bluuebunny/crossref_metadata_2025 huggingface dataset:
Examining Study Abroad Involvement: A Descriptive and Comparative Analysis of Agriculture Teaching Faculty
Authors: Rampold Shelli D. , Bunch J.C. , Cater Melissa , Blackburn J. Joey , Burnett Michael
Published: October 2018

This descriptive and comparative study was conducted to explain agriculture teaching faculty involvement in and perceptions of study abroad. Further, faculty involvement and perceptions were compared based on the personal and professional characteristics of faculty. Faculty involvement in this study included a set of activities in which faculty may be involved in addition to leading a study abroad program. Findings revealed that faculty were somewhat involved in study abroad activities and perceived study abroad outcomes as important. However, faculty were slightly less convinced that studying abroad actually produces those outcomes among students. While faculty perceived increasing study abroad participation as a priority at the institutional and college levels, they agreed less with increasing study abroad participation as being a priority among administrators and colleagues in their department. Analysis of differences between groups yielded few significant findings, with the exception of the prior international experience acquired by faculty. Recommendations for future research include replication of this study with faculty from additional universities, as well as qualitative or mixed method approaches to further investigate inconclusive findings of this study.
Reduction of radiation dose for coronary computed tomography angiography using prospective electrocardiography-triggered high-pitch acquisition in clinical routine
Authors: Chaosuwannakit Narumol , Makarawate Pattarapong
Published: October 2018

Purpose

To evaluate the image quality, radiation exposure, and means of application in a group of patients who underwent coronary computed tomography angiography (CCTA) performed with low-dose prospective electrocardiography (ECG)-triggered acquisition in which a standard sequence was added if the low-dose sequence did not allow reliable exclusion of coronary stenosis with respect to image quality.

Material and methods

The present study was approved by the Ethics Committee of the Faculty of Medicine, and informed consent was obtained from all patients. The authors performed a retrospective review of 256 consecutive patients referred for CCTA using dual-source CT scanner (Definition FLASH, Siemens, Germany). CCTA was performed using prospective ECG-triggered high-pitch acquisition. In patients with higher heart rates (> 65 bpm) or in whom irregular heart rates were noted prior to the scan, a subsequent CCTA was performed immediately (double flash protocol). The effective radiation dose was calculated for each patient. All images were evaluated by two independent observers for quality on a four-point scale with 1 being non-diagnostic image quality and 4 being excellent.

Results

Mean effective whole-body dose of CCTA was 1.6 ± 0.4 mSv (range, 0.4-5.4) for the entire cardiac examination and 0.9 ± 0.3 mSv (range, 0.4-2.8) for individual prospective ECG-triggered high-pitch CCTAs. In 27 of these patients with higher heart rates or occasional premature ventricular contractions or atrial fibrillation, subsequent CCTAs were performed immediately. The average image quality score was good to excellent with less than 1% unevaluable coronary segments. The double flash protocol resulted in a fully diagnostic CCTA in all cases.

Conclusions

The prospective ECG-triggered high-pitch CCTA technique is feasible and promising in clinical routine with good to excellent image quality and minimal radiation dose. The double flash protocol might become a more robust tool in patients with higher heart rates or arrhythmia.
Interventional radiology treatments for iatrogenic severe bleeding during percutaneous coronary interventions
Authors: Pasecki Piotr , Narloch Jerzy , Tkaczewski Konrad , Wasek Wojciech , Ziecina Piotr , Brzozowski Krzysztof
Published: October 2018

Purpose

Interventional cardiology and interventional radiology are separate medical disciplines in which intra-arterial contrast media are used. Interventional cardiology has resigned from many types of treatment techniques that are now used and developed in the field of interventional radiology. In the event of iatrogenic bleeding during coronary interventions, there is an urgent need to use safe and efficient rescue procedures that are as efficient as cardiosurgery but use simpler treatment options. Serious perforations require immediate endovascular interventions. Medical history may reveal risk factors for artery perforation. Medicines, location of artery perforation, and extent of bleeding are directly associated with the prognosis. Most often, arterial perforations are due to inappropriate wire manipulation or use of oversized balloons or cutting balloons. Prolonged, artery-occluding balloon inflation, covered stent implantation, and embolisation with different agents are among the available treatment options for artery ruptures.

Material and methods

A retrospective analysis was carried out among selected patients with iatrogenic vascular complications during procedures involving either coronary or non-coronary arteries.

Results

Only representative cases were selected and presented in the patient subsection.

Conclusions

Artery perforation during cardiac catheterisation can lead to dire consequences. To manage this complication, clinicians need pre-established procedures, adequate resources, and knowledge. Interventional radiology can be used as a salvage therapy in such cases.
CT/MRI LI-RADS v2017 – review of the guidelines
Authors: Rosiak Grzegorz , Podgórska Joanna , Rosiak Edyta , Cieszanowski Andrzej
Published: October 2018

