scholarly journals Fuzzy AHP Integrated with GIS Analyses for Drought Risk Assessment: A Case Study from Upper Phetchaburi River Basin, Thailand

Water ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 939 ◽  
Author(s):  
Saowanee Wijitkosum ◽  
Thavivongse Sriburi
Keyword(s):  
River Basin ◽  
Fuzzy Ahp ◽  
Physical Factors ◽  
Drought Risk ◽  
Land Utilization ◽  
Factors Affecting ◽  
Risk Levels ◽  
Main Factors ◽  
Agricultural Areas ◽  
Hierarchy Process

This study aimed to analyse and assess desertification risks in the Upper Phetchaburi River Basin. Upstream areas are especially crucial for aquatic ecosystems since the mid- and downstream areas are continuously being utilized for agricultural and community purposes. Many parts of the basin have been at moderate risk of drought. The fuzzy analytical hierarchy process (FAHP) is an effective and widely accepted model used to identify complicated environmental problems and disasters and prioritize factors in environmental studies. This study emphasized on four main factors influencing drought: Climate, physical factors, soil and land utilization factors. Each factor contains ten sub-criteria to identify severity levels and specific issues. The major areas of the basin were facing different risk levels: moderate (21%), high (5.79%) and severe (0.07%). Precipitation and slope gradient were the main factors affecting drought risks. The problematic areas were agricultural areas located in midstream and downstream areas. Therefore, spatial mitigations and possible ways forward should focus on increasing moisture contents—to reduce soil erosion and enhance soil fertility—and create restrictions to ensure appropriate land use. The mitigations must take into account spatially critical factors and must also include an integrated plan for the entire basin area.

RISK ASSESSMENT OF ARCTIC NAVIGATION BY USING IMPROVED FUZZY-AHP APPROACH

2021 ◽  
Vol 157 (A4) ◽  
Author(s):  
B Sahin ◽  
S Kum
Keyword(s):  
Fuzzy Ahp ◽  
Weather Conditions ◽  
Risk Identification ◽  
The Arctic ◽  
Risk Levels ◽  
Global Logistics ◽  
Geographical Position ◽  
Arctic Navigation ◽  
Hull Damage ◽  
Hierarchy Process

In this study, navigational risk factors of the Arctic Ocean are defined and numerical weights of each risk are obtained by using Improved Fuzzy Analytical Hierarchy Process (IF-AHP) method after conducting expert consultations. The Northern Sea Route shortens the maritime distance approximately 7000 nautical miles comparing to the conventional Suez Canal route. Therefore, it takes a significant role of being economic and time advantage for global logistics. Its geographical position, presence of ice, heavy weather conditions, strong currents and winds are some risks for Arctic transportation. There always have the possibility of unpredictable catastrophes such as a collision, grounding, hull damage and etc. in this region. Reflections of such unwanted incidents might be very costly for economic, political, environmental and safety concerns. Due to there are limited academic studies regarding to analytical and systematical risk identification and determination of risk levels, this study contributes to complete this academic gap.

Remote Sensing Monitoring and Analysis on Land Utilization Status on Aksu River Basin of Xinjiang Uygur Autonomous Region

2011 ◽  
Vol 282-283 ◽  
pp. 177-180
Author(s):  
Bai Lian Lai
Keyword(s):  
Remote Sensing ◽  
River Basin ◽  
Great Influence ◽  
Land Development ◽  
Tarim River ◽  
Tarim River Basin ◽  
Land Utilization ◽  
Factors Affecting ◽  
Remote Sensing Monitoring ◽  
The Tarim River Basin

Aksu river is one of the biggest branches in the Tarim river basin, where the land utilization and its changes have great influence on the water supply in the lower reaches, and they are also the main factors affecting its ecological restoration. This paper, with the help of three-level intermediate resolution and remote sensor, carries out the remote sensing monitoring and analysis on its land utilization, analyses the changes of farmland and construction land, and provides basis for the planning of land development and the comprehensive assessment for the ecological environment.

