bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pengaruh Gaya Kepemimpinan dan Kompensasi terhadap Prestasi Kerja Guru di Yayasan Pendidikan SMK PGRI 14 Jakarta
Authors: Mansur Mansur , Afandi Idris 
Published: June 2023

Penelitian ini bertujuan untuk menguji dan menganalisa pengaruh Gaya Kepemimpinan dan Kompensasi terhadap Prestasi Kerja Guru. Pengumpulan Data dilakukan secara langsung dari objek penelitian, yaitu dengan menyebabkan kuesioner terhadap 30 sampel dari guru Yayasan Pendidikan SMK PGRI 14 Jakarta. Hasil penelitian menunjukkan bahwa (1) Secara parsial tidak terdapat pengaruh yang signifikan antara variabel Gaya Kepemimpinan terhadap Prestasi Kerja, karena nilai thitung -0.388 < 1.988 dan tingkat signifikansi 0.701 > Î± = 0.05. Variabel Prestasi Kerja Â hanya dapat dijelaskan oleh variabel Gaya Kepemimpinan sebesar 1% dengan nilai R2 = 0.01. (2) Secara parsial terdapat pengaruh yang signifikan antara variabel Kompensasi terhadap Prestasi Kerja, karena nilai thitung 0.456 < 1.988 dan tingkat signifikansi 0.000 < Î± = 0.05. Variabel Prestasi Kerja hanya dapat dijelaskan oleh variabel Kompensasi sebesar 3% dengan nilai R2 = 0.03. (3) Secara simultan terdapat pengaruh antara variabel Gaya Kepemimpinan dan Kompensasi terhadap Prestasi Kerja, karena nilai Fhitung 0.116 < Ftabel 3,105 dan nilai signifikansinya 0.891 > 0.05. Variabel Prestasi Kerja dapat dijelaskan oleh variabel Gaya Kepemimpinan dan Kompensasi sebesar 80% dengan nilai R2 = 0.8.
Pengaruh Knowledge dan Influencer terhadap Literasi Investasi Mahasiswa di Masa Pandemi Covid-19
Authors: Ratih Susiana Dewi , Pramesti Esty Dita , Noviaty Evi , Sutrisno Sutrisno 
Published: June 2023

Masa pandemi covid-19, membuat masyarakat merubah cara hidup dengan kebiasaan baru, pembatasan sosial, membuat orang memanfaatkan media sosial secara daring dalam mendapatkan berbagai informasi serta melakukan aktivitas bisnis dan pembelajaran. Tingkat literasi investasi di masyarakat 23% dan terkait pasar modal literasi investasinya adalah 0.11%. Mahasiswa merupakan calon investor muda yang dapat berperan aktif dalam dunia investasi, harus memiliki literasi investasi. Sesuai teori Sosial Kognitif, literasi dilakukan melalui faktor knowledge dan faktor lingkungan, melalui penggunaan media sosial, khusunya kolaborasi dengan influencer di media sosial. Untuk itu ditelitiÂ bagaimana pengaruh Knowledge danÂ Influencer baik secara parsial maupun simultanÂ terhadap Literasi Investasi Mahasiswa di Masa Pandemi Covid-19 Tahun 2022. Metode penelitian menggunaka metode kuantitatif, dengan populasi mahasiswa DKI Jakarta, dan sampel berjumlah 100 orang. Teknik analisis data menggunakan uji regresi linier berganda. Hasil penelitian menujukkan Knowledge berpengaruh positif dan signifikan terhadap Literasi Investasi Mahasiswa. Sedangkan penggunaan influencer tidak berpengaruh terhadap Literasi Investasi Mahasiswa. Knowledge dan Influencer secara simultan berpengaruh positif dan signifikan terhadap Literasi Investasi Mahasiswa. Kesimpulannya, selama masa pandemi covid-19, ada peningkatan knowledge literasi investasi pada mahasiswa. Influencer di media sosial tidak berpengaruh. Knowledge dan influencer berkontribusi yaitu 13,6%, sisanya oleh variabel lain.Â
Cesium Fractionation in Miarolitic Pegmatites: A Reevaluation of K-Feldspar Data
Authors: Anderson Alan J. , Ercit T. Scott , McCarron Travis 
Published: June 2023