The Liver Imaging-Reporting and Data System (LI-RADS or LR) is a classification system for reading and reporting imaging studies in patients with high risk for hepatocellular carcinoma (HCC). One of its main goals is to improve communication between specialties, especially radiologists, hepatologists, surgeons, and pathologists. LI-RADS defines imaging features of the lesions and stratifies the risk of HCC into categories. It is the most comprehensive and highly specific system; however, its seeming complexity prevents many radiologists from using it in everyday practice. This article is a detailed review of the latest version of LI-RADS (v. 2017), which should be helpful for radiologists who are not very familiar with the system and its latest update.
Observations of the microphysical evolution of convective clouds in the southwest of the United Kingdom
Authors: Jackson Robert , French Jeffrey R. , Leon David C. , Plummer David M. , Lasher-Trapp Sonia , Blyth Alan M. , Korolev Alexei
Published: October 2018

Abstract. The COnvective Precipitation Experiment (COPE) was designed to investigate
the origins of heavy convective precipitation over the southwestern UK, a
region that experiences flash flooding due to heavy precipitation from
slow-moving convective systems. In this study, the microphysical and
dynamical characteristics of developing turrets during 4 days in July and
August 2013 are analyzed. In situ cloud microphysical measurements from the
University of Wyoming King Air and vertically pointing W-band radar
measurements from Wyoming Cloud Radar are examined, together with data from
the ground-based NXPol radar. The 4 days presented here cover a range of environmental conditions in
terms of wind shear and instability, resulting in a similarly wide
variability in observed ice crystal concentrations, both across days as well
as between clouds on individual days. The highest concentration of ice was
observed on the days in which there was an active warm-rain process supplying
precipitation-sized liquid drops. The high ice concentrations observed (>100 L−1) are consistent with the production of secondary ice particles
through the Hallett–Mossop process. Turrets that ascended through remnant
cloud layers above the 0 ∘C level had higher ice particle
concentrations, suggesting that entrainment of ice particles from older
clouds or previous thermals may have acted to aid in the production of
secondary ice through the Hallett–Mossop process. Other mechanisms such as
the shattering of frozen drops may be more important for producing ice in
more isolated clouds.
The importance of interactive chemistry for stratosphere–troposphere–coupling
Authors: Haase Sabine , Matthes Katja
Published: October 2018

Abstract. Recent observational and modeling studies suggest that not only southern hemispheric surface climate is influenced by stratospheric ozone depletion but also northern hemisphere (NH) spring, implying a strong interaction between dynamics and chemistry. Here, we systematically analyze the importance of interactive chemistry for the representation of stratosphere–troposphere–coupling and in particular the effects on NH surface climate during the recent past. We use the interactive and specified chemistry version of NCAR's Whole Atmosphere Community Climate Model coupled to an ocean model to investigate differences in the mean state of the NH stratosphere as well as in stratospheric extreme events, namely sudden stratospheric warmings (SSWs), and their surface impacts. We also test the effects of zonally symmetric versus asymmetric prescribed ozone, testing the importance of ozone waves for the representation of stratospheric mean state and variability. The interactive chemistry simulation is characterized by a statistically significant stronger and colder polar night jet (PNJ) during spring when ozone depletion becomes important. We identify a negative feedback between lower stratospheric ozone and atmospheric dynamics during the break down of the stratospheric polar vortex in the NH, which contributes to the different characteristics of the PNJ between the simulations. Not only the mean state, but also stratospheric variability is better represented in the interactive chemistry simulation, which shows a more realistic distribution of SSWs as well as a more persisting surface impact afterwards compared to the simulation where the feedback between chemistry and dynamics is switched off. We hypothesize that this is also related to the feedback between ozone and dynamics through the intrusion of ozone rich air into polar latitudes during SSWs. The results from the zonally asymmetric ozone simulation are closer to the interactive chemistry simulations, implying that a three-dimensional representation of prescribed ozone is necessary and desirable in case interactive chemistry is not available or possible for (multi-) centennial simulations. Our findings underline the importance of the representation of interactive chemistry and its feedback on the stratospheric mean state and variability not only on the SH but also on the NH during the recent past.
A practical method to remove a priori information from lidar optimal estimation method retrievals
Authors: Jalali Ali , Hicks-Jalali Shannon , Sica Robert J. , Haefele Alexander , von Clarmann Thomas
Published: October 2018

Abstract. Lidar retrievals of atmospheric temperature and water vapour mixing ratio profiles using the Optimal Estimation Method (OEM) typically use a retrieval grid whose number of points is larger than the number of pieces of independent information obtainable from the measurements. Consequently, retrieved geophysical quantities contain some information from their a priori, which can affect the results in the higher altitudes of the temperature and water vapour profiles due to decreasing signal-to-noise ratios. The extent of this influence can be estimated using the retrieval’s averaging kernels. The removal of formal a priori information from the retrieved profiles in the regions of prevailing a priori effects is desirable, particularly when these greatest heights are of interest for scientific studies. We demonstrate here that removal of a priori information from OEM retrievals is possible by transforming the retrieval from a fine grid to a coarser grid such that the averaging kernel is close to unity at each grid point. In this case, setting the a priori term in the OEM retrieval equation to zero minimizes the effect of the a priori for the coarse grid retrieval. We demonstrate the improvements gained by this technique for the case of a large power-aperture Rayleigh scatter lidar nighttime temperature retrieval and for a Raman scatter lidar water vapor mixing ratio retrieval during both day and night.
Planktonic foraminiferal spine versus shell carbonate Na incorporation
in relation to salinity
Authors: Mezger Eveline M. , de Nooijer Lennart J. , Bertlich Jacqueline , Bijma Jelle , Nürnberg Dirk , Reichart Gert-Jan
Published: October 2018

