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Concentrations of Potentially Toxic Elements in Groundwater and Surface Water in Ruashi and Annexe Municipalities of Lubumbashi City, Southeastern Democratic Republic of Congo 被引量:1
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作者 Bamba Bukengu Muhaya Benjamin Busomoke Badarhi 《Journal of Environmental Science and Engineering(A)》 CAS 2025年第1期1-13,共13页
Groundwater and surface water contamination by PTE(Potentially Toxic Elements)was assessed in Ruashi and Annexe municipalities of Lubumbashi city.Analyses of seventy water samples collected from six drilled wells,eigh... Groundwater and surface water contamination by PTE(Potentially Toxic Elements)was assessed in Ruashi and Annexe municipalities of Lubumbashi city.Analyses of seventy water samples collected from six drilled wells,eight spade-sunk wells,one river and one spring in both municipalities in 2017 and 2018 were carried out by ICP-SF-MS(Inductively Coupled Plasma-Sector Field Mass Spectrometry).Twenty PTEs including aluminum,arsenic,barium,bismuth,cadmium,cesium,chromium,cobalt,copper,iron,lead,manganese,molybdenum,nickel,strontium,thallium,tungsten,uranium,vanadium and zinc were detected at various concentrations in each one of the samples.Many samples had concentrations and mean concentrations of PTEs,such as aluminum,cadmium,copper,iron,lead,manganese,nickel and zinc,higher than the respective acceptable limits set for drinking water by the EU(European Union),the USEPA(United States Environmental Protection Agency),and the WHO(World Health Organization)standards.Most PTEs being deleterious to human health even at very low concentrations,people who use the groundwater and surface water to meet their water needs in both Ruashi and Annexe municipalities are at risk. 展开更多
关键词 CONTAMINATION GROUNDWATER PTEs spring STREAM Ruashi and Annexe municipalities Lubumbashi city.
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Low-carbon city communication:Integrated strategies for urban and rural municipalities in Thailand 被引量:1
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作者 Sukanya Sereenonchai Noppol Arunrat Thomas Neal Stewart 《Chinese Journal of Population,Resources and Environment》 2020年第1期16-25,共10页
As an important sustainable development goal,the creation of low-carbon cities(LCCs)has become crucial to creating livable cities and environmental sustainability.Thus,we aimed to understand the factors that support t... As an important sustainable development goal,the creation of low-carbon cities(LCCs)has become crucial to creating livable cities and environmental sustainability.Thus,we aimed to understand the factors that support the transition of traditional cities to LCCs,by analyzing and synthesizing how to promote practical LCC across 15 pilot municipalities in four regions of Thailand,covering four strategies:City of Trees,City of Waste Minimization,City of Energy Efficiency,and City of Sustainable Consumption.Literature research,in-depth interviews,and observations were employed for data collection,while the 5​W(who,says what,in which channel,to whom,and with what effect)and SMCR(sender,message,channel,and receiver)models were used to create a communication analysis framework.Results revealed that the effective activities of municipalities should increase tree planting and implement more serious regulations for the conservation of existing trees.Making compost and establishing waste recycling banks are recommended for rural municipalities,while optimization of garbage and wastewater management systems and facilities should be highlighted in urban municipalities.Moreover,recycling,low-carbon agriculture,second-hand shops/markets,green markets,and homegrown vegetables should be encouraged for sustainable consumption.Working with local municipalities,credible leaders and representatives were the key senders.Additionally,message design should compare the pros and cons of behaviors,connect with local health and tourism,and promote dialogue in easy-to-understand and thought-provoking language.Receivers that drive LCC should have an excellent understanding of LCC practice and its benefits,be public-minded,and have a desire to live in a good environment. 展开更多
关键词 Low-carbon city Low-carbon communication Integrated strategies Urban and rural municipalities Thailand
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Flood Risk Mapping of the Benin Municipalities at the Intersection of the Coastal Sedimentary Zone and the Crystalline Surface 被引量:1
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作者 Éric Alain Mahugnon Tchibozo Apollinaire Cyriaque Agbon +1 位作者 Azize Ognondoun Bidossessi Roméo David Houessinon 《Journal of Geographic Information System》 2024年第5期321-342,共22页
