bluuebunny/crossref_metadata_2025_split huggingface dataset:
Studi Karakteristik Spasial Lahan Kecamatan Bluto, Sentra Produksi Cabe Jamu (Piper retrofractum Vahl.), Menggunakan Sistem Informasi Geografis (SIG)
Authors: Rahman Fahmi Arief , Upriyadi Slamet S , Suryawati Sinar , Murtadlo Mesi Khodijah , Khodali Achmad 
Published: March 2024

Produksi tanaman sangat dipengaruhi oleh kondisi lahan dan teknik budidaya. Sistem Informasi Geografis (SIG) dapat digunakan untuk pengelolaan dan pengambilan keputusan berbasis site-specific tentang kesuburan tanah secara presisi. Tujuan dari penelitian ini untuk mengetahui karakteristik lahan terutama sifat kimia tanah di Kecamatan Bluto, wilayah sentra Cabe Jamu di Madura, dengan menggunakan GIS. Penelitian dilakukan di Bluto, Sumenep dari September hingga Desember 2022. Penelitian menggunakan metode fisiografik untuk memperoleh satuan pengamatan tanah (SPT) dengan melakukan tumpang susun peta RBI, peta Kelerengan (hasil pengolahan data Digital Elevation Model (DEM) SRTM) dan peta Geologi. sampel tanah (top soil) dari setiap SPT diambil berdasarkan sistem diagonal. Sampel tanah selanjutnya dianalisis tekstur (Metode Pipet), pH (H2O) dan pH (KCl) (Metode elektrik), kadar C-organik (Metode Walkey-Black), N total (Metode Kjeldahl), P tersedia (Metode Olsen), Kation dapat ditukar (K-dd, Na-dd, Ca-dd, dan Mg-dd) dan KTK (NH4OAc pH 7.0). Data selanjutnya digunakan untuk membuat Peta Karakteristik Lahan menggunakan Metode Interpolasi Inverse Distance Weighting (IDW). Hasil analisis karakteristik lahan secara spasial memberikan gambaran yang utuh sebagai acuan pengelolaan berbasis wilayah. Hasil analisis menunjukkan bahwa tekstur pada umumnya adalah lempung berpasir dan lempung, pH aktual agak alkali, pH potensial netral dan agak alkal, N total tergolong rendah hingga sedang, P-tersedia sangat tinggi, C-organik umumnya tergolong sedang dan tinggi, KTK didominasi kriteria sedang, Ca-dd seluruh wilayah sangat tinggi, Mg-dd sedang dan tinggi, Na-dd sangat rendah dan rendah, dan K-dd didominasi oleh kriteria tinggi.
Respon Beberapa Varietas Jagung (Zea mays L.) terhadap Lahan Salin di Kabupaten Merauke, Provinsi Papua, Indonesia
Authors: Adrianus Adrianus , Sarijan Abdullah , Mekiuw Yosehi , Rizal Abdul , Yusuf Mani 
Published: March 2024

