bluuebunny/crossref_metadata_2025 huggingface dataset:
PRECONCEPTION CARE BEHAVIOR AMONG HIGH-RISK WOMEN OF CHILDBEARING AGE
Authors: Tarsikah  , Dewi Wardha Imania  , Siti Asiyah
Published: December 2022

Women of childbearing age who are at high-risk have a higher proportion of death caused by pre-existing medical conditions aggravated by the pregnancy. Poor behavior and not carrying out preconception care will make this condition worsened. Meanwhile, the data of preconception care implementation in Indonesia still cannot be found. The research design was descriptive quantitative using a survey approach, with a population of 68 high-risk women of childbearing age, using purposive sampling with a total sample of 43 respondents who fulfilled the inclusion criteria. The instrument used was the preconception care behavior questionnaire tested for validity and reliability. The behavior of high-risk women of childbearing age in obtaining preconception health preparation information was enough (72.1%), anemia prevention and control behavior was poor (90,7%), the accuracy in spacing pregnancy was enough (41.9%), and the accuracy of rational contraceptive use was good (60.5%). Increasing promotive and preventive attempts in improving preconception care behavior in high-risk women of childbearing age are needed to prepare for healthy pregnancies in the future.
ASSESSMENT OF CHILD VIOLENCE:	PROTECTION POLICIES AND THE	IMPACT OF VIOLENCE ON CHILDREN
Authors: Putri Rizca Yunike , Musrifah Sri
Published: December 2022

Children are children whose position is a valuable treasure for their families, loved, and protected. However, in their development, children also often experience violent behavior, which is not uncommon for the perpetrators to be those closest to the child. In Indonesia, the crisis of child protection is shown by the increasing number of cases child abuse starting in 2019 until now. Various efforts to protect children are carried out globally through various international conventions and nationally with various laws ranging from the Civil Code to local government regulations. The rights and protection of children in Indonesia does not only contain formal law for children aged 0-18 but starts from the womb. However, these efforts have not been able to provide solutions and reduce cases that have occurred so far. This study seeks to describe how the policy on violence against children is and how it impacts on victims by using qualitative methods and literature review as data sources. The results of this study describe various policies that contain the rights and protection of children and the impact of violence on children.
Tohum Dergisi nin Serencamı
Authors: Önal Betül , Acuner Hacı Yusuf
Published: December 2022

Türkiye’de, 1951 yılında, yoğun çabalar sonucunda din eğitimi açısından imam hatip okulları için yeni bir sayfa açılmıştır. Akabinde siyasal yaşamın etkisi altında halkın ihtiyaçlarının baskısıyla da din eğitimi ve kurumları için sürekli değişen bir süreç başlamıştır. 1958 yılına gelindiğinde ilk mezunlarını vermeye başlayan imam hatip okullarının önünde çözülmesi gereken yeni sorunlar baş göstermiştir. Üniversite öğrenimine dair kısıtlama ve istihdam sorunları neticesinde imam hatip mensupları yüksek öğrenim için yüksek İslam enstitülerinin açılmasını bir çıkış olarak formülize etmişlerdir. Bu amaçla İstanbul’da imam hatip mezunlarının teşkilatlanmaya gitmesi ve fikirlerini yaymak için neşir organına ihtiyaç duyması ile İstanbul İmam Hatip Okulu Mezunları Cemiyeti ve Tohum dergisi ortaya çıkmıştır.
Tohum dergisi; günümüzdeki adı Önder İmam Hatipliler Derneği olan kuruluş çatısı altında 1963’ten bu yana yayınlanan bir dergidir. Dergi, kuruluşundan beri imam hatip okullarının, yüksek İslam enstitülerinin, ilahiyat fakültelerinin ve halkımızın din eğitimi alanındaki taleplerini, ihtiyaçlarını, sorunlarını dile getirme noktasında önemli bir rol oynamıştır. Dergi, imam hatip paydaşlarının ve dernek üyelerinin her alana dair fikir dünyasını Türk- İslam sentezi bağlamında yansıtmıştır.
Bu çalışmanın amacı din eğitimi açısından önemli bir kaynak olan derginin tanıtılması, metin tahlili ve dergi özelinde imam hatip okulları mezun ve mensuplarının düşünsel yapısını ortaya koymaktır.
Adaptive Resilience Building for Force Preservation to Battle Pandemic the Military Way
Authors: Rawat Samir , Deshpande Abhijit P. , Joshi Priya , Boe Ole , Piotrowski Andrzej
Published: December 2022

Resilience may be referred to as the capacity for positive adaptation and to quickly recover from difficulties and significant adversity. After examining operational definitions of related concepts, the article discusses resilience building exercises for functional fitness at the individual soldier level, to include among others, self-monitoring, self-evaluation, self-reinforcement, emotional regulation exercises, mindfulness training, relaxation and grounding exercises and importance of maintaining discipline and routine in the military. Using an acronym CARRIES, the article examines efforts to enhance resilience building through empirically validated cognitive, behavioural and intrapersonal skills originating from best practices learned in the military.
Uso de las tic y neuroeducación en estudiantes universitarios
Authors: Cobos Reina Angel Rodrigo , Ledesma Silva Yolanda Esperanza
Published: December 2022

El objetivo fue determinar la relación entre el uso de las TIC y la neuroeducación en el aprendizaje de los alumnos. La investigación fue de tipo cuantitativo con diseño correlacional descriptivo de corte transversal mediante un cuestionario virtual. La población de estudio fueron 367 estudiantes de la Universidad Central del Ecuador. Para la obtención de los resultados se utilizó el programa estadístico SPSS v.25. El coeficiente de correlación de Spearman dio un valor de 0.754, revelando que existe una correlación moderada positiva entre ambas variables TIC y neuroeducación. Conclusión: El 50% de docentes aplican gamificación para estimular la memoria visual.
Impacto y percepción de actividades de learning by teaching en estudiantes universitarios
Authors: De Obesso María de las Mercedes , Pérez Rivero Carlos Alberto , Cardona Herrero Sergio
Published: December 2022

