bluuebunny/crossref_metadata_2025_split huggingface dataset:
DAMPAK HARMONISA TERHADAP PENINGKATAN TEMPERATUR TRANSFORMATOR DISTRIBUSI 1000 kVA DI POLITEKNIK ENJINERING INDORAMA
Authors: Suryadi Aris 
Published: November 2017

Transformator distribusi memiliki peran penting dalam mendistribusikan tenaga listrik sehingga peran transformator ini untuk beroperasi dengan baik harus dalam kondisi stabil. Salah satu kondisi yang mengganggu beroperasinya adalah gangguan harmonisa yang terjadi pada sistem distribusi tenaga listrik akibat terjadinya distorsi gelombang arus dan tegangan.Kandungan harmonisa yang tinggi pada jaringan sistem tenaga listrik akan menyebabkan transformator distribusi mengalami temperatur berlebih dan apabila tidak segera ditangani maka usia pengoperasian transformator lebih singkat.Salah satu perangkat yang dapat merusak transformator distribusi adalah beban non-linear, diantaranya yang terdapat pada Kampus Politeknik Enjinering Indorama sebagai sebagian penyumbang harmonisa yang terjadi seperti komputer, refrigerator, air conditioning disetiap ruang kelas, peralatan elektronika laboratorium, serta adjustable speed drive (ASD) yang terdapat pada unit mesin Drawn Texture Yarn (DTY).Penelitian ini dilakukan untuk mengetahui harmonisa dan pengaruhnya terhadap peningkatan temperatur pada transformator distribusi 1000 kVA yang terdapat di area Politeknik Enjinering Indorama dengan cara melakukan pengukuran harmonisa pada transformator distribusi dalam keadaan berbeban. Pembebanan transformator sesuai dengan beban operasional dalam melaksanakan kegiatan akademik dan admistratif serta laboratorium.Kata kunci: harmonisa, temperatur, transformator
SISTEM INFORMASI PELAYANAN TAGIHAN REKENING DAN PENGADUAN PELANGGAN BERBASIS SMS GATEWAY DI PDAM KOTA TEGAL
Authors: Murtopo Aang Alim , Angesti Devi Cici 
Published: November 2017

Perusahaan Daerah Air Minum (PDAM) Kota Tegal merupakan perusahaan daerah (Perusda) yang bergerak melayani dan mendistribusikan kebutuhan air bersih di wilayah kota tegal sesuai Keputusan Menteri Pendayagunaan Aparatur Negara Nomor: KEP/25/M.PAN/2/2004 menjelaskan bahwa pelayanan publik adalah segala kegiatan yang dilaksanakan oleh penyelenggara pelayanan publik sebagai upaya pemenuhan kebutuhan penerima pelayanan, maupun dalam rangka pelaksanaan ketentuan peraturan perundang-undangan. Permasalahan yang dihadapi adalah untuk mengetahui tagihan rekening pemakaian air dan jika ada pengaduan (komplain) pelanggan harus datang langsung kekantor PDAM ataupun melalui telepon, antrian yang terjadi, jarak yang jauh atau biaya telepon menjadi kendala utamanya. Selain itu proses yang begitu rumit menjadi tidak efektif dan efisien karena akan memakan waktu yang relatif lama. Dari analisis diperoleh hasil dengan ditemukannya kebutuhan-kebutuhan yang diperlukan untuk perangkat lunak yang dibangun.Analisis dilakukan dengan menganalisa kebutuhan sistem user dan fasilitas yang dibutuhkan oleh perangkat lunak. Berdasarkan hasil analisis, maka dirancanglah sebuah perangkat lunak yang dapat menangani tagihan rekening pemakaian air, dan pengaduan konsumen berbasis SMSGATEWAY. Perangkat lunak ini dapat meningkatkan kinerja dari tiap bagian, dan informasi yang dibutuhkan masing-masing bagian dihasilkan secara tepat, cepat dan akurat.Sehingga bisa menunjang kelancaran kegiatan pengolahan data pada PDAM Kota Tegal. Sistem yang dibangun ini mempunyai kelebihan kemudahan dan juga kecepatannya.Sehingga pihak PDAM bisa mengirimkan informasi kepada pelanggan tentang informasi tagihan rekening pemakaian air sebelum tanggal jatuh tempo agar pelanggan dapat menerima informasi tepat waktu dan pelanggan menjadi tidak terlambat dalam membayar tagihan.
TERAPAN KOMBINASI METODE TOPSIS DAN ANALYTICAL HIERARCHY PROCESS PADA PEREKOMENDASIAN PENERIMA BEASISWA PENINGKATAN PRESTASI AKADEMIK (Studi Kasus pada STMIK PPKIA Tarakanita Rahmawati)
Authors: Fadlan Muhammad , Muhammad Muhammad , - Hadriansa 
Published: November 2017

