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Constructing a toilet standard system for the toilet revolution in China 构建中国厕所革命的厕所标准体系
Pub Date : 2024-04-10 DOI: 10.2166/washdev.2024.083
Shikun Cheng, Ziwang Ye, Xinying Li, Musa Manga, C. Dórea, Zhengxian Chen, Zifu Li, Xiaolei Ma, Heinz-Peter Mang, Tianxin Li
Access to adequate and secure sanitation to prevent and reduce disease occurrence and improve people's health has been a longstanding global concern. Toilet standardization is immensely important for the promotion of sanitation in China. At present, China has more than 200 toilet-related standards, including national, industrial, provincial, association, and enterprise standards. In addition, there are many existing problems of the standard system, such as standards lagging, standards deficiency, and cross-repetition of standards content. This study analyzed the toilet standards utilizing a six-dimensional structure of the standardized system engineering methodology. A framework for the toilet standard system, which consists of six components, is proposed: basic general standard, public toilet standard, household toilet standard, toilet hardware standard, environmental health and safety standard, and toilet accessory standard and standard toilet peripherals. Additionally, the study suggests approaches for improving standardization including cultivating and developing association and enterprise standards, establishing a standardization technical committee, strengthening standard publicizing and implementation, and linkages with international standards.
获得充足、安全的卫生设施,以预防和减少疾病的发生,提高人们的健康水平,是全球长期关注的问题。厕所标准化对促进中国的环境卫生事业发展具有十分重要的意义。目前,中国已有 200 多项与厕所相关的标准,包括国家标准、行业标准、省级标准、协会标准和企业标准。此外,标准体系还存在标准滞后、标准缺失、标准内容交叉重复等诸多问题。本研究利用标准化系统工程方法的六维结构对厕所标准进行了分析。提出了由基本通用标准、公共厕所标准、家用厕所标准、厕所硬件标准、环境卫生与安全标准、厕所附件标准和厕所外围设备标准六部分组成的厕所标准体系框架。此外,研究还提出了完善标准化的方法,包括培育和发展协会和企业标准、建立标准化技术委员会、加强标准的宣传和实施、与国际标准接轨等。
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引用次数: 0
Surface water contamination with Acanthamoeba spp. in Ilam city, Iran 伊朗伊拉姆市的地表水受到阿卡阿米巴属的污染
Pub Date : 2024-04-05 DOI: 10.2166/washdev.2024.153
Azadeh Ghadesi, Hamid Hasanpour, R. Naserifar, Jahangir Abdi, M. Mahmoudi, H. Turki, O. Raiesi, Muhammad Ibrahim Getso, Asad Mirzaei
Acanthamoeba, a widely distributed free-living amoeba with 20 genotypes identified through rRNA gene sequencing, exhibits varying degrees of pathogenicity influenced by its genotype. This study focuses on assessing the prevalence of Acanthamoeba species in the surface waters of Ilam, located in western Iran, utilizing morphological analysis and sequencing of the 18S rRNA gene through the PCR method. A total of 50 water samples were collected from various regions within Ilam city, situated in the southwest of Iran. To isolate Acanthamoeba parasites from the samples, a culture method was used, and all utilized culture media were scrutinized through microscopic and molecular techniques. The parasite's genotype was determined by sequencing a 500-bp fragment of the 18S rRNA gene. Using microscopic and molecular methods, 19 and 16 water samples tested positive, respectively. The 18S rRNA sequences revealed that the isolates belonged to the T4, T2, and T11 genotypes. This study emphasizes the presence and inclination for close contact with highly pathogenic genotypes of Acanthamoeba in the surface waters of Ilam City.
