bluuebunny/crossref_metadata_2025 huggingface dataset:
Invariant Graph Partition Comparison Measures
Authors: Ball Fabian , Geyer-Schulz Andreas
Published: October 2018

Symmetric graphs have non-trivial automorphism groups. This article starts with the proof that all partition comparison measures we have found in the literature fail on symmetric graphs, because they are not invariant with regard to the graph automorphisms. By the construction of a pseudometric space of equivalence classes of permutations and with Hausdorff’s and von Neumann’s methods of constructing invariant measures on the space of equivalence classes, we design three different families of invariant measures, and we present two types of invariance proofs. Last, but not least, we provide algorithms for computing invariant partition comparison measures as pseudometrics on the partition space. When combining an invariant partition comparison measure with its classical counterpart, the decomposition of the measure into a structural difference and a difference contributed by the group automorphism is derived.
A Low Rank Channel Estimation Scheme in Massive Multiple-Input Multiple-Output
Authors: Shahjehan Waleed , Shah Syed Waqar , Lloret Jaime , Leon Antonio
Published: October 2018

Aiming at the problem of computational complexity of channel estimation, this paper proposes a low-complexity block matching pursuit (BMP) algorithm based on antenna grouping and block sparsity for frequency division duplex (FDD) massive Multiple-input Multiple-output orthogonal frequency division multiplexing (OFDM) systems. The system coherence time may be exceeded as a result of time consumption when adopting an orthogonal pilot symbol in the time domain. To solve this problem, an antenna grouping transmission scheme is proposed to reduce the total channel estimation time by sacrificing the observed data length. The simulation results show that the proposed BMP algorithm has good anti-noise performance, and it can accurately determine the non-zero position of the sparse vector and adaptively determine the sparsity of the channel, which effectively translates to improved channel estimation performance and better overall system performance than the existing algorithms.
The Quaternionic Commutator Bracket and Its Implications
Authors: Arbab Arbab I. , Al Ajmi Mudhahir
Published: October 2018

A quaternionic commutator bracket for position and momentum shows that the quaternionic wave function, viz. ψ ˜ = ( i c ψ 0 , ψ → ) , represents a state of a particle with orbital angular momentum, L = 3 ℏ , resulting from the internal structure of the particle. This angular momentum can be attributed to spin of the particle. The vector ψ → , points in an opposite direction of L → . When a charged particle is placed in an electromagnetic field, the interaction energy reveals that the magnetic moments interact with the electric and magnetic fields giving rise to terms similar to Aharonov–Bohm and Aharonov–Casher effects.
Extension of Eigenvalue Problems on Gauss Map of Ruled Surfaces
Authors: Choi Miekyung , Kim Young Ho
Published: October 2018

A finite-type immersion or smooth map is a nice tool to classify submanifolds of Euclidean space, which comes from the eigenvalue problem of immersion. The notion of generalized 1-type is a natural generalization of 1-type in the usual sense and pointwise 1-type. We classify ruled surfaces with a generalized 1-type Gauss map as part of a plane, a circular cylinder, a cylinder over a base curve of an infinite type, a helicoid, a right cone and a conical surface of G-type.
Exchange Protein Directly Activated by cAMP Modulates Ebola Virus Uptake into Vascular Endothelial Cells
Authors: Drelich Aleksandra , Judy Barbara , He Xi , Chang Qing , Yu Shangyi , Li Xiang , Lu Fanglin , Wakamiya Maki , Popov Vsevolod , Zhou Jia , Ksiazek Thomas , Gong Bin
Published: October 2018

Members of the family Filoviridae, including Ebola virus (EBOV) and Marburg virus (MARV), cause severe hemorrhagic fever in humans and nonhuman primates. Given their high lethality, a comprehensive understanding of filoviral pathogenesis is urgently needed. In the present studies, we revealed that the exchange protein directly activated by cAMP 1 (EPAC1) gene deletion protects vasculature in ex vivo explants from EBOV infection. Importantly, pharmacological inhibition of EPAC1 using EPAC-specific inhibitors (ESIs) mimicked the EPAC1 knockout phenotype in the ex vivo model. ESI treatment dramatically decreased EBOV infectivity in both ex vivo vasculature and in vitro vascular endothelial cells (ECs). Furthermore, postexposure protection of ECs against EBOV infection was conferred using ESIs. Protective efficacy of ESIs in ECs was observed also in MARV infection. Additional studies using a vesicular stomatitis virus pseudotype that expresses EBOV glycoprotein (EGP-VSV) confirmed that ESIs reduced infection in ECs. Ultrastructural studies suggested that ESIs blocked EGP-VSV internalization via inhibition of macropinocytosis. The inactivation of EPAC1 affects the early stage of viral entry after viral binding to the cell surface, but before early endosome formation, in a phosphatidylinositol-4,5-bisphosphate 3-kinase (PI3K)-dependent manner. Our study delineated a new critical role of EPAC1 during EBOV uptake into ECs.
Current Perspectives on High-Throughput Sequencing (HTS) for Adventitious Virus Detection: Upstream Sample Processing and Library Preparation
Authors: Ng Siemon , Braxton Cassandra , Eloit Marc , Feng Szi , Fragnoud Romain , Mallet Laurent , Mee Edward , Sathiamoorthy Sarmitha , Vandeputte Olivier , Khan Arifa
Published: October 2018

