bluuebunny/crossref_metadata_2025 huggingface dataset:
Schur Algorithm for the Integral Representations of Lacunary Hankel Forms
Authors: Alegria P.
Published: December 2016

A Schur type algorithm for the lacunary Nehari problem making use of the extensions of certain isometrics is shown. A parametrization of the solution set is also obtained. A constructive method that provides the solutions by a sequence of Schur type parameters is developed. In the case of the classical Nehari problem, this algorithm gives the classical Schur parameters for the Carathéodory-Fejér interpolation problem. Here we propose another way to solve this problem, namely as an application of the Nehaii problem via the problem of the extension of isometrics associated to it. This point of view will lead in a forthcoming paper to the generalization of the results to the matricial case.
On Approximation-Solvability of Nonlinear Equations in Reflexive Banach Spaces
Authors: Verma Ram U. , Debnath L.
Published: December 2016

We extend the Zarantonello numerical range to the case of reflexive Banach space opera-tors, and study the approximation-solvability of nonlinear equations relating to the results of Zeidler (1990).
Smooth Interpolating Curves and Surfaces Generated by Iterated Function Systems
Authors: Massopust Peter R.
Published: December 2016

We construct

C^1

- and

C^2

-interpolating fractal functions using a certain class of iterated function systems. An estimate for the box dimension of the graph of nonsmooth fractal functions generated by this new class is presented. We then generalize this construction to hi variate functions thus obtaining

C^1

-interpolating fractal surfaces. Finally,

C^n

-interpolating fractal surfaces are constructed via integration over

C^0

fractal surfaces.
On a Singular Perturbation Problem for Rotating Magnetic Fluids
Authors: Beyer Klaus , Günther Matthias
Published: December 2016

As a singular counterpart to the Newton and Plateau equilibrium figures of rotating stars or drops, respectively, we investigate magnetic drops rotating in weakly nonhomogeneous fields. Existence and uniqueness of a familyof equilibrium figures near to the sphere is established.
Weithed Spaces of Pseudocontinuable Functions and Approximations by Rational Functions with Prescribed Poles
Authors: Katsnelson Victor
Published: December 2016

The main result of this paper provides an essential intermediate step for the proof of the authors theorem on left and right Blaschke-Potapov products which yields more insight into the structure of

J

-inner functions. The goal of this paper is to prepare an appropriate backward Schur-Potapov algorithm by solving a weighted approximation problem.
The SILP-Relaxation Method in Optimal Control: General Boundary Conditions II
Authors: Rudolph Helmut
Published: December 2016

In the first part of this paper the measure-theoretical approach to classical control problems, based on ideas of Young in variational calculus and developed by Rubio for control problems, was slightly extended by choosing a semi-infinite approach instead of a finite one. This results in a lower bound for the global minimum and an approximation for the optimal solution. It was still an open question, whether Rubio’s Approximation Theorem holds in the semi-infinite case and for more general boundary conditions. The second part of the paper deals with the discussion of the approximation properties and gives as an example the numerical treatment of a nice geometric extremal problem by Focke.
Error Bounds for Projection-Type Iterative Methods in Solving Linear Operator Equations
Authors: Isernhagen Volker
Published: December 2016

Error bounds using angles between fixed point sets of orthoprojectors are presented for generalized PSH- and SPA-methods.
On a Full Discretization Scheme for a Hypersingular Boundary Integral Equation over Smooth Curves
Authors: Kieser R. , Kleemann B. , Rathsfeld A.
Published: December 2016

In this paper we consider a quadrature method for a hypersingular integral equation arising from a boundary integral formulation for the Neumann problem in a two-dimensional domain with smooth boundary. We prove that this method is equivalent to the trigonometric.Galerkin method. Consequently, we obtain stability and asymptotic error estimates in the scale of Sobolev spaces. Finally, we present some numerical tests.
Singular Integral Operators with Operator-Valued Kernels on Spaces of Homogeneous Type
Authors: Bordin Benjamin , Lass Fernandes Dicesar
Published: December 2016

We give a generalized form of the Hormander-Schwartz-Triebel theorem for singular integral operators of potential type as well as a sequentiaI version. Applications include fractionary maximal inequalities of Hardy- Littlewood and Fefferman-Stein type.
An Explicit Representation of the Remainder of some Newton-Cotes Formulas in Terms of Higher Order Differences
Authors: Büttgenbach Bernhard , Lüttgens Gerald , Nessel Rolf Joachim
Published: December 2016

Depending upon the exactness of the rule, the remainders of some Newton-Cotes formulas are explicitly represented in terms of higher order differences. Consequently, those error bounds for the associated compound quadrature processes, given via corresponding moduli of continuity, may now beestablished in a completely elementary way, in fact with good constants. As an application of previous quantitative extensions of the uniform boundedness principle it is finally shown that the error estimates considered are always sharp.
A Remark on Interpolation with Generalized Parameters
Authors: Puhl Joachim
Published: December 2016

We study a generalized form of the Lions-Peetre interpolation spaces

(A_0,A_1)_{\theta q}

, where the parameter

\theta

and

q

are substituted in a natural way by suitable sequences

u

and lattices

a

, respectively. A reiteration theorem is proved and applications to generalized Lorentz spaces are given.
On the Volume Infimum for Liquid Bridges
Authors: Finn Robert , Vogel Thomas
Published: December 2016

