bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of Leadership and Work Motivation on Employee Performance At UD Jati Utama Mojokerto
Authors: Fernando Marten Adamas 
Published: September 2022

UD Jati Utama is a company engaged in the wood processing industry with the raw materials used coming from Kalimantan. This company was founded in 2012 by only producing furniture and furniture from teak wood. In 2020 - 2021 there are problems faced by UD Jati Utama related to employee performance and motivation. This problem is indicated by the number of absenteeism which has increased from the previous year. As a result, there were additional job desks for other employees which caused the wood production to be less than optimal.
This study aims to determine the effect of leadership and work motivation on the performance of UD Jati Utama employees. The population in this study were employees of UD Jati Utama Mojokerto. The research sample was taken using the saturated sample technique with as many as 60 samples. The analytical method used is multiple linear regression. The results of this study state that leadership has effect on employee performance. Work motivation has an effect on employee performance.
SAFETY OF SIMULTANEOUS LAPAROSCOPIC APPENDECTOMY IN COMBINATION WITH LAPAROSCOPIC HERNIA REPAIR (TAPP). A SERIES OF CLINICAL CASES
Authors: Gallyamov E. A. , Agapov M. A. , Wu Zhenghao , Kakotkin V. V. , Wan Jiaming , Song Penghao , Zhang Xinjian , Wang Yaohui , Zhang Zilong 
Published: September 2022

Aim: To evaluate the technical feasibility and safety of a simultaneous surgery: laparoscopic appendectomy in combination with transabdominal preperitoneal hernia repair.Methods: The study was a retrospective analytical one. The medical histories were studied and postoperative monitoring of eleven patients hospitalized with acute appendicitis who underwent simultaneous surgery: laparoscopic appendectomy with simultaneous laparoscopic plastic surgery of clinically significant inguinal hernia was carried out. During the statistical analysis, the following parameters were evaluated: the timing of postoperative recovery, the frequency of early postoperative complications and the frequency of recurrence of inguinal hernia a year after surgery.Results: The surgery was successfully performed in all 11 patients. There were no cases of infectious complications of the surgical intervention area. Acute urinary retention was registered in one patient in the early postoperative period. In one case, an early adhesive intestinal obstruction was diagnosed, which was resolved with conservative treatment. There were no cases of recurrent inguinal hernia during the year.Conclusion: laparoscopic appendectomy in combination with transabdominal preperitoneal hernia repair can be used in the treatment of acute appendicitis in combination with inguinal hernia in the absence of signs of gangrenous appendicitis with purulent peritonitis. The low statistical power of the study does not allow us to draw conclusions about the safety of this approach for patients of the older age group with a high comorbidity index.
Destruction of Long-period Comets
Authors: Jewitt David 
Published: September 2022

Abstract
We identify a sample of 27 long-period comets for which both nongravitational accelerations and Lyα-based gas production rates are available. Seven of the 27 comets (i.e., ∼25%) did not survive perihelion because of nucleus fragmentation or complete disintegration. Empirically, the latter nuclei have the smallest gas production rates and the largest nongravitational accelerations, which are both indicators of small size. Specifically, the disintegrating nuclei have a median radius of only 0.41 km, one-quarter of the 1.60 km median radius of those surviving perihelion. The disintegrating comets also have a smaller median perihelion distance (0.48 au) than do the survivors (0.99 au). We compare the order-of-magnitude timescale for outgassing torques to change the nucleus spin, τ

s
, with the time spent by each comet in strong sublimation, Δt, finding that the disrupted comets are those with τ

s
< Δt. The destruction of near-Sun long-period comets is thus naturally explained as a consequence of rotational breakup. We discuss this process as a contributor to Oort’s long mysterious “fading parameter.”
Differential Proper Motion Spin of the Hipparcos and Gaia Celestial Reference Frames
Authors: Makarov Valeri V. 
Published: September 2022