A key step for broad viral detection using high-throughput sequencing (HTS) is optimizing the sample preparation strategy for extracting viral-specific nucleic acids since viral genomes are diverse: They can be single-stranded or double-stranded RNA or DNA, and can vary from a few thousand bases to over millions of bases, which might introduce biases during nucleic acid extraction. In addition, viral particles can be enveloped or non-enveloped with variable resistance to pre-treatment, which may influence their susceptibility to extraction procedures. Since the identity of the potential adventitious agents is unknown prior to their detection, efficient sample preparation should be unbiased toward all different viral types in order to maximize the probability of detecting any potential adventitious viruses using HTS. Furthermore, the quality assessment of each step for sample processing is also a critical but challenging aspect. This paper presents our current perspectives for optimizing upstream sample processing and library preparation as part of the discussion in the Advanced Virus Detection Technologies Interest group (AVDTIG). The topics include: Use of nuclease treatment to enrich for encapsidated nucleic acids, techniques for amplifying low amounts of virus nucleic acids, selection of different extraction methods, relevant controls, the use of spike recovery experiments, and quality control measures during library preparation.
Size-selected Fe3O4–Au hybrid nanoparticles for improved magnetism-based theranostics
Authors: Efremova Maria V , Nalench Yulia A , Myrovali Eirini , Garanina Anastasiia S , Grebennikov Ivan S , Gifer Polina K , Abakumov Maxim A , Spasova Marina , Angelakeris Makis , Savchenko Alexander G , Farle Michael , Klyachko Natalia L , Majouga Alexander G , Wiedwald Ulf
Published: October 2018

Size-selected Fe3O4–Au hybrid nanoparticles with diameters of 6–44 nm (Fe3O4) and 3–11 nm (Au) were prepared by high temperature, wet chemical synthesis. High-quality Fe3O4 nanocrystals with bulk-like magnetic behavior were obtained as confirmed by the presence of the Verwey transition. The 25 nm diameter Fe3O4–Au hybrid nanomaterial sample (in aqueous and agarose phantom systems) showed the best characteristics for application as contrast agents in magnetic resonance imaging and for local heating using magnetic particle hyperthermia. Due to the octahedral shape and the large saturation magnetization of the magnetite particles, we obtained an extraordinarily high r2-relaxivity of 495 mM−1·s−1 along with a specific loss power of 617 W·gFe−1 and 327 W·gFe−1 for hyperthermia in aqueous and agarose systems, respectively. The functional in vitro hyperthermia test for the 4T1 mouse breast cancer cell line demonstrated 80% and 100% cell death for immediate exposure and after precultivation of the cells for 6 h with 25 nm Fe3O4–Au hybrid nanomaterials, respectively. This confirms that the improved magnetic properties of the bifunctional particles present a next step in magnetic-particle-based theranostics.
PROBABILITY DENSITY EVOLUTION FOR TIME-VARYING RELIABILITY ASSESSMENT OF WING STRUCTURES
Authors: Afshari ajad Saraygord , Pourtakdoust Seid H.
Published: October 2018

Reliability evaluation is a key factor in serviceability and safety analysis of air vehicles. Structural health monitoring methods have grown to a degree of maturity in many industries. However, there is a challenging interest to tie in SHM with reliability assessment. In this respect, consideration of stochastic structural dynamics with SHM data and random loadings opens a new chapter in failure prevention. The current study focuses on the stochastic behavior of structures as a way to relate SHM data with reliability. In this respect, uncertain factors such as atmospheric turbulence, structural parameters, and sensor outputs are considered in the process of reliability assessment. Firstly, an experimental evaluation is conducted using a simple cantilevered beam. Subsequently, system identification is weaved in with a probability density evolution equation for calculating the reliability of a wing structural component. Numerical simulations demonstrate that structural reliability of a typical WSC can be effectively evaluated. The proposed scheme paves the way for new SHM research topics such as online life prediction and reliability based failure prevention.
EVOLUTION OF CORROSION OF CIVIL AIRCRAFT BASED ON IMPROVED GREY MODELS
Authors: Wang Yiqiang , Jia Baohui
Published: October 2018

Structure corrosion is one of the most common damages affecting the structural integrity of the aging civil aircraft. Three grey models were applied for predicting the corrosion evolution during aircraft maintenance checks. The developed models include the basic GM (1, 1) model and two improved models with the initial condition optimized by linear transformation and partial differential methods, respectively. Both improved models show better quantitative agreement with the existing data, while the model using the partial differential method exhibits the highest prediction accuracy amongst the three models presented above. Such models can also be used on the structure of other complex equipment to improve the efficiency of preventive maintenance.
Exact Solution for a Black Hole Embedded in a Nonstatic Dust-filled Universe
Authors: Kopteva E. , Jalůvková P. , Bormotova I. , Stuchlík Z.
Published: October 2018

An exact solution of the Lemaître–Tolman–Bondi class is investigated as a possible model of the Schwarzschild-like black hole embedded in a nonstatic dust-filled universe for the three types of spatial curvature. The solution is obtained in comoving coordinates by means of the mass function method. It is shown that the central part of space contains a Schwarzschild-like black hole. The R–T structure of the resulting spacetime is built. It is shown that the solution includes both the Schwarzschild and Friedmann solutions as its natural limits. The geodesic equations for test particles are analyzed. The particle observable velocities are found. The trajectories of the test particles are built from the point of view of both comoving and distant observers. For the distant observer, the results coincide with the Schwarzschild picture within a second-order accuracy near the symmetry center.
Formation and Eruption of an Active Region Sigmoid. II. Magnetohydrodynamic Simulation of a Multistage Eruption
Authors: Jiang Chaowei , Feng Xueshang , Hu Qiang
Published: October 2018