We consider the “Carter conjecture”, that any stable liquid bridge in zero gravity, joining two parallel plates separated by a distance h and meeting each plate with constant angle, has volume greater than or equal to

h^3/\pi

. We prove the conjecture in the case of the two contact angles being equal.
Lösung von Kontaktaufgaben bei parabolischen Randanfangswertproblemen
Authors: Wanka Johanna
Published: December 2016

A contact boundary value problem for a

n

-dimensional second order linear parabolic differential equation is considered in this paper. By a potential statement the problem is converted into an integral equation. By investigating this equation existence and regularity theorems are obtained.
On the existence of the solution of an abstract optimization problem related to a quasi-variational inequality
Authors: Bruckner Gottfried
Published: December 2016

A general concept is given to get existence and regularity results for an optimization problem that is closely connected to a quasi-variational inequality.
Some properties of a new kind of modulus of smoothness
Authors: Totik Vilmos
Published: December 2016

The modulus of smoothness

\omega (f, \delta)_{\varphi, p} = \mathrm {sup}_{0 < h ≤ \delta} \| \Delta^2_{h, \varphi} \|_{L^p}

has arisen during the investigation of positive operators of the Kantorovich type. Here we show that

\omega_{\varphi, p}

resembles the ordinary case

\varphi = 1

and we give the characterization of those functions

f

for which

\omega (f, \delta)_{\varphi, p} = O (\delta^2)

. The results obtained have applications to positive operators.
Interpretation of zircon corona textures from metapelitic granulites of Ivrea-Verbano Zone, Northern Italy: Two-stage decomposition of Fe-Ti oxides
Authors: Kovaleva Elizaveta , Austrheim Håkon , Klötzli Urs
Published: December 2016

Abstract. In this study we report the occurrence of zircon corona textures in metapelitic granulites of the Ivrea-Verbano Zone. Unusual zircon textures are spatially associated with Fe-Ti oxides and occur as (1) vermicular-shaped aggregates 50–200 µm long and 5–20 µm thick, and as (2) zircon coronas and fine-grain chains, hundreds of µm long and ≤ 1 µm thick, spatially associated with (1). Formation of such textures is a result of mineral-fluid reactions, which occurred in two stages and involved: (1) decomposition of ilmenite to Zr-rich rutile and vermicular-shaped zircon during peak metamorphism and initial cooling stage, and (2) recrystallization of Zr-rich rutile to Zr-depleted rutile and submicron-thick zircon coronas during further exhumation and cooling. We also observed hat-shaped grains that are composed of preexisting zircon overgrown by zircon coronas during stage (2). Hat-shaped grains have a flat surface towards the oxide phase, which indicates partial dissolution of preexisting zircon grain. Formation of vermicular zircon (1) preceded ductile and brittle deformation of the host rock, as vermicular zircon is found both plastically- and cataclastically-deformed. Formation of thin zircon coronas (2) was coeval with or soon after the brittle deformation, as coronas occasionally fill fractures in the host rock. Occurrences of zircon coronas has important implications in fundamental studies regarding metamorphism, metasomatism and element transport in the Earth’s crust. We demonstrate that metamorphic zircon can nucleate and grow as a result of hydration reactions at the cooling stage after granulite-facies metamorphism, and reflects stages of rock evolution. Zircon corona textures are the tool for indicating metamorphic and metasomatic reactions in the host rock, and establish the directions of the reaction front.
Inelastic compaction and permeability evolution in volcanic rock
Authors: Farquharson Jamie I. , Baud Patrick , Heap Michael J.
Published: December 2016

Abstract. Active volcanoes are mechanically dynamic environments, and edifice-forming material may often be subjected to significant amounts of stress and strain. It is understood that porous volcanic rock can compact inelastically under a wide range of in situ conditions. In this contribution, we explore the evolution of porosity and permeability – critical properties influencing the style and magnitude of volcanic activity – as a function of inelastic compaction of porous andesite under triaxial conditions. Progressive strain accumulation is associated with progressive porosity loss. The efficiency of compaction was found to be related to the effective confining pressure under which deformation occurred: at higher effective pressure, more porosity was lost for any given amount of strain. Permeability evolution is more complex, with small amounts of stress-induced compaction ( 0.20) where samples may undergo a reduction in permeability by two orders of magnitude relative to their initial values. A physical limit to compaction is discussed, which we suggest is echoed in a limit to the potential for permeability reduction in compacting volcanic rock. Compiled literature data illustrate that at high strain (both in the brittle and ductile regimes), porosity ϕ and permeability k tend to converge towards intermediate values (i.e. 0.10 ≤ ϕ ≤ 0.20; 10–14 ≤ k ≤10–13 m2). These results are discussed in light of their potential ramifications for impacting edifice outgassing – and in turn, eruptive activity – at active volcanoes.
Xaquín Marín: arte y compromiso en el humor gráfico gallego
Authors: Caballero Wangüemert Félix
Published: December 2016

A partir de 1970 se abre un periodo de esplendor en el humor gráfico gallego que tiene como uno de sus principales protagonistas a Xaquín Marín. El dibujante ferrolano, que desde 1988 colabora diariamente en La Voz de Galicia, llevará adelante una obra sin parangón, tan personal como gallega y universal, que ha hecho de él el humorista gráfico más relevante desde Castelao. Nadie ha innovado tanto formalmente ni ha descrito como él los profundos cambios experimentados por Galicia en los últimos 50 años. Este artículo profundiza en las claves de su particular universo artístico.
Historia del reporterismo español. Estudio de caso de Miguel de la Quadra-Salcedo bajo la perspectiva digital
Authors: Segarra-Saavedra Jesús , Páramo-Galdón Patricia
Published: December 2016

