Abstract This paper introduces an integrated methodology that exploits both GIS and the Decision-making Trial Evaluation Laboratory (DEMATEL) methods for assessing flood risk in Kosynthos River basin northeastern Greece. The study aims to address challenges arising from data limitations provide decision-makers with effective management strategies. integration of DEMATEL is crucial, providing a robust framework considers interdependencies among factors, particularly regions where conventional...

In this work, a new method to analyze the drought episodes based on annual precipitation time series and utilizing complex networks theory is proposed. The transformed into network using visibility algorithm.Then, several measures are computed characterize underlying connectivity. proposed analysis identifies important nodes which correspond low volume, providing way assess intensity without use of mean value standard deviation, sensitive climate change. Additionally, community detection...

Looped pipe networks are analysed assuming that all the input variables have precise crisp values. If hydraulic heads to be determined, water demands at nodes, diameters and roughness coefficient of pipes considered known crisp. The paper proposes a fuzzy set approach for addressing uncertainty nodes using Newton–Raphson method analysis. In contrast with other studies which adopt analysing behaviour looped networks, proposed methodology exploits monotony continuity equation nodes; therefore,...

Looped water distribution systems are conventionally analyzed using iterative methods such as Cross, Linear, Newton-Raphson, and Gradient algorithm methods. Depending on the unknown (hydraulic head or discharge), characterized h Q This paper focuses h-Newton-Raphson method, which uses Darcy-Weisbach loss equation. The presents a procedure for improving by directly calculating discharge of each branch Swamee Jain proposed leads to simplified more accurate determination Jacobian matrix,...

Abstract Conventionally, the design of urban water supply and distribution systems is based on assumption that all involved parameters are known a priori remain unaltered throughout life cycle system. However, significant uncertainties do appear during analysis these systems, such as equivalent pipe roughness actual internal diameters pipes. To study uncertainties, looped studied separately. For system, incorporated in using extension principle fuzzy sets new operation subtraction. Based...

Abstract This paper studies, through the principles of fuzzy set theory, groundwater response to meteorological drought in case an aquifer system located plains at southeast Xanthi, NE Greece. Meteorological is expressed standardized Reconnaissance Drought Index (RDISt) and Standardized Precipitation (SPI), which are calculated for various reference periods. These indices considered as independent variables multiple linear regression based on Tanaka's model, while observed water table...

This study proposes a hybrid fuzzy multi-criteria methodology for the selection of most preferable site applying managed aquifer recharge (MAR) systems by utilizing floodwaters. The use MAR can increase water resources later utilization in case drought. In this problem, seven sites are under consideration, based on nine criteria, aiming to make final list their relative ranking. A analytic hierarchy process (FAHP) logarithmic preference programming (LFFP) method is used determine weights...

AbstractThe urban water distribution systems are conventionally analysed using iterative methods such as Cross, Linear, Newton–Raphson and Gradient algorithm. The basic assumption of those is that the outflow concentrated at nodes it always known constant. However, each node dependent on pressure node. paper presents a new methodology for analysing looped systems, incorporating pressure-dependent h-Newton–Raphson method was modified recently by direct exact equation to calculate flow branch...

The “One Out–All Out” (OOAO) principle imposed by the WFD selects worst ecological status assessed different biological quality elements (BQEs). Since it is a precautionary rule that can lead to problems of underestimation overall status, its amendment has been matter debate for 20+. use fuzzy methods express functional relationships between variables in ecology and management gaining more ground recently. Here attempted inclusion regression among frequently monitored BQE (phytoplankton)...

Social-Ecological Systems (SESs) are systems with close linkage between nature and societies. Coastal lagoons SESs crucial for the ecosystem services (ESs) provided, especially in Mediterranean Basin, facing threats from anthropogenic activities climate change. Management strategies focusing solely on ecological elements’ improvement have not yielded desired outcomes, as they often neglect needs perspectives of stakeholders. Participatory approaches promote engagement awareness to develop...