bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research on an improved model predictive current control for direct‐drive wave energy converters with linear generators
Authors: Huang Lei , Wei Lai , Liu Jing , Yang Jianlong , Zhang Xiaoyu 
Published: March 2023

AbstractThis paper deals with the current control strategy of a permanent magnet linear generator (PMLG) for a direct‐drive wave energy converter (DDWEC). As the mover is in a linear reciprocating motion, the reference of the controller of the generator is dynamic fluctuations with the mover movement under maximum power point tracking (MPPT) conditions. Therefore, the dynamic requirements of the controller become higher. To increase dynamic control performance, an improved model predictive current control (IMPCC) strategy is proposed here. Through a three‐step cascaded optimization algorithm, the target voltage vector is optimized from the three dimensions of the sector of the voltage vector, the angle of the voltage vector and the length of the voltage vector. The target voltage vector is output to the three‐phase rectifier by using SVPWM to complete the entire control process. Simulation and experimental results show that the proposed control strategy effectively reduces the current ripple and the vibration of PMLG and improves the stability of DDWEC.
Quelques enjeux pour les psychothérapies aujourd’hui
Authors: Bioy Antoine 
Published: March 2023

Les psychothérapies sont le « bras armé » de la psychopathologie, c’est-à-dire ce qui structure une action pour évaluer et intervenir auprès d’une personne en souffrance. Si quatre grandes familles sont bien connues (psychanalyse, thérapie cognitive-comporte-mentale, systémie, approche humaniste et existentielle), il existe des dizaines d’autres pratiques plus confidentielles, simplement moins anciennes, ou moins étudiées. Ces psychothérapies disent quelque chose du milieu socioculturel qui les a vu naitre, en même temps qu’elles évoluent avec lui. C’est cette « structure mouvante » sur lequel nous portons un regard dans cet article. Depuis les ambiguïtés inhérentes à la nature même d’une psychothérapie, jusqu’aux modifications actuelles autour notamment de processus tel que la transe. Ces ambiguïtés et les enjeux qu’ils dessinent imposent un peu plus des modalités d’évaluation des pratiques qui ne concernent pas que les chercheurs, mais aussi tout psychothérapeute désireux de mener correctement le mandat que son patient lui confie.
Hotspot Darmschleimhaut – Physiologie, Pathologie und Diagnostik
Authors: Rüffer Andreas 
Published: March 2023

SummaryDie Darmschleimhaut übernimmt zahlreiche vitale Funktionen, von der Nährstoffversorgung bis zur Barriere gegen potenzielle Schadstoffe. Störungen der Barrierefunktion („Leaky Gut“) wirken proinflammatorisch und können daher bei verschiedenen chronischen Erkrankungen beteiligt sein. Verschiedene Schleimhautmarker, insbesondere im Stuhl, liefern Hinweise auf den Zustand der Darmschleimhaut als Basis für gezielte therapeutische Maßnahmen.
Schwarzkümmelsamen: wirksam bei Allergien?
Authors: Chrubasik-Hausmann Sigrun 
Published: March 2023

SummarySchwarzkümmel wird traditionell gegen eine Vielzahl an Erkrankungen eingesetzt. Forschungsergebnisse weisen auf seine positiven Effekte bei Allergien, Asthma, Heuschnupfen und Ekzemen hin.
Systematic Review of Patient-Reported Outcomes and Complications of Pedicled Latissimus Flap Breast Reconstruction
Authors: Peshel Emanuela C. , McNary Claire M. , Barkach Catherine , Boudiab Elizabeth M. , Vega Daniella , Nossoni Farid , Chaiyasate Kongkrit , Powers Jeremy M. 
Published: March 2023

