bluuebunny/crossref_metadata_2025 huggingface dataset:
ВПЛИВ СТРЕСУ І ТРАВМАТИЧНИХ ПОДІЙ НА ДИТЯЧИЙ МОЗОК
Authors: SHKREBTIIENKO L. , ROZOVA T.
Published: December 2024

Сьогодні травматичні події стали невід'ємною частиною життя дітей в Україні. Вони спричинені різними факторами, як-от: військовими діями (повітряні тривоги, обстріли, вибухи, інформаційний тиск), зростаючою кількістю сімейних конфліктів і різними соціально-економічними негараздами. Численні дослідження доводять, що травматичні події та стрес значно впливають на розвиток і функціонування мозку в дітей, зумовлюючи когнітивні та емоційні порушення. Діти, які зазнали стресу, мають підвищений ризик розвитку психічних розладів у дорослому віці (депресія, тривожні розлади та посттравматичний стресовий розлад), що може розвинутися після пережитих подій, коли симптомами є повторювані спогади про травму, нічні кошмари, підвищена тривожність і уникання ситуацій, які нагадують про травму. Це впливає на функціонування дитини в повсякденні та навчанні.
Метою статті – детальне дослідження впливу травматичних подій та стресу на дитячий мозок і визначення ефективних методів подолання негативних наслідків.
МИСТЕЦТВО УСПІХУ В «СУСПІЛЬСТВІ ВРАЖЕНЬ»
Authors: YAKOVLEVA O. , SCHERBYNA V.
Published: December 2024

У статті розглянуто проблему відтворення та збереження в умовах «суспільства вражень» феномену успіху як світоглядного налаштування. Виявлено та описано соціально-філософський зміст, культурні витоки, основні етапи формування та соціальне значення концепту успіху в просторі європейської культури. Розкрито, як зміни релігійності впливали на зміст концепту «успіх» у процесі історичних змін суспільства в різні історичні епохи. На основі аналізу специфіки суспільства вражень зроблено висновок: імідж є необхідним чинником для досягнення успіху. Виявлено, що в умовах «суспільства вражень» агенти соціальної взаємодії спираються на власну «логіку вражень», формуючи її в парадигмах соціодраматичних потоків, де культурні уявлення конкретного соціального середовища виконують роль системи координат для вироблення стратегії успіху. На засадах авторської культурологічної концепції запропоновано теоретичну гіпотезу щодо ефективних стратегій формування іміджу для досягнення успіху: традиційного, модерного та комунікативного.
Compatible Split Systems on a Multiset
Authors: Moulton Vincent , Scholz Guillaume
Published: December 2024

A split system on a multiset $\mathcal M$ is a multiset of bipartitions of $\mathcal M$. Such a split system $\mathfrak S$ is compatible if it can be represented by a tree in such a way that the vertices of the tree are labelled by the elements in $\mathcal M$, the removal of each edge in the tree yields a bipartition in $\mathfrak S$ by taking the labels of the two resulting components, and every bipartition in $\mathfrak S$ can be obtained from the tree in this way. Compatibility of split systems is a key concept in phylogenetics, and compatible split systems have applications to, for example, multi-labelled phylogenetic trees. In this contribution, we present a novel characterization for compatible split systems, and for split systems admitting a unique representation by a tree. In addition, we show that a conjecture on compatibility stated in 2008 holds for some large classes of split systems.
An Infinite Family of Connected 1-Factorisations of Complete 3-Uniform Hypergraphs
Authors: Maenhaut Barbara , Mitchell Jeremy , Puskás Anna
Published: December 2024

A connected 1-factorisation is a 1-factorisation of a hypergraph for which the union of each pair of distinct 1-factors is a connected hypergraph. A uniform 1-factorisation is a 1-factorisation of a hypergraph for which the union of each pair of distinct 1-factors is isomorphic to the same subhypergraph, and a uniform-connected 1-factorisation is a uniform 1-factorisation in which that subhypergraph is connected. Chen and Lu [Journal of Algebraic Combinatorics, 46(2) 475--497, 2017] describe a family of 1-factorisations of the complete 3-uniform hypergraph on $q+1$ vertices, where $q\equiv 2\pmod 3$ is a prime power. In this paper, we show that their construction yields a connected 1-factorisation only when $q=2,5,11$ or $q=2^p$ for some odd prime $p$, and a uniform 1-factorisation only for $q=2,5,8$ (each of these is a uniform-connected 1-factorisation).
On Generalised Majority Edge-Colourings of Graphs
Authors: Pękała Paweł , Przybyło Jakub
Published: December 2024

A $\frac{1}{k}$-majority $l$-edge-colouring of a graph $G$ is a colouring of its edges with $l$ colours such that for every colour $i$ and each vertex $v$ of $G$, at most $\frac{1}{k}$'th of the edges incident with $v$ have colour $i$. We conjecture that for every integer $k\geq 2$, each graph with minimum degree $\delta\geq k^2$ is $\frac{1}{k}$-majority $(k+1)$-edge-colourable and observe that such result would be best possible. This was already known to hold for $k=2$. We support the conjecture by proving it with $2k^2$ instead of $k^2$, which confirms the right order of magnitude of the conjectured optimal lower bound for $\delta$. We at the same time improve the previously known bound of order $k^3\log k$, based on a straightforward probabilistic approach. As this technique seems not applicable towards any further improvement, we use a more direct non-random approach. We also strengthen our result, in particular substituting $2k^2$ by $(\frac{7}{4}+o(1))k^2$. Finally, we provide the proof of the conjecture itself for $k\leq 4$ and completely solve an analogous problem for the family of bipartite graphs.
Third-Kind Chebyshev Spectral Collocation Method for Solving Models of Two Interacting Biological Species
Authors: Taema M. A. , H. Youssri Y.
Published: December 2024

