bluuebunny/crossref_metadata_2025 huggingface dataset:
Study on the Interconstruction Phenomenon of Brand Communication and Consumption Culture: Taking Chayan Yuese as an Example
Authors: Wang Xiangbo , Wu Jiyun
Published: October 2024

Nowadays, the traditional way of tea drinking is no longer applicable to the fast-paced social development, in order to meet the new needs of tea drinking, many new tea drink brands have been born in the society. “Chayan Yuese, as a representative of new tea drinks, is worth studying in depth the phenomenon of interconstruction between its brand communication and contemporary consumer culture. This paper adopts literature research method and case study method to conduct the research. It is found that Chayan Yuese’s marketing strategy promotes brand communication and gains good social attention and consumer viscosity. The study also reflects that consumers are highly aware of traditional culture, they are more inclined to personalized products and activities, and social enterprises are gradually guiding consumers towards ‘sustainable development’. The marketing strategy of Chayan Yuese has successfully adapted to the consumer culture while promoting brand communication, and the two have provided a strong impetus for the brand’s development. This paper not only provides a reference for the development of social enterprises, but also expands the direction of the research on new tea drinks.
The role of experiential marketing in shaping brand identity within the fashion industry: A case study of Gentle Monster
Authors: Sun Henan
Published: October 2024

This study examines the role of experiential marketing in building and communicating brand identity, using Gentle Monster as a case study. In the highly competitive fashion industry, brands must continuously differentiate themselves to attract and retain customers. Experiential marketing offers a strategic approach by building emotional connections through immersive customer experiences. Gentle Monster, a South Korean eyewear brand, utilizes innovative retail spaces and artistic installations to create unique shopping experiences. This study explores Gentle Monster’s use of spatial storytelling, varied global themes, and advanced technologies in its offline stores. The findings reveal that these strategies effectively enhance the brand’s identity, resonating with its target audience of trend-conscious millennials and Gen Z. The study concludes with suggestions for deeper customer engagement and managerial implications for other fashion brands, emphasizing the importance of aligning brand identity with experiential marketing. Ultimately, the integration of such immersive experiences can drive brand loyalty and long-term business growth.
The manifestation of female objectification in the marketing content of social media brand advertising: Taking BM brand as an example
Authors: Meng Xining
Published: October 2024

With the rapid development of Internet technology, social media has become a new channel for the dissemination of advertising and marketing content, which is more extensive and guiding. The values conveyed by brand advertising content will even have an impact on overall social values. The female objectification information in social media marketing content has a certain impact on women's psychological and physical health through brand advertising. Women who have long lived under the influence of social media with strong sexual characteristics and objectified information are prone to deepen their self-objectification and become anxious about their appearance. They will internalize a third perspective to view themselves. This paper adopts the interview method and analyzes BM brand marketing content as a case to draw research results. The implicit value orientation in advertising and marketing content has led to a deepening of women's self-objectification, and they always examine and monitor themselves. However, with the development and rise of feminist forces, the phenomenon of self-objectification in some female groups has gradually declined and dissipated in recent years.
Analyzing the narrative context of post-industrial audio-visual works in Northeast China from the absurdity in the documentary Tie Xi Qu: West of the Tracks (2002)
Authors: Yang Yu , Chen Yuxing , Zeng Yarong
Published: October 2024

Since 2019, Northeastern post-industrial culture has been a popular topic of discussion; the general public refers to it as the Northeastern Renaissance. Crises of identity, honor, and faith have been recurring themes in several Northeastern films released in recent years. Furthermore, these cinematic narratives frequently generate somber humor by presenting an enormous contrast between ideals and actuality. The article examines how the post-industrial narrative context of Northeast China has influenced audio-visual cultural products and contemporary Chinese popular culture. To elucidate the fundamental aspect of the Northeast narrative, the article’s author employs the absurd theory of Albert Camus. The main structure and viewpoints of the article are as follows: The first is after presenting individuals’ contemplations on the Northeastern Renaissance-instigated post-industrial narrative of the Northeast. In the following sections, the article explores the narrative context of post-industrial audio-visual works in Northeast China, focusing on the absurdity depicted in the documentary Tie Xi Qu: West of the Tracks (2002). The authors’ analysis reveals how the documentary captures the socio-economic decline and the resulting human experiences of absurdity and dislocation. Key findings indicate that the narrative structure and visual style effectively convey the bleak realities of post-industrial life, offering critical insights into the region’s socio-cultural transformation. These findings suggest that future research should explore the intersection of visual media and social change in other post-industrial contexts.
Influences Between Chinese Ming and Qing Dynasty Porcelain and European Rococo Style
Authors: Yuan Yangzeshan
Published: October 2024

