bluuebunny/crossref_metadata_2025_split huggingface dataset:
Line Extension Asymmetry: Higher Quality Line Extensions Help, Lower Quality Extensions Do Only a Little Harm
Authors: Heath Timothy B. , DelVecchio Devon , McCarthy Michael S. 
Published: August 2018

Abstract
"Managers often extend brands to different quality levels. Adding lower priced variants is a particularly popular option for fighting the growing number of retailer brands. Such a move may increase sales, but it also risks diluting brand image.
This study examines such line extensions by testing middle-quality brands that offer higher or lower quality line extensions. According to the results, the adverse effects of brands’ lower quality versions seem to be overestimated. Higher quality line extensions improved overall brand perception and evaluation far more than lower quality extensions damaged them. This asymmetry prevailed in multiple product classes and for various dimensions of brand evaluation such as brand attitude, brand expertise or brand innovation.
In general, consumers seem to prefer broader product lines. Even if lower quality extensions reduced brand prestige, there was hardly any effect in the overall evaluation. The negative quality association was tempered by increased perceived brand innovation and positive variety effects.
However, lower quality extensions are not harmless in every case. Managers are well advised to consider all branding options and to analyze possible effects, not only on the brand but also on the individual product.
"
Estrategias y estilos de aprendizaje y su relación con el rendimiento académico en estudiantes universitarios de Psicología Educativa.
Authors: Trelles Astudillo Hilda Josefina , Alvarado Maldonado Hugo Patricio , Montánchez Torres Maria Luisa 
Published: August 2018

La presente investigación tiene por objetivo asociar el rendimiento académico y las Estrategias y Estilos de aprendizaje empleados por estudiantes del segundo ciclo de Psicología Educativa de la Universidad Católica de Cuenca, de la ciudad de Cuenca, Ecuador. A partir de un enfoque de investigación cuantitativo, se realizó un estudio descriptivo explicativo, siguiendo un diseño no experimental observacional de corte transversal en la Unidad Académica de Pedagogía, Psicología y Educación, Universidad Católica de Cuenca, en Cuenca Ecuador, durante el período octubre 2015-marzo 2016. La muestra seleccionada mediante un muestreo no probabilístico por conveniencia fue de 29 estudiantes de ambos sexos, los cuales cursan el segundo Ciclo de la carrera de Psicología Educativa. Se aplicaron los instrumentos ACRA y CHAEA para la determinación de Estrategias y Estilos de aprendizaje respectivamente. Se realizó estadística descriptiva, inferencial y de asociación entre las variables mediante pruebas no paramétricas y de correlación. Las estrategias de aprendizaje empleadas son insuficientes, principalmente centradas en la adquisición y codificación de la información sin asociación con el rendimiento académico de las materias evaluadas. Los Estilos de aprendizaje predominantes fueron el Activo y el Reflexivo, mostrando una asociación débil con los resultados académicos de las asignaturas cursadas. La baja influencia de las estrategias y estilos de aprendizaje sobre los resultados académicos impone la necesaria contextualización de la enseñanza en función de las actitudes y aptitudes de los estudiantes con vistas a lograr un mayor rendimiento académico.
E-Government Public Cloud Model (EGPCM)
Authors: Al-Hakkak Nada M. , Shukur Ban Salman , Shaker Atheel Sabih 
Published: August 2018

The concept of implementing e-government systems is growing widely all around the world and becoming an interest to all governments. However, governments are still seeking for effective ways to implement e-government systems properly and successfully. As services of e-government increased and citizens’ demands expand, the e-government systems become more costly to satisfy the growing needs. The cloud computing is a technique that has been discussed lately as a solution to overcome some problems that an e-government implementation or expansion is going through. This paper is a proposal of a new model for e-government on basis of cloud computing. E-Government Public Cloud Model EGPCM, for e-government is related to public cloud computing.
Robust Watermarking Scheme for GIS Vector Maps
Authors: Gaata Methaq Talib 
Published: August 2018

