BACKGROUND Kernel smoothing method is a non-parametric or graphical method for statistical estimation. In the present study was used a kernel smoothing method for finding the death hazard rates of patients with acute myocardial infarction. METHODS By employing non-parametric regression methods, the curve estimation, may have some complexity. In this article, four indices of Epanechnikov, Biqu...

The nonparametric estimation for the density and hazard rate functions for right-censored data using the kernel smoothing techniques is considered. The “classical” fixed symmetric kernel type estimator of these functions performs well in the interior region, but it suffers from the problem of bias in the boundary region. Here, we propose new estimators based on the gamma kernels for the density...

A fire hazard assessment was conducted on private, developed lots in South Lake Tahoe, a high fire hazard urban-wildland interface community in Northern California. Fire hazard was assessed in terms of the minimum standards set forth in the National Fire Protection Association’s (NFPA) Standard 299 and homeowner practices such as compliance with the fire safety law PRC 4291, construction materi...

Purpose – This study aims to focus on asset management of large-scale information systems supporting infrastructures and especially seeks to address a methodology of their statistical deterioration prediction based on their historical inspection data. Information systems are composed of many devices. Deterioration process i.e. wear-out failure generation process of those devices is formulated b...

OBJECTIVE To investigate the combined effects on adult mortality of overweight and smoking in late adolescence. DESIGN Record linkage study with Cox proportional hazard ratios adjusted for muscle strength, socioeconomic position, and age. SETTING Swedish military service conscription register, cause of death register, and census data. PARTICIPANTS 45 920 Swedish men (mean age 18.7, SD 0.5...

BACKGROUND A higher resting heart rate is associated with an increased probability of cardiovascular complications and premature death in patients with type 2 diabetes mellitus. The impact of heart rate on the risk of developing microvascular complications, such as diabetic retinopathy and nephropathy, is, however, unknown. The present study tests the hypothesis that a higher resting heart rate...

INTRODUCTION AND OBJECTIVES The aim of the present study was to examine the prognostic significance of heart rate and its trend in heart transplantation. METHODS This observational study enrolled 170 patients who received a bicaval heart transplant between 1995 and 2005; all were in sinus rhythm. The resting heart rate was determined via electrocardiography at the end of the first posttranspl...

the territory of serbia is vulnerable to various types of natural hazards and the risk is not equal across the entire territory; it varies depending on the type of hazard and the expected potential for damage. the first aim of this research was to determine the geographical distributions of the major types of natural hazards. seismic hazards, landslides, rock falls, floods, torrential floods...

introduction: one of the sources of natural occurring radiation was soils. the purpose of article was to determine soil pollution by radiation absorbed dose rate, radium equivalent activity, external hazard index, annual gonad dose equivalent and annual effective dose equivalent. methods & materials: the soil samples was located in chahbahar city in blouchestan of iran, was chosen for studying ...