bluuebunny/crossref_metadata_2025_split huggingface dataset:
A JWST Medium-resolution MIRI Spectrum and Models of the Type Ia Supernova 2021aefx at +415 days
Authors: Ashall C. , Hoeflich P. , Baron E. , Shahbandeh M. , DerKacy J. M. , Medler K. , Shappee B. J. , Tucker M. A. , Fereidouni E. , Mera T. , Andrews J. , Baade D. , Bostroem K. A. , Brown P. J. , Burns C. R. , Burrow A. , Cikota A. , de Jaeger T. , Do A. , Dong Y. , Dominguez I. , Fox O. , Galbany L. , Hsiao E. Y. , Krisciunas K. , Khaghani B. , Kumar S. , Lu J. , Maund J. R. , Mazzali P. , Morrell N. , Patat F. , Pfeffer C. , Phillips M. M. , Schmidt J. , Stangl S. , Stevens C. P. , Stritzinger M. D. , Suntzeff N. B. , Telesco C. M. , Wang L. , Yang Y. 
Published: November 2024

Abstract
We present a JWST MIRI medium-resolution spectrometer spectrum (5–27 μm) of the Type Ia supernova (SN Ia) SN 2021aefx at +415 days past B-band maximum. The spectrum, which was obtained during the iron-dominated nebular phase, has been analyzed in combination with previous JWST observations of SN 2021aefx to provide the first JWST time series analysis of an SN Ia. We find that the temporal evolution of the [Co iii] 11.888 μm feature directly traces the decay of 56Co. The spectra, line profiles, and their evolution are analyzed with off-center delayed-detonation models. Best fits were obtained with white dwarf (WD) central densities of ρ

c
= 0.9−1.1 × 109 g cm−3, a WD mass of M
WD = 1.33–1.35 M
⊙, a WD magnetic field of ≈106 G, and an off-center deflagration-to-detonation transition at ≈0.5 M
⊙ seen opposite to the line of sight of the observer (−30°). The inner electron capture core is dominated by energy deposition from γ-rays, whereas a broader region is dominated by positron deposition, placing SN 2021aefx at +415 days in the transitional phase of the evolution to the positron-dominated regime. The formerly “flat-tilted” profile at 9 μm now has a significant contribution from [Ni iv], [Fe ii], and [Fe iii] and less from [Ar iii], which alters the shape of the feature as positrons mostly excite the low-velocity Ar. Overall, the strength of the stable Ni features in the spectrum is dominated by positron transport rather than the Ni mass. Based on multidimensional models, our analysis is consistent with a single-spot, close-to-central ignition with an indication of a preexisting turbulent velocity field and excludes a multiple-spot, off-center ignition.
A Systematic Search of Distant Superclusters with the Subaru Hyper Suprime-Cam Survey
Authors: Chen Tsung-Chi , Lin Yen-Ting , Schive Hsi-Yu , Oguri Masamune , Chen Kai-Feng , Okabe Nobuhiro , Ali Sadman , Bottrell Connor , Dalal Roohi , Koyama Yusei , Monteiro-Oliveira Rogério , Shimakawa Rhythm , Goto Tomotsugu , Hsieh Bau-Ching , Kodama Tadayuki , Nishizawa Atsushi J. 
Published: November 2024