With the fast progress of information technology and the computer networks, it becomes very easy to reproduce and share the geospatial data due to its digital styles. Therefore, the usage of geospatial data suffers from various problems such as data authentication, ownership proffering, and illegal copying ,etc. These problems can represent the big challenge to future uses of the geospatial data. This paper introduces a new watermarking scheme to ensure the copyright protection of the digital vector map. The main idea of proposed scheme is based on transforming the digital map to frequently domain using the Singular Value Decomposition (SVD) in order to determine suitable areas to insert the watermark data. The digital map is separated into the isolated parts.Watermark data are embedded within the nominated magnitudes in each part when satisfied the definite criteria. The efficiency of proposed watermarking scheme is assessed within statistical measures based on two factors which are fidelity and robustness. Experimental results demonstrate the proposed watermarking scheme representing ideal trade off for disagreement issue between distortion amount and robustness. Also, the proposed scheme shows robust resistance for many kinds of attacks.
Effect of Thyroid Disorder in Polycystic Ovarian Syndrome in the Women of Diyala Province
Authors: Abdulmajeed Alzahraa Ibrahim 
Published: August 2018

Background: Polycystic ovarian syndrome (PCOS) is the most endocrine disorder common effect (5-10) % in women at reproductive age. Thyroid dysfunction with PCOS is both representing parts of the endocrine system; this link leads to problems of ovulation and pregnancy. Aims: to investigate the prevalence of thyroid disorder in PCOS woman, and associate the outcome with obesity. Patient and method: This study was conducted in Al-batol Teaching Hospital in Baquba City /Iraq. The results reviewed included 63 women: 45 PCOS were diagnosed on the basis of Rotterdam criteria, 18 as control, aged 17- 44 year. The samples have been collected at second day of menstrual cycle, to test fT3, fT4, fTSH in serum. Information was collected for (Age, BMI, LH, and FSH) to be part of this study. Results: A significant increasing in fT3 was found in PCOS women comparison with control pvalue>0.05. T3 showed in significant differences between lean PCOS matched against control Pvalue < 0.05, along with statistically increasing of TSH level in (lean, overweight) PCOS comparison with control pvalueË‚0.05. Conclusion: PCOS is associated with hypothyroidism. Obesity or overweight is a key factor leads to increased risk of thyroid disorder.
Physiochemical and Antibacterial Studies of Two Tetradentate Ligands Type (N2O2) and Their Complexes withCoII, NiII and ZnII Ions
Authors: Hasan Hasan A. , Salman Khaled 
Published: August 2018

Two tetradentate ligands type (N2O2) and their complexes with CoII, NiII and ZnII ions were synthesized via two steps; in the first, the precursors W1 and W2 were synthesized from the reaction of 2,6-diamine pyridine or 2,4-diamine tolylene with 2,5-hexanedione respectively in a 2:1 mole ratio. In the second step the ligands [H2L1] and [H2L2] were prepared from the reaction of the two precursorâ€™s with 2-hydroxy-1-naphthaldehyde in 1:2 mole ratio. Metal complexes were synthesized by the reaction of the ligands with equivalent amounts of the metal chloride. The prepared compounds were characterized with the physiochemical and spectral techniques which confirmed tetrahedral structure around the metal ions. The antibacterial activity of the ligands and complexes were screened.
Two Derivative Spectrophotometric Methods for the Simultaneous Determination of 4-AminoAntipyrine in Presence of Its Acidic Products
Authors: Abbas Ruba Fahmi 
Published: August 2018

Simple, economic and sensitive mathematical spectrophotometric methods were developed for the estimation 4-aminoantipyrine in presence of its acidic product. The estimation of binary mixture 4-aminoantipyrine and its acidic product was achieved by first derivative and second derivative spectrophotometric methods by applying zero-crossing at (valley 255.9nm and 234.5nm) for 4-aminoantipyrine and (peak 243.3 nm and 227.3nm) for acidic product. The value of coefficient of determination for the liner graphs were not less than 0.996 and the recovery percentage were found to be in the range from 96.555 to 102.160. Normal ratio spectrophotometric method 0DD was used 50 mg/l acidic product as a divisor and then measured at 299.9 nm with correlation coefficient 0.998 and limit of detection 0.04098. ratio derivative methods 1DD and 2DD; are based on measuring the first derivative and second derivative for normal ratio spectrum at (peak 290.7 nm and valley 310 nm) for 1DD and(peak 286, valley 301 and peak 316nm) for 2DD the correlation coefficient for linearity graph not less than 0.997 and the recovery percentage were found to be in the range from 99.64 to 100.11.
Determination of the Degree of Consumption (DoC) of Lube Engine Oils Using Fluorescence Spectroscopy
Authors: Abdul Kareem Rawnaq Qahtan , Al-Janabi Khalid W. Salih 
Published: August 2018