Climate change and population growth have led to the increase and/or intensification of flooding becoming a major issue. The objective of this study is to visualize flooding risk of municipalities at the intersection ... Climate change and population growth have led to the increase and/or intensification of flooding becoming a major issue. The objective of this study is to visualize flooding risk of municipalities at the intersection of the coastal sedimentary zone and the crystalline surface. The methodology adopted is based on geomatic approach, which involves documentary research, processing and assisted classification using remote sensing images and multi-criteria analysis of the Geographic Information System (GIS). Flooding risk is very high at 8.85% in Djidja, Toffo, Zè and Bonou municipalities. In other municipalities such as Agbangnizoun, Abomey, Bohicon, Za-Kpota and Cove, it is high of 46.85%. To the Southeast of the study area, it is located on the eastern and western banks of Oueme Valley. The medium risk represents 26.35% and is located in the municipalities of Ouinhi and Adjohoun. The other municipalities have a low rate of 17.95%. Risk modeling has made it possible to access the various levels of rising water that can cause flooding. Land-use planning decisions can be influenced by the results of this study. 展开更多
关键词 Geomatic Flood Risk Contact Line municipalities BENIN
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Measuring Financial Strength in the Public Sector:The Case of Greek Municipalities
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作者 Christos Pallis Konstantinos J.Liapis Panagiotis M.Spanos 《Economics World》 2018年第3期177-184,共8页
An important research field in public and private sectors,accounting is the identification of the factors of financial strength that affect the control and decision-making process.The paper examines the financial stre... An important research field in public and private sectors,accounting is the identification of the factors of financial strength that affect the control and decision-making process.The paper examines the financial strength of the municipalities in Greece and their possible bankruptcy.In literature,important examples of forecasting and estimating financial strength for public sector have been presented,such as the Brown’s 10-point test which measures the financial condition in the case of municipalities.The present survey focuses on the liquidity of the Greek municipalities using data for the financial year 2014 from all over the Greek territory.By implementing Brown’s 10-point test for Greek municipalities and using quantitative methods,each point is becoming a separate independent variable which affects,with different estimator,the total score of financial condition.The model that has been developed appears to be effective in the case of Greek municipalities by providing a rating for their financial strength.The use of the proposed methodology can be used by both funding institutions(banks,grant providers,relevant ministry)on a programmatic basis to address liquidity problems. 展开更多
关键词 municipalities FINANCIAL performance Brown’s 10-point test
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Financial Effectiveness and Areas of Improvement in Greek Municipalities
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作者 Petros Pallis Christos Pallis 《Management Studies》 2017年第3期183-193,共11页
The aim of this research is to separate the entire sample of Municipalities in Greece into categories, based on the effectiveness of financial management and financial performance into effective and ineffective ones. ... The aim of this research is to separate the entire sample of Municipalities in Greece into categories, based on the effectiveness of financial management and financial performance into effective and ineffective ones. In this study, it investigated the existence of differences between the characteristics of these two categories. The main objective is to investigate the influence of financial effectiveness regarding those areas falling under state jurisdiction with the greatest room for improvement. Specifically, in Municipalities with ineffective financial management, local employment was notably considered to be the area with the greatest margin for improvement. Additionally, 21% of mayors of Municipalities with effective fmancial management consider that the state area of responsibility with the greatest capacity for improvement is that of attracting private investment. Moreover, the influence of financial effectiveness regarding the areas of competence of Greek Municipalities with the greatest room for improvement has a similar pattern. According to responses from mayors in Municipalities with ineffective fmancial administration, the areas of competence with the greatest room for improvement are provision and maintenance of infrastructure (23% of responses) and attraction of private investment (19% of responses). Accordingly, responses from mayors in Municipalities with the highest financial performance indicate that the areas of competence with the greatest room for improvement are provision and maintenance of infrastructure (21% of responses) and attraction of private investment (20% of responses). 展开更多
