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852. A New Artificial Intelligence Optimization Method for PCA Based Unsupervised Change Detection of Remote Sensing Image Data
- Creator:
- Atasever, U. H., Kesikoglu , M. H., and Ozkan, C.
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- unsupervised change detection, differential search, and PCA
- Language:
- English
- Description:
- In this study, a new artificial intelligence optimization algorithm, Differential Search (DS), was proposed for Principal Component Analysis (PCA) based unsupervised change detection method for optic and SAR image data. The model firstly computes an eigenvector space using previously created k×k blocks. The change detection map is generated by clustering the feature vector as two clusters which are changed and unchanged using Differential Search Algorithm. For clustering, a cost function is used based on minimization of Euclidean distance between cluster centers and pixels. Experimental results of optic and SAR images proved that proposed approach is effective for unsupervised change detection of remote sensing image data.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
853. A new atherogenic effect of saturated fatty acids
- Creator:
- Rudolf Poledne
- Type:
- article, články, model:article, and TEXT
- Subject:
- Fyziologie člověka a srovnávací fyziologie, fyziologie člověka, human physiology, diet, fatty acids, lipoproteins, inflammation, 14, and 612
- Language:
- English
- Description:
- There is increasing evidence that dietary saturated fatty acids (SAFA) have not only an indirect atherogenic effect due to increasing LDL-cholesterol concentration but also a direct effect by activating the inflammation process. This review summarizes several recent publications in this field. The effect of SAFA on the inflammation process mediated by Toll-like receptor 4/NF-κB pathway has been well documented in various in vitro culture studies of macrophages and adipocytes or in their co-culture. In contrast to these in vitro data, in vivo epidemiological studies or clinical experiments in men are less consistent. Well controlled cross-over studies in volunteers might enlighten the differences between saturated and unsaturated fatty acids dietary intake and proatherogenic inflammation effects., R. Poledne., and Obsahuje seznam literatury
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
854. A new atractid nematode, Atractis vidali sp. n. (Nematoda: Atractidae), from cichlid fishes in southern Mexico
- Creator:
- González-Solís, David and Moravec, František
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- parasitic nematode, Atractis vidali, Atractidae, freshwater fishes, Cichlasoma, Vieja, and Mexico
- Language:
- English
- Description:
- A new nematode species, Atractis vidali sp. n., is described from the intestine of cichlid fishes, Vieja intermedia (Günther) (type host) and Cichlasoma pearsei (Hubbs), from specimens collected in three localities in the Mexican states of Campeche (Santa Gertrudis Creek) and Chiapas (Cedros and Lacanjá Rivers). It differs from the only other atractid species reported in fishes of Mexico, Atractis bravoae, mainly in possessing two very unequal spicules. In contrast to the 10 species parasitising amphibians and reptiles in America, the new species has a longer body, spicules and a gubernaculum, and a different distribution of the caudal papillae. This is the second species of the genus Atractis recorded from freshwater fishes.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
855. A new Caco-2 cell model of in vitro intestinal barrier: application for the evaluation of magnesium salts absorption
- Creator:
- Kyselovič, Ján, Chomaničová, Nikola, Adamičková, Adriana, Valášková, Simona, Šalingová, Barbara, and Gažová, Andrea
- Format:
- počítač and online zdroj
- Type:
- model:article and TEXT
- Subject:
- fyziologie člověka, hořčík, human physiology, magnesium, Magnesium salts, Magnesium absorption, Caco-2 cell line, 14, and 612
- Language:
- English
- Description:
- Experimental data concerning the bioavailability of the different Mg-salts in human organism is inconsistent. Mg-absorption reported by clinical studies largely varies depending on the method used for evaluation. The aim of this study was to evaluate the bioavailability and accessibility of magnesium bound in different Mg-salt compounds, using an in vitro model of intestinal cell barrier. The study included a variety of inorganic (oxide, sulphate, chloride, carbonate) and organic salts (lactate, citrate, pidolate). Caco-2 cells were cultivated in a complete culture medium with different magnesium salts treatments in ascending concentrations. The viability and quantity of cells was analysed by FACS. Mg-absorption was analysed by a direct colorimetric assay, measured by spectrometry. T-test identified a significant decrease in cell count treatment with mg-lactate compared with citrate. Mg-pidolate showed a significantly higher cell viability compared with Mg-citrate, Mg-lactate and Mg-chloride. Even though the difference was not significant, we showed that an increase in Mg2+ salt concentration progressively decreased the cell count and the viability and the effect was universal for all the used Mg-salt treatments. Mg-citrate, chloride, and sulphate showed a significantly lower absorption compared to Mg-carbonate, pidolate and oxide. Our in vitro monolayer model of human intestinal transport showed that viability and quantity of cell decreased with increasing Mg-concentration. We admit that our experiment model may have some limitations in accurately describing an in vivo Mg2+ absorption. Moreover, it is also necessary to assess the relevance of our data in vivo and especially in clinical practice., Ján Kyselovič, Nikola Chomaničová, Adriana Adamičková, Simona Valášková, Barbara Šalingová, Andrea Gažová., and Obsahuje bibliografii
