bluuebunny/crossref_metadata_2025_split huggingface dataset:
Rancang Bangun Mesin Penetas Telur Otomatis Menggunakan Mikrokontroler Arduino Uno
Authors: Wirajaya Mohamad Rizky , Abdussamad Syahrir , Nasibu Iskandar Zulkarnain 
Published: August 2020

Abstrak—Proses penetasan terbagi dua yaitu proses penetasan alami (menggunakan indukan), dan proses penetasan buatan ( menggunakan mesin tetas). Jika hanya mengandalkan penetasan alami persentase keberhasilan telur yang menetas hanya sekitar 50% - 60%. Kegagalan ini dapat disebabkan karena kondisi lingkungan yang tidak stabil dan dapat mengakibatkan embrio didalam telur tidak berkembang dengan sempurna. Untuk itu dibuatlah mesin penetas telur otomatis dengan pengontrolan suhu dan kelembaban yang dikontrol langsung oleh Arduino uno dengan menggunakan sensor DHT11 sebagai sensor utama dan RTC DS3231 sebagai counter waktu penetasan telur, dan waktu berputarnya telur serta LCD Keypad shield 16x2 sebagai penampil menu dan mode, dan juga sebagai input data suhu dan kelembaban pada menu custom. Tujuan dari penelitian ini agar dapat menetaskan telur dengan tingkat keberhasilan yang tinggi. Mesin penetas telur otomatis ini menggunakan lampu pijar sebagai penghasil suhu dan humidifier sebagai alat pelembab udara yang digunakan untuk mendapatkan kelembaban yang dibutuhkan telur yang dikontrol langsung oleh Arduino uno. Metode penelitian ini menggunakan metode perancangan dan metode eksperimen mesin penetas telur. Hasil penelitian ini adalah rancang bangun mesin penetas telur otomatis menggunakan mikrokontroler Arduino uno. Pada pengujian yang dilakukan dengan menggunakan telur ayam pada set point suhu : 37 – 38 °C dengan kelembaban yaitu 55 – 60 %, diperoleh hasil dengan persentase yaitu sekitar 98%. Kata Kunci—Mikrokontroller, sensor DHT11, RTC DS3231, humidifier, Suhu dan kelebaban
Klasifikasi Usia Berdasarkan Citra Wajah Menggunakan Algoritma Artificial Neural Network dan Gabor Filter
Authors: Melangi Sudirman 
Published: August 2020

Pengklasifikasian kelompok usia dibangun berdasarkan ciri-ciri dari fitur wajah. klasifikasi usia berdasarkan citra wajah perlu dilakukan dengan lebih akurat agar dapat berguna dalam sistem pengenalan usia manusia. Beberapa kesulitan dalam pengenalan wajah yang sering muncul karena variabilitas wajah seperti ekspresi, penuaan, variasi kumis dan sebagainya. Metode filter gabor dikenal sebagai detektor ciri yang sukses serta memiliki kemampuan mengeliminasi parameter variabilitas wajah yang pada metode lainnya sering menggangggu dalam proses pengenalan. Dengan menggunakan metode Gabor filter yang terbukti handal digunakan untuk memecahkan masalah agar pengenalan usia berdasarkan wajah dapat dilakukan dengan lebih akurat. Hasil penelitian menunjukkan bahwa penerapan metode Gabor Filter dan Artificial Neural Network pada masalah pengenalan usia berdasarkan citra wajah berhasil mendapatkan akurasi yaitu sebesar 83% dengan menggunakan pengujian Confusion Matrix. Dengan demikian penerapan metode Gabor Filter dan Artificial Neural Network pada masalah pengenalan usia berdasarkan citra wajah cukup akurat, dan dapat diimplementasikan. Kata kunci: Klasifikasi Usia, Wajah, ANN, Gabor Filter. Classification of age groups is built on the characteristics of facial features. Age classifications based on facial images need to be done more accurately in order to be useful in the human age recognition system. Some difficulties in facial recognition that often arise due to facial variability such as expression, aging, mustache variations and so on. Gabor filter method is known as a successful feature detector and has the ability to eliminate facial variability parameters which in other methods often interfere in the recognition process. By using the Gabor filter method which is proven to be reliable it is used to solve problems so that face recognition based on faces can be done more accurately. The results showed that the application of the Gabor Filter and Artificial Neural Network method on the problem of age recognition based on face images managed to get an accuracy of 83% using the Confusion Matrix test. Thus the application of the Gabor Filter and Artificial Neural Network method to the problem of age recognition based on face images is quite accurate, and can be implemented.Keywords: Age Classification, Face, ANN, Gabor Filter
Modeling MMS Observations at the Earth’s Magnetopause with Hybrid Simulations of Alfvénic Turbulence
Authors: Franci Luca , Stawarz Julia E. , Papini Emanuele , Hellinger Petr , Nakamura Takuma , Burgess David , Landi Simone , Verdini Andrea , Matteini Lorenzo , Ergun Robert , Contel Olivier Le , Lindqvist Per-Arne 
Published: August 2020

