Research and application of sidewall stability predic-tion method based on analytic hierarchy process and fuzzy integrative evaluation method

As a difficult problem, sidewall instability has been beset drilling workers all the time. Not only does it cause huge economic losses, but also it determines the success or failure of drilling engineering. Due to complex relationship between various factors which influence sidewall stability, it hasn’t been found a widely applied method to predicate sidewall stability so far. Therefore, in order to formulate corresponding measures to ensure successful drilling, searching for a kind of better method to forecast sidewall stability before drilling becomes an imperative and significant topic for drilling engineering. On the basis of traditional sidewall stability analytical method, we have put forward the Fuzzy Comprehensive Evaluation Method to forecast sidewall stability regulation using physico-chemical performance parameters of the clay mineral. This method has been improved by introducing the Analytic Hierarchy Process (AHP) and the Maximum Subjection Principle in the application process. After introducing Analytic Hierarchy Process to identify weight, and Maximum Subjection Principle to obtain evaluation results, it has reduced the influence of human factors and enhanced the accuracy of the fuzzy evaluation results. The application in Hailaer Area indicates that this method can predict sidewall stability of gas-oil well with high credibility and strong practicability.

Assessment of Effects of Green Construction by Analytic Hierarchy Process and Fuzzy Synthetic Judgment Method

The index system, code system, and weights of indexes are established to assess the effects of green construction. The index system consists of index level, factor level and sub-factor level. The analytic hierarchy process is used to determine the weights of indexes, and the consistency test indicate that the weight assignment is reasonable. Using fuzzy synthetic judgment method, the assessment model is built, which includes factor set, weight set and conclusion set. An example is given to demonstrate the assessment procedures.

Delphi and Analytic hierarchy process for the construction of a risk assessment index system for post-stroke shoulder-hand syndrome

Background:Shoulder-hand syndrome(SHS)is one of the common complications after stroke,which is difficult to cure once it occurs.Early risk identification is an effective measure to prevent and treat SHS,but there is no effective tool to assess the risk assessment of SHS.Objective:To develop a validated tool to assess the risk of SHS occurrence after stroke.Methods:This was an observational study with a 3-step process:(1)Literature review to establish initial indicators;(2)Application of a modified Delphi method for two rounds of correspondence,with final indicators obtained by modifying each round based on expert opinion;(3)Application of hierarchical analysis to determine the weights of each indicator.Results:The initial literature review constructed4 primary indicators and 24 secondary indicators;after the first round of Delphi,a total of 10 secondary indicators were deleted and 6 secondary indicators were added,and the final indicators included 3 primary indicators and 15 secondary indicators,and in the second round,consensus was reached;by AHP analysis,the highest weight was given to existing risk factors(0.5584),followed by relevant medical history(0.3196);lastly,demographic factors(0.1220),and the scores of other secondary indicators met the requirements.Conclusion:This study establishes and constructs a post-stroke SHS risk assessment tool,which provides a basis for early identification of SHS and early intervention.Meanwhile,this study provides a methodological reference for the development of other indicatorssets.

Alunite processing method selection using the AHP and TOPSIS approaches under fuzzy environment

Alunite is the most important non bauxite resource for alumina. Various methods have been proposed and patented for processing alunite, but none has been performed at industrial scale and no technical,operational and economic data is available to evaluate methods. In addition, selecting the right approach for alunite beneficiation, requires introducing a wide range of criteria and careful analysis of alternatives.In this research, after studying the existing processes, 13 methods were considered and evaluated by 14 technical, economic and environmental analyzing criteria. Due to multiplicity of processing methods and attributes, in this paper, Multi Attribute Decision Making methods were employed to examine the appropriateness of choices. The Delphi Analytical Hierarchy Process(DAHP) was used for weighting selection criteria and Fuzzy TOPSIS approach was used to determine the most profitable candidates. Among 13 studied methods, Spanish, Svoronos and Hazan methods were respectively recognized to be the best choices.

