bluuebunny/crossref_metadata_2025 huggingface dataset:
Phase Behavior and Phase Equilibria for The Polydisperse Polyethylene + Ethylene + Hexane System at High Pressures and Temperature: Experiments and Correlations
Authors: Rizqy Romadhona Ginting  , Daichi Nakata  , Kazunori Himemura  , Ikuo Ushiki  , Shin-Ichi Kihara  , Shigeki Takishima
Published: January 2024

This study aims to provide experimental phase equilibrium and phase behavior data for polydisperse PE + ethylene + hexane system. Polydisperse PE (Mw 30.0 kg/mol, PDI 4.2) was used with feed PE weight fraction, ⱳF,PE, of 0.02 to 0.20. The experiments based on a synthetic method were conducted at 473.2 K using an apparatus consisted of an equilibrium cell equipped with sampling tubes for solvent-rich and polymer-rich phases. The LL phase separation pressure increased by about 1 MPa for 1 wt% increase in ethylene concentration. The weight fraction of PE in solvent-rich phase, ⱳS,PE, decreased as the ⱳF,PE and pressure decreased. Similarly, the weight fraction of PE in polymer-rich phase, ⱳP,PE, also decreased as the ⱳF,PE decreased. The solvent-rich phase contained lower molecular weight fractions of PE, while the polymer-rich phase contained higher molecular weight fractions. These results were correlated and predicted with the Sanchez-Lacombe (S-L) EoS. Finally, the effects of pressure and ⱳF,PEon solvent recovery ratio were investigated with the S-L EoS. The results provided in this study could be used to obtain the higher hexane recovery by controlling the LL separation pressure.
Electrode Wear Rate of RBD Palm Oil as Dielectric Fluids on Electrical Discharge Machining (EDM) at Different Peak Current and Pulse Duration of Titanium Alloys
Authors: Aiman Supawi  , Said Ahmad  , Norfazillah Talib  , Lee Woon Kiow  , Ho Fu Haw  , Mohd Amri Lajis
Published: January 2024

Electrical Discharge Machining (EDM) is a widely utilized commercial method for generating a variety of forms of materials that are used as the fundamental material in a wide range of industries. Vegetable oil as the dielectric fluid is one technique for assuring EDM's long-term viability because it is ecologically benign and biodegradable. This article presents experimental investigations on the influence of electrical discharge machining (EDM) input parameters on electrode wear rate (EWR) while using EDM oil and vegetable oil as dielectric fluid. Kerosene which is known as conventional oil for EDM has been used as a benchmark to compare the feasibility of the EDM process by using a different type of dielectric fluid which is RBD palm oil. Peak currents (Ip) in the 6 to 12A range and pulse durations (ton) in the 50 to 150 µs range were chosen as the major factors for this study to improve the efficiency of EDM operation. Scanning electron microscopy (SEM) was used to observe the morphology surface characteristics of the copper electrode and the migration of workpiece material elements to the tool electrode. The EWR increases with increasing peak current, although it is inversely related to pulse duration. The lowest EWR for kerosene and RBD palm oil is 0.0416mm3/min and 0.0480mm3/min, respectively, at the same IP=6A and ton=150µs. Simultaneously, the highest EWR for both kerosene and RBD palm oil was at the same IP=12A and ton=50µs, which is 0.1725mm3/min and 0.2425mm3/min, respectively.
Effect of Thermoelectric Legs on Electrical Performance of Single Leg Teg using Multiphyiscs Simulation
Authors: Siti Fadzillah Nurain Sidi Omar  , Norhafizah Burham  , Maizan Muhamad  , Anees Abdul Aziz
Published: January 2024

This paper was produced to examine the impact of the number of legs on TEGs while also demonstrating how to model and simulate a single-leg thermoelectric generator (TEG) using the COMSOL Multiphysics software platform. Using thermoelectric materials like SrTiO3 and Ca2FeMoO6, a simulation study of the performance of TEG was created. Therefore, by altering the hot side temperature from TH = 300K, 400K, and 500K and varying the load resistance from 0Ω to 20Ω, the influence of various performance metrics, such as output voltage and output power, has been demonstrated and investigated. It has been shown that the thermoelectric legs' material characteristics have a significant impact on how hot or cold the TE module is. Finally, it was discovered that single-leg TEG performs worse than TEG using a single thermocouple. By performing additional studies on the modeling of different numbers of TE legs, the performance of the TEG may therefore be further improved to help society deal with the energy issue.
Optimization of Nozzle Design for Weight Reduction using Variable Wall Thickness
Authors: Khizar Ahmed Pathan  , Zakir Ilahi Chaudhary  , Ajaj Rashid Attar  , Sher Afghan Khan  , Ambareen Khan
Published: January 2024

In various fields, including rockets, turbines, and engines, the critical role played by nozzles in achieving optimal performance is underscored. Within the domain of rocketry, particular attention is given to the weight of the nozzle, where even the slightest modifications in weight can lead to a profound impact on rocket performance. In this research, an endeavor is made to comprehensively investigate the intricate interplay of nozzle pressure ratio, nozzle thickness, and Mach number, to unveil the effects of these parameters on nozzle deformation, the development of equivalent stress, and the pivotal factor of safety. Material optimization strategies for a wide array of flow and geometrical parameters are also explored within the framework of this study. With each parameter considered at four levels, an exploration is conducted across Mach numbers of 1.5, 2.0, 2.5, and 3.0, alongside Nozzle Pressure Ratios of 2, 4, 6, and 8. The meticulous analysis of nozzle thicknesses at levels of 1 mm, 2 mm, 3 mm, and 4 mm is carried out. The computational fluid dynamics (CFD) analysis is systematically executed across all cases, with resultant pressure profiles on the internal surfaces of the nozzle serving as essential boundary conditions for static structural analysis. The presentation of findings entails a comprehensive discussion of the factor of safety values for all parameter combinations. Significantly, it is observed from our results that a direct correlation exists between nozzle thickness and factor of safety, with an increase in nozzle thickness corresponding to an enhancement in factor of safety.
MITIGASI BENCANA LONGSOR DENGAN TANAMAN VETIVER DI RT 03 RW 06 KELURAHAN KALIBARU, KECAMATAN CILODONG, KOTA DEPOK
Authors: Yelvi  , Wiyono Eko , Lativa Eva Azhra , Pramusandi Sony , Salimah Aisyah
Published: January 2024