AbstractThe latissimus dorsi (LD) flap is a reliable option for breast reconstruction. This is particularly true in patients with contraindications to abdominally based autologous breast reconstruction. A systematic review of patient satisfaction and health related quality of life following LD breast reconstruction using the BREAST-Q survey was conducted. The scope of the review was to determine the degree of patient satisfaction following the procedure and to examine how patient satisfaction from the pedicled LD flap compares to other breast reconstructive procedures. A literature search on BREAST-Q in LD flap reconstruction was performed. Only articles written in English and in published peer-reviewed journals were included. Studies with less than 20 patients in their sample and those with a follow-up period of less than 1 year were excluded. Five articles representing 331 patients were reviewed, including one case–control study and four retrospective cohort studies. Level of evidence was either III (4) or IV (1). The average age was 53 with average body mass index of 25. Most reconstructions were delayed (67%) and unilateral (88%), and most patients required radiation (79%). The average length of follow-up was 36 months, and the response rate was 75%. Overall, patients who underwent LD flap reconstruction reported favorable outcomes in satisfaction domains and quality of life domains with few complications. A meta-analysis also demonstrated higher satisfaction in LD flap without implants compared with LD flap with implants. Patient-reported outcomes following LD breast reconstruction compare favorably with other techniques of breast reconstruction.
Bone Marrow Lesions in Athletic Stress Injuries: An Overview
Authors: Navas Ana , Kassarjian Ara 
Published: March 2023

AbstractThis article discusses the presumed pathophysiology of osseous sport-related stress changes, the optimal imaging strategy for detecting the lesions, and the progression of the lesions as seen on magnetic resonance imaging. It also describes some of the most common stress-related injuries in athletes by anatomical location and introduces some new concepts in the field.
Laparoscopic Retrieval of a 13-Year-Old Retained Iatrogenic Metallic Foreign Body from the Pelvis: An Uncommon Case Report
Authors: Rajput Deepak , Gupta Amit , Shasheendran Sruthi , Mani Rishit , Tandon Amoli , Krishnasamy Shyam Karuppusamy , Siddeek Rohik Anjum T. , Bhukya Krishna Sai , Edem Sanketh 
Published: March 2023

AbstractRetained surgical foreign bodies are unanticipated events culminating from inadvertent operating room errors and may cause severe medical and legal problems between the patient and the doctor. Here, we report detecting a surgical instrument fragment 13 years after an open abdominal hysterectomy in a quadragenarian during her evaluation of a month-old complaint of lower abdominal and right thigh pain. A computed tomography scan of the abdomen demonstrated a radio-opaque linear foreign body traversing the right obturator foramen with extension into the pelvis cranially and the adductor compartment of the right thigh caudally. The metallic foreign body, identified as a fragmented handle of a uterine tenaculum forceps with a slender sharp-tip hook, could be removed laparoscopically from the pelvis after a diagnostic laparoscopy, preventing significant complications. The minimally invasive approach enabled a smooth recovery, and the patient could go home on the second postoperative day.
Content analysis of research in the human-animal interaction bulletin (2013–2022)
Authors: Palmer Clarissa M. 
Published: March 2023

Abstract

Research in the field of human-animal interaction (HAI) has been growing exponentially as the field has been increasingly recognized as a valid empirical science. With the growth in research, the number of publishing opportunities has also expanded. To gain a greater understanding of the research activity in the articles published in the Human-Animal Interaction Bulletin (HAIB), a content analysis was conducted. Demographic variables of authors (gender, affiliation, geographical location, etc.), study participants (location, age, gender, condition, etc.), non-human study participants (species, breed, location, etc.), and research activity types (

Buboltz
et al
., 1999

) were examined to provide an overview of the state of research in HAI as viewed through the HAIB journal. Findings align with previous research identifying females as the predominant publishers in the field of HAI. Articles submitted by researchers in the United States, Australia, and Europe were most common. The study participants included children, college students, adults, and participants with medical conditions ranging from anxiety to loneliness. Last, research studies focusing on a combination of process and outcome activity were more prolific than articles focusing on either process or outcome activities alone.
The tensorial representation of the distributional stress–energy quadrupole and its dynamics
Authors: Gratus Jonathan , Talaganis Spyridon 
Published: March 2023

Abstract
We investigate stress–energy tensors constructed from the covariant derivatives of delta functions on a worldline. Since covariant derivatives are used all the components transform as tensors. We derive the dynamical equations for the components, up to quadrupole order. The components do, however, depend in a non-tensorial way, on a choice of a vector along the worldline. We also derive a number of important results about general multipoles, including that their components are unique, and all multipoles can be written using covariant derivatives. We show how the components of a multipole are related to standard moments of a tensor field, by parallelly transporting that tensor field.
Photon rings around warped black holes
Authors: Kapec Daniel , Lupsasca Alexandru , Strominger Andrew 
Published: March 2023

