bluuebunny/crossref_metadata_2025 huggingface dataset:
The λ-Aluthge transform of EP matrices
Authors: Pappas Dimitrios , Katsikis Vasilios , Stanimirovic Predrag
Published: April 2019

In this work we present some relationships between an EP matrix T, its
Aluthge transform ?(T) or the ?-Aluthge transform ??(T) and the
Moore-Penrose inverse T+. We prove that the ?-Aluthge transform of T is also
an EP matrix, and the same thing holds for ??(T)+ and ??(T+). Also, we
explore the product ??(T)T, the connections between ?(T) and T+ as well as
the reverse order law for generalized inverses which are associated with
??(T). Finally, it is verified that the ranges of T and ??(T) are equal in
the case of EP matrices.
An extension of Eegoroff’s and Lusin’s theorems in operator-valued case
Authors: Bagheri-Bardi G.A. , Kkosheghbal-Ghorabayi M.
Published: April 2019

Here, we extend three basic facts from classical measure theory to
operator-valued case. At first we show that operator-valued measurable
functions may be approximated by simple ones. In the sequel, two fundamental
theorems Egoroff and Lusin are extended in operator-valued case.
New weighted inequalities for higher order derivatives and applications
Authors: Erden Samet , Sarikaya Mehmet , Budak Huseyin
Published: April 2019

We establish a new Ostrowski type inequality for (n+1)-times differentiable
mappings which are bounded. Then, some new inequalities of Hermite-Hadamard
type are obtained for functions whose (n+1) th derivatives in absolute
value are convex. Spacial cases of these inequalities reduce some well known
inequalities. With the help of obtained inequalities, we give applications
for the kth-moment of random variables.
Some structure spaces of generalized semirings
Authors: Hila Kostaq , Kar Sukhendu , Kuka Shkëlqim , Naka Krisanthi
Published: April 2019

In this paper, we study some structure spaces of (m,n)-semiring (S,f,1),
introducing the classes of n-ary prime k-ideals, n-ary prime full k-ideals,
n-ary prime ideals, maximal ideals and strongly irreducible ideals.
Considering their collections, respectively, of an (m,n)-semiring (S,f,
1), we construct the respective topologies on them by means of closure
operator defined in terms of intersection and inclusion relation among these
ideals of the (m,n)-semiring (S,f,1). The obtained topological spaces are
called the structure spaces of (m,n)-semiring (S,f,1). We mainly study
several principal topological axioms and properties of those structure
spaces of (m,n)-semiring such as separation axioms, compactness and
connectedness etc.
Interpolating Jensen-type operator inequalities for log-convex and superquadratic functions
Authors: Bakherad Mojtaba , Kian Mohsen , Krnic Mario , Ahmadi Seyyed
Published: April 2019

Motivated by some recently established Jensen-type operator inequalities
related to a convex function, in the present paper we derive several more
accurate Jensen-type operator inequalities for certain subclasses of convex
functions. More precisely, we obtain interpolating series of Jensen-type
inequalities utilizing log-convex and non-negative superquadratic functions.
In particular, we obtain the corresponding refinements of the Jensen-Mercer
operator inequality for such classes of functions.
Linear maps on *-algebras acting on orthogonal elements like derivations or anti-derivations
Authors: Ghahramani H. , Pan Z.
Published: April 2019

Let U be a unital *-algebra and ? : U ? U be a linear map behaving like a
derivation or an anti-derivation at the following orthogonality conditions
on elements of U: xy = 0, xy* = 0, xy = yx = 0 and xy* = y*x = 0. We
characterize the map ? when U is a zero product determined algebra. Special
characterizations are obtained when our results are applied to properly
infinite W*-algebras and unital simple C*-algebras with a non-trivial
idempotent.
Hyers-Ulam stability of hyperbolic Möbius difference equation
Authors: Nam Young
Published: April 2019

Hyers-Ulam stability of the difference equation with the initial point z0 as
follows zi+1 = azi+b/czi+d is investigated for complex numbers a,b,c
and d where ad-bc = 1, c ? 0 and a+d ?R\[-2,2]. The stability of the
sequence {zn}n?N0 holds if the initial point is in the exterior of a certain
disk of which center is ?d/c . Furthermore, the region for stability can be
extended to the complement of some neighborhood of the line segment between
-d/c and the repelling fixed point of the map z ? az+b/cz+d. This result
is the generalization of Hyers-Ulam stability of Pielou logistic equation.
Nonlinear sequential fractional differential equations in partially ordered spaces
Authors: Fazli Hossein , Nieto Juan
Published: April 2019

In this paper, some new partially ordered Banach spaces are introduced.
Based on those new partially ordered Banach spaces and applying some fixed
point theorems, we present a new approach to the theory of nonlinear
sequential fractional differential equations. An example illustrating our
approach is also discussed.
Existence results for Hadamard and Riemann-Liouville functional fractional neutral integrodifferential equations with finite delay
Authors: Abbas Mohamed
Published: April 2019

By using Leray-Schauder?s alternative, we study the existence and uniqueness
of solutions for some Hadamard and Riemann-Liouville fractional neutral
functional integrodifferential equations with finite delay, whereas the
uniqueness of the solution is established by Banach?s contraction principle.
An illustrative example is also included.
Convex sequences of higher order
Authors: Sofonea Daniel , Ţincu Ioan , Acu Ana
Published: April 2019

In this paper we study the class of convex sequences of higher order defined
using the difference operators and investigate their properties. The notion
of the convex sequence of order r ? N will be extended for r a real number.
Some necessary and sufficient conditions such that a real sequence belongs to
the class of convex sequences of higher order r ? R are introduced. Using
different types of means we will investigate the convexity of higher order
for real sequences.
Global stability of solutions in a reaction-diffusion system of predator-prey model
Authors: Luo Demou , Liu Hailin
Published: April 2019

