bluuebunny/crossref_metadata_2025_split huggingface dataset:
Survey on the Updated German S3 Guideline for Intensive Care in Cardiac Surgery Patients
Authors: Zajonz Thomas Simon , Habicher Marit , Böning Andreas , Heringlake Matthias , Ender Jörg , Markewitz Andreas , Brenck Florian , Sander Michael 
Published: March 2023

Abstract
Background The German guideline on intensive care treatment of cardiac surgical patients provides evidence-based recommendations on management and monitoring. It remains unclear if, respectively, to which degree the guidelines are implemented into the daily practice. Therefore, this study aims to characterize the implementation of guideline recommendations in German cardiac surgical intensive care units (ICUs).
Methods An internet-based online survey (42 questions, 9 topics) was sent to 158 German head physicians of cardiac surgical ICUs. To compare the effect over time, most questions were based on a previously performed survey (2013) after introduction of the last guideline update in 2008.
Results A total of n = 65 (41.1%) questionnaires were included. Monitoring changed to increased provision of available transesophageal echocardiography specialists in 86% (2013: 72.6%), SvO2 measurement in 93.8% (2013: 55.1%), and electroencephalography in 58.5% (2013: 2.6%). The use of hydroxyethyl starch declined (9.4% vs. 2013: 38.7%), gelatin 4% presented the most administered colloid with 23.4% (2013: 17.4%). Low cardiac output syndrome was primarily treated with levosimendan (30.8%) and epinephrine (23.1%), while norepinephrine (44.6%) and dobutamine (16.9%) represented the most favored drug combination. The main way of distribution was web-based (50.9%), with increasing impact on therapy regimens (36.9% vs. 2013: 24%).
Conclusion Changes were found in all questioned sectors compared with the preceding survey, with persisting variability between ICUs. Recommendations of the updated guideline have increasingly entered clinical practice, with participants valuing the updated publication as clinically relevant.
A novel T-shaped high-power waveguide phase shifter with continuous linear phase adjustment
Authors: Zhuang Qinghe , Xiong Zhengfeng , Yan Feng , Yang Meng , Liu Yingjun 
Published: March 2023

A novel T-shaped high-power waveguide phase shifter is investigated in this paper. The phase shifter consists of straight waveguides, four 90° H-bend waveguides, a stretching metal plate, and a metal spacer linked with the stretching metal plate. The entire structure for the phase shifter is symmetrical along both sides of the metal spacer. The phase-shifting principle for the phase shifter is to change the microwave transmission path by moving the stretching metal plate and then realize the linear phase adjustment. An optimal design approach of the phase shifter based on the boundary element method is described in detail. On this basis, a T-shaped waveguide phase shifter prototype with a center frequency of 9.3 GHz is designed. Simulation results show that the phase shifters can achieve 0°–360° linear phase adjustment by altering the distance of the stretched metal plate to 24 mm, and the efficiency of power transmission is more than 99.6%. In the meanwhile, experiments were conducted and the test results are in good agreement with simulation results. The return loss is more than 29 dB, and the insertion loss is less than 0.3 dB at 9.3 GHz in the entire phase-shifting range.
The unintentional body rotation with the Fukuda stepping test is not proportional to the number of steps
Authors: Paquet Nicole , Maheu Maxime 
Published: March 2023

Objective
This study was to compare the magnitude and variability of the unintended body rotation at the 20th and 50th step while performing the 50-step Fukuda stepping test (FST50) without and with modifications, i.e. restricted linear displacements and 30° head flexion.

Methods
Kinematic data previously collected from 14 and 20 healthy young adults were analyzed. Body rotation was extracted at the 20th step and the 50th step of the FST50 and the ratio between the two was calculated. The impact of test modifications on rotation was assessed with a two-way ANOVA for repeated measure and the variability of rotation was described with the coefficient of variation (CV).

Results
The ratio of rotation was 0.27 for the FST50 and 0.29 for the modified FST50. The CVs of rotation of were 57.9% and 65.0% at the 20th step and 79.7% and 81.8% at the 50th step for the FST50 and modified FST50, respectively. Modifications to the FST50 did not change the magnitude of rotation (p > .05).