Abstract
Magnetospheric Multiscale (MMS) observations of plasma turbulence generated by a Kelvin–Helmholtz (KH) event at the Earth’s magnetopause are compared with a high-resolution two-dimensional (2D) hybrid direct numerical simulation of decaying plasma turbulence driven by large-scale balanced Alfvénic fluctuations. The simulation, set up with four observation-driven physical parameters (ion and electron betas, turbulence strength, and injection scale), exhibits a quantitative agreement on the spectral, intermittency, and cascade-rate properties with in situ observations, despite the different driving mechanisms. Such agreement demonstrates a certain universality of the turbulent cascade from magnetohydrodynamic to sub-ion scales, whose properties are mainly determined by the selected parameters, also indicating that the KH instability-driven turbulence has a quasi-2D nature. The fact that our results are compatible with the validity of the Taylor hypothesis, in the whole range of scales investigated numerically, suggests that the fluctuations at sub-ion scales might have predominantly low frequencies. This would be consistent with a kinetic Alfvén wave-like nature and/or with the presence of quasi-static structures. Finally, the third-order structure function analysis indicates that the cascade rate of the turbulence generated by a KH event at the magnetopause is an order of magnitude larger than in the ambient magnetosheath.
Rotation of Solar Analogs Crossmatching Kepler and Gaia DR2
Authors: Nascimento Jr. J.-D. do , Almeida L. de , Velloso E. N. , Anthony F. , Barnes S. A. , Saar S. H. , Meibom S. , Costa J. S. da , Castro M. , Galarza J. Y. , Lorenzo-Oliveira D. , Beck P. G. , Meléndez J. 
Published: August 2020

