bluuebunny/crossref_metadata_2025_split huggingface dataset:
ANALISIS RESPON MEDAN GEOMAGNET ANTARA STASIUN DI EKUATOR MAGNET DAN STASIUN BIAK SAAT BADAI GEOMAGNET PADA MERIDIAN MAGNET 210⁰ MM
Authors: Santoso Anwar 
Published: February 2018

Geomagnetic storm is a geomagnetic disturbance that occurs globally. Until now believed that the greatest impact of geomagnetic storms occurred in the high latitudes and decreases with decreasing latitude to the equator. However, based on the data component of the geomagnetic field H obtained CPMN other phenomena, that is H minimum of Onagawa station (31,15o LU; 212,63o BT magnetic coordinates) is smaller than the H minimum at Biak station (9,73o latitude; 207,39o BT magnetic coordinates) during geomagnetic storms on July 15, 2000. This reality is different from what was believed to be on top. To ensure this, then done the analysis of the geomagnetic field H component response based on the latitude using the geomagnetic field data from Biak station and stations around 210o MM for the whole event a strong geomagnetic storms (Dst <-100 nT) during 1995-2001. Results of the analysis showed that the response time of geomagnetic field geomagnetic storm in Biak is greater than at the magnetic equator (YAP) with an difference average of H is 59,27 nT. EEJ and CEJ pattern in the EEJ region (10o S to 10o N magnetic coordinate) shown could effected to the response of geomagnetic geomagnetic. The most important to note that if the geomagnetic response in Indonesia higher than in the geomagnetic equator (YAP) then the occurrence probability of GIC in Indonesia is higher. AbstrakBadai geomagnet merupakan gangguan geomagnet yang terjadi secara global. Sampai saat ini dipercaya bahwa dampak terbesar badai geomagnet terjadi di lintang tinggi dan semakin menurun dengan menurunnya lintang sampai di ekuator. Namun, berdasarkan olah data komponen H medan geomagnet dari CPMN diperoleh fenomena lain yaitu H minimum dari stasiun Onagawa (31,15⁰ LU; 212,63⁰ BT koordinat magnet) lebih kecil dari H minimum Balai Penjejakan dan Kendali Wahana Antariksa (BPKWA) Biak (9,73⁰ LS; 207,39⁰ BT koordinat magnet) saat badai geomagnet 15 Juli 2000. Kenyataan ini berbeda dari apa yang telah dipercayai di atas. Untuk memastikan hal ini maka dilakukan analisis respon komponen H medan geomagnet berdasarkan lintang menggunakan data komponen H medan geomagnet dari BPKWA Biak dan stasiun di sekitar 210⁰ MM untuk seluruh kejadian badai geomagnet kuat (Dst < -100 nT) selama 1995-2001. Hasil analisis diperoleh bahwa respon medan geomagnet saat badai geomagnet di Biak lebih besar dari pada di ekuator magnet (YAP) dengan rata-rata selisih ∆H-nya 59,27 nT. EEJ dan CEJ di daerah EEJ (10⁰ LU sampai 10⁰ LS magnet) terbukti mempengaruhi respon geomagnet. Hal terpenting yang perlu diperhatikan dari hasil ini adalah bahwa jika respon geomagnet di Indonesia lebih tinggi dibandingkan di daerah ekuator geomagnet (YAP) maka potensi kemunculan GIC juga lebih besar terjadi di Indonesia.
Investigating Blended Learning Effects toward Students’ Literacies for Higher Education Setting
Authors: Ratnawati Ratnawati , Tarwana Wawan 
Published: February 2018

The present study aims at investigating blended learning effects towards students’ accomplishment in terms of participants’ literacies in terms of reading and writing score and their motivation of attending the model of learning. It employed experimental study which concerned on two groups pre-test post- test research design to find out students’ progress before and after blended learning application. Furthermore, two kinds of test; reading and writing test also distributed to the experimental and control groups which are also supported to five Likert scale questionnaires. The data found indicates that the participants had got progress in both writing and reading tests, evenly positive perspectives also expressed toward applying blended learning in classroom practices. The study specially implies recommendation for further pedagogical application in English classroom practices and educational context at general.
Public service motivation and ethical behavior: Evidence from three experiments
Authors: Christensen Robert K. , Wright Bradley E. 
Published: February 2018