Las metodologías docentes han ido adaptándose a los cambios de la sociedad, partiendo de un aprendizaje en el que el alumno tiene un papel más pasivo y se limita a escuchar una clase magistral, hasta aprendizajes más activos, utilizando metodologías como active learning, flipped learning, learning by teaching, rol play, entre otras.Esta investigación analiza la percepción de los estudiantes sobre el aprendizaje obtenido con la utilización de la metodología Learning by Teaching, para ello se trabaja con una muestra de 196 alumnos de Grados en Administración y Dirección de Empresas, Marketing y negocios digitales.
Emociones de Docentes en Ambientes Virtuales de Aprendizaje
Authors: Estrada Esquivel Ana Luisa
Published: December 2022

La investigación que se presenta es mixta. El objetivo fue describir las emociones generadas en contextos virtuales de profesores de instituciones educativas en países de habla hispana. La recolección de datos fue a través de un cuestionario con escala de tipo Likert La muestra fue de 37 profesores de países de habla hispana. Los resultados mostraron la existencia de emociones positivas, negativas y ambiguas. Las emociones fueron generadas por experiencias y creencias de si mismos, de sus estudiantes y sobre la tecnología. Se concluyó la importancia de generar recursos educativo digitales que permitan la identificación y gestión emocional.
¿Cómo promover el activismo socioambiental?
Authors: Varela-Losada Mercedes , Lorenzo-Rial María A. , Pérez-Rodríguez Uxío , Agrelo-Costas M. Eulalia
Published: December 2022

Actualmente son necesarias propuestas educativas que promuevan la sostenibilidad mediante activismo digital. El objetivo de este estudio fue evaluar la movilización de competencias digitales docentes a través de la creación de storytellings sobre la Fast Fashion. Su análisis mostró cómo estas experiencias pueden propiciar el desarrollo de capacidades de comunicación y colaboración, como son la participación para la creación de contenidos, la participación ciudadana en línea o la capacidad para compartir contenidos. Los vídeos creados relacionan las acciones cotidianas con las consecuencias socioambientales y llaman a la transición hacia formas de consumo conscientes, mostrando su potencial creativo e inspirador.
Confidence judgments are associated with face identification accuracy: Findings from a confidence forced-choice task
Authors: Jeckeln Géraldine , Mamassian Pascal , O’Toole Alice J.
Published: December 2022

Confidence is assumed to be an indicator of identification accuracy in legal practices (e.g., forensic face examination). However, it is not clear whether people can evaluate the correctness of their face-identification decisions reliably using confidence reports. In the current experiment, confidence in the correctness of the perceptual decision was measured with a confidence forced-choice methodology: Upon completion of two perceptual face-identity matching trials, the participants were asked to compare the two decisions and to select the trial on which they felt more confident. On each face-identity matching trial, participants viewed three face images (two same-identity images, one different-identity image) and were instructed to select the image of the different identity. In order to measure the extent to which difficulty level informs confidence decisions, we selected face-image triads using item-difficulty estimates extracted from psychometric modeling applied in a prior study. The difference in difficulty between the paired face-image triads predicted the proportion of high-confidence judgments allocated to the easier trial of the pair. Consistent with the impact of difficulty monitoring on confidence judgments, performance was significantly more accurate on trials associated with higher confidence. Overall, the results suggested that people reliably evaluate the correctness of their perceptual face-identity matching decisions and use trial difficulty to evaluate confidence.
STUDY ON MACHINING PROPERTIES AND SURFACE COATING PROPERTIES OF HEAT TREATED DENSIFIED POPLAR WOOD
Authors: CHENG AOKAI , TU DENGYUN , ZHU ZHIPENG , ZHOU QIAOFANG , WEI WEI , HU CHUANSHUANG , LIU XIANGHAO
Published: December 2022

In this study, a modification combining densification and heat treatment of poplar wood (Populus tomentosa Carr.) was carried out, and the machining properties of theunmodified poplar wood (control) and the heat treated densified wood (HTD)were tested and evaluated. Inaddition, the water-based UV paint was covered on the control and HTD respectively, and thesurface coating properties of them were evaluated. The results showed that: (1)Themachining properties of poplar wood were improved after theheat treatment-densification modification. The score of comprehensive machining properties of the HTD was 45 (excellent grade), while the score of the control was 36 (good grade). (2)The abrasion resistance, hydrophobicity and adhesion were improved after heat treatment-densification modification. Therefore, the modification combining densification and heat treatment played asignificant role in enhancing thevalue of wood.
USING EXOTIC SHRUBS AS A RESTORATION TOOL IN TUNISIAN ARID AREAS: EFFECTS ON UNDERSTOREY VEGETATION AND SOIL NUTRIENTS
Authors: MEZGHANI IMED
Published: December 2022