关键词 Greek municipalities local development public finance financial performance financial management empirical investigation
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Financial Effectiveness of Greek Municipalities: An Empirical Investigation
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作者 Christos Pallis Petros Pallis 《Management Studies》 2016年第5期183-196,共14页
Municipalities are autonomous economic and administrative entities, with common actions and responsibilities. Moreover, all Municipalities are quite different considering specific characteristics, such as geographic, ... Municipalities are autonomous economic and administrative entities, with common actions and responsibilities. Moreover, all Municipalities are quite different considering specific characteristics, such as geographic, demographic, and economic. The aim of this research is to separate the entire sample of Municipalities in Greece into categories, based on the effectiveness of financial management and financial performance into effective and ineffective ones. For the separation of the sample into groups, cluster analysis was preferred. For this reason, three variables were used: the lending capacity of the Municipality, flexibility in making non-investment costs, and flexibility in investment spending. These three variables were considered to be the key dimensions of effectiveness in financial management and therefore their use, representatively describes the effectiveness of Greek Municipalities. Thus, this paper presents the literature review of the financial effectiveness of Municipalities and the methodology of an empirical research through structured questionnaire that was sent to the entire population of Greek Municipalities, characterized in this way with considerable heterogeneity. In this way, it investigates the views of Mayors in the two categories of Municipalities (effective and non effective financial management and financial performance) as regards: (a) the biggest problems faced by the citizens in their Municipality, and (b) the biggest personnel problems faced by their Municipality. Concluding, the prioritization of both problems seems to be the same for both groups of Municipalities. The frequency of responses differs slightly and differences are not so large that financial performance can be considered to affect respondents' opinions. 展开更多
关键词 Greek municipalities local development public finance financial performance financial management empirical investigation
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Separating Municipalities Regarding Their Financial Performance Evidence From Greece
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作者 Christos Pallis Petros Pallis 《Economics World》 2017年第2期164-173,共10页
Municipalities are autonomous economic and administrative entities, with common actions and responsibilities. Additionally, all Municipalities are quite different considering specific characteristics, such as geograph... Municipalities are autonomous economic and administrative entities, with common actions and responsibilities. Additionally, all Municipalities are quite different considering specific characteristics, such as geographic, demographic, and economic. The aim of this research is to separate the entire sample of Municipalities in Greece into categories, based on the effectiveness of financial management and financial performance into effective and ineffective ones. This investigation is substantial because it is very interesting in-depth observation of current situation of the financial management capabilities of Municipalities, and additionally because it is crucial to extract the differences in specific characteristics between economical efficient and inefficient Municipalities. For the separation of the sample into groups, cluster analysis was preferred. For this reason, three variables were used: the lending capacity of the municipality, flexibility in making non-investment costs, and flexibility in investment spending. These three variables were considered to be the key dimensions of effectiveness in financial management and therefore their use, representatively describes the effectiveness or not of Greek Municipalities. In this study, it investigated the existence of differences between the characteristics of these two categories. The features are "how Municipalities are working with specialist consultants" and "how Municipalities are using modem technologies". The main objective is to investigate the influence of these two characteristics in the efficiency of managing financial resources. 展开更多