scholarly journals Assessing Factors for Designing a Successful B2C E-Commerce Website Using Fuzzy AHP and TOPSIS-Grey Methodology

Symmetry ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 363
Author(s):  
Ran Li ◽  
Tao Sun
Keyword(s):  
Decision Making ◽  
Analytical Hierarchy Process ◽  
Fuzzy Ahp ◽  
Literature Survey ◽  
Multi Criteria Decision Making ◽  
The Core ◽  
Business To Consumer ◽  
Main Factors ◽  
Hierarchy Process

The recent hype in online purchasing has skyrocketed the importance of the electronic commerce (e-commerce) industry. One of the core segments of this industry is business-to-consumer (B2C) where businesses use their websites to sell products and services directly to consumers. Thus, it must be taken care of that B2C websites are designed in a way which can build a trustworthy and long-term relationship between businesses and consumers. Thus, this study assesses and prioritizes factors for designing a successful B2C e-commerce website. The study employs multi-criteria decision making (MCDM), and to minimize any ambiguity and greyness in the decision-making, it integrates fuzzy and grey respectively with the Analytical Hierarchy Process (AHP) and Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) to form FAHP and TOPSIS-Grey. Initially, the study conducts a thorough literature survey to screen important factors reported in past studies. Five main factors and nineteen sub-factors were selected for further prioritization. Later, FAHP prioritized factors based on their importance. Finally, based on the FAHP results, TOPSIS-Grey ranked five alternatives (e-commerce websites). FAHP revealed “service quality” as the most successful website designing factor, while TOPSIS-Grey reported “Website-3” as the most successful website, having incorporated the factors required to design a successful website.

scholarly journals Perceived and actual risks of drought: household and expert views from the lower Teesta River Basin of northern Bangladesh

2021 ◽  
Author(s):  
Roquia Salam ◽  
Bonosri Ghose ◽  
Badhon Kumar Shill ◽  
Md. Aminul Islam ◽  
Abu Reza Md. Towfiqul Islam ◽  
...  
Keyword(s):  
Risk Reduction ◽  
Survey Data ◽  
River Basin ◽  
Perceived Risk ◽  
Disaster Risk Reduction ◽  
Risk Index ◽  
Disaster Risk ◽  
Drought Risk ◽  
Household Level ◽  
Risk Levels

AbstractDisaster risk perception and risk appraisal are essential in formulating an appropriate disaster risk reduction policy. This study examines the actual vs perceived drought risks by constructing risk indices at the household and expert levels using survey data from the lower Teesta River Basin in northern Bangladesh. The survey data were collected from 450 farmers using a structured questionnaire conducted between August and September 2019. A composite drought risk index was developed to understand households’ perceived and actual risks in the designated areas. The results show that the actual and perceived risk values differ significantly among the three case study sites locally known as Ganai, Ismail, and Par Sekh Sundar. The risk levels also differ significantly across the households’ gender, income, occupation, and educational attainment. People with insolvent socioeconomic status are more prone to drought risk compared to others. Results also reveal that the mean level of perceived risk agrees well with the actual risk, whereas females perceive comparatively higher risk than their male counterparts. Expert views on drought risk are similar to the individual household level perceived risk. The outcomes of this study would assist the policymakers and disaster managers to understand the concrete risk scenarios and take timely disaster risk reduction actions for ensuring a drought-resistant society.

scholarly journals APPLICATION OF AHP (ANALYTIC HIERARCHY PROCESS) FOR DETERMINATION THE AFFECTING MAIN FACTORS IN SOIL EROSION AT SONG BE BASIN

2011 ◽  
Vol 14 (4) ◽  
pp. 41-50
Author(s):  
Ngan Truong Nguyen
Keyword(s):  
Soil Erosion ◽  
Analytic Hierarchy Process ◽  
Plant Cover ◽  
Analytic Hierarchy ◽  
Slope Length ◽  
Factors Affecting ◽  
Erosion Processes ◽  
Two Factors ◽  
Main Factors ◽  
Hierarchy Process