In this study, the effects of exotic and native shrubs Acacia salicinaand Retama raetamon understory vegetation and soil properties were assessed. Two sub-habitats, acanopied and anun-canopied sub-habitat (open grassland), were distinguished for each shrub species. Soil moisture was measured in both sub-habitats at 10 cm depth, and soil samples collected from theupper 10 cm soil, excluding litter and stones. Aboveground biomass, species density and species richness were also estimated. The soil organic matter, total N and extractable P were significantly higher under shrubs than open areas at all soil water contents. Soil water content did not differ significantly between studied shrubs. Aboveground biomass, species richness and the density of perennial species were significantly higher under shrub canopiesthan open areas. Among the two studied shrubs species, Retama raetamdisplayed the strongest positive effect, but without significant differences, on the understory vegetation. From this perspective, exotic shrubs can be regarded as a powerful and promising candidate that can be invested in not only theelaboration of multiple restoration programs but also in the generation of islands of resources.
INTENSIFICATION OF THE FREEZE-THAW PRETREATMENT OF DISINTEGRATED POPLAR WOOD
Authors: BOHÁČEK ŠTEFAN , PAŽITNÝ ANDREJ , HANDLOVSKÁ MICHAELA
Published: December 2022

Thisresearch wasfocused on the effect of water content in the cells of disintegrated Populus nigraL. on a freeze-thaw pretreatment method before an enzymatic hydrolysis. Two chipped andsieved fractions 2.5 mm and0.7 mm and two milled fractions,characterized as 18°SR (Shopper–Riegler index) and 37°SR,of the disintegrated 5 years old poplartree were used for ourexperiment. Glucose and xylose yields were measured after 24 and 48 hours ofenzymatic hydrolysis with a 15% load of the enzyme measured to a total cellulose content. Theinfluence of nine freeze-thaw cycles under -20°C and +20°C was considered. The results showed thatanincrease in moisture content positively affects yields in all fractions but adesirable result was achieved mainly for the 0.7 mm fraction where the total yield increased by about 16%.More effective wayis afiner wetbeating ofwood mass, while wood fibrereceivesmoisture already in the technological process.Thehighest glucan conversion 51,74% and the total hemicelluloses conversion 47,72% was achieved for the finest fraction 37°SR.Thehigher moisture content has a positive effect on the increase in theconversion of oligosaccharides, especially glucan, in chipped fractions.
Numerical simulation of the performance of an asymmetrical airfoil under extreme weather conditions
Authors: Rotich Ibrahim , Kollár László E.
Published: December 2022

This paper presents a numerical study of icing of a NACA2412 airfoil and the aerodynamic performance of the airfoil with ice accretion. The study analyzes the effects of liquid water content, accretion time and varying angles of attack (AoA) up to 200 on ice accretion and, consequently, on the aerodynamic coefficients of the airfoil. The free stream velocity and air temperature were kept constant in the simulations. Results revealed that the ratio of lift and drag coefficients was the highest after a short accretion time (i.e., about 20 minutes), but then it decreased significantly with accretion time. Ice accretion increased with time; its mass was the greatest at 100 of AoA. The results can be beneficial for designing blade shapes to optimize wind turbine performance during adverse weather conditions.
Habilidades gerenciales potenciales para empresas de la Zona de Planificación 3 – Ecuador
Authors: Pacheco Rodríguez Franklin Rodrigo , Bombón Orellana Nelson Danilo , Ortiz Coloma Hernán Paúl , Meléndez Torres Mentor Marcelo
Published: December 2022

Las habilidades gerenciales en Administración dentro de las empresas son muy importantes para la gestión empresarial, es por esto, que, los empresarios deben capacitarse y desarrollar dichas habilidades para ponerlas en práctica, de esta manera obtener resultados eficaces en los objetivos de planificación estratégica que se haya trazado la empresa, por lo anterior mencionado el objetivo que se plantea esta investigación es identificar las habilidades gerenciales potenciales para empresas de la Zona de Planificación 3 – Ecuador. Se utiliza un enfoque cualitativo – cuantitativo, con un método deductivo – transversal, se determina la población y muestra, siendo estos empresarios y profesionales graduados entre los años 2018 y 2019, a quienes se aplicó una encuesta estructurada, el instrumento de medición fue validado mediante la prueba Alfa de Cronbach con un índice de 0,972, lo que demuestra que tiene la confiabilidad necesaria para poder aplicarla, donde se obtiene como resultado la identificación de las habilidad gerenciales en Administración en orden de importancia según el análisis factorial realizado, el cual muestra como principal habilidad: Potencia la creatividad, según las dos muestras encuestadas.
Analysis of the low level of achievement in the english subject of the universidad tecnológica de Tecamachalco
Authors: Meléndez-Machorro Irma Eréndira , Valencia-Cruz Karina Guadalupe , Román-Ortiz Blanca , González-Pérez Manuel
Published: December 2022

Esta investigación involucra aspectos vitales como el dinamismo del docente, la aplicación de teorías de aprendizaje específicas para la enseñanza de una lengua extranjera y la aplicación de estrategias de comunicación. La presente investigación se desarrolló para conocer el porqué del bajo rendimiento en inglés en la Universidad Tecnológica de Tecamachalco. Se aplicó encuestas a 993 estudiantes de diferentes niveles con perfil de ingeniería. Las encuestas mostraron que la comunicación y la empatía son parte esencial del aula, y especialmente cuando se trata de enseñar una lengua extranjera, la zona de proximidad a la que se refiere Vygotsky es significativa porque los estudiantes refieren una necesidad de acompañamiento por parte del docente. Los resultados muestran que las técnicas de enseñanza que aplican los docentes son adecuadas y su metodología no afecta el proceso de enseñanza-aprendizaje.
RUANG KOMUNAL SEBAGAI RUANG PUBLIK SEBAGAI WADAH AKTIFITAS WARGA KAMPUNG ASEMPAYUNG SURABAYA
Authors: Hastorahmanto Prabani , Trisjanti Lucia , Putra Heristama , Setiawan Ferdinard , Febriyanti Nurul , Andika Andreas , Marcelino Fransiskus , Andeng  , Setiawan Ruth , Widodo Eric
Published: December 2022