Potensi kelongsoran merupakan salah satu permasalahan lingkungan yang sering kurang disadari oleh masyarakat. Daerah yang memiliki kemiringan tanah yang curam akan rawan terhadap longsor. Pembangunan permukiman di daerah tersebut harus mendapat perhatian yang khusus. Permasalahan lingkungan ini menjadi fokus kegiatan Pengabdian kepada Masyarakat (PkM) bagi Tim Kelompok Bidang Keahlian (KBK) Geoteknik, Pengukuran dan Jalan Raya. Mitigasi diperlukan untuk mencegah terjadinya kelongsoran sebelum terjadinya bencana. Tim PkM melakukan mitigasi dengan tujuan agar masyarakat mengenali risiko, kesadaran akan risiko bencana, dan perencanaan penanggulangannya. Mitigasi dilakukan dengan menanam tanaman vetiver (akar wangi) pada suatu lereng di RT 03 RW 06 Kelurahan Kalibaru, Kecamatan Cilodong, Depok. Pemilihan tanaman rumput vetiver dimaksudkan untuk menjaga dan meningkatkan Ruang Terbuka Hijau (RTH) terutama di kawasan permukiman daerah perkotaan. Kegiatan PkM ini melibatkan masyarakat dari mulai pelaksanaan, pemeliharaan dan evaluasi kegiatan. Evaluasi kegiatan menunjukkan 70,62% warga masyarakat menyatakan Sangat Setuju dan 29,78 menyatakan Setuju dari 25 responden. Hal ini menunjukkan kepuasan masyarakat terhadap kegiatan PkM ini 100%. Masyarakat berharap Tim PkM dapat terus mendampingi dalam memberikan arahan pada masyarakat untuk dapat mengambil manfaat lain dari tanaman ini selain dari mencegah longsor.
PENGOLAHAN SAMPAH PLASTIK MELALUI KREATIVITAS PRODUK ECOBRICK
Authors: Dinatha Ngurah Mahendra , Kua Maria Yuliana , Laksana Dek Ngurah Laba , Qondias Dimas , Dolo Fransiskus Xaverius , Gelu Afrianus , Pare Prisko Yanuarius Djawaria , Bhala Maria Regina , Meo Katarina
Published: January 2024

Pengolahan sampah plastik semakin mengalami banyak perkembangan. Kini tidak hanya bisa dilakukan oleh berbagai perusahaan besar di dunia bahkan juga bisa dilakukan oleh perorangan atau kelompok kecil. Sampah plastik biasanya dibakar bersamaan dengan jenis sampah lainnya. Namun, sebenarnya hal tersebut tidak aman bagi kesehatan dan lingkungan di sekitarnya. Maka prinsip 3R yaitu Reduce (mengurangi), Reuse (menggunakan kembali), dan Recycle (mendaur ulang) selayaknya kita terapkan dalam mengatasi sampah plastik dengan cara simpel namun efektif, yaitu Ecobrick. Ecobrick adalah metode dengan cara botol plastik yang diisi secara padat dengan sampah anorganik, yaitu plastik. Ecobrick dapat digunakan sebagai solusi mengatasi sampah plastik menjadi produk baru yang memiliki nilai manfaat dan nilai jual dengan cara memberdayakan individu untuk bertanggungjawab atas sampah mereka dari sumbernya. Tekniknya sederhana dan sangat mudah, karenanya bisa menyebar dengan cepat melalui jaringan sosial (komunitas, desa, sekolah, dll). Proyek komunitas dengan ecobrick akan membawa masyarakat secara bersama-sama bergerak membersihkan dan menghijaukan lingkungan. Metode ini cocok diterapkan di kampus STKIP Citra Bakti karena adanya masalah sampah plastik di areal kampus. Adapun tujuan dari pengabdian ini adalah untuk mengetahui cara pembuatan ecobrick dengan memanfaatkan botol dan sampah plastik serta untuk mengetahui cara pembuatan meja dan kursi menggunakan ecobrick. Sedangkan metode yang digunakan adalah pelatihan dan terjun langsung kelapangan. Kegiatan dilaksanakan dengan mengumpulkan sampah botol plastik dan juga plastik-plastik kemasan di wilayah kampus STKIP Citra Bakti dengan sasaran mahasiswa yang merasa tertarik dengan pengolahan sampah plastik menjadi produk ecobrick. Adapun hasil dari kegiatan ini adalah mahasiswa mampu membuat ecobrick dan memanfaatkan sampah plastic menjadi produk yang lebih bermanfaat
PEMANFAATAN LIMBAH CANGKANG KERANG SEBAGAI ALTERNATIF PEMBUATAN KERAJINAN CINDERAMATA WISATA PANTAI GOPE KARANGANTU BANTEN
Authors: Mahendra Yoga , Asfar Andi Hasryningsih , Ainulhaq Nurisa , Pratiwi Ika , Quraysin Icin , Riyanto Afit , Fadillah Syafira Nur , Rohmah Siti
Published: January 2024

