analytical hierarchy process

层次分析法
  • 文章类型: Journal Article
    野生动物种群的管理和保护计划的制定取决于野生动物栖息地的评估。栖息地适宜性制图是一种通常用于绘制适当的环境因素并评估不同地区物种存在的技术。这项研究旨在绘制前Dhidhessa野生动物保护区的野生动物栖息地适宜性图,埃塞俄比亚,采用基于GIS的层次分析法和加权线性组合方法。这项研究使用了主要和次要数据源。用于收集数据的数据集包括数字高程模型(DEM)、Landsat9(OLI/TIRS)和人口数据。旁边,使用从野外调查获得的大型哺乳动物物种发生数据。要绘制前Dhidhessa野生动物保护区的野生动物栖息地适宜性地图,环境因素,如路网的接近度,到地表水的距离,土地利用土地覆盖类型,斜坡,种群密度和地形与从研究区记录的物种发生数据的整合。这些环境因素按比例缩放到普通范围,并分配适当的权重。分位数分类方法将适合度指数分为五个区域(不适合,不太合适,适度适合,合适,并且非常适合)制作地图。因此,模型显示,18.9%的研究区域是高度合适的,19.5%是合适的,19.9%是中等合适的,19.5%不太合适,22.2%不适合野生动物。目前约有58.3%的研究区域被确定为适合野生动物,而41.7%的研究区域不适合。这表明,前Dhidhessa野生动物保护区仍然拥有大型合适的栖息地,可以支持广泛的野生动物。因此,根据开发的初步栖息地适宜性指数和地图,联邦和地方政府应重新评估前Dhidhessa野生动物保护区的状况,并制定未来的保护和管理计划,以加强对该地区野生动物及其栖息地的保护。
    Management of wildlife populations and the creation of conservation programs depend on the evaluation of wildlife habitats. Habitat suitability mapping is a technique typically used to map appropriate environmental factors and assess species existence in different areas. This study aims to map wildlife habitat suitability sites in Former Dhidhessa wildlife sanctuary, Ethiopia, using GIS-based Analytical Hierarchal Process and Weighted Linear Combination Methods. This study used both primary and secondary data sources. Datasets used to collect data include Digital Elevation Model (DEM), Landsat 9 (OLI/TIRS) and population data. Beside, large mammalian species occurrence data obtained from field survey was used. To map wildlife habitat suitability sites in Former Dhidhessa wildlife sanctuary, environmental factors such as proximity of road network, distance to surface water, land use land cover types, slope, population density and topography were used with the integration of species occurrence data recorded from the study area. These environmental factors scaled to common ranges, and assigned appropriate weights. The quantile classification method was utilized to classify suitability index into five zones (unsuitable, less suitable, moderately suitable, suitable, and highly suitable) to produce the map. Accordingly, the model revealed that 18.9 % of the study area is highly suitable, 19.5 % is suitable, 19.9 % is moderately suitable, 19.5 % is less suitable, and 22.2 % is unsuitable for wildlife. About 58.3 % of the study area is currently identified as suitable for wildlife whereas 41.7 % is unsuitable. This showed that the former Dhidhessa wildlife sanctuary is still having large suitable habitats that can support wide ranges of wildlife. Hence, based on the developed preliminary habitat suitability indices and maps, the federal and local governments shall reevaluate the status of former Dhidhessa wildlife sanctuary and develop future conservation and management plans to enhance the conservation of wildlife and their habitats in the area.
