bluuebunny/crossref_metadata_2025 huggingface dataset:
Multi-messenger study of merging massive black holes in the OBELISK simulation: Gravitational waves, electromagnetic counterparts, and their link to galaxy and black-hole populations
Authors: Dong-Páez Chi An , Volonteri Marta , Beckmann Ricarda S. , Dubois Yohan , Mangiagli Alberto , Trebitsch Maxime , Vergani Susanna D. , Webb Natalie A.
Published: June 2023

Massive black-hole (BH) mergers are predicted to be powerful sources of low-frequency gravitational waves (GWs). Coupling the detection of GWs with an electromagnetic (EM) detection can provide key information about merging BHs and their environments as well as cosmology. We study the high-resolution cosmological radiation-hydrodynamics simulation OBELISK, run to redshift z = 3.5, to assess the GW and EM detectability of high-redshift BH mergers, modelling spectral energy distribution and obscuration. For EM detectability, we further consider sub-grid dynamical delays in postprocessing. We find that most of the merger events can be detected by LISA, except for high-mass mergers with very unequal mass ratios. Intrinsic binary parameters are accurately measured, but the sky localisation is poor generally. Only ∼40% of these high-redshift sources have a sky localisation better than 10 deg2. Merging BHs are hard to detect in the restframe UV since they are fainter than the host galaxies, which at high redshift are star-forming. A significant fraction, 15–35%, of BH mergers instead outshine the galaxy in X-rays, and about 5 − 15% are sufficiently bright to be detected with sensitive X-ray instruments. If mergers induce an Eddington-limited brightening, up to 30% of sources can become observable. The transient flux change originating from such a brightening is often large, allowing 4 − 20% of mergers to be detected as EM counterparts. A fraction, 1 − 30%, of mergers are also detectable at radio frequencies. Transients are found to be weaker for radio-observable mergers. Observable merging BHs tend to have higher accretion rates and masses and are overmassive at a fixed galaxy mass with respect to the full population. Most EM-observable mergers can also be GW-detected with LISA, but their sky localisation is generally poorer. This has to be considered when using EM counterparts to obtain information about the properties of merging BHs and their environment.
Damping of coronal oscillations in self-consistent 3D radiative magnetohydrodynamics simulations of the solar atmosphere
Authors: Kohutova P. , Antolin P. , Szydlarski M. , Carlsson M.
Published: June 2023

Context. Oscillations are abundant in the solar corona. Coronal loop oscillations are typically studied using highly idealised models of magnetic flux tubes. In order to improve our understanding of coronal oscillations, it is necessary to consider the effect of a realistic magnetic field topology and the density structuring.

Aims. We analyse the damping of coronal oscillations using a self-consistent 3D radiation-magnetohydrodynamics simulation of the solar atmosphere spanning from the convection zone into the corona, the associated oscillation dissipation and heating, and finally, the physical processes that cause the damping and dissipation. The simulated corona that forms in this model does not depend on any prior assumptions about the shape of the coronal loops.

Methods. We analysed the evolution of a bundle of magnetic loops by tracing the magnetic field.

Results. We find that the bundle of magnetic loops shows damped transverse oscillations in response to perturbations in two separate instances, with oscillation periods of 177 s and 191 s, velocity amplitudes of 10 km s−1 and 16 km s−1, and damping times of 176 s and 198 s. The coronal oscillations lead to the development of velocity shear in the simulated corona, which results in the formation of vortices seen in the velocity field that are caused by the Kelvin-Helmholtz instability. This contributes to the damping and dissipation of the transverse oscillations.

Conclusions. The oscillation parameters and evolution we observed are in line with the values that are typically seen in observations of coronal loop oscillations. The dynamic evolution of the coronal loop bundle suggests that the models of monolithic and static coronal loops with constant lengths might need to be re-evaluated by relaxing the assumption of highly idealised wave guides.
L’accès collectif au foncier irrigué à Ross Béthio, Sénégal : entre inégalités de genre et dynamiques de pouvoir entre femmes
Authors: Coulibaly Oumoul Khaïry
Published: June 2023

Cet article a pour objectif d’évaluer l’efficacité de l’accès collectif à la terre pour améliorer les droits fonciers des femmes dans un contexte d’agriculture irriguée dans le delta du fleuve Sénégal. L’expérience des périmètres irrigués villageois aménagés pour les femmes des groupements de l’Union des femmes productrices de Ross Béthio, constitue notre cadre d’étude. Les résultats révèlent l’existence d’un mouvement associatif féminin capable de porter les revendications des femmes ; ils mettent aussi en exergue les capacités d’influence de femmes leaders que ce mouvement a fait émerger. Cependant, ils montrent aussi l’ambiguïté de l’action collective féminine et l’entrecroisement intersectionnel des inégalités de genre et de statut social qui favorisent la monopolisation des ressources collectives par une minorité, accentuant ainsi la vulnérabilité des femmes les plus marginalisées en termes d’accès au foncier irrigué.
Semi-discretization and full-discretization with improved accuracy for charged-particle dynamics in a strong nonuniform magnetic field
Authors: Wang Bin , Jiang Yaolin
Published: June 2023

