bluuebunny/crossref_metadata_2025 huggingface dataset:
Indio (denominación) = Indian (denomination)
Authors: Apaza Huanca Yaneth Katia
Published: March 2018

ResumenEl artículo mostrará cómo las distintas denominaciones: indio, pueblo indio o indígena, campesino, comunidad indígena u originaria, etnia, nación y nacionalidad, otorgadas a los aymaras, quechuas (Bolivia) y kichwas (Ecuador) son una deconstrucción histórica social de casi cinco siglos hacia su identidad milenaria e histórica, que causan tres efectos: a) dominación (tutela), b) desestructuración territorial, por ende, desarticulación político-administrativa, económica y social, y c) limitación en su lucha por la emancipación.Así, las distintas denominaciones usadas por los Estados plurinacionales de Bolivia y Ecuador, son un lenguaje hegemónico-histórico deconstructivo por medio de significantes y significaciones que impregnará un “signo” colonial y postcolonial a los jaques, runas, ayllus, markas, suyus, señoríos aymaras, quechuas, y kichwas convirtiéndose a largo plazo en un paradigma de la denominación y dominación.Palabras clave: Aymaras, quechuas, kichwas; paradigma de la denominación y dominación; significante; significación; colonial; postcolonial; deconstrucción; tierra y territorio.Abstract: The article will show how the different denominations: Indian, Indian or indigenous people, peasant, indigenous or native community, ethnicity, nation and nationality, granted to the Aymaras, Quechuas (Bolivia) and Kichwas (Ecuador) are a social historical deconstruction of almost five centuries towards its millenarian and historical identity, which causes three effects: a) domination (guardianship), b) territorial destructuration, therefore, political-administrative, economic and social disarticulation, and c) limitation in its struggle for emancipation.Thus, the different denominations used by the Plurinational States of Bolivia and Ecuador, are a hegemonic-historical deconstructive language by means of signifiers and significations that will impregnate a colonial and postcolonial "sign" to the jaques, runas, ayllus, markas, suyus, señoríos Aymaras, Quechuas, and Kichwas become a paradigm of denomination and domination over the long term.Keywords: Aymaras, Quechuas, Kichwas; paradigm of denomination and domination; significant; significance; colonial; postcolonial; of construction; land and territory.
El Código Penal alemán (Das deutsches Strafgesetzbuch) = The german Criminal Code (Das deutsches Strafgesetzbuch)
Authors: Cobos Gómez de Linares Miguel Ángel
Published: March 2018

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OKUL ÖNCESİ ÖĞRETMEN ADAYLARININ MÜZİK EĞİTİMİ DERSLERİNE İLİŞKİN GÖRÜŞLERİ - OPINIONS OF PRESCHOOL TEACHER CANDIDATES ABOUT MUSIC EDUCATION LESSONS
Authors: Yıldız Gökay
Published: March 2018

Okul
öncesi eğitimin çocukların tüm gelişim alanlarını kapsayacak şekilde
düzenlenmesi ve uygulanması iyi yetişmiş, donanımlı okul öncesi öğretmenlerin
varlığı ile mümkündür. Okul öncesi dönemde, tüm gelişim alanlarını desteklemesi
bakımından amaçları ve hedefleri çocukların müziksel gelişim özelliklerine göre
belirlenmiş müzik eğitimi verilmesi büyük bir önem taşımaktadır. Bunun
gerçekleşebilmesi ise kapsamlı, dengeli, çocukların müziksel gelişim
özelliklerini gözeten bir eğitim programı ve bu programı yürütebilecek düzeyde
müzik donanımına sahip okul öncesi öğretmenlerle mümkündür. Okul
öncesi öğretmen adaylarının, lisans düzeyinde almış oldukları müzik eğitimi
sonucunda müziksel açıdan ne ölçüde yeterli olarak yetiştirildikleri,
kendilerini ne ölçüde yeterli gördükleri ve algıladıkları önem taşımaktadır.
Buradan hareketle bu çalışmada okul öncesi öğretmen adaylarının, lisans
eğitimlerinin üçüncü yılında iki yarıyıl boyunca aldıkları Müzik Eğitimi I ve
Müzik Eğitimi II derslerine yönelik görüşlerinin belirlenmesi amaçlanmıştır. Bu
çalışma, tarama modeli kullanılarak gerçekleştirilmiş betimsel bir
araştırmadır. Araştırmanın çalışma grubunu, 2016-2017 eğitim-öğretim yılında
Mehmet Akif Ersoy Üniversitesi ve Pamukkale Üniversitesi Eğitim Fakültesi Okul
Öncesi Eğitimi Anabilim Dalı son sınıfında öğrenim gören 210 öğrenci
oluşturmaktadır. Araştırmada veri toplama aracı olarak Şehriban (2013)
tarafından geliştirilen, geçerlik ve güvenirlik çalışması yapılmış ve
güvenirlik katsayısı α= 0.90 olarak bulunmuş likert tipi anket kullanılmıştır. Araştırmanın
amacı doğrultusunda toplanan veriler SPSS programı kullanılarak analiz edilmiş,
frekans ve yüzde değerler ile madde aritmetik ortalamaları kullanılarak
yorumlanmıştır.
ARQUEOLOGIA FUNERÁRIA NO CEMITÉRIO DE SANTO AMARO, RECIFE, PE: Jazigos e Signos da Elite Recifense na Segunda Metade do Século XIX
Authors: Machado Filipe Diêgo Cintra , Castro Viviane Maria Cavalcanti de
Published: March 2018