Solar eruptions, mainly eruptive flares with coronal mass ejections, represent the most powerful drivers of space weather. Due to the low plasma-β nature of the solar corona, solar eruption has its roots in the evolution of the coronal magnetic field. Although various theoretical models of the eruptive magnetic evolution have been proposed, they still oversimplify the realistic process in observation, which shows a much more complex process due to the invisible complex magnetic environment. In this paper, we continue our study of a complex sigmoid eruption in solar active region 11283, which is characterized by a multipolar configuration embedding a null-point topology and a sigmoidal magnetic flux rope. Based on extreme ultraviolet observations, it has been suggested that a three-stage magnetic reconnection scenario might explain the complex flare process. Here we reproduce the complex magnetic evolution during the eruption using a data-constrained high-resolution magnetohydrodynamic (MHD) simulation. The simulation clearly demonstrates three reconnection episodes, which occurred in sequence in different locations in the corona. Through these reconnections, the initial sigmoidal flux rope breaks one of its legs, and quickly gives birth to a new tornado-like magnetic structure that is highly twisted and has multiple connections to the Sun due to the complex magnetic topology. The simulated magnetic field configuration and evolution are found to be consistent with observations of the corona loops, filaments, and flare ribbons. Our study demonstrates that significant insight into a realistic, complex eruption event can be gained by a numerical MHD simulation that is constrained or driven by observed data.
Minimum Orbital Period of Precataclysmic Variables
Authors: Nelson L. , Schwab J. , Ristic M. , Rappaport S.
Published: October 2018

More than 20 precataclysmic variable (pre-CV) systems have now been discovered with very short orbital periods ranging from 250 minutes down to 68 minutes. A pre-CV consists of a white dwarf (WD) or hot subdwarf primary and a low-mass companion star, where the companion star has successfully ejected the common envelope (CE) of the primary progenitor, but mass transfer from the companion star to the primary has not yet commenced. In this short-period range, a substantial fraction of the companion stars are likely to be either brown dwarfs with masses ≲0.07 M
⊙ or stars at the bottom of the main sequence (MS; ≲0.1 M
⊙). The discovery of these short-period pre-CVs raises the question, what is the shortest possible orbital period of such systems? We ran 500 brown dwarf/low-mass MS models with Modules for Experiments in Stellar Astrophysics that cover the mass range from 0.002 to 0.1 M
⊙. We find that the shortest possible orbital period is 40 minutes, with a corresponding brown dwarf mass of 0.07 M
⊙ for an age equal to a Hubble time. We discuss the past evolution of these systems through the CE and suggest that many of the systems with present-day WD primaries may have exited the CE with the primary as a helium-burning hot subdwarf. We also characterize the future evolution of the observed systems, which includes a phase as CVs below the conventional period minimum.
The Extraordinary Outburst in the Massive Protostellar System NGC 6334I-MM1: Flaring of the Water Masers in a North–South Bipolar Outflow Driven by MM1B
Authors: Brogan C. L. , Hunter T. R. , Cyganowski C. J. , Chibueze J. O. , Friesen R. K. , Hirota T. , MacLeod G. C. , McGuire B. A. , Sobolev A. M.
Published: October 2018

We compare multi-epoch sub-arcsecond Very Large Array imaging of the 22 GHz water masers toward the massive protocluster NGC 6334I observed before and after the recent outburst of MM1B in (sub)millimeter continuum. Since the outburst, the water maser emission toward MM1 has substantially weakened. Simultaneously, the strong water masers associated with the synchrotron continuum point source CM2 have flared by a mean factor of 6.5 (to 4.2 kJy) with highly blueshifted features (up to 70 km s−1 from the LSR) becoming more prominent. The strongest flaring water masers reside 3000 au north of MM1B and form a remarkable bow shock pattern whose vertex coincides with CM2 and tail points back to MM1B. Excited OH masers trace a secondary bow shock located ∼120 au downstream. Atacama Large Millimeter Array images of CS (6–5) reveal a highly collimated north–south structure encompassing the flaring masers to the north and the nonflaring masers to the south seen in projection toward the MM3-UCHII region. Proper motions of the southern water masers over 5.3 years indicate a bulk projected motion of 117 km s−1 southward from MM1B with a dynamical time of 170 years. We conclude that CM2, the water masers, and many of the excited OH masers trace the interaction of the high-velocity bipolar outflow from MM1B with ambient molecular gas. The previously excavated outflow cavity has apparently allowed the radiative energy of the current outburst to propagate freely until terminating at the northern bow shock where it strengthened the masers. Additionally, water masers have been detected toward MM7 for the first time, and a highly collimated CS (6–5) outflow has been detected toward MM4.
Discovery of the Luminous, Decades-long, Extragalactic Radio Transient FIRST J141918.9+394036
Authors: Law C. J. , Gaensler B. M. , Metzger B. D. , Ofek E. O. , Sironi L.
Published: October 2018

We present the discovery of a slowly evolving, extragalactic radio transient, FIRST J141918.9+394036, identified by comparing a catalog of radio sources in nearby galaxies against new observations from the Very Large Array Sky Survey. Analysis of other archival data shows that FIRST J141918.9+394036 faded by a factor of ∼50 over 23 years, from a flux of ∼26 mJy at 1.4 GHz in 1993 to an upper limit of 0.4 mJy at 3 GHz in 2017. FIRST J141918.9+394036 is likely associated with the small star-forming galaxy SDSS J141918.81+394035.8 at a redshift z = 0.01957 (d = 87 Mpc), which implies a peak luminosity νL

