Digital Commons Network^™

Senior Recital: Toby Tate, Composition And Guitar, Department Of Music, University Of Richmond

Music Department Concert Programs

No abstract provided.

An Occupation-Based Support Group For Underserved Adults Living With Lymphedema, Amivi Amega

Student Capstone Papers

Lymphedema is a chronic condition that can significantly impact physical function, psychosocial well-being, and participation in meaningful occupations. Although traditional management primarily focuses on physical symptom reduction, gaps remain in addressing long-term participation and quality of life, particularly among underserved populations. The purpose of this capstone project was to develop an occupation-based support group manual designed to support both the physical and psychosocial needs of adults living with lymphedema.

This project was informed by a needs assessment and expert feedback from Certified Lymphedema Therapists, enhancing clinical relevance and applicability. The manual integrates principles from the Model of Human Occupation and …

Senior Recital: Andrew Kowal, Piano, Department Of Music, University Of Richmond

Music Department Concert Programs

No abstract provided.

Pediatric Sleep: The Priority We Cannot Keep Snoozing On, Jennifer Q. Tuazon, Lee Ann Hoffman, Amanda M. Buono

Spring 2026 OTD Capstone Symposium

This capstone poster presents the development of online learning modules designed to support pediatric occupational therapists in addressing sleep as a foundational occupation. The project provides practical, evidence-based resources to help clinicians recognize sleep-related concerns, implement targeted strategies, and determine when referrals may be appropriate. The goal is to enhance clinical confidence while supporting participation, occupational performance, and quality of life for children and their families.

Analysis Of Soda Production Processes In Ammonia-Soda Production, Nadirbek Rustambekovich Yusupbekov Professor, Djalolitdin Paxritdinovich Mukhitdinov Professor, Fatima Faxritdinovna Iskhakova

Technical science and innovation

This paper provides a comprehensive analysis of the fundamental principles of the classical Solvay process, a key component in the industrial production of soda ash. It is noted that despite its widespread use and technological maturity, the process has a number of significant technological, energy, and environmental limitations associated with high raw material and energy consumption, the generation of significant industrial waste, and CO₂ emissions. The need to modernize the traditional production process to improve efficiency, resource conservation, and environmental sustainability is substantiated. The review systematically summarizes current approaches to process improvement, including modified versions of the Solvay process, the …

Analysis And Study Of Telemetry Systems For Directional And Horizontal Well Drilling, Jahongir Abdiganiyev Erkin Ugli, Sherali Halloqovich Umedov

Technical science and innovation

The article discusses the issues of reducing non-productive drilling time during the construction of directional and horizontal wells. The main focus is on the analysis of drilling conditions in complex geological and high-temperature environments. Particular attention is paid to drilling conditions in the territory of the Republic of Uzbekistan, with a specific study of data from the Boysun and Ustyurt regions. An analysis and study of the performance of telemetry systems available on the market, as well as their main technical characteristics, have been conducted. Key factors affecting the accuracy of wellbore trajectory measurements under various geological and technical conditions …

Mathematical Modelling And Optimisation Of The Reactor For The Esterification Process Of Safflower Oil With N-Butyl Alcohol, Sadritdin Makhamatdinovich Turabdjanov Academician, Hasan Sadriddin Ugli Fozilov, Ozoda Bakhronovna Axmedova, Sadriddin Fayzullayevich Fozilov

Technical science and innovation

This study addresses the mathematical modelling and optimisation of a reactor for the esterification of safflower oil with n-butyl alcohol. To improve process controllability and reduce the need for numerous pilot-scale trials, an ideal-mixing continuous stirred-tank reactor (CSTR) model was adopted. Incorporating reaction kinetics, the effect of contact time on the relative viscosity of the product mixture was analysed. The modelling results indicate that achieving an acceptable degree of feedstock conversion is difficult when a single ideal-mixing reactor is used. Therefore, a CSTR cascade was proposed, and the configuration with N = 2 reactors was selected as the most appropriate …

Manufacturing Of Functional Surface Coatings In The Automotive Industry, Gulirano Saidakhmedova

Technical science and innovation

The development of environmentally sustainable technologies for material processing represents one of the most pressing scientific and technical challenges in modern industrial production. This issue is particularly relevant to the automotive industry, where growing demands for energy efficiency, durability, and environmental safety necessitate the adoption of advanced manufacturing methods. Special attention is given to developing vacuum-based, import-substituting equipment and technologies for producing functional coatings from composite materials with predefined physical, mechanical, and optical properties, including reflective and protective characteristics. Current requirements for mechanical engineering products and production technologies drive the need for innovative approaches to material processing and specialized technical …

Life Skills For Individuals In A Juvenile Detention Center, Carrington Brown

Student Capstone Papers

This capstone project involved the development, implementation, and evaluation of a life skills program for justice-involved youth in a juvenile detention setting. Guided by a needs assessment, the program targeted financial literacy, job readiness, professionalism, and soft skills through structured sessions incorporating education, interactive activities, and group discussion. Findings from pre- and post-surveys and qualitative feedback indicated improved knowledge, confidence, and readiness for community reintegration, supporting the value of rehabilitative, occupation-based programming.

