bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analisis Kepuasan Sistem Informasi Layanan Aplikasi MyIndiHome di Karawang menggunakan metode PIECES Framework
Authors: Priatna Apit , Awaludin Dudi , Amelia Dita , Yusuf Arif Maulana 
Published: January 2024

Sistem informasi menyandang kedudukan penting dalam menciptakan informasi untuk level manajemen. Studi harus menyadari kebutuhan informasi adapun diharapkan manajemen agar informasi akan didapatkan karena sistem informasi mampu berperan dengan benar untuk manajemen. Cara penilaian akan kualitas mengenai sistem informasi diinginkan akan sistem informasi Aplikasi MyIndiHome berlangsung sesuai dengan yang dibutuhkan. Adapun metode PIECES Framework akan digunakan dimana sesuai dengan 6 point yaitu Performance, Informasi dan Data, Economics, Control and Security, Effeciency, and Service. Penilitian ini bertujuan mengenai analisis kepuasan, kelemahan dan kelebihan pada Aplikasi MyIndiHome. Menurut angket yang telah dihitungkan pada responden bahwa user Aplikasi MyIndiHome, jika point Performance, Information&Data, Economics, Control and Security, Effeciency, dan Service memberi hasil puas terhdap para pelanggan maka sistem Aplikasi MyIndiHome, yang dipakai oleh para pengguna Aplikasi MyIndiHome dikarawang telah sesuai dengan 6 point pada PIECES.
The Infrastructure for Providing Electronic Communication Services and its Impact on Effective Competition
Authors: Gjika Jonida , Kau Renata 
Published: January 2024

The infrastructure for providing electronic communication services and its impact on competitiveness, including 5G technology, has been focused on several key dimensions. These include the allocation of frequency spectrum, investments by cellular network operators, and the role of sectoral policies in the development of 5G technology. Spectrum allocation is a critical step in the development of 5G infrastructure, considering the regulatory authorities' role in ensuring effective frequency utilization. Operator investments in building 5G networks are a crucial factor for technological advancement and market competitiveness. Furthermore, these aspects must be assessed within the context of competition and performance growth in electronic communication services. Particularly, 5G technology represents a significant factor in enhancing network speed and capacity, offering innovative and adaptable services for users and industry. Security and privacy aspects are also crucial, emphasizing the need for effective policies and regulations to safeguard user data and ensure a reliable electronic communication environment. In this regard, it is appreciated that the development of electronic communication infrastructure, particularly with the establishment of 5G networks, has a profound impact on competitiveness, heralding a new era of advanced and personalized communication services. Another aspect involves the analysis of the market structure with two cellular operators in Albania and industry expectations for investments in 5G technology, rendering it a distinctive situation as a market dominated by a duopoly, given the absence of MVNOs, and the role of the effect reflected by the use of OTT services. The duopoly market structure can present challenges and advantages for the sector, also considered as a factor that may influence the development of 5G technology. Investments in 5G infrastructure are regarded as a crucial step to expedite progress and enhance cellular services within the country. Competition between the two operators underscores the importance of appropriate regulation to encourage investments and ensure a healthy competitive environment.

Received: 17 September 2023 / Accepted: 29 December 2023 / Published: 5 January 2024
Work Commitment As An Intervening In Disaster Management Performance
Authors: Len Yullina Eliza , Andria Yass , Muslim Irwan , Putri Anne 
Published: January 2024

This study attempted to determine the effect of job competence and Compensation on performance for fifty employees of the Padang City Regional Disaster Management Agency, with work commitment serving as an intervening variable. The general population is given questionnaires to complete in order to gather information for route analysis and hypothesis testing. The study's conclusion demonstrates the significant relationships between work commitment and performance, work competence and work commitment, compensation and work commitment, and work commitment as an intervening variable and work commitment. The Implementing Unit of the Padang City Regional Disaster Management Agency's pay and performance are impacted by work and performance as well as work commitment. It is advised that future policy makers target responders with policies in the areas of job competence, compensation, work commitment, and performance, granting them the right to facilities as a result of their high-caliber and productive work.
Keywords: work commitment, compensation, work commitment, Performance
Determinants of Leadership Style in Business School
Authors: Amborowati Agustin , Harsono Mugi 
Published: January 2024