Public service motivation (PSM) research has grown rapidly in the last several decades, largely focused on the role of PSM in employment decisions and employee performance. More recently, researchers have raised the possibility that PSM may play a role in workplace ethical behavior. In this study we sought to empirically articulate this link with evidence from three experimental studies. Across three experiments our research fails to confirm the relationship between PSM and ethics. We measured ethics both attitudinally and observationally. We conclude that even if the null findings are due to sample characteristics or weaknesses in the priming intervention, the three studies reported here raise concerns regarding the ease with which one can influence behavior by "priming" PSM. PSM may increase ethical behavior but not always in ways that public managers and organizations can easily influence.
Beschaffung bei technologieorientierten Startups
Authors: Hietschold Nicole , Fottner Johannes 
Published: February 2018

Kurzfassung
Oftmals beschäftigen sich technologieorientierte Startups erst in einer späten Entwicklungsphase mit beschaffungslogistischen Fragestellungen, wenn bereits viel Geld, Kapazität und Arbeitskraft in Sonderprozesse oder ungünstige Lieferantenverträge geflossen sind. Dies lässt sich jedoch vermeiden, wenn frühzeitig Aspekte der Beschaffungslogistik berücksichtigt werden. In diesem Beitrag wird ein flexibles und mitwachsendes Konzept für die Beschaffungslogistik vorgestellt, das speziell auf die Anforderungen technologieorientierter Startups zugeschnitten ist.
Planung und Bewertung von Produktionstechnologien
Authors: Schönmann Alexander , Dobler Richard , Hofer Andreas , Reinhart Gunther 
Published: February 2018

Kurzfassung
Technologische Investitionen können die Wettbewerbsfähigkeit eines Unternehmens nachhaltig positiv beeinflussen, sind aber auch oftmals mit hohen Risiken verbunden. Der Bedarf an systematischen Methoden zur praxisorientierten Unterstützung des Planungs- und Bewertungsprozesses von Produktionstechnologien ist nach wie vor vorhanden. In diesem Beitrag werden fünf ausgewählte Aspekte zur Planung und Bewertung von Produktionstechnologien präsentiert. Für die zukunftsorientierte Leistungspotenzialbewertung von Technologien zeigt sich besonderer Handlungsbedarf, welche deshalb in den Mittelpunkt des Beitrags gestellt wird.
Integration additiver Fertigungstechnologien
Authors: Besenfelder Christoph , Niehues Stephanie , Wortmann Britta , Pracht Henriette 
Published: February 2018

Kurzfassung
Additive Fertigungstechnologien stellen in vielen Bereichen potenzielle zukünftige Fertigungsverfahren dar. Wie können diese neuen Techniken und Prozessschritte in ein Unternehmen sinnvoll integriert und mit den „konventionellen“ Fertigungstechnologien verknüpft werden? Wie funktionieren sie einwandfrei und welche Herausforderungen stellen sich bei der Implementierung? Fragen, die die neu gegründete Kompetenzgruppe „Additive Fertigungstechnologien“ des Fraunhofer IML und des Lehrstuhls für Unternehmenslogistik der TU Dortmund beantworten möchte.
Effect of Spin-Draw Rate and Stretching Ratio on Polypropylene Hollow Fiber Membrane Made by Melt-Spinning and Stretching Method
Authors: Wei F.-J. , Shao H.-J. , Wu B. , Zhang K.-Z. , Luo D.-J. , Qin S.-H. , Hao Z. 
Published: February 2018

Abstract
A series of polypropylene hollow fiber membranes was fabricated by melt-spinning and stretching. The crystalline behavior and hard elasticity of precursor hollow fibers were studied by differential scanning calorimetry (DSC), elastic recovery and strain-stress curves. The structure and properties of membranes were investigated in detail by scanning electron microscopy (SEM), optical microscopy, pure water flux, and so on. The results showed that membranes with excellent structure and properties can be obtained at a spin-draw rate of 350 m/min and a stretching ratio of 200 %. The evolution of crystal structure was explored during the annealing and stretching processes by two-dimensional small-angle X-ray scattering (2D-SAXS). Shish-kebab structure was obtained during annealing for hollow fibers at a spin-draw rate of 350 m/min. The crystalline lamellae were destroyed and micropores were formed during the fabrication of membranes by stretching.
Influence of Electron Induced Reactive Processing and Secondary Rubber Phase on Spinnability of Polypropylene and Polypropylene/Rubber Blends
Authors: ALRahhal S. , Brünig H. , Gohs U. , Heinrich G. 
Published: February 2018

