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Article
Engineering
Mining and Mineral Processing

Andrea Navarro Jiménez

Abstract: Artisanal and illegal gold extraction in ecologically sensitive tropical landscapes can generate persistent environmental damage and public fiscal liabilities that accumulate even under formal mining prohibitions. A decision-grade pipeline is presented that converts observable environmental signals into (i) spatial prioritization surfaces, (ii) phase-timed remediation portfolios, and (iii) present-value (PV) comparisons of legislative policy pathways under uncertainty, demonstrated for the Crucitas mining landscape (Cutris, northern Costa Rica). Five linked models are implemented. Remote-sensing change proxies are derived using consistent baseline (January 2019–December 2020) and recent (February 2024–January 2025) windows; multi-criteria indices then produce a 0–100 grid-cell prioritization surface integrating land, water, and hydrologic dimensions. This prioritization output is translated into a phased remediation portfolio across 1,324 costed grid cells, yielding a gross liability of US$548.0 million (10-year PV; 5% discount rate). PSA-related credits total US$167.3 million PV; enforcing a cell-level non-negativity floor yields a baseline net PV of US$408.0 million (simple gross-minus-credits would be US$380.8 million). Deterministic policy overlays produce policy-adjusted net PV of US$336.1 million under Exp. 24.717 (minimum 5% royalty case; Δ = −US$71.9 million vs baseline; modeled royalty PV = US$93.8 million), US$503.0 million under Exp. 24.675 (Δ = +US$95.0 million), and US$510.3 million under Law No. 8904 (Δ = +US$102.3 million). Royalty-rate sensitivity cases for Exp. 24.717 yield deterministic policy-adjusted net PV of US$242.3 million (10%) and US$148.5 million (15%). Monte Carlo propagation yields a right-tailed baseline distribution (P10–P90 = US$385.4–519.1 million; P50 = US$450.1 million), with exceedance probabilities P(>US$400 million) = 0.8357 and P(>US$500 million) = 0.1786. Policy-adjusted uncertainty bounds indicate substantially reduced exceedance risk under Exp. 24.717 (5% royalty case; P(>US$400 million) = 0.3542; P(>US$500 million) = 0.0153), with further reductions at higher take-rates (10%: P(>US$400 million) = 0.0375; P(>US$500 million) = 0.0007; 15%: P(>US$400 million) = 0.0028; P(>US$500 million) = 0.0000), while non-mining pathways shift the distribution upward. The results support PV-consistent, uncertainty-aware ranking of contested pathways, with outcomes conditional on enforceable offsets, credible enforcement effectiveness, and residual-risk provisioning. The framework is transferable to other contested mining landscapes where phased interventions and policy alternatives require fiscally comparable evaluation.

Article
Environmental and Earth Sciences
Atmospheric Science and Meteorology

Aashish Upreti

,

Kira Shonkwiler

,

Stuart N. Riddick

,

Daniel Zimmerle

Abstract:

Methane (CH4) is a major component of natural gas and a potent greenhouse gas. Increasing atmospheric methane concentrations are attributed to emissive anthropogenic activities by an average of 13 ppb per yr since 2020 and are linked to a changing global climate. Mitigating CH4 emissions from oil and gas production sites has recently become a target to reduce overall greenhouse gas emissions, however, monitoring the efficacy of mitigation strategies depends on accurate quantification of CH4 emissions at the facility-level. Near-field quantification of methane (CH4) emissions from oil and gas (O&G) facilities remains challenging due to the effects of atmospheric variability and sensor configuration on atmospheric dispersion models. This study evaluates the performance of two atmospheric dispersion models, the Gaussian Plume (GP) and backward Lagrangian Stochastic (bLS), by comparing calculated CH4 emissions to controlled single-point emissions of between 0.4 and 5.2 kg CH4 h-1. Emissions were calculated by both models using 121 individual sets of measurements comprising five-minute averaged downwind methane mixing ratios and matching meteorological data. Comparison shows the bLS approach showed better predictive performance with twice as many emission estimates were within a factor of two (FAC2) of the known emission rates compared to those calculated using the GP approach. The emissions calculated by the bLS model also had a lower multiplicative error and reduced bias relative to GP. Other error-based metrics further confirmed the bLS model performed better, as it yielded lower RMSE and MAE than GP. Statistical analysis of the emission data shows the lateral and vertical alignment of source and sensor plays a critical role in emission estimations as measurements made closer to the plume centerline and at a distance between 40 to 80 m downwind yielded the best FAC2 agreement. High wind meander degraded ability of both approaches to generate representative emissions particularly with the GP approach as it violates the modelling approach’s assumption of steady-state emissions. Data suggest emissions calculated by the bLS model are comprehensively in better agreement but the computational demands of the modeling approach and integration into fenceline systems limit real-time applicability. While it is likely that the results presented here are suitable for informing leak detection technology in relatively flat unvegetated environments, it is currently unknown if these findings will be applicable in more vertiginous or heavily vegetated oil and gas producing regions of the Marcellus or Uinta Basins.