Este trabalho apresenta o estudo dos jazigos do cemitério de Santo Amaro, localizado no Recife, Pernambuco. O objetivo desse estudo foi identificar e compreender que grupos socioeconômicos estão representados no cemitério entre 1851 a 1900. Os dados materiais analisados demonstram haver distinção social no interior do cemitério e essa pode ser perceptível através do tipo de jazigo, matéria-prima, dos signos utilizados para a decoração tumular e da própria localização do sepultamento. Conclui-se que o processo de mudança dos sepultamentos das igrejas para o cemitério extramuros, ocorrido no século XIX, perpetuou e ampliou as questões de caráter social, econômico e cultural. FUNERARY ARCHEOLOGY IN THE CEMETERY OF SANTO AMARO, RECIFE, PE: Graves and Signs of the Elite Recifense in the Second Half of the 19th CenturyABSTRACTThis work presents the study of the burial sites of the Santo Amaro cemetery, located in Recife, Pernambuco. The objective of this study was to identify and understand the socioeconomic groups represented in the cemetery between 1851 and 1900. The material data analyzed show that there is a social distinction within the cemetery, and this can be perceived through the type of deposit, the raw material, the signs used for the tomb decoration and the location of the burial. It is concluded that the process of changing the burials of the churches to the cemetery outside the walls, in the nineteenth century, perpetuated and expanded social, economic and cultural.Keywords: Historical Archeology; Cemiterial Studies; Cemetery of Santo Amaro
A ARTE MÓVEL DO EXTREMO SUL CATARINENSE: Análise das Ocorrências Arqueológicas de Arte Pré-Histórica Josafaz I e Salto da Serrinha
Authors: Cezaro Hérom Silva de , Campos Juliano Bitencourt , Schmitz Pedro Ignácio
Published: March 2018

O presente artigo surgiu da dissertação de mestrado intitulada ‘A ARTE PRÉ-HISTÓRICA NO EXTREMO SUL CATARINENSE-SC: Um estudo de caso do Sítio de Arte Pré-histórica “Toca do Tatu” e das Ocorrências Malacara, Josafaz I e Salto da Serrinha’, o qual teve por objetivo registar, mapear e analisar as técnicas e tipologias de sítios e ocorrências de Arte Pré-histórica, registradas junto ao polígono de pesquisa do projeto Arqueologia Entre Rios: do Urussanga ao Mampituba (AERUM). No artigo buscamos dar visibilidade à análise de duas ocorrências de Arte Pré-histórica (Josafaz I e Salto da Serrinha), pois ambas apresentam como característica peculiar a possibilidade de seu deslocamento. THE MOBILE ART OF THE EXTREME SOUTH CATARINIAN: Analysis of the Archaeological Occurrences of Prehistoric Art Josafaz I and Salto da SerrinhaABSTRACTThe present article arose from the master's dissertation entitled ‘The Prehistoric Art of the Southern Catarinense – SC: A case study of the Prehistoric Art Site “Toca do Tatu” and of the occurrences Malacara, Josafaz I and Salto da Serrinha’, whose main objective was to record, map, and analyze the techniques and typologies of sites and occurrences of Prehistoric Art registered in the research polygon Arqueologia Entre Rios: do Urussanga ao Mampituba AERUM’. In our article we seek to give visibility to the analysis of two occurrences of Prehistoric Art (Josafaz I and Salto da Serrinha); both occurrences have a peculiar characteristic: the possibility of their displacement.Keywords: Mobile Art, Extreme South of Santa Catarina, Canyons.
Management of Osteochondritis Dissecans of the Femoral Condyle
Authors: Chan Charles , Richmond Connor , Shea Kevin G. , Frick Steven L.
Published: March 2018

* Osteochondritis dissecans of the femoral condyle remains poorly understood, with an unclear etiology.

* Lesions that separate have a poor prognosis, thus making treatment strategies that promote healing and prevent separation attractive.

* Magnetic resonance imaging is the preferred imaging modality and can predict instability well in adult patients, but with less specificity in skeletally immature patients.

* Classification that considers skeletally immature patients and adults differently and separates mobile from immobile lesions may be helpful in treatment decisions.

* A multicenter research effort is under way to address weaknesses in the current literature identified by a 2010 Clinical Practice Guideline from the American Academy of Orthopaedic Surgeons.

* A new arthroscopic classification system with treatment recommendations has been proposed and is being studied.
Combined effects of penetration and explosion on damage characteristics of a mass concrete target
Authors: Yang Guangdong , Wang Gaohui , Lu Wenbo , Yan Peng , Chen Ming
Published: March 2018

With the development of the precision guidance technology, the earth-penetrating weapon (EPW) is a huge threat to infrastructures. The objective of this research is to investigate the damage characteristics of mass concrete targets under the combined action of penetration and explosion. The validity of the penetration model is discussed by reproducing a previous experimental test reported in the literature. Meanwhile, a field test about the internal explosion in a concrete cube is conducted to verify the validity of the internal explosion model. Subsequently, damage characteristics of a mass concrete target from the upper part of a concrete gravity dam are discussed when subjected to the combined action of the penetration and explosion. In order to improve the structural performance of the mass concrete target to penetration and explosion loadings, high strength concrete material is selected as a preventive measure. Penetration processes and damage patterns of the mass target with normal and high strength concrete material are compared. Then, three internal explosion models are presented to investigate the influence of the initial penetration damage on the failure characteristics of the mass concrete target. The results show that the resistance of the mass target to the combined action of the penetration and explosion can be enhanced significantly by using the high strength concrete material. The initial penetration damage has a significant influence on the damage processes of the mass concrete target subjected to internal blast loading.
Conjunction of wavelet-entropy and SOM clustering for multi-GCM statistical downscaling
Authors: Baghanam Aida Hosseini , Nourani Vahid , Keynejad Mohammad-Ali , Taghipour Hassan , Alami Mohammad-Taghi
Published: March 2018