Soil erosion is a global environmental problem. The affecting main factors for soil erosion processes are different due to the specific areas. The calculated results of soil erosion, by Ha Quang Hai and Tran Tuan Tu, demonstrated that Song Be basin is eroded very huge, about 321 tons/ha/year. The article is based on factors proposed by R.P.C Morgan in 2005, using the analytic hierarchy process AHP (Thomas L. Saaty, 1970) to determine the weights for these factors. Since then, the article concluded main factors affecting soil erosion at Song Be basin. Research results showed that the Terrain factor has the largest weight (0.30), followed by two factors: Plant cover (0.29) and Rain (0.28). The article also identified four main factors impacting on the soil erosion at Song Be basin, including: slope, land cover ratio, intensity of rainfall and slope length. These results will be the basis for subsequent studies to adjust USLE model more applicably for erosion characteristics in the researched area.

scholarly journals Ranking the Success Factors to Improve Safety and Growth of Artichoke Medicinal Plant Using Fuzzy Analytic Hierarchy Process

2020 ◽  
Author(s):  
Javad Rezaeian ◽  
F. Talebi ◽  
R. Alizadeh Foroutan
Keyword(s):  
Analytic Hierarchy Process ◽  
Success Factors ◽  
Food Source ◽  
Comprehensive Analysis ◽  
Fuzzy Analytic Hierarchy Process ◽  
Analytic Hierarchy ◽  
Factors Affecting ◽  
Medium Level ◽  
Main Factors ◽  
Hierarchy Process

Today, the use of herbal medicine like artichoke is rapidly increasing worldwide. The consumption of artichoke as a food source is raising too. Therefore, it is necessary to determine the main factors affecting the growth of this plant which is investigated in this study. A comprehensive analysis of the literature is performed to detect these factors. A fuzzy Analytic Hierarchy Process (AHP) is employed to prioritize the factors. Results indicate that the conditions of irrigation and soil are the most important ones. In addition, the best conditions for artichoke growth are the medium level of irrigation, soil with suitable drainage, low temperature and sufficient sunlight.

Impact factor analysis of aquatic species diversity in the Huai River Basin, China

2019 ◽  
Vol 19 (7) ◽  
pp. 2061-2071
Author(s):  
Hao Chen ◽  
Qi-ting Zuo ◽  
Yong-yong Zhang
Keyword(s):  
Species Diversity ◽  
River Basin ◽  
Environmental Indicators ◽  
Analysis Method ◽  
Factors Affecting ◽  
Physicochemical Variables ◽  
Huai River Basin ◽  
Huai River ◽  
Main Factors ◽  
The Huai River Basin

Abstract Water pollution has been a significant issue in the Huai River Basin (HRB) of China since the late 1970s. From December 2012, five experiments were carried out along the main streams of the HRB. The monitoring indices contained physicochemical variables, habitat environmental indicators and the community structure of phytoplankton, zooplankton and zoobenthos. The correlations between species diversity and physicochemical variables were analyzed using cluster analysis, correlation analysis method and redundancy analysis method. Results indicated that the species diversities of the Shaying River's upstream and Huai River's mainstream were better than the Shaying River's midstream and downstream. All the sections were divided into five clusters, and different clusters were affected by different physicochemical factors. Dissolved oxygen (DO), habitat quality index (HQI) and chemical oxygen demand (CODCr) were the main factors affecting the species diversity of the Shaying River's upstream; total phosphorus (TP), total nitrogen (TN), ammonia nitrogen (NH4-N), CODCr and permanganate index (CODMn) had a great influence on the Shaying River's midstream and downstream; DO, water temperature (WT), HQI and CODCr were the main factors affecting the Huai River's mainstream. These results provide valuable information for policy decision makers and stakeholders on water quality assessment, water ecosystem restoration, and sustainable watershed management in the HRB.

