bluuebunny/crossref_metadata_2025_split huggingface dataset:
Kecenderungan Penumpang Menggunakan Moda Kereta Api Antar Kota Dengan Penerapan Protokol Kesehatan Di Era New Normal
Authors: Puspitasari Armyta , Priyanto Sapto 
Published: June 2022

ABSTRACT
Health protocol during Covid 19 Pandemic however can reduce the tendency of passengers in using trains as mode of transportation. The inter-city train health protocol is regulated in a circular letter from the Minister of Transportation regarding the guidelines and technical guidelines for rail transportation in the new normal era. The description of the behavior of inter-city train passengers with the application of health protocols is needed as a consideration in implementing further policies. This study uses situational variables, knowledge and personality as predictors of passengers' decisions to use trains with the application of health protocols. The research sample was 96 with random sampling technique. The data that has been collected is then tested with binary logistic regression to generate the tendency of passengers to use trains with the application of health protocols in the new normal era. The results of the study show that situational variables and passenger personalities influence passenger decisions in using the train mode in the new normal era.

Keywords: Health protocol, new normal era, consumer behavior, binary logistic regression
Analisis Perilaku Struktur Bantalan Kereta Api dengan Metode Elemen Hingga
Authors: Kurniawan Muhammad Adib , Adi Perwira Dimas , Leliana Arinda 
Published: June 2022

Bantalan kereta api di Indonesia rata – rata terbuat dari material beton bertulang, dalam Peraturan Menteri Perhubungan nomor 60 Tahun 2012 disebutkan bahwa persyaratan material beton bertulang yang dapat digunakan untuk bantalan kereta api adalah beton prategang. Metode Elemen Hingga (MEH) merupakan salah satu analisa numerik yang banyak digunakan untuk memecahkan masalah perhitungan struktur. Penggunaan MEH dengan aplikasi membantu mempermudah engineering untuk melakukan iterasi perhitungan, sehingga didapatkan hasil pendekatan yang menyerupai kondisi struktur sesungguhnya. Model bantalan beton kereta api yang digunakan adalah untuk lebar spoor 1067 mm dengan tipe N-67 produksi PT WIKA. Spesifikasi bantalan beton prategang dengan kuat tekan beton fc’ = 52 Mpa dan kuat tarik tulangan baja fy = 1400 Mpa. Properti material untuk memodelkan bantalan beton merujuk pada penelitian (Fistcar, 2019). Berdasarkan hasil analisa menggunakan software MEH didapatkan nilai tegangan tekan (compressive stress) bantalan beton sebesar 11,706 Mpa dan tegangan tarik (Tensile stress) bantalan beton sebesar 4,362 Mpa, selanjutnya untuk nilai lenduta (displacement) didapatkan hasil 0,083 mm terletak di tengah bantalan.
FORMATION FEATURES OF EFFECTIVE LOAD AND TECHNICAL CHARACTERISTICS OF UNMANNED AIRCRAFT SYSTEM OF SIGNAL RETRANSLATION FOR GROUND ROBOTIC SYSTEMS CONTROL
Authors: Лопухов Алексей Анатольевич , Осипов Юрий Николаевич , Ершов Владимир Иванович , Симанов Станислав Евгеньевич 
Published: June 2022

В статье рассматриваются вопросы возможности применения привязных телекоммуникационных платформ на основе беспилотных воздушных судов (БВС) для ретрансляции сигналов управления наземными робототехническими комплексами (РТК) при выполнении аварийно-спасательных работ в сложных условиях чрезвычайных ситуаций. Актуальность темы обусловлена необходимостью поиска способов защиты системы управления РТК от негативного влияния мощных источников тепла при пожаре, ионизирующего излучения, многочисленных помех, возникающих при плотной городской застройке, когда оператор должен быть удален от управляемого им комплекса на значительное безопасное расстояние.
The article considers the issues of possible using tethered telecommunication platforms on the base of unmanned aerial vehicles (UAV) for signal retranslation of ground robotic complexes (RTC) control when performing emergency rescue operations in emergencies. The relevance of the topic is due to the need to find ways to protect the RTC control system from the negative effects of powerful heat sources in case of fire, ionizing radiation and numerous interferences arising from dense urban development, when the operator must be removed from the complex at a considerable safe distance.
MISSILE FIRE EXTINGUISHING MEANS OF PULSE TYPE
Authors: Казаков Алексей Васильевич , Полтавец Денис Владимирович , Хатунцева Светлана Юрьевна , Григорьев Алексей Владимирович 
Published: June 2022