阿卡阿米巴是一种广泛分布的自由生活阿米巴,通过 rRNA 基因测序确定了 20 种基因型,其致病性受基因型的影响程度不同。本研究主要通过形态分析和 PCR 方法对 18S rRNA 基因进行测序,评估伊朗西部伊拉姆地表水中阿卡阿米巴物种的流行情况。从位于伊朗西南部的伊拉姆市内不同地区共采集了 50 份水样。为了从样本中分离出棘阿米巴寄生虫,采用了培养方法,并通过显微镜和分子技术对所有使用的培养基进行了仔细检查。通过对 18S rRNA 基因的 500-bp 片段进行测序,确定了寄生虫的基因型。通过显微镜和分子方法,分别有 19 份和 16 份水样检测结果呈阳性。18S rRNA 序列显示,这些分离株属于 T4、T2 和 T11 基因型。这项研究强调了伊拉姆市地表水中存在高致病性基因型的棘阿米巴,并倾向于与之密切接触。
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引用次数: 0
Beyond a facility: water, sanitation and hygiene service levels and informal social accountability in childcare centres in informal settlements 设施之外:非正规住区儿童保育中心的水、环境卫生和个人卫生服务水平以及非正规社会问责制
Pub Date : 2024-03-28 DOI: 10.2166/washdev.2024.177
Ivy Chumo, Caroline W. Kabaria, Penelope A. Phillips-Howard, Hellen Gitau, Helen Elsey, B. Mberu
Growing up in a safe environment is every child's right. Access to clean water, sanitation and hygiene (WASH) services not only keep children thriving, but also gives them a healthier start in life. Social accountability is potentially a contributor to improved WASH services in childcare centres. This study assessed the association between informal social accountability mechanisms (iSAMs) and the levels in the WASH service ladder in childcare centres. A cross-sectional survey was conducted with childcare providers in Korogocho and Viwandani in Nairobi, Kenya. We explored the association between the WASH service ladder variables (dependent variable) and iSAM (independent variable), using multinomial regression with a robust error variance estimator. Access to basic WASH was relatively higher on the measurement ladder in childcare centres in Korogocho than in Viwandani. A higher proportion of centres had access to basic WASH services compared to limited and no services in both study sites. In the model comparing basic service vs no facility/services, participants who used rewards, sanctions and responsiveness (versus not used) in sanitation services were more likely to have basic services. Data contribute towards a significant understanding of the role of iSAMs as a key component for strengthening WASH service delivery in childcare centres.
在安全的环境中成长是每个儿童的权利。获得清洁水、环境卫生和个人卫生(WASH)服务不仅能让儿童茁壮成长,还能让他们的人生有一个更健康的开端。社会责任可能有助于改善托儿所的 "讲卫生运动 "服务。本研究评估了非正式社会问责机制(iSAMs)与托儿所讲卫生运动服务阶梯水平之间的关联。我们对肯尼亚内罗毕 Korogocho 和 Viwandani 的托儿所进行了横向调查。我们使用多项式回归法和稳健误差方差估计法探讨了讲卫生运动服务阶梯变量(因变量)和 iSAM(自变量)之间的关联。与维旺达尼相比,科罗戈乔的托儿中心在测量阶梯上获得基本讲卫生服务的比例相对较高。在这两个研究地点,与有限服务和无服务相比,获得基本讲卫生服务的中心比例更高。在基本服务与无设施/服务的比较模型中,在卫生服务中使用奖励、制裁和响应(与未使用)的参与者更有可能获得基本服务。这些数据有助于深入了解 iSAMs 作为加强托儿所提供讲卫生运动服务的关键组成部分所发挥的作用。
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引用次数: 0
Tolerance of free-floating aquatic macrophytes to sugarcane vinasse and its implications for phytoremediation strategies 自由漂浮的水生大型植物对甘蔗渣的耐受性及其对植物修复战略的影响
Pub Date : 2024-03-22 DOI: 10.2166/washdev.2024.240
Luís Fernando Pereira de Brito, E. L. Espíndola, A. P. Ogura
Sugarcane vinasse is a byproduct of the ethanol industry that has been associated with environmental impacts, including ecotoxicity. However, several nature-based alternatives have been studied to attenuate environmental pollution, including phytoremediation. In such a scenario, this research aimed to evaluate the phytotoxicity of vinasse to aquatic plants, assessing the tolerance of three free-floating aquatic macrophytes, namely Eichhornia crassipes, Pistia stratiotes, and Salvinia auriculata. Five vinasse proportions (up to 20%) were considered to assess the short-term growth of aquatic plants. P. stratiotes and S. auriculata were more sensitive to vinasse than E. crassipes, which showed resistance at 10 and 20%. Lower dilutions were non-toxic and even stimulated the growth of macrophytes, which might contribute to the uptake of nutrients and potentially toxic elements. The selection of tolerant species contributes to the application of phytotechnologies, and the studied plants might have potential for the phytoremediation of vinasse.
