نتایج جستجو برای: rf method
تعداد نتایج: 1658041 فیلتر نتایج به سال:
conclusions some of the noninvasive body contouring devices in animal and human studies such as cryolipolysis, rf, lllt and hifu showed statistical significant effects on body contouring, removing unwanted fat and cellulite in some body areas. however, the clinical effects are mild to moderate, for example 2 - 4 cm circumference reduction as a sign of subcutaneous fat reduction during total tre...
A fault diagnosis method for wind turbine gearboxes based on undersampling, XGBoost feature selection, and improved whale optimization-random forest (IWOA-RF) was proposed the problem of high false negative positive rates in gearboxes. Normal samples raw data were subjected to undersampling first, various features labels provided with importance analysis by selection select higher label correla...
The DC transport properties of and the radio-frequency (RF) wave absorption (at 2.525 MHz) in a sample of La0.67Sr0.33MnO3 prepared by floating-zone method are measured. The Curie temperature, Tc, of the sample is about 374 K. Giant temperature and magnetic-field variations in RF absorption are found in the vicinity of Tc. Relative change of the RF absorption in magnetic field (magnetoabsorptio...
Relevance feedback (RF) is an interactive process which refines the retrievals by utilizing user’s feedback history. Most researchers strive to develop new RF techniques and ignore the advantages of existing ones. In this paper, we propose an image relevance reinforcement learning (IRRL) model for integrating existing RF techniques. Various integration schemes are presented and a long-term shar...
The aim of this study was to determine whether cerebral microcirculatory parameters in rats were modified during local cortex exposure to a radiofrequency electromagnetic field (RF) under non-thermal conditions. The cortex tissue targeted was locally exposed to 1439 MHz RF using a figure-8 loop antenna at an averaged specific absorption rate of 2.0 W/kg in the target area for 50 min. Three micr...
زمینه و هدف : آرتریت روماتوئید بیماری التهابی منتشر و مزمن است. آنتی بادی های پپتید آنتی سیکلیک سیترولینه و فاکتور روماتوئید (rf) به عنوان آنتی بادی های اختصاصی در تشخیص این بیماری مطرح شده اند و هر دو از اهمیت تشخیصی بالایی برخوردارند. این مطالعه به منظور تعیین ارزش تشخیصی آنتی بادی های ضدپپتید حلقوی سیترولینه (anti-ccp) و فاکتور روماتوئید (rf) در تشخیص بیماری آرتریت روماتوئید انجام شد. روش بر...
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