关键词 Greek municipalities local development financial performance financial management empirical investigation
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Measuring the urban sprawl based on economic-dominated perspective:the case of 31 municipalities and provincial capitals
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作者 Qiqi Zhu Meizhi Zeng +3 位作者 Pengfei Jia Mingqiang Guo Xun Liang Qingfeng Guan 《Geo-Spatial Information Science》 CSCD 2024年第4期1272-1289,共18页
Accurate measurement of urban sprawl is vital for urban planning and management.Urban planning-induced internal structure complexity affects the extent of urban sprawl.In addition,urban sprawl is closely linked to eco... Accurate measurement of urban sprawl is vital for urban planning and management.Urban planning-induced internal structure complexity affects the extent of urban sprawl.In addition,urban sprawl is closely linked to economic development.The study attempts to explore the impact of urban sprawl from an economic-dominated perspective.Thus a City-Ring road-County(CRC)scale framework based on top-down administrative divisions for urban sprawl measurement is proposed:1)the single-index measurement based on economic activity is applied to calculate urban sprawl;2)the spatiotemporal pattern of urban sprawl is investigated through a case study in 31 economy-dominated provincial capital cities across China from 2005 to 2015;3)the impact of economy and land on urban sprawl is explored using correlation analysis.The results indicate that the degree of urban sprawl at the city scale shows an“inverted U-shaped”curve from 2005 to 2015,which represents that the phenomenon of urban sprawl was most severe in 2010.It finds that urban sprawl was more severe in the east and central regions relative to the provincial capitals in the western region,with the situation being most severe in the northeast region.Regions that have been transformed from suburban to urban built-up areas need to be given priority attention by the local government,including population movement,land layout,and fiscal policy,to meet the criteria of the urbanization process.Through correlation analysis,we also found that urban sprawl was influenced by the industry structure and the form of built-up area.The outcome of the study suggests that the data scale is sufficiently small in granularity to provide geographic boundaries for systematic analysis of urban sprawl in multiple administrative regions.Thus,the study helps provide a reference for differential planning policy formulation by governments at diverse economic levels. 展开更多
关键词 China urban sprawl urban planning ECONOMY land finance 31 municipalities and provincial capitals
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Sociodemographic and Economic Factors Associated with Urinary Bilharzia in the Municipalities of Sô-Ava, Aguegues and N’Dali in Benin
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作者 Josias Olutobi Ahamidé Charles Jérôme Sossa +5 位作者 Yolande Sissinto Edmond Yétongnon Pélagie Boko-Collins Romaric Tchèbè Achille Ayalè Edgard-Marius Ouendo 《Open Journal of Epidemiology》 2023年第4期342-359,共18页
Introduction: This research, conducted in the municipalities of Aguégués, Sô-Ava, and N’dali in Benin, focused on identifying socio-demographic and economic factors associated with urinary bilharzia in... Introduction: This research, conducted in the municipalities of Aguégués, Sô-Ava, and N’dali in Benin, focused on identifying socio-demographic and economic factors associated with urinary bilharzia in 415 school-aged children from 8 to 14 years. Using urine test strips and filtration techniques, the study found prevalences ranging from 11.88% to 34.53% across the municipalities. Method: Epidemiological data (urine) were collected and examined with test strips to assess the presence of terminal haematuria: the prevalence of infestation and parasite density was quantified using the filtration technique. Socio-demographic and economic factors were recorded using a questionnaire to assess the correlation with disease. Results: Prevalences of 34.53% (N = 48 out of 139), 13.53% (N = 18 out of 133) and 11.88% (N = 17 out of 143) respectively for the municipalities of Aguégués, N’dali and Sô Ava were calculated. The study showed that the variables “age”, “sex”, “religion” and “socio-professional” activity were not significantly correlated with bilharziasis (p > 0.05) and it appears that these factors are not related to bilharziasis in the surveyed households. While age, sex, religion, and socio-professional activity showed no significant correlation with bilharziasis, factors like agriculture, fishing, and place of residence were statistically significant in relation to the disease. Conclusion: The findings suggest that these socio-demographic and economic factors impede the elimination of schistosomiasis in the examined areas. 展开更多