Fuzzy Decision of Ground Improvement Method

With the rapid development of expressway in China, the ground improvement is becoming more and more important. The decision of the ground improvement method often depends on the experience of an engineer. This paper sets up a module of multi-level fuzzy decision of the ground improvement method in the expressway construction which is mainly to set up multi-level structure module, to get value of the affected factors at rule level and index level, to set up the character index matrix of project level and to have a total evaluation on the projects. Combined with the project of ground improvement on the Second Cincture Road in Wuhan, a case study is carried out with satisfactory results.

Sustainable food waste management using modified fuzzy improved analytic hierarchy process:a study of Malaysia

Food waste generation is a pressing issue that requires urgent attention and concerted efforts worldwide.The staggering amount of food wasted each year not only wastes valuable resources but also exacerbates environmental,economic,and social challenges.Food Waste Management(FWM)consists of a complex array of criteria and sub-criteria,and treatments which seems interdependent.There is a need to evaluate the FWM with the help of important criteria and sub-criteria and treatments to address this challenge.In this study,we identified four important criteria,21 sub-criteria,and four alternatives of FWM for the case of Malaysia using the integrated approach of literature review and expert opinions.Further,we employed the approach of Modified Fuzzy Improved Analytical Hierarchy Process(IAHP)to corroborate the interrelationships among the identified criteria and sub-criteria,and their associated treatments.This study undertakes linear normalization methods to transform data into comparable numerical values and the Geometric Mean method to handle uncertainty in human judgments.Moreover,the Centroid method is employed to convert fuzzy weights into crisp sets for ease of interpretation.The results indicate that environmental is the most essential criterion,followed by social,economic,and technical.In addition,air and water pollution is identified as the most critical sub-criteria.Black Soldier Fly is discovered as the most sustainable FWM treatment,since it performs the best while meeting all the criteria and sub-criteria assessed.Sensitivity analysis demonstrates that the outputs from the proposed method are robust and reliable.The finding suggests a proper and robust approach to help decision-makers select suitable FWM treatments to tackle various criteria and alternatives especially when handling inconsistent and uncertain judgments during evaluation.

A method for determining the layout of a yaw system based on the Delphi method and the analytic hierarchy process

Wind power technology has been widely used due to its characteristics of environmental protection,sustainability and low cost.The yaw system plays a vital role in improving the energy capture efficiency of a wind turbine.However,the method of layout determination is lacking in the yaw system.To solve this problem,a method that combines the Delphi method and the analytic hierarchy process was proposed in this study.Twelve evaluation indexes,including transmission efficiency,ratio range,operating temperature range and others,were identified by screening 18 technical indicators using the Delphi method.Subsequently,the evaluation system of the yaw system was established.Then,six configuration schemes were selected.Experts’scores of schemes were collected according to the evaluation system and the score matrix of evaluation indexes was obtained.The hierarchical model of the evaluation indexes of the yaw system was established and the comprehensive weight was obtained by using the analytic hierarchy process.After calculating the comprehensive evaluation score,the comprehensive evaluation result was obtained.The 2Z-X(A)negative mechanism,which achieved the highest score of 0.9227,is the optimal scheme.A new method and specific process are provided for designers.The research gap in the scheme selection method for yaw systems is filled.

Application of Choquet Integral-Importance-Performance Analysis and TOPSIS Methods in Approaching the Preference Factors of Calligraphy and Seal Engraving Imagery

Classical Chinese characters,presented through calligraphy,seal engraving,or painting,can exhibit different aesthetics and essences of Chinese characters,making them the most important asset of the Chinese people.Calligraphy and seal engraving,as two closely related systems in traditional Chinese art,have developed through the ages.Due to changes in lifestyle and advancements in modern technology,their original functions of daily writing and verification have gradually diminished.Instead,they have increasingly played a significant role in commercial art.This study utilizes the Evaluation Grid Method(EGM)and the Analytic Hierarchy Process(AHP)to research the key preference factors in the application of calligraphy and seal engraving imagery.Different from the traditional 5-point equal interval semantic questionnaire,this study employs a non-equal interval semantic questionnaire with a golden ratio scale,distinguishing the importance ratio of adjacent semantic meanings and highlighting the weighted emphasis on visual aesthetics.Additionally,the study uses Importance-Performance Analysis(IPA)and Technique for Order Preference by Similarity to Ideal Solution(TOPSIS)to obtain the key preference sequence of calligraphy and seal engraving culture.Plus,the Choquet integral comprehensive evaluation is used as a reference for IPA comparison.It is hoped that this study can provide cultural imagery references and research methods,injecting further creativity into industrial design.