Ruang publik terpadu sebagai ruang komunal di Kampung Asem Payung merupakan program pengabdian masyarakat yang dilakukan oleh Program Studi Arsitektur untuk menyediakan ruang  yang aman dan nyaman untuk berbagai jenis kegiatan sosial bagi warga. Persoalannya, tidak ada ruang publik untuk aktivitas seperti  warga dan aktivitas anak-anak. Metode penulisan yang digunakan adalah observasi lokasi secara langsung untuk melihat keadaan dengan diawali wawancara langsung dengan Ketua RT setempat. Hasil yang didapatkan dari kegiatan pengabdian dalam masyarakat ini adalah masterplan dan wujud dari ruang publik yang terbuka dengan saling terintegrasi yang prosesnya dilakukan dengan cara diskusi secara berkelompok dengan para warga. Rencana ini nantinya akan menjadi sebagai usulan pengajuan ruang publik terpadu agar bisa diwujudkan dan dapat menambahkan ruang untuk terjadinya aktivitas sosial untuk para warga agar dapat berkegiatan. Karena selama ini tidak ada tempat yang memadai sehingga ketika terjadinya aktivitas tersebut dapat mengganggu akses penggunaan jalan.
TAMAN RIMBAWAN CILIK SEBAGAI PENDIDIKAN KONSERVASI DI DESA NGENEP, KECAMATAN KARANGPLOSO, KABUPATEN MALANG
Authors: Hidayatullah Rifqi Rahmat , Budiman Mokhamad Asyief Khasan , Andareswari Novi , Hadiwijoyo Erekso , Gustian Moudy
Published: December 2022

Pendidikan konservasi pada anak-anak sangat penting dilakukan sebagai upaya menanamkan rasa kepedulian terhadap hutan dan lingkungan. Program Taman Rimbawan Cilik merupakan bentuk pengabdian masyarakat yang ditujukan untuk siswa sekolah dasar di sekitar UB Forest di Desa Ngenep Kabupaten Malang. Tujuan penulisan ini antara lain (1) menganalisis pengaruh pelaksanaan Taman Rimbawan Cilik, serta (2) menganalisis strategi pengembangan Taman Rimbawan Cilik untuk masa yang akan datang. Metode yang digunakan dalam pelaksanaan kegiatan ialah ceramah, diskusi, praktik dan permainan interaktif. Selanjutnya, evaluasi dilakukan melalui pre test dan post test. Data nilai diolah secara tabulasi untuk kemudian dilakukan analisis regresi. Sementara itu, analisis strategi pengembangan pendidikan konservasi dilakukan dengan melakukan studi literatur dan analisis deskriptif kualitatif. Berdasarkan hasil analisis, maka dapat disimpulkan bahwa pelaksanaan Taman Rimbawan Cilik memberikan peningkatan pengetahuan mengenai hutan dan lingkungan bagi siswa SDN 4 Ngenep. Selanjutnya, strategi pengembangan untuk masa yang akan datang antara lain: (1) persiapan yang lebih terstruktur; (2) pelaksanaan pendidikan konservasi lebih mengutamakan pengenalan langsung dengan alam dan permainan interaktif; (3) kerja sama dengan mitra untuk pelaksanaan kegiatan luar ruangan secara lebih luas; (4) pelaksanaan evaluasi kegiatan dengan metode yang tidak terstruktur agar mengurangi bias penilaian.
FORMULASI DAN UJI AKTIVITAS DEODORAN SPRAY EKSTRAK ETANOL HERBA KEMANGI TERHADAP BAKTERI Staphylococcus aureus
Authors: Indriaty Sulistiorini , Nina Karlina  , Nur Rahmi Hidayati  , Deni Firmansyah  , Rima Yulia Senja  , Yasmin Zahiyah
Published: December 2022

Kemangi (Ocimum sanctum L.) merupakan salah satu tanaman yang dapat digunakan sebagai antibakteri. Penelitian ini bertujuan untuk mengetahui apakah ekstrak etanol daun kemangi dapat diformulasikan menjadi deodoran spray dan pada konsentrasi berapa uji aktivitas terhadap bakteri Staphylococcus aureus menunjukkan hasil paling baik. Penelitian ini merupakan penelitian eksperimental. Ekstrak diperoleh dengan metode perkolasi menggunakan etanol 96%. Deodoran spray dibuat dengan variasi konsentrasi ekstrak etanol herba kemangi 8%, 10%, dan 12%. Sediaan dilakukan pemeriksaan skrining fitokimia (alkaloida, flavonoida, steroid/triterpenoid, saponin, dan tanin), uji stabilitas dengan metode cycling test (organoleptis, pH, bobot jenis, viskositas, dan waktu mengering), dan uji aktivitas terhadap bakteri Staphylococcus aureus menggunakan metode difusi sumuran. Ekstrak etanol herba kemangi konsentrasi 8%, 10%, dan 12% dapat diformulasikan menjadi sediaan deodoran spray dan formula yang memiliki hasil uji aktivitas terhadap bakteri Staphylococcus aureus paling baik ditunjukkan oleh formula 3.
Fast Multipole Method for Gravitational Lensing: Application to High-magnification Quasar Microlensing
Authors: Jiménez-Vicente J. , Mediavilla E.
Published: December 2022