El reporterismo en España cuenta con una profusa labor periodística y numerosos profesionales desplazados hasta los lugares donde surgen los hechos y desde los que son narrados. En un contexto de difusión democratizada, digital, ubicua, social y multipantalla, resulta necesario acercarse a la historia del periodismo de reportero en nuestro país, así como conocer la labor realizada para ponerla en valor. El presente artículo estudia la figura de Miguel de la Quadra-Salcedo y la digitalización de su obra periodística llevada a cabo por TVE. Así mismo, rastrea su presencia en las principales redes y plataformas sociales justo antes y después de su fallecimiento.
Biografía periodística de José Ponce Bernal (Huelva 1898 – Madrid 1940
Authors: Mendoza Ponce Felicidad
Published: December 2016

José Ponce Bernal (Huelva 1898 – Madrid 1940) fue un periodista y político español que vivió en el primer tercio del siglo XX, cuya vida y obra ha sido objeto de una tesis doctoral. Es un ejemplo de periodista que veía en la profesión el instrumento idóneo con la pretensión de cambiar la sociedad. A través de sus artículos quiso influir en el pensamiento de sus coetáneos y decidió pasar a la acción política. Fue un intelectual comprometido con la sociedad que le tocó vivir, en un momento social y político convulso. Su vinculación con las izquierdas lo condujo a un terrible final tras la guerra civil española.
De casadas a divorciadas. Separaciones, divorcios y nulidades matrimoniales en la sociedad colonial, Audiencia de Charcas, 1595-1640
Authors: Presta Ana María
Published: December 2016

Los crímenes y delitos perpetrados entre los esposos en la esfera privada rara vez se hacían públicos o conducían a la separación más allá de las diferencias e iniquidades que el deber obligaba a tolerar. El matrimonio, luego del Concilio de Trento, se convirtió en un lazo indisoluble, excepción hecha del fallecimiento de uno de los cónyuges. Sin embargo, existen voces femeninas que, tras los documentos notariales, expresan la desilusión, el descontento y el dolor por el maltrato, el adulterio y el engaño y que, esperanzadas en el tenue amparo eclesiástico ante la ruptura de un vínculo sacramental, recurren a la justicia y al derecho canónico solicitando la separación conyugal, el divorcio, o la nulidad del matrimonio.
La oposición antitrujillista, la Legión del Caribe y José Figueres de Costa Rica (1944-1949)
Authors: Dolores Ferrero María , Eiroa Matilde
Published: December 2016

En la década de 1940, los exiliados dominicanos, junto a otros centroamericanos, se unieron en la organización denominada Legión del Caribe con el objetivo de apoyarse mutuamente contra las dictaduras. Acordaron comenzar la lucha contra Trujillo y Somoza, pero la coyuntura aconsejó posponer los planes iniciales y se implicaron en la guerra civil o revolución de Costa Rica de 1948. Los dominicanos Horacio Ornes y Juan Rodríguez dirigieron la activa participación en el conflicto que terminaría con la toma del poder por José Figueres (presidente de facto de 1948 a 1949), que no hubiera sido posible sin la Legión del Caribe. Sin embargo, José Figueres no asumió posteriormente su compromiso con la Legión y las reclamaciones dominicanas nunca se atendieron.
Distribution of invasive plants in the Nitra river basin: threats and benefits for food production
Authors: Fehér Alexander , Halmová Daniela , Fehér Pindešová Iveta , Zajác Peter , Čapla Jozef
Published: December 2016

Invasive plants are introduced multicellular organisms of the kingdom Plantae, which produce their food by photosynthesis. An invasive plant has the ability to thrive and spread aggressively outside its native range. A naturally aggressive plant may be especially invasive when it is introduced to a new habitat. The basic literature emphasizes mainly the ecological and environmental effects of invasive plants. Impacts of these plants on the food production have never been studied in details. The direct and indirect or potential effects of occurrence of invasive plants on food production have been analysed on basis of published data according to eight selected criteria: food, fodder for animals, food and drink additives, indirect support for food production, weeds on arable lands, meadow weeds, allergenic plants in food and toxic plants. The principal components analysis of habitat preferences of invasive plants in the Nitra river basin showed that the majority of invasive plants growing along rivers is edible (Fallopia spp., Helianthus tuberosus, Impatiens glandulifera) and invasive plants preferring drier agricultural fields or grasslands are toxic and/or allergenic with low or zero level of edibility (Ambrosia artemisiifolia, Heracleum mantegazzianum). The plants living in drier conditions may produce more toxins to protect the sources (eg. water) in their tissues than plants near water flows where there is abundance of sources.
The possibilities of increasing lignan content in food
Authors: Kulichová Jana , Hí­c Pavel , Balí­k Josef , Tří­ska Jan , Vrchotová Naděžda , Houška Milan
Published: December 2016