AbstractThe melt spinning behavior of electron-irradiated polypropylene (PP) and PP/ethylene-octene-copolymer (EOC) blends was studied. The low ability to fiber formation of the impact enhanced PP/EOC blends with 2.5 mass percent of high viscous and non-spinnable EOC rubber was enhanced to a large extent by applying a dose of 6 kGy using a continuous electron induced reactive processing (CEIReP). The influence of structure alteration during CEIReP on the fiber formation as well as the textile physical properties of as-spun blend fiber were explored. A remarkable enhancement of the initial modulus as well as the linear elastic region of CEIReP modified PP/EOC blend fiber were achieved.
Monitoring of Injection Molding Tool Corrosion and Effects of Wood Plastic Compound's Moisture on Material Properties
Authors: Steidl E. , Sobczak L. , Pretschuh C. 
Published: February 2018

Abstract
Before injection molding, wood polymer composites (WPC) normally have to be dried to achieve optimal quality of the injected parts as well as to avoid corrosion of the mold. Based on a literature study, there are currently no published investigations dealing with the dependency of WPC properties on the initial moisture content of the compound's pellets. Further, it is known that water and wood in combination with high temperatures can lead to corrosion of steel parts, but a systematic analysis of the impact of WPC injection molding on tool corrosion has not been found in the literature. For the present study, a compound with 68 wt% (weight percent) polypropylene, 30 wt% wood flour and 2 wt% coupling agent was produced and tested in injection molding trials. Specimens according to ISO 527-2 were produced from WPC with defined moisture contents, respectively. Compound moisture, already at very low contents, had significant negative effects on the tested mechanical properties, namely tensile modulus and strength, unnotched and notched Charpy impact strength and heat deflection temperature. Corrosion trials were performed for different tool steel qualities. The severity of corrosion correlates with the amount of chromium (Cr) in the alloys tested.
A Simple Method of Fabricating Graphene-Polymer Conductive Films
Authors: Liu B. Y. , Luo Z. Y. , Zhang W. Z. , Tu Q. , Jin X. 
Published: February 2018

Abstract
In this study, polydimethylsiloxane and graphene were used to fabricate surface electrodes for electrocardiographic (ECG) sensing. A simple and inexpensive method was developed to fabricate graphene-based polymer films. In this method, graphene was inlaid in polydimethylsiloxane by polymer infiltration. The polymer films were successfully used in ECG measurements and performed as well as conventional silver/silver chloride wet electrodes. Few motion artifacts were observed with the graphene films when body postures were changed and during walking. The presented approach is low-cost and suitable for mass production, holding great promise in fabricating polymer electrodes for medical monitoring.
Optical Counterparts of Ultraluminous X-Ray Sources NGC 4559 X-10 and NGC 4395 ULX-1
Authors: Vinokurov A. , Fabrika S. , Atapin K. 
Published: February 2018

Abstract
We study the optical counterparts of ultraluminous X-ray sources (ULXs) NGC 4559 X-10 and NGC 4395 ULX-1. Their absolute magnitudes, after taking reddening into account, are M

V
≈ −5.3 and M

V
≈ −6.2, respectively. The spectral energy distribution (SED) of the NGC 4559 X-10 counterpart is well fitted by a spectrum of an A-type star, whereas NGC 4395 ULX-1 has a blue power-law spectrum. Optical spectroscopy of NGC 4395 ULX-1 has shown a broad He ii λ4686 emission, which puts this object in line with all of the other spectrally studied ULXs. Analyzing the absolute magnitudes of 16 well-studied ULX counterparts, we find that the intrinsically fainter counterparts with M

V
≳ −5.5 have, on average, blackbody-like or power-law SEDs. In other ULX counterparts with M

V
≲ −5.5, we may observe a power-law-like SED; the only one donor is in NGC 7793 P13 (the ULX-pulsar). One may suggest that as the original accretion rate decreases (but nevertheless remains supercritical), the optical luminosity of the wind becomes lower and the donor star might dominate. Using the Swift archival X-ray data for NGC 4395 ULX-1, we have found a period of 62.8 ± 2.3 days. The X-ray phase curve of the source is very similar to the precession curve of SS 433.
A Statistical Approach to Identify Superluminous Supernovae and Probe Their Diversity
Authors: Inserra C. , Prajs S. , Gutierrez C. P. , Angus C. , Smith M. , Sullivan M. 
Published: February 2018

