Karshi State University

DNA barcoding reveals genetic divergence and phylogenetic relationships of Scymnus species (Coleoptera: Coccinellidae) from Uzbekistan

Ladybird beetles of the genus Scymnus (Coleoptera: Coccinellidae) are key predators in agroecosystems, but species-level identification remains challenging due to high morphological similarity among closely related taxa. Molecular data for Central Asian populations are scarce, li...

Critical Markov Branching-Immigration Systems: Complete Classification of the State Space and Exact Rates of Convergence

We study a critical homogeneous continuous-time Markov branching-immigration system whose offspring and immigration generating functions regularly vary at point 1 of orders 1+ν and δ with ν,δ∈(0,1]. The slowly varying factors are controlled through their index functions, which ca...

ECONOMETRIC ASSESSMENT AND FORECASTING OF THE ROLE OF INDUSTRIAL ZONES, TECHNOLOGY PARKS AND CLUSTERS IN REGIONAL ECONOMIC DEVELOPMENT IN KASHKADARYA REGION

Industrial zones, technology parks, and clusters are increasingly recognized as important instruments of place-based regional development, particularly through their potential to attract investment, stimulate industrial diversification, generate employment, promote innovation, an...

AN ECONOMETRIC ASSESSMENT OF THE IMPACT OF REGIONAL INVESTMENT POLICY ON POVERTY REDUCTION

This study examines the impact of regional investment policy on poverty reduction using an econometric approach. The research focuses on the extent to which investment activity contributes to increasing household income, expanding employment opportunities, stimulating economic gr...

AN ECONOMETRIC ASSESSMENT OF THE IMPACT OF REGIONAL INVESTMENT POLICY ON POVERTY REDUCTION

This study examines the impact of regional investment policy on poverty reduction using an econometric approach. The research focuses on the extent to which investment activity contributes to increasing household income, expanding employment opportunities, stimulating economic gr...

Positive Solutions of a Nonlinear System Characterizing Gibbs Measures in Hard-Core SOS Models on Cayley Trees

We study the $$m$$ -state $$p$$ -Solid-on-Solid model with $$p = \infty$$ on Cayley trees of order $$k \geq 2$$ . We derive a system of functional equations whose solutions correspond to (splitting) Gibbs measures for the model. For cases $$m=2,3$$ we identify conditions under wh...

Advanced cathode engineering in sodium-ion batteries: doping, phase, and interface modulation from layer oxides to polyanionics

Abstract Sodium-ion batteries (SIBs) have attracted significant attention as viable alternatives to lithium-ion batteries; however, their practical advancement remains limited by cathode-related challenges, including sluggish Na + diffusion, structural degradation, and rapid capa...

Predicting BOD5 Removal Efficiency in a Constructed Wetland from Satellite and Meteorological Data Using Interpretable Machine Learning

Constructed wetlands (CWs) offer a low-cost and sustainable option for wastewater treatment, but their performance is commonly assessed through infrequent, periodic field sampling that yields temporally sparse records. This study evaluated whether five-day biochemical oxygen dema...

Investigation of Stress Redistribution Within the Host Rock Mass During Underground Mining Operations

The article presents the results of a systematic investigation of stress redistribution and the formation of stress concentration and relaxation zones in the rock mass surrounding underground mine workings under the influence of mining operations. The study was conducted consider...

Altitudinal patterns of soil nematode community diversity and functional structure in the Boysun Mountains, Uzbekistan

Mountain ecosystems provide natural gradients for investigating biodiversity responses to environmental variation. This study examined the effects of altitude on the taxonomic diversity, trophic structure, and functional composition of soil nematode communities in the Boysun Moun...

Altitudinal patterns of soil nematode community diversity and functional structure in the Boysun Mountains, Uzbekistan

Mountain ecosystems provide natural gradients for investigating biodiversity responses to environmental variation. This study examined the effects of altitude on the taxonomic diversity, trophic structure, and functional composition of soil nematode communities in the Boysun Moun...

Independent Engineering Transfer After Traceable Generative-AI-Assisted Learning: A Six-University Controlled Trial with Deterministic Cluster Allocation in Agricultural Engineering Education

Generative artificial intelligence (GenAI) can support engineering problem solving, but whether AI-assisted practice transfers to independent performance after the tool is removed remains unclear. This multicentre controlled trial evaluated a traceable five-stage GenAI-assisted l...

Selective transport of plasma-derived reactive species through the plant aquaporin channels: a molecular dynamics study

Abstract The selective permeability of reactive oxygen and nitrogen species (RONS), generated by cold atmospheric plasma (CAP), through plant aquaporins was investigated to identify plasma-derived species capable of intracellular delivery. Using atomistic molecular dynamics and e...

Integrated Multi-Row Onion Production Under Contrasting Seasonal Conditions: Seeder Optimization, Nutrient Management, Crop Protection, and EIQ-Adjusted Sustainability

Reliable establishment of direct-seeded onion requires coordinated control of sowing geometry, nutrient supply, crop protection, and resource use. This study combined Hartley-4 optimization of a four-section, multi-row ridge seeder with a two-year randomized complete block experi...