甘蔗渣是乙醇工业的副产品,与环境影响(包括生态毒性)有关。然而,人们已经研究了几种基于自然的替代方法来减轻环境污染,其中包括植物修复。在这种情况下,本研究旨在评估蔗渣对水生植物的植物毒性,评估三种自由浮游的水生大型植物(即 Eichhornia crassipes、Pistia stratiotes 和 Salvinia auriculata)的耐受性。为评估水生植物的短期生长情况,考虑了五种蔗渣比例(最高为 20%)。P. stratiotes 和 S. auriculata 比 E. crassipes 对蔗渣更敏感,后者在 10% 和 20% 的比例下表现出抗性。较低稀释度的甘蔗渣无毒,甚至会刺激大型水生植物的生长,这可能有助于吸收养分和潜在的有毒元素。耐受性物种的选择有助于植物技术的应用,所研究的植物可能具有对蔗渣进行植物修复的潜力。
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引用次数: 0
Experiences of community-based water supply organizations partnerships in rural areas of Colombia 哥伦比亚农村地区社区供水组织伙伴关系的经验
Pub Date : 2024-03-12 DOI: 10.2166/washdev.2024.246
Carolina Blanco-Moreno, Jorge Amaya-Domínguez, Andrea Yolima Bernal-Pedraza
Clean water for human consumption in rural areas of Latin America and the Caribbean is usually provided by community-based water supply organizations (CBWSOs). Collaborative partnerships with community-based water supply organizations (CBWSOPs) are established to tackle technical and institutional challenges concerning safe water supply. This article analyses some features of the CBWSOs and their partnerships, based on the experience of ACUANARIÑO and ASDAL – Tres Esquinas, two CBWSOs located in Valle del Cauca – Colombia, following their participation at the local, municipal (ASOOCSAS Tuluá), subnational (Asociación de Organizaciones Comunitarias Prestadoras de Servicios Públicos de Agua y Saneamiento de Colombia (AQUACOL)), national (COCSASCOL), and transnational levels (CLOCSAS). The main findings of this work, after using a participatory approach, are that initial partnerships between CBWSOs emerge from informal agreements built on the neighbourhood logic typical of rurality; however, as moving towards higher scales, agreements become more formal to allow for dialogue and discussion with governmental organizations in the water and sanitation sector. This is also a strategy for the recognition of community water management. Thus, CBWSOPs are construed under a collaborative and non-profit approach, in the manner of water operator partnerships.
拉丁美洲和加勒比农村地区的清洁饮用水通常由社区供水组织(CBWSOs)提供。与社区供水组织(CBWSOPs)建立合作伙伴关系是为了应对安全供水方面的技术和制度挑战。本文以哥伦比亚考卡山谷的两个社区供水组织 ACUANARIÑO 和 ASDAL - Tres Esquinas 的经验为基础,分析了社区供水组织及其合作关系的一些特点、在参与了地方、市级(图卢阿公共供水服务组织 ASOOCSAS)、次国家级(哥伦比 亚公共供水和卫生服务社区组织协会 AQUACOL)、国家级(哥伦比亚公共供水和 卫生服务组织 COCSASCOL)和跨国级(哥伦比亚公共供水和卫生服务组织 CLOCSAS) 的活动之后,这两个社区供水和卫生组织取得了一些经验。在采用参与式方法后,这项工作的主要发现是,社区、水利和社会组织之间的最初合作关系是建立在典型的乡村邻里逻辑基础上的非正式协议;然而,随着规模的扩大,协议变得更加正式,以便与水和卫生部门的政府组织进行对话和讨论。这也是承认社区水管理的一种策略。因此,CBWSOP 是以合作和非营利的方式,按照水经营者伙伴关系的方式来理解的。
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引用次数: 0
Menstrual hygiene management in the remote rural highlands of eastern Indonesia 印度尼西亚东部偏远农村高地的经期卫生管理
Pub Date : 2024-03-07 DOI: 10.2166/washdev.2024.183
I. Assa, D. Bouway, Herbert Innah, Frans Asmuruf, Anike Bowaire, Agustina Yufuai, Maria Hukubun, Olivia Sawias, Widyawati Ratnasariani, D. Daniel
Menstrual Hygiene Management (MHM) is essential for women's health, but it is often regarded as a taboo topic. This study investigates the practice of MHM in rural and remote Indonesian highlands. A cross-sectional study was conducted among 492 adolescent girls and adult women in the Jayawijaya and Central Mamberamo Districts of Papua Province. Principal component analysis and multiple regression analyses were used to examine the relationships among the respondents' knowledge, attitudes, and MHM practices. The perception that discussing MHM is taboo exists in this area, and certain cultural rituals are associated with a young girl's first period. The respondents have moderate knowledge and attitudes regarding MHM. Furthermore, their practices after using sanitary pads are unhygienic, and may increase the risk of reproductive tract infections, and may pollute the environment. Some variables are positively associated with appropriate MHM practice, namely knowledge of MHM, the perception that menstruation must be kept private, and the importance of using sanitary pads. Finally, the results show that schools do not provide a supportive environment for girls during their period. Overall, there is a need to increase MHM knowledge and foster positive attitudes to enhance healthy MHM among women in the rural and remote highlands of Indonesia.
