bluuebunny/crossref_metadata_2025_split huggingface dataset:
Core problem solving (CPS) – Kepner Tregoe Approach to Strengthen Quality Performance at PT. UTC Aerospace System Bandung (UTAS BANDUNG)
Authors: Nofrianto E Erwan , Basri Mursyid Hasan 
Published: April 2024

Purpose: Aiming of this research to see effectiveness of Core Problem Solving (CPS) with Kepner Tregoe approach able to improve %SRR performance from 0.73% in 2022 to become 0.5% in the next 5 years and take the right solutions to be planned in 2023.
Methods: Study on this case at UTAS Bandung with focus to see %SRR performance that drive by amount scrap, rework and repair part as called cost of poor quality (CoPQ) divide by total amount part sold to customer. Core Problem Solving (CPS) combine with Kepner Tregoe Method able to strengthen quality performance. Starting with problem identification following by problem analysis use pareto diagram, ishikawa diagram (fishbone diagram), five why analysis to get the correct root cause and come out with alternatives solution to prevent future fault.
Results/findings: Based on problem analysis had been found the highest CoPQ contributor come from Prismatic cell around 61% or $154,000 of total CoPQ $254,300 at 2022. To reach 0.5% target in 2027 need to improve around $81,115 within 5 years or similar with $16,223 per year. Core problem solving (CPS) combine with Kepner Tregoe method will apply to achieve quality performance as planned.
Limitations: This research only referring to data that available in SAP based on performance in 2022 without counting return part from reject customer and reject part caused by supplier.
Contribution: With implement core problem solving (CPS) combine with Kepner Tregoe Approach showing the right direction and good impact for quality performance at UTAS Bandung. It gives concern to develop army of core problem solving by encourage more people learn about it. It will also be able to copy as benchmark for other site in global groups.
VIOLÊNCIAS DE GÊNERO EM NARRATIVAS LITERÁRIAS: HERANÇAS HISTÓRICAS, FORMAS E CONTEÚDOS EM BEST-SELLERS CONTEMPORÂNEOS
Authors: Eiras Coelho Soares Ana Carolina 
Published: April 2024

Este artigo aborda a influência cultural e os aspectos de gênero presentes na trilogia "Cinquenta Tons de Cinza", uma obra de grande sucesso com mais de quarenta milhões de cópias vendidas em trinta e sete países. A análise proposta explora como essa narrativa de amor e erotismo, voltada principalmente para o público feminino e escrita por uma autora mulher, incorpora elementos complexos de prazer, erotismo e violência.
A trilogia apresenta o personagem Christian Grey, como um homem controlador que busca dominar sexual e socialmente as mulheres, especialmente a personagem principal, Anastasia Steele. O estudo também se baseia nas definições dos termos "prazer", "erotismo" e "violência" do "The American Heritage Dictionary" para analisar como esses conceitos são tratados na obra. A pesquisa visa desvendar as nuances complexas das interações entre prazer, erotismo e violência na trilogia, bem como sua influência nas representações culturais e nas concepções de gênero na sociedade contemporânea.
Comparative effectiveness of packaging design pheromone product to sustainable pest management of rhinoceros beetle in oil palm plantation
Authors: Hendarjanti Henny 
Published: April 2024

The rhinoceros beetle (Oryctes rhinoceros L.) is the primary pest of oil palm plants. Rhinoceros beetle pest attacks cause severe damage to immature and mature plants. They produce an aggregation pheromone identified as ethyl-4-methyloctanoate (E4-MO). Rhinoceros beetles use this pheromone to find suitable habitats for foraging and breeding in the landscape of oil palm plantations. The mass use of pheromone traps has been used to monitor and capture imago stages of O. rhinoceros in the implementation of integrated pest management. Many commercial E4-MO pheromone products have been developed on the market with different packaging designs. The research aimed to determine packaging designs that increase attractiveness and effectiveness in catching rhinoceros beetles. The research was conducted at an oil palm plantation in Indragiri Hulu Regency, Riau. This research was an experimental method. The four design pheromone (permeable sachet, micropore sachet, tube dispenser and double dispenser) were installed in each oil palm planting block (planting area ± 30 ha/block). The number of installations for each design is three units/block with five replications. The assessment of rhinoceros beetle catches was carried out over four months. The results showed significant differences in the catch of rhinoceros beetles. The 4th month of observations showed that the double dispenser packaging design resulted in a higher total catch of rhinoceros beetles, with an average of 161.40. Meanwhile, permeable sachets, microporous sachets, and tube dispensers were 138.20, 139.80 and 91.00 beetles, respectively. Determining the pheromone packaging design is crucial to providing an effective and efficient pest management strategy.
ESTIMASI SUMBERDAYA NIKEL LATERIT DI KABUPATEN BANGGAI PROVINSI SULAWESI TENGAH
Authors: Malim A. N. L. , Amsah L. O. Y. , . Surianti 
Published: April 2024

