bluuebunny/crossref_metadata_2025 huggingface dataset:
Investigation of Vilnius Upper Castle Vertical Deformations
Authors: Markelionis Mindaugas , Miltinytė Greta , Popovas Darius , Aksamitauskas Vladislovas Čelsovas
Published: September 2017

The aims of this study were to to review the monitoring methodology of the vertical deformations and to identify the reasons of deformations that occur in structures of Vilnius Upper Castle, Lithuania. Collected systemized data is processed with mathematical–statistical methods. In order to investigate the state of the buildings, a new cycle of measurements (XIV) was carried out in 2016. Data of all measurement cycles is presented and compared with previous data that was provided in technical reports of measurement cycles (first measurements began in 1968). In order to investigate conditions of the structures, data is presented graphically. When analyzing the graphics, it is possible to investigate changes of the buildings and possible causes of their appearance are presented. Long-term research and results have shown, that all the cracs and crevices that were found during monitoring (1968 to 2016) in Upper Castle’s structures were caused by large and uneven deformations.
A Minimum Size of the Search Cube in the MAFA-ILS Method
Authors: Nowel Krzysztof , Cellmer Sławomir , Kwasniak Dawid
Published: September 2017

The Modified Ambiguity Function Approach – Integer Least Squares (MAFA-ILS) is one of the modern method for the precise real-time GNSS positioning, for many applications such as geodesy or surveying engineering. Contrary to the classic approach, in the MAFA-ILS method the solution is sought in the coordinate domain. However, to obtain a proper solution, the search region cannot be too small. On the other hand, to have an effective solution – in the computational load sense – this region cannot be too big. In this case the determination of the minimum size of appropriate search region is not a trivial task. The paper presents a certain solution of this problem.
Seasonal Baltic Sea level change from altimetry data
Authors: Pajak Katarzyna
Published: September 2017

Regional sea level changes occur at different time scales. Global warming of the oceans, glacial and polar ice melting and meteorological or hydrological factors are major contributors to long-term sea level rise. In the recent years, a lot of attention has been paid to research concerning sea level change and seasonal fluctuations. The main objective of this paper was to determine the seasonal variability in the Baltic Sea level using satellite altimetry data for the period 1 January 2010 – 31 December 2014. The ANOVA analysis of variance was used in the research in order to estimate seasonal fluctuations. This study focused on investigate the monthly and annual amplitude in sea level anomalies over a given time period. The results from research showed that the amplitudes of fluctuations are the highest in winter and the smallest in summer in three analyzed points of the Baltic Sea. The results can bring valuable information about ongoing aspects in sea level changes, as a way of tracking climate change.
High-rate GNSS Positioning for Precise Detection of Dynamic Displacements and Deformations: Methodology and Case Study Results
Authors: Paziewski Jacek , Sieradzki Rafal , Baryla Radoslaw
Published: September 2017

The monitoring of static and dynamic deformations of buildings and other engineering structures is of great interest for many scientific and practical reasons. Such measurements provide information required for safe maintenance of the constructions being a subject of various excitations. At present one of the most commonly used technology for this purpose is the high-rate GNSS positioning. The application of GNSS technology with appropriate processing methodology may meet the specific requirements which result in extraction of information on dynamic displacements and deformations of ground and engineering structures. The high temporal resolution and precision of GNSS phase observations predestine this technology to be applied to the most demanding applications in terms of accuracy, availability and reliability. In this study we present preliminary results of application of precise GNSS positioning for detection of small scale (centimeter level) dynamic displacements. In the first part of work there are described methodology and algorithms of precise coordinate estimation, involving both the relative positioning as well as the Precise Point Positioning technique. In the experiment both approaches were applied to monitor of antenna point variations on the basis of high-rate (20 Hz) observations processed in self-developed software. The dynamic displacements were simulated using specially constructed device moving GNSS antenna with dedicated amplitude and frequency. The obtained results indicate on possibility of detection of dynamic GNSS antenna displacements even at the level of millimetres using relative positioning. Moreover, the Precise Point Positioning approach has also proved its applicability to detect high-rate small scale changes of the controlled site coordinates.
The Use of Decomposition SVD to Approximate a Surface
Authors: Preweda Edward
Published: September 2017

This paper describes the procedure of determining the parameters of the approximating function of the surface using a distribution of special value. From a practical point of view, an important issue is to determine the covariance matrix of the estimated parameters. Interval estimation was carried out and a methodology to obtain an optimal equation of approximating surface was presented. The main emphasis was given to the elimination of these parameters functions that generate unnecessary disturbance. The results obtained using the approximate decomposition SVD were compared with those obtained by a classical method of least squares. They have been used a variety of software, including software written by author, also packages Matlab and Statistica. The main purpose of discussion is to solve sample tasks for better understanding and expand the use of decomposition SVD in geodetic issues.
Low-cost Photogrammetry for Culture Heritage
Authors: Shults Roman , Krelshtein Petro , Kravchenko Iulia , Rogoza Olga , Kyselov Oleksandr
Published: September 2017

