bluuebunny/crossref_metadata_2025_split huggingface dataset:
Variasi Ukuran Puli Terhadap Produksi Hasil Alat Penumbuk Jengkol
Authors: Syawaldi Syawaldi 
Published: March 2020

Penelitian ini bertujuan untuk memproduksi emping jengkol berupa kapasitas dan kualitas dalam memproduksi emping jengkol dengan mesin penumbuk emping jengkol yang memvariasikan diameter puli yang berbeda-beda dengan variasi puli ukurans berdiameter 3 inchi, 4 inchi, 5 inchi, dan puli penggerak berdiameter 1,5 inchi. Hasil dari penelitian didapat daya motor penggerak adalah ¼ HP,kecepatan tumbukan rata-rata mesin yang menggunakan variasi puli penggerak diameter 1,5 inchi dengan puli yang digerakan berdiameter 3 inchi adalah 0,36 cm/s dengan waktu rata-rata tumbukan sebesar 10,65 detik,dan kapasitas produksi emping sebesar 333 emping/jam, sedangkan untuk varasi puli penggerak diameter 1,5 inchi dengan puli yang di gerakan diameter 4 inchi didapat kecepatan rata-rata tumbukan sebesar 0,27 cm/s dengan waktu rata-rata yang dibutuhkan mesin untuk menumbuk satu buah emping adalah sebesar 14,17 detik, dan kapasitas produksi emping sebesar 257 emping/jam, dan untuk hasil penelitian menggunakan mesin penumbuk variasi puli penggeraka diameter 1,5 inchi dengan puli yang di gerakan diameter 5 inchi didapatkan kecepatan rata-rata tumbukan sebesar 0,16 cm/s dengan waktu rata-rata tumbukan sebesar 23,91 detik, dengan kapasitas produksi emping sebesar 156 emping/jam. Dari penelitian yang telah dilakukan diperoleh hasil produksi yang baik dari ukuran puli 3 inchi dengan kecepatan rata-rata tumbukan sebesar 0,36 cm/s, dengan kapasitas 333 emping/jam.
Identifikasi Potensi Komoditi Unggulan dalam Pengoptimalan Fungsi Sarana Kargo Bandara Internasional Minangkabau (BIM)
Authors: Dermawan Dedi , Satriardi Satriardi 
Published: March 2020

Ketersediaan data Potensi komoditi adalah salah satu faktor meningkat atau tidaknya investor masuk ke suatu daerah. Sumbar salah satu daerah yang potensial yang memiliki beragam komoditi baik ekspor dan lokal yang mampu meningkatkan perekonomian daerahnya. Namun saat ini Kargo Bandara Internasional Minangkabau terlihat pemanfaatan untuk komoditas sumber daya alam tersebut masih belum optimal. Penelitian ini diarahkan untuk mengetahui potensi-potensi komoditi Sumatera Barat pada saat ini dan yang akan datang dan menyusun serta mendeskripsikan data potensi kedalam suatu data base (manual) berdasarkan pada jenis komoditi, daerah asal, daerah tujuan dan komoditi yang dikirim melalui transportasi udara dengan suatu metoda yang terstruktur dan ilmiah melalui Analisis Cluster dan diawali dengan mengestimasi potensi dengan metoda forcasting/peramalan.
Analisis Kelayakan Bisnis Kuliner “Sushi Kampung”
Authors: Dermawan Dedi , Satriardi Satriardi 
Published: March 2020