关键词 SCHISTOSOMIASIS PREVALENCE Sociodemographic and Economic Factors municipalities School-Aged Children
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Four Large Municipalities Spurring Development Of Three Economic Rings
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《China's Foreign Trade》 2002年第4期8-11,共4页
关键词 Four Large municipalities Spurring Development Of Three Economic Rings NPC
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Social and Environmental Management in the Municipalities of Minas Gerais,Brazil
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作者 Jose Roberto Pereira Joao Batista Rezende Ana Alice Vilas Boas 《Journal of Environmental Protection》 2015年第1期64-76,共13页
The objective of this study is to analyze the ability of the public management of environmental problems faced by the municipalities in the state of Minas Gerais, Brazil. The theoretical elements that underlie this ar... The objective of this study is to analyze the ability of the public management of environmental problems faced by the municipalities in the state of Minas Gerais, Brazil. The theoretical elements that underlie this article are related to environmental management and municipal public administration. We used the results of the natural vulnerability and the social potential of the indicator of municipal environmental management, as well as data on sanitation and waste disposal. The weaknesses of public administration are located in the counties of low population group. These municipalities do not have suitable structure, formal organization and power of decisiveness in dealing with environmental problems. 展开更多
关键词 municipalities Public Administration ENVIRONMENT SUSTAINABILITY
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Landscape Evaluation of Municipalities in Ciezkowice-Roznow Regional Park in Poland
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作者 Beata Fornal-Pieniak Maciej Zolnierczuk 《Journal of Environmental Science and Engineering(A)》 2015年第11期602-606,共5页
The aim of the study was landscape evaluation of municipalities located in Ciezkowice-Roznow regional park in the southern part of Poland. The methodology includes field and indoor studies. Plant communities, natural ... The aim of the study was landscape evaluation of municipalities located in Ciezkowice-Roznow regional park in the southern part of Poland. The methodology includes field and indoor studies. Plant communities, natural 2,000 habitats, protected areas, and cultural elements have been identified. The study area has been divided into study units/plots. The next stage of research was the evaluation of landscape elements on every study unit. It distinguished areas with very high, high and moderate landscape values: Directions for shaping the landscape were formulated in the final part of the study. 展开更多
关键词 Landscape evaluation MUNICIPALITY Ciezkowice-Roznow regional park.
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Mining Contribution to Municipalities Development
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作者 Jose Aroudo Mota Jose Emanoel de Carvalho Nazairio +2 位作者 Jorge Filipe dos Santos Jose oswaldo Siqueira Paulo Cesar Horta Moreira 《Journal of Environmental Science and Engineering(B)》 2017年第8期436-442,共7页
Mining activity in Brazil has significantly contributed to the country development.However,this contribution is not always fully noticed by society.This study aims to bring more evidence to this mining activity contri... Mining activity in Brazil has significantly contributed to the country development.However,this contribution is not always fully noticed by society.This study aims to bring more evidence to this mining activity contribution,based on highly regarded development indicators,such as the HDI(Human Development Index),created by the UNDP(United Nations Development Programme).The HD1 was traditionally designed as an instrument to evaluate the degree of countries development and was subsequently deployed to states and municipalities(IDHM(Municipal Human Development Index)for Brazilian municipalities).In addition to lDHM released by the UNDP,FIRJAN(Federation of the Industries of the State of Rio de Janeiro)developed its own IFDM(FIR JAN Municipal Development Index).The statistical analysis shows that the average of the municipalities with mining activities has superior development indices than those with non-mining activities,especially in the two major mining states:Minas Gerais and Parfi. 展开更多
关键词 Mineral activity human development 1DHM(Municipal Human Development Index) IFDM(F1RJAN MunicipalDevelopment Index).
