bluuebunny/crossref_metadata_2025_split huggingface dataset:
PENENTUAN STATUS PEMANFAATAN DAN SKENARIO PENGELOLAAN IKAN CAKALANG (Katsuwonus pelamis) YANG TERTANGKAP DI PERAIRAN BOLAANG-MONGONDOW SULAWESI UTARA
Authors: Kekenusa John S , Watung Victor N.R , Hatidja Djoni 
Published: July 2019

PENENTUAN STATUS PEMANFAATAN DAN SKENARIO PENGELOLAANIKAN CAKALANG (Katsuwonus pelamis) YANG TERTANGKAP DI PERAIRANBOLAANG-MONGONDOW SULAWESI UTARAABSTRAKIkan Cakalang (Katsuwonus pelamis L.), perlu dikelola dengan baik sebagai sumber daya alam terbarukan, tetapi semakin habis atau punah. Salah satu pendekatan dalam pengelolaan sumberdaya ikan adalah dengan pemodelan. Analisis dilakukan, bertujuan untuk mendapatkan model terbaik untuk model surplus produksi adalah Maximum Sustainable Yield (MSY), dan untuk mendapatkan pemanfaatan cakalang dan tingkat usaha. Data yang digunakan untuk model produksi surplus dikumpulkan dari data hasil tangkapan cakalang yang disediakan oleh Dinas Kelautan Dan Perikanan Kabupaten Bolaang Mongondow Provinsi Sulawesi Utara. Model terbaik Surplus Produksi dapat digunakan untuk menilai potensi hasil cakalang adalah model Fox. Upaya optimal per tahun secara biologi EMSY adalah 3.876 perjalanan. Hasil optimal secara biologi CMSY 1,505.00 ton per tahun. Tingkat pemanfaatan untuk tahun 2005 adalah 124,48%, dengan tingkat usaha 110,96%. Hasil tangkapan untuk tahun 2005 sudah di atas nilai MSY, yang menunjukkan overfishingKata kunci: ikan cakalang, Model surplus produksi, Maksimum Sustainable Yield,Bolaang MonogndowDETERMINATION OF THE STATUS OF UTILIZATION AND MANAGEMENTSCENARIOS SKIPJACK (Katsuwonus pelamis L.) CAUGHT IN THEBOLAANG MONGONDOW BEACH, NORTH SULAWESIABSTRACTSkipjack (Katsuwonus pelamis L.), needs to be managed well as a renewable natural resources, but vunerable to depletion or extinction. One approach in fish resource management is by modeling. Analysis were carried out, aimed to get the best model for surplus production model, to assess the Maximum Sustainable Yield (MSY), and to get the skipjack utilization and effort level. Data used for surplus production model were collected from skipjack landings data provided by Marine and Fisheries Service (Dinas Kelautan dan Perikanan) of Bolaang-Mongondow Regency and North Sulawesi Province. The best Surplus Production Model that can be used to assess the skipjack potential yield is the Fox model. The optimum effort per year biologically EMSY is 3,876 trips. The optimum yield biologically CMSY is 1,505.00 tons per year. Utilization level for 2005 was 124.48 %, with effort level 110.96 %. The catch for 2005 had already above the MSY value, which shows an overfishing.Keywords : Skipjack, Surplus Production Model, Maximum Sustainable Yield, Bolaang Mongondow
ANALISA DAN SIMULASI SISTEM PENGENDALIAN MOTOR DC
Authors: Waroh Anthoinete P.Y. 
Published: July 2019

