Institution
Sakai Municipal Hospital
Recent research
- Health & MedicineOpen access
ABSTRACT Background Long‐term overall survival (OS) of gastric cancer stratified by the prospectively determined clinical stage remains unclear. Methods This is an ancillary study of JCOG1302A, a prospective observational study that evaluated the accuracy of clinical diagnosis of...
- AI & ComputingOpen access
Classification of Four-Dimensional Matrices via Complex-Type Representations
This study investigates the structural classification of real $4\times4$ matrices by analyzing all possible sign and conjugation patterns arising from their block decomposition. Starting from $1024$ potential configurations, algebraic consistencyconditions reduce the candidates t...
- AI & ComputingOpen access
Classification of Four-Dimensional Matrices via Complex-Type Representations
This study investigates the structural classification of real $4\times4$ matrices by analyzing all possible sign and conjugation patterns arising from their block decomposition. Starting from $1024$ potential configurations, algebraic consistencyconditions reduce the candidates t...
- Health & MedicineOpen access
Abstract Background There is currently no established chemotherapy regimen for early recurrence of pathological stage III gastric cancer (GC) following adjuvant chemotherapy with docetaxel plus S-1 (DS) after D2 gastrectomy. We aimed to evaluate the efficacy and safety of ramucir...
- AI & ComputingOpen access
Noncommutative Interconversion
Complex numbers provide a fundamental and harmonious algebraic framework for describing two-dimensional rotations. Their internal structure, consisting of a single phase and a single rotational degree of freedom, has supported remarkably stable behavior across analysis, geometry,...
- Health & MedicineOpen access
Age-dependent sex differences in acute kidney injury among patients with chronic kidney disease
Patients with chronic kidney disease (CKD) are susceptible to acute kidney injury (AKI), which worsens clinical prognosis. Sex differences in AKI incidence and subsequent kidney prognosis remain uncertain in CKD. This multicenter, retrospective cohort study analyzed outpatients w...
- AI & ComputingOpen access
This paper introduces a hierarchical number system with $2^n$ components,including real numbers, complex numbers, and tsuifukusosu (twin complex numbers), defined uniformly by a single recursive structure. We refer to this system as the Kaisofukusosu . A Kaisofukusosu is based on...
- Health & MedicineOpen access
Background/Aim: Nintedanib, an antifibrotic drug, is expected to slow the progression of interstitial lung diseases (ILDs). This study aimed to evaluate the usefulness of nintedanib for patients with idiopathic pulmonary fibrosis (IPF) and progressive pulmonary fibrosis (PPF) who...
- Health & MedicineOpen access
Abstract Once an esophago–airway fistula develops during chemoradiotherapy for cT4b esophageal cancer, further curative treatment is often precluded. We describe a robotic technique for closure of a large esophago–left main bronchial fistula using a pedicled autologous pericardia...
- AI & ComputingOpen access
This paper develops a unified algebraic framework for kaiso complex numbers, a discrete multi-layered structure (kaiso) in which each layer (kai) contains a single digit carrying an independent sign bit. The central operation is the digit-wise sign inversion, governed by two XOR-...