Culture heritage will always remain one of the priorities of any state. Taking a cultural or historical object under protection is impossible without inventory. The best technology, which allows getting high-quality inventory, is close-range photogrammetry. Unfortunately, the full capabilities of this technology is fully owned by professionals only. The situation changed significantly with the advent of mobile devices that are equipped with digital cameras and low-cost software that does not require any special knowledge in the theory and practice of photogrammetry. These developments have been called lowcost photogrammetry technologies. In the present study, we examined the use of smartphones and nano UAV and PhotoScan software for solve the problem fortifications II World War inventory near the city of Kiev. For qualitative data, the calibration of digital cameras in smartphones and ultra-light UAV was performed on calibration bench. One of the features of this project was the integration of the terrestrial photos and photos captured by nano UAVs. As a result of work performed were obtained 3D models of fortifications. Results showed high efficiency of the low-cost photogrammetry technologies. At the end of work some practical guidelines were provided, how to get high-quality data using low-cost photogrammetry technologies.
Local Investments Site Selection and the Behavior of the Real Estate Market – Case Study in Poland
Authors: Siejka Monika
Published: September 2017

One of the main tasks of real estate management in the area of the municipality is making decisions concerning the location of investments on a local scale. These decisions should be taken with the principle of sustainable development. For such an action obliges Poland's membership in the European Union. Poland as a member of the EU is obliged to implement the rules in force in the Member States. Bearing in mind that any investment impact directly or indirectly on the economic development of the municipality, is therefore a significant impact on the local real estate market. Investments that have a negative impact on the environment can contribute to a reduction in the activity of the local real estate market. While performing tasks related to the economic development of the region and the increase in quality of life, increases the activity of the local real estate market. The work was carried out research on the dynamics of changes in the local real estate market in the area of the municipality Skrzyszow in the Malopolska province in Poland, in connection with the construction of the reservoir.
The Analysis of Modifications in Cooling
Systems for High-Performance Data Centers. A Case Study
Authors: Rusowicz Artur , Ruciński Adam , Laskowski Rafał
Published: September 2017

One of main issues concerning server room operation is appropriate cooling of electronic modules to prevent
excessive heat generation resulting in their damage. Since high cooling powers are required, precision air conditioning
systems are used that are specially designed for cooling server and equipment rooms, server cabinets, etc. These devices
require very large energy supplies.
The paper proposes an upgrade of a cooling system for three server rooms in which refrigeration equipment with a
cooling power of 1.873 MW is installed. The average actual cooling power demand is 890 kW, and some units work as
a standby. Thir-eight direct-evaporation air-conditioning cabinets are installed. The refrigerant is R407C. The devices
have been operated for 14 years; therefore, the refrigeration equipment should be replaced with modern units. The paper
compares three approaches: replacing the units with similar ones based on newer technology, introducing contained
aisle configurations of rack cabinets and units based on newer technology with additional EconoPhase modules. The
application of free cooling was not analyzed since mounting additional heat exchangers was impossible (due to the lack
of space and limited roof loading capacity). The paper provides capital and operating costs of the solutions.
The introduction of up-to-date units and replacing condensers resulted in lowering the electric power demand by 16%.
The simple payback time (SPBT) of this solution is 18.8 years. The energy savings achieved through the second solution
(contained aisle configurations of rack cabinets) amount to 37.8%, with SPBT equal to 8.38 years. Variant III, consisting
in using modern units with additional EconoPhase modules, significantly improves energy savings (48.3%) but it requires
large capital expenditure, with simple payback time of 12.1 years.
The Young Substellar Companion ROXs 12 B: Near-infrared Spectrum, System Architecture, and Spin–Orbit Misalignment*
Authors: Bowler Brendan P. , Kraus Adam L. , Bryan Marta L. , Knutson Heather A. , Brogi Matteo , Rizzuto Aaron C. , Mace Gregory N. , Vanderburg Andrew , Liu Michael C. , Hillenbrand Lynne A. , Cieza Lucas A.
Published: September 2017

ROXs 12 (2MASS J16262803–2526477) is a young star hosting a directly imaged companion near the deuterium-burning limit. We present a suite of spectroscopic, imaging, and time-series observations to characterize the physical and environmental properties of this system. Moderate-resolution near-infrared spectroscopy of ROXs 12 B from Gemini-North/NIFS and Keck/OSIRIS reveals signatures of low surface gravity including weak alkali absorption lines and a triangular H-band pseudocontinuum shape. No signs of Paβ emission are evident. As a population, however, we find that about half (46% ± 14%) of young (≲15 Myr) companions with masses ≲20 M
Jup possess actively accreting subdisks detected via Paβ line emission, which represents a lower limit on the prevalence of circumplanetary disks in general, as some are expected to be in a quiescent phase of accretion. The bolometric luminosity of the companion and age of the host star (

Myr) imply a mass of 17.5 ± 1.5 M
Jup for ROXs 12 B based on hot-start evolutionary models. We identify a wide (5100 au) tertiary companion to this system, 2MASS J16262774–2527247, that is heavily accreting and exhibits stochastic variability in its K2 light curve. By combining v sin i
* measurements with rotation periods from K2, we constrain the line-of-sight inclinations of ROXs 12 A and 2MASS J16262774–2527247 and find that they are misaligned by

. In addition, the orbital axis of ROXs 12 B is likely misaligned from the spin axis of its host star, ROXs 12 A, suggesting that ROXs 12 B formed akin to fragmenting binary stars or in an equatorial disk that was torqued by the wide stellar tertiary.
Optimization of Positioning of Interferometric Array Antennas Using Division Algorithm for Radio Astronomy Applications
Authors: Kiehbadroudinezhad Shahideh , Valente Daniela , Cada Michael , Noordin Nor Kamariah , Shahabi Adib
Published: September 2017