В проведенных многочисленных экспериментах было установлено, что зачастую эффективность при тушении очагов пожара с высокой динамикой развития обеспечивается средствами и способами тушения, позволяющими за короткое время с безопасного для оператора расстояния подать непосредственно в зону горения необходимое количество огнетушащего порошкового состава, оптимальное для его подавления [1-5]. Этой цели в наибольшей степени отвечает импульсный способ подачи.
As a result of numerous experiments it was found that often the effectiveness of fire extinguishing seats with high development dynamics is provided by means and methods of extinguishing, which allow for a short time from a safe for the operator distance to supply directly to the combustion zone the necessary amount of extinguishing powder composition optimal for its suppression [1-5]. The pulse feeding method meets this goal to the greatest extent.
Pengaruh Pemberian Jus Wortel Terhadap Penurunan Derajat Dismenore Pada Remaja Putri SMA Negeri 9 Pekanbaru
Authors: Daniel Martinus Ferry , Gunawan Dahlan , Frida Utari Siska 
Published: June 2022

Background
: During menstruation, the most common complaint is menstrual pain or what is known as dysmenorrhea. Dysmenorrhea is characterized by lower abdominal pain. Ways how to overcome dysmenorrhea can be done by various treatments, one of them is drinking nutritious herbal drinks, namely carrot juice. Giving carrot juice contains vitamin E and beta-carotene which can provide analgesic and anti-inflammatory effects with the mechanism of action, namely inhibiting the activity enzymes and cyclooxygenase-2 enzymes so that these enzymes cannot convert arachidonic acid into prostaglandins as a cause of pain. Method: This research method is Pre-Experimental with One Group Pretest Post Test Design which was conducted at SMA Negeri 9 Pekanbaru in November 2021. The number of samples was 66 young women who were taken using the Simple Purposive Sampling technique. The result was analyzed by using the Dependent Sample T Test. Result: The result of the Dependent Sample T Test shows that there is an effect of giving carrot juice in decreasing the degree of dysmenorrhea of adolescent girls of SMA Negeri 9 Pekanbaru with a p- value of 0.000 < 0.05. Conclusion: Based on the result of this study, it can be conclude that there is reduction of the degree of dysmenorrhea of adolescent girls of SMA Negeri 9 Pekanbaru after giving carrot juices. It is highly recommended to respondents to consume carrot juices during menstruation so that it can decreases the discomfort they feel.
Microbiological and Molecular Study of K1, K2 Genes among Klebsiella pneumoniae isolated from Urine Specimens in Duhok city, Iraq
Authors: Qasim Berivan Mohammed , Khalid Haval 
Published: June 2022

Klebsiella pneumoniae is a common cause of infections, particularly urinary tract infections (UTIs). Urine samples were taken from 800 patients with clinical indications of UTI who visited the inpatient and outpatient clinics from governorate hospitals and private clinics, namely, Azadi Teaching hospital, Duhok Emergency hospital, Heevi Pediatrics Teaching hospital and Vajeen Private hospital in Duhok city. Standard bacteriological methods were used to identify isolated colonies from urine samples cultured on bacterial media. A species-specific PCR assay was used to identify K. pneumoneae isolates at molecular level PCR assays and capsular type counting of the K1 and K2 genes were detected among 50 K. pneumoniae isolates. The furthermost predominant genes amongst all isolates were K1 gene (12%) followed by K2 gene (8%). This study emphasized on K. pneumoniae as sources of UTIs that displayed to harboring K1 and K2 genes. The goal of this work was to investigate the mucoviscosity of K. pneumoniae isolated from a urinary tract infection and to screen for certain virulence factor genes such as K1 and K2 genes.
Dependence of Narrow-line Region Sizes on [O iii] Luminosity in Low-redshift Active Galactic Nuclei with Double-peaked Broad Balmer Emission Lines
Authors: XueGuang Zhang 
Published: June 2022

