bluuebunny/crossref_metadata_2025 huggingface dataset:
The correlation between myocardial perfusion scintigraphy and three-dimensional echocardiography in ejection fraction and cardiac volumes for determination of the nearest filtering parameters
Authors: Mardanshahi Ali Reza , Alavi Abas , Yazdani Jamshid , Hosseinimehr Seyed Jalal , Khoshakhlagh Mohammad , Dabirian Mozhdeh , Abedi Seyed Mahammad
Published: December 2019

End-diastolic volume (EDV), end-systolic volume (ESV), and ejection fraction (EF) are cardiac volumes that have crucial roles in diagnosis of cardiovascular diseases (CVD) in patients. There are differences between these mentioned parameters in echocardiography (Echo) and myocardial perfusion scintigraphy (MPS) in clinical practice. In this study, we determined the nearest filtering parameters in the analysis of MPS data in comparison with three-dimensional echocardiography (3DE). All of patients were in this study, and 3DE and MPS were performed for all patients at rest phase in the same day. MPS images were analyzed through quantitative gated single photon emission computer tomography (SPECT) software with Butterworth filter which was a fixed order (order = 5) and variable cutoffs (COs) of 0.3, 0.35, 0.4, 0.45, and 0.5. The EDV, ESV, and EF values were measured by 3DE and MPS and compared. Based on the above different COs, the ESVs of MPS were 15.5 ± 18 mL, 18 ± 20 mL, 21 ± 22.5 mL, 22 ± 23 mL, and 22.5 ± 23.5 mL, respectively, while ESV of 3DE was 44.4 ± 23.5 mL. It was observed as a significant difference between MPS and 3DE for ESV. The EDVs of MPS were 61.3 ± 24.5 ml, 64 ± 26.5 ml, 68 ± 29.5 ml, 72 ± 31 ml, and 76 ± 32.2 ml, respectively, while EDV of 3DE was 105 ± 30 ml, which was significantly different between two methods. The EFs of MPS were 79% ± 14%, 76% ± 13%, 73.5% ± 12%, 73.5% ± 11%, and 74% ± 11%, respectively. The EF of 3DE was 58.4% ± 10% ml. It was statistically significant difference in values of EF between SPECT analysis parameters and 3DE. It was interesting when the COs increased from 0.3 to 0.5; the cardiac volumes increased while the EF decreased. The measured ESV and EDV values were lower in females than males while the EFs of females were higher than males. Finally, we demonstrate that the nearest Cos for measuring of EF and cardiac volumes for analysis of MPS data in comparison with 3DE are 0.45 and 0.5, respectively.
Advanced modalities of molecular imaging in precision medicine for musculoskeletal malignancies
Authors: Jokar Narges , Velez Erik , Shooli Hossein , Dadgar Habibollah , Sadathosseini Seyed Abbas , Assadi Majid , Gholamrezanezhad Ali
Published: December 2019

Musculoskeletal malignancies consist of a heterogenous group of mesenchymal tumors, often with high inter- and intratumoral heterogeneity. The early and accurate diagnosis of these malignancies can have a substantial impact on optimal treatment and quality of life for these patients. Several new applications and techniques have emerged in molecular imaging, including advances in multimodality imaging, the development of novel radiotracers, and advances in image analysis with radiomics and artificial intelligence. This review highlights the recent advances in molecular imaging modalities and the role of non-invasive imaging in evaluating tumor biology in the era of precision medicine.
Aut-invariant norms and Aut-invariant quasimorphisms on free and surface groups
Authors: Brandenbursky Michael , Marcinkowski Michał
Published: December 2019

Let

\mathbf{F}_n

be the free group on

n

generators and

\boldsymbol{\Gamma}_g

the surface group of genus

g

. We consider two particular generating sets: the set of all primitive elements in

\mathbf{F}_n

and the set of all simple loops in

\boldsymbol{\Gamma}_g

. We give a complete characterization of distorted and undistorted elements in the corresponding Aut-invariant word metrics. In particular, we reprove Stallings theorem and answer a question of Danny Calegari about the growth of simple loops. In addition, we construct infinitely many quasimorphisms on

\mathbf{F}_2

that are Aut

(\mathbf{F}_2)

-invariant. This answers an open problem posed by Miklós Abért.
Spectral and Hodge theory of “Witt” incomplete cusp edge spaces
Authors: Gell-Redman Jesse , Swoboda Jan
Published: December 2019

Incomplete cusp edges model the behavior of the Weil–Petersson metric on the compactified Riemann moduli space near the interior of a divisor. Assuming such a space is Witt, we construct a fundamental solution to the heat equation, and using a precise description of its asymptotic behavior at the singular set, we prove that the Hodge–Laplacian on differential forms is essentially self-adjoint, with discrete spectrum satisfying Weyl asymptotics. We go on to prove bounds on the growth of

L^2

-harmonic forms at the singular set and to prove a Hodge theorem, namely that the space of

L^2

-harmonic forms is naturally isomorphic to the middle-perversity intersection cohomology. Moreover, we develop an asymptotic expansion for the heat trace near

t = 0

.
A lower bound for the void coalescence load in nonlinearly elastic solids
Authors: Cañulef-Aguilar Victor , Henao Duvan
Published: December 2019