The Square Kilometre Array (SKA) ushers in the new generation of large radio telescopes that will work at wavelengths between meters and centimeters. In order to competitively design interferometric antenna arrays such as SKA, it is crucial to focus on the optimization of system performance. In this paper, we contribute to the solution by introducing a new optimization algorithm called Division Algorithm (DA). This algorithm finds the optimal positions of antennas to simultaneously maximize u–v coverage and decrease sidelobe level (SLL). The DA is able to optimize the configuration of the interferometric array in both snapshot and Earth rotation synthesis observations. To demonstrate its efficiency, the DA is applied to configure an optimum 30-element array for the Giant Metrewave Radio Telescope. The proposed algorithm is able to improve the overlapped samples parameter by about 4% and the unsampled cells parameter by about 12%, at snapshot observation, compared to the Genetic Algorithm (GA). DA is able to improve these two parameters for a 6-hr tracking observation as well. Finally, the proposed algorithm is compared with the GA for different source declination. Results show that the DA is able to decrease the SLL better than the GA.
Peering Through the Dust. II. XMM-Newton Observations of Two Additional FIRST-2MASS Red Quasars
Authors: Glikman Eilat , LaMassa Stephanie , Piconcelli Enrico , Urry Meg , Lacy Mark
Published: September 2017

We obtained XMM-Newton observations of two highly luminous dust-reddened quasars, F2M1113+1244 and F2M1656+3821, that appear to be in the early, transitional phase predicted by merger-driven models of quasar/galaxy co-evolution. These sources have been well studied at optical through mid-infrared wavelengths and are growing relatively rapidly, with Eddington ratios

. Their black hole masses are relatively small compared to their host galaxies, placing them below the

relation. We find that for both sources, an absorbed power-law model with 1%–3% of the intrinsic continuum scattered or leaked back into the line of sight best fits their X-ray spectra. We measure the absorbing column density (N

H
) and constrain the dust-to-gas ratios in these systems, finding that they lie well below the Galactic value. This, combined with the presence of broad emission lines in their optical and near-infrared spectra, suggests that the dust absorption occurs far from the nucleus and in the host galaxy, while the X-rays are mostly absorbed in the nuclear, dust-free region within the sublimation radius. We also compare the quasars’ absorption-corrected, rest-frame X-ray luminosities (2–10 keV) to their rest-frame infrared luminosities (6 μm) and find that red quasars, similar to other populations of luminous obscured quasars, are either underluminous in X-rays or overluminous in the infrared.
First Weak-lensing Results from “See Change”: Quantifying Dark Matter in the Two z ≳ 1.5 High-redshift Galaxy Clusters SPT-CL J2040–4451 and IDCS J1426+3508
Authors: Jee M. James , Ko Jongwan , Perlmutter Saul , Gonzalez Anthony , Brodwin Mark , Linder Eric , Eisenhardt Peter
Published: September 2017

We present a weak-lensing study of SPT-CL J2040–4451 and IDCS J1426+3508 at z = 1.48 and 1.75, respectively. The two clusters were observed in our “See Change” program, a Hubble Space Telescope survey of 12 massive high-redshift clusters aimed at high-z supernova measurements and weak-lensing estimation of accurate cluster masses. We detect weak but significant galaxy shape distortions using infrared images from the Wide Field Camera 3 (WFC3), which has not yet been used for weak-lensing studies. Both clusters appear to possess relaxed morphology in projected mass distribution, and their mass centroids agree nicely with those defined by both the galaxy luminosity and X-ray emission. Using a Navarro–Frenk–White profile, for which we assume that the mass is tightly correlated with the concentration parameter, we determine the masses of SPT-CL J2040–4451 and IDCS J1426 + 3508 to be

and

, respectively. The weak-lensing mass of SPT-CL J2040–4451 shows that the cluster is clearly a rare object. Adopting the central value, the expected abundance of such a massive cluster at

is only 

in the parent 2500 sq. deg. survey. However, it is yet premature to claim that the presence of this cluster creates a serious tension with the current ΛCDM paradigm unless that tension will remain in future studies after marginalizing over many sources of uncertainties such as the accuracy of the mass function and the mass–concentration relation at the high-mass end. The mass of IDCS J1426+3508 is in excellent agreement with our previous Advanced Camera for Surveys-based weak-lensing result, while the much higher source density from our WFC3 imaging data makes the current statistical uncertainty

% smaller.
Analytical Core Mass Function (CMF) from Filaments: Under Which Circumstances Can Filament Fragmentation Reproduce the CMF?
Authors: Lee Yueh-Ning , Hennebelle Patrick , Chabrier Gilles
Published: September 2017

Observations suggest that star formation in filamentary molecular clouds occurs in a two-step process, with the formation of filaments preceding that of prestellar cores and stars. Here, we apply the gravoturbulent fragmentation theory of Hennebelle & Chabrier to a filamentary environment, taking into account magnetic support. We discuss the induced geometrical effect on the cores, with a transition from 3D geometry at small scales to 1D at large ones. The model predicts the fragmentation behavior of a filament for a given mass per unit length (MpL) and level of magnetization. This core mass function (CMF) for individual filaments is then convolved with the distribution of filaments to obtain the final system CMF. The model yields two major results. (i) The filamentary geometry naturally induces a hierarchical fragmentation process, first into groups of cores, separated by a length equal to a few filament Jeans lengths, i.e., a few times the filament width. These groups then fragment into individual cores. (ii) Non-magnetized filaments with high MpL are found to fragment excessively, at odds with observations. This is resolved by taking into account the magnetic field (treated simply as additional pressure support). The present theory suggests two complementary modes of star formation: although small (spherical or filamentary) structures will collapse directly into prestellar cores, according to the standard Hennebelle–Chabrier theory, the large (filamentary) ones, the dominant population according to observations, will follow the aforedescribed two-step process.
Halo Nonlinear Reconstruction
Authors: Yu Yu , Zhu Hong-Ming , Pen Ue-Li
Published: September 2017