双碳视域下森林生态系统环境脆弱性评价方法研究

针对双碳视域下森林生态系统中影响变量较多,导致的脆弱性评价结果不准确的问题,研究双碳视域下森林生态系统环境脆弱性评价方法。引入层次分析法进行指标一致性校验,构建通过森林生态系统环境脆弱性评价指标体系,结合集成分析法,计算同一时间点或区域点下脆弱性因子的差异性、对立性以及同一性关系,构建脆弱性的五元联评价函数、七元联评价函数,实现环境脆弱性评价。实验数据证明,所提方法对森林环境中不同变量的脆弱性变化描述准确,评价结果精度高,实际应用性能较强。

Comprehensive evaluation method for superstructures of prestressed concrete girder bridges

A multi-level evaluation model for the superstructure of a damaged prestressed concrete girder or beam bridge is established, and the evaluation indices of the model as well as the rating standards are defined. A normal relative function about the evaluation indices of each element is developed to calculate the relative degree, and for each element there are no sub-level elements. When evaluating the elements in the sub-item level or the index level of the model, the weights of elements pertain to one adopted element, taking into account their degrees of deterioration. Since the relative degrees and structure evaluation scales on the damage conditions are applied to characterize the superstructure of damaged prestressed concrete girder bridges, this method can evaluate the prestressed structure in detail, and the evaluation results agree with the Code for Maintenance of Highway Bridges and Culvers （JTG Hll--2004 ）. Finally, a bridge in Jilin province is taken as an example, using the method developed to evaluate its damage conditions, which gives an effective way for bridge engineering.

Application of combination weighting method in contract risk's evaluation of third party logistics

First,the analytical hierarchy process(AHP),which stands for the subjective weighting method,and the entropy method,which stands for the objective weighting method,are chosen to calculate the index weights of the contract risks of third party logistics(TPL),respectively.Then,they can determine the combination weights using the combination weighting method.Second,using the combination weights,the contract risks of TPL are evaluated through the fuzzy comprehensive evaluation method.According to the combination weights,the most important risk factor of the contract risks of TPL is choosing sub-contractors.The results are basically consistent with the facts and show that the weights determined by the combination weighting method can avoid the man-made deviations of the subjective weighting method on the one hand,and prevent results opposite to the reality brought about by the objective weighting method on the other hand.Meanwhile,the results of the fuzzy comprehensive evaluation are that the contract risks of TPL are at a high risk level.Roughly this matches real situations,and it indicates that the combination weighting method can generate the comprehensive assessment more scientifically and more reasonably as well.

Box-Behnken响应面法结合层次分析法优化萸仙茅炮制工艺

目的优选萸仙茅炮制工艺。方法在单因素试验基础上,以料液比、炒制时间和炒制温度为影响因素,以仙茅苷、苔黑酚葡萄糖苷、苔黑酚龙胆二糖苷含量及外观性状的综合评分为评价指标,利用Box-Behnken响应面法结合层次分析法优化萸仙茅最佳炮制工艺,并进行工艺验证。结果萸仙茅最佳炮制工艺为:取生仙茅饮片,加入等量吴茱萸汁拌匀,置密闭容器内,闷润至药汁被完全吸尽,于130℃炒制6min,取出,60℃干燥。每100kg仙茅用吴茱萸10kg。吴茱萸汁制法:取吴茱萸10kg,加12倍量水浸泡60min,煎煮50min,提取3次,合并滤液,浓缩至100kg。结论本研究优化所得萸仙茅的炮制工艺可行、稳定。