经期卫生管理(MHM)对女性健康至关重要,但却往往被视为一个禁忌话题。本研究调查了印度尼西亚农村和偏远高地的经期卫生管理实践。研究人员对巴布亚省 Jayawijaya 和 Central Mamberamo 地区的 492 名少女和成年妇女进行了横断面研究。研究采用了主成分分析和多元回归分析法来考察受访者的知识、态度和 MHM 实践之间的关系。在该地区,人们认为讨论母婴传播是禁忌,而且某些文化仪式与少女的初潮有关。受访者对母婴传播的认识和态度一般。此外,她们使用卫生护垫后的做法不卫生,可能会增加生殖道感染的风险,并可能污染环境。一些变量与适当的产妇保健做法呈正相关,即产妇保健知识、月经必须保密的观念和使 用卫生护垫的重要性。最后,研究结果表明,学校并没有为处于经期的女孩提供一个有利的环境。总之,有必要增加产妇保健知识,培养积极的态度,以加强印度尼西亚农村和偏远高地妇女健康的产妇保健。
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引用次数: 0
Relation of organic fractions in fresh and stored fecal sludge and foodwaste to biogas production 新鲜和储存的粪便污泥和食物垃圾中的有机成分与沼气生产的关系
Pub Date : 2024-03-06 DOI: 10.2166/washdev.2024.319
Nida Maqbool, S. Sam, Sher Jamal Khan, L. Strande
There is limited understanding of the potential for anaerobic digestion and biogas production from fecal sludge. In this study, biomethane potential (BMP) tests from fresh, stored, and dewatered fecal sludge, together with co-digestion with fresh foodwaste, revealed that fresh fecal sludge produced similar cumulative biogas (CBG) to fresh foodwaste (615–627 mL/gVS), while stored fecal sludge showed a wide range of gas production (13–449 mL/gVS). Co-digestion significantly enhanced the CBG production of fresh (1.2×), dewatered (1.5×), and stored (29–36×) fecal sludge. In BMP tests with the higher range of gas production, a biphasic CBG production was observed, with degradation of readily biodegradable organics occurring during the first week. The first-order rate coefficients indicated hydrolysis limitation, which was also confirmed by the presence of slow-growing methanogens (Halobacterota). Priming with co-digestion significantly enhanced CBG from stored fecal sludge. The physical–chemical metrics VS/TS and TOC/TN were not predictors of biogas production, while BOD/COD and sCOD were better indicators, suggesting that metrics of stabilization representing biologically available fractions are more representative than metrics of entire pools of organic matter. This study suggests that biogas production from anaerobic digestion is viable for fresh fecal sludge, whereas for stored fecal sludge, this requires co-treatment or pretreatment.