Conclusion
The control of body rotation seems to progressively deteriorates during the FST50. From our results, it appears that a 20-step FST might not be a simple, proportional shortened version of the FST50.
Toward a “Both-And” Semiotics of Intersectionality: Raciolinguistics beyond White Settler-Colonial Situations
Authors: Babcock Joshua , Ke-Schutte Jay 
Published: March 2023

AbstractIn proposing a “both-and” semiotics of intersectionality, this special issue responds to recent timely studies of white supremacy, anti-Blackness, settler supremacy, and other oppressive systems undertaken by linguistic anthropologists and other critical scholars of language. Contributors to this issue turn our attention toward two pressing concerns that are at stake in the continued theorization of raciolinguistics: First, we insist that the conaturalization of language and race is flexible and expansive, not reductive, narrow, or epiphenomenal. Second, we situate our projects at what has until now been a point of breakdown in raciolinguistic discussions by examining and theorizing raciolinguistic ordering in situations that are reflexively positioned as lying beyond the white settler colonial.
A Raciosemiotics of Appropriation: Transnational Performance of Raciogender among Mexican K-Pop Fans
Authors: Yoo Joyhanna 
Published: March 2023

AbstractAdvancing a raciosemiotics (Smalls 2020) of appropriation, this article examines what happens when raciolinguistically charged signs circulate and are taken up in a context different to their production. Based on face-to-face and digital ethnography of K-pop fans in Mexico, this study presents a multimodal semiotic analysis of fans’ metapragmatic discourses and social media practices. I show how fans orient to the female K-pop idol, a mediatized figure of personhood (Agha 2005; Hiramoto and Kang 2017) indexical of hegemonic cosmopolitan femininity but simultaneously an exotic racialized Other in many non-Korean contexts. My examination of fan discourses and performance on social media treats the characterological figure of the female K-pop idol as a desirable, aspirational racial other for Mexican fans, while attending to the sociohistorical specificities of Asian racialization in the context of Mexico. The characterological figure is shaped by, and must interact with, local racial ideologies. My analysis suggests that such performances allow fans to differentiate themselves from other Mexican youth by demonstrating their knowledge of intra-Asian differences. Moreover, they are able to fashion neoliberal and queer subjectivities, albeit conditionally, through their indexical approximation of K-pop idols.
Three-body harmonic molecule
Authors: Olivares-Pilón H , Escobar-Ruiz A M , Molina F Montoya 
Published: March 2023

Abstract
In this study, the quantum three-body harmonic system with finite rest length R and zero total angular momentum L = 0 is explored. It governs the near-equilibrium S-states eigenfunctions

ψ
(

r

12

,

r

13

,

r

23

)

of three identical point particles interacting by means of any pairwise confining potential

V
(

r

12

,

r

13

,

r

23

)

that entirely depends on the relative distances

r

i
j

=

|

r

i

−

r

j

|

between particles. At R = 0, the system admits a complete separation of variables in Jacobi-coordinates, it is (maximally) superintegrable and exactly-solvable. The whole spectra of excited states is degenerate, and to analyze it a detailed comparison between two relevant Lie-algebraic representations of the corresponding reduced Hamiltonian is carried out. At R > 0, the problem is not even integrable nor exactly-solvable and the degeneration is partially removed. In this case, no exact solutions of the Schrödinger equation have been found so far whilst its classical counterpart turns out to be a chaotic system. For R > 0, accurate values for the total energy E of the lowest quantum states are obtained using the Lagrange-mesh method. Concrete explicit results with not less than eleven significant digits for the states