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  • 文章类型: Journal Article
    背景本研究旨在使用层次分析法(AHP)方法确定阿曼医疗保健部门的可持续性优先事项。主要是,它侧重于评估经济的相对重要性,环境,社会因素及其在维持阿曼医疗体系中的子要素。方法学半定量,采用横断面设计,从阿曼5家不同公立医院至少有10年经验的23名阿曼医疗保健专家那里收集数据.AHP方法用于分析可持续性因素的成对比较,并得出它们的优先级。计算一致性比率以确保分析的可靠性,并应用传递性规则来解决成对比较中的不一致问题。结果研究结果表明,人们非常重视环境和社会的可持续性,经济方面的考虑相对较低。循环做法成为环境领域的一个关键优先事项,而患者满意度在社会领域中脱颖而出。分析表明,医疗保健之间的整合,环境卫生,和社会福祉,强调需要采取整体的可持续性方法。结论本研究通过提供阿曼医疗保健系统中利益相关者偏好的经验证据,有助于对医疗保健可持续性的理解。通过定量评估经济的相对重要性,环境,和社会因素,它为可持续医疗保健发展提供决策和资源分配信息。研究结果还支持了医疗保健可持续性综合方法的论点,该方法可以平衡经济效率与环境保护和社会包容。
    Background This study aimed to identify sustainability priorities within Oman\'s healthcare sector using the analytical hierarchy process (AHP) methodology. Mainly, it focused on assessing the relative importance of economic, environmental, and social factors and their sub-elements in sustaining Oman\'s healthcare system. Methodology A semi-quantitative, cross-sectional design was employed to collect data from 23 Omani healthcare experts with at least 10 years of experience in five different public hospitals in Oman. The AHP methodology was used to analyze pairwise comparisons of sustainability factors and derive their priorities. The consistency ratio was calculated to ensure the reliability of the analysis, and the transitivity rule was applied to address inconsistencies in pairwise comparisons. Results The findings revealed a strong emphasis on environmental and social sustainability, with economic considerations ranking comparatively lower. Circular practices emerged as a key priority within the environmental domain, while patient satisfaction stood out within the social domain. The analysis showed the integration between healthcare, environmental health, and societal well-being, emphasizing the need for holistic approaches to sustainability. Conclusions This study contributes to the understanding of healthcare sustainability by providing empirical evidence of stakeholder preferences within Oman\'s healthcare system. By quantitatively assessing the relative importance of economic, environmental, and social factors, it informs decision-making and resource allocation toward sustainable healthcare development. The findings also support the argument for integrated approaches to healthcare sustainability that balance economic efficiency with environmental protection and social inclusion.
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  • 文章类型: Journal Article
    为了探讨典型冶炼厂污染场地地下水中重金属的特征并评估其风险,本研究集中在中国西南地区一个具有代表性的历史砷冶炼厂,其中主要的历史产品是金属砷(~1000吨/年)和三氧化二砷(~2000吨/年)。结果表明,As和Pb是土壤中的主要污染物,通过土壤剖面和季度地下水分析,将As和Cd作为地下水中的主要污染物。表层土壤中As和Pb的最大值分别为76800和2290mg/kg,分别,垂直渗入深层砾石砂层(18-20米)。地下水污染分布沿流向逐渐增加,受季节性地表径流和入渗波动的影响。旱季地下水污染物浓度明显超过雨季,旱季最大As和Cd浓度分别为111.64mg/L和19.85μg/L,分别。此外,采用层次分析法(AHP)对污染场地跨污染源负荷的综合风险进行评价,区域地下水内在脆弱性,并评估附近的敏感受体。结果表明,铅在表层土壤中的致癌风险中等到较高,虽然砷具有很高的致癌风险,导致表层土壤中总致癌风险比例为89.6%。通过地下水摄入的暴露被确定为主要途径,具有超过通过皮肤接触的致癌和非致癌风险。最终权重结果表明,主要风险因素是该地点区域地下水的内在砷负荷和保护目标特征。该研究为类似污染的工业和冶炼场所的综合评估提供了参考。
    To explore the characteristics and evaluate the risk of heavy metals in groundwater at a typical smelter-contaminated site, this study focuses on a representative a historical arsenic smelting plant in Southwest China, where the primary historical products were metallic arsenic (∼1000 tons/year) and arsenic trioxide (∼2000 ton/year). The results demonstrated As and Pb as the main pollutants in soil, and As and Cd as main pollutants in groundwater through soil profiling and quarterly groundwater analysis. The maximum As and Pb in the surface soil were 76800 and 2290 mg/kg, respectively, with As vertically infiltrating the deep gravel-sand layer (18-20 m). The groundwater pollution distribution progressively increased along flow direction, influenced by seasonal surface runoff and infiltration fluctuations. The groundwater pollutant concentrations during the dry season notably surpassed those during the wet season, with maximum As and Cd concentrations of 111.64 mg/L and 19.85 μg/L during the dry season, respectively. Furthermore, the analytic hierarchy process (AHP) was applied to evaluate the comprehensive risk of contaminated-site across pollution source load, regional groundwater intrinsic vulnerability, and evaluation of nearby sensitive receptors. The results revealed that the carcinogenic risk of lead in surface soil was moderate to high, while arsenic posed a high carcinogenic risk, contributing to an overall carcinogenic risk proportion of 89.6% in surface soil. Exposure through groundwater intake was identified as the primary pathway, with carcinogenic and noncarcinogenic risks exceeding those through skin contact. The final weights result demonstrated that the principal risk factors are the intrinsic arsenic load and protective target characteristics of regional groundwater at this site. This study provides a reference for comprehensive assessments of similarly contaminated industrial and smelting sites.
