gamma were 0.071 and 0.05, respectively, and the epidemic was predicted to end in June 2020.   Keywords: coronavirus, epidemic, pandemic, regional quarantine policy, Bekasi City   Abstrak   Dalam mengatasi wabah COVID-19, pemerintah tidak melakukan karantina wilayah (lock down) tetap menggunakan kebijakan Pembatasan Sosial Berskala Besar (PSBB). Dimulai dari ibukota Jakarta, kebijakan ini diikuti oleh wilayah lainnya. Kota Bekasi sebagai wilayah penyangga Jakarta segera menerapkan kebijakan PSBB mengingat wilayah ini berdekatan dengan Jakarta dan dikhawatirkan terpengaruh dengan kota Jakarta yang merupakan zona merah dengan hamper separuh kasus COVID-19 ada di wilayah Jakarta. Banyak pihak yang mendukung dan juga kurang setuju dengan PSBB, namun agar perekonomian tetap berjalan dan wabah dapat diatasi, pemerintah tidak mengambil kebijakan karantina wilayah. Untuk mengetahui efektifitas PSBB di kota Bekasi, penelitian ini mencoba menggunakan model Susceptible-Infected-Recoverd (SIR) untuk mengukur laju penyebaran COVID-19. Hasilnya menunjukan adanya laju penurunan kasus terinfeksi dengan beta dan gamma beruturut-turut sebesar 0,071 dan 0,05 dan diprediksi akan berakhir di bulan Juni 2020.   Kata kunci: virus corona, epidemik, pandemik, karantina wilayah, Bekasi City


2016 ◽  
Vol 6 (1) ◽  
pp. 5
Author(s):  
Syed Faraz Jafri ◽  
Khawaja Sheeraz ◽  
Kamran Khan ◽  
Zubair Iqbal Rao ◽  
Asif Abbasi

It is an undoubted truth that the system oftransportation planning is associated with the key parameters oftraffic safety. This focuses the implementation of designedpolicies and standards. The relationship between road trafficaccidents and applied infrastructure facilities is proportional.This imparts the available geometric design considerations,pavement structure, environmental, human and vehiclecontributory factors. Traffic accidents are also affected onvarious 24hrs timings of the day and classified as dawn, daylight,dusk and dark in different research studies. Each time of the dayhas its own characteristics featuring with the driverperformance, site detection, visual acquaintance and informationprovided for decision sight distance.Accidents occurring in various timings with respect to differenttypes of road users are presented in this research. Possible rootcauses with significant recommended measures are the extensivedimensions of this research study. On the whole, three years datarecord is utilized in the analytical part as well. For the sake ofreason, macro analysis tools and techniques are used in order tojustify the results. The results are also formulated highlightingresponsible factors and liaison with the accidents carried out inmorning and dark.


Afrika Focus ◽  
2013 ◽  
Vol 26 (2) ◽  
pp. 9-29
Author(s):  
William Rollason

In this paper I explore tensions and conflicts over poverty reduction and urban development in Kigali, Rwanda’s capital in terms of theories of performativity. On one hand, motorcycle taxis offer large numbers of young men good livelihoods – reflecting the government of Rwanda’s stated commitment to poverty reduction, especially amongst youth; on the other, motorcycle taxi drivers suffer harassment at the hands of city authorities and police, who are keen to eradicate motorcycle taxis from the urban scene altogether. I interpret this tension as a conflict over the appropriate performance of development in the city; I argue that in pursuit of urban development, the city itself becomes an image, projected in order to attract the investment which will give body to the simulated spectacle that Kigali present. Conflicts between the city and motorcycle taxi drivers erupt because motorcycle taxis cannot perform to the aesthetic standards of the new Kigali. In conclusion, I suggest that the rendition of Kigali’s development as image has broader lessons for studies of development in general. Specifically, these conflicts expose the operation of images and their performance as political resources, conferring intelligibility and legitimacy in the spectacle of national development.