Abstract
A major obstacle to interpreting the rotation period distribution for main-sequence stars from Kepler mission data has been the lack of a precise evolutionary status for these objects. We address this by investigating the evolutionary status based on Gaia Data Release 2 parallaxes and photometry for more than 30,000 Kepler stars with rotation period measurements. Many of these are subgiants and should be excluded in future work on dwarfs. We particularly investigate a 193-star sample of solar analogs and report newly determined rotation periods for 125 of these. These include 54 stars from a prior sample, of which we can confirm the periods for 50. The remainder are new, and 10 of them longer than a solar rotation period, suggesting that Sun-like stars continue to spin down on the main sequence past solar age. Our sample of solar analogs could potentially serve as a benchmark for future missions, such as PLAnetary Transits and Oscillations of stars, and emphasizes the need for additional astrometric, photometric, and spectroscopic information before interpreting the stellar populations and results from time series surveys.
SN 2019ehk: A Double-peaked Ca-rich Transient with Luminous X-Ray Emission and Shock-ionized Spectral Features
Authors: Jacobson-Galán Wynn V. , Margutti Raffaella , Kilpatrick Charles D. , Hiramatsu Daichi , Perets Hagai , Khatami David , Foley Ryan J. , Raymond John , Yoon Sung-Chul , Bobrick Alexey , Zenati Yossef , Galbany Lluís , Andrews Jennifer , Brown Peter J. , Cartier Régis , Coppejans Deanne L. , Dimitriadis Georgios , Dobson Matthew , Hajela Aprajita , Howell D. Andrew , Kuncarayakti Hanindyo , Milisavljevic Danny , Rahman Mohammed , Rojas-Bravo César , Sand David J. , Shepherd Joel , Smartt Stephen J. , Stacey Holland , Stroh Michael , Swift Jonathan J. , Terreran Giacomo , Vinko Jozsef , Wang Xiaofeng , Anderson Joseph P. , Baron Edward A. , Berger Edo , Blanchard Peter K. , Burke Jamison , Coulter David A. , DeMarchi Lindsay , DerKacy James M. , Fremling Christoffer , Gomez Sebastian , Gromadzki Mariusz , Hosseinzadeh Griffin , Kasen Daniel , Kriskovics Levente , McCully Curtis , Müller-Bravo Tomás E. , Nicholl Matt , Ordasi András , Pellegrino Craig , Piro Anthony L. , Pál András , Ren Juanjuan , Rest Armin , Rich R. Michael , Sai Hanna , Sárneczky Krisztián , Shen Ken J. , Short Philip , Siebert Matthew R. , Stauffer Candice , Szakáts Róbert , Zhang Xinhan , Zhang Jujia , Zhang Kaicheng 
Published: August 2020

Abstract
We present panchromatic observations and modeling of the Calcium-rich supernova (SN) 2019ehk in the star-forming galaxy M100 (d ≈ 16.2 Mpc) starting 10 hr after explosion and continuing for ∼300 days. SN 2019ehk shows a double-peaked optical light curve peaking at t = 3 and 15 days. The first peak is coincident with luminous, rapidly decaying Swift-XRT–discovered X-ray emission (

at 3 days; L
x ∝ t
−3), and a Shane/Kast spectral detection of narrow Hα and He ii emission lines (v ≈ 500

) originating from pre-existent circumstellar material (CSM). We attribute this phenomenology to radiation from shock interaction with extended, dense material surrounding the progenitor star at r < 1015 cm and the resulting cooling emission. We calculate a total CSM mass of ∼7 × 10−3

(M
He/M
H ≈6) with particle density n ≈ 109 cm−3. Radio observations indicate a significantly lower density n < 104 cm−3 at larger radii r > (0.1–1) × 1017 cm. The photometric and spectroscopic properties during the second light-curve peak are consistent with those of Ca-rich transients (rise-time of t

r
= 13.4 ± 0.210 days and a peak B-band magnitude of M

B
= −15.1 ± 0.200 mag). We find that SN 2019ehk synthesized (3.1 ± 0.11) × 10−2

of

and ejected M
ej = (0.72 ± 0.040)

total with a kinetic energy E
k = (1.8 ± 0.10) × 1050 erg. Finally, deep HST pre-explosion imaging at the SN site constrains the parameter space of viable stellar progenitors to massive stars in the lowest mass bin (∼10

) in binaries that lost most of their He envelope or white dwarfs (WDs). The explosion and environment properties of SN 2019ehk further restrict the potential WD progenitor systems to low-mass hybrid HeCO WD+CO WD binaries.
CLEAR. II. Evidence for Early Formation of the Most Compact Quiescent Galaxies at High Redshift
Authors: Estrada-Carpenter Vicente , Papovich Casey , Momcheva Ivelina , Brammer Gabriel , Simons Raymond , Bridge Joanna , Cleri Nikko J. , Ferguson Henry , Finkelstein Steven L. , Giavalisco Mauro , Jung Intae , Matharu Jasleen , Trump Jonathan R. , Weiner Benjamin 
Published: August 2020

