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1.
Sci Total Environ ; 857(Pt 1): 159426, 2023 Jan 20.
Artigo em Inglês | MEDLINE | ID: mdl-36244483

RESUMO

Green innovation (GI) is an important way to build an ecological civilization and an innovative country. The study on urban green innovation (UGI) is of great significance for enriching the research on GI and rationally formulating high-quality urban development policies. The green patent data obtained using a web crawler was used to represent the level of UGI. The spatiotemporal evolution and influencing factors of UGI in China were analyzed by standard deviation ellipses, spatial autocorrelation, and Geodetector. The research shows that: From 2005 to 2020, the level of UGI in China tended to rise rapidly. The center of gravity of UGI in China was located in the southeast of China's geometric center and tended to move to the south and west. The standard deviation ellipse was distributed in a "northeast-southwest" pattern, the area was gradually shrinking, and the length of the two semi-axes was shortening. UGI in China showed obvious global and local spatial autocorrelations. The degree of global spatial autocorrelation was gradually increasing. Among the types of local spatial autocorrelation, the largest number of low-low agglomeration cities was mainly located in the northwest and southwest part of China, while high-high agglomeration cities were distributed in Beijing-Tianjin-Hebei, Yangtze River Delta, and Pearl River Delta. The government intervention expressed by the proportion of scientific and technological expenditure in fiscal expenditure and environmental regulation is the dominant factor affecting UGI.


Assuntos
Rios , Reforma Urbana , Cidades , China , Pequim , Desenvolvimento Econômico
2.
Artigo em Inglês | MEDLINE | ID: mdl-36429461

RESUMO

The rational spatial allocation of Green Stormwater Infrastructure (GSI), which is an alternative land development approach for managing stormwater close to the source, exerts a crucial effect on coordinating urban development and hydrological sustainability. The balance between the supply and demand of urban facilities has been an influential standard for determining the rationality of this allocation. However, at this stage, research on evaluating planning from the perspective of supply-demand in GSI is still limited. This study proposed an evaluation method for assessing supply-demand levels in GSIs in Guangzhou, China, using the coupling coordination model consisting of Coupling Degree (CD) and Coupling Coordination Degree (CCD). Furthermore, the spatial distributions of supply-demand balance and resource mismatch were identified. The results indicated that the supply and demand levels of GSI exhibited significant spatial differences in distribution, with most streets being in short supply. The GSI exhibited a high CD value of 0.575 and a poor CCD value of 0.328, implying a significant imbalance in facility allocation. A lot of newly planned facilities failed to effectively cover the streets in need of improvement, so it became essential to adjust the planning scheme. The findings of this study can facilitate the decision-makers in assessing the supply-demand levels in GSI and provide a reference of facility allocation for the sustainable construction of Sponge City.


Assuntos
Reforma Urbana , China , Cidades
3.
Artigo em Inglês | MEDLINE | ID: mdl-36429830

RESUMO

Residential properties are a major component of the environment and economy and a key element for the quality of human life. Faced with disruptive ideological and technological changes in the world, real estate analysis has also become a key research problem for many academic centers and private institutions. Due to the complex nature of properties, they are one of the most difficult and troublesome subjects of analysis. Given the rapid advancements in competitive automated analytical models, the problem of data representative sample selection may prove to be a very wide-reaching subject. The aim of this paper was the assessment of the particular soft computing methods' (e.g., Self-Organizing Maps, Rough Set Theory) usefulness for selecting a representative property model. The obtained results confirm that the use of these methods leads to the creation of a model that enables a more reality-based view of the uncertainty and imprecise residential environment.