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  • 文章类型: Journal Article
    HemerocallisL.拥有丰富的种质资源,在观赏方面具有重要的价值,可食用,和医药方面。然而,不同品种的品质特征差异很大。选择具有特征香气的优质品种可以增加红花的经济价值。层次分析法(AHP)是比较评价多个特征维度的有效决策方法。通过应用层次分析法,本研究对60个月季花品种的芳香特性进行了分析和评价。采用顶空固相微萃取气相色谱-质谱联用(HS-SPME-GC-MS)技术对花中的挥发性成分进行了鉴定。发现有13种挥发性成分有助于Hemerocallis花的香气,这有助于评估它们在精油中的潜在应用,芳香疗法,和医疗。这些成分包括2-苯基乙醇,香叶醇,芳樟醇,非肛门,decanal,(E)-β-辛烯,α-法尼烯,吲哚,Nerolidol,3-呋喃甲醇,3-carene,苯甲醛和苯甲醇。使用AHP模型可以从大量数据中选择具有较好芳香潜力的品种。这项研究提供了一个全面的了解的香气成分的特点,在春花,为育种提供指导,提高了鲜花的经济价值。
    Hemerocallis L. possesses abundant germplasm resources and holds significant value in terms of ornamental, edible, and medicinal aspects. However, the quality characteristics vary significantly depending on different varieties. Selection of a high-quality variety with a characteristic aroma can increase the economic value of Hemerocallis flowers. The analytic hierarchy process (AHP) is an effective decision-making method for comparing and evaluating multiple characteristic dimensions. By applying AHP, the aromatic character of 60 varieties of Hemerocallis flowers were analyzed and evaluated in the present study. Headspace solid-phase microextraction gas chromatography-mass spectrometry (HS-SPME-GC-MS) was employed to identify volatile components in Hemerocallis flowers. Thirteen volatile components were found to contribute to the aroma of Hemerocallis flowers, which helps in assessing their potential applications in essential oil, aromatherapy, and medical treatment. These components include 2-phenylethanol, geraniol, linalool, nonanal, decanal, (E)-β-ocimene, α-farnesene, indole, nerolidol, 3-furanmethanol, 3-carene, benzaldehyde and benzenemethanol. The varieties with better aromatic potential can be selected from a large amount of data using an AHP model. This study provides a comprehensive understanding of the characteristics of the aroma components in Hemerocallis flowers, offers guidance for breeding, and enhances the economic value of Hemerocallis flowers.
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  • 文章类型: Journal Article
    背景:去年,世界见证了大型语言模型(LLM)的采用。尽管使用LLM开发的产品有可能解决医疗保健中的可及性和效率问题,缺乏开发医疗保健LLM的可用指南,尤其是医学教育。
    目的:本研究的目的是确定并优先考虑为医学教育开发成功的LLM的推动者。我们进一步评估了这些确定的推动者之间的关系。
    方法:首先对现有文献进行叙述性回顾,以确定LLM开发的关键推动者。我们还收集了LLM用户的意见,以使用层次分析法(AHP)确定这些推动者的相对重要性,这是一种多准则决策方法。Further,总体解释结构模型(TISM)用于分析产品开发人员的观点,并确定这些推动者之间的关系和层次结构.最后,应用于分类(MICMAC)方法的基于交叉影响矩阵的乘法用于确定这些推动者的相对驱动和依赖能力。非概率目的抽样方法用于招募焦点小组。
    结果:AHP证明了LLM最重要的推动因素是可信度,优先级权重为0.37,其次是问责制(0.27642)和公平性(0.10572)。相比之下,可用性,优先级权重为0.04,显示出微不足道的重要性。TISM的结果与AHP的结果一致。专家观点和用户偏好评估之间唯一显著的区别是,产品开发人员指出,成本作为潜在的推动者最不重要。MICMAC分析表明,成本对其他促成因素有很大影响。焦点小组的输入被认为是可靠的,稠度比小于0.1(0.084)。
    结论:这项研究首次确定,优先考虑,并分析有效医学教育LLM的推动者之间的关系。根据这项研究的结果,我们开发了一个可理解的规范框架,名为CUC-FATE(成本,可用性,可信度,公平,问责制,透明度,和可解释性),用于评估医学教育中LLM的推动者。这项研究结果对医疗保健专业人员很有用,健康技术专家,医疗技术监管机构,和政策制定者。
    BACKGROUND: The world has witnessed increased adoption of large language models (LLMs) in the last year. Although the products developed using LLMs have the potential to solve accessibility and efficiency problems in health care, there is a lack of available guidelines for developing LLMs for health care, especially for medical education.
