Decision support approach based on multiple objectives and resources for assessing the relocation plan of dangerous hillside aggregations

Juan, Yi‐Kai; Castro, Daniel Coelho de; Roper, Kathy O.

doi:10.1016/j.ejor.2009.05.011

Cited by 11 publications

(10 citation statements)

References 14 publications

(14 reference statements)

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“…The weight of the overall hierarchy can be further calculated and tested for consistency after acquiring the relative weight between elements. The current study is based on previous studies [13,27,28] that used the Scenic Beauty Assessment (SBA) criteria to evaluate check dams with expert questionnaires, and the hierarchy of the evaluated factors is depicted in Figure 1. Implementation of the expert questionnaire is divided into Phase 1, for clarifying the importance of factors with the Delphi Method used to collect the opinions for the reference in the next step; and Phase 2, for evaluating the relative importance of the assessment items in order to determine the hierarchical matrix in AHP.…”

Section: Analytic Hierarchy Processmentioning

confidence: 99%

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Blending the Analytic Hierarchy Process and Fuzzy Logical Systems in Scenic Beauty Assessment of Check Dams in Streams

Peng

Tang

2015

Water

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With Taiwan's steep terrain and fracture geology, natural disasters are likely to occur after heavy rainfall. To reduce the effects of upstream sediment on human surroundings, check dams are an essential transverse structure for streams in watersheds. However, there is likely to be a detrimental visual impact on the landscape without consideration of the integration of dams with the environment. Based on previous studies of landscape assessment, this paper considers the factors of texture, color, and form, often used as part of expert paradigms, as the major aesthetic aspects of check dams. These factors are used to construct an expert questionnaire using the Delphi Method and Analytic Hierarchy Process (AHP). The preliminary criteria and weights for Scenic Beauty Assessment of check dams are determined based on the results of AHP. A Fuzzy Logical System is further applied to solve the linguistic fuzziness of landscape assessment so as to establish a complete expert scenic beauty assessment model. Five cases are further tested for comparison with 224 public samples with Scenic Beauty Estimation (SBE). Results demonstrate that the model presents the validity of expert paradigm and the reliability of the psychophysical paradigm. These results can provide a reference for engineering designers seeking to integrate check dams with the natural landscape. The results indicate that the present method can efficiently assess the scenic beauty of check dams as established by a scientific method.

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Section: Analytic Hierarchy Processmentioning

confidence: 99%

“…Based on previous studies [27,28,33,34] and the results of our Expert Questionnaire Survey, the Scenic Beauty Assessment criteria for check dams and the fuzzy logic rules were determined. In addition, the Fuzzy Logical Toolbox [35] in MatLAB was used to establish a Fuzzy Logical System for Scenic Beauty Assessment (see Figure 2).…”

Section: Fuzzy Logical Systemmentioning

confidence: 99%

Blending the Analytic Hierarchy Process and Fuzzy Logical Systems in Scenic Beauty Assessment of Check Dams in Streams

Peng

Tang

2015

Water

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“…The Fuzzy Logic Toolbox in MatLAB was applied to establish the fuzzy expert system for hazard rating of debris flow evacuation sites in this study (Figure 3) [31]. Environmental sensitivities and potential debris flow disasters were used as input parameters, with the output parameter being a hazard rating in which environmental risks (0-20) were divided into five grades-very low (VL), low (L), medium (M), high (H), and very high (VH)-potential debris flow was divided into four grades (0-3)-NA, Low, Medium, and High-and hazard rating was divided into four grades (0-100)-Safe, Medium, Unsafe, and Dangerous (Figure 4).…”

Section: Fuzzy Logic Systemmentioning

confidence: 99%

Hazard Ratings of Debris Flow Evacuation Sites in Hillside Communities of Ershui Township, Changhua County, Taiwan

Peng

2016

Water

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Global warming in recent years has resulted in climate change. To cope with future climate change and natural environment changes, much of our planning and thinking needs to be adjusted. To this end, safety and rapidness of evacuation have become primary research goals. In this study, geographic information and fuzzy expert systems are applied to debris flow evacuation sites in Ershui Township, Changhua County, for evaluating their hazard ratings. After a geographic information system is used to overlay the environmental sensitivity, FLO-2D is applied to simulate debris flow situations, and the results are utilized to establish a fuzzy expert system that successfully evaluates the hazard ratings of such sites in hillside areas. For future applications, another evaluation reference based on original evacuation sites and routes or evacuation mechanisms and disaster prevention models is proposed as a source of essential assistance to relevant sectors.

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“…The Delphi method has proved to have some functional advantages over other consensus-building methods, such as brainstorming, dialectical inquiry and nominal group [14,22,24,25,35]. The moderator in these group decision-making techniques conducts the group communication and consensus processes through several rounds.…”

Section: Introductionmentioning

confidence: 99%

“…Since its introduction in the 1960s, it has been used to attain convergence of expert opinion in a variety of fields of knowledge such as program planning, needs assessment, policy determination and resource utilization [11,19,22,35].…”

Section: Introductionmentioning

confidence: 99%

A consensus model for Delphi processes with linguistic terms and its application to chronic pain in neonates definition

Agell

Ganzewinkel

Sánchez

et al. 2015

Applied Soft Computing

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This paper proposes a new model of consensus based on linguistic terms to be implemented in Delphi processes. The model of consensus involves qualitative reasoning techniques and is based on the concept of entropy. The proposed model has the ability to reach consensus automatically without the need for either a moderator or a final interaction among panelists. In addition, it permits panelists to answer with different levels of precision depending on their knowledge on each question. The model defined has been used to establish the relevant features for the definition of a type of chronic disease. A real-case application conducted in the Department of Neonatology of Máxima Medical Center in The Netherlands is presented. This application considers the opinions of stakeholders of neonate healthcare in order to reach a final consensual definition of chronic pain in neonates.

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Decision support approach based on multiple objectives and resources for assessing the relocation plan of dangerous hillside aggregations

Cited by 11 publications

References 14 publications

Blending the Analytic Hierarchy Process and Fuzzy Logical Systems in Scenic Beauty Assessment of Check Dams in Streams

Blending the Analytic Hierarchy Process and Fuzzy Logical Systems in Scenic Beauty Assessment of Check Dams in Streams

Hazard Ratings of Debris Flow Evacuation Sites in Hillside Communities of Ershui Township, Changhua County, Taiwan

A consensus model for Delphi processes with linguistic terms and its application to chronic pain in neonates definition

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