bluuebunny/crossref_metadata_2025_split huggingface dataset:
Incidencia de la renta en el comportamiento de los turistas en la selección de un destino turístico / Incidence of income in the behavior of tourists for the selection of a tourist destination
Authors: Ochoa Gonzalez Carlos , Sanchez Villacres Ana , Villegas Yagual Felix 
Published: June 2018

Ecuador es un país rico en cultura y naturaleza, que posee un creciente número de visitantes y turistas nacionales que recorren el país. La actividad turística es necesaria para todas las personas ya que además de ayudar a prevenir el estrés, es una actividad integral que involucra a hombres, mujeres, jóvenes y ancianos que permite tener nuevas experiencias con paisajes, culturas, religión y comidas típicas. La investigación realizada tiene como propósito identificar los factores socioeconómicos que influyen en la toma de decisiones del turista interno para realizar viajes. En esta investigación cuantitativa y descriptiva se aplicaron encuestas para analizar la incidencia de los factores sociales y económicos en el comportamiento del turista al momento de elegir un destino para las vacaciones. Los resultados evidencian que la mayoría de las personas deciden realizar turismo nacional de preferencia por la región de la costa y la sierra, que suelen hospedarse en lugares ofrecidos por los amigos o familiares por lo que sus gastos se enfocan fundamentalmente en alimentación y transporte, y que acuden muy poco a la asesoría de agencias turísticas ya que suelen recorrer lugares conocidos o recomendados por los amigos o parientes. Abstract Ecuador is a rich country in culture and nature, which has a growing number of visitors and national tourists visiting the country. Tourist activity is necessary for all people as well as helping to prevent stress, it is an integral activity that involves men, women, and young and old that allows new experiences with landscapes, cultures, religion and traditional food. The research aims to identify socioeconomic factors that influence the decision making of domestic tourists for trips. In this quantitative and descriptive research, surveys were conducted to analyze the impact of social and economic factors in the behavior of tourists when choosing a destination for holidays. The results show that most people decide to make domestic tourism preferably around the coast and the highland region, and usually stay in places offered by friends or family so their expenses are mainly focused on food and transport, and they look for very little advice from tourist agencies as they often go to known places recommended by friends or relatives.
Penggunaan KaliuMeim Permanganat sebagai Oksidan Etilen untuk Memperpanjang Daya Simpan Pisang Raja Bulu
Authors: Arista Mei Lianti , Widodo Winarso Drajad , Suketi Ketty 
Published: June 2018

<em>Pisang merupakan buah klimakterik dengan laju respirasi yang<sub> </sub>meningkat. Peningkatan laju respirasi selama proses pematangan dipicu oleh emisi etilen secara autokatalitik. Laju respirasi pisang dapat dihambat dengan menonaktifkan etilen dengan menggunakan perlakuan kimiawi, salah satunya dengan penggunaan KMnO<sub>4</sub>. Tujuan penelitian ini adalah mempelajari penghambatan laju respirasi pisang Raja Bulu selama penyimpanan menggunakan KMnO<sub>4</sub> dan memperoleh konsentrasi KMnO<sub>4</sub> untuk memperpanjang daya simpan pisang Raja Bulu. Penelitian ini dilakukan selama 1 bulan mulai dari Februari sampai Maret 2013 di Laboratorium Pascapanen, Departemen Agronomi dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor. Rancangan percobaan yang digunakan adalah Rancangan Kelompok Lengkap Teracak dengan 4 perlakuan dan 5 ulangan, yaitu KMnO<sub>4 </sub>7.5%, 15%, 22.5%, dan kontrol (tanpa KMnO<sub>4</sub>). Data yang diperoleh dianalisis dengan uji F dan perlakuan yang mempengaruhi dianalisis dengan uji Duncan Multiple Range Test (DMRT). Parameter yang diukur adalah laju respirasi, indeks skala warna kulit buah, umur simpan, susut bobot, edible part, kekerasan kulit buah, padatan terlarut total, asam tertitrasi total, dan kandungan vitamin C. Hasil percobaan menunjukkan bahwa penggunaan KMnO<sub>4</sub> 7.5%, 15%, dan 22.5% dapat menghambat laju respirasi pisang selama penyimpanan sehingga menunda puncak klimakterik pisang Raja Bulu 1-2 hari dibandingkan kontrol. Penggunaan KMnO<sub>4</sub> 7.5%, 15%, dan 22.5% tidak mempengaruhi kualitas fisik dan kimia pisang Raja Bulu.</em>
FAKTOR-FAKTOR YANG MEMPENGARUHI JUMLAH KELAHIRAN DI KELURAHAN RAPAK DALAM
Authors: Lestari Dinny Fitri Indah , Musa Adnan Haris , Roy Juliansyah 
Published: June 2018