Leadership plays a central role in determining the direction, culture, and performance of an organization. In the context of globalization, an effective leadership style is becoming increasingly important, as leaders need to be able to face the various challenges facing organizations at the global level. Leadership style refers to the leader's methods and behaviors when directing, motivating, and managing others (Fonseca Da Costa Guterresa et al., 2020). A leader's style is shaped by a variety of factors, including personality, values, skills, and experience, and can have a significant impact on the effectiveness of their leadership. The research design used was in the form of a survey. The primary data source obtained in this study was carried out by distributing questionnaires directly to students. Secondary data sources in this study are Human Resource Management Books and previous research journals related to the research topic, namely about Leadership Style. In this study, researchers will describe the Leadership Style possessed by students. Generation Z shows a strong preference for participatory, collaborative and technology-oriented leadership. Participatory leaders listen to and value team input, promote collaboration, and create an inclusive environment (Hassan et al., 2016). This research makes an important contribution to our understanding of Generation Z's preferences and leadership styles in the global economy. These results can assist organizations, leaders, and academics in developing more effective leadership strategies to guide and support future leaders.
Far from the threatening crowd: Generalisation of conditioned threat expectancy and fear in COVID-19 lockdown
Authors: Dymond Simon , Cameron Gemma , Zuj Daniel V. , Quigley Martyn 
Published: January 2024

AbstractFear and anxiety are rarely confined to specific stimuli or situations. In fear generalisation, there is a spread of fear responses elicited by physically dissimilar generalisation stimuli (GS) along a continuum between danger and safety. The current study investigated fear generalisation with a novel online task using COVID-19-relevant stimuli (i.e., busy or quiet shopping street/mall scenes) during pandemic lockdown restrictions in the United Kingdom. Participants (N = 50) first completed clinically relevant trait measures before commencing a habituation phase, where two conditioned stimuli (CSs; i.e., a busy or quiet high street/mall scene) were presented. Participants then underwent fear conditioning where one conditioned stimulus (CS+) was followed by an aversive unconditioned stimulus (US; a loud female scream accompanied by a facial photograph of a female displaying a fearful emotion) and another (CS-) was not. In a test phase, six generalisation stimuli were presented where the US was withheld, and participants provided threat expectancy and fear ratings for all stimuli. Following successful conditioning, fear generalization was observed for both threat expectancy and fear ratings. Trait worry partially predicted generalised threat expectancy and COVID-19 fear strongly predicted generalised fear. In conclusion, a generalisation gradient was evident using an online remote generalisation task with images of busy/quiet streets during the pandemic. Worry and fear of COVID-19 predicted fear generalisation.
Habilidades de Comunicación y la Presencia del Síndrome de Burnout en el Cuidador del Adulto Mayor, de un Hogar de Ancianos, Latacunga-Ecuador
Authors: Medina Bautista Odalis Yadira , Medina Bautista Anderson Lenin , Bautista Rueda Alicia Irlanda , Toapanta Toapanta Libia Mariana , Santos Marcillo Nora Alexandra 
Published: January 2024

La presente investigación tiene como objetivo determinar de qué forma las habilidades comunicativas se relacionan con el síndrome de burnout (dimensional) en el cuidador del adulto mayor de un Hogar de ancianos. El estudio tiene un enfoque cuantitativo correlacional, de diseño no experimental-transversal, con una muestra de 30 cuidadores de la salud, de seis especialidades profesionales. Para la recolección de datos se utilizó la escala de las habilidades comunicativas en el profesional de salud (EHC-PS), el Inventario de Burnout de Maslach (MBI) y la encuesta sociodemográfica. Los resultados muestran, en relación a la estructura dimensional del burnout que del total de la población el 26,7% presentan agotamiento emocional, y el 30% despersonalización a niveles altos, y el 16,7% presentan baja realización personal, en cuanto a las habilidades comunicativas, el 53,3% evidencia comunicación informativa, el 43,3% empatía, el 46,7% evidencian respeto al igual que habilidad social. En conclusión, existe suficiente evidencia estadística para aceptar la hipótesis de investigación, mediante la correlación de Rho Spearman se evidenció una correlación negativa estadísticamente significativa entre las variables: empatía con agotamiento emocional y despersonalización; respeto con agotamiento emocional, despersonalización y puntuaciones de burnout total.
The Combined Effects of Vertical and Horizontal Shear Instabilities in Stellar Radiative Zones
Authors: Garaud Pascale , Khan Saniya , Brown Justin M. 
Published: January 2024