The porcelain of the Ming and Qing dynasties had an extensive and profound mutual influence on the European Rococo art style. The content of this research paper includes the origin of the Rococo style and the influence of the Rococo style on Chinese porcelain from the introduction of the Kangxi Dynasty to the prosperous Qianlong period. The Rococo art style extensively utilizes decorative elements and techniques of Chinese porcelain, reflecting the importance of Chinese porcelain influences on the Rococo art style. This study fills the gap in research on the historical process and artistic techniques of the mutual influence between Chinese Ming and Qing dynasty porcelain and European Rococo style by building on more information about the connections of trade between China and Europe in ceramics and the collection of Chinese style ceramics and Rococo style ceramics by European and Ming and Qing Chinese royalties back in the 18th century. Elucidating the deep influence and development of different cultural exchanges provides a new perspective and value for studying the mutual inspiration of Chinese and Western art.
The Establishment and Collapse of Character Design
Authors: Jiang Liwen
Published: October 2024

The polished image of netizens on social media can confer numerous benefits. Drawing on Goffman's Dramaturgical approach, this study analyzes the rationale and repercussions of crafting idealized personas on social media platforms. This approach is evident in the way individuals curate their online presence. Enhancing one's image can boost personal confidence in social interactions; however, a falsified portrayal can lead others astray, affecting social trust. In people’s daily lives, this understanding helps us to better comprehend and navigate interpersonal relationships through nuanced social interactions. The Internet cannot fully capture the essence of individuals, and attempts to gain a comprehensive understanding of a public figure solely through online means are often futile. For individuals, any received information should be thoroughly analyzed, moving beyond the idealized facade that others present, examining the underlying substance, and assimilating only credible and genuine information. By applying the theory of dramaturgy to analyze social images both on stage and behind the scenes, one can objectively assess the true intentions behind the creation of social personas. Those seeking greater benefits may resort to excessive packaging to deceive the public, necessitating more discernment and critical thinking in social interactions to prevent being misled.
Effects of ‘Sudden Bursts of Popularity’ on social media
Authors: Xu Jiaqi
Published: October 2024

With the development of the Internet, social media become an important way to disseminate information. Words and events spread quickly, and so do people. Today, there are many chances when a characteristic of one single person is exaggerated, leading to him or her becoming popular and suddenly going viral on the Internet. This seems to give people the illusion of becoming more connected to each other. However, there are good and bad effects behind the phenomenon, and this article focuses on discussing them. The research mainly focuses on the effect of the phenomenon, using methods of case and theory analysis to discuss the effects, mainly the bad ones. The finding is that there are negative effects on different groups of people from the person himself or herself, the audience, and young people. It comes to the suggestion that it is important to improve media literacy and emphasise value dissemination.
Exploring Folk Culture in Mo Yan's Novels from an Animal Perspective: A Case Study of Life and Death Are Wearing Me Out
Authors: Chen Ruiyi
Published: October 2024

In the novel Life and Death Are Wearing Me Out, Mo Yan integrates extensive folk culture, including proverbs, folklore, and folk art, which carries significant cultural meaning. This paper systematically analyzes three primary types of folk culture present in Life and Death Are Wearing Me Out through the lens of animal narration: agricultural customs, market customs, and folk beliefs. Regarding agricultural customs, this study illustrates the unique folk agricultural practices of Gaomi from the perspectives of animal husbandry and land cultivation. In terms of market customs, the paper examines changes in market folk culture through livestock trading and processions, reflecting the era's characteristics. As for folk beliefs, the discussion is divided into reverence for humanity and admiration for wildness, showcasing the animal worship mindset prevalent in Gaomi. This approach further expands and innovates the research perspective on the folk culture within Life and Death Are Wearing Me Out, enabling a deeper and more comprehensive understanding of the significance of the author's folk writing.
Similarities and Differences in Revenge - A Comparison between Lu Xun's Forging the Swords and Wang Zengqi's Revenge
Authors: Xiao Yuchen
Published: October 2024