ABSTRAK Motor DC merupakan salah satu motor listrik yang banyak digunakan dalam industri dan akan tetap diminati oleh dunia usaha/industri karena karakteristik pengaturannya yang baik. Dari setiap spesifikasi motor DC dapat diamati bentuk karakteristik yang diperoleh dengan menjalankan/mensimulasikan model dinamis matematis dari motor DC. Salah satu tujuan penelitian ini yaitu untuk merumuskan model matematik motor DC kemudian dari model tersebut kemudian dilakukan analisis dan simulasi menggunakan Simulink untuk mempelajari /mengamati pengendalian arus jangkar melalui kendali jangkar, kendali medan maupun melalui kedua terminal tersebut. Manfaat pragmatis yaitu pengetahuan mengenai mengenai karakteristik motor DC untuk setiap jenis spesifikasi. Dari respon karakteristik yang dihasilkan akan membantu untuk menentukan jenis spesifikasi yang cocok digunakan sesuai dengan kebutuhan. Kata kunci : Motor DC, Karakteristik, Simulasi. ANALYSIS AND SIMULATION OF DC MOTOR CONTROL SYSTEM ABSTRACT DC motor many used in the industry and should be need by businesses / industries because of the controll characteristics is the best of other DC motor. The specification dc motor can obeserved a characterristic with running / simulation dynamic mathematical model of dc motor. One purpose of this research is the model for get the model of simulation using simulink for observation retstraint armature flows through the control of armature, field control and by the second terminal. Benefit of the aplication of knowledge about the characteristics of dc motor for any type of specification. From the characteristic of the response dc motor. It help determine the kind of specification for Matched used in accordance with the needs. Keywords : DC Motor, characteristics, simulation.
PEMETAAN KABUPATEN/KOTA DI PROVINSI JAWA BARAT BERDASARKAN NILAI UJIAN NASIONAL SMA DAN AKREDITASI SEKOLAH
Authors: Mongi Charles E. 
Published: July 2019

ABSTRAK Pendidikan memiliki peranan yang sangat penting bagi setiap individu mulai dari usia dini sampai usia lanjut. Jenjang pendidikan terdiri dari jenjang pendidikan dasar, menengah dan tinggi. Penelitian ini membahas posisi relatif kabupaten/kota di Provinsi Jawa Barat terhadap nilai UN dan akreditasi sekolah menengah atas dan penggerombolan sekolah di Provinsi Jawa Barat. Hasil analisis biplot menghasilkan tujuh kelompok sekolah. Kelompok pertama berada di rata-rata nilai UN dan akreditasi. Kelompok kedua cenderung rendah pada nilai UN dan akreditasi. Kelompok ketiga rendah pada nilai UN. Kelompok empat tinggi pada nilai akreditasi. Kelompok lima tinggi pada nilai UN. Kelompok enam cenderung tinggi pada nilai UN eksak. Kelompok tujuh rendah pada nilai UN dan akreditasi. Kata kunci: Nilai UN, Akreditasi, Biplot MAPPING SENIOR HIGH SCHOOL IN WEST JAVA BASED NATIONAL EXAMINATION VALUE AND SCHOOL ACCREDITATION ABSTRACT Education has important role for individuals from childhood to the elderly. Educational levels consists primary education, secondary education and higher education. This study discussed the relative position of the districts in West Java Province throughout the national examination and high school accreditationas as well school clustering in West Java Province. Result of biplot analysis generated seven groups, first group were in the average national examination and accreditation. Second group were inclined low in national examination and also accreditation. The third group has a low national examination scores. The fourth group had a high score on the value of accreditation. Fifth group had a high value on national examination scores. The sixth group had inclined high national examination scores especially in science subjects. The seventh group had a low value on national examination and accreditation scores. Keywords: National Examination value, Accreditation, Biplot
PENGOPTIMALAN BIAYA DISTRIBUSI BERAS MISKIN DI PERUSAHAAN UMUM BADAN URUSAN LOGISTIK DIVISI REGIONAL SULAWESI UTARA DAN GORONTALO DENGAN MENGGUNAKAN METODE PENDEKATAN VOGEL
Authors: Pratama Raynaldi Yudha , Paendong Marline , Weku Winsy 
Published: July 2019

