We are developed a modified version of affine projection algorithm for acoustic echo cancellation, which has moderate convergence speed and noiserobust characteristics. The proposed algorithm normalizes the update equation to reduce noise effect of affine projection algorithm, by adding the multiplication of estimation error power and projection order to auto-covariance matrix of input signal. ...

T he rapid evolution of care for patients with inflammatory bowel disease (IBD) has resulted in significant variation in management of patients with IBD. Studies have identified disparities in management between experts in IBD and community providers. In addition, high volume IBD centers have improved operative and inpatient outcomes compared with hospitals that have lower volumes. In remote ar...

background: ovarian immature teratoma is a very rare type of tumor associated with a high relapse rate and mortality. correspondingly, early diagnosis is important for effective treatment. the goal of this study was to retrospectively analyze the ultrasound characteristics of 11 cases of immature teratomas. materials and methods: between january 2002 and december 2010, 11 patients were diagnose...