ν
 ≳ 3 × 1038 erg s−1. If interpreted as an isotropic synchrotron blast wave, the source requires an explosion of kinetic energy ∼1051 erg some time prior to our first detection in late 1993. This explosion is most likely associated with a long gamma-ray burst (GRB), but the radio source could also be interpreted as the nebula of a newly born magnetar. The radio discovery of either of these phenomena would be unprecedented. Joint consideration of the event light curve, host galaxy, lack of a counterpart GRB, and volumetric rate suggests that FIRST J141918.9+394036 is the afterglow of an off-axis (“orphan”) long GRB. The long time baseline of this event offers the best available constraint in afterglow evolution as the bulk of shock-accelerated electrons become non-relativistic. The proximity, age, and precise localization of FIRST J141918.9+394036 make it a key object for understanding the aftermath of rare classes of stellar explosion.
Groundwater quality dataset of Semarang area, Indonesia
Authors: Irawan Dasapta , Putranto Thomas , Darul Achmad
Published: October 2018

The regional environmental changes are affecting groundwater ecosystems in Semarang area. The development of new settlements, industrial complexes, and trade centers have degraded the groundwater setting of the city, which serves as the capital of Central Java Province. This has led us to compile several groundwater quality dataset that have been taken from 1992 to 2007. Our original motivation is to come up with an open dataset that can be used as the baseline for groundwater monitoring.

The dataset consists of 58 samples were taken in 1992, 1993, 2003, 2006, and 2007 using well point data from several reports from Ministry of Energy and Mineral Resources, engineering consultants, as well as from researchers from Universitas Diponegoro and Institut Teknologi Bandung. Each site has a set of 20 physical and chemical variables.
Au Liban, l’espoir est souvent déçu
Authors: Khayat Tristan
Published: October 2018

Avec ses frontières perméables avec la Syrie, une bourgeoisie encore fortunée et des ressortissants dans le monde entier, le Liban est un point de chute ou un point de passage de plus en plus utilisé par les migrants venant de toute l’Asie.
Vers un renouveau du nouvel ordre mondial ?
Authors: Hafez Ziad
Published: October 2018

Le XXIe siècle a débuté le 11 septembre 2001 à 8h45 a.m. quand le vol 13 de l’American Airlines percuta une première tour à Manhattan. Le choc des attaques contre les deux tours géantes du World Trade Center et le Pentagone a quasiment détruit une vision du monde dans laquelle s’étaient complu les Etats-Unis et l’Occident. L’éditorial de l’hebdomadaire The Economist a bien saisi la portée des attaques en titrant sur sa couverture que le monde avait changé.
Après la séparation, que devient la parentalité ? De la collaboration à la guerre
Authors: Delage Michel
Published: October 2018

Les séparations conjugales sont aujourd’hui fréquentes. Elles mettent plus ou moins à mal la parentalité. Trois cas de figures peuvent être schématiquement décrits : Quand la séparation demeure compatible avec l’exercice d’une coparentalité suffisamment collaborative. Quand la séparation est associée à une parentalité conflictuelle mais que des négociations demeurent possibles. Quand la séparation s’accompagne d’une guerre impliquant l’acteur judiciaire, source alors de souffrances pouvant altérer gravement le développement des enfants. Des propositions sont faites ici pour développer une collaboration contrainte.
S’attaquer au conflit parental après la séparation : deux propositions pour sortir de l’impasse
Authors: Denis Catherine , Regout Lidvine
Published: October 2018

Dans le champ de l’Aide et de la Protection de la Jeunesse, un travail familial sous mandat peut être envisagé lorsqu’un conflit grave entre des parents séparés met en danger les enfants. Dans ce travail de nombreux pièges guettent les intervenants et peuvent les envoyer dans une impasse. Dans cet article, sont présentées deux modalités d’interventions spécifiques qui ont été développées en réaction aux difficultés rencontrées. La première concerne un travail avec les ex-conjoints sur leur histoire de couple. La seconde est indiquée dans les situations où un enfant a choisi le camp d’un parent contre l’autre.
De la séparation à la recomposition. Temps, rythmes et légitimités
Authors: Haxhe Stéphanie , Montulet Fanny
Published: October 2018

Dans une famille, on sait combien prendre soin des enfants, du couple, de soi-même, du travail, des amis et de la famille élargie appelle des compétences d’équilibriste afin qu’aucun espace ne souffre de trop peu d’attention, les enfants en bas âge réclamant une certaine priorité. Après une séparation, la chose n’est pas plus simple et peut même se compliquer lorsqu’une forme de soulagement est attendue. Dans le présent article, deux facteurs sont pris en considération, le temps et le concept de légitimité, pour tenter de comprendre et aider les familles dans le moment délicat entre séparation et recomposition. Le rythme des enfants est souvent différent de celui des parents. Lorsque l’écart des rythmes vient heurter les besoins des uns ou des autres, il crée un sentiment d’injustice et présente le risque d’une légitimité destructive.
Être co-parents après la séparation conjugale : approche psycho-sociale et développementale des expériences des parents et des beaux-parents
Authors: Rouyer Véronique , Baude Amandine , Biargues-Joubert Alexandra , Monribot Manon
Published: October 2018

Dans cet article, nous nous proposons d’explorer les expériences coparentales des parents et des beaux-parents dans le contexte de familles recomposées, en considérant les dimensions de soutien, de conflit, d’engagement et d’accord éducatif. Trois couples (trois parents et trois beaux-parents) ont participé au recueil des données par le biais d’entretiens semi-directifs. Les résultats indiquent des configurations coparentales différenciées selon les contextes de séparation conjugale et de recomposition familiale, ainsi que des dynamiques coparentales fonctionnelles entre les parents et les beaux-parents. Il est donc essentiel de ne pas isoler la trajectoire coparentale en recomposition familiale, d’une part des contextes de séparation et de recomposition, et d’autre part des trajectoires individuelles des membres qui composent la famille.
Éloignement géographique et travail de séparation psychique : enjeux et dynamiques des liens familiaux dans les situations de séparations volontaires des hivernages polaires
Authors: Wawrzyniak Michel , Schmit Gérard
Published: October 2018