PENGOPTIMALAN BIAYA DISTRIBUSI BERAS MISKIN DI PERUSAHAAN UMUM BADAN URUSAN LOGISTIK DIVISI REGIONAL SULAWESI UTARA DAN GORONTALO DENGAN MENGGUNAKAN METODE PENDEKATAN VOGELABSTRAK Raskin merupakan salah satu dari berbagai program pemerintah Indonesia yang bertujuan untuk meningkatkan ketahanan pangan nasional melalui penyaluran beras bersubsidi bagi rumah tangga miskin. Dalam pelaksanaannya, raskin memiliki tim koordinasi yang terdiri dari beberapa lembaga negara di mana salah satunya Perusahaan Umum Badan Urusan Logistik (Perum Bulog).Penelitian ini bertujuan untuk mengoptimalkan biaya distribusi beras miskin di Sulawesi Utara dari 5 gudang ke 15 tujuan selama tahun 2016 . Penelitian ini dilakukan di perusahaan Umum Badan Urusan Logistik Divisi Regional Sulawesi Utara dan Gorontalo. Adapun kegunaan dari penelitian ini untuk mengatur alokasi pendistribusian beras miskin perusahaan sehingga mendapat biaya yang optimal. Metode analisis yang digunakan adalah menggunakan metode pendekatan vogel. Dari hasil penelitian dan perhitungan dengan program riset operasi diperoleh hasil bahwa perusahaan mengeluarkan biaya distribusi beras miskin selama tahun 2016 sebesar Rp.5.282.261.280.Kata Kunci: Metode Pendekatan Vogel, Beras Miskin, Sulawesi Utara, Gorontalo. THE OPTIMIZATION OF BERAS MISKIN DISTRIBUTION COSTS IN THE PUBLIC LOGISTICS COMPANY, REGIONAL DIVISION OF NORTH SULAWESI AND GORONTALO USING VOGEL APPROXIMATION METHOD ABSTRACTBeras miskin is one of the Indonesia government programs that aim to increase the endurance of national food through subsidized rice for the poor. In the case of realization, Beras miskin has several state institutions that included to manage it, one of them is the public logistics company. This research aims to optimize the distribution costs of Beras miskin in North Sulawesi from 5 warehouses to 15 destinations during 2016. This research has been done at The Public Logistics company, Regional Division of North Sulawesi and Gorontalo. The purpose of this research is to manage the company’s to distribute Beras Miskin with optimal cost. The Method that used in this research is Vogel approximation Method. The results of this research is the company expel the distribution costs of Beras miskin during 2016 amounts Rp.5.282.261.280. Keywords: Vogel Approximation Method, Beras Miskin, North Sulawesi, Gorontalo
UJI VIABILITAS DAN VIGOR BIJI SIRSAK (Annona muricata L.) SETELAH APLIKASI KALIUM NITRAT (KNO3)
Authors: Rori Hillary Firginia , Rampe Henny Lieke , Rumondor Marhaenus 
Published: July 2019

UJI VIABILITAS DAN VIGOR BIJI SIRSAK (Annona muricata L.) SETELAH APLIKASI KALIUM NITRAT (KNO3) ABSTRAKPenelitian ini bertujuan menentukan viabilitas dan vigor biji sirsak (Annona muricata L.) setelah aplikasi kalium nitrat (KNO3). Penelitian dilaksanakan di Laboratorium Biologi Dasar Fakultas MIPA Universitas Sam Ratulangi pada bulan Desember Tahun 2017 – Maret Tahun 2018. Penelitian menggunakan rancangan acak lengkap (RAL) dengan tiga kali ulangan. Perlakuan konsentrasi KNO3 dengan empat taraf perlakuan yaitu KNO3 0% (K0), KNO3 1%(K1), KNO3 2% (K2) dan KNO3 3% (K3). Parameter yang diamati adalah potensial berkecambah, keserampakan perkecambahan, indeks vigor dan koefisien vigor. Hasil penelitian menunjukkan aplikasi KNO3 berpengaruh nyata terhadap potensial berkecambah biji sirsak (Sig= 0,00) pada taraf uji 0,05. Hasil pengamatan potensial berkecambah pada biji sirsak mencapai 100% pada 21 hari sesudah tanam (HST) dibandingkan kontrol yang berkecambah 100% pada 33 HST. Nilai keserampakan perkecambahan pada pengamatan hari ke 16, untuk perlakuan K2 dan K3 yaitu 6,65%. Pengamatan vigor biji sirsak diperoleh nilai indeks vigor yaitu 37,23 dan koefisien vigor yaitu 24.000. Pemberian KNO3 dapat meningkatkan viabilitas dan vigor biji sirsak.Kata kunci: Biji Sirsak, Viabilitas, Vigor, KNO3 TEST OF VIABILITY AND VIGOR SOUROPS SEEDS (Annona muricata L.) AFTER BEING APPLICATION KALIUM NITRAT (KNO3)ABSTRACTThis study aims to determine the viability and vigor of soursop seeds (Annona muricata L.) after application of potassium nitrate (KNO3). The research was conducted at Basic Biology Laboratory of Faculty of Mathematics and Natural Sciences of Sam Ratulangi University in December 2017 - March 2018. The research used completely randomized design (RAL) with three replications. Treatment of KNO3 concentration with four treatment levels were KNO3 0% (K0), KNO3 1% (K1), KNO3 2% (K2) and KNO3 3% (K3). The observed parameters were germination potential, germination performance, vigor index and vigor coefficient. The result showed that KNO3 application had significant effect on viability of soursop seeds including germination potential (Sig = 0,00) at the test level 0,05. Germination effect on the 16th day of K2 and K3 treatment, ie 6.65%. Potential germination observations on soursop seeds reached 100% at 21 HST compared to 100% germination control at 33 HST. Vigor seeds obtained vigor index value is 37.23 and vigor coefficient is 24. Aplication KNO3 rising viability and vigor sourops seed.Keywoards : Soursop seed, Viabilitas, Vigor, KNO3
STANDING-STOCK BIOMASS AND DIVERSITY OF Caulerpa (Chlorophyta) IN SOLONG-ON, SIQUIJOR ISLAND, PHILIPPINES
Authors: Llamas J.C. Emmanuel G. , Bucol Lilibeth A. , Wagey Billy T 
Published: July 2019