Sushi merupakan ciri khas makanan rakyat Cina, sushi biasanya disajikan dengan beras jepang, rumput laut, telur ikan, dan sebagainya, tetapi harga yang ditawarkan sangatlah mahal sehingga tak seluruh kalangan dapat menikmatinya. Bukan hanya itu, sushi memiliki rasa yang asing jika dikonsumsi oleh orang yang belum pernah memakannya, sehingga terkadang sushi juga jarang dikonsumsi oleh masyarakat awam. “Sushi Kampung” merupakan produk olahan dengan rasa yang sudah biasa dinikmati oleh orang awam yaitu dengan varian rasa rendang, dendeng dan juga dapat dikemas dengan sushi yang digoreng yang mana usaha ini akan dibangun di Jalan Melati, Kelurahan Padang Bulan, Kecamatan Senapelan, Kota Pekanbaru. Dari segi aspek pasar didapatkan market sebesar 69% dari pengunjung usaha lainnya, dengan alasan penasaran dengan rasa sushi tersebut. Dari segi aspek finansial, dilakukan uji kelayakan dengan melihat nilai NPV, AE, BCR, PBP, dan IRR usaha ini layak secara ekonomis.
Analisis Kelayakan Kapasitas Produksi dengan Metode RCCP (Studi Kasus PT. Sewangi Sejati Luhur)
Authors: Meirizha St Nova , Ardiansyah Ardiansyah 
Published: March 2020

PT. Sewangi Sejati Luhur merupakan perusahaan manufaktur yang bergerak dibidang produksi CPO kelapa sawit sebagai komponen utama minyak goreng. Perusahaan ini sangat membutuhkan perencanaan kapasitas yang baik karena permintaan produknya yang terus bertambah dari tahun ke tahun, terutama perencanaan untuk produk yang menjadi andalan perusahaan yaitu produk CPO sawit. Kondisi yang terjadi saat ini ada beberapa stasiun kerja yang sumberdayanya menganggur pada saat-saat tertentu. Selain itu, ada juga beberapa stasiun kerja yang mesin atau tenaga kerjanya bekerja overload. Ini dapat dilihat dengan adanya antrian pada stasiun kerja tersebut. Oleh karena itu perlu dilakukan analisis kelayakan terhadap kapasitas produksi pada semua stasiun kerja yang ada dengan metode rough cut capacity planning (RCCP). Ada beberapa tahapan yang dilakukan dalam analisis kelayakan kapasitas. Tahap pertama adalah menghitung kapasitas tersedia setiap stasiun kerja. Selanjutnya dilakukan perhitungan kapasitas yang dibutuhkan setiap stasiun kerja. Tahapan terakhir adalah uji kelayakan kapasitas dengan membandingkan kapasitas tersedia dengan kapasitas yang dibutuhkan. Berdasarkan perhitungan Rough Cut Capacity Planning menggunakan metode CPOF dapat dilihat bahwa masih ada beberapa stasiun kerja yang menghasilkan nilai negatif untuk semua periode selama 12 bulan. Hal ini menunjukkan bahwa kapasitas yang tersedia tidak dapat memenuhi kebutuhan kapasitas atau dengan kata lain kapasitas yang dibutuhkan jauh lebih besar dari kapasitas tersedia yang dimiliki oleh perusahaan.
ANALISIS NERACA AIR DAERAH ALIRAN SUNGAI BOLANGO
Authors: Mopangga Syafrudin 
Published: March 2020

ABSTRAK
Air bertransformasi melalui daur hidrologi yang dikenal sebagai sistim hidrologi dan pada Daerah Aliran Sungai (DAS) air diterima dari curah hujan yang kemudian memprosesnya sesuai dengan karakteristiknya menjadi aliran. Degradasi dan kerusakan sistem hidrologi DAS merupakan salah satu aspek kekritisan daerah aliran sungai, salah satu kerusakan sistem hidrologi DAS adalah terjadinya kekurangan air di musim kering dan meluapnya air pada musim penghujan. Untuk mengetahui kebutuhan air di daerah aliran sungai Bolango, jumlah besar debit ketersediaan air di daerah aliran sungai Bolango dan neraca air di daerah aliran sungai Bolango. Tahapan penelitian melalui Pengambilan Data, Analisa Curah Hujan, Analisa Debit Air, Perhitungan Kebutuhan Air dan Perhitungan Analisis Neraca Air DAS Bolango. Debit minimum pada bulan september dan debit maksimum pada bulan april. Untuk memenuhi kebutuhan air domestik dan non domestik masyarakat terutama yang ada di derah Kota Gorontalo perhitungan ketersediaan air ini sangat diperlukan untuk menentukan neraca air pada Daerah Aliran Sungai Bolango. 1. Debit inflow berkisar antara : 14,42 /detik s/d 26,15 /detik, 2. Debit inflow maksimum (Desember) : 26,15 /detik, 3. Debit inflow minimum (September) : 14,42 /detik.