Case Report
Medicine and Pharmacology
Dermatology

Naguib El Sayed El Farnawany

Abstract: Background and Clinical Significance: Basal cell carcinoma (BCC) is the most common malignant tumor of the skin and represents the majority of non-melanoma skin cancers, particularly affecting sun-exposed facial areas. Surgical excision remains the gold standard due to high cure rates, especially for high-risk facial lesions. However, patient refusal of biopsy or surgery may create therapeutic challenges. This case highlights a non-surgical alternative approach and emphasizes its clinical implications; Case Presentation: A 60-year-old Egyptian man with uncontrolled hypertension and type 2 diabetes mellitus presented with an ulcerative lesion located between the left nasal wall and lower eyelid. Clinical examination revealed raised pearly borders and central necrosis, highly suggestive of nodulo-ulcerative basal cell carcinoma. The patient refused biopsy and surgical intervention despite counseling and referral for Mohs micrographic surgery. A non-surgical regimen was initiated consisting of cryotherapy every two weeks using two freeze–thaw cycles of four seconds each with a 2-mm margin, combined with topical imiquimod 5% cream applied three times weekly. Episodic local inflammatory reactions occurred and were managed conservatively with temporary interruption and emollient therapy. Fusidic acid ointment was applied post-cryotherapy. Complete clinical resolution was achieved after five months with residual scarring and no recurrence during one year of follow-up; Conclusions: Combined cryotherapy and topical imiquimod may represent a viable therapeutic alternative in carefully selected patients refusing surgical management. Close monitoring and long-term follow-up remain essential.

Article
Biology and Life Sciences
Agricultural Science and Agronomy

Frederik Botha

Abstract: Bulky plant storage organs frequently experience restricted internal oxygen diffusion, yet how such tissues remain metabolically active while accumulating large quantities of storage carbohydrate remains unresolved. In sugarcane, the culm accumulates exceptionally high sucrose concentrations despite sustained respiration, suggesting that storage metabolism operates under specific energetic constraints. We estimated growth and maintenance respiration along developing sugarcane internodes using a composition-based carbon accounting framework across stages representing rapid elongation and mature storage. Growth respiration peaked in elongating internodes (3–6), whereas maintenance respiration increased progressively with maturation and dominated in mature storage tissue (internodes 10–12), demonstrating that mature internodes remain metabolically active despite cessation of structural growth. Despite this sustained metabolic demand, mature tissue accumulates sucrose rather than depleting it. Modelled internal oxygen limitation reduced ATP yield per unit substrate without suppressing metabolic activity. Under severe oxygen limitation the carbohydrate requirement for maintenance metabolism more than doubled in mature internodes, indicating that storage tissue operates with reduced energetic efficiency. We therefore propose that the sugarcane culm operates a pyrophosphate-supported metabolic configuration in which ATP demand is minimised and carbon is conserved. In this framework oxygen limitation alters the energetic currency of metabolism rather than suppressing metabolic activity, allowing cellular maintenance to continue without proportional consumption of stored sucrose. This interpretation is consistent with previously observed extensive recycling between triose-phosphates and hexose-phosphates during sucrose accumulation, suggesting that this cycling represents an ATP-conserving metabolic strategy rather than futile metabolism. These results indicate that sucrose storage in sugarcane reflects an alternative energy economy of an oxygenlimited storage organ, linking respiratory energetics, hypoxia and carbon partitioning in a C4 crop.