Abstract
Shear instabilities can be the source of significant amounts of turbulent mixing in stellar radiative zones. Past attempts at modeling their effects (either theoretically or using numerical simulations) have focused on idealized geometries, where the shear is either purely vertical or purely horizontal. In stars, however, the shear can have arbitrary directions with respect to gravity. In this work, we use direct numerical simulations to investigate the nonlinear saturation of shear instabilities in a stably stratified fluid, where the shear is sinusoidal in the horizontal direction and either constant or sinusoidal in the vertical direction. We find that in the parameter regime studied here (nondiffusive, fully turbulent flow), the mean vertical shear does not play any role in controlling the dynamics of the resulting turbulence, unless its Richardson number is smaller than 1 (approximately). As most stellar radiative regions have a Richardson number much greater than 1, our result implies that the vertical shear can essentially be ignored in the computation of the vertical mixing coefficient associated with shear instabilities for the purpose of stellar evolution calculations, even when it is much larger than the horizontal shear (as in the solar tachocline, for instance).
Large-scale Coronal Dimming Foreshadowing a Solar Eruption on 2011 October 1
Authors: Zhu Chunming , DeVore C. Richard , Dahlin Joel T. , Qiu Jiong , Kazachenko Maria D. , Uritsky Vadim M. , Vandervelde Jackson S. 
Published: January 2024

Abstract
Understanding large-scale solar eruptions requires detailed investigation of the entire system’s evolution, including the magnetic environment enveloping the source region and searches for precursor activity prior to event onset. We combine stereoscopic observations from the Solar Dynamics Observatory (SDO) and STEREO-B spacecraft for several hours before a filament ejection, M1.2-class eruptive flare, and coronal mass ejection (CME) originating in NOAA active region (AR) 11305 on 2011 October 1. Two episodes of significant preeruption coronal dimming that occurred well to the southeast of the ejected filament are identified. The CME subsequently took off with a substantial component of velocity toward the dimming, which became very pronounced during eruption. We used SDO/Helioseismic and Magnetic Imager (HMI) data to reconstruct the magnetic environment of the system and found that it contains a null point near the dimming region. AR 11305 had quite complex connections to nearby ARs 11302 and 11306, as well as to other regions of decayed AR flux. The intensifying and spatially expanding precursor dimming was accompanied by southeastward rising motions of loops toward the null point and northeastward and southwestward motions of loops retracting away. These motions and the dimming are consistent with persistent magnetic reconnection occurring at the null point as it moved upward and southeastward, thereby removing a strapping magnetic field high above AR 11305. Eventually, the filament was ejected explosively toward the null point. We conclude that the breakout model for solar eruptions provides a compelling account of this event. Furthermore, we conjecture that preeruption dimmings may be much more frequent than currently recognized.
Between the Cosmic-Ray “Knee” and the “Ankle”: Contribution from Star Clusters
Authors: Bhadra Sourav , Thoudam Satyendra , Nath Biman B , Sharma Prateek 
Published: January 2024

Abstract
We show that massive, young star clusters may be possible candidates that can accelerate Galactic cosmic rays (CRs) in the range of 107–109 GeV (between the “knee” and “ankle”). Various plausible scenarios, such as acceleration at the wind termination shock and supernova shocks inside these young star clusters, have been proposed, since it is difficult to accelerate particles up to the 107–109 GeV range in the standard paradigm of CR acceleration in supernova remnants. We consider a model for the production of different nuclei in CRs from massive stellar winds using the observed distribution of young star clusters in the Galactic plane. We present a detailed calculation of CR transport in the Galaxy, taking into account the effect of diffusion, interaction losses during propagation, and particle reacceleration by old supernova remnants to determine the all-particle CR spectrum. Using the maximum energy estimate from the Hillas criterion, we argue that a young, massive star cluster can accelerate protons up to a few tens of PeV. Upon comparison with the observed data, our model requires a CR source spectrum with an exponential cutoff of 5 × 107
Z GeV (50 Z PeV) from these clusters, together with a CR injection fraction of ∼5% of the wind kinetic energy. We discuss the possibility of achieving these requirements in star clusters, as well as the associated uncertainties, in the context of considering star clusters as the natural accelerator of the “second component” of Galactic CRs.
Long-period Radio Pulsars: Population Study in the Neutron Star and White Dwarf Rotating Dipole Scenarios
Authors: Rea N. , Hurley-Walker N. , Pardo-Araujo C. , Ronchi M. , Graber V. , Coti Zelati F. , de Martino D. , Bahramian A. , McSweeney S. J. , Galvin T. J. , Hyman S. D. , Dall’Ora M. 
Published: January 2024