Kata Kunci: Hidrologi, Curah Hujan, Debit Air, & Neraca Air
Occurrence and Architecture of Kepler Planetary Systems as Functions of Stellar Mass and Effective Temperature
Authors: Yang Jia-Yi , Xie Ji-Wei , Zhou Ji-Lin 
Published: March 2020

Abstract
The Kepler mission has discovered thousands of exoplanets around various stars with different spectral types (M, K, G, and F) and thus different masses and effective temperatures. Previous studies have shown that the planet occurrence rate, in terms of the average number of planets per star, drops with increasing stellar effective temperature (T
eff). In this paper, with the final Kepler Data Release (DR25) catalog, we revisit the relation between stellar effective temperature (as well as mass) and planet occurrence, but in terms of the fraction of stars with planets and the number of planets per planetary system (i.e., planet multiplicity). We find that both the fraction of stars with planets and planet multiplicity decrease with increasing stellar temperature and mass. Specifically, about 75% late-type stars (T
eff < 5000 K) have Kepler-like planets with an average planet multiplicity of ∼2.8, while for early-type stars (T
eff > 6500 K) this fraction and the average multiplicity fall down to ∼35% and ∼1.8, respectively. The decreasing trend in the fraction of stars with planets is very significant with ΔAIC > 30, though the trend in planet multiplicity is somewhat tentative with ΔAIC ∼ 5. Our results also allow us to derive the dispersion of planetary orbital inclinations in relationship with stellar effective temperature. Interestingly, it is found to be similar to the well-known trend between obliquity and stellar temperature, indicating that the two trends might have a common origin.
Photometric Biases in Modern Surveys
Authors: Portillo Stephen K. N. , Speagle Joshua S. , Finkbeiner Douglas P. 
Published: March 2020

Abstract
Many surveys use maximum-likelihood (ML) methods to fit models when extracting photometry from images. We show that these ML estimators systematically overestimate the flux as a function of the signal-to-noise ratio and the number of model parameters involved in the fit. This bias is substantially worse for resolved sources: while a 1% bias is expected for a 10σ point source, a 10σ resolved galaxy with a simplified Gaussian profile suffers a 2.5% bias. This bias also behaves differently depending how multiple bands are used in the fit: simultaneously fitting all bands leads the flux bias to become roughly evenly distributed between them, while fixing the position in “non-detection” bands (i.e., forced photometry) gives flux estimates in those bands that are biased low, compounding a bias in derived colors. We show that these effects are present in idealized simulations, outputs from the Hyper Suprime-Cam fake-object pipeline (SynPipe), and observations from Sloan Digital Sky Survey Stripe 82. Prescriptions to correct for the ML bias in flux, and its uncertainty, are provided.
Analysis of Membership Probability in Nearby Young Moving Groups with Gaia DR2
Authors: Ujjwal K. , Kartha Sreeja S. , Mathew Blesson , Manoj P. , Narang Mayank 
Published: March 2020

Abstract
We analyze the membership probability of young stars belonging to nearby moving groups with Gaia DR2 data. The sample of 1429 stars was identified from “The Catalog of Suspected Nearby Young Moving Group Stars.” Good-quality parallax and proper motion values were retrieved for 890 stars from the Gaia DR2 database. The analysis for membership probability is performed in the framework of the LACEwING algorithm. From the analysis it is confirmed that 279 stars do not belong to any of the known moving groups. We estimated the U, V, W space velocity values for 250 moving group members, which were found to be more accurate than previous values listed in the literature. The velocity ellipses of all the moving groups are well constrained within the “good box,” a widely used criterion to identify moving group members. The age of moving group members are uniformly estimated from the analysis of the Gaia color–magnitude diagram with MIST isochrones. We found a spread in the age distribution of stars belonging to some moving groups, which needs to be understood from further studies.
Probing UV-sensitive Pathways for CN and HCN Formation in Protoplanetary Disks with the Hubble Space Telescope
Authors: Arulanantham Nicole , France Kevin , Cazzoletti Paolo , Miotello Anna , Manara Carlo F. , Schneider P. Christian , Hoadley Keri , van Dishoeck Ewine F. , Günther Hans Moritz 
Published: March 2020