The problem of the sudden growth and coalescence of voids in elastic media is considered. The Dirichlet energy is minimized among incompressible and invertible Sobolev deformations of a two-dimensional domain having

n

microvoids of radius

\varepsilon

. The constraint is added that the cavities should reach at least certain minimum areas

\upsilon_1, \ldots, \upsilon_n

after the deformation takes place. They can be thought of as the current areas of the cavities during a quasistatic loading, the variational problem being the way to determine the state to be attained by the elastic body in a subsequent time step. It is proved that if each

\upsilon_i

is smaller than the area of a disk having a certain well defined radius, which is comparable to the distance, in the reference configuration, to either the boundary of the domain or the nearest cavity (whichever is closer), then there exists a range of external loads for which the cavities opened in the body are circular in the

\varepsilon\to 0

limit. In light of the results by Sivalonagathan & Spector and Henao & Serfaty that cavities always prefer to have a circular shape (unless prevented to do so by the constraint of incompressibility), our theorem suggests that the elongation and coalescence of the cavities experimentally and numerically observed for large loads can only take place after all the cavities have attained a volume comparable to the space they have available in the reference configuration. Based on the previous work of Henao & Serfaty, who apply the Ginzburg–Landau theory for superconductivity to the cavitation problem, this paper shows how the study of the interaction of the cavities is connected to the following more basic question: for what cavitation sites

a_1,\ldots, a_n

and areas

v_1, \ldots, v_n

does there exist an incompressible and invertible deformation producing cavities of those areas originating from those points. In order to use the incompressible flow of Dacorogna & Moser to answer that question, it is necessary to study first how do the elliptic regularity estimates for the Neumann problem in domains with circular holes depend on the domain geometry.
A tractable mathematical model for tissue growth
Authors: Eyles Joe , King John R. , Styles Vanessa
Published: December 2019

Using formal asymptotic methods we derive a free boundary problem representing one of the simplest mathematical descriptions of the growth and death of a tumour or other biological tissue. The mathematical model takes the form of a closed interface evolving via forced mean curvature flow (together with a ‘kinetic under-cooling’ regularisation) where the forcing depends on the solution of a PDE that holds in the domain enclosed by the interface. We perform linear stability analysis and derive a diffuse-interface approximation of the model. Finite-element discretisations of two closely related models are presented, together with computational results comparing the approximate solutions.
A nonlocal diffusion problem with a sharp free boundary
Authors: Cortázar Carmen , Quirós Fernando , Wolanski Noemi
Published: December 2019

We introduce and analyze a nonlocal free boundary problem which may be of interest to describe the spreading of populations in hostile environments. The rate of growth of the volume of the region occupied by the population is proportional to the rate at which the total population decreases. We prove existence and uniqueness for the problem posed on the line, on the half-line with constant Dirichlet data, and in the radial case in several dimensions.We also describe the asymptotic behaviour of both the solution and its free boundary.
Atmospheric teleconnection processes linking winter air stagnation and haze extremes in China with regional Arctic sea ice decline
Authors: Zou Yufei , Wang Yuhang , Xie Zuowei , Wang Hailong , Rasch Philip J.
Published: December 2019

Abstract. Recent studies suggested significant impacts of boreal cryosphere changes on wintertime air stagnation and haze pollution extremes in China. However, the underlying mechanism of such a teleconnection relationship remains unclear. Here we used the Whole Atmosphere Community Climate Model (WACCM) to investigate dynamic processes leading to atmospheric circulation and air stagnation responses to Arctic sea ice changes. We conducted four climate sensitivity experiments by perturbing sea ice concentrations (SIC) and corresponding sea surface temperature (SST) in autumn and early winter over the whole Arctic and three sub-regions in the climate model. The results indicate different responses in the general circulation and regional ventilation to the region-specific Arctic changes, with the largest increase of both the probability (by 120 %) and the intensity (by 32 %) of air stagnation extreme events being found in the experiment driven by SIC and SST changes over the Pacific sector of the Arctic (the East Siberian and Chukchi Seas). The increased air stagnation extreme events are mainly driven by an amplified hemispheric-scale atmospheric teleconnection pattern that resembles the negative phase of the Eurasian (EU) pattern. Dynamical diagnostics suggest that convergence of transient eddy forcing in the vicinity of Scandinavia in winter is largely responsible for the amplification of the teleconnection pattern. Transient eddy vorticity fluxes dominate the transient eddy forcing and produce a barotropic anticyclonic anomaly near Scandinavia and wave-train propagation across Eurasia to the downstream regions in East Asia. The piecewise potential vorticity inversion analysis reveals that this long-range atmospheric teleconnection of the Arctic origin takes place primarily in the middle and upper troposphere. The anomalous ridge over East Asia in the middle and upper troposphere worsens regional ventilation conditions by weakening monsoon northwesterlies and enhancing temperature inversion near the surface, leading to more and stronger air stagnation and pollution extremes over eastern China in winter. Ensemble projections based on the state-of-the-art climate models in the Coupled Model Intercomparison Project Phase 6 (CMIP6) corroborate this teleconnection relationship between high-latitude environmental changes and middle-latitude weather extremes, though the tendency and magnitude vary considerably among each participating model.
Ensemble daily simulations for elucidating cloud–aerosol interactions under a large spread of realistic environmental conditions
Authors: Dagan Guy , Stier Philip
Published: December 2019

