bluuebunny/crossref_metadata_2025_split huggingface dataset:
Photodissociation dynamics of the ethyl radical via the Ã2A′(3s) state: H-atom product channels and ethylene product vibrational state distribution
Authors: Sun Ge , Zheng Xianfeng , Song Yu , Zhou Weidong , Zhang Jingsong 
Published: September 2023

The photodissociation dynamics of jet-cooled ethyl radical (C2H5) via the Ã2A′(3s) states are studied in the wavelength region of 230–260 nm using the high-n Rydberg H-atom time-of-flight (TOF) technique. The H + C2H4 product channels are reexamined using the H-atom TOF spectra and photofragment translational spectroscopy. A prompt H + C2H4(X̃1Ag) product channel is characterized by a repulsive translational energy release, anisotropic product angular distribution, and partially resolved vibrational state distribution of the C2H4(X̃1Ag) product. This fast dissociation is initiated from the 3s Rydberg state and proceeds via a H-bridged configuration directly to the H + C2H4(X̃1Ag) products. A statistical-like H + C2H4(X̃1Ag) product channel via unimolecular dissociation of the hot electronic ground-state ethyl (X̃2A′) after internal conversion from the 3s Rydberg state is also examined, showing a modest translational energy release and isotropic angular distribution. An adiabatic H + excited triplet C2H4(ã3B1u) product channel (a minor channel) is identified by energy-dependent product angular distribution, showing a small translational energy release, anisotropic angular distribution, and significant internal excitation in the C2H4(ã3B1u) product. The dissociation times of the different product channels are evaluated using energy-dependent product angular distribution and pump–probe delay measurements. The prompt H + C2H4(X̃1Ag) product channel has a dissociation time scale of &lt;10 ps, and the upper bound of the dissociation time scale of the statistical-like H + C2H4(X̃1Ag) product channel is &lt;5 ns.
Photographing Chinese childhood
Authors: Medhurst Jessica 
Published: September 2023

Abstract
Photography was brought to China from Europe in the 1840s, whereby the narratives these pictures told about the country
were largely framed in pseudo-colonial terms. Although Western photographers – including Isabella Bird, Jules Itier, James Ricalton
and John Thomson – consistently characterized the camera as showing China in the most faithful way possible, these apparently
authentic representations were steeped in established Western tropes of what China was already assumed to look like. This chapter uses
this backdrop to interrogate what these photographs say about Chinese childhood, which, in the literature of the period, is
characterized as both a natural and universal condition, and as something that is incompatible with being Chinese. The chapter
discusses the switching between what the photographs’ commentaries claim the children are like and what they
should be like, as well as offering alternative readings of childhood in the pictures, focusing on ideas of
innocence, formality, and playfulness. It concludes by demonstrating the ways in which these narratives still continue in Anglophone
texts today through publication, exhibition, and academic discourse.
Soviet socialist su(pe)rrealism for children
Authors: Boškovic Aleksandar , Morse Ainsley 
Published: September 2023

Abstract
This chapter posits a kind of Soviet Surrealism, or “su(pe)rrealism”, in photo-illustrated Soviet children’s literature of
the interwar period. The techniques of manipulating photo-images that carried out the montage in a single frame were widely employed
in photo-illustrated children’s books published in the late 1930s. Unlike earlier Soviet children’s books, which mostly employed
photography toward “capturing real life” and promoting mass education, these late-1930s photobooks conjured a fairy-tale wonderland in
which reality is somewhat bracketed and objects are given visible agency. Instead of the “baring of the device” typical of the 1920s,
later graphic artists sought to hide the device in order to increase the naturalistic effect of photo-montaged
representations. These photographic “deformations,” effected by retouching and manipulations of scale, rendered the world of objects –
the so-called “real” world surrounding children – subtly uncanny, subject to distortion and, thus, distinctively surrealist. This turn
toward the surreal seems curiously at odds yet consonant with the totalizing culture of Stalinism – hence our suggestion of
“super-real” as an alternative designation.
From the “Children of all Lands Stories” to the “Enfants du monde” collection
Authors: Le Guen Laurence 
Published: September 2023