Beasiswa Peningkatan Prestasi Akademik (PPA) sebagai salah satu bentuk dukungan pemerintah Republik Indonesia terhadap dunia pendidikan. Beasiswa yang disalurkan oleh pemerintah melalui Perguruan Tinggi yang ada di Indonesia ini, penyeleksian dan penetapan penerimanya sepenuhnya diserahkan kepada pihak Perguruan Tinggi yang bersangkutan. Tahap inilah yang sangat rentan terjadinya kecurangan. Pada objek penelitian yang diteliti hingga saat ini proses penyeleksian masih dilakukan dengan menggunakan Microsoft Excel, hal ini tentu saja kurang efektif dan efisien, serta rentan akan terjadinya kesalahan bahkan kecurangan. Untuk itu, diperlukan suatu metodologi dan aplikasi yang tepat dalam melakukan penyeleksian penerima beasiswa tersebut. Decision Support System digunakan sebagai solusi untuk melakukan perekomendasian penerima beasiswa, khususnya dengan menggunakan Metode Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) dan Analytical Hierarcy Process (AHP). Penggunaan kombinasi dua metode tersebut dilakukan agar memiliki tingkat akurasi yang baik jika dibandingkan dengan menggunakan satu metode. Hasilnya, aplikasi decision support system dengan penerapan kombinasi metode Topsis dan AHP berhasil di rancang dan di ujicoba, serta sukses dalam perekomendasian penerima beasiswa PPA dengan menghasilkan data alternatif mahasiswa yang terurut mulai dari nilai preferensi yang paling tinggi 0.764 hingga terendah 0.189. Hasil ini dapat menjadi rekomendasi bagi pengambil keputusan dalam mengambil keputusan yang efektik, efisien dan dapat dipertanggung jawabkan.
ANALISIS KECEPATAN PERGERAKAN STATION GNSS CORS UDIP
Authors: Yuwono Bambang D , Awaluddin M. , Hapsari Widi 
Published: November 2017