In the history of Chinese new literature, the theme of revenge has rich artistic expression. In Lu Xun's “Cast Sword”, the revenge between the ruler between the eyebrows and the “black man” Yan Zhiao shows the glory of the avenger's humanity, and also expresses the doubt about the meaning of the act of “revenge” itself. Wang Zengqi's Revenge, on the other hand, reveals the struggle and relief in the psychology of revenge by constructing a symbolic revenge scene. This study takes Lu Xun's Forging the Swords and Wang Zengqi's Revenge as examples to compare the difference of the action of “revenge” in the two works. Lu Xun's Forging the Swords and Wang Zengqi's Revenge are two revenge-themed novels, which are based on the same revenge story, but show different forms in characterisation and story ending. Both of them also show the characters' revenge and resistance to revenge, and the incompleteness of revenge, so as to deconstruct the revenge. This difference and similarity is caused by the writers' personal experience, social and period background, and is a reflection of the influence of a specific period on the aesthetic value orientation.
‘No more myself but a colander’: Dimensions of death and vitality in Alice Oswald’s Falling Awake
Authors: Xia Hailan
Published: October 2024

Winner of multiple prestigious awards, contemporary English poet Alice Oswald is considered one of the leading voices in modern poetry. In her seventh poetry collection, Falling Awake, Oswald has crafted a poetic image of death that diverges from the traditional conceptions of death as morbid and a source of anxiety. This article examines Oswald’s depiction of death in Falling Awake within the framework of German-American philosophy academic Peter Koestenbaum’s theory of the two dimensions of death. In her exploration of the physical and metaphysical dimensions of death, the ‘death of another’ and the ‘death of myself’, Oswald actively investigates their roles as agents of erosion and their relationship with life and vitality. This essay analyses a selection of poems from Falling Awake in accordance with Koestenbaum’s dimensions of death, arguing that in her illustration of death, Oswald conceptualises it as a reminder to sustain life and vitality, and as a process in the cycle of life that fosters the disintegration and diversification of the individual, thereby enabling the emergence of new life forms and the enhancement of the vitality of the macrocosm.
Zur Bedeutung von Selen für Sport und die Regeneration der
Muskulatur
Authors: Schomburg Lutz
Published: October 2024

Sport hat positive Auswirkungen auf die Muskulatur, den Metabolismus, die
kognitiven Fähigkeiten und deren Erhalt. Neue präklinische Modelle und
Humanstudien unterstreichen die große Bedeutung des essenziellen Spurenelements
Selen und der davon abhängigen Selenoproteine, besonders für die
muskuloskeletale Entwicklung, Regeneration nach Belastung, Energiebereitstellung
und die positiven gesundheitlichen Wirkungen von Sport. Hierbei kommt der
Expression des Selentransporters SELENOP eine Schlüsselstellung zu; ein Selen-
und SELENOP-Mangel ist ein Risikofaktor für geringe Leistungsfähigkeit, fehlende
positive Effekte von Sport und verzögerte Regeneration nach hoher Belastung.
Allerdings darf keine übermäßige Zufuhr erfolgen, um Toxizität zu vermeiden und
optimale Trainingseffekte zu erzielen.
Bioenergetische Verfahren bei Nahrungsmittelunverträglichkeiten und Allergien
Authors: Köhler Bodo
Published: October 2024

Die Allergie beherrscht heute die Arztpraxen. Auch wenn viele Patienten mit ganz anderen Symptomen kommen, steckt oftmals eine Allergie dahinter. Es wäre nun völlig falsch, nach einem linearen Denkansatz zu handeln und die Allergie (die ja nur ein Symptom darstellt) als Ursache dieser Erkrankungen zu sehen. Richtig wäre, dahinter das gleiche anabole Reaktionsmuster zu erkennen, das auch anderen Krankheiten zugrunde liegt, mit all den vielfältigen, ganz individuellen Ursachen. Das Ziel auf somatischer Ebene sollte deshalb immer die Lösung der Blockade des katabolen Stoffwechsels sein. Da es sich aber i. d. R. um einen aktiven Schutzmechanismus des Organismus handelt, müssen die wahren Gründe herausgearbeitet werden. Diese liegen im Kontrollverlust. Dieser kann sich bereits auf der seelischen Ebene zeigen, weshalb sich hier die Notwendigkeit einer ganzheitlichen Betrachtung von Geist, Seele und Körper wieder von neuem zeigt.
Asymptotic behavior of non-autonomous fractional stochastic lattice FitzHugh–Nagumo system driven by linear mixed white noise
Authors: Xiao Ke , Chen Yiju , Shen Jun
Published: October 2024

