An improvedQestimation approach: the weighted centroid frequency shift method

An Improved Weighted Centroid Localization Algorithm

As one of the most important applications of wireless sensor network, positioning technology has become a extremely hot research filed. Taking into account of the position of beacon nodess, they make an effect on the positioning accuracy of unknown nodes. Therefore, in this paper, it proposes a new weighted centroid localization algorithm based on the traditional algorithm. For the selection of...

An improved peak-frequency-shift method for Q estimation

There are mainly two frequency-shift methods developed for Q estimation: the centroid-frequency-shift method and the peak-frequency-shift method. Both of the two methods have advantages and disadvantages. Here we discuss and compare the two methods in detail and propose a novel frequency-shift method for Q estimation, which can improve Q estimates by combining the benefits of the two methods to...

Weighted Centroid Method for Breast Tumor Localization Using an Uwb Radar

This paper studies the potential of ultra-wideband (UWB) microwave imaging for detection and localization of breast cancer in its early stages. A method is proposed for locating tumors which is based on the time-of-flight of the signal backscattered at the tumor. Timeof-flight is detected using a wavelet transform algorithm. The main contribution of this paper is that it proposes to determine t...

a paradigm shift away from method-wise teaching to strategy-wise teaching: an investigation of reconstructive strategy versus communicative strategy

چکیده: هدف اصلی این مطالعه ی توصیفی تحقیقی در حقیقت تلاشی پساروش-گرا به منظور رسیدن به نتیجه ای منطقی در انتخاب مناسبترین راهکار آموزشی بر گرفته از چارچوب راهبردی مطرح شده توسط والدمر مارتن بوده که به بهترین شکل سازگار و مناسب با سامانه ی آموزشی ایران باشد. از این رو، دو راهکار آموزشی، راهکار ارتباطی و راهکار بازساختی، برای تحقیق و بررسی انتخاب شدند. صریحاً اینکه، در راستای هدف اصلی این پژوهش، ر...

An iterative approach for estimation of efficiency by weighted distance