Estimasi sumberdaya memiliki peranan penting dalam mengetahui nilai kuantitas suatu endapan. Perhitungan sumberdaya dilakukan sebelum proses penambangan dilaksanakan. Perhitungan sumberdaya ini salah satunya dilakukan untuk mengetahui apakah proses penambangan layak untuk dilakukan. Penelitian ini bertujuan untuk mengetahui sumberdaya nikel laterit pada PT Anugrah Sakti Utama. Metode inverse distance wighting digunakan untuk penentuan estimasi sumberdaya nikel laterit pada Zona Limonit dan Saprolit karena sesuai dengan kondisi yang terdapat pada daerah penelitian. PT Anugrah Sakti Utama menetapkan kadar COG Ni ≥ 1.5 % dan densitasnya 1.5 ton/m3. Daerah pengaruh horizontal yang digunakan 25 meter sedangkan daerah vertikal satu (1) meter dalam melakukan estimasi sumberdaya. Hasil perhitungan estimasi sumberdaya dengan COG Ni ≥ 1.5 % diperoleh volume endapan bijih nikel laterit sebesar 18.703.124 m3 dan tonase sumberdaya yang terindikasi sebesar 28.054.688 ton.
Planteamiento de Biorremediación y Prácticas Ancestrales en la Laguna de Colta, Chimborazo-Ecuador para Mejorar la Calidad de Agua que Sale del Sistema Lacustre
Authors: Veloz Goyes Diego Fernando 
Published: April 2024

La presente propuesta se basa en plantear un manejo ambiental mediante biorremediación y prácticas ancestrales en un segmento de la Laguna de Colta mediante el uso de Ingahuachos con plantas acuáticas para mejorar la calidad de agua que sale del sistema lacustre, considera la problemática socioeconómica y ambiental que tiene la laguna de Colta y los habitantes que se sustentan de esta, lo que se plantea en este estudio es demostrar que a través de una técnica ancestral agrícola como los Ingahuachos se puede generar un uso adecuado del recurso hídrico, bajar los niveles de contaminación del agua, crear un agro ecosistema adecuado para la producción agrícola en altura, y a su vez generar una conciencia ambiental de adaptación al cambio climático en el sector. Tomando en cuenta que se utilizará elementos del entorno (Totora, Azolla, Papiro) accesibles a la población de sector, se rescata un conocimiento ancestral y a su vez se da una alternativa sustentable y sostenible a la problemática de la laguna de Colta. Una vez implementado se pretende que pueda ser imitado o aplicado en todos los sectores de la laguna. Las encuestas realizadas validan la estrategia de fitorremediación de las aguas de la Laguna de Colta mediante el uso de ingahuachos y plantas nativas de la zona. Las proyecciones del proyecto una vez implementado dan un panorama viable en la factibilidad de este, puesto que no requiere una gran inversión y a su vez cumple con parámetros de sustentabilidad.
Candidate Main-belt Asteroids for Surface Heterogeneity
Authors: Hasegawa Sunao , Marsset Michaël , DeMeo Francesca E. , Hanuš Josef , Binzel Richard P. , Bus Schelte J. , Burt Brian , Polishook David , Thomas Cristina A. , Geem Jooyeon , Ishiguro Masateru , Kuroda Daisuke , Vernazza Pierre 
Published: April 2024

Abstract
Large terrestrial bodies in our solar system like the Earth, Mars, Mercury, and the Moon exhibit geologically complex surfaces with compositional heterogeneity. From past studies using large telescopes and spacecraft, it was shown that asteroids with diameters larger than 100 km also show surface heterogeneity at hemispheric scales, while on smaller objects, such features remain to be detected. Here, we investigate candidates for surface heterogeneity in a sample of 130 main-belt asteroids using multiepoch spectroscopic data from the MIT–Hawaii Near-Earth Object Spectroscopic Survey, which has been observing asteroids for about 20 yr using a self-consistent observation technique. Twelve conservative candidates with spectra more than 3σ apart from each other at 2.4 μm and 52 optimistic candidates for surface heterogeneity are detected. These candidates include eight objects already reported as being heterogeneous. Our study suggests that the size boundary between small homogeneous asteroids and larger heterogeneous objects, if it exists, is lower than 100 km. A-type asteroids have a higher proportion of heterogeneous candidates than other asteroids. This may be because olivine, which is the main surface constituent of these objects, reacts more efficiently to space weathering with respect to pyroxene, such that a similar range of surface ages will translate into a wider range of optical-to-near-infrared spectral slopes in the case of A-type bodies.
Modeling JWST MIRI-MRS Observations of T Cha: Mid-IR Noble Gas Emission Tracing a Dense Disk Wind
Authors: Sellek Andrew D. , Bajaj Naman S. , Pascucci Ilaria , Clarke Cathie J. , Alexander Richard , Xie Chengyan , Ballabio Giulia , Deng Dingshan , Gorti Uma , Gaspar Andras , Morrison Jane 
Published: April 2024