Abstract. Aerosol effects on cloud properties and the atmospheric energy and radiation budgets are studied through ensemble simulations over two month-long periods during the NARVAL campaigns (December 2013 and August 2016). For each day, two simulations are conducted with low and high cloud droplet number concentrations (CDNC), representing low and high aerosol concentrations, respectively. This large data-set, which is based on a large spread of co-varying realistic initial conditions, enables robust identification of the effect of CDNC changes on cloud properties. We show that increases in CDNC drive a reduction in the top of atmosphere (TOA) net shortwave flux (more reflection) and a decrease in the lower tropospheric stability for all cases examined, while the TOA longwave flux and the liquid and ice water path changes are generally positive. However, changes in cloud fraction or precipitation, that could appear significant for a given day, are not as robustly affected, and, at least for the summer month, are not statistically distinguishable from zero. These results highlight the need for using large statistics of initial conditions for cloud–aerosol studies for identifying the significance of the response. In addition, we demonstrate the dependence of the aerosol effects on the season, as it is shown that the TOA net radiative effect is doubled during the winter month as compared to the summer month. By separating the simulations into different dominant cloud regimes, we show that the difference between the different months emerge due to the compensation of the longwave effect induced by an increase in ice content as compared to the shortwave effect of the liquid clouds. The CDNC effect on the longwave is stronger in the summer as the clouds are deeper and the atmosphere is more unstable.
Impact of land-water sensitivity contrast on MOPITT retrievals and trends over a coastal city
Authors: Ashpole Ian , Wiacek Aldona
Published: December 2019

Abstract. We compare MOPITT Version 7 (V7) Level 2 (L2) & Level 3 (L3) carbon monoxide (CO) products for the 1° x 1° L3 gridbox containing the coastal city of Halifax, Canada, for the seasons DJF and JJA, and highlight a limitation in the L3 products that has significant consequences for the temporal trends in near-surface CO identified using those data. Because this gridbox straddles the coastline, the MOPITT L3 products are created from the finer spatial resolution L2 products that are retrieved over both land and water, with a greater contribution from retrievals over water because more of the gridbox lies over water than land. We create alternative L3 products for this gridbox by separately averaging the bounded L2 retrievals over land (L3L) and water (L3W) and demonstrate that profile and total column CO (TCO) concentrations, retrieved at the same time, differ depending on whether the retrieval took place over land or water. These differences (ΔRET) are greatest, and most significant, in the lower troposphere (LT), with maximum mean differences of 11.4 % (14.9 ppbv, p = 0.116) at the 900 hPa level in DJF, and 10.8 % (12.4 ppbv, p = 0.005) at the surface profile level in JJA. Retrieved CO concentrations are more similar, on average, in the middle and upper troposphere (MT and UT), although large differences (in excess of 50 %) do infrequently occur. Significant (p
Modeling Total Electron Content derived from radio occultation measurements by COSMIC satellites over the African Region
Authors: Mungufeni Patrick , Stolle Claudia , Samireddipalle Sripathi , Migoya-Orué Yenca , Kim Yong Ha
Published: December 2019

Abstract. This study developed a model of Total Electron Content (TEC) over the African region. The TEC data were derived from radio occultation measurements done by the Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) satellites. Geomagnetically quiet time (Kp  −20 nT) data during the years 2008–2011, and 2013–2017 were binned according to local time, seasons, solar flux level, geographic longitude, and dip latitude. Cubic B splines were fitted to the binned data to obtain the model. The model was validated using TEC data of the years 2012 and 2018. The validation exercise revealed that, approximation of observed TEC data by our model produces root mean squared error of 4.8 TECU. Moreover, the modeled TEC data correlated highly with the observed TEC data (r = 0.93). Our model is the first attempt to predict TECs over the entire African region by using extensive COSMIC TEC measurements. Due to the extensive input data and the good modeling technique, we were able to reproduce the well-known features such as local time, seasonal, solar activity, and spatial variations of TEC over the African region.
Data for wetlandscapes and their changes around the world
Authors: Ghajarnia Navid , Destouni Georgia , Thorslund Josefin , Kalantari Zahra , Åhlén Imenne , Anaya-Acevedo Jesús A. , Blanco-Libreros Juan F. , Borja Sonia , Chalov Sergey , Chalova Aleksandra , Chun Kwok P. , Clerici Nicola , Desormeaux Amanda , Garfield Bethany B. , Girard Pierre , Gorelits Olga , Hansen Amy , Jaramillo Fernando , Jarsjö Jerker , Labbaci Adnane , Livsey John , Maneas Giorgos , McCurley Kathryn , Palomino-Ángel Sebastián , Pietroń Jan , Price René , Rivera-Monroy Victor H. , Salgado Jorge , Sannel A. Britta K. , Seifollahi-Aghmiuni Samaneh , Sjöberg Ylva , Terskii Pavel , Vigouroux Guillaume , Licero-Villanueva Lucia , Zamora David
Published: December 2019

