scholarly journals Security Assessment of Urban Areas through a GIS-Based Analysis of Lighting Data Generated by IoT Sensors

2020 ◽  
Vol 10 (6) ◽  
pp. 2174 ◽  
Author(s):  
Lavinia Chiara Tagliabue ◽  
Fulvio Re Cecconi ◽  
Nicola Moretti ◽  
Stefano Rinaldi ◽  
Paolo Bellagente ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Smart City ◽  
Urban Areas ◽  
Gis Mapping ◽  
Security Assessment ◽  
Urban Context ◽  
Street Lighting ◽  
Perceived Safety ◽  
Perceived Security ◽  
The City

The current perspective about urban development expects 70% of energy consumption will be concentrated in the cities in 2050. In addition, a growing density of people in the urban context leads to the need for increased security and safety for citizens, which imply a better lighting infrastructure. Smart solutions are required to optimize the corresponding energy effort. In developing countries, the cities’ lighting is limited and the lighting world map is strongly significant about the urban density of the different areas. Nevertheless, in territories where the illumination level is particularly high, such as urban contexts, the conditions are not homogenous at the microscale level and the perceived security is affected by artificial urban lighting. As an example, 27.2% of the families living in the city of Milan, ombardy Region, Italy, consider critical the conditions of lighting in the city during the night, although the region has diffused infrastructure. The paper aims to provide a local illuminance geographic information system (GIS) mapping at the neighborhood level that can be extended to the urban context. Such an approach could unveil the need to increase lighting to enhance the perceived safety and security for the citizens and promote a higher quality of life in the smart city. Lighting mapping can be matched with car accident mapping of cities and could be extended to perceived security among pedestrians in urban roads and green areas, also related to degradation signs of the built environment. In addition, such an approach could open new scenarios to the adaptive street lighting control used to reduce the energy consumption in a smart city: the perceived security of an area could be used as an additional index to be considered during the modulation of the level of the luminosity of street lighting. An example of a measurement set-up is described and tested at the district level to define how to implement an extensive monitoring campaign based on an extended research schema.

scholarly journals Direct measurement of the contribution of street lighting to satellite observations of nighttime light emissions from urban areas

2020 ◽  
pp. 147715352095846
Author(s):  
CCM Kyba ◽  
A Ruby ◽  
HU Kuechly ◽  
B Kinzey ◽  
N Miller ◽  
...  
Keyword(s):  
Confidence Interval ◽  
Satellite Imagery ◽  
Smart City ◽  
Urban Areas ◽  
Energy Use ◽  
Satellite Observations ◽  
Light Sources ◽  
Street Lighting ◽  
Nighttime Light ◽  
The City

Nighttime light emissions are increasing in most countries worldwide, but which types of lighting are responsible for the increase remains unknown. Also unknown is what fraction of outdoor light emissions and associated energy use are due to public light sources (i.e. streetlights) or various types of private light sources (e.g. advertising). Here we show that it is possible to measure the contribution of street lighting to nighttime satellite imagery using ‘smart city’ lighting infrastructure. The city of Tucson, USA, intentionally altered its streetlight output over 10 days, and we examined the change in emissions observed by satellite. We find that streetlights operated by the city are responsible for only 13% of the total radiance (in the 500–900 nm band) observed from Tucson from space after midnight (95% confidence interval 10–16%). If Tucson did not dim their streetlights after midnight, the contribution would be 18% (95% confidence interval 15–23%). When streetlights operated by other actors are included, the best estimates rise to 16% and 21%, respectively. Existing energy and lighting policy related to the sustainability of outdoor light use has mainly focused on street lighting. These results suggest an urgent need for consideration of other types of light sources in outdoor lighting policy.