Upaya meningkatkan produksi jagung terkendala dengan adanya alih fungsi lahan pertanian sehingga penggunaan lahan marginal menjadi solusi. Lahan salin merupakan kawasan lahan marginal dapat dimanfaatkan untuk pengembangan tanaman jagung yang belum dimanfaatkan secara optimal. Jagung memiliki daya adaptasi yang berbeda terhadap kondisi lahan yang berbeda. Penelitian ini bertujuan untuk mengkaji beberapa varietas jagung yang tahan terhadap kondisi tanah salin. Penelitian ini dilaksanakan di Greenhouse Fakultas Pertanian Universitas Musamus bulan September hingga Desember 2022. Penelitian menggunakan Rancangan Acak Kelompok dengan 4 varietas jagung (Jawara, Sejoli, Gendis, serta Exsotic) dan diulang 3 kali. Tanah salin yang digunakan adalah tanah dari belakang kampus Universitas Musamus dengan jarak ke pantai sekitar 1 km. Pengujian menunjukkan tanaman memiliki keragaan pertumbuhan yang berbeda antar varietas dimana perbedaan ini lebih mengacu pada sifat genetis sebagaimana ditunjukkan oleh deskripsi tanaman. Varietas Exsotic menghasilkan tanaman tertinggi (148,87 cm), jumlah baris biji tertinggi (12,5 baris), dan bobot 100 butir biji tertinggi (13,5 g). Varietas Sejoli menghasilkan jumlah daun yang lebih banyak (11,69 helai) dan diameter tongkol yang lebih besar (4,6 cm). Varietas Jawara menghasilkan umur berbunga (44,47 hari) dan umur panen (83,45 hari) yang lebih cepat, sedangkan Varietas Gendis menghasilkan tongkol yang lebih panjang (17,9 cm) dibandingkan lainnya. Bila dibandingkan dengan deskripsi varietas, variabel pengamatan pertumbuhan maupun komponen hasil menunjukkan hasil yang lebih rendah. Rendahnya hasil ini diduga terkait adanya cekaman salinitas yang dialami sehingga tidak mampu untuk tumbuh dan memberikan hasil sesuai deskripsi. Keempat varietas yang dicobakan masih mampu untuk tumbuh dan memberikan hasil namun lebih rendah dibandingkan deskripsinya.
Analisis Faktor yang Mempengaruhi Keputusan Konsumen dalam Membeli Produk Pakaian Secara Online di Desa Air Lelangi Kecamatan Ulok Kupai Kabupaten Bengkulu Utara
Authors: Sugiyarti Lian , Sazili Sazili 
Published: March 2024

This study aimed to know the factors affecting consumer decision in buying clothing products online in Air Lelangi Village, Ulok Kupai District, North Bengkulu Regency.This study used descriptive method. The data sources of this study used primary data and secondary data. The data collection techniques of this study used observation, interview, documentation. This study used 3 data analysis techniques, namely data reduction data, data display, and conclusion. The results of the study show that there are some factors affecting consumer decision in buying clothing products online in Air Lelangi Village, Ulok Kupai District, North Bengkulu Regency.There are 3 indicators, namely 1) consumers choose products/services to meet their needs, when consumers make choices of diverse products/services, they do not regardless of the need to choose products, most consumers buy clothing products in online stores/marketplaces by considering the quality and effectiveness of the product. 2) Estimated time regarding the estimate of how long it take for the goods to be delivered to consumers, ranging from 3-7 days for delivery. 3) The need for products is also supported by the ease of choice of payment methods, consumers make choices about the method / method of payment for products to be purchased, consumers tend to use the COD method or pay on the spot.
Sinergi Antara Aparatur Desa Dengan Masyarakat Dalam Pembangunan Berkelanjutan di Desa Bulutellue Kabupaten Sinjai
Authors: Rahman Abdul 
Published: March 2024

Tujuan Penelitian ialah untuk mengungkap sinergi antara aparatur Desa Bulutellue dengan masyarakat dalam melaksanakan pembangunan berkelanjutan. Pembangunan desa secara berkelanjutan merupakan cara untuk meningkatkan kesejahteraan masyarakat dengan memanfaatkan sumber daya alam secara bijaksana dengan tetap memperhatikan aspek kelestariannya. Penelitian ini dilakukan di Desa Bulutellue dengan menggunakan metode penelitian kualitatif. Data dikumpulkan dengan cara observasi dan wawancara. Data tersebut kemudian dianalisis dengan membandingkan antara hasil penelitian maupun teori yang relevan. Hasil penelitian menunjukkan bahwa dalam rangka mewujudkan pembangunan berkelanjutan maka pemerintah desa dan masyarakat saling bekerjasama mulai dari tahap perencanaan, pelaksanaan, dan evaluasi. Pembangunan di Desa Bulutellue dapat terlaksana sesuai dengan perencanaan, meskipun masih terdapat kendala di antaranya mental masyarakat masih berharap pada pemerintah, dan belum bisa bertindak secara mandiri.
Socio-Professional Trajectories of Refugees in France: An Identity Work Perspective
Authors: Taghavi Shiva , Zannad Hédia , Mandalaki Emmanouela 
Published: March 2024

