bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dissemination event on research in fluorides and dental fluorosis in Latin America - Santiago, Chile, October 18, 19 and 20, 2023
Authors: Vivian Gallará Raquel , Hugo Ponce Rubén , Farith González-Martinez , Consuelo Fresno Maria , Ana Armas-Vega , Eleanor Velez Maria , Heriberto Núñez , Rosmeri Salas Juana , Emeterio Marino , Ismael Yévenes 
Published: March 2024

The activities developed in the Dissemination Day of the FONIS SA21I0117 project called “Academic dissemination events of the Faculty of Dentistry of the University of Chile and entities participating in the study with foreign professors” are presented with the Agenda: Research in Fluorides and Dental Fluorosis”. This activity took place on October 18, 19 and 20, 2023 at the Faculty of Dentistry of the University of Chile, Santiago, Chile (1). The activities carried out included a: I) Symposium on “Dental Fluorosis in Latin America”, with the participation of researchers from Argentina, Chile, Colombia, Ecuador, Paraguay and Peru. II) Seminar on “Feeding in children from 0 to 12 months in Chile” and III) Presentation of results of research on “Fluorides” and Fluorosis developed in Latin American countries. In the fluorosis Symposium section, six research experiences were presented by researchers from 6 presentations were made from Argentina, Colombia, Chile, Ecuador, Paraguay, and Peru. At the seminar on Nutrition in children under 1 year of age in Chile there were three presentations from three government entities in the country. The presentations of free works on fluorides and fluorosis in Latin America included one work from Argentina, two from Chile, one from Colombia, two from Ecuador, one from Brazil, and one from Peru. As the production of scientific works during the event was extensive and very varied, on this occasion we will present only the expanded summaries of the round table on “Dental Fluorosis in Latin America”.
PENENTUAN HARGA JUAL KOPI BUBUK ARABIKA FLORES BAJAWA DI KOPERASI SERBA USAHA FA MASA DESA BEIWALI KECAMATAN BAJAWA KABUPATEN NGADA
Authors: Putri Yuliana Harisna , Kapa Maximillian M.J. , Bano Maria 
Published: March 2024

This research was carried out at the Fa Masa, Beiwali subdistrict, Bajawa district, Ngada Regency, in May-June 2023. The purpose of this study was to find out 1) Determination of the selling price of Arabica Flores Bajawa ground coffee at the Fa Masa and 2) The difference profit derived from each package size from the sale of Flores Bajawa Arabica Coffee Powder at the Fa Masa. The data collected is in the form of primary and secondary data. Primary data was obtained through interviews with informants, namely managers and employees who work at the Fa Masa and secondary data obtained from jurnal literature, and previous research. To answer the first objective, the Full Costing method, and objectived were used. Secondly, the qualitative descriptive analisis method was used The results of the research showed that Fa Masa multi-purpose cooperative determiners the selling price of ground coffee packaging sizes at a price namely for a 500 gram packaging for IDR 90.000, a 250 gram packaging for IDR 45.000 and 100 gram for IDR 20.000. the profits obtained and sales of coffee in 500 gram packages amounted to Rp. 1,838,555, while profits from sales of 250 gram and 100 gram packages amounted to Rp. 631,005, and Rp. 238,055.
A miniature swimmer actuated by a PZT ring ultrasonic underwater propulsion system
Authors: Qian Yuan , Kong Deqing , Nagasaki Daiki , Aoyagi Manabu , Kurosawa Minoru Kuribayashi 
Published: March 2024

Abstract
This study investigates a scheme utilizing a ring transducer for an acoustic underwater propulsion system. Acoustic underwater propulsion systems are well suited for the inspection and repair of underwater robots due to their small size, high power density, and simple structure. Previous research has focused on self-propelled swimmers utilizing disc transducers. However, the radial vibration component of disc transducers makes it difficult to provide propulsion for an acoustic underwater propulsion system driven by an acoustic driving force. Pure longitudinal vibration requires a greater thickness to achieve the same vibration area, resulting in higher impedance and reduced driving efficiency. In this paper, simulation, and measurements of vibration distribution demonstrate that a ring transducer exhibits a vibration distribution closely resembling pure longitudinal vibration. A prototype swimmer using a ring transducer was fabricated for experimental evaluation through measurements of admittance characteristics, zero-speed propulsion, and no-load speed in water.
DMD maskless lithography optimization based on an improved genetic algorithm
Authors: Huang Shengzhou , Tang Yuanzhuo , Ren Bowen , Wu Dongjie , Pan Jiani , Tian Zhaowei , Jiang Chengwei , Li Zhi , Huang Jinjin 
Published: March 2024