Les auteurs explorent la dynamique des liens familiaux dans la situation de séparation volontaire des hivernages polaires au long cours. Les enjeux personnels et familiaux présidant à cet éloignement sont nombreux et variés. Cependant, quand l’approche du mythe familial s’avère possible, il devient clair que celui-ci dicte – paradoxalement ? – bien des séparations ré-unissant les familles.
The Spatially Resolved Refractometer
Authors: Burns Stephen A
Published: October 2018

ABSTRACT

PURPOSE: To investigate factors controlling the aberrations of the eye, including accommodation, wavelength, and the apodization of the optics of the eye by cone directional selectivity.

METHODS: We constructed a new implementation of the Spatially Resolved Refractometer (SRR). This is an instrument, based on the Scheiner principle, that allows the rapid psychophysical measurement of the complete wavefront aberrations of the eye. We have investigated both the reproducibility of the measurements, and the effect of static accommodation and wavelength on the wavefront aberrations of the eye. In addition we combined the wave front aberrations with cone photoreceptor directionality to compute the modulation transfer function of the eye, at the retinal level.

RESULTS: The SRR measurements were rapid (4 minutes per measurements, 12 minutes per patient) and reproducible. There are significant changes in wavefront quality with accommodation, with optimal image quality near the resting point of accommodation. Image quality for polychromatic (white) light is strongly affected by both longitudinal and transverse chromatic aberration. Finally, we find that incorporating the effects of cone directionality into the calculation of image quality can increase image quality by up to 50%.

CONCLUSION: Calculation of a simple "optimal surgical shape" for wave-front guided refractive surgery will depend on improved understanding of the interplay between the biological and physical properties of the eye. [J Refract Surg 2000; 16: S566-S569]
Equilíbrios de Nash-Cournot em duopólios com prática de sobrepreço
Authors: Silva Altieres Frances , Fenille Marcio Colombo
Published: October 2018

Este artigo propõe um modelo assimétrico de duopólio em que duas empresas competem na quantidade produzida. A assimetria provém de hipóteses de heterogeneidade de produtos, de diferenciação de custos de produção e de prática de sobrepreço por parte de uma das empresas. Mostra-se que o duopólio apresenta um único equilíbrio de Nash-Cournot, o qual é simétrico se, e somente se, o sobrepreço refere-se essencialmente a repasse dos custos; nos demais casos, embora seja assimétrico, quando o patamar de mercado cresce (indefinidamente), o equilíbrio converge para o cenário em que as duas empresas dividem igualmente a produção e, além disso, a empresa que pratica sobrepreço desfruta de benefício da ordem do fator de sobrepreço acima do benefício da concorrente.
DESIGUALDADE DE RENDA NO MERCADO DE TRABALHO CEARENSE
Authors: Amorim Domingos Isaias Maia , Duarte de Sousa Érico Robsom , Lima Junior Francisco Do O' de
Published: October 2018

Esse artigo apresenta um estudo sobre as desigualdades de rendimentos existentes no mercado de trabalho cearense em 2014. O hiato existente de estudos para um ano tão recente é uma das justificativas para esse trabalho, tendo assim fundamental importância para pesquisas futuras. Em relação a Posição de Ocupação e ao Ramo de Atividade, trabalhando apenas com os indivíduos ocupados, percebe-se uma maior parcela dentro de ocupações sem carteira assinada (64%), sejam eles trabalhadores por conta própria, empregadores ou em subempregos. As mulheres por sua vez apresentam um destaque nos ramos relacionados a Educação, Saúde e Serviços Sociais, ramos esses que ofertam melhores rendimentos há quem possuem melhores níveis educacionais. Conclui-se a existência de desigualdades de rendimentos em todos os níveis educacionais e faixas etárias de forma vertical e horizontal.
The Effect of Heat Treatment on Compression Strength of Recycled AA6061 Aluminium Chips
Authors: Mustapa Mohammad Sukri , Latif Noradila Abdul , Mohd Joharudin Nurul Farahin , Mahzan Shahruddin , Masirin Mohd Idrus Mohd , Hamid Norashikin Abdul
Published: October 2018

Solid state recycling aluminium AA6061 chips by cold compaction is a technique that used lower energy consumption and operating cost compared to the conventional recycling technique by casting. This research is to investigate physical characteristics of the milled recycling aluminium AA6061 according to the change of the time (heat treatment) using the high speed milling process and followed by a cold press forging process. Physical property of the recycled aluminium chip of AA6061 were studied. On the other hand, the results were showing that the porosity and density, and compression is correlated. At 8 hours on variable of quenching have a best value porosity (1.95%), density (2.55 g/cm3) and compression strength (315.19 MPa). While for the variable of aging, the best value of density (2.54 g/cm3) and compression strength (280.76 MPa) is at 10 hours. On porosity the best value is at 8 hours (2.79 %). It must be considered to the density and compression strength. For that, 10 hours were chosen for the best aging time. It can be concluded; the best quenching time is 8 hours and aging time is 10 hours.
High-flow nasal oxygen therapy in acute respiratory failure
Authors: Scala Raffaele
Published: October 2018

