bluuebunny/crossref_metadata_2025_split huggingface dataset:
Almost Commuting Scheme of Symplectic Matrices and Quantum Hamiltonian Reduction
Authors: Goyal Pallav 
Published: July 2024

AbstractLosev introduced the scheme X of almost commuting elements (i.e., elements commuting upto a rank one element) of $$\mathfrak {g}=\mathfrak {sp}(V)$$

g
=
sp
(
V
)

for a symplectic vector space V and discussed its algebro-geometric properties. We construct a Lagrangian subscheme $$X^{nil}$$

X

nil

of X and show that it is a complete intersection of dimension $$\text {dim}(\mathfrak {g})+\frac{1}{2}\text {dim}(V)$$

dim

(
g
)

+

1
2

dim

(
V
)

and compute its irreducible onents. We also study the quantum Hamiltonian reduction of the algebra $$\mathcal {D}(\mathfrak {g})$$

D
(
g
)

of differential operators on the Lie algebra $$\mathfrak {g}$$
g
tensored with the Weyl algebra with respect to the action of the symplectic group, and show that it is isomorphic to the spherical subalgebra of a certain rational Cherednik algebra of Type C. We contruct a category $$\mathcal {C}_c$$

C
c

of $$\mathcal {D}$$
D
-modules whose characteristic variety is contained in $$X^{nil}$$

X

nil

and construct an exact functor from this category to the category $$\mathcal {O}$$
O
of the above rational Cherednik algebra. Simple objects of the category $$\mathcal {C}_c$$

C
c

are mirabolic analogs of Lusztig’s character sheaves.
Immunotherapy in the Context of Aortic Valve Diseases
Authors: Bartoli-Leonard Francesca , Pennel Tim , Caputo Massimo 
Published: July 2024

Abstract
Purpose
Aortic valve disease (AVD) affects millions of people around the world, with no pharmacological intervention available. Widely considered a multi-faceted disease comprising both regurgitative pathogenesis, in which retrograde blood flows back through to the left ventricle, and aortic valve stenosis, which is characterized by the thickening, fibrosis, and subsequent mineralization of the aortic valve leaflets, limiting the anterograde flow through the valve, surgical intervention is still the main treatment, which incurs considerable risk to the patient.

Results
Though originally thought of as a passive degeneration of the valve or a congenital malformation that has occurred before birth, the paradigm of AVD is shifting, and research into the inflammatory drivers of valve disease as a potential mechanism to modulate the pathobiology of this life-limiting pathology is taking center stage. Following limited success in mainstay therapeutics such as statins and mineralisation inhibitors, immunomodulatory strategies are being developed. Immune cell therapy has begun to be adopted in the cancer field, in which T cells (chimeric antigen receptor (CAR) T cells) are isolated from the patient, programmed to attack the cancer, and then re-administered to the patient. Within cardiac research, a novel T cell–based therapeutic approach has been developed to target lipid nanoparticles responsible for increasing cardiac fibrosis in a failing heart. With clonally expanded T-cell populations recently identified within the diseased valve, their unique epitope presentation may serve to identify novel targets for the treatment of valve disease.

Conclusion
Taken together, targeted T-cell therapy may hold promise as a therapeutic platform to target a multitude of diseases with an autoimmune aspect, and this review aims to frame this in the context of cardiovascular disease, delineating what is currently known in the field, both clinically and translationally.
CSI-Otter: isogeny-based (partially) blind signatures from the class group action with a twist
Authors: Katsumata Shuichi , Lai Yi-Fu , LeGrow Jason T. , Qin Ling 
Published: July 2024

