The MAXIMUM CUT problem (MAX-CUT) is one of the simplest graph partitioning problems to conceptualize, and yet it is one of the most difficult combinatorial optimization problems to solve. The objective of MAX-CUT is to partition the set of vertices of a graph into two subsets, such that the sum of the weights of the edges having one endpoint in each of the subsets is maximum. This problem is k...

the aim of this study was to evaluate the psychometric properties, factor structure and kessler psychological distress scale (k-10) cut-off point on the students and prepare it as a screening tool for mental health. in this study, 500 students of tehran universities of medical sciences were selected by proportional sampling. participants responded to the kessler psychological distress scale and...

PURPOSE To evaluate the mutual inter-relationship of mitotic indices, argyrophilic nuclear organizer regions (AgNOR) count, Ki-67 and B-cell lymphoma 2 protein (bcl-2) in papillary urothelial bladder cancer (pUBC), and their correlation with grade and stage. To establish the cut-off values of these markers to detect high grade and muscle invasive bladder cancer. MATERIALS AND METHODS Fifty-fo...

We answer the question: If a vacuum sector Hamiltonian is regularized by an energy cutoff, how one-kink regularized? find that it not indeed normal modes of all energies are present in kink Hamiltonian, but rather decomposition field into mode operators yields coefficients which lie on constrained surface forces them to become small for above cutoff. This explains old observation cutoff leads i...

The immense demand for communication systems worldwide has created an enormous market for semiconductors devices (SiGe HBTs) in variegated applications. Nowadays SiGe HBTs are surpassing even the fastest III-V production devices in the GHz speed orbit. Scaling has been the prime source of supremacy behind the successful technology innovations. The design and optimization of un-scaled and scaled...

BACKGROUND  Right atrial pressure (RAP) is commonly estimated using inferior vena cava (IVC) diameter and its respirophasic variations. Although a guideline has been provided for estimation of RAP due to variation in IVC dimensions based on studies in Western subjects, echocardiographic values in Asian subjects are unknown. METHODS AND RESULTS  We studied 369 patients who underwent IVC ultras...

The period of event-free survival (EFS) within the same histopathological glioma grades may have high variability, mainly without a known cause. The purpose of this study was to reveal the prognostic value of quantified tumor blood flow (TBF) values obtained by arterial spin labeling (ASL) for EFS in patients with histopathologically proven astrocytomas independent of WHO (World Health Organiza...

BACKGROUND The paper presents a method of linear time-varying filtering, with extremely low computational costs, for the suppression of baseline drift in electrocardiographic (ECG) signals. An ECG signal is not periodic as the length of its heart cycles vary. In order to optimally suppress baseline drift by the use of a linear filter, we need a high-pass filter with time-varying cut-off frequen...

chitosan/polyethersulfone (cs/pes) composite membrane was prepared from casting chitosan solution on polyethersulfone substrate membrane. the substrate membrane was prepared by phase inversion technique using polyethersulfone (pes) and dimethylacetamide (dmac) as solvent with and without the addition of polyvinylpyrrolidone (pvp) as pore-forming agent. the effects of the composition of the c...