Abstract
Although it does not appear under this name on the shelves of bookshops or libraries, the literary genre of the
phototextual country portrait has an effective reality in children’s literature, with a wide variety of publications. These works are
regularly published in periods when children’s books are seen as the engine of a new pacifist humanism. They flourished in different
parts of the world after the two world wars, all carrying the same message of hope, transmitting the conviction that the world, in its
diversity and complexity, is one: our world. This article juxtaposes the works of the 1920s series “Children of all Lands Stories”, by
the American photographer and filmmaker Madeline Brandeis, with those of the “Enfants du monde” collection, carried by photographs by
French photographer Dominique Darbois, to discuss how photographs and texts are combined to offer the young reader new views of the
Other and thus promote peace between peoples through children’s literature.
In and out of focus
Authors: Druker Elina 
Published: September 2023

Abstract
Anna Riwkin was a Russian-Swedish photographer who contributed significantly to the growing use of photographs in
children’s picturebooks during the second half of the twentieth century. This chapter investigates the photographic techniques and
genres in Riwkin’s works for children. Using a selection of reportage portraits and photo books by her as a starting point, the
chapter discusses the relationship between words and images in photo narratives for children. During the early part of her career,
Riwkin specialized in portraits and dance photography and during the 1930s, she added journalistic work to her repertoire. Traces of
all these genres are evident in her photographic picturebooks. They express realist and documentary ambitions, aiming to capture the
perspective of the individuals portrayed, but at the same time their images are staged and embedded in a narrative, which affects
their expression and style. Riwkin’s choice to work with children’s literature also raises questions about women photographers’
position within the field of photography. How were women photographers perceived within different types of photography? Should the aim
to work with children’s books be understood in relation to the artist’s socially engaged approach or was it seen as particularly
suitable for a female photographer? Since Riwkin was one of the pioneering women photographers in Europe, the reception of her work is
of utmost interest, both when it comes to contemporary critique and the perception of her work in later photographic research.
Politics, art, and pedagogy in Edith Tudor-Hart’s photographs of children
Authors: Reynolds Kimberley 
Published: September 2023

Abstract
Edith Tudor-Hart, a photographer working in Britain from the 1930s to the 1950s, became exceptionally good at
photographing children. Her final series of images, published in a classroom text called Moving and
Growing (1952), were created through a collaborative method she developed
by combining her teaching experience and her training as an artist with her political conviction that photography is a democratic
medium. The results are dynamic photographs that capture children moving, risking and creating. Shortly after Moving and
Growing was published, Tudor-Hart abandoned photography and destroyed her catalogue of negatives fearing she was about to
be prosecuted as a spy. As a consequence, her work was largely forgotten, but her images and working methods deserve to be recalled
and studied. In our highly visual age, Edith Tudor-Hart’s powerful images have much to say about the relationship between photography
and images of childhood.
The mirror and multiplicity
Authors: Capshaw Katharine 
Published: September 2023

Abstract
Black creators in the 1970s used the photographic picturebook to recreate black identity and history. Whether tethering
images to the logic of the alphabet, as do Yusef Iman and Jean Carey Bond, or deploying images to disrupt narratives of American
history, as do Toni Morrison and June Jordan, creators recognized the multiple aesthetic and political possibilities engendered by an
assemblage of images. The photograph seeks to mirror by fixing places and people on the page; and some narratives productively pull
against closure, embracing instead the ongoing process of knowing black history through interpreting the sequence of photographs.
The Linguistic Landscape of the war
Authors: Baranova Vlada 
Published: September 2023