Abstract
In this paper, we propose an effective method for optimizing mask design using an enhanced genetic algorithm (GA), significantly boosting digital micromirror device (DMD) maskless lithography performance. After a thorough evaluation of various optimization techniques, we determined that the simulated annealing-enhanced GA (SA-GA) offers superior improvements in lithography simulations, thus optimizing mask design more effectively. Our findings reveal that this method achieves up to 88% and 75% enhancement in simulation accuracy for circular and heart-shaped patterns, respectively, surpassing the results of conventional Hopkins lithography simulations. The remarkable effect of improved GA in enhancing the quality of DMD digital lithography shows that it will have great potential in micro-fabrication applications, and paves the way for the realization of high-fidelity and efficient DMD digital lithography technology, which has excellent versatility and adaptability in the field of microelectronics manufacturing.
Photoelectrical characterization of heavily doped p-SiC Schottky contacts
Authors: Imabayashi Hiroki , Sawazaki Hitose , Yoshimura Haruto , Kato Masashi , Shiojima Kenji 
Published: March 2024

Abstract
The availability of photoelectrical characterizations of heavily Al-doped p-SiC Schottky contacts was clarified. We conducted a systematic study of four samples with different Al doping concentrations from 1 × 1018 to 5 × 1019 cm−3. Although the current–voltage (I–V) characteristics had lost rectification, reasonable Schottky barrier height (qϕ
B) values were obtained up to 1 × 1019 cm−3 by capacitance voltage, photo response, and scanning internal photoemission microscopy (SIPM) measurements. In the two-dimensional characterization by SIPM, large photocurrent spots corresponding with low qϕ
B were observed in an average density of 103 to 104 cm−2. However, except for these spots, a high uniformity of about 2 meV standard deviation was obtained for qϕ
B over the entire observed electrodes. These results indicate that SIPM is able to characterize the inhomogeneity of heavily doped p-SiC contacts with very leaky I–V characteristics.
Integration Between Satellite Images and Spectral Analysis Using The ASD Device to Distinguish Wheat and Barley Plants
Authors: Hamid Basman Younis , Ali Sabah Hussein 
Published: March 2024

The cultivation of wheat and barley crops is one of the most important crops cultivated in Iraq, which contributes to the economic and social development in the country. Iraq seeks to adopt economic policies aimed at cultivating the two crops and undermining their import with the aim of self-sufficiency in them. The current study relied on studying the spatial distribution of the two crops in Nimrud sub-district and the possibility of distinguishing between them by remote sensing data, where a landsat 8 images acquired on March 5, 2020 were used, then a digital processing was performed on them. The spectral signature of the two crops was measured, the NDVI was calculated, then the supervised classification was performed by (ILWIS) program. The results showed the appropriateness of choosing the satellite image in March, which is the season for planting these two crops, as they constitute the two main crops in this period before planting other summer agricultural crops, which helped in identifying and distinguishing the two crops. The results also showed that the wheat crop is predominantly cultivated in the region, with an area of (271,797) km2, while the area of land cultivated with barley was small, with an area of (7,303) km2.
Identifying Bullying and Its Relationship with Mental Health Problem Among Adolescents: A Scoping Review
Authors: Amin Yusron , Haswita Haswita 
Published: March 2024

Bullying action was still as trend and current issue, especially among adolescence. This was related to increasing incidence per year and its large impact especially on mental health problems. Where adolescence's mental health was a long-term asset because of its influence on development level and quality of life among adolescents in the future. The study aims was to identify bullying and its relationship with mental health problem among adolescence. The study design was a scoping review. The searching literature using journal database PubMed (MEDLINE), Proquest, ScienceDirect, and Google Scholar through entering keywords bullying, mental health problem, adolescence. 12 articles selected from 384 articles. It reported that increasing bullying incidents among adolescence were associated with gender, age, role in bullying, and type of bullying. Majority adolescence who experience bullying were at high risk of experiencing mental health problem especially depression, anxiety, and even suicidal idea and perpetration. There were correlation between bullying incidence with mental health problem among adolescence. The study result expecting could give an understanding to adolescence regarding to bullying and its huge negative impact on mental health, so that bullying action among adolescence could be stopped.
Orbital Stability and Secular Dynamics of the Proxima Centauri Planetary System
Authors: Livesey Joseph R. , Barnes Rory , Deitrick Russell 
Published: March 2024