The accreditation of a fast, inexpensive, and simple way to discriminate between different kinds of oils and their efficacy â€œdegree of consumption (DoC)â€ has been developed. The fluorescence spectroscopy provides a reliable method for oil inspection without resorting to tedious separation.
Different new and used oil samples available in the local Iraqi market were investigated. While the challenge is to build a directory containing data of all the oils available in the local market. This method expected to control the falsified (forged) trademarks of motor oils and to discriminate between different oils.
The excitation-emission spectra of oil samples were determined in the range of 200 â€“ 600 nm. The effect of the presence of trace metals on the ï¬‚uorescence intensity of oils was considered by adding few milligrams of (Cu, Al, Fe) to the diluted oil solution. No major effect noticed on ï¬‚uorescence intensity.
The research suggests installing a simple Spectrofluorometer into vehicles to check the DoC of the oil regularly and to notify the driver exactly when to replace the engine oil.
The obtained results indicate the applicability to execute such gadget to be installed in the vehicles for routine detection of the engine oil quality and its degree of consumption DoC. As well as demonstrate the potential of the technique in oil identification and could be further developed.
Gastric Cancer and Epstein-Barr Virus Infection
Authors: Barukčić Ilija 
Published: August 2018

Background: Epstein-Barr virus (EBV) has an important role in the oncogenesis of several malignant diseases. Reports even demonstrated the presence of Epstein-Barr virus in gastric carcinoma (GC). However, the pathogenic role of EBV in GC is uncertain. The present investigation was carried out to investigate a possible causal relationship between GC and EBV.
Statistical Analysis: The method of the conditio sine qua non relationship was used to proof the hypothesis whether gastric cancer is a necessary condition (a conditio sine qua non) of the presence of EBV in human gastric tissues. In other words without GC no EBV in human stomach. The mathematical formula of the causal relationship k was used to proof the hypothesis, whether there is a cause effect relationship between gastric cancer and EBV. Significance was indicated by a p-value (two sided) of less than 0.05.
Results: In toto 26 ISH based studies with a sample size of N = 11860 were re-analyzed. All the studies analyzed support the null-hypothesis without GC no EBV positivity in human stomach. In other words, gastric cancer itself is a conditio sine qua non of EBV positivity in stomach tissues while the cause effect relationship between gastric cancer and EBV was highly significant.
Conclusions: Epstein-Barr virus is neither a cause, nor the cause of human gastric cancer.
KAJIAN MAKNA NGGAHI DANA DAN MAKKA PADA BUDAYA PENYAMBUTAN TAMU-TAMU BESAR DI DOMPU
Authors: Suryaningsih Lili , Rusdiawan Rusdiawan , Nuriadi Nuriadi 
Published: August 2018

The purposes of this study are to describe the meaning of nggahi funds and makka, a tradition to welcome honored guests in Dompu and to identify meanings in the nggahi and makka in the recent social values. The tradition was derived from the indigenous local cultures that currently was retained as one of the folklore so that the researchers approached using the ethnographic study. Three informants were interviewed, tradition ceremony to welcome guests was observed records were analyzed, and introspection was conducted. Analyses were done based on the verbatim transcripts of the traditions. The study revealed that four symbols apply in the nggahi fund traditions and two in makka having connotative and denotative meaning. Guests are greatly appreciated and served in high honors. Values as the Islamic teaching denote are embedded in the social interations in the nggahi and makka.
Análisis y reestructuración del programa de una materia universitaria, bajo el enfoque de formación de competencias profesionales
Authors: Romero Lucrecia Natalia 
Published: August 2018

<p>Este artículo propone la revisión de los programas vigentes de las materias universitarias, a la luz del enfoque de la formación basada en competencias profesionales.</p><p> </p>
Search for associations of polymorphic variants of nucleotide excision repair genes with the increased risk of bronchopulmonary pathology in workers of hazardous and dangerous industries
Authors: Andrushchenko Т. A. , Goncharov S. V. , Dosenko V. Е. 
Published: August 2018

