bluuebunny/crossref_metadata_2025_split huggingface dataset:
544-nm Tb3+-doped LiYF4 laser pumped by 488-nm InGaN laser diodes and high peak power operation with cavity-dumped Q-switching
Authors: Kannari Fumihiko , Ishikawa Tomohiro , Tanaka Hiroki , Shioya Yuta , Yasuhara Ryo 
Published: November 2024

We report a 544-nm Tb3+-doped LiYF4 (Tb:YLF) laser pumped by two ∼488-nm, 2-W InGaN laser diodes in continuous-wave (CW) and cavity-dumped Q-switch operations. We obtained a CW output power of 482 mW with a slope efficiency of 43%. Cavity-dumped Q-switching generated 6-ns pulses with a pulse energy of 40 µJ at a repetition frequency of 100 Hz, resulting in the highest peak power of 6.7 kW ever reported for Tb3+-based lasers, to our knowledge. We analytically examined the influence of excited-state absorption and energy transfer upconversion on the small-signal gain of a Tb:YLF laser and concluded that their influence was negligible under our operating conditions.
Using polarization to estimate surface normals at air–water interfaces for correction of refraction in seafloor imaging
Authors: Peters Enno , Atkinson Gary A. , Stephan Maurice 
Published: November 2024

The retrieval of sea surface normal vectors using shape-from-polarization is investigated for the purpose of correcting for refraction at the water–air interface when imaging from above the water. In shallow clear water and overcast conditions, spectral longpass filtering (using a hard-coated 850 nm cut-on wavelength filter) is demonstrated to 1) avoid artifacts from the ground in the measured polarization state, and 2) reduce polarization from water-leaving radiance sufficiently to derive shape information exclusively from the polarization produced by specular reflection. The dependence of the method on meteorological conditions is studied. Measurements are performed with a commercial polarization filter array (PFA) camera. Due to the decreasing PFA efficiency towards the near-infrared, rigorous characterization and calibration measurements were performed and recommendations (e.g., on the f-number) elaborated. Overcoming the paraxial approximation, normal vectors are then retrieved with systematic errors of 0.1∘ (image center) to 0.5∘−0.8∘ (edges/corners) for a flat water surface. An image of the sea floor corrected for surface refraction shows maximum displacements of 10–20 pixels only (corresponding to 0.25∘) with respect to a validation image without water.
Dielectric microparticles for enhanced optical imaging: an FDTD analysis of contrast and resolution
Authors: Bekirov Arlen R. , Wang Zengbo , Luk’yanchuk Boris S. , Fedyanin Andrey A. 
Published: November 2024

This paper presents a comprehensive numerical analysis of super-resolution imaging using dielectric microparticles, employing the finite-difference time-domain (FDTD) method to elucidate the mechanisms that enable resolution enhancements beyond the diffraction limit. Our study demonstrates that dielectric microparticles can achieve a resolution of the order of 50 nm in the visible spectrum, surpassing traditional optical microscopy limits. By simulating the propagation of radiation through a microparticle–object system and generating optical images via a backward propagation technique, we reveal critical insights into how microparticles enhance image contrast and resolution. The study also explores the influence of various parameters, such as source coherence and particle–substrate interactions, on the image formation process. Our results not only validate the super-resolution capability of microparticle-assisted imaging but also provide a robust framework for further advancements in optical imaging technologies, with potential applications in fields requiring ultra-high-resolution visualization.
Slow-light effects of plasmon-induced transparency based on patterned graphene metasurfaces
Authors: Li Hongjian , Li Xiaoyan , Wu Yawen , Gao Enduo 
Published: November 2024

