Research works

Theory of High-Tc Superconductivity in Cuprates

Abstract The essential physical processes underlying the phenomenon of high-Tc superconductivity in cuprates occur in the $$CuO_2$$ planes, found in these materials. The dynamics of the active electrons belonging to such planes is well described by the Three Bands Hubbard Model (...

Why food stays contaminated: a COM-B framework analysis of child feeding practices in Dhaka’s informal settlements

Abstract Background Foodborne diseases are the major public health concerns in low- and middle-income countries, particularly during the complementary feeding period. Children become increasingly exposed to environmental pathogens at this age. Food hygiene during this period is c...

Programma Granata / PF∞ — Review-Open Hardened Candidate Ledger TG6S–TG6Y

This archive contains a review-open, not theorem-grade PF∞ hardened candidate ledger packet from the Programma Granata / PF3–PF∞ project. The packet records the TG6S–TG6Y sequence: a review-open C_var(k) candidate certificate assembly, PF∞ ledger candidate integration, total-unif...

Optimal canopy light-use strategy shapes global greenness dynamics

“Greenness” is a key indicator of the functional state of vegetation. However, the physiological processes behind seasonal patterns in greenness are diverse and incompletely understood, hindering the predictability of climate-driven shifts in global foliage phenology. Optimality...

A Dynamic Auroral Ionospheric Density Profile Reveals a Planetary-Scale Cavity at Jupiter

Low-altitude measurements above Jupiter’s main auroras have shown the presence of persistent auroral density depletions. This low density regime strongly favors auroral acceleration by inertial Alfvén waves to explain the predominance of energetic (100–1000 keV) broadband electro...

Evaluating the role of oxygen adsorption in the detection of local oxygen starvation conditions in proton-exchange membrane fuel cells

One of the key challenges in fuel cell systems control is avoiding local oxygen starvation, which can lead to the degradation of the catalyst layer. Reduced-order model-based control strategies can help to detect this situation and apply corrective measures in terms of working pr...

S-AI-Recursive: Convergent Recursive Reasoning

This article introduces S-AI-Recursive, a bio-inspired Sparse Artificial Intelligence architecture in which reasoning is operationalized as a hormonally regulated closed-loop iteration rather than a single feed-forward pass. Building upon the S-AI foundational framework [1], the...

The cosmological constant problem: An accessible introduction

We present a pedagogical introduction to the cosmological constant problem that requires only basic knowledge of quantum field theory and general relativity. A massive real scalar field is used to illustrate how the quantum vacuum energy density and pressure can be calculated bot...

Physics-informed neural predictor-corrector guidance for time-coordinated reentry of hypersonic glide vehicles

Abstract This paper addresses the time-coordinated reentry guidance problem for multiple hypersonic glide vehicles and proposes a physics-informed neural predictor-corrector guidance method. In the proposed framework, the path and terminal constraints are mapped to the bank-angle...

A broadband view of the thermal and nonthermal emission from the embedded massive star cluster RCW 38

Gamma-ray emission has been detected from a variety of source classes in the Galaxy, including clusters of young massive stars. RCW 38, a very young embedded massive star cluster, is of particular interest: its gamma-ray emission detected up to hundreds of GeV, provides the first...

A closed-loop authentication-detection security framework for edge computing environments integrating trusted computing and distilled pre-trained language models

Edge computing environments hosting tens of thousands of nodes face concurrent threats including node spoofing, data tampering, and distributed denial-of-service attacks, yet existing security solutions address authentication, intrusion detection, and resource scheduling in isola...

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...

Synergy of surface oxygen vacancies and built-in electric field in 0D/2D CeO2/SnSe2 S-scheme heterojunctions for enhanced photocatalytic malachite green degradation

Abstract Industrial effluents exacerbate aqueous contamination, necessitating the urgent remediation of toxic dyes such as Malachite Green (MG). In this study, a 0D/2D S-scheme heterojunction was constructed by anchoring CeO 2 nanocubes onto SnSe 2 hexagonal nanosheets via a prec...

The freedom to try to do what you want: randomness, organismal agency, and free will

Abstract The world is likely to be indeterministic. As a consequence, agents can never definitely settle anything, because there is always a chance that a random event can interfere with their actions. Yet organisms are able to exploit random processes in order to increase the pr...

How general is the incongruity effect in social episodic memory?

Research findings suggest that people remember reputational information that is incongruent to their expectations particularly well. However, in most of these experiments, the same facial images were used during both the learning and testing phases. This raises the question of wh...

Integrated pyrolysis and biorefinery strategies for valorising forest biomass for calcium acetate production

Forest biomass represents a promising resource within the bioeconomy, with significant potential for conversion into high-value chemicals and bioproducts. This work proposes an innovative pyrolysis oil biorefining pathway to valorise two types of underutilised forest biomass: Ale...

Model-based online estimation of the product gas water content and the product gas mass flow in a dual fluidized bed steam gasifier using the coarse product gas cleaning section

Replacement of fossil fuels and base chemicals by sustainable alternatives is one of today’s greatest challenges for economy and society. Dual fluidized bed steam gasification with downstream synthesis processes is a promising technology to generate versatile energy carriers and...

Role of small intestinal bacteria overgrowth in irritable bowel syndrome and anxiety: a retrospective Electronic Health Record (EHR)- based cohort study using triNetX

Abstract Aims : The goal of this study is to examine the relationship between small bacterial overgrowth (SIBO) and irritable bowel syndrome (IBS) with their subsequent risk of developing generalized anxiety disorder (GAD). Methodology : Data for this retrospective study was obta...

Scaffold, Not Seed -- Except One: Positional Encoding and the Emergent Group Representations of Grokking Transformers

A small transformer that groks modular addition famously discovers the Fourier representation of Z/p on its own. Prior work asks what algorithm is learned and which irreducible representations are used, always with the architecture held fixed. We ask one level up the causal chain...

Restoring Immune Tolerance in Rheumatic Disease

Autoimmune rheumatic diseases are still treated predominantly through broad or targeted suppression of inflammatory pathways, yet durable restoration of self-tolerance remains a central unmet therapeutic goal. This narrative review examines restoration of immune tolerance as an e...