High-flow nasal cannula (HFNC) is a new effective device, which is able to deliver oxygen-therapy at a reliable FiO2 but also a certain amount of respiratory assistance; however HFNC could not be defined as a mechanical ventilator. The main physiologic advantage as compared to conventional oxygen therapy (COT) is the capability of HFNC to meet the increased ventilator demand in patients with respiratory distress and therefore reduce the amount of respiratory muscle’s workload. The main clinical advantage over both COT and noninvasive ventilation (NIV) is the greater comfort and acceptability reported by patients. So far there are several indications for HFNC use both in and outside ICU especially for milder hypoxemic spontaneously breathing patients and prevention of extubation failure in intubated patients, as well as palliative care in end stage neoplastic and nonneoplastic respiratory diseases. A large proportion of potential HFNC candidates belongs to advanced age people. Caution should be taken in the selection of the patients, monitoring, escalating treatment and setting of aplication.
Die bybelse beskouing van die mens as eenheid en die betekenis daarvan vir die sielsorg
Authors: Steyn J.
Published: October 2018

No abstract available.
Die "International council of Christian churches" (I.C.C.C.) en sy getuienis in die wêreld
Authors: Buitenweg N.H.
Published: October 2018

No abstract available.
Die gereformeerde ekumeniese sinode
Authors: Van Staden A.J.
Published: October 2018

No abstract available.
Jeug en kerk
Authors: Breedt A.
Published: October 2018

No abstract available.
Die Christologie in die openbaring van Johannes, in hooftrekke beskrywe
Authors: Engelbrecht J.J.
Published: October 2018

No abstract available.
Die betekenis van téleios en sy derivate in die hebreërbrief
Authors: Pelser G.M.M.
Published: October 2018

No abstract available.
Dinâmica temporal da pegada hídrica por cultivar de soja em polo de grãos no Oeste do Pará, Amazônia
Authors: Costa Douglas Cavalcante , Martorano Lucieta Guerreiro , Moraes José Reinaldo da Silva Cabral de , Lisboa Leila Sheila Silva , Stolf Rubismar
Published: October 2018

O objetivo neste trabalho foi analisar a dinâmica temporal da pegada hídrica de oito cultivares de soja, plantadas na região do Oeste do Pará. Foram utilizados dados meteorológicos correspondentes ao período de 2009 a 2014 para calcular as taxas evapotranspiratórias da cultura. Como a Pegada Hídrica é subdividida em verde, azul e cinza e, na região os cultivos não são irrigados contabilizou-se apenas a verde e a cinza. A PHverde foi estimada considerando-se o total de água consumida durante o ciclo de cada cultivar. A PHcinza foi avaliada utilizando como fator contaminante em corpos hídricos o composto nitrato que está presente nos fertilizantes nitrogenados, conforme as concentrações aceitáveis pelo CONAMA 357/2005. Considerou-se dois valores para as doses de N, sendo 30 kg ha-1 com base na adubação descrita na literatura, bem como o N existente nas formulações (2:20:20) dos adubos vendidos na região, sendo 2 kg ha-1 o máximo utilizado na adubação de cobertura. Entre as oito cultivares analisadas, em termos de indicador de baixa pegada hídrica, as cultivares BRS 278 RR; BRS 325 RR e BRS 333 RR foram as mais expressivas no polo de grãos no oeste do Pará, evidenciando o uso eficiente da água disponível em todos os anos/safras analisados. A soja produzida no oeste do Pará possui baixa pegada hídrica cinza. Todavia, os valores de redução da produtividade em anos safra na região comprometem a pegada hídrica verde pela sojicultura na região, evidenciando que esse indicador deve ser analisado considerando as especificidades de cada cultivar de soja. O valor da pegada hídrica total estimada neste trabalho foi inferior aos obtidos na literatura, reforçando a importância de estimar a Pegada Hídrica (PH) como indicador de uso consuntivo de água em cultivos de grãos na Amazônia.
Risk communications and its importance in disaster management
Authors: Gill Brendan Patrick
Published: October 2018

During the onslaught of hurricane Katrina on the gulf coast of the United States in August 2005, local emergency planning officials, state agencies, and federal entities came together to impress upon those still left in the danger zone to evacuate. Unfortunately, more than 100,000 people remained in the danger area because of various reasons. In this piece, the author will examine Protective Action Recommendations, proper and poor risk communications, and the need for emergency management officials to keep the pulse of those that they serve.
Plain language emergency alert codes: The importance of direct impact statements in hospital emergency alerts
Authors: Prickett, MS Kristopher J. , Williams-Prickett, PhD, RN Kay
Published: October 2018

The nature of an emergency is not predictable, and no two emergencies are alike. In response to this unpredictable nature, healthcare facilities across the nation have adopted a system of emergency codes to notify staff of an emergent situation, often without alerting patients and visitors to the crises. However, the system of emergency codes varies significantly within most states and even within healthcare coalition regions. This variation in codes leads to not only the potential for staff confusion, considering many healthcare providers work within multiple healthcare centers, but also decreases the amount of transparency a healthcare center projects to its patients and visitors. The research conducted as part of this study indicated that an overwhelming majority of healthcare professionals would prefer voluntary plain language emergency code standardization to the current individual code systems.
Clinician opioid prescribing practices and patient utilization of prescribed opioids in pediatrics
Authors: Huang, MD, MPH Jeannie S. , Kuelbs, MD Cynthia L.
Published: October 2018