In this article, we investigate the global asymptotic stability of a
reaction-diffusion system of predator-prey model. By applying the comparison
principle and iteration method, we prove the global asymptotic stability of
the unique positive equilibrium solution of (1.1).
Ricci solitons on η-einstein contact manifolds
Authors: De Uday , Suh Young , Majhi Pradip
Published: April 2019

The object of the present paper is to study Ricci solitons on ?-Einstein
contact manifolds. As a consequence of the main result we deduce some
important corollaries.
On contact CR-submanifolds of a cosymplectic manifold
Authors: Dirik Süleyman
Published: April 2019

In this paper, we study the differential geometry of contact CR-submanifolds
of a cosymplectic manifold. Necessary and sufficient conditions are given for
a submanifold to be a contact CR-submanifold in cosymplectic manifolds and
cosymplectic space forms. Finally, the induced structures on submanifolds
are investigated, these structures are categorized and we discuss these
results.
Infinitely many solutions for a fourth order singular elliptic problem
Authors: Makvand Chaharlang , Razani A.
Published: April 2019

Here, a fourth order singular elliptic problem involving p-biharmonic
operator with Dirichlet boundary condition is established where the exponent
in the singular term is different from that in the p-biharmonic operator. The
existence of infinitely many solutions is proved by the variational methods
in Sobolev spaces and the critical points principle of Ricceri. Finally, an
example is presented.
Filtering method for linear and non-linear stochastic optimal control of partially observable systems II
Authors: Poursherafatan Ali , Delavarkhalafi Ali
Published: April 2019

In this paper we studied stochastic optimal control problem based on
partially observable systems (SOCPP) with a control factor on the diffusion
term. A SOCPP has state and observation processes. This kind of problem has
also a minimum payoff function. The payoff function should be minimized
according to the partially observable systems consist of the state and
observation processes. In this regard, the filtering method is used to
evaluat this kind of problem and express full consideration of it. Finally,
presented estimation methods are used to simulate the solution of a
partially observable system corresponding to the control factor of this
problem. These methods are numerically used to solve linear and nonlinear
cases.
I2-convergence in T0 spaces
Authors: Lu Jing , Zhao Bin
Published: April 2019

In this paper, we introduce the notion of I2-convergence in T0 spaces, and
study the fundamental properties of I2-topology which is determined by
I2-convergence according to the standard topological approach. Then, we give
a sufficient condition for I2-convergence to be topological. Finally, we
introduce a special class of T0 spaces, called IDC-spaces, and then present
a sufficient and necessary condition for I2-convergence to be topological in
IDC-spaces.
Matrix transformations and application to perturbed problems of some sequence spaces equations with operators
Authors: de Malafosse , Fares Ali , Ayad Ali
Published: April 2019

Given any sequence z = (zn)n?1 of positive real numbers and any set E of
complex sequences, we write Ez for the set of all sequences y = (yn)n?1 such
that y/z = (yn/zn)n?1 ? E; in particular, cz = s(c) z denotes the set of all
sequences y such that y/z converges. Starting with the equation Fx = Fb we
deal with some perturbed equation of the form ? + Fx = Fb, where ? is a
linear space of sequences. In this way we solve the previous equation where
? =(Ea)T and (E,F) ? {(l?,c), (c0,l?), (c0,c), (lp,c), (lp,l?),
(w0,l?)} with p ? 1, and T is a triangle.
A note on dieudonne complete spaces
Authors: Chekeev Asylbek , Kasymova Tumar
Published: April 2019

In this paper, it is established a characterization of ?-normal coverings by
means of approximation of the Cech complete paracompacta, which are the
perfect preimages of completemetric spaces of weight ? ?. In particular,
this characterization generalizes to an arbitrary cardinal the result of A.
Garsia-Maynez [15].
Successive derivatives of Fibonacci type polynomials of higher order in two variables
Authors: Goubi Mouloud
Published: April 2019

The purpose of this work is to compute the successive derivatives of
Fibonacci type polynomials in two variables, polynomials these introduced by
G. Ozdemir, Y. Simsek in [3] and generalized by G. Ozdemir, Y. Simsek and G.
Milovanovic in [2] to a higher order. In addition we construct their
recursive formula different of that given in Theorem 2.2 [3] p.6. Finally we
define a novel generalized class of those polynomials similar to that given
in [1] and found its recursive formula.
Solutions for a singular elliptic problem involving the p(x)-Laplacian
Authors: Mahdavi Khanghahi , Razani A.
Published: April 2019

Here, a singular elliptic problem involving p(x)-Laplacian operator in a
bounded domain in RN is considered. Due to this, the existence of critical
points for the energy functional which is unbounded below and satisfies the
Palais-Smale condition are proved.
Slant ruled surfaces and slant developable surfaces of spacelike curves in Lorentz-Minkowski 3-space
Authors: Yıldırım Handan
Published: April 2019

In this paper, by means of the Lorentzian Frenet frame along a spacelike
curve in Lorentz-Minkowski 3-space, we construct slant ruled surfaces and
slant developable surfaces with different director curves which belong to
one-parameter families of the pseudo-spheres in this space. Moreover, for
each slant ruled surface with each director curve, we search if this slant
ruled surface has any singularities or not. Furthermore, for the cases in
which the singularities appear, we determine the singularities of
non-lightlike and non-cylindrical slant developable surfaces and also
investigate the singularities of slant ruled surfaces.
Resolvents of functions of operators with Hilbert-Schmidt hermitian components
Authors: Gil’ Michael
Published: April 2019