Abstract. Geography and associated hydrological, hydroclimate and land use conditions and their changes determine the states and dynamics of wetlands and their ecosystem services. The influences of these controls are not limited to just the local scale of each individual wetland, but extend over larger landscape areas that integrate multiple wetlands and their total hydrological catchment – the wetlandscape. However, the data and knowledge of conditions and changes over entire wetlandscapes are still scarce, limiting the capacity to accurately understand and manage critical wetland ecosystems and their services under global change. We present a new database, consisting of geographic, hydrological, hydroclimate and land use information and data for 27 wetlandscapes around the world. This combines survey-based local information with geographic shapefiles and gridded datasets of large-scale hydroclimate and land use conditions and their changes over whole wetlandscapes. Temporally, the database contains 30-year time series of data for mean monthly precipitation and temperature, and annual land use conditions. The survey-based site information includes local knowledge on the wetlands, hydrology, hydroclimate and land uses within each wetlandscape, and on the availability and accessibility of associated local data. This novel database (available through PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.907398; Ghajarnia et al., 2019) can support site assessments, cross-regional comparisons, and scenario analyses of the roles and impacts of land use, hydroclimatic and wetland conditions and changes on whole-wetlandscape functions and ecosystem services.
Upper Jurassic carbonate buildups in the Miechów Trough, Southern Poland – insights from seismic data interpretation
Authors: Słonka Łukasz , Krzywiec Piotr
Published: December 2019

Abstract. The geometry and internal architecture of the Upper Jurassic carbonate depositional system in the epicontinental basin of western and central Europe, and within the northern margin of the Tethyan shelf are hitherto only partly recognised, especially in areas with thick Cretaceous and younger cover such as the Miechów Trough. In such areas, seismic data are indispensable for analysis of a carbonate depositional system, in particular for identification of the carbonate buildups and the enveloping strata. The study area is located in the central part of the Miechów Trough that in the Late Jurassic was situated within the transition zone between the Polish part of western and central European epicontinental basin and the Tethys Ocean. This paper presents the results of interpretation of 2D seismic data calibrated by deep wells that document the presence of large Upper Jurassic carbonate buildups. The lateral extent of particular structures is in the range of 400–1000 m, and their heights are in range of 150–250 m. Interpretation of seismic data revealed that the depositional architecture of the subsurface Upper Jurassic succession in the Miechów Trough is characterised by the presence of large carbonate buildups surrounded by basinal (bedded) limestone-marly deposits. These observations are compatible with depositional characteristics of well-recognised Upper Jurassic carbonate sediments that crop out in the adjacent Kraków-Częstochowa Upland. The presented study provides new information about carbonate open shelf sedimentation within the transition zone in the Late Jurassic, which proves the existence of much more extensive system of organic buildups which flourished in this part of the basin. Obtained results, due to high quality of available seismic data, provide also an excellent generic reference point for seismic studies of carbonate buildups from other basins and of different ages.
Applying artificial precipitations to mitigate the melting of the Muz Taw Glacier, Sawir Mountains
Authors: Wang Feiteng , Yue Xiaoying , Wang Lin , Li Huilin , Du Zhencai , Ming Jing
Published: December 2019

Abstract. The Glaciers in the Sawir Mountains, Altai area, are characterized by higher latitudes and lower elevations. Influenced by the westerly circulation and the polar air mass, the precipitation is abundant and evenly distributed over the year in this area. However, a continuing and accelerating mass loss of glaciers has been in presence since 1959. To study the role of precipitation in mitigating the glacier’s melting, we carried out two artificial-precipitation experiments on the Muz Taw Glacier of the Sawir Mountains on 19 and 22 August 2018, respectively. We measured the albedo and MB at different sites along the glacier before and after the individual experiment. According to the records of the automatic weather station (AWS) set up at the equilibrium line (EL, 3400 m), the amount of precipitation was 6.2 mm and 12.4 mm water equivalent in solid form by the two experiments, respectively. Due to the artificial solid precipitations, the glacier’s surface albedo significantly increased in the mid-upper area, and the amounts of the mass loss decreased by 17 %. We also propose a possible mechanism describing the role of precipitation in mitigating the melting of the glacier.
Spatiotemporal variation of snow depth in the Northern Hemisphere from 1992 to 2016
Authors: Xiao Xiongxin , Zhang Tingjun , Zhong Xinyue , Li Xiaodong , Li Yuxing
Published: December 2019

Abstract. Snow cover is an effective indicator of climate change due to its impact on regional and global surface energy and water balance, and thus also weather and climate, hydrological processes and water resources, and the ecosystem as a whole. The overall objective of this study is to investigate changes and variations of snow depth and snow mass over the Northern Hemisphere from 1992 to 2016. We developed a long term Northern Hemisphere daily snow depth and snow water equivalent product (NHSnow) by applying the support vector regression snow depth retrieval algorithm, using passive microwave remote sensing data from the period. NHSnow product was evaluated along with the other two snow cover products (GlobSnow and ERA-Interim/Land) for its accuracy across the Northern Hemisphere. The evaluation results show that NHSnow performs comparably well with relatively high accuracy (bias: −0.59 cm, mean absolute error: 15.12 cm, and root mean square error: 20.11 cm) when benchmarked against the station snow depth measurements. Further analyses were conducted across the Northern Hemisphere using snow depth, snow mass, and snow cover days as indices. Analysis results show that annual average snow mass have a significant declining trend, with a rate of about 19.72 km3 yr.−1 or a 13 % reduction in snow mass. Although spatial variation pattern of snow depth and snow cover days exhibited slight regional differences, they generally reveal the decreasing trend over the most area of the Northern Hemisphere. Our work provides evidence that rapid changes in snow depth and snow mass are occurring since the beginning of the 21st century, accompanied by dramatic climate warming.
Correction to: Pekel, K. “Moving Beyond Relationships Matter: An Overview of One Organization’s Work in Progress.” Journal of Youth Development, 14(4) 2019.
Authors: Walker Kate
Published: December 2019