This paper develops numerical methods for solving a system of two nonlinear integro-differential equations that arise in biological modeling. A spectral collocation method utilizing third-kind Chebyshev polynomials forms the basis of the solution methodology, which efficiently converts the integro-differential system into a collection of nonlinear algebraic equations. To guarantee precise and effective calculation, these algebraic equations are subsequently numerically solved using Newton’s method. In comparison to current methods, the suggested approach offers notable gains in computational efficiency and precision. The spectral collocation method’s accuracy is confirmed by contrasting the outcomes with those derived from other numerical methods that are published in the literature. To further illustrate the applicability, dependability, and computational efficiency of the suggested approach in resolving complicated biological systems, a number of illustrative instances are provided. The ability of spectral collocation techniques based on third-kind Chebyshev polynomials to solve integro-differential equations in a variety of scientific and engineering applications is highlighted by this work.
Building Resilience: The Role of Community-Based Disaster Preparedness Training in Empowering Lubuk Village, Indonesia
Authors: HM Chotib  , Haesdhona  , Syahwami  , Hamirul
Published: December 2024

Lubuk Village in Bungo Regency, Jambi, Indonesia, faces a range of potential natural hazards, including floods, landslides, and forest fires. Building community resilience is crucial to mitigate the impact of these disasters. This community service initiative focused on empowering residents of Lubuk Village through a comprehensive disaster preparedness training program. A participatory approach was adopted, involving collaboration with village leaders, community members, and local government agencies. The training program consisted of workshops, simulations, and hands-on activities covering hazard identification, risk assessment, early warning systems, evacuation procedures, first aid, and basic search and rescue techniques. The training program enhanced community awareness of disaster risks and strengthened their capacity to respond effectively to emergencies. Participants demonstrated increased knowledge, improved skills, and greater confidence in their ability to protect themselves and their families during disasters. The initiative also fostered community cohesion and strengthened social networks. In conclusion, community-based disaster preparedness training is an effective public administration intervention for empowering communities to face natural hazards. By equipping residents with knowledge and skills, this initiative contributed to building a more resilient Lubuk Village.
Nafasi ya Mazingira Katika Jamii kama Inavyodhihirika Katika Kazi Teule za Fasihi ya Kiswahili
Authors: Muteti Agnes Mueni , Mbuthia Evans Murage
Published: December 2024

Mazingira yanachukua nafasi kubwa katika ukuaji wa kiuchumi nchini, ukuaji wa uhusiano katika kiwango cha kijamii na ukuaji wa hisia katika kiwango cha mtu binafsi. Mimea nayo ni mapambo muhimu yanayoweza kuchangia katika ujumi wa eneo fulani. Muonekano wa sehemu maalum unaweza kutufahamisha iwapo sehemu hiyo inaweza kuzua utulivu au wasiwasi. Kando na maeneo ya umma, mahali anapoishi mtu palivyo panaweza kuchangia kutufahamisha kuhusu nafsi ya mtu huyo. Ukweli huu unadhihirika katika kazi za kifasihi za Kithaka wa Mberia; Bara Jingine (2001), Redio na Mwezi (2005), Msimu wa Tisa (2007) pamoja na Rangi ya Anga (2014) ambazo zitashughulikiwa katika makala hii. Kwa kutumia Nadharia ya Uhalisia, tutadhihirisha jinsi utunzaji na uhifadhi wa mazingira husababisha utulivu na amani katika jamii ilhali tamaa inayopelekea watu kung’ang’ania maeneo yenye mazingira mema kwa lengo la kujinufaisha inavyosababisha vurugu, uharibifu wa ujumi na maangamizi katika jamii
EFFECT OF FLYWHEEL WARM-UP ON LOWER BODY MUSCLE PERFORMANCE IN YOUTH ATHLETES
Authors: Younger Liam , Cochrane Darryl
Published: December 2024

Post-activation performance enhancement (PAPE) is a phenomenon that has been used as a warm-up strategy to enhance subsequent muscular performance. The purpose of this study was to examine the efficacy of a flywheel warm-up to elicit a PAPE effect in eight male youth rugby athletes. Participants completed three warm-up interventions (flywheel, stationary cycle, and no warm-up) across three days, each separated by 24 hours. A 5-minute rest followed each warm-up before assessing posterior chain flexibility, countermovement jump (CMJ), and linear acceleration. The results showed a significant increase (p < .05) in poste- rior chain flexibility and 10 m sprint performance following the flywheel warm- up compared to stationary cycling and no warm-up. However, the interventions had no significant differences in CMJ peak power or jump height (p > .05). The current findings suggest that the flywheel warm-up is effective in improving pos- terior chain flexibility and sprint performance in youth rugby players.
EFFECTS OF STRETCHING ON ADOLESCENT TRACK AND FIELD ATHLETES
Authors: Marinova Tereza , Popova-Dobreva Diana
Published: December 2024