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
856. A new characterization for the simple group ${\rm PSL}(2,p^2)$ by order and some character degrees
- Creator:
- Khosravi, Behrooz, Khosravi, Behnam, Khosravi, Bahman, and Momen, Zahra
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- character degree, order, and projective special linear group
- Language:
- English
- Description:
- Let $G$ be a finite group and $p$ a prime number. We prove that if $G$ is a finite group of order $|{\rm PSL}(2,p^2)|$ such that $G$ has an irreducible character of degree $p^2$ and we know that $G$ has no irreducible character $\theta $ such that $2p\mid \theta (1)$, then $G$ is isomorphic to ${\rm PSL}(2,p^2)$. As a consequence of our result we prove that ${\rm PSL}(2,p^2)$ is uniquely determined by the structure of its complex group algebra.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
857. A new characterization of ${\rm RBMO}(\mu )$ by John-Strömberg sharp maximal functions
- Creator:
- Hu, Guoen, Yang, Dachun, and Yang, Dongyong
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- non-doubling measure, $\mathop{\rm RBMO}(\mu )$, and sharp maximal function
- Language:
- English
- Description:
- Let $\mu $ be a nonnegative Radon measure on ${{\mathbb R}^d}$ which only satisfies $\mu (B(x, r))\le C_0r^n$ for all $x\in {{\mathbb R}^d}$, $r>0$, with some fixed constants $C_0>0$ and $n\in (0,d].$ In this paper, a new characterization for the space $\mathop{\rm RBMO}(\mu )$ of Tolsa in terms of the John-Strömberg sharp maximal function is established.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
858. A new characterization of Anderson’s inequality in $C_1$-classes
- Creator:
- Mecheri, Salah
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- $C_1$-class, generalized $p$-symmetric operator, and Anderson Inequality
- Language:
- English
- Description:
- Let $\Cal H$ be a separable infinite dimensional complex Hilbert space, and let $\Cal L(\Cal H)$ denote the algebra of all bounded linear operators on $\Cal H$ into itself. Let $A=(A_{1},A_{2},\dots ,A_{n})$, $B=(B_{1},B_{2},\dots ,B_{n})$ be $n$-tuples of operators in $\Cal L(\Cal H)$; we define the elementary operators $\Delta_{A,B}\:\Cal L(\Cal H)\mapsto\Cal L(\Cal H)$ by $\Delta_{A,B}(X)=\sum_{i=1}^nA_iXB_i-X.$ In this paper, we characterize the class of pairs of operators $A,B\in\Cal L(\Cal H)$ satisfying Putnam-Fuglede’s property, i.e, the class of pairs of operators $A,B\in\Cal L(\Cal H)$ such that $\sum_{i=1}^nB_iTA_i=T$ implies $\sum_{i=1}^nA_i^*TB_i^*=T$ for all $T\in\Cal C_1(\Cal H)$ (trace class operators). The main result is the equivalence between this property and the fact that the ultraweak closure of the range of the elementary operator $\Delta_{A,B}$ is closed under taking adjoints. This leads us to give a new characterization of the orthogonality (in the sense of Birkhoff) of the range of an elementary operator and its kernel in $C_1$ classes.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
859. A new characterization of geometric distribution
- Creator:
- Maiti, Sudhansu S. and Biswas, Atanu
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- discrete distribution, exponential, and lack of memory
- Language:
- English
- Description:
- A characterization of geometric distribution is given, which is based on the ratio of the real and imaginary part of the characteristic function.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
860. A new characterization of symmetric group by NSE
- Creator:
- Babai, Azam and Akhlaghi, Zeinab
- Format:
- print, bez média, and svazek
- Type:
- model:article and TEXT
- Subject:
- mathematics, set of the numbers of elements of the same order, prime graph, 13, and 51
- Language:
- English
- Description:
- Let G be a group and !(G) be the set of element orders of G. Let k 2 !(G) and mk(G) be the number of elements of order k in G. Let nse(G) = {mk(G) : k 2 !(G)}. Assume r is a prime number and let G be a group such that nse(G) = nse(Sr), where Sr is the symmetric group of degree r. In this paper we prove that G = Sr, if r divides the order of G and r2 does not divide it. To get the conclusion we make use of some well-known results on the prime graphs of finite simple groups and their components., Azam Babai, Zeinab Akhlaghi., and Seznam literatury
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public