Barriers and levers for implementing sustainable Nature-Based Solutions in cities

2021 ◽  
Author(s):  
Chloé Duffaut ◽  
Nathalie Frascaria-Lacoste ◽  
Pierre-Antoine Versini
Keyword(s):  
Urban Areas ◽  
Large Scale ◽  
Project Managers ◽  
Global Changes ◽  
Human Beings ◽  
Urban Context ◽  
Urban Plan ◽  
Education And Awareness ◽  
Awareness Raising ◽  
The City

<p>Hydro-meteorological risks are increasing and this could be due to global changes. These risks are particularly important in the urban context where most human beings live. Indeed, the impervious surfaces present in cities increase the risk of flooding, for example. Nature-Based Solutions can help to reduce these risks by creating permeable soils or storing water while promoting biodiversity. In this context, it is essential to understand what hinders the development and sustainability of these Nature-based Solutions in the city and what could help to deploy them on a large scale. For this purpose, various professionals working on Nature-Based Solutions in the city in France, were interviewed between 2020 and 2021, both in the academic and operational sectors, or even at the interface between the two: researchers in ecology or hydrology, IUCN (International Union for Conservation of Nature) project manager, project managers at the Regional Biodiversity Agency, director and natural environment manager of a watershed union, agro-economists engineer among others. They were asked what are the barriers and potential opportunities for Nature-Based Solutions implementation and sustainability in city. By analysing their answers, it emerges that the obstacles are more often cultural, political or financial than technical. The potential levers often mentioned are education and awareness-raising at all levels, especially for elected officials and the general public. Regulations such as the PLU (Local Urban Plan) and new funding for more natural spaces in the city also seem to be means of promoting Nature-based Solutions in urban areas. These interviews with diverse professionals directly involved in Nature-Based Solutions in cities allow to give real courses of action to be taken to democratize these Solutions throughout the French territory, or even internationally, and therefore ultimately reduce the risks of hydro-meteorology. This is one of the objectives of the French ANR project EVNATURB (Assessment of ecosystem performance of a renaturation of the urban environment), in which this study has been carried out.</p>

scholarly journals Perancangan Kawasan Perkotaan Di Pulau Bali Sebagai Konektivitas Industri Pariwisata Yang Terintegrasi Pada Sistem ‘’Smart City Development’’

2020 ◽  
Vol 2 (1) ◽  
pp. 93-97
Author(s):  
I Made Agus Mahendra
Keyword(s):  
Smart City ◽  
Urban Areas ◽  
Spatial Vision ◽  
Development Planning ◽  
Tourism Industry ◽  
City Development ◽  
City Region ◽  
Environmental Goals ◽  
Almost All ◽  
The City

City Development Planning can be described as a decision-making process to realize economic, social, cultural and environmental goals through the development of a spatial vision, strategies and plans, and the application of a set of policy principles, tools, institutional participatory mechanisms, and regulatory procedures. Connectivity between cities is needed for a Bali island which is the best tourism destination in Indonesia. Good connectivity between cities can contribute greatly to tourism destinations in each city / region. In the future it will be a great work if the development of urban areas on the island of Bali is the integrated tourism industry path connectivity in the Smart City Development system. Smart city is a dream of almost all countries in the world both in the provincial and urban spheres. With Smart City, various kinds of data and information located in every corner of the city can be collected through sensors installed in every corner of the city, analyzed with smart applications, then presented according to user needs through applications that can be accessed by various types of gadgets. Through the gadget, users can also interactively become data sources, they send information to data centers for consumption by other users.

scholarly journals A new clustering and visualization method to evaluate urban energy planning scenarios

2018 ◽  
Author(s):  
Sara Torabi Moghadam ◽  
Silvia Coccolo ◽  
Guglielmina Mutani ◽  
Patrizia Lombardi ◽  
Jean Louis Scartezzini ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Urban Areas ◽  
Energy Demand ◽  
Planning Process ◽  
Energy Transition ◽  
Climatic Conditions ◽  
Energy Planning ◽  
Transition Strategies ◽  
Urban Energy ◽  
The City