Introduction. Flexibility, or joint range of motion, is often highlighted as a crucial aspect of physical fitness. It is commonly believed that improving flexibility can enhance performance and help lower the risk of injury.Methodology. This study involved a sample of 30 Track and Field athletes who were tested once before the stretching programs were applied (April 2024) and once after (October 2024).Results. The data from descriptive analyses for both tests before and after the application of stretching programs showed slight improvements in the SLJ, VJ, BOMBT, and SSPMBT metrics. The results from the comparative analysis of the VJ, SLJ 30-meter Flying Start, and BOMBTS indicators showed a statistically significant improvement from Test 1 to Test 2.The data from the descriptive analysis: M. Triceps Surae: Test 1 mean of13.27 and Test 2 mean of 16.57 for the right limb; Test 1 mean of 13,2 and Test 2 mean of 17,4 for the left limb; Hamstring: Test 1 mean of 79.47 and Test 2 mean of 86.3, for right limb. Test 1 mean 79.37 and Test 2 mean 85.87 for the left limb; M. Rectus Femoris: Test 1 mean 151.33 and Test 2 mean 153.83 for the right limb. Test 1 mean of 150,9 and Test 2 of 154 for the left limb; M. Erector Spinae: Test 1 mean of 26.77 and Test 2 mean of 28.9.The improvement in the M. Triceps Surae R/L flexibility (The t-value of-2.35/-2.81 at a significance level of α = .05 suggests a statistically significant difference between the two test results, indicating the effectiveness of the applied intervention or training program.Conclusions. The comparative analysis of the Vertical Jump, Standing Long Jump, 30-meter Flying Start, and Backward Overhead Medicine Ball Throw indicators showed a statistically significant improvement from Test 1 to Test 2, indicating a positive effect on the development of speed and strength qualities during the application of the stretching programs. Additionally, Welch’s t-test results highlighted the effectiveness of the intervention program, demonstrating a statistically significant improvement in the flexibility of the M. Triceps Surae R/L between Test 1 and Test 2.
LEVEL OF FLEXIBILITY IN TAEKWONDO ATHLETES 7-9 AND 10-11 YEARS OLD
Authors: Avramov Dimitar
Published: December 2024

Flexibility is one of the key components of success in Taekwondo, and, due to the demands of human anatomy, should be developed appropriately. The aim of this study was to determine the level of flexibility in male and female Taekwondo athletes and to identify any significant difference between the two genders in this physical quality. A total of a hundred and forty-one Taekwondo athletes took part in the research. Thirty-nine males and forty-three females aged 7 to 9 years old and forty-one male and 18 female athletes aged 10 – 11 years old. All of them had at least 2 years of Taekwondo training. The acquired data showed that the female participants in both age groups outperformed males in both tests. The average results were X1 males 7-9 = 12.94 cm and X2 females 7-9 = 6.26 cm and X1 males 10-11 = 14.41 cm and X2 females 10-11 = 6.11 cm on the “Side Split” test. For the “Stand and Reach” test, the average results indicated values of X1 males 7-9 = 1.48 cm, X2 females 7-9 =7.70 cm and X1 males 10-11 = 4.6 cm, and X2 females 10-11 = 8.5 cm. The differences were statistically significant for the 7-9 years old group, with Cohen’s d = 1.01 and P(t)= 99.94 on the “Stand and Reach” test, Cohen’s d = .74 and P(t)= 99.99 on the “Side split” test. The 10 – 11 years old group also showed a significant difference with Cohen’s d = 0.71, P(t)= 98.89 on the “Stand and Reach” test, and Cohen’s d = 0.91 and P(t)=99.89 on the “Side Split” test. These results could serve as a starting point for creating an evaluation system for flexibility in Taekwondo athletes.
RISK-BEHAVIOR OF GERMAN BASKETBALL COACHES: COMPARING THE WILLINGNESS TO TAKE RISKS ON DIFFERENT COACHING LICENSE LEVELS WITH THE GENERAL POPULATION AND DIFFERENT PROFESSIONAL SUBGROUPS
Authors: Wunder Johannes , Priem Maximilian , Wagner Gert , Stoll Oliver
Published: December 2024

This research examines the risk behavior of German basketball coaches to understand how risk propensity varies across coaching license levels. Addressing gaps in previous studies on coaches’ psychological traits, the study compares basketball coaches with teachers, managers, and the general population. Data from 360 coaches and the German Socio-Economic Panel (SOEP) were analyzed. Results show that A-license coaches exhibit higher risk-taking, similar to managers, while C-license coaches align more with teachers and the general population. These findings reveal a link between risk preferences and coaching license level, emphasizing the value of large-scale surveys in exploring professional personality traits and the need for further research across sports.
CHARACTERISTICS OF MOTIVATION AND ITS RELATIONSHIP TO RESILIENCE IN KAZAKHSTANI PARALYMPIC ATHLETES
Authors: Krasmik Yuliya , Iancheva Tatiana , Rahmalin Bolat
Published: December 2024

Paralympic sport enables people with disabilities to significantly develop their functional abilities, improving their opportunities for full personal development and social integration. One of the main challenges for athletes is maintaining their internal motivation for sport and withstanding the stress and difficulties throughout the preparation and competition period. The relationship between resilience and motivation in the context of Paralympic sports is paramount for this group of athletes.The aim of this study was to examine the characteristics of motivation and its relationship with resilience in Paralympic athletes. The study was conducted on the grounds of the Federation of Paralympic Sports of Kokchetav, Shymkent, Taraz. Sixty Paralympic athletes participated in the study. The methodology of the study included: 1) Methodology to study the motives for sports activity of V.I.2) Motives for Sports Activity (MSA) questionnaire by E. I. Tropnikov. А. E. Kalinin’s Motives for Motivation Test; S. Maddy, adaptation of D. А. Leontiev and E. I. Raskazova.The results revealed the motivation and resilience of Paralympic athletes, depending on gender and level of sports qualification. It was found that control and the integral indicator of resilience act as key constructs within the motivational system of Paralympic athletes.
INTERTEXTUALITY IN THE NOVELS OF ORHAN PAMUK
Authors: Pham Tuan Anh
Published: December 2024