Assuntos
Algoritmos , Humanos , Reforma Urbana
4.
PLoS One ; 17(11): e0277324, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36395184

RESUMO

Brownfields are an important part of urban land resources. Strengthening the governance and redevelopment of brownfields is significant to environmental protection, high-quality urban development and sustainable development. However, due to the complexity and harmfulness of brownfield pollution, the hasty, untimely, and blind development can cause serious consequences. It is infeasible to pay more attention to development than governance or vice versa. In this paper, aiming at brownfield redevelopment evaluation, we introduced the Wuli-Shili-Renli (WSR) system methodology, an oriental system thought combining qualitative and quantitative analyses, comprehensively analyzed the influencing factors of brownfields from three dimensions of Wuli, Shili and Renli, and constructed the evaluation index system of brownfield redevelopment. To avoid much subjectivity in the evaluation process, we established the evaluation model of brownfield redevelopment using the catastrophe progression method. Taking the renovation project of Shanghai Xintiandi in 1999-2001 as a reference, the evaluation index system and evaluation model were applied to the renovation project of Wenjia Street in Qingyang District, Chengdu, Sichuan Province, China in 2022, and the results provided a good basis for the decision-making process.


Assuntos
Poluição Ambiental , Teoria de Sistemas , China , Conservação dos Recursos Naturais , Reforma Urbana
5.
Sci Prog ; 105(4): 368504221140273, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36444484

RESUMO

Due to the lack of trust in the builder and indeterminate benefits, it is a struggle for people in Taiwan to make up their minds to participate in urban renewal. This leads to the completion rate of urban renewal of fewer than one ten-thousandth of the new construction needed. This study investigated the perspective on the research variables for people in Taiwan and how those influence their intention to participate in urban renewal. Using the Theory of Planned Behavior, the research framework is designed with the trust of urban renewal project builders and the perceived benefits of public participation as the independent variables. Attitudes, subjective norms, and perceived behavioral control are the mediating variables, and the general public's intention to participate in urban renewal is the dependent variable. A total of 545 valid questionnaires were collected through the survey. The results showed that the respondents' trust in the builder of the urban renewal project positively and significantly influenced their perceived benefits of the project, and the respondents' trust in the builder significantly influenced their subjective norms. The perceived benefits positively and significantly affected their attitudes and subjective norms, and people's attitudes, subjective norms, and perceived behavioral control positively and significantly affected their intention to participate in urban renewal. People's perceived benefits in urban renewal projects affected their participation intention through attitudes and subjective norms. The variable perceived benefits most strongly influenced people's intention to participate in urban renewal in this study. This study provides practical suggestions for the government and builders to increase people's intention to participate in urban renewal. This study modeled two independent variables, trust in the builder and perceived benefits, under the urban renewal context in Taiwan. In future works, other factors could be included, such as tax incentives, floor area rewards, and fair appraisal.


Assuntos
Intenção , Reforma Urbana , Humanos , Controle Comportamental , Confiança , Sugestão
6.
Artigo em Inglês | MEDLINE | ID: mdl-36430095

RESUMO

The coordinated promotion of urban digitalization and green development is an inevitable requirement for sustainable development in the digital age. Based on the coupling mechanism of urban digitalization and green development, in this study, we took 282 cities at the prefecture level and above in China from 2011 to 2019 as the research object, and we constructed the evaluation index system and calculated the coupling coordination degree (CD&GDD) of the two through the coupling coordination degree model. We further used the Dagum Gini coefficient, kernel density estimation, Markov chain and Moran's I to assess the spatial effects of the regional differences, dynamic evolution trends and degree of coupling coordination. The results show the following: (1) The level of urban digitalization and green development show a fluctuating upward trend, and the interaction between the two is obvious. (2) Although the CD&GDD of most cities is continuously improving, it is still at a low level. There are large differences in the levels between the regions. (3) The inter-regional differences are the main source of the large overall differences in the CD&GDD in China, and these are mainly composed of the hypervariable density and net differences between the regions. (4) The phenomenon of "club convergence" exists in the CD&GDD. (5) The coupling coordination relationship between cities has a substantial spatial effect, and the spatial effect has obvious regional heterogeneity. The results and conclusions provide a reference for developing countries to promote green and low-carbon urban development.