Review
Biology and Life Sciences
Biochemistry and Molecular Biology

Einstein Bravo

,

Alfonso H. del Río

,

Héctor V. Vásquez

,

Einstein Sánchez

,

Omer Cruz

,

Eli Pariente

,

Rosalynn Y. Rivera

,

Carlos I. Arbizu

Abstract: Manilkara (Sapotaceae) includes tropical tree species of high ecological and socio-economic value, yet genetic and phylogenetic evidence remains uneven across taxa and eco-geographic regions. Here, we synthesize studies conducted between 1999 and 2025 which summarize the use of molecular markers to infer genetic diversity, connectivity, population structure, and evolutionary relationships within this genus. The studies are dominated by PCR-based marker systems, including dominant markers (like RAPD and SCoT) and microsatellites from the nuclear genome and plastid genome. Other studies rely on PCR-amplified sequence loci, such as ITS and chloroplast regions, while others use high-throughput technologies, including NGS-assisted SSR development, sequences of complete plastomes, and targeted nuclear sequencing. Overall, studies using SSRs provide the most informative estimates for within-species diversity and fine-scale structure, whereas plastid datasets (cpSSR/cpDNA) mainly support inference on maternal lineages and plastid-based relationships but can be constrained by uniparental inheritance and limited variation, especially under small sampling. Some limitations found include heterogeneous sampling, inconsistency in reporting the methodological parameters, and limited connection with ecological or phenotypic parameters which restricts chances of inferences on demography and adaptation. Based on this review, future research in Manilkara would benefit from setting up a broader taxonomic and geographic coverage, incorporating genome-wide technology where feasible to strengthen conservation management, and breeding opportunities in Manilkara.

Article
Biology and Life Sciences
Horticulture

Xiao Xiao Wu

,

Shi Man Wu

,

Hai Meng Fang

,

Ding Huang

,

Chuan Wu Chen

,

Bing Hai Lou

,

Ping Liu

,

Yang Tang

,

Jing Feng

,

Chong Ling Deng

Abstract: To establish standardized DNA fingerprinting and molecular identification systems for citrus, we analyzed 69 mandarin accessions via fluorescent SSR capillary electrophoresis to construct DNA molecular fingerprints and unique molecular identity cards. Eighteen highly polymorphic SSR primer pairs were screened, yielding 239 genotype calls and 147 alleles. The number of amplified alleles per primer pair ranged from 4 to 18, with polymorphic information content (PIC) values varying from 0.411 to 0.650. Ten core primer pairs were further selected, achieving a discrimination rate of 65.2% (45 out of 69 accessions distinguished). Utilizing these fluorescent SSR markers, we established DNA molecular fingerprints and unique molecular identity cards for all 69 accessions. Among them, 45 accessions possessed unique fingerprints, whereas the remaining 24 indistinguishable accessions were clustered into six groups. Each cluster contained both wild (4 accessions total) and cultivated (20 accessions total) resources with high genetic similarity, which merits further investigation. This study lays a theoretical basis for the authentication, conservation, and genetic relationship analysis of mandarin germplasm resources, and provides a practical tool for standardizing mandarin variety identification.

Article
Computer Science and Mathematics
Computer Science

Aymé Escobar Díaz

,

Ricardo Rivadeneira

,

Walter Fuertes

,

Washington Loza

Abstract: Hate speech on social media reproduces norms of inequality and gender stereotypes, disproportionately affecting women. This study proposes a hybrid approach that integrates emotional tone classification with explicit hostility detection to strengthen preventive moderation. We constructed a corpus from three open datasets (1,236,371 records; 1,003,991 after ETL) and represented the text using TF-IDF and contextual RoBERTa embeddings. We trained individual models (RoBERTa fine-tuned, Random Forest, and XGBoost) and a stacking metamodel (Gradient Boosting) that combines their probabilities. On the test set, the ensemble outperformed the base classifiers, achieving accuracy of 0.93 in hate detection and 0.90 in emotion classification, with an AUC of 0.98 for emotion classification. We implemented a RESTful API and a web client to validate the moderation flow before publication, along with an administration panel for auditing. Performance tests showed viability under moderate loads and concurrency limitations starting at 300 users, associated with deployment via an Ngrok tunnel. In general, the results indicate that incorporating emotional tone analysis improves the model's ability to identify implicit hostility and offers a practical way to promote safer digital environments. The probabilistic results obtained by the ensemble model were subsequently analyzed using the Bayesian Calibration and Optimal Design under Asymmetric Risk (BACON-AR) framework, which serves as a mathematical post-hoc validation layer to optimize the decision threshold under unequal costs. This framework does not modify the trained architecture but adjusts the estimated probabilities and selects the threshold that minimizes the total expected risk. By combining TF-IDF and RoBERTa embeddings with a stacked metamodel, the ensemble's decision function was optimized via regularization, improving generalizability and the stability of predictions. The incorporation of the BACON-AR framework strengthened the system's probabilistic consistency, ensuring that final decisions were aligned with the actual consequences of errors under an asymmetric risk scheme.