Let H be a separable Hilbert space with the unit operator I. We derive a
sharp norm estimate for the operator function (?I-f(A))-1 (? ? C),
where A is a bounded linear operator in H whose Hermitian component (A-
A*)/2i is a Hilbert-Schmidt operator and f(z) is a function holomorphic on
the convex hull of the spectrum of A. Here A* is the operator adjoint to A.
Applications of the obtained estimate to perturbations of operator
equations, whose coefficients are operator functions and localization of
spectra are also discussed.
On lower density type operators and topologies generated by them
Authors: Hejduk Jacek , Lindner Sebastian , Loranty Anna
Published: April 2019

In the paper we concentrate on lower, almost-lower and semi-lower density
operators on measurable spaces. The existence of maximal element in the
families of such operators is investigated. Moreover, we consider topologies
generated by the above operators. Among others the existence of the greatest
of such topologies (with respect to the inclusion) is studied.
Statins Promote Interleukin-1β–Dependent Adipocyte Insulin Resistance Through Lower Prenylation, Not Cholesterol
Authors: Henriksbo Brandyn D. , Tamrakar Akhilesh K. , Xu Joshua , Duggan Brittany M. , Cavallari Joseph F. , Phulka Jobanjit , Stampfli Martin R. , Ashkar Ali A. , Schertzer Jonathan D.
Published: April 2019

Statins lower cholesterol and adverse cardiovascular outcomes, but this drug class increases diabetes risk. Statins are generally anti-inflammatory. However, statins can promote inflammasome-mediated adipose tissue inflammation and insulin resistance through an unidentified immune effector. Statins lower mevalonate pathway intermediates beyond cholesterol, but it is unknown whether lower cholesterol underpins statin-mediated insulin resistance. We sought to define the mevalonate pathway metabolites and immune effectors that propagate statin-induced adipose insulin resistance. We found that LDL cholesterol lowering was dispensable, but statin-induced lowering of isoprenoids required for protein prenylation triggered NLRP3/caspase-1 inflammasome activation and interleukin-1β (IL-1β)–dependent insulin resistance in adipose tissue. Multiple statins impaired insulin action at the level of Akt/protein kinase B signaling in mouse adipose tissue. Providing geranylgeranyl isoprenoids or inhibiting caspase-1 prevented statin-induced defects in insulin signaling. Atorvastatin (Lipitor) impaired insulin signaling in adipose tissue from wild-type and IL-18−/− mice, but not IL-1β−/− mice. Atorvastatin decreased cell-autonomous insulin-stimulated lipogenesis but did not alter lipolysis or glucose uptake in 3T3-L1 adipocytes. Our results show that statin lowering of prenylation isoprenoids activates caspase-1/IL-1β inflammasome responses that impair endocrine control of adipocyte lipogenesis. This may allow the targeting of cholesterol-independent statin side effects on adipose lipid handling without compromising the blood lipid/cholesterol-lowering effects of statins.
Genetic Regulation of Enoyl-CoA Hydratase Domain-Containing 3 in Adipose Tissue Determines Insulin Sensitivity in African Americans and Europeans
Authors: Sharma Neeraj K. , Chuang Key Chia-Chi , Civelek Mete , Wabitsch Martin , Comeau Mary E. , Langefeld Carl D. , Parks John S. , Das Swapan K.
Published: April 2019

Insulin resistance (IR) is a harbinger of type 2 diabetes (T2D) and partly determined by genetic factors. However, genetically regulated mechanisms of IR remain poorly understood. Using gene expression, genotype, and insulin sensitivity data from the African American Genetics of Metabolism and Expression (AAGMEx) cohort, we performed transcript-wide correlation and expression quantitative trait loci (eQTL) analyses to identify IR-correlated cis-regulated transcripts (cis-eGenes) in adipose tissue. These IR-correlated cis-eGenes were tested in the European ancestry individuals in the Metabolic Syndrome in Men (METSIM) cohort for trans-ethnic replication. Comparison of Matsuda index–correlated transcripts in AAGMEx with the METSIM study identified significant correlation of 3,849 transcripts, with concordant direction of effect for 97.5% of the transcripts. cis-eQTL for 587 Matsuda index–correlated genes were identified in both cohorts. Enoyl-CoA hydratase domain-containing 3 (ECHDC3) was the top-ranked Matsuda index–correlated cis-eGene. Expression levels of ECHDC3 were positively correlated with Matsuda index, and regulated by cis-eQTL, rs34844369 being the top cis-eSNP in AAGMEx. Silencing of ECHDC3 in adipocytes significantly reduced insulin-stimulated glucose uptake and Akt Ser473 phosphorylation. RNA sequencing analysis identified 691 differentially expressed genes in ECHDC3-knockdown adipocytes, which were enriched in γ-linolenate biosynthesis, and known IR genes. Thus, our studies elucidated genetic regulatory mechanisms of IR and identified genes and pathways in adipose tissue that are mechanistically involved in IR.
Effects of pH and Application Technique of In-office Bleaching Gels on Hydrogen Peroxide Penetration into the Pulp Chamber
Authors: Balladares L , Alegría-Acevedo LF , Montenegro-Arana A , Arana-Gordillo LA , Pulido C , Salazar-Gracez MT , Reis A , Loguercio AD
Published: April 2019

Objective:

This in vitro study aimed to quantify the penetration of hydrogen peroxide (HP) into the pulp chamber in teeth submitted to in-office bleaching with varied pH and application techniques. The color change and pH of the in-office bleaching product during application was also evaluated.