AbstractIn this paper, we construct the first provably-secure isogeny-based (partially) blind signature scheme. While at a high level the scheme resembles the Schnorr blind signature, our work does not directly follow from that construction, since isogenies do not offer as rich an algebraic structure. Specifically, our protocol does not fit into thelinear identification protocolabstraction introduced by Hauck, Kiltz, and Loss (EUROCYRPT’19), which was used to generically construct Schnorr-like blind signatures based on modules such as classical groups and lattices. Consequently, our scheme is provably secure in the random oracle model (ROM) against poly-logarithmically-many concurrent sessions assuming the subexponential hardness of the group action inverse problem. In more detail, our blind signature exploits thequadratic twistof an elliptic curve in an essential way to endow isogenies with a strictly richer structure than abstract group actions (but still more restrictive than modules). The basic scheme has public key size 128 B and signature size 8 KB under the CSIDH-512 parameter sets—these are the smallest among all provably secure post-quantum secure blind signatures. Relying on a newringvariant of the group action inverse problem ($$\textsf{rGAIP}$$rGAIP), we can halve the signature size to 4 KB while increasing the public key size to 512 B. We provide preliminary cryptanalysis of$${\textsf{rGAIP}} $$rGAIPand show that for certain parameter settings, it is essentially as secure as the standard$$\textsf{GAIP}$$GAIP. Finally, we show a novel way to turn our blind signature into a partially blind signature, where we deviate from prior methods since they require hashing into the set of public keys while hiding the corresponding secret key—constructing such a hash function in the isogeny setting remains an open problem.
Effect of soil additives on biogeochemistry of ultramafic soils—an experimental approach with Brassica napus L
Authors: Pędziwiatr Artur , Kierczak Jakub , Potysz Anna , Pietranik Anna 
Published: July 2024

AbstractUltramafic soils are characterized by low productivity due to the deficiency of macroelements and high content of Ni, Cr, and Co. Incorporation of ultramafic soils for agricultural and food production involves the use of fertilizers. Therefore, this study aims to find the soil additive that decreases the metallic elements uptake by plant using Brassica napus as an example. In this study, we evaluate the effect of manure (0.5 g N/kg of soil), humic acids (1 g of Rosahumus/1 dm3 H2O; 44% C), KNO3 (0.13 g K/kg of soil), lime (12.5 g/kg of soil), (NH4)2SO4 (0.15 g N/kg of soil), and Ca(H2PO4)2) (0.07 g P/kg of soil) on the phytoavailability of metallic elements. The effect of soil additives on metallic elements uptake by Brassica napus was studied in a pot experiment executed in triplicates. Statistical analysis was applied to compare the effects of additives in ultramafic soil on plant chemical composition relative to control unfertilized ultramafic soil (one-way ANOVA and Kruskal–Wallis test). The study shows that in almost all treatments, metallic elements content (Ni, Cr, Co, Al, Fe, Mn) is higher in roots compared to the aboveground parts of Brassica napus except for (NH4)2SO4, in which the mechanism of Mn accumulation is opposite. The main differences between the treatments are observed for the buffer properties of soil and the accumulation of specific metals by studied plants. The soils with the addition of lime and manure have the highest buffer properties in acidic conditions (4.9-fold and 2.1-fold increase relative to control soil, respectively), whereas the soil with (NH4)2SO4 has the lowest effect (0.8-fold decrease relative to control soil). Also, the addition of manure increases the biomass of aboveground parts of B. napus (3.4-fold increase) and decreases the accumulation of Ni (0.6-fold decrease) compared to plants cultivated in the control soil. On the contrary, the addition of (NH4)2SO4 noticeably increases the accumulation of Ni, Co, Mn, and Al in aboveground parts of B. napus (3.2-fold, 18.2-fold, 11.2-fold, and 1.6-fold, respectively) compared to plant grown in control soil, whereas the humic acids increase the accumulation of Cr in roots (1.6-fold increase). Therefore, this study shows that manure is a promising fertilizer in agricultural practices in ultramafic soil, whereas (NH4)2SO4 and humic acids must not be used in ultramafic areas.
Failure assessment of eccentric circular holes under compressive loading
Authors: Ferrian Francesco , Sapora Alberto , Estevez Rafael , Doitrand Aurélien 
Published: July 2024