This paper is concerned with the asymptotic behavior of the non-autonomous fractional stochastic lattice FitzHugh–Nagumo system driven by the linear mixed white noise, which simultaneously contains linear additive noise and multiplicative noise. For the sake of the long-term behavior of the system we considered, we need to utilize a different Ornstein–Uhlenbeck transformation than the general one. First, the existence and uniqueness of pullback random attractors are demonstrated. Then, we prove the upper semicontinuity of random attractors when the intensity of noise approaches zero.
Entropy production of quantum reset models
Authors: Haack Géraldine , Joye Alain
Published: October 2024

We analyze the entropy production of Quantum Reset Models (QRMs) corresponding to quantum dynamical semigroups driven by Lindbladians motivated by a probabilistic description of dissipation in an external environment. We investigate the strict positivity of entropy production for Lindbladians given as sums of QRMs, when the Hamiltonian of the total Lindbladian is split as an affine combination of Hamiltonians of the individual QRMs. In this setup, we derive conditions on the coefficients of the combination and on the reset states ensuring either positive or zero entropy production. Second, we deal with a tri-partite system subject at its ends to two independent QRMs and a weak coupling Hamiltonian. The latter is split as an affine combination of individual Hamiltonians, and we provide necessary and sufficient conditions ensuring strict positivity of the entropy production to leading order, with the possible exception of one affine combination. We apply these results to a physically motivated model and exhibit explicit expressions for the leading orders steady-state solution, entropy production and entropy fluxes. Moreover, these approximations are numerically shown to hold beyond the expected regimes.
Broadband polarization-adjustable antenna realized by waveguide circular polarizers
Authors: Yan Feng , Zhuang Qinghe , Yang Meng , Kang Kaiyuan , Xiong Zhengfeng , Yuan Chengwei
Published: October 2024

A broadband polarization-adjustable antenna realized by two waveguide circular polarizers is proposed in this paper. The antenna consists of a rectangular-to-circular transition waveguide, two identically structured rectangular slot circular polarizers, and a conical horn, all connected in sequence. By rotating the two circular polarizers to specific angles, the antenna can switch among four polarization modes: horizontal polarization, vertical polarization, left-hand circular polarization, and right-hand circular polarization. The antenna polarization adjustment principle is thoroughly analyzed. Taking the X-band polarization-adjustable antenna as an example, simulation and optimization were performed, and a prototype was fabricated and measured. The antenna’s reflection coefficient is below −18 dB across all polarization modes from 9.2 to 10 GHz. In linear polarized modes, gains exceed 10.5 dBi. For circular polarized modes, the gains align with those of linear modes, with an axial ratio of less than 1 dB in the operating frequency band. The measured results are consistent with the simulation results, confirming its excellent polarization adjustment performance and potential for high power microwave applications.
Photoacoustic spectroscopy with a widely tunable narrowband fiber-feedback optical parametric oscillator
Authors: Schmid Luca , Kadriu Florent , Kuppel Sandro , Floess Moritz , Steinle Tobias , Giessen Harald
Published: October 2024

Trace gas analysis is a key tool for the investigation of man-made environmental pollution as well as for early detection of respiratory diseases. To detect tiny concentrations, sensitive methods such as cavity ring down spectroscopy or plasmonic sensors have been used. Here, we demonstrate the combination of the photoacoustic effect in a classical cell with a novel, rapidly tunable, narrowband fiber-feedback optical parametric oscillator. The high sensitivity of photoacoustic cells and the extremely narrow linewidth as well as the wide and rapid tunability of the fiber-feedback optical parametric oscillator enable a high resolution of the rotational and vibrational bands of molecules in the near-infrared region. Photoacoustic spectra of methane, carbon dioxide, and water at ambient pressure are obtained in a broad spectral range and compared to high-resolution transmission molecular absorption database. In particular, scanning the entire carbon dioxide overtone around 4965 cm−1 at 2000 ppm takes 185 s with a signal-to-noise ratio of 31. This approach enables a wide tunability in the entire near- and mid-infrared spectral region suitable for many environmental and medical applications.
Collective quantum dynamics with distant quantum emitters in slow-wave nanoplasmonic waveguides
Authors: Jalali-Mola Zahra , Asgarnezhad-Zorgabad Saeid , Hess Ortwin
Published: October 2024