Methods and Materials:

Ninety-six human premolars were used and randomly divided into 10 groups (n=9) according to the following combination of factors: pH of in-office bleaching agents (two neutral/alkaline pH: Opalescence Boost 38% and Whiteness HP Blue 35% and three acidic pH: Whiteness HP Maxx 35%, Lase Peroxide Sensy 35%, and Total Blanc Office 35%) and application modes (for 3 × 15 minutes [3×15] and 1 × 45 minutes [1×45]). An additional group of non-bleached teeth (control; n=6) was added. First, all teeth were sectioned 3 mm from the cementoenamel junction and the pulp tissue was removed. An acetate buffer was placed in the pulp chamber of all teeth. After bleaching, this solution was transferred to a glass tube in which HP was allowed to react with other components, resulting in a pink solution. The optical density of this pink solution was measured using ultraviolet-visible spectroscopy and converted into amount of HP. Color change before and 1 week after bleaching was evaluated using a digital spectrophotometer. A pH meter with a 6-mm circular and flat surface was used in contact with the enamel surface to quantify the pH of the bleaching gels during application. Data were analyzed using two-way analysis of variance and Tukey tests (α=0.05).

Results:

Overall, lower mean HP penetration values were observed for Opalescence Boost 38% and Whiteness HP Blue 35% compared with other bleaching gels (p<0.05). Opalescence Boost 38% and Whiteness HP Blue 35% were not influenced by the application technique (p>0.05). However, lower mean HP penetration values were observed for Whiteness HP Maxx 35%, Total Blanc Office 35%, and Lase Peroxide Sensy 35% when using the 3×15 application technique compared with the 1×45 technique (p<0.05). Significant whitening was detected and no significant difference of color change was observed between groups (p>0.54). The pH did not change during the 3×15 application technique; however, all acidic bleaching gels significantly decreased in pH when applied for 1×45 (p<0.01).

Conclusions:

The amount of HP that reaches the pulp chamber was lower when neutral/alkaline pH gels were used, independently of the application technique. When considering acidic pH gels, it is preferable to use the 3×15 application technique, mainly because longer application time (1×45) results in lower pH. No difference was observed between groups with regards to color change.
Laser welding of AlSi12 and S355 with a 10 kW single mode fiber laser
Authors: Drechsel Jan , Schille Joerg , Hanelt Kevin , Loeschner Udo
Published: April 2019

In this study, fast welding of an aluminum alloy AlSi12 and a structural steel S355 was investigated using a single mode fiber laser system delivering a maximum laser power of 10 kW with a laser beam quality of M2 = 2. The laser beam was focused with a welding head OL YW50 F500 HQ from Precitec GmbH & Co. KG resulting in a spot size of 70 μm, thus delivering a maximum intensity up to several 108 W/cm2 to the workpiece surface. Therefore, narrow weld seams and large penetration depths could be achieved. However, detrimental effects like humping, spiking, spatter tendency, pore formation, and hot cracking, reported by Li et al. [J. Mater. Process. Technol. 214, 565–570 (2014)] and Zhang et al. [Optic Laser Technol. 98, 97–105 (2018)], have been observed at some parameter settings. The welding experiments performed on AlSi12 with a laser beam power of 10 kW, focus position on the material surface, and welding speeds from 2 to 10 m/min reveal penetration depths of about 12 mm independently from the distinct welding speed. Therefore, the weld bead width was 5.5 mm for 2 m/min, thus decreasing to 1.1 mm at the highest welding speed of 10 m/min. By shifting the focus position inside the material, the penetration depth rises significantly and reached a maximum of 17.5 mm for a welding speed of 2.5 m/min and a focus position of 6 mm underneath the sample surface. For this, the weld cross section width, measured at half of the penetration depth, was 2.2 mm. For the structural steel S355, the maximum penetration depth was determined to be 19.5 mm, here with 10 kW laser power, focus position on the material surface, and a comparable welding speed of 2.4 m/min. Therefore, a weld bead width of about 0.75 mm was measured, while the weld cross section width was about 0.55 mm. Finally, first butt welds of 19.5 mm thick S355 samples were generated characterized by smooth welds with a bead width of about 2.5 mm and a weld cross section width of 0.5 mm, respectively.
Surface improvement of laser solid forming Inconel 718 by electrochemical machining
Authors: Guo Pengfei , Lin Xin , Huang Weidong
Published: April 2019

Surface improvement of laser solid forming Inconel 718 by electrochemical machining was investigated. Microstructure observation shows that there exists a fiber texture and the ⟨001⟩ direction is parallel to the build direction. Furthermore, the alloying elements of Nb, Mo, and Ti are rich in interdendritic regions, and γ/Laves eutectic phase and γ/carbides eutectic phase are located in the interdendritic regions. Besides, the surface morphologies are wavy due to the overlapping of the scanning tracks and the stacking effect between deposited layers. Electrochemical results show that the top surface requires less time to obtain a smooth surface profile than the side surface due to their original surface profiles difference and the less volume of the bulges on the top surface. The numerical simulation indicates that the uneven surface profiles become smooth owing to the fact that the surface peaks dissolve faster than the surface depressions. These results provide an insight into improving the surface quality of the as-deposited Inconel 718.
ISOLASI DAN UJI POTENSI BAKTERI FIKSASI N NON SIMBIOTIK ASAL TANAH KEBUN KELAPA SAWIT DENGAN APLIKASI TANDAN KOSONG DAN LIMBAH CAIR PABRIK KELAPA SAWIT
Authors: Islam Huryatul , Nelvia Nelvia , Zul Delita
Published: April 2019

This study aimed was to isolate non-symbiotic N-fixation bacteria from oil palm plantations fertilized with empty fruit bunch (EFB) and palm oil mill effluent (POME) and to analyze their potency. The soil samples were taken by purposive sampling method from 4 different treatments are mixed application (EFB + POME), EFB application, POME application and without application (C), and each location was taken 3 times. Isolation of non-symbiotic N-fixation bacteria was perfomed by using NFb and Ashby's media. The parameters observed were bacterial cells number, number of isolates and their potency. The cells number of non-symbiotic N fixation bacteria at the application sites Mixed> POME application> EFB application> C. A total of 18 isolates were isolated and potentially as a nitrogen fixing bacteria characterized by the ability of isolates to change the color of the NFb medium from green to blue and form pellicle. The highest potential isolates are NFBC232, NFBK21, and NFBC33.
Nutritional Defciencies and Their Behavioral Risk Factors in Alcohol Withdrawal Patients in Mongolia
Authors: Buddorj Purevjargal , Davaasuren Oyunsuren , Galsanjav Otgon , Luvsandorj Erdenebayar , Zuunnast Khishigsuren
Published: April 2019