Risk Assessment of Arctic Navigation by using Improved Fuzzy-AHP Approach

2015 ◽  
Vol 157 (A4) ◽  
pp. 241-250 ◽  
Keyword(s):  
Fuzzy Ahp ◽  
Weather Conditions ◽  
Risk Identification ◽  
The Arctic ◽  
Risk Levels ◽  
Global Logistics ◽  
Geographical Position ◽  
Arctic Navigation ◽  
Hull Damage ◽  
Hierarchy Process

"In this study, navigational risk factors of the Arctic Ocean are defined and numerical weights of each risk are obtained by using Improved Fuzzy Analytical Hierarchy Process (IF-AHP) method after conducting expert consultations. The Northern Sea Route shortens the maritime distance approximately 7000 nautical miles comparing to the conventional Suez Canal route. Therefore, it takes a significant role of being economic and time advantage for global logistics. Its geographical position, presence of ice, heavy weather conditions, strong currents and winds are some risks for Arctic transportation. There always have the possibility of unpredictable catastrophes such as a collision, grounding, hull damage and etc. in this region. Reflections of such unwanted incidents might be very costly for economic, political, environmental and safety concerns. Due to there are limited academic studies regarding to analytical and systematical risk identification and determination of risk levels, this study contributes to complete this academic gap."

scholarly journals Sustainability of denitrifying bioreactors with various fill media

2017 ◽  
Vol 63 (No. 10) ◽  
pp. 442-448 ◽  
Author(s):  
Malá Jitka ◽  
Bílková Zuzana ◽  
Hrich Karel ◽  
Schrimpelová Kateřina ◽  
Kriška Michal ◽  
...  
Keyword(s):  
Laboratory Experiments ◽  
Hydraulic Retention Time ◽  
Agricultural Runoff ◽  
Factors Affecting ◽  
Pine Sawdust ◽  
Spruce Wood ◽  
Main Factors ◽  
Agricultural Areas ◽  
The Impact

Nitrogen losses from utilised agricultural areas are responsible for water quality degradation and eutrophication. Denitrifying bioreactors can be used to reduce high nitrate concentrations in agricultural runoff in situ. The main factors affecting their function are the bioreactor fill medium and process parameters such as hydraulic retention time, temperature and inlet concentration of nitrates. The paper presents the results of laboratory experiments achieved with bioreactors filled with eight different wood-based materials, namely mulch, a mixture of spruce and pine sawdust, a mixture of pine and larch bark, and chips made of oak, poplar, larch, beech, and spruce wood. A sustainability index was used to assess the impact of the bioreactor on the environment. The best results were shown by beech, mulch and poplar and were achieved with hydraulic retention times 1.6–0.7–2.2 days, respectively, and inlet NO<sub>3</sub><sup>–</sup>-N concentration of 43.1 mg/L.

scholarly journals Elicitation of the Factors Affecting Electricity Distribution Efficiency Using the Fuzzy AHP Method

Mathematics ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 82
Author(s):  
Vecihi Yiğit ◽  
Nazlı Nisa Demir ◽  
Hisham Alidrisi ◽  
Mehmet Emin Aydin
Keyword(s):  
Crucial Role ◽  
Energy Supply ◽  
Fuzzy Ahp ◽  
Electricity Distribution ◽  
Factors Affecting ◽  
Distribution Company ◽  
And Performance ◽  
Hierarchy Process

Efficient and uninterrupted energy supply plays a crucial role in the quality of modern daily life, while it is obvious that the efficiency and performance of energy supply companies has a significant impact on energy supply itself and on determining and finetuning the future roadmap of the sector. In this study, the performance and efficiency of energy supply companies with respect to productivity is investigated with reference to a case study of an electricity distribution company in Turkey. The factors affecting the company’s performance and their corresponding weight have been determined and obtained using the analytical hierarchy process (AHP) and the Fuzzy AHP methods, two well-known multi-criteria decision-making methods, which are widely used in the literature. The results help demonstrate that the criteria obtained to evaluate the company’s energy supply performance play a crucial role in developing strategies, policies and action plans to achieve continuous improvement and consistent development.

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