Abstract
Being immersed in a covert conflict within a censored society, the Linguistic Landscape provides valuable insights
into the dynamics of multilingual communication during war. Following the full-scale Russian invasion of Ukraine, political
involvement among ethnic minority groups in Russia has experienced a surge. The use of minority languages signifies a hidden but
significant form of protest, empowering ethnic minorities to assert their agency and political claims. Through an examination of
anti- and pro-war signs in minority languages and interviews with language activists, this study explores how these languages are
employed within the LL, revealing the motivations and attitudes of their authors. Minority languages in anti-war signs serve as
secret codes while also personalizing protests and appealing to group solidarity. However, pro-war signs also evoke solidarity and
ethnic values. Analysis of the anti- and pro-war signs illustrates their connection to other texts in minority languages,
referencing discourses and ethnic symbols within the community of speakers of a minority language.
The pragmatics of advice-giving in the media discourse
Authors: Tang Chihsia 
Published: September 2023

Abstract
This study investigated how the gender of the contestants in TV talent competitions affects male and female
judges’ management of their advice, exemplified by evaluative talks in two Taiwan-based talent contests. In addition to the
pragmatic configuration of the advising acts, the internal and external modifiers of the advising speech events were also analyzed
in an attempt to gain insights into whether and how the advice messages are instrumental in the construction of gender identities.
Results showed that deviating from the stereotypical gendered style of communication, the female judges utilized significantly
fewer politeness mechanisms than did their male counterparts to moderate their advice. Besides, the psychological needs and face
want of the male and female advice-receivers remarkably influenced the discursive moves of the given advice comments. These
findings suggested that in the public media discourse, the speech context outweighs the socially prescribed gendered styles of
communication on one’s advice-giving behavior.
Design and analysis of ultra-low moment noise flexure pivot in space gravitational wave detectors
Authors: Shi Zhibin , Liu Yanfu , Zhao Zijing , Wang Zihan , Yan Yong , Fan Lei , Li Zizheng , Zhao Hongchao 
Published: September 2023

Abstract
To control the pointing accuracy of the telescope in the space gravitational wave detector at the nano-radian level, it is essential to design a flexure pivot with extremely low rotational moment nonlinearity during rotation. This study derives the theoretical equation of the nonlinear rotational moment of flexure pivot based on the beam bending strain energy equation and completes the design of ultra-low moment noise flexure pivot by integrating the structural form of conventional cross-spring flexure pivot. The nonlinear moment noise distribution in the frequency domain of three kinds of flexure pivots is then compared regarding TianQin’s circular high orbits. Then the relevant finite element simulation analysis will be performed for the flexure pivot structures, respectively, to ensure the accuracy of its rotational stiffness model and verify the correctness of nonlinear moment theory optimization through physical experiments. The results show that the optimized flexure pivot can effectively reduce the nonlinearity, and basically meet the nonlinear moment requirements in space gravitational wave detection.
Geometry of static perfect fluid space-time
Authors: Costa J , Diógenes R , Pinheiro N , Ribeiro Jr E 
Published: September 2023

Abstract
In this article, we investigate the geometry of static perfect fluid space-time (SPFST) on compact manifolds with boundary. We use the generalized Reilly’s formula to establish a geometric inequality for a SPFST involving the area of the boundary and its volume. Moreover, we obtain new boundary estimates for SPFST. One of the boundary estimates is obtained in terms of the Brown–York mass and another one related to the first eigenvalue of the Jacobi operator. In addition, we provide a new (simply connected) counterexample to the Cosmic no-hair conjecture for arbitrary dimension

n
⩾
4.
Development and experimental investigation of a high-precision capacitive displacement transducer of the inertial sensor for TianQin
Authors: Wang Chengrui , Bai Yanzheng , Hu Ming , Li Duo , Li Ke , Ouyang Chaoli , Qu Shaobo , Xiao Chunyu , Yang Xiaotian , Zhou Annan , Zhou Zebing 
Published: September 2023

Abstract
Capacitive sensing electronics are critical to space gravitational wave detection missions, providing the test mass motion information for the inertial sensor’s non-sensitive axis control and the drag-free control of the satellite. For the TianQin mission, the capacitive sensor requirement is