The study covered workers of asbestos cement plants and miners (n = 214). Polymerase chain reaction method in real time helped to identify genotypes of genes XPD (rs13181, rs799793) and ERCC1 (rs11615).The study results prove that XPD*C/C genotype is associated with bronchopulmonary disease risk (p≤0.02, χ2=4.97; OR=2.40; 95% CI: 1.03–5.64).Carriers of XPD*A/C genotype appeared to have relative resistance to bronchopulmonary diseases risk (χ2=3,52, р≤0,06; OR=0,57; 95%CI: 0,30–1,07).
Effect of processing parameters on the microstructural and mechanical properties of aluminum–carbon nanotube composites produced by spark plasma sintering
Authors: Sadeghi B. , Shamanian M. , Cavaliere P. , Ashrafizadeh F. 
Published: August 2018

Abstract
Spark plasma sintering (SPS) has been recognized, in the recent past, as a very useful method to produce metal matrix composites with enhanced mechanical and wear properties. Obviously, the material's final properties are strongly related to the reinforcement types and percentages as well as to the processing parameters employed during synthesis. The present paper analyses the effect of 0.5 and 1% of carbon nanotubes addition on the mechanical and microstructural behavior of Al-based metal matrix composites produced via SPS. The microstructural and mechanical behavior is analyzed as a function of the SPS parameters: heating rate, sintering temperature and pressure.
Cepheids in M31: The PAndromeda Cepheid Sample
Authors: Kodric Mihael , Riffeser Arno , Hopp Ulrich , Goessl Claus , Seitz Stella , Bender Ralf , Koppenhoefer Johannes , Obermeier Christian , Snigula Jan , Lee Chien-Hsiu , Burgett W. S. , Draper P. W. , Hodapp K. W. , Kaiser N. , Kudritzki R.-P. , Metcalfe N. , Tonry J. L. , Wainscoat R. J. 
Published: August 2018

Abstract
We present the largest Cepheid sample in M31 based on the complete Pan-STARRS1 survey of Andromeda (PAndromeda) in the r
P1, i
P1, and g
P1 bands. We find 2686 Cepheids with 1662 fundamental-mode Cepheids, 307 first-overtone Cepheids, 278 type II Cepheids, and 439 Cepheids with undetermined Cepheid type. Using the method developed by Kodric et al., we identify Cepheids by using a three-dimensional parameter space of Fourier parameters of the Cepheid light curves combined with a color cut and other selection criteria. This is an unbiased approach to identify Cepheids and results in a homogeneous Cepheid sample. The period–luminosity relations obtained for our sample have smaller dispersions than in our previous work. We find a broken slope that we previously observed with HST data in Kodric et al., albeit with a lower significance.
First Data Release of the All-sky NOAO Source Catalog
Authors: Nidever David L. , Dey Arjun , Olsen Knut , Ridgway Stephen , Nikutta Robert , Juneau Stephanie , Fitzpatrick Michael , Scott Adam , Valdes Francisco 
Published: August 2018

Abstract
Most of the sky has been imaged with NOAO’s telescopes from both hemispheres. While the large majority of these data were obtained for PI-led projects and almost all of the images are publicly available, only a small fraction have been released to the community via well-calibrated and easily accessible catalogs. We are remedying this by creating a catalog of sources from most of the public data taken on the CTIO-4 m+DECam and the KPNO-4 m+Mosaic3. This catalog, called the NOAO Source Catalog (NSC), contains over 2.9 billion unique objects, 34 billion individual source measurements, covers ≈30000 square degrees of the sky, has depths of ≈23rd magnitude in most broadband filters with ≈1%–2% photometric precision, and astrometric accuracy of ≈7 mas. In addition, ≈2 billion objects and ≈21000 square degrees of sky have photometry in three or more bands. The NSC will be useful for exploring stellar streams, dwarf satellite galaxies, QSOs, high-proper motion stars, variable stars, and other transients. The NSC catalog is publicly available via the NOAO Data Lab service.
A-type Stars, the Destroyers of Worlds: The Lives and Deaths of Jupiters in Evolving Stellar Binaries
Authors: Stephan Alexander P. , Naoz Smadar , Gaudi B. Scott 
Published: August 2018