Abstract
In this paper, simple but interesting results are reported on the upper limits of narrow-line region (NLR) sizes of a small sample of 38 low-redshift (z < 0.1) active galactic nuclei (AGN) with double-peaked broad emission lines (double-peaked BLAGN), in order to check whether the NLR sizes in type-1 AGN (broad line) and type-2 AGN (narrow line) obey a similar empirical dependence on [O iii] luminosity. In order to correct the inclination effects on projected NLR sizes of type-1 AGN, the accretion disk origin is commonly applied to describe the double-peaked broad Hα line, leading to the determined inclination angles of central disk-like broad-line regions of 38 double-peaked BLAGN. Then, considering the fixed Sloan Digital Sky Survey (SDSS) fiber radius, the upper limits of the NLR sizes of the 38 double-peaked BLAGN can be estimated. Meanwhile, a strong linear correlation between continuum luminosity and [O iii] luminosity is applied to confirm that the [O iii] emissions of the 38 double-peaked BLAGN are totally covered in the SDSS fibers. Considering the reddening-corrected measured [O iii] luminosity, the upper limits of the NLR sizes of the 38 double-peaked BLAGN are within a 99.9999% confidence interval of the expected results from the empirical relation between NLR size and [O iii] luminosity in type-2 AGN. In the current understanding, there are no challenges to the unified model of AGN through the space properties of NLRs.
An Insight-HXMT Dedicated 33 day Observation of SGR J1935+2154. II. Burst Spectral Catalog
Authors: Cai Ce , Xiong Shao-Lin , Lin Lin , Li Cheng-Kui , Zhang Shuang-Nan , Xue Wang-Chen , Tuo You-Li , Li Xiao-Bo , Ge Ming-Yu , Zhao Hai-Sheng , Song Li-Ming , Lu Fang-Jun , Zhang Shu , Li Qing-Xin , Xiao Shuo , Guo Zhi-Wei , Xie Sheng-Lun , Zhang Yan-Qiu , Yi Qi-Bin , Zhao Yi , Zhang Zhen , Liu Jia-Cong , Zheng Chao , Wang Ping 
Published: June 2022

Abstract
Since 2020 April 28, Insight-HXMT has implemented a dedicated observation on the magnetar SGR J1935+2154. Thanks to the wide energy band (1–250 keV) and high sensitivity of Insight-HXMT, we obtained 75 bursts from SGR J1935+2154 during a month-long activity episode after the emission of FRB 200428. Here we report the detailed time-integrated spectral analysis of these bursts and the statistical distribution of the spectral parameters. We find that for ∼15% (11/75) of SGR J1935+2154 bursts, the CPL model is preferred, and most of them occurred in the later part of this active epoch. In the cumulative fluence distribution, we find that the fluence of bursts in our sample is about an order of magnitude weaker than that of Fermi/GBM, but it follows the same power-law distribution. Finally, we find a burst with similar peak energy to the time-integrated spectrum of the X-ray burst associated with FRB 200428 (FRB 200428-Associated Burst), but the low energy index is harder.
Stability Constrained Characterization of the 23 Myr Old V1298 Tau System: Do Young Planets Form in Mean Motion Resonance Chains?
Authors: Tejada Arevalo Roberto , Tamayo Daniel , Cranmer Miles 
Published: June 2022

Abstract
A leading theoretical expectation for the final stages of planet formation is that disk migration should naturally drive orbits into chains of mean motion resonances (MMRs). In order to explain the dearth of MMR chains observed at Gyr ages (<1%), this picture requires such configurations to destabilize and scramble period ratios following disk dispersal. Strikingly, the only two known stars with three or more planets younger than ≲100 Myr, HR 8799 and V1298 Tau, have been suggested to be in such MMR chains, given the orbits’ near-integer period ratios. We incorporate recent transit and radial velocity (RV) observations of the V1298 Tau system, and investigate constraints on the system’s orbital architecture imposed by requiring dynamical stability on timescales much shorter than the system’s age. We show that the recent RV mass measurement of V1298 Tau b places it within a factor of 2 of the instability limit, and that this allows us to set significantly lower limits on the eccentricity (e

b
≤0.17 at 99.7% confidence). Additionally, we rule out a resonant chain configuration for V1298 Tau at ≳99% confidence. Thus, if the ∼23 Myr old V1298 Tau system did form as a resonant chain, it must have undergone instability and rearrangement shortly after disk dispersal. We expect that similar stability constrained characterization of future young multiplanet systems will be valuable in informing planet formation models.
Electromagnetic Fireworks: Fast Radio Bursts from Rapid Reconnection in the Compressed Magnetar Wind
Authors: Mahlmann J. F. , Philippov A. A. , Levinson A. , Spitkovsky A. , Hakobyan H. 
Published: June 2022