Enhancing light–matter interactions is particularly important in the field of micronano optics, which can be achieved through plasmon-induced transparency. A new type of metasurface consisting of a single layer of graphene is mainly investigated in the study. This structure is mainly composed of a graphene strip and two graphene blocks, generating plasmon-induced transparency at terahertz frequencies via weak coupling between the two bright modes. Furthermore, the time-domain finite-difference method (FDTD) and coupled-mode theory (CMT) are utilized to further explore the physical mechanism of PIT formation. By adjusting the Fermi level of graphene, the transmittance window of PIT can be effectively regulated, resulting in a reflectivity of more than 65% for this structure. Moreover, the influence of the graphene Fermi level on the slow-light effect was analyzed, and the group index was increased from 450 to 562 when the Fermi level of graphene was increased from 0.8 eV to 1.1 eV. The findings are important for the realization of multifunctional terahertz devices such as modulators and slow light.
Kleinian Singularities: Some Geometry, Combinatorics and Representation Theory
Authors: Bertsch Lukas , Gyenge Ádám , Szendrői Balázs 
Published: November 2024

AbstractWe review the relationship between discrete groups of symmetries of Euclidean three-space, constructions in algebraic geometry around Kleinian singularities including versions of Hilbert and Quot schemes, and their relationship to finite-dimensional and affine Lie algebras via the McKay correspondence. We focus on combinatorial aspects, such as the enumeration of certain types of partition-like objects, reviewing in particular a recently developed root-of-unity-substitution calculus. While the most complete results are in type $A$
A
, we also develop aspects of the theory in type $D$
D
, and end with some questions about the exceptional type $E$
E
cases.
The Afterlife of Sacrifice in the Kurdish Movement
Authors: Düzel Esin 
Published: November 2024

What happens when sacrifice is imagined in terms of a debt that can be repaid? In the ongoing conflict begun in 1984 between the Kurdistan Workers’ Party and the Turkish state, Kurdish revolutionary discourse has characterized death as the required price for liberation. After 2002, a shift away from revolutionary violence and an increase in civil politics with more diverse actors allowed for public recognition of sacrifice other than death. This ethnography in Diyarbakır conceptualizes “the afterlives of revolutionary sacrifice” to unearth the multiple temporalities of revolutionary struggle. Rather than viewing sacrifice through the lens of the revolutionary sacred, the article rethinks revolution through the vulnerabilities, relationships of care, and hopes that such temporalities entail. It highlights the afterlives of sacrifice to complicate the traditional narratives of heroism and martyrdom, sheds light on everyday struggles, affects, and relationships, and questions how we value sacrifice for political change.

ÖZET

Bedelin geri ödenebilecek bir karşılığı tahayyül edildiğinde ne olur? Kürdistan İşçi Partisi ile Türkiye devleti arasında 1984 yılında başlayan ve halen devam eden çatışmada, Kürt devrimci söylemi ölümü özgürlük için ödenmesi gereken bir bedel olarak nitelendirmiştir. 2002’den sonra devrimci şiddetten uzaklaşılması ve daha çeşitli aktörlerin yer aldığı sivil siyasetin oluşması, ölüm dışındaki bedellerin de kamuoyu tarafından görülmesini sağladı. Diyarbakır’da geçen bu etnografik çalışma, devrimci mücadelenin çoğul zamansallıklarını ortaya çıkarmak için «devrimci bedelin sonraki yaşamlarını» kavramsallaştırıyor. Makale, bedeli devrimci kutsalın merceğinden görmek yerine, devrimi bu tür zamansallıkların barındırdığı kırılganlıklar, ihtimam ilişkileri ve umutlar üzerinden yeniden düşünüyor. Geleneksel kahramanlık ve şehitlik anlatılarını karmaşıklaştırmak için bedelin sonraki yaşamlarını vurgulamakta, gündelik mücadelelere, duygulara ve ilişkilere ışık tutmakta ve siyasi değişim için bedel nasıl değer verdiğimizi sorgulamaktadır.