Abstract
The UV radiation field is a critical regulator of gas-phase chemistry in surface layers of disks around young stars. In an effort to understand the relationship between photocatalyzing UV radiation fields and gas emission observed at infrared and submillimeter wavelengths, we present an analysis of new and archival Hubble Space Telescope (HST), Spitzer, ALMA, IRAM, and SMA data for five targets in the Lupus cloud complex and 14 systems in Taurus-Auriga. The HST spectra were used to measure Lyα and far-UV (FUV) continuum fluxes reaching the disk surface, which are responsible for dissociating relevant molecular species (e.g., HCN, N2). Semi-forbidden C ii] λ2325 and UV-fluorescent H2 emission were also measured to constrain inner disk populations of C+ and vibrationally excited H2. We find a significant positive correlation between 14 μm HCN emission and fluxes from the FUV continuum and C ii] λ2325, consistent with model predictions requiring N2 photodissociation and carbon ionization to trigger the main CN/HCN formation pathways. We also report significant negative correlations between submillimeter CN emission and both C ii] and FUV continuum fluxes, implying that CN is also more readily dissociated in disks with stronger FUV irradiation. No clear relationships are detected between either CN or HCN and Lyα or UV-H2 emission. This is attributed to the spatial stratification of the various molecular species, which span several vertical layers and radii across the inner and outer disk. We expect that future observations with the James Webb Space Telescope will build on this work by enabling more sensitive IR surveys than were possible with Spitzer.
Assessment of Astronomical Images Using Combined Machine-learning Models
Authors: Teimoorinia H. , Kavelaars J. J. , Gwyn S. D. J. , Durand D. , Rolston K. , Ouellette A. 
Published: March 2020

Abstract
We present a two-component machine-learning-based approach for classifying astronomical images by data quality via an examination of sources detected in the images and image pixel values from representative sources within those images. The first component, which uses a clustering algorithm, creates a proper and small fraction of the image pixels to determine the quality of the observation. The representative images (and associated tables) are ∼800 times smaller than the original images, significantly reducing the time required to train our algorithm. The useful information in the images is preserved, permitting them to be classified into different categories, but the required storage is reduced. The second component, which is a deep neural network model, classifies the representative images. Using ground-based telescope imaging data, we demonstrate that the method can be used to separate “usable” images from those that present some problems for scientific projects—such as images that were taken in suboptimal conditions. This method uses two different data sets as input to a deep model and provides better performance than if we only used the images’ pixel information. The method may be used in cases where large and complex data sets should be examined using deep models. Our automated classification approach achieves 97% agreement when compared to classification generated via manual image inspection. We compare our method with traditional results and show that the method improves the results by about 10%, and also presents more comprehensive outcomes.
A Ringed Pole-on Outflow from DO Tauri Revealed by ALMA
Authors: Fernández-López Manuel , Zapata Luis A. , Rodríguez Luis F. , Vazzano María M. , Guzmán Andrés E. , López Rosario 
Published: March 2020