Abstract
One scenario for the generation of fast radio bursts (FRBs) is magnetic reconnection in a current sheet of the magnetar wind. Compressed by a strong magnetic pulse induced by a magnetar flare, the current sheet fragments into a self-similar chain of magnetic islands. Time-dependent plasma currents at their interfaces produce coherent radiation during their hierarchical coalescence. We investigate this scenario using 2D radiative relativistic particle-in-cell simulations to compute the efficiency of the coherent emission and to obtain frequency scalings. Consistent with expectations, a fraction of the reconnected magnetic field energy, f ∼ 0.002, is converted to packets of high-frequency fast magnetosonic waves, which can escape from the magnetar wind as radio emission. In agreement with analytical estimates, we find that magnetic pulses of 1047 erg s−1 can trigger relatively narrowband GHz emission with luminosities of approximately 1042 erg s−1, sufficient to explain bright extragalactic FRBs. The mechanism provides a natural explanation for a downward frequency drift of burst signals, as well as the ∼100 ns substructure recently detected in FRB 20200120E .
Revisiting a Disky Origin for the Faint Branch of the Sagittarius Stellar Stream
Authors: Oria Pierre-Antoine , Ibata Rodrigo , Ramos Pau , Famaey Benoit , Errani Raphaël 
Published: June 2022

Abstract
We investigate ways to produce the bifurcation observed in the stellar stream of the Sagittarius dwarf galaxy (Sgr). Our method consists of running N-body simulations of Sgr falling into the Milky Way for the last 3 Gyr, with added test particles on disk orbits that span a wide range of initial positions, energies, and angular momenta. We find that particles that end up in the faint branch are predominantly high-angular-momentum particles that can all originate from a single plane within the progenitor, nearly perpendicular both to the orbital plane of the progenitor and to the Milky Way stellar disk. Their original configuration at the start of the simulation corresponds to spiral features already present 3 Gyr ago, which could be, e.g., the result of a disk-like component being tidally perturbed, or the tidal tails of a satellite being disrupted within Sgr. We then run a simulation including the self-gravity of this disky component. Despite the remaining ambiguity of its origin, this disk component of the Sgr dwarf with spiral overdensities provides a first step toward a working model to reproduce the observed faint branch of the bifurcated Sgr stream.
The Local Stellar Halo is Not Dominated by a Single Radial Merger Event
Authors: Donlon II Thomas , Newberg Heidi Jo , Kim Bokyoung , Lépine Sebastien 
Published: June 2022

Abstract
We use halo dwarf stars with photometrically determined metallicities that are located within 2 kpc of the Sun to identify local halo substructure. The kinematic properties of these stars do not indicate a single, dominant radial merger event (RME). The retrograde Virgo Radial Merger (VRM) component has [Fe/H] = −1.7. A second, nonrotating RME component we name Nereus is identified with [Fe/H] = −2.1 and has similar energy to the VRM. We identify a possible third RME, which we name Cronus, that is corotating with the disk, has lower energy than the VRM, and has [Fe/H] = −1.2. We identify the Nyx Stream in the data. In addition to these substructures, we observe metal-poor halo stars ([Fe/H] ∼ −2.0 and σ

v
∼ 180 km s−1) and a disk/Splash component with lower rotational velocity than the disk and lower metallicity than typically associated with the Splash. An additional excess of halo stars with low velocity and metallicity of [Fe/H] = −1.5 could be associated with the shell of a lower-energy RME or indicate that lower-energy halo stars have higher metallicity. Stars that comprise the “Gaia Sausage” velocity structure are a combination of the components identified in this work.
Remarkable Correspondence of the Sagittarius A* Submillimeter Variability with a Stellar-wind-fed Accretion Flow Model
Authors: Murchikova Lena , White Christopher J. , Ressler Sean M. 
Published: June 2022

Abstract
We compare the 230 GHz near-horizon emission from Sagittarius A* to simulations representing three classes of accretion flows. Using the structure function to capture the variability statistics of the light curve, we find a noticeable discrepancy between the observations and models based on torus-fed accretion disks, whether those disks bring in a small or large amount of net magnetic flux. On the other hand, the simulations that are fed more realistically by stellar winds match the observed structure function very well. We describe the differences between models, arguing that feeding by stellar winds may be a critical component in constructing theoretical models for accretion in the Galactic Center.
Implication of Spin Constraints by the Event Horizon Telescope on Stellar Orbits in the Galactic Center
Authors: Fragione Giacomo , Loeb Abraham 
Published: June 2022