Abstract
[Ne ii] 12.81 μm emission is a well-used tracer of protoplanetary disk winds due to its blueshifted line profile. Mid-Infrared Instrument (MIRI)-Medium Resolution Spectrometer (MRS) recently observed T Cha, detecting this line along with lines of [Ne iii], [Ar ii], and [Ar iii], with the [Ne ii] and [Ne iii] lines found to be extended while the [Ar ii] was not. In this complementary work, we use these lines to address long-debated questions about protoplanetary disk winds regarding their mass-loss rate, the origin of their ionization, and the role of magnetically driven winds as opposed to photoevaporation. To this end, we perform photoionization radiative transfer on simple hydrodynamic wind models to map the line emission. We compare the integrated model luminosities to those observed with MIRI-MRS to identify which models most closely reproduce the data and produce synthetic images from these to understand what information is captured by measurements of the line extents. Along with the low degree of ionization implied by the line ratios, the relative compactness of [Ar ii] compared to [Ne ii] is particularly constraining. This requires Ne ii production by hard X-rays and Ar ii production by soft X-rays (and/or EUV) in an extended (≳10 au) wind that is shielded from soft X-rays, necessitating a dense wind with material launched on scales down to ∼1 au. Such conditions could be produced by photoevaporation, whereas an extended magnetohydrodynamic (MHD) wind producing equal shielding would likely underpredict the line fluxes. However, a tenuous inner MHD wind may still contribute to shielding the extended wind. This picture is consistent with constraints from spectrally resolved line profiles.
The Initial Conditions of Clustered Core Collapse: Multiwavelength Analysis of Oph A SM1N and N6 at 100 au Resolution
Authors: Friesen Rachel K. , Bourke Tyler L. , Caselli Paola , Di Francesco James , Li Zhi-Yun , Pineda Jaime E. 
Published: April 2024

Abstract
We present new Atacama Large Millimeter/submillimeter Array (ALMA) continuum and NH2D, N2D+, and H2D+ line emission at matched, ∼100 au resolution toward the dense star-forming cores SM1N and N6 within the Ophiuchus molecular cloud. We determine the density and temperature structure of SM1N based on radiative transfer modeling and simulated observations of the multiwavelength continuum emission at 0.8, 2, and 3 mm. We show that SM1N is best fit by either a broken power-law or Plummer-like density profile with high central densities (n ∼ 108 cm−3), and an inner transition radius of only ∼80–300 au. The free-fall time of the inner region is only a few ×103 yr. The continuum modeling rules out the presence of an embedded first hydrostatic core (FHSC) or protostar. SM1N is therefore a dynamically unstable but still starless core. We find that NH2D is likely depleted at high densities within SM1N. The nonthermal velocity dispersions increase from NH2D to N2H+ and H2D+, possibly tracing increasing (but still subsonic) infall speeds at higher densities as predicted by some models of starless core contraction. Toward N6, we confirm the previous ALMA detection of a faint, embedded point source (N6-mm) in 0.8 mm continuum emission. NH2D and N2D+ avoid N6-mm within ∼100 au, while H2D+ is not strongly detected toward N6. The distribution of these tracers is consistent with heating by a young, warm object. N6-mm thus remains one of the best candidate FHSCs detected so far, although its observed (sub)millimeter luminosity remains below predictions for FHSCs.
Fossil Signatures of Main-sequence Convective Core Overshoot Estimated through Asteroseismic Analyses
Authors: Lindsay Christopher J. , Ong J. M. Joel , Basu Sarbani 
Published: April 2024