Abstract
The black hole photon ring is a prime target for upcoming space-based VLBI missions seeking to image the fine structure of astrophysical black holes. The classical Lyapunov exponents of the corresponding nearly bound null geodesics control the quasinormal ringing of a perturbed black hole as it settles back down to equilibrium, and they admit a holographic interpretation in terms of quantum Ruelle resonances of the microstate dual to the Kerr black hole. Recent work has identified a number of emergent symmetries related to the intricate self-similar structure of the photon ring. Here, we explore this web of interrelated phenomena in an exactly soluble example that arises as an approximation to the near-extremal Kerr black hole. The self-dual warped AdS3 geometry has a photon ring as well as

S
L

(
2
,

R

)

isometries and an exactly calculable quasinormal mode (QNM) spectrum. We show explicitly that the geometric optics approximation reproduces the eikonal limit of the exact scalar QNM spectrum, as well as the approximate ‘near-ring’ wavefunctions. The

S
L

(
2
,

R

)

isometries are directly related to the emergent conformal symmetry of the photon ring in black hole images but are distinct from a recently discussed conformal symmetry of the eikonal QNM spectrum. The equivalence of the classical QNM spectrum—and thus the photon ring—to the quantum Ruelle resonances in the context of a spacetime with a putative holographic dual suggests that the photon ring of a warped black hole is indeed part of the black hole hologram.
Relativistic liquids: GENERIC or EIT?
Authors: Gavassino L , Antonelli M 
Published: March 2023

Abstract
We study the GENERIC hydrodynamic theory for relativistic liquids formulated by Öttinger and collaborators. We use the maximum entropy principle to derive its conditions for linear stability (in an arbitrary reference frame) and for relativistic causality. In addition, we show that, in the linear regime, its field equations can be recast into a symmetric-hyperbolic form. Once rewritten in this way, the linearised field equations turn out to be a particular realisation of the Israel–Stewart theory, where some of the Israel–Stewart free parameters are constrained. This also allows us to reinterpret the GENERIC framework in view of the principles of extended irreversible thermodynamics and to discuss its physical relevance to model (possibly viscoelastic) fluids.
On global normal linear approximations for nonlinear Bayesian inverse problems
Authors: Nicholson Ruanui , Petra Noémi , Villa Umberto , Kaipio Jari P 
Published: March 2023

Abstract
The replacement of a nonlinear parameter-to-observable mapping with a linear (affine) approximation is often carried out to reduce the computational costs associated with solving large-scale inverse problems governed by partial differential equations (PDEs). In the case of a linear parameter-to-observable mapping with normally distributed additive noise and a Gaussian prior measure on the parameters, the posterior is Gaussian. However, substituting an accurate model for a (possibly well justified) linear surrogate model can give misleading results if the induced model approximation error is not accounted for. To account for the errors, the Bayesian approximation error (BAE) approach can be utilised, in which the first and second order statistics of the errors are computed via sampling. The most common linear approximation is carried out via linear Taylor expansion, which requires the computation of (Fréchet) derivatives of the parameter-to-observable mapping with respect to the parameters of interest. In this paper, we prove that the (approximate) posterior measure obtained by replacing the nonlinear parameter-to-observable mapping with a linear approximation is in fact independent of the choice of the linear approximation when the BAE approach is employed. Thus, somewhat non-intuitively, employing the zero-model as the linear approximation gives the same approximate posterior as any other choice of linear approximations of the parameter-to-observable model. The independence of the linear approximation is demonstrated mathematically and illustrated with two numerical PDE-based problems: an inverse scattering type problem and an inverse conductivity type problem.
Multi-stage Stern–Gerlach experiment modeled
Authors: Wang Lihong V 
Published: March 2023