The aim of this paper is to formulate and analyze numerical discretizations of charged-particle dynamics (CPD) in a strong nonuniform magnetic field. A strategy is firstly performed for the two dimensional CPD to construct the semi-discretization and full-discretization which have improved accuracy. This accuracy is improved in the position and in the velocity when the strength of the magnetic field becomes stronger. This is a better feature than the usual so called ``uniformly accurate methods”. To obtain this refined accuracy, some reformulations of the problem and two-scale exponential integrators are incorporated, and the improved accuracy is derived from this new procedure. Then based on the strategy given for the two dimensional case, a new class of uniformly accurate methods with simple scheme is formulated for the three dimensional CPD in maximal ordering case. All the theoretical results of the accuracy are numerically illustrated by some numerical tests.
L’alliance thérapeutique : vers un nouveau paradigme des facteurs communs en psychothérapie
Authors: Marteau-Chasserieau Fanny
Published: June 2023

Introduction : Le développement des psychothérapies s’est accompagné d’une recherche assidue concernant l’évaluation de leur efficience. Les grands modèles psychothérapiques ayant montré leur efficacité, l’accent se porte, dès lors sur la compréhension de cette efficience et sur l’identification des facteurs communs aux thérapies, telle l’alliance thérapeutique qui serait prédictive de celle-ci (Castonguay, 1993; Norcross & Lambert, 2019; Wampold, 2017). Méthode : Nous proposons ici une revue de la littérature, afin d’établir l’état de la recherche concernant ce nouveau paradigme des facteurs communs qui offre une compréhension novatrice du processus d’évolution thérapeutique. Résultats et discussions : L’alliance thérapeutique est définie par le lien affectif s’instaurant entre le thérapeute et le patient, ainsi que par la collaboration entre les deux partenaires sur la définition des objectifs et des techniques de la thérapie. Cette conceptualisation de l’alliance paraît la plus pertinente, car elle positionne la psychothérapie comme un acte professionnel selon une méthodologie propre (Brennstuhl & Marteau-Chasserieau, 2021). Certaines caractéristiques du thérapeute et du patient exercent également une influence significative sur le niveau d’alliance et le devenir de la thérapie (Duncan et al., 2012; Wampold & Brown, 2005). Certains thérapeutes seraient plus efficaces que leurs confrères et obtiendraient de meilleurs résultats indépendamment du modèle thérapeutique utilisé (Baldwin et al., 2007; Wampold, 2001). Le paradigme des facteurs communs permettant d’explorer les processus à l’œuvre au sein des psychothérapies semble prometteur et offre une belle opportunité de collaborations entre cliniciens et chercheurs pour comprendre l’efficacité des psychothérapies.
Impact de la réalité externe sur la relation psychothérapeute/patient, une recherche qualitative
Authors: Nassif Rose Marie , El Husseini Mayssa , Moro Marie-Rose
Published: June 2023

La pandémie, la crise économique et d’autres perturbations collectives ont créé un environnement tendu et incertain pour les psychothérapeutes et les patients dans de nombreux pays du monde. Ces différentes crises ont forcé les psychothérapeutes et les psychanalystes à faire des réaménagements psychiques et d’espace, pour continuer à travailler avec leurs patients et pour engager de nouvelles prises en charge.

Une recherche internationale en collaboration avec des universités en France, au Liban et au Brésil, est menée pour explorer l’interférence de la réalité commune potentiellement traumatique sur la relation thérapeutique et le cadre.

Cette recherche qualitative est conçue sur les principes de l’analyse phénoménologique interprétative (Smithet al.,2009). 40 entretiens semi-structurés sont menés avec des participants (psychologues et psychiatres) de France, Liban, Italie, USA et Brésil.

La durée moyenne des entretiens est de 90 minutes. Les entretiens sont enregistrés, retranscrits et analysés par deux chercheurs puis soumis à une validation inter-juridique. Trois thèmes ont émergé des résultats préliminaires :

Les frontières à l’épreuve.

L’identité professionnelle mise à mal.

L’impact traumatique et résurgences traumatiques.

Cette recherche met en lumière la capacité de créativité des thérapeutes dans un contexte traumatique. Les résultats nous permettront de fournir des indications importantes sur les activités et les formations à mettre en place pour aider les psychothérapeutes à travailler, élaborer et réfléchir dans des conditions de stress sévère qu’ils partagent avec leurs patients.
Présence et évasion : l’hypnothérapie en milieu carcéral
Authors: Chevance Justine , Perrot Marion , Bioy Antoine , Chahraoui Khadija
Published: June 2023

Un psychologue clinicien au sein d’un établissement pénitentiaire exerce dans un contexte bien loin de celui du soin, ce qui nécessite des aménagements thérapeutiques. L’introduction de l’hypnose dans notre pratique carcérale nous a permis d’ouvrir des espaces pour le patient comme pour le thérapeute. Pourtant il n’est pas si simple de faire de l’hypnose avec les détenus, la relation à autrui étant en effet problématique pour beaucoup. La rencontre avec Léo, un jeune homme d’une vingtaine d’années, diagnostiqué psychopathe et incarcéré pour assassinat a permis l’émergence de ce travail de recherche et de construire notre posture de clinicien-chercheur. Au fil de cette rencontre ancrée dans la réalité carcérale, nous avons pensé un dispositif innovant : la transe musicale. C’est au travers de cette authentique expérience clinique que nous avons élaboré une méthodologie afin d’évaluer cette prise en charge créative auprès de patients psychopathes incarcérés.
Le télescopage des traumatismes : l’agir violent à l’adolescence et les aléas de la transmission générationnelle inconsciente
Authors: Hanifi Mina , Roman Pascal
Published: June 2023