ABSTRAKSpesies Caulerpa yang tumbuh di perairan dangkal sampai dilaut dalam dianggap sebagai gangguan ekonomi dan penting. Meskipun invasif di daerah beriklim sedang, spesies Caulerpa terutama C. racemosa dan C. lentillifera (lato) dipanen dan dikonsumsi sebagai makanan, terutama di Filipina. Komunitas Caulerpa di Solong-on, Siquijor adalah salah satu sumber untuk ekspor ke kota tetangga. Penelitian ini bertujuan untuk menentukan stok tegakan biomassa saat ini, prosentase dan keragaman Caulerpa di Solong-on, serta untuk menentukan parameter lingkungan yang dapat mempengaruhi kelimpahan dan keragamannya. Hasil penelitian menunjukkan total delapan spesies Caulerpa diidentifikasi di komunitas Caulerpa dangkal di Solong-on, Siquijor. Biomasa yang memiliki stok tertinggi diperoleh oleh C. cupressoides dengan biomassa rata-rata 26,16 ± 2,44 (SE) g berat kering/m-2, sedangkan C. microphysa memiliki biomassa stok yang berdiri paling sedikit dengan rata-rata 9,16 ± 0,26 g berat kering/m-2. Secara umum, total biomassa stok berdiri untuk semua spesies yang diperoleh selama periode sampling adalah 132,57 ± 2,06 g berat kering/m-2. Indeks keragaman Shannon-Wiener (H ') berkisar dari 1,7-2 yang menunjukkan komunitas Caulerpa yang relatif beragam. Analisis korespondensi kanonik (CCA) mengungkapkan bahwa suhu dan jenis substrat adalah pendorong utama biomassa Caulerpa.Kata Kunci: biomassa, Caulerpa, tutupan, makroalga, parameter fisika-kimia ABSTRACTCaulerpa species growing on shallow to deep waters are considered to be both economically nuisance and important. Although invasive in the temperate regions, Caulerpa species mainly C. racemosa and C. lentillifera (lato) are harvested and consumed as food, especially in the Philippines. Caulerpa communities in Solong-on, Siquijor are one of the sources for export to neighbouring municipalities. This study aimed to determine the present standing stock biomass, percent cover and diversity of Caulerpa in Solong-on, as well as to determine the environmental parameters that may affect its abundance and diversity. The results showed a total of eight species of Caulerpa were identified in the shallow Caulerpa community in Solong-on, Siquijor. The highest standing stock biomass was obtained by C. cupressoides with mean biomass of 26.16±2.44 (SE) g dry wt m-2, whereas C. microphysa has the least standing stock biomass with an average mean of 9.16±0.26 g dry wt m-2. In general, the total standing stock biomass for all species obtained throughout the sampling period was 132.57±2.06 g dry wt m-2. Shannon-Wiener diversity index (H') ranged from 1.7-2 suggesting a relatively diverse Caulerpa community. Canonical correspondence analysis (CCA) revealed that temperature and type of substrate were the main drivers of Caulerpa biomass.Key Words: biomass, Caulerpa, cover, macroalgae, physic-chemical parameters
Revealing the Stellar Mass and Dust Distributions of Submillimeter Galaxies at Redshift 2
Authors: Lang Philipp , Schinnerer E. , Smail Ian , Dudzevičiūtė U. , Swinbank A. M. , Liu Daizhong , Leslie S. K. , Almaini O. , An Fang Xia , Bertoldi F. , Blain A. W. , Chapman S. C. , Chen Chian-Chou , Conselice C. , Cooke E. A. , Coppin K. E. K. , Dunlop J. S. , Farrah D. , Fudamoto Y. , Geach J. E. , Gullberg B. , Harrington K. C. , Hodge J. A. , Ivison R. J. , Jiménez-Andrade E. F. , Magnelli B. , Michałowski M. J. , Oesch P. , Scott D. , Simpson J. M. , Smolčić V. , Stach S. M. , Thomson A. P. , Toft S. , Vardoulaki E. , Wardlow J. L. , Weiss A. , Werf P. van der 
Published: July 2019