This study focuses on interpreting intertextuality in the novels by Orhan Pamuk in terms of dialogue with Turkish historical, cultural, and social discourse, focusing on mechanisms of intertextual citation and the integration and mixing of genres. Research results show that his novels address many issues in the social life of Turkey, a country with extremely important geopolitics, acting as a bridge for Eastern and Western cultural interference and dialogue. Recreating a chaotic hyperreality, Pamuk reveals his sense of humanity in modern life. The mechanisms of intertextual citation and integration and mixing of genres are fully utilized by Pamuk to expand the dimension of reality, increase openness, and continuously generate meaning for the text. Based on the analysis of intertextuality in Pamuk’s novels, this study provides both theoretical and practical insights that open up a framework for reference regarding the current state of literary research and creation in Vietnam.
LIGNOCELLULOSIC WASTE OF FURFURAL PRODUCTION FROM BAGASSE AS NON-FOOD FILLER AND SUBSTITUTE FOR UF RESIN IN PLYWOOD MANUFACTURE
Authors: JAMALIRAD LOYA , NAROUIE SAEED
Published: December 2024

The effect of lignocellulosic waste from furfural production of bagasse (LWFPB) as non-food filler for urea-formaldehyde resin (UF) and also substitute a part of UF resin in plywood manufacture was evaluated. LWFPB was used at four levels of 0, 10, 20 and 30% as filler and was replaced with UF resin at three levels of 0, 10 and 20%. Then the physical and mechanical properties of the plywood samples were measured. Results showed that the mechanical and physical properties of plywood were increased compared to the control (with wheat flour filler) when UF resin was used with LWFPB filler. Higher shear strength, MOR and MOE were associated with the use of 30% LWFPB. Besides that, the addition of LWFPB instead of UF resin reduced the mechanical and physical properties of plywood to some extent, but compared to control sample, the best results were obtained with the addition of 10% LWFPB.
Review of Cooling Techniques for Improving Solar Photovoltaic Panel Efficiency
Authors: Fahad M Aljuwaysir Salah , Osman Kahar , Abidin Ummikalsom , Ahmad Muhammad Sajjad , Housein Ismaeil Esam Mohamed , Farooq Muhammad Umer
Published: December 2024

The increasing demand for renewable energy sources, particularly solar photovoltaic (PV) systems, aims to meet global energy needs while addressing environmental concerns. However, the efficiency of PV cells decreases drastically with increasing temperatures. This paper discusses different cooling methods to lessen the effects of temperature on the effectiveness of solar cells. It provides an overview of passive cooling strategies, including radiative cooling, natural convection, phase change materials, and reflective coatings, alongside active approaches such as water cooling, air cooling, and thermoelectric cooling. The integration of these techniques and their impact on solar panel efficiency are discussed, highlighting their potential to enhance performance. Furthermore, the paper discusses the challenges and limitations of existing cooling techniques and underlines future research directions utilizing newly developed materials and computationally advanced models. Policy considerations are also addressed to encourage the adoption of efficient cooling methods. This review aims to enhance solar PV systems' overall efficiency and reliability, moving a step towards a clean energy future.
A Comprehensive Analysis of Spitzer 4.5 μm Phase Curves of Hot Jupiters
Authors: Dang Lisa , Bell Taylor J. , Shu Ying (Zoe) , Cowan Nicolas B. , Bean Jacob L. , Deming Drake , Kempton Eliza M.-R. , Mansfield Megan Weiner , Rauscher Emily , Parmentier Vivien , Rochon Alexandra , Stevenson Kevin B. , Swain Mark , Kreidberg Laura , Kataria Tiffany , Désert Jean-Michel , Zellem Robert , Fortney Jonathan J. , Lewis Nikole K. , Line Michael , Morley Caroline , Showman Adam
Published: December 2024

Although exoplanetary science was not initially projected to be a substantial part of the Spitzer mission, its exoplanet observations set the stage for current and future surveys with JWST and Ariel. We present a comprehensive reduction and analysis of Spitzer’s 4.5 μm phase curves of 29 hot Jupiters on low-eccentricity orbits. The analysis, performed with the Spitzer Phase Curve Analysis pipeline, confirms that BLISS mapping is the best detrending scheme of the three independent schemes we tested for most, but not all, observations. Visual inspection remains necessary to ensure consistency across detrending methods due to the diversity of phase-curve data and systematics. Regardless of the model selection scheme, whether using the lowest BIC or a uniform detrending approach, we observe the same trends, or lack thereof. We explore phase-curve trends as a function of irradiation temperature, orbital period, planetary radius, mass, and stellar effective temperature. We discuss the trends that are robustly detected and provide potential explanations for those that are not observed. While it is almost tautological that planets receiving greater instellation are hotter, we are still far from confirming dynamical theories of heat transport in hot Jupiter atmospheres due to the sample’s diversity. Even among planets with similar temperatures, other factors like rotation and metallicity vary significantly. Larger, curated sample sizes and higher-fidelity phase-curve measurements from JWST and Ariel are needed to firmly establish the parameters governing day–night heat transport on synchronously rotating planets.
Astrometric Calibration of MagAO-X with Updated Solutions for HD 165054 Field Stars
Authors: Long Joseph D. , Pearce Logan , Haffert Sebastiaan Y. , Males Jared R. , Close Laird M. , Guyon Olivier , Foster Warren B. , Van Gorkom Kyle , Hedglen Alexander D. , Kautz Maggie Y. , Kueny Jay K. , Li Jialin , Lumbres Jennifer , McEwen Eden A. , McLeod Avalon L. , Schatz Lauren
Published: December 2024