The aims of this research are to know and explain the factors-factors that affect fertility (family income, wife education level, age of first marriage, and use of contraception) effect significantly to the amount of fertility in the Village of Rapak Dalam. This research used primary data i.e data obtained directly from the respondents. Data analysis using multiple linear regression with dummy variable model with SPSS software (Statistical Program for Social Science) Version 20. Research result showed: (1) family income influential variables are positive and significant against the amount of fertility in the village of Rapak Dalam; (2) wife education level variable is negative and significant effect against the amount of fertility in the village of Rapak Dalam; (3) age of first marriage variable is negative and significant effect against the amount of fertility in the village of Rapak Dalam; (4) use of contraception variable is negative and insignificant effect against the amount of fertility in the village of Rapak DalamKeywords : family income, wife education level, age of first marriage, and use of contraception
İnsan Sağlığında Fitoöstrojenlerin Önemi
Authors: ANTMEN Ş. Efsun , ÖGENLER Oya 
Published: June 2018

Son yıllarda tedavide
veya korunma amacıyla fitoöstrojenlerden sağlık alanında sıkça söz edildiği
dikkati çekmektedir. Bu çalışmanın amacı yararlı olacağı düşünülerek kullanımı
tavsiye edilen fitoöstrojenlerin insan sağlığı üzerinde etkileriyle ilgili
literatür bilgisini paylaşmak ve farkındalığı arttırmaktır.

Fitoösterojenler
bitkisel kaynaklı olan polifenolik nonsteroidal bileşiklerdir. Ayrıca
memelilerde yapısal veya fonksiyonel olarak bulanabilmekte ve östrojenler gibi
davranabilmektedirler. Çalışmalar sonucunda 350 bitki türünde östrojenik
aktivite olduğu ileri sürülmektedir. Fitoöstrojenin insan vücuduna alımı
fitoöstrojen özelliğe sahip bitkinin ve/veya bu bitki ile beslenen hayvandan
elde edilen ürünün tüketilmesiyle gerçekleşebilir.

Menopoz,
meme kanseri, kardiyovasküler hastalıklar, osteoporoz, obesite, diabet ve
özellikle kadınları ilgilendiren birçok hastalıkta diyetlerle östrojen alınması
tartışmalıdır. Literatürde hormona bağlı kanserlerin kontrol ve önlenmesinde
fitoöstrojenlerin rol oynadığından söz edilmektedir. Ancak literatürdeki
çalışmalara göre östrojen gibi hareket eden fitoöstrojenlerin, bireyin östrojen
seviyesi düşük ise östrojenik, yüksek ise
antiöstrojenik aktiviteye sahip olduğu saptanmıştır. Meme kanserine koruyucu
olduğu ileri sürülen fitoöstrojenin menapoz sonrasında ise meme kanserini
tetikleyen özelliği olduğu düşünülmektedir. Fitoöstrojenlerin birbirinden
farklı olan bu özellikleri; neden sonuç ilişkisine odaklanmayan uygulayıcılar
tarafından zarar verme potansiyeli taşımaktadır.