人们对粪便污泥厌氧消化和生产沼气的潜力了解有限。在这项研究中,对新鲜、贮存和脱水粪便污泥的生物甲烷潜力(BMP)以及与新鲜食物垃圾的协同消化进行了测试,结果表明,新鲜粪便污泥产生的累积沼气(CBG)与新鲜食物垃圾相似(615-627 mL/gVS),而贮存粪便污泥的产气量范围较广(13-449 mL/gVS)。协同消化大大提高了新鲜污泥(1.2 倍)、脱水污泥(1.5 倍)和储存污泥(29-36 倍)的 CBG 产量。在产气量范围较高的生物处理厂试验中,观察到双相 CBG 产气量,易生物降解有机物的降解发生在第一周。一阶速率系数表明水解受到限制,生长缓慢的甲烷菌(Halobacterota)的存在也证实了这一点。通过协同消化进行预处理,可显著提高贮存粪便污泥的 CBG。物理化学指标 VS/TS 和 TOC/TN 不能预测沼气产量,而 BOD/COD 和 sCOD 则是更好的指标,这表明代表生物可用部分的稳定化指标比整个有机物池的指标更具代表性。这项研究表明,厌氧消化产生沼气对新鲜粪便污泥是可行的,而对储存的粪便污泥则需要协同处理或预处理。
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引用次数: 0
Water and food insecurity and linkages with physical and sexual intimate partner violence among urban refugee youth in Kampala, Uganda: cross-sectional survey findings 乌干达坎帕拉城市难民青年的水和粮食不安全状况及其与身体暴力和亲密伴侣性暴力之间的联系:横断面调查结果
Pub Date : 2024-03-01 DOI: 10.2166/washdev.2024.298
Carmen H. Logie, Moses Okumu, Lauren Tailor, L. Taing, C. Dórea, Lawrence Mbuagbaw, R. Hakiza, Daniel Kibuuka-Musoke, Brenda Katisi, Aidah Nakitende, Peter Kyambadde, Frannie MacKenzie, Zerihun Admassu
Water insecurity (WI) and food insecurity (FI), each associated with violence exposure, are understudied in urban humanitarian settings. We conducted a cross-sectional survey with urban refugee youth in Kampala, Uganda to examine: (a) social-ecological correlates of WI, FI, and concurrent FI and WI; (b) associations between WI and FI with recent sexual and physical intimate partner violence (IPV); and (c) associations between an Index of Vulnerability (IoV) comprised of social-ecological stressors (e.g., FI, WI) and recent physical/sexual IPV. Among participants (n = 340; mean age: 21.1 years, standard deviation: 2.6) almost half (47.8%) reported WI and two-thirds (65.0%) FI. In adjusted analyses, time in Uganda, age, and insecure housing were associated with increased odds of WI and concurrent FI and WI; household toilet sharing and insecure housing were associated with increased odds of FI. In adjusted analyses, WI, concurrent FI and WI, housing insecurity, and parenthood were associated with higher sexual IPV odds. FI and parenthood were associated with increased odds of physical IPV. IoV scores were associated with physical/sexual IPV, and IoV scores accounted for more variance in physical/sexual IPV than any individual indicator. Future research can address WI and co-occurring resource insecurities to reduce gender-based water violence risks.
在城市人道主义环境中,水资源不安全(WI)和粮食不安全(FI)都与暴力事件有关,但对这两种情况的研究却很少。我们对乌干达坎帕拉的城市难民青年进行了一项横断面调查,以研究:(a) WI、FI以及同时发生的FI和WI的社会生态相关性;(b) WI和FI与近期亲密伴侣性暴力和身体暴力(IPV)之间的关联;(c) 由社会生态压力源(如FI、WI)组成的脆弱性指数(IoV)与近期身体/性暴力IPV之间的关联。在参与者(n = 340;平均年龄:21.1 岁,标准差:2.6)中,近一半(47.8%)报告了 WI,三分之二(65.0%)报告了 FI。在调整分析中,在乌干达的时间、年龄和住房不安全与 WI 以及同时出现 FI 和 WI 的几率增加有关;家庭共用厕所和住房不安全与 FI 的几率增加有关。在调整分析中,WI、同时存在的 FI 和 WI、住房不安全以及父母身份与较高的 IPV 性犯罪几率相关。FI 和父母身份与身体 IPV 的几率增加有关。IoV 评分与身体/性 IPV 相关,IoV 评分在身体/性 IPV 变异方面的作用大于任何单个指标。未来的研究可以解决 WI 和同时存在的资源不安全问题,以降低基于性别的水暴力风险。
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引用次数: 0
Brackish water pre-treatment method: selection of the study area and water sample testing 咸水预处理方法:研究区域的选择和水样检测
Pub Date : 2024-03-01 DOI: 10.2166/washdev.2024.294
Youssouf E. L. Idrissi, Mohamed Benabbou, Zakia Rais, Mounia E. L. Haji
Climate change significantly disrupts the global water cycle, impacting rainfall and social and economic development in countries like Morocco. This has led to the need for alternative solutions like desalinating sea and brackish water. However, the efficiency of water pre-treatment operations depends on the characteristics of the raw water to be treated and affects the overall system's performance in terms of water quality and cost. The final objective of this study is to design a solar-powered brackish pre-treatment technique before desalination process for remote rural population. The primary task is to select the most suitable geographical area in Morocco for sampling and analysis of water characteristics and their compliance with drinking water standards. The results help identify the most appropriate provinces for our case according to certain selection criteria (distance, annual solar radiation, rural population, access to drinking water) and analyse the water's characteristics and compliance with national or international drinking water health standards. This provides a solid foundation for the next stages of desalination method development.