Abstract
We present new Atacama Large Millimeter/submillimeter Array (ALMA) Band 6 observations including the CO(2−1) line and 1.3 mm continuum emission from the surroundings of the young stellar object DO Tauri. The ALMA CO molecular data show three different series of rings at different radial velocities. These rings have radii around 220 and 800 au. We make individual fits to the rings and note that their centers are aligned with DO Tauri and its optical high-velocity jet. In addition, we notice that the velocity of these structures increases with the separation from the young star. We discuss the data under the hypothesis that the rings represent velocity cuts through three outflowing shells that are possibly driven by a wide-angle wind, dragging the environment material along a direction close to the line of sight (i = 19°). We estimate the dynamical ages, the mass, the momentum, and the energy of each individual outflow shell and those of the whole outflow. The results are in agreement with those found in outflows from Class II sources. We make a rough estimate for the size of the jet/wind launching region, which needs to be of ≲15 au. We report the physical characteristics of DO Tauri’s disk continuum emission (almost face-on and with a projected major axis in the north–south direction) and its velocity gradient orientation (north–south), indicative of disk rotation for a 1–2 M
⊙ central star. Finally, we show a Hubble Space Telescope [S ii] image of the optical jet and report a measurement of its orientation in the plane of the sky.
Temperatures and Metallicities of M Dwarfs in the APOGEE Survey
Authors: Birky Jessica , Hogg David W. , Mann Andrew W. , Burgasser Adam 
Published: March 2020

Abstract
M dwarfs have enormous potential for our understanding of structure and formation on both Galactic and exoplanetary scales through their properties and compositions. However, current atmosphere models have limited ability to reproduce spectral features in stars at the coolest temperatures (T
eff < 4200 K) and to fully exploit the information content of current and upcoming large-scale spectroscopic surveys. Here we present a catalog of spectroscopic temperatures, metallicities, and spectral types for 5875 M dwarfs in the Apache Point Observatory Galactic Evolution Experiment (APOGEE) and Gaia-DR2 surveys using The Cannon: a flexible, data-driven spectral-modeling and parameter-inference framework demonstrated to estimate stellar-parameter labels (

,

,

, and detailed abundances) to high precision. Using a training sample of 87 M dwarfs with optically derived labels spanning

calibrated with bolometric temperatures, and

dex calibrated with FGK binary metallicities, we train a two-parameter model with predictive accuracy (in cross-validation) to 77 K and 0.09 dex respectively. We also train a one-dimensional spectral classification model using 51 M dwarfs with Sloan Digital Sky Survey optical spectral types ranging from M0 to M6, to predictive accuracy of 0.7 types. We find Cannon temperatures to be in agreement to within 60 K compared to a subsample of 1702 sources with color-derived temperatures, and Cannon metallicities to be in agreement to within 0.08 dex metallicity compared to a subsample of 15 FGK+M or M+M binaries. Finally, our comparison between Cannon and APOGEE pipeline (ASPCAP DR14) labels finds that ASPCAP is systematically biased toward reporting higher temperatures and lower metallicities for M dwarfs.
SN 2010kd: Photometric and Spectroscopic Analysis of a Slow-decaying Superluminous Supernova
Authors: Kumar Amit , Pandey Shashi Bhushan , Konyves-Toth Reka , Staten Ryan , Vinko Jozsef , Wheeler J. Craig , Zheng WeiKang , Filippenko Alexei V. , Kehoe Robert , Quimby Robert , Fang Yuan , Akerlof Carl , McKay Tim A. , Chatzopoulos Emmanouil , Thomas Benjamin P. , Dhungana Govinda , Aryan Amar , Dastidar Raya , Gangopadhyay Anjasha , Gupta Rahul , Misra Kuntal , Kumar Brajesh , Brahme Nameeta , Buckley David 
Published: March 2020