We introduce the use of the fast multipole method (FMM) to speed up gravitational lensing ray tracing calculations. The method allows very fast calculation of ray deflections when a large number of deflectors, N
*, are involved, while keeping rigorous control on the errors. In particular, we apply this method, in combination with the inverse polygon mapping (IPM) technique, to quasar microlensing to generate microlensing magnification maps with very high workloads (high magnification, large size, and/or high resolution) that require a very large number of deflectors. Using FMM-IPM, the computation time can be reduced by a factor of ∼105 with respect to standard inverse ray shooting (IRS), making the use of this algorithm on a personal computer comparable to the use of standard IRS on GPUs. We also provide a flexible web interface for easy calculation of microlensing magnification maps using FMM-IPM (see https://gloton.ugr.es/microlensing/). We exemplify the power of this new method by applying it to some challenging interesting astrophysical scenarios, including clustered primordial black holes and extremely magnified stars close to the giant arcs of galaxy clusters. We also show the performance/use of FMM to calculate ray deflection for a halo resulting from cosmological simulations composed of a large number (N ≳ 107) of elements.
STITCH: A Subgrid-scale Model for Energy Buildup in the Solar Corona
Authors: Dahlin J. T. , DeVore C. R. , Antiochos S. K.
Published: December 2022

The solar corona routinely exhibits explosive activity, in particular coronal mass ejections and their accompanying eruptive flares, which have global-scale consequences. These events and their smaller counterparts, coronal jets, originate in narrow, sinuous filament channels. The key processes that form and evolve the channels operate on still smaller spatial scales and much longer timescales, culminating in a vast separation of characteristic lengths and times that govern these explosive phenomena. In this article, we describe implementation and tests of an efficient subgrid-scale model for generating eruptive structures in magnetohydrodynamics (MHD) coronal simulations. STITCH—STatistical InjecTion of Condensed Helicity—is a physics-based, reduced representation of helicity condensation: a process wherein small-scale vortical surface convection forms ubiquitous current sheets and pervasive reconnection across the sheets mediates an inverse cascade of magnetic helicity and free energy, thereby forming the filament channels. We have developed a formalism, STITCH, that abstracts these complex processes into a single term in Ohm’s law and the induction equation that directly injects tangential magnetic flux into the low corona. We show that our approach is in very good agreement with a full helicity condensation calculation that treats all of the dynamics explicitly, while enabling substantial reductions in temporal duration and spatial resolution. In addition, we illustrate the flexibility of STITCH at forming localized filament channels and at energizing complex surface flux distributions that have sinuous boundaries. STITCH is simple to implement and computationally efficient, making it a powerful technique for physics-based modeling of solar eruptive events.
Discovery of a Double Sequence of Blue Straggler Stars in the Core-collapsed Globular Cluster NGC 6256
Authors: Cadelano Mario , Ferraro Francesco R. , Dalessandro Emanuele , Lanzoni Barbara , Pallanca Cristina , Saracino Sara
Published: December 2022

We used a combination of high-resolution optical images acquired with the Hubble Space Telescope and near-IR wide-field data to investigate the stellar density profile and the population of blue straggler stars (BSSs) in the Galactic globular cluster NGC 6256, with the aim of probing its current stage of internal dynamical evolution. We found that the inner stellar density profile significantly deviates from a King model, while it is well reproduced by a steep cusp with a power-law slope α
cusp = −0.89, thus implying that the cluster is currently in the post-core-collapse (PCC) phase. This is also confirmed by the very high segregation level of the BSS population measured through the

A

rh

+

parameter. We also found that the distribution of BSSs in the color–magnitude diagram is characterized by a collimated blue sequence and a red more sparse component, as already observed in three other PCC clusters. A comparison with appropriate collisional models demonstrates that the vast majority of the BSSs lying along the collimated blue sequence is consistent with a generation of coeval (1 Gyr old) stars with different masses originated by an event that highly enhanced the collisional rate of the system (i.e., the core collapse). This study confirms that the segregation level of BSSs is a powerful dynamical diagnostic also of star cluster in a very advanced stage of dynamical evolution. Moreover, it pushes forward the possibility of using the morphology of BSSs in a color–magnitude diagram as a tracer of the core-collapse and subsequent dynamical evolutionary phases.
X-Ray Spectroscopic Evidence of Charge Exchange Emission in the Disk of M51
Authors: Zhang 张 Shuinai 水乃 , Wang Q. Daniel , Sun Wei , Long Min , Sun 孙 Jia 佳 , Ji Li
Published: December 2022

In the disks of spiral galaxies, diffuse soft X-ray emission is known to be strongly correlated with star-forming regions. However, this emission is not simply from a thermal-equilibrium plasma and its origin remains greatly unclear. In this work, we present an X-ray spectroscopic analysis of the emission from the northern hot spot; a region with enhanced star formation off the nucleus of M51. Based on the high spectral resolution data from XMM-Newton/Reflection Grating Spectrometer (RGS) observations, we unambiguously detect a high G ratio (

3.2

−
1.5

+
6.9

) of the O vii Heα triplet. This high G ratio is also spatially confirmed by oxygen emission-line maps from the same data. A physical model consisting of a thermal plasma and its charge exchange (CX) with neutral cool gas gives a good explanation for the G ratio and the entire RGS spectra. This model also gives a satisfactory characterization of the complementary Chandra ACIS-S data, which enables a direct imaging of the diffuse emission, tracing the hot plasma across the galaxy. The hot plasma has a similar characteristic temperature of ∼0.34 keV and an approximately solar metallicity. The CX contributes ∼50% to the diffuse emission in the 0.4–1.8 keV band, suggesting an effective hot/cool gas interface area about five times the geometric area of the M51 disk. Therefore, the CX appears to play a major role in the soft X-ray production and may be used as a powerful tool to probe the interface astrophysics, important for studying galactic ecosystems.
On the Local Structure of Stochastic Parker Spirals in the Solar Wind
Authors: Bian N. H. , Li Gang
Published: December 2022