2016 ◽  
Vol 35 (4) ◽  
pp. 733-751 ◽  
Author(s):  
Jennifer L Tucker

This article discusses the affective politics enabling urban development in Ciudad del Este, Paraguay, a young frontier boomtown where the volume of the extralegal transborder trade once exceeded the GDP of the entire nation. Against stereotypes of the city as lawless, I demonstrate how governing practices work through affect and emotion. I argue that local strategies of governing have temporal and spatial dimensions that produce an affective field of uncertainty for hawkers and street vendors. Paradoxically, the legal and spatial ambiguities that produce uncertainty as a disciplining structure of feeling are also the grounds from which vendors make claims to urban space. Yet vendors develop their own registers of need and entitlement through a politics of affective interconnection. This paper contributes to debates on the government of precarity and to geographical studies on emotion and affect by exploring how this dialectics of uncertainty enables exclusionary urban development.


NALARs ◽  
2017 ◽  
Vol 16 (1) ◽  
pp. 61
Author(s):  
Ari Widyati Purwantiasning

ABSTRAK.Saat ini, perkembangan bangunan-bangunan baru di Jakarta berkembang sangat cepat. Kondisi ini membawa dampak negatif bagi beberapa titik di kawasan ibukota Jakarta, terutama di kawasan Kota Lama Jakarta yang dikenal sebagai kawasan bersejarah di Kota Jakarta. Beberapa bangunan tua di dalam kawasan ini dikenal telah terbengkalai puluhan tahun, dan ini menjadi beban bagi kota Jakarta sebagai kota metropolitan. Bangunan-bangunan tua tersebut telah diabaikan dan terbengkalai hingga puluhan tahun karena tidak difungsikan sebagaimana mestinya, hal ini dikarenakan bangunan-bangunan tua tersebut sudah tidak layak pakai karena utilitas dan infrastruktur yang tidak memadai. Mengacu pada kondisi di atas, sudah selayaknya dipikirkan tentang bagaimana memelihara bangunan-bangunan tua bersejarah tersebut, apakah harus dimusnahkan atau dijaga kelestariannya. Keduanya tentunya harus dipertimbangkan secara baik-baik dan menguntungkan serta bermanfaat bagi semua pihak, khususnya bagi pemilik bangunan, dengan menjaga bangunan tua bersejarah tersebut tanpa harus mencari sumber pendanaan dari sumber lain. Tulisan ini akan mengeksplor dan memberikan solusi terbaik bagi permasalahan ini dan mencari alternatif solusi bagaimana metode yang tepat untuk memelihara bangunan tua bersejarah di Jakarta. Dengan metode yang tepat diharapkan keberadaan bangunan-bangunan tua bersejarah di Jakarta dapat menjadi identitas bagi kota Jakarta dan menjadi peran yang penting dalam perkembangan kota yang seharusnya terbentuk dari peradaban sejarah. Tulisan ini merupakan bagian dari penelitian program hibah Kementrian Riset dan Teknologi Dirjen Pendidikan Tinggi yang telah dimulai sejak tahun 2012 dengan tiga fokus penelitian dan pengamatan yang berbeda tentang konservasi dan revitalisasi. Penelitian ini merupakan skema akhir dari roadmap penelitian kami dan akan memberikan sebuah jawaban solusi mengenai berbagai permasalahan yang muncul dari tiga penelitian sebelumnya. Kata Kunci: metode, terbengkalai, fungsional, bangunan tua bersejarah, kawasan kota lama Jakarta ABSTRACT. Recently, the development of new buildings in Jakarta is increasing rapidly. This condition has a negative impact for some spots within Jakarta, particularly within Jakarta Old Town which is well known as a historical area in Jakarta. Some old buildings within this area have been neglected for years and this become a burden for Jakarta as a metropolitan city. Those historical old buildings have been abandoned because they could not been functioned anymore, they have lack of utilities and infrastructures.Referring to the above condition, there should be a method to maintain those historical old buildings, either to keep it or to demolish it all. The maintenance should benefit all parties, particularly the owner of the buildings could maintain the buildings without searching other funding's source. This paper will explore and present what is the best solution for this matter, and what is the appropriate method to maintain all those historical old buildings, thus could be existed within Jakarta Old Town area. Historical area could become an identity of the city and would become important role in urban development, which formed from a historical civilization. This paper is a part of research study undertaken from Competition Research Grant Programme - The Minister of Higher Education that has been started from 2012 with 3 different focus and point of view about conservation and revitalization. This research is a final scheme from the roadmap, and will present an answer about many problems occurred in those 3 previous researches.Keywords: method, abandoned, functional, historical old buildings, Jakarta Old Town area


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