N
=
0
,
1
,
2
,
3

are presented in the range

0
⩽
R
⩽
4.0

a.u. In particular, it is shown that (I) the energy curve

E
=
E
(
R
)

develops a global minimum as a function of the rest length R, and it tends asymptotically to a finite value at large R, and (II) the degenerate states split into sub-levels. For the ground state, perturbative (small-R) and two-parametric variational results (arbitrary R) are displayed as well. An extension of the model with applications in molecular physics is briefly discussed.
Resonantly enhanced interatomic Coulombic electron capture in a system of three atoms
Authors: Remme S , Voitkiv A B , Müller C 
Published: March 2023

Abstract
In interatomic Coulombic electron capture, the capture of a free electron at an atomic center is accompanied by the radiationless transfer of the excess energy to a neighboring atom of different species, leading to ionization of the latter. We show that this interatomic process can be strongly enhanced by the presence of an additional third atom, provided the energy of the free-bound capture transition in the first atom is resonant to a dipole-allowed excitation energy in this assisting atom. The relation of the resonantly enhanced three-center electron capture with other processes is discussed, and its dependencies on the incident electron energy and the spatial geometry of the triatomic system are illustrated.
CP-odd and CP-even weak-basis invariants in the presence of vector-like quarks
Authors: Albergaria Francisco , Branco G C , Bastos José Filipe , Silva-Marcos J I 
Published: March 2023

Abstract
We propose a minimal set of weak-basis invariants in an extension of the standard model (SM) where one up-type isosinglet vector-like quark is introduced, which allows us to obtain all the physical content of the CKM matrix. We present CP-odd invariants of lower order in mass than the one in the SM, which may have important consequences for Baryogenesis. We study the ECL, where the two lightest generations have vanishing mass, showing that in this extension, contrary to the SM, CP violation can be observed in collisions much above the electroweak scale.
Intelligent fault diagnosis of planetary gearboxes under time-varying conditions based on dynamic adversarial balance adaptation with multi-label information confusion
Authors: Han Songjun , Feng Zhipeng 
Published: March 2023

Abstract
Intelligent diagnosis methods based on big data have been extensively applied in the fault diagnosis of rotating equipment such as planetary gearboxes. Most of these methods usually satisfy the condition of independent identically distribution among the training and diagnosis data. However, the data distribution in the actual diagnosis task struggles to satisfy the above conditions due to the lack of fault data, missing label information and the feature differences within different signals, thus increasing the difficulty of cross-condition fault diagnosis in small sample sets. Therefore, we propose a dynamic adversarial balance adaptation method with multi-label information confusion (MLC-DABA) for diagnosing planetary gearbox faults under time-varying conditions. In the signal preprocessing process, we transform the nonstationary timing signals into two-dimensional time-frequency matrices for the feature learning of networks, which avoids the frequency characteristic mess caused by frequency overlap. Moreover, we adopt a balance adaptation algorithm to dynamically evaluate the feature distribution between source and target tasks through the domain labels and category labels, thus establishing a balanced adaptation relationship between the feature distributions of both tasks. This dynamic adversarial training mechanism can tap more domain-invariant feature information to measure the distribution distance among tasks, thus closing the feature differences in different tasks and increasing the generalization of source tasks to the data distribution in target tasks. The proposed method is verified in planetary gearbox experiments. Experimental analysis results indicate that the diagnostic performance of MLC-DABA outperforms other comparison methods in terms of accuracy and training robustness.
Patient-specific Monte Carlo-based organ dose estimates in spiral CT via optical 3D body scanning and adaptation of a voxelized phantom dataset: proof-of-principle
Authors: Maddaloni Francesca Saveria , Sarno Antonio , Mettivier Giovanni , Clemente Stefania , Oliviero Caterina , Ricciardi Roberta , Varallo Antonio , Russo Paolo 
Published: March 2023