    OBJECTIVE: The aim of this study was to identify and prioritize the enablers for developing successful LLMs for medical education. We further evaluated the relationships among these identified enablers.
    METHODS: A narrative review of the extant literature was first performed to identify the key enablers for LLM development. We additionally gathered the opinions of LLM users to determine the relative importance of these enablers using an analytical hierarchy process (AHP), which is a multicriteria decision-making method. Further, total interpretive structural modeling (TISM) was used to analyze the perspectives of product developers and ascertain the relationships and hierarchy among these enablers. Finally, the cross-impact matrix-based multiplication applied to a classification (MICMAC) approach was used to determine the relative driving and dependence powers of these enablers. A nonprobabilistic purposive sampling approach was used for recruitment of focus groups.
    RESULTS: The AHP demonstrated that the most important enabler for LLMs was credibility, with a priority weight of 0.37, followed by accountability (0.27642) and fairness (0.10572). In contrast, usability, with a priority weight of 0.04, showed negligible importance. The results of TISM concurred with the findings of the AHP. The only striking difference between expert perspectives and user preference evaluation was that the product developers indicated that cost has the least importance as a potential enabler. The MICMAC analysis suggested that cost has a strong influence on other enablers. The inputs of the focus group were found to be reliable, with a consistency ratio less than 0.1 (0.084).
    CONCLUSIONS: This study is the first to identify, prioritize, and analyze the relationships of enablers of effective LLMs for medical education. Based on the results of this study, we developed a comprehendible prescriptive framework, named CUC-FATE (Cost, Usability, Credibility, Fairness, Accountability, Transparency, and Explainability), for evaluating the enablers of LLMs in medical education. The study findings are useful for health care professionals, health technology experts, medical technology regulators, and policy makers.
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  • 文章类型: Journal Article
    草原是重要的生态系统,可提供众多生态服务并支持生物多样性保护。草原受到来自人为和自然来源的重大威胁,损害他们维持生物多样性的能力,生态系统服务,和人类福祉。然而,草原在可持续发展目标中经常被忽视。充分了解草地退化如何影响生态系统服务对于可持续管理和草地生态恢复至关重要。印度西部的Kachchh地区拥有独特的草原生态系统,称为Banni草原,曾经成为亚洲最好的草原。然而,不良的人为干预加速了其退化。本研究旨在评估班尼不同土地区域对可持续草地恢复的适宜性。把生态价值作为首要标准。在目前的研究中,使用基于地理信息系统(GIS)的多标准演化(MCE)方法和卫星数据和层次分析法(AHP)评估了草地管理的土地适宜性。土壤样品的地面真实是在旁边进行的。斜坡,降雨,渗透率,LULC,地貌学,土壤质地,土壤有机碳,持水能力,SAR,CEC,pH值,EC,和土壤养分是使用的标准之一。使用成对比较矩阵计算每个标准的权重,并根据现场工作将分数分配给次级标准,专家意见,和文献综述。所提出的方法对于评估土地状况非常有用,并且可以帮助进行最佳的草地开发和保护规划。班尼草原未来有可能发展成为临界区观测站(CZO),而目前的研究,随着进一步的投入,有希望促进其可持续管理的事业。总的来说,这项研究强调了评估土地适宜性对可持续草地管理的重要性,并强调了最大化印度西部及其他地区草地生态价值的潜力。
    Grasslands are crucial ecosystems that provide numerous ecological services and support biodiversity conservation. Grasslands undergo significant threats from both anthropogenic and natural sources, compromising their ability to maintain biodiversity, ecosystem services, and human well-being. However, grasslands are frequently ignored in sustainable development objectives. Adequate knowledge of how grassland degradation affects ecosystem services is essential for sustainable management and grassland ecological restoration. The Kachchh region in western India harbours a unique grassland ecosystem known as the Banni grassland, which once became the finest grassland in Asia. However, undesirable anthropogenic interventions have accelerated its degradation. This research paper aims to assess the suitability of different land areas in Banni for sustainable grassland restoration, considering ecological value as a primary criterion. In the present research, land