Abstract
The nature of two recently discovered radio emitters with unusually long periods of 18 minutes (GLEAM-X J1627–52) and 21 minutes (GPM J1839–10) is highly debated. Their bright radio emission resembles that of radio magnetars, but their long periodicities and lack of detection at other wavelengths challenge the neutron star (NS) interpretation. In contrast, long rotational periods are common in white dwarfs (WDs) but, although predicted, dipolar radio emission from isolated magnetic WDs has never been unambiguously observed. In this work, we investigate these long-period objects as potential isolated NS or WD dipolar radio emitters and find that both scenarios pose significant challenges to our understanding of radio emission via pair production in dipolar magnetospheres. We also perform population-synthesis simulations based on dipolar spin-down in both pictures, assuming different initial-period distributions, masses, radii, beaming fractions, and magnetic field prescriptions, to assess their impact on the ultra-long pulsar population. In the NS scenario, we do not expect a large number of ultra-long-period pulsars under any physically motivated (or even extreme) assumptions for the period evolution. On the other hand, in the WD scenario, we can easily accommodate a large population of long-period radio emitters. However, no mechanism can easily explain the production of such bright coherent radio emission in either scenarios.
Energy-dependent Analyses of the Gamma-Ray Emission from HESS J1857+026 with Fermi-LAT
Authors: Guo Xiaolei , Liu Xi , Xin Yuliang 
Published: January 2024

Abstract
We report the discovery of the energy-dependent morphology of the GeV gamma-ray emission from HESS J1857+026 with more than 13 yr of Fermi Large Area Telescope data. The GeV gamma-ray emission from this region is composed of two extended components. The hard component with an index of 1.74 ± 0.07 in the energy range of 0.5–500 GeV is spatially coincident with HESS J1857+026, and its 68% containment radius varies from ∼0.°44 below 40 GeV to ∼0.°30 above 140 GeV. The hard GeV gamma-ray spectrum and the energy-dependent morphology of HESS J1857+026 make it favor a pulsar wind nebula origin, which is associated with the energetic pulsar PSR J1856+0245. The soft component with an index of 2.70 ± 0.16 and another extended gamma-ray source detected in this region, 4FGL J1857.9+0313e, with an index of 2.55 ± 0.07, are spatially coincident with two molecular clumps in the northeast and southwest of HESS J1857+026, which favors the hadronic process, and the protons could be accelerated by the hypothetical supernova remnant associated with PSR J1856+0245.
Changing-look Active Galactic Nuclei from the Dark Energy Spectroscopic Instrument. I. Sample from the Early Data
Authors: Guo Wei-Jian , Zou Hu , Fawcett Victoria A. , Canning Rebecca , Juneau Stephanie , Davis Tamara M. , Alexander David M. , Jiang Linhua , Aguilar Jessica Nicole , Ahlen Steven , Brooks David , Claybaugh Todd , de la Macorra Axel , Doel Peter , Fanning Kevin , Forero-Romero Jaime E. , Gontcho A Gontcho Satya , Honscheid Klaus , Kisner Theodore , Kremin Anthony , Landriau Martin , Meisner Aaron , Miquel Ramon , Moustakas John , Nie Jundan , Pan Zhiwei , Poppett Claire , Prada Francisco , Rezaie Mehdi , Rossi Graziano , Siudek Małgorzata , Sanchez Eusebio , Schubnell Michael , Seo Hee-Jong , Sui Jipeng , Tarlé Gregory , Zhou Zhimin 
Published: January 2024

