The popularity of social networks has made them a perfect medium for activity or advertising campaign promotion. Therefore, many people use Facebook pages to announce their advertising campaign. The purpose of this study is to extract activity events by constructing two named entity recognition models, namely activity name and location, via a Web NER model generation tool [1]. We enhance the to...

In this work, a novel method is proposed to recognize several facial expressions from time-sequential facial expression images. To produce robust facial expression features, optical flow extraction is utilized which are further improved by Principal Component Analysis (PCA) and Generalized Discriminant Analysis (GDA). Using these features, discrete Hidden Markov Models (HMMs) are utilized to mo...

A myriad of applications from different domains collects time series data for further analysis. In many of them, such as seismic datasets, the observed data is also associated to a space dimension, which corresponds, in fact, to spatial-time series. The analysis of these datasets is difficult due to both the continuous nature of the observed data and the relationship between spatial and time di...

A novel dispersive liquid-liquid microextraction (DLLME) method followed by HPLC analysis, termed sequential DLLME, was developed for the preconcentration and determination of aryloxyphenoxy-propionate herbicides (i.e. haloxyfop-R-methyl, cyhalofop-butyl, fenoxaprop-P-ethyl, and fluazifop-P-butyl) in aqueous samples. The method is based on the combination of ultrasound-assisted DLLME with in si...

Microwave-assisted and ultrasound-assisted extraction assays were used to isolate total flavonoids (TF) from Osmanthus fragrans flowers. The effects of the solid-liquid ratio, ethanol concentration, microwave power, microwave extraction time, ultrasonic power and ultrasonic extraction time on the yield of TF were studied. A sequential combination of microwave- and ultrasound-assisted extraction...

The potential bioavailability of Hg from soil might be estimated by a variety of chemical extraction procedures, differing in the extraction agent, its concentration, the sample weight, and the time of extraction. In this study, a comparative analysis of several extraction methods, commonly used for obtaining the mobile and potentially mobilizable phase of the mercury was carried out. Concentra...

In data mining, the preparation of complete, quality and real is a key prerequisite for successful mining in order to discover something new from already recorded given database. Data extraction fundamental step analysis. with missing values complicate both analysis application solution. To overcome this situation, some Numerical techniques must be used during preparation. With help technical m...

In order to evaluate the local environmental risk deriving from coal transport and burning, 30 soil samples were collected along conveyor belt around coal-burning power plant Federico II of Brindisi (Apulia, southern Italy). Since pollution metals metalloids is measured not only by their total concentration but also evaluating mobility availability, arsenic sequential extraction, leaching test ...