MagAO-X is a recently commissioned extreme adaptive optics instrument for the Magellan Clay 6.5 m telescope at Las Campanas Observatory in Chile. MagAO-X had first light in 2019 and subsequent commissioning observations in 2022 and 2023. An essential step for the commissioning of any new instrument is the calibration of the conversion of detector coordinates to angular sky coordinates, which we accomplish with observations of HD 165054. The background stars adjacent to HD 165054 in Baade’s Window are in a fortuitous configuration for the astrometric calibration of natural-guide-star high-contrast imaging instruments. We extend past work to connect these stars’ positions to absolute astrometry for HD 165054 itself using Gaia Data Release 3 data, and bootstrap the creation of an astrometric solution for our new high-contrast imaging instrument. Through Markov Chain Monte Carlo analysis of the historical data and position measurements from MagAO-X, we obtain updated astrometric parameters for the seven background stars and an astrometric calibration of the MagAO-X science cameras.
First Resolution of Microlensed Images of a Binary-lens Event
Authors: Wu Zexuan , Dong Subo , Mérand A. , Kochanek Christopher S. , Mróz Przemek , Shangguan Jinyi , Christie Grant , Tan Thiam-Guan , Bensby Thomas , Bland-Hawthorn Joss , Buder Sven , Eisenhauer Frank , Gould Andrew P. , Kos Janez , Natusch Tim , Sharma Sanjib , Udalski Andrzej , Woillez J. , Buckley David A. H. , Thompson I. B. , El Dayem Karim Abd , Berdeu Anthony , Berger Jean-Philippe , Bourdarot Guillaume , Brandner Wolfgang , Davies Richard I. , Defrère Denis , Dougados Catherine , Drescher Antonia , Eckart Andreas , Fabricius Maximilian , Feuchtgruber Helmut , Förster Schreiber Natascha M. , Garcia Paulo , Genzel Reinhard , Gillessen Stefan , Heißel Gernot , Hönig Sebastian , Houlle Mathis , Kervella Pierre , Kreidberg Laura , Lacour Sylvestre , Lai Olivier , Laugier Romain , Le Bouquin Jean-Baptiste , Leftley James , Lopez Bruno , Lutz Dieter , Mang Felix , Millour Florentin , Montargès Miguel , Nowacki Hugo , Nowak Mathias , Ott Thomas , Paumard Thibaut , Perraut Karine , Perrin Guy , Petrov Romain , Petrucci Pierre-Olivier , Pourre Nicolas , Rabien Sebastian , Ribeiro Diogo C. , Robbe-Dubois Sylvie , Sadun Bordoni Matteo , Santos Daryl , Sauter Jonas , Scigliuto Jules , Shimizu Taro T. , Straubmeier Christian , Sturm Eckhard , Subroweit Matthias , Sykes Calvin , Tacconi Linda , Vincent Frédéric , Widmann Felix ,   the GRAVITY+ collaboration
Published: December 2024

We resolve the multiple images of the binary-lens microlensing event ASASSN-22av using the GRAVITY instrument of the Very Large Telescope Interferometer (VLTI). The light curves show weak binary-lens perturbations, complicating the analysis, but the joint modeling with the VLTI data breaks several degeneracies, arriving at a strongly favored solution. Thanks to precise measurements of the angular Einstein radius θ
E = 0.724 ± 0.002 mas and microlens parallax, we determine that the lens system consists of two M dwarfs with masses of M
1 = 0.258 ± 0.008 M
⊙ and M
2 = 0.130 ± 0.007 M
⊙, a projected separation of r
⊥ = 6.83 ± 0.31 au, and a distance of D
L = 2.29 ± 0.08 kpc. The successful VLTI observations of ASASSN-22av open up a new path for studying intermediate-separation (i.e., a few astronomical units) stellar-mass binaries, including those containing dark compact objects such as neutron stars and stellar-mass black holes.
NIHAO-RiNG: A Comparison of Simulated Disk Galaxies from GASOLINE and GIZMO
Authors: Chen 陈 Hou-Zun 厚尊 , Kang 康 Xi 熙 , Macciò Andrea V. , Buck Tobias , Cen Renyue
Published: December 2024

We utilize the publicly available code GIZMO to re-simulate 12 galaxies selected from the Numerical Investigation of a Hundred Astronomical Object (NIHAO) simulation suite, which were run with the GASOLINE code, then compare their properties. We find that while both codes with the same initial conditions and large-scale environments can successfully produce similar galactic disks in Milky Way-mass systems, yet significant differences are still seen in many aspects, particularly the circumgalactic medium (CGM) environment they reside in. Specifically, the thermal feedback recipe used in GASOLINE results in ubiquitous, long-term, large-scale outflows, primarily driven by high-density hot interstellar medium from the galaxy center, preventing the intergalactic medium from falling efficiently. Recycled gas and inflows in the CGM appear at 104∼5 K, playing a crucial role in the formation of cold disks in the NIHAO simulations. In contrast, disk galaxies simulated by GIZMO do not exhibit prominent outflows at low redshifts, but instead display quasi-virialized hot gas halos that arise from the interaction between inflows and feedback-driven outflows. Therefore, the origins of mass and angular momentum of the cold disk in the two simulations are quite different, even though the final morphologies of the corresponding galaxies are both disky. The differences in the distribution of CGM gas are mainly due to different feedback models implemented in the two codes. Future observations of CGM could provide valuable insight into the physics governing the baryon cycle in galaxies.
Fast Radio Bursts and Interstellar Objects
Authors: Pham Dang , Hopkins Matthew J. , Lintott Chris , Bannister Michele T. , Rein Hanno
Published: December 2024