Cet article investigue les enjeux de l’agir violent à l’adolescence en le considérant dans une perspective inter et transubjective. Il s’intéresse spécifiquement aux aléas de la transmission générationnelle inconsciente et aux enjeux d’un télescopage des traumatismes aliénant les éprouvés traumatiques des différentes générations. Pour ce faire, des adolescents en situation de migration ont été rencontrés avec la médiation de deux outils projectifs (Rorschach et TAT). Les répercussions de la transmission générationnelle inconsciente sur le processus de subjectivation ont été mises en lumière par l’étude de la qualité de la construction des trois instances idéales, le Moi idéal, l’Idéal du Moi et le Surmoi, et de l’articulation entre ces instances. Cette recherche met en évidence que l’agir violent à l’adolescence témoigne d’une transmission générationnelle en souffrance et met en lumière la manière dont la rencontre du traumatisme pubertaire avec les états traumatiques antérieurement vécus met en péril les processus de subjectivation.
Underwater cap-suction pseudopolyp formation for endoscopic mucosal resection: a simple technique for treating flat, appendiceal orifice or ileocecal valve colorectal lesions
Authors: Uchima Hugo , Calm Anna , Muñoz-González Raquel , Caballero Noemí , Rosinach Mercé , Marín Ingrid , Colán-Hernández Juan , Iborra Ignacio , Castillo-Regalado Edgar , Temiño Rocío , Mata Alfredo , Turró Román , Espinós Jorge , Moreno De Vega Vicente , Pellisé Maria
Published: June 2023

Background We aimed to evaluate the safety and technical success of an easy-to-use technique that applies underwater cap suction pseudopolyp formation to facilitate the resection of flat lesions or those at the appendiceal orifice or ileocecal valve.

Methods We retrospectively analyzed a register of consecutive cap suction underwater endoscopic mucosal resection (CAP-UEMR) procedures performed at two centers between September 2020 and December 2021. Procedures were performed using a cone-shaped cap, extending 7 mm from the endoscope tip, to suction the lesion while submerged underwater, followed by underwater snare resection. Our primary end point was technical success, defined as macroscopic complete resection.

Results We treated 83 lesions (median size 20 mm; interquartile range [IQR] 15–30 mm) with CAP-UEMR: 64 depressed or flat lesions (18 previously manipulated, 9 with difficult access), 11 from the appendix, and 8 from the ileocecal valve. Technical success was 100 %. There were seven intraprocedural bleedings and two delayed bleedings, all managed endoscopically. No perforations or other complications occurred. Among the 64 lesions with follow-up colonoscopy, only one recurrence was detected, which was treated endoscopically.

Conclusions CAP-UEMR was a safe and effective technique for removing nonpolypoid colorectal lesions, including those arising from the appendiceal orifice or ileocecal valve.
Synthesis of Quinoline and Quinolin-2(1H)-one Derivatives via Nickel Boride Promoted Reductive Cyclization
Authors: Bera Mrinal K. , Sarkar Rumpa , Samanta Surya Kanta , Menon Anila M. , Chopra Deepak , Ganguly Debabani
Published: June 2023

A mild and efficient approach for the synthesis of diversely substituted quinoline and quinolin-2-one derivatives is disclosed. In situ generated nickel boride proved to be an effective promoter of the reductive cyclization reaction. Broad substrate scope, mild reaction conditions, consistent yield, and a wide range of functional group tolerance are the other notable features of the newly discovered reaction. A large number of quinoline and quinolin-2-one derivatives may be prepared from milligram to multigram scale employing this intramolecular reductive cyclization protocol.
Age-Related Changes in Temporal Binding Involving Auditory and Vestibular Inputs
Authors: Malone Alexander K. , Hungerford Michelle E. , Smith Spencer B. , Chang Nai-Yuan N. , Uchanski Rosalie M. , Oh Yong-Hee , Lewis Richard F. , Hullar Timothy E.
Published: June 2023

Maintaining balance involves the combination of sensory signals from the visual, vestibular, proprioceptive, and auditory systems. However, physical and biological constraints ensure that these signals are perceived slightly asynchronously. The brain only recognizes them as simultaneous when they occur within a period of time called the temporal binding window (TBW). Aging can prolong the TBW, leading to temporal uncertainty during multisensory integration. This effect might contribute to imbalance in the elderly but has not been examined with respect to vestibular inputs. Here, we compared the vestibular-related TBW in 13 younger and 12 older subjects undergoing 0.5 Hz sinusoidal rotations about the earth-vertical axis. An alternating dichotic auditory stimulus was presented at the same frequency but with the phase varied to determine the temporal range over which the two stimuli were perceived as simultaneous at least 75% of the time, defined as the TBW. The mean TBW among younger subjects was 286 ms (SEM ± 56 ms) and among older subjects was 560 ms (SEM ± 52 ms). TBW was related to vestibular sensitivity among younger but not older subjects, suggesting that a prolonged TBW could be a mechanism for imbalance in the elderly person independent of changes in peripheral vestibular function.
Urteil zu KHZG-Ausschreibungen: Entlassmanagement muss eigenständig ausgeschrieben werden
Authors: Kühn Matthias
Published: June 2023

