Feasibility study of renewable energy sources for developing the hydrogen economy in Pakistan

Hydrogen energy can play a pivotal part in enhancing energy security and decreasing hazardous emissions in Pakistan. However, hydrogen energy can be sustainable and clean only if it is produced from renewable energy sources (RES). Therefore, this study conducts feasibility of six RES for the generation of hydrogen in Pakistan. RES evaluated in this study include wind, solar, biomass, municipal solid waste (MSW), geothermal, and micro-hydro. RES have been evaluated using Fuzzy Delphi, fuzzy analytical hierarchy process (FAHP), and environmental data envelopment analysis (DEA). Fuzzy Delphi finalizes criteria and sub-criteria. FAHP obtains relative weights of criteria considered for choosing the optimal RES. Environmental DEA measures relative efficiency of each RES using criteria weights as outputs, and RES-based electricity generation cost as input. The results revealed wind as the most efficient source of hydrogen production in Pakistan. Micro-hydro and Solar energy can also be used for hydrogen production. Biomass, MSW, and geothermal achieved less efficiency scores and therefore are not suggested at present.     

Customization Product Design Based on User‘s Emotion and Needs

The paper presents a design method that ensures the ingenuity of the product form as well as the whole and exact expression of user‘s needs. The key idea is to establish an automatic design system which can transform the users language needs into the product features in real-time. A rifle was taken as a research instance and soldiers were chosen as evaluation customers. The theory of fuzzy set and semantic difference are adopted to evaluate the relationship between user‘s needs and product features as well as their alternatives. FAHP (fuzzy analytic hierarchy process) is utilized to judge the users satisfactory forms. This method can also be applied to other product form designs.     

建筑业企业转型升级模式研究

随着经济发展进入新常态,建筑业也步入增速换挡、结构调整、动力转换的攻坚期。新常态下,伴随建筑业变革而来的工程总承包、全生命周期管理等模式,为行业转型升级注入强大活力。对建筑业企业转型升级的典型模式及影响因素进行归纳,从资源、技术创新、资本积累、战略管理和文化品牌5 个层面建立了企业转型升级指标体系并运用模糊层次分析法（FAHP）为指标赋权。引入灰色关联-TOPSIS 模型选择适合于企业的转型升级模式。并运用实例分析验证了模型的适用性,以期为企业的战略规划制定和高质量发展提供指导。     

归来庄金矿人工境界矿柱法风险评价

结合归来庄金矿的工程实例,构建了露天转地下开采人工境界矿柱法关键技术层次分析递阶结构模型和判断矩阵,进行一致性检验并计算最大特征值λmax,采用五级风险影响评价等级建立人工境界矿柱的模糊评判矩阵,并根据层次分析法的权重进行模糊合成和综合评判,得出总指标露天转地下开采人工境界矿柱法关键技术的风险属于较低风险。     

Comparative analysis of MCDM methods for pipe material selection in sugar industry

The material plays an important role in an engineering design process. The suitable material selection for a particular product is one of the vital tasks for the designers. In order to fulfil the product’s end requirements, designers need to analyze the performance of various materials and spot suitable materials with precise functionalities. Due to the presence of large number of materials with diverse properties, the material selection process is complicated and time consuming task. There is a necessity of systematic and efficient approach towards material selection to choose best alternative material for a product. The aim of this paper is to describe the application of four Multi Criteria Decision Making methods for solving pipes material selection problem in sugar industry. FAHP-TOPSIS, FAHP-VIKOR, FAHP-ELECTRE, FAHP-PROMTHEE are the four methods used to choose the best alternative among the various materials. The ranking performance of various MCDM methods is also compared with each other and exploring the effectiveness and flexibility of VIKOR method. Five stainless steel grades such as J4, JSLAUS, J204Cu, 409 M, 304 and seven evaluation criteria such as yield strength, ultimate tensile strength, percentage of elongation, hardness, cost, corrosion rate and wear rate are focussed in this study to choose the suitable material.     

基于模糊层次分析法的通信业务重要度评估

电力通信已经成为电力系统不可缺少的一个重要部分,优质可靠的通信手段是电网安全稳定发电和供电的基础。电力通信业务能否满足要求,是否可靠,直接影响到电力系统的安全生产和稳定运行。通过对某地区电力通信业务性能分析,建立层次指标体系,运用LLSM法对单值指标进行三角模糊扩展,对扩展后的指标进行模糊运算,得到综合模糊重要度指标权重。最后通过指标权重解模糊数,对17种电力通信业务排序评价。     

一种电力通信网可靠性综合评价方法

为了实现对电力企业的智能化管理,进行电力通信网的可靠性评价算法的研究非常必要。文章对19个电力企业进行了评价,其中运用模糊层次分析法和变异系数法得到组合权重,加权平均后的评价值通过限位系数法进行解模糊。该方法兼顾了定性与定量,客观性与主观性,提高了可信度,解决了电力通信网可靠性评价的不确定性。实例证明,该方法可行,所得结果基本符合实际。     

大型会展中心安全分级评价研究与实践

以“如何有效评定大型会展中心综合安全性能”为研究目标。在解析建筑安全分级评价的难点、指标体系和技术构成的基础之上,探讨了以建筑学、安全科学为基础,充分借鉴数学、运筹学、统计学和现代系统论的理论和方法,试图探索构建一个具有学科综合化特征的评价方法体系。并在此基础之上,具体运用贯穿了“质——量”结合思想的模糊层次综合评价法,针对“重庆市国际会议展览中心”进行了基于设计理论研究的安全分级评价实践。目的是为增进设计实践与安全意识的结合,加强建筑安全管理控制,以及促进城市公共安全体系的完善等方面。在实践中,它还是促成建筑环境安全价值实现的有效工具。     

模糊层次分析法和模糊理论在危险房屋鉴定中的应用

提出危险房屋鉴定的两级模糊综合评判模型,采用加权平均型数学模型,运用模糊层次分析法根据各因素相对重要性确定权重,对房屋组成部分危险性等级隶属函数的某些问题进行了讨论,用非对称贴近度法划分房屋危险性等级,并结合工程实例在鉴定理论方面进行了有益的探讨,对今后的鉴定工作有一定的借鉴意义．     

雷达装备采购效能评估方法的研究

针对AHP法中决策者的主观判断可能产生一定误差，将基于熵权的FAHP法应用于采购效能评估中．首先给出了采购效能的定义，建立了雷达装备采购效能评价模型．其次给出了雷达装备采购效能评估步骤．最后分别用AHP法和基于熵权的FAHP法对实例进行了计算．结果表明，基于熵权的FAHP法比AHP法更科学、更合理．