Abstract
A review of K-feldspar compositions from miarolitic pegmatites shows that in most pegmatites the pocket K-feldspars are enriched in Rb and Cs relative to exopocket K-feldspar within the same body. Rayleigh modeling of simultaneous crystallization of K-feldspar from a melt and coexisting aqueous solution predicts that the Cs content of K-feldspar falls to nil, which implies that rare-alkali enriched (up to 2190 ppm Cs) pocket K-feldspar must have crystallized from a fluid-undersaturated pegmatite melt. However, most petrologists contend that miarolitic cavities develop after exsolution of an aqueous phase from a pegmatite melt. To investigate the process responsible for the high uptake of Cs and Rb in pocket K-feldspar we determined the rare-alkali content of synthetic K-feldspars that crystallized at 500 °C from a supercritical aqueous fluid in a granitic melt + fluid system. The K/Cs ratio of the synthetic K-feldspar was compared to modeled K/Cs ratios for K-feldspars formed from a water-saturated melt in which the initial Cs concentration (Co) of the melt was identical to the starting glass used in experiments. Our results show that the K/Cs ratios of synthetic K-feldspar are orders of magnitude lower than that predicted using the Rayleigh fractionation model. We attribute the high uptake of Rb and Cs in K-feldspar to kinetic effects associated with rapid crystal growth in an undercooled water-saturated melt. Therefore, we propose that Rb- and Cs-rich K-feldspars that line the pockets of natural miarolitic pegmatites are the products rapid growth in an aqueous fluid that coexists with a highly fractionated residual melt.
Precise Age for the Binary Star System 12 Com in the Coma Berenices Cluster
Authors: Lam Rex , Sandquist Eric L. , Schaefer Gail H. , Farrington Christopher D. , Monnier John D. , Anugu Narsireddy , Lanthermann Cyprien , Klement Robert , Ennis Jacob , Setterholm Benjamin R. , Gardner Tyler , Kraus Stefan , Davies Claire L. , Orosz Jerome A. 
Published: June 2023

Abstract
We present measurements of the interferometrically resolved binary star system 12 Com and the single giant star 31 Com in the cluster Coma Berenices. 12 Com is a double-lined spectroscopic binary system consisting of a G7 giant and an A3 dwarf at the cluster turnoff. Using an extensive radial velocity data set and interferometric measurements from the Palomar Testbed Interferometer and the Center for High Angular Resolution Astronomy array, we measured masses M
1 = 2.64 ± 0.07M
⊙ and M
2 = 2.10 ± 0.03M
⊙. Interferometry also allows us to resolve the giant and measure its size as R
1 = 9.12 ± 0.12 ± 0.01R
⊙. With the measured masses and radii, we find an age of 533 ± 41 ± 42 Myr. For comparison, we measure the radius of 31 Com to be 8.36 ± 0.15 R
⊙. Based on the photometry and radius measurements, 12 Com A is likely the most evolved bright star in the cluster, large enough to be in the red giant phase, but too small to have core helium burning. Simultaneous knowledge of 12 Com A’s mass and photometry puts strong constraints on convective core overshooting during the main-sequence phase, which in turn reduces systematic uncertainties in the age. Increased precision in measuring this system also improves our knowledge of the progenitor of the cluster white dwarf WD1216+260.
The 14 Her Planetary System: Companion Masses and Architecture from Radial Velocities and Astrometry
Authors: Benedict G. F. , McArthur B. E. , Nelan E. P. , Bean J. L. 
Published: June 2023

Abstract
We combine Hubble Space Telescope (HST) Fine Guidance Sensor, Hipparcos, and Gaia DR3 astrometric observations of the K0 V star 14 Her with the results of an analysis of extensive ground-based radial velocity data to determine perturbation orbits and masses for two previously known companions, 14 Her b and c. Radial velocities obtained with the Hobby–Eberly Telescope and from the literature now span over 25 years. With these data we obtain improved radial velocity (RV) orbital elements for both the inner companion, 14 Her b and the long-period outer companion, 14 Her c. We also find evidence of an additional RV signal with P ∼ 3789d. We then model astrometry from Hipparcos, HST, and Gaia with RV results to obtain system parallax and proper motion, perturbation periods, inclinations, and sizes due to 14 Her b and c. We find P
b = 1767.6 ± 0.2 days, perturbation semimajor axis α
b = 1.3 ± 0.1 mas, and inclination i
b = 36° ± 3°, P
c = 52160 ± 1028 days, perturbation semimajor axis α
c = 10.3 ± 0.7 mas, and inclination i
c = 82° ± 14°. In agreement with a past investigation, the 14 Her b, c orbits exhibit significant mutual inclination. Assuming a primary mass M
* = 0.98 ± 0.04M
☉, we obtain companion masses



b

=

8.5

−
0.8

+
1.0



Jup

and



c

=

7.1

−
0.6

+
1.0



Jup

.
Confinedness of an X3.1-class Solar Flare Occurred in NOAA 12192: Analysis from Multi-instrument Observations
Authors: Vasantharaju N. , Zuccarello F. , Ferrente F. , Guglielmino S. L. 
Published: June 2023