Abstract
The two innermost planets of the Proxima Centauri system are separated by just 0.02 au, inducing strong gravitational interactions between them. We assess this interaction by leveraging fast orbital stability indicators and find that orbital stability is very likely if the initial eccentricities of planets b and d are less than ∼0.2, but cannot confirm stability at larger values. We find that stability is not strongly affected by the true masses of the planets or by the distant planet c. However, mutual inclinations between 95° and 142° often result in unstable motion. We further explore the long-term evolution of the orbits in these stable regions of parameter space and find that circularization can take over 5 Gyr. This tidal evolution could support surface energy fluxes in excess of 1 W m−2 for over 1 Gyr, possibly affecting planet b’s habitability.
Multiple Emission Lines of Hα Emitters at z ∼ 2.3 from the Broad- and Medium-band Photometry in the ZFOURGE Survey
Authors: Chen Nuo , Motohara Kentaro , Spitler Lee , Nakajima Kimihiko , Momose Rieko , Kodama Tadayuki , Konishi Masahiro , Takahashi Hidenori , Kushibiki Kosuke , Kono Yukihiro , Terao Yasunori 
Published: March 2024

Abstract
We present a multiple emission line study of ∼1300 Hα emitters (HAEs) at z ∼ 2.3 in the ZFOURGE survey. In contrast to the traditional spectroscopic method, our sample is selected based on the flux excess in the ZFOURGE K

s
broadband data relative to the best-fit stellar continuum. Using the same method, we also extract the strong diagnostic emission lines for these individual HAEs: [O iii] λ
λ4959, 5007 and [O ii] λ
λ3726, 3729. Our measurements demonstrate good consistency with those obtained from spectroscopic surveys. We investigate the relationship between the equivalent widths (EWs) of these emission lines and various galaxy properties, including stellar mass, stellar age, star formation rate, specific star formation rate, and ionization state (O32). We have identified a discrepancy between HAEs at z ∼ 2.3 and typical local star-forming galaxies observed in the Sloan Digital Sky Survey, suggesting the evolution of lower gas-phase metallicity (Z) and higher ionization parameters (U) with redshift. Notably, we have observed a significant number of low-mass HAEs exhibiting exceptionally high EW[O iii]. Their galaxy properties are comparable to those of extreme objects, such as extreme O3 emitters and Lyα emitters at z ≃ 2–3. Considering that these characteristics may indicate potential strong Lyman continuum leakage, higher-redshift analogs of the low-mass HAEs could be significant contributors to the cosmic reionization. Further investigations of this particular population are required to gain a clearer understanding of galaxy evolution and cosmic reionization.
Zone of Preferential Heating for Minor Ions in the Solar Wind
Authors: Holmes Janelle , Kasper Justin , Klein Kristopher G. , Lepri Susan T. , Raines Jim M. 
Published: March 2024

Abstract
The properties of minor ions in the solar wind are important indicators of the state of the solar corona and the heating processes it undergoes as it expands. Evidence of preferential heating of minor ions has been observed in the solar wind, and is believed to be active up to a certain radial boundary, beyond which thermalization due to Coulomb collisions predominates. Building on previous works that calculated the location of this boundary for alpha particles, this work calculates the outer radial boundary of the zone of preferential heating for selected heavy ions in the solar wind. This analysis uses ion data from the Solar Wind Ion Composition Spectrometer and proton data from the Solar Wind Electron, Proton, and Alpha Monitor aboard the Advance Composition Explorer spanning the years from 1998 through to 2011. Observations of proton and ion temperatures, velocities, and densities, and fixed parameters derived from temperature, density, and velocity scaling laws are used in a model function to predict the radial boundary and excess temperature at the boundary via reduction of the χ
2/degrees of freedom statistic. In this study, the values of the radial boundary of the preferential heating zone were quite high when compared to what was previously found for alpha particles, but a clear scaling relationship between excess temperature and ion properties was observed.
Discovery of Radial Spectral Hardening in the Hot Bubble of Planetary Nebula BD+30°3639 with Median Energy Imaging
Authors: Montez Rodolfo 
Published: March 2024

