Journal of Progress in Engineering and Physical Science

Selleri Theory Not Equivalent to the Special Theory of Relativity and a Related Note on H.P. Robertson 1949 Paper

2025-12-30T08:17:27+00:00

In the present paper, I dispel the belief that the transformation developed by F. Selleri is equivalent to the Lorentz transformation, thus dispelling the misconception that his alternative theory is equivalent to Einstein’s special theory of relativity. In the current paper I present an argument that has not been shown before aimed at settling the dispute. I demonstrate that the Selleri transformation is not equivalent to the Lorentz transformation by reasons of predicting different results for relativistic aberration.

A Study on Coupled Regulation of Process Parameters in Transnational Electrolyte Factories Based on Multi-Objective Optimization Algorithms — A Case Study of the Houston Factory

2025-12-30T08:20:43+00:00

Transnational electrolyte factories face intractable challenges, including divergent regional environmental regulations, high process adaptation costs, and the intricate trade-off among production capacity, energy consumption, and volatile organic compound (VOC) emissions. Taking a 200,000-ton-per-year electrolyte factory in Houston as the research object, this study proposes a novel multi-objective optimization model embedded with regional compliance factors and develops an improved Non-dominated Sorting Genetic Algorithm III (NSGA-III) for the coupled regulation of key process parameters (reaction temperature, stirring rate, vacuum degree, and reflux ratio). Systematic validation via Aspen Plus full-process simulation, ANSYS Fluent flow field optimization, and industrial-scale empirical tests shows that the optimized parameter scheme reduces unit product energy consumption by 22.7%, cuts VOC emissions to 0.026 kg/h (complying with both US EPA and EU REACH standards), and boosts production capacity by 15.2%, with a model prediction error ≤3.5%. A standardized operating procedure (SOP) for transnational process adaptation is formulated, shortening compliance audit preparation time from 48 hours to 15 minutes. This research fills the technical gap in synergistic optimization of compliance and efficiency for transnational electrolyte production, providing a replicable theoretical and engineering paradigm for global electrolyte enterprises’ overseas layout, with substantial technological innovation value and economic-environmental benefits.

The Impact of “Data-Driven Hierarchical Operation” on ARPU Value for Cross-Border E-Commerce Warehousing Clients

2026-01-19T08:59:22+00:00

This study takes WuXpress Warehousing LLC, a cross-border e-commerce warehousing enterprise registered in Texas, USA, as the research object. Based on Customer Value Management (CVM) and data-driven decision-making theory, combined with the operational characteristics and practical experience of the cross-border e-commerce warehousing industry, a “Data-Driven Hierarchical Operation Model for Cross-Border E-Commerce Warehousing Clients” is constructed. The model integrates three-dimensional core customer data of “warehousing scale – operational efficiency – development potential” through MySQL technology, establishes objective and quantitative customer stratification standards, and classifies customers into three levels: high-value (Class A), ordinary-value (Class B), and potential-value (Class C). Corresponding differentiated service systems and stepped conversion paths are designed for each level. The research confirms that data-driven hierarchical operation effectively improves the retention rate of high-value customers and the overall ARPU value by accurately matching customer value with service resources. After WuXpress implemented the model, the ARPU value of high-value customers reached $25,000, 3.1 times that of ordinary customers, and the churn rate of high-value customers dropped from the industry average of 35% to less than 10%. Adopting a lightweight implementation path of MySQL + Excel, the model does not require heavy technical investment. It not only helps WuXpress build a differentiated competitive advantage amid the 10% stratification capability gap in the industry and avoid revenue losses caused by the high industry churn rate but also provides a feasible customer operation solution for small and medium-sized cross-border e-commerce warehousing enterprises in the USA, promoting the industry’s transformation from scale-oriented competition to value-oriented competition.

A Systematic Optimization Analysis of N-Linked Glycans on Porous Graphitic Carbon (PGC) at Different Column Temperatures

2026-01-23T02:13:58+00:00

Protein glycosylation is a post-translational modification where glycans are covalently attached to proteins. N-linked glycosylation is a type of protein glycosylation which involves the covalent attachment of an oligosaccharide to an asparagine residue within a polypeptide chain. Glycans are involved in a number of biological processes such as cell-cell interactions, cell adhesion, immune recognition, and protein folding and function. However, aberrant glycosylation is mostly associated with many types of diseases such as cancer, autoimmune disorders and many other diseases. Therefore, understanding the variations in glycomics profiles on protein has become very crucial for molecular testing. Despite the advance in LC-MS/MS for structural diverse N-glycan analysis, the separation and analysis of N-linked glycans are analytically challenging due to the molecule large number of possible isomeric conformations, difficult to ionize and contain a variety of complex composition, branching and linkage isomers. Even though, many reversed PGC phases have been used for the separation of N-glycans, especially in the context of LC-MS techniques but is still difficult to implement in a robust and reproducible manner. Herein, systematic optimization analysis of N-linked glycans in porous graphitic carbon (PGC) at different column temperatures was investigated. Underivatized tri-sialylated species and bi-sialylated species N-glycans derived from bovine fetuin and human transferrin respectively were utilized to optimize at different temperature. The study suggests that by optimizing at higher temperature, PGC columns can significantly enhance the resolution of complex glycan mixtures, offering powerful tools for in-depth glycomics optimization analysis.