Abstract
The origin of the correlations between mass, morphology, quenched fraction, and formation history in galaxies is difficult to define, primarily due to the uncertainties in galaxy star formation histories (SFHs). SFHs are better constrained for higher redshift galaxies, observed closer to their formation and quenching epochs. Here we use “nonparametric” SFHs and a nested sampling method to derive constraints on the formation and quenching timescales of quiescent galaxies at

. We model deep HST grism spectroscopy and photometry from the CLEAR (CANDELS Lyα Emission at Reionization) survey. The galaxy formation redshifts, z
50 (defined as the point where they had formed 50% of their stellar mass) range from

(shortly prior to the observed epoch) up to

. We find that early formation redshifts are correlated with high stellar-mass surface densities,

, where Σ1 is the stellar mass within 1 pkpc (proper kpc). Quiescent galaxies with the highest stellar-mass surface density,

, show a minimum formation redshift: all such objects in our sample have

. Quiescent galaxies with lower surface density,

, show a range of formation epochs (

), implying these galaxies experienced a range of formation and assembly histories. We argue that the surface density threshold

uniquely identifies galaxies that formed in the first few Gyr after the big bang, and we discuss the implications this has for galaxy formation models.
Exploring the Lower Mass Gap and Unequal Mass Regime in Compact Binary Evolution
Authors: Zevin Michael , Spera Mario , Berry Christopher P L , Kalogera Vicky 
Published: August 2020

Abstract
On 2019 August 14, the LIGO and Virgo detectors observed GW190814, a gravitational-wave signal originating from the merger of a

black hole (BH) with a

compact object. GW190814's compact-binary source is atypical both in its highly asymmetric masses and in its lower-mass component lying between the heaviest known neutron star (NS) and lightest known BH in a compact-object binary. If formed through isolated binary evolution, the mass of the secondary is indicative of its mass at birth. We examine the formation of such systems through isolated binary evolution across a suite of assumptions encapsulating many physical uncertainties in massive-star binary evolution. We update how mass loss is implemented for the neutronization process during the collapse of the proto-compact object to eliminate artificial gaps in the mass spectrum at the transition between NSs and BHs. We find it challenging for population modeling to match the empirical rate of GW190814-like systems while simultaneously being consistent with the rates of other compact binary populations inferred from gravitational-wave observations. Nonetheless, the formation of GW190814-like systems at any measurable rate requires a supernova engine model that acts on longer timescales such that the proto-compact object can undergo substantial accretion immediately prior to explosion, hinting that if GW190814 is the result of massive-star binary evolution, the mass gap between NSs and BHs may be narrower or nonexistent.
White Dwarfs in Close Binaries: A Systematic Search for Mass-transfer Systems and Supernova Ia Progenitors in the APOGEE Survey
Authors: Anguiano Borja , Lewis Hannah M. , Corcoran Kyle A. , Washington Jasmin , Majewski Steven R. , Prieto Carlos Allende , Mazzola Christine N. , Badenes Carles , Stassun Keivan , Blondin John 
Published: August 2020

Abstract
We have created a new and unique database, the APOGEE–Galaxy Evolution Explorer (GALEX)–Gaia catalog, to study white dwarfs in close binaries, and, in particular, to: (1) create a minimally biased sample of white dwarf-main sequence (WDMS) systems derived from the combination of GALEX, Gaia, and the dual hemisphere, multi-epoch, high-resolution, infrared APOGEE-1 and -2 spectroscopic surveys, and (2) exploit this catalog to vastly increase the number of well-characterized WDMS systems having derived dynamical parameters (e.g., masses, separation, orbital periods, etc.) as well as precision multi-element chemical compositions by exploiting the high resolution, multi-epoch data from APOGEE. This catalog will significantly further our understanding of compact binary evolution.
Weight Sensitivity Training Among Undergraduate Nursing Students
Authors: Oliver Tracy L. , Qi Bing-Bing , Shenkman Rebecca , Diewald Lisa , Smeltzer Suzanne C. 
Published: August 2020

Background:
A Curriculum Embedded Weight Sensitivity Training program (CeWebs) was integrated into an undergraduate nursing course to improve attitudes and beliefs toward individuals with obesity.