There were mistakes in two citations within the references. The original article can be found via the DOI: https://doi.org/10.5195/jyd.2019.909
El museo en el siglo XXI: función y representatividad (a propósito del nuevo discurso del MNAC)
Authors: Vega Jesusa
Published: December 2019

Desde la instauración de la democracia en España toda la legislación sobre museos ha asumido la definición que dio el ICOM en 1946 donde se explicaba la finalidad y las funciones que debía desarrollar en base a las colecciones y su exposición. En relación con esta última, y a partir del nuevo discurso museológico del MNAC de los periodos del Renacimiento y el Barroco, reflexionamos sobre la centralidad del museo de arte en la política cultural, la relación de la institución con la sociedad, el cumplimiento de sus funciones y los nuevos modelos de gestión, con especial atención a la investigación.
Arroyo de las Almas (La Fregeneda, Salamanca): un nuevo conjunto con arte rupestre en la cuenca del Duero
Authors: Reis Mário , Vázquez Marcos Carlos
Published: December 2019

El conjunto arqueológico rupestre al aire libre del Arroyo de las Almas, en el municipio salmantino de La Fregeneda, fue descubierto por los autores de este texto a partir de septiembre de 2015. Los trabajos de prospección y documentación desarrollados en los meses subsiguientes a los primeros hallazgos, con el fin de conocer el entorno de manera precisa, nos condujeron a nuevas y relevantes evidencias artísticas, tanto paleolíticas como postpaleolíticas. Como resultado final de estas tareas arqueológicas se han diferenciado 4 núcleos grabados localizados en dicho arroyo y en varios de sus principales afluentes, con 24 rocas de pizarras y esquistos y, aproximadamente, 600 motivos grabados. En este trabajo presentamos una descripción detallada del ambiente geomorfológico y paisajístico de este nuevo conjunto además de una visión general de su repertorio gráfico en cada uno de los cuatro períodos cronoculturales registrados: Paleolítico Superior, Prehistoria Reciente, Edad del Hierro y Época Moderna y Contemporánea.
La protección del paisaje megalítico del río Gor (Granada). Criterios e instrumentos para la delimitación de una zona arqueológica territorial
Authors: Montufo Martín Antonio Manuel
Published: December 2019

El artículo presenta los trabajos para la delimitación y protección administrativa del conjunto de necrópolis megalíticas del río Gor como Bien de Interés Cultural, defendiendo que supone un hito al trasladar al ámbito de la protección patrimonial la dimensión territorial y paisajística que tiene el megalitismo. Se repasa brevemente la historia de la protección del megalitismo en Andalucía, y se argumenta el rol fundamental que ha desempeñado el análisis territorial y paisajístico a la hora de proponer una extensa delimitación para el denominado “Paisaje Megalítico del río Gor”. Junto a los criterios teóricos se ha empleado una metodología basada en el empleo sistemático de SIG para identificar las áreas de valor patrimonial a proteger.
Los cascos con cresta del Bronce Final de la Península Ibérica y la segunda fase de las estelas del Suroeste con espejo y casco (1275-1200 AC)
Authors: Mederos Martín Alfredo
Published: December 2019

A pesar de la escasez de cascos metálicos en la Península Ibérica, con seguridad sólo presentes en la ría de Huelva y quizás uno muy fragmentado en Vila Cova de Perrinho (Beira Litoral), ha ido incrementándose en los últimos años el número de cascos en estelas del Suroeste que nos permiten valorar mejor un elemento fundamental de la panoplia del guerrero y una posesión muy preciada. Su análisis indica que aparecen, junto a los espejos, en una segunda fase de las estelas del Suroeste, y se añaden a las estelas de iconografía tripartita con escudo, lanza y espada, las cuales que debieron comenzar hacia el 1325-1300 AC. Los primeros cascos cónicos apuntados con cresta convexa de tipo Biebesheim, conservados completos en Fundão, Santa Ana de Trujillo o Aldeia Velha, cabe situarlos hacia el 1275-1200 AC, asociados con espadas de enmangue rectangular que podrían ser de tipo Rosnöen. Estos elementos sugieren la llegada simultánea de influencias atlánticas y mediterráneas. La fase siguiente corresponde a estelas con antropomorfo debajo del escudo con escotadura en V de tipo Herzsprung y la presencia de espadas pistiliformes, caso de Cabeza de Buey I o Cabañas del Castillo durante el Bronce Final IIB, 1225-1150 AC. La etapa posterior es asignable a estelas donde el escudo y el antropomorfo tienen la misma importancia, perdurando las espadas pistiliformes. El esquematismo de algunas representaciones crea la duda si ya se introducen los primeros cascos cónicos apuntados con cresta cóncava de tipo Bernières d’Ailly en Zarza de Montánchez o Las Herencias I, durante el Bronce Final IIC, 1150-1050 AC. La fase final, en estelas donde el antropomorfo tiene un papel preeminente, las representaciones de cascos cónicos apuntados con cresta cóncava son muy esquemáticas en estelas de Setefilla o Ategua, durante el Bronce Final IIIA, 1050-950 AC.
Actitudes y hábitos lingüísticos entre el alumnado del Grado en Educación Infantil (UIB)
Authors: Calafat Vila Rosa , Calero-Pons Àlvaro
Published: December 2019