Bei der Ausschreibung eines Patientenportals müssen Kliniken darauf achten, das digitale Entlassmanagement getrennt davon auszuschreiben. Die Vergabekammer Nordbayern hat hierzu in einem aktuellen Fall entschieden.
Chefsache Einkauf: Materialströme sind meist viel relevanter für den Erfolg eines Krankenhauses als vermutet
Authors: Schlüchtermann Jörg , Krakau Cosima
Published: June 2023

Einkauf und Logistik sollten auf der Agenda von Krankenhausgeschäftsführungen eine hohe Priorität haben. Denn nur mit professionellen Materialströmen können die Leistungen für die Patienten mit Erfolg erbracht werden.
Technische Logistik: Zukünftige Potenziale automatisierter Logistiksysteme im Krankenhaus
Authors: Kriegel Johannes
Published: June 2023

Die Intralogisitk im Krankenhaus wird aktuell noch durch einen ausgeprägten Personaleinsatz bestimmt. Im Vergleich zu anderen Branchen sowie unter dem Einfluss zunehmender Personalknappheit ergeben sich relevante Handlungsbedarfe in Richtung einer Verstärkung und Ausdifferenzierung automatisierter Logistiksysteme in der Krankenhausversorgung.
Digitale Revolution in der Logistik: 5G verändert die Abläufe im Krankenhaus
Authors: Gross Benedict , Asma Jörg
Published: June 2023

Alles im Krankenhaus ist Logistik. Und dennoch kommt dieser Funktion keine ausreichende Aufmerksamkeit zu. Die neue Mobilfunktechnologie 5G könnte das ändern. Durch sie kann eine Funkinfrastruktur geschaffen werden, auf der eine Vielzahl von Endgeräten und Sensoren sicher vernetzbar sind. Das schafft die Grundlage für Transparenz und Steuerbarkeit in der Krankenhauslogistik.
Effect of temporal resolution on the reproduction of chaotic dynamics via reservoir computing
Authors: Tsuchiyama Kohei , Röhm André , Mihana Takatomo , Horisaki Ryoichi , Naruse Makoto
Published: June 2023

Reservoir computing is a machine learning paradigm that uses a structure called a reservoir, which has nonlinearities and short-term memory. In recent years, reservoir computing has expanded to new functions such as the autonomous generation of chaotic time series, as well as time series prediction and classification. Furthermore, novel possibilities have been demonstrated, such as inferring the existence of previously unseen attractors. Sampling, in contrast, has a strong influence on such functions. Sampling is indispensable in a physical reservoir computer that uses an existing physical system as a reservoir because the use of an external digital system for the data input is usually inevitable. This study analyzes the effect of sampling on the ability of reservoir computing to autonomously regenerate chaotic time series. We found, as expected, that excessively coarse sampling degrades the system performance, but also that excessively dense sampling is unsuitable. Based on quantitative indicators that capture the local and global characteristics of attractors, we identify a suitable window of the sampling frequency and discuss its underlying mechanisms.
Research on registration error compensation of large-scale measurement field based on neural network
Authors: Huang Lulu , Huang Xiang , Li Shuanggao , Hou Guoyi
Published: June 2023

The combination of large tooling size, environmental vibration, and equipment errors at the aircraft assembly site leads to errors in the enhanced reference system (ERS) point measurement information. ERS point errors directly reduce the accuracy of the assembly measurement field. This paper proposes ERS point error prediction and registration compensation based on the neural network to address this problem. First, the effects of equipment measurement errors and environmental vibration factors on the measurement field are studied. The ERS point error prediction model based on the neural network is established. On this basis, model evaluation is used to assess the prediction model of this paper. Then, a measurement field registration compensation model is constructed based on the neural network error results for ERS point compensation analysis. Finally, an experimental validation platform was built to predict the ERS point errors and compensate for the constructed measurement fields using the method in this paper. The experimental results show that, compared with the conventional method, the maximum registration errors in the X, Y, and Z directions are reduced from 0.0812, −0.0565, and −0.2810 to −0.0184, −0.0010, and 0.0022 mm, respectively, after compensation in this paper. The method proposed in this paper can not only predict the ERS point error state and provide a reference for designers but also guide the selection of appropriate ERS points when constructing the measurement field. The compensation method in this paper effectively reduces the measurement field registration error.
Wavelength-independent light extraction enhancement by nanostructures for scintillators with broadband emission
Authors: Zhang Fan , Huang Yi , Guo Yaozhen , Zhang Juannan , Ouyang Xiaoping , Liu Bo
Published: June 2023

Conventional photonic crystals with a single period are capable of enhancing the light output of scintillators based on the partial elimination of internal total reflection. However, the enhancement often comes along with a strong wavelength dependence, leading to a severe spectrum distortion. Here, the nanostructures for wavelength-independent light extraction enhancement, namely, multi-size spherical nanostructures, are designed and fabricated. The nanostructure can efficiently outcouple the scintillation light and at the same time significantly weaken the wavelength dependence. The light output of the scintillators with the nanostructures obtains noticeable enhancement with a ratio of 1.7, having weak wavelength dependence, which is in contrast to the enhancement by single-periodic photonic crystals. In addition to the applications on the scintillators, we anticipate that these wavelength-independent light output enhancement schemes could be expanded to other important fields, such as white light-emitting diodes and display devices.
Improving pose estimation accuracy for large hole shaft structure assembly based on super-resolution
Authors: Zhou Kuai , Huang Xiang , Li Shuanggao , Li Gen
Published: June 2023