Abstract
Superclusters, encompassing environments across a wide range of overdensities, can be regarded as unique laboratories for studying galaxy evolution. Although numerous supercluster catalogs have been published, none of them goes beyond redshift z = 0.7. In this work, we adopt a physically motivated supercluster definition, requiring that superclusters should eventually collapse even in the presence of dark energy. Applying a friends-of-friends (FoF) algorithm to the CAMIRA cluster sample constructed using the Subaru Hyper Suprime-Cam survey data, we have conducted the first systematic search for superclusters at z = 0.5–1.0 and identified 673 supercluster candidates over an area of 1027 deg2. The FoF algorithm is calibrated by evolving N-body simulations to the far future to ensure high purity. We found that these high-z superclusters are mainly composed of two to four clusters, suggesting the limit of gravitationally bound structures in the younger Universe. In addition, we studied the properties of the clusters and brightest cluster galaxies (BCGs) residing in different large-scale environments. We found that clusters associated with superclusters are typically richer, but no apparent dependence of the BCG properties on large-scale structures is found. We also compared the abundance of observed superclusters with mock superclusters extracted from halo light cones, finding that photometric redshift uncertainty is a limiting factor in the performance of superclusters detection.
Stacking and Analyzing MOSDEF Galaxies by Spectral Types: Implications for Dust Geometry and Galaxy Evolution
Authors: Lorenz Brian , Kriek Mariska , Shapley Alice E. , Sanders Ryan L. , Coil Alison L. , Leja Joel , Mobasher Bahram , Nelson Erica , Price Sedona H. , Reddy Naveen A. , Runco Jordan N. , Suess Katherine A. , Shivaei Irene , Siana Brian , Weisz Daniel R. 
Published: November 2024

Abstract
We examine star formation and dust properties for a sample of 660 galaxies at 1.37 ≤ z ≤ 2.61 in the MOSDEF survey by dividing them into groups with similarly shaped spectral energy distributions (SEDs). For each group, we combine the galaxy photometry into a finely sampled composite SED, and stack their spectra. This method enables the study of more complete galaxy samples, including galaxies with very faint emission lines. We fit these composite SEDs with Prospector to measure the stellar attenuation and SED-based star formation rates (SFRs). We also derive emission-line properties from the spectral stacks, including Balmer decrements, dust-corrected SFRs, and metallicities. We find that stellar attenuation correlates most strongly with mass, while nebular attenuation correlates strongly with both mass and SFR. Furthermore, the excess of nebular compared to stellar attenuation correlates most strongly with SFR. The highest SFR group has 2 mag of excess nebular attenuation. Our results are consistent with a model in which star-forming regions become more dusty as galaxy mass increases. To explain the increasing excess nebular attenuation, we require a progressively larger fraction of star formation to occur in highly obscured regions with increasing SFR. This highly obscured star formation could occur in dusty clumps or central starbursts. Additionally, as each galaxy group represents a different evolutionary stage, we study their locations on the UVJ and SFR-mass diagrams. As mass increases, metallicity and dust attenuation increase, while sSFR decreases. However, the most massive group moves towards the quiescent region of the UVJ diagram, while showing less obscuration, potentially indicating removal of dust.
Forecasts for Helium Reionization Detection with Fast Radio Bursts in the Era of Square Kilometre Array
Authors: Wei Jun-Jie , Gao Chong-Yu 
Published: November 2024

Abstract
The observed dispersion measures (DMs) of fast radio bursts (FRBs) are a good indicator of the amount of ionized material along the propagation paths. In this work, we present a forecast of He ii reionization detection using the DM and redshift measurements of FRBs from the upcoming Square Kilometre Array (SKA). Assuming a model of the Universe in which He ii reionization occurred at a specific redshift

z

re

, we analyze what extent the signal-to-noise ratio (S/N) for the detection of the amplitude of reionization can be achieved in the era of SKA. Using 106 mock FRB data from a 1 year observation of the second phase of SKA, we find that the S/N for detecting He ii reionization can approach the 32–50σ level, and the uncertainty on the reionization redshift can be constrained to be

σ
(

z

re

)
≈
0.022
−
0.031

, depending on the assumed FRB redshift distribution. This is the first quantitative analysis on the detection significance of He ii reionization in the SKA era. We also examine the influence of different fiducial

z

re

values, finding that this effect has a modest impact on the forecasts. Our results demonstrate the potentially remarkable capability of SKA-era FRBs in constraining the epoch of He ii reionization.
Oligocene vertebrate footprints from the Lower Red Formation, Central Iran
Authors: Abbassi Nasrollah , Salehi Tinooni Mohammad , Ghorbani Dehnavi Mahdi , Shakeri Safoora , Eshaghi Ali 
Published: November 2024