Abstract. Sea surface salinity is one of the most important parameters to reconstruct in paleoclimatology, reflecting amongst others the hydrological cycle, paleo-density, ice volume, and regional and global circulation of water masses. Recent culture studies and a Red Sea field study revealed a significant positive relation between salinity and Na incorporation within benthic and planktonic foraminiferal shells. However, these studies reported varying partitioning of Na between and within the same species. The latter could be associated with ontogenetic variations, most likely spine loss. Varying Na concentrations were observed in different parts of foraminiferal shells, with especially spines and regions close to the primary organic sheet being enriched in Na. In this study, we unravel the Na composition of different components of the planktonic foraminiferal shell wall using Electron Probe Micro Analysis (EPMA) and solution-ICP-MS. A model is presented to interpret EPMA data for spines and spine bases to quantitatively assess differences in composition and contribution to whole shell Na/Ca signals. The same model can also be applied to other spatial inhomogeneities observed in foraminiferal shell chemistry, like elemental (e.g. Mg, Na, S) banding and/or hotspots. The relative contribution of shell calcite, organic linings, spines and spine bases to whole shell Na chemistry is considered quantitatively. This study shows that whereas the high Na areas may be susceptible to taphonomy, the Na chemistry of the shell itself seems relatively robust. Comparing both shell and spine Na/Ca values with salinity shows that shell chemistry records salinity, albeit with a very modest slope.
Hybridisation of brownboost classifier and glowworm swarm based
optimal sensor placement for water leakage detection
Authors: Rayaroth Rejeesh , Gopalakrishnan Sivaradje
Published: October 2018

Abstract. Water Distribution System distributes the water to customer with the better quality and pressure. Distribution system supplies the water from their source to usage point. Due to the leakage, the sufficient amount of water is not delivered to the consumer. Many researchers introduced the techniques for detecting the water leakage in distribution system. But, the water leakage detection accuracy was not improved and time consumption was also not reduced. To improve the water leakage detection performance, Enhanced BrownBoost Classifier based Glowworm Swarm Optimization (EBBC-GWO) Method is introduced. EBBC-GWO method introduces two models namely, Enhanced BrownBoost Classifier model and Glowworm Swarm Optimization model. Enhanced BrownBoost Classifier model considers k-Nearest Neighbor (k-NN) classifier as weak classifier. It classifies the training samples with neighbor's majority vote for allocating the object to the class. Brownboost classifier combines all k-NN classifier to construct strong classifier. By this way, data are classified as the normal data or abnormal data with higher accuracy. After classification, optimization process is executed where every solution corresponds to the glowworm (i.e., abnormal pressure data node) in search space. Every glowworm has objective function for addressing the optimization problem. Every glowworm operates in probabilistic means to choose the neighbor with higher luciferin value and transmit to it. Glowworm updates its location to the glowworm in dynamic decision space and optimal one is selected for water leakage detection. By this way, water leakage detection accuracy is improved with lesser false positive rate. Experimental evaluation of proposed EBBC-GWO method is carried out with respect to number of pressure data and sensor placement nodes. The results demonstrated that EBBC-GWO method is higher in case of classification accuracy, false positive rate, classification time and water leakage detection accuracy. The simulation results show that EBBC-GWO method increases the performance of water leakage detection accuracy and reduces classification time when compared to state-of-the-art works.
Simulation of observed climate changes in 1850–2014 with climate model INM-CM5
Authors: Volodin Evgeny , Gritsun Andrey
Published: October 2018

Abstract. Climate changes observed in 1850–2014 are modeled and studied on the basis
of seven historical runs with the climate model INM-CM5 under the scenario
proposed for the Coupled Model Intercomparison Project Phase 6 (CMIP6). In
all runs global mean surface temperature rises by 0.8 K at the end of the
experiment (2014) in agreement with the observations. Periods of fast warming
in 1920–1940 and 1980–2000 as well as its slowdown in 1950–1975 and
2000–2014 are correctly reproduced by the ensemble mean. The notable change
here with respect to the CMIP5 results is the correct reproduction of the
slowdown in global warming in 2000–2014 that we attribute to a change in
ocean heat uptake and a more accurate description of the total solar
irradiance in the CMIP6 protocol. The model is able to reproduce the correct
behavior of global mean temperature in 1980–2014 despite incorrect phases of
the Atlantic Multidecadal Oscillation and Pacific Decadal Oscillation indices
in the majority of experiments. The Arctic sea ice loss in recent decades is
reasonably close to the observations in just one model run; the model
underestimates Arctic sea ice loss by a factor of 2.5. The spatial pattern of
the model mean surface temperature trend during the last 30 years looks close
to the one for the ERA-Interim reanalysis. The model correctly estimates the
magnitude of stratospheric cooling.
Glider data collected during the Algerian Basin Circulation
Unmanned Survey from 2014 to 2016
Authors: Cotroneo Yuri , Aulicino Giuseppe , Ruiz Simon , Sánchez Román Antonio , Torner Tomas Marc , Pascual Ananda , Fusco Giannetta , Heslop Emma , Tintoré Joaquín , Budillon Giorgio
Published: October 2018