Masyarakat sekitar wisata Pantai Gope selama ini adalah belum memahami potensi ekonomis yang terkandung dalam berbagai jenis dan bentuk limbah cangkang kerang, sehingga limbah ini hanya dianggap sebagai bahan pembuangan. Hal ini disebabkan kurangnya keterampilan dasar di kalangan penduduk Kelurahan Banten dalam mengubah limbah cangkang kerang menjadi produk seni kerajinan yang unik dan bernilai ekonomi. Penggunaan cangkang kerang tidak hanya meningkatkan nilai ekonomi produk, tetapi juga berperan dalam menjaga kelestarian lingkungan. Kegiatan pemberdayaan masyarakat ini bertujuan untuk memberdayakan mereka dalam mengolah potensi limbah cangkang kerang menjadi karya seni kerajinan kreatif yang bisa menjadi cinderamata wisata. Mitra kegiatan berasal dari kelompok istri nelayan di wilayah Karangantu, Kelurahan Banten. Metode pelaksanaannya meliputi penyuluhan, demonstrasi, pelatihan dan pembinaan dalam pengembangan limbah kerang sebagai peluang usaha. Kegiatan pelatihan ini berhasil dilaksanakan karena peserta menunjukkan antusiasme yang tinggi dalam belajar seni kerajinan dari kerang. Hasilnya, berbagai macam produk dan model yang dihasilkan sangat beragam, termasuk kotak tisu, lonceng angin, tirai pintu/jendela, gantungan kunci, bohlam kamar, lampion, pot bunga, asbak, bros, gelang, gantungan tas, dan tali masker. Hasil dari kegiatan ini melibatkan: 1) keterampilan dalam memilah dan mengolah bahan baku cangkang kerang, termasuk teknik pembersihan, pemotongan, dan pemboran; 2) kemampuan dalam merancang bentuk dan desain, serta menghasilkan berbagai aksesori dari limbah cangkang; dan 3) respons positif dari kelompok ibu nelayan yang dengan antusias berkreasi menggunakan bahan yang tersedia. Kesimpulan dari upaya pemberdayaan ini adalah terbentuknya kelompok kerajinan yang terdiri dari istri-istri nelayan di Kelurahan Banten dalam rangka keberlangsungan kegiatan pelatihan.
INTERNALISASI KARAKTER PEDULI LINGKUNGAN PADA PESERTA DIDIK SDN 4 SENDANGREJO MELALUI KEGIATAN PENDAMPINGAN DI LUAR KELAS
Authors: Ulfah Anisa , Huda Miftahul , Siyatin Marlina Nur , Salamiyah Annisa’atus , Sari Niken Kurnia , Sania Eka Nur
Published: January 2024

Kegiatan pengabdian masyarakat ini dilatarbelakangi oleh kenyataan di lapangan yang menunjukkan lemahnya perhatian masyarakat Desa Sendangrejo terhadap lingkungannya. Hal tersebut tampak pada melimpahnya sampah dedaunan yang ada di desa belum dimanfaatkan dengan baik oleh masyarakat. Kurangnya pengetahuan dan pengalaman dalam mengelola sampah menjadi salah satu sebab lemahnya karakter peduli lingkungan seseorang. Kegiatan pengabdian ini bertujuan untuk dapat menginternalisasi nilai karakter peduli lingkungan melalui kegiatan pendampingan di luar kelas. Mitra pengabdian ini ialah SDN 4 Sendangrejo dengan asumsi bahwa karakter peserta didik di usia tersebut masih dapat ditanamkan melalui pendidikan dan kegiatan pembelajaran. Adapun metode yang digunakan dalam pengabdian ini ialah metode sosialisasi (tentang kebersihan dan kelestarian lingkungan), demonstrasi (pemanfaatan sampah menjadi pupuk kompos), pelatihan (pemanfaatan barang bekas), serta pelibatan secara langsung peserta didik dalam kegiatan kerja bakti, dan evaluasi. Melalui kegiatan-kegiatan tersebut, peserta didik mendapatkan pengetahuan dan pengalaman secara langsung sehingga dapat meningkatkan kesadaran dan kepeduliannya terhadap lingkungan. Hal tersebut tampak pada sikap-sikap peserta didik selama masa pengabdian yang semula tidak peduli pada sampah-sampah di lingkungan sekolahnya menjadi lebih peduli untuk menjaga kebersihan lingkungan di sekitarnya. Sikap tersebut ditunjukkan di antaranya melalui jadwal piket yang dilaksanakan dengan baik, toilet sekolah lebih bersih dan tidak lagi bau, sampah-sampah dibuang di tempat sampah sesuai jenisnya, serta meningkatnya partisipasi peserta didik dan dukungan guru dalam setiap kegiatan pendampingan di luar kelas yang dirutinkan pihak sekolah.
Implementation of the Legality Principle in the Criminal Justice System of Indonesia
Authors: AMIR Firman , MEIFANI Marina Tresna Ayu , SATRIADI  , SETIYONO Aries , MIKO  , KRISTHY Mutia Evi
Published: January 2024

Purpose:The legality principle, a fundamental concept in Indonesian criminal law, underpins the legal framework for societal order. Originating from historical roots, it ensures justice, human rights protection, and transparent law enforcement. Article 1 Paragraph 1 of the Criminal Code solidifies its significance in Indonesian positive law. By examining the historical evolution, implications, and challenges of the legality principle, this article aims to deepen the comprehension of its impact on Indonesian criminal law. The ultimate goal is to contribute to a just and effective judicial system.Methodology:This study employs standard research methods, including a legal literature review and analysis of court decisions, to explore the application of the legality principle in the Indonesian criminal justice system.Findings:The principle enshrined in Article 1 Paragraph (1) of the Criminal Code emphasizes that punishment must align with pre-existing laws. It prohibits retroactive application and analogy use and ensures adherence to formal legal principles. In the Indonesian context, the legality principle is crucial for protecting citizens' rights, maintaining justice, and upholding societal values. Its application intersects with legal concepts like "nulla crimen sine lege," highlighting its significance in shaping the nation's legal landscape.Implication:The study highlights key findings on legal principles in the Indonesian criminal system, emphasizing the centrality of the legality principle, a formalistic approach, and ongoing efforts to integrate material aspects. Challenges include incorporating customary law and potential conflicts between legal systems.
Muses and Misogyny in Decadent Modernism
Authors: Blumberg Angie
Published: January 2024