Abstract
We apply an imaging analysis technique to study the spatial distribution of the X-ray spectral hardness across the hot bubble of planetary nebula BD+30°3639. Hot bubble emission is typically photon starved, thus limiting the methods for spatial–spectral analysis; however, this technique uses the statistics of photon energies across the nebula to identify spatial variations in the X-ray spectral hardness. Using the median energy value of the X-ray photons, we identified a rise in median energy values toward the projected edge of the nebula, which we refer to as radial spectral hardening. We explored the origin of this radial spectral hardening with an X-ray spectral analysis of distinct regions of high and low median energy values. Given the results of the X-ray spectral fits and the fact that the hot bubble is embedded within a young, dense, planetary nebula, we conclude that the radial spectral hardening is due to an increased column density at the projected nebular edge.
The Optical to Infrared 0.6–5.3 μm Dust Extinction Law of the Milky Way with JWST NIRSpec: Westerlund 2
Authors: Wang Shu , Chen Xiaodian 
Published: March 2024

Abstract
The interstellar extinction law is important for interpreting observations and inferring the properties of interstellar dust grains. Based on the 993 prism/CLEAR spectra from the James Webb Space Telescope (JWST), we investigate the 0.6–5.3 μm interstellar dust extinction law. We propose a pair method to obtain the reddening curves based only on JWST observed spectra. Most of the high-extinction sources are toward the young star cluster Westerlund 2. The infrared 1.0–5.3 μm reddening curves agree with the power law A

λ
∝ λ
−α
well. We determine an average value of α = 1.98 ± 0.15, which is consistent with the average value of the Galaxy. We find that α may be variable and independent of R

V
. With the derived α, we convert the reddening curves into the extinction curves and establish the nonparameterized α-dependent extinction curves in the wavelength range of 0.6–5.3 μm. At λ < 1 μm, the derived extinction law is not well described by the parameterized power-law-type curve. Our nonparameterized α-dependent extinction curves are suitable for the extinction correction of JWST-based photometry and spectra measurements at 0.6–5.3 μm. We also provide the extinction coefficients for the JWST NIRCam bandpasses with different α.
The Expertise Finder: Using NASA ADS for Panel Reviewer Selection
Authors: Volz Máire , Hoare Isabelle , Harris Kaniyah , Helfenbein Mallory , Cucchiara Antonino 
Published: March 2024

Abstract
Astronomical research is often made possible by the utilization of different resources that support members of the community in their research endeavors (e.g., telescopes access, or funds). Often, the entities that provide these resources establish a competitive process, which include the submission, by interested parties, of research proposals describing the research objectives and how the resources will be used to reach them. These proposals are evaluated by “ad hoc” panels of researchers, that provide a ranked list of the proposals based on their scientific relevance and other factors. This is also true for many NASA funding opportunities. In this article we present an open-sourced tool, the Expertise Finder, that simplifies the reviewers identification process. Expertise Finder  provides NASA officials ways to scout prospective reviewers at small, less resourced, institutions that may have fewer opportunities to present and publish their research work with respect to colleagues at larger institutions.
Toward Prebiotic Chemistry on Titan: Impact Experiments on Organic Haze Particles
Authors: Pearce Ben K. D. , Hörst Sarah M. , Cline Christopher J. , Cintala Mark J. , He Chao , Sebree Joshua A. , MacKenzie Shannon M. , Daly R. Terik , Pontefract Alexandra J. , Pesciotta Cara 
Published: March 2024

