Universidad Distrital Francisco José de Caldas

Feasibility Region Analysis of a Single-Phase PWM Current Source Converter for Constant Power Loads in Smart Grid and Microgrid Applications

Constant power loads (CPLs) introduce nonlinear voltage–current characteristics that can restrict the feasible operation of power-electronic converters. This paper presents a nonlinear steady-state framework for characterizing the feasible operating region of a single-phase PWM c...

Stochastic Convex Optimization for Day-Ahead Shared Battery Storage Scheduling in Solar Energy Communities

Energy communities represent a transformative paradigm for decentralized renewable energy integration, enabling collective investment in photovoltaic (PV) systems and battery energy storage systems (BESS) to achieve economic and environmental benefits. However, the optimal operat...

Environmental drivers shape soil mite communities along succession, with limited links to litter decomposition in upper Andean tropical forests

Abstract Mite composition varied among sites but was stable between wet and dry seasons. Succession altered mite composition but not abundance or richness. Microclimatic and edaphic factors drive mite communities, with group specific responses. Few associations between mites and...

On the need to account for soil erosion rates in water quality indices for tropical Rivers: Insights from Cesar River, Colombia

A large body of research suggests that soil erosion in developing countries is reaching critical rates and that its offsite effects (e.g., increased sediment concentration in water bodies) could be amplified by global warming. In most cases, Water Quality Indices (WQI) do not dif...

Regional Hydroclimatic Sensitivity of Monthly Precipitation Anomalies to ENSO in the Colombian Andes and Orinoquia

El Niño–Southern Oscillation (ENSO) modulates tropical South American rainfall, but its Colombian expression is filtered by terrain, rainfall regime, moisture pathways, and atmospheric state. We quantify ENSO-related sensitivity of standardized precipitation anomalies in the Colo...

Effect of External Electric Fields on Defective AlN/GrapheneHeterobilayer: A First-Principles Study

Abstract Graphene-based van der Waals heterobilayers play a fundamental role in the fabrication of optoelectronic, micro- and nanoelectronic, and spintronic devices. In this paper, four new stackings for the (4 × 4)-AlN/(5 × 5)-graphene denominated as AA, AA′, A′B, and A′B′ are i...