We present a Langevin model describing the local structure of the interplanetary magnetic field lines. It is established on the basis of the analysis of the Lagrangian properties of strong Alfvénic turbulence, which provides a new perspective on the critical balance condition. The model is consistent with the

k

∥

−
2

spectrum of magnetic fluctuations derived from in situ measurements. We show that the magnetic field line diffusivity at the spacecraft position can be inferred from the wavelet analysis of one-point measurements of the fluctuating magnetic fields in the solar wind independently of the three-dimensional nature of the anisotropy.
Influence of Neutrino–Nuclear Reactions on the Abundance of 74Se
Authors: Song N. , Zhang S. , Li Z. H. , Li G. X. , Gao Z. C. , Wang H. K.
Published: December 2022

The p-nuclei are supposed to be produced in different astrophysical processes, such as rapid-proton capture, photonuclear reaction, and neutrino-induced reaction. To date, their abundance cannot be reasonably explained. In the present work, the cross sections of the 74Ge (ν

e
, e
−) 74As reaction are calculated with the theoretical and experimental B(GT) values, respectively. The abundance ratios between 74Se and 74Ge produced from the neutrino process (ν-process) are estimated based on the simple hypothesis for core-collapse supernova explosions. The results show that the upper limit of the 74Se and 74Ge abundance ratio resulting from the ν-process is about 36% of the value in the solar system.
A Scheme of Full Kinetic Particle-in-cell Algorithms for GPU Acceleration Using CUDA Fortran Programming
Authors: Xiong Q. Y. , Huang S. Y. , Yuan Z. G. , Jiang K. , Wei Y. Y. , Xu S. B. , Zhang J. , Wang Z. , Lin R. T. , Yu L.
Published: December 2022

The emerging computable devices, graphical processing units (GPUs), are gradually applied in the simulations of space physics. In this paper, we introduce an approach that implements full kinetic particle-in-cell simulations on GPU architecture devices using the CUDA Fortran language programming for the first time. Using the latest high-performance computing NVIDIA GPUs, this program, which follows the second-order leap-frog iteration method, can speed up the computing process by a factor of 150–285 on a single device compared with the time cost of running with a single core of an Intel Xeon Gold processor. Our scheme improves fast accessibility to the simulation results and provides valuable assistance in studying the physical process.
CORINOS. I. JWST/MIRI Spectroscopy and Imaging of a Class 0 Protostar IRAS 15398–3359
Authors: Yang Yao-Lun , Green Joel D. , Pontoppidan Klaus M. , Bergner Jennifer B. , Cleeves L. Ilsedore , Evans II Neal J. , Garrod Robin T. , Jin Miwha , Kim Chul Hwan , Kim Jaeyeong , Lee Jeong-Eun , Sakai Nami , Shingledecker Christopher N. , Shope Brielle , Tobin John J. , van Dishoeck Ewine F.
Published: December 2022

The origin of complex organic molecules (COMs) in young Class 0 protostars has been one of the major questions in astrochemistry and star formation. While COMs are thought to form on icy dust grains via gas-grain chemistry, observational constraints on their formation pathways have been limited to gas-phase detection. Sensitive mid-infrared spectroscopy with JWST enables unprecedented investigation of COM formation by measuring their ice absorption features. Mid-infrared emission from disks and outflows provide complementary constraints on the protostellar systems. We present an overview of JWST/Mid-Infrared Instrument (MIRI) Medium Resolution Spectroscopy (MRS) and imaging of a young Class 0 protostar, IRAS 15398−3359, and identify several major solid-state absorption features in the 4.9–28 μm wavelength range. These can be attributed to common ice species, such as H2O, CH3OH, NH3, and CH4, and may have contributions from more complex organic species, such as C2H5OH and CH3CHO. In addition to ice features, the MRS spectra show many weaker emission lines at 6–8 μm, which are due to warm CO gas and water vapor, possibly from a young embedded disk previously unseen. Finally, we detect emission lines from [Fe ii], [Ne ii], [S i], and H2, tracing a bipolar jet and outflow cavities. MIRI imaging serendipitously covers the southwestern (blueshifted) outflow lobe of IRAS 15398−3359, showing four shell-like structures similar to the outflows traced by molecular emission at submillimeter wavelengths. This overview analysis highlights the vast potential of JWST/MIRI observations and previews scientific discoveries in the coming years.
If Dark Matter is Fuzzy, the First Stars Form in Massive Pancakes
Authors: Kulkarni Mihir , Visbal Eli , Bryan Greg L. , Li Xinyu
Published: December 2022

Fuzzy dark matter (FDM) is a proposed modification for the standard cold dark matter (CDM) model motivated by small-scale discrepancies in low-mass galaxies. Composed of ultralight (mass ∼ 1022 eV) axions with kiloparsec-scale de Broglie wavelengths, this is one of a class of candidates that predicts that the first collapsed objects form in relatively massive dark matter halos. This implies that the formation history of the first stars and galaxies would be very different, potentially placing strong constraints on such models. Here we numerically simulate the formation of the first stars in an FDM cosmology, following the collapse in a representative volume all the way down to primordial protostar formation including a primordial nonequilibrium chemical network and cooling for the first time. We find two novel results: first, the large-scale collapse results in a very thin and flat gas “pancake”; second, despite the very different cosmology, this pancake fragments until it forms protostellar objects indistinguishable from those in CDM. Combined, these results indicate that the first generation of stars in this model are also likely to be massive and, because of the sheet morphology, do not self-regulate, resulting in a massive Population III starburst. We estimate the total number of first stars forming in this extended structure to be 104 over 20 Myr using a simple model to account for the ionizing feedback from the stars, and should be observable with the James Webb Space Telescope. These predictions provide a potential smoking gun signature of FDM and similar dark matter candidates.
Estimating Aerodynamic Properties of Planetary Surfaces using Drone Attitude
Authors: Jackson Brian
Published: December 2022