Abstract
The nonassociation of coronal mass ejections with high energetic flares is sparse. For this reason, the magnetic conditions required for the confinedness of major flares is a topic of active research. Using multi-instrument observations, we investigated the evolution and effects of confinedness in an X3.1 flare, which occurred in active region (AR) 12192. The decrease of net fluxes in the brightening regions near the footpoints of the multisigmoidal AR in the photosphere and chromosphere, indicative of flux cancellation favoring tether-cutting reconnection (TCR), is observed using the magnetic field observations of HMI/SDO and SOT/Hinode, respectively. The analysis of spectropolarimetric data obtained by the Interferometric Bidimensional Spectrometer over the brightening regions suggests untwisting of field lines, which further supports TCR. Filaments near the polarity inversion line region, resulting from TCR of low-lying sheared loops, undergo merging and form an elongated filament. The temperature and density differences between the footpoints of the merged filament, revealed by DEM analysis, cause streaming and counterstreaming of the plasma flow along the filament and unload at its footpoints with an average velocity of ≈40 km s−1. This results in a decrease of the mass of the filament (density decreased by >50%), leading to its rise and expansion outward. However, due to strong strapping flux, the filament separates itself instead of erupting. Further, the evolution of nonpotential parameters describes the characteristics of confinedness of the flare. Our study suggests that the sigmoid–filament system exhibits upward catastrophe due to mass unloading but gets suppressed by strong confinement of the external poloidal field.
Semi-analytical Expression of G-mode Period Spacing: The Case of Brunt–Väisälä Frequency with Not a Jump but a Ramp
Authors: Hatta Yoshiki 
Published: June 2023

Abstract
To decipher complex patterns of gravity-mode period spacings observed for intermediate-mass main-sequence stars is an important step toward a better understanding of the structure and dynamics in the deep radiative region of the stars. In this study, we apply the JWKB approximation to derive a semi-analytical expression of the g-mode period spacing pattern, for which the gradient in the Brunt–Väisälä frequency is taken into account. The formulation includes the term P
−1
B
⋆, where P and B
⋆ represent the g-mode period and degree of the structural variation, the latter of which especially is related to the steepness of the gradient of the Brunt–Väisälä frequency. Tests with one-dimensional stellar models show that the semi-analytical expression derived in this study is useful for inferring the degree of the structural variation B
⋆ with an accuracy of ∼10 % in the case of relatively massive intermediate-mass models with the mass M larger than 3 M
⊙. The newly formulated expression will possibly allow us to put further constraints on, e.g., mixing processes inside intermediate-mass main-sequence g-mode pulsators such as β Cep, SPB, and γ Dor stars that have been principal targets in asteroseismology.
2023 Recovery Observations and Characterization of the Active Centaur P/2010 TO20 (LINEAR-Grauer)
Authors: Schambeau Charles A. , Lilly Eva , Micheli Marco , Fernandez Yanga R. , Jevčák Peter , Samarasinha Nalin 
Published: June 2023

Abstract
We report the recovery of the Centaur P/2010 TO20 (LINEAR-Grauer) on CCD imaging data from three separate dates in 2023 April, May, and June from the 8.1 m Gemini South Telescope, representing its first known detections since 2012. The recovery observations display a compact coma and tail, consistent with ongoing activity after its recent 2022 November 27 perihelion passage. We estimate a nucleus radius upper-limit of r

n
≤ 2.7 km. Due to the current uncertainty inherent in the nucleus’ true size, we report a plausible range for the dust production of 2.7 cm ≤ Af
ρ ≤ 14.5 cm after subtraction of an assumed nucleus flux based on radii of 2.7 km and 0.5 km, respectively. P/2010 TO20 experienced a recent and well-defined orbital change and associated change in thermal environment, making it an exciting target through which to study Centaur activity drivers and their evolution as their orbits change in real-time.
Europe. Critères de Barcelone et accueil des jeunes enfants : des disparités croissantes entre les pays
Authors: Collombet Catherine , Math Antoine 
Published: June 2023