Article
Engineering
Aerospace Engineering

Máté Keller

,

Daniel Aleksandrov

,

Valentijn De Smedt

,

Jurgen Vanhamel

Abstract: CubeSats are used as a platform in modern space missions due to their standardized form factor, reduced development cost, and shortened launch timelines. Earth observation, space weather monitoring and even re-entry applications make use of the CubeSat standard. Despite their advantages, CubeSats are constrained by limited onboard resources, with electrical power availability being one of the most critical bottlenecks. This work presents a dynamic, hybrid offline/online task scheduling and power management algorithm for a re-entry CubeSat, combining pre-computed schedules with real-time adaptation to changing flight conditions. The algorithm employs a heuristic-based approach, ranking tasks by parameters including priority, execution delay, duration, and power consumption. It adapts to varying flight conditions and system failures. In critical battery State of Charge (SoC) scenarios, only high-priority tasks above a defined threshold are executed, conserving power. A simulation suite was developed to evaluate performance under realistic mission profiles and stress tests with high loads and numerous tasks. Metrics included average and maximum task delay and average power consumption. Results show that appropriate heuristic weight selection can yield significant improvements in reliability and efficiency. The proposed algorithm offers a flexible, scalable solution for CubeSat power management, capable of maintaining operational reliability under dynamic conditions.

Article
Computer Science and Mathematics
Computer Science

R Karthick

Abstract: This paper introduces a novel Transformer-Driven Pipeline that seamlessly integrates acoustic hearing, automated speech transcription, and writing synthesis into a unified end-to-end framework powered by advanced transformer architectures. Beginning with raw acoustic inputs captured via microphones, the pipeline preprocesses audio signals into spectrogram representations, leveraging stacked transformer encoders with multi-head self-attention to extract contextualized phonetic and prosodic features. These features feed into a sequence-to-sequence transcription module, where cross-attention mechanisms align auditory patterns with linguistic tokens, achieving robust speech-to-text conversion even in noisy environments or with diverse accents. Extending beyond transcription, the system employs a generative decoder to synthesize structured written outputs, such as summaries, reports, or formatted notes, by refining transcripts through autoregressive language modelling while preserving semantic fidelity and stylistic nuances derived from the original speech. Experimental validation on benchmark datasets like LibriSpeech and Common Voice demonstrates superior performance, with word error rates reduced by up to 25% compared to RNN baselines and enhanced fluency in synthesis metrics like BLEU scores. The pipeline's parallelizable design ensures real-time efficiency, making it ideal for applications in assistive technologies, live captioning, and automated documentation. This work highlights transformer's versatility in bridging auditory perception and textual production, paving the way for scalable multimodal AI systems.

Article
Engineering
Bioengineering

Carlos Exequiel Garay

,

Gonzalo Nicolás Mansilla

,

Rossana Elena Madrid

,

Agustina González Colombres

,

Susana Josefina Jerez

Abstract: Telemedicine, driven by the Internet of Things (IoT) and next-generation mobile networks, is essential for managing cardiovascular diseases, where hypertension remains the primary risk factor. In preclinical research, rabbits are superior biological models compared to rodents due to their human-like lipid metabolism. However, conventional blood pressure monitoring in this species is hindered by significant limitations: existing systems are non-portable, lack real-time capabilities, and often necessitate terminal procedures (euthanasia). To address these challenges, this study presents a portable, minimally invasive monitoring system utilizing a pressure transducer in the central auricular artery. The device integrates IoT technology for digital signal processing and seamless wireless data transmission to cloud platforms. This development enables continuous, real-time hemodynamic tracking throughout the experimental period without requiring permanent tethering to desktop hardware. By reducing invasiveness and enhancing data mobility, this system provides a robust framework for the preclinical evaluation of antihypertensive agents and cardiovascular mechanisms, bridging the gap between edge computing and remote clinical diagnostics.