Fast radio bursts (FRBs) are transient radio events with millisecond-scale durations and debated origins. Collisions between planetesimals and neutron stars (NSs) have been proposed as a mechanism to produce FRBs; the planetesimal strength, size, and density determine the time duration and energy of the resulting event. One source of planetesimals is the population of interstellar objects (ISOs), free-floating objects expected to be extremely abundant in galaxies across the Universe as products of planetary formation. We explore using the ISO population as a reservoir of planetesimals for FRB production, finding that the expected ISO–NS collision rate is comparable with the observed FRB event rate. Using a model linking the properties of planetesimals and the FRBs they produce, we further show that observed FRB durations are consistent with the sizes of known ISOs, and the FRB energy distribution is consistent with the observed size distributions of solar system planetesimal populations. Finally, we argue that the rate of ISO–NS collisions must increase with cosmic time, matching the observed evolution of the FRB rate. Thus, ISO–NS collisions are a feasible mechanism for producing FRBs.
Be Careful in Multimessenger Inference of the Hubble Constant: A Path Forward for Robust Inference
Authors: Müller Michael , Mukherjee Suvodip , Ryan Geoffrey
Published: December 2024

Multimessenger observations of coalescing binary neutron stars (BNSs) using gravitational-wave (GW) and electromagnetic- (EM) wave signals are a direct probe of the expansion history of the Universe and carry the potential to shed light on the disparity between low- and high-redshift measurements of the Hubble constant H
0. To measure the value of H
0 with such observations requires pristine inference of the luminosity distance and the true source redshift with minimal impact from systematics. In this analysis, we carry out joint inference on mock GW signals and their EM afterglows from BNS coalescences and find that the inclination angle inferred from the afterglow light curve and apparent superluminal motion can be precise but need not be accurate and is subject to a systematic uncertainty that could be as large as 1.5σ. This produces a disparity between the EM and GW inferred inclination angles, which if not carefully treated when combining observations can bias the inferred value of H
0. We also find that already small misalignments of 3°–6° between the inherent system inclinations for the GW and EM emission can bias the inference by

O
(
1
σ
–
2
σ
)

if not taken into account. As multimessenger BNS observations are rare, we must make the most out of a small number of events and harness the increased precision while avoiding a reduced accuracy. We demonstrate how to mitigate these potential sources of bias by jointly inferring the mismatch between the GW- and EM-based inclination angles and H
0.
Gas Dynamics in 3 “Dippers”: EPIC 203850058, EPIC 204638512, and EPIC 205151387 in 2017–2018
Authors: Sitko Michael L. , Russell Ray W. , Assani Korash , Bayyari Ammar , Tyler Dakotah , Lisse Carey M. , Grady Carol A. , Danchi William C.
Published: December 2024

We have examined variability of the three dipper stars—EPIC 203850058, EPIC 204638512, and EPIC 205151387—using the SpeX spectrograph on NASA’s Infrared Telescope facility on two nights in 2018. We combined these data with those previously published from 2017. In EPIC 204638512, the He i line was in absorption, but blueshifted in wavelength on all 4 nights, indicating outflowing gas near the disk surface. In EPIC 203850058, no net emission is seen in 2018, but in 2017 it had an absorption core that was degraded to longer wavelengths, suggesting inflowing gas. In EPIC 205151387 the He i line went from emission in the spectrum with the least extinction by dust (highest flux state), became an inverse P Cygni profile, indicating inflowing gas as the extinction increased, and finally to pure absorption when the extinction was greatest.
Un voyage dans la guerre
Authors: Chesnelong Bénédicte
Published: December 2024

Un voyage dans la guerre L’Internat de Serhiy Jadan raconte l’errance d’un jeune professeur d’ukrainien à travers une ville du Donbass abandonnée à la violence de la guerre, pour y chercher son neveu. Elle devient un voyage initiatique.
Infrapolitique. Texte caché. Coulisses.
Authors: Guellouz Mariem
Published: December 2024

Cet article est une lecture critique des propositions théoriques de James Scott à partir de ses travaux sur les arts de la résistance et sur les pratiques infrapolitiques des individus en position de subordination (Scott 1985, 2009). Il s’agit d’une discussion théorique sur les notions d’ infrapolitique , de coulisses et de texte caché afin de saisir la pertinence de leurs usages dans le cadre des recherches sociolangagières et sociodiscursives sur les pratiques militantes et les processus de lutte quotidienne et/ou organisée.
Le travail de la protestation. Doubler, larder, truffer, greffer.
Authors: Ribard Dinah
Published: December 2024

Cet article propose une contribution méthodologique sur les marges et les coulisses de la protestation à partir de la question des sources de la connaissance sur ces marges et ces coulisses, abordée en tant que question d’histoire : les sources sont en effet ce qui reste des actions menées (il y a longtemps ou il y a peu) avec les mots qu’elles contiennent. Je m’intéresserai à la création de coulisses et de marges, de doubles-fonds et d’envers dans les sources sur des événements, des acteurs ou des activités protestataires passés. L’objectif est de comprendre ce que c’est que participer.
L’action collective depuis ses coulisses : le cas de la campagne contre la double peine
Authors: Mathieu Lilian
Published: December 2024