Abstract
Changing-look active galactic nuclei (CL AGNs) can be generally confirmed by the emergence (turn-on) or disappearance (turn-off) of broad emission lines (BELs), associated with a transient timescale (about 100 ∼ 5000 days) that is much shorter than predicted by traditional accretion disk models. We carry out a systematic CL AGN search by crossmatching the spectra coming from the Dark Energy Spectroscopic Instrument and the Sloan Digital Sky Survey. Following previous studies, we identify CL AGNs based on Hα, Hβ, and Mg ii at z ≤ 0.75 and Mg ii, C iii], and C iv at z > 0.75. We present 56 CL AGNs based on visual inspection and three selection criteria, including 2 Hα, 34 Hβ, 9 Mg ii, 18 C iii], and 1 C iv CL AGN. Eight cases show simultaneous appearances/disappearances of two BELs. We also present 44 CL AGN candidates with significant flux variation of BELs, but remaining strong broad components. In the confirmed CL AGNs, 10 cases show additional CL candidate features for different lines. In this paper, we find: (1) a 24:32 ratio of turn-on to turn-off CL AGNs; (2) an upper-limit transition timescale ranging from 330 to 5762 days in the rest frame; and (3) the majority of CL AGNs follow the bluer-when-brighter trend. Our results greatly increase the current CL census (∼30%) and would be conducive to exploring the underlying physical mechanism.
Organic Hazes as a Source of Life’s Building Blocks to Warm Little Ponds on the Hadean Earth
Authors: Pearce Ben K. D. , Hörst Sarah M. , Sebree Joshua A. , He Chao 
Published: January 2024

Abstract
Over 4 billion years ago, Earth is thought to have been a hazy world akin to Saturn’s moon Titan. The organic hazes in the atmosphere at this time could have contained a vast inventory of life’s building blocks and thus may have seeded warm little ponds for life. In this work, we produce organic hazes in the lab in atmospheres with high (5%) and low (0.5%) CH4 abundances and analyze the solid particles for nucleobases, amino acids, and a few other organics using GC/MS/MS to obtain their concentrations. We also analyze heated (200°C) samples from the high methane organic haze experiment to simulate these particles sitting on an uninhabitable surface. Finally, we use our experimental results and estimates of atmospheric haze production as inputs for a comprehensive numerical pond model to calculate the concentrations of nucleobases from organic hazes in these environments. We find that organic hazes typically provide up to 0.2–6.5 μM concentrations of nucleobases to warm little ponds for potentially habitable Hadean conditions. However, without seepage, uracil and thymine can reach ∼100 μM concentrations, which is the present lower experimental limit to react these species to form nucleotides. Heating samples leads to partial or complete decay of biomolecules, suggesting that biomolecule stockpiling on the hot surface is unlikely. The ideal conditions for the delivery of life’s building blocks from organic hazes would be when the Hadean atmosphere is rich in methane, but not so rich as to create an uninhabitable surface.
Four-Year Outcomes of Cementless Versus Cemented Fixation of a Newly Introduced Total Knee Arthroplasty Design
Authors: Costales Timothy G. , Dalury David F. 
Published: January 2024

Background:
Aseptic loosening continues to be a major cause of failure of total knee arthroplasty (TKA). Although cemented fixation remains the gold standard, there is renewed interest in cementless fixation as a means of decreasing this risk via biologic fixation. The purpose of this study was to evaluate the clinical outcomes of cemented and cementless versions of a newly introduced TKA design at an average of 4 years postoperatively.

Materials and Methods:

This was a retrospective case-control study of 100 primary TKAs comparing cementless vs cemented TKAs using the same cruciate-retaining implant design (ATTUNE Knee System; DePuy Synthes). Fifty patients undergoing cementless TKA with a mean age of 60.8 years (range, 48–71 years) and body mass index (BMI) of 31.6 kg/m
2
(range, 23.7–41.9 kg/m
2
) were matched to 50 patients undergoing primary cemented TKA with a mean age of 62.7 years (range, 51–73 years) and BMI of 30.1 kg/m
2
(range, 24.6–43.9 kg/m
2
). The mean follow-up was 4.2 years (range, 4.0–4.4 years) in the cementless group and 7.6 years (range, 7.5–7.7 years) in the cemented group. Complications, clinical outcomes using the Knee Society Score (KSS), and radiographic analyses were evaluated at final follow-up. Student's
t
tests were used for statistical analyses.

Results:

There was no statistical difference in age, BMI, and preoperative KSS between the two groups (
P
=.12,
P
=.15, and
P
=.55, respectively). There were no complications or reoperations in either cohort. There were no statistical differences in range of motion and total KSS at final follow-up between the two groups. Final total KSS had a mean of 91.1 for the cementless group and 93.7 for the cemented group. There was no radiographic evidence of component subsidence or loosening in either cohort.

Conclusion:

When compared with its cemented counterpart, the newly introduced cementless TKA design had similar excellent clinical improvements and radiologic results at an average of 4 years of follow-up. [
Orthopedics
. 2024;47(3):161–166.]