Cet article propose une analyse comparative de la situation en matière d’accueil des jeunes enfants au regard des indicateurs retenus par l’Union européenne pour les enfants de moins de 3 ans et pour ceux de 3 ans jusqu’à l’âge de la scolarité élémentaire obligatoire, ainsi qu’au regard des dépenses qui sont consacrées aux dispositifs d’accueil. Il montre que les fortes disparités entre les pays se sont accrues depuis la fixation des objectifs de Barcelone en 2002. Ce panorama permet de mesurer le chemin parcouru et restant à parcourir pour un certain nombre de pays afin d’atteindre les objectifs fixés pour 2030 par la nouvelle recommandation sur les modes de garde.
La dette publique peut-elle rester indolore?
Authors: Levy-Garboua Vivien , Maarek Gérard 
Published: June 2023

Les grands pays industrialisés semblent s’accommoder d’un niveau de dette publique sans cesse croissant. Une fois revenue au plein-emploi, une économie peut-elle sans dommage supporter un endettement public de plus en plus élevé ? Les modalités de financement de la dépense publique, impôt vs endettement, obligations d’État vs émission monétaire, sont-elles sans incidence sur la dynamique de long terme de l’économie ? Les modèles décrivant l’évolution de la dette donnent les conditions de sa soutenabilité, en fonction du taux d’intérêt et du taux de croissance de l’économie. La spécificité de notre modèle réside dans la prise en compte du comportement des prêteurs, qui n’acceptent de détenir une quantité croissante de titres publics, qu’à condition de percevoir une rémunération plus élevée au regard du rendement du capital productif. L’équilibre macroéconomique s’en trouve affecté. À persister dans une séquence de déficits publics croissants, on risque des déboires, (i) l’éviction de la dépense publique par les charges d’intérêt (ii) le retour à la rigueur budgétaire (iii) ou le réveil de l’inflation.
Effects of curing time and intensity and polishing technique on color stability of bleach-shade composite resins
Authors: HashemiKamangar Sedighe Sadat , Jafari Soheil , Rouhaninasab Marzieh 
Published: June 2023

Background:
Despite the improvements in optical properties of composite resins, their color stability is still a matter of concern. This study aimed to assess the curing time and intensity and polishing technique on color stability of bleach-shade composite resins.

Materials and Methods:
In this in vitro, experimental study, 128 discs (1 mm × 8 mm) were fabricated from two composite resins. The specimens fabricated from each composite were assigned to 8 subgroups (n = 8) based on the curing time and intensity and polishing with polishing points or discs. After polishing, the color parameters of specimens were measured by EasyShade spectrophotometer according to the CIEL* a*b* color system. The specimens were then immersed in tea solution, and their color parameters were measured again. Color change (ΔE) was calculated and analyzed at 0.05 level of significance. SPSS 25 was used for data analysis. Univariate four-way ANOVA was applied to assess the effects of composite type, curing time, curing intensity, and technique of polishing on ΔE of composite resins. Since the interaction effects were significant, subgroup analysis was performed by t-test. The level of significance for this test was set at 0.05.

Results:
The effects of curing intensity and polishing technique were significant on ΔE (P < 0.05). Filtek Z350 XBW composite specimens polished by polishing points experienced lower color change than those polished with discs. The minimum ΔE of Gradia XBW composite was recorded in specimens that underwent high-intensity curing for 20 s and were polished with polishing points while the maximum ΔE was recorded in specimens that underwent high-intensity curing for 20 s and were polished with discs.

Conclusion:
In all groups except on (Filtek, polishing with Disk, curing time = 20 s), high-intensity curing and polishing with polishing points were more effective and caused lower color change compared with low-intensity curing and polishing with discs.
A comparative evaluation of the antimicrobial effect of chamomile, Aloe vera-green tea, and chlorhexidine mouthwashes on some oral bacterial species
Authors: Naghsh Narges , Moghareabed Ahmad , Nematnejad Mahsa , Yaghini Jaber , Sadeghi Sayed Mohsen 
Published: June 2023

Background:
Plant compounds such as Aloe vera, green tea, and chamomile have been increasingly used in recent years to achieve oral health. This study aimed to determine the antimicrobial effect of chamomile (Matrika), A. vera-green tea, and chlorhexidine (CHX) mouthwashes on some oral bacterial species.

Materials and Methods:
This prospective experimental study investigated the antimicrobial properties of three mouthwashes, including chamomile (Matrika), A. vera -green tea, and CHX as well as distilled water as control on five bacterial species, including Streptococcus Oralis, Streptococcus sanguis, and Streptococcus mutans as primary colonizers and Porphyromonas gingivalis and Eikenella corrodens as secondary colonizers. Colony-forming unit was used to count the colonies and disc diffusion and well diffusion methods were used to measure the diameter of zone of inhibition. Data were analyzed by SPSS (version 22) software using descriptive statistics, ANOVA, Tukey, Kruskal–Wallis, and Mann–Whitney tests (α = 0.05).