suitability for grassland management was assessed using a geographical information system (GIS)-based multi criteria evolution (MCE) method with satellite data and the analytic hierarchy process (AHP). The ground truthing of the soil samples was carried out alongside. Slope, rainfall, infiltration rate, LULC, geomorphology, soil texture, soil organic carbon, water holding capacity, SAR, CEC, pH, EC, and soil nutrients were among the criteria used. The weights for each criterion were calculated using a pairwise comparison matrix, and the scores were allocated to sub criteria based on field work, expert opinions, and a literature review. The proposed method can be very useful for evaluating the state of the land and can help with the best possible planning for grassland development and conservation. Banni grassland has the potential to be developed into a critical zone observatory (CZO) in the future, and the present study, with further inputs, holds promise for furthering the cause of its sustainable management. Overall, this study underscores the importance of assessing land suitability for sustainable grassland management and highlights the potential for maximising the ecological value of grasslands in western India and beyond.
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  • 文章类型: Journal Article
    最常见的呼吸道慢性疾病之一是哮喘,占世界患病率的5-16%。在慢性疾病中,预防,诊断,管理和缓解是护理模式的策略;患者自我管理是所谓的治疗教育(TE)的基础,以训练患者的必要技能。当患者是儿童或有特殊需要的人时,TE增长的挑战;在低收入和中等收入国家的公共医疗保健中更是如此。这是人类的问题,这需要软系统思维。在这项研究中,在墨西哥一家公共卫生机构中,采用层次分析法确定影响儿童哮喘保健的因素的感知重要性.软系统方法(SSM)被用来学习疾病的自我管理,以获得活动模型和行动计划。根据AHP,在影响机构内儿童保健的因素中,人力资源和教育被认为是最重要的。两个主要子因素(人力资源培训和TE)的感知重要性约为34%,强调需要制定改善患者和医疗保健提供者教育的策略。在MSS中,丰富的视野,猫,提出了根定义和活动模型,包括应用教学设计方法(ADDIE)开发儿童哮喘学习对象。可取和可行的行动和建议包括更新国家临床实践指南;使用控制措施,例如哮喘控制测试和每日哮喘日记,以记录呼吸能力的每日状态,给药和潜在的触发事件。所提出的模型可以用作以患者和家庭为中心的系统慢性护理模型(CCM)方法的一部分,特别是在那些不适合干预预防的疾病中。
    One of the most common respiratory chronic diseases is asthma, with 5-16 % of world prevalence. In chronic disease, prevention, diagnosis, management, and palliation are the strategies for a care model; the patient-self management is fundamental with the so-called therapeutic education (TE) to train the patient in the necessary skills. The challenge of TE grows when the patient is a child or a person with special needs, even more in public health care in low- and middle-income countries. This is a problematic human situation, that needs soft system thinking. In this research, the analytic hierarchy process was used to determine the perceived importance of the factors that affect children\'s asthma health care in a public health institution in Mexico. The soft systems methodology (SSM) was applied to learn about the disease self-management, in order to obtain activities models and an action plan. According to AHP, human resources and education were percived as the most important among the factors that affect children health care within the institution. The perceived importance of two main subfactors (human resources training and TE) was around 34 %, which emphasizes the need to generate strategies for the improvement of the education of patients and health care providers. In MSS, the rich vision, the CATWOE, the root definition, and an activities model were proposed, including the application of an instructional design methodology (ADDIE) for the development of learning objects of asthma for children. Desirable and feasible actions and recommendations include the update of the national clinical practice guides, the use of control measures such as the Asthma Control Test, and a daily asthma diary to register the daily status of the breathing capacity, the drug administration, and the potential trigger events. The proposed model can be used as part of a systemic patient-and-family centered approach for chronic care model (CCM), particularly in diseases unsuitable for prevention interventions.