Abstract. We present data collected in the framework of the Algerian BAsin Circulation Unmanned Survey - ABACUS project. ABACUS main objective is the monitoring of the basin circulation and of the surface and intermediate water masses physical and biological properties in a key region of the Mediterranean Sea circulation. Data have been collected through deep glider cruises in the Western Mediterranean Sea during the autumns of 2014, 2015 and 2016. Glider missions were realized in the Algerian Basin, between the Island of Mallorca and the Algerian Coast. Across the three glider missions, eight repeated transects were obtained which enabled us to investigate the basin scale circulation and the presence of mesoscale structures utilising both the adaptive sampling capabilities of the gliders and the higher resolution of the data. After collection, all data passed a quality control procedure and were then made available through an unrestricted repository at https://doi.org/10.25704/b200-3vf5. The actual dataset spans three fall seasons, providing an important contribution to the data collection in the chronically undersampled Algerian Basin. Temperature and salinity data collected in the first 975 m of the water column allowed us to identify the main water masses and describe their characteristics improving the understanding of the dynamics of the region. On the time scale of the project, data show a large variability at the surface layer and reduced variability at the intermediate and deep layers. Our measurements have been successfully compared to data previously collected in the area from 1909 to 2011. Results showed similar overall distribution, ranges and variability as the historical data, with no outliers in the surface or deep layers.
Near-real-time environmental monitoring and large-volume data collection over slow communication links
Authors: Krassovski Misha B. , Lyon Glen E. , Riggs Jeffery S. , Hanson Paul J.
Published: October 2018

Abstract. Climate change studies
are one of the most important aspects of modern science and related
experiments are getting bigger and more complex. One such experiment is the
Spruce and Peatland Responses Under Changing Environments (SPRUCE;
http://mnspruce.ornl.gov, last access: 16 October 2018) conducted in
northern Minnesota. The SPRUCE experimental mission is to assess
ecosystem-level biological responses of vulnerable, high-carbon terrestrial
ecosystems to a range of climate warming manipulations and an elevated
CO2 atmosphere. This manipulation experiment generates a lot of
observational data and requires a reliable on-site data collection system,
dependable methods to transfer data to a robust scientific facility, and
real-time monitoring capabilities. This publication shares our experience of
establishing a near-real-time data collection and monitoring system via a
satellite link using the not very well-known possibilities of PakBus
protocol.
Small-scale characterization of vine plant root water uptake via 3-D electrical resistivity tomography and mise-à-la-masse method
Authors: Mary Benjamin , Peruzzo Luca , Boaga Jacopo , Schmutz Myriam , Wu Yuxin , Hubbard Susan S. , Cassiani Giorgio
Published: October 2018

Abstract. The investigation of plant roots is inherently difficult and often neglected.
Being out of sight, roots are often out of mind. Nevertheless, roots play a key role
in the exchange of mass and energy between soil and the atmosphere, in addition to
the many practical applications in agriculture. In this paper, we propose a
method for roots imaging based on the joint use of two electrical
noninvasive methods: electrical resistivity tomography (ERT) and
mise-à-la-masse (MALM). The approach is based on the key assumption that the
plant root system acts as an electrically conductive body, so that injecting
electrical current into the plant stem will ultimately result in the injection
of current into the subsoil through the root system, and particularly through
the root terminations via hair roots. Evidence from field data, showing that
voltage distribution is very different whether current is injected into the
tree stem or in the ground, strongly supports this hypothesis. The proposed
procedure involves a stepwise inversion of both ERT and MALM data that
ultimately leads to the identification of electrical resistivity (ER)
distribution and of the current injection root distribution in the
three-dimensional soil space. This, in turn, is a proxy to the active (hair)
root density in the ground. We tested the proposed procedure on synthetic
data and, more importantly, on field data collected in a vineyard, where the
estimated depth of the root zone proved to be in agreement with literature on
similar crops. The proposed noninvasive approach is a step forward towards a
better quantification of root structure and functioning.
Assessing the tsunami mitigation effectiveness of a planned Banda Aceh Outer Ring Road (BORR), Indonesia
Authors: Syamsidik Syamsidik , Tursina Tursina , Suppasri Anawat , Al'ala Musa , Lutfhi Mumtaz , Comfort Louise K.
Published: October 2018

Abstract. This research aimed to assess the tsunami flow velocity and height reduction produced by a planned elevated road spanned parallel to the coast of Banda Aceh called Banda Aceh Outer Ring Road (BORR). Cornell Multi-Grid Coupled Tsunami Model (COMCOT) was used to simulate eight scenarios of the tsunami. One of them was based on the 2004 Indian Ocean tsunami. Two magnitudes of earthquake were used, that is, 8.5 and 9.15 Mw. Both the earthquakes were generated from the same source location as in the 2004 case, around the Andaman Sea. Land use data of the innermost layer of the simulation area were adopted based on the 2004 condition and the land use planning of the city for 2029. The results of this study reveal that the tsunami flow depths and flow velocities can be reduced by about 9 % by using the elevated road for earthquake magnitude 9.15 Mw and about 22 % for earthquake magnitude 8.5 Mw. Combined with the land use planning 2029, the elevated road could reduce the maximum flow velocities behind the road by about 72 %. Notably, the proposed land use for 2029 will not be sufficient to deliver any effects on the tsunami mitigation without the elevated road structures. We recommend the city to construct the elevated road as this could be part of the co-benefit structures for tsunami mitigation. The proposed BORR appears to deliver significant reduction of impacts in the smaller intensity tsunamis compared to the 2004 Indian Ocean tsunami.
Evaluation of extreme wave probability on the basis of long-term data analysis
Authors: Bulgakov Kirill , Kuzmin Vadim , Shilov Dmitry
Published: October 2018