En la adquisición de una lengua, la competencia pragmática resulta imprescindible, puesto que de su conocimiento se deben derivar hábitos y actitudes positivas hacia el entorno. Este hecho tiene una especial relevancia cuando se trata del aprendizaje de una lengua minorizada, obligada a compartir funciones con otra de mayor peso simbólico. En este artículo, analizamos las percepciones lingüísticas de uno de los tres grupos de primer año que han cursado, a lo largo del primer cuatrimestre del año académico 2017-2018, la asignatura Lengua Catalana y su Didáctica, del Grado en Educación Infantil de la Universidad de las Illes Balears (UIB). Pretendemos confirmar la correlación entre actitudes y hábitos favorables al catalán con el logro de los objetivos curriculares de aprendizaje. La influencia del entorno, más allá de las políticas lingüísticas que se aplican para la normalización del catalán en la docencia universitaria balear, acaba determinando el rendimiento lingüístico del alumnado.
Key factors affecting consumption of meat and meat products from perspective of Slovak consumers
Authors: Predanocyová Kristí­na , Kubicová Ľubica , Kádeková Zdenka , Košičiarová Ingrida
Published: December 2019

Nowadays, meat and meat products are considered as a part of the daily diet of most people. Therefore, it is necessary to deal with meat and meat products and their consumption according to individual types of meat. Based on the above, the paper is focused on the issue of consumption of individual types of meat in the Slovak Republic and the identification of key factors affecting the consumption of meat and meat products from Slovak consumers' point of view. Secondary and primary data is used to fulfil the aim of the paper. Secondary data is obtained from the Statistical Office of the Slovak Republic, on the basis of which the development of consumption of individual types of meat is predicted by 2020. It can be stated that poultry and pork meat and meat products consumption is constantly increasing and there is a slight change in beef and fish meat and meat products consumption, which is currently at a very low level. In the context of the above, a questionnaire survey is realised and based on its results it could be concluded that the price is a main reason for the inadequate consumption of different types of meat. However, consumers consume meat and meat products mainly because of taste, which can be considered as an aspect of irrationality in the diet of Slovak consumers. Furthermore, a number of factors affecting the purchase and consumption of meat and meat products have been identified. The results show rational and irrational aspects in the decision making of Slovak consumers. The most important factor is the quality of meat and meat products, which consumers perceive differently, mainly on the basis of their own personality and other aspects of meat quality (price, origin, freshness, and sensory characteristics of meat). Other important factors are the perception of composition, freshness, price and country of origin.
Green Manufacturing in Agro Processing SMEs: Unraveling the Relationship Between Drivers and Their Effects on Adoption Practices in Ghana
Authors: Gyasi-Mensah William
Published: December 2019

Environmental matters have been a subject of importance for national policy makers, ecology concerned groups and organizations. Green initiatives such as, green manufacturing has been seen to be a game changer in ensuring environmentally safe manufacturing by firms and nations while reaping the accompanying benefits. Investigations into motivating factors are still not fully carried out from all contexts. This research sought to find the effects that these drivers have on adoption of eco-friendly initiatives among small and medium enterprises from a developing country context. Structural Equation Model was adopted to analyze the data and verify the hypotheses. The outcomes indicate that financial and business benefits, competitor pressure and national environmental regulations positively influenced the adoption of green manufacturing adoption initiatives. Management and staff commitment influenced adoption slightly. These outcomes are vital to developing strategies for improving green practices implementation within firms for positive environmental and economic performance. Governments in developing nations especially Ghana will be well informed on which parts of the regulations to strengthen and enforce for improved environmental responsibility from Ghanaian agro processing small and medium enterprises and other businesses.
The grammaticalisation of a copula in vernacular Arabic
Authors: Camilleri Maris , Sadler Louisa
Published: December 2019

It is standardly assumed that Arabic copula constructions with present tense interpretation involve either a null copula or a pronominal copula. This paper provides evidence that some Arabic vernaculars are developing a three-way split, with an additional copula form occurring in some predicational copula clauses. This form has grammaticalised out of the active participle form of the posture verb meaning ‘sit’. While at different stages of development in different varieties of Arabic, this emergent copula shows the characteristics of a locative (temporary and/or permanent, depending on the variety) or contingent state (stage-level) copula, standing in contrast with the use of a null copula strategy, which marks characterising/defining individual-level properties. We propose a grammaticalisation trajectory for this copula in the Arabic varieties based on the comparative patterns of variation across those dialects, showing that the trajectory postulated for other, typologically distinct languages is also applicable to Arabic and hence providing further support for it. We suggest that there is also evidence of a distinct but related trajectory in some varieties which have developed a semantically bleached lexical existential predicate from this same form. We provide further evidence of the importance of the temporary/permanent split in the copula systems of Arabic arguing that the developing split copula system based on the active participle of the ‘sit’ verb is in alignment with the development of two other parallel split copula systems in other geographically diverse Arabic varieties, which use different bases/strategies for grammaticalisation.
Total, Asymmetric and Frequency Connectedness between Oil and Forex Markets
Authors: Baruník Jozef , Kočenda Evžen
Published: December 2019