Sonuç olarak kanser
dahil bir çok hastalıkta koruma veya tedavi etme amacıyla direkt ya da indirekt
yolla alınabilen fitoöstrojenlerin insan sağlığına zararlı etkilerinin
olabileceği göz ardı edilmemelidir.
Evaluation of Cytotoxicity and Genotoxicity of Micromeria pulegium (Rochel) Benth Extract in Human Lymphocytes and Gr-M Melanoma Cells in vitro
Authors: Haverić Anja , Čakar Jasmina , Hadžić Maida , Haverić Sanin 
Published: June 2018

Micromeria pulegium (Rochel) Benth. is an endemic species of Lamiacea family that includes frequently used plants in culinary and folk medicine. As cytotoxic potential of some species of Micromeria genus has been confirmed, this study aimed to test unknown antiproliferative and genotoxic potential of M. pulegium, endemic bh species, aqueous leaf extract in normal (human lymphocytes) and cancer (human melanoma GR-M) cells in order to protect small populations of native M. pulegium populations or promote its controlled micropropagation or cultivation. Cytokinesis-block micronucleus cytome assay was applied for human lymphocyte cultures, while trypan blue exclusion assay was used for evaluation of cytotoxicity in human GR-M melanoma cells. Results demonstrate no genotoxic effects up to concentration of 0.2 mg/ml in human lymphocyte in vitro but significant reduction of cell viability in human GR-M melanoma cell line cultures treated with 0.3 mg/ml of Micromeria extract.
Şeker İkamesi Olarak Stevya Estraktı Kullanımının Keklerin Bazı Fiziksel ve Duyusal Özellikleri Üzerine Etkisi
Authors: PALAMUTOĞLU Recep , KASNAK Cemal , MORAL Beyza 
Published: June 2018

Kekler tüm
dünyada farklı formülasyonlarla üretilebilen ve oldukça geniş bir tüketici
kitlesi tarafından tüketilen bir üründür. Formülasyonunda bulunan şekerin
farklı fonksiyonel özellikleri vardır. Bunun yanında enerji vermesi sebebi ile
düşük kalorili ürün geliştirme amacı ile araştırmalar gerçekleştirilmektedir.
Stevya özütü kullanımının bu tür ürünlerde meydana getireceği değişikliklere
yönelik çalışmalarda artmaktadır. Bu çalışmada keklere farklı oranlarda sıvı
stevya özütü ilavesinin bazı kalite kriterlerine etkisi incelenmiştir. Şeker miktarları
sırasıyla azaltılarak Kontrol (şeker 140 g),
S1 (şeker 105 g, stevya 3,93 g ), S2 (şeker 70 g, stevya 7,87 g) ve
S3(şeker 35 g, stevya 11,80 g) olmak üzere 4 grup kek hazırlanmıştır. Örneklerde yapısal ve duyusal kalite
analizleri gerçekleştirilmiştir. Yapılan duyusal analiz sonucunda belirlenen
parametrelerin ortalaması olarak en yüksek puanı S1 grubu almıştır. Yapısal
analizler sonucunda ön plana çıkan S2 gurubunun kalori değeri kontrol grubuna
göre % 11 düşüş göstermiştir.
Marmara Gölü (Manisa) ve Homa Lagünü (İzmir)’nden Yakalanan Gümüş Balığı (Atherina boyeri Risso, 1810)’nın Boy-Ağırlık İlişkisi ve Kondisyonu
Authors: İlhan Ali , İlhan Dilek 
Published: June 2018