Abstract. A method of calculation of wind wave height probability based on the significant wave height probability is described (Chalikov and Bulgakov, 2017). The method can also be used for estimation of the height of extreme waves of any given cumulative probability. The application of the method on the basis of long-term model data is presented. Examples of averaged annual and seasonal fields of extreme wave heights obtained using the above method are given. Areas where extreme waves can appear are shown.
Use of a hydrodynamic model for the management of the water renovation in a coastal system
Authors: Cerralbo Pablo , F.-Pedrera Balsells Marta , Mestres Marc , Fernandez Margarita , Espino Manuel , Grifoll Manel , Sanchez-Arcilla Agustin
Published: October 2018

Abstract. In this contribution we investigate the hydrodynamic response in Alfacs Bay (Delta Ebro, NW Mediterranean Sea) to different anthropogenic modifications in freshwater flows and inner bay-open sea connections. The fresh water, coming from rice field irrigation, contains nutrients and pesticides and therefore affects in multiple ways the productivity and water quality of the bay. The application of a nested oceanographic circulation modelling suite within the bay provides objective information to solve water quality problems that are becoming more acute due to temperature and phytoplankton concentration peaks during the summer period, when sea water may exceed 28 ˚C leading high rates of mussels mortality and therefore a significant impact on the local economy. The effects of different management solutions (like a connection channel between the inner bay and open sea) are hydro-dynamically modelled in order to diminish residence times (e-flushing time) and water temperatures. The modelling system, based on the Regional Ocean Modelling System (ROMS), consists in a set of nested domains using data from CMEMS-IBI for the initial and open boundary conditions (coarser domain). One full year (2014) of simulation is used to validate the results showing low errors with SST and good agreement with surface currents. Finally, a set of twin numerical experiments during the summer period (when water temperature reaches 28 ˚C) are used to analyse the effects of proposed nature-based interventions. Although these actions modify water temperature in the water column, the decrease in SST is not high enough to avoid high temperatures during some days preventing eventual mussel mortality during summer in the shallowest regions. However, the proposed management actions reveal their effectiveness in diminishing water residence times along the entire bay, thus preventing the inner areas to have low renovation and the corresponding ecological problems.
Brief communication: Solar radiation management not as effective as CO2 mitigation for Arctic sea ice loss in hitting the 1.5 and 2 °C COP climate targets
Authors: Ridley Jeff K. , Blockley Edward W.
Published: October 2018

Abstract. An assessment of the risks of a seasonally ice-free
Arctic at 1.5 and
2.0 ∘C global warming above pre-industrial levels is undertaken
using model simulations with solar radiation management to achieve the
desired temperatures. An ensemble of the CMIP5 model HadGEM2-ES uses solar
radiation management (SRM) to achieve the desired global mean temperatures.
It is found that the risk for a seasonally ice-free Arctic is reduced for a
target temperature for global warming of 1.5 ∘C (0.1 %) compared
to 2.0 ∘C (42 %), in general agreement with other methodologies.
The SRM produced more ice loss, for a specified global temperature, than for
CO2 mitigation scenarios, as SRM produces a higher polar
amplification.
Failed Educational Reform in the New York City School System
Authors: Dupre Andrea
Published: October 2018

Like the horrifying photographs journalists take of the innocent victims of senseless-seeming wars, the article's lens zeroes in on the destruction of a once highly regarded Manhattan high school whose story needs to be told. The article sheds light on what the NYC Department of Education would like to keep buried, the revelation of a shameful mismanagment of a school community by among other things, a misguided pair of principals assigned during the administration of Mayor Michael Bloomberg. The school - unlike those with more economically priveleged student bodies - was rendered powerless by virtue of its demographics and lack of cultural capital.
Introduction: Radical Learning
Authors: Bennett Michael , Chinn Sarah
Published: October 2018

Introduction to Issue 112
Ontología y metafísica: un estudio de la fundamentación kantiana de la ontología, y del sentido de la metafísica en relación a la misma
Authors: López López Alberto
Published: October 2018

Lo que pretendemos en las páginas siguientes es mostrar que la fundamentación kantiana de la ontología tiene como fin la liberación de la posibilidad de lo que kantianamente se denomina “metafísica propiamente dicha”. Para ello nos centraremos, principalmente, en exponer la fundamentación de la ontología que tiene lugar en la Analítica Trascendental de la Crítica de la Razón pura (KrV), ofreciendo posteriormente una visión tanto del lugar sistemático que la ontología, como metafísica general, ocupa en el sistema con respecto a las metafísicas particulares, como de la relación entre ontología y metafísica. El fin de todo ello es desentrañar la significación que en este último término tiene el prefijo “meta-”, y mostrar que para su correcta interpretación se precisa de una distinción de sentidos del ser, a saber, del ser de lo sensible (ser como fenómeno) y del ser de lo suprasensible (ser como noúmeno), como doble régimen semántico para una gramática de la naturaleza y de la libertad.
"Vivir en medio del hielo". Resistencia y escepticismo en "El Anticristo”
Authors: Nájera Pérez Elena
Published: October 2018