Abstract

Objective. We present a method for personalized organ dose estimates obtained before the computed tomography (CT) exam, via 3D optical body scanning and Monte Carlo (MC) simulations. Approach. A voxelized phantom is derived by adapting a reference phantom to the body size and shape measured with a portable 3D optical scanner, which returns the 3D silhouette of the patient. This was used as an external rigid envelope for incorporating a tailored version of the internal body anatomy derived from a phantom dataset (National Cancer Institute, NIH, USA) matched for gender, age, weight, and height. The proof-of-principle was conducted on adult head phantoms. The Geant4 MC code provided estimates of the organ doses from 3D absorbed dose maps in the voxelized body phantom. Main results. We applied this approach for head CT scanning using an anthropomorphic voxelized head phantom derived from 3D optical scans of manikins. We compared the estimates of head organ doses with those provided by the NCICT 3.0 software (NCI, NIH, USA). Head organ doses differed up to 38% using the proposed personalized estimate and MC code, with respect to corresponding estimates calculated for the standard (non-personalized) reference head phantom. Preliminary application of the MC code to chest CT scans is shown. Real-time pre-exam personalized CT dosimetry is envisaged with adoption of a Graphics Processing Unit-based fast MC code. Significance. The developed procedure for personalized organ dose estimates before the CT exam, introduces a new approach for realistic description of size and shape of patients via voxelized phantoms specific for each patient.
A novel algorithm to assess the quality of 12-lead ECG recordings: validation in a real telecardiology application
Authors: de Moraes Jermana L , Paixão Gabriela M M , Gomes Paulo R , Mendes Eduardo M A M , Ribeiro Antônio Luiz P , Beda Alessandro 
Published: March 2023

Abstract

Objective. Automatic detection of Electrocardiograms (ECG) quality is fundamental to minimize costs and risks related to delayed diagnosis due to low ECG quality. Most algorithms to assess ECG quality include non-intuitive parameters. Also, they were developed using data non-representative of a real-world scenario, in terms of pathological ECGs and overrepresentation of low-quality ECG. Therefore, we introduce an algorithm to assess 12-lead ECG quality, Noise Automatic Classification Algorithm (NACA) developed in Telehealth Network of Minas Gerais (TNMG). Approach. NACA estimates a signal-to-noise ratio (SNR) for each ECG lead, where ‘signal’ is an estimated heartbeat template, and ‘noise’ is the discrepancy between the template and the ECG heartbeat. Then, clinically-inspired rules based on SNR are used to classify the ECG as acceptable or unacceptable. NACA was compared with Quality Measurement Algorithm (QMA), the winner of Computing in Cardiology Challenge 2011 (ChallengeCinC) by using five metrics: sensitivity (Se), specificity (Sp), positive predictive value (PPV), F
2, and cost reduction resulting from adoption of the algorithm. Two datasets were used for validation: TestTNMG, consisting of 34 310 ECGs received by TNMG (1% unacceptable and 50% pathological); ChallengeCinC, consisting of 1000 ECGs (23% unacceptable, higher than real-world scenario). Main results. Both algorithms reached a similar performance on ChallengeCinC, although NACA performed considerably better than QMA in TestTNMG (Se = 0.89 versus 0.21; Sp = 0.99 versus 0.98; PPV = 0.59 versus 0.08; F
2 = 0.76 versus 0.16 and cost reduction 2.3 ± 1.8% versus 0.3 ± 0.3%, respectively). Significance. Implementing of NACA in a telecardiology service results in evident health and financial benefits for the patients and the healthcare system.
Experiments and non-linear MHD simulations of hot vertical displacement events in ASDEX-Upgrade
Authors: Schwarz N , Artola F J , Hoelzl M , Bernert M , Brida D , Giannone L , Maraschek M , Papp G , Pautasso G , Sieglin B , Zammuto I , Upgrade Team the ASDEX 
Published: March 2023

Abstract
Hot vertical displacement events (VDEs) are one of the worst case scenarios for high-current tokamaks as they are associated with large heat loads and electro-magnetic forces. Non-linear magneto-hydrodynamic (MHD) simulations of the thermal and current quench can help to understand their dynamics and consequences. In order to make predictions for future devices, the validation of codes against present machines is crucial. Dedicated experiments were performed in ASDEX Upgrade to provide a basis for simulations with the non-linear extended MHD code JOREK. 2D as well as non-axisymmetric simulations at realistic parameters can reproduce quantities like the edge safety factor q
95 at the thermal quench onset, the halo current magnitude and the level of vertical forces, while the exact width of the halo current area requires more sophisticated boundary conditions and is left for future work. Small horizontal forces are observed during the hot VDEs in the experiment as well as in the simulations.
Data-driven design and optimization of ultra-tunable acoustic metamaterials
Authors: Huo Jindong , Wang Yifei , Wang Ningzhen , Gao Wenqiang , Zhou Jierui , Cao Yang 
Published: March 2023