Assuntos
Desenvolvimento Sustentável , Reforma Urbana , Cidades , China , Análise Espacial
7.
Artigo em Inglês | MEDLINE | ID: mdl-36429480

RESUMO

Smart cities are the future development direction of cities and are a comprehensive expression of the development of the organic life body of cities. The organic life form of a smart city relates to viewing the city as an organic life self-organizing system based on the wholeness and systemic nature of the smart city life form itself, to construct a holistic spatial linkage of the functions and mechanisms of the city life system, and to enhance the overall vitality of the space. This study is based on the literature of "smart city" research in the China National Knowledge Infrastructure (CNKI) database, and the current situation and related themes of smart city research in China are discussed through co-word analysis and cluster analysis using software such as SPSS and VOSviewer, among which there are four themes in co-word cluster analysis, namely, intelligent technology supporting smart city research; research on the integration of the social system of a smart city; research on the top-level strategic design and planning and construction of a smart city; and research on the development, evaluation, and concrete practice of smart city construction. Four conclusions are drawn from the development of smart city research in China: Firstly, smart city research has attracted the attention of multiple disciplines, and the research themes are scattered and integrated across disciplinary systems. Secondly, smart city construction, development rules, and characteristics need to be further explored, and the problems, future trends, and policy support for the modernization of China's cities and towns have been focused on engineering and technology, with a lack of practical research in non-technical areas such as humanities and ethics. Thirdly, the philosophical humanism and ecological ethics of smart cities need to be systematized, and their construction and development needs to be humanistic, systematic, and comprehensive, thus contributing to the sustainability, livability, ecology, and wisdom of future urban development. Fourthly, the development of the smart city system is supported by theories related to global cities and innovative cities, and the world city, a product of globalization, is undergoing a transformation into a digital and intelligent organic urban life form.


Assuntos
Mudança Social , Reforma Urbana , Cidades , China , Bibliometria
8.
Artigo em Inglês | MEDLINE | ID: mdl-36429627

RESUMO

The process of urban development in China is that cities retain independent administrative divisions, realize inter-regional urban integration, and then establish metropolitan areas; this process has high requirements for the coordinated development of cities. China's cities still need to receive approximately 300 million people in the future, and these urban populations are mainly planned in the emerging metropolitan area. In order to clarify the problems and development of the direction of China's emerging megalopolis in the process of building a framework for carrying urban population, and to provide reference for China's urbanization process, the entropy weight method-coupling coordination degree model-panel vector autoregression model (EWM-CCDM-PVAR) is constructed to measure the development level, coupling coordination degree and dynamic response relationship of NTU-UI-UE in the Jiaodong Economic Circle. First, the development level of new-type urbanization and urban infrastructure in the Jiaodong Economic Circle has been steadily improved, but regional differences have been expanding year by year. The urban environment of most cities in the Jiaodong Economic Circle is deteriorating. Second, the CCD level of NTU-UI-UE in the Jiaodong Economic Circle is on the rise, but the CCD level of NTU-UI-UE in Weifang and Yantai is only a Moderate-coupling coordination type, and the development within the region is uneven. Third, both NTU-UI and UI-UE in the Jiaodong Economic Circle have established a dynamic response relationship of mutual promotion, but NTU-UE has a dynamic response relationship of mutual inhibition. Fourth, despite different problems, the Jiaodong Economic Circle has made certain achievements in the process of regional integration and has initially formed a metropolitan circle pattern with Qingdao as its core, Weifang as its west center, Yantai and Weihai as its north center and Rizhao as its south center.


Assuntos
Reforma Urbana , Urbanização , Humanos , Cidades , População Urbana , China
9.
Malar J ; 21(1): 328, 2022 Nov 14.
Artigo em Inglês | MEDLINE | ID: mdl-36376966