The spatial visualization is a very useful tool to help decision-makers in the urban planning process to create future energy transition strategies, implementing energy efficiency and renewable energy technologies in the context of sustainable cities. Statistical methods are often used to understand the driving parameters of energy consumption but rarely used to evaluate future urban renovation scenarios. Simulating whole cities using energy demand softwares can be very extensive in terms of computer resources and data collection. A new methodology, using city archetypes is proposed, here, to simulate the energy consumption of urban areas including urban energy planning scenarios. The objective of this paper is to present an innovative solution for the computation and visualization of energy saving at the city scale.The energy demand of cities, as well as the micro-climatic conditions, are calculated by using a simplified 3D model designed as function of the city urban geometrical and physical characteristics. Data are extracted from a GIS database that was used in a previous study. In this paper, we showed how the number of buildings to be simulated can be drastically reduced without affecting the accuracy of the results. This model is then used to evaluate the influence of two set of renovation solutions. The energy consumption are then integrated back in the GIS to identify the areas in the city where refurbishment works are needed more rapidly. The city of Settimo Torinese (Italy) is used as a demonstrator for the proposed methodology, which can be applied to all cities worldwide with limited amount of information.

scholarly journals Penerangan Jalan Umum Tenaga Surya: Studi Kasus di Kota Pangkalpinang

2019 ◽  
Vol 16 (2) ◽  
pp. 76
Author(s):  
Andika Febrianto ◽  
Wahri Sunanda ◽  
Rika Favoria Gusa
Keyword(s):  
Light Intensity ◽  
Urban Areas ◽  
Solar Panels ◽  
Street Lighting ◽  
Led Lights ◽  
The City

This research was conducted to design public street lighting photovoltaic, based on SNI 7391:2008 concerning specifications of public street lighting in urban areas with several parameters that were considered by poles, lights used, intensity of light needed, number of lights needed and supporting equipment for public street lighting photovoltaic. Currently, Jenderal Sudirman road in the city of Pangkalpinang along 1.5 km uses electricity from PLN with 30 units of 150 watt SON lamps and 11 lux light intensity. The design obtained for street lighting photovoltaic while still meet SNI for light intensity, obtained supporting equipment for solar street lighting, namely 31 unit of 8 meter octagonal poles with specifications of 40 watt LED lights for each cross arm, 1 unit of 100 Wp solar panels, unit of 100 Ah VRLA batteries and 1 unit of solar charger controller (10A, 12V / 24V).

scholarly journals Greenhouse Gas Pollution Based on Energy use and its Mitigation Potential in the City of Surakarta, Indonesia

2020 ◽  
Vol 52 (1) ◽  
pp. 1
Author(s):  
Prabang Setyono ◽  
Widhi Himawan ◽  
Cynthia Permata Sari ◽  
Totok Gunawan ◽  
Sigit Heru Murti
Keyword(s):  
Energy Consumption ◽  
Greenhouse Gas ◽  
Urban Areas ◽  
Energy Use ◽  
Carbon Sink ◽  
Ghg Emissions ◽  
Electricity Consumption ◽  
Vegetation Density ◽  
Rate Of Increase ◽  
The City

Considered as a trigger of climate change, greenhouse gas (GHG) is a global environmental issue. The City of Surakarta in Indonesia consists mainly of urban areas with high intensities of anthropogenic fossil energy consumption and, potentially, GHG emission. It is topographically a basin area and most likely prompts a Thermal Inversion, creating a risk of accumulation and entrapment of air pollutants or GHGs at low altitudes. Vegetation has been reported to mitigate the rate of increase in emissions because it acts as a natural carbon sink. This study aimed to mitigate the GHG emissions from energy consumption in Surakarta and formulate recommendations for control. It commenced with calculating the emission factors based on the IPCC formula and determining the key categories using the Level Assessment approach. It also involved computing the vegetation density according to the NDVI values of the interpretation of Sentinel 2A imagery. The estimation results showed that in 2018, the emission loads from the energy consumption in Surakarta reached 1,217,385.05 (tons of CO2e). The key categories of these emissions were electricity consumption, transportation on highways, and the domestic sector, with transportation on highways being the top priority. These loads have exceeded the local carrying capacity because they create an imbalance between emission and natural GHG sequestration by vegetations.