Important issues in statistical downscaling of general circulation models (GCMs) is to select dominant large-scale climate data (predictors). This study developed a predictor screening framework, which integrates wavelet-entropy (WE) and self-organizing map (SOM) to downscale station rainfall. WEs were computed as the representatives of predictors and fed into the SOM to cluster the predictors. SOM-based clustering of predictors according to WEs could lead to physically meaningful selection of the dominant predictors. Then, artificial neural network (ANN) as the statistical downscaling method was developed. To assess the advantages of different GCMs, multi-GCM ensemble approach was used by Can-ESM2, BNU-ESM, and INM-CM4 GCMs. Moreover, NCEP reanalysis data were used to calibrate downscaling model as well for comparison purposes. The calibration, validation, and projection of the proposed model were performed during January 1951 to December 1991, January 1992 to December 2005 and January 2017 to December 2100, respectively. The proposed data screening model could reduce the dimensionality of data and select appropriate predictors for generalizing future rainfall. Results showed better performance of ANN than multiple linear regression (MLR) model. The projection results yielded 29% and 21% decrease of rainfall at the study area for 2017–2050 under RCPs 4.5 and 8.5, respectively.
Comparison of the degradation of molecular and ionic ibuprofen in a UV/H2O2 system
Authors: Su Rongkui , Chai Liyuan , Tang Chongjian , Li Bo , Yang Zhihui
Published: March 2018

The advanced oxidation technologies based on •OH can effectively degrade the pharmaceutical and personal care products under operating conditions of normal temperature and pressure. In this study, direct photolysis of ibuprofen (IBU) is slow due to the relatively low molar extinction coefficient and quantum yield. Compared to direct photolysis, the degradation kinetics of IBU was significantly enhanced in the UV/H2O2 system, mainly by •OH radical mediated oxidation. In the UV/H2O2 system, the degradation rate of ionic IBU was slightly faster than that of the molecular form. Kinetic analysis showed that the second-order reaction rate constant of ionic IBU (5.51 × 109 M−1 s−1) was higher than that of the molecular form (3.43 × 109 M−1 s−1). The pseudo first-order rate constant for IBU degradation (kobs) increased with increasing H2O2 dosage. kobs can be significantly decreased in the presence of natural organic matter (NOM), which is due to (i) NOM radical scavenging effects (dominant role) and (ii) UV absorption. The degradation of IBU was inhibited by HCO3–, which was attributed to its scavenging effect. Interestingly, when NO3– was present in aqueous solution, a slight increase in the degradation rate was observed, which was due to NO3– absorbing photons to generate •OH at a low quantum yield. No obvious effects were observed when SO42 and Cl− were present.
Optimal Placement of FACTS Devices for Voltage Stability Improvement with Economic Consideration Using Firefly Algorithm
Authors: Rajasekaran S. , Muralidharan S.
Published: March 2018

Background:

Increasing power demand forces the power systems to operate at their
maximum operating conditions. This leads the power system into voltage instability and causes
voltage collapse. To avoid this problem, FACTS devices have been used in power systems to increase
system stability with much reduced economical ratings. To achieve this, the FACTS devices
must be placed in exact location. This paper presents Firefly Algorithm (FA) based optimization
method to locate these devices of exact rating and least cost in the transmission system.

Methods:

Thyristor Controlled Series Capacitor (TCSC) and Static Var Compensator (SVC) are
the FACTS devices used in the proposed methodology to enhance the voltage stability of power
systems. Considering two objectives of enhancing the voltage stability of the transmission system
and minimizing the cost of the FACTS devices, the optimal ratings and cost were identified for the
devices under consideration using Firefly algorithm as an optimization tool. Also, a model study
had been done with four different cases such as normal case, line outage case, generator outage
case and overloading case (140%) for IEEE 14,30,57 and 118 bus systems.

Results:

The optimal locations to install SVC and TCSC in IEEE 14, 30, 57 and 118 bus systems
were evaluated with minimal L-indices and cost using the proposed Firefly algorithm. From the
results, it could be inferred that the cost of installing TCSC in IEEE bus system is slightly higher
than SVC.For showing the superiority of Firefly algorithm, the results were compared with the
already published research finding where this problem was solved using Genetic algorithm and
Particle Swarm Optimization. It was revealed that the proposed firefly algorithm gives better optimum
solution in minimizing the L-index values for IEEE 30 Bus system.

Conclusion:

The optimal placement, rating and cost of installation of TCSC and SVC in standard
IEEE bus systems which enhanced the voltage stability were evaluated in this work. The need of
the FACTS devices was also tested during the abnormal cases such as line outage case, generator
outage case and overloading case (140%) with the proposed Firefly algorithm. Outputs reveal that
the recognized placement of SVC and TCSC reduces the probability of voltage collapse and cost
of the devices in the transmission lines. The capability of Firefly algorithm was also ensured by
comparing its results with the results of other algorithms.
Magnetooptical studies and stimulated emission in narrow gap HgTe/CdHgTe structures in the very long wavelength infrared range
Authors: Rumyantsev V.V. , Bovkun L.S. , Kadykov A.M. , Fadeev M.A. , Dubinov A.A. , Aleshkin V.Ya. , Mikhailov N.N. , Dvoretsky S.A. , Piot B. , Orlita M. , Potemski M. , Teppe F. , Morozov S.V. , Gavrilenko V.I.
Published: March 2018

AbstractWe investigate the prospects of HgTe/HgCdTe quantum wells for long-wavelength interband lasers (λ = 15–30 μm). The properties of stimulated emission (SE) and magnetoabsorbtion data of QWs structures with wide-gap HgCdTe dielectric waveguide provide an insight on dominating non-radiative carrier recombination mechanism. It is shown that the carrier heating under intense optical pumping is the main factor limiting the SE wavelength and intensity, since the Auger recombination is greatly enhanced when carriers populate high energy states in the valence band.
Optical properties of AlGaAs/GaAs resonant Bragg structure at the second quantum state
Authors: Chaldyshev V.V. , Kundelev E.V. , Poddubny A.N. , Vasil'ev A.P. , Yagovkina M.A. , Chen Y. , Maharjan N. , Liu Z. , Nakarmi M.L. , Shakya N.M.
Published: March 2018