L’article rend compte de l’étude, conduite par observation participante, des coulisses comme des représentations publiques d’une campagne portée par différentes organisations de mouvement social, menée entre 2001 et 2003 contre la « double peine » ( i.e . l’expulsion des délinquants étrangers à l’issue de leur peine de prison). Les coulisses apparaissent comme le lieu d’un double travail d’unification des revendications d’un collectif composite et de délimitation de la cause défendue. Elles sont également un lieu d’expression des divergences entre organisations aux revendications et stratégies distinctes, qui toutes cependant savent que leur expression publique constituerait un facteur de vulnérabilité. La mise en représentation de ces divergences et le contrôle de l’expression publique du collectif apparaissent comme des éléments tout aussi discrets qu’essentiels de l’action militante.
Florilège d’instantanés et mosaïque d’inspirations. Témoignage d’une clinique de thérapie familiale avec enfants e clinique en ambulatoire
Authors: Matagne Sophie , Paiva Nathalie
Published: December 2024

À partir de vignettes cliniques, les autrices témoignent de leur pratique de thérapie familiale avec enfants. Tout d’abord, elles partagent les concepts qui leur servent de boussole : la mise en mouvement d’une famille selon les différents stades de développement de l’enfant (modèle de Marie Houyoux et Véronique Wenderyckx), la clinique d’Edith Tilmans-Ostyn et d’autres auteurs(rices) qui les guident dans tels ou tels systèmes thérapeutiques. La spécificité de leur travail, en cothérapie comme en solo, permet de passer du monde des enfants à celui des adultes – et inversement – afin d’ouvrir un espace intermédiaire. Chacun s’y déploie, coconstruit de nouvelles interactions, une nouvelle définition du problème et revisite les mythes et rituels. Les autrices terminent par des pistes pour les générations futures. À leur tour, elles tentent de transmettre l’élan de travailler avec les enfants et leur(s) famille(s).
Sortir de l’hôpital psychiatrique pour (re)trouver sa place en famille : difficultés adolescentaires du réaccordement
Authors: Beine Alexandre , Wouters Virginie
Published: December 2024

L’hospitalisation dans une unité pédopsychiatrique pour adolescent s’adresse à des jeunes, porteurs de symptômes, pour lesquels le processus de la crise adolescente est mis à l’arrêt. Cette crise peut être définie comme le temps de séparation du jeune d’avec son milieu familial et nécessite des réaménagements relationnels. Par ses modalités, le séjour hospitalier propose au patient une mise à distance de son milieu familial. Dans ce cadre, la sortie de l’hôpital se révèle comme un moment pivot du séjour et l’adolescent ne peut s’engager dans un processus de réaccordement avec sa famille que si le processus de séparation a été soutenu par ses parents et l’institution.
Income shifting by multinational enterprises as a source of mismeasurement in aggregate statistics
Authors: Fatica Serena , Gregori Wildmer Daniel
Published: December 2024

This paper studies income shifting by European multinational enterprises as a potential source of mismeasurement in aggregate statistics, with a focus on labour productivity. We use firm level data to implement different types of formulary apportionments and to reattribute earnings among entities of multinational groups operating across the European Union (EU). The results suggest that income shifting affects the measurement of the output-per-worker in the corporate sector. Bottom-up approaches grounded in representative microdata can improve its computation.
Anxiety and depression in healthcare workers are associated with work stress and poor work ability
Authors: Magnavita Nicola , Meraglia Igor , Riccò Matteo
Published: December 2024

Background

Symptoms of anxiety and depression are very common among healthcare workers (HCWs) and could impact the quality of care.

Objective

This study aimed to evaluate the prevalence of these disorders in a public health company and their association with work ability and work-related stress.

Methods

A cross-sectional study involved 80 HCWs being treated for mental disorders (MD), 55 HCWs who said they suffered from MD but were not being treated, and 824 healthy colleagues. All workers completed the Work Ability Index (WAI), the Siegrist's Effort/Reward Imbalance questionnaire (ERI), the Goldberg's scales of anxiety and depression (GADS), and the Warr's scale of job satisfaction.

Results

Three-quarters of workers with MD suffered from anxiety and/or depression. Workers who declared at the periodic medical examination in the workplace that they were being treated for MD had significantly lower levels of work ability than those of their colleagues who declared good mental health. They also reported greater work stress (high effort, low rewards, high overcommitment) and lower job satisfaction than their healthy colleagues. Symptomatic but untreated workers reported significantly lower work ability, lower satisfaction, and greater occupational stress than their healthy colleagues. In the entire sample, there were many workers with symptoms of anxiety or depression who did not declare these disorders during the examination. Overall, there were 328 suspected cases of anxiety (34.2%) and 334 cases of depression (34.8%). Anxious workers [OR = 8.11, 95% confidence interval (CI) = 3.74–17.58] and depressed workers (OR = 4.49, 95% CI = 2.22–9.10) had an increased risk of being classified as having “poor work ability”.

Conclusion

The negative association between psychological symptoms and work ability even in undiagnosed/untreated workers demonstrates the usefulness of screening for these symptoms in work environments.
A scoping review of the Trauma Recovery Center model for underserved victims of violent crime
Authors: Dekker Annette M. , Wang Jennifer , Burton Jason , Taira Breena R.
Published: December 2024