Abstract
Some physical processes that occur during a star's main-sequence evolution also affect its post-main-sequence evolution. It is well known that stars with masses above approximately 1.1 M
⊙ have well-mixed convective cores on the main sequence; however, the structure of the star in the neighborhood of the convective core regions is currently underconstrained. We use asteroseismology to study the properties of the stellar core, in particular convective boundary mixing through convective overshoot, in such intermediate-mass stars. These core regions are poorly constrained by the acoustic (p) mode oscillations observed for cool main-sequence stars. Consequently, we seek fossil signatures of main-sequence core properties during the subgiant and early first-ascent red giant phases of evolution. During these stages of stellar evolution, modes of mixed character that sample the deep interior can be observed. These modes sample the parts of the stars that are affected by the main-sequence structure of these regions. We model the global and near-core properties of 62 subgiant and early first-ascent red giant branch stars observed by the Kepler, K2, and TESS space missions. We find that the effective overshoot parameter, α
ov,eff, increases from M = 1.0 M
⊙ to M = 1.2 M
⊙ before flattening out, although we note that the relationship between α
ov,eff and mass will depend on the incorporated modeling choices of internal physics and nuclear reaction network. We also situate these results within existing studies of main-sequence convective core boundaries.
The Reservoir of the Per-emb-2 Streamer
Authors: Taniguchi Kotomi , Pineda Jaime E. , Caselli Paola , Shimoikura Tomomi , Friesen Rachel K. , Segura-Cox Dominique M. , Schmiedeke Anika 
Published: April 2024

Abstract
Streamers bring gas from outer regions to protostellar systems and could change the chemical composition around protostars and protoplanetary disks. We have carried out mapping observations of carbon-chain species (HC3N, HC5N, CCH, and CCS) in the 3 mm and 7 mm bands toward the streamer flowing to the Class 0 young stellar object (YSO) Per-emb-2 with the Nobeyama 45 m radio telescope. A region with a diameter of ∼0.04 pc is located to the north at a distance of ∼20,500 au from the YSO. The streamer connects to this northern region, which is its origin. The reservoir has high density and low temperature (

n

H

2

≈
1.9
×

10

4

cm−3, T
kin = 10 K), which are similar to those of early-stage starless cores. By comparison of the observed abundance ratios of CCS/HC3N to the chemical simulations, the reservoir and streamer are found to be chemically young. The total mass available for the streamer is derived to be 24–34 M
⊙. It has been estimated that, if all of the gas in the reservoir were to accrete onto the Per-emb-2 protostellar system, the lifetime of the streamer would be (1.1–3.2) × 105 yr, suggesting that the mass accretion via the streamer would continue until the end of the Class I stage.
Formation of Polar Crown Filament Magnetic Fields by Supergranular Helicity Injection
Authors: Chen Huanxin , Xia Chun , Chen Hechao 
Published: April 2024

Abstract
To understand the magnetic fields of the polar crown filaments (PCFs) at high latitudes near polar regions of the Sun, we perform magnetofrictional numerical simulations on the long-term magnetic evolution of bipolar fields with roughly east–west polarity inversion lines (PILs) in a 3D spherical wedge domain near polar regions. The Coriolis-effect-induced vortical motions at the boundaries of several supergranular cells inject magnetic helicity from the photospheric boundary into the solar atmosphere. Supergranular-scale helicity injection, transfer, and condensation produce strongly sheared magnetic fields. Magnetic reconnections at footpoints of the sheared fields produce magnetic flux ropes (MFRs) with helicity signs consistent with the observed hemispheric helicity rule. The cross-sectional area of MFRs exhibits an uneven distribution, resembling a “foot-node-foot” periodic configuration. Experiments with different tilt directions of PILs indicate that the PCFs preferably form along PILs with the western end close to the polar region. The bending of PILs caused by supergranular flows, forming S-shape (Z-shape) PIL segments, promotes the formation of dextral (sinistral) MFRs. The realistic magnetic models we obtained can serve as starting points for the study of the plasma formation and eruption of PCFs.
White Dwarf Merger Remnants: The DAQ Subclass
Authors: Kilic Mukremin , Bergeron Pierre , Blouin Simon , Jewett Gracyn , Brown Warren R. , Moss Adam 
Published: April 2024