This qualitative study investigates refugees’ socio-professional trajectories in France. Our findings suggest that refugees follow different socio-professional paths shaped by identity work and acculturation mechanisms as they go about integrating in the French context. We identify three socio-professional trajectories: ‘adjusting’, ‘enhancing’, and ‘detaching’. This study contributes, firstly, to research on refugees’ socio-professional adjustment and vocational adaptation, and secondly, to the literature on identity work. It does so by offering novel insights into the processes of repairing, reorienting, and reconstructing cultural and professional identities in the context of refugees’ relocation to host countries, in this case, France.
Searching for Giant Exoplanets around M-dwarf Stars (GEMS) I: Survey Motivation
Authors: Kanodia Shubham , Cañas Caleb I. , Mahadevan Suvrath , Ford Eric B. , Helled Ravit , Anderson Dana E. , Boss Alan , Cochran William D. , Delamer Megan , Han Te , Libby-Roberts Jessica E. , Lin Andrea S. J. , Müller Simon , Robertson Paul , Stefánsson Gumundur , Teske Johanna 
Published: March 2024

Abstract
Recent discoveries of transiting giant exoplanets around M-dwarf stars (GEMS), aided by the all-sky coverage of TESS, are starting to stretch theories of planet formation through the core-accretion scenario. Recent upper limits on their occurrence suggest that they decrease with lower stellar masses, with fewer GEMS around lower-mass stars compared to solar-type. In this paper, we discuss existing GEMS both through confirmed planets, as well as protoplanetary disk observations, and a combination of tests to reconcile these with theoretical predictions. We then introduce the Searching for GEMS survey, where we utilize multidimensional nonparameteric statistics to simulate hypothetical survey scenarios to predict the required sample size of transiting GEMS with mass measurements to robustly compare their bulk-density with canonical hot Jupiters orbiting FGK stars. Our Monte Carlo simulations predict that a robust comparison requires about 40 transiting GEMS (compared to the existing sample of ∼15) with 5σ mass measurements. Furthermore, we discuss the limitations of existing occurrence estimates for GEMS and provide a brief description of our planned systematic search to improve the occurrence rate estimates for GEMS.
In This Day and Age: An Empirical Gyrochronology Relation for Partially and Fully Convective Single Field Stars
Authors: Lu Yuxi(Lucy) , Angus Ruth , Foreman-Mackey Daniel , Hattori Soichiro 
Published: March 2024

Abstract
Gyrochronology, the field of age dating stars using mainly their rotation periods and masses, is ideal for inferring the ages of individual main-sequence stars. However, due to the lack of physical understanding of the complex magnetic fields in stars, gyrochronology relies heavily on empirical calibrations that require consistent and reliable stellar age measurements across a wide range of periods and masses. In this paper, we obtain a sample of consistent ages using the gyro-kinematic age-dating method, a technique to calculate the kinematics ages of stars. Using a Gaussian process model conditioned on ages from this sample (∼1–14 Gyr) and known clusters (0.67–3.8 Gyr), we calibrate the first empirical gyrochronology relation that is capable of inferring ages for single, main-sequence stars between 0.67 and 14 Gyr. Cross-validating and testing results suggest our model can infer cluster and asteroseismic ages with an average uncertainty of just over 1 Gyr, and the inferred ages for wide binaries agree within 0.83 Gyr. With this model, we obtain gyrochronology ages for ∼100,000 stars within 1.5 kpc of the Sun with period measurements from Kepler and Zwicky Transient Facility and 384 unique planet host stars. A simple code is provided to infer gyrochronology ages of stars with temperature and period measurements.
Lyα at Cosmic Dawn with a Simulated Roman Grism Deep Field
Authors: Wold Isak G. B. , Malhotra Sangeeta , Rhoads James E. , Tilvi Vithal , Gabrielpillai Austen 
Published: March 2024