6.9
×

10

−
7

p
F
H

z

−
1

/

2

at 6 mHz, corresponding to a displacement noise of

1.7

n
m
H

z

−
1

/

2

. This paper presents the system design scheme, noise analysis, and performance testing of the capacitive sensor for the TianQin mission. Based on the previous work of our group, a capacitive sensing scheme based on a transformer bridge and modulation–demodulation is adopted. A transformer with a better high LQ product is fabricated, and the preamplifier current noise is reduced to further improve the performance above mHz. The amplitude stability of the AC carrier and the performance of the lock-in amplifier circuit are further improved to reduce the low-frequency

1

/

f

noise at

m
H
z

and below. Finally, a capacitive sensor prototype is developed and tested, the experimental results show that the capacitance measurement noise is better than

3
×

10

−
7

p
F
H

z

−
1

/

2

above 1 mHz and better than

6
×

10

−
7

p
F
H

z

−
1

/

2

at about

0.1

mHz

, which meets the overall performance requirement of the TianQin mission.
Derivation of MOND from Hossenfelder–Verlinde gravity
Authors: Yoon Youngsub 
Published: September 2023

Abstract
Verlinde proposed emergent gravity, which naturally explains the Tully–Fisher relation, an empirical relation in galaxy rotation curves. Inspired by this theory, Hossenfelder constructed a covariant formulation of Verlinde’s emergent gravity. In this work, we show that the equation of motion gains an extra acceleration in addition to the usual geodesic equation, according to Hossenfelder’s theory. Moreover, we show that the extra acceleration is precisely the square root of the Newtonian gravitational acceleration if the mass of the imposter field is negligible, thus completing the proof that Hossenfelder’s theory reduces to modified Newtonian dynamics (MOND) and determining which version of MOND it reduces to. We also obtain the value of L in Hossenfelder–Verlinde gravity theory, which is a constant, contrary to what Hossenfelder claimed. Finally, we suggest how the Newtonian limit that suitably describes our observations in Solar System is recovered in Hossenfelder’s theory, by considering the mass of the imposter field.
A large-momentum-transfer matter-wave interferometer to measure the effect of gravity on positronium
Authors: Vinelli G , Castelli F , Ferragut R , Romé M , Sacerdoti M , Salvi L , Toso V , Giammarchi M , Rosi G , Tino G M 
Published: September 2023

Abstract
This paper reports the study of a new interferometric configuration to measure the effect of gravity on positronium. A Mach–Zehnder matter-wave interferometer has been designed to operate with single-photon transitions and to transfer high momentum to a 200 eV positronium beam. The work shows the results and methods used to simulate the interferometer and estimate the operating parameters and the time needed to perform the experiment. It has been estimated that within less than 1 year, the acquisition time is sufficient to achieve a 10% accuracy level in measuring positronium gravitational acceleration, even with a poorly collimated beam, which is significant for theoretical models describing matter–antimatter symmetry. These results pave the way for single photon transition large momentum transfer interferometry with fast atomic beams, which is particularly useful for studies with antimatter and unstable atoms.
Underwater acoustic self-focusing and bending in conformal Mikaelian lens by pentamode metafluid
Authors: Sun Zhaoyong , Zhao Liuxian , Yang Jun 
Published: September 2023

Abstract
In this paper, we present the design of an arc-shaped Mikaelian lens using conformal transformation acoustics. We have derived the propagation trajectory equation for vertically incident rays within the lens. The ray trajectories inside the designed lens exhibit the feature of self-focusing as well as of deflection of the propagation direction. The microstructure design of the lens is realized using pentamode material unit cells, which provide the necessary property for underwater acoustic wave manipulation. The simulation results demonstrate that the designed lens has a good self- focusing effect and can deflect the propagation direction of incident waves at the same time. The pentamode conformal Mikaelian lens shows potential applications in underwater imaging, detection and communication.
Modeling of reactive species interphase transport in plasma jet impinging on water
Authors: Kamidollayev Tlegen , Trelles Juan Pablo 
Published: September 2023