Image resolution is crucial to visual measurement accuracy, but on the one hand, the cost of increasing the resolution of the acquisition device is prohibitive, and on the other hand, the resolution of the image inevitably decreases when photographing objects at a distance, which is particularly common in the assembly of large hole shaft structures for pose measurement. In this study, a deep learning-based method for super-resolution of large hole shaft images is proposed, including a super-resolution dataset for hole shaft images and a new deep learning super-resolution network structure, which is designed to enhance the perception of edge information in images through the core structure and improve efficiency while improving the effect of image super-resolution. A series of experiments have proven that the method is highly accurate and efficient and can be applied to the automatic assembly of large hole shaft structures.
Numerical model supplemented by thin-layer analysis for diffusiophoresis of a particle incorporating finite ion size effects
Authors: Bhaskar Babu , Bhattacharyya Somnath
Published: June 2023

The impact of finite-sized ions on the diffusiophoresis of a charged colloid subjected to a concentration gradient of electrolyte solution consisting monovalent or multivalent ionic species, is studied. In diffusiophoresis, the ion concentration is of O(1M). In this non-dilute electrolyte solutions, the ion–ion steric interaction is important. We have adopted the Boublik–Mansoori–Carnahan–Starling–Leland (BMCSL) model to account for the ion steric interactions and the Batchelor–Green expression for the relative viscosity of suspension. We have solved the standard model numerically considering ions as point charge (PNP-model), the modified Nernst–Planck equations incorporating the ion steric interaction with constant viscosity (MNP-model), and modification of the MNP-model by incorporating the viscosity variation with the ionic volume fraction (MNPV-model). Semi-analytical expressions for mobility based on a linear perturbation technique under a thinner Debye length is presented for PNP- and MNP-models. In the MNP-model, counterion saturation in the Debye layer due to the ion steric interaction enhances the surface potential by attenuating the shielding effect, diminishes the surface conduction, and magnifies the induced electric field. These in combination create a larger mobility at a thinner Debye length compared with the PNP-model. This increment in mobility attenuates when the MNPV-model is considered. The MNPV-model is more appropriate to analyze the finite ion size effects, and it is found to yield the mobility values more close to the experimental data compared with the MNP- and PNP-model. The semi-analytical expressions for mobility based on the PNP- and MNP-models agree with the corresponding exact numerical solutions when the surface potential is in the order of thermal potential. However, a large discrepancy between the simplified expression and the exact numerical results is found for a concentrated electrolyte in which the induced electric field is large.
Sensing azimuthally symmetric objects by a single-pixel detector via COAM matrix
Authors: Li WeiHao , Wu Dan , Chen Yahong , Cai Yangjian , Korotkova Olga , Wang Fei
Published: June 2023

A coherence-orbital angular momentum (COAM) matrix describes the second-order spatial correlations among the pairs of the OAM states in a light beam at two radial positions. It provides a detailed information regarding the azimuthal features of the light beam itself or of the objects interacting with it. In this Letter, we reveal a close relationship existing between the COAM matrix's elements of a partially coherent light beam and the angular gratings that it passes through. It is demonstrated both in theory and in experiment that all the parameters of the angular gratings can be identified by measuring the COAM matrix elements. While the off-diagonal elements possess information about the angular shifts and the rotation speed of the angular grating, the diagonal elements account for the energy distribution among the OAM modes. The experimental results agree reasonably well with the theoretical analysis. One practically significant capability is that our technique offers the determination of angular shifts of azimuthally symmetric objects and/or their rotational speed, by means of a single-pixel detector.
The influence of hydrogen plasma etching on the surface conductivity of the polycrystalline diamond surface and the temperature-dependent properties
Authors: Jia Zhenglin , Yang Mingyang , Qiu Mengting , Zhang Bingxue , Nishimura Kazuhito , Lin Cheng-Te , Jiang Nan , Yuan Qilong
Published: June 2023

With the development of carbon-based electronics, the polycrystalline diamond has drawn much attention in diamond electronic devices; as compared to single crystalline diamond, the scale of the polycrystalline diamond can be fabricated over 4 in. much more easily. However, until now, the influence factors on the surface conductivity of hydrogen-terminated polycrystalline diamond (H-PCD) are still unclear. In this work, the carrier concentration and mobility of H-PCD were investigated through Hall effect measurement. It was found that besides surface roughness, the temperature at which the equilibrium states of adsorption and desorption of H-PCD surface adsorbates are established also plays an important role in carrier concentration and mobility. With the increase of the establishment temperature, both carrier concentration and mobility show a decreasing tendency, which may be determined by the coefficient of the surface ionic scattering, phonon scattering, and the grain boundaries on the H-PCD surface. The investigation of this work will give some insight into the control of the surface conductivity on H-PCD from the aspect of the equilibrium state established temperature and surface roughness.
Retention of an apparently functional plastome in an apparently mycoheterotrophic orchid, Dipodium roseum D.L.Jones & M.A.Clem. (Orchidaceae)
Authors: McLay Todd G. B. , Bayly Michael J. , Whitehead Michael R. , Fowler Rachael M.
Published: June 2023