RESUMO

BACKGROUND: In 2017, several new housing districts were constructed on Bioko Island, Equatorial Guinea. This case study assessed the impact construction projects had on mosquito larval habitats and the effectiveness of larval source management in reducing malaria vector density within the surrounding area. METHODS: Anopheline larval presence was assessed at 11 new construction sites by the proportion of larval habitats containing Anopheline pupae and late instar larval stages. Bacillus thuringiensis israelensis (Bti) larvicide was applied weekly to nine locations for 30 weeks, while two locations received no larvicide and acted as controls. Adult mosquito density was monitored via human landing collections in adjacent communities of six construction sites, including the two control sites. RESULTS: The sites that received Bti had significantly lower observation rates of both pupae (3.2% vs. 18.0%; p < 0.001) and late instar Anopheles spp. mosquitoes (14.1 vs. 43.6%; p < 0.001) compared to the two untreated sites. Anopheles spp. accounted for 67% of mosquitoes collected with human landing collections and were captured at significantly lower levels in communities adjacent to treated construction sites compared to untreated sites (p < 0.001), with an estimated 38% reduction in human biting rate (IRR: 0.62, 95% CI IRR: 0.55, 0.69). Seven months after the start of the study, untreated sites were treated due to ethical concerns given results from treatment sties, necessitating immediate Bti application. The following week, the number of habitats, the proportion of larval sites with Anopheles spp. pupae, late instars, and adult biting rates in adjacent communities to these sites all decreased to comparable levels across all sites. CONCLUSION: Findings suggest larval source management represents an effective intervention to suppress mosquito populations during infrastructure development. Incorporating larval source management into ongoing and planned construction initiatives represents an opportunity to fine tune vector control in response to anthropogenetic changes. Ideally, this should become standard practice in malaria-endemic regions in order to reduce viable mosquito habitats that are common by-products of construction.


Assuntos
Anopheles , Bacillus thuringiensis , Malária , Animais , Humanos , Anopheles/fisiologia , Malária/epidemiologia , Controle de Mosquitos/métodos , Larva , Reforma Urbana , Mosquitos Vetores , Pupa , Ecossistema
10.
Artigo em Inglês | MEDLINE | ID: mdl-36231884

RESUMO

Urban development in developing regions increases ecological and environmental pressures. Few annual ecological studies have been conducted on tourist-oriented cities. Guilin is famous as an international tourist destination in Chine. Analyzing its coupling coordination between urbanization and ecology is vital for subsequent sustainable development. This paper constructed a night-time light index (NTLI) based on DMSP/OLS, NPP/VIIRS night-time light data in response to these problems. The remote sensing ecological index (RSEI) model was established in this study by using four indexes: greenness, wetness, dryness and heat. The coupling coordination degree model (CCDM) was built. From the dynamic time-series changes of CCDM, the urban development and ecological environment of the urban area of Guilin, from 2000 to 2020, were analyzed. The results showed that the urban area of Guilin's urbanization had developed rapidly over the past 20 years. NTLI in 2020 was 7.72 times higher than in 2000. The overall ecological quality of the main urban area of Guilin has improved significantly, while local ecological pressure in Lingui District has increased. CCDM has shifted from low to high coupling coordination, and the relationship between urban development and the ecological environment has improved. The method of annual spatial-temporal analysis of urban ecology in this paper can be applied in similar studies on other cities, and the results obtained for Guilin have reference value for future urban planning and environmental protection work.


Assuntos
Ecossistema , Reforma Urbana , China , Cidades , Conservação dos Recursos Naturais , Tecnologia de Sensoriamento Remoto , Urbanização
11.
Environ Sci Technol ; 56(22): 16369-16381, 2022 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-36256736

RESUMO

The urban built environment stocks such as buildings and infrastructure provide essential services to urban residents, and their spatiotemporal dynamics are key to the circular and low-carbon transition of cities. However, spatiotemporally explicit characterization of urban built environment stocks remains hitherto limited, and previous studies on fine-grained mapping of built environment stocks often focus on an urban area without consideration of temporal dynamics. Here, we combined the emerging geospatial data and historical maps to quantify the spatially and temporally refined stocks of buildings and infrastructure and developed a novel indexing method to track the construction, demolition, and renovation for each building across various historical snapshots, with a case study of Odense, Denmark, from 1810 to 2018. We show that built environment stock in Odense increased from 80 t/cap in 1810 to 279 t/cap in 2018. Their dynamics appear overall in line with urban development of Odense over the past two centuries and well reflect the combined effects of industrialization, infrastructure development, socioeconomic characteristics, and policy interventions. Such spatiotemporally explicit stock mapping offers a physical and resource perspective for measuring urbanization and provides the public and government insight into urban spatial planning and related resource, waste, and climate strategies.