孟河医派大黄煨制工艺优化及炮制后化学成分含量变化研究

目的优化孟河医派大黄煨制工艺,并比较炮制前后的化学成分含量差异。方法以外观性状评分以及没食子酸、5-羟甲基糠醛、番泻苷A+番泻苷B、结合蒽醌、游离蒽醌含量为评价指标,采用层次分析(AHP)-熵权法计算评价指标的综合评分;再以文火温度、煨制时间、纸张层数、纸裹时间为考察因素,采用正交实验优选大黄煨制工艺,并进行验证。比较按最优工艺制备的煨大黄和生大黄中5种蒽醌类成分(芦荟大黄素、大黄酸、大黄素、大黄酚和大黄素甲醚)、5种蒽醌苷类成分(芦荟大黄素苷、大黄酸苷、大黄素苷、大黄酚苷和大黄素甲醚苷)、2种番泻苷类成分(番泻苷A、番泻苷B)以及没食子酸和5-羟甲基糠醛的含量变化。结果大黄的最优煨制工艺为:每80 g大黄用1层湿纸包裹0.5 h,大火煨制20 min后转文火140℃煨制,总煨制时间2.5 h;3次验证实验的综合评分均值为94.10(RSD<1.0%)。大黄煨制后,5种蒽醌苷类成分和2种番泻苷类成分的含量均大幅降低,而5种游离蒽醌类成分和没食子酸的含量均不同程度升高,且有新成分5-羟甲基糠醛生成。结论本研究成功优化了大黄的煨制工艺;大黄煨制前后化学成分含量差异较大,其成分变化可阐释煨制对生大黄缓性增效的作用。

中国健康生活方式综合评价指数的构建研究

目的:建立中国健康生活方式综合评价指数(CHLI),以用于综合评估中国人群的生活方式健康水平。方法:通过文献研究初步筛选相关指标,利用德尔菲专家咨询法确定入选指标,利用层次分析法计算各指标权重,通过加权求和最终形成CHLI。结果:第1、2轮专家咨询的积极程度分别为92.9%和93.8%,权威系数分别为0.846±0.027和0.861±0.030,结果具有可靠性;两轮一级指标和二级指标重要性评分意见的肯德尔协调系数分别为0.482和0.451,0.535和0.557(P均<0.001),专家意见的协调性较好。构建CHLI的指标体系包括5个一级指标和28个二级指标,一级指标按权重大小依次为膳食(0.239)、精神心理(0.220)、身体活动(0.198)、尼古丁暴露(0.175)和睡眠(0.167);二级指标的组合权重范围在0.009~0.198;层次分析判断矩阵的一致性比例均小于0.1,结果可信度较高。结论:本研究构建的CHLI可以用于综合评估中国人群的生活方式健康水平。

Study on the evaluation index system and evaluation method for self-elevating drilling unit design

In the process of designing self-elevating drilling unit, it is important, yet complicated, to use comparison and filtering to select the optimum scheme from the feasible ones. In this research, an index system and methodology for the evaluation of self-elevating drilling unit was proposed. Based on this, a multi-objective combinatorial optimization model was developed, using the improved grey relation Analysis （GRA）, in which the analytic hierarchy process （AHP） was used to determine the weights of the evaluating indices. It considered the connections within the indices, reflecting the objective nature of things, and also considered the subjective interests of ship owners and the needs of designers. The evaluation index system and evaluation method can be used in the selection of an optimal scheme and advanced assessment. A case study shows the index system and evaluation method are scientific, reasonable, and easy to put into practice. At the same time, such an evaluation index system and evaluation method will be helpful for making decisions for other mobile platforms.

基于IAHP的山岭隧道内已建设施适宜性评价方法

准确评估山岭隧道内已建设施适宜性是利旧原有隧道敷设新管道的核心。针对目前国内缺乏山岭隧道内已建设施适宜性评价方法的问题,将改进层次分析法(IAHP)引入评价过程中,综合考虑利旧前、利旧后2个方面的因素,构建了山岭隧道内已建设施适宜性评价指标体系;针对九分位标度法和三分位标度法的不足,采用指数标度法确定各指标权重,并结合各指标定量或定性评价方法,建立了山岭隧道内已建设施适宜性评价方法,并将该方法运用到实际工程山岭隧道利旧评价中。研究结果表明:评价结果与实际工程情况的结论一致,验证了评价模型的可行性。

