bluuebunny/crossref_metadata_2025_split huggingface dataset:
Residential segregation and clustering dynamics of migrants in the metropolitan area of Barcelona
Authors: Galeano Juan , Bayona-i-Carrasco Jordi 
Published: May 2019

Abstract
During the first decade of the 21st century, the Metropolitan Region of Barcelona underwent an enormous demographic transformation following the arrival of more than 300’000 foreign immigrants. The residential patterns resulting from the settlement of the newcomers drastically changed the composition of the human landscape at all territorial levels, both national and local, confronting policy makers and migration managers with the tremendous challenge of managing the increasing population diversity. Within this context, two linked phenomena are perceived as particularly relevant for social cohesion: (i) the degree of residential segregation between different population groups and (ii) the spatial concentration of the newcomers. To assess the degree and trend of spatial assimilation of different immigrant groups and the process of formation of areas of concentration and their evolution over time, we combine the analysis of residential segregation at the metropolitan level with the application of the local indicator of spatial association (Moran’s I), which allows us to locate areas of residential clustering at the census tract level. Our results show the coexistence of a general trend towards the spatial assimilation of foreign-born populations at the regional level (except for Western Europeans), along with the consolidation, and even extension, of ethnic concentrations at the local level.
Résumé
Au cours de la première décennie du 21ème siècle, la région métropolitaine de Barcelone a subi une énorme transformation démographique suite à l’arrivée de plus de 300 000 immigrants étrangers. Les schémas résidentiels résultant de l’ins­tallation des nouveaux arrivants ont considérablement modifié la composition du paysage humain à tous les niveaux territoriaux, nationaux et locaux, confrontant les décideurs et les gestionnaires des migrations à l’énorme défi de gérer la diversité démographique croissante. Dans ce contexte, deux phénomènes liés sont perçus comme particulièrement pertinents pour la cohésion sociale : (i) le degré de ségrégation résidentielle entre différents groupes de population et (ii) la concentration spatiale des nouveaux arrivants. Pour évaluer le degré et les tendances de l’assimi­lation spatiale des différents groupes d’immigrants et le processus de formation des aires de concentration et leur évolution dans le temps, nous combinons l’analy­se de la ségrégation résidentielle au niveau métropolitain avec l’indicateur de Moran d’association spatiale au niveau local, ce qui nous permet de localiser les zones de regroupement résidentiel au niveau des secteurs de recensement. Nos résultats montrent une tendance générale vers l’assimilation spatiale des populations nées à l’étranger au niveau régional (sauf pour les Européens de l’Ouest), simultanément à la consolidation, voire l’extension, des concentrations ethniques au niveau local.
Candling and Field Atlas of Early Egg Development in Common Eiders Somateria Mollissima in the Central Baltic
Authors: Garbus Svend-Erik , Lyngs Peter , Thyme Anders Popp , Christensen Jens Peter , Sonne Christian 
Published: May 2019

Abstract
Here we present the results of candling 258 eggs from 50 nests of Common Eiders Somateria mollissima in a colony in the central Baltic. Of these, 223 (86%) had a developing foetus. Among the 35 (14%) failed eggs, 15 were unfertilized and 20 contained a dead embryo. The prevalence of failed eggs is similar to the average proportion of failed eggs reported previously by the Christiansø Scientific Field Station during 1998–2014. The reason for the high percentage of failed eggs is unknown; however, low pre-incubation body mass and energetic stress is likely to be the main factor. In addition, we incubated 8 eggs in the laboratory from day 0 to hatch in order to follow the development and foetal morphology. This resulted in a field atlas from which it is possible to estimate date of incubation start using candling in early incubation (days 1–12). The atlas is a new possibility for field biologists to estimate the first day of incubation of breeding eiders and the prevalence of unfertilized and rotten eggs, which is important for studying their biology and population dynamics.
Classification of Singularities at Infinity of Polynomials of Degree 4 in Two Variables
Authors: Siersma Dirk , Smeltink Job 
Published: May 2019

Abstract
For certain polynomial functions from to ℂ the behavior at infinity is studied. Compactified fibers of the function, which have, in general, singularities at infinity are considered. A classification of polynomials of degree 4 is given with respect to the behavior at infinity.
Qualitative Investigation of Two-Dimensional Chua's System
Authors: Yanchuk Sergiy 
Published: May 2019