Concept Paper
Medicine and Pharmacology
Ophthalmology

Amr Ahmed

Abstract: Background: Age-related macular degeneration (AMD) represents the leading cause of irreversible vision loss in elderly populations globally. While metformin has emerged as a promising candidate for AMD prevention based on multiple observational studies, the causal relationship remains uncertain due to inherent limitations of observational research designs.Objective: This comprehensive review critically evaluates the current evidence base for metformin in AMD prevention and treatment, with particular emphasis on methodological approaches that address causal inference, including target trial emulation frameworks, propensity score methods, and emerging applications of causal artificial intelligence.Methods: We conducted a systematic review of recent literature (2019-2025) focusing on studies employing advanced causal inference methodologies. Particular attention was given to the largest meta-analysis to date (2.68 million participants) and studies utilizing target trial emulation, propensity score matching, instrumental variable analysis, and causal AI approaches.Results: Recent meta-analytic evidence demonstrates a statistically significant protective association (pooled OR = 0.86, 95% CI: 0.79–0.93, p < 0.001) between metformin use and AMD development across 18 observational studies. However, substantial heterogeneity (I² = 90%) and inherent biases in observational designs—including immortal time bias, disease latency bias, and confounding by indication—limit causal interpretation. Studies employing propensity score matching and dose-response analyses reveal protective effects primarily at low-to-moderate cumulative doses (270-600g over 2 years). Critically, no adequately powered randomized controlled trial has yet definitively established causality.Conclusions: While observational evidence suggests potential benefit, the causal effect of metformin on AMD prevention remains unproven. Rigorous application of target trial emulation frameworks, coupled with advanced causal AI methodologies, offers a pathway to strengthen causal inference from existing observational data. However, definitive evidence requires prospective randomized trials specifically designed to test metformin's efficacy in non-diabetic populations at risk for AMD.

Article
Engineering
Architecture, Building and Construction

Ghayth Tintawi

,

Khuloud Ali

Abstract: In recent years, artificial intelligence has been systematically integrated into public environmental decision-making. It increasingly influences risk classification, the distribution of resources, and the exercise of regulatory authority. While policy attention often focuses on predictive performance and ethical principles, less scrutiny has been directed toward the institutional conditions under which algorithmic outputs acquire decision relevance. This policy review addresses that gap by framing environmental artificial intelligence as decision-making infrastructure rather than as neutral analytical software. It introduces the concept of algorithmic sustainability, defined not as a technical property of algorithms but as a governance condition that aligns lifecycle environmental impacts, enforceable accountability, and procedural legitimacy. Drawing on international policy frameworks and regulatory developments, the review shows how current governance instruments insufficiently integrate lifecycle environmental footprints into decision justification. To operationalize algorithmic sustainability, this paper proposes environmental algorithmic impact assessment as a gatekeeping and renewal mechanism for artificial intelligence used in environmental governance. The review concludes that aligning algorithmic deployment with sustainability and the rule of law depends on institutional design choices made before and during system use rather than on technical optimization alone.

Article
Biology and Life Sciences
Food Science and Technology

Linda Dzadu

,

Qi'an Han

,

Sheng Yin

,

Manman Liu

,

Shiwen Han

,

Huilian Che

Abstract: Fish allergy, primarily driven by Parvalbumin (PV), is a global health concern with limited effective mitigation strategies. This study explored Maillard conjugation using chitosan (CS) and various saccharides to modify the structural, functional, and allergenic properties of turbot (Scophthalmus maximus) PV. Structural analyses: Sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), Western blotting (WB), Fourier transform infrared (FTIR) spectroscopy, and Circular dichroism (CD) confirmed the successful conjugation and significant alterations in secondary structure, including a loss of α-helical content and an increase in β-sheet/random coil fractions. Glycation markedly enhanced antioxidant activity, with total phenolic content (TPC) increasing up to 10.3-fold and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging reaching 74.5% in the CS-xylose-PV conjugate (CXTPV). Indirect Enzyme-linked immunosorbent assay (ELISA) showed significant (p < 0.05), sugar-dependent reductions in IgE-binding capacity (up to ~72% for CXTPV). Rat basophilic Leukemia-2H3 (RBL-2H3) cell line assays demonstrated suppressed β-hexosaminidase release (~75% reduction), decreased Interleukin-6 (IL-6) secretion, and potent inhibition of Interleukin-4 (IL-4) production, indicating attenuated allergenic potential and immunomodulatory effects. CXTPV exhibited the strongest overall performance. These results highlight CS-saccharide Maillard conjugation as an effective strategy developed for hypoallergenic marine-derived ingredients with enhanced bioactive properties.