未来社区健康场景服务质量评价指标体系构建研究

背景在国家推动“以治病为中心”向“以健康为中心”理念转变的背景下,浙江省率先打造面向全人群和全生命周期的未来社区健康场景,为基层卫生健康综合改革提供了“浙江样板”,构建一套科学有效的未来社区健康场景服务质量评价指标体系具有重要的理论意义和实践价值。目的构建浙江省未来社区健康场景服务质量评价指标体系,为提升社区健康服务能力和质量,推动人群健康目标实现提供参考。方法基于SERVQUAL理论模型,通过政策分析、文献研究和实地调研建立初始指标池;2023年10—12月,采用两轮德尔菲专家咨询法确定指标体系,并运用层次分析法确定各指标的权重和组合权重。结果两轮专家咨询均有17位专家参与,其中高级职称共12名(70.6%);工作年限≥10年15名(88.2%);未来社区的管理人员和医务人员共5名(29.4%)。两轮咨询专家积极性均为1.0,权威系数分别为0.862和0.842,协调程度逐轮提高,最终构建的指标体系包含5个一级指标、13个二级指标、36个三级指标。一级指标中,有形性、可靠性、保证性、响应性、移情性的权重分别为0.168、0.180、0.240、0.178、0.232;二级指标中,场地设施、数字化设备、服务提供、健康监测、服务效率、服务可及性、危机预防和应急救援能力、专业技能、活动组织、智能平台维护、服务态度和情感支持、服务效果、个性化服务的权重分别为0.399、0.601、0.672、0.328、0.487、0.171、0.342、0.410、0.416、0.174、0.284、0.323、0.393。结论本研究构建的浙江省未来社区健康场景服务质量评价指标体系科学可靠,具有较强的系统性、创新性、可操作性和应用价值,是开展未来社区健康场景评价的有效工具,希望能够为政府制定改进策略和相关政策提供参考。

全域旅游视角下县域旅游资源等级评价——以安陆市为例

针对全域旅游时代旅游资源的重新认定和等级评价问题,对全域旅游时代的旅游资源进行了再认识,应用层次分析法构建了全域旅游视角下县域旅游资源等级评价模型,对安陆市各旅游资源点进行了认定及等级评价。评价结果显示,全市有五级旅游资源1处、四级旅游资源6处、三级旅游资源12处、二级旅游资源18处、一级旅游资源29处、未评级旅游资源23处,等级结构总体上呈“金字塔形”。针对该等级评价结果,提出了安陆市旅游资源开发的建议。

内蒙古大兴安岭重点国有林区林地资源生态经济价值评估

森林自然资源的价值评估对于天然保护林工程的实施以及支持中国达到碳达峰和碳中和的发展计划具有重要意义。然而,鲜有文献同时考虑国有森林资源中林地资源的经济价值和生态价值。基于此本文从经济—生态两个角度出发,采用基准价格修正法、AHP层次分析法、生态价值补偿法对内蒙古大兴安岭重点国有林区的林地资源价值进行了全面评估。本文研究结论有助于明确我国国有林地资源的经济价值创造能力,同时也能够明确其在我国绿色生态改革进程中蕴含的巨大生态价值推动力,为合理管控森林资源,防止国有资源流失,并促进我国低碳减排事业的进一步发展提供了科学依据。

A personalized trustworthy service selection method

A personalized trustworthy service selection method is proposed to fully express the features of trust, emphasize the importance of user preference and improve the trustworthiness of service selection. The trustworthiness of web service is defined as customized multi-dimensional trust metrics and the user preference is embodied in the weight of each trust metric. A service selection method combining AHP （analytic hierarchy process） and PROMETHEE （preference ranking organization method for enrichment evaluations） is proposed. AHP is used to determine the weights of trust metrics according to users＇ preferences. Hierarchy and pairwise comparison matrices are constructed. The weights of trust metrics are derived from the highest eigenvalue and eigenvector of the matrix. to obtain the final rank of candidate services. The preference functions are defined according to the inherent characteristics of the trust metrics and net outranking flows are calculated. Experimental results show that the proposed method can effectively express users＇ personalized preferences for trust metrics, and the trustworthiness of service ranking and selection is efficiently improved.