AbstractPhotoluminescence, optical reflectance and electro-reflectance spectroscopies were employed to study an AlGaAs/GaAs multiple-quantum-well based resonant Bragg structure, which was designed to match optical Bragg resonance with the exciton-polariton resonance at the second quantum state in the GaAs quantum wells. The structure with 60 periods of AlGaAs/GaAs quantum wells was grown on a semi-insulating substrate by molecular beam epitaxy. Broad and enhanced optical and electro-reflectance features were observed when the Bragg resonance was tuned to the second quantum state of the GaAs quantum well excitons manifesting an enhancement of the light-matter interaction under double-resonance conditions. By applying an alternating electric field, we revealed electro-reflectance features related to the x(e2-hh2) and x(e2-hh1) excitons. The excitonic transition x(e2-hh1), which is prohibited at zero electric field, was allowed by a DC bias due to brake of symmetry and increased overlap of the electron and hole wave functions caused by electric field.
Core-shell III-nitride nanowire heterostructure: negative differential resistance and device application potential
Authors: Mozharov A.M. , Vasiliev A.A. , Bolshakov A.D. , Sapunov G.A. , Fedorov V.V. , Cirlin G.E. , Mukhin I.S.
Published: March 2018

AbstractIn this work we have studied volt-ampere characteristics of single core-shell GaN/InGaN/GaN nanowire. It was experimentally shown that negative differential resistance effect can be obtained in the studied heterostructure. On the base of numerical calculation results the model describing negative differential resistance phenomenon was proposed. We assume this effect to be related with strong localization of current flow inside the nanowire and emergence of Gunn effect in this area.
Wigner localization and whispering gallery modes of electrons in quantum dots
Authors: Mintairov A.M. , Merz J.L. , Kapaldo J. , Vlasov A.S. , Blundell S.A.
Published: March 2018

AbstractWe used a low temperature near-field scanning optical microscopy (NSOM) to study a formation of Wigner molecules (WMs) in the emission spectra of self-organized InP/GaInP QDs having up to seven electrons. We used a Schottky diode structure for the electrostatic control of the number of the electrons ( N ) in QD, and we observed the emission of the charged excitons (for N < 3) and of the WMs (for N > 2) in the regime of weak Wigner localization. We show, that a contribution of whispering gallery modes (WGMs) of the electrons and rearrangement of the electrons between the WM and WGM states in the QDs, can explain the anomalous dependence of NSOM image size on the quantum confinement observed for some dots.
Self-consistent simulation of GaAs/InGaAs/AlGaAs heterostructures photoluminescence spectra and its application to pHEMT structures diagnostics
Authors: Mironova M.S. , Zubkov V.I. , Dudin A.L. , Glinskii G.F.
Published: March 2018

AbstractWe performed numerical self-consistent solution of Schrödinger and Poisson equations for GaAs/InGaAs/AlGaAs pHEMT structures with quantum well. Based on the results we calculated optical transition matrix elements and photoluminescence spectra of such structures with the same design and different parameters (such as doping level and epitaxial layers width). In the photoluminescence spectra calculations three fitting parameters have been used. These parameters are GaAs/InGaAs valence band offset in strained quantum well, hole quasi Fermi level and inhomogeneous broadening. The PL peaks amplitudes and positions dependencies on the structure parameters were established. These dependencies can be used as the basis for pHEMT structure non-destructive diagnostics.
Red single-photon emission from InAs/AlGaAs quantum dots
Authors: Rakhlin M.V. , Belyaev K.G. , Klimko G.V. , Mukhin I.S. , Ivanov S.V. , Toropov A.A.
Published: March 2018

AbstractWe report on single-photon emission of InAs/AlGaAs self-assembled quantum dots (QDs) grown by molecular beam epitaxy. By varying the growth conditions the QDs luminescence could be tuned over a wide wavelength range from 0.64 to 1 μm, including red part of the visible spectrum. Emission properties of individual QDs are investigated by micro-photoluminescence (μ-PL) spectroscopy using 500-nm-size etched mesa structures. Autocorrelation functions of photons from single QDs, measured in the wide spectral range demonstrate antibunching effect at zero delay time with a value of g ^(2)(0) ~ 0.17 that is a clear evidence of non-classical light.
Однофотонное излучение квантовых точек InAs/AlGaAs
Authors: Рахлин М.В. , Беляев К.Г. , Климко Г.В. , Мухин И.С. , Иванов С.В. , Торопов А.А.
Published: March 2018

AbstractThe results of investigation of the radiative characteristics of heterostructures with InAs/AlGaAs quantum dots (QDs) grown by molecular beam epitaxy have been presented. The properties of single QDs were determined by spectroscopy of micro-photoluminescence in cylindrical mesa-structures with a diameter of 200–1000 nm or columnar microresonators with distributed Bragg mirrors. The single-photon nature of the radiation is confirmed by measurements and analysis of the second-order correlation function g ^2(τ) in a wide spectral range from 630 to 730 nm.
Особенности поведения доменной структуры кристаллов BaTiO-=SUB=-3-=/SUB=- в процессе термического нагрева и охлаждения-=SUP=-*-=/SUP=-
Authors: Киселев Д.А. , Ильина Т.С. , Малинкович М.Д. , Сергеева О.Н. , Большакова Н.Н. , Семенова Е.М. , Кузнецова Ю.В.
Published: March 2018

AbstractThis paper presents the results of the study of the domain structure of barium titanate crystals in a wide temperature range including the Curie point ( T _C) using the polarization-optical method in the reflected light and the force microscopy of the piezoelectric response. It is shown that a new a–c domain structure forms during cyclic heating of the crystal above T _C and subsequent cooling to the ferroelectric phase. The role of uncompensated charges appeared on the crystal surface during the phase transition and their influence on the formation of the domain structure during cooling are discussed.
Зависимость от давления коэффициентов упругости алюминий-магниевого сплава AMg6 и нанокомпозитного сплава n-Mg6/C-=SUB=-60-=/SUB=-
Authors: Прохоров В.М. , Громницкая Е.Л.
Published: March 2018