Abstract
We combine high-resolution ALMA and HST/CANDELS observations of 20 submillimeter galaxies (SMGs), predominantly from the AS2UDS survey at z ≃ 2, with bright rest-frame optical counterparts (

) to investigate the resolved structural properties of their dust and stellar components. We derive two-dimensional stellar-mass distributions that are inferred from spatial mass-to-light ratio (

) corrections based on rest-frame optical colors. Due to the high central column densities of dust in our SMGs, our mass distributions likely represent a lower limit to the true central mass density. The centroid positions between the inferred stellar-mass and the dust distributions agree within 1.1 kpc, indicating an overall good spatial agreement between the two components. The majority of our sources exhibit compact dust configurations relative to the stellar component (with a median ratio of effective radii

= 0.6). This ratio does not change with specific star formation rate over the factor of 30 spanned by our targets, sampling the locus of “normal” main-sequence galaxies up to the starburst regime,

. Unlike typical spiral galaxies in the local universe, our results imply that massive SMGs are experiencing centrally enhanced star formation. The sizes and stellar densities of our SMGs are in agreement with those of the passive population at z = 1.5, which is consistent with these systems being the descendants of z ≃ 2 SMGs.
On the Efficiency of the Linear-mode Conversion for Generation of Solar Type III Radio Bursts
Authors: Krasnoselskikh Vladimir , Voshchepynets Andrii , Maksimovic Milan 
Published: July 2019

Abstract
Type III solar radio bursts are generated by streams of energetic electrons accelerated at the Sun during periods of solar activity. The generation occurs in two steps. Initially, electron beams generate electrostatic Langmuir waves and then these waves are transformed into electromagnetic emissions. Recent studies showed that the level of density fluctuations in the solar wind and in the solar corona is so high that it may significantly affect beam–plasma interaction. Here, we show that the presence of intense density fluctuations not only crucially influences the process of beam–plasma interaction, but also changes the mechanism of energy transfer from electrostatic waves into electromagnetic. Reflection of the Langmuir waves from the density inhomogeneities may result in partial transformation of the energy of electrostatic waves into electromagnetic around plasma frequency. We show that the linear wave energy transformation for the level of fluctuations of the order of 1% or higher is efficient enough to produce radio bursts with a brightness temperature of 1014–1015 K.
Asymmetric Dark Matter Imprint on Low-mass Main-sequence Stars in the Milky Way Nuclear Star Cluster
Authors: Lopes José , Lopes Ilídio 
Published: July 2019