Abstract
The slitless grism on the Nancy Grace Roman Space Telescope will enable deep near-infrared spectroscopy over a wide field of view. We demonstrate Roman's capability to detect Lyα galaxies at z > 7 using a multiple position angle (PA) observational strategy. We simulate Roman grism data using a realistic foreground scene from the COSMOS field. We also input fake Lyα galaxies spanning redshift z = 7.5–10.5 and a line-flux range of interest. We show how a novel data-cube search technique—CUBGRISM—originally developed for the Galaxy Evolution Explorer can be applied to Roman grism data to produce a Lyα flux-limited sample without the need for continuum detections. We investigate the impact of altering the number of independent PAs and exposure time. A deep Roman grism survey with 25 PAs and a total exposure time of 70 hr can achieve Lyα line depths comparable to the deepest z = 7 narrowband surveys (L
Lyα
≳ 1043 erg s−1). Assuming a null result, where the opacity of the intergalactic medium (IGM) remains unchanged from z ∼ 7, this level of sensitivity will detect ∼400 deg−2 Lyα emitters from z = 7.25 to 8.75. A decline from this expected number density is the signature of an increasing neutral hydrogen fraction and the onset of reionization. Our simulations indicate that a deep Roman grism survey has the ability to measure the timing and magnitude of this decline, allowing us to infer the ionization state of the IGM and helping us to distinguish between models of reionization.
BST1047+1156: A (Failing) Ultradiffuse Tidal Dwarf in the Leo I Group
Authors: Mihos J. Christopher , Durrell Patrick R. , Watkins Aaron E. , McGaugh Stacy S. , Feldmeier John 
Published: March 2024

Abstract
We use deep Hubble Space Telescope imaging to study the resolved stellar populations in BST1047+1156, a gas-rich, ultradiffuse dwarf galaxy found in the intragroup environment of the Leo I galaxy group. While our imaging reaches approximately two magnitudes below the tip of the red giant branch at the Leo I distance of 11 Mpc, we find no evidence for an old red giant sequence that would signal an extended star formation history for the object. Instead, we clearly detect the red and blue helium-burning sequences of its stellar populations, as well as the fainter blue main sequence, all indicative of a recent burst of star formation having taken place over the past 50–250 Myr. Comparing to isochrones for young metal-poor stellar populations, we infer this post-starburst population to be moderately metal-poor, with metallicity [M/H] in the range −1 to −1.5. The combination of a young, moderately metal-poor post starburst population and no old stars motivates a scenario in which BST1047 was recently formed during a weak burst of star formation in gas that was tidally stripped from the outskirts of the neighboring massive spiral M96. BST1047's extremely diffuse nature, lack of ongoing star formation, and disturbed H i morphology all argue that it is a transitory object, a “failing tidal dwarf” in the process of being disrupted by interactions within the Leo I group. Finally, in the environment surrounding BST1047, our imaging also reveals the old, metal-poor ([M/H] = − 1.3 ± 0.2) stellar halo of M96 at a projected radius of 50 kpc.
Second Harmonic Electromagnetic Wave Emissions from a Turbulent Plasma with Random Density Fluctuations
Authors: Krafft C. , Volokitin A. S. 
Published: March 2024