Abstract
The Hipparcos catalog provides the first epoch of the celestial reference frame (CRF) in the optical domain and serves as an indispensable tool to verify and improve the Gaia CRF for the brighter stars (V < 11 mag) and to identify the elusive astrometric binary stars with dim or invisible companions, including long-period exoplanets. The systems of positions in Hipparcos and Gaia cannot be directly compared, because they refer to two different mean epochs. It is shown that the proper motion systems for carefully filtered common stars are not statistically consistent within the given formal errors. The vector field of proper motion differences is fitted with 126 vector spherical harmonics up to degree 7 revealing a global pattern at high signal-to-noise ratios, including the three terms of rigid rotation. The origin of the differential spin and other large harmonic terms is investigated by producing a similar decomposition of the Gaia−HG proper motion field, where HG stands for the long-term proper motions derived from the Hipparcos and Gaia DR3 positions, for the same sample of stars. Hipparcos proper motions emerge as the largest source of sky-correlated distortions of the multiepoch optical CRF with a median value of ∼190 μas yr−1 and a global spin of ∼226 μas yr−1, while the Hipparcos positions and Gaia EDR3 proper motions are explicitly consistent by construction at a level of ∼10 μas yr−1. The latter, however, include multiple distortions of higher degree, which should be taken into account in astrometric applications using the HG field.
The Effect of Molecular Cloud Properties on the Kinematics of Stars Formed in the Trifid Region
Authors: Kuhn Michael A. , Hillenbrand Lynne A. , Feigelson Eric D. , Fowler Ian , Getman Konstantin V. , Broos Patrick S. , Povich Matthew S. , Gromadzki Mariusz 
Published: September 2022

Abstract
The dynamical states of molecular clouds may affect the properties of the stars they form. In the vicinity of the Trifid Nebula (d = 1180 ± 25 pc), the main star cluster (Trifid Main) lies within an expanding section of the molecular cloud; however, ∼0.°3 to the north (Trifid North), the cloud’s velocity structure is more tranquil. We acquired a Chandra X-ray observation to identify pre-main-sequence stars in Trifid North, complementing a previous observation of Trifid Main. In Trifid North, we identified 51 candidate pre-main-sequence stars, of which 13 are high-confidence Trifid members based on Gaia EDR3 parallaxes and proper motions. We also reanalyzed the membership of Trifid Main and separated out multiple background stellar associations. Trifid North represents a stellar population ∼10% as rich as Trifid Main that formed in a separate part of the cloud. The 1D stellar velocity dispersion in Trifid North (0.6 ± 0.2 km s−1) is 3 times lower than that in Trifid Main (1.9 ± 0.2 km s−1). Furthermore, in Trifid Main, proper motions indicate that the portion of the star cluster superimposed on the optical nebula is expanding. Expansion of the H ii region around the O-star HD 164492A, and the resulting gas expulsion, can explain both the motions of the stars and gas in Trifid Main. Contrary to previous studies, we find no evidence that a cloud–cloud collision triggered star formation in the region.
The Spiderweb Protocluster is Being Magnetized by Its Central Radio Jet
Authors: Anderson Craig S. , Carilli Christopher L. , Tozzi Paolo , Miley G. K. , Borgani S. , Clarke Tracy , Di Mascolo Luca , Liu Ang , Mroczkowski Tony , Pannella Maurilio , Pentericci L. , Rottgering H. J. A. , Saro A. 
Published: September 2022

Abstract
We present deep broadband radio polarization observations of the Spiderweb radio galaxy (J1140-2629) in a galaxy protocluster at z = 2.16. These yield the most detailed polarimetric maps yet made of a high-redshift radio galaxy. The intrinsic polarization angles and Faraday rotation measures (RMs) reveal coherent magnetic fields spanning the ∼60 kpc length of the jets, while ∼50% fractional polarizations indicate these fields are well ordered. Source-frame ∣RM∣ values of ∼1000 rad m−2 are typical, and values up to ∼11,100 rad m−2 are observed. The Faraday-rotating gas cannot be well mixed with the synchrotron-emitting gas, or stronger-than-observed depolarization would occur. Nevertheless, an observed spatial coincidence between a localized ∣RM∣ enhancement of ∼1100 rad m−2 , a bright knot of Lyα emission, and a deviation of the radio jet provide direct evidence for vigorous jet-gas interaction. We detect a large-scale RM gradient totaling ∼1000 s rad m−2 across the width of the jet, suggesting a net clockwise (as viewed from the active galactic nuclei) toroidal magnetic field component exists at tens-of-kiloparsec scales, which we speculate may be associated with the operation of a Poynting–Robertson cosmic battery. We conclude the RMs are mainly generated in a sheath of hot gas around the radio jet, rather than the ambient foreground protocluster gas. The estimated magnetic field strength decreases by successive orders of magnitude going from the jet hotspots (∼90 μG) to the jet sheath (∼10 μG) to the ambient intracluster medium (∼1 μG). Synthesizing our results, we propose that the Spiderweb radio galaxy is actively magnetizing its surrounding protocluster environment, with possible implications for theories of the origin and evolution of cosmic magnetic fields.
The Roles of Flux Tube Entropy and Effective Gravity in the Inward Plasma Transport at Saturn
Authors: Wing S. , Thomsen M. F. , Johnson J. R. , Mitchell D. G. , Allen R. C. , Ma X. , Delamere P. A. 
Published: September 2022