Abstract
Hot Jupiters (HJs), gas giant planets orbiting their host stars with periods on the order of days, commonly occur in the Galaxy, including relatively massive (1.6–2.4 M
⊙, i.e., A-type main-sequence stars) and evolved stars. The majority of A-type main-sequence stars have stellar binary companions, that can strongly affect the dynamical evolution of planets around either star. In this work, we investigate the effects of gravitational perturbations by a far away stellar companion on the orbital evolution of gas giant planets orbiting A-type stars, the so-called Eccentric Kozai–Lidov mechanism, including the effects of general relativity, post-main-sequence stellar evolution, and tides. We find that only 0.15% of A-type stars will host HJs during their main-sequence lifetimes. However, we also find a new class of planets, Temporary Hot Jupiters (THJs), that form during the post-main-sequence lifetime of about 3.7% of former A-type main-sequence stars. These THJs orbit on periods of tens to a hundred days and only exist for a few 100,000 years before they are engulfed, but they reach similar temperatures as “classical” HJs due to the increased stellar luminosities. THJs’ spin–orbit angles will mostly be misaligned. THJ effects on the host stars’ evolution could also be observable for longer than a few 100,000 years. Overall, we find that approximately 70% of all gas giant planets orbiting A-type stars will eventually be destroyed or engulfed by their star, about 25% during the main-sequence lifetime, about 45% during post-main-sequence evolution.
SU Lyn: Diagnosing the Boundary Layer with UV and Hard X-Ray Data
Authors: Lopes de Oliveira R. , Sokoloski J. L. , Luna G. J. M. , Mukai K. , Nelson T. 
Published: August 2018

Abstract
Symbiotic stars in which the symbiotic phenomenon is powered solely by accretion, often at an average rate that is higher than in cataclysmic variable stars, provide an important opportunity to diagnose boundary layers around disk-accreting white dwarfs. Here, we investigate SU Lyncis (SU Lyn), a recently discovered example of a purely accretion-powered symbiotic star, using the first reliable X-ray spectroscopy, obtained with NuSTAR, and ultraviolet (UV) photometry obtained with Swift. SU Lyn has hard, thermal, X-ray emission that is strongly affected by a variable local absorber that has little impact on the UV emission. Its X-ray spectrum is described well using a plasma cooling from kT ≈ 21 keV, with a 3–30 keV luminosity of approximately 4.9 × 1032 erg s−1. The spectrum is also consistent with the presence of reflection with an amplitude of 1.0, although in that case, the best-fit plasma temperature is 20%–25% lower. The UV to X-ray luminosity ratio of SU Lyn changed significantly between 2015 and 2016. We interpret this as a consequence of a drop by almost 90% in the accretion rate. Whereas the UV luminosity of the disk responded linearly, the luminosity of the optically thin (hard X-ray) emission from the boundary layer remained roughly constant because the boundary layer changed from partially optically thick to almost completely optically thin. Under this interpretation, we place a lower limit on the white dwarf mass of 0.7 M
⊙ (0.8 M
⊙ if we neglect reflection).
Observations of the Kelvin–Helmholtz Instability Driven by Dynamic Motions in a Solar Prominence
Authors: Hillier Andrew , Polito Vanessa 
Published: August 2018

Abstract
Prominences are incredibly dynamic across the whole range of their observable spatial scales, with observations revealing gravity-driven fluid instabilities, waves, and turbulence. With all of these complex motions, it would be expected that instabilities driven by shear in the internal fluid motions would develop. However, evidence of these have been lacking. Here we present the discovery in a prominence, using observations from the Interface Region Imaging Spectrograph, of a shear flow instability, the Kelvin–Helmholtz sinusoidal-mode of a fluid channel, driven by flows in the prominence body. This finding presents a new mechanism through which we can create turbulent motions from the flows observed in quiescent prominences. The observation of this instability in a prominence highlights their great value as a laboratory for understanding the complex interplay between magnetic fields and fluid flows that play a crucial role in a vast range of astrophysical systems.