Abstract
The center of the Milky Way hosts the closest supermassive black hole, Sgr A*. Decades of near-infrared observations of our Galactic Center have shown the presence of a small population of stars (the so-called S-star cluster) orbiting Sgr A*, which were recently reported to be arranged into two orthogonal disks. In this case, the timescale for the Lense–Thirring precession of S stars should be longer than their age, implying a low spin for Sgr A*. In contrast, the recent results by the Event Horizon Telescope favor a highly spinning Sgr A*, which seems to suggest that the S stars could not be arranged in disks. Alternatively, the spin of Sgr A* must be small, suggesting that the models for its observed image are incomplete.
Predictive Index Using Receiver Operating Characteristic and Trend Analysis of Dengue Hemorrhagic Fever Incidence
Authors: Sutriyawan Agung , Herdianti Herdianti , Cakranegara Pandu Adi , Lolan Yosef Pandai , Sinaga Yakobus 
Published: June 2022

BACKGROUND: The city of Bandung is an endemic area of dengue hemorrhagic fever (DHF). Increased cases of DHF in the area have influenced the mortality rate. The number of deaths due to DHF in 2019 was 14 people.

AIM: This study aims to analyze the epidemiological determinants and to observe the trend of analysis to project DHF cases.

MATERIALS AND METHODS: This study used a case-control design. The case population is those who have DFH, while the control population is those who do not have DHF. There were 510 respondents included in this study. Samples were taken using a purposive sampling technique. Epidemiological determinants were analyzed using the Chi-square test and logistic regression, while the trend of the disease was analyzed using exponential smooth analysis.

RESULTS: The result of this study showed that education (p = 0.036), the presence of mosquito larvae (p = 0.000), container materials (p = 0.002), water containers (p = 0.025), mosquito nets (p = 0.010), the presence of solid waste (p = 0.002), mosquito repellent plants (p = 0.041), and mobility (0.004). The most dominant epidemiological determinant was the presence of mosquito larvae (odds ratio = 3.2). The predictive index of DHF can predict people who are sick with DHF among the sick population is 68.6%.

CONCLUSION: This study concluded that the significant epidemiological determinants are education, the presence of mosquito larvae, container materials, water containers, mosquito nets, the presence of solid waste, and mosquito repellent plants. Among those determinants, the presence of mosquito larvae is the most dominant factor. This study also concluded that there will be an increase in DFH cases over the next 5 years. Hence, it is important to increase larvae free index by empowering Kader Juru Pemantau Jentik (JUMANTIK) in Bandung and conducting epidemiological surveillance.
La délinquance financière : état des lieux
Authors: Van Ruymbeke Renaud 
Published: June 2022

Dans cet article, Renaud Van Ruymbeke revient sur le mal insidieux qu'est la corruption tant il ruine la démocratie et l'État de droit dans tous les pays du monde. Il en énumère les manifestations abritées par des « pays non coopératifs » : blanchiment, fraude fiscale, détournements de fonds, trafics en tous genres… Parmi les stratégies mises en œuvre pour y faire face, il insiste sur l'indépendance et la spécialisation de la justice. Mais face à l'ampleur du phénomène, sa prolifération et ses conséquences, seule une « volonté politique collective » sera efficace.
On Hardy kernels as reproducing kernels
Authors: Oliva-Maza Jesús 
Published: June 2022

AbstractHardy kernels are a useful tool to define integral operators on Hilbertian spaces like
$L^2(\mathbb R^+)$
or
$H^2(\mathbb C^+)$
. These kernels entail an algebraic
$L^1$
-structure which is used in this work to study the range spaces of those operators as reproducing kernel Hilbert spaces. We obtain their reproducing kernels, which in the
$L^2(\mathbb R^+)$
case turn out to be Hardy kernels as well. In the
$H^2(\mathbb C^+)$
scenario, the reproducing kernels are given by holomorphic extensions of Hardy kernels. Other results presented here are theorems of Paley–Wiener type, and a connection with one-sided Hilbert transforms.