Objectives: This study aims to determine some nutritional and vitamin deficiencies, and to define some dietary factors affecting alcohol withdrawal patients. Methods: Data were collected from patients with alcohol withdrawal delirium admitted to 3 addiction care clinics in Ulaanbaatar. A total of 162 subjects were selected randomly with a ratio 1:1 to this case-control study. Nutrient intake was determined by questioning the patients regarding their food intake during the 24 hours prior to admission. Results: In patients with alcohol withdrawal delirium 13 nutrients from food were significantly lower. Two risk behaviors had weak and moderate effects leading to a statistically significant decrease in 11 nutrients. The risk of deficiency of fat and tryptophan intake was 17.54-22 times in drinking while hungry. Refusing food while drinking had a moderate effect in decreasing 9 nutrients by more than 57.8% in alcohol withdrawal patients. Conclusion: The level of 13 nutrients and vitamins from food were lower in patients with alcohol withdrawal delirium (p<.001). The dietary risk behaviors related to drinking were defined that lead to decreased fat, zinc, vitamin B12, tryptophan, and cysteine from their diet.
Relationship between Masticatory Performance and Dental Caries Status in 4-Year-Old Children
Authors: Ganbaatar Nomin , Bazar Oyuntsetseg , Altansukh Suvdanchimeg , Bayarmagnai Namuun , Okazaki Yoshihide
Published: April 2019

Objectives: Our study aimed to evaluate the relationship between masticatory performance and dental caries in 4-year-old children. Methods: A total of 100 4-year-old children of both genders were selected from 3 kindergartens. The data collected included the masticatory performance test, oral examination and sociodemographic data including aspects of their dental care and eating habits. Masticatory performance was assessed using chewing gum. Participants chewed a piece of gum for 3 minutes and then it was weighed, recognizing that during mastication the soluble part of the gum dissolves reducing its weight. The results were compared among the participants examining the potential factors affecting mastication. Results: The mean the number of decayed filled teeth was 3.8 teeth. Chewed gum mean weight was 0.57 g ±0.49 (boys vs. girls, 0.58±0.03 vs. 0.57±0.05 g, NS). There was a positive correlation between gum weight and decayed teeth (r=.57, p<.0001). Linear regression showed that gum weight increased by 0.005 g for every decayed tooth (p<.0001). Conclusion: A significant positive correlation was observed between masticatory performance and the number of decayed teeth. Our linear regression results clearly showed that number of decayed teeth was associated with decreased masticatory performance as accessed by our gum weighing method.
Measurement of Liver Fibrosis in Chronic Hepatitis D: Comparison of Invasive and Non-Invasive Methods
Authors: Gidaagaya Sarantuya , Dorj Sumiya , Jamsranjav Selenge , Dungubat Erdenetsogt , Batmunkh Munkhhbat , Namdag Bira
Published: April 2019

Objectives: The aim of this study was to compare non-invasive methods in the detection of hepatic fibrosis in patients with chronic hepatitis delta. Methods: Twelve patients with chronic hepatitis delta who visited the Gastroenterology Department at the Intermed Hospital, were studied. Clinical and histological data were evaluated and serum indirect fibrosis markers including AST to ALT ratio, AST-to-Platelet Ratio, Fibrosis-4 index scores were calculated. Serum Mac-2 binding protein glycosylation isomer and liver stiffness measurements were performed in all participants. Results: Histological scoring showed that 16.7%, 41.7% and 41.7% of participants had F2, F3, and F4 stage of liver fibrosis, respectively. All participants were divided into groups; cirrhotic (F4) and non-cirrhotic (F0-F3). The median AST to ALT ratio in cirrhotic vs. noncirrhotic patients was 1.4 vs. 1.1 (p=.67), AST-to-Platelet ratios were 0.7 vs. 1.1 (p=.48), and Fibrosis-4 index scores were 1.8 vs. 1.6 (p=.82) in non-cirrhotic patients. Median Mac-2 binding protein glycosylation isomer levels in the cirrhotic group 1.3 cut-off index vs. 1.4 cut-off index in the non-cirrhotic group (p=.85). The median liver stiffness was 12.6 kPa in cirrhotic patients while 8.1 kPa in non-cirrhotic patients (p=.05). Conclusion: Non-invasive serum markers were less accurate in determining fibrosis in chronic hepatitis delta patients. Liver stiffness measurement was superior to the non-invasive serum markers.
Germany and Transformation Processes in Security: the Approach of Heiko Maas
Authors:   Institute of Europe, Russian Academy of Sciences, Sindeev Aleksey Aleksandrovich
Published: April 2019

The research analyzes the proposals of the Foreign Minister of the Federal Republic of Germany Heiko Maas in the field of security. The author proves that the well-known arguments about the unpredictable nature of tectonic changes in the world and failure of different actors to address security challenges must be viewed very critically. The promotion of the Alliance of Multilateralists by H. Maas and the For-eign Office of Germany makes it evident that Ger-many is looking for new effective alliances and part-ners. To fulfill the purpose of the study, all available interviews of the Foreign Minister Heiko Maas have been studied. The author refrains from the theoreti-cal analysis of the subject matter and practical ad-vice since the approach of H. Maas is one possible future option, notwithstanding its official nature.
Managing the Investigation of Terrorist Attack and Hostage-Taking
Authors:   Kuban State Agrarian University, Shvets Sergey Vladimirovich , Shpak Nina Mikhaylovna ,   Kuban State Agrarian University
Published: April 2019