Article
Chemistry and Materials Science
Nanotechnology

Raad Al-Kilabi

,

Abdulameer H. Ali

,

Hude Al-Allaq

,

Elias F. Muhammed

,

Sahib Alkulaibi

,

Adel Alkhayatt

,

Hussein Al-Shabani

,

Thmr Ihsan

,

Haider Al-Hello

Abstract: Polyaniline-cadmium sulfide-gold (PANI-CdS-Au) nanocomposites were synthesized with varying Au loadings (0.023, 0.046, 0.092)wt% to enhance antibacterial performance. Structural (FTIR, XRD) and morphological (FE-SEM) analyses confirmed successful formation, strong interactions among components, and homogeneous nanoparticle dispersion. UV–Vis spectra revealed gold surface plasmon resonance and polaronic transitions consistent with PANI emeraldine base. XRD results showed the expected wurtzite CdS and fcc Au phases. Agar well diffusion tests against Escherichia coli (Gram-negative) and Staphylococcus aureus (Gram-positive) demonstrated that the 0.092 wt% of Au composite produced the largest inhibition zones at 100 µg mL⁻¹ (E. coli: 36 mm; S. aureus: 24 mm), with the same trend at 25 µg mL⁻¹. These results position PANI-CdS-Au nanocomposites as promising antibacterial materials; additional cytotoxicity assays are recommended for biomedical translation.

Article
Biology and Life Sciences
Aquatic Science

Marina Paixão-Gil

,

Felippe Alexandre Daros

,

Mario Vinicius Condini

,

Maurício Hostim-Silva

Abstract: Otolith microchemistry was used to investigate habitat use and connectivity of the estuarine catfish Genidens genidens across three estuaries in southeastern Brazil. A total of 58 individuals were analyzed using laser ablation inductively coupled plasma mass spectrometry, focusing on strontium-to-calcium (Sr:Ca) and barium-to-calcium (Ba:Ca) ratios. Variations in elemental ratios along otolith transects allowed the reconstruction of individual ontogenetic trajectories along the estuarine–marine gradient. Most individuals exhibited combined use of estuarine and marine environments, while trajectories restricted to freshwater were rare. The complexity of chemical profiles increased with age, indicating more frequent habitat shifts throughout ontogeny. These patterns reveal high ecological plasticity and partial migration within populations of G. genidens. Strontium-to-calcium ratios were effective indicators of salinity-related habitat transitions, whereas Ba:Ca ratios provided complementary information associated with continental influence. Overall, this study demonstrates the applicability of otolith microchemistry to infer individual life-history pathways and highlights the role of estuaries as key habitats for feeding, growth, and recruitment in G. genidens.