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Promoting Energy Efficiency in the Palestinian Municipalities: A Case Study of Al-Dahriya Municipality
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作者 Husain Alsamamra Iyad Isaila Jawad Shoqeir 《Smart Grid and Renewable Energy》 2021年第2期17-29,共13页
<span style="font-family:Verdana;">Energy demand overall the world increas</span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span sty... <span style="font-family:Verdana;">Energy demand overall the world increas</span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">es</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> rapidly in various sectors, one of the highest energy consumption sector is the building sector. Installation of PV systems is one of the solutions to cover this demand and will serve in promoting energy efficiency in the Palestinian municipalities in decreasing the electricity bill, and using the saved money in constructing new projects and improving the level of services provided to citizens. In this work, Al-Dahriya municipality has been taken as a case study. The municipality installed 20 KW of photovoltaic panels on the roof of the main building in 2015. The cumulative values for one year after installation the PV system represent a total consumed electricity by the main building was 71,506 kw, while the total generated power by the PV system that transferred to building was 32,664 kw, and 5323 kw exported to the grid with total generated power by PV system was 37,987 kw</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">.</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> The participation of energy that produced by the photovoltaic system is 53.12% of the total power demand of the building. The value of generated power varies between the summer months and winter months through the difference of the solar radiation intensity and the number of shinning hours, the largest reading of solar radiation intensity </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">i</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">s in the summer months. The study ensures the importance of applying selected thermal insulation materials in order to decrease the heat transfer through the boundary wall of the building. Furthermore, this study covers the other buildings and utilities of municipality and recommended </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">with </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">certain issues in order to promote energy efficiency.</span></span></span> 展开更多
关键词 Energy Efficiency Photovoltaic Panels Thermal Insulation Al-Dahriya Municipality
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Capacitating local governments for the digital earth vision:lessons learnt from the role of municipalities in the South African spatial data infrastructure 被引量:1
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作者 Lindy-Anne Siebritz Ahmad Desai +1 位作者 Serena Coetzee Antony K.Cooper 《International Journal of Digital Earth》 SCIE 2021年第12期1897-1917,共21页
The Digital Earth vision foresees the availability and accessibility of geospatial information to achieve the goals of sustainable development,economic growth and social well-being.In the case of urban areas,upto-date... The Digital Earth vision foresees the availability and accessibility of geospatial information to achieve the goals of sustainable development,economic growth and social well-being.In the case of urban areas,upto-date geospatial information is essential for managing a city towards achieving these goals.The rapid shift from rural to urban areas globally puts pressure on local governments and they often struggle to find and organise the resources required to collect and maintain geospatial information that can help to address urban growth challenges.A spatial data infrastructure(SDI)can facilitate the availability and accessibility of geospatial information towards addressing national objectives,however,the involvement of local governments in an SDI can be a challenge.In this paper,we critique the role of municipalities against the backdrop of the developments of the South African SDI(SASDI)to date.The critique identifies five high-level shortcomings of the SASDI that have led to the limited participation of municipalities.Based on the shortcomings,we provide recommendations for capacitating municipalities through SASDI so that the Digital Earth vision can also be achieved for municipalities.These recommendations are aimed at involving the local sphere of government in a national SDI and are equally applicable to other countries. 展开更多