The study looks at the main types of common terror-ist activities today. The paper identifies the recent trends in the behavior of terrorist groups such as information psychological impacts, an increased geographical spread of terrorism, better managed terrorist attacks (the creation of global and regional terrorist centers). All these difficulties should be considered at the initial stage of the investigation. Based on the information available, an algorithm for further investigation is being developed. The pro-gress of an investigation is described in two typical situations: terrorist bombings and reports of possi-ble terrorist attacks. Negotiating is regarded as a pivotal stage of a hostage-taking investigation; the characteristics of this process are determined. The research emphasizes that the involvement of inves-tigation teams enhances the effectiveness of a ter-rorist offense investigation since it allows one to simultaneously handle a large amount of crime-related information, rationally plan and carry out investigative actions.
Basque Nationalism: the Main Stages of Evolution and the Current Situation
Authors:   Russian Presidential Academy of  National Economy and Public Administration, Epshteyn Vitaly Anatolievich , Menshikov Petr Vitalyevich ,   (University) of the Ministry of Foreign Affairs of  the Russian Federation, Vilchinskii Anton Sergeevich ,   Russian Presidential Academy of  National Economy and Public Administration
Published: April 2019

Nowadays, many states put the issue of nationalist movements on the agenda. The research describes the evolution of Basque nationalism since its estab-lishment up to 2018. The authors conduct a retro-spective analysis and highlight the key political, economic, and social prerequisites for the develop-ment of Basque nationalist doctrine. Its main stages are distinguished. Basque and Catalan independ-ence movements are compared to each other based on public opinion research carried out by Spanish agencies. Particular attention is paid to the armed struggle of the Basques for their independence from Spain in order to create a cross-border state. Be-sides, the emphasis is placed on the methods used by the Kingdom of Spain, France, and Europol to combat Basque terrorism. In conclusion, the authors reveal the reasons for the cessation of armed con-frontation between ETA and Madrid.
Interethnic Relations among School Students of Nizhnevartovsky District from the Teachers’ Perspective
Authors:   Surgut State University, Markhinin Vasily Vasilyevich , Ushakova Nadezhda Vladimirovna ,   Surgut State University
Published: April 2019

The paper presents the results of a longitudinal study on interethnic relations and social well-being of school students conducted in Nizhnevartovsky District of the Khanty-Mansiysk Autonomous Okrug – Yugra in 2014-2018. Special attention is paid to the views of high school teachers on interethnic rela-tions at school and their harmonization efforts. The research investigates interethnic problems, the forms of interethnic conflicts, and the spread of extremism and nationalism among school students. The paper describes the state of educational activi-ties intended to prevent any school or ethnic con-flict. The problems of relationship between students are analyzed. The integration concerns of migrant children in the local community are determined as well. The research identifies the attitude of teachers to various approaches to undertaking ethnic and cultural activities at school.
Modern Models of Competition and Its Assessment Methods in Social and Economic Systems
Authors:   Kuban State Technological University, Khoroshun Kristina Vyacheslavovna , Gluschenko Tatiana Evgenyevna ,   Krasnodar Cooperative Institute (branch) of  Russian University of Cooperation
Published: April 2019

It is a well-known fact that fair competition is bene-ficial to producer, consumer, and society as a whole. It plays a key role in developing the economy, tech-nology, fields of human and societal activity that makes it necessary to find its new modeling and assessment methods. The purpose of the study is to create mathematical models and objective assess-ment method of competition in major social and economic systems. The research identifies the new quantitative indicators describing the level and ef-fectiveness of competition. The novel universal ap-proach can be applied to any scope of human activi-ty and any social and economic system at the re-gional, federal, and state level. The study was mainly conducted by methods of set theory, mathematical statistics (scree plot method), and latent variables. The system, qualimetric, probabilistic and statistical approaches served as its methodological basis.
Trigo y revolución verde en el noroeste de México (1930-1970)
Authors: Cerutti Mario
Published: April 2019

Nuestro análisis se concentrará en los cambios registrados en el noroeste mexicano desde que la gran irrigación quedó a cargo del Estado. Se pondrá atención en los objetivos que llevaron a montar dichos sistemas de irrigación en el norte (que ocupa el 60% del territorio); en su construcción en el Valle del Yaqui (Sonora), que expandió radicalmente la frontera agrícola del noroeste; en la irrupción de la revolución verde y de su más explosiva expresión: el trigo y en la herencia institucional de Norman Borlaug. El artículo se cierra con las discusiones sobre el impacto socio ambiental derivado de la revolución verde.
Agricultura, cultura del oasis y megaminería en Mendoza. Debates y disputas
Authors: Wagner Lucrecia
Published: April 2019

Mendoza es una de las provincias argentinas donde el rechazo a la megaminería ha sido más exitoso. Este trabajo tiene como objetivo analizar la cultura mendocina del oasis como uno de los fundamentos de la oposición a esta actividad. Basándonos en fuentes documentales, producidas principalmente por el Estado provincial, y en un trabajo etnográfico que recupera testimonios de quienes se oponen a la megaminería, concluimos que el rechazo a esta actividad tiene un arraigo en ciertas características de la historia provincial, que combinadas con nuevas demandas socioambientales, han dado lugar a una de las resistencias a la megaminería más trascendentes de la Argentina.
Género y migraciones. Un estudio sobre mujeres migrantes tarijeñas en torno al mercado de trabajo hortícola de Apolinario Saravia en la provincia de Salta
Authors: Ataide Soraya
Published: April 2019