The Lower Red Formation (LRF) in Central Iran consists of the alternation of red-brown terrigenous sediments, marls and evaporites with basalt intercalations, exposed under the Chattian-Burdigalian Qom Formation and deposited on Eocene volcaniclastic sediments. The LRF is considered Rupelian in age. In the Deh Nar area, between Qom and Kashan cities, the LRF includes a basal conglomerate, alternations of brown-red sandstone and shale, colored marls with evaporite diapirs and top eroded red sandstone, with dark gray and green basalt lava intercalations. These sedimentary rocks are deposited in fluvial and playa environments, influenced by volcanic activities. Lower sandstone layers of the LRF in Deh Nar contain numerous vertebrate footprints, mostly preserved as convex hyporeliefs. Bird footprints are identified as Ardeipeda egretta, Aviadactyla vialovi, Avipeda phoenix and Gruipeda dominguensis. Small bird footprints are attributed to small, incumbent anisodactyl shoreline birds, such as sandpipers, and the larger of them to Gruiformes and Ciconiiformes, such as Ardeidae and Ciconiidae. Mammal footprints include Dehnaripus incognitusign. nov. and isp. nov., Lophiopus isp., Moropopus elongatus, Moropopus kashanensisisp. nov., Platykopus stuartjohnstoni, and Zanclonychopus isp.
Dehnaripus incognitus is large circular manus and pes imprints; usually, they show unorganized, large, radial surface wrinkles and their digital or metatarsal/ metacarpal imprints are ambiguous. Moropopus kashanensis is tridactyl mammal pes and manus imprints and is distinguished by sharp, claw-like imprints in lateral digits of the manus from Moropopus elongatus. Most probably, the mammal tridactyl footprints of Deh Nar made by three toed, medium- to large sized terrestrial herbivores perissodactyls such as Tapiroidea. Platykopus and Zanclonychopus, however, were remained by large carnivores such as Amphicyonidae or Ursidae. Trackmakers of footprints in the LRF of Deh Nar area lived under hot and dry conditions of terrestrial and evaporitic environments, after cool and dry conditions of the Early Oligocene.
Sobre Tombos Concelhios Medievais e Modernos Portugueses
Authors: Pinto Pedro 
Published: November 2024

A lei de 1431 teve um papel importante na definição de uma matriz do tombo concelhio, aperfeiçoada com a experiência da aplicação do anterior modelo de regimento outorgado pelo corregedor João Mendes a vários concelhos ao longo da década anterior. Mais tarde, apesar de persistirem iniciativas autónomas dos concelhos para fixar e validar cópias da sua documentação num suporte duradouro, o enquadramento régio como autoridade legal sancionadora sobrepôs‑se ao longo da Idade Moderna. Os tombos deixaram de ser só repositórios de documentos e passaram a ser também potenciais veículos de uma memória, uma intencionalidade, uma ideologia e uma narrativa, não só na sua génese mas também em momentos posteriores por via da adição de estratos documentais ou da reorientação das suas funções. Apresentamos um enquadramento cronológico deste processo com base nas informações recolhidas nos tombos que sobreviveram, e disponibilizamos informação relativa às suas características físicas, datação, usos ao longo do tempo e conteúdo.
Tel un paquebot en terre ferme…
Authors: Pierre Michel 
Published: November 2024

L’Exposition coloniale internationale (ECI) de 1931 à Paris marque un tournant dans la représentation de l’Empire colonial français. Le discours colonial se repositionne autour de la « plus grande France » et d’une communauté de civilisation dont l’Exposition doit constituer le rendez-vous symbolique, et le palais des Colonies le point d’orgue architectural. Dirigé par le maréchal Lyautey, le projet d’exposition et de musée mobilise un important réseau d’artistes et d’architectes dont l’influence va perdurer bien au-delà de la fin de l’événement.
Patrimoine et création en contexte postcolonial
Authors: Dramani-Issifou Farah-Clémentine 
Published: November 2024