Method:
A one-group repeated measures study was conducted to compare students' pretest and posttest attitudes and beliefs using the Attitudes Toward Obese Persons (ATOP) and Beliefs About Obese Persons (BAOP) at the beginning and end of the semester.

Results:

Comparison of pretraining and posttraining scores of 125 junior nursing students on ATOP (73.96 ± 15.02 and 84.59 ± 15.39, respectively) indicated a significant increase in scores (
p
< .01), which reflects more positive attitudes. Comparison of pretraining and posttraining BAOP scores (18.20 ± 6.84 and 22.22 ± 7.87, respectively) indicated a significant (
p
< .01) increase in scores, indicating beliefs that obesity is not controllable.

Conclusion:

These findings suggest that embedding weight sensitivity training into undergraduate nursing curricula may improve attitudes and beliefs toward patients with obesity.

[
J Nurs Educ
. 2020;59(8):453–456.]
Development of the REACH (Real Education About Cannabis and Health) Program for Canadian Youth
Authors: King Patricia M. , Klemmer Jennafer , Mansell Kerry , Alcorn Jane , Mansell Holly 
Published: August 2020

Background:
Because cannabis use in children can have negative consequences, the recent legalization of recreational cannabis for adults in Canada creates an urgent need for youth education.

Method:

A multidisciplinary clinical rotation was developed wherein nursing and pharmacy students collaborated with youth (grades 7 through 10) to construct an educational program about cannabis. Four schools participated, representing a variety of socioeconomic demographics. Feedback was solicited from students and stakeholders. The purpose of this project was to create REACH (
R
eal
E
ducation
A
bout
C
annabis and
H
ealth), a toolkit and curriculum resource that includes lesson plans for teachers covering the science of cannabis, social science implications, peer pressure, decision making and harm reduction, videos featuring youth testimonials, and supplemental resources.

Results:
Preliminary feedback suggests the materials are engaging and informative.

Conclusion:

A collaboration of health science students with youth in schools resulted in an authentic and relatable educational program about cannabis. Future studies will evaluate REACH's effectiveness in seventh- and ninth-grade students.

[
J Nurs Educ
. 2020;59(8):465–469.]
Los fantasmas de la Unidad Popular: un vacío inquietante en la historiografía chilena
Authors: Pinto Vallejos Julio 
Published: August 2020

O artigo indaga na cobertura especificamente historiográfica do período da Unidad Popular no Chile, constatando que, a diferença do gênero testemunhal ou das outras ciências sociais, nossa disciplina não tem se ocupado suficientemente desse momento determinante da historia chilena recente. Feita essa constatação, caracterizam-se as obras cadastradas e se exploram algumas hipóteses que permitam dar conta da escassa produção detectada. Entre essas, destacam-se as das responsabilidades pendentes, as feridas ainda abertas ou a possível irrelevância de uma experiência dessas características para o Chile de hoje, concluindo com um chamado a encerrar essa brecha historiográfica e recuperar a noção da história como um espaço aberto às mudanças a utopias.
Indio y campesinado en el oeste de Catamarca, en la transición al estado-nación. 1812-1895
Authors: Orden Gabriela de la , Díaz Marcelo Omar , Zamparella Gladys Noemí 
Published: August 2020