El presente artículo tiene como objetivo reconstruir la ética de la resistencia que Nietzsche propone en El Anticristo partiendo de la imagen que se ofrece en el prólogo a modo de declaración de intenciones: “preferible vivir en medio del hielo”. Dicha ética le exige al individuo la superación de la psicología de la convicción o de la fe y recurre, como método, a la Filología entendida como “ephexis en la interpretación”. La apropiación nietzscheana de ese término procedente del pirronismo obliga a medir la utilidad de las enseñanzas escépticas para un individuo que aspira a autorrealizarse, a llegar a ser el que es. Con este fin ha de poner entre paréntesis los lugares comunes y asegurarse una posición hermenéutica propia que quiere evitar la des-simismación (Entselbstung) y que renuncia, por ello, a implicarse en la rutina democrática de las sociedades modernas. En sintonía con la sensibilidad pirrónica que anima a cultivar la distancia y la indiferencia, se acabará mostrando, en primer lugar, que Nietzsche se dirige exclusivamente a una comunidad de lectores afines y que, en segundo lugar, suspende la vocación política de su propuesta.
"Díaita": Estilo de vida y alteridad en el Sócrates de Jenofonte”
Authors: Sierra Martín César
Published: October 2018

En el presente artículo analizaremos el estilo de vida atribuido a Sócrates por Jenofonte. El trabajo parte de la definición de conceptos propios de la medicina como díaita o dýnamis desde los pitagóricos y los presocráticos hasta el Corpus Hippocraticum. A continuación, estudiaremos la influencia de estas ideas en la construcción de un modelo universal de virtud y liderazgo en torno a Sócrates y otras figuras.
Facework: trabajo digital, redes sociales y nueva servidumbre
Authors: Lara Rodríguez Ángel Luis
Published: October 2018

Las redes sociales digitales constituyen un escenario productivo que modifica las pautas convencionales de comprensión del fenómeno del trabajo, al tiempo que afecta decisivamente a algunas de las concepciones más tradicionales acerca de la economía política. Localizando nuestra atención en la red social Facebook, analizaremos la emergencia de nuevos sujetos productivos que habitan una pauta de acumulación de capital que descansa sobre la subsunción integral de la vida en el trabajo. A través del análisis concreto de algunas de las pautas fundamentales en la conversión del conjunto de la vida en esfera productiva, trazaremos las coordenadas de una nueva servidumbre que, a partir de la naturaleza omnipresente y ubicua de los modos de trabajo analizados, nos pone sobre la pista de la necesidad de una redefinición del fenómeno de la explotación en nuestros días.
Tiempos y utilidades. Narrativa de los trabajadores agrícolas en torno al tiempo de ocio
Authors: Ortiz García Pilar
Published: October 2018

Esta investigación se realiza en el municipio de la Vega Alta de la Región de Murcia y pretende comprender los significados del uso social del tiempo no productivo asociado a las labores agrícolas. El estudio aborda los significados del uso del tiempo de ocio como parte del proceso de producción: la centralidad de esta actividad como contrapunto del tiempo de trabajo; la disponibilidad sobre el uso de este tiempo y su capacidad para generar identidades sociales/grupales. Las premisas teóricas de partida arrojan luz a unas actividades que van más allá del mero tiempo de descanso. La metodología cualitativa se sirve del análisis de las narraciones de los sujetos para reflexionar sobre el sentido del ocio/tiempo no productivo y sus utilidades
Undergraduates’ Academic Performance, Self-Esteem and Perceived Social Support as Determinants of Perceived Stress
Authors: Keat Kenny Lau Wee , Chin Wong Siew , Seong Lim Chui
Published: October 2018

The aim of current paper is to investigate the relationships between academic performance, self-esteem, perceived social support and perceived stress among the undergraduates in both Malaysian public and private universities. Research data is gathered from a sample of 144 of undergraduates from public and private universities in Malaysia. Partial Least Squares Structural Equation Modelling (PLS-SEM) is employed to examine the influences of academic performance, self-esteem, perceived social support and perceived stress among the undergraduates. The results demonstrate that self-esteem and perceived social support are viewed as potential predictors of perceived stress among undergraduates.  However, there is no significant relationship between academic performance and perceived stress. Future researchers are suggested to conduct similar researches in qualitative or experimental setting in order to minimize personal bias in a longitudinal design. Current paper provides new in-depth and practical implications to all parties to pay attention in efforts to improve undergraduate’s well-being and achievement in their tertiary education stage. This paper offers new insight into the predicting factors of perceived stress among undergraduates in Malaysian context.
La infancia y la adolescencia como noticia en El Salvador
Authors: Calles Minero Camila
Published: October 2018