This chapter uncovers how female writers and artists across the long turn of the century work to expose, undermine, or recast the misogynistic artist/model relationship in their prose. To track this thread of responses to the artist/model dynamic, Blumberg engages with the aesthetic sensibility known as Decadent Modernism, or the New Decadence. Focusing on Sarah Grand’s “The Undefinable, a Fantasia” (1894) and H.D.’s White Rose and the Red (1948; 2009), Blumberg exposes how misogyny often operates within aesthetic communities and texts. The chapter unearths the tangled roots of misogyny in artistic communities and suggests ways of crafting more fruitful aesthetic communities for the #MeToo era by examining the Guerilla Girls and their critique of the Metropolitan Museum in 1989.
Defiant Martyrs, Repentant Sinners, and Pioneer Players
Authors: Taylor Ben Lee
Published: January 2024

Between 1912 and 1914, English playwright and activist Christopher St. John translated six plays written by tenth-century canoness Hrotsvit of Gandersheim. Hrotsvit’s works center on the resilience of female characters who either experience extreme violence at the hands of Roman authorities or must undertake a regimen of self-deprivation to repent for sexual sins. Examining four of Hrotsvit’s “virgin” and “fallen women” plays, Taylor argues that St. John’s translations enact a transhistorical expression of political, bodily, and sexual autonomy. By placing St. John’s translations within the context of early twentieth-century women’s suffragist movements—as well as the ongoing contemporary #MeToo movement and its offshoots—this analysis reveals the political potential at the intersection of Hrotsvit’s heroic medieval martyrs and St. John’s indignant modern suffragists.
Street Harassment in Wells, Joyce, and Woolf
Authors: Bond Candis E.
Published: January 2024

Due to changing social norms, industrialization, and women entering the workforce and the public sphere at record rates at the onset of modernity, modernist texts often feature women traversing urban, public spaces, and many of these female characters experience what is now called street harassment. Women’s increasing presence in public spaces was perceived as a threat to the patriarchal order; as women sought greater freedom, mechanisms of surveillance and control emerged to inhibit their movement. Bond analyses three modernist texts to explore literary representations of street harassment. In Ann Veronica (1909), Dubliners (1914), and The Years (1937), vivid turn-of-the-century urban landscapes feature as spaces where women and children must be wary of sexual predators at every turn as they seek greater independence. While Wells and Woolf focus on women’s subjectivity, Joyce interrogates modern masculinity’s ties to sexual aggression and violence against women. These authors treated street harassment as deeply embedded within spatio-social structures upholding patriarchy, nation, empire, and war: public urban streets feature in their works as landscapes where women and children must simultaneously navigate opportunities for freedom and threats against their person.
Rescuing Women from Historical Amnesia
Authors: Schwarz Daniel R.
Published: January 2024

Schwarz discusses female characters in A French Village (2009-2017), Babylon Berlin (2017-2020), and The War is Over (2021), three recent TV series watched by large audiences in their country of origin; these series are affecting the way WWII history and specifically the Holocaust is taught in France, Germany, and Italy. The primary purpose of each series is to show how each country’s dominant historical narrative has suppressed essential embarrassing facts and to propose an alternative resistant narrative. An important part of the resistant narrative of these series is to stress the role of women in shaping history and how the women overcome potential #MeToo situations to take charge of their sexuality and their social roles as well as to challenge categorical stereotypes. But each series also shows the kind of exploitive #MeToo situations—including in two of the series, rape—that women faced in the first half of the twentieth century and still face.
A Parsec-scale Catalog of Molecular Clouds in the Solar Neighborhood Based on 3D Dust Mapping: Implications for the Mass–Size Relation
Authors: Cahlon Shlomo , Zucker Catherine , Goodman Alyssa , Lada Charles , Alves João
Published: January 2024

We dendrogram the Leike et al. 3D dust map, leveraging its ∼1 pc spatial resolution to produce a uniform catalog of molecular clouds in the solar neighborhood. Using accurate distances, we measure the properties of 65 clouds in true 3D space, eliminating much of the uncertainty in mass, size, and density. Clouds in the catalog contain a total of 1.1 × 105
M
☉, span distances of 116−440 pc, and include a dozen well-studied clouds in the literature. In addition to deriving cloud properties in 3D volume density space, we create 2D dust extinction maps from the 3D data by projecting the 3D clouds onto a 2D “Sky” view. We measure the properties of the 2D clouds separately from the 3D clouds. We compare the scaling relation between the masses and sizes of clouds following Larson. We find that our 2D projected mass–size relation, M ∝ r
2.1, agrees with Larson's Third Relation, but our 3D derived properties lead to a scaling relation of about one order larger: M ∝ r
2.9. Validating predictions from theory and numerical simulations, our results indicate that the mass–size relation is sensitive to whether column or volume density is used to define clouds, since mass scales with area in 2D (M ∝ r
2) and with volume in 3D (M ∝ r
3). Our results imply a roughly constant column and volume density in 2D and 3D, respectively, for molecular clouds, as would be expected for clouds where the lower density, larger volume-filling gas dominates the cloud mass budget.
Redshifted Iron Emission and Absorption Lines in the Chandra X-Ray Spectrum of Centaurus A
Authors: Bogensberger David , Miller Jon , Kammoun Elias , Mushotzky Richard , Brenneman Laura , Brandt W. N. , Cackett Edward M. , Fabian Andrew , Kaastra Jelle , Dattathri Shashank , Behar Ehud , Zoghbi Abderahmen
Published: January 2024