Abstract
In the solar wind, electromagnetic waves at the harmonic plasma frequency 2ω

p
can be generated as a result of coalescence between forward- and backward-propagating Langmuir waves. A new approach to calculate their radiation efficiency in plasmas with external background density fluctuations is developed. The evolution of Langmuir wave turbulence is studied by solving numerically the Zakharov equations in a two-dimensional randomly inhomogeneous plasma. Then, the dynamics of the nonlinear electric currents modulated at frequencies close to 2ω

p
are calculated, as well as their radiation into harmonic electromagnetic waves. In the frame of this non-self-consistent approach where all transformations of Langmuir waves on density inhomogeneities are taken into account, the electromagnetic wave radiation rate (emissivity) is determined numerically as well as analytically, providing in both cases similar results. Moreover, scaling laws of the harmonic wave emissivity as a function of the ratio of the light velocity to the electron plasma thermal velocity are found. It is also shown how the emissivity depends on the average level of density fluctuations and on the isotropic/anisotropic character of the Langmuir waves’ and density fluctuations’ spectra.
Velocity Acoustic Oscillations on Cosmic Dawn 21 cm Power Spectrum as a Probe of Small-scale Density Fluctuations
Authors: Zhang Xin , Lin Hengjie , Zhang Meng , Yue Bin , Gong Yan , Xu Yidong , Chen Xuelei 
Published: March 2024

Abstract
We investigate the feasibility of using the velocity acoustic oscillations (VAO) features on the Cosmic Dawn 21 cm power spectrum to probe small-scale density fluctuations. In the standard cold dark matter (CDM) model, Population III stars form in minihalos and affect the 21 cm signal through Lyα and X-ray radiation. Such a process is modulated by the relative motion between dark matter and baryons, generating the VAO wiggles on the 21 cm power spectrum. In the fuzzy or warm dark matter models for which the number of minihalos is reduced, the VAO wiggles are weaker or even fully invisible. We investigate the wiggle features in the CDM with different astrophysical models and in different dark matter models. We find that (1) in the CDM model the relative streaming velocities can generate the VAO wiggles for broad ranges of parameters f
*, ζ

X
, and f
esc,LW
ζ
LW, though for different parameters the wiggles would appear at different redshifts and have different amplitudes. (2) For the axion model with m
a ≲ 10−19 eV, the VAO wiggles are negligible. In the mixed model, the VAO signal is sensitive to the axion fraction. For example, the wiggles almost disappear when f
a ≳ 10% for m
a = 10−21 eV. Therefore, the VAO signal can be an effective indicator for small-scale density fluctuations and a useful probe of the nature of dark matter. The Square Kilometre Array-low with ∼2000 hr observation time has the ability to detect the VAO signal and constrain dark matter models.
Preliminary Discussion on the Current Sheet
Authors: Ding Tao , Zhang Jun , Fang Yuan , Ma Zhiying 
Published: March 2024

Abstract
The current sheet is a characteristic structure of magnetic energy dissipation during the magnetic reconnection process. So far, the width and depth of the current sheet are still indefinite. Here we investigate 64 current sheets observed by four telescopes from 1999 to 2022, and all of them have been well identified in the previous literature. In each current sheet, three width values are obtained at the quartering points. Based on these investigated cases, we obtain 192 values, which are in a wide range from hundreds to tens of thousands of kilometers. By calculating the pixel width (PW: the ratio of the current sheet width to the pixel resolution of corresponding observed data) of these current sheets, we find that more than 80% of the PW values concentrate on 2–4 pixels, indicating that the widths of the current sheets are dependent strongly on the instrument resolutions and all the sheets have no observable three-dimensional information. To interpret this result, we suggest that there are two probabilities. One is that the width of the current sheet is smaller than the instrument resolution, and the other is that the detected current sheet is only a small segment of the real one. Furthermore, there is another possible scenario. The so-called current sheet is just an emission-enhanced region.
The ALCHEMI Atlas: Principal Component Analysis Reveals Starburst Evolution in NGC 253
Authors: Harada Nanase , Meier David S. , Martín Sergio , Muller Sebastien , Sakamoto Kazushi , Saito Toshiki , Gorski Mark D. , Henkel Christian , Tanaka Kunihiko , Mangum Jeffrey G. , Aalto Susanne , Aladro Rebeca , Bouvier Mathilde , Colzi Laura , Emig Kimberly L. , Herrero-Illana Rubén , Huang Ko-Yun , Kohno Kotaro , König Sabine , Nakanishi Kouichiro , Nishimura Yuri , Takano Shuro , Rivilla Víctor M. , Viti Serena , Watanabe Yoshimasa , van der Werf Paul P. , Yoshimura Yuki 
Published: March 2024