Abstract
Impacts are critical to producing the aqueous environments necessary to stimulate prebiotic chemistry on Titan’s surface. Furthermore, organic hazes resting on the surface are a likely feedstock of biomolecules. In this work, we conduct impact experiments on laboratory-produced organic haze particles and haze/sand mixtures and analyze these samples for life’s building blocks. Samples of unshocked haze and sand particles are also analyzed to determine the change in biomolecule concentrations and distributions from shocking. Across all samples, we detect seven nucleobases, nine proteinogenic amino acids, and five other biomolecules (e.g., urea) using a blank subtraction procedure to eliminate signals due to contamination. We find that shock pressures of 13 GPa variably degrade nucleobases, amino acids, and a few other organics in haze particles and haze/sand mixtures; however, certain individual biomolecules become enriched or are even produced from these events. Xanthine, threonine, and aspartic acid are enriched or produced in impact experiments containing sand, suggesting these minerals may catalyze the production of these biomolecules. On the other hand, thymine and isoleucine/norleucine are enriched or produced in haze samples containing no sand, suggesting catalytic grains are not necessary for all impact shock syntheses. Uracil, glycine, proline, cysteine, and tyrosine are the most unstable to impact-related processing. These experiments suggest that impacts alter biomolecule distributions on Titan’s surface, and that organic hazes co-occurring with fine-grained material on the surface may provide an initial source for further prebiotic chemistry on Titan.
La politique commerciale des États au service des stratégies des grandes entreprises
Authors: Bouët Antoine 
Published: March 2024

Bien loin des paradigmes classiques, la théorie économique moderne démontre que la politique commerciale peut créer du pouvoir de marché… ou en détruire, selon qu’il s’agisse d’entreprises nationales ou étrangères. Subvention à la production ou à l’exportation, quota ou tarif douanier, subvention à l’investissement en recherche et développement, subvention forfaitaire à entrer dans une activité, droit de douane anti-dumping… beaucoup d’instruments traditionnels de la politique commerciale permettent de remplir ces objectifs; encore faut-il les manier avec prudence.
Comment créer des promotions efficaces et profitables
Authors: Raju Jagmohan , Hoch Steve , Kahn Barbara , Chandon Pierre 
Published: March 2024

Quand est-il le plus profitable de faire des promotions ? Comment organiser celles-ci de la façon la plus efficace ? Trois professeurs célèbres de la Wharton School apportent leur réponse, dans des interviews avec Pierre Chandon. Jagmohan Raju analyse le rôle des promotions pour l’industriel et les situations où celui-ci doit en organiser. Steve Hoch explique comment les détaillants devraient raisonner à propos des promotions. Barbara Kahn décrit comment les entreprises peuvent mettre sur pied des promotions plus efficaces si elles comprennent comment et pourquoi les consommateurs y réagissent.
Quelles perspectives de développement pour les prospectus promotionnels des distributeurs ?
Authors: Volle Pierre 
Published: March 2024

Les prospectus représentent une part importante des budgets de communication promotionnelle des distributeurs et semblent répondre à des objectifs stratégiques. Dans cet article, nous tentons de déterminer les perspectives offertes à ce média, face à l’évolution des stratégies commerciales des enseignes et à l’évolution des formes de communication. Nous montrons que les prospectus s’adaptent aux nouvelles conditions de la concurrence entre distributeurs, mais que leur efficacité peut être questionnée ; finalement, ce sont les conditions de financement par les industriels qui déterminent en grande partie la rentabilité de ce média et donc ses perspectives de développement.
L’école
Authors: Delabrière Thomas 
Published: March 2024

Cet article fait le point sur le développement d’une nouvelle forme de promotion en France : aujourd’hui, de plus en plus d’annonceurs font la promotion de leurs marques auprès des enfants dans l’enceinte même des écoles. Ce texte fait le point sur les différentes techniques utilisées, sur les enjeux de cette évolution ainsi que sur les questions éthiques qu’elle soulève.
La place des services de qualité dans une économie mondiale
Authors: Langeard Eric 
Published: March 2024

Si la place de la qualité dans les services ne peut être remise en question, il est possible que sa pratique soit handicapée, à court terme, en raison de la mise en œuvre de la mondialisation pour être relancée, à moyen terme, compte tenu de nouvelles évolutions. La mondialisation entraîne quatre réponses de la part des entreprises de service : nombre et importance record des concentrations d’entreprises, diminution forte du nombre des innovations de service, développement de la néo-taylorisation et politiques agressives de baisse de prix. Aucune de ces réponses n’est favorable à la qualité. On peut espérer que la mondialisation sera digérée en quelques années et deux évolutions fortes rendront les stratégies de qualité indispensables. Il s’agit d’une évolution juridique vers l’obligation de résultat pour le prestataire. La seconde évolution, c’est Internet. Les réseaux virtuels vont entraîner une exigence de valeur ajoutée et donc de qualité pour éviter des guerres de prix destructrices .