We apply the nonlinear reconstruction method to simulated halo fields. For halo number density

at z = 0, corresponding to the SDSS main sample density, we find that the scale where the noise saturates the linear signal is improved to

, which is a factor of 2.29 improvement in scale, or 12 in number of linear modes. The improvement is less for higher redshift or lower halo density. We expect this to substantially improve the BAO accuracy of dense, low-redshift surveys, including the SDSS main sample, 6dFGS and 21 cm intensity mapping initiatives.
Dispersive Evolution of Nonlinear Fast Magnetoacoustic Wave Trains
Authors: Pascoe D. J. , Goddard C. R. , Nakariakov V. M.
Published: September 2017

Quasi-periodic rapidly propagating wave trains are frequently observed in extreme ultraviolet observations of the solar corona, or are inferred by the quasi-periodic modulation of radio emission. The dispersive nature of fast magnetohydrodynamic waves in coronal structures provides a robust mechanism to explain the detected quasi-periodic patterns. We perform 2D numerical simulations of impulsively generated wave trains in coronal plasma slabs and investigate how the behavior of the trapped and leaky components depend on the properties of the initial perturbation. For large amplitude compressive perturbations, the geometrical dispersion associated with the waveguide suppresses the nonlinear steepening for the trapped wave train. The wave train formed by the leaky components does not experience dispersion once it leaves the waveguide and so can steepen and form shocks. The mechanism we consider can lead to the formation of multiple shock fronts by a single, large amplitude, impulsive event and so can account for quasi-periodic features observed in radio spectra.
Quand l’humanitaire est payant
Authors: Delpierre Alizée
Published: September 2017

Depuis le milieu et la fin des années 1990 se développent en Amérique du Nord et en Grande Bretagne un type d’entreprise de séjours de volontariat dit « humanitaire ». Ces entreprises visent une clientèle particulièrement jeune et aisée, désireuse de « faire de l’humanitaire », mais qui n’a pas forcément les compétences requises pour travailler dans une ONG. Si les « touristes humanitaires » attendent beaucoup de cette expérience, ils sont souvent déçus de ne pas faire ce qu’ils estiment être du « vrai » humanitaire ; la visée humanitaire se perd progressivement tout au long du voyage, les volontaires s’adonnant à des loisirs touristiques plus communs. Cependant, ils auront bénéficié du label humanitaire, valorisable à leur retour sur le marché scolaire et professionnel, mais également sur le plan identitaire. L’humanitaire monétairement payant (au sens de « coûteux ») se mue ainsi en humanitaire sociologiquement payant (au sens de ce qu’il rapporte).
Négocier les frontières
Authors: Lee Hyunok
Published: September 2017

L’article explore la façon dont la migration des femmes recoupe le travail rémunéré ou non-rémunéré des femmes, ce qui ne peut être séparé de l’organisation de la force de travail et du travail reproductif au sein d’institutions sociales comme le marché du travail ou la famille. La question se pose d’autant plus que des types de migration différents, en termes d’échelle et de but poursuivi, interviennent dans le parcours de vie des femmes migrantes : il peut ainsi s’agir initialement d’une migration rurale-urbaine, puis d’une migration internationale liée d’abord au mariage puis au travail. En examinant, sur la base de deux recherches de terrain menées en 2007-2008 et 2011-2012, le parcours de vie de migrantes vietnamiennes mariées en Corée du Sud, l’article montre la manière dont ces choix migratoires sont liés au contexte du développement économique national du Vietnam, des changements socio-démographiques post-industriels en Corée du Sud et des inquiétudes grandissantes sur la reproduction sociale dans les pays d’Asie de l’Est. Ce travail contribue ainsi aux débats sur la relation entre développement, reproduction sociale et migration genrée.
Quantifier en ethnographe
Authors: Gros Julien
Published: September 2017

L’article souhaite fournir des outils théoriques et pratiques permettant à l’ethnographe qui quantifie d’affermir sa posture dans un environnement de plus en plus multi-méthodes, en exposant les difficultés et les enjeux qu’il y a à s’émanciper des outils élémentaires de la statistique inférentielle lorsqu’elle est appliquée à des populations construites comme des cas ethnographiques. En effet, alors que l’ethnographie prétend élaborer un discours sur le monde social à partir d’études de cas, les techniques quantitatives sont spontanément associées aux enquêtes sur échantillon qui assoient leur montée en généralité sur l’inférence statistique. À partir d’un exemple empirique, on montre ce qu’implique de soumettre un cas ethnographique à l’analyse quantitative, puis on détaille en quoi la statistique inférentielle et les tests de significativité s’opposent et nuisent au raisonnement par cas, pour finalement conseiller d’adopter une posture descriptive face aux statistiques.
La reutilización hotelera del patrimonio monástico gallego
Authors: Lorenzo Aspres Alberta
Published: September 2017