<div class="WordSection1"><p align="center"><strong>ABSTRAK</strong><strong></strong></p><p>Teknologi GNSS berkembang pesat seiring dengan adanya sistem pengadaan titik kontrol dasar modern yang digunakan sebagai referensi untuk penentuan posisi. Sistem tersebut dikenal dengan CORS (<em>Continously Operating Reference System </em>). Station GNSS CORS juga dikembangkan di Departemen Geodesi Fakultas Teknik UNDIP pada akhir tahun 2012 dengan nama CORS UDIP. Instalasi GNSS CORS UDIP didasarkan pada kebutuhan keperluan survei, model matematis geodesi, dan pemrosesan sinyal digital. Analisis terhadap kecepatan pergerakan stasiun GNSS CORS UDIP perlu dilakukan untuk keperluan tersebut. Tujuan penelitian untuk mendapatkan nilai kecepatan pergerakan station GNSS CORS UDIP periode 2013 s.d. 2016. Metode yang digunakan adalah pengolahan jaring dengan pengikatan ke 9 stasiun IGS. Hasil penelitian menunjukkan bahwa stasiun GNSS CORS UDIP dalam periode 2013 s.d. 2016 memiliki kecepatan pergerakan 0,08 cm dalam arah <em>east</em> dan 0,36 cm dalam arah <em>north</em>.</p><p><strong>Kata kunci</strong>: GNSS CORS, kecepatan pergerakan, pemrosesan data digital</p></div><p><em><strong><br clear="all" /> </strong></em></p><p align="center"><strong><em>ABSTRACT</em></strong><em></em></p><p><em>GNSS technology is growing rapidly along with the procurement system of modern basic control points as a reference for positioning. This system is known as CORS (Continously Operating Reference System). GNSS CORS Station is also developed in the Department of Geodesy Faculty of Engineering UNDIP at the end of 2012. The GNSS CORS Station name is CORS UDIP. Installation of GNSS CORS UDIP is based on survey needs, geodetic mathematical models, and digital signal processing. An analysis of the movement speed of GNSS CORS UDIP stations is necessary for this purpose. Coordinate Sta GNSS UDIP was calculated using network processing method with 9 sta IGS (International GNSS Service) as reference stations. The results of analysis showed that GNSS UDIP in the period of 2013-2016 had velocity rate 0.08 cm in the east and 0.36 cm in the north.</em></p><p><strong><em>Keywords: </em></strong><em>GNSS<strong> </strong>CORS, velocity rate, digital signal processing</em><em></em></p><p><em><br /></em></p>
High temperature tensile behavior of Mg-2Al and Mg-6Al alloys
Authors: Qiao Jun , Zheng Long , Ji Jiaxing , Bian Fubo , He Min , Niu Tiangang 
Published: November 2017

Abstract
Effects of 2 and 6 wt.% Al additions on the high temperature tensile behavior of Mg were investigated. Elongation-to-failure tensile tests were conducted at four temperatures (300, 350, 400, and 450 °C) and two strain rates (10−
2 and 10−3 s−1) to study tensile ductility. Strain-rate-change tensile tests were conducted at the same temperatures over a strain-rate range of 5 × 10−5–2 × 10−2 s−1. The experimental data show that the coarse-grained alloys exhibit elongations of about 100% at 450 °C and 10−3 s−1, and the Mg-6Al alloy presents a significant elongation improvement at 400 and 450 °C. Compared with pure Mg, Al additions of 2 and 6 wt.% effectively reduce the stress exponent, which decreases with increasing Al content. The reduced stress exponents may result from solute-drag creep created by Al atoms released from dissolution of Mg17Al12 phase at high temperatures.
Hydrogen sorption and corrosion properties of La2Ni9CoSn0.2alloy
Authors: Giza Krystyna , Adamczyk Lidia , Drulis Henryk , Hackemer Alicja 
Published: November 2017

AbstractThe hydrogenation and corrosion behaviour of La2Ni9 · CoSn0.2alloy was analysed in respect of its use in Ni–MH batteries. It has been proved that the presence of tin in the alloy causes a decrease in hydrogen equilibrium pressure. In the electrochemical studies several techniques, such as chronopotentiometry, multi-potential steps, linear sweep voltammetry and the potentiokinetic polarization were applied to characterize the electrochemical properties of a La2Ni9CoSn0.2powder composite electrode. During long cycling, powder particles undergo micro-cracking or other forms of surface development causing a progressive increase in the exchange current density of the H2O/H2system, but, on the other hand, this increase favours corrosion processes such as the electrode material's oxidation. This is also reflected in the capacity loss values.
Solid-state synthesis and magnetic properties of rhombohedral phase Mg2SiNi3
Authors: Wang Liangbiao , Zhao Dejian , Lu Juanjuan , Liu Weiqiao , Zhou Quanfa 
Published: November 2017