Article
Physical Sciences
Astronomy and Astrophysics

Huang Hai

Abstract: General Relativity (GR) has long been confronted with a fragmentation dilemma regarding black hole singularities and galaxy rotation curves: the former requires undetectable higher-dimensional quantum gravity to circumvent infinite curvature, while the latter similarly relies on undetectable dark matter to provide additional gravitational force. In this paper, we abandon the hypothesis of undetectable entities and reveal that the two challenges may share an intrinsic geometric solution: the universal asymptotic behavior of mainstream dark matter halo models is equivalent to a logarithmically corrected gravitational potential \( \Phi(r)\sim-(\ln{r}+1)/r \), which originates from the self-response of the curvature divergence at the GR singularity (\( R^r_{trt}\propto r^{-3} \)) via Poisson integration. At the microscopic scale, the sign reversal of lnr generates a repulsive effect, thereby avoiding the singularity. The constructed logarithmically corrected Schwarzschild metric is rigorously solved via the Lambert W function, revealing a layered internal structure determined by the black hole mass M (with thickness ∝1/M), which realizes the holographic screen of the renormalization group flow under the AdS/CFT correspondence. On this basis, we present parameter-free a priori predictions for the black hole shadows of Sgr A* and M87* that are consistent with Event Horizon Telescope (EHT) observations, and provide rigid falsifiable predictions for unobserved black holes, especially the crucial discriminative prediction for NGC315. On the galactic scale, the logarithmic term enables the fitting of the rotation curves of the Milky Way, the Andromeda Galaxy, and NGC2974 without the need for additional gravity from dark matter. Meanwhile, the tidal acceleration difference in the Solar System (Δg∼10-18 m/s2) is far below the current experimental limit, ensuring the validity of the equivalence principle without the need for a screening mechanism. This work demonstrates that gravitational phenomena from black holes to galaxies are governed by the spacetime self-response triggered by the GR singularity. It further reveals that macroscopic gravitational systems may be “holographic projections” of quantum topological structures (quantum vortices). This framework thus pulls quantum gravity research from pure mathematical modeling back to the energy scales accessible to contemporary observations, and provides a new direction for thinking about the unification of General Relativity and quantum mechanics.

Article
Public Health and Healthcare
Public Health and Health Services

Adelowo Adefisayo Adewoyin

,

Olarinde Olaniran

,

Jospphine Kikelomo Ajayi

,

Olarenwaju Oluwayemisi Olaniran

,

Elizabeth Yetunde Amao

,

Ayorinde Ololade Arogundade

,

Sunday Akinola Lowo

Abstract: Background: Exclusive breastfeeding (EBF) is a critical public health intervention for improving maternal and child health outcomes. This study evaluated the knowledge, practices, and challenges regarding EBF among mothers in the Ife East Local Government Area (LGA), Osun State. Methodology: A cross-sectional survey was conducted among 200 respondents. Data were collected via structured questionnaires administered across various residential areas, including Ita Osa (10.5%) and Ifelodun (9.5%). Statistical analysis was performed to determine the relationship between geographic area and access to healthcare. Results: The majority of participants were aged 20–24 years (33.5%), married (79.5%), and of Yoruba ethnicity (80.5%). Approximately 49.0% held tertiary education qualifications. Access to medical facilities varied significantly by area (x2=32.971, p=0.002), with Ita Osa reporting the highest easy access (10.5%). Regarding knowledge, 48.5% of mothers believed EBF should last 3–6 months, while 40.5% correctly identified the 6-month standard. Healthcare providers were the primary source of EBF information (46.0%). The most recognized benefits included boosting the child's immune system (62.5%) and reducing the mother's risk of breast cancer (74.5%). However, significant barriers persist, notably inadequate nutrition supply (37.0%), pain/discomfort (28.0%), and the return to work (27.5%). Respondents identified emotional support (38.5%) and education (35.5%) as the most desired forms of assistance from family and providers. Conclusion: While there is a high level of awareness regarding the benefits of EBF in Ife East LGA, there remains a gap in precise knowledge regarding its recommended duration. Addressing physiological challenges like nutrition and structural barriers, such as workplace re-entry, is essential to improving EBF rates.

Article
Biology and Life Sciences
Biology and Biotechnology

Youssef Ahmedm

,

Ruotong Luan

Abstract: Human papillomavirus (HPV) E6/E7 oncoproteins perturb host gene regulatory networks, driving oncogenesis. Existing computational methods often struggle to provide interpretable, chain-of-thought mechanistic explanations for observed transcriptomic changes. To address this, we introduce OncoReasoner, a novel framework that integrates biological expression analysis with the advanced reasoning capabilities of large language models (LLMs) and graph neural networks (GNNs). OncoReasoner comprises an Expression Encoder for rich gene embeddings, a Bio-LLM Reasoning Module for context-aware mechanistic explanations, and a Graph Refinement Module leveraging GNNs and prior knowledge for network consistency. Evaluated on diverse datasets, including GEO and TCGA, our framework significantly outperforms traditional statistical methods, GNNs, and other LLM baselines across differential gene expression classification, regulatory network edge prediction, and particularly, functional pathway reasoning. OncoReasoner notably achieves high accuracy in pathway identification and receives excellent expert ratings for its mechanistic explanations, demonstrating its superior ability to provide deep, accurate, and highly interpretable biological insights. An ablation study confirms the critical contribution of each module, and human evaluation further validates the qualitative excellence of its mechanistic explanations, marking a substantial advancement in explainable AI for cancer research.