Juror Contact In The Digital Age: The Linkedin Problem, Drew Thornley

Duke Law & Technology Review

This Article examines an evolving dispute in professional responsibility: whether a lawyer makes a prohibited communication when viewing a juror’s LinkedIn account. When one LinkedIn user views another’s profile, the platform automatically notifies the profile owner and may include the viewer’s identity. Ethics rules are currently divided on whether or not this notification would count as a prohibited juror communication. On one hand, the ABA and some state bar associations explicitly allow attorneys to view social-media profiles of jurors even when the lawyer’s identity is revealed. On the other hand, some bar associations and courts believe these automatic notifications violate …

Percussion Ensemble: April 12, 2026, David Collier, Ben Stiers

School of Music Programs

This is the one hundred and fifty-fifth program of the 2025-2-26 season.

April 12, 2026

Sunday Evening

7:00 p.m.

Junior Recital: Parker, Flute; April 12, 2026, Melanie Parker, Lu Witzig

School of Music Programs

This is the one hundred and forty-nineth program of the 2025-2026.

Kemp Recital Hall

April 12, 2026

Saturday

Noon

Senior Recital: Kenne, Clarinet; April 12, 2026, Ben Keene, Momoko Gresham

School of Music Programs

This is the one hundred and fifty-sixth program of the 2025-2026 season.

Kemp Recital Hall

April 12, 2026

Sunday Afternoon

8:30 p.m.

Junior Recital: Adrowski, Flute; April 12, 2026, Alexandra Adrowski, Lu Witzig

School of Music Programs

This is the one hundred and fifty-first program of the 2025-2026 season.

Kemp Recital Hall

April 12, 2026

Sunday Afternoon

2:30 p.m.

Senior Recital: Michael Hammon, Trombone; April 12, 2026, Michael Hammon, Lu Witzig

School of Music Programs

This is the one hundred and fifty-second program of the 2025-2026 season.

Kemp Recital Hall

April 12, 2026

Sunday Afternoon

4:00 p.m.

Junior Recital: Wolz, Viola; April 12, 2026, Val Wolz, Zeph Mussman, Grace Eom

School of Music Programs

This is the one hundred and fifty-third program of the 2025-2026 season.

Kemp Recital Hall

April 12, 2026

Sunday Afternoon

5:30 p.m.

Graduate Lecture Recital: Tseng, Violin; April 12, 2026, Linting Tina Tseng, Lu Witzig

School of Music Programs

This is the one hundred and fifty-fourth program of the 2025-2026 season.

Kemp Recital Hall

April 12, 2026

Sunday Evening

8:00 p.m.

Disproportionate Influence: Rethinking Control In American Corporate Governance, Dhruv Aggarwal, Ofer Eldar

Northwestern University Law Review

Corporate law has undergone a gradual transformation. Founding chief executive officers (“founder-CEOs”) and activist hedge funds increasingly dominate leading American corporations despite owning well short of a majority of shares. Founder-CEOs, through personal brands or dual-class voting structures, control firms despite having minority stakes; activist hedge funds, with single-digit holdings, press for major governance changes. We argue that these two types of shareholders, often treated as opposites, both dominate corporations through disproportionate influence rather than majority ownership. We describe these investors who dictate corporate policy through disproportionate influence as high-influence shareholders.