Cen A hosts the closest active galactic nucleus to the Milky Way, which makes it an ideal target for investigating the dynamical processes in the vicinity of accreting supermassive black holes. In this paper, we present 14 Chandra HETGS spectra of the nucleus of Cen A that were observed throughout 2022. We compared them with each other, and contrasted them against the two previous Chandra HETGS spectra from 2001. This enabled an investigation into the spectral changes occurring on timescales of months and 21 years. All Chandra spectra could be well fitted by an absorbed power law with a strong and narrow Fe Kα line, a leaked power-law feature at low energies, and Si and S Kα lines that could not be associated with the central engine. The flux of the continuum varied by a factor of 2.74 ± 0.05 over the course of the observations, whereas the Fe line only varied by 18.8% ± 8.8%. The photon index increased over 21 years, and the hydrogen column density varied significantly within a few months as well. The Fe Kα line was found at a lower energy than expected from the Cen A redshift, amounting to an excess velocity of

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relative to Cen A. We investigated warped accretion disks, bulk motion, and outflows as possible explanations of this shift. The spectra also featured ionized absorption lines from Fe xxv and Fe xxvi, describing a variable inflow.
“Tidal Peeling Events”: Low-eccentricity Tidal Disruption of a Star by a Stellar-mass Black Hole
Authors: Xin Chengcheng , Haiman Zoltán , Perna Rosalba , Wang Yihan , Ryu Taeho
Published: January 2024

Close encounters between stellar-mass black holes (BHs) and stars occur frequently in dense star clusters and in the disks of active galactic nuclei. Recent studies have shown that in highly eccentric close encounters, the star can be tidally disrupted by the BH in a microtidal disruption event (microTDE), resulting in rapid mass accretion and possibly bright electromagnetic signatures. Here we consider a scenario in which the star might approach the stellar-mass BH in a gradual, nearly circular inspiral, under the influence of dynamical friction in a circum-binary gas disk or three-body interactions in a star cluster. We perform hydrodynamics simulations of this scenario using the smoothed particle hydrodynamics code PHANTOM. We find that under certain circumstances (for initial eccentricity e
0 ≳ 0.4 and penetration factor β = 1, or e
0 < 0.4 and β ≲ 0.67), the mass of the star is slowly stripped away by the BH. We call this gradual tidal disruption a “tidal-peeling event.” Additionally, we discover that some low-eccentricity microTDEs (e
0 < 0.4 and β = 1) are a new form of fast luminous transients similar to parabolic microTDEs. Depending on the initial distance and eccentricity of the encounter, these low-eccentricity microTDEs might exhibit significant accretion rates and orbital evolution distinct from those of a typical (eccentric) microTDE.
Dissecting the γ-Ray Emissions of the Nearby Galaxies NGC 1068 and NGC 253
Authors: Ji Shunhao , Wang Zhongxiang , Xing Yi , Yan Dahai , Zheng Jintao
Published: January 2024

Intrigued by recent high-energy study results for nearby galaxies with γ-ray emission and in particular NGC 1068 that has been detected as a neutrino-emitting source by the IceCube Neutrino Observatory, we conduct a detailed analysis of the γ-ray data of the galaxies NGC 1068 and NGC 253, obtained with the Large Area Telescope on board the Fermi γ-ray Space Telescope. By checking their possible spectral features and then constructing light curves in the corresponding energy ranges, we identify spectral-change activity from NGC 1068 in the ≥2 GeV energy range and long-term, statistically significant changes for NGC 253 in the ≥5 GeV energy range. In the former, the emission appears harder in two half-year periods than in the otherwise “quiescent” state. In the latter, an ∼two-fold decrease in the detection significance after MJD = 57023 is clearly revealed by the test-statistic maps we obtain. Considering the previous studies carried out and the various models proposed for the γ-ray emissions of the two sources, we discuss the implications of our findings. We suspect that a jet (or outflow) in NGC 1068 might contribute to the γ-ray emission. The nature of the long-term statistically significant changes for NGC 253 is not clear, but since the part of the GeV emission may be connected to the very-high-energy (VHE) emission from the center of the galaxy, it could be further probed with VHE observations.
Measuring the Hubble Constant of Binary Neutron Star and Neutron Star–Black Hole Coalescences: Bright Sirens and Dark Sirens
Authors: Yu Jiming , Liu Zhengyan , Yang Xiaohu , Wang Yu , Zhang Pengjie , Zhang Xin , Zhao Wen
Published: January 2024

Observations of gravitational waves (GW) provide us with a new probe to study the Universe. GW events can be used as standard sirens if their redshifts are measured. Normally, standard sirens can be divided into bright/dark sirens according to whether the redshifts are measured by electromagnetic (EM) counterpart observations. First, we investigate the capability of the 2.5 m Wide-Field Survey Telescope (WFST) to take follow-up observations of kilonova counterparts. For binary neutron star (BNS) bright sirens, WFST is expected to observe 10–20 kilonovae per year in the second-generation GW detection era. As for neutron star–black hole (NSBH) mergers, when a BH spin is extremely high and the neutron star (NS) is stiff, the observation rate is ∼10 per year. Combining optical and GW observations, the bright sirens are expected to constrain the Hubble constant H
0 to ∼2.8% in five years of observations. As for dark sirens, the tidal effects of NSs during merging provide us with a cosmological model-independent approach to measure the redshifts of GW sources. Then we investigate the applications of tidal effects in redshift measurements. We find in the third generation era, the host galaxy groups of around 45% BNS mergers at z < 0.1 can be identified through this method, if the equation of state is ms1, which is roughly equivalent to the results from luminosity distant constraints. Therefore, tidal effect observations provide a reliable and cosmological model-independent method of identifying BNS mergers’ host galaxy groups. Using this method, the BNS/NSBH dark sirens can constrain H
0 to 0.2%/0.3% over a five-year observation period.
Dimorphos Orbit Determination from Mutual Events Photometry
Authors: Scheirich Peter , Pravec Petr , Meyer Alex J. , Agrusa Harrison F. , Richardson Derek C. , Chesley Steven R. , Naidu Shantanu P. , Thomas Cristina , Moskovitz Nicholas A.
Published: January 2024

