Abstract Three local bifurcations in DC-DC converters are reviewed. They are period-doubling bifurcation, saddle-node bifurcation, and Neimark bifurcation. A general sampled-data model is employed to study types of loss of stability of the nominal (periodic) solution and their connection with local bifurcations. More accurate prediction of instability and bifurcation than using the averaging ap...

Abstract In recent decades, glaciers outside Greenland and Antarctica have shown increasingly rapid rates of mass loss retreat the ice front, which is associated with climatic oceanic warming. Due to their maritime location, Icelandic are sensitive short-term climate fluctuations over last decade. this study, historical maps (1941–1949) US Army Map Service (AMS series C762) optical satellite im...

Building on recent studies, we attempt hemiWarm Epoch (though Lamb, examining evidence mostly spheric temperature reconstructions with proxy data netfrom western Europe, never suggested this was a global works for the past millennium. We focus not just on the phenomenon). We here apply the methodology detailed by reconstructions, but the uncertainties therein, and imporMBH98 to the sparser prox...

OVERVIEW Digital data play an increasingly important role in how we understand the present and past. The challenges inherent understanding using digital are as intellectually demanding any other archaeological research endeavor. For these reasons, management cannot be regarded a simple compliance or technical issue. to meaningfully preserved used rigorous ways, they need integrated fully into a...

a study of substantial anthropogenic related pollution in the coastal samut prakarn province (thailand) was carried out focusing on the bang pu nature reserve (remnant mangrove wetland) using a remote sensing (geospatial) technique. statistical regression models were developed between biochemical parameters of sample point and related reflectance data obtained from satellite imagery (landsat tm...

One hundred and seventy two healthy term (T) appropriate-for-dates (AFD) singleton neonates were prospectively studied from birth until 28 days of age for changes in weight, occipitofrontal circumference (OFC), chest circumference (CC), midarm circumference (MAC), thigh circumference (TC) and crownheel length (CHL). Male babies had statistically significant (p < 0.05) higher values than females...

This study analyzed the performance decline of wind turbine with age using SCADA (Supervisory Control And Data Acquisition) data and short-term in situ LiDAR (Light Detection Ranging) measurements taken at Shinan farm located on coast Bigeumdo Island southwestern sea South Korea. Existing methods have generally attempted to estimate aging through long-term trend analysis a normalized capacity f...