Solamente el 7 % de las noticias que se publican en la prensa, la radio y la televisión salvadoreñas se relacionan con la infancia, la adolescencia y la juventud. Este artículo se basa en una investigación realizada en 2012 y en la que se hizo un análisis de contenido a 292 textos informativos publicados entre junio y julio de ese año. El estudio establece que cuando en los medios se escribe de niños, niñas y adolescentes se hace únicamente de manera descriptiva sin profundizar en la temática abordada; no hay planteamientos positivos ni propositivos para solucionar las problemáticas; la información se escribe sin contexto; los textos informativos sobre este grupo poblacional no tienen mucha importancia dentro de los medios, pues solo un mínimo porcentaje de ellos aparece en las portadas o titulares. La investigación buscó analizar el tratamiento periodístico en los temas relacionados con la infancia y la adolescencia para conocer el panorama establecido por los medios de comunicación en esta temática.Entorno, agosto 2013, número 53: 76-85
San Alejo, La Unión : imaginarios, memoria colectiva y discursos de la herencia afrodescendiente
Authors: Erquicia Cruz José Heriberto , Herrera Reina Martha Marielba , López Wolfgang Effenberger
Published: October 2018

El último censo nacional de población, llevado a cabo en 2007 en El Salvador, enumeró un total de 7.441 salvadoreños identificados como “negros de raza”. Dicho conteo muestra la existencia de una comunidad afrosalvadoreña que se niega a desaparecer, a pesar de las décadas de rechazo de la que ha sido objeto, como colectividad étnica, por parte del Estado salvadoreño. Si bien el proyecto de ‘blanqueamiento’ mental, social y cultural se desarrolló con éxito, en muchos poblados del territorio salvadoreño, como San Alejo, en el departamento de La Unión, la población reconoce desde un mundo subalterno la presencia de afrodescendientes, evidenciándolos en la tradición oral, la religiosidad y la mitología, las cuales sustentan el arribo y distribución geográfica de los afrodescendientes en la zona y sus alrededores. Esta presencia étnica está generalmente asociada a agentes negativos y a una simbolización originada desde la época colonial, que se ha mantenido vigente en el imaginario social no solo de San Alejo, sino de muchos poblados del territorio salvadoreño.Entorno, agosto 2013, número 53: 104-113
Gender, Politics, and Participation: The Contests of Autobiographical Writings in Poland
Authors: Huechtker Dietlind
Published: October 2018

This article discusses the connections between gender, politics of participation and of truth through the lens of life stories. They take as an example the contests of autobiographical writing which took place in Poland between the two World Wars. Poland after the First World War can be a good example to analyze the social and political meanings of participation, because it was a newly founded state with a huge tradition in autobiographical writing.
Introduction: GENDER AND POLITICS IN AUTO/BIOGRAPHIES
Authors: Ribberink Anneke , Kinnunen Tiina , Niskanen Kirsti , Schaser Angelika
Published: October 2018

Politicians all over Europe used to write about their lives, and keep doing so. Like other well-known persons they are “unusual biographical subjects”, because the biographical activity concerning their lives often starts while they are still alive. (Frank 1999). On the one hand, classical autobiographies written by politicians themselves (and their co-authors or ghost-writers) are published widely and are not only an important part of the memory politics and the construction of national history, but also a contribution to the stabilization of gender conceptions.(Depkat 2014, p .247-265; Ulbrich, Jancke and Bosch 2013, p. 5). Often the (auto)biographers intend to contribute to political and historical analyses. On the other hand, life writing has changed and diversified rapidly during the 20th century. The widespread desire for authenticity and truth seems to be enormous, so we can see a process of democratization, including  a change of the concepts of private and public spheres. Nowadays everybody is entitled to present his or her life in public.(Ulbrich, Jancke and Bosch 2013, p.5). Life writing took place not only in hard copy, but in many different media, like radio, film, tv, blogs, facebook and other new social media. So it seems a good moment to look at the (auto)biographies and memoirs in the political area during the 20th and the beginning of the 21th century.
Internal Relationship Marketing and Job Performance: A Theoretical Analysis
Authors: Amine Meryem El Alaoui , Ouhna Laila
Published: October 2018

Human resources are considered as one of the important intangible resources of company composed mainly of employees' knowledge, skills and attitudes. When human capital is scarce, precious and difficult to imitate, it can be a source of sustainable competitive advantage. Internal Relationship Marketing (IRM) acts in this sense. It is considered as a process of creating, developing and maintaining sustainable relationships between the company and its employees. In this context, and through an analysis of the existing literature in this field, we will try to study the effects of IRM on the employee job performance. The main results of this work are that the IRM, through its relational determinants namely: communication, organizational trust, organizational commitment and job satisfaction, help improve employee job performance and more precisely task performance and contextual performance. This study wraps up by a proposal of a conceptual model, linking the different components of our research.
Examining the Attacks After the 20th Scores in Volleyball According to Nationality and Positions
Authors: Akarcesme Cengiz , Sahin Muhammed , Varol Yaprak Kalemoğlu , Colakoglu Filiz Fatma
Published: October 2018

The most efficient technique of scoring in volleyball is possible to be mentioned as attack. The numbers of efficient attacks performed after the 20th scores during the match are more important, and therefore this period should be managed more elaborately in terms of the technique and tactic. Therefore, it is considered that players’ presenting more productive performances with the drills related to the match after the trainings will be more efficient upon winning the match.