Abstract
Four years after the discovery of a unique DAQ white dwarf with a hydrogen-dominated and carbon-rich atmosphere, we report the discovery of four new DAQ white dwarfs, including two that were not recognized properly in the literature. We find all five DAQs in a relatively narrow mass and temperature range of M = 1.14–1.19 M
⊙ and T
eff = 13,000–17,000 K. In addition, at least two show photometric variations due to rapid rotation with ≈10 minute periods. All five are also kinematically old, but appear photometrically young, with estimated cooling ages of about 1 Gyr based on standard cooling tracks, and their masses are roughly twice the mass of the most common white dwarfs in the solar neighborhood. These characteristics are smoking gun signatures of white dwarf merger remnants. Comparing the DAQ sample with warm DQ white dwarfs, we demonstrate that there is a range of hydrogen abundances among the warm DQ population and that the distinction between DAQ and warm DQ white dwarfs is superficial. We discuss the potential evolutionary channels for the emergence of the DAQ subclass, suggesting that DAQ white dwarfs are trapped on the crystallization sequence and may remain there for a significant fraction of the Hubble time.
Territoire, travail institutionnel et co-création des politiques publiques locales : le cas de Venelles en Transition
Authors: Serval Sarah , Potz Magdalena , Hernandez Solange 
Published: April 2024

L’article vise à comprendre comment le territoire influence les modalités organisationnelles du travail institutionnel des managers territoriaux qui déploient la co-création face à des défis sociétaux. La co-création est perçue comme une solution à ces problèmes nécessitant des approches innovantes et collaboratives. Cependant, ces pratiques sont émergentes et doivent être adaptées au contexte. Les résultats de notre étude qualitative (étude de cas unique) montrent un modèle paradoxal de travail institutionnel : le territoire peut à la fois faciliter et compliquer le travail institutionnel des managers territoriaux. Leurs pratiques sont basées sur une logique hiérarchique et descendante, avec une organisation centralisée, fermée et interne du travail institutionnel lorsque le territoire facilite l’action. En revanche, lors du processus de co-création, le territoire complexifie le travail institutionnel qui repose sur une logique ascendante, des pratiques émergentes et une organisation dispersée, ouverte et territoriale du travail institutionnel. CODES JEL : O350, R580
Vers un effet de traitement paradoxal : les fablabs comme facilitateurs « accidentels » de l’entrepreneuriat des utilisateurs ?
Authors: Salgado Stéphane , Vellera Cyrielle 
Published: April 2024

Cette recherche vise à mettre en lumière le rôle facilitateur des fablabs non commerciaux et en accès libre, en matière d’entrepreneuriat commercial, en particulier pour les innovations émanant de figures d’entrepreneurs moins classiques : les utilisateurs. Dans cette perspective, des entretiens qualitatifs ont été menés auprès d’innovateurs-utilisateurs/entrepreneurs, d’une part, et de fab managers, d’autre part. À l’aide d’une démarche d’analyse basée sur les processus (« from maker to market »), trois contributions essentielles sont proposées : (1) les fablabs sont des facilitateurs à l’entrepreneuriat utilisateur mais « l’effet de traitement » qui en découle est limité, voire contre-productif ; (2) l’entrepreneuriat à vocation commerciale est contraire à la culture des fablabs , induisant ainsi un « effet de traitement » ambivalent ; (3) les capacités d’actions des fablabs tendent à se transformer vers de la préincubation « accidentelle ». Ces résultats viennent enrichir deux champs théoriques : l’entrepreneuriat par les utilisateurs et l’entrepreneuriat dans les fablabs et apportent de nouveaux éléments pour accompagner l’entrepreneuriat par les utilisateurs et pour mieux identifier les postures et les capacités d’actions des fablabs dans ce domaine. CODES JEL : L26, O30
À l’écoute des histoires en terre créole pour un soin aux enfants de la Creuse et de La Réunion
Authors: Feldman Marion , Lesouëf-Lebon Kristyan , Caron Christian , Viracaoundin Céline , Visnelda-Douzain Christine , Mansouri Malika 
Published: April 2024

L’article expose les résultats d’un des deux volets de la recherche clinique portant sur lesdits « enfants de la Creuse », soit des adultes réunionnais, qui, enfants, ont été séparés de leurs parents pour être déplacés en métropole entre 1962 et 1984. Il s’agit du travail réflexif d’un groupe de soignants, en majorité réunionnais. Penser un soin spécifique à La Réunion et à son histoire est apparu essentiel pour créer un dispositif clinique adapté à la situation de ceux qui repartent s’installer à La Réunion ou y retournent temporairement. Il s’agit également de soutenir les familles biologiques et de médiatiser les « retrouvailles familiales ». Ce travail réflexif s’est appuyé sur trois sources : les expériences cliniques des soignants réunionnais ; l’étude de textes ; les premiers résultats qui émergent des groupes de paroles en métropole, dits les « arbres à paroles » (qui est l’autre volet du dispositif de recherche). L’analyse de ces séances de travail conduit à la formalisation d’un dispositif clinique spécifique.