scholarly journals The void and the memory. Ludovico Quaroni’s competition project for the Tobacco Manufacturing and the Navile Park in Bologna (1984). An urban figurative regeneration

2017 ◽  
Vol 2 (1) ◽  
pp. 81
Author(s):  
Matteo Sintini
Keyword(s):  
World War Ii ◽  
20Th Century ◽  
Urban Areas ◽  
Point Of View ◽  
Urban Context ◽  
Italian Experience ◽  
Historical Memories ◽  
In The Beginning ◽  
The City ◽  
New System

<p>The Ludovico Quaroni's competition winner project for the urban park of the Tobacco Manufacturing and the Navile dockyard, although unrealised, still represents a sort of conclusive point of the search path (he died in 1987) of one of the most prominent characters of the Italian architectural scene – and not only - of the 20th century. Furthermore, the high number of contenders to the competition’s first stage (139) made the contest itself an extraordinary occasion of rethinking an important part of the city of Bologna, a somewhat hybrid part located on the verge of town historic centre and its first expansion and offered the chance of challenge for the mostly Italian architects. The Quaroni’s group was composed by many others architects including important authors of the reconstruction projects of Bologna in the years following World War II; their proposal aimed at bringing order in a non-connected urban context filled with many fragments of historical memories of the site. The process of spaces redefinition, as in the beginning projects of the architect’s career, is conducted with the tools of the “design” (as used by Manfredo Tafuri, 1964), as an instrument of territorial and urban areas re-composition, undertook through the conservation of trails, overlapped by a new system of episodes, keeping the idea of fragments, responding to the competition requirements. In fact, the project balances the new parts in strict relation with the pre-existing elements of the historic town centre, considering the tangible and material dimensions of the city. Such a new system is governed by a clear scheme of structured elements based on the project of void, provided with a clear formal image, whose final outcome is a figurative regeneration. In this idea and formal organism Quaroni developing many of his design principles, gives a personal interpretation to the contemporary issue of regeneration empowered by those reflections that had just entered in the much wider debate in the mid-eighties, about conservation and sustainability of historic centres and the natural environment. Notably, this issue is dealt with in a cultural environment such as the one of Bologna, a city that gave much to the debate on conservation of old towns (see the Cervellati plan); a discussion founding the Italian experience of the 20th century and particularly of its second half. From this point of view, the contribution of architects from Bologna at Quaroni’s project has therefore probably accounted for the special sensibility shown by the project on those matters. After giving up on Quaroni’s plan Aldo Rossi was chosen by the Municipality to develop the project; his ideas confirm, although with different outcomes, an approach based on the value of the conservation of memory and the use of clear forms as means of urban regeneration.</p>

Smart Cities and Digital Governance

2020 ◽  
pp. 87-106
Author(s):  
Mamoona Humayun ◽  
N. Z. Jhanjhi ◽  
Malak Z. Alamri ◽  
Azeem Khan
Keyword(s):  
Smart City ◽  
Urban Areas ◽  
Good Governance ◽  
Smart Cities ◽  
Low Cost ◽  
Developed Countries ◽  
Digital Governance ◽  
Smart Governance ◽  
Intelligent Security ◽  
The City

With the ubiquitous low-cost sensor devices and widespread use of IoT, the paradigm is shifted from urban areas towards a smart city. A smart city is an urban area that uses IoT technologies to collect data and manage resources efficiently. The vision is to improve the capabilities and to solve the citizens' problems (e.g., energy consumption, transportation, recycling, intelligent security, etc.) in an efficient way. A smart city is a multidimensional term including a smart economy, smart mobility, smart living, smart environment, smart people, and smart governance. Although the concept of a smart city is increasing and currently there exist many such cities in many developed countries, one of the key challenges faced by these cities is good governance. Smart cities need smart governance to run the city in a smarter way, and effective digital governance is a solution to this end. Digital governance refers to the use of digital technology in government practices.

scholarly journals Housing Demand in Urban Areas and Sanitary Requirements of Dwellings in Italy