En este artículo nos proponemos analizar la incidencia del sistema de género en origen/destino sobre los proyectos migratorios y las experiencias laborales de mujeres tarijeñas de origen campesino. Particularmente de aquellas mujeres que migraron entre la década de 1980 y 2000,de forma asociacional, a través de redes masculinas hacia distintas zonas del Noroeste argentino y se vincularon como trabajadoras en la actividad hortícola de Apolinario Saravia (provincia de Salta). Con dicho objetivo optamos por una estrategia metodológica etnográfica,utilizando como técnicas de obtención de datos principalmente la entrevistaen profundidad y la observación participante.
La David Soto-Fernández y José-Miguel Lana-Berasáin (eds.) Del pasado al futuro como problema. La historia agraria contemporánea española en el siglo XXI. En el XXX aniversario de la SEHA: Monografías de Historia Rural, Nº 14. Sociedad de Estudios de Historia Agraria (SEHA). Zaragoza: Prensas de la Universidad de Zaragoza
Authors: Garrido Luis María
Published: April 2019

Resumen
Automatic Ear Detection and Segmentation over Partially Occluded Profile Face Images
Authors: Cintas Celia , Delrieux Claudio , Navarro Pablo , Quinto-Sánchez Mirsha , Pazos Bruno , Gonzalez-José Rolando
Published: April 2019

Automated, non invasive ear detection in images and video is becoming increasingly required in several contexts, including nonivasive biometric identification, biomedical analysis, forensics, and many others. In biometric recognition systems, fast and robust ear detection is a crucial step within the recognition pipeline. Existing approaches to ear detection are susceptible to fail in the presence of typical everyday situations that prevent a crisp imaging of the ears, like partial occlusions, ear accessories, or uncontrolled camera and illumination conditions. Even more, most of the proposed solutions work efficiently only within a previously detected rectangular region of interest, which limits their applicability and lowers the accuracy of the overall detection. In this paper we evaluate the use of Convolutional Neural Networks (CNNs) together with Geometric Morphometrics (GM) for automatic ear detection in the presence of partial occlusions, and a Convex Hull algorithm for the ear area segmentation. A CNN was trained with a set of ear images landmarked by experts using GM to achieve high consistency. After training, the CNN is able to detect ears over profile faces, even in the presence of partial occlusions. We analyze the performance of the proposed ear detection and segmentation method over partially occluded ear images using the CVL Dataset
COMPARATIVE ANALYSIS OF THE EP`S ACTIVITIES AT THE PRE-HOSPITAL AND HOSPITAL STAGES
Authors: Teplov V. M. , Minnullin I. P. , Kolomoytsev V. V. , Razumnyi N. V. , Bagnenko S. F.
Published: April 2019

Emergency medical education is becoming increasingly challenging as a result of shifting the workplace of emergency physician from ambulance to Emergency Department. Prehospital specialist rarely uses infusion therapy, instrumental methods of treatment and diagnostic independently. Comparison shows the need of longer education for hospital practices, because additional ultrasound and reanimatology trainings are required.
THE USE OF THE PRINCIPLE OF VESTIBULAR NEUROMODULATION IN COMPLEX TREATMENT OF PHARMACORESISTENT DEPRESSION (clinical observation)
Authors: Naryshkin A. G. , Galanin I. V. , Seliverstov R. Yu. , Zaraisky M. I. , Gurchin A. F.
Published: April 2019

Pharmacoresistent depression is still an unsolved problem. Various non-pharmacological methods are used to solve it. There are invasive and non-invasive approaches to solving this problem. The article publishes a clinical case in which pharmacoresistance was overcome by using one of the methods of vestibular neuromodulation – chemical intratimpanal destruction of vestibular receptors.
COLON ATRESIA IN COMBINATION WITH HIRSCHSPRUNG’S DISEASE: A RARE CLINICAL CASE
Authors: Karavaeva S. A. , Kagan A. V. , Kotin A. N. , Kesaeva T. V.
Published: April 2019

Introduction. Hirschsprung’s disease is a congenital anomaly characterized by the absence of ganglion cells in submucosal and intramuscular layers of intestinal wall that leads to the intestinal obstruction. 70–80 % of cases are isolated malformation but it can be combined with chromosomal abnormalities and other malformations. Coexistence of Hirschsprung’s disease with intestinal atresia is extremely rare. It can cause significant difficulties in diagnostics and treatment.

Material and methods.Patient A, a boy, was transferred to the surgical department at the age of two days with a history of intestinal obstruction. He had abdominal X-ray studies: intestinal obstruction. The contrast enema showed microcolon that was coiled in the pelvis. Patient was prepared to the surgical treatment. Intraoperatively colonic atresia was identified at 10 sm from the ileocecal valve. A double colostomy was performed to the child and biopsy on the level of mucous fistula was taken. Histological study showed the aganglionosis of the distal colon. At the age of 4 months, the patient underwent Soave-Swenson endorectal pullthrough procedure with intraoperative extended express-biopsy that confirmed the absence of ganglion cells in whole distal bowel. The aganglionic part was resected, the ileocecal valve with the part of the colon of 10 cm long was mobilized and the endorectal bringing the colon down to the perineum was performed by Soave – Swenson. Postoperative recovery was uneventful.

Results.A high index of suspicion is required to promptly diagnose Hirschsprung’s disease in a child with colonic atresia despite the rare combination of these two anomalies. In this case the histological study allowed to recognize association of colonic atresia with Hirschsprung’s disease and helped to avoid complications after further surgery.

