Results 31 to 40 of about 20,241,149 (192)

Reaction Steps in Heterogeneous Photocatalytic Oxidation of Toluene in Gas Phase—A Review

Molecules, 2023
A review of the current literature shows there is no clear consensus regarding the reaction mechanisms of air-borne aromatic compounds such as toluene by photocatalytic oxidation.
Yerzhigit Tulebekov, Zhandos Orazov, Bagdat Satybaldiyev, Daniel D. Snow, Raphaël Schneider, Bolat Uralbekov   +5 more
doaj   +1 more source

SentiBench - a benchmark comparison of state-of-the-practice sentiment analysis methods [PDF]

, 2016
In the last few years thousands of scientific papers have investigated sentiment analysis, several startups that measure opinions on real data have emerged and a number of innovative products related to this theme have been developed.
A Abbasi, A Esuli, A Hannak, A Tamersoy, A Tumasjan, AB Warriner, ADI Kramer, B Liu, B Pang, B Pang, C Biever, C Hutto, C Levallois, C Strapparava, D Garcia, D Tang, D Watson, DH Wolpert, E Cambria, E Cambria, E Kouloumpis, GA Miller, H Wang, J Reis, J Reis, J Wiebe, JR Landis, M Araujo, M Brysbaert, M Cha, M Hu, M Taboada, M Taboada, M Taboada, M Tsytsarau, ML Berenson, N Godbole, N Kalchbrenner, N Oliveira, N Pappas, N Pappas, NA Diakopoulos, P Gonçalves, P Nakov, PJ Stone, PS Dodds, PS Dodds, R Feldman, R Jain, R Johnson, R Plutchik, R Snow, R Socher, R Valitutti, S Baccianella, S Mohammad, S Mohammad, S Mohammad, S Narr, SM Mohammad, T Smedt De, T Wilson, T Wilson, YR Tausczik   +63 more
core   +2 more sources

Optimization of Time-Weighted Average Air Sampling by Solid-Phase Microextraction Fibers Using Finite Element Analysis Software

Molecules, 2018
Determination of time-weighted average (TWA) concentrations of volatile organic compounds (VOCs) in air using solid-phase microextraction (SPME) is advantageous over other sampling techniques, but is often characterized by insufficient accuracies ...
Bulat Kenessov, Jacek A. Koziel, Nassiba Baimatova, Olga P. Demyanenko, Miras Derbissalin   +4 more
doaj   +1 more source

Clustering methods based on variational analysis in the space of measures [PDF]

, 2000
We formulate clustering as a minimisation problem in the space of measures by modelling the cluster centres as a Poisson process with unknown intensity function.We derive a Ward-type clustering criterion which, under the Poisson assumption, can easily be
Molchanov, I.S., Van Lieshout, M.N.M., Zuev, S.A.   +2 more
core   +3 more sources

A Bilevel DEA Model for Efficiency Evaluation and Target Setting with Stochastic Conditions

Mathematics
The effective allocation of limited resources and the establishment of targeted goals play a pivotal role in enhancing the overall efficiency of large enterprises and organizations.
Andreas C. Georgiou, Konstantinos Kaparis, Eleni-Maria Vretta, Kyriakos Bitsis, George Paltayian   +4 more
doaj   +1 more source

Effects of Moisture Content and Solvent Additive on Headspace Solid-Phase Microextraction of Total Petroleum Hydrocarbons from Soil

Eurasian Chemico-Technological Journal, 2012
Present paper describes optimization of the method of quantitative determination of total petroleum hydrocarbons in soil samples using headspace solid - phase microextraction (SPME) in combination with gas chromatography - mass spectrometry (GC-MS ...
M. B. Alimzhanova, B. N. Kenessov, M. K. Nauryzbayev, J. A. Koziel   +3 more
doaj   +1 more source

Sentiment analysis of health care tweets: review of the methods used. [PDF]

, 2017
BACKGROUND: Twitter is a microblogging service where users can send and read short 140-character messages called "tweets." There are several unstructured, free-text tweets relating to health care being shared on Twitter, which is becoming a popular area ...
Darzi, A, Gohil, S, Vuik, S
core   +1 more source

Vacuum-assisted headspace-solid phase microextraction of pesticides in grape samples

Advances in Sample Preparation
Vacuum-assisted headspace solid-phase microextraction (Vac-HS-SPME) could provide an alternative for extracting pesticides from grape samples. Vac-HS-SPME method is utilized to the simultaneous analysis of six pesticides from various classes, namely ...
Yerkanat Syrgabek, Mereke Alimzhanova, Saltanat Yegemova, Svetlana Batyrbekova   +3 more
doaj   +1 more source

Statistical methods of SNP data analysis with applications [PDF]

, 2011
Various statistical methods important for genetic analysis are considered and developed. Namely, we concentrate on the multifactor dimensionality reduction, logic regression, random forests and stochastic gradient boosting.
Bulinski, Alexander, Butkovsky, Oleg, Shashkin, Alexey, Yaskov, Pavel   +3 more
core   +2 more sources

Analysis of Schwarz methods for a hybridizable discontinuous Galerkin discretization

, 2014
Schwarz methods are attractive parallel solvers for large scale linear systems obtained when partial differential equations are discretized. For hybridizable discontinuous Galerkin (HDG) methods, this is a relatively new field of research, because HDG ...
Gander, Martin J., Hajian, Soheil
core   +2 more sources