Objective: Little is known regarding clinician prescribing of opioid medications and of patient use of prescribed opioid medications in pediatrics. The authors sought to learn more about pediatric clinician opioid prescribing practices and patient utilization and disposal of prescribed opioids.Design: Cross-sectional, observational study.Setting: Tertiary care pediatric healthcare center.Participants: Pediatric clinicians who prescribe opioid medications and parents of children prescribed an opioid medication.Main Outcome Measures: Clinicians were surveyed about opioid prescribing practices for acute pain management in children, and parents were asked about utilization and disposal of prescribed opioids.Results: Most clinician respondents (64 percent) reported prescribing opioid medications to manage acute pain. The typical length of opioid prescriptions was limited to 7 days (93 percent). Parents reported a high prevalence of leftover opioid medications (86 percent). Most (59 percent) did not dispose of the remaining medication.Conclusions: Targets for intervention to reduce unnecessary opioid exposure in youth are identified.
Evaluation of the oral human abuse potential of Oxycodone DETERx® formulation (Xtampza® ER)
Authors: Meske, PhD Diana , Kopecky, PhD Ernest A. , Passik, PhD Steven , Shram, PhD Megan J.
Published: October 2018

Objective: To further characterize the human abuse potential and pharmacokinetics (PK) of Oxycodone DETERx (Xtampza® ER) after intact and chewed oral administration.Design: Randomized, double-blind, triple-dummy, active- and placebo-controlled, single-dose, six-period, crossover comparison study.Setting: Clinical research unit.Subjects: Adult, nondependent recreational opioid users who liked the effects of crushed immediate-release (IR) oxycodone in solution and were able to differentiate the effects from placebo solution.Interventions: Oral administration of intact Oxycodone DETERx (fasted and fed), chewed Oxycodone DETERx (fasted and fed), crushed IR oxycodone (fasted), and placebo (fed).Main Outcome Measures: Subject ratings (100-point visual analog scales) of Drug Liking (primary measure) and Take Drug Again (key secondary measure).Results: The pharmacodynamic (PD) analysis included 52 subjects who completed the study; the PK analysis included 71 subjects. Compared with crushed IR oxycodone fasted, the least-squares mean maximum effect (Emax) was statistically significant (p < 0.01) for Drug Liking and Take Drug Again, respectively, for chewed Oxycodone DETERx fasted (LS mean difference ± standard error of the mean: 13.1 ± 2.2 and 10.0 ± 3.2 points) and fed (10.9 ± 2.2 and 9.7 ± 3.3 points) and intact Oxycodone DETERx fasted (12.2 ± 2.2 and 9.3 ± 3.3 points) and fed (10.3 ± 2.2 and 9.2 ± 3.3 points). Results were consistent for other PD measures (Good Effects, Feeling High). Chewed Oxycodone DETERx fasted and fed treatments were bioequivalent to the respective intact treatments based on PK parameters. Conclusions: This study showed that when chewed or swallowed intact, under fasted or fed conditions, Oxycodone DETERx had statistically significantly lower abuse potential via the oral route compared with IR oxycodone.
Heterogeneous ice nucleation on dust particles sourced from 9 deserts worldwide – Part 2: Deposition nucleation and condensation freezing
Authors: Boose Yvonne , Baloh Philipp , Plötze Michael , Ofner Johannes , Grothe Hinrich , Sierau Berko , Lohmann Ulrike , Kanji Zamin A.
Published: October 2018

Abstract. Mineral dust particles from deserts are amongst the most common ice-nucleating particles in the atmosphere. The mineralogy of desert dust differs depending on the source region and can further fractionate during the dust emission processes. Mineralogy to a large extent explains the ice nucleation behavior of desert aerosol, but not entirely. Apart from pure mineral dust, desert aerosol particles are often mixed with small amounts of biological material or particles exhibit a coating. Aging on the ground or during atmospheric transport can deactivate nucleation sites and thus strong ice-nucleating minerals may not exhibit their full potential. In the partner paper of this work, it was shown that mineralogy determines most but not all of the ice nucleation behavior in the immersion mode found for desert dust. In this study, the influence of semi-volatile organic compounds and the presence of crystal water on the ice nucleation behavior of desert aerosol in addition to mineralogy is investigated. This work focuses on the deposition and condensation ice nucleation modes at temperatures between 238 to 242 K of 18 dust samples sources from 9 deserts worldwide. Chemical imaging of the particles' surface is used to determine the cause of the observed differences in ice nucleation. It is found that while the ice nucleation ability of the majority of the dust samples is dominated by their quartz and feldspar content, in one carbonaceous sample it is mostly caused by organic matter, potentially cellulose and/or proteins. On the other hand, the ice nucleation ability of an airborne Saharan sample is found to be diminished likely by semi-volatile species covering ice nucleation active sites of the minerals. This study shows that in addition to mineralogy, other factors such as organics and crystal water content can alter the ice nucleation behavior of desert aerosol during atmospheric transport in various ways.
¿Qué es esa cosa llamada intraemprendedor? Gestión del trabajo en el capitalismo cognitivo y concepciones emprendedoras
Authors: Santos-Ortega Antonio , Muñoz-Rodríguez David
Published: October 2018

El artículo estudia la figura del intraemprendedor en el marco actual de ascenso de los discursos emprendedores en el trabajo. En estos discursos, el intraemprendedor surge como nuevo arquetipo del trabajador asalariado, caracterizado por la implicación y la capacidad de innovación, y se presenta como tipo ideal en el cual ha de proyectarse cualquier empleado. El intraemprendedor es un dispositivo de activación para los asalariados. Los objetivos del artículo consisten en explorar cómo se construye el intraemprendedor desde la literatura empresarial. Para cubrir este objetivo se analizan noticias de prensa, artículos en revistas mensuales de gestión y en revistas académicas del área de economía y empresa. Un segundo objetivo busca enclavar la figura del intraemprendedor en el contexto de cambios en la organización del trabajo durante el posfordismo. Se realizará para ello un análisis crítico de algunos de los principales autores que han abordado la cuestión desde la sociología económica.
Una sepoltura privilegiata a mosaico nella Basilica di Uppenna (Tunisia)
Authors: Quattrocchi Luigi
Published: October 2018