Bu çalışmada, tatlısu ve tuzlusu karakterindeki iki
farklı ortamdan yakalanan Gümüş balığının boy-ağırlık ilişkisi ve kondisyonunun belirlenmesi ve
karşılaştırılması amaçlanmıştır. Balık örnekleri, Nisan 2015 döneminde, Marmara
Gölü ve Homa Lagünü’nden tül ığrıp ile yakalanmıştır. Marmara Gölü’nden 185 adet ve Homa Lagünü’nden
172 adet olmak üzere toplam 357 Gümüş balığı, cinsiyet farkı gözetilmeksizin
incelenmiştir. Total
boy ve ağırlık dağılımı Marmara Gölü’nde 5.6-8.2 cm ve 1.30-3.99 g, Homa Lagünü’nde ise 3.7-9.9 cm ve 0.32-6.30 g olarak belirlenmiştir.
Boy-ağırlık ilişkisi eşitlikleri Marmara Gölü için; W=0.0059L3.118 (sh(b)=0.068),
r=0.920, Homa Lagünü için; W=0.0077L2.925 (sh(b)=0.062), r=0.929
olarak hesaplanmıştır. Marmara Gölü örneklerinde pozitif allometrik, Homa
Lagünü örneklerinde ise izometrik büyüme modeli gözlenmiştir. Kondisyon faktörü
değerleri, Marmara Gölü örnekleri için 0.62-0.90, Homa Lagünü örnekleri içinse
0.38-0.94 aralığında değişim göstermiştir.
Optimal Frequency Ranges for Submicrosecond Precision Pulsar Timing
Authors: Lam M. T. , McLaughlin M. A. , Cordes J. M. , Chatterjee S. , Lazio T. J. W. 
Published: June 2018

Abstract
Precision pulsar timing requires optimization against measurement errors and astrophysical variance from the neutron stars themselves and the interstellar medium. We investigate optimization of arrival-time precision as a function of radio frequency and bandwidth. We find that increases in bandwidth that reduce the contribution from receiver noise are countered by the strong chromatic dependence of interstellar effects and intrinsic pulse-profile evolution. The resulting optimal frequency range is therefore telescope and pulsar dependent. We demonstrate the results for five pulsars included in current pulsar timing arrays and determine that they are not optimally observed at current center frequencies. For those objects, we find that better choices of total bandwidth as well as center frequency can improve the arrival-time precision. Wideband receivers centered at somewhat higher frequencies with respect to the currently adopted receivers can reduce required overall integration times and provide significant improvements in arrival-time uncertainty by a factor of

in most cases, assuming a fixed integration time. We also discuss how timing programs can be extended to pulsars with larger dispersion measures through the use of higher-frequency observations.
The Ensemble Photometric Variability of Over 105 Quasars in the Dark Energy Camera Legacy Survey and the Sloan Digital Sky Survey
Authors: Li Zefeng , McGreer Ian D. , Wu Xue-Bing , Fan Xiaohui , Yang Qian 
Published: June 2018

Abstract
We present the ensemble variability analysis results of quasars using the Dark Energy Camera Legacy Survey (DECaLS) and the Sloan Digital Sky Survey (SDSS) quasar catalogs. Our data set includes 119,305 quasars with redshifts up to 4.89. Combining the two data sets provides a 15 year baseline and permits the analysis of the long timescale variability. Adopting a power-law form for the variability structure function,

, we use the multidimensional parametric fitting to explore the relationships between the quasar variability amplitude and a wide variety of quasar properties, including redshift (positive), bolometric luminosity (negative), rest-frame wavelength (negative), and black hole mass (uncertain). We also find that γ can be also expressed as a function of redshift (negative), bolometric luminosity (positive), rest-frame wavelength (positive), and black hole mass (positive). Tests of the fitting significance with the bootstrap method show that, even with such a large quasar sample, some correlations are marginally significant. The typical value of γ for the entire data set is ≳0.25, consistent with the results in previous studies on both the quasar ensemble variability and the structure function. A significantly negative correlation between the variability amplitude and the Eddington ratio is found, which may be explained as an effect of accretion disk instability.
An Upper Limit on the Strength of the Extragalactic Magnetic Field from Ultra-high-energy Cosmic-Ray Anisotropy
Authors: Bray J. D. , Scaife A. M. M. 
Published: June 2018

