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Advanced design and optimization of novel Fibonacci switched-capacitor converters for ultra-high-efficiency DC-DC power conversion
No full textThe study explores the design and analysis of two DC-DC converter configurations integrated with solar photovoltaic (PV) renewable energy systems, comparing the conventional boost converter with a novel Fibonacci switched-capacitor (FSC) boost converter. Advanced Maximum Power Point Tracking (MPPT) algorithms, including Perturb and Observe (P&O), Incremental Conductance (INC), Genetic Algorithm (GA), and Particle Swarm Optimization (PSO), are paired with both converters to optimize energy extraction from solar PV systems. Simulation results reveal that both converter topologies, when combined with the appropriate MPPT algorithms, effectively maximize power output from the solar PV system.The FSC converter demonstrates exceptional performance, particularly in terms of current handling and voltage regulations. Featuring a modular arrangement of capacitors and MOSFETs synchronized by the CD4007 IC, the FSC converter adapts efficiently to dynamic load changes and varying irradiance conditions, resulting in enhanced current control, minimized output voltage fluctuations, and improved voltage regulation. Integrated with the GA-MPPT algorithm, the FSC converter achieves a significant boost in output current, reaching up to 70 A compared to just 10 A for the conventional boost converter. Furthermore, the FSC design excels in reducing electromagnetic interference (EMI) and simplifies thermal management, making it an ideal solution for high-efficiency applications. Both converter topologies are validated through MATLAB/Simulink simulations and hardware implementations. The hardware prototype, incorporating IRF540 MOSFETs and 22 μF capacitors, shows the scalability, compactness, and reliability of the FSC converter. The findings highlight the potential of the FSC converter in renewable energy systems, automotive applications, portable electronics, and other high-efficiency, compact systems. It positions the FSC topology as a promising alternative to traditional inductor-based designs, offering an innovative solution to address performance limitations in renewable energy conversion
Water-Soluble Contrast Challenge in the Management of Pediatric Adhesive Small Bowel Obstruction: A Systematic Review
No full textInnovating Team Dynamics: Implementation of Bespoke Team Charters within Medical Student Dissection Teams
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Signals in the Storm: Predicting Market Shifts with VIX, CVI, MOVE, and BBDXY Indices
No full textThis study examines the ability of volatility indices to predict asset returns across equity, bond, cryptocurrency, and currency markets. Using daily data for the VIX, CVI, MOVE, and BBDXY indices, the analysis finds that each index offers meaningful return predictability both within and across markets. Notably, VIX Change Lagged forecasts equity returns, while CVI and MOVE demonstrate significance in multiple markets, and BBDXY Change Lagged provides strong cross-asset signals. The predictive power increases when the indices are combined, with adjusted R² values of 5.16% for SPY and 2.71% for AGG. These results highlight the value of volatility indices as forward-looking market indicators.This study examines the ability of volatility indices to predict asset returns across equity, bond, cryptocurrency, and currency markets. Using daily data for the VIX, CVI, MOVE, and BBDXY indices, the analysis finds that each index offers meaningful return predictability both within and across markets. Notably, VIX Change Lagged forecasts equity returns, while CVI and MOVE demonstrate significance in multiple markets, and BBDXY Change Lagged provides strong cross-asset signals. The predictive power increases when the indices are combined, with adjusted R² values of 5.16% for SPY and 2.71% for AGG. These results highlight the value of volatility indices as forward-looking market indicators.The Honors College, Oakland Universit
Rising Sun, Failing Democracy: Japan's Inability for Change and What International Institutions Can Do About It
No full textJapan is often referred to as a “model democracy” within the Asian continent. This thinking reduces Japanese politics to an overly simple level, and has the unfortunate consequence of inadvertently discouraging full-bodied critiques of Japanese democracy. Through a qualitative analysis of three separate case studies focusing on Japanese economy, culture and criminal justice, it is shown that Japanese politics becomes less pressured by that of the so-called “one-and-a-half” party system that political scientists have suggested in recent years and more by the fact that the electorate within Japan struggle to challenge what is perceived as the “status quo”. A thorough analysis of this status quo is conducted, and suggestions for both Japanese policy advocates and international organizations are presented