Abstract
The interaction between low-temperature atmospheric pressure plasma and water is of primary relevance to an increasing number of applications, from water treatment to medicine. The interaction between an argon plasma jet and water is investigated using a three-dimensional (3D) time-dependent computational model encompassing turbulent gas flow and induced liquid motion, gas–water interface dynamics, multiphase species transport, and gas- and liquid-phase chemical reactions. A single-field approach based on the volume-of-fluid (VoF) method together with conditional volume averaging (CVA), is used to consistently describe the dynamics of the interface together with interfacial reactive mass transfer. Three CVA-based interface species transport models, based on arithmetic, harmonic, and unified mixture species diffusivities, are evaluated. Simulations of a plasma jet impinging on water at different gas flow rates are presented. The resulting deformation of the interface and the production and accumulation of hydrogen peroxide, reactive oxygen, and nitrogen species corroborate prior findings in the research literature showing that higher jet velocities and associated increased interface deformation led to the enhanced transport of reactive species across the plasma-water interface. The VoF-CVA approach appears promising for the modeling of general plasma-liquid multiphase systems.
Detailed pathway for a fast low-temperature synthesis of strongly thermochromic W-doped VO2films with a low transition temperature
Authors: Vlček Jaroslav , Kaufman Michal , Pajdarová Andrea Dagmar , Haviar Stanislav , Čerstvý Radomír , Houška Jiří , Farahani Mina 
Published: September 2023

AbstractWe report the discharge characteristics, and population of chosen atomic neutral (V, O and Ar) and ionic (V+, V2+, O+and Ar+) species in the discharge during low-temperature (350 °C) depositions of W-doped VOxfilms onto a 170 nm thick Y-stabilized ZrO2layer on a 1 mm thick conventional soda-lime glass. The depositions were performed using reactive deep oscillation magnetron sputtering with a pulsed O2flow control and to-substrate O2injection into a high-density plasma in front of the sputter V-W target. The pre-selected critical values of the oxygen partial pressure were in the range from 82 mPa to 92 mPa. Optical emission spectroscopy proved a relatively high density of O atoms in front of the substrate, which is important for production of the W-doped VO2films. It was found that setting of the amount of O2in the gas mixture determines not only the elemental and phase composition of the films and their deposition rate but also the crystallinity of the thermochromic VO2phase in them. The crystalline W-doped VO2films with a low transition temperature of 28 °C exhibited a high modulation of the solar energy transmittance of 8.9%. The results are important for further improvement of this new scalable sputter deposition technique for a fast (53 nm min−1at a target-substrate distance of 100 mm in this work) low-temperature synthesis of high-performance durable thermochromic VO2-based multilayer coatings designed for smart-window applications.
An interpretable health indicator for bearing condition monitoring based on semi-supervised autoencoder latent space variance maximization
Authors: Chen Xieyi , Wang Yi , Meng Lihua , Qin Yi , Tang Baoping 
Published: September 2023

Abstract
Effective health indicator (HI) construction can help equipment managers detect the abnormal state of rotating machinery quickly. However, although the current deep learning-based HI construction methods have good life prediction value, most of them lose the ability to detect device anomalies and little work has been done on model interpretability. Therefore, an interpretable HI construction method based on semi-supervised autoencoder (AE) latent space variance maximization (SSALSVM) was proposed to monitor the health status of bearings. In order to fully excavate degradation features inside the device and make the model focus on the encoding process, a deep convolutional neural network (DCNN) is used as the encoding layer, while only a layer of fully-connected layer is used as the decoding layer. In addition, to enable the latent space to capture the device early degradation point (EDP) successfully, an auxiliary layer is added to the output of the encoder layer. Simultaneously, for improving the sensitivity of the indicator to capture equipment abnormal state and highlight the difference between equipment health state and degradation state, the constraint of variance maximization is added into the latent space. The model optimizing process was presented by observing the projected variance of the test set in latent space of each epoch model. The validity of the proposed HI was verified by comparison experiments on two datasets.