气候变化严重破坏了全球水循环,影响了降雨量以及摩洛哥等国的社会和经济发展。因此,人们需要海水和苦咸水淡化等替代解决方案。然而,水预处理操作的效率取决于待处理原水的特性,并在水质和成本方面影响整个系统的性能。本研究的最终目标是为偏远农村人口设计一种海水淡化工艺前的太阳能微咸水预处理技术。主要任务是在摩洛哥选择最合适的地理区域,对水的特性及其是否符合饮用水标准进行采样和分析。研究结果有助于根据某些选择标准(距离、年太阳辐射、农村人口、获得饮用水的机会)确定最适合我们案例的省份,并分析水的特征及其是否符合国家或国际饮用水卫生标准。这为下一阶段的海水淡化方法开发奠定了坚实的基础。
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引用次数: 0
Discrimination between scheduled and non-scheduled groups in access to basic services in urban India 印度城市在册群体与非在册群体在获得基本服务方面存在的歧视
Pub Date : 2024-02-17 DOI: 10.2166/washdev.2024.138
Tarun Arora, Prashant Kumar Choudhary
Access to basic services such as water, sanitation, and electricity is a key determinant of an individual's well-being. Nevertheless, access to these services is unequally distributed among different social groups in many countries. India is no exception, with the scheduled castes (SC) and scheduled tribes (ST) being one of the country's most marginalised and disadvantaged groups. This paper analyses the disparities in access to basic services between scheduled and non-scheduled households, investigates the factors contributing to the unequal access, and suggests policy recommendations. Using data from the National Sample Survey 76th Round, we analyse the access to basic services such as durable housing, improved water and sanitation, and access to electricity. The paper's objectives are (a) to investigate the factors impacting the quality of basic service delivery in urban India separately for scheduled and non-scheduled households and (b) to quantify the discrimination between scheduled and non-scheduled households in urban India concerning access to quality of basic services through computing a comprehensive index and by using the ‘Fairlie decomposition’ approach. The analysis corroborates the finding that systemic discrimination exists between scheduled and non-scheduled households in urban India regarding access to good quality basic services up to an extent of 24%.
获得水、卫生设施和电力等基本服务是决定个人福祉的关键因素。然而,在许多国家,这些服务在不同社会群体之间的分配并不平等。印度也不例外,在册种姓(SC)和在册部落(ST)是印度最边缘化和最弱势的群体之一。本文分析了在册家庭和非在册家庭在获得基本服务方面的差距,调查了造成不平等的因素,并提出了政策建议。利用第 76 轮全国抽样调查的数据,我们分析了获得耐用住房、改善用水和卫生条件以及用电等基本服务的情况。本文的目标是:(a) 针对在册家庭和非在册家庭,分别调查影响印度城市基本服务质量的因素;(b) 通过计算综合指数和使用 "费尔利分解 "方法,量化印度城市在册家庭和非在册家庭在获得基本服务质量方面存在的歧视。分析结果证实,印度城市在册家庭和非在册家庭在获得优质基本服务方面存在系统性歧视,歧视程度高达 24%。
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Journal of Water, Sanitation and Hygiene for Development
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