KURTE

Çi dibe dema bedêl wek deynekê tê xeyalkirin ku paşê dikaribe bê dayîn? Di şerê navbera Partiya Karkerên Kurdistanê û dewleta Tirkiyeyê de ku di 1984an de destpêkirî û hê jî berdewam e, gotara şoreşger a kurd mirinê wek bihayeke ji bo azadiyê lazim wesf kiriye. Piştî 2002yan, dûrketina ji şîdeta şoreşger û bi geşbûna siyaseta sivîl ya bi aktorên cihêtir, rê li ber vekir ku derveyî mirinê jî bedelên din ji aliyê raya giştî ve werin dîtin. Vê xebata etnografîk a li Diyarbekirê, ji bo derxistina holê ya pirhejmariya wextînî ya têkoşîna şoreşger, “jiyanên paşê yên bedêlên şoreşger” têgînî dike. Gotar, di dewsa dîtina bedêlê ya ji rojika pîroziya şoreşgerê de; şoreşê bi rêya şikestinbarî, têkiliyên îhtîmamê, hêviyên ku wextîniyên vî cureyî dihewînin ji nû ve difikire. Ji bo tevlîhevkirina vegotinên şehîdî û qehremaniyên kevneşopî, bal dikişîne ser jiyanên piştî bedêlê, ronî dide ser têkoşîn, hest û têkiliyên rojane û pirsiyar dike ka ji bo guherînên siyasî em çawa qîmet didin bedêlê.
Not all biases are created equal: how to deal with bias on laboratory measurements
Authors: Panteghini Mauro 
Published: November 2024

Abstract
Although the concept of bias appears consolidated in laboratory science, some important changes in its definition and management have occurred since the introduction of metrological traceability theory in laboratory medicine. In the traceability era, medical laboratories should rely on manufacturers who must ensure traceability of their in vitro diagnostic medical devices (IVD-MD) to the highest available references, providing bias correction during the trueness transfer process to calibrators before they are marketed. However, sometimes some bias can be observed arising from an insufficient correction during the traceability implementation. This source of bias can be discovered by the IVD-MD surveillance by traceability-based external quality assessment and confirmed by ad-hoc validation experiments. The assessment of significance should be based on its impact on measurement uncertainty (MU) of results. The IVD manufacturer, appropriately warned, is responsible to take an immediate investigation and eventually fix the problem with a corrective action. Even if IVD-MD is correctly aligned in the validation steps and bias components are eliminated, during ordinary use the system may undergo systematic variations such as those caused by recalibrations and lot changes. These sources of randomly occurring bias are incorporated in the estimate of intermediate reproducibility of IVD-MD through internal quality control and can be tolerated until the estimated MU on clinical samples fulfils the predefined specifications. A readjustment of the IVD-MD by the end-user must be undertaken to try to correct the bias becoming significant. If the bias remains, the IVD manufacturer should be requested to rectify the problem.
Applying Topic Modeling to Literary Analysis: A Review
Authors: Li Defeng , Wu Kan , Lei Victoria L.C. 
Published: November 2024

Abstract
This article examines the integration of topic modeling within literary studies, highlighting its potential to transform conventional literary analysis through computational techniques. It reviews the theoretical underpinnings underlying topic modeling, including prominent algorithms like Latent Dirichlet Allocation, Non-negative Matrix Factorization, and Neural Topic Models, and discuss their utility in dissecting large textual corpora to uncover latent thematic and stylistic patterns. The article subsequently addresses the specific methodological steps for effective implementation, spanning text preprocessing model tuning and result interpretation. We further illustrate the diverse applications of topic modeling in literary studies through thematic analysis, comparative studies, and the extraction of cultural and historical insights. Challenges such as model accuracy, technical limitations, and ethical considerations are critically assessed. The review concludes by envisioning prospective future directions that foresee enhanced integration of topic modeling into literary criticism, facilitated by technological and interdisciplinary advancements.
A novel de novo missense OTC mutation in an Iranian girl: a case report
Authors: Bahadoran Ensiyeh , Saffari Fatemeh , Ramezani Mehrzad , Moghbelinejad Sahar 
Published: November 2024

Abstract

Objectives
Ornithine transcarbamylase deficiency (OTCD) is the most common inborn error of the urea cycle, caused by mutations in the OTC gene located on the X chromosome. OTCD presents in early and late-onset forms, with variable severity. Despite the high genetic heterogeneity, genotype-phenotype correlations help in prognosis and treatment planning. This study presents a novel missense mutation in an Iranian girl with OTCD, occurring de novo, contributing to the understanding of the disease’s genetic landscape.