Abstract
This paper presents a data-driven design and optimization of acoustic metamaterials with three-phase materials for highly tunable wave transmission. The geometry of representative unitcell is defined by the trigonometric series function to describe an arbitrary shape with symmetry, which enables the unitcell to achieve a large sub-wavelength bandgap. We propose a lightweight and efficient algorithm, ‘decoupled gradient decent (DGD)’, to search for the optimal design and uncover the ‘best’ shape features—the interface curvature—in tuning the wave transmission. As a result, the host composite can partly overlap the individual cell’s bandgap and achieve a wide frequency gap that forbids wave transmission, namely a passive tunability. Another advantage of the trigonometric series designed shape is the high flexibility. A slight surface pressure obviously deforms the unitcell and shifts its band structure. Our simulation shows that a moderate pressure dramatically changes the frequency forbidding gap for both traversal and longitudinal wave transmissions, which indicates an active tunability. The surface deformation can be applied by either a mechanical pressure or external electric field if the composite uses a dielectric substrate. Therefore, this study opens a sandbox of manipulating wave transmission through the topology and structure optimization in applications such as seismic damping (Hz), noise insulating (kHz) and ultrasound imaging (MHz).
Toward improved loading, cooling, and trapping of molecules in magneto-optical traps
Authors: Langin T K , DeMille D 
Published: March 2023

Abstract
Recent experiments have demonstrated direct cooling and trapping of diatomic and triatomic molecules in magneto-optical traps (MOTs). However, even the best molecular MOTs to date still have density 10−5 times smaller than in typical atomic MOTs. The main limiting factors are: (i) inefficiencies in slowing molecules to velocities low enough to be captured by the MOT, (ii) low MOT capture velocities, and (iii) limits on density within the MOT resulting from sub-Doppler heating (Devlin and Tarbutt 2018 Phys. Rev. A 90 063415). All of these are consequences of the need to drive ‘Type-II’ optical cycling transitions, where dark states appear in Zeeman sublevels, in order to avoid rotational branching. We present simulations demonstrating ways to mitigate each of these limitations. This should pave the way toward loading molecules into conservative traps with sufficiently high density and number to evaporatively cool them to quantum degeneracy.
DFT study of efficient hydrogen storage on B12@Ca14 cage
Authors: Chen Yi-Sha , Guo Jing-Jing , Liu Peng-Bo , Zhao Hui-Yan , Wang Jing , Liu Ying 
Published: March 2023

Abstract
Hydrogen, as a zero-carbon energy carrier, has attracted considerable attention of scientific community. Therefore, the development of hydrogen storage materials has always been a hot topic. Currently, there have been numerous researches on hydrogen storage performance of boron nanostructures decorated by alkaline-Earth atoms. Here based on first-principles calculations, a core–shell B12@Ca14 structure with D
2h
symmetry has been proposed. Surprisingly, 14 Ca atoms in the metal shell of the B12@Ca14 structure can form a good package for B12 core without aggregation, thus forming a novel hydrogen storage material with all-metal atomic shell, which also provides a new idea for the research of hydrogen storage materials. Molecular dynamics simulation and vibration frequency analysis have been revealed the thermodynamic and kinetic stability of the B12@Ca14 structure. The analysis of binary system illustrates that the structure can be used as a building block for nano-assembly. For the hydrogen storage performance of the structure, the research results show that the B12@Ca14 structure can adsorb about 75 H2 molecules, with a high hydrogen storage mass density of 18.0 wt%. What’s more, non-covalent interaction analysis verifies that H2 molecules are adsorbed by weak interactions.