The purpose of this study was to investigate the attacks performed after the 20th scores in 2017-2018 Volleyball Sultans League session according to the nationalities and positions. The study included totally 124 female players with natives (n=86) and foreigners (n=38) from 12 teams between 26 and 30 years old (28.25±1,62).  The numbers of the attacks performed after the 20th scores of 17.918 rallies in 496 sets (except from the 5th set) of 125 matches played by 12 teams during the session were evaluated. All matches were recorded with a video recorder by the researcher. The videos were analyzed by the experts in 3 repetitions. Attack errors, blocked attack, bad attacks, good attacks, numbers of attacks, coverage and totals numbers of attacks performed after the 20th scores during the match were recorded in numbers. Lilliefors Kolmogorov-Smirnov Test indicated whether the study data were appropriate for the normal distribution or not (p<.05). In data analysis, descriptive statistics such as number, percentage, arithmetic average and standard deviation were used; and Independent Samples T-Test and One-Way Variance Analysis (One-Way ANOVA) were used for determining the difference between dependent and independent variables. Tukey HSD Post-Hoc test was performed for finding among which groups there were differences between the units in one-way variance analysis (ANOVA). While interpreting the data, 0.01 and 0.05 were accepted as the level of significance. The research data were analyzed using SPSS 21 statistical software.

As result of the findings obtained in the study, it was determined that there were significant differences in whole attacks performed by the players in terms of nationalities and positions (p<0.05). In conclusion, because the 20th scores are referred the critic period called as the golden scores, foreigners and opposite spiker’s that had high level conditional abilities for winning had more attacks.
Análise da qualidade do sinal de internet de banda larga móvel de empresas de telecomunicações: Estudo de caso na região Central de Porto Alegre
Authors: Barão Maurício De Azambuja , Albano Filipe De Medeiros , Foiatto Noara , Pizzolato Morgana , Bittencourt Hélio Radke
Published: October 2018

Com o avanço da internet móvel torna-se necessário uma avaliação da qualidade técnica dos serviços prestados pelas operadoras de telefonia celular visando verificar se os requisitos regulamentares são efetivamente cumpridos. Este trabalho apresenta uma proposta para avaliar a qualidade técnica do sinal da internet 3G na região central de Porto Alegre utilizando dois parâmetros como referência: nível de sinal e taxa de download. Utilizou-se um sistema de medição para a coleta dos dois parâmetros selecionados, avaliando também quatro operadoras de telefonia celular em cinco bairros distintos. Com a aplicação dos testes de Kruskal-Wallis e ANOVA verificou-se que não existem diferenças significativas entre as operadoras e os bairros analisados, de acordo com o mapeamento geográfico proposto. Todas as operadoras atenderam o valor mínimo estipulado pela legislação, entretanto nenhuma delas chegou ao nível de sinal e taxa de download nominal que faz parte do plano contratado.
Tendências na gestão de projetos, desafios e impactos no Campo
Authors: Campos Luany Maria Maria Gondim , Marinho Marcelo Luiz Monteiro
Published: October 2018

No mundo moderno, o conceito de gestão de projetos torna-se cada vez mais importante, assim como as mudanças que acontecem na área, as quais chamamos de tendências. Essas tendências se concentram em questões de gestão estratégica, criação de valor para as partes interessadas, questões técnicas, necessidade da multidisciplinaridade e questões quanto a estratégias organizacionais. O presente artigo apresenta uma revisão sistemática da literatura sobre as tendências na gestão de projetos, com o objetivo de apresentar de forma clara quais as principais tendências, seus impactos no gerenciamento de projetos e os desafios a serem encarados pelos profissionais da área a partir delas.
Mutilação Feminina e Direitos Humanos
Authors: Lira Luzia Andressa Feliciano de , Silva Junior Walter Nunes da
Published: October 2018

Analisa se a prática da mutilação feminina é compatível com a proteção universal dos direitos humanos, mormente quanto ao direito à liberdade (inclusive religiosa). Para isso, aborda preceitos doutrinários fundamentais para a compreensão do universalismo. Apresenta os preceitos essenciais para a compreensão do direito à liberdade (individual e religiosa) previsto na Declaração Universal dos Direitos Humanos. Expõe a prática de circuncisão feminina, a partir da análise do livro “A virgem na jaula: Um apelo à razão”. Após a abordagem desses pontos, defende a necessidade de preservação do direito à liberdade individual em detrimento da liberdade de conduta (incluída na liberdade religiosa), bem como a incompatibilidade da mutilação feminina com o sistema de valores e direitos proclamados na Declaração Universal dos Direitos Humanos. Apresenta, por fim, uma síntese conclusiva.
La Justificación de la Aplicación Del Dolor en Las Sanciones Penales.
Authors: Alves Silva Fernando Ponçano
Published: October 2018

En este artículo se pretende analizar algunas razones por las cuáles se sigue utilizando el dolor en la aplicación de las sanciones penales, actual e históricamente. Aunque lo nieguen, los operadores del sistema penal trabajan básicamente sobre el dolor y el hacer sufrir. Por este motivo, se hace un estudio sobre los conceptos de ‘dolor’, ‘sufrimiento’, ‘vulnerabilidad’ y sus relaciones con el Derecho, sobre todo el Derecho Penal. De esta forma, se intenta iluminar y comprender mejor la lógica (si es que la hay) por detrás de la justificación del uso diseminado del dolor en las sanciones penales.