Abstract
In the classic multi-stage Stern–Gerlach experiment conducted by Frisch and Segrè, the Majorana (Landau–Zener) and Rabi formulae diverge far from the experimental observation while the physical mechanism for electron-spin collapse remains unidentified. Here, introducing the physical co-quantum concept provides a plausible physical mechanism and predicts the experimental observation in absolute units without fitting (i.e. no parameters adjusted), with a p-value less than one per million, which is the probability that the co-quantum theory happens to match the experimental observation purely by chance. Further, the co-quantum concept is corroborated by exactly statistically reproducing the wave function, density operator, and uncertainty relation for electron spin in Stern–Gerlach experiments.
Reconfigurable broad-band rejection filter based on spoof surface plasmon polaritons
Authors: Lin Huan , Yu Jiabin , Xiao Binggang 
Published: March 2023

Abstract
In this paper, we describe a new approach for constructing a broad-band tunable rejection filter based on reconfigurable spoof surface plasmon polaritons (SSPP) whose center frequency can be tuned by altering the capacitance of a varactor diode. The filter structure is composed of SSPP waveguide with double split-rings. We have analyzed and discussed the dispersion characteristics of the filter unit structure and S-parameters of the filter. The filter’s rejection band can be tuned in real-time within the frequency range of 6.4 GHz–10.2 GHz, the rejection strength can reach a positive effect, and the transmission loss in the passband can also be less than 2 dB. When a varactor diode was loaded with the same capacitance, the filter produced one rejection band, and when the varactor diode was loaded with two sets of capacitances, the filter produced two rejection bands. From the results, the filter expands microwave communication possibilities. Furthermore, SSPP structures deliver better field confinement and more substantial field augmentation than standard approaches (microstrip filters), which is beneficial for many communication system applications.
Effects of Sn substitution on the microstructural and electromagnetic properties of MnZn ferrite for high-frequency applications
Authors: Wu Guohua , Yu Zhong , Guo Rongdi , Wang Zhiguang , Wang Hong , Hu Zhongqiang , Liu Ming 
Published: March 2023

Abstract
To achieve compact and lightweight power conversion devices, magnetic core materials such as MnZn ferrite are highly desired with low core losses at high frequencies above megahertz. In this work, high-valent Sn4+ ions were doped into MnZn ferrite to manipulate the electromagnetic properties and suppress the high-frequency core losses. The distribution of Sn4+ in MnZn ferrite was investigated by transmission electron microscopy with energy dispersive x-ray analysis, which indicated that most of the substituted Sn4+ ions remained at the grain boundaries rather than dissolving into the lattice, and thus greatly impacted the electromagnetic properties of MnZn ferrite. The initial permeability and saturation induction decreased monotonically with the Sn substitution. The core loss was reduced to 457 kW m−3 at 3 MHz, 30 mT, and 25 °C when the Sn substitution content was 0.003, due to the effective suppression of eddy current loss and residual loss. The sample with a Sn content of 0.003 exhibited excellent overall electromagnetic properties, which could be potentially useful in high-frequency transformers, converters, and power sources.
Hole doping induced ferromagnetism and Dzyaloshinskii–Moriya interaction in the two-dimensional group-IVA oxides
Authors: Li Peng , Ga Yonglong , Cui Qirui , Liang Jinghua , Yu Dongxing , Yang Hongxin 
Published: March 2023

Abstract
Based on the first-principles calculations, we examine the effect of hole doping on the ferromagnetism and Dzyaloshinskii–Moriya interaction (DMI) for PbSnO2, SnO2 and GeO2 monolayers. The nonmagnetic to ferromagnetic transition and the DMI can emerge simultaneously in the three two-dimensional IVA oxides. By increasing the hole doping concentration, we find the ferromagnetism can be strengthened for the three oxides. Due to different inversion symmetry breaking, isotropic DMI is found in PbSnO2, whereas anisotropic DMI presents in SnO2 and GeO2. More appealingly, for PbSnO2 with different hole concentrations, DMI can induce a variety of topological spin textures. Interestingly, a peculiar feature of synchronously switch of magnetic easy axis and DMI chirality upon hole doping is found in PbSnO2. Hence, Néel-type skyrmions can be tailored via changing hole density in PbSnO2. Furthermore, we demonstrate that both SnO2 and GeO2.with different hole concentrations can host antiskyrmions or antibimerons (in-plane antiskyrmions). Our findings demonstrate the presence and tunability of topological chiral structures in p-type magnets and open up new possibility for spintronics.
Lattice effects on the physical properties of half-doped perovskite ruthenates
Authors: Brar Jaskirat , Singh Saurabh , Kuga Kentaro , Sharma Priyamedha , M Bharath , Takeuchi Tsunehiro , Bindu R 
Published: March 2023