AbstractThe present work aims to investigate the failure size effect on flattened disks containing an eccentric circular hole under mode I loading conditions. For this purpose, uniaxial compression tests are carried out on polymethyl methacrylate (PMMA) samples with holes. Depending on the hole radius and eccentricity, the energy release rate is either an increasing or decreasing function of the crack length, thus affecting the stability of crack propagation. Experimental results are interpreted and discussed through the coupled stress and energy criterion of Finite Fracture Mechanics. The approach lies on the assumption of a finite crack advance and it is implemented through the numerical estimation of the stress field and the Incremental Energy Release Rate functions. Finally, stability and crack speed propagation are discussed under the assumption of Linear Elastic Fracture Mechanics. Theoretical predictions reveal in agreement with experimental results thus demonstrating that the Coupled Criterion effectively captures the failure condition.
The socioeconomic gap in the development of Korean adolescents’ occupational aspirations while approaching the post-secondary transition
Authors: Yong Anna , Lee Sangwoo 
Published: July 2024

AbstractThis study longitudinally investigates the socioeconomic differentials in South Korean adolescents’ occupational aspiration development while they approach the post-secondary transition. It also takes into account the two-fold relation between socioeconomic status and academic performance in shaping occupational aspirations: mediation and interaction. Using the Korean Education and Employment Panel (KEEP), the study documents two main results. First, there exists a significant socioeconomic gap in Korean adolescents’ occupational aspirations which is neither widened nor narrowed over the transition period. Second, the relationship between socioeconomic status and academic performance is not limited to mediation but demonstrates a significant interaction in developing occupational aspirations.
A Structure-Preserving Semi-implicit IMEX Finite Volume Scheme for Ideal Magnetohydrodynamics at all Mach and Alfvén Numbers
Authors: Boscheri Walter , Thomann Andrea 
Published: July 2024

AbstractWe present a divergence-free semi-implicit finite volume scheme for the simulation of the ideal magnetohydrodynamics (MHD) equations which is stable for large time steps controlled by the local transport speed at all Mach and Alfvén numbers. An operator splitting technique allows to treat the convective terms explicitly while the hydrodynamic pressure and the magnetic field contributions are integrated implicitly, yielding two decoupled linear implicit systems. The linearity of the implicit part is achieved by means of a semi-implicit time linearization. This structure is favorable as second-order accuracy in time can be achieved relying on the class of semi-implicit IMplicit–EXplicit Runge–Kutta (IMEX-RK) methods. In space, implicit cell-centered finite difference operators are designed to discretely preserve the divergence-free property of the magnetic field on three-dimensional Cartesian meshes. The new scheme is also particularly well suited for low Mach number flows and for the incompressible limit of the MHD equations, since no explicit numerical dissipation is added to the implicit contribution and the time step is scale independent. Likewise, highly magnetized flows can benefit from the implicit treatment of the magnetic fluxes, hence improving the computational efficiency of the novel method. The convective terms undergo a shock-capturing second order finite volume discretization to guarantee the effectiveness of the proposed method even for high Mach number flows. The new scheme is benchmarked against a series of test cases for the ideal MHD equations addressing different acoustic and Alfvén Mach number regimes where the performance and the stability of the new scheme is assessed.
Portosystemic Hepatic Encephalopathy Scores (PHES) differ between Danish and German healthy populations despite their geographical and cultural similarities
Authors: Lauridsen Mette Munk , Grønkjær Lea Ladegaard , Atkins Jeppe Holm , Mikkelsen Stine Ulrik , Svensson Tintin , Kimer Nina , Hecker Hartmut , Berg-Beckhoff Gabriele , Weissenborn Karin , Vilstrup Hendrik 
Published: July 2024