Measuring the wind profile near a planet’s surface provides a way to estimate friction velocity and the surface’s aerodynamic roughness length, parameters key for understanding and predicting aeolian activity. In this study, we demonstrate the feasibility of measuring the wind profile using only the attitude of a small drone. Such an approach may be particularly advantageous in planetary exploration where instrument payload, data volume, and power are all limited. Indeed, estimates of Martian winds and the wind profile are likely already feasible with telemetry from Mars 2020 Ingenuity. Given the enormous influence of wind in energy and sediment redistribution on Mars, such measurements are critical to understanding aeolian processes and to constraining parameters used in geologic and climate models (such as dust lofting rates). Future work should explore how to expand on and improve the measurement approach discussed here and whether the already collected telemetry from Ingenuity might be used.
Investigation of algorithms for suppressing xenon oscillations in a VVER-1200 reactor
Authors: Soloviev Denis A. , Khachatryan Artsrun G. , Chernov Yevgeny V. , Al Malkawi Rashdan T.
Published: December 2022

This paper presents the results of numerical studies of various algorithms for suppression of xenon offset and power distribution oscillations in the core of a VVER-1200 reactor. The purpose of the research is to select an algorithm that minimizes the amount of liquid radioactive wastes during water exchange in the primary circuit of a nuclear power plant. For this, several algorithms for xenon oscillations suppression were considered. The first algorithm considered was an algorithm for suppression of xenon oscillations, which uses regulation due to AWP only, without utilization of any additional regulation.

The second algorithm considered was an algorithm based on the use both AWP and boron regulation. In this algorithm suppression of xenon oscillations was carried out with the help of accelerated initiation of the work of the AWP by changing the boric acid concentration with constant second circuit pressure of the NPP and by utilization of the second control rods group.

Last algorithm considered was algorithm based on the use of temperature control for accelerated initiation of the work of the AWP. In this algorithm, xenon oscillations suppression was carried out by changing coolant temperature at the reactor inlet caused by pressure change in the secondary circuit in the normal operation margins, and by involving the second group of control rods.

It was shown that the best way to suppress xenon offset and power distribution oscillations in terms of minimization of radioactive liquid wastes amount is the algorithm with accelerated initiation of the AWP due to temperature regulation, with elimination of temperature regulation after minimizing of current axial offset value deviation from the nominal one.
Persistent Inflammation Initiated by TORCH Infections and Dysbiotic Microbiome in Autism Spectrum Disorders: A Prospect for Future Interventions
Authors: Alibek Kenneth , Niyazmetova Luiza , Farmer Sean , Isakov Terence
Published: December 2022

Autism spectrum disorders (ASD) are a range of neurodevelopmental conditions that are clinically present early in childhood with the symptoms of social withdrawal and repetitive behavior. Despite an extensive research on ASD, no commonly accepted theory on the disease etiology exists. Hence, we reviewed several scientific publications, including reviews, preclinical and clinical investigations, and published hypotheses to analyze various opinions on the nature and cause of the disorder. Many studies suggest that infections and inflammation during pregnancy play a significant role in genetic and epigenetic changes in the developing fetus, resulting in an autistic phenotype in a child. Still, there is a lack of comprehensive literature about the multitude of autism inducing factors. Therefore, this article reviews and discusses available scientific evidence on the roles of viral, bacterial, fungal, and parasitic infections, overactivation of the immune system, and intestinal microflora in the pathogenesis and clinical manifestation of ASD. The overview of the scientific publications, including our own studies, suggests that TORCH infections, imbalanced microbiome, and persistent inflammation are significantly associated with the disruption of the social domain in ASD children. The ASD-related changes begin prenatally as maternal-to-fetal immune activation triggered by infection. It results in continuous low-grade inflammation and oxidative stress in a fetus, causing germline and somatic genetic changes in the developing brain and the establishment of the dysregulated immune system. These changes and dysregulations result in central and peripheral nervous systems dysfunctions as well as other comorbid conditions found in autistic children.
Recherches de provenance Gurlitt : vue d’ensemble, méthodes et résultats
Authors: Baresel-Brand Andrea , Ivanoff Hélène
Published: December 2022