Case presentation
A 2-year-old girl from a consanguineous marriage presented with nausea, recurrent vomiting, and seizure. Elevated plasma ammonia, liver enzyme tests, and hepatomegaly suggested metabolic disorders. Following whole exome test, a novel heterozygous missense mutation in exon 7 of the OTC gene (c.674C>T) was identified in the patient. Despite maternal and paternal testing, no mutation was detected.

Conclusions
Identifying new mutations in populations helps mitigate the high mortality rates associated with OTCD hyperammonemic episodes and provides the best course of treatment, especially considering the diverse phenotypic variations.
System of degenerate parabolic p-Laplacian
Authors: Kim Sunghoon , Lee Ki-Ahm 
Published: November 2024

Abstract
In this article, we study the mathematical properties of the solution

u
=

(

u

1

,

…

,

u

k

)

{\bf{u}}=({u}^{1},\ldots ,{u}^{k})

to the degenerate parabolic system

u

t

=

∇

⋅

(

∣

∇

u

∣

p
−
2

∇

u

)

,

(

p
>
2

)

.

{{\bf{u}}}_{t}=\nabla \hspace{0.25em}\cdot \hspace{0.25em}({| \nabla {\bf{u}}| }^{p-2}\nabla {\bf{u}}),\hspace{1.0em}(p\gt 2).

More precisely, we show the existence and uniqueness of solution

u

{\bf{u}}

and investigate a priori

L

∞

{L}^{\infty }

boundedness of the gradient of the solution. Assuming that the solution decays quickly at infinity, we also prove that the component

u

l

{u}^{l}

,

(

1
≤
l
≤
k

)

(1\le l\le k)

, converges to the function

c

l

ℬ

{c}^{l}{\mathcal{ {\mathcal B} }}

in space as

t
→
∞

t\to \infty

. Here, the function

ℬ

{\mathcal{ {\mathcal B} }}

is the fundamental or Barenblatt solution of

p

p

-Laplacian equation, and the constant

c

l

{c}^{l}

is determined by the

L

1

{L}^{1}

-mass of

u

l

{u}^{l}

. The proof is based on the existence of entropy functional. As an application of the asymptotic large-time behaviour, we establish a Harnack-type inequality, which makes the size of the spatial average controlled by the value of the solution at one point.
Twist-tunable in-plane anisotropic polaritonic crystals
Authors: Capote-Robayna Nathaniel , Tresguerres-Mata Ana I. F. , Tarazaga Martín-Luengo Aitana , Terán-García Enrique , Martin-Moreno Luis , Alonso-González Pablo , Nikitin Alexey Y. 
Published: November 2024

Abstract
van der Waals (vdW) materials supporting phonon polaritons (PhPs) – light coupled to lattice vibrations – have gathered significant interest because of their intrinsic anisotropy and low losses. In particular, α-MoO3 supports PhPs with in-plane anisotropic propagation, which has been exploited to tune the optical response of twisted bilayers and trilayers. Additionally, various studies have explored the realization of polaritonic crystals (PCs) – lattices with periods comparable to the polariton wavelength. PCs consisting of hole arrays etched in α-MoO3 slabs exhibit Bragg resonances dependent on the angle between the crystallographic axes and the lattice vectors. However, such PC concept, with a fixed orientation and size of its geometrical parameters, constrains practical applications and introduces additional scattering losses due to invasive fabrication processes. Here, we demonstrate a novel PC concept that overcomes these limitations, enabling low-loss optical tuning. It comprises a rotatable pristine α-MoO3 layer located on a periodic hole array fabricated in a metallic layer. Our design prevents degradation of the α-MoO3 optical properties caused by fabrication, preserving its intrinsic low-loss and in-plane anisotropic propagation of PhPs. The resulting PC exhibits rotation of the Bloch modes, which is experimentally visualized by scanning near-field microscopy. In addition, we experimentally determine the polaritons momentum and reconstruct their band structure. These results pave the way for mechanically tunable nano-optical components based on polaritons for potential lasing, sensing, or energy harvesting applications.
Design and fabrication of robust hybrid photonic crystal cavities
Authors: Abulnaga Alex , Karg Sean , Mukherjee Sounak , Gupta Adbhut , Baldwin Kirk W. , Pfeiffer Loren N. , de Leon Nathalie P. 
Published: November 2024

