PURPOSE The objective of this study is to compare the physiological capacity and training characteristics of the world's six highest ranked female cross-country skiers (world class (WC)) with those of six competitors of national class (NC). METHODS Immediately before the start of the competition season, all skiers performed three 5-min submaximal stages of roller skiing on a treadmill for mea...

During extended warranty (EW) period, maintenance events play a key role in controlling the product systems within normal operations. However, modelling of failure process and optimization is complicated owing to complex features system, namely, components multi-component system are interdependent with each other some form. For purpose optimizing EW pricing decision scientifically rationally, t...

A new maintenance policy which minimizes the total expected servicing cost for an item with two–dimensional warranty is proposed. An iterative procedure to estimate the item’s failure rate function from historical observations and an optimization algorithm based on Monte Carlo simulation are applied to obtain the best maintenance policy. Numerical examples and sensitivity analysis are presented.

This study investigates the effect of carbide particle size on the microstructure, mechanical properties, and abrasive wear resistance of WC-17%Co HVOF-sprayed coatings. The characteristics of WC-1, WC-2, and WC-3 coatings with carbide sizes of 1 µm, 0.9 µm, and 0.5 µm, respectively, were also investigated. WC-1 coating experienced the maximum carbon loss of 42%, while WC-2 and WC-3 coatings un...

In this study, carbon was made from walnut wood as a low-cost and non-toxicnatural adsorbent.Walnut wood(WC), were successfully synthesized by an in chemical vapor deposition methodthen characterized using FT-IR techniques and used for the removal of trihalomethanes(THMs) from aqueous solution. The trihalomethanes(THMs) removal by the developed adsorbent was investigated using batch adsorption ...

It is known that machinery in agriculture used to perform work optimal agricultural terms under difficult conditions, which requires constant improvement of approaches determining the technical condition. Technical service main and most effective measure ensures maintenance machines working condition during life cycle. At same time, order objectively determine machine, it necessary obtain an ap...

BACKGROUND/OBJECTIVES Abdominal obesity (AO) is associated with elevated risk for cardiovascular diseases; however, this association is less clear for non-obese people. We estimated the association of AO and cardiovascular risk factors (CVRF) and disease in non-obese adult individuals from Chile. SUBJECTS/METHODS 5248 adults (15 years of age or older) of both sexes from the Chilean National H...

Abstract Standard life cycle techniques such as warranty cost (LCWC) analysis and (LCA) are used to respectively quantify the relative economical environmental advantages of remanufactured goods while simultaneously identifying avenues for improvement. In this paper, we contribute literature on studies by incorporating reliability into LCWC LCA with goal improving long-term/multiple decision ma...

Problem definition : We examine a dynamic assignment problem faced by large wireless service provider (WSP) that is Fortune 100 company. This company manages two warranties: (i) customer warranty the WSP offers its customers and (ii) an original equipment manufacturer (OEM) OEMs offer WSP. The uses devices refurbished OEM as replacement devices, hence their operation closed-loop supply chain. D...