Abstract
We investigate the unusual phase transitions in SrRuO3 and Sr0.5Ca0.5Ru

1
−
x

Cr
x
O3 (x = 0, 0.05 and 0.1) employing x-ray diffraction, resistivity, magnetic studies and x-ray photoemission spectroscopy. Our results show the compounds undergo a crossover from itinerant ferromagnetism to localized ferromagnetism. The combined studies suggest Ru and Cr be in the 4+ valence state. A Griffith phase and an enhancement in Curie temperature (T

c
) from 38 K to 107 K are observed with Cr doping. A shift in the chemical potential towards the valence band is observed with Cr doping. In the metallic samples, interestingly, a direct link between the resistivity and orthorhombic strain is observed. We also observe a connection between orthorhombic strain and T

c
in all the samples. Detailed studies in this direction will be helpful to choose suitable substrate materials for thin-film/device fabrication and hence manoeuvre its properties. In the non-metallic samples, the resistivity is mainly governed due to disorder, electron-electron correlation effects and a reduction in the number of electrons at the Fermi level. The value of the resistivity for the 5% Cr doped sample suggests semi-metallic behaviour. Understanding its nature in detail using electron spectroscopic techniques could unravel the possibility of its utility in high-mobility transistors at room temperature and its combined property with ferromagnetism will be helpful in making spintronic devices.
Negative transverse magnetoresistance due to the negative off-diagonal mass in linear dispersion materials
Authors: Awashima Yudai , Fuseya Yuki 
Published: March 2023

Abstract
This study calculated the magnetoresistance (MR) in the Dirac electron system, Dresselhaus–Kip–Kittel (DKK) model, and nodal-line semimetals based on the semiclassical Boltzmann theory, with particular focus on the detailed energy dispersion structure. The negative off-diagonal effective-mass was found to induce negative transverse MR owing to the energy dispersion effect. The impact of the off-diagonal mass was more prominent in case of a linear energy dispersion. Further, Dirac electron systems could realize negative MR even if the Fermi surface was perfectly spherical. The obtained negative MR in the DKK model may explain the long-standing mystery in p-type Si.
Spatial nonlocality effect on the surface plasmon propagation in plasmonic nanospheres waveguide
Authors: Mir Moslem 
Published: March 2023

Abstract
Spatial nonlocality affects the plasmonic characteristics of nanostructures. We used the quasi-static hydrodynamic Drude model to obtain the surface plasmon excitation energies in various metallic nanosphere structures. The surface scattering and radiation damping rates were phenomenologically incorporated into this model. We demonstrate that spatial nonlocality increases the surface plasmon frequencies and total plasmon damping rates in a single nanosphere. This effect was amplified for small nanospheres and higher multipole excitation. In addition, we find that spatial nonlocality reduces the interaction energy between two nanospheres. We extended this model to a linear periodic chain of nanospheres. Then we obtain the dispersion relation of surface plasmon excitation energies using Bloch’s theorem. We also show that spatial nonlocality decreases the group velocities and energy decay lengths of the propagating surface plasmon excitations. Finally, we demonstrated that the effect of spatial nonlocality is significant for very small nanospheres separated by short distances.
Sizing of particles and droplets using 3D-PTV, an OpenPTV post-processing tool
Authors: de la Torre R G Ramirez , Jensen Atle 
Published: March 2023

Abstract
A methodology to obtain particle sizes from images was created, this tool can be used as a post-processing tool to the open source software OpenPTV. The proposed methodology uses the same images and information obtained during the 3D calibration of OpenPTV to estimate the real sizes of the observed particles. The objective of this paper is to introduce the followed methodology to create a sizing tool and validate the technique with different solid particles and water droplets. The method requires an extra calibration with a flat target containing circles of different sizes, but if the calibration is successful, the sizes of particles can be estimated reliably with a maximum relative error of 10%, as long as the particle diameter correspond to at least three pixels width in the obtained images.