Abstract
The inward plasma transport at the Saturnian magnetosphere is examined using the flux tube interchange stability formalism developed by Southwood & Kivelson. Seven events are selected. Three cases are considered: (1) the injected flux tube and ambient plasmas are nonisotropic, (2) the injected flux tube and ambient plasmas are isotropic, and (3) the injected flux tube plasma is isotropic, but the ambient plasma is nonisotropic. Case 1 may be relevant for fresh injections, while case 3 may be relevant for old injections. For cases 1 and 2, all but one event have negative stability conditions, suggesting that the flux tube should be moving inward. For case 3, the injections located at L > 11 have negative stability conditions, while four out of five of the injections at L < 9 have positive stability conditions. The positive stability condition for small L suggests that the injection may be near its equilibrium position and possibly oscillating thereabouts—hence the outward transport if the flux tube overshot the equilibrium position. The flux tube entropy plays an important role in braking the plasma inward transport. When the stability condition is positive, it is because the entropy term, which is positive, counters and dominates the effective gravity term, which is negative for all the events. The ambient plasma and drift-out from adjacent injections can affect the stability and the inward motion of the injected flux tube. The results have implications for inward plasma transport in the Jovian magnetosphere, as well as other fast-rotating planetary magnetospheres.
Spatial Scales and Time Variation of Solar Subsurface Convection
Authors: Getling Alexander V. , Kosovichev Alexander G. 
Published: September 2022

Abstract
Spectral analysis of the spatial structure of solar subphotospheric convection is carried out for subsurface flow maps constructed using the time–distance helioseismological technique. The source data are obtained from the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory from 2010 May to 2020 September. A spherical harmonic transform is applied to the horizontal velocity divergence field at depths from 0 to 19 Mm. The range of flow scales is fairly broad in the shallow layers and narrows as the depth increases. The horizontal flow scales increase rapidly with depth, from supergranulation to giant-cell values, and indicate the existence of large-scale convective motions in the near-surface shear layer. The results can naturally be interpreted in terms of a superposition of differently scaled flows localized at different depth intervals. There is some tendency toward the emergence of meridionally elongated (banana-shaped) convection structures in the deep layers. The total power of the convective flows is anticorrelated with the sunspot number variation over the solar activity cycle in shallow subsurface layers, and positively correlated at larger depths, which is suggestive of the depth redistribution of the convective flow energy due to the action of magnetic fields.
Ultraviolet Spectroscopy and TARDIS Models of the Broad-lined Type Ic Supernova 2014ad
Authors: Kwok Lindsey A. , Williamson Marc , Jha Saurabh W. , Modjaz Maryam , Camacho-Neves Yssavo , Foley Ryan J. , Garnavich Peter , Maeda Keiichi , Milisavljevic Dan , Pandya Viraj , Dai Mi , McCully Curtis , Pritchard Tyler , Singhal Jaladh 
Published: September 2022

Abstract
Few published ultraviolet (UV) spectra exist for stripped-envelope supernovae and none to date for broad-lined Type Ic supernovae (SNe Ic-bl). These objects have extremely high ejecta velocities and are the only supernova type directly linked to gamma-ray bursts (GRBs). Here we present two epochs of HST/STIS spectra of the SN Ic-bl 2014ad, the first UV spectra for this class. We supplement this with 26 new epochs of ground-based optical spectra, augmenting a rich spectral time series. The UV spectra do not show strong features and are consistent with broadened versions of other SN Ic spectra observed in the UV. We measure Fe ii 5169 Å velocities and show that SN 2014ad has even higher ejecta velocities than most SNe Ic both with and without observed GRBs. We construct models of the SN 2014ad UV+optical spectra using tardis, a 1D Monte Carlo radiative-transfer spectral synthesis code. The models fit the data well at multiple epochs in the optical but underestimate the flux in the UV, likely due to simplifying assumptions. We find that high densities at high velocities are needed to reproduce the spectra, with ∼3 M
⊙ of material at v > 22,000 km s−1, assuming spherical symmetry. Our nebular line fits suggest a steep density profile at low velocities. Together, these results imply a higher total ejecta mass than estimated from previous light-curve analysis and expected from theory. This may be reconciled by a flattening of the density profile at low velocity and extra emission near the center of the ejecta.
The Origin of the Relation Between Stellar Angular Momentum and Stellar Mass in Nearby Disk-dominated Galaxies
Authors: Du Min , Ho Luis C. , Yu Hao-Ran , Debattista Victor P. 
Published: September 2022