Abstract
This paper presents data and analysis of SN 2010kd, a low-redshift (z = 0.101) H-deficient superluminous supernova (SLSN), based on ultraviolet/optical photometry and optical spectroscopy spanning between −28 and +194 days relative to B-band maximum light. The B-band light-curve comparison of SN 2010kd with a subset of well-studied SLSNe I at comparable redshifts indicates that it is a slow-decaying PTF12dam-like SLSN. Analytical light-curve modeling using the Minim code suggests that the bolometric light curve of SN 2010kd favors circumstellar matter interaction for the powering mechanism. SYNAPPS modeling of the early-phase spectra does not identify broad H or He lines, whereas the photospheric-phase spectra are dominated by O i, O ii, C ii, C iv, and Si ii, in particular the presence of both low- and high-velocity components of O ii and Si ii lines. The nebular-phase spectra of SN 2010kd are dominated by O i and Ca ii emission lines similar to those seen in other SLSNe I. The line velocities in SN 2010kd exhibit flatter evolution curves similar to SN 2015bn but with comparatively higher values. SN 2010kd shows a higher single-zone local thermodynamic equilibrium temperature in comparison to PTF12dam and SN 2015bn, and it has an upper O i ejected mass limit of ∼10 M
⊙. The host of SN 2010kd is a dwarf galaxy with a high star formation rate (∼0.18 ± 0.04 M
⊙ yr−1) and extreme emission lines.
The HSC-SSP Transient Survey: Implications from Early Photometry and Rise Time of Normal Type Ia Supernovae
Authors: Jiang Ji-an , Yasuda Naoki , Maeda Keiichi , Doi Mamoru , Shigeyama Toshikazu , Tominaga Nozomu , Tanaka Masaomi , Moriya Takashi J. , Takahashi Ichiro , Suzuki Nao , Morokuma Tomoki , Nomoto Ken’ichi 
Published: March 2020

Abstract
With a booming number of Type Ia supernovae (SNe Ia) discovered within a few days of their explosions, a fraction of SNe Ia that show luminosity excess in the early phase (early-excess SNe Ia) have been confirmed. In this article, we report early-phase observations of seven photometrically normal SNe Ia (six early detections and one deep non detection limit) at the COSMOS field through a half-year transient survey as a part of the Hyper Suprime-Cam Subaru Strategic Program (HSC SSP). In particular, a blue light-curve excess was discovered for HSC17bmhk, a normal SN Ia with rise time longer than 18.8 days, during the first four days after the discovery. The blue early excess in optical wavelength can be explained not only by interactions with a nondegenerate companion or surrounding dense circumstellar matter but also radiation powered by radioactive decays of 56Ni at the surface of the SN ejecta. Given the growing evidence of the early-excess discoveries in normal SNe Ia that have longer rise times than the average, and a similarity in the nature of the blue excess to a luminous SN Ia subclass, we infer that early excess discovered in HSC17bmhk and other normal SNe Ia are most likely attributed to radioactive 56Ni decay at the surface of the SN ejecta. In order to successfully identify normal SNe Ia with early excess similar to that of HSC17bmhk, early UV photometries or high-cadence blue-band surveys are necessary.
Potential Vorticity Mixing in a Tangled Magnetic Field
Authors: Chen Chang-Chun , Diamond Patrick H. 
Published: March 2020

Abstract
A theory of potential vorticity (PV) mixing in a disordered (tangled) magnetic field is presented. The analysis is in the context of β-plane MHD, with a special focus on the physics of momentum transport in the stably stratified, quasi-2D solar tachocline. A physical picture of mean PV evolution by vorticity advection and tilting of magnetic fields is proposed. In the case of weak field perturbations, quasi-linear theory predicts that the Reynolds and magnetic stresses balance as turbulence Alfvénizes for a larger mean magnetic field. Jet formation is explored quantitatively in the mean field–resistivity parameter space. However, since even a modest mean magnetic field leads to large magnetic perturbations for large magnetic Reynolds number, the physically relevant case is that of a strong but disordered field. We show that numerical calculations indicate that the Reynolds stress is modified well before Alfvénization—i.e., before fluid and magnetic energies balance. To understand these trends, a double-average model of PV mixing in a stochastic magnetic field is developed. Calculations indicate that mean-square fields strongly modify Reynolds stress phase coherence and also induce a magnetic drag on zonal flows. The physics of transport reduction by tangled fields is elucidated and linked to the related quench of turbulent resistivity. We propose a physical picture of the system as a resisto-elastic medium threaded by a tangled magnetic network. Applications of the theory to momentum transport in the tachocline and other systems are discussed in detail.