Context Giving up photosynthetic function is a bold evolutionary step for a plant, yet the evolutionary transition from autotrophy to mycoheterotrophy has occurred dozens of times. Comparing plastome sequences of mycoheterotrophs and autotrophs has identified recurring patterns of gene loss throughout a range of land plants, though more comparisons are required to see how broadly these patterns apply across the diversity of terrestrial plants. Mycoheterotrophy is especially common in Orchidaceae, with more than 40 transitions from autotrophy to mycoheterotrophy in the family. Aims We sought to test generalised patterns of plastome degradation seen in other mycoheterotrophs by comparing two species in the genus Dipodium (Orchidaceae); one species is photosynthetic and the other appears to be a facultative mycoheterotroph species. Methods We sequenced and assembled the plastomes of two Dipodium species and compared the two genomes to identify gene degradation or loss. Results The two plastomes were nearly identical, with no degradation of photosynthesis genes in the putative mycoheterotroph, and both species have undergone loss or pseudogenisation of all plastid ndh (nicotinamide adenine dinucleotide + hydrogen specific dehydrogenase) genes. Conclusions These results contrast with most other comparisons between photosynthetic and likely mycoheterotrophic relatives, where rapid degradation in mycoheterotroph plastome genes is common, and may suggest the leafless Dipodium species are capable of photosynthesis and may be in the early stages of transitioning to a fully heterotrophic lifestyle. Implications Further investigation of trophic transitions in Dipodium, including sequencing more plastomes and measuring photosynthetic capability of the putative heterotrophs, will yield insights into the evolution of plant lineages that lose the ability to photosynthesise.
The polysemy of the Japanese temperature adjective atsui
Authors: Wang Haitao , Kanamaru Toshiyuki , Li Ke
Published: June 2023

This study adopts a corpus-based behavioral profile approach to explore the semantic relationships among the senses of the Japanese temperature adjective atsui (‘hot’). As a result, the hierarchical cluster analysis represents the distributional (dis)similarity of the ten senses of atsui. Average silhouette width suggests a two-cluster interpretation, which reveals that senses derived from the same experience (sensory or subjective) tend to have similar usage characteristics. The discriminating properties of four subclusters and usage characteristics of each sense have been identified by means of computing t-values. Also, the structure of the hypothesized network has been represented based on the distributional (dis)similarity of the ten senses. The relationships among these ten senses and the usage characteristics identified in this study provide insight into Japanese lexicography. Moreover, as the first attempt to apply the behavioral profile to the investigation of Japanese polysemy, this study holds implications for lexical semantics in Japanese.
Autoantibodies neutralizing type I IFNs underlie West Nile virus encephalitis in ∼40% of patients
Authors: Gervais Adrian , Rovida Francesca , Avanzini Maria Antonietta , Croce Stefania , Marchal Astrid , Lin Shih-Ching , Ferrari Alessandro , Thorball Christian W. , Constant Orianne , Le Voyer Tom , Philippot Quentin , Rosain Jérémie , Angelini Micol , Pérez Lorenzo Malena , Bizien Lucy , Achille Cristian , Trespidi Francesca , Burdino Elisa , Cassaniti Irene , Lilleri Daniele , Fornara Chiara , Sammartino José Camilla , Cereda Danilo , Marrocu Chiara , Piralla Antonio , Valsecchi Chiara , Ricagno Stefano , Cogo Paola , Neth Olaf , Marín-Cruz Inés , Pacenti Monia , Sinigaglia Alessandro , Trevisan Marta , Volpe Andrea , Marzollo Antonio , Conti Francesca , Lazzarotto Tiziana , Pession Andrea , Viale Pierluigi , Fellay Jacques , Ghirardello Stefano , Aubart Mélodie , Ghisetti Valeria , Aiuti Alessandro , Jouanguy Emmanuelle , Bastard Paul , Percivalle Elena , Baldanti Fausto , Puel Anne , MacDonald Margaret R. , Rice Charles M. , Rossini Giada , Murray Kristy O. , Simonin Yannick , Nagy Anna , Barzon Luisa , Abel Laurent , Diamond Michael S. , Cobat Aurélie , Zhang Shen-Ying , Casanova Jean-Laurent , Borghesi Alessandro
Published: June 2023

Mosquito-borne West Nile virus (WNV) infection is benign in most individuals but can cause encephalitis in <1% of infected individuals. We show that ∼35% of patients hospitalized for WNV disease (WNVD) in six independent cohorts from the EU and USA carry auto-Abs neutralizing IFN-α and/or -ω. The prevalence of these antibodies is highest in patients with encephalitis (∼40%), and that in individuals with silent WNV infection is as low as that in the general population. The odds ratios for WNVD in individuals with these auto-Abs relative to those without them in the general population range from 19.0 (95% CI 15.0–24.0, P value <10–15) for auto-Abs neutralizing only 100 pg/ml IFN-α and/or IFN-ω to 127.4 (CI 87.1–186.4, P value <10–15) for auto-Abs neutralizing both IFN-α and IFN-ω at a concentration of 10 ng/ml. These antibodies block the protective effect of IFN-α in Vero cells infected with WNV in vitro. Auto-Abs neutralizing IFN-α and/or IFN-ω underlie ∼40% of cases of WNV encephalitis.
Multi-soliton solutions and asymptotic analysis for the coupled variable-coefficient Lakshmanan-Porsezian-Daniel equations via Riemann-Hilbert approach
Authors: Ma Lei-Nuo , Li Si , Wang Tian-Mu , Xie Xi-Yang , Du Zhong
Published: June 2023

