Many problems, such as cognitive radio, parameter control of a scanning tunnelling microscope or internet advertisement, can be modelled as non-stationary bandit problems where the distributions of rewards changes abruptly at unknown time instants. In this paper, we analyze two algorithms designed for solving this issue: discounted UCB (D-UCB) and sliding-window UCB (SW-UCB). We establish an up...

Single Event Upsets (SEU) arising from atmospheric neutrons and alpha particles are becoming increasingly important in combinational logic circuits. Combinational logic is resilient to soft errors due to three masking phenomena: (1) Logical Masking, (2) Electrical Masking, and (3) Latching-window Masking. This paper concentrates on logical masking, and proposes a probabilistic model which calcu...

seismic attribute is a quantitative measure of an interested seismic characteristic. there are several seismic attributes. in recent years, time-frequency (tf) attributes have been developed which to reach them, tf analyzing of seismic data is required. a high resolution tf representation (tfr) can yield more accurate tf attributes. there are several tfr methods including short-time fourier tra...

The nonlinear rheology of a soft glassy material is captured by its constitutive relation, shear stress versus shear rate, which is most generally obtained by sweeping up or down the shear rate over a finite temporal window. For a huge amount of complex fluids, the up and down sweeps do not superimpose and define a rheological hysteresis loop. By means of extensive rheometry coupled to time-res...

land surface temperature (lst) is a significant parameter for many applications. many studies have proposedvarious algorithms, such as the split-window method, for retrieving surface temperatures from two spectrallyadjacent thermal infrared bands of satellite data. each algorithm is developed for a limited study area andapplication. in this paper, as part of developing an optimal split-window m...

Soft X-ray emission spectroscopy of aqueous myoglobin upon Fe 2p core excitation was carried out using a liquid cell with a 150 nm-thick polyimide window in a high vacuum chamber below 1×10−7 Pa. Fe 2p soft X-ray emission from the heme center of a met-myoglobin powder was effectively detected compared to that of an Fe2O3 powder. Fe 2p soft X-ray emission spectra for a series of aqueous-myoglobi...

In water-window soft x-ray microscopy the studied object is typically larger than the depth of focus and the sample illumination is often partially coherent. This blurs out-of-focus features and may introduce considerable fringing. Understanding the influence of these phenomena on the image formation is therefore important when interpreting experimental data. Here we present a wave-propagation ...