Assuntos
Reforma Urbana , Urbanização , Cidades , Ambiente Construído , Dinamarca , Planejamento de Cidades
12.
Artigo em Inglês | MEDLINE | ID: mdl-36231864

RESUMO

Understanding the development process of urban green space and biodiversity conservation strategies in urban green space is vital for sustainable urban development. However, a systematic review of the urban green space biodiversity research is still lacking. We have retrieved 3806 articles in WOS core journals and carried out the bibliometrics analysis through the three related search terms: urban, green space, and biodiversity. We found that: (1) the year 2009 was a changing point, and the number of articles have increased exponentially since 2009. The United States, China, Europe, and Australia are closely linked, and four research centers have formed; (2) all studies can be classified into three research themes: "Pattern of Urban Green Biodiversity", "Ecological Function of Urban Green Biodiversity", and "Sustainability of Urban Green Biodiversity"; (3) based on the evolution of keywords, this field is divided into the budding stage (1998-2012) and the development stage (2012-2021). The keywords in the budding stage focus on the diversity of different species, and the keywords in the development stage focus on the ecosystem services, biodiversity protection, and residents' satisfaction; (4) the future research focus may be in three aspects: studies on green space in the less urbanized area and urban-rural ecotone, the regulation mechanism and cultural services of urban green space, and the rational layout and management of urban green space. This study hopes to provide a reference for future research on urban green space biodiversity and promote the sustainable development of urban green space.


Assuntos
Ecossistema , Parques Recreativos , Bibliometria , Biodiversidade , Cidades , Conservação dos Recursos Naturais , Reforma Urbana
13.
Artigo em Inglês | MEDLINE | ID: mdl-36232134

RESUMO

Previously, urban planning approaches have tended to convert local agglomeration into network connections to advance urban development. However, is this successful experience learned from developed counties appropriate for developing countries? Scholars hold different opinions on this debate. To answer this question, we need to examine the effects of urban agglomeration in developing countries with a quantitative method. In this paper, we introduced a method of examining network connections from a geospatial perspective to explore the practice and spatial consequences of regional integration using a new concept of "coupling distance" based on metal valence bond theory. Then we applied this method to conduct an empirical case study of the urban agglomeration in the middle reaches of the Yangtze River region in China. We found that: (1) the real integration scale of the investigated urban areas was less than one-fourth the planned area, as most of interactions between cities are local, although we see the positive facilitation of urban networks on cross-provincial integration. (2) In terms of spatial consequences, the study area demonstrated phenomena of "agglomeration shadows", "enclaves" and "inverse integration". Specifically, these "agglomeration shadows" were all in their province's geometric centers, which seemed to have suffered a "central position curse". (3) Both "enclaves" and "inverse integration" call for a readjustment of government-led regional integration planning. Differently, the former has a positive attitude towards integration while the latter holds the opposite attitude. This study hopes to provide operationalizing methods and guidelines for planners and decision makers in the field of regional integration planning.


Assuntos
Rios , Reforma Urbana , China , Cidades , Urbanização
14.
Artigo em Inglês | MEDLINE | ID: mdl-36232137

RESUMO

Environmental regulation (ER) plays an important role in urban low-carbon development (ULCD). First of all, we evaluate the ULCD level of 282 cities in China from 2005 to 2020 by constructing an index group and entropy method. Two panel models are then used to test the spillover effects and threshold effects of ER and industrial structure on ULCD. The results show that the ULCD level of most cities is still in grade III (0.27-0.38) or IV (0.38-0.49), and the level of central-western cities is generally lower than that of eastern cities. Furthermore, the spillover effect of ER and industrial structure upgrading (UIS) on ULCD is positive in eastern cities (0.038) but opposite in central or western cities (-0.024). Further results show that the positive effects of optimization of industrial structure (OIS) and UIS are gradually increasing with the improvement of ER. However, the positive effects are more beneficial to the eastern cities. Therefore, the conclusions of this study can provide a decision-making reference for local government to comprehensively formulate environmental and industrial policies to enhance the low-carbon development of cities.