En el proyecto en ejecución se aborda la problemática de las tierras de comunidad y de la población indígena de Catamarca en el período de 1830 a 1910. Nuestra primera aproximación al tema es el estudio de la población, en especial de la población indígena y del campesinado, la caracterización de los usos y prácticas en relación a la ocupación de las tierras. En la ponencia se analizan las características demográficas, socio-económicas y culturales de Catamarca en el período 1812-1895, con especial referencia a la población rural del oeste. Se utilizan lógicas cuanti y cualitativas para el análisis del padrón de 1812 y censos de 1869 y 1895, información cruzada con la que surge de fuentes que provienen de viajeros y humanistas que recorren el territorio provincial o bien residen en él durante la segunda mitad del siglo XIX (Carlos Germán Burmeister, Samuel Lafone Quevedo y Francisco Latzina). A medida que se afianza el estado-nación la categoría indio es reemplazada por la de campesino y desaparecen en los registros las distinciones socio-étnicas sustituidas por la de argentinos. La población rural crece en el período inter-censal, en especial en el oeste y se agudiza la marginación cultural y económica del campesinado.
O “imperialismo” chileno durante a Guerra do Pacífico (1879-1884)
Authors: Marques Gomes Flávia Schettino 
Published: August 2020

A resenha do livro Guerreros Civilizadores, de Carmen McEvoy, versa sobre a construção e desenvolvimento dos argumentos utilizados pela autora para demonstrar a sua ideia de "expanção civilizadora" chilena sobre os territórios da Bolivia e do Peru durante a Guerra do Pacífico (1879-1884). O livro analisa, por meio de variadas fontes históricas, os aspectos político, social e cultural da guerra e discute a complexidade das dinamicas sociais desenvolvidas pelos diversos atores que participaram do conflito.
Colonialidade, raça e mestiçagem no ensaísmo sobre a América Latina no século XX: pensando alternativas ao "universalismo excludente"
Authors: Ascenso João Gabriel da Silva 
Published: August 2020

ResumoO presente artigo busca realizar um mapeamento de parte da produção da teoria crítica contemporânea, na América Latina, a respeito do caráter eminentemente colonial da construção do conhecimento no (e sobre o) continente. A partir daí, analisam-se os mecanismos políticos e epistemológicos a partir dos quais esse tipo de conhecimento eurocêntrico se estruturou historicamente, destacando a construção do vocabulário racial. Investigo, em seguida, os antecedentes dessa denúncia da vinculação do conhecimento continental aos moldes europeus, recuperando o ensaísmo mexicano do início do século XX, que pretende reinventar a ideia de raça a partir da positivação da mestiçagem – notadamente a obra La raza cósmica: misión de la raza iberoamericana (1926), de José Vasconcelos. Finalizo com uma reflexão sobre a persistência da colonialidade em parte dos mesmos discursos que pretendiam superá-la. Palavras-chave: colonialidade; mestiçagem; raça cósmica.
La unidad del exilio: Las revistas Cuadernos de Marcha y Controversia en México
Authors: Garategaray Martina 
Published: August 2020

Este artículo se propone explorar dos revistas emblemáticas de las culturas argentina y uruguaya que se publicaron en el exilio: Cuadernos de Marcha (1979- 1985) y Controversia para el examen de la realidad Argentina (1979-1981). Consideramos que las mismas son revistas que expresaron y dotaron de sentido a un momento de la historia político cultural reciente tan significativo como fue el exilio y en cuyas páginas creemos quedaron las marcas de los debates de una época que puede ser revisitada para comprender tanto a los años setenta como el devenir democrático de Argentina y Uruguay. Es nuestra hipótesis que, si el exilio fue un importante espacio de debate y reflexión, funcionó al interior de estas revistas como “mito de unidad”, es decir no sólo como un lugar físico sino también simbólico que les permitió articular nuevos colectivos y categorías para interpretar la realidad. Y el modo particular de realizar estas operaciones estuvo íntimamente tensionado por sus respectivas culturas político- intelectuales.
OUTUBRO REBELDE: eleições e protestos na América Latina.
Authors: Wasserman Cláudia 
Published: August 2020

Resumo: O objetivo desse artigo é analisar os protestos ocorridos em alguns países da América Latina e do Caribe por volta do mês de outubro de 2019, relacionando-os tanto com a reassunção de governos conservadores quanto com os processos de alternância eleitoral entre governos neoliberais e de esquerda ou centro-esquerda nos últimos anos do século XX e início do século XXI.
Palavras-chave: Protestos na América Latina, Neoliberalismo, Esquerdas na América Latina