2020 ◽  
Vol 2020 ◽  
pp. 1-6 ◽  
Author(s):  
Marco Dettori ◽  
Lucia Altea ◽  
Donatella Fracasso ◽  
Federica Trogu ◽  
Antonio Azara ◽  
...  
Keyword(s):  
Public Health ◽  
Social Relations ◽  
Urban Areas ◽  
Housing Demand ◽  
City Centre ◽  
Italian Population ◽  
Housing Conditions ◽  
Foreign Born ◽  
Urban Context ◽  
The City

The phenomenon of urbanisation is becoming increasingly prevalent on a global level, and the health issues regarding the urban environment are of primary importance in public health. Accordingly, the present manuscript describes an analysis of the housing conditions of Italian urban areas, referring to the city of Sassari (Sardinia), Italy, focused on the dwelling structural and sanitary conditions issued by the Italian regulations. Data relating to the housing conditions of the population were acquired by the Local Hygiene and Public Health Service (SISP), in a period between 2012 and 2016. Qualitative variables were summarised with absolute and relative (percentages) frequencies, whereas quantitative variables with means and standard deviations depending on their parametric distribution. Statistical comparisons for qualitative and quantitative variables were performed with the χ2 test or Student’s t-test, respectively. A p value less than 0.05 was considered statistically significant. Finally, the dwellings and the collected variables were georeferenced on a city map. During the 2012–2016 observation period, 363 certification requests were received from 193 (53.2%) foreign-born citizens and 170 (46.8%) Italians at the SISP offices. The main reasons relate to the request for a residency permit (46.6%) and to obtain a subsidy from the local government (32.8%). Overall, 15.4% of dwellings were found to be improper, while 35.3% and 22.0% were found to be unhygienic and uninhabitable, respectively. The foreigners’ homes were found to be suitable in 82.7% of cases; the housing of Italian citizens, on the contrary, was found to be suitable in 28% of the observations. The present study offers a cross section of the housing conditions of Italian urban areas, referring to the city of Sassari. To the authors’ best knowledge, this observation is the first one carried out in Sardinia and one of the first observations in Italy. It has emerged that “hygienically unsuitable” homes are those that, in most cases, are located in the city centre. Moreover, the Italian population is hit by a significant housing problem, due to overcrowding, uninhabitability, and unhygienic conditions. Overall, our findings suggest that it is necessary to develop a multidisciplinary approach to guarantee public health, with safe dwellings homes and the surrounding urban context alongside the development of social relations. Nevertheless, there is still little evidence available today on the population housing conditions, especially regarding the private indoor environment, and further research is needed to bridge this knowledge gap.

scholarly journals State of Art Survey for IoT Effects on Smart City Technology: Challenges, Opportunities, and Solutions

2021 ◽  
pp. 32-48
Author(s):  
Rondik J. Hassan ◽  
Subhi R. M. Zeebaree ◽  
Siddeeq Y. Ameen ◽  
Shakir Fattah Kak ◽  
Mohammed A. M. Sadeeq ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Smart City ◽  
Smart Grids ◽  
Human Population ◽  
Mobile Apps ◽  
Ease Of Use ◽  
The Internet ◽  
The City ◽  
The Internet Of Things ◽  
State Of Art

Automation frees workers from excessive human involvement to promote ease of use while still reducing their input of labor. There are about 2 billion people on Earth who live in cities, which means about half of the human population lives in an urban environment. This number is rising which places great problems for a greater number of people, increased traffic, increased noise, increased energy consumption, increased water use, and land pollution, and waste. Thus, the issue of security, coupled with sustainability, is expected to be addressed in cities that use their brain. One of the most often used methodologies for creating a smart city is the Internet of Things (IoT). IoT connectivity is understood to be the very heart of the city of what makes a smart city. such as sensor networks, wearables, mobile apps, and smart grids that have been developed to harness the city's most innovative connectivity technology to provide services and better control its citizens The focus of this research is to clarify and showcase ways in which IoT technology can be used in infrastructure projects for enhancing both productivity and responsiveness.

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