Abstract
The IllustrisTNG simulations reproduce the observed scaling relation between the stellar specific angular momentum (sAM) j
s and mass M
s of central galaxies. We show that the local j
s–M
s relation

log

j

s

=
0.55

log

M

s

+
2.77

develops at z ≲ 1 in disk-dominated galaxies. We provide a simple model that describes well such a connection between halos and galaxies. The index of 0.55 of the j
s–M
s relation comes from the product of the indices of the

j

tot

∝

M

tot

0.81

,

M

tot

∝

M

s

0.67

, and j
s ∝ j
tot relations, where j
tot and M
tot are the overall sAM and mass of the halo, respectively. A non-negligible deviation from tidal torque theory, which predicts

j

tot

∝

M

tot

2

/

3

, should be included. This model further suggests that the stellar-to-halo mass ratio of disk galaxies increases monotonically following a nearly power-law function that is consistent with the latest dynamical measurements. Biased collapse, in which galaxies form from the inner and lower sAM portion of their parent halos, has a minor effect at low redshifts. The retention factor of angular momentum reaches ∼1 in disk galaxies with strong rotations, and it correlates inversely with the mass fraction of the spheroidal component, which partially explains the morphological dependence of the j
s–M
s relation.
Distribution of snake species and snakebites in hotspots of Ethiopia
Authors: Gebrewold Gashaw , Colston Timothy J , Abebe Ashebir , Kourouma Karifa , Najjemba Robinah , Mulugeta Demise , Lumma Hailu , Abdella Sintayehu , Haile Tamrat , Zolfo Maria , Vanlerberghe Veerle 
Published: September 2022

Introduction: In Sub-Saharan Africa, snakebites are a public health problem. In Ethiopia, clinical cases have been described, but little information exists on snakebites burden and its geographical distribution. The aim of this study was to document the spatial distribution of venomous snakes and snakebites in Ethiopia.
Methodology: In a cross-sectional observational study, venomous snakes were collected during snake catching activities in six Ethiopian hotspot areas between April 2015 and September 2020. Species and habitat were described. In the hotspot areas, routine health information data on reported snakebites was collected in 78 districts and subsequently used to map annual incidence per district.
Result: A total of 333 snakes were collected and 14 species were identified. The most prevalent species were Bitis arietans, Bitis arietanus somalica, Echis pyramidum, known as vipers, and Naja pallida, known as cobra. The highest number of snakes (75) was observed in the Northwest and Eastern parts of Ethiopia, mostly in cultivation and man-made farm land, wooded and moist dry savanna. In each hotspot a wide variety of species was observed, although composition was different. The highest snakebite incidence overlapped with the high snakes densities in Northwest Ethiopia. The snakebite annual average incidence at district level was very heterogeneous and ranged from < 15 cases/100,000 inhabitants (44% of the districts) to 309.2 cases/100,000 inhabitants.
Conclusions: Snake diversity and distribution, linked to high incidence of snakebites in the hotspots, suggests a close interconnection between human, animal and environmental systems and could inform the need for antivenoms per geographical locality.
Préparer les demandeurs d’emploi à la formation ?
Authors: Farvaque Nicolas 
Published: September 2022

L’article est basé sur une évaluation du programme Prépa compétences mené dans le cadre du Plan d’investissement dans les compétences ( pic ). À l’instar d’autres dispositifs préparatoires, il s’agit d’un sas basé sur un accompagnement individuel fort, à partir ici d’ateliers de « réentraînement » et de mises en situation dans des centres de formation ou en stage en entreprise. Son évaluation permet d’interroger les fondements du paradigme du Plan d’investissement dans les compétences, visant à aller vers certains publics cibles pour développer leurs chances et capacités d’accès à la formation.
Pour une éducation à un entrepreneuriat conscient
Authors: Levesque Rino , Champy-Remoussenard Patricia , de Miribel Julien 
Published: September 2022