L’articolo si concentra su una sepoltura privilegiata nella Basilica di Uppenna, in Tunisia. Questa sepoltura fu probabilmente di un vescovo donatista che partecipò nel 411 alla Concilio di Cartagine. La peculiarità di questa sepoltura è la sovrapposizione di due mosaici funerari: uno più antico datato al secondo quarto del V secolo mentre il più recente datato nella seconda metà del V secolo. Il trattamento riservato a questa sepoltura è simile a quello di altre due sepolture vescovili della stessa basilici. Questi elementi, uniti ad altri, suggeriscono che questa sepoltura fosse riservata a un vescovo o comunque a un personaggio importante all’interno della comunità.
A toponímia proto-histórica como ferramenta do arqueólogo? Comentários sobre uma relação problemática
Authors: Albuquerque Pedro
Published: October 2018

Estudos recentes têm vindo a destacar a toponímia proto-histórica enquanto ferramenta para a interpretação do registo arqueológico, particularmente da sua filiação étnica. Este artigo discute, do ponto de vista metodológico, o uso anacrónico das informações da Linguística no discurso arqueológico, sobretudo no que diz respeito à formação, transmissão e cronologia destes topónimos, assumindo que são estudos realizados sobre línguas antigas desconhecidas. Estes aspectos levam a que a relação entre Arqueologia e Toponímia seja problemática, principalmente quando o objectivo é a análise de vestígios materiais de períodos mais recuados. Apresentam-se alguns casos que revelam estes problemas.
Inscripciones de época romana en San Vicente del Valle (Burgos)
Authors: Fernández Corral Marta
Published: October 2018

En el siguiente trabajo damos a conocer diez inscripciones de época romana conservadas en la iglesia de la Asunción de San Vicente del Valle (Burgos). A pesar de su mal estado de conservación y de la fragmentación de varias de ellas, todo ello derivado de su reutilización como material constructivo, su análisis nos permite identificar el carácter funerario de la mayoría. Su lectura e interpretación muestra, además, el uso de onomástica latina, así como de estructuras textuales y fórmulas funerarias propias del hábito epigráfico romano.
"Nova Augusta" (Lara de los Infantes, Burgos): una nueva inscripción con	mención a la edilidad y reflexiones sobre las magistraturas
Authors: Carcedo de Andrés Bruno P.
Published: October 2018

El presente trabajo ofrece una reflexión sobre las magistraturas de Nova Augusta (Lara de los Infantes) y el análisis de una inscripción funeraria, anteriormente solo conocida mediante una fotografía, procedente de Cubillo del César. En ella se menciona una magistratura, la edilidad, y el término de parentesco sobrinus.
“Un olor balsámico propio de las resinas aromáticas de Oriente”. La supuesta acta del desvendamiento de la momia egipcia conservada en el Museo de Anatomía de la Universidad Complutense de Madrid
Authors: Molinero Polo Miguel Ángel
Published: October 2018

Hace dos décadas se anunciaba el “hallazgo” en Madrid de la momia de una princesa egipcia, hija de Ramsés II. La fuente para esa identificación era la supuesta acta redactada durante el proceso de desvendamiento durante la década de 1880. Si bien la determinación fue puesta en duda en medios académicos desde el primer momento, no se había analizado el texto que la sustentaba. Los objetivos de este artículo son: dar a conocer una lectura crítica del acta, de la que se concluye que fue escrita décadas después de la sesión; precisar datos relacionados con la fecha y actuaciones durante el acto; y exponer la identificación de la adolescente momificada que proporcionó E. Toda. Él fue quien la trajo a España, junto a una colección de cráneos egipcios donada –como la momia– a la institución donde tuvo lugar el acto, la Facultad de Medicina de San Carlos, y sus datos son la única referencia conocida de la procedencia de estos restos. Las rectificaciones permiten contextualizar la sesión en la incipiente Egiptología española del siglo XIX.
Características de la resiliencia familiar en pacientes oncológicos pediátricos: una revisión sistemática
Authors: Navea Martín Ana , Tamayo Hernández José Antonio
Published: October 2018

Introducción: la resiliencia familiar consiste en la adaptación positiva a la adversidad, implicando el cambio de su dinámica y su funcionamiento, permitiendo resolver cualquier estresor que se encuentre durante la vida de sus miembros. Objetivo: conocer las características de la resiliencia familiar en el ámbito de la oncología pediátrica. Método: mediante una revisión sistemática, se realiza una búsqueda en las bases de datos Medline, SCOPUS/Sciencedirect, Academic Search complete, Psychology and Behavioral Sciences Collection, CINAHL y E-Journals, para conocer las últimas investigaciones acerca de modelos, variables, instrumentos e intervenciones de resiliencia familiar, obteniéndose 13 artículos. Resultados: un 84,7% de las investigaciones son de tipo cuantitativo y presentan factor de impacto. La mayor parte de los estudios utilizan la Escala Connor-Davidson Resilience y obtienen que la mayoría de las familias de niños con cáncer son resilientes. Dos artículos presentan modelos de resiliencia familiar. Conclusión: El constructo de resiliencia familiar es complejo y es estudiado desde diferentes perspectivas. Un modelo que resuma todos los aspectos que influyen en el mismo, puede ayudar a la intervención del psicólogo con las familias de niños con cáncer.