In this paper, we study multi-soliton solutions and asymptotic analysis for the coupled variable-coefficient Lakshmanan-Porsezian-Daniel equations, which describe the simultaneous propagation of nonlinear waves in the inhomogeneous optical fibers. We analyze the spectrum of the Lax pair to establish the Riemann-Hilbert problem. Using such Riemann-Hilbert problem, we calculate various multi-soliton solutions without reflection, including breather-like and mixed solitons. We illustrate the propagation and interaction dynamics of the solitons through appropriate parameter selection and asymptotic analysis. We find that the interaction between solitons is elastic, the amplitudes of solitons are only determined by the initial velocity and interaction, and the soliton with lower energy always yields a position shift when elastic interaction occurs. In addition, we observe that the existence time of the wave changes with energy and that multiple elastic interactions between solitons can be obtained when we choose appropriate variable coefficients. Then, we investigate the influences of group velocity dispersions and fourth-order dispersions on the interactions of solitons through parameter modulation mode and asymptotic analysis. Furthermore, we present several new types of nonlinear phenomena graphically, including elastic interactions between parabolic solitons and hump-type solitons, elastic interactions between cubic solitons and hump-type solitons, and periodic-changing propagations.
Study on erosion-reducing additives and erosion inhibition principle for R2 high energy propellant
Authors: Zhizhong Gao , Peichen Han , Qiong Liu , Hao Guo , Hongye Liang , Ping Du
Published: June 2023

In view of the serious erosion problem of the gun barrel with the R2 high-energy propellant, an erosion tube device method was adopted, and silane organic substances, silicate inorganic substances, titanium dioxide nanoparticles and paraffin wax were selected as erosion-reducing additives. The effect of different erosion-reducing additives on the erosive property of R2 propellant was investigated by means of external addition. The erosion inhibition principle was also briefly investigated by scanning electron microscope and energy dispersive X-ray spectroscopy. The results show that paraffin wax has excellent ability to improve gun barrel erosion resistance, the erosion-reducing efficiency can reach up to 31.2%, the erosion-reducing efficiency of silanes is the next most effective, and silicate is poor.
Study on In-line Insensitive High Explosive Train Based on Multipoint Overpressure Initiation
Authors: Qin Guo-sheng , Zhou Mi , Wang Ke-xuan , Wang Yin , Tong Hong-hai
Published: June 2023

The feasibility of in-line insensitive high explosive train based on multipoint overpressure initiation is studied in this paper. The output capacity of the multi-point EFI is verified by the initiation margin test. The multi-point EFI can reliably detonate the insensitive booster TATB. Be directed against the multi-point EFI, the slow cook-off test and Liquid fuel fire test were carried out and the response level was not greater than combustion. A liquid fuel fire test was carried out aimed at a small-scale bomb composed by multi-point EFI and insensitive booster TATB. The response grade of small-scale bomb in the liquid fuel fire test is combustion. The results of series of tests show that a in-line insensitive high explosive train can be formed by using the multi-point EFI and insensitive booster.
The aging property and storage life prediction of EPDM
Authors: shuang-hong Wang , chang-sheng Zhou , chao-fan Han
Published: June 2023

The performance change of Ethylene propylene diene monomer (EPDM) was studied by the accelerated aging experimental method, and its lifespan was predicted. The results showed that the thermal oxidation aging of EPDM is dominated by the crosslinking reaction. With the extension of the thermal oxidation aging time, the total crosslinking density and tensile permanent deformation gradually decrease, while the tensile strength and hardness increase gradually. The life prediction formula of EPDM under the thermal-oxidative aging condition was obtained by the linearization method of the kinetic curve. When tensile permanent deformation was used as the evaluation index, the life was 30 a at the temperature of 296.15 K.
Cross-scale Numerical Simulation of Carbon Fiber Reinforced PTFE/Al
Authors: Wang Jin , Liu Zhen-Yang , Zhang Yong , Ge Chao
Published: June 2023

In view of strengthening reinforced PTFE/Al composite system, based on the fiber strengthening mechanism and cross-scale theory of composite material, the research about material component system design, mechanical property design and microstructure optimization was carried out by means of theoretical analysis and cross-scale numerical simulation. The mechanical properties of the composite system with different carbon fiber content and aspect ratio were studied by using PTFE/Al reinforced composite system with short carbon fiber.
Pitch Angle Error Measurement Technology for Track and Control Equipment Based on Trajectory
Authors: Qiu B A , Sun P , Li L L
Published: June 2023

Due to the large support span of the pitching mechanism of the Fork-arm antenna pedestal of large phased array track and control equipment, the antenna array was deflected downward by its self-weight load. When measuring the pitch angle error, the pitch axis and the normal pointing angle of the array fluctuated, which significantly interfered with the evaluation results of common measuring methods for pitch angle error such as electronic goniometer. In view of the above problems, this paper proposed a pitch angle error measurement technology of track and control equipment based on motion trajectory. In this method, Target point for measurement was set in the appropriate area of the end face of the array skeleton, and the laser tracker was used to track and capture the spatial coordinates and trajectory of the target point in the process of pitching motion. The geometric model of the pitch angle algorithm was constructed based on the circular motion trajectory, which eliminated the influence of the fluctuation of the pitch axis and the normal pointing angle of the array on the pitch angle. The pitch angle error algorithm and data processing model were established, and the programmed rapid calculation and evaluation of the pitch angle deviation of track and control equipment were realized.
Target recognition and tracking system based on UAV platform
Authors: Han Xingye , Wang Dongfei , Wang Qiang , Tang Yunlong
Published: June 2023