We analyze total, asymmetric and frequency connectedness between oil and forex markets using high-frequency, intra-day data over the period 2007-2017. By employing variance decompositions and their spectral representation in combination with realized semivariances to account for asymmetric and frequency connectedness, we obtain interesting results. We show that divergence in monetary policy regimes affects forex volatility spillovers but that adding oil to a forex portfolio decreases the total connectedness of the mixed portfolio. Asymmetries in connectedness are relatively small. While negative shocks dominate forex volatility connectedness, positive shocks prevail when oil and forex markets are assessed jointly. Frequency connectedness is largely driven by uncertainty shocks and to a lesser extent by liquidity shocks, which impact long-term connectedness the most and lead to its dramatic increase during periods of distress.
La música y la poesía, dos vecinas de rellano
Authors: Cristóbal Hornillos Rubén
Published: December 2019

Podríamos haber elegido entre miles de citas para abrir este monográfico, pero cuando esta publicación estaba a punto de llegar a su fin (o a su comienzo según se mire), unas palabras del periodista Iñaki Gabilondo en una entrevista radiofónica sintetizaron como pocas el sentido de esta obra: “La música y la poesía son vecinas de rellano”. Esta frase justifica por sí sola este trabajo en el que se han visto implicados durante varios meses –aunque recogiendo los frutos de varios años- una serie de autores desconocidos entre sí, pero unidos por un objetivo común: aprovechar la literatura clásica que contiene la música moderna para acercarla a los estudiantes de todos las edades, pero en especial a los niños y adolescentes de hoy en día.
Itinerarios lectores para la educación poética en la ESO: del rap a la poesía canónica
Authors: Lleida Lanau Enrique
Published: December 2019

El presente artículo analiza la potencialidad educativa que pueda tener el rap para el aprendizaje de la poesía en la Educación Secundaria Obligatoria (ESO). Se ha utilizado una metodología etnográfica dentro del contexto educativo, que incluye entrevistas a profesores de secundaria y raperos vinculados con ámbitos de enseñanza formal e informal, un cuestionario a alumnos de 4º de ESO y el análisis y valoración de una intervención educativa. Los resultados obtenidos muestran que el rap puede ser una buena herramienta educativa que mejora el autoconcepto de los alumnos, favorece la motivación, afianza el gusto por la poesía y consolida el aprendizaje en cuanto a la comprensión de textos poéticos.
Reseña: Teaching literature and language through multimodal texts, por Elena Domínguez Romero, Jelena Bobkina y Svetlana Stefanova
Authors: Lavorante Cira
Published: December 2019

Reseña de Teaching literature and language through multimodal texts, por Elena Domínguez Romero, Jelena Bobkina y Svetlana Stefanova
Tierras, pastas y vasos. Algunas cuestiones en torno a la investigación sobre la gestión de las materias primas para hacer cerámica
Authors: Clop García Xavier
Published: December 2019

La investigación sobre las estrategias de gestión de las materias primas constituye, sin duda, una de las vías de estudio más ampliamente desarrolladas en el marco de la proliferación de los estudios tecnológicos sobre las producciones cerámicas realizadas por las comunidades humanas durante la prehistoria reciente, como demuestran la cantidad de estudios de este tipo realizados los últimos 30 años. Sin embargo, la evaluación del impacto de estos estudios en las discusiones más generales sobre los procesos de desarrollo y cambio de esas comunidades nos lleva a plantear la necesidad de avanzar en la formulación de propuestas teóricas y metodológicas que permitan definir marcos de investigación más robustos con los que proponer hipótesis interpretativas sustantivas sobre determinados aspectos de las formas de organización de la producción y consumo de aquellas comunidades. En este trabajo se plantean algunas cuestiones que, sin ánimo de ser exhaustivos, creemos que deben abordarse en la evolución de los estudios sobre las estrategias de gestión de las materias primas para hacer cerámica en el pasado. Estas cuestiones deben servir tanto para mejorar la comprensión del papel de estos trabajos en un marco de discusión más general como para plantear a los investigadores especializados algunos aspectos que habría que abordar para conseguir dotar de mayor consistencia esta vía de estudio.
Etnoarqueología como experimentación: propuesta para la interpretación de los patrones de fractura
Authors: Roselló Jaume García , Calvo Trias Manuel
Published: December 2019