关键词 SDI SASDI municipalities service delivery data governance
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Spatial pattern of the Chinese economy and spatial heterogeneity of its influential factors:An empirical study based on nighttime lighting data
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作者 Yifeng Hai Yuanjie Deng +2 位作者 Hang Chen Dingdi Jize Ji Luo 《Chinese Journal of Population,Resources and Environment》 2025年第2期220-235,共16页
China’s economy has developed rapidly since its reform and opening-up.However,the different rates of development in various places due to location and policies have led to significant economic differences.Based on th... China’s economy has developed rapidly since its reform and opening-up.However,the different rates of development in various places due to location and policies have led to significant economic differences.Based on the nighttime lighting data of 281 municipal spatial units in China from 2013 to 2021,this study uses spatial autocorrelation,center of gravity shift,and standard deviation ellipse(SDE)analysis to examine the evolution of the spatial pattern of China’s municipal economy.Based on these,it uses a geographically weighted regression(GWR)model to explore the factors influencing the differences in China’s municipal economy and its spatial heterogeneity.The paper reveals the following results.First,China’s municipal economy as a whole shows a growing trend.Second,the SDE shows a“north-south”distribution pattern,and the concentration of China’s economic development has slightly increased,with a significant centripetal distribution.Third,spatial correlation shows spatial positive correlation,the degree of which is increasing,with strong spatial heterogeneity and regional agglomeration.Finally,measuring the influencing factors according to GWR,the industrial structure and education expenditure coefficients generally show a decreasing trend from the southeast coast to the northwest and inland due to the degree of transformation of industrial structure and the lagging effect of education expenditure on economic growth.Conversely,the innovation driver and urban area coefficients show a decreasing trend from the northwest inland to the southeast coast due to the law of diminishing marginal utility of innovation drivers and differences in urbanization development.Government expenditure coefficients show a higher trend in the East and a lower trend in the West due to policy favoritism and market development level.This research can serve as a theoretical reference for China to achieve high-quality development and move toward common prosperity. 展开更多
关键词 Nighttime lighting data Chinese municipalities Economic disparities Geographically weighted regression(GWR)
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基于区间Ⅱ型FNN的MSWI过程炉膛温度控制 被引量:4
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作者 汤健 田昊 +1 位作者 夏恒 乔俊飞 《北京工业大学学报》 北大核心 2025年第2期157-172,共16页
针对城市固废焚烧(municipal solid waste incineration,MSWI)过程的炉膛温度难以实现有效控制的问题,提出基于区间Ⅱ型模糊神经网络(interval type-Ⅱfuzzy neural network,IT2FNN)的炉膛温度控制方法。首先,进行炉膛温度控制特性分析... 针对城市固废焚烧(municipal solid waste incineration,MSWI)过程的炉膛温度难以实现有效控制的问题,提出基于区间Ⅱ型模糊神经网络(interval type-Ⅱfuzzy neural network,IT2FNN)的炉膛温度控制方法。首先,进行炉膛温度控制特性分析以确定对其产生影响的关键操作变量;然后,根据上述操作变量基于线性回归决策树(linear regression decision tree,LRDT)建立多入单出(multiple-input single-output,MISO)炉膛温度模型;最后,构建具有自适应参数学习的IT2FNN控制器,并证明其稳定性。在MSWI过程数据集上构建模型并进行控制,实验结果验证了所提方法的有效性。 展开更多