AbstractMinimal hepatic encephalopathy (MHE) is common in liver cirrhosis and is identified by psychometric tests. The portosystemic hepatic encephalopathy score (PHES) is the most widely used and serves as an inter-study comparator. PHES has not been standardised for use in the Danish population, where German normal values have been applied until now based on the notion that the populations are comparable. This study aimed to evaluate if German PHES normal values can be applied in the Danish population and establish Danish normal values if needed. 200 Danish and 217 German healthy persons underwent Number Connection Test A and B (NCT), Line Tracing Test (LTT), Digit Symbol Test (DST), and Serial Dotting Test (SDT), and based on performance, PHES was calculated. German and Danish PHES performance declined with age in all subtests but more rapidly in Danes. Both German and Danish norms were impacted by gender and education, but to a different extent in the single tests of the test battery. Accordingly, there was a need for specific Danish normal values, which are presented here. Applying the new Danish normal values instead of the German in patients with cirrhosis yielded a lower percentage of out-of-norm performances (58% vs. 66%) and, hence, a lower prevalence of MHE. Danes and Germans perform differently on PHES, and therefore, normal German values cannot be used in Danish patients. Danish normal values are presented here and yield a lower number of ‘out of norm’ performances.
A computed tomography-based limit analysis approach to investigate the mechanical behavior of the human femur prone to fracture
Authors: Falcinelli Cristina , Pisano Aurora Angela , Vasta Marcello , Fuschi Paolo 
Published: July 2024

AbstractThe paper proposes a refined CT-based FE modelling strategy that implements a limit analysis numerical procedure, namely the Elastic Compensation Method (ECM), to estimate a lower bound to the collapse load of a human femur. In particular, the model geometry was obtained from CT images by segmentation of a fresh-frozen human cadaveric femur that was discretized with second-order tetrahedral 3D finite elements. A yield criterion of Tsai–Wu-type, expressed in principal stress space, was adopted to model the bone tissues for which the strength limit values in tension, compression and shear are computed locally from the femoral density distribution also derived from CT images. The developed CT-based numerical technique showed the ability to predict, at least for the examined femur for which the experimental collapse load is available, a lower bound to the collapse load. The proposed approach seems a promising and effective tool that could be adopted into clinical practice to predict the fracture risk of human femur starting from patient-specific data given by medical imaging.
Challenging by Cueing? An Investigation of Party and Leader Cueing Effects Across Mainstream and Challenger Party Voters
Authors: Torcal Mariano , Martini Sergio , Carty Emily 
Published: July 2024

Abstract
The emergence of new challenger parties calls for a reassessment of the party-model of opinion formation by examining different sources of cues across types of voters and the conditions that make cueing more effective. Although new challenger parties may lack sufficient time to develop identification with groups and distinctive party reputations, they may still provide effective cues and reduce their competitive disadvantage in developing affective social identity ties. This article investigates this argument by assessing the impact of party and leader cues on voters from mainstream and challenger parties and examining how expressive partisanship (partisan social identities) and instrumental partisanship (party competence evaluations) moderate these effects. Utilizing data from a survey experiment conducted in Spain during a period of party system restructuring, we find similar cueing effects across party and leader cues when comparing voters of both mainstream and challenger parties. Additionally, contrary to our expectations, we observe that cueing effects for mainstream party voters combine expressive and instrumental reasoning, while those for new challenger party voters are driven by perceptions of party competence reputation only. These findings challenge the prevailing belief that familiarity and time enhance cueing effects. They also deviate from socio-psychological approaches that emphasize the emotional and identity components of partisanship in strengthening cueing effects.
Model-Based Estimation of Small Area Dissimilarity Indexes: An Application to Sex Occupational Segregation in Spain
Authors: Bugallo María , Morales Domingo , Esteban María Dolores , Pagliarella Maria Chiara 
Published: July 2024

AbstractThis paper introduces a new statistical methodology for estimating Duncan dissimilarity indexes of occupational segregation by sex in administrative areas and time periods. Given that direct estimators of the proportion of men (or women) in the group of employed people for each occupational sector are not accurate enough in the considered estimation domains, we fit to them a three-fold Fay–Herriot model with random effects at three hierarchical levels. Based on the fitted area-level model, empirical best predictors of the cited proportions and Duncan segregation indexes are derived. A parametric bootstrap algorithm is implemented to estimate the mean squared error. Some simulation studies are included to show how the proposed predictors have a good balance between bias and mean squared error. Data from the Spanish Labour Force Survey are used to illustrate the performance of the new statistical methodology and to give some light about the current state of sex occupational segregation by province in Spain. Research claims that there is a sex gap that persists despite advances in the inclusion of women in the labour market in recent years and that is related to the unequal sharing of family responsabilities and the stigmas still present in modern societies.
Geologic Constraints on the Formation and Evolution of Saturn’s Mid-Sized Moons
Authors: Rhoden Alyssa Rose , Ferguson Sierra N. , Bottke William , Castillo-Rogez Julie C. , Martin Emily , Bland Michael , Kirchoff Michelle , Zannoni Marco , Rambaux Nicolas , Salmon Julien 
Published: July 2024