Rino Levesque a été interviewé par deux chercheurs en Sciences de l’éducation et de la formation intéressés par ses idées originales. Au fil de cet entretien il revient sur son parcours et la manière dont il a développé cette approche éducative en partant du constat que les difficultés d’apprentissage des jeunes sont mal prises en compte par l’école et par la société pour finir par proposer une nouvelle approche éducative, l’« entrepreneuriat conscient ». Il s’agit d’amener les jeunes à « s’entreprendre » de manière « consciente », à apprendre à agir positivement pour soi, pour autrui et pour la nature et de leur donner l’occasion, dans le temps scolaire, de s’exprimer, de bâtir leur confiance et leur estime d’eux-mêmes à travers des projets très concrets, où ils sont mis en action, en réflexion, et valorisés. C’est finalement pour la jeunesse le défi de l’engagement. Plus de 200 écoles primaires, secondaires et de formation professionnelle ont actuellement été développées selon ce concept.
Coaching professionnel et développement de compétences entrepreneuriales en contexte scolaire libanais
Authors: Hage Mirna , Rached Patricia , Gharib Yvette 
Published: September 2022

Cette étude tente de comprendre comment le coaching professionnel, adressé à cinq chefs d’établissements scolaires, a contribué à renforcer leurs compétences entrepreneuriales, favorisant l’amorce de changement en contexte marqué par une familiarité et une diversité confessionnelle. Elle aborde le quotidien scolaire par le regard des acteurs et se base sur l’analyse de contenu, à partir de données issues d’entretiens semi-directifs, de focus groups et de journaux de bord. Ces données ont été collectées et fournies par un coach professionnel à trois chercheuses de la Faculté des sciences de l’éducation de l’Université Saint-Joseph de Beyrouth (USJ). Elles ont mené une étude a posteriori au sein du Laboratoire de recherche en vue de comprendre la conduite du changement amorcé par le coaching professionnel des chefs d’établissements scolaires. Les résultats ont fait montre de développement de compétences entrepreneuriales en termes de créativité, d’agilité et d’esprit d’initiative, basées sur un « servant leadership » et insérées dans une structure institutionnelle.
Endoscopic Transnasal Transmaxillary Approach to Orbital Apex through the Meningo-Orbital Band
Authors: Amin Sameh M. , Talat Ahmed M. , Mahmoud Mohammad S. , Osman Ashraf Abdellatif , Hussein Ayman , Hegazy Ahmed , Biswas Arundhati , Mostafa Hamdi Nabawi 
Published: September 2022

Abstract

Background:
Extradural transcranial release of the meningo-orbital band occupying the lateral part of the superior orbital fissure is used to approach the orbital apex and middle cranial fossa. The authors tested the feasibility of the release of the meningo-orbital band via an endonasal transmaxillary approach.

Materials and Methods:
Five injected cadaveric heads were assessed for dimensions of superior orbital fissure by computerized tomography. An endonasal transsphenoid transpterygoid approach was done to the superior orbital fissure and annulus of Zinn medially, down to the maxillary nerve. The periorbita was dissected superolaterally to expose the greater wing of the sphenoid and the meningo-orbital band. The superior orbital fissure was decompressed inferiorly by drilling the greater wing of the sphenoid and the maxillary strut after transposition of the maxillary nerve. The meningoorbital band was cut at the junction of the lateral part of the superior orbital fissure and the periorbita exposing the frontotemporal dural junction. The edge of the lesser wing of the sphenoid was drilled toward the annulus of Zinn and the optic canal. The temporal lobe dura was separated from the periorbita and lateral cavernous dural wall at the meningo-orbital band and the ophthalmic nerve.

Results:
The superior orbital fissure had an oblique angle (mean: 39 ± 2.75 degrees) to the midsagittal plane, the length of its lateral part corresponding to the meningo-orbital band was (mean: 6.08 ± 2.58 mm) and the distance from its lateral end to midline was (mean 2.97 ± 0.11 cm). The meningo-orbital band was released in 10 cadaveric head sides with a distinct plane between the periorbita and the dura propria. Transmaxillary endoscopy provided less orbital retraction and better visualization of the lateral wall of the cavernous sinus.

Conclusion:
Endonasal transmaxillary release of the meningoorbital band is feasible, allowing exposure of the orbital apex and the middle cranial fossa.