Delaware’s doctrinal response to high-influence shareholders has been inconsistent, …

Relationships Between The Parameters Of The Vegetable Oil Refining Process And Energy Consumption, Umidjon Abdimajitovich Ruziev, Marufjon Kobuljonovich Shodiev

Technical science and innovation

Vegetable oil refining is a multi-stage thermochemical process that is closely related to energy consumption, process parameters, product quality, and food safety requirements. Despite the extensive scientific literature on oil quality and pollutant formation, the quantitative relationship between purification parameters and relative energy consumption has not been sufficiently studied. In this work, a systematic analysis and engineering synthesis were carried out based on existing studies. According to the analysis results, the deodorization process accounts for 52–56% of the total thermal energy consumption, with a relative value ranging from 160 to 380 kJ/kg, depending on the enterprise's capacity and heat utilization …

Impact Of Compositing Method Choice On Spectral Fidelity In Semi-Arid Mining Landscapes, Ruslan Nailevich Khadzhaev, Dilbarkhon Shamuradovna Fazilova

Technical science and innovation

This study examines the choice of satellite image compositing method for Landsat 8/9 (Collection 2 Level-2) imagery to calculate the Normalised Difference Vegetation Index (NDVI). This paper compares the methods used to create median and medoid composites for the Angren open pit coal mine. The 'synthetic' nature of the composites is quantified based on a spectral consistency metric. This involves assessing the equivalence of median and medoid values, and analysing the sensitivity of NDVI to the compositing method across varying surface types. A strongly right-skewed distribution of surface reflectance values was found, covering 82.8% of the pixels, mostly in areas …

Mapping Of Petroleum-Prospective Structures In The Jurassic Complex Of The Western Aral Uplift Based On Seismic Attributes, Yuliya Leonidovna Salaydinova, Marina Georgievna Yuldasheva

Technical science and innovation

To solve the problems of identifying and mapping prospective structures, comprehensive analysis of 3D seismic attributes is widely used at the present stage of geological research; it was applied to assess the petroleum potential of the Jurassic rock complex in the Aral Sea offshore area of the Ustyurt region. The study integrates structural mapping on the tops of Permo-Triassic and Jurassic horizons, attribute volumes (Variance/Coherence, Sweetness, root-mean-square (RMS) amplitude, Envelope) and generalized spectral decomposition (GSD, 19-41 Hz), combined with well-log and well-test data from the Western Aral, Meros, Dengiz and Karakum areas. Variance attributes were used to delineate fault zones …

Theoretical And Practical Foundations Of Healthcare System Digitalization, Sanjarbek Bekturdiev Sharifboyevich Phd, Muxlisa G‘Ulom Qizi G‘Ofurova

Technical science and innovation

The digital transformation of healthcare represents a key direction in improving the accessibility, quality, and efficiency of medical services. This study examines the main components of eHealth, including telemedicine, electronic health records, cloud technologies, and mobile applications, as well as the role of international organizations in promoting national digital health strategies. Particular attention is given to the current state of digital healthcare in the Republic of Uzbekistan, where significant progress has been made in developing infrastructure and implementing information systems, although challenges related to integration, standardization, and regulatory support remain. The work identifies the main trends in the development of …

Adaptive Multi-Stage Fuzzy Logic Approach With Dynamic Weight Adjustment For Robust Power Transformer Diagnostics, Dilafruz Rustamovna Abdullabekova, Odiljon Muhammadjonovich Kutbidinov

Technical science and innovation

An adaptive multi-level fuzzy logic framework with dynamic weight adjustment for power transformer fault diagnosis and health index assessment was proposed in this study. A comprehensive analysis of existing transformer diagnostic approaches was performed, and their limitations related to static weighting schemes and uncertainty handling were identified. A hierarchical fuzzy inference structure was introduced, integrating multi-source diagnostic data, including dissolved gas analysis, transformer oil quality indicators, thermal parameters, and electrical measurements. At the first level, individual fuzzy subsystems were developed to evaluate partial condition indices associated with insulation degradation, oil aging, and thermal–electrical stress. At the second level, a global …

Development Of New Methods For Calculating Pressure And Energy Losses For Pumping Station Water Intakes, Faxriddin Jaylovovich Nosirov, Oleg Yakovlevich Glovatsky, Jurabek Abdyrahmon O'G'Li Urolov, Abduqodirkhon Samatkhonovich Abdullakhaev, Anvar Mamur Ugli Uzokov

Technical science and innovation

The aim of this study is to improve the efficiency of water resource management methods. Improvements to the water intake of the Karshi Main Canal are considered using calculations of pressure losses at the entry and exit of liquid into the flow, which differ from pressure losses in a stationary medium. The article considers some of the methods for using renewable energy sources, where the change in gravitational potential energy does not depend on the way of using energy and the operating scheme is a gravitational energy pump. The implementation of control and monitoring systems is necessary to ensure optimal …

Studying The Performance Of Photovoltaic Installations In The Pvsyst Software Package, Zukha Islamovna Juraeva, Isroil Abriyevich Yuldoshev I.A.Y., Islom Rakhmatovich Juraev