Conclusions. Early detection of coexisting of these two anomalies helps to prevent the development of serious postoperative complications.
CLINICAL AND MORPHOLOGICAL CHARACTERISTICS OF THE CASE OF I NTRA-PULMONARY METASTASES OF BENIGN LEIOMYOMA
Authors: Reshetov A. V. , Klimenko V. N. , Elkin A. V. , Mitrofanova L. B. , Antonova I. V. , Konovalov P. V.
Published: April 2019

Uterine leiomyoma is rarely accompanied by the detection of distant metastases, including lungs. The basis of modern strategies of diagnosis of metastatic leiomyoma is the carrying out incisional or excisional biopsy of identified lesions with the subsequent performance of the immunohistochemical studies. Taking into account the indolent course of the disease, in modern practice, the main tactics of management of such patients is a long-term follow-up with the appointment of antiestrogen therapy.
Pengaruh Kinerja Keuangan Perusahaan Terhadap Devidend Payout Ratio
Authors: Gean Karlos Purba Iwan Firdaus,
Published: April 2019

This research was conducted to examine the effect of Currrent ratio (CR), Return on asset (ROA), Debt to Equity Ratio (DER) and Sales Growth to Dividend Payout Ratio (DPR). The object for this research is pharmaceutical and cosmetics sub-sector  listed on the Indonesia Stock Exchange in the period 2012-2016. This research was conducted using quantitative menthod with total 30 sample of research were determined by saturated sampling. Method of hypothesis testing using t-test. This research use Currrent ratio (X1), Return on asset (X2), Debt to Equity Ratio (X3), Sales Growth (X4) as independent variable and Dividend Payout Ratio as dependent variable. The results of this research is Return on asset positive and has significant effect to Dividend Payout Ratio, for Currrent ratios and Sales Growth a positive but significant effect on Dividend Payout Ratio,  whlile the Debt to Equity Ratio positive and has no significant effect to Dividend Payout Ratio.
The Consummate Value of (Manitoba Chamber Orchestra’s) Classical Music Recordings
Authors: Sweatman Conrad
Published: April 2019

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Analisis Kapasitas Saluran Drainase Pada Saluran Primer Medokan-Semampir Surabaya
Authors: Harmani Evy , Wiyono Wiyono
Published: April 2019

Pertumbuhan penduduk Kota Surabaya yang tinggi mengakibatkan banyak lahan dijadikan tempat tinggal atau lokasi pemukiman bagi masyarakat sehingga terjadi perubahan tata guna lahan. Lahan persawahan telah berubah menjadi pemukiman sehingga mengakibatkan lahan untuk resapan air semakin mengecil dan koefisien pengaliran semakin membesar. Daerah Medokan Semampir adalah satu kawasan yang terkena dampak dari perubahan tersebut. Berdasarkan permasalahan tersebut, maka dilakukanlah studi analisis kapasitas saluran drainase di Medokan-Semampir Surabaya. Pada studi analisis ini dimaksudkan untuk mengetahui apakah saluran drainase Medokan-Semampir Surabaya masih bisa menampung debit air hujan yang terjadi setelah terjadi perubahan tata guna lahan yang berakibat koefisien pengaliran semakin membesar. Dengan menggunakan periode ulang hujan 1.2, 2, 5 dan 10 tahunan dan dengan cara meninjau disetiap segmen aliran untuk mengetahui koefisien pengalirannya maka didapatkan hasil pada hujan dengan periode ulang 1,2 tahun pada segmen 3, segmen 8, segmen 9 dan segmen 10 mengalami luapan. Dan dengan hujan periode ulang 2, 5 dan 10 tahun pada segmen 3, segmen 4, segmen 8, segmen 9 dan segmen 10 mengalami luapan. Saluran yang mengalami luapan tersebut bisa dilakukan pelebaran saluran atau memperdalam saluran agar kapasitas saluran bertambah dan saluran bisa berfungsi sebagai mana mestinya
Analisa Dampak Optimalisasi Waktu Terhadap Biaya Pekerjaan Struktur Pembangunan Hotel Amaris-Taman Apsari Surabaya
Authors: Yakin Kusnul , Sandi Patrisius Valdo , Bustamin Maulidya Octaviani
Published: April 2019

Dalam kegiatan proyek konstruksi terdapat tiga hal yang menjadi faktor pengaruh terhadap keberhasilan dan kegagalan yaitu waktu, biaya dan mutu. Keberhasilan suatu proyek biasanya dilihat dari waktu penyelesaian yang tergolong singkat tanpa mengabaikan mutu hasil pekerjaan proyek. Pengelolaan proyek yang tepat dan teratur diperlukan untuk memastikan waktu, biaya, dan mutu proyek. Hal ini untuk menghindari berbagai hal yang tidak diinginkan seperti: keterlambatan penyelesaian, membengkaknya biaya, gagal mutu, dan lain sebagainya yang bisa saja berimbas pada kegagalan proyek dan munculnya biaya denda. Tujuan dari penelitian ini adalah menghitung perubahan biaya dan waktu pelaksanaan proyek dengan alternatif penambahan jam kerja lembur membandingkan hasil antara normal dengan perubahan biaya sesudah penambahan jam kerja (lembur). Data-data yang digunakan dalam penelitian ini adalah data sekunder yang diperoleh dari kontraktor pelaksana. Analisis data menggunakan program Microsoft Project 2007 dan metode time cost trade off (TCTO). Hasil dari analisis adalah lintasan kritis dan kenaikan biaya akibat dari penambahan jam kerja (lembur) sedangkan hasil dari metode time cost trade off adalah percepatan durasi dan kenaikan biaya akibat percepatan durasi dalam setiap kegiatan yang dipercepat. Hasil penelitian ini menunjukkan bahwa waktu dan biaya total proyek pada kondisi normal sebesar 117 hari dengan biaya Rp 8.000.080.361,56 dengan penambahan 3 jam kerja lembur didapaktan durasi crashing 98 hari dan dengan biaya sebesar Rp 8,147,282,633.64, pada penambahan 5 jam kerja lembur didapatkan durasi crashing 95 hari dan biaya sebesarRp 8.157.344.186,22.