En este artículo proponemos una discusión sobre la construcción de modelos de análisis metodológico de la cerámica centrados en el establecimiento de colecciones de referencia. A modo de ejemplo, exponemos nuestra propuesta para estudiar el modelado a partir del análisis de los patrones de fractura. Para ello, hemos establecido una estrategia experimental sobre cerámicas etnográficas y reproducciones fabricadas con diferentes técnicas. De este modo, hemos evaluado la fiabilidad de nuestra propuesta metodológica para el estudio de cerámicas arqueológicas y hemos construido un marco referencial que da mayor solidez a nuestras interpretaciones.
Entre trazas, gestos y productores: el análisis traceológico como método de aproximación a las técnicas de modelado en las producciones cerámicas prehistóricas
Authors: Cámara Manzaneda Javier
Published: December 2019

Este artículo tiene como objetivo acercarse a las técnicas de modelado a mano y a las formas de hacer en las producciones cerámicas prehistóricas a partir de la lectura de las trazas de fabricación. El método de análisis se basa en el reconocimiento y el registro de las trazas con la intención de inferir todo un conjunto de categorías vinculadas al modelaje de los productos cerámicos. Por ello, en este trabajo se recogen las principales aportaciones realizadas en trabajos previos sobre esta línea de investigación y se integran en el procedimiento de análisis las variables procedentes de dos metodologías que han sido desarrolladas sobre la base de trabajos de campo etnoarqueológicos (Livingstone Smith, 2001; García y Calvo, 2013). Además, la aplicación de este método se ha reforzado a partir del análisis de un caso de estudio y presentando un protocolo de tratamiento de datos con el fin de evaluar la variabilidad técnica en los contextos arqueológicos.
Mit Złotego Wieku we wczesnoromantycznej Bildungsgeschichte albo o aporiach programu wychowania rodzaju ludzkiego w historiozofii Novalisa
Authors: Rolka Malwina
Published: December 2019

The subject of the article is reconstruction of assumptions and postulates of Novalis’s education program of the human race aimed at indication of the distinctive features of early Romantic historiosophy as its dependence on Enlightenment thought. Examination of both these aspects in their interpenetration allows revealing the inner contradictions of Novalis’s project determining its utopian character, which manifests itself in the vision of the Golden Age as an expression of the Romantic “new mythology”.
Próba konstrukcji narzędzi do analizy etyczności wypowiedzi z użyciem teorii aktów mowy
Authors: Dziurosz-Serafinowicz Dominika
Published: December 2019

The aim of this paper is to present tools for analyzing the ethics of utterances in the face-to-face conversation with the use of speech act theory. In particular, an attempt is made to show that ethical examination of the utterance can consist in analyzing its illocution (intention) and perlocution (effect). Additionally, it is proposed that treating a speech act as complementary can be used in the analysis of utterances as those which demand ethical or non-ethical answer.
The Process of Increasing the Protective Effectiveness of HARDOX Steel by Way of Selective Thermal and Thermo-Chemical Processing
Authors: ZIŃCZUK Andrzej
Published: December 2019

The work presents the influence of selective thermal and thermo-chemical processing on the protective properties of an example ballistic plate made of HARDOX 500 steel. A novel process that does not require advanced thermal processing appliances and has led to changes in the crystallographic structures in various layers of the material is presented. The presented laboratory and field testing results show that it is possible to achieve a class of ballistic resistance similar to that of thicker plates made of the same steel.
Czy interesariusze przedsiębiorstwa wspierają jego konkurencyjność?
Authors: Sobiecki Roman
Published: December 2019

Celem artykułu jest pokazanie wybranych problemów związanych z konkurencja gospodarczą, rywalizacją podmiotów, mającą na celu osiągnięcie korzyści z prowadzonej działalności gospodarczej.
WSE in view of the intensification of the delisting campanies
Authors: Rogowski Waldemar , Gemra Kamil
Published: December 2019

The article was devoted to the phenomenon of delisting companies from the Warsaw Stock Exchange. The purpose of the article is to identify the reasons of leaving the Stock Exchange by issuers and to predict trends related to this phenomenon in the future. The article describes reasons found in the official materials of the WSE as well as other direct and indirect factors that influence withdrawal of companies from the stock exchange. In addition, the case study method was used, describing the tender offer for Prime Car Management shares and its regulatory consequences. Based on the analysis, it was found that the domestic Stock Exchange lost its attractiveness for companies from traditional industries and the phenomenon of deleting will continue to intensify with the simultaneous absence of new issuers debuting on the market. An opportunity for the WSE may be technology entities that obtain much higher pricing acceptable by investors.
Decentralized Business Models: Impact of blockchain technology on business model generation
Authors: Ciupa Katarzyna
Published: December 2019

Even though blockchain technology, since its first presentation in the Bitcoin whitepaper, has received lots of attention from both individuals, or private and public international organizations, its development has not always been enthusiastically welcomed and often created more confusion than expected. Albeit currently almost everyone agrees that blockchain is (technology-wise) the great successor of the Internet, its tremendous potential is also highly challenging. Growing number of various constructs utilizing blockchain technology in a very innovative manner have emerged. However, they have also created a complex ecosystem with many initiatives being far away from the original blockchain proposition. As a result, it has become crucial to understand what blockchain technology has to offer, what kind of impact it could have on existing businesses, and whether
blockchain allows new business models to be created. The aim of this paper is to discuss and evaluate both the blockchain’s potential, as well as its limitations and its implications for development and generation of business models.