L’exposition Un.e Air.e de Famille, présentée au musée d’art et d’histoire Paul Éluard de Saint-Denis du 25 juin au 15 novembre 2021 dans le cadre de la Saison Africa2020, proposait un dialogue entre le fonds du musée traversé par l’engagement anticolonial des surréalistes et des œuvres d’artistes africaines ou afro-descendantes contemporaines. Participant d’une volonté de décolonisation du patrimoine, cette exposition sur le fil des représentations de l’histoire a constitué le laboratoire d’une réflexion sur la contribution du commissariat d’exposition à l’écriture critique du monde postcolonial.
Two-dimensional gravity waves at low regularity I: Energy estimates
Authors: Ai Albert , Ifrim Mihaela , Tataru Daniel 
Published: November 2024

This article represents the first installment of a series of papers concerned with low regularity solutions for the water wave equations in two space dimensions. Our focus here is on sharp cubic energy estimates. Precisely, we introduce and develop the techniques to prove a new class of energy estimates, which we call
balanced cubic estimates
. This yields a key improvement over the earlier cubic estimates of Hunter–Ifrim–Tataru (2016), while preserving their scale-invariant character and their position-velocity potential holomorphic coordinate formulation. Even without using any Strichartz estimates, these results allow us to significantly lower the Sobolev regularity threshold for local well-posedness, drastically improving earlier results obtained by Alazard–Burq–Zuily (2014, 2018), Hunter–Ifrim–Tataru (2016) and Ai (2019).
REDES ANDALUZAS DE SEGUIMIENTO DE DAÑOS EN ECOSISTEMAS FORESTALES: DESARROLLO Y APLICACIÓN DE LOS RESULTADOS A LA EVALUACIÓN DEL IMPACTO DE CAMBIO CLIMÁTICO
Authors: Navarro Cerrillo Rafael Mª , Fernández Cancio Ángel , Ruiz Navarro Ángel , Carrasco Gotarredonda Ángel 
Published: November 2024

SUMARIO: 1.- La red de equilibrios biológicos de Andalucía: una red de seguimiento de cambio global 2.- Aplicación de los resultados de la red SEDA al seguimiento de ecosistemas forestales 2.1.- Variación de la defoliación en los bosques de Andaluc´ía 2.2.- Estudio de cambio temporal de agentes bióticos 2.3.- Establecimiento de redes locales de establecimiento de daños 2.4.- Reconstrucción fitoclimática de la RAEB 2.5.- Modelos de cambios de vegetación asociados al Cambio Climaático 3.- El futuro de la red SEDA en un contexto de cambio global Bibliografía 4.- Bibliografía
Meningkatkan Budaya Literasi Siswa Melalui Pojok Baca Berbasis Digital
Authors: Ambarita Rosmita , Kaharuddin Kaharuddin , Batubara Mhd. Iqbal 
Published: November 2024

Era digital merupakan tempat dimana manusia hidup diiringi dengan berkembangnya teknologi digital yang merupakan suatu kemajuan peradaban bagi manusia itu sendiri. Di era digital banyak sekali disrupsi yang terjadi dalam kehidupan masyarakat, salah satunya literasi media yang mengalami perubahan dari bentuk cetak ke bentuk digital, namun derasnya arus informasi dan sumber informasi yang valid menjadi tantangan tersendiri bagi sastra digital, oleh karena itu di dalam rangka menunjang perkembangan motorik, minat membaca, dan upaya memperluas pengetahuan melalui media membaca, PKM ini menggagas program kerja terkait literasi dengan media cetak dan buku buku online melalui “Pojok Baca” berbasis Digital yang berisi berbagai buku dengan informasi referensi terpercaya. Mengembangkan dan meningkatkan literasi menjadi salah satu permasalahan besar bagi pelajar saat ini. Kurangnya minat literasi dan minat membaca khususnya pada siswa disebabkan oleh kurangnya fasilitas di perpustakaan atau penggunaan gadget yang berlebihan. Permasalahan tersebut dikhawatirkan akan semakin banyak anak-anak yang mempunyai minat membaca yang rendah.PKM ini bertujuan untuk meningkatan literasi siswa, dalam hal ini siswa MTs Persiapan Negri Bintang Sembilan Sibabangun, Tapanuli Tengah, Sumatera Utara. Peningkatan literasi tersebut akan dilakukan melalui salah satu program kerja yang dilaksanakan, yaitu yaitu penerapan Pojok Baca berbasis Digital.
Early prediction of placenta accreta spectrum by evaluation of risk factors and ultrasound
Authors: Hu Caihong , Zhang Weishe , Pei Chenlin , Liu Yuelan , Fu Yiran , Peng Qiaozhen , Wang Biaobiao , Li Qi , Huang Jingrui 
Published: November 2024