Assuntos
Carbono , Indústrias , China , Cidades , Desenvolvimento Econômico , Reforma Urbana
15.
Artigo em Inglês | MEDLINE | ID: mdl-36231499

RESUMO

With the rapid expansion of urban built-up areas in recent years, accurate and long time series monitoring of urban built-up areas is of great significance for healthy urban development and efficient governance. As the basic carrier of urban activities, the accurate monitoring of urban built-up areas can also assist in the formulation of urban planning. Previous studies on urban built-up areas mainly focus on the analysis of a single time section, which makes the extraction results exist with a certain degree of contingency. In this study, a U-net is used to extract and monitor urban built-up areas in the Kunming and Yuxi area from 2012 to 2021 based on nighttime light data and POI_NTL (Point of Interest_Nighttime light) data. The results show that the highest accuracy of single nighttime light (NTL) data extraction was 89.31%, and that of POI_NTL data extraction was 95.31%, which indicates that data fusion effectively improves the accuracy of built-up area extraction. Additionally, the comparative analysis of the results of built-up areas and the actual development of the city shows that NTL data is more susceptible to urban emergencies in the extraction of urban built-up areas, and POI (Point of interest) data is subject to the level of technology and service available in the region, while the combination of the two can avoid the occasional impact of single data as much as possible. This study deeply analyzes the results of extracting urban built-up areas from different data in different periods and obtains the feasible method for the long time sequence monitoring of urban built-up areas, which has important theoretical and practical significance for the formulation of long-term urban planning and the current high-quality urban development.


Assuntos
Monitoramento Ambiental , Reforma Urbana , Cidades , Planejamento de Cidades , Monitoramento Ambiental/métodos
16.
Health Res Policy Syst ; 20(1): 115, 2022 Oct 28.
Artigo em Inglês | MEDLINE | ID: mdl-36307811

RESUMO

BACKGROUND: As more people now live in urban areas than in rural communities in Nigeria, urban development (UD) requires urgent policy and programmatic attention. Although the population factor has been identified as important to achieving national development goals, and evidence suggests that meeting the family planning (FP) and reproductive health (RH) needs of the vulnerable urban population can serve as an important recipe for achieving population growth rates consistent with building sustainable, habitable and prosperous urban settings, FP remains a neglected subject in UD initiatives in Nigeria. This study explored barriers and facilitators in achieving integrated policy formulation and implementation of FP and UD programmes in Nigeria. METHODS: We conducted key informant interviews (n = 37) with relevant FP/RH and UD stakeholders in Ibadan and Kaduna-two megacities that have undergone several UD and FP intervention programmes in the south and north of Nigeria. The sample size was determined by data saturation. Data were organized using ATLAS.ti and NVivo 12 software, and analysis was conducted using a thematic approach. RESULTS: We found that relevant government agencies largely work in silos. Other identified barriers to integrated policy formulation/implementation of FP and UD programmes in Nigeria include lack of knowledge about the FP-UD nexus between professionals, ineffective implementation and monitoring of existing guidelines, lack of policy documentation that clearly links FP and UD, and frequent transfer of government stakeholders. Notwithstanding the identified barriers, the study established ways of achieving synergy between FP and UD sectors, including stakeholder engagement, intersectoral collaborations, sensitization and publicity, roundtable discussion, interdisciplinary research, conferences and other interactive and knowledge-sharing fora. CONCLUSIONS: We conclude that addressing barriers to the intersectoral linkage between FP and UD is fundamental to achieving sustainable urbanization in Nigeria.


Assuntos
Serviços de Planejamento Familiar , Reforma Urbana , Humanos , Nigéria , Formulação de Políticas , Política Pública
17.
Comput Intell Neurosci ; 2022: 4056713, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36093504

RESUMO

Cities are gradually developed on the basis of adapting and transforming the natural environment. In a certain urban area, human activities, natural environment, and other factors and their mutual influence constitute the urban ecological environment. Therefore, the evaluation of urban ecological environment quality is of great significance to the analysis of urban development. This paper takes a city in Western China as the evaluation object, uses AHP to determine the index weight, reasonably analyzes the current situation of the urban ecological environment, and further comprehensively evaluates the quality of the urban ecological environment. The study shows that from 2013 to 2018, the comprehensive capacity of the city's ecological environment quality showed a steady upward trend, except that the natural disasters of floods and mudslides in 2014 had a certain degree of fluctuation. The comprehensive index of ecological environment quality has increased from 0.337 in 2013 to 0.412 in 2018. The overall level is still low, but the development speed is relatively stable. The urban ecological environment has been gradually improved, and society, economy, and nature have maintained a certain degree of sustainable development.