Article
Business, Economics and Management
Business and Management

Jonathan H. Westover

Abstract: Background: Psychological safety—the belief that one can speak up without fear of negative consequences—is fundamental to team learning and performance, yet controlled experimental research is constrained by practical and ethical limitations. This study validates large language model (LLM) agents as a methodological tool for simulating team psychological safety dynamics by comparing AI-simulated teams against human teams across identical experimental scenarios. We conducted parallel experiments with 5,280 AI teams (26,400 agent interactions across 5 LLM architectures) and 249 human teams (1,245 participants; final analytic sample: 247 teams, 1,235 participants after quality screening) using a 2×2 factorial design manipulating leader inclusiveness (High/Low) and error management culture (Learning/Blaming). Teams completed realistic work scenarios while we measured psychological safety perceptions, learning behaviors, team performance, and moderating effects of demographic diversity. A comprehensive validation framework assessed convergent validity (main effects, moderation patterns, mediation pathways), discriminant validity (falsification tests), and measurement properties. AI simulations demonstrated strong convergent validity for main effects: leader inclusiveness effect size (AI: d = 2.21, 95% CI [2.13, 2.29]; Human: d = 1.58, 95% CI [1.42, 1.74]), error culture effect (AI: d = 1.39, 95% CI [1.32, 1.46]; Human: d = 0.97, 95% CI [0.82, 1.12]). AI effects were consistently larger than human effects across all relationship types. Main effects showed calibration ratio = 1.42× (95% CI [1.37×, 1.49×]), with precision-weighted calibration across all 14 effect comparisons = 1.38× (95% CI [1.32×, 1.44×]). This systematic inflation requires effect size adjustment when extrapolating to human teams: multiply main effects by ≈0.70, correlations by ≈0.88, with type-specific calibration detailed for different relationship types.AI effects were consistently larger (mean ratio = 1.40×), suggesting a systematic calibration factor. Mediation pathways showed parallel structure (AI: 77.7% mediated, 95% CI [73.2%, 82.2%]; Human: 90.7%, 95% CI [83.8%, 97.6%]), with bootstrap difference test indicating proportions do not differ significantly (p = .182) despite narrowly non-overlapping individual confidence intervals. Moderator convergence varied: demographic composition effects showed lower pattern correlations (r = .43, 95% CI [.09, .68]) compared to main effects (r = .97, 95% CI [.89, .99]). Eight falsification tests confirmed discriminant validity: AI teams showed theoretically appropriate null effects in control scenarios (8/8 tests supported predictions after theoretical refinement). Cross-model consistency was high (ICC = .79, 95% CI [.73, .84]), with calibration factors stable across architectures (SD = 0.04), indicating systematic rather than model-specific inflation. GPT-4 and Claude-3.5 showed closest absolute alignment to human effect magnitudes. LLM-based simulations offer valid approximations of psychological safety dynamics for theory testing, with predictable calibration requirements (effect size multiplier ≈ 0.70). These tools enable hypothesis testing at scales and experimental control infeasible with human participants, though current limitations in capturing complex moderator interactions and precise effect magnitude warrant continued validation. This methodology significantly expands the experimental toolkit for team science research.

Article
Computer Science and Mathematics
Artificial Intelligence and Machine Learning

Seungun Park

,

Yunsik Son

Abstract: The application of quantum machine learning (QML) to security-relevant problems has attracted growing attention, yet its practical behavior in realistic workloads remains insufficiently characterized. This paper investigates the feasibility and limitations of variational quantum classifiers (VQCs) in a representative side-channel analysis (SCA) setting focused on distinguishing real from dummy power traces. A controlled benchmark framework is developed to examine training stability, sensitivity to key design parameters, and resource–performance trade-offs under realistic constraints. Hardware-relevant factors, including finite measurement budgets and device noise, are incorporated to approximate execution beyond idealized simulation and to quantify inference-time robustness. Experimental results indicate that VQCs can extract meaningful discriminative patterns from structured side-channel inputs, while robustness and performance depend on encoding choices, circuit depth, and measurement conditions. These findings provide an empirically grounded perspective on the applicability and limitations of QML in side-channel security and offer practical guidance for future research in this area.

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