Abstract
We investigate the identification of hydrogen-poor superluminous supernovae (SLSNe I) using a photometric analysis, without including an arbitrary magnitude threshold. We assemble a homogeneous sample of previously classified SLSNe I from the literature, and fit their light curves using Gaussian processes. From the fits, we identify four photometric parameters that have a high statistical significance when correlated, and combine them in a parameter space that conveys information on their luminosity and color evolution. This parameter space presents a new definition for SLSNe I, which can be used to analyze existing and future transient data sets. We find that 90% of previously classified SLSNe I meet our new definition. We also examine the evidence for two subclasses of SLSNe I, combining their photometric evolution with spectroscopic information, namely the photospheric velocity and its gradient. A cluster analysis reveals the presence of two distinct groups. “Fast” SLSNe show fast light curves and color evolution, large velocities, and a large velocity gradient. “Slow” SLSNe show slow light curve and color evolution, small expansion velocities, and an almost non-existent velocity gradient. Finally, we discuss the impact of our analyses in the understanding of the powering engine of SLSNe, and their implementation as cosmological probes in current and future surveys.
A Self-consistent Cloud Model for Brown Dwarfs and Young Giant Exoplanets: Comparison with Photometric and Spectroscopic Observations
Authors: Charnay B. , Bézard B. , Baudino J.-L. , Bonnefoy M. , Boccaletti A. , Galicher R. 
Published: February 2018

Abstract
We developed a simple, physical, and self-consistent cloud model for brown dwarfs and young giant exoplanets. We compared different parametrizations for the cloud particle size, by fixing either particle radii or the mixing efficiency (parameter f
sed), or by estimating particle radii from simple microphysics. The cloud scheme with simple microphysics appears to be the best parametrization by successfully reproducing the observed photometry and spectra of brown dwarfs and young giant exoplanets. In particular, it reproduces the L–T transition, due to the condensation of silicate and iron clouds below the visible/near-IR photosphere. It also reproduces the reddening observed for low-gravity objects, due to an increase of cloud optical depth for low gravity. In addition, we found that the cloud greenhouse effect shifts chemical equilibrium, increasing the abundances of species stable at high temperature. This effect should significantly contribute to the strong variation of methane abundance at the L–T transition and to the methane depletion observed on young exoplanets. Finally, we predict the existence of a continuum of brown dwarfs and exoplanets for absolute J magnitude = 15–18 and

color = 0–3, due to the evolution of the L–T transition with gravity. This self-consistent model therefore provides a general framework to understand the effects of clouds and appears well-suited for atmospheric retrievals.
The Progenitor Dependence of Core-collapse Supernovae from Three-dimensional Simulations with Progenitor Models of 12–40 M⊙
Authors: Ott Christian D. , Roberts Luke F. , da Silva Schneider André , Fedrow Joseph M. , Haas Roland , Schnetter Erik 
Published: February 2018

Abstract
We present a first study of the progenitor star dependence of the three-dimensional (3D) neutrino mechanism of core-collapse supernovae. We employ full 3D general-relativistic multi-group neutrino radiation-hydrodynamics and simulate the postbounce evolutions of progenitors with zero-age main sequence masses of 12, 15, 20, 27, and 40 M
⊙. All progenitors, with the exception of the 12 M
⊙ star, experience shock runaway by the end of their simulations. In most cases, a strongly asymmetric explosion will result. We find three qualitatively distinct evolutions that suggest a complex dependence of explosion dynamics on progenitor density structure, neutrino heating, and 3D flow. (1) Progenitors with massive cores, shallow density profiles, and high post-core-bounce accretion rates experience very strong neutrino heating and neutrino-driven turbulent convection, leading to early shock runaway. Accretion continues at a high rate, likely leading to black hole formation. (2) Intermediate progenitors experience neutrino-driven, turbulence-aided explosions triggered by the arrival of density discontinuities at the shock. These occur typically at the silicon/silicon–oxygen shell boundary. (3) Progenitors with small cores and density profiles without strong discontinuities experience shock recession and develop the 3D standing-accretion shock instability (SASI). Shock runaway ensues late, once declining accretion rate, SASI, and neutrino-driven convection create favorable conditions. These differences in explosion times and dynamics result in a non-monotonic relationship between progenitor and compact remnant mass.
Habitable Evaporated Cores and the Occurrence of Panspermia Near the Galactic Center
Authors: Chen Howard , Forbes John C. , Loeb Abraham 
Published: February 2018