Results:
CHX had a significantly higher antibacterial effect than the other two mouthwashes in all three methods (P < 0.001). Further, the herbal mouthwashes in all three methods had a statistically significant effect on the bacterial species (P < 0.001). A. vera-green tea mouthwash had a significantly higher effect than chamomile mouthwash (Matrika) on all bacterial species except for S. sanguis (P < 0.05).

Conclusion:
The findings showed that herbal mouthwashes had potentially antibacterial effects, but these effects were significantly lower than that of CHX. However, more clinical studies are needed to prove the current findings.
Green synthesis, characterization, acaricidal, larvacidal, and repellent activities of copper nanoparticles of Astragalus sinicus against Hyalomma anatolicum
Authors: Gattan Hattan S. , Al-Ahmadi Bassam M. , Shater Abdullah F. , Majeed Qais A. H. , Alazemi Maha S. , Alanazi Abdullah D 
Published: June 2023

Objective:
To green synthesize and characterize copper nanoparticles (CuNPs) using Astragalus sinicus, as well as evaluate the acaricidal, larvacidal, and repellent activities of CuNPs against Hyalomma anatolicum (H. anatolicum), one of the most prevalent ticks infesting cattle in Saudi Arabia.

Methods:
CuNPs were green synthesized by adding the Astragalus sinicus extract to a copper sulfate solution. The acaricidal, larvicidal, and repellent activities of CuNPs against H. anatolicum were assessed via the adult immersion test, the larval packet test, and the vertical movement behavior of tick larvae, respectively. The effects of CuNPs on acetylcholinesterase as well as oxidative enzyme activities were examined.
Results: The green synthesized CuNPs displayed a spherical form with a size range of 15-75 nm. After exposure of adult H. anatolicum to different concentrations of CuNPs, the viability rate of adult H. anatolicum and the mean number, weight, and hatchability of eggs were noticeably reduced, in comparison to the control group (P<0.001). In addition, the viability rate of larvae considerably declined (P<0.001) with the LC50 and LC90 values of 11.30 and 20.34 μg/mL, respectively. The maximum repellent activity of CuNPs was observed at 50, 100, and 200 μg/mL with complete repellent activity after 60, 120, and 180 min of exposure, respectively. CuNPs, mainly at ½LC50 and LC50 concentrations, markedly suppressed the acetylcholinesterase activity of the larval stage of H. anatolicum (P<0.001). Moreover, CuNPs, mainly at LC50 dose, significantly elevated malondialdehyde level while declining glutathione-S-transferase level in H. anatolicum larvae (P<0.001).

Conclusions:
CuNPs show potent acaricidal, larvicidal, and repellent activities against adults and larvae of H. anatolicum. However, further studies must be performed to clarify the precise mechanisms and the efficacy of CuNPs in practical use.
Need for a diagnostic algorithm for acute encephalitis syndrome: An approach to changing paradigm
Authors: Amrutha D , Chandran Priya , Rahim Asma Ayesha , Bindu V , Aswathy Raj S. V 
Published: June 2023

Abstract

Introduction:
Acute encephalitis syndrome (AES) refers to a symptom complex that may be caused due to a wide range of etiologies. Outbreaks of AES have occurred in the recent past contributing to significant morbidity and mortality. Identification of the etiology of AES will help in early treatment and containment of outbreaks.

Objective:
To assess the need for a diagnostic algorithm for AES and to develop a prototype algorithm for AES to be used in the region.

Materials and Methods:
Secondary data regarding AES from the surveillance unit of our institution was used. In addition, focus group discussion with stakeholders involved in the diagnosis, treatment, and surveillance of AES was done to identify the challenges in diagnosis and develop an algorithm for AES to be used in the region.

Results and Discussion:
Of the 767 AES cases reported during the study period, only 38% had a confirmatory diagnosis. Common viral etiologies included herpes simplex virus and adenovirus. Rare etiologies viz Nipah and West Nile were also documented. The varied etiologies pose challenges in diagnosis as multiple tests are required. A diagnostic algorithm was developed, taking into consideration the facilities available. Challenges in diagnosis are due to infrastructural shortcomings like lack of point-of-care tests and the nonavailability of viral panels for simultaneous testing for pathogens.

Conclusion:
Region-specific diagnostic algorithm may be developed taking into consideration of the common etiological agents in the region, which will help in the early identification of outbreaks and help in the institution of containment measures.