The NASA Double Asteroid Redirection Test spacecraft successfully impacted the Didymos–Dimorphos binary asteroid system on 2022 September 26 UTC. We provide an update to its preimpact mutual orbit and estimate the postimpact physical and orbital parameters, derived using ground-based photometric observations taken from 2022 July to 2023 February. We found that the total change of the orbital period was −33.240 ± 0.072 minutes (all uncertainties are 3σ). We obtained the eccentricity of the postimpact orbit to be 0.028 ± 0.016 and the apsidal precession rate was 7.3 ± 2.0 degrees day−1 from the impact to 2022 December 2. The data taken later in 2022 December to 2023 February suggest that the eccentricity dropped close to zero or the orbit became chaotic approximately 70 days after the impact. Most of the period change took place immediately after the impact, but in the few weeks following the impact it was followed by an additional change of

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s or −19 ± 18 s (the two values depend on the approach we used to describe the evolution of the orbital period after the impact—an exponentially decreasing angular acceleration or the assumption of a constant orbital period, which changed abruptly some time after the impact, respectively). We estimate the preimpact Dimorphos–Didymos size ratio was 0.223 ± 0.012 and the postimpact is 0.202 ± 0.018, which indicate a marginally significant reduction of Dimorphos’ volume by (9 ± 9)% as the result of the impact.
What is the Consumer Attitude toward Healthcare Services? A Transfer Learning Approach for Detecting Emotions from Consumer Feedback
Authors: Alshouha Bashar , Serrano-Guerrero Jesus , Elizondo David , Romero Francisco P. , Olivas Jose A.
Published: January 2024

The capability of offering patient-centered healthcare services involves knowing the consumer needs. Many of these needs can be conveyed through opinions about services that can be found on social networks. The consumers/patients can express their complains, satisfaction, frustration, etc. in terms of feelings and emotions toward those services; for that reason, it is pivotal to accurately detect them. There are many recent techniques to detect sentiments or emotions, but one of the most promising is transfer learning. This allows adapting a model originally trained for a task to a different one by fine-tuning. Following this idea, the primary objective of this research is to study whether several pre-trained language models can be adapted to a task such as patient emotion detection in an efficient manner. For this purpose, seven clinical and biomedical pre-trained models and four domain-general models have been adapted to detect multiple emotions. These models have been tuned using a dataset consisting of real patient opinions which convey several emotions per opinion. The experiments carried out state the domain-specific pre-trained models outperform the domain-general ones. Particularly, Clinical-Longformer obtained the best scores, 98.18% and 95.82% in terms of accuracy and F1-score, respectively. Analyzing the patient feedback available on social networks may provide valuable knowledge about consumer sentiments and emotions, especially for healthcare managers. This information can be very interesting for purposes such as assessing the quality of healthcare services or designing patient-centered services.
Cyrtandra obliquifolia (Gesneriaceae), a new species from Kaua‘i, Hawaiian Islands
Authors: Wood Kenneth R. , Wagner Warren L.
Published: January 2024

Cyrtandra obliquifolia K.R. Wood & W.L. Wagner (Gesneriaceae), a new shrub species known only from Kaua‘i, Hawaiian Islands, is described and illustrated with notes on its distribution, ecology, and conservation status. The new species is morphologically most similar to Cyrtandra wawrae C.B. Clarke but differs by its unique combination of oblique, non-peltate, auriculate leaf bases, more deeply divided calyx lobes, inflorescence with fewer flowers and lacking profusely umbellate cymes. Cyrtandra obliquifolia is known from only two localities which have undergone severe habitat degradation from landslides and invasive plants and animals and is determined to be Critically Endangered (CR) when evaluated under IUCN criteria.
Disruption of the Covid-19 pandemic on the agri-food sector: A systematic review of its implications in post-pandemic and future of food security
Authors: Salisu Monsuru Adekunle , Ridzwan Che Rus , Oyebamiji Yusuf Opeyemi , Usaizan Norhanizan , Abioye Abiodun Emmanuel , Biola Idris Fadheelah , Bamiro Nurudeen Babatunde , Omowunmi Ahmed Kayode , Luqman Hussain
Published: January 2024

The unprecedented challenges posed by the global COVID-19 pandemic have significantly impacted various sectors, with the agri-food system proving especially vulnerable to disruptions. Ensuring food security and bolstering the resilience of agri-food systems in the aftermath of the pandemic has emerged as a crucial concern. Utilizing the PRISMA protocol, this systematic literature review systematically searched relevant databases and repositories using specific keywords related to agri-food security in the pre and post-pandemic context. The final review incorporated 37 articles. The results revealed that the pandemic profoundly impacted all facets of the agri-food sector, particularly agri-food systems. Despite this, we identified several measures that were implemented or recommended to mitigate disruptions caused by the pandemic and ensure the resilience of the agri-food sector for future similar events. Robust policy measures, promotion of urban agriculture, support for small-scale farmers, enhancement of the international market, technological innovations, collaborations, research and development, and the promotion of novel foods were all highlighted as crucial resilience measures. Policymakers, researchers, and stakeholders are urged to adopt a comprehensive approach encompassing these measures to build a resilient and secure food future in the post-pandemic era.
Starting from the landscape to read conflicts
Authors: Messina Giovanni , Terranova Giuseppe
Published: January 2024