AbstractThe ultrasonic study results for dependence of the elastic wave velocities and second-order elasticity coefficients of the polycrystalline aluminum alloy AMg6 and its nanocomposite n -AMg6/C_60 on hydrostatic pressure up to 1.6 GPa have been described. The ultrasonic research has been carried out using a highpressure ultrasonic piezometer based on the piston-cylinder device. The pressure derivatives of the secondorder elastic constants of these materials established in the present study have been compared with the results of the third-order elastic constants measurements of the test alloys using the Thurston–Brugger method. Involving available literature data, we determined the relationships between the pressure derivatives of the second-order elastic constants of the AMg6 alloy and the Mg-content and nanostructuring.
Спектры пропускания квантовых ям и пленок на основе HgTe в дальнем ИК-диапазоне
Authors: Савченко М.Л. , Васильев Н.Н. , Ярошевич А.С. , Козлов Д.А. , Квон З.Д. , Михайлов Н.Н. , Дворецкий С.А.
Published: March 2018

AbstractStrained 80-nm-thick HgTe films belong to a new class of materials referred to as three-dimensional topological insulators (i.e., they have a bulk band gap and spin-nondegenerate surface states). Though there are a number of studies devoted to analysis of the properties of surface states using both transport and magnetooptical techniques in the THz range, the information about direct optical transitions between bulk and surface bands in these systems has not been reported. This study is devoted to the analysis of transmission and reflection spectra of HgTe films of different thicknesses in the far-infrared range recorded in a wide temperature range in order to detect the above interband transitions. A peculiarity at 15 meV, which is sensitive to a change in the temperature, is observed in spectra of both types. Detailed analysis of the data obtained revealed that this feature is related to absorption by HgTe optical phonons, while the interband optical transitions are suppressed.
Взаимная синхронизация наногенераторов, связанных с помощью спиновых волн
Authors: Алешин К.Н. , Матросов В.В. , Мишагин К.Г.
Published: March 2018

AbstractThe dynamic behavior of a system of two spin-wave-coupled nanooscillators with various values of coupling strength and frequency mismatch has been analyzed. The parameter space of the system has been divided into the regions of existence of synchronous and quasi-synchronous regimes, beats, and the regime of oscillation suppression. The regions of multistable behavior have been identified. The behavior at the boundaries of capture and retention regions has been studied. Dependences of the width of capture and retention bands on the strength of nanooscillator coupling have been obtained.
Высокодобротные магнитоэлектрические структуры никель-кварц-никель
Authors: Лалетин В.М. , Филиппов Д.А. , Мозжаров С.Е. , Маничева И.Н.
Published: March 2018

AbstractThe results of experimental examination of the magnetoelectric parameters of three-layer nickel–quartz–nickel structures in the region of electromechanical resonance are presented. The structures have been fabricated by electrolytic deposition of nickel onto a quartz substrate. It has been found that their Q-factor in the region of electromechanical resonance is Q = 10000, which is considerably higher than the Q-factors of magnetoelectric structures fabricated earlier. The experimental data agree well with the earlier-presented theory.
Увеличение эффективности органических солнечных элементов с помощью просветляющих покрытий на основе фторидных композиций
Authors: Сулейманов С.Х. , Berger P. , Дыскин В.Г. , Джанклич М.У. , Кулагина Н.А. , Kim M.
Published: March 2018

AbstractResults are presented obtained in measurements of current–voltage characteristics of organic solar cells with and without antiref lection coatings produced by melting in a solar furnace of 95 : 5 and 55 : 45 wt % MgF_2 and CaF_2 fluoride mixtures. The relative increase in the efficiency of the organic solar cells was 3.2% in the first case and 3.3% in the second.
Новые кластерные вторичные ионы для количественного анализа концентрации атомов бора в алмазе методом времяпролетной вторично-ионной масс-спектрометрии
Authors: Дроздов М.Н. , Дроздов Ю.Н. , Лобаев М.А. , Юнин П.А.
Published: March 2018

AbstractA new approach to quantitative analysis of the concentration of boron atoms in diamond using secondary- ion mass spectrometers with time-of-flight mass analyzers is proposed. Along with the known boron-containing lines (B, BC, BC_2), many lines related to cluster secondary ions BC_ N have been found in the mass spectrum; their intensity increases by one or two orders of magnitude when Bi_3 probe ions are used. Lines BC_4, BC_6, BC_2, and BC_8 have the highest intensity (in the descending order); when they are summed, the sensitivity increases by an order of magnitude in comparison with the known mode of detecting BC_2. The parameters of the boron δ-layer in single-crystal diamond films grown under optimal conditions have been measured to be unprecedented: the δ-layer width is about 2 nm, and the concentration is 6.4 × 10^20 cm^–3 (the boron concentrations for doped and undoped diamonds differ by four orders of magnitude).
Природа эффекта рассогласования частот прецессии ядер -=SUP=-129-=/SUP=-Xe и -=SUP=-131-=/SUP=-Xe при спин-обменной накачке атомами щелочного металла
Authors: Вершовский А.К. , Пазгалёв А.С. , Петров В.И.
Published: March 2018

AbstractThe effect of precession-frequency mismatch between ^129Xe and ^131Xe xenon-isotope nuclei, which arises under spin-exchange pumping by optically oriented alkali-metal (Cs) atoms and affects the characteristics of measuring and navigation devices based on balanced Schemes with spin-exchange pumping of xenon isotopes, has been investigated. An attempt to explain this effect has been made, and methods for its minimization and elimination have been proposed and experimentally verified.
Метод расчета нестационарного теплового потока по сигналу датчика на основе анизотропных термоэлементов из монокристалла висмута
Authors: Попов П.А. , Бобашев С.В. , Резников Б.И. , Сахаров В.А.
Published: March 2018

AbstractWe propose a method for calculating nonstationary heat fluxes using the electric-response signal of a sensor based on anisotropic bismuth single-crystal thermoelements. Using this method, it is possible to approximately calculate the heat flux during a period of time from ∼1 μs to the attainment of a stationary thermal regime. Tests showed that the monitoring of short-term ( t ∼ 1–10 ms) heat fluxes by bismuth-crystal-based sensors with a crystal length to thickness ratio of above 25 ensures a calculation error not exceeding several percent.
Фотовольтаические характеристики светодиодов на основе AlGaAs
Authors: Соколовский А.А.
Published: March 2018