Abstract
A solid-state route was developed to prepare rhombohedral phase Mg2SiNi3 with the dimensions of about 300 nm by using metallic magnesium, nickel oxide and silicon as starting materials at 700 °C in an autoclave reactor. The obtained product was investigated by means of X-ray diffraction, scanning electron microscopy and transmission electron microscopy. Magnetic measurement at room temperature indicated that the values of saturation magenetization and coercivity of the obtained Mg2SiNi3 were 0.31 emu g–1 and 65.20 Oe, respectively.
American amphitropical disjuncts: Perspectives from vascular plant analyses and prospects for future research
Authors: Simpson Michael G. , Johnson Leigh A. , Villaverde Tamara , Guilliams C. Matt 
Published: November 2017

PREMISE OF THE STUDY:Historical patterns and processes of plants with an American amphitropical disjunct (AAD) distribution have long interested botanists and biogeographers. Here we update examples of AAD vascular plants, their biogeographic history, and aspects of their biology elucidated by recent studies to make inferences about common patterns of AAD plants and formulate future research questions.METHODS:All known examples of AAD vascular plants were tabulated, along with data on plant duration and habit, chromosome number, dispersal direction, and divergence time. The data were then compared with regard to taxonomic categories, AAD bioregions, and character evolution.KEY RESULTS:We clarify the definition of amphitropical and summarize features of AAD plants. We identify 237 AAD plant divergence events. Timing of these events generally corresponds with taxonomic category. Plant duration and habit are associated with AAD bioregions. Increases in chromosome number mostly occurred in members of the recipient area. The AAD plants of bipolar or temperate bioregions entirely or largely dispersed from North to South America, whereas almost half of desert plants dispersed from South to North America.CONCLUSIONS:Tabulating AAD plants by taxonomic group and bioregion yields insight into character evolution and processes of divergence. Phylogenetic studies provide information on the timing and direction of dispersal. However, more research on AAD plants is needed to draw inferences regarding general patterns and processes, especially those at the clade level. Our AAD Working Group website provides current information on AAD vascular plants to aid workers doing research in this field.
An SMA Continuum Survey of Circumstellar Disks in the Serpens Star-forming Region
Authors: Law Charles J. , Ricci Luca , Andrews Sean M. , Wilner David J. , Qi Chunhua 
Published: November 2017

Abstract
We present observations with the Submillimeter Array of the continuum emission at

from 62 young stars surrounded by a protoplanetary disk in the Serpens star-forming region. The typical angular resolution for the survey in terms of beam size is

with a median rms noise level of 1.6 mJy beam−1. These data are used to infer the dust content in disks around low-mass stars

at a median stellar age of 1–3 Myr. Thirteen sources were detected in the 1.3 mm dust continuum with inferred dust masses of

and an upper limit to the median dust mass of

, derived using survival analysis. Comparing the protoplanetary disk population in Serpens to those of other nearby star-forming regions, we find that the populations of dust disks in Serpens and Taurus, which have a similar age, are statistically indistinguishable. This is potentially surprising as Serpens has a stellar surface density two orders of magnitude in excess of Taurus. Hence, we find no evidence that dust disks in Serpens have been dispersed as a result of more frequent and/or stronger tidal interactions due to its elevated stellar density. We also report that the fraction of Serpens disks with

is less than 20%, which supports the notion that the formation of giant planets is likely inherently rare or has substantially progressed by a few Myr.
Interstellar Silicon Depletion and the Ultraviolet Extinction
Authors: Mishra Ajay , Li Aigen 
Published: November 2017

Abstract
Spinning small silicate grains were recently invoked to account for the Galactic foreground anomalous microwave emission. These grains, if present, will absorb starlight in the far-ultraviolet (UV). There is also renewed interest in attributing the enigmatic

2175

Å

interstellar extinction bump to small silicates. To probe the role of silicon in the UV extinction, we explore the relations between the amount of silicon required to be locked up in silicates

[

Si

/

H

]

dust

and the

2175

Å

bump or the far-UV extinction rise, based on an analysis of the extinction curves along 46 Galactic sightlines for which the gas-phase silicon abundance