Assuntos
Conservação dos Recursos Naturais , Reforma Urbana , China , Cidades , Humanos , Desenvolvimento Sustentável
18.
Stud Health Technol Inform ; 297: 263-270, 2022 Sep 02.
Artigo em Inglês | MEDLINE | ID: mdl-36073403

RESUMO

This article presents the first main outcomes of the innovative experience of the Municipal Accessibility Lab of Lecce, a technical-administrative structure established for guiding the implementation of the Accessibility Plan of the city. In order to make Lecce an accessible, comfortable and safe city, the research activities of the Accessibility Lab focus on interdisciplinarity and citizen participation, thus becomes an opportunity for a generalized improvement of life in the city, an experience of knowledge and socialization to help create a more aware and fair community.


Assuntos
Reforma Urbana , Cidades
19.
Chaos ; 32(8): 081105, 2022 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-36049958

RESUMO

Cities are typical dynamic complex systems that connect people and facilitate interactions. Revealing general collective patterns behind spatiotemporal interactions between residents is crucial for various urban studies, of which we are still lacking a comprehensive understanding. Massive cellphone data enable us to construct interaction networks based on spatiotemporal co-occurrence of individuals. The rank-size distributions of dynamic population of locations in all unit time windows are stable, although people are almost constantly moving in cities and hot-spots that attract people are changing over time in a day. A larger city is of a stronger heterogeneity as indicated by a larger scaling exponent. After aggregating spatiotemporal interaction networks over consecutive time windows, we reveal a switching behavior of cities between two states. During the "active" state, the whole city is concentrated in fewer larger communities, while in the "inactive" state, people are scattered in smaller communities. Above discoveries are universal over three cities across continents. In addition, a city stays in an active state for a longer time when its population grows larger. Spatiotemporal interaction segregation can be well approximated by residential patterns only in smaller cities. In addition, we propose a temporal-population-weighted-opportunity model by integrating a time-dependent departure probability to make dynamic predictions on human mobility, which can reasonably well explain the observed patterns of spatiotemporal interactions in cities.


Assuntos
Reforma Urbana , Cidades , Conservação dos Recursos Naturais , Humanos
20.
J Environ Manage ; 324: 116324, 2022 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-36179478

RESUMO

To achieve sustainable development, local governments are under enormous pressure to simultaneously achieve the three assessment tasks (TATs) of energy saving, CO2 reduction, and pollution reduction. However, the TATs are often managed by different authorities and have three types of measures (TTMs) that correspond to them. The lack of adequate cooperation between these authorities has led to the inefficient investment of policy resources and even to policy conflicts, and the interactions among the TTMs are not yet known. To this end, this paper uses the MCEE model to assess the interactions among the TTMs quantitatively using Guangzhou, China, as a case study. The results showed the following. (1) According to the current development trend, if the authorities managing the TATs continue to work alone, they will not be able to fulfill the corresponding assessment tasks in the future. (2) The TTMs have interactions with each other, and their synergies are far greater than their trade-offs. From 2015 to 2035, it is expected that energy-saving measures can accomplish 54.39% of the CO2 reduction tasks and 32.74% of the pollution reduction tasks indirectly, and low-carbon measures can accomplish 55.53% of the energy saving tasks and 27.20% of the pollution reduction tasks indirectly, However, environmental-protection measures will cause fewer trade-offs (energy demand and CO2 emissions increase by 3.76% and 2.88%, respectively). (3) In some years, the contribution of interactions among the TTMs are even higher than their direct contribution to the TATs. Our findings suggest that intensive cooperation between authorities is necessary, and that the benefits of such cooperation will outweigh the disadvantages.


Assuntos
Ecossistema , Desenvolvimento Sustentável , Reforma Urbana , Dióxido de Carbono , China
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