Abstract
The piecewise linear canonical Chua's system of ordinary differential equations is investigated. We consider the case when this problem can be reduced to a two-dimensional system with three parameters. For the reduced system, the qualitative behavior of solutions is analyzed for all parameter values. In particular, we indicate the parameters for which at least one, two or three nontrivial cycles exist.
Existence of Mild Solutions of Semilinear Evolution Inclusions with Nonlocal Conditions
Authors: Benchohra M. , Ntouyas S. K. 
Published: May 2019

Abstract
The existence of mild solutions of first order semilinear evolution inclusions on a compact real interval is investigated in Banach spaces with nonlocal conditions. A fixed point theorem for condensing maps due to Martelli is used.
On the Dynamics of the Generalized Emden–Fowler Equation
Authors: Cecchi Mariella , Došlá Zuzana , Marini Mauro 
Published: May 2019

Abstract
We present some recent results dealing with the qualitative behavior of solutions of the quasilinear second order differential equation

where a, b are positive continuous real functions, and Φ
j
(u) = |u|
j–2
u, j > 1. Following a classification of solutions, proposed in the linear case in [Marini and Zezza, J. Diff. Equat. 28: 1–17, 1978], we divide all the solutions of (∗) with respect to their asymptotic behavior into two classes. The existence and uniqueness is considered: a topological approach is employed and a fixed point result for operators associated to boundary value problems on a half-line is used. In addition, some asymptotic estimates are presented and the convergence of solutions to zero as t → ∞ is studied.
Functions of Generalized Wiener Classes BV (p(n) ↑ ∞, ϕ) and their Fourier Coefficients
Authors: Akhobadze T. 
Published: May 2019

Abstract
Generalized Wiener classes are considered. For these classes the exact order of Fourier coefficients with respect to the trigonometrical system is established. The property of Fourier coefficient indices is investigated, at which the specified exact order is achieved.
The Basic Mixed Plane Boundary Value Problem of Statics in the Elastic Mixture Theory
Authors: Basheleishvili M. , Zazashvili SH. 
Published: May 2019

Abstract
The basic mixed plane boundary value problem of equations of statics of the elastic mixture theory is considered in a simply connected domain when the displacement vector is given on one part of the boundary and the stress vector on the remaining part. The problem is investigated using the general displacement vector and stress vector representations obtained in [Basheleishvili, Georgian Math. J. 4: 223–242, 1997]. These representations enable us to reduce the considered problem to a system of singular integral equations with discontinuous coefficients of special kind. The solvability of this system in a certain class is proved, which implies that the basic plane boundary value problem has a solution and this solution is unique.
Colimits in the Crossed Modules Category in Lie Algebras
Authors: Casas J. M. , Ladra M. 
Published: May 2019

Abstract
In this paper a left adjoint is constructed for the restriction (or pullback) functor associated to a morphism of Lie algebras. Colimits in the category of crossed modules in Lie algebras and a new result on crossed modules induced by a morphism of Lie algebras ι : P → Q in the case where ι is the inclusion of an ideal, are obtained.
On Some (H p,q , L p,q )-Type Maximal Inequalities with Respect to the Walsh–Paley System
Authors: Goginava U. 
Published: May 2019

Abstract
The boundedness of Cesáro maximal operators for multiple Walsh–Fourier series is studied from the martingale Hardy–Lorentz space Hpq
into the Lorentz space Lpq
. Supremum in the maximal operators is taken over a positive cone.
Beyond motion: ‘Come’ and ‘go’ in Persian oral narratives
Authors: Feiz Parastou 
Published: May 2019

AbstractThis paper presents a discourse-analytic study of the verbsaamadan‘come’ andraftan‘go’ in Persian as they appear in thirty oral elicited narratives and uses English narratives based on identical stimuli as a reference point for a comparative analysis. The paper argues that despite certain similarities, the two sets of verbs in English and Persian have clear differences, both in terms of the syntactic structures in which they appear and their functions within the stories. Notably, beyond the expression of translational motion,aamadanandraftanencode aspect, subjectivity, and the speakers’ perspectives on certain elements of the events as the stories unfold in their memories. Such choices in grammatical structures of the narratives can reveal much about the speakers’ underlying cognitive processing and contribute to the understanding of the speakers’ conceptual image of the story line.
Fabrication of highly homogeneous and controllable nanogratings on silicon via chemical etching-assisted femtosecond laser modification
Authors: Huang Ji , Jiang Lan , Li Xiaowei , Wang Andong , Wang Zhi , Wang Qingsong , Hu Jie , Qu Liangti , Cui Tianhong , Lu Yongfeng 
Published: May 2019