We consider a slow-wave nanoplasmonic waveguide system with spatially separated (distant) quantum emitters. Based on a nanoplasmonic waveguide quantum electrodynamic theory the emerging non-Markovian collective plasmon-polariton dynamics directly reflects the spatial positioning of the quantum emitters. A phase-space analysis allows us to distinguish between collectivity and cooperativity and the transition between these regimes. For distant emitters, temporal decoherence is reflected in anomalous phase-space evolution. In the spectral domain, collectivity emerges as a resonant single Lorentzian peak with two weak sidebands, while cooperativity manifests as a Fano-like resonance normal-mode splitting. Remarkably, even for distant quantum emitters, we achieve collective multiple quantum emitter dynamics with non-vanishing excitation and vanishing instantaneous emission, establishing an interaction-based quantum nanoplasmonic memory with key relevance in quantum nanoplasmonic networks.
Constraints of the teleparallel equivalent of general relativity in a gauge
Authors: Okołów Andrzej
Published: October 2024

We consider a specific Hamiltonian formulation of the Teleparallel Equivalent of General Relativity, where the canonical variables are expressed by means of differential forms. We show that some “position” variables of this formulation can be always gauge-transformed to zero. In this gauge the constraints of the theory become simpler, and the other “position” variables acquire a nice geometric interpretation that allows for an alternative, clearer form of the constraints. Based on these results we derive some exact solutions to the constraints.
Stability enhancement with nonlinear gain modulation in high-power SBS-PCM
Authors: Chen Yifu , Bai Zhenxu , Tan Bowen , Jin Duo , Wang Tianqi , Zhao Chen , Wang Kun , Wang Yulei , Ding Yu , Lu Zhiwei
Published: October 2024

Stimulated Brillouin scattering (SBS) is an effective method for compensating wavefront aberrations in high-energy lasers due to its phase conjugation property. However, SBS phase conjugate mirrors (SBS-PCMs) under high-power pumping often suffer from significant spatial aberrations and decreased energy reflectivity, indicating instability in the nonlinear gain. Here, a nonlinear gain modulation method is proposed to realize the stable output. Experiments show that the energy reflectivity of SBS decreased due to the thermal effect in high-repetition-rate pumped SBS-PCMs. The nonlinear gain modulation was accomplished with simultaneous adaptation of radial and axial focusing parameters resulting in a higher SBS gain under short-focus conditions. The feasibility of the method was experimentally confirmed by obtaining SBS energy reflectivity stabilized at 60%, while the root mean squares of steady-state Stokes energy and pulse time delay enhanced to 1.97% and 1.81%, respectively, in an HT-230 medium. This scheme ensures stable and efficient SBS output under high-power pumping, which is of great significance for expanding the application of SBS-PCMs in high-repetition-rate laser systems.
Tunable annealing effect to enhance structural and magnetic properties of spinel cobalt magnesium ferrite nanoparticles
Authors: Mondal Preanka , Akter Sumi , Roy Probal , Elius Iftakhar Bin , Khan M. N. I. , Sikder S. S.
Published: October 2024

Cobalt magnesium ferrite nanoparticles, with the chemical formula Co0.5Mg0.5Fe2O4 (CMFO), were synthesized via co-precipitation and subjected to annealing at 200–800 °C with a step size of 200. Thermal analysis for the as-dried sample was investigated through thermogravimetric analysis (TGA) and differential thermal analysis (DTA). The presence of a plateau region in the DTA curve above 366 °C, combined with the slight weight loss noted in the TGA curve, indicates that the ferrite sample, specifically CMFO, has successfully transitioned into its final phase. X-ray diffraction and Fourier transform infrared spectroscopy (FTIR) analysis unveiled the formation of spinel CMFO NPs belonging to the Fd-3m space group. The Williamson–Hall method showed particle size increasing from 8.20 to 52.15 nm and tensile microstrain decreasing from 6.90 to 1.84 × 10−3 with higher annealing temperatures, noted by the shift of the (311) plane. TEM images confirmed the formation of smaller nanoparticles with minimal agglomeration. Particles of nearly uniform size are achieved at the optimum annealing temperature of 600 °C, owing to its narrow distribution profile. The experimental magnetization data were analyzed using the Langevin function and