Abstract
Molecular lines are powerful diagnostics of the physical and chemical properties of the interstellar medium (ISM). These ISM properties, which affect future star formation, are expected to differ in starburst galaxies from those of more quiescent galaxies. We investigate the ISM properties in the central molecular zone of the nearby starburst galaxy NGC 253 using the ultrawide millimeter spectral scan survey from the Atacama Large Millimeter/submillimeter Array Large Program ALCHEMI. We present an atlas of velocity-integrated images at a 1.″6 resolution of 148 unblended transitions from 44 species, including the first extragalactic detection of HCNH+ and the first interferometric images of C3H+, NO, and HCS+. We conduct a principal component analysis (PCA) on these images to extract correlated chemical species and to identify key groups of diagnostic transitions. To the best of our knowledge, our data set is currently the largest astronomical set of molecular lines to which PCA has been applied. The PCA can categorize transitions coming from different physical components in NGC 253 such as (i) young starburst tracers characterized by high-excitation transitions of HC3N and complex organic molecules versus tracers of on-going star formation (radio recombination lines) and high-excitation transitions of CCH and CN tracing photodissociation regions, (ii) tracers of cloud-collision-induced shocks (low-excitation transitions of CH3OH, HNCO, HOCO+, and OCS) versus shocks from star formation-induced outflows (high-excitation transitions of SiO), as well as (iii) outflows showing emission from HOC+, CCH, H3O+, CO isotopologues, HCN, HCO+, CS, and CN. Our findings show these intensities vary with galactic dynamics, star formation activities, and stellar feedback.
« N’ourler ni les manches ni l’histoire » : le nouvel Islam public en Turquie au masculin et les « objets-clipses » comme garants de la foi
Authors: Félix Sousbois Ozan 
Published: March 2024

Porteurs de nombreuses significations, les objets se présentent parfois comme des marqueurs de confrontations idéologiques. Une autre de leurs caractéristiques tient dans leur puissance théâtrale et décorative dans la mise-en-scène des catégories du genre. L’arrivée de l’AKP au pouvoir en 2002, sa mutation idéologique au cours des années 2000 et les multiples tentatives du président actuel d’être le porte-parole du monde musulman dans tout le Proche-Orient semblent avoir joué un rôle dans l’ouverture de l’espace public à la présence islamique, non seulement en Turquie mais également en Europe. Cette visibilité a contribué à définir les contours d’un Islam public valorisant de façon combinée l’individualisme et la contemporanéité face à la tradition. Avec son identité néo-libérale, l’AKP a « connecté » d’un côté les milieux islamo-conservateurs aux dynamiques globales et de l’autre, il a mobilisé ses positions anti-occidentales pour mettre en avant sa posture conservatrice et populiste. Ainsi, l’histoire de l’Islam public en Turquie peut-elle être aussi lue comme un positionnement systématiquement frontal avec la modernisation à l’occidentale. Le « moderne » du kémalisme est, dans ce contexte, flouté, voire estompé, derrière le « moderne » conservateur de l’AKP, toujours à la recherche de sa légitimité socio-culturelle. Moins visible que le sujet conservateur féminin, l’homme a également transformé son image lors de cette période de mutation, transformation toutefois dissimulée par les dynamiques masculinistes et cosmopolites de l’espace urbain turc. Il est devenu dépendant des objets culturels utilisés pour marquer et stabiliser son schéma corporel « conservateur ». Définie comme « fonction-clipse », cette tactique ne le « protège » pas seulement de l’image d’homme hyper-occidentalisé, mais le distingue également d’un Islam traditionnel en lui permettant d’exister en tant qu’acteur politique contemporain et différencié.