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Publicações

2026

Agricultural Expansion and Forest Transition in Mozambique: Evidence of Premature Decoupling (2001-2024)

Autores
Vilanculos, SDL; Mananze, SE; Cunha, MC;

Publicação
RESOURCES-BASEL

Abstract
This study analyzes forest cover change patterns, agricultural expansion, and economic growth in Mozambique from 2001 to 2024, using remote sensing data from Global Forest Watch and socioeconomic indicators from the World Bank and FAO. Mozambique lost approximately 4.6 million hectares of forest during the analyzed period, with agriculture accounting for 97.4% of total deforestation. GDP per capita increased by 90.5%, while cultivated area expanded by 116.4%. However, agricultural productivity declined by 25.3%, revealing a paradox: production growth relied on extensive land expansion rather than intensification. Statistical analysis of three 8-year sub-periods identified significant differences in GDP per capita, agricultural GDP per capita, population, and agricultural employment (p < 0.001), but agricultural deforestation remained statistically stable (p = 0.065). This pattern suggests premature decoupling between economic growth and deforestation at income levels (USD 604) substantially below historical Environmental Kuznets Curve thresholds (USD 8000-10,000). However, this decoupling is fragile, driven by capital-intensive extractive sectors that generate GDP growth without absorbing rural populations. The persistence of extensive agricultural expansion, combined with weak governance, demographic pressures, and climate variability, indicates that observed stabilization represents an initial, vulnerable phase requiring structural transformation through agricultural intensification, inclusive industrialization, land tenure reform, and climate resilience building.

2026

Enhancing pallet load stability: A MILP model for the Manufacturer's Pallet Loading Problem with interlocking constraints

Autores
Araújo, J; Ramos, AG; Silva, E; Moura, A;

Publicação
COMPUTERS & INDUSTRIAL ENGINEERING

Abstract
The Manufacturer's Pallet Loading Problem involves optimising the packing of a maximal number of identical rectangular boxes onto a single rectangular pallet. This problem arises in various logistic operations that involve the storage and transportation of boxed products, where efficient packing can result in substantial cost reductions and improved operational efficiency. Logistics managers anticipate that some boxes can be damaged during handling and transport, so the stability of the pallet load is essential to avoid such damage. The interlocking method is commonly used in practice to improve stability when loading pallets, minimising product damage and reducing the risk of injury to personnel handling the pallet. This study introduces a Mixed Integer Linear Programming model that addresses the Manufacturer's Pallet Loading Problem, promoting static stability through interlocking. Stability is evaluated with respect to the relationship between successive layers of the loading plan, with three types of interlocking incorporated into the mathematical model. Computational experiments with real-world instances were conducted to assess the model's performance using different objective functions and post-optimisation heuristics that target real-world requirements. Three stability metrics were used to evaluate the load plans generated by the mathematical model. The results show the interlocking method's benefits on the pallet loads' stability while maximising the pallet volume usage.

2026

Machine Learning and Principles and Practice of Knowledge Discovery in Databases

Autores
Koprinska, I; Mendes-Moreira, J; Branco, P;

Publicação
Communications in Computer and Information Science

Abstract

2026

Adaptive Sampling Strategies for Large-Scale Green ProductNetworks: A Random Walk and Neighborhood ExpansionFramework

Autores
Maia, M; Campos, P;

Publicação

Abstract
The growing importance of sustainability in consumer markets in recent years has attractedthe attention of researchers in industry-related fields. Large-scale product networks, which comprisemillions of connections between consumers and green products, facilitate the identificationof consumer-driven relationships between products and enable an understanding of the dynamicsof sustainable consumption. It is well-known that understanding the dynamics of these networks does not require observing the entire network. In this work, we propose an efficient way to analyze the dynamics between consumers and products through an adaptive sampling process that combines the Random Walk and a novel Neighborhood Expansion Framework. Theproposed hybrid framework uses a bipartite network projection, and applies adaptive samplingusing weighted random walks, and neighborhood expansion to enable efficient and representativenetwork exploration. Networks are first projected onto product–product similarity networks,where clusters of co-consumed items may reveal sustainability-oriented market segments. Then,adaptive weighted random walks dynamically balance the representation of popular and nichesustainable products, while neighborhood expansion preserves local structural context. We applythis novel methodology to consumer-product networks of sustainability-related attributesthat influence purchasing decisions, such as rankings and discounts, since the size and heterogeneityof such networks make direct analysis computationally challenging. Comparative resultsshow that the proposed approach outperforms uniform sampling in terms of efficiency, structuralfidelity, and retention of sustainability-related diversity. Empirical applications demonstrate itspotential to identify sustainability clusters, uncover links between eco-labeled and conventionalproducts, and support data-driven strategies for sustainable market transitions.

2026

Degradation-Aware Planning of Shared Battery Energy Storage Systems for Coordinated Transmission and Distribution System Operation

Autores
Simões, M; Peças Lopes, J; Soares, FJ;

Publicação

Abstract
Energy Storage Systems (ESSs) are an important source of flexibility in power systems with high penetration of Renewable Energy Sources (RESs). When installed at transmission-distribution interface nodes, shared ESSs can support both Transmission System Operators (TSOs) and Distribution System Operators (DSOs), but their long-term planning remains challenging because investment decisions depend on coordinated operation under uncertainty and battery degradation over time. This paper proposes a degradation-aware planning framework for shared battery ESSs in coordinated TSO-DSO operation. The problem is formulated as a bi-level stochastic optimization model in which the upper level determines siting, sizing, and staged investment decisions under investment-cost uncertainty, while the lower level evaluates these decisions through coordinated system operation. To preserve tractability, the framework combines Benders&apos; decomposition for long-term planning with an Alternating Direction Method of Multipliers (ADMM)-based decentralized coordination mechanism for short-term operation. The framework is evaluated on integrated IEEE transmission-distribution test systems over a 15-year planning horizon. Relative to uncoordinated operation, coordinated operation with shared ESSs reduces operating costs by up to 18.25% and RES curtailment by up to 92.16% in the later years of the planning horizon, while eliminating voltage violations. The results also show that degradation materially affects ESS valuation and that temporal discretization can influence siting and sizing decisions.

2026

Competitive and Cooperative Player-Oriented GWAPs for Enhancing Crowdsourcing Campaigns - An Evidence-Based Synthesis

Autores
Guimaraes, D; Correia, A; Paulino, D; Paredes, H;

Publicação
INTERNATIONAL JOURNAL OF HUMAN-COMPUTER INTERACTION

Abstract
The use of gamified crowdsourcing mechanisms through serious games and games with a purpose (GWAPs) has emerged as an effective motivational strategy for enhancing performance in human intelligence tasks (HITs). In this systematic literature review, we examine the underlying characteristics of competitive and cooperative player-oriented GWAPs and how they can be leveraged to optimize crowdsourcing performance in completing batches of HITs. By exploring gamified crowdsourcing elements in GWAPs, we can evaluate the impact of these two types of player behaviors (i.e., competition and cooperation) on motivation and performance. We reviewed 27 publications and grouped them into five categories: player orientation, game elements and motivation, crowd work optimization, gamified knowledge collection, and comparative studies and best practices. Our research pinpoints the significance of intuitive task instructions, alignment of game elements with player motivations, and the role of competitive and cooperative dynamics in enhancing engagement and performance.

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