La recuperación de monumentos mediante la asignación de nuevos usos distintos a los originales es una práctica cada vez más frecuente en la gestión del patrimonio arquitectónico. También es cada vez mayor el número de establecimientos hoteleros localizados en edificios de gran valor histórico y/o artístico. El origen de esta actividad se remonta a principios del siglo XX con el nacimiento de una conciencia sobre la importancia que poseía el patrimonio para la floreciente industria turística. La creación estatal de una red variada de alojamientos dio lugar a un tipo de hotel que se instalaría en edificaciones ruinosas que una vez rehabilitadas recuperarían su utilidad, logrando así armonizar la salvaguarda del patrimonio monumental español con el impulso del turismo. Esta práctica se extendió rápidamente por todo el país, y también por Galicia. Este trabajo viene a completar una parte importante del estudio sobre el impacto del turismo y la gestión cultural en la conservación del patrimonio histórico-artístico gallego: mediante el análisis de cinco monumentos religiosos rehabilitados como establecimientos hoteleros comprobaremos cómo el abandono del inmueble supone el inicio de su inevitable ruina, demostrándose que la opción de un nuevo uso se presenta como la mejor garantía para su supervivencia, entendiendo este acto desde la capacidad del monumento de estar vivo y de participar en la sociedad del momento.

[gl] A recuperación de monumentos mediante a asignación de novos usos distintos aos orixinais é unha práctica cada vez máis frecuente na xestión do patrimonio arquitectónico. Tamén é cada vez maior o número de establecementos hoteleiros localizados en edificios de gran valor histórico e/ou artístico. A orixe desta actividade remóntase a principios do século XX co nacemento dunha conciencia sobre a importancia que posuía o patrimonio para a florecente industria turística. A creación estatal dunha rede variada de aloxamentos deu lugar a un tipo de hotel que se instalaría en edificacións ruinosas que unha vez rehabilitadas recuperarían a súa utilidade, logrando así harmonizar a salvagarda do patrimonio monumental español co pulo do turismo. Esta práctica estendeuse rapidamente por todo o país, e tamén por Galicia. Este traballo ven completar unha parte importante do estudo sobre o impacto do turismo e a xestión cultural na conservación do patrimonio histórico-artístico galego: mediante a análise de cinco monumentos relixiosos rehabilitados como establecementos hostaleiros comprobaremos como o abandono do inmoble supón o inicio da súa inevitable ruína, demostrándose que a opción dun novo uso preséntase como a mellor garantía para a súa supervivencia, entendendo este acto desde a capacidade do monumento de estar vivo e de participar na sociedade do momento.
Modelo de gestión para un control de calidad eficiente en edificios de nueva planta
Authors: Rodríguez-Jiménez C. E. , Macías-Bernal J. M. , Lucas-Ruiz R.
Published: September 2017

La gestión del control de calidad en cada proceso edificatorio se plantea habitualmente en España desde distintos niveles de exigencia. El presente trabajo tiene por objeto obtener un modelo de referencia para comparar el control del proceso edificatorio realizado sobre un producto concreto (edificio) y poder evaluar su nivel de garantía. Para ello recurrimos a fuentes especializadas así como al estudio de 153 casos reales de expedientes de control de calidad utilizando una metodología del tipo multicriterio. Se aplican técnicas conducentes a una valoración concreta (objetiva) de los parámetros de entrada mediante el método Delphi (consulta a 17 expertos), cuyo tratamiento matricial con la herramienta Fuzzy-QFD condensa referencias numéricas a través de un reparto de pesos entre las funciones seleccionadas y sus correspondientes factores intervinientes. El modelo así obtenido (M153) es útil como referente óptimo de las actuaciones de control que conllevan el cumplimiento de las expectativas de calidad.
Determinación de la resistencia a esfuerzo cortante en ensayos de flexión a paneles sándwich PUR: análisis de las dificultades y simulación por elementos finitos
Authors: Chillón Moreno J. M. , Sánchez Montero J. , Pecharromán Sacristán J.
Published: September 2017

La utilización de elementos constructivos compuestos, combinando distintos materiales con características complementarias, se ha extendido cada vez más. Los paneles sándwich, compuestos por capas externas de metal que les aporta resistencia y núcleo de espuma aislante térmica, que proporciona cualidades que mejoran el confort térmico en el interior de todo tipo de construcciones, se utilizan en cerramientos y cubiertas que conforman la envolvente de los edificios. De los distintos controles de calidad a que se han de someter, en este artículo se propone una mejora al indicado en las normas para la determinación de la resistencia al esfuerzo cortante, consiguiendo evitar muchos resultados anómalos obtenidos por la utilización de placas rígidas en los apoyos. Finalmente, tanto el problema observado como la solución propuesta, se modelizan y simulan mediante el método de elementos finitos.
Ensino da aritmética na escola de primeiras letras no século XIX: as memórias de Humberto de Campos
Authors: Gomes Maria Laura Magalhães
Published: September 2017

Este artigo focaliza a narrativa de Humberto de Campos em seu primeiro volume de memórias (1886-1900) no que se refere à educação escolar do autor. Inicialmente, enfatiza-se a importância da escrita autobiográfica para a pesquisa em História da Educação, e especialmente para a história da educação matemática. Em seguida, apresenta-se o autor, situando-o no cenário da literatura brasileira, e discorre-se sobre os fundamentos teórico-metodológicos adotados na pesquisa com fontes memorialísticas. O núcleo do texto é composto pela abordagem das principais experiências escolares narradas por Humberto de Campos na cidade de Parnaíba, no interior do Piauí, na década de 1890, com destaque para práticas que envolvem conhecimentos matemáticos. As lembranças escolares registradas na obra do escritor maranhense ressaltam a precariedade material da instrução elementar, o ensino de muitos alunos de diferentes níveis em escolas de um só professor e os métodos de ensino, baseados na repetição e memorização e apoiados em práticas punitivas de castigos e humilhações dos estudantes.
Produção de textos e processo inicial de alfabetização
Authors: Costa Dania Monteiro Vieira , Gontijo Cláudia Maria Mendes
Published: September 2017