This special issue of AIMS Geosciences, "Conflicts and landscapes: toward a new Anthropocene?", sought to explore, from a geographical and transcalar perspective, how conflict affects the transformation of landscapes. Focusing on contemporary challenges and criticalities, through the many case studies collected, this special issue offers a critical and timely reading of the identified issue and stands as a first step in a reflection to be continued.
¿Hierro meteórico en el Tesoro de Villena?
Authors: Rovira-Llorens Salvador , Renzi Martina , Montero Ruiz Ignacio
Published: January 2024

La presencia en el Tesoro de Villena (Alicante) de dos piezas de hierro, una semiesfera hueca y un brazalete o anilla abierta, han generado polémica en torno a su cronología desde su descubrimiento en 1963. Se presentan los datos de nuevos análisis cuyos resultados abogan en favor de que ambas piezas sean de hierro meteorítico, implicando la posibilidad de ubicar su cronología en algún momento del Bronce Tardío anterior al inicio de la producción de hierro terrestre.
Transitions écologique et numérique : quelle régulation du sens par la Commission européenne ?
Authors: Hermand Marie-Hélène
Published: January 2024

Cet article interroge la manière dont la Commission européenne (CE) fait coexister les arguments en faveur de la transition écologique et de la transition numérique, deux priorités stratégiques 2019-2024 difficilement conciliables. Aussi intimement liées sur le fond que séparées sur la forme, les transitions écologique et numérique font l’objet de deux rubriques distinctes sur le portail web de la CE : elles constituent le corpus de l’étude, multimodal et riche d’un point de vue éditorial. Après avoir situé notre démarche au sein des approches théoriques de la communication publique européenne et élaboré la méthodologie selon une approche discursive et sémiotique, nous confrontons les résultats de l’analyse du discours à ceux de l’étude des paysages textuels (textscapes). Les filiations discursives, les tensions, les variants (motifs, récits, modèles proposés ; lieux et moment signifiants) et les invariants (énoncés gnomiques) repérés permettent de préciser la doxa sur laquelle repose le paradoxe communicationnel considéré.
Comment La charte “Ya d’ar brezhoneg” est devenue un outil incontournable de la revitalisation et de la normalisation de la langue bretonne
Authors: Choplin Cédric
Published: January 2024

Initiée et promue par l’Office de la langue bretonne (désormais Office public de la langue bretonne), la charte Ya d’ar Brezhoneg (Oui au breton) est devenue, après vingt ans d’existence, un outil incontournable de la revitalisation et de la normalisation de la langue bretonne. Avec pas moins de 790 structures privées, 231 communes et 15 structures intercommunales signataires, elle bénéficie d’une publicité et d’un impact certain dans tous les secteurs de la vie de la région. Comment cette charte a-t-elle été conçue et a pu rencontrer un tel succès, quelles sont aujourd’hui les limites des actions qu’elle porte, quelles en sont les perspectives ?Dans cet article, basé en grande partie sur des entretiens avec différents acteurs et l’étude de la presse, nous insisterons dans un premier temps sur la réflexion sociolinguistique qui a présidé à la conception de la charte ; dans un second temps, nous traiterons des clés de son succès et des rares réactions négatives qu’elle a pu susciter ; dans un troisième temps, nous reviendrons sur l’expérience de l’entrepreneur Denez Pichon, signataire de la charte dans son entreprise de hautes technologies.
Ironie ou malentendu ? Usages techno-discursifs et inégalités sémantiques dans les commentaires des réseaux socio-numériques
Authors: Ammari Djihane , Bacha Youcef
Published: January 2024

La présente contribution s’inscrit dans le domaine de l’analyse du discours numérique, précisément l’analyse d’un techno-genre, celui des commentaires dans les réseaux socio-numériques. Nous y cherchons, d’abord, à dévoiler la particularité de l’usage de deux phénomènes discursifs à savoir : l’ironie et le malentendu dans une écologie numérique du discours produit dans le web 2.0 ; ensuite, à faire un distinguo entre ces deux procédés en termes de leur réception sémantique qui représente généralement un décalage du sens en matière de leur interprétation et de leur compréhension. Par une analyse qualitative des données, nous recourons à une page Facebook algérienne : Diridarek.com pour montrer que l’ironie est une résultante d’un malentendu, deux procédés utilisés dans l’intention de modifier le sens de l’énonciation première par les commentaires des réseaux socio-numériques.
Les avatars du formalisme russe et soviétique en Europe et aux États-Unis (1915-1968)
Authors: Fiszer Stanisław
Published: January 2024

Dans la préface de la Théorie de la littérature (1965), Roman Jakobson affirme que c’est grâce au Cercle linguistique de Prague fondé en 1926 que les idées du formalisme russe « sont entrées dans la circulation mondiale ». En partant de cette affirmation, l’auteur de l’article cherche à établir les modes de diffusion des idées en question entre 1915 et 1968. Ensuite, il observe les facteurs sociaux et politiques qui ont facilité ou freiné leur circulation en Europe et aux États-Unis. Finalement, il étudie leurs transformations par rapport aux idées originelles.
À la recherche de Titine en Europe centrale (avant 1989)
Authors: Wojda Aleksandra
Published: January 2024