[

Si

/

H

]

gas

is known. We derive

[

Si

/

H

]

dust

either from

[

Si

/

H

]

ISM

−

[

Si

/

H

]

gas

or from the Kramers–Kronig relation, which relates the wavelength-integrated extinction to the total dust volume, where

[

Si

/

H

]

ISM

is the interstellar silicon reference abundance and taken to be that of proto-Sun or B stars. We also derive

[

Si

/

H

]

dust

from fitting the observed extinction curves with a mixture of amorphous silicates and graphitic grains. We find that in all three cases

[

Si

/

H

]

dust

shows no correlation with the

2175

Å

bump, while the carbon depletion

[

C

/

H

]

dust

tends to correlate with the

2175

Å

bump. This supports carbon grains instead of silicates as the possible carriers of the

2175

Å

bump. We also find that neither

[

Si

/

H

]

dust

nor

[

C

/

H

]

dust

alone correlates with the far-UV extinction, suggesting that the far-UV extinction is a combined effect of small carbon grains and silicates.
Average Spectral Properties of Type Ia Supernova Host Galaxies
Authors: Uddin Syed A , Mould Jeremy , Wang Lifan 
Published: November 2017

Abstract
We construct the average spectra of host galaxies of slower, faster, bluer, and redder Type Ia supernovae (SNe Ia) from the SDSS-II supernova survey. The average spectrum of slower declining (broader light curve width or higher stretch) SN Ia hosts shows stronger emission lines compared to the average spectrum of faster declining (narrower light curve width or lower stretch) SN Ia hosts. Using pPXF, we find that hosts of slower declining SNe Ia have metallicities that are, on average, 0.24 dex lower than average metallicities of faster declining SN Ia hosts. Similarly, redder SN Ia hosts have slightly higher metallicities than bluer SN Ia hosts. Lick index analysis of metallic lines and Balmer lines shows that faster declining SN Ia hosts have relatively higher metal content and have relatively older stellar populations compared with slower declining SN Ia hosts. We calculate average

star formation rate (SFR), stellar mass, and the specific SFR (sSFR) of host galaxies in these subgroups of SNe Ia. We find that slower declining SN Ia hosts have significantly higher (

) sSFR than faster declining SN Ia hosts. A Kolmogorov–Smirnov test shows that these two types of hosts originate from different parent distributions. Our results, when compared with the models of Childress et al., indicate that slower declining SNe Ia, being hosted in actively star-forming galaxies, are young (prompt) SNe Ia, originating from similar progenitor age groups.
The Lopsidedness of Satellite Galaxy Systems in ΛCDM Simulations
Authors: Pawlowski Marcel S. , Ibata Rodrigo A. , Bullock James S. 
Published: November 2017

Abstract
The spatial distribution of satellite galaxies around pairs of galaxies in the Sloan Digital Sky Survey (SDSS) have been found to bulge significantly toward the respective partner. Highly anisotropic, planar distributions of satellite galaxies are in conflict with expectations derived from cosmological simulations. Does the lopsided distribution of satellite systems around host galaxy pairs constitute a similar challenge to the standard model of cosmology? We investigate whether such satellite distributions are present around stacked pairs of hosts extracted from the ΛCDM simulations Millennium-I, Millennium-II, Exploring the Local Volume in Simulations, and Illustris-1. By utilizing this set of simulations covering different volumes, resolutions, and physics, we implicitly test whether a lopsided signal exists for different ranges of satellite galaxy masses, and whether the inclusion of hydrodynamical effects produces significantly different results. All simulations display a lopsidedness similar to the observed situation. The signal is highly significant for simulations containing a sufficient number of hosts and resolved satellite galaxies (up to

for Millennium-II). We find a projected signal that is up to twice as strong as that reported for the SDSS systems for certain opening angles (∼16% more satellites in the direction between the pair than expected for uniform distributions). Considering that the SDSS signal is a lower limit owing to likely back- and foreground contamination, the ΛCDM simulations appear to be consistent with this particular empirical property of galaxy pairs.
Analytic Scattering and Refraction Models for Exoplanet Transit Spectra
Authors: Robinson Tyler D. , Fortney Jonathan J. , Hubbard William B. 
Published: November 2017