Lignans are bioactive substances which belong to polyphenols. This compounds can be found in plants including coniferous trees. Lignans are secondary plant metabolites with wide range of biological effects, such as antimicrobial, antivirus or anticancer. They also serve as antioxidants and are naturally occurring compounds which are found in food rich in fibre. There are more than 200 lignans that originate from more than 70 plant families. They can be found in all parts of the plant, mainly in seeds. Almost 37% of total lignan intake in human diet comes from drinking tea and coffee. Fruit and vegetable contain only about 1% of lignans, but they are also significant source of lignans because they are consumed in higher amounts than seeds. 7-hydroxymatairesinol is the main representative of lignans. It is white powder with great health benefits and it is present in the knots of coniferous trees, especially in knots of spruce. Lignans were extracted from the knots and used for fortifying fruit and vegetable spreads. Subsequently, the fortified products became subject to sensory analysis, their antioxidant capacity was measured by the FRAP method, total polyphenols content was found and lignan content determined using the HPLC method. The aim was enriching commonly consumed foods by healthy lignans to avoid negative effects on the sensory quality of these products by the bitter taste of the lignan extract. Of the tested foods, plum jam and red pepper paste are the best options as they best block the bitter taste of lignans. There was a positive increase in antioxidant capacity in food products fortified by the lignan extract. For plum jam, strawberry jam, strawberry spread and red pepper paste, the more lignans were added to the products, the greater was the level of antioxidant capacity. The highest antioxidant capacity was reached in samples with the added amount of 340 mg of lignan per kg of product. As with the antioxidant capacity, total polyphenols content is dependent on the quantity of added lignans. Plum jam is the only exception, for which there was no statistically evident difference between the doses of 170 mg and 340 mg of lignans per kg. The values of lignans measured for samples with added 340 mg of lignans per kg range from 313 mg to 339 mg. For samples with addition of 170 mg of lignans per kg the measured values range from 129 to 164 mg per kg. Although lignans are beneficial for health, they are not acceptable to deteriorate taste of the product. The samples containing the highest dose of lignans, i.e. 340 mg of lignans per kg, were rated as the least acceptable by consumer. Evaluated as the most suitable in this regard was plum jam with a dose of 170 mg of lignans per kg of product where lignans were not found to possess a sensory effect on the acceptability of the product.
The Time - Varying Natural Rate of Interest and Its Fundamental Determinants: Time Series Evidence from Turkey
Authors: Siklar Ilyas , Yildiz Umit , Cakan Sinan
Published: December 2016

In this study, by estimating the natural rate of interest, its relationship with key macroeconomic variables is analyzed using the time series data obtained from Turkey. As a first step, together with the natural rate of interest, the potential levels of output, prices and foreign exchange rate are estimated by using the Kalman Filter algorithm and then the related gap levels of each variable representing the deviations from their potentials are determined. As a second step of the study, the effects of output, price and exchange rate gaps on the interest rate gap are analyzed by using cointegration and error correction methodologies and the causality relationship among variables are examined. The main conclusion of the current study is that there is significant causality relationship between the interest rate gap, output, price and exchange rate gaps.
The Impact of Intellectual Capital on Business Performance (Case Study: Shiraz Travel Agencies)
Authors: Roghayeh Jokar Payborji, , Hassan Karnameh Haghighi,
Published: December 2016

As the most important capital in today’s global economy, knowledge has replaced physical and financial capitals, and the knowledge-based business environment needs an approach that encompasses new intangible organizational assets. In fact, responses that organizations have given to today’s environments indicate that they must rely on intangible resources that were previously unattended. By asking whether the intellectual capital has an impact on business performance of travel agencies in Shiraz, we seek to prove the effect of intellectual capital components on the performance of these agencies.The required statistics and information were collected and analyzed on the basis of empirical research in Shiraz and using a sample size of 142. According to the findings of this study, there is a significant relationship between intellectual capital and business performance and its components, and all aspects of intellectual capital positively and significantly influence productivity, profitability and reputation of the companies. In fact, it can be said that being aware of the importance of intellectual capital will bring about productivity and a better performance, and on the contrary, not paying enough attention to this important issue will result in poor economic performance.
Validity of the Capital Asset Pricing Model (CAPM) for Securities Trading at the Nairobi Securities Exchange (NSE)
Authors: Janata Georgas
Published: December 2016

This research undertakes an empirical analysis of the validity of the Capital Asset Pricing Model (CAPM) for securities trading at the Nairobi Securities Exchange (NSE). Based on the critical conditions of the CAPM model, the specific objectives of the research were: to evaluate the level of systematic risks for firms listed on the NSE, to evaluate the rate of return for individual stocks listed on the NSE, to evaluate the rate of return for the NSE, to analyze the relationship between systematic risk and expected returns for firms listed on the NSE, and to evaluate the value of the intercept term for firms listed on the NSE. Fama & Macbeth’s two-pass regression method is applied to a sample of eighteen firms trading at the NSE, with the most recent data (May 2013 –May 2016) being used. By virtue of finding a beta value that is statistically different from zero, the study concludes that the CAPM is not a valid model for explaining risk-return relationships at the NSE. Other critical conditions which the findings violate include: the hypothesized linear risk-return relationship, and the hypothesized zero value for the intercept. Some of the failures of the CAPM are attributed to its theoretical failings, and specifically, its many unrealistic and simplifying assumptions. Although this study addresses the methodological weaknesses of prior studies by basing analysis on portfolios rather than individual stocks (thus correcting measurement error problems) and carrying out month-by-month cross-section regression (thus correcting residual errors); the methodology adopted still fails to account for anomalies in asset pricing. Therefore, in addition to recommending that future studies adopt methodologies that account for pricing anomalies, this study also recommends that future studies consider expanding the number of firms to study as well as the period of study. This can help to generate more observations, and therefore, better data fit.
Entre le « vous » et le « je » cet objet macabre: Intervention poétique-érotique dans « Une Charogne »
Authors: Calhoun Doyle
Published: December 2016

