We revisit Min-Mean-Cycle, the classical problem of finding a cycle in weighted directed graph with minimum mean weight. Despite an extensive algorithmic literature, previous work failed to achieve near-linear runtime number edges $m$. propose algorithm $\tilde{O}(m (W_{\max}/\epsilon)^2)$ for computing $\epsilon$ additive approximation on graphs polylogarithmic diameter and weights magnitude a...

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Introduction: Ureteropelvic junction obstruction (UPJO) is associated with inadequate urine drainage from renal pelvis into ureter. UPJO results from incomplete recanalization of proximal ureter during fetal period which finally leads to hydrostatic distention of renal pelvis and calyces. Diagnosis is based on clinical symptoms, ultrasound, and diuretic isotopic renogram. Various surgical metho...

conclusions the outside diameter/inside diameter ratio at the metaphyseal/diaphyseal junction of the distal radius on ap radiographs is suitable for use as a predictor of distal-radius bone density. further studies should be performed, and clinical utility evaluated. results the mean bmd was 0.559 (sd = 0.236) g / cm2. the mean outside diameter/inside diameter ratio was 1.24 (sd = 0.013); the r...

Introduction: Pulmonary hypertension has been associated with a significant increase in morbidity and mortality. The pulmonary artery diameter measurement from CT scan is routinely used to predict possible evidence of hypertension. However, no data available as reference for the normal range, especially Thai Population. primary purpose this study was determine main (MPA) ascending aorta (AAo) r...