Victimization in the United States is common and has long lasting negative impacts for individuals, often disproportionately impacting those of color and from low socioeconomic communities. The Trauma Recovery Center (TRC) model aims to provide comprehensive mental health and wrap-around case management services for underserved victims of crime. Following PRISMA-ScR guidelines, we sought to further our knowledge about the impact of the TRC model. Twelve studies met the inclusion criteria. Studies were based at three sites. Access to treatment ranged from 55.7% to 72.3%; treatment completion rates ranged from 40.4% to 43.0%. Individuals who completed mental health services showed improvement in PTSD, anxiety, and depression symptoms, while experiencing lower rates of injury recidivism. Several studies demonstrated improvement in mental health symptoms and social needs in individuals from underserved communities. Researchers should focus on expanding and diversifying upon current knowledge to better understand the impact of the TRC model.
Multi-Approach Learning with Embedded Sensors Application in Gesture Recognition
Authors: Lamsellak Oussama , Hdid Jalal , Benlghazi Ahmad , Chetouani Abdelaziz , Benali Abdelhamid
Published: December 2024

The increased attention to human daily activities in academic circles has proven highly valuable, serving various specific needs and producing desired outcomes across different fields. Evaluating human activity data opens up numerous possibilities for researchers, facilitating personalized support options such as timely stress interventions, real-time feedback mechanisms, and applications for assisting individuals with disabilities or monitoring mental health. This paper presents a comprehensive approach integrating multiple sensors to recognize human body movements, applicable to real-life scenarios such as classrooms, driving, and kitchen-related activities. Our focus is to enhance the precision of motion classification and improve motion classification rates by merging acceleration and rotation signals and analyzing an enhanced array of features using various high-caliber machine-learning models. This methodology achieves exceptional performance and flexibility, with accuracy rates ranging between 96% and 98%, substantiating activity recognition within diverse contexts. It aims to reduce system recognition errors, improve the classification process, and promote the advanced utilization of artificial intelligence algorithms in signal processing and in controlling and enhancing bionic hands.
Enhancing Learning Motivation through a Blended Learning Model: Integrating Mobile Devices and Virtual Reality
Authors: Lu Haixia , Ma Lihua , Luo Junna
Published: December 2024

With the rapid development of information technology (IT), the application of mobile devices and virtual reality (VR) in education has become increasingly widespread, giving rise to a blended learning model that integrates these two technologies. This model, through the immersive experience provided by virtual environments and the convenience of mobile devices, effectively expands the temporal and spatial dimensions of traditional learning, offering new potential for enhancing students’ learning motivation. However, existing research has predominantly focused on either mobile learning or VR in isolation, with relatively limited exploration of how the combination of these technologies within a blended learning model impacts learning motivation. Moreover, most of the current methods are constrained to simple questionnaire surveys, lacking in-depth analysis of students’ interactive behaviours and the underlying mechanisms that contribute to motivation formation. In this study, a comprehensive evaluation model was constructed based on an examination of students’ interactions in the blended learning model and its effects on learning motivation. An empirical study was then conducted to provide innovative theoretical and methodological support for educational practice.
Adaptive Recommendation of Teaching Content in Higher Education Using Mobile Interaction Technology
Authors: Li Qiaolan
Published: December 2024

With the rapid advancement of mobile interaction technology, teaching methodologies in higher education are increasingly moving toward personalization and intelligence. The use of mobile interaction technology for adaptive recommendation of teaching content has become a critical topic for enhancing educational effectiveness. Existing research in content recommendation, primarily based on collaborative filtering algorithms, often relies on single-dimensional data applications and lacks comprehensive consideration of both location information and temporal effects. Consequently, these approaches fall short in addressing the complex requirements of dynamic learning environments. This study proposes a multi-dimensional dynamic adaptive recommendation system for teaching content based on mobile interaction technology to address the limitations of existing methods. The research encompasses location-based collaborative filtering for teaching content, time-effect-based collaborative filtering, and an integrated multi-dimensional dynamic recommendation model that considers both location and temporal factors. This study is expected to provide a more precise and dynamically adaptive solution for personalized teaching in higher education.
La poutre maîtresse dans les rituels oudmourtes
Authors: Sadikov Ranus
Published: December 2024

L’un des éléments les plus significatifs de la construction des habitations, non seulement chez les Oudmourtes, mais aussi chez les autres peuples de la zone forestière russe, est la poutre maîtresse, l’élément qui soutient le plafond. L’importance de la fonction de la poutre maîtresse tient à toute une série de significations symboliques, à l’abondance des interprétations et des rituels qui s’y rattachent, et son rôle est clairement reflété dans la culture orale, notamment dans les devinettes. La poutre maîtresse est l’équivalent symbolique de la maison tout entière, le point d’expansion et d’effondrement de l’espace rituel. Toutes ces significations symboliques, ces interprétations et ces rituels reposent sur les profondes racines des traditions ancestrales de construction domestique, telles qu’elles se sont affirmées dans le territoire en question quand l’architecture en bois s’y est développée. Cet article fait le point des connaissances existantes et introduit de nouveaux matériaux empiriques sur le sujet en se focalisant sur les Oudmourtes.
Ethno-archéologie des bassins versants de la Baltique orientale
Authors: Danto Anatole , Maigrot Yolaine
Published: December 2024

Cet article rend compte d’un terrain réalisé à l’hiver 2022 en Estonie et en Lettonie, dans le cadre de la mission archéologique 2NOR « Néolithisation du nord-ouest de la Russie », soutenue par le ministère de l’Europe et des Affaires étrangères. Ce travail pluridisciplinaire, mêlant approches ethnographiques et archéologiques, visait à mieux contextualiser les sites de fouilles en cours en amont du bassin versant de la Dvina, en Russie (oblast de Smolensk), en réalisant une analyse diachronique à l’échelle régionale des pratiques halieutiques fluviales et palustres. Durant une semaine, plusieurs institutions ont été visitées, et les différentes données collectées ont fait l’objet d’un traitement visant à étayer nos connaissances des systèmes de pêche au barrage, passés comme présents, des bassins versants de la Baltique orientale.