This paper provides a reading attentive to linguistic features of Baudelaire's poem "Une Charogne."
Towards an understanding of -ward(s) prepositions: a sociohistorical exploration of the distribution of near-identical variants
Authors: Bisbee Mary
Published: December 2016

English has a peculiar class of prepositions that exist in two nearly identical forms, one form with a zero ending (-Ø) and the other with an s (-s), all of them containing the Old English suffix -ward. Examples include toward(s), forward(s), onward(s), inward(s), and homeward(s). As language is, by its nature, systematic, it seems unlikely that the occurrence of one form instead of another is totally arbitrary. This project uses sociolinguistic and historical methods to explore some of the conditioning factors in the preference of one form over another, proposing that younger speakers will prefer the zero-ending form as it gradually replaces the other variant, and that the two forms will occur in distinctive environments (phonological, syntactic, or semantic) in issues of media publications.
Les évaluations de l’enseignement par les étudiants : vers une démarche abrégée
Authors: Harvey Léon
Published: December 2016

Cet article documente le processus de simplification de la démarche d’évaluation de l’enseignement par les étudiants. Cette simplification repose sur la conception d’un instrument abrégé qui permet de porter des appréciations valides et fiables sur la qualité de l’enseignement. Une comparaison des qualités psychométriques entre l’instrument original et abrégé est ainsi réalisée. En conclusion, certaines modifications de la version abrégée sont proposées, mais cette version représente néanmoins un substitut adéquat à la version originale.
Contribution à l’évaluation de l’activité professionnelle sur la base d’une CAH : le cas des éducateurs spécialisés
Authors: Manier Claudine , Abernot Yvan
Published: December 2016

À partir du constat qu’une profession (ici, celle de l’éducateur spécialisé) ne se réduit pas à l’analyse d’une situation à laquelle il conviendrait de réagir d’une manière standard, l’évaluation de ses acteurs n’est pas réductible à un décompte d’actes « performants ». L’évaluation d’un professionnel, impliqué dans une tâche complexe, passe impérativement par la prise en compte de ses propres objectifs. Le métier d’éducateur spécialisé est investi de manière très diverse par les professionnels, mais tous doivent établir des rapports d’activité. À partir de ces productions, quatre valeurs d’appui ont été mises en évidence et introduites dans un questionnaire à choix forcé par paires. Une classification ascendante hiérarchique (CAH) met en évidence six types d’organisation de ces valeurs comme autant de systèmes de sens à prendre en compte dans l’évaluation des professionnels. Cette formalisation trouve des répercussions dans la formation initiale et continue des professionnels.
Étude de la validité concourante de l’outil orientant québécois VIP à l’aide du questionnaire d’investigation des intérêts professionnels Hexa 3D
Authors: Bréhaut Solange , Demeuse Marc
Published: December 2016

Élaboré par des conseillères pédagogiques québécoises, l’outil VIP définit le type de personnalité dominant d’adolescents à partir de la typologie de Holland, tout en visant à susciter et à développer leur implication dans le processus d’orientation. La présente recherche teste la validité concourante de cet outil, en comparaison avec le questionnaire Hexa 3D, sur un échantillon d’élèves français de seconde générale et technologique. Les résultats montrent que des aménagements doivent être effectués afin d’améliorer les qualités psychométriques de l’outil VIP, mais que sa forme ludique stimule les élèves, ce qui permet de le considérer comme une première activité possible pour impliquer des élèves dans un processus d’orientation.
I've Got a Testimony: James Baldwin and the Broken Silences of Black Queer Men
Authors: Melton McKinley E
Published: December 2016

James Baldwin writes within and against the testimonial tradition emerging from the Black
Church, challenging the institution’s refusal to acknowledge the voices and experiences of
black queer men. Baldwin’s autobiographical novel, Go Tell It on the Mountain, creates a
space for Baldwin’s testimony to be expressed, and also lays the foundation for a
tradition of black queer artists to follow. In the contemporary moment, poet Danez Smith
inhabits Baldwin’s legacy, offering continuing critiques of the rigidity of conservative
Christian ideologies, while publishing and performing poetry that gives voice to their own
experiences, and those of the black queer community at large. These testimonies ultimately
function as a means of rhetorical resistance, which not only articulates black queer lives
and identities, but affirms them.
Post Conflict Peacebuilding in Kosovo. Milestones, Actors and People.
Authors: Gërxhi Albana
Published: December 2016

This article presents and analyses the postconflict peacebuilding actions in Kosovo. It aims to bring a picture of external and internal actors involved in such a process from the end of the conflict up to date. The article challenges peace process in Kosovo through the issues emerging in the Society due to the unsettled status enduring as of Security Council Resolution 1244. It is structured into three sections. The first section analyses the postconflict peacebuilding and statebuilding actions undertaken by external and internal actors right after the conflict. The second section deals with the issue of transitional justice as a key element on peacebuilding and how it was addressed. Whereas the third section analyses the current situation of the population with the issues inherited from the conflict and others emerged due to undefined actions of external and internal actors.
MUDANÇAS NO USO DO SOLO NA PROVÍNCIA DE IMBABURA, EQUADOR, NO PERÍODO DE 1990-2020
Authors: Celemin Juan Pablo
Published: December 2016