Abstract
Heterogeneously integrated hybrid photonic crystal cavities enable strong light–matter interactions with solid state, optically addressable quantum memories. A key challenge to realizing high quality factor (Q) hybrid photonic crystals is the reduced index contrast on the substrate compared to suspended devices in air. This challenge is particularly acute for color centers in diamond because of diamond’s high refractive index, which leads to increased scattering loss into the substrate. Here, we develop a design methodology for hybrid photonic crystals utilizing a detailed understanding of substrate-mediated loss, which incorporates sensitivity to fabrication errors as a critical parameter. Using this methodology, we design robust, high-Q, GaAs-on-diamond photonic crystal cavities, and by optimizing our fabrication procedure, we experimentally realize cavities with Q approaching 30,000 at a resonance wavelength of 955 nm.
The salt crystal structure of etoricoxib hydrochloride, C18H16Cl2N2O2S
Authors: Ma Yu-Heng , Hong Wei-Pu , Qian Yan-Ling , Tao Zhen-Wei , Hou Shi-Qi , Guo Jia-Le , Ma Wen-Jing , Wang Yi-Hong 
Published: November 2024

Abstract
C18H16Cl2N2O2S, monoclinic, P21/c (no. 14), a = 10.915(2) Å, b = 11.801(2) Å, c = 14.059(3) Å, β = 90.10(3)°, V = 1810.9(6) Å3, Z = 4, R
gt(F) = 0.0585, wR
ref(F
2) = 0.1532, T = 293(2) K.
The cocrystal structure of praziquantel-hesperetin (1/1), C35H38N2O8
Authors: Han Wei , Li Mei , Geng Xiang , Zhang Guoshun 
Published: November 2024

Abstract
C35H38N2O8, monoclinic, P21 (no. 4), a = 14.0502(3) Å, b = 5.93007(14) Å, c = 18.3417(4) Å, β = 101.327(2)°, V = 1498.45(6) Å3, Z = 2, Rgt
(F) = 0.0443, wRref
(F
2) = 0.1082, T = 100(2) K.
Crystal structure of ethyl 4-(4-benzylpiperazin-1-yl)benzoate, C20H24N2O2
Authors: Zeng Xue , Feng Yuanjiao , Zhong Wenwu , Hou Yuanfang 
Published: November 2024

Abstract
C20H24N2O2, monoclinic, P21 (no. 4), a = 8.0021(9) Å, b = 5.9588(7) Å, c = 18.7274(19) Å, β = 93.546(7)°, V = 891.27(17) Å3, Z = 2, R

gt
(F) = 0.0408, wR

ref
(F
2) = 0.1208, T = 300 K.
Combining synergistic interaction and ion imprinting to improve adsorption capacity for selective uranium extraction from seawater
Authors: Mo Huilian , Chen Tao , Jiang Chao , Wang Ziyang , Meng Xiangjian , Wu Fei , Liu Wei , Chen Suwen 
Published: November 2024