Abstract
If ultra-high-energy cosmic rays originate from extragalactic sources, the offsets of their arrival directions from these sources imply an upper limit on the strength of the extragalactic magnetic field (EGMF). The Pierre Auger Collaboration has recently reported that anisotropy in the arrival directions of cosmic rays is correlated with several types of extragalactic objects. If these cosmic rays originate from these objects, they imply a limit on the EGMF strength of B < 0.7–

G for coherence lengths λ

B
< 100 Mpc and B < 0.7–2.2 × 10−10 G at larger scales. This is comparable to existing upper limits at λ

B
= 1 Mpc, and improves on them by a factor of 4–12 at larger scales. The principal source of uncertainty in our results is the unknown cosmic-ray composition.
Radiation Reaction of Charged Particles Orbiting a Magnetized Schwarzschild Black Hole
Authors: Tursunov Arman , Kološ Martin , Stuchlík Zdeněk , Gal’tsov Dmitri V. 
Published: June 2018

Abstract
In many astrophysically relevant situations, radiation-reaction forces acting upon a charge cannot be ignored, and the question of the location and stability of circular orbits in such a regime arises. The motion of a point charge with radiation reaction in flat spacetime is described by the Lorenz–Dirac (LD) equation, while in curved spacetime it is described by the DeWitt–Brehme (DWB) equation containing the Ricci term and a tail term. We show that for the motion of elementary particles in vacuum metrics, the DWB equation can be reduced to the covariant form of the LD equation, which we use here. Generically, the LD equation is plagued by runaway solutions, so we discuss computational ways of avoiding this problem when constructing numerical solutions. We also use the first iteration of the covariant LD equation, which is the covariant Landau–Lifshitz equation, comparing the results of these two approaches and showing the smallness of the third-order Schott term in the ultrarelativistic case. We calculate the corresponding energy and angular momentum loss of a particle and study the damping of charged particle oscillations around an equilibrium radius. We find that, depending on the orientation of the Lorentz force, the oscillating charged particle either spirals down to the black hole or stabilizes the circular orbit by decaying its oscillations. The latter case leads to the interesting new result of the particle orbit shifting outwards from the black hole. We also discuss the astrophysical relevance of the presented approach and provide estimates of the main parameters of the model.
Multi-band Polarization of Type IIP Supernovae Due to Light Echo from Circumstellar Dust
Authors: Nagao Takashi , Maeda Keiichi , Tanaka Masaomi 
Published: June 2018

Abstract
Type IIP supernovae (SNe IIP) often show relatively high continuum polarization (∼1%) in the late phase. This polarization feature is generally believed to be due to an inner aspherical core revealed in the late phase, while this polarization feature can also be contributed by the effect of polarized-scattered echoes by circumstellar (CS) dust around the SN. In this paper, we propose a unique method to distinguish polarization from the SN ejecta and from the light echo. We quantitatively examine wavelength dependence of the polarization created by the scattered echoes for various geometries and amounts of CS dust. It is found that the polarization in the U-band has characteristic features, i.e., the polarization emerges at an earlier phase with higher polarization degree than that in longer wavelengths. These are due to the rapid evolution of the U-band light curve as well as higher optical depth of dust in shorter wavelengths. Except for the U band, the polarization increases after the plateau phase, and the polarization degree is generally higher for shorter wavelengths. These polarimetric features can be easily distinguished from the polarization expected from an aspherical core, which predicts almost no wavelength dependence. Moreover, we show that multi-band polarimetric observations for SNe IIP can constrain a parameter space in the CS dust mass and distance from the SNe. We thus encourage multi-band polarimetric observations for SNe IIP.
Mixing between Seyfert and H ii Region Excitation in Local Active Galaxies
Authors: Thomas Adam D. , Kewley Lisa J. , Dopita Michael A. , Groves Brent A. , Hopkins Andrew M. , Sutherland Ralph S. 
Published: June 2018

