AIMS The aim of our study was to evaluate the influence of left ventricular (LV) diastolic filling impairment on postoperative results in patients (pts) with low LV ejection fraction (EF) (<35%) undergoing coronary artery bypass grafting (CABG). METHODS The study covered 56 patients (mean age 58.9 +/- 17.1 years). Two dimensional Doppler echocardiographic investigations were performed pre- an...

Preform design in forging processes is an important aspect for improving the forging quality and decreasing the production cost. The objective of this paper is to obtain an optimal perform shape in the consideration of the influence of the metal flow deformation in closed die forging process. Finite element method based DEFORMTM 3D software in conjunction with Taguchi method has been used to si...

ion Sheets unterstützen die genaue Analyse eines Ziels [vSB99]. Sie dienen insbesondere als Kommunikationsmittel zwischen den Beteiligten. In einem Abstraction Sheet werden die folgenden Elemente erfasst: • von den Projektbeteiligten vorgeschlagene Metriken, um die Zielerreichung zu messen, • eine Hypothese über die erwarteten Ergebnisse, • mögliche Ein ussfaktoren auf das Ergebnis in dem betra...

Metal forming processes, compared with machining ones, reduce production steps and increase manufacturing speed in addition to saving raw material. In this paper, forming process of column of a steering mechanism is investigated by finite element analyses and experimental tests; and optimum die design parameters are found. Forming process parameters including die opening angle, bearing length, ...

During tube hydroforming process, the friction conditions between and die have a great importance on material plastic flow distribution of residual stresses final component. Indeed, three-dimensional finite element model process in case square section has been performed, using dynamic static approaches, to study effect both induced by process. First, comparative numerical experimental results c...

Automatic face recognition is a slowly maturing and economically highly important technology, which still falls short of the high expectations set on it. The variation in images taken from the same person makes face recognition systems difficult to design – it is impossible to explicitly code all variability. Successful systems have relied heavily on the principle of self-organizing many fragil...

this study aimed at determining the efficiency of sugar beet growers in borujerd city, iran. data were collected from 2010-11 growing season by random sampling of sugar beet growers and filling 100 questionnaires and analyzed using data envelopment analysis (dea) method. results showed that the average technical, economical and special efficiencies were 0.83, 0.79, and 0.84 in fixed output stat...