Abstract
To ensuring the demand for uranium by utilizing unconventional uranium resources, the development of materials for selective capturing uranyl ions is increasingly important. Hence, the ion-imprinted polymer (IIP) based on specific binding sites was designed and prepared for selective enrichment of uranium from seawater. The existence of specific adsorption sites and the corresponding adsorption mechanism were confirmed by a series of experimental analyses and supported by density functional theory (DFT) calculations. Under the influence of seawater environment, the maximal uranium uptake of IIP reached 58.31 mg g−1. Significantly, the mass ratio of U and V (Sr or Ni) adsorbed by IIP was greater than 15, and the adsorption capacity did not change obviously after five cycles of use. The strategy combining ion imprinting and synergistic interaction is expected to improve uranium extraction performance.
Investigation of the radiation shielding efficiency of Bi2O3-doped borosilicate glasses
Authors: Al Huwayz Maryam , Almuqrin Aljawhara H. , Alharbi F.F. , Sayyed M.I. , Albarzan B. 
Published: November 2024

Abstract
In the present work, new borosilicate glasses were prepared to examine their radiation shielding characteristics, focusing on the role of increased Bi2O3 concentration on different radiation shielding parameters as determined by the Phy-X software. At 0.296 MeV, the mass attenuation coefficient was found to be 0.105 cm2/g for the free-Bi2O3 glass, and it increased to 0.266 cm2/g for the sample with 15 mol% Bi2O3. The linear attenuation coefficient (LAC) was investigated in the 0.0395–1.460 MeV energy range. The LAC was very high at the low energy range and a large LAC value variation was found between the free-Bi2O3 glass sample and those containing Bi2O3, which confirmed that Bi2O3 had a significant impact on the prepared glasses’ radiation shielding properties. The glasses’ effective atomic number (Zeff) was also examined, with the results showing an almost constant Zeff for the free-Bi2O3 glass sample, while the introduction of Bi2O3 caused a notable increase. At 0.0395 MeV, the Zeff value of sample Bi0B70 (free-Bi2O3) was 8.20, while it increased to 55.09, 66.08, and 70.98 with the addition of 5, 10, and 15 mol% Bi2O3.
Monetary Policy Uncertainty in the United States and Investment Sentiment in Advanced Economies
Authors: Azad Nahiyan Faisal , Serletis Apostolos 
Published: November 2024

Abstract
How does uncertainty originating from the future path taken by monetary policy enacted by the Federal Reserve in the United States affect the business confidence in other advanced economies? Does US monetary policy uncertainty affect economic activity in the United States and in Canada, France, Germany, Italy, Japan, and the United Kingdom. Motivated to answer these questions, we use monthly data and a bivariate GARCH-in-Mean VAR model. We also use a multivariate structural VAR model and a different measure of US monetary policy uncertainty, achieving identification by a combination of short-run and long-run restrictions. Our evidence shows that US monetary policy uncertainty, irrespective of how it is measured, has negative effects on the business confidence and output in the advanced G7 economies.
Mach–Zehnder carbon monoxide gas sensor based on tin dioxide coated endlessly single-mode photonic crystal fiber
Authors: Chen Cui , Feng Wenlin , Yang Xiaozhan , Ullah Arif 
Published: November 2024

Abstract
A Mach–Zehnder interference (MZI) carbon monoxide gas sensor based on tin dioxide-coated single-mode photonic crystal fiber (ESPCF) was constructed. Using the collapse fusion method, a piece of tin dioxide-coated ESPCF is embedded between the two ends of the seven-core fiber (SCF) to form an SCF-ESPCF-SCF optic-fiber sensor with an MZI sensing structure. To examine the properties of the sensing layer, including its crystalline structure, elemental makeup, and surface appearance, we utilized XRD for diffraction studies, XPS for compositional analysis, and SEM for morphology imaging. The outcomes confirm the successful synthesis of the tin dioxide sensing material, with the formation of a uniform morphology, coating approximately 1.5 μm in thickness on the fiber’s surface. Notably, the sensor exhibits a sensitivity to carbon monoxide of 0.01696 dB/ppm, with activation and reset durations being 60 s and 72 s, correspondingly. The sensor demonstrates high sensitivity, strong selectivity, a favorable linear response, and stability, rendering it highly efficacious for the environmental monitoring of toxic carbon monoxide gas.