AbstractPhotovoltaic characteristics of more than 20 types of AlGaAs-based light-emitting diodes operating in the 830- to 970-nm wavelength range have been considered. It is established that Al_ x Ga_1 – x As semiconductor structures employed in these devices can also be used for manufacturing photovoltaic converters of monochromatic radiation with quite high efficiency.
Создание пористых слоев германия имплантацией ионами серебра
Authors: Степанов А.Л. , Воробьев В.В. , Нуждин В.И. , Валеев В.Ф. , Осин Ю.Н.
Published: March 2018

AbstractWe propose a method for the formation of porous germanium ( P -Ge) layers containing silver nanoparticles by means of high-dose implantation of low-energy Ag^+ ions into single-crystalline germanium ( c -Ge). This is demonstrated by implantation of 30-keV Ag^+ ions into a polished c -Ge plate to a dose of 1.5 × 10^17 ion/cm^2 at an ion beam-current density of 5 μA/cm^2. Examination by high-resolution scanning electron microscopy (SEM), atomic-force microscopy (AFM), X-ray diffraction (XRD), energy-dispersive X-ray (EDX) microanalysis, and reflection high-energy electron diffraction (RHEED) showed that the implantation of silver ions into c -Ge surface led to the formation of a P -Ge layer with spongy structure comprising a network of interwoven nanofibers with an average diameter of ∼10–20 nm Ag nanoparticles on the ends of fibers. It is also established that the formation of pores during Ag^+ ion implantation is accompanied by effective sputtering of the Ge surface.
Da manchete ao post: a formação de múltiplas agendas nas redes sociais
Authors: Vieira Adriana Barsotti
Published: March 2018

O crescimento das mídias sociais como meio de acesso às notícias traz cada vez mais desafios ao jornalismo em rede. É por links compartilhados nas redes sociais que mais da metade da população mundial com acesso à internet se informa, reduzindo o alcance das manchetes tradicionalmente selecionadas pelos jornalistas. Nas mídias sociais, algoritmos regulam os regimes de visibilidade da notícia, pulverizando a agenda noticiosa. O presente artigo, por meio de entrevistas em profundidade e da análise de conteúdo de posts e chamadas de primeira página dos três principais jornais de referência do país – Folha de S.Paulo, O Globo e O Estado de S.Paulo – discute até que ponto os jornalistas também não estariam contribuindo para a formação de múltiplas agendas no Facebook.
Market concentration, foreign ownership and determinants of bank financial performance: Evidence from MENA countries
Authors: Elfeituri Hatem
Published: March 2018

The purpose of this paper is to investigate the market concentration, foreign ownership and profitability for commercial banks operating in the MENA economies over the period 1999-2012. This paper uses panel analysis via GMM estimation to examine a large sample of banks for a period that includes the recent global crisis and Arab uprising, marked by political changes and by liberalisation and market transformation. Findings indicate that the SCP hypothesis is not rejected, highlighting that increased market power yields monopoly profits. The fact that the impact of market concentration is positive in MENA economies is vital evidence, at least to a certain extent that bank performance is explained by market concentration. Findings also confirm that there is a positive and significant relationship between profitability and capital adequacy, confirming that regulators and policy makers should ensure banks are well capitalised to guarantee survival and stability for MENA banks. Cost efficiency and bank size have decreased the profitability of banks, and banks with foreign ownership are more profitable and perform better than state banks. Overall, the paper finds evidence of structural reforms and uncovers measures that have led to the improvement of regulation, and the implementation of frameworks which should continue to improve competitiveness within MENA banking sectors. In addition, future policy on the banking sector should take account of intervention to change the market structure and to stimulate competition.
Corporate governance mechanisms in family firms – A socioemotional wealth perspective
Authors: Ulrich Patrick , Fibitz Alexandra
Published: March 2018

This paper examines how German family firms differ in the usage of corporate governance mechanisms in comparison to non-family firms. We give an overview about the relation of corporate governance and family firms, and deliver hypotheses from an empirical study. The study was conducted in 2017 as a written survey and 86 questionnaires could be used for statistical analysis. Based on socioemotional wealth (SEW) theory, we find that with a higher extent of family influence in the firm, less corporate governance instruments are used. Furthermore, corporate governance is used primarily to prevent stakeholder confidence in the long-run. However, a formalization of corporate governance mechanisms does not take place. We draw implications for more corporate governance formalization and awareness in family firms both for theory and practice.
Facial nerve paralysis as first sign of metastatic breast cancer to the temporal bone
Authors: Folic Miljan , Djeric Dragoslava
Published: March 2018

Introduction. Facial nerve paralysis originates from various factors, although in most cases etiology is idiopathic. Temporal bone metastases are quite rare, but should still be suspected in cases when congenital disorders, inflammatory disease, infection or trauma are excluded as cause of facial palsy. We present an unusual case of facial nerve paralysis as the initial sign of temporal bone metastasis of breast carcinoma and discuss diagnostic pitfalls. Case outline. A 70-year-old patient presented with facial nerve palsy, severe otalgia, hearing loss and vertigo. Patient underwent steroid treatment 6 months earlier due to peripheral facial palsy with complete neurological resolution. CT scan revealed osteolytic lesion of the right temporal bone with extension into the parietal bone and soft-tissue. Additional examination confirmed ductal breast carcinoma and osteolysis of the ribs and vertebrae. After four months, the patient with metastatic breast carcinoma to the temporal bone died despite chemotherapy. Conclusion. Temporal bone metastasis of breast cancer is very rare condition with poor prognosis. Late diagnosis and inadequate management of breast cancer are factors that contribute to the temporal bone metastasis formation. Temporal bone metastasis should be excluded in elderly patients, both with and without any history of malignancy, especially in cases of peripheral facial palsy refractory to treatment.
Pericyte-Derived Dickkopf2 Regenerates Damaged Penile Neurovasculature Through an Angiopoietin-1-Tie2 Pathway
Authors: Yin Guo Nan , Jin Hai-Rong , Choi Min-Ji , Limanjaya Anita , Ghatak Kalyan , Minh Nguyen Nhat , Ock Jiyeon , Kwon Mi-Hye , Song Kang-Moon , Park Heon Joo , Kim Ho Min , Kwon Young-Guen , Ryu Ji-Kan , Suh Jun-Kyu
Published: March 2018