Machine learning can extract the features of the target from the known image dataset and detect the target quickly by using the trained deep neural network. Due to UAVs’ fast flight speed and long detection distance, real-time and accurate target detection requirements are relatively high. For such scenarios,a ground object recognition and tracking method that integrates the YOLOv5 target detection algorithm and KCF target tracking algorithm are proposed. The combination of the two algorithms can meet the requirements of recognition speed, recognition rate, and tracking accuracy in the current scene. Two algorithms are run simultaneously in the recognition process, the detection frame with the highest confidence is selected as the final detection result, and the detected target is tracked by the KCF target tracking algorithm based on correlation filtering. The experimental results show that this method not only meets the requirements of recognition distance, recognition accuracy, and recognition speed of ground target but also can track a ground target in real-time, with strong robustness and real-time performance.
Test of pressure load on surface of typical concrete structure caused by underwater explosion
Authors: Xue Chaoyang , Kong Deren
Published: June 2023

To study the pressure load of the underwater explosion on the typical surface of a concrete structure, composition B were used to explode in water, and the shock wave pressure on the front, side, top and back of the concrete pile was measured. The theoretical peak pressure of shock wave at the same distance in infinite water was calculated. The results show that the peak pressure of reflected shock wave at the front of concrete pile is the largest, which is nearly twice the theoretical value of the peak pressure of reflected shock wave at the same distance in infinite water. When the shock wave continues to propagate on the side and top surface, the peak pressure on the side is higher than that on the top surface. The peak pressure of the shock wave diffused from the side and top surfaces on the back is smaller than that of the other surfaces.
Analysis of the strength property of capillary plasma generator
Authors: Li Haiyuan , Li Baoming
Published: June 2023

Plasma generator is a key component of electrothermal chemical gun. Its function is to produce plasma under the action of high pulse current and enhance the combustion characteristics of the propellant, thus improving the launch efficiency and muzzle velocity. The structural properties of the plasma generator are related to its discharge characteristics, internal pressure, and plasma jet characteristics, etc. This paper studies the strength property of capillary plasma generator under working conditions, and provides a reference for the structural design of the plasma generator.
Research on fire distribution algorithm based on Hopfield neural network
Authors: Chi Zhang , Chun Zhang , Yan Wang , Hao Hu
Published: June 2023

the problem of air defense fire distribution in ECM command and control system is studied. Based on the mathematical model of fire distribution, the classical solution algorithm Hungarian method is introduced, and the shortcomings of Hungarian method in solving fire distribution are pointed out. According to the basic principle of Hopfield neural network model, the algorithm process of solving specific optimization problems is deduced, and the fire distribution problem is simulated. According to the simulation results, the application conclusion and improved method of Hopfield neural network model in fire distribution problem are given, which proves that the model can solve the fire distribution problem more effectively.
Dynamic Modeling of Helicopter Aerogun System Based on Transfer Matrix Method
Authors: He Q , Li J X , Zhang F F
Published: June 2023

The aerogun system is an indispensable automatic shooting weapon on the armed helicopter. The system is a complex mechanical system with large motion and small deformation, in which multiple rigid bodies and flexible bodies are connected in a certain way. In this study, the system dynamics model of the armed helicopter aerogun was established by using the multi-body system transfer matrix method. The finite element model for dynamic analysis of helicopter aerial gun is established, and the modal calculation and dynamic response analysis of key connection parts are carried out. t lays a foundation for adjusting the vibration frequency by changing the state parameters. So as to reduce vibration and improve shooting accuracy.
Vegetable substituted tuna nuggets and changes in nutrient content during frozen storage
Authors: Kusumawardani HD , Juwantoro D , Ayuni PD , Samsudin M
Published: June 2023

Malnutrition in children will affect their growth, causing a decrease in study skills and immunity. Considering the issues, overcoming the nutritional issues of babies and toddlers by giving food supplements is mandatory. Innovations in making food supplements basically from fish aim to increase the number of nutritions such as protein, fiber, vitamins, minerals, and antioxidants which contribute to the development of body organ function. This research is aimed to know the changes in iron, beta carotene, and zinc during storage. The research design is experimental. The first stage is making tuna nuggets which are substituted with pumpkin, broccoli, and red beans. Furthermore, the analysis of nutrients before and after storage in the freezer for 3 months. There was a decrease in beta carotene levels in pumpkin tuna nuggets, broccoli tuna, and red bean tuna, 34.5%, 14.2%, and 9.6%, respectively. There was an increase in the iron content of pumpkin tuna nuggets, broccoli tuna, and red bean tuna as much as 65.2%, 7.1%, and 30%, respectively. There was a decrease in zinc levels in pumpkin tuna and broccoli tuna nuggets as much as 23.6% and 78.8%, respectively. There was an increase in zinc levels in red bean tuna nuggets as much as 46.3%. Storage of nuggets in frozen conditions in the freezer for 3 months causes changes in beta carotene, iron, and zinc levels.