Este artigo objetiva analisar processos de produção de textos no início do ensino fundamental de nove anos com ênfase nos posicionamentos das crianças diante das propostas e dos destinatários escolhidos para seus textos. Reflete sobre as possibilidades de as crianças produzirem textos no início da alfabetização. Constitui-se em uma pesquisa qualitativa com enfoque sócio-histórico e utiliza, como técnica de produção de dados, proposições de produção de textos. Conclui que as crianças constroem seu discurso a partir dos seus interlocutores, anunciando a necessidade de a produção de textos se tornar elemento essencial do processo de ensino aprendizagem da leitura e da escrita na fase inicial de alfabetização.
Referees
Authors: Education Acta Scientiarum.
Published: September 2017

Referees for Volume 39, n. 4 of the Acta Scientiarium. Education, 2017
Quantification of fatty acids in salmon fillets conserved by different methods
Authors: Gonçalves Renata Menoci , Montanher Paula Fernandes , Carbonera Fabiana , Petenuci Maria Eugênia , Silveira Roberta Da , Visentainer Jesuí Vergílio
Published: September 2017

Lipid contents and the composition of fatty acids of fillets from Chilean salmon (Salmo salar) were determined under different conservation methods: fresh salmon, frozen salmon, water-conserved canned salmon and frozen salmon in long-term storage. Fatty acid contents were determined by gas chromatography. The fillets had high lipid levels, ranging between 9.71 and 12.86%. All samples presented high levels of monounsaturated fatty acids, between 363.69 and 425.30 mg g-1 of total lipids, followed by polyunsaturated fatty acids (294.46 - 342.45 mg g-1 of total lipids) and saturated fatty acids (203.32 - 223.17 mg g-1 of total lipids). Although samples revealed different lipid contents, all proved to be great sources of omega-3 fatty acids, regardless of the manner of conservation.
Green Tea Polyphenol EGCG Upregulates Tollip Expression by Suppressing Elf-1 Expression
Authors: Kumazoe Motofumi , Yamashita Mai , Nakamura Yuki , Takamatsu Kanako , Bae Jaehoon , Yamashita Shuya , Yamada Shuhei , Onda Hiroaki , Nojiri Takashi , Kangawa Kenji , Tachibana Hirofumi
Published: September 2017

TLR signaling is critical to innate immune system regulation; however, aberrant TLR signaling is involved in several diseases, including insulin resistance, Alzheimer’s disease, and tumor metastasis. Moreover, a recent study found that TLR-4 signaling pathway inhibition might be a target for the suppression of chronic inflammatory disorders. In this article, we show that the green tea polyphenol epigallocatechin-3-O-gallate (EGCG) increases the expression of Toll interacting protein, a strong inhibitor of TLR4 signaling, by suppressing the expression of E74-like ETS transcription factor 1 (Elf-1). A mechanistic study revealed that EGCG suppressed Elf-1 expression via protein phosphatase 2A/cyclic GMP (cGMP)-dependent mechanisms. We also confirmed that orally administered EGCG and a cGMP inducer upregulated Toll interacting protein expression, increased intracellular levels of cGMP in macrophages, and suppressed Elf-1 expression. These data support EGCG and a cGMP inducer as potential candidate suppressors of TLR4 signaling.
Type III IFNs Are Commonly Induced by Bacteria-Sensing TLRs and Reinforce Epithelial Barriers during Infection
Authors: Odendall Charlotte , Voak Andrew A. , Kagan Jonathan C.
Published: September 2017

Type III IFNs (IFN-λs) are secreted factors that are well-known for their antiviral activities. However, their regulation and functions during bacterial infections are unclear. In this article, we report that the regulation of IFN-λ genes did not track with mechanisms that control type I IFN expression in response to TLRs. Whereas type I IFNs were only expressed from TLRs present on endosomes, type III IFNs could be induced by TLRs that reside at the plasma membrane and that detect various bacterial products. The mechanisms that regulate type III IFN gene expression tracked with those that promote inflammatory cytokine and chemokine expression. Importantly, rIFN-λs enhanced epithelial barriers in vitro, preventing transcellular bacteria dissemination. We therefore propose that in addition to their functions in cell-intrinsic antiviral immunity, type III IFNs protect epithelial barrier integrity, an activity that would benefit the host during any infectious encounter.
CD151 Expression Is Associated with a Hyperproliferative T Cell Phenotype
Authors: Seu Lillian , Tidwell Christopher , Timares Laura , Duverger Alexandra , Wagner Frederic H. , Goepfert Paul A. , Westfall Andrew O. , Sabbaj Steffanie , Kutsch Olaf
Published: September 2017