Le projet « Provenienzrecherche Gurlitt » (« Projet de recherche sur les provenances du fonds artistique Gurlitt ») a été établi en 2016 dans le prolongement du projet de la Task Force « Schwabinger Kunstfund » et s’est déroulé jusqu’au 31 décembre 2017. Il a recherché les origines (provenances) des œuvres d’art qui avaient été trouvées dans les différentes résidences de Cornelius Gurlitt depuis 2012. L’objectif de la recherche sur la provenance était de clarifier le statut de propriété historique des œuvres d’art suspectes afin d’établir si certaines d’entre elles étaient des biens confisqués par les nazis et, le cas échéant, à qui elles avaient été prises. Un grand nombre de documents écrits provenant du legs Gurlitt ont également été répertoriés dans un inventaire et rendus accessibles. Les travaux de recherche ont été menés sur la base de l’accord signé par le gouvernement fédéral, l’État libre de Bavière et la Fondation Kunstmuseum Bern en 2014. Fin 2017, 1 566 œuvres d’art et ensembles d’œuvres du « Kunstfund Gurlitt » avaient été traités par la Task Force et le projet. Si l’on considère le legs dans son ensemble, il apparaît clairement qu’il ne s’agit pas tant d’une collection d’œuvres d’art de grande valeur valant des milliards, comme on l’avait supposé au départ, mais plutôt d’un mélange d’héritages familiaux et de stocks marchands. Le fonds artistique contient certes des pièces exceptionnelles de très grande qualité, mais la majeure partie est constituée d’œuvres sur papier, dont un grand nombre d’œuvres graphiques en série. Une grande partie de ces œuvres fait partie de l’ensemble « Entartete Kunst » (art dégénéré). Pendant la période nazie, Hildebrand Gurlitt, en tant que marchand accrédité par le régime, pouvait acquérir ou échanger ces œuvres de façon privilégiée et à bas prix par l’intermédiaire du ministère du Reich pour l’éducation du peuple et la propagande. Son intérêt s’est toujours porté vers les œuvres de l’art moderne contemporain, dont il avait déjà été le promoteur depuis les années 1920. Certes, il vendait aussi des œuvres de cet ensemble, mais il s’agit ici d’une collection conçue par un connaisseur. En ce qui concerne la détermination de la provenance, une classification finale des œuvres d’art a été effectuée selon les critères de l’accord. Cela a été fait après l’achèvement de la procédure d’évaluation et la fourniture de rapports finaux. Les examens et les diverses tâches de documentation ont été opérées dans le cadre des projets intitulés « Reviews, Dokumentation und anlassbezogene Forschungsarbeiten zum Kunstfund Gurlitt » (2018) et « Publikation und Ergebnisdokumentation zum “Kunstfund Gurlitt” » (2019). Le matériel est désormais disponible via www.proveana.de (inscription requise).
Board gender quotas: can women realistically boost firm performance?
Authors: Casteuble Cécile , Lepetit Laetitia , Ha Tran Thu
Published: December 2022

L’objectif de notre article est d’étudier l'impact des quotas de genre sur la performance des entreprises. Nous considérons pour cela les lois imposant un quota de genre dans certains pays européens comme une expérience quasi naturelle. Notre analyse statistique montre que les caractéristiques des membres du conseil d’administration changent de manière significative après la mise en place de telles mesures. Les résultats de notre analyse empirique mettent en évidence que les quotas de genre réduisent le coût des fonds propres à court terme des entreprises, mais diminuent leur Tobin’s Q à long terme, tout en ayant un impact neutre sur leur rentabilité à court terme et à plus long terme. Notre analyse soutient également l'argument selon lequel les responsables politiques peuvent recourir à un dispositif de quotas pour favoriser la parité au sein des conseils d'administration sans générer d'effets négatifs sur la performance à court terme des entreprises. Cependant, un impact négatif sur leur Tobin’s Q peut être attendu à long terme. Notre analyse suggère finalement que l’influence des femmes dans les conseils d’administration sur la performance des entreprises suscite des attentes irréalistes de meilleure performance de la part des responsables politiques.
Does government stability affect the banking system’s stability?
Authors: Stef Nicolae , Dimelis Sophia
Published: December 2022

Des gouvernements plus stables devraient contribuer à la préservation (amélioration) de la stabilité financière des systèmes bancaires en rendant les décisions publiques futures plus prévisibles. À cet égard, notre étude explore la relation entre la stabilité politique mesurée par la part de vote des partis gouvernementaux et la stabilité du système bancaire. En utilisant un échantillon de 84 pays au cours de la période 2004-2017, l’approche de panel dynamique confirme que ce pouvoir de vote n’est lié de manière significative au risque de défaut bancaire que dans les systèmes présidentiels. Une augmentation de la part de vote des partis gouvernementaux favorise probablement l’application de l’agenda politique du président en réduisant le degré d’incertitude politique. Cela semble renforcer la stabilité bancaire dans les systèmes présidentiels.
Analyse critique des éléments définitoires du phénomène expressif
Authors: Legallois Dominique
Published: December 2022

Cet article aborde la question de l’expressivité en considérant trois modes de production (éthique, mimésique, pathétique). Il remet en question une approche intégralement « émotive » de l’expressivité et met en perspective des exemples dans lesquels la notion d’ expressivité mimésique est en œuvre. Il discute et illustre également l’idée de dé-formation à l’origine de toute unité expressive et s’attarde sur le processus de monstration , présent également dans les énoncés non expressifs.
La chanson comme exemple dans les traités de musique de la Renaissance
Authors: His Isabelle
Published: December 2022

En utilisant des chansons comme exemples des notions qu’ils présentent, les traités de musique nous donnent un reflet de la culture chansonnière de leur temps. Cet article présente deux instructions pour le luth (Le Roy, 1574 et Adriaenssen, 1592) et deux écrits théoriques (Blockland, 1573 et De Caus, 1615) qui expliquent respectivement la mise en tablature et le solfège en puisant dans un intéressant vivier de chansons. Choisis pour des raisons pédagogiques - à la Renaissance comme encore aujourd’hui -, ces chants sont porteurs de mémoire et de culture.
High-Frequency Trading with Machine Learning Algorithms and Limit Order Book Data
Authors: Mangat Manveer Kaur , Reschenhofer Erhard , Stark Thomas , Zwatz Christian
Published: December 2022

In this paper, we examine the usefulness of machine learning methods such as support vector machines, random forests and bagging for the extraction of information from the limit order book that can be used for intraday trading. For our empirical analysis, we first get 50 raw features from the LOBSTER message file and order book file of the iShares Core S & P 500 ETF for the time period from 27.06.2007 to 30.04.2019 and then construct 18 higher-level features (aggregated to 5 minutes frequency) which serve as predictors. Using straightforward specifications for the machine learning procedures and thereby avoiding excessive data snooping, we find that these procedures are unable to find high dimensional patterns in the order book that could be used for trading purposes. The observed significant predictability is mainly due to the inclusion of only one variable, namely the last price change, and is probably too small to ensure profitability once transaction costs are taken into account.