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  • 文章类型: Journal Article
    迅速发展的医疗物联网(IoMT)为个性化医疗提供了巨大的机会,然而,它也使患者和医疗保健系统面临各种安全威胁。异构IoMT设备存在挑战,需要全面的风险评估,由于其不同的功能,协议,和漏洞。因此,为了实现无风险IoMT设备的目标,作者使用模糊逻辑和模糊层次分析法(FAHP)的混合方法来评估风险,为开发人员和研究人员提供有效和有用的结果。所提出的方法指定了定性描述符,如出现频率,后果严重性,权重因子,和风险水平。在三个不同的IoMT设备中进行了风险事件的案例研究,以说明所提出的方法。我们对血氧计进行了蓝牙低功耗(BLE)攻击,智能手表,和智能峰值流量计来发现它们的漏洞。使用FAHP方法,我们计算了模糊权重和风险等级,这有助于我们在决策中优先考虑标准和替代方案。智能手表被发现注射攻击的风险等级为8.57,这是极其重要的,需要立即关注。相反,干扰攻击的最低风险等级为1,最高风险等级为9,最低风险等级为1。基于此风险评估,可以实施适当的安全措施来解决潜在威胁的严重性。这些发现将有助于医疗保健行业决策者评估风险因素的相对重要性,通过体重比较帮助做出明智的决定。
    The rapidly expanding Internet of Medical Things (IoMT) landscape fosters enormous opportunities for personalized healthcare, yet it also exposes patients and healthcare systems to diverse security threats. Heterogeneous IoMT devices present challenges that need comprehensive risk assessment due to their varying functionality, protocols, and vulnerabilities. Hence, to achieve the goal of having risk-free IoMT devices, the authors used a hybrid approach using fuzzy logic and the Fuzzy Analytical Hierarchy Process (FAHP) to evaluate risks, providing effective and useful results for developers and researchers. The presented approach specifies qualitative descriptors such as the frequency of occurrence, consequence severity, weight factor, and risk level. A case study with risk events in three different IoMT devices was carried out to illustrate the proposed method. We performed a Bluetooth Low Energy (BLE) attack on an oximeter, smartwatch, and smart peak flow meter to discover their vulnerabilities. Using the FAHP method, we calculated fuzzy weights and risk levels, which helped us to prioritize criteria and alternatives in decision-making. Smartwatches were found to have a risk level of 8.57 for injection attacks, which is of extreme importance and needs immediate attention. Conversely, jamming attacks registered the lowest risk level of 1, with 9 being the maximum risk level and 1 the minimum. Based on this risk assessment, appropriate security measures can be implemented to address the severity of potential threats. The findings will assist healthcare industry decision-makers in evaluating the relative importance of risk factors, aiding informed decisions through weight comparison.
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  • 文章类型: Journal Article
    机械回收是塑料废物(PW)回收必不可少的工具,在印度PW回收行业中份额最高。向塑料循环经济(CEoP)的过渡需要对机械回收过程进行系统的研究。然而,影响PW机械回收的多个参数的评估是三重底线机械回收发展的复杂决策问题。通过采用多准则决策方法来检查本研究中相互关联的因素的复杂性,从而对各种机械回收方案进行了系统的研究。结合灰色关联分析(GRA)的层次分析法(AHP)用于评估直接影响以质量为导向的机械回收的标准。数据是通过使用框架问卷进行半结构化访谈来收集的,该问卷涉及利益相关者与PW的机械回收商的参与。第一级等级包括经济,技术,资源消耗和环境标准。这些标准被进一步分类为各种重要指标,如回收物的质量,可回收性,回收过程中的水和能源消耗。综合灰色关联分析结果表明,包括回收物质量在内的技术参数,资源效率,PW处理速率和可回收性对机械回收有重要影响。基于AHP-GRA,场景MR6,即从回收的PET薄片制造PET带,在各种场景中排名最优的机械过程。MR6之后是绑带和胶片,排名第二和第三。对于聚合物共混物再循环,观察到最低等级。这些具有更高等级的工艺产生了具有更好效率和可回收性的高质量回收物。此外,这些过程在制造过程中消耗了最佳资源。这些过程也表现出更低的维护成本,高生产率,低化学品消耗和废物产生以及实施的污染控制实践。
    Mechanical recycling is an indispensable tool for plastic waste (PW) recycling and has the highest share in the PW recycling sector in India. The transition to the circular economy of plastics (CEoP) needs a systemic perspective on the mechanical recycling processes. Nevertheless, the assessment of multiple parameters influencing the mechanical recycling of PW is a complex decision-making problem for the development of triple-bottom-line mechanical recycling. A systemic perspective of various mechanical recycling scenarios was performed by employing a multi-criteria decision-making approach to examine the complexity of interlinked factors in