Abstract
Black holes growing via the accretion of gas emit radiation that can photoevaporate the atmospheres of nearby planets. Here, we couple planetary structural evolution models of sub-Neptune-mass planets to the growth of the Milky Way’s central supermassive black hole, Sgr A*, and investigate how planetary evolution is influenced by quasar activity. We find that, out to ∼20 pc from Sgr A*, the XUV flux emitted during its quasar phase can remove several percent of a planet’s H/He envelope by mass; in many cases, this removal results in bare rocky cores, many of which are situated in the habitable zones of G-type stars. Near the Galactic Center, the erosion of sub-Neptune-sized planets may be one of the most prevalent channels by which terrestrial super-Earths are created. As such, the planet population demographics may be quite different close to Sgr A* than in the galactic outskirts. The high stellar densities in this region (about seven orders of magnitude greater than the solar neighborhood) imply that the distance between neighboring rocky worlds is short (500–5000 au). The proximity between potentially habitable terrestrial planets may enable the onset of widespread interstellar panspermia near the nuclei of our galaxy. More generally, we predict these phenomena to be ubiquitous for planets in nuclear star clusters and ultra-compact dwarfs. Globular clusters, on the other hand, are less affected by the central black holes.
La réflexion de Manuel González Prada et José Carlos Mariátegui sur l’intégration de l’Indien à la Nation : Aspects idéologiques et esthétiques
Authors: Fourtané Nicole 
Published: February 2018

Cet article met en lumière l’évolution de la réflexion des deux principaux penseurs radicaux sur la situation des Indiens dans le pays : véritables serfs, parias, chair à canon et pourtant cœur de la nationalité. Pour Manuel González Prada, ils sont le véritable Pérou. Il faut faire d’eux des citoyens, c’est-à-dire des hommes libres. Pour José Carlos Mariátegui (1894-1930), l’Indien est le ciment de la nationalité péruvienne en formation. Il veut construire l’État socialiste sur le modèle de l’ayllu incaïque et les Indiens eux-mêmes doivent être les artisans de cette construction. Les illustrations de la couverture de la revue Amauta (1926-1930), qui privilégient le monde andin et sa culture, se veulent au service de ce projet politique.
Peptide–MHC Class I Tetramers Can Fail To Detect Relevant Functional T Cell Clonotypes and Underestimate Antigen-Reactive T Cell Populations
Authors: Rius Cristina , Attaf Meriem , Tungatt Katie , Bianchi Valentina , Legut Mateusz , Bovay Amandine , Donia Marco , thor Straten Per , Peakman Mark , Svane Inge Marie , Ott Sascha , Connor Tom , Szomolay Barbara , Dolton Garry , Sewell Andrew K. 
Published: February 2018

Abstract
Peptide-MHC (pMHC) multimers, usually used as streptavidin-based tetramers, have transformed the study of Ag-specific T cells by allowing direct detection, phenotyping, and enumeration within polyclonal T cell populations. These reagents are now a standard part of the immunology toolkit and have been used in many thousands of published studies. Unfortunately, the TCR-affinity threshold required for staining with standard pMHC multimer protocols is higher than that required for efficient T cell activation. This discrepancy makes it possible for pMHC multimer staining to miss fully functional T cells, especially where low-affinity TCRs predominate, such as in MHC class II–restricted responses or those directed against self-antigens. Several recent, somewhat alarming, reports indicate that pMHC staining might fail to detect the majority of functional T cells and have prompted suggestions that T cell immunology has become biased toward the type of cells amenable to detection with multimeric pMHC. We use several viral- and tumor-specific pMHC reagents to compare populations of human T cells stained by standard pMHC protocols and optimized protocols that we have developed. Our results confirm that optimized protocols recover greater populations of T cells that include fully functional T cell clonotypes that cannot be stained by regular pMHC-staining protocols. These results highlight the importance of using optimized procedures that include the use of protein kinase inhibitor and Ab cross-linking during staining to maximize the recovery of Ag-specific T cells and serve to further highlight that many previous quantifications of T cell responses with pMHC reagents are likely to have considerably underestimated the size of the relevant populations.