This paper points out how the nonlinearities involved in multivariable Takagi–Sugeno (T–S) fuzzy control systems could originate complex behavior phenomena, such as multiple equilibrium points or limit cycles, that cannot be detected using conventional stability analysis techniques. In the paper, the application of MIMO frequency-domain methods to predict the existence of multiple equilibria an...

There has been a lot of research on ellipse fitting and measuring ellipticity of a set of points. However, when the shape is primarily hyperbolic or parabolic, there are no existing methods to measure such properties. This paper describes the first known methods of measuring conicity, hyperbolicity and parabolicity of a set of points. After finding the best conic fit, we measure the correspondi...

Conicity is an important characteristic that helps the railway vehicle to steer itself down track. However during operation, conicity tends change inconsistently due frictional contact at wheel-rail interface. Safety, reliability and ride comfort which are utmost importance for journey adversely affected changes in level beyond certain limit. Several techniques have been employed monitoring hea...

In menopause, changes in body fat distribution lead to increasing risk of cardiovascular disease and metabolic disorders. The aim of this study was to assess the association of adiposity using the conicity index (CI), body mass index (BMI) and waist circumference (WC) with cardiovascular risk factors (hypertension, diabetes and dyslipidaemia). The sample of this cross-sectional study was collec...

INTRODUCTION Abdominal fat mass is an important risk factor of inflammation in the general population as it is in haemodialysis (HD) patients. The aim of this study was to investigate the association of adiposity using the conicity index (Ci) with nutritional-inflammatory markers and to analyse whether these factors were related with the clinical outcome in HD patients. METHODS A cross-sectio...

Central obesity is closely related to various metabolic diseases such as diabetes mellitus (DM). Several studies examined the correlation between central parameters waist circumference (WC) and waist-to-height ratio (WtHR) with fasting blood glucose (FBG) levels. One of that still rarely used in Indonesia a conicity index (CI). This study analyzed CI, WC, WtHR FBG levels among 59 subjects aged ...

Gallium nitride (GaN) wires are used to build up capacitive flexible piezoelectric sensors dedicated to structural health monitoring applications. These slightly cone-shaped nanowires with a hexagonal cross section are grown on sapphire substrate by Metal Organic Vapor Phase Epitaxy (MOVPE); their length (L) can vary from few microns up to hundreds of microns, while the conicity angle (alpha) e...

BACKGROUND This cross-sectional study aimed to evaluating the association between body adiposity markers and high-risk of coronary heart disease (CHD) in patients with type 2 diabetes. METHODS Recent adiposity markers [waist-to-height ratio, conicity index (C-index) and body adiposity index] and traditional markers [BMI, waist circumference and waist-to-hip ratio (WHR)] were measured. The 10-...