O desmatamento é um dos principais problemas ambientais que afetam o Equador. Por esta razão o Ministério do Meio Ambiente do Equador elaborou mapas de uso do solo para os anos 1190, 2000 e 2008 a fim de avaliar a evolução dos usos do solo. Estes mapas têm permitido de realizar a simulação do uso do solo para o ano 2020 a partir do uso de autômato celular presente em um sistema de informação geográfica. Primeiramente foi realizada uma simulação para o ano de 2008 que foi comparada com o mapa real desta data a fim de provar a robustez do processo. Os resultados indicam que para Imbabura a maior transferência de área de floresta para áreas agrícolas ocorreu no período de 1990 a 2000. No período de 2000 a 2008 a perda de área de floresta foi muito menor enquanto que a tendência no uso do solo para o ano de 2020 mostra uma leve recuperação. No entanto, existem limitações relacionadas à validação dos resultados que obrigam a considerar com cuidado a informação trazida pelas simulações.
A Targeted Functional Design for Highly Efficient and Stable Cathodes for Rechargeable Li‐Ion Batteries
Authors: He Guanjie , Han Xiaoyu , Zou Rujia , Zhao Tingting , Weng Zhe , Ho‐Kimura SocMan , Lu Yao , Wang Hailiang , Guo Zheng Xiao , Parkin Ivan P.
Published: December 2016

Despite the great success of Li‐ion batteries (LIBs) up to now, higher demand has been raised with the emergence of the new generation electrics, such as portable devices and electrical vehicles. Even with the improvement on anodes, the cathodes with high capacity and long‐lastingness still remain a challenge. New 3D NiCo2O4@V2O5 core–shell arrays (CSAs) on carbon cloth as cathodes in LIBs have been reported in this work. The nanodesigned materials realize the theoretical specific capacity of V2O5 with high power rate based on the total mass of the framework and amount of active materials. The electrodes achieve superb cycling stability, among the most stable cathodes for LIBs ever reported. From both in situ transmission electron microscopy and quantum level calculations, the 3D NiCo2O4 nanosheet frameworks provide high electron conductivity and the skeleton of the robust CSAs without participating in the lithiation/delithiation; the thickness of the layered V2O5 plays a key role for Li diffusivity and the capacity contribution of electrodes. The structures herein point to new design concepts for high‐performance nanoarchitectures for LIB cathodes.
Materials Chemistry of Nanoultrasonic Biomedicine
Authors: Tang Hailin , Zheng Yuanyi , Chen Yu
Published: December 2016

As a special cross‐disciplinary research frontier, nanoultrasonic biomedicine refers to the design and synthesis of nanomaterials to solve some critical issues of ultrasound (US)‐based biomedicine. The concept of nanoultrasonic biomedicine can also overcome the drawbacks of traditional microbubbles and promote the generation of novel US‐based contrast agents or synergistic agents for US theranostics. Here, we discuss the recent developments of material chemistry in advancing the nanoultrasonic biomedicine for diverse US‐based bio‐applications. We initially introduce the design principles of novel nanoplatforms for serving the nanoultrasonic biomedicine, from the viewpoint of synthetic material chemistry. Based on these principles and diverse US‐based bio‐application backgrounds, the representative proof‐of‐concept paradigms on this topic are clarified in detail, including nanodroplet vaporization for intelligent/responsive US imaging, multifunctional nano‐contrast agents for US‐based multi‐modality imaging, activatable synergistic agents for US‐based therapy, US‐triggered on‐demand drug releasing, US‐enhanced gene transfection, US‐based synergistic therapy on combating the cancer and potential toxicity issue of screening various nanosystems suitable for nanoultrasonic biomedicine. It is highly expected that this novel nanoultrasonic biomedicine and corresponding high performance in US imaging and therapy can significantly promote the generation of new sub‐discipline of US‐based biomedicine by rationally integrating material chemistry and theranostic nanomedicine with clinical US‐based biomedicine.
Molecularly Engineered Phthalocyanines as Hole‐Transporting Materials in Perovskite Solar Cells Reaching Power Conversion Efficiency of 17.5%
Authors: Cho Kyung Teak , Trukhina Olga , Roldán‐Carmona Cristina , Ince Mine , Gratia Paul , Grancini Giulia , Gao Peng , Marszalek Tomasz , Pisula Wojciech , Reddy Paidi Y. , Torres Tomás , Nazeeruddin Mohammad Khaja
Published: December 2016

Easily accessible tetra‐5‐hexylthiophene‐, tetra‐5‐hexyl‐2,2′‐bisthiophene‐substituted zinc phthalocyanines (ZnPcs) and tetra‐tert‐butyl ZnPc are employed as hole‐transporting materials in mixed‐ion perovskite [HC(NH2)2]0.85(CH3NH3)0.15Pb(I0.85Br0.15)3 solar cells, reaching the highest power conversion efficiency (PCE) so far for phthalocyanines. Results confirm that the photovoltaic performance is strongly influenced by both, the individual optoelectronic properties of ZnPcs and the aggregation of these tetrapyrrolic semiconductors in the solid thin film. The optimized devices exhibit PCE of 15.5% when using tetra‐5‐hexyl‐2,2′‐bisthiophene substituted ZnPcs, 13.3% for tetra‐tert‐butyl ZnPc, and a record 17.5% for tetra‐5‐hexylthiophene‐based analogue under standard global 100 mW cm−2 AM 1.5G illumination. These results boost up the potential of solution‐processed ZnPc derivatives as stable and economic hole‐transport materials for large‐scale applications, opening new frontiers toward a realistic, efficient, and inexpensive energy production.
The prognostic role of serum eosinophil and basophil levels in sinonasal polyposis
Authors: Brescia Giuseppe , Barion Umberto , Zanotti Claudia , Giacomelli Luciano , Martini Alessandro , Marioni Gino
Published: December 2016

Background

Predicting which patients are at a higher risk for recurrent chronic rhinosinusitis with nasal polyps (CRSwNP) is one of the most challenging problems in clinical rhinology. A direct association between CRSwNP recurrence rates and serum eosinophil and basophil counts was reported. This study aimed to identify best‐fitting cutoffs for binarizing preoperative serum eosinophils and basophils (counts/percentages) for prognostic purposes in cases of CRSwNP recurrence after surgery. A secondary endpoint was to distinguish said cutoffs for prognosticating recurrence in subcohorts of patients with histologically diagnosed eosinophilic/non‐eosinophilic CRSwNP.