Abstract
In this work, we study the impact of asymmetric dark matter (ADM) on low-mass main-sequence stars in the Milky Way’s nuclear star cluster, where the dark matter (DM) density is expected to be orders of magnitude above what is found near the Sun (

). Using a modified stellar evolution code and considering a DM particle (m

χ
= 4 GeV) with a spin-dependent interaction cross section close to the limits allowed by direct detection, we found that the interactions of ADM with baryons in the star’s core can have two separate effects on the evolution of these stars: a decrease in the hydrogen burning rate, extending the duration of the main-sequence of stars with M ∼ 1M
⊙ by a few Gyr; the suppression of the onset of convection in the core of stars with M ≲ 1.5M
⊙ and consequent quench of supply for the nuclear reactions. If we consider ρ
DM > 103 GeV cm−3 (corresponding to the inner 5 pc of the Milky Way), stars lighter than the Sun will have a main-sequence life span comparable to the current age of the universe. Stars heavier than two solar masses are not sensitive to the DM particles considered here.
A Temporary Epoch of Stalled Spin-down for Low-mass Stars: Insights from NGC 6811 with Gaia and Kepler
Authors: Curtis Jason Lee , Agüeros Marcel A. , Douglas Stephanie T. , Meibom Søren 
Published: July 2019

Abstract
Stellar rotation was proposed as a potential age diagnostic that is precise, simple, and applicable to a broad range of low-mass stars (

1

). Unfortunately, rotation period (

) measurements of low-mass members of open clusters have undermined the idea that stars spin down with a common age dependence (i.e.,

): K dwarfs appear to spin down more slowly than F and G dwarfs. Agüeros et al. interpreted data for the ≈1.4 Gyr-old cluster NGC 752 differently, proposing that after having converged onto a slow-rotating sequence in their first 600–700 Myr (by the age of Praesepe), K dwarf

stall on that sequence for an extended period of time. We use data from Gaia DR2 to identify likely single-star members of the ≈1 Gyr-old cluster NGC 6811 with Kepler light curves. We measure

for 171 members, more than doubling the sample relative to the existing catalog and extending the mass limit from

to ≈0.6

. We then apply a gyrochronology formula calibrated with Praesepe and the Sun to 27 single G dwarfs in NGC 6811 to derive a precise gyrochronological age for the cluster of 1.04 ± 0.07 Gyr. However, when our new low-mass rotators are included, NGC 6811's color–

sequence deviates away from the naive 1 Gyr projection down to

K (K5V, 0.7

), where it clearly overlaps with Praesepe’s. Combining these data with

for other clusters, we conclude that the assumption that mass and age are separable dependencies is invalid. Furthermore, the cluster data show definitively that stars experience a temporary epoch of reduced braking efficiency where

stall, and that the duration of this epoch lasts longer for lower-mass stars.
Polarized Line Formation in Spherically Symmetric Atmospheres with Velocity Fields
Authors: Megha A. , Sampoorna M. , Nagendra K. N. , Anusha L. S. , Sankarasubramanian K. 
Published: July 2019

Abstract
The plane–parallel approximation of the stellar atmospheres cannot be applied to model the formation of optically thick lines formed in extended atmospheres. To a good approximation these atmospheres can be represented by a spherically symmetric medium. Such extended stellar atmospheres are dynamic, in general, due to the systematic motions present in their layers. Macroscopic velocity fields in the spectral line forming regions produce Doppler shift, aberration of photons, and also give rise to advection. All of these effects can modify the amplitudes and shapes of the emergent Stokes profiles. In the present paper we consider the problem of polarized line formation in spherically symmetric media, in the presence of velocity fields. Solving the radiative transfer problem in the observer’s frame is a straightforward approach to handle the presence of velocity fields. This method, however, becomes computationally prohibitive when large velocity fields are considered, particularly in the case of the line formation with partial frequency redistribution (PFR). In this paper we present a polarized comoving frame method to solve the problem at hand. We consider nonrelativistic radial velocity fields, thereby accounting only for Doppler shift effects and neglecting advection and aberration of photons. We study the effects of extendedness, velocity fields, and PFR on the polarized line profiles formed in highly extended atmospheres.