Dédié aux circulations culturelles centre-européennes de la chanson Je cherche après Titine, l’article étudie ses nombreuses réécritures à succès proposées par des paroliers, traducteurs et interprètes de langue polonaise (Włast et Hemar), tchèque (Suchý) et hongroise (Harmath), qui ont contribué à son inscription durable dans le paysage sonore de la région. À partir d’une analyse de ce corpus, inspirée aussi bien des outils proposés par l’histoire culturelle des circulations (Csáky, Francfort, Poirrier & Le Texier) que de la cantologie (Hirschi, July, Zubiate), l’auteure réinterroge quelques catégories nodales pour l’approche de l’objet-chanson, insistant notamment sur les dimensions intertextuelles et intermédiales des réécritures chansonnières, ainsi que sur l’aspect créatif que celles-ci peuvent acquérir dans des contextes socio-économiques et politiques spécifiques. Mettant en avant la dynamique ininterrompue des circulations de Titine en Europe centrale au XXe siècle, ainsi que le rôle central des intertextes français et américain dans l’élaboration et la réception de ces réécritures, l’article contribue à la mise en cause du caractère étanche et idéologiquement cohérent des constructions identitaires que les cartographies géopolitiques tendent nécessairement à fixer, par-delà les complexités mouvantes des écritures artistiques, y compris dans leur variante aréale
Les revues de sciences sociales à l’ère numérique
Authors: Cohen Évelyne , Goetschel Pascale , Guigonis Sandra , Matard-Bonucci Marie-Anne , Vapné Lisa , Parisot Thomas , Artières Philippe , Capdevila Élisa
Published: January 2024

La Revue d’Histoire culturelle (XVIIIe-XXIe siècles) invite à penser, à partir d’expériences multiples, les choix éditoriaux (positifs ou par défaut), les contraintes, les stratégies, les publics spécifiques, les modalités de lecture et d’écriture que les revues numériques induisent.
Listen to What Anatolia Is Saying for a Sustainable Future for All
Authors: Ayyildiz Pınar , Yilmaz Adem
Published: January 2024

This chapter intends to illustrate and get inspired by rituals and beliefs belonging to several societies and cultures rooted in Anatolia to facilitate students' understanding of what climate and climate change mean for local and global communities. In fact, the protection and the transfer of socio-cultural identities of local people and groups via assuring an intergenerational means of knowledge dissemination through oral communication/dialogues, observations, and participation will be both a meaningful and a purposeful act. With the help of activities like readings, on-site visits, storytelling, and portfolio work that can be integrated into the current program, the researchers attempt to welcome learners studying at high school as the key agents of the process to help develop pro-environmental values and related behaviors, as well as discussing the collective consciousness of the past and present civilizations of Anatolia, whilst embracing a non-Western outlook.
Wind Turbine Emulator Based on DC Motor
Authors: Boutahiri Chaymaâ , Nouaiti Ayoub , Bouazi Aziz , Marhraoui Hsaini Abdallah
Published: January 2024

Wind energy emerges as a promising solution for electricity generation, circumventing greenhouse gas emissions. However, the complexities of establishing wind energy conversion systems in a laboratory setting have spurred researchers to contemplate the utilization of wind turbine emulators. These latter afford the capability to accurately replicate the behavior of an actual wind turbine. In this chapter, an intricate description of the selected wind turbine emulator is provided, consisting of a DC motor regulated by a DC-DC buck converter. This converter is controlled by the PWM pulses generated by the wind turbine model. Proficient control of the DC motor allows electric sinusoidal voltage and current to be produced by the asynchronous generator in accordance with the adopted wind profile. Subsequently, the emulator undergoes rigorous implementation and thorough analysis within the MATLAB/Simulink environment to validate the efficiency of its system.
Quality Management, Tools, and Interactions
Authors: Bououchma Meryeme , Herrou Brahim
Published: January 2024

The primary goal of any organization or company is to guarantee good performances as far as all sectors are concerned in order to achieve operational excellence at all levels. This can only be achieved through the prior integration of the customer satisfaction function, in which the offer quality is considered as the main determinant. Thus, the launch of new complex and innovative products becomes necessary through developing new products or improving existing ones that meet specific customers' needs, since they have become more conscious and selective in the products they buy, while respecting the triptych cost quality time. In that context, the authors review three quality management tools that are widely used for that purpose—AF, QFD, and FMEA—before defining the advantages and disadvantages of each one, as well as relationships or potential interactions between them.
Business Involvements in Promotion of Sustainable Marketing
Authors: Mandal Pratap Chandra
Published: January 2024

Companies should ensure environmental sustainability and promote sustainable marketing in their business actions. The objective of the study is to analyze environmental sustainability and sustainable marketing and business actions in the promotion of sustainable marketing. The methodology adopted is a conceptual analysis of environmental sustainability, sustainable marketing, and business actions towards promotion of sustainable marketing. Various sustainable marketing principles including consumer-oriented marketing, customer value marketing, innovative marketing, sense-of-mission marketing, and societal marketing are discussed. Companies have roles and responsibilities towards promotion of sustainable marketing. They adopt different initiatives and strategies for promotion of sustainable marketing. The discussions will help academicians and practicing managers understand their roles and responsibilities towards environmental sustainability and sustainable marketing. Companies may incorporate sustainable marketing in their processes to achieve business excellence in the long run.
Data Analytics for Crop Productivity
Authors: Paul Subrata , Ghosh Shivnath , Maity Bhaskar
Published: January 2024

In the context of the Indian economy, the agriculture sector plays a pivotal role in providing livelihoods for a significant portion of the population. However, the sector faces several challenges, including dependence on the monsoon season for water, inadequate groundwater resources in certain areas, and a lack of crop-specific soil health knowledge. To address these challenges and provide comprehensive support to farmers, the government could establish a government-to-citizen (G2C) application that focuses on crop-specific water availability and soil health. The percentage contribution achieved through the proposed method defined in this chapter would vary depending on factors such as the adoption rate of the application, the accuracy of the data sources, and the effectiveness of the recommendations provided. However, it is plausible to expect a substantial positive impact on agricultural productivity, potentially leading to an increase in crop yields by a certain percentage.