The tetraspanin CD151 is a marker of aggressive cell proliferation and invasiveness for a variety of cancer types. Given reports of CD151 expression on T cells, we explored whether CD151 would mark T cells in a hyperactivated state. Consistent with the idea that CD151 could mark a phenotypically distinct T cell subset, it was not uniformly expressed on T cells. CD151 expression frequency was a function of the T cell lineage (CD8 > CD4) and a function of the memory differentiation state (naive T cells < central memory T cells < effector memory T cells < T effector memory RA+ cells). CD151 and CD57, a senescence marker, defined the same CD28− T cell populations. However, CD151 also marked a substantial CD28+ T cell population that was not marked by CD57. Kinome array analysis demonstrated that CD28+CD151+ T cells form a subpopulation with a distinct molecular baseline and activation phenotype. Network analysis of these data revealed that cell cycle control and cell death were the most altered process motifs in CD28+CD151+ T cells. We demonstrate that CD151 in T cells is not a passive marker, but actively changed the cell cycle control and cell death process motifs of T cells. Consistent with these data, long-term T cell culture experiments in the presence of only IL-2 demonstrated that independent of their CD28 expression status, CD151+ T cells, but not CD151− T cells, would exhibit an Ag-independent, hyperresponsive proliferation phenotype. Not unlike its reported function as a tumor aggressiveness marker, CD151 in humans thus marks and enables hyperproliferative T cells.
From the Padua Muscle Days, the Basic and Applied Myology and the European Journal of Translational Myology to the A&CM Carraro Foundation for Translational Myology
Authors: Carraro Ugo
Published: September 2017

As a young researched I had the option to work on skeletal muscle at the University of Padova, Italy. Introduced to the study of muscle denervation/reinnervation, I started a project on long term denervated muscle that still is my primary interest and took me from rodents’ models of chronic muscle denervation to human spinal cord injury-related muscle denervation and its managements. On the way, I organized a series of conferences in Euganei Hills, Padua, Italy and an international journal, the Basic and Applied Myology. From 2010 this journal changed name to European Journal of Translational Myology, whose contents are focused on Myology, though they have important implications in aging, several neurological disorders and cancer cachexia. A relatively large community of Basic Biologists, Clinicians and Biomedical Technologists (usually meeting separately in very different specialty Conferences) recognized the need of a Meeting Series focused on Translational Myology. Thus the Padua Muscle Days (PMD) started more than 25 years ago. The next events of the PMD Series will be in Autumn 2017 an one-day Seminar on Easy Aging and a three-day event: The 2017 Fall Padua Experts’ Meeting. During the 2018Spring PMD, the Giovanni Salviati Memorial will be organized to honor a beloved friend and excellent scientist, who abruptly disappeared twenty years ago at the peak of his research activities. Many friends and still-active pupils accepted invitation and will provide the backbone of the Program of the 2018Spring PaduaMuscleDay to be held, March 14-16, 2018 in Euganei Hills and Padua (Italy). All these events will be sponsored by the Interdepartmental Research Centre of Myology of the University of Padova and by the A&CM Carraro Foundation for Translational Myology.
Multidimensional and nutritional evaluation in post-acute long-term care setting
Authors: Uneddu Antonio , Sotgia Mauro , Spissu Valentina , Manzocco Marta , Filippi Alessandra
Published: September 2017

Since 2011 the Unit of Post Acute Long-Term Care started the activity in Sassari, Sardinia region, initially as Local Health Care Public Service and currently integrated in the University Hospital. The purpose of this paper was to describe the main care methods based on a comprehensive geriatric approach and the multidimensional prognostic index to stratify the risk of mortality and other negative outcomes. With a strong emphasis on nutritional problems, we analyzed the correlations among malnutrition and motility, cognitive impairment, comorbidity and major diseases, and psychosocial determinants.
Effectiveness and tolerability of tapentadol in very elderly patients with assessment of cognitive-behavioral aspects
Authors: Nunziata Eleonora , De Siati Francesco , Palleschi Lorenzo
Published: September 2017

Pain is a common complaint of the elderly and the prevalence of persistent discomfort increases with aging. Suffering may be underreported as some elderly patients incorrectly believe that pain is a normal process of aging. The aim of this study is to assess the analgesic effectiveness and tolerability of tapentadol in elderly patients with assessment of cognitivebehavioral aspects. During treatment with tapentadol, elderly patients experienced reduced pain intensity and improved physical and mental health.
Gluteal Artery Injuries Including Pseudoaneurysm Associated with Powered Bone Marrow Biopsies
Authors: Singh Aditi , Pendurti Gopichand , Singh Shashi , Shestopalov Alexander , Pacello Thomas , Reed Louis
Published: September 2017

The bone marrow procedure (BMP) is a frequently performed procedure, with over 700,000 recorded in the U.S. annually. It is a fundamental component in the evaluation and management of both malignant and benign hematologic conditions. Adult patients are generally assured that the BMP is a safe procedure with minimal risk, albeit briefly painful. Traditionally performed using a manual Jamshidi needle, the procedure is increasingly being performed using powered bone marrow kits, which have shown consistently good results. In the current review we describe three cases of gluteal artery injuries following the powered driver procedure, one of which resulted in the formation of a pseudoaneurysm requiring radiology-guided intervention. We highlight the need for both hematologists and patients to be aware of this potentially life threatening complication as well as how to recognize it clinically and institute timely diagnostic and therapeutic measures.
The unbearable heaviness of reductionism: the paradigm of the antiatherogenic diet
Authors: Bobbio Marco , Bonaldi Antonio , Lusiani Luigi , Kidd Emma
Published: September 2017