Technical science and innovation

This article simulates the operation of photovoltaic installations consisting of photovoltaic panels of crystalline and thin-film technologies. The calculations were performed in the PVSyst software package 7.4.8 version. In the calculations, the input parameters were environmental factors, the angle of inclination of the panels to the horizon. In calculating the values of the solar radiation flux density, the program selects the METEONORM climate database in accordance with the geographical area of the Tashkent city. The tilt angles of the photovoltaic panels of the installation were set manually by selecting specific values of the characteristic tilt angles in the range from …

Modern Promising Directions For The Development Of Alternating Current Converters, Shukhrat Badretdinovich Umarov, Ubaydullo Abdushukur Ugli Boqijonov

Technical science and innovation

The relevance of this work is explained by the presentation of modern trends in the development of powerful AC converters, which are widely used in various industrial processes, agriculture, and other sectors. Today, the most widely used method for creating powerful AC converters is the use of double energy conversion systems (DECS). The article shows the electrical diagram and functional tasks of the DECS system, as well as the technical and schematic capabilities of the pulse width modulation (PWM) inverter.  It highlights the importance of effectively using independent (autonomous) filters to improve the hybrid and matrix structure, as well as …

Analysis Of Automatic Regulation Based On The Dynamic Indicators Of The Working Body For Cleaning Channels And Ditches, Nasiba Siraj Amirbayova

Technical science and innovation

Today, the comprehensive development of road infrastructure and agriculture directly requires the reconstruction and effective use of systems intended for irrigation and protection of road surfaces. The goal of agricultural development has made it necessary to increase attention to this area. This also reveals the correct use and operation of existing melioration irrigation systems as an important problem. This is mainly one of the issues of correct operation of road infrastructure. It is known that the majority of agricultural products are produced in areas where irrigation systems are widely developed. On the other hand, the use of collector-drainage networks, cleaning …

Refinement Of Wind Speed Estimation At Turbine Hub Height Using Satellite Data And Regression Analysis Under Complex Terrain Conditions, Isroil Abriyevich Yuldoshev, Tulqin Rustamovich Jamolov, Sa'dullo Sayfiddin Ugli Fazliddinov, Jumanazar Farhodjon OʻGʻL Abdurashidov

Technical science and innovation

Reliable assessment of wind energy potential in regions characterized by complex terrain is often constrained by the limited availability of ground-based meteorological measurements. This study proposes an improved regression-based approach for refining wind speed estimates at the wind turbine hub height of 65 m using satellite-derived data from the NASA POWER database combined with a logarithmic vertical wind profile. The proposed methodology is validated using real operational data from a 750 kW wind power plant located in the mountainous Bostanlyk district of Uzbekistan for the period 2018–2021. The regression analysis demonstrates a strong linear relationship between the extrapolated wind speed …

Design Of Virtual Impedance Controller For Parallel-Connected Converters In A Microgrid, Manyanda Makoye, Francis Mwasilu, Peter M. Makolo, Jackson Justo

Tanzania Journal of Science

This paper addresses the significant challenge of inaccurate power sharing among Distributed Generators (DGs) in islanded microgrids, which is primarily caused by mismatched feeder and line impedances. Conventional decentralized control solutions often fail to ensure accurate power sharing, especially when line impedances are resistive. To overcome this, the paper proposes a robust, coordinated Virtual Impedance Control (VIC) strategy for DGs. This method implements fixed virtual resistance and virtual inductance to standardize the output impedance characteristics of parallel-connected inverters, thereby minimizing impedance discrepancies and enhancing system stability through increased damping. The theoretical analysis and design of the VIC were validated through …

Elemental And Mineralogical Characterization Of Permo-Carboniferous Coal In The Ngaka Coalfield, Southwest Tanzania: Implications For Coal Quality Variation, John W. Gama, Justina J. Saroni, Remigius L. Gama

Tanzania Journal of Science

Coal from heterolithic seams exhibits distinct chemical characteristics due to interbedded non-coal beds, which influence its quality and usability. Despite extensive research in these settings, the elemental and mineralogical characteristics of the heterolithic sequences of the Mchuchuma Formation (K2) in the Ngaka Coalfield remain poorly documented. This study provides the first detailed assessment of K2 seams across five active mine sites. Eleven representative samples were analyzed using proximate, elemental, and mineralogical techniques, supported by Pearson correlation, binary analysis, and Principal Component Analysis. Proximate analysis revealed that ash content varies across mine sites, with values ranging from 9.17 to 25.03%, volatile …