Abstract
We fit theoretical models to the emission-line spectra of 2766 Seyfert galaxies from the Sloan Digital Sky Survey (SDSS). The model line fluxes are derived by “mixing” photoionization model predictions of active galactic nucleus (AGN) narrow line region (NLR) emission and H ii region emission. The observed line fluxes in each spectrum were directly compared to the grid of mixed models using the Bayesian parameter estimation code NebulaBayes, thereby measuring the degree of mixing in each spectrum for the first time. We find that the majority of the Balmer line emission in the majority of Seyfert-classified SDSS spectra arises from contaminating H ii regions within the fixed-size aperture. Even for spectra with log [O iii]/Hβ ≳ 0.9, a median of ∼30% of the Balmer flux arises in H ii regions. We show that the results are qualitatively insensitive to the assumed Seyfert ionizing continuum, and that ionizing spectra with a peak energy of E
peak ∼ 40–50 eV produce the most plausible distributions of mixing fractions. The analysis cleanly quantifies how the starburst—AGN “mixing fraction” increases on the Baldwin, Phillips, & Terlevich (BPT) diagram for SDSS galaxies. Apart from the mixing fraction, the models also vary with the ionization parameter in the NLR, the gas pressure, and the metallicity. Measurements for the metallicity in particular will be presented in a companion paper.
On Detecting Repetition from Fast Radio Bursts
Authors: Connor Liam , Petroff Emily 
Published: June 2018

Abstract
Fast radio bursts (FRBs) are bright, millisecond-duration radio pulses of unknown origin. To date, only one (FRB 121102) out of several dozen has been seen to repeat, though the extent to which it is exceptional remains unclear. We discuss detecting repetition from FRBs, which will be very important for understanding their physical origin, and which also allows for host galaxy localization. We show how the combination of instrument sensitivity, beam shapes, and individual FRB luminosity functions affect the detection of sources with repetition that is not necessarily described by a homogeneous Poisson process. We demonstrate that the Canadian Hydrogen Intensity Mapping Experiment (CHIME) could detect many new repeating FRBs for which host galaxies could be subsequently localized using other interferometers, but it will not be an ideal instrument for monitoring FRB 121102. If the luminosity distributions of repeating FRBs are given by power laws with significantly more dim than bright bursts, CHIME’s repetition discoveries could preferentially come not from its own discoveries, but from sources first detected with lower-sensitivity instruments like the Australian Square Kilometer Array Pathfinder in fly’s eye mode. We then discuss observing strategies for upcoming surveys, and advocate following up sources at approximately regular intervals and with telescopes of higher sensitivity when possible. Finally, we discuss doing pulsar-like periodicity searching on FRB follow-up data, based on the idea that while most pulses are undetectable, folding on an underlying rotation period could reveal the hidden signal.
Gouverner et s’enrichir outre-mer. Entrepreneurs publics et privés dans la culture du pastel (Europe-Amérique, début du xvi e siècle)
Authors: Priotti Jean-Philippe 
Published: June 2018

La culture du pastel toulousain en Nouvelle Espagne dans les années 1530, tandis que la conquête n’est pas encore terminée et que les échanges entre les deux rives de l’océan en sont à leur balbutiement, retient l’attention. À travers ses différentes modalités, sont étudiés les mécanismes de transfert d’une culture européenne en Amérique, et la façon dont l’empereur Charles Quint et un groupe de capitalistes l’utilisaient pour dominer un nouvel espace-temps, ainsi que pour étendre leur autorité outre-mer. L’analyse d’un contrat ( asiento ) permet d’observer les soubassements humains de cette alliance public-privé au Nouveau Monde et la réaction des populations indigènes face à l’implantation de cette nouvelle culture. Au-delà, ce travail dévoile les processus globaux de coopération et de concurrence à l’œuvre dans l’échec de l’entreprise.