Abstract
Observations of exoplanet transit spectra are essential to understanding the physics and chemistry of distant worlds. The effects of opacity sources and many physical processes combine to set the shape of a transit spectrum. Two such key processes—refraction and cloud and/or haze forward-scattering—have seen substantial recent study. However, models of these processes are typically complex, which prevents their incorporation into observational analyses and standard transit spectrum tools. In this work, we develop analytic expressions that allow for the efficient parameterization of forward-scattering and refraction effects in transit spectra. We derive an effective slant optical depth that includes a correction for forward-scattered light, and present an analytic form of this correction. We validate our correction against a full-physics transit spectrum model that includes scattering, and we explore the extent to which the omission of forward-scattering effects may bias models. Also, we verify a common analytic expression for the location of a refractive boundary, which we express in terms of the maximum pressure probed in a transit spectrum. This expression is designed to be easily incorporated into existing tools, and we discuss how the detection of a refractive boundary could help indicate the background atmospheric composition by constraining the bulk refractivity of the atmosphere. Finally, we show that opacity from Rayleigh scattering and collision-induced absorption will outweigh the effects of refraction for Jupiter-like atmospheres whose equilibrium temperatures are above 400–500 K.
AGILE Observations of the Gravitational-wave Source GW170817: Constraining Gamma-Ray Emission from an NS–NS Coalescence
Authors: Verrecchia F. , Tavani M. , Donnarumma I. , Bulgarelli A. , Evangelista Y. , Pacciani L. , Ursi A. , Piano G. , Pilia M. , Cardillo M. , Parmiggiani N. , Giuliani A. , Pittori C. , Longo F. , Lucarelli F. , Minervini G. , Feroci M. , Argan A. , Fuschino F. , Labanti C. , Marisaldi M. , Fioretti V. , Trois A. , Monte E. Del , Antonelli L. A. , Barbiellini G. , Caraveo P. , Cattaneo P. W. , Colafrancesco S. , Costa E. , D’Amico F. , Ferrari A. , Giommi P. , Morselli A. , Paoletti F. , Pellizzoni A. , Picozza P. , Rappoldi A. , Soffitta P. , Vercellone S. , Baroncelli L. , Zollino G. 
Published: November 2017

Abstract
The LIGO–Virgo Collaboration (LVC) detected, on 2017 August 17, an exceptional gravitational-wave (GW) event temporally consistent within

with the GRB 1708117A observed by Fermi-GBM and INTEGRAL. The event turns out to be compatible with a neutron star–neutron star (NS–NS) coalescence that subsequently produced a radio/optical/X-ray transient detected at later times. We report the main results of the observations by the AGILE satellite of the GW170817 localization region (LR) and its electromagnetic (EM) counterpart. At the LVC detection time T
0, the GW170817 LR was occulted by the Earth. The AGILE instrument collected useful data before and after the GW/GRB event because in its spinning observation mode it can scan a given source many times per hour. The earliest exposure of the GW170817 LR by the gamma-ray imaging detector started about 935 s after T
0. No significant X-ray or gamma-ray emission was detected from the LR that was repeatedly exposed over timescales of minutes, hours, and days before and after GW170817, also considering Mini-calorimeter and Super-AGILE data. Our measurements are among the earliest ones obtained by space satellites on GW170817 and provide useful constraints on the precursor and delayed emission properties of the NS–NS coalescence event. We can exclude with high confidence the existence of an X-ray/gamma-ray emitting magnetar-like object with a large magnetic field of

. Our data are particularly significant during the early stage of evolution of the EM remnant.