Abstract
Femtosecond laser direct writing is widely exploited in surface periodic structures processing. However, this technique still faces challenges in obtaining high surface homogeneity and flexible morphology controllability. In this study, a flexible and efficient approach has been proposed to fabricate highly homogeneous and controllable nanogratings on silicon via chemical etching-assisted femtosecond laser modification. By precisely manipulating the laser-material interaction process, alternating amorphous-crystalline nanofringes are generated when employing femtosecond laser scanning over a Si sample, with almost no material removal. Following auxiliary chemical etching, highly homogeneous nanograting structures are obtained, and the morphology of the nanogratings can be flexibly managed through precisely controlling the duration of the etching process. Complex cross-scale patterns with remarkable structural colors that are visible under indoor light illumination are readily achieved on the sample surfaces exploiting our method. In addition, compared with traditional methods for laser-induced periodic surface structures, the fabrication efficiency is considerably improved. Our processing procedure offers potential applications in the fields of optics, nanoelectronics, and mechatronics.
Disappearing ink! Unraveling the fading of a contemporary design object
Authors: Smith Gregory D. , Chen Victor J. , Hostettler Kurt F. , Phipps Caitlyn E. 
Published: May 2019

AbstractIn 2009 the Indianapolis Museum of Art acquired Fernando Brizio’s contemporary ceramic, Painting a Fresco with Giotto#3, as part of its effort to grow a collection of modern and contemporary European design objects. The artwork comprises an unglazed white faience vase that has been pierced with 30 brightly colored felt-tip markers whose dried ink stains create a whimsical polka-dot surface. The vase immediately joined a traveling exhibition, and when it returned to the museum after nearly a year of display, many of the ink spots had faded dramatically, some having nearly vanished. Technical analysis was undertaken to (1) determine the cause of the fading and the composition of its Giotto brand Turbocolor markers, (2) to determine the future fading potential of the object, and (3) to suggest new safeguards to protect this and similar objects from future damage. Non-destructive analysis of the vase using Raman spectroscopy proved challenging due to the overall application of an acrylic varnish by the artist and the intense fluorescence of many of the marker inks. Using liquid chromatography with mass spectrometry on surrogate pens acquired in 2014, the 30 markers utilized in the object were ultimately determined to contain 9 primary synthetic dyes and numerous synthetic byproducts. The inks are comprised of food colorants, which accounts for their rapid fading. In situ microfade testing showed that the vase is still extremely light sensitive and will fade further under even the most stringent lighting protocols. An artist interview provided valuable information about Brizio‘s thoughts concerning the life of these objects, his working methods, and the interpretation of theGiottoseries of ceramics. The artwork has since been deaccessioned from the museum’s collection but has taken on a new role in gallery didactics focused on the materials of modern design and the ephemeral and changing nature of some artworks. This project highlights the urgency of characterizing the fading rate of potentially light sensitive modern art or directly identifying the colorants used in contemporary artworks prior to their first exhibition.
Die Produzenten in moralisierten Märkten
Authors: Arnold Nadine 
Published: May 2019

ZusammenfassungIn Studien zu moralisierten Märkten bildet die Produktionsseite einen blinden Fleck. Dieser Artikel erforscht, wie sich eine moralisch aufgeladene Idee verändert, wenn sie an die Orte der Produktion getragen wird. Unter Bezugnahme auf die neo-institutionalistische Translationstheorie wird untersucht, wie das für moralisierte Märkte exemplarische Modell des Fairen Handels durch ghanaische Produzentenorganisationen übersetzt wird. Die empirische Studie zeigt, dass die Moralisierung an die Konsumarena gekoppelt ist und die Fairtrade-Idee während ihrer Reise in die Produktionsarena zu einem Treiber der organisationalen Rationalisierung mutiert. Der Artikel erklärt, wie die Synchronität dieser unterschiedlichen Interpretationen des Fairtrade-Modells sichergestellt wird und beleuchtet die Schattenseiten der intensivierten Organisationsbestrebungen auf der Produktionsseite.
Deficient pregnenolone synthesis associated with congenital adrenal hyperplasia and organelle dysfunction
Authors: Bose Himangshu S , Rice Alan M , Marshall Brendan , Gebrail Fadi , Kupshik David , Perry Elizabeth W 
Published: May 2019

SummarySteroid hormones are essential for the survival of all mammals. In adrenal glands and gonads, cytochrome P450 side chain cleavage enzyme (SCC or CYP11A1), catalyzes conversion of cholesterol to pregnenolone. We studied a patient with ambiguous genitalia by the absence of Müllerian ducts and the presence of an incompletely formed vagina, who had extremely high adrenocorticotropic hormone (ACTH) and reduced pregnenolone levels with enlarged adrenal glands. The testes revealed seminiferous tubules, stroma, rete testis with interstitial fibrosis and reduced number of germ cells. Electron microscopy showed that the patient’s testicular mitochondrial size was small with little SCC expression within the mitochondria. The mitochondria were not close to the mitochondria-associated ER membrane (MAM), and cells were filled with the microfilaments. Our result revealed that absence of pregnenolone is associated with organelle stress, leading to altered protein organization that likely created steric hindrance in testicular cells.Learning points:Testes revealed seminiferous tubules, stroma, rete testis with interstitial fibrosis and reduced number of germ cells;Testicular mitochondrial size was small with little SCC expression within the mitochondria;Absence of pregnenolone is associated with organelle stress.
Free Fatty Acids as an Indicator of the Nonfasted State in Children
Authors: Collins Shavonne M. , Broadney Miranda M. , Ghane Nejla , Davis Elisabeth K. , Jaramillo Manuela , Shank Lisa M. , Brady Sheila M. , Yanovski Jack A. 
Published: May 2019

BACKGROUND:
Ensuring children are fasting for blood draws is necessary to diagnose abnormalities in glucose homeostasis. We sought to determine if serum free fatty acid (FFA) concentrations might be a useful marker to differentiate the fed and fasted states among children.

METHODS:
A total of 442 inpatient (fasting) and 323 (postglucose load) oral glucose tolerance test samples of glucose, insulin, and FFA from children (age 5–18 years) who had healthy weight, overweight, or obesity were examined by receiver operating characteristic (ROC) curve analysis to identify a cut point for nonfasting. In a cross-sectional study, we compared mean FFA and percentage of FFA values below this cut point as a function of inpatient (n = 442) versus outpatient (n = 442) setting.

RESULTS:
The area under the curve of FFA was significantly better (P values &lt; .001) than the area under the curve of glucose or insulin for identifying nonfasting. FFA &lt;287 mEq/mL had 99.0% sensitivity and 98.0% specificity for nonfasting. Mean FFA was lower in outpatients than inpatients (P &lt; .001); only 1.6% inpatient but 9.7% outpatient FFA values were consistent with nonfasting (P &lt; .001).

CONCLUSIONS:
Clinicians cannot assume that pediatric patients are adequately fasted on arrival for fasting blood work. On the basis of having significantly lower outpatient than inpatient FFA values and more frequently suppressed FFA, children appeared less likely to be fasting at outpatient appointments. FFA value &lt;287 mEq/mL was a sensitive and specific cutoff for nonfasting in children that may prove clinically useful.
Desarrollo de la competencia sociolingüística por aprendices de español en un contexto de inmersión en el extranjero, by Francisco Salgado-Robles (2018)
Authors: Martín Gómez Antonio 
Published: May 2019

Desarrollo de la competencia sociolingüística por aprendices de español en un contexto de inmersión en el extranjero Francisco Salgado-Robles (2018) Bern: Peter Lang. Pp. 241 ISBN: 978-3-0343-2323-9
An examination of the relationship between alexithymia and somatic complaints of mothers and obsessive-compulsive features of children
Authors: ÜNÜBOL Hüseyin , YILMAZER KAYA Meryem Büşra 
Published: May 2019

Objective:The study aims to determine the relationship of alexithymic features and somatization levels in their mothers to obsessive-compulsive features in children.Participants:The sample of our research is composed of 173 mothers and 173 children who are in high school in Osmaniye province. Methods:Sociodemographic data form developed by the researcher, Symptom Check List (SCL-90-R) (Somatisation subscale), Maudsley Obsessive Compulsive Questionaire (MOCQ), and 20-item Toronto Alexithymia Scale (TAS-20) is used as a data collection tool. Results:It was found that there was a strong positive correlation between MOCQ total scores of children with SCL-90's (r = 0,776) Somatization subscale scores and Alexithymia Total scores (r = 0,613) of mothers. Also, all Subscales of MOCQ scores are correlated with TAS-20 subscales and SCL-90 (Somatization subscale) except rumination subscale of MOCQ scales. Conclusion:Mothers who come from ignorant feelings and have somatic complaints affect the relationship with their children significantly. As a result of this relationship, obsessive thoughts increase in children.
Linear Block Coding and Discrete Wavelet Transform Based Audio Signal Transmission over AWGN and Rician Fading Channels
Authors: KARAGÖL Serap , YİLDİZ Dogan 
Published: May 2019

Mobile communication
has become an important part of our daily lives for voice communication, data
sharing and access over the Internet. Mobile communication is an open network,
so maintaining the privacy and reliability of data has always been anxiety. The
reliability of the data against channel noise can be achieved by various error
correction codes. The purpose of the channel coding process is to reduce the
effect of some disruptive elements that the data is influenced in the
transmission phase as much as possible. This procedure ensures that the data is
delivered to the receiver with minimum error. In this study, a communication
system was established in MATLAB environment for the transmission of five
second audio signal. In this communication system, BER and MSE performances of
four phase shift keying methods are obtained first. In the second phase of the study, the AWGN and
Rician fading channels were individually coded with four different LBC types.
Performance evaluation of these coding types was done with BER and MSE
criteria. In the last part of the study, it was investigated which wavelet
family is suitable for which level, in order to ensure audio transmission over
AWGN and Rician fading channels with the least possible error. Four wavelet
transform families at different levels were applied to the audio signal for LBC
(7, 4), LBC (15, 8), LBC (17, 8) and LBC (23, 12) encoded channels, and the
Mean Squared Error (MSE) performances were compared.
José Antonio Saco: An Early Critic of Anti-Semitism
Authors: Silverstein Stephen 
Published: May 2019

En el actual estudio, leo una carta publicada por el intelectual cubano José Antonio Saco en 1829 al lado de las Réflexions sur la question juive (1946) de Jean-Paul Sartre, ya que encuentro que las tesis centrales de estos dos ensayos tienen varios puntos de contacto. El ensayo de Sartre y su recepción, por otra parte, ayudará a deslindar dónde la carta de Saco anticipa la teoría crítica de la raza que surge posteriormente y varios casos en los cuales, a pesar de su perspicacia, Saco se equivoca. Habiendo resumido estas intersecciones, adopto la intervención ética de Emmanuel Levinas y sugiero que fue la relación empírica de cara a cara del cubano con un judío en Nueva York lo que motivó su meditación abierta y no convencional sobre el odio hacia el judío; en otras palabras, además de enseñarle inglés, el tutor judío de Saco le enseñó que, como decía Levinas, “puede existir un yo que no sea un yo mismo”.
A colonização vista por Marx: para além de alguns mal entendidos
Authors: Herrera Remy 
Published: May 2019

Este artigo analisa a evolução das posições de Marx sobre a colonização. Ele enfatiza a invariante dessas reflexões, a saber, a denúncia da violência colonial. No ponto de partida, encontramos uma interpretação da colonização como um processo de modernização e civilização, então, gradualmente, como uma dinâmica de destruição-regeneração, ligada, ao mesmo tempo, à unificação do mundo e à marcha em direção à revolução. Por último, e especialmente, o autor identificaas inflexões sucessivas do pensamento de Marx - resolutamente crítico da colonização - sobre questões coloniais e nacionais, o caráter não linear da história e a diferenciação das formações sociais.
Comunidades tradicionais e sindicatos em conflito com estado e capital em Barcarena (PA)
Authors: Hazeu Marcel Theodoor , Costa Solange Maria Gayoso da , Fialho Nascimento Nádia Socorro 
Published: May 2019

Neste artigo apresenta-se o processo histórico de organização e resistência de comunidades tradicionais e de trabalhadores residentes no município de Barcarena (PA) frente à violação de seus direitos decorrentes da implantação de complexo industrial-portuário-urbanístico, iniciado na década de 1980, pelo Estado no exercício de ação funcional à territorialização do Capital na região. Como metodologia adotou-se a revisão bibliográfica e observações durante as audiências públicas que ocorreram nos anos 2017 e 2018 em processos de licenciamento e desastres ambiental. Conclui-se que, no contexto da restruturação produtiva, o protagonismo de comunidades tradicionais e trabalhadores e suas contradições possibilitaram forjar uma organização social e política que fortalece a resistência frente ao avanço do grande capital na Amazônia.