Reducing a complex phenomenon into a simplified description may help us to understand general issues and to make limited decisions, but can hardly allow us to accurately predict the consequences of an intervention. The case of the antiatherogenic diet is discussed. Simplified approaches, aimed at correcting single components of a diet, privileging the lipid theory over more comprehensive ones, sustained by the illusion that removing one single substance (the lowering-cholesterol mantra) would defeat cardiovascular disease, have led us to faulty results, because the interactions among components and their interconnections are not negligible. The industry’s interest in shifting the diet of millions of people in well-defined and profitable directions (lowfat, but sugar-rich for tastefulness reasons, as an example), in advance of well founded scientific evidence about benefit, has been mostly relevant. Nowadays, it is well recognized that refined and sweetened foods, not fats, are the main cause of obesity and diabetes, and that the cardiovascular risk is more dependent on the quantity of food consumed rather than the type of food. In recent years the attention of the researchers has moved from qualitative dietary studies and unnatural regimes, to quantitative diets and more naturally balanced regimes, within the concept of globally health life styles, against any reductionism.
Le malattie infiammatorie immuno-mediate (IMID) di interesse internistico: fisiopatologia, aspetti clinici e prospettive di terapia
Authors: Fontanella A. , Nardi R. , Masina M. , Uomo G.
Published: September 2017

Le IMID: inquadramento introduttivo
A. Fontanella, G. Uomo

Infiammazione e IMID
T. d’Errico, M. Laccetti

Malattia IgG4-relata
C. Mastrobuoni, G. Uomo

IMID in ematologia
F. Rezzonico, A. Mazzone

IMID in reumatologia
A. Parisi, R. Buono, R. Russo, G. Uomo

IMIDs in neurologia
G.T. Maniscalco, C. Florio

IMID in diabetologia
R. Nicosia, C. Ricordi

IMIDs in endocrinologia
M.R. Poggiano, V. Nuzzo

Malattie infiammatorie intestinali
M. Salice, L. Calandrini, C. Praticò, M. Mazza, A. Calafiore, G. Carini, C. Calabrese, A. Belluzzi, F. Rizzello, P. Gionchetti, M. Campieri

La malattia celiaca nel terzo millennio: nuove prospettive su patogenesi, clinica, diagnosi e terapia
G. Caio, F. Giancola, R. De Giorgio, U. Volta

Malattie epato-biliari autoimmuni
M. Visconti, L. Fontanella, G. Marino Marsilia

Pancreatiti autoimmuni
P.G. Rabitti, R. Boni

IMID e tumori
F. Gallucci

La sindrome infiammatoria da ricostruzione immune
I. Ronga, G. Uomo

Le malattie autoinfiammatorie
M. Gattorno, A. Brucato

Il rischio cardio-vascolare nelle IMIDs
A. Fontanella, P. Gnerre, R. Nardi

Quale ruolo degli inibitori delle PCSK9 in Medicina Interna nella prevenzione cardio-vascolare in alternativa alle terapie tradizionali?
P. Gnerre, P. Zuccheri, M. Campanini, G. Pinna, R. Nardi

Trombo-embolismo venoso e malattie autoimmuni sistemiche
A. Fontanella, P. Gnerre, R. Nardi

IMID nell’anziano: cenni sul trattamento
M. Masina

Farmaci biosimilari e farmaci innovativi in reumatologia: quale futuro?
M. Todoerti, C. Montecucco
Prevalence of squamous cell carcinoma of the esophagus in a single tertiary center of South Africa: a cross sectional analytic study
Authors: Kgomo Mpho , Elnagar Ali A. , Nagel Jaco , Mokoena Taole
Published: September 2017

The incidence of esophageal cancer varies widely in the world. In the Middle East, Africa, and Asia and parts of Europe, squamous cell carcinoma of the esophagus dominates the esophageal cancer landscape. Worldwide the rates are highest in Northern China, South Africa, Turkey and Iran. In the United States, the black population has a five-fold higher incidence of esophageal squamous cell carcinoma than the white population. To determine the prevalence of squamous cell carcinoma of the esophagus in a single tertiary center in South Africa. Patients referred to Gastroenterology Division of Steve Biko Academic Hospital for upper gastrointestinal endoscopy were recruited. Those with a known diagnoses of squamous cell carcinoma of the esophagus were recorded and those with suspicious lesions had biopsies done. These were then evaluated by an experienced histopathologist. 6118 patients were recruited. Squamous cell carcinoma was found in 59 patients giving us a prevalence of 0.96% 95%CI. The cancer was found mainly in back elderly males. The prevalence of squamous cell carcinoma of the esophagus in this single center study is 0.96%, 95% confidence interval and is a disease of black elderly males as seen elsewhere. Bigger multicenter studies are needed to further clarify this findings.
The use of facilities for labor and delivery: the views of women in rural Uganda
Authors: Newell Rebecca , Spillman Ian , Newell Marie-Louise
Published: September 2017

The aim of the paper is to explore factors associated with home or hospital delivery in rural Uganda. Qualitative interviews with recently-delivered women in rural Uganda and statistical analysis of data from the 2011 Ugandan Demographic and Health Survey (DHS) to assess the association between socio-demographic and cultural factors and delivery location in multivariable regression models. In the DHS, 61.7% (of 4907) women had a facility-based delivery (FBD); in adjusted analyses, FBD was associated with an urban setting [adjusted odds ratio (aOR) 3.38, 95% confidence interval (CI) 2.66 to 4.28)], the upper wealth quintile (aOR: 3.69, 95%CI 2.79 to 3.87) and with secondary education (aOR: 3.07, 95%CI 2.37 to 3.96). In interviews women quoted costs and distance as barriers to FBD. Other factors reported in interviews to be associated with FBD included family influence, perceived necessity of care (weak women needed FBD), and the reputation of the facility (women bypassed local facilities to deliver at better hospitals). Choosing a FBD is a complex decision and education around the benefits of FBD should be combined with interventions designed to remove barriers to FBD.