This report focuses on improving the stability as well as the approximation properties of Reduced Order Models (ROM) based on Proper Orthogonal Decomposition (POD). The ROM is obtained by seeking a solution belonging to the POD subspace and that at the same time minimizes the Navier-Stokes residuals. We propose a modified ROM that directly incorporates the pressure term in the model. The ROM is...

Zusammenfassung Die vorliegende Masterarbeit behandelt die numerische Lösung linear-quadratischer Optimalsteuerungsprobleme mittels " optimality system POD " (OSPOD) und POD a-posteriori Fehlerschätzer. Ausgangspunkt ist die Modellreduktion mit einem klassischen POD Galerkin Ansatz, wobei die Güte des reduzierten Modells durch den a-posteriori Fehler in der Steuerung sehr gut geschätzt werden k...

Introduction: Obesity is rapidly becoming a worldwide problem affecting the reproductive system. Some studies have shown the relationship between obesity and infertility, but until now it remains controversial. The present study was undertaken to investigate the effects of a specific high-fat diet on the male rat reproductive performances. Materials and Methods: Male Wistar rats were fed either...

BACKGROUND Transient hypocalcemia is one of the postoperative complications of thyroidectomy for thyroid nodules, and intraoperative and postoperative intact parathyroid hormone (iPTH) assays are used to predict postoperative hypocalcemia. OBJECTIVES The current study was conducted to evaluate a single serum iPTH measurement on postoperative day 1 (POD 1) as a means to predict hypocalcemia oc...

OBJECTIVE To evaluate preoperative real-time dynamic transvaginal sonography (TVS) in the prediction of pouch of Douglas (POD) obliteration in women undergoing laparoscopy for suspected endometriosis. METHODS This was a multicenter prospective observational study undertaken from January 2009 to November 2011. All women with symptoms suggestive of endometriosis who were scheduled for laparosco...

BACKGROUND AND OBJECTIVES Postoperative delirium (POD) in Surgical Intensive Care patients is an important independent outcome determinant. The purpose of our study was to evaluate the incidence and determinants of POD. METHODS Prospective cohort study conducted during a period of 10 months in a Post-Anesthesia Care Unit (PACU) with five intensive care beds. All consecutive adult patients sub...

The “equation-free” (EF) method is based on a procedure, which is often used in complex, multi-scale problems, given an initial macroscopic variable, by lifting, evolve in Direct Numerical Simulations (DNS), restriction, and projective integration. In this paper, we apply the Equation-free method to the reduced modeling of a large-scale upper ocean circulation in the tropic Pacific domain. We c...

BACKGROUND Strategies to protect the brain from postoperative delirium (POD) after hip fracture are urgently needed. The development of delirium often is associated with the loss of independence, poor functional recovery, and increased morbidity, as well as increases in length of hospital stay, discharges to nursing facilities, and healthcare costs. We hypothesize that xenon may reduce the burd...

The production of the H(2)O(2)-generating enzyme pyranose oxidase (POD) (EC 1.1.3.10) (synonym, glucose 2-oxidase), two ligninolytic peroxidases, and laccase in wood decayed by three white rot fungi was investigated by correlated biochemical, immunological, and transmission electron microscopic techniques. Enzyme activities were assayed in extracts from decayed birch wood blocks obtained by a n...

In soybean, long days during post-flowering increase seed number. This positive photoperiodic effect on seed number has been previously associated with increments in the amount of radiation accumulated during the crop cycle because long days extend the duration of the crop cycle. However, evidence of intra-nodal processes independent of the availability of assimilates suggests that photoperiodi...