IntroductionWe explored the predictive utility of clinical risk factors and first-trimester pregnancy ultrasound signs for severe placenta accreta spectrum.Material and methodsPatients with placenta accreta spectrum treated in our institution between March 1, 2017 and December 31, 2022 were analyzed. The patients were divided into those with mild and those with severe conditions. Univariate analysis was used to determine the clinical risk factors and first trimester ultrasound signs associated with severe placenta accreta spectrum. Receiver operating characteristic curves were drawn and the areas under the curves calculated.ResultsUnivariate analysis revealed significant between-group differences between the groups in the number of cesarean sections, scar pregnancy, low gestational sac position, abnormal placental position, focal exophytic mass and abnormal placental lacunae in placental parenchyma (p < 0.05). The number of cesarean sections and first trimester ultrasound signs predicted severe placenta accreta spectrum, with areas under the curves of 0.66 and 0.75. When the number of cesarean sections was combined with low gestational sac position, the placenta position and related ultrasound signs, the areas under the curves for predicting severe placenta accreta spectrum were 0.78, 0.73, and 0.89, respectively.ConclusionsClinical risk factors and first-trimester ultrasound signs predicted severe placental accreta spectrum and their combinations had even greater clinical utility.
Transaksi Bitcoin dalam Perspektif Ekonomi Syariah
Authors: Fitri Riska Julia , Ismail M. Syukri 
Published: November 2024

Cryptocurrency adalah uang digital, yang beredar di dunia maya tidak memiliki wujud fisik, awal kemunculannya tahun 2008 oleh Satoshi Nakamoto, keamanan Crypto dilindungi oleh teknologi blokchain, namun tidak ada lembaga yang bertanggung jawab dan tidak memiliki asset yang mendasar, segala problem yang muncul, menimbulkan pro dan kontra dikalangan pakar ekonomi dan para ulama, crypto belum memenuhi beberapa unsur dan kriteria sebagai mata uang khususnya dalam prinsip Ekonomi Islam, dalam konteks uang digital tidak ada underlying yaitu aset dijadikan sebagai dasar transaksi, uang digital bukan mata uang, ada unsur ketidak jelasan gharar, harga tidak terkendali dan fungsi mata uang digital telah berkembang sekedar alat tukar menjadi komoditas investasi. penelitian ini bertujuan untuk mengetahui bagaimana Transaksi Bitcoin dalam perspektif ekonomi syariah dan pandangan hukum islam terhadap transaksi bitcoin, teori yang digunakan adalah teori transaksi ekonomi dan penelitian ini bersifat studi pustaka (Library Research), Dari penelitian ini dapat disimpulkan bahwa dalam Islam transaksi yang dilakukan harus jelas, wujud, barang, dan maanfaatnya, dan tidak ada pihak yang saling dirugikan, bitcoin haram dan tidak memenuhi syarat sil’ah secara syar’i, selain itu bitcoin juga bertentangan dengan Undang- Undang Nomor 7 Tahun 2011 dan Peraturan Bank Indonesia Nomor 17 Tahun 2015, Di Indonesia alat tukar yang sah hanya satu rupiah.
THE POLITICAL HEARTLAND OF CHAGATAI KHAN IN ZHETYSU
Authors: O. Oshanov 
Published: November 2024