Penile erection requires well-coordinated interactions between vascular and nervous systems. Penile neurovascular dysfunction is a major cause of erectile dysfunction (ED) in patients with diabetes, which causes poor response to oral phosphodiesterase-5 inhibitors. Dickkopf2 (DKK2), a Wnt antagonist, is known to promote angiogenesis. Here, using DKK2-Tg mice or DKK2 protein administration, we demonstrate that the overexpression of DKK2 in diabetic mice enhances penile angiogenesis and neural regeneration and restores erectile function. Transcriptome analysis revealed that angiopoietin-1 and angiopoietin-2 are target genes for DKK2. Using an endothelial cell-pericyte coculture system and ex vivo neurite sprouting assay, we found that DKK2-mediated juxtacrine signaling in pericyte-endothelial cell interactions promotes angiogenesis and neural regeneration through an angiopoietin-1-Tie2 pathway, rescuing erectile function in diabetic mice. The dual angiogenic and neurotrophic effects of DKK2, especially as a therapeutic protein, will open new avenues to treating diabetic ED.
New Understanding of β-Cell Heterogeneity and In Situ Islet Function
Authors: Benninger Richard K.P. , Hodson David J.
Published: March 2018

Insulin-secreting β-cells are heterogeneous in their regulation of hormone release. While long known, recent technological advances and new markers have allowed the identification of novel subpopulations, improving our understanding of the molecular basis for heterogeneity. This includes specific subpopulations with distinct functional characteristics, developmental programs, abilities to proliferate in response to metabolic or developmental cues, and resistance to immune-mediated damage. Importantly, these subpopulations change in disease or aging, including in human disease. Although discovering new β-cell subpopulations has substantially advanced our understanding of islet biology, a point of caution is that these characteristics have often necessarily been identified in single β-cells dissociated from the islet. β-Cells in the islet show extensive communication with each other via gap junctions and with other cell types via diffusible chemical messengers. As such, how these different subpopulations contribute to in situ islet function, including during plasticity, is not well understood. We will discuss recent findings revealing functional β-cell subpopulations in the intact islet, the underlying basis for these identified subpopulations, and how these subpopulations may influence in situ islet function. Furthermore, we will discuss the outlook for emerging technologies to gain further insight into the role of subpopulations in in situ islet function.
Type 1 Diabetes TrialNet: A Multifaceted Approach to Bringing Disease-Modifying Therapy to Clinical Use in Type 1 Diabetes
Authors: Bingley Polly J. , Wherrett Diane K. , Shultz Ann , Rafkin Lisa E. , Atkinson Mark A. , Greenbaum Carla J.
Published: March 2018

What will it take to bring disease-modifying therapy to clinical use in type 1 diabetes? Coordinated efforts of investigators involved in discovery, translational, and clinical research operating in partnership with funders and industry and in sync with regulatory agencies are needed. This Perspective describes one such effort, Type 1 Diabetes TrialNet, a National Institutes of Health–funded and JDRF-supported international clinical trials network that emerged from the Diabetes Prevention Trial–Type 1 (DPT-1). Through longitudinal natural history studies, as well as trials before and after clinical onset of disease combined with mechanistic and ancillary investigations to enhance scientific understanding and translation to clinical use, TrialNet is working to bring disease-modifying therapies to individuals with type 1 diabetes. Moreover, TrialNet uses its expertise and experience in clinical studies to increase efficiencies in the conduct of trials and to reduce the burden of participation on individuals and families. Herein, we highlight key contributions made by TrialNet toward a revised understanding of the natural history of disease and approaches to alter disease course and outline the consortium’s plans for the future.
Considerações apensas sobre a Theotokos a partir do Cristianismo Ortodoxo
Authors: Duarte Alexandre Freire
Published: March 2018

A vivência cristã ortodoxa de Maria é de uma copiosidade transbordante. Apesar de ser, em parte, análoga à do Cristianismo Católico, a sua especifidade pode trazer para este um leque de elementos que o podem enriquecer. Agregando, num percurso expositivo coerente (todo ele decorrente da centralidade da consideração axial de Maria como Theotokos) um conjunto destes fatores foi trazido para este breve ensaio, também pensado para celebrar um ano cheio de ressonâncias marianas.
The personology of love-agape in Horuzhy’s synergetic anthropology
Authors: Pavenkov Oleg , Shmelev Ilya , Rubtcova Mariia
Published: March 2018

O artigo centra-se na análise da personologia do amor na antropologia sinergética de Horuzhy. O pensamento de Horuzhy como visão dos representantes da filosofia moderna do século XXI na Rússia, estava sob a influência poderosa da tradição filosófica religiosa russa e da prática do Hesychasm. Horuzhy desenvolveu uma abordagem sinergética-personológica para a consideração sobre o amor. O amor, que completou e moveu a vida e o ministério dos anciãos é o amor de Cristo, que é Amor. O amor humano por transformação sinergética pode entrar completamente no Amor de Cristo através da prática do Hesiaquismo. Horuzhy concentrou-se em aspectos espirituais-práticos e ascéticos do amor unido. Chegamos à conclusão de que, na filosofia de Horuzhy, o amor-ágape, existente dentro da personalidade humana, está centrado em Cristo. A missão do amor-ápice é teúrgica e cósmica. Esta missão do amor é “reunir a obra da criação: viver e agir no mundo, o ser humano tem que reunir e transformar o mundo em um todo vital e harmonioso. Assim, o amor-ágape é a idéia central da antropologia sinergética e de toda a "loso"a russa.
O princípio pluralista: bases teóricas, conceituais e possibilidades de aplicação
Authors: Ribeiro Claudio De Oliveira
Published: March 2018