AbstractSaturn’s mid-sized icy moons have complex relationships with Saturn’s interior, the rings, and with each other, which can be expressed in their shapes, interiors, and geology. Observations of their physical states can, thus, provide important constraints on the ages and formation mechanism(s) of the moons, which in turn informs our understanding of the formation and evolution of Saturn and its rings. Here, we describe the cratering records of the mid-sized moons and the value and limitations of their use for constraining the histories of the moons. We also discuss observational constraints on the interior structures of the moons and geologically-derived inferences on their thermal budgets through time. Overall, the geologic records of the moons (with the exception of Mimas) include evidence of epochs of high heat flows, short- and long-lived subsurface oceans, extensional tectonics, and considerable cratering. Curiously, Mimas presents no clear evidence of an ocean within its surface geology, but its rotation and orbit indicate a present-day ocean. While the moons need not be primordial to produce the observed levels of interior evolution and geologic activity, there is likely a minimum age associated with their development that has yet to be determined. Uncertainties in the populations impacting the moons makes it challenging to further constrain their formation timeframes using craters, whereas the characteristics of their cores and other geologic inferences of their thermal evolutions may help narrow down their potential histories. Disruptive collisions may have also played an important role in the formation and evolution of Saturn’s mid-sized moons, and even the rings of Saturn, although more sophisticated modeling is needed to determine the collision conditions that produce rings and moons that fit the observational constraints. Overall, the existence and physical characteristics of Saturn’s mid-sized moons provide critical benchmarks for the development of formation theories.
Salient semantics
Authors: Reuter Kevin 
Published: July 2024

AbstractSemantic features are components of concepts. In philosophy, there is a predominant focus on those features that are necessary (and jointly sufficient) for the application of a concept. Consequently, the method of cases has been the paradigm tool among philosophers, including experimental philosophers. However, whether a feature is salient is often far more important for cognitive processes like memory, categorization, recognition and even decision-making than whether it is necessary. The primary objective of this paper is to emphasize the significance of researching salient features of concepts. I thereby advocate the use of semantic feature production tasks, which not only enable researchers to determine whether a feature is salient, but also provide a complementary method for studying ordinary language use. I will discuss empirical data on three concepts, conspiracy theory, female/male professor, and life, to illustrate that semantic feature production tasks can help philosophers (a) identify those salient features that play a central role in our reasoning about and with concepts, (b) examine socially relevant stereotypes, and (c) investigate the structure of concepts.
Comparing Functional Trend and Learning among Groups in Intensive Binary Longitudinal Eye-Tracking Data using By-Variable Smooth Functions of GAMM
Authors: Cho Sun-Joo , Brown-Schmidt Sarah , Clough Sharice , Duff Melissa C. 
Published: July 2024

AbstractThis paper presents a model specification for group comparisons regarding a functional trend over time within a trial and learning across a series of trials in intensive binary longitudinal eye-tracking data. The functional trend and learning effects are modeled using by-variable smooth functions. This model specification is formulated as a generalized additive mixed model, which allowed for the use of the freely available package (Wood in Package ‘mgcv.’ https://cran.r-project.org/web/packages/mgcv/mgcv.pdf, 2023) in . The model specification was applied to intensive binary longitudinal eye-tracking data, where the questions of interest concern differences between individuals with and without brain injury in their real-time language comprehension and how this affects their learning over time. The results of the simulation study show that the model parameters are recovered well and the by-variable smooth functions are adequately predicted in the same condition as those found in the application.