关键词 城市固废焚烧(municipal solid waste incineration MSWI) 炉膛温度控制 线性回归决策树(linear regression decision tree LRDT) 区间Ⅱ型模糊神经网络(interval type-Ⅱfuzzy neural network IT2FNN) 梯度下降法 李雅普诺夫稳定性分析
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Green and High-Yield Recovery of Phosphorus from Municipal Wastewater for LiFePO_(4)Batteries 被引量:1
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作者 Yijiao Chang Xuan Wang +6 位作者 Bolin Zhao Anjie Li Yiru Wu Bohua Wen Bing Li Xiao-Yan Li Lin Lin 《Engineering》 2025年第2期234-242,共9页
The rapidly growing demand for lithium iron phosphate(LiFePO_(4))as the cathode material of lithium-ion batteries(LIBs)has aggravated the scarcity of phosphorus(P)reserves on Earth.This study introduces an environment... The rapidly growing demand for lithium iron phosphate(LiFePO_(4))as the cathode material of lithium-ion batteries(LIBs)has aggravated the scarcity of phosphorus(P)reserves on Earth.This study introduces an environmentally friendly and economical method of P recovery from municipal wastewater,providing the P source for LiFePO_(4) cathodes.The novel approach utilizes the sludge of Fe-coagulant-based chemical P removal(CPR)in wastewater treatment.After a sintering treatment with acid washing,the CPR sludge,enriched with P and Fe,transforms into purified P-Fe oxides(Fe2.1P1.0O5.6).These oxides can substitute up to 35%of the FePO_(4) reagent as precursor,producing a carbon-coated LiFePO_(4)(LiFePO_(4)/C)cathode with a specific discharge capacity of 114.9 mA·h·g^(-1)at current density of 17 mA·g^(-1)),and cycle stability of 99.2%after 100 cycles.The enhanced cycle performance of the as-prepared LiFePO_(4)/C cathode may be attributed to the incorporations of impurities(such as Ca^(2+)and Na^(+))from sludge,with improved stability of crystal structure.Unlike conventional P-fertilizers,this P recovery technology converts 100%of P in CPR sludge into the production of value-added LiFePO_(4)/C cathodes.The recovered P from municipal wastewater can meet up to 35%of the P demand in the Chinese LIBs industry,offering a cost-effective solution for addressing the pressing challenges of P scarcity. 展开更多
关键词 Municipal wastewater Chemical phosphorus removal sludge Lithium iron phosphate Lithium-ion batteries Phosphorus recovery
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基于TS模糊森林回归的MSWI过程粉尘浓度预测
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作者 梁永琪 汤健 +2 位作者 夏恒 许超凡 乔俊飞 《北京工业大学学报》 北大核心 2025年第12期1515-1526,共12页
针对城市固废焚烧(municipal solid waste incineration,MSWI)过程粉尘预测模型缺失导致污染物排放浓度难以高效控制的问题,构建基于Takagi-Sugeno(TS)模糊森林回归(TS fuzzy forest regression,TSFFR)的MSWI过程粉尘浓度预测模型。首先... 针对城市固废焚烧(municipal solid waste incineration,MSWI)过程粉尘预测模型缺失导致污染物排放浓度难以高效控制的问题,构建基于Takagi-Sugeno(TS)模糊森林回归(TS fuzzy forest regression,TSFFR)的MSWI过程粉尘浓度预测模型。首先,针对原始粉尘数据集采用特征随机采样策略产生设定数量的训练子集;接着,针对每个训练子集构建TS决策树(TS decision tree,TSDT)子模型,其包括基于筛选层非叶节点的特征筛选和基于模糊推理层叶节点的TS推理2层结构,后者的前件部分通过标准正态分布和均匀分布策略初始化,采用反向传播算法更新参数,后件部分通过先验知识初始化权重策略更新参数;最后,采用伪逆方式集成全部子模型以获得TSFFR模型,从而预测粉尘排放浓度。采用北京某MSWI厂的工业现场粉尘数据验证了所提方法的有效性。 展开更多
关键词 城市固废焚烧(municipal solid waste incineration MSWI) 粉尘浓度预测 特征筛选 Takagi-Sugeno(TS)模糊推理 决策树 模糊森林回归
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基于扩散模型图像增强与多类特征融合的火焰燃烧状态智能识别
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作者 汤健 杨薇薇 +2 位作者 夏恒 崔璨麟 乔俊飞 《北京工业大学学报》 北大核心 2025年第12期1502-1514,共13页
针对领域专家依据经验判断城市固废焚烧(municipal solid waste incineration,MSWI)过程中的火焰燃烧状态具有随意性、主观性和差异性,以及高质量火焰图像稀少等问题,提出基于去噪扩散概率模型(denoising diffusion probabilistic model... 针对领域专家依据经验判断城市固废焚烧(municipal solid waste incineration,MSWI)过程中的火焰燃烧状态具有随意性、主观性和差异性,以及高质量火焰图像稀少等问题,提出基于去噪扩散概率模型(denoising diffusion probabilistic model,DDPM)的图像增强与多类特征融合的火焰燃烧状态识别方法。首先,利用DDPM生成虚拟火焰图像以弥补高质量建模图像稀缺问题;然后,对由真实和虚拟图像混`合得到的建模数据采用LeNet-5模型提取深度特征,同时提取火焰图像的亮度、范围和颜色等物理特征;最后,面向上述混合特征构建基于深度森林分类(deep forest classification,DFC)的火焰燃烧状态识别模型。基于实际MSWI过程火焰图像验证了该方法的有效性和优越性。 展开更多
关键词 城市固废焚烧(municipal solid waste incineration MSWI) 火焰燃烧状态识别 去噪扩散概率模型(denoising diffusion probabilistic model DDPM) 深度特征 物理特征 深度森林分类(deep forest classification DFC)
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