O texto apresenta resultados de pesquisa realizada a partir de esforços de avaliação sobre a teologia latino-americana no tocante aos desaos suscitados pelo pluralismo. Trata-se de uma análise crítica de sua metodologia, tendo em vista contribuir com o seu aprimoramento e com a indicação de respostas mais adequadas e mais consistentes ao quadro crescente de complexidade da realidade social e de pluralismo, sobretudo religioso. Este cenário é emoldurado pelos fatores econômicos e marcado por uma emergência de subjetividades, além de ser também moldado por um quadro de pluralismo em diferentes aspectos cada vez mais intenso nas sociedades e culturas. Para este esforço crítico foi conceituado o princípio pluralista. Metodologicamente, foram dados os seguintes passos: (i) síntese de perspectivas teológicas no campo da teologia ecumênica das religiões, (ii) análise de fontes que realçam aspectos da complexidade cultural, da subjetividade humana, da pluralidade, da alteridade e da ecumenicidade, e (iii) análise da importância pública das religiões e da força dos movimentos contra hegemônicos, a partir do princípio pluralista.
تقويم أنشطة التواصل الشفوي/السمعي في سلسلة كتب العربية الاتصالية من وجهة نظر المعلمين
Authors: Febrian Rojja
Published: March 2018

هدف هذا البحث إلى تقويم أنشطة التواصل الشفوي/السمعي في سلسلة كتب العربية الاتصالية المقررة على السنة السابعة والثامنة الثانوية ببروناي دار السلام، وذلك للتعرف على آراء المعلمين حول أنواع الأنشطة ومستوى الأنشطة ومدى فعالية الأنشطة فيها. واتبع الباحث منهجا وصفيا قائما على البحث الكمي حيث اختار استبانة أداة الدراسة. وتمثّل موضوع البحث (عينة الدراسة) من سلسلة العربية الاتصالية التي تتكون من أربعة كتب؛ كتابي التلميذ للصف السابع والثامن وكتابي التدريبات للصف السابع والثامن، ووُزعت الاستبانة إلى جميع مجتمع الدراسة (57 معلما). وتم تحليل البيانات المحصولة من الاستبانة باستخدام الإحصاء الوصفي SPSS المتمثل في التكرارات، والنسبة المئوية، المتوسطات الحسابية والانحرافات المعيارية. وخلص الباحث من نتائج البيانات إلى أن الكتب الأربعة تخلو من الأنشطة التي تعزز مستوى عال من الطلاقة الشفوية-السمعية، كما رأى المعلمون جوانب نقص عدة في الكتب المدروسة وضرورة إعادة النطر فيها
تأثير استخدام وسيلة القصّة المتقاطعة لترقية مهارة القراءة
Authors: Zein Husnaini
Published: March 2018

إن القراءة عملية ميكانيكية بسيطة إلى مفهوم معقد يقوم على أنهّا نشاط عقلي يستلزم تدخل شخصية الإنسان بكلّ جوانبها وهي تتضمن العديد من المهارات المترابطة والمتشابكة التي لا يمكن فصل بعضها عن بعض. واستخدام وسيلة القصّة المتقاطعة بعض من الأساليب المعصرة في تعليمها. وهي أن يجر التعليم حيّا مرغوبا في زهن الطلاب.  وقد اتخذا الكاتب  مدرسة محمدية كنموذج التعليم لمعرفة الحقيقة أن هذه الطريقة والتقنية تؤثر في ترقية مهارة القراءة تأثيرا معنويا. وأخذ يبحث عن هذه العملية المهمّة. وكان البحث على نوع الدراسة التجريبية المقارنة. ووجد منها بيانات تشير إلى نتيجة أن فيه تأثير معنوي في ترقية مهارة القراءة بين الطلاب الذين تعلّموا باستخدام طريقة القراءة بوسيلة القصّة المتقاطعة والطلاب الذين تعلّموا باستخدام الطريقة التقليدية
استخدام طريقة الحفظ من خلال القصة المتقاطعة لترقية قدرة التلاميذ على كتابة الآيات في مادة القرآن والحديث
Authors: Nelvawita Nelvawita
Published: March 2018

كان هذا البحث مؤسسا على انخفاض قدرة التلاميذ على كتابة الآيات التي تم دراستها. وعادة ما تكون هذه الصعوبة بسبب عدم حفظها من الآيات. وإذا تم حفظ التلاميذ الآيات وفقا لمخرجها فصاروا أسهل لكتابتها. لذلك أرادت الباحثة تطبيق هذه الطريقة لجعلها مسهلة  في حفظ آيات القرآن وكتابتها. وفي هذا البحث، فإن صياغة المشكلة هي "كيفية استخدام طريقة حفظ القرآن من خلال القصة المتقاطعة في دراسة القرآن والحديث بالمدرسة الثانوية الإسلامية الحكومية الأولى بكنبارو؟" ويهدف هذا البحث إلى التعرف على استخدام طريقة حفظ القرآن من خلال القصة المتقاطعة في دراسة القرآن الكريم والحديث الشريف. والنوع من البحوث هو بحث ميداني (field research)، البحث النوعي الذي هو وصفي. وكان الفرد من هذا البحث هو المدرس في مادة القرآن والحديث، والتلاميذ، ورئيس المدرسة. وأساليب جمع البيانات المستخدمة هي الملاحظة، والمقابلة، والتوثيق. وأظهرت نتيجة البحث أن استخدام طريقة حفظ القرآن الكريم من خلال القصة المتقاطعة الإعلامية في دراسة القرآن والحديث في الصف الحادي عشر "الباء" و "الجيم" هو وفقا لخطوات استخدام القصة المقاطعة الإعلامية، وتظهر النتيجة أن الطفل يحفظ بسرعة أكبر ويهتم بحفظ القرآن والحديث