The article examines the history of Zhetysu, during the period when this historical region was part of the Chagatai’s ulus. Special attention is paid to the Kegen-Narynkol district, which was the political center of this Ulus. The historical significance of this region is insufficiently covered in historical research. Kegen-Narynkol district is considered the seasonal political center of Chagatai and his descendants, their summer pastures were located here. It also describes the artificial ponds (reservoirs) preserved to this day in the Kegen-Narynkol steppes, the construction of which is associated with the rulers of the Chagatai Ulus. At the end of the article, the political situation in Kegen-Narynkol during the existence of the Kazakh Khanate under the rule of Yesim and Zhangir, as well as the general history of the Kazakh and Kyrgyz peoples, is investigated. The article uses information from written sources, as well as historical legends, pedigrees preserved by the Kazakhs and Kyrgyz.
В статье рассматривается история Жетысу, в период, когда эта историческая область входила в состав Улуса Чагатаидов. Особое внимание уделяется Кеген-Нарынкольскому региону, который являлся политическим центром этого улуса. Историческое значение этого региона не получило должного освещения в исторических исследованиях. Кеген-Нарынкольский район рассматривается как сезонный политический центр Чагатая и его потомков, здесь находились летние пастбища Чагатаидов. Также дается описание сохранившихся до наших дней в Кеген-Нарынкольских в степях искусственных прудов (водоемов), сооружение которых связывается с правителями Чагатайского улуса. В завершении статьи исследуется политическая ситуация в Кеген-Нарынколе в период Казахского ханства в правление Есима и Жангира, а также общая история казахского и кыргызского народов. В статье использованы сведения письменных источников, а также исторические легенды, родословные, сохранившиеся у казахов и кыргызов.
ОРНАМЕНТИРОВАННЫЕ ФАЛАНГИ ЖИВОТНЫХ НА ПОСЕЛЕНИЯХ БОТАЙСКОЙ КУЛЬТУРЫ: АРХЕОЛОГИЧЕСКИЙ КОНТЕКСТ, ОСОБЕННОСТИ ДЕКОРА И ИНТЕРПРЕТАЦИЯ
Authors: Э.Р. Усманова , С.В. Захаров , И.В. Палагута , В.К. Мерц , А.А. Плешаков 
Published: November 2024

Находки орнаментированных фаланг лошадей и других копытных животных — характерная особенность культур энеолита степей Евразии. Коллекция орнаментированных путовых костей преимущественно лошади (реже — кулана и сайги) из поселений ботайской культуры Ботай и Красный Яр I (Северо-Казахстанская обл., Казахстан) насчитывает 78 изделий. Это самая большая серия орнаментированных фаланг, известная по материалам евразийских древностей. Предположение о том, что они представляют своеобразную разновидность антропоморфной пластики неоднократно высказывалось ранее. Поселение Ботай является уникальным по обилию остеологического материала: 99% — принадлежало лошади. Жизнь «ботайцев» была тесно связана с популяцией лошади лесостепного Приишимья. Фаланга копытного животного, устойчивая в вертикальном положении, по форме напоминает антропоморфную фигурку. Перед нанесением орнамента фаланга обрабатывалась. Планиграфический анализ находок указывает на их повсеместное присутствие в жилом пространстве ботайского поселения. Возможно, они играли роль идолов-оберегов, охранявших жилое пространство и/или в каком-то виде изображали взаимоотношения человека и лошади.
Finds of ornamented phalanx bones of horses and other ungulates are typical for the Eneolithic cultures of Eurasian steppes. The collection of ornamented fetlock bones, mainly of horses (less commonly, of kulan and saiga) from the Botai culture settlements of Botai and Krasny Yar I (North Kazakhstan Oblast, Kazakhstan) includes 78 items. It is the largest series of ornamented phalanges known in the materials of Eurasian antiquities. The assumption that they represent a distinctive type of anthropomorphic figurines, has been repeatedly expressed earlier. The Botai settlement is unique in terms of the abundance of osteological material: 99% belonging to horses. The life of the “Botai people” was closely connected with horse population of the forest-steppe region. The phalanx bone of a hoofed animal, stable in vertical position, resembles by its shape an anthropomorphic figurine. A phalanx was processed before applying decoration. Planographic analysis of the finds indicates their ubiquitous presence in the living space of the Botai settlement. Perhaps, they played the role of idols-charms that protected the living space, and/or in some ways represented the relationship between a man and a horse.