the present investigation. Analytical hierarchy process (AHP) integrated with grey relational analysis (GRA) was used to evaluate the criteria that directly influence quality-oriented mechanical recycling. Data were collected by conducting semi-structured interviews using a framed questionnaire in stakeholder engagement with mechanical recyclers of PW. The first level hierarchy included economy, technical, resource consumption and environmental criteria. These criteria were further categorized into various significant indices such as quality of recyclate, recyclability, water and energy consumption during recycling. The results of the integrated grey relational analysis indicated that the technical parameters including quality of recyclate, resource efficiency, PW processing rate and recyclability have a significant influence on mechanical recycling. Based on AHP-GRA, scenario MR6, i.e. manufacturing of PET strap from recycled PET flakes, was ranked the optimal mechanical process amongst the various scenarios. MR6 was followed by Straps and Films at the second and third rank. The lowest ranking was observed for polymer blend recycling. These processes with higher ranks produced good quality recyclate with better efficiency and recyclability. Moreover, these processes consumed optimal resources during manufacturing. These processes also exhibited less maintenance cost, high production rate, low chemical consumption and waste generation as well as implemented pollution control practices.
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  • 文章类型: Journal Article
    在所有其他宝贵的自然资源中,地下水对全球经济增长和粮食安全至关重要。这项研究旨在划定埃塞俄比亚主要裂谷Gidabo流域的地下水潜力区(GWPZ)。由于人口迅速激增,流域对各种应用的地下水供应需求最近有所增加。综合地理信息系统,遥感,并采用了层次分析法(AHP)。八个地下水调节因素,包括降雨,高程,排水密度,土壤类型,线条密度,斜坡,岩性,和土地利用/土地覆盖,已在分析中采用。要为每个因素分配合适的权重,采用了AHP,因为每个元素对地下水发生的贡献不同。然后在ArcGIS环境中使用加权叠加分析(WOA)技术来集成所有主题层并生成GWPZ图。分水岭中划定的GWPZ分为五类。可怜的GWPZ覆盖了18.7%,低GWPZ覆盖了33.8%,中等GWPZ占23.4%,高GWPZ覆盖了18.1%,非常高的GWPZ覆盖了该地区的5.8%。井和弹簧数据用于验证模型,并应用ROC(受试者工作特性)曲线法。结果表明,准确率为76.8%。这项研究的结果对于Gidabo流域的地下水资源规划和管理具有重要价值。
    Among all other valuable natural resources, groundwater is crucial for global economic growth and food security. This study aimed to delineate groundwater potential zones (GWPZ) in the Gidabo watershed of the Main Ethiopian Rift. The demand for groundwater supplies for various applications has risen recently in the watershed due to rapid population upsurge. An integrated Geographical Information System, Remote Sensing, and Analytical Hierarchy Process (AHP) has been utilized. Eight groundwater regulating factors, including rainfall, elevation, drainage density, soil types, lineament density, slope, lithology, and land use/land cover, have been taken in the analysis. To assign suitable weights to each factor, AHP was employed, as each element contributes differently to groundwater occurrence. The weighted overlay analysis (WOA) technique was then used in the ArcGIS environment to integrate all thematic layers and generate a GWPZ map. The delineated GWPZ in the watershed was classified into five categories. The poor GWPZ covered 18.7 %, the low GWPZ covered 33.8 %, the moderate GWPZ covered 23.4 %, the high GWPZ covered 18.1 %, and the very high GWPZ covered 5.8 % of the area. Well and spring data were used to validate the model, and the ROC (Receiver Operating Characteristic) curve method was applied. The results showed good accuracy of 76.8 %. The result of this research can be valuable for planning and managing groundwater resources in the Gidabo watershed.
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