In this paper, a nonlinear model for medium-term hydro-thermal scheduling problems with transmission constraints is presented. A formulation of hydro power production functions discharge and storage used proper representation head variation in cascaded reservoirs. Transmission networks are formulated as direct-current flow support to load attainment over multiple levels representing peak off-peak hours, enabling varying degrees both network topology balance nodes time stages. Sparse matrix...

This investigation aims to study the El-Niño-Southern Oscillation (ENSO) events in these three phases: El Niño, La Niña, and neutral. Warm cold relate Spring/Summer seasons. paper will search for connections between ENSO climate anomalies worldwide. There is some speculation that those would be necessary observed After analyzing data from reports ENSO, it shows almost periodicity 1950-2023. We emphasized occurrence of Niño two years, when was most prominent, (following NOAA maps), 2015 2023....

This paper inspects possible influence of solar cycles on earthquakes through statistical analyses. We also discussed the mechanism that would drive occurrence increasing during maxima. The study was based worldwide events approximately four hundred years (1600-2010).The increase followed Maxima Solar cycle, and depends tectonic plate location. From 1600 until 1645 increased in some plates as Pacific, Arabian South America. analyzed two grand minima, Maunder (1645-1720) Dalton (1790-1820)...

This paper formulates the 3D containership loading planning problem (3D CLPP) and also proposes a new compact representation to efficiently solve it. The key objective of stowage is minimise number container movements ship's instability. binary formulation this properly described an alternative called Representation by Rules proposed. combined with three metaheuristics – genetic algorithm, simulated annealing, beam search CLPP in manner that ensures every solution analysed optimisation...

From a climate change perspective, the governance of natural common-pool resources—the commons—is key point in challenge transitioning to sustainability. This paper presents main strategic advances São Paulo Urban Living Laboratory (ULL) regarding Food, Energy and Water (FEW Nexus) analysis modelling at border high biodiverse forest peri-urban region southeast Brazil. It is replicable scalable method concerning FEW governance. The Nexus an analytical guide actions that will enable colossal...

This paper searches for a connection between volcanoes and solar variability. Solar events have been investigated as possible interference with hazardous natural on Earth. The first results pointed out that during the minimum, frequency strength of increased. However, variability is not only factor disturbing volcanic eruptions; there also seasonality. There double from Sun volcanoes, one cycles, second seasons.

The greater flow of containers in global supply chains requires ever-increasing productivity at port terminals. research found the literature has focused on optimizing specific parts operations but ignored important features, such as stack-wise organization a container ship and yard effects interconnection among both places. objective this paper is to show importance designing an integrated plan relocation problem with stowage planning for loading unloading through ports. Both individual...

This paper examines possible connections between volcanic eruptions and their consequences on the weather. Gas emissions, such as CO2 SO2, are vital in troposphere change temperatures Earth's surface. The water vapor discharges can be moved for three atmospheric layers creating extra rivers disrupting Polar vortex. All those deviations will bring to It depends intensity, emission type, kind of volcano, location. Then, with sudden fluctuations unexpected season.

Background: The treatment for Crohn’s disease (CD) has increasingly required the use of biological agents. Safe and affordable tests have led to active implementation therapeutic drug monitoring (TDM) in clinical practice, which, although not yet widely available across all health services, been proven effective. Objective: To analyze serum infliximab (IFX) antidrug antibody (ADA) levels CD patients, compare two tests, as well construct a prediction neural network using combination clinical,...

Purpose Higher education institutions (HEIs) are crucial in sustainable development. To this end, they must infuse sustainability into all their endeavors. This study aims to delve the unique vertically integrated project (VIP), a project-based learning approach and its impact on students’ skills surrounding community. Design/methodology/approach The research design was collaborative, reflecting spirit of VIP. Step 1 involved an action approach, where students instructors worked closely with...

This article proposes a comprehensive framework for R&D and innovation project selection under uncertainty subject to real-world constraints applicable the Brazilian electricity sector, using combination of integer programming formulation PROMETHEE-based method. The objective is contribute this domain by offering an approach suitable challenges but also other situations involving investments similar conditions. manuscript presents applications real data from company. It compares proposed...

This paper presents a new formulation for the security constrained optimal active power flow problem which enables representation of three basic constraints: branch outage, generator outage and multiple equipment congestion. It consists network model with additional linear equality inequality constraints quadratic separable objective function, is efficiently solved by predictor-corrector interior point method. Sparsity techniques are used to exploit matricial structure problem.Case studies...

The network flow method is used in many areas and also power system problems. main application optimal calculation, this article presents three approaches complementing early developments: direct current flow, with explicit losses alternating flow. We detail the mathematical formulation of each approach test it to a simple describing constraint matrices. Then we compare showing advantages model.

The aim of this paper is to continue analyzing the interactions in three-body system made up Sun, Moon, and Earth. First, we review new details about Moon-Earth connections, with a special focus on mechanical forces. Following, expand study consider pair Sun-Earth, calculations for electromagnetic objective both cases know how forces affect seismological events Our found that Solar Cycles have no direct interaction earthquake variations. Instead, established there an internal discrepancy...

The aim of this paper is to investigate the effects on Moon-Earth gravitational variations and Moon phases during three Solar Cycless (SC22, SC23, SC24). first part defines forces as a force that creates an oscillation when moon reaching Perigee, smallest distance between Earth its rotational movement around Earth. It has small amplitude large period. Unlikely other authors, we do not find direct connection big earthquakes worldwide. study performed through Cycless, which refers variation in...

This paper is a study to understand how climate changed last fifty years. There are two theories: the first one considers solar variability and influence of those alterations on climate; second blames human activity consequences temperatures disruption environment created by humans. Our conclusions pointed out that dimensions involved between Earth Sun, Earth/Atmosphere, can disturb temperature Earth's surface make seasonality variations impossible be explained only Sun/Earth connections.