Methods

A retrospective study was performed on 280 patients (127 eosinophilic and 153 non‐eosinophilic CRSwNP) examining the prognostic role of serum eosinophil and basophil levels.

Results

For all patients examined, mean preoperative serum eosinophil and basophil levels were significantly higher in patients whose CRSwNP recurred. Patients with eosinophil counts ≥0.24 cells × 109/L and percentages ≥3.7% had odds ratios (ORs) of 2.57 and 2.19 for recurrence; patients with basophil counts ≥0.03 cells × 109/L and percentages ≥0.5% had ORs of 2.19 and 2.24, respectively. Among histologically eosinophilic CRSwNP patients, mean eosinophils and basophils (counts/percentages) were significantly higher in cases that recurred. Serum eosinophil and basophil values were directly correlated. The recurrence odds were OR 2.52 for high eosinophils (≥5.9%), and OR 2.52 and 2.69 for high basophils (≥0.04 cells × 109/L and ≥0.5%, respectively).

Conclusion

High serum eosinophil and basophil values should be further investigated because they could pinpoint patients at higher risk of eosinophilic‐type CRSwNP recurrence. These preliminary results support the increasing interest in the role of basophils in CRSwNP.
Coupling Sensitive Nucleic Acid Amplification with Commercial Pregnancy Test Strips
Authors: Du Yan , Pothukuchy Arti , Gollihar Jimmy D. , Nourani Armin , Li Bingling , Ellington Andrew D.
Published: December 2016

The detection of nucleic acid biomarkers for point‐of‐care (POC) diagnostics is currently limited by technical complexity, cost, and time constraints. To overcome these shortcomings, we have combined loop‐mediated isothermal amplification (LAMP), programmable toehold‐mediated strand‐exchange signal transduction, and standard pregnancy test strips. The incorporation of an engineered hCG–SNAP fusion reporter protein (human chorionic gonadotropin‐O6‐alkylguanine‐DNA alkyltransferase) led to LAMP‐to‐hCG signal transduction on low‐cost, commercially available pregnancy test strips. Our assay reliably detected as few as 20 copies of Ebola virus templates in both human serum and saliva and could be adapted to distinguish a common melanoma‐associated SNP allele (BRAF V600E) from the wild‐type sequence. The methods described are completely generalizable to many nucleic acid biomarkers, and could be adapted to provide POC diagnostics for a range of pathogens.
Dimmable MR16 LED drivers with low output ripple and wide duty ratio operating range
Authors: Chen Po‐Yen , Pan Ching‐Tsai , Liu Yi‐Hua
Published: December 2016

In this paper, a novel single‐switch DC–DC converter is proposed for dimmable MR16 light‐emitting diode (LED) drivers. The proposed driver can achieve very low output voltage ripple without using MHz switching frequency; therefore, small non‐electrolytic capacitors can be used to achieve longer lifetime and higher efficiency. Also, because of special merit of the proposed converter, it can be designed so that much wider duty ratio operating range can be achieved for LEDs. Hence, better digital dimming level resolution can be attained. Finally, a prototype driver for MR16 LED lamps is constructed to demonstrate the effectiveness of the converter. Experimental results show that a maximum efficiency of 92% can be achieved. Copyright © 2016 John Wiley & Sons, Ltd.
Comparison of clustering methods for high‐dimensional single‐cell flow and mass cytometry data
Authors: Weber Lukas M. , Robinson Mark D.
Published: December 2016

Recent technological developments in high‐dimensional flow cytometry and mass cytometry (CyTOF) have made it possible to detect expression levels of dozens of protein markers in thousands of cells per second, allowing cell populations to be characterized in unprecedented detail. Traditional data analysis by “manual gating” can be inefficient and unreliable in these high‐dimensional settings, which has led to the development of a large number of automated analysis methods. Methods designed for unsupervised analysis use specialized clustering algorithms to detect and define cell populations for further downstream analysis. Here, we have performed an up‐to‐date, extensible performance comparison of clustering methods for high‐dimensional flow and mass cytometry data. We evaluated methods using several publicly available data sets from experiments in immunology, containing both major and rare cell populations, with cell population identities from expert manual gating as the reference standard. Several methods performed well, including FlowSOM, X‐shift, PhenoGraph, Rclusterpp, and flowMeans. Among these, FlowSOM had extremely fast runtimes, making this method well‐suited for interactive, exploratory analysis of large, high‐dimensional data sets on a standard laptop or desktop computer. These results extend previously published comparisons by focusing on high‐dimensional data and including new methods developed for CyTOF data. R scripts to reproduce all analyses are available from GitHub (https://github.com/lmweber/cytometry-clustering-comparison), and pre‐processed data files are available from FlowRepository (FR‐FCM‐ZZPH), allowing our comparisons to be extended to include new clustering methods and reference data sets. © 2016 The Authors. Cytometry Part A published by Wiley Periodicals, Inc. on behalf of ISAC.
The Pentasulfates A2[S5O16] (A = Li, Na, Cs, Ag): Rare Species by Reactions in SO3
Authors: Schindler Lisa Verena , Struckmann Mona , Becker Anna , Wickleder Mathias S.
Published: December 2016

The reaction of various sulfate salts A2SO4 (A = Li, Na, Ag, Cs) with neat SO3 led to the respective pentasulfates A2[S5O16] {Li2[S5O16]: monoclinic, C2/c, Z = 4, a = 1850.71(7) pm, b = 665.45(2) pm, c = 992.80(4) pm, β = 106.764(2)°, V = 1170.72(7) × 106 pm3; Na2[S5O16]: orthorhombic, Pbcn, Z = 4, a = 880.17(3) pm, b = 1039.88(4) pm, c = 1348.58(5) pm, V = 1234.32(8) × 106 pm3; Ag2[S5O16]: orthorhombic, Pbcn, Z = 4, a = 884.34(4) pm, b = 1043.19(5) pm, c = 1381.83(7) pm, V = 1274.8(1) × 106 pm3; Cs2[S5O16]: monoclinic, P21, Z = 4, a = 892.96(3) pm, b = 859.72(3) pm, c = 978.30(4) pm, β = 101.443(2)°, V = 736.11(5) × 106 pm3}. All four compounds are colorless and extremely moisture‐sensitive substances. They all contain the pentasulfate anion [S5O16]2– that has, until now, only been reported once. This comparative study of polysulfate salts with the same polysulfate anion, but varying countercations, is a crucial step in comprehending this very basic and, nevertheless, poorly investigated class of materials. Raman spectroscopy and powder diffraction complete the structural investigations.
Screening for hepatocellular carcinoma: What is missing?
Authors: Mehta Neil J. , Celik Aygul Dogan , Peters Marion G.
Published: December 2016

While there are guidelines from all major liver societies for the screening and management of hepatocellular carcinoma (HCC), many issues remain surrounding the actual practice of screening. This review discusses how to diagnose and screen HCC and more importantly, how well we diagnose and screen for HCC. Improved survival and outcomes after HCC diagnosis depend upon accurate diagnosis of cirrhosis and the timeliness of screening. With all oral direct‐acting antivirals now widely available for hepatitis C, there are increasing numbers of patients who may be cured but are still at risk of HCC. Some uncontrolled studies suggest that direct‐acting antiviral therapy may even increase the risk of HCC. Before we discuss expansion of who should be screened, we need physicians to realize how poorly we screen those patients who are already recommended for screening by guidelines. (Hepatology Communications 2017;1:18–22)
Seeing and knowing: Attention to illustrations during storybook reading and narrative comprehension in 2‐year‐olds
Authors: Kaefer Tanya , Pinkham Ashley M. , Neuman Susan B.
Published: December 2016

Research (Evans & Saint‐Aubin, ) suggests systematic patterns in how young children visually attend to storybooks. However, these studies have not addressed whether visual attention is predictive of children's storybook comprehension. In the current study, we used eye‐tracking methodology to examine two‐year‐olds' visual attention while being read an unfamiliar storybook. Immediately following reading, they completed a comprehension assessment. Children who visually attended to illustrations depicting key narrative events during the initial reading demonstrated stronger comprehension than children who focused on other areas. Importantly, visual attention to pertinent illustrations was also positively related to parental reports of vocabulary knowledge. Collectively, this supports a reciprocal model of early knowledge development: vocabulary knowledge facilitates visual attention, and visual attention to storybook illustrations facilitates subsequent learning.

Highlights

The current study examines two‐year‐olds comprehension of storybooks and whether this comprehension is impacted by their visual attention to illustrations and extant vocabulary.

This study uses eye‐tracking methodology to examine the relationship between extant vocabulary, visual attention to illustration and comprehension in two‐year‐olds.

This study found that two‐year‐olds visual attention to relevant illustration is predicted by their extant vocabulary and predicts comprehension.
Cytoplasmic Localization of RUNX3 via Histone Deacetylase‐Mediated SRC Expression in Oxidative‐Stressed Colon Cancer Cells
Authors: Kang Kyoung Ah , Piao Mei Jing , Ryu Yea Seong , Maeng Young Hee , Hyun Jin Won
Published: December 2016

Runt domain transcription factor 3 (RUNX3) is a transcription factor that functions as a tumor suppressor. RUNX3 is frequently inactivated by epigenetic silencing or its protein mislocalization (cytoplasmic localization) in many cancer types. This study investigated whether oxidative stress induces redistribution of RUNX3 from the nucleus to the cytoplasm. The cytoplasmic localization of RUNX3 was associated with oxidative stress‐induced RUNX3 phosphorylation at tyrosine residues via SRC activation. Moreover, oxidative stress increased expression of histone deacetylases (HDACs). RUNX3 phosphorylation and SRC expression induced by oxidative stress were inhibited by knockdown of HDAC1, restoring the nuclear localization of RUNX3 under oxidative stress. In conclusion, these results demonstrate that HDAC1‐ and SRC‐mediated phosphorylation of RUNX3 induced by oxidative stress is associated with the cytoplasmic localization of RUNX3 and can lead to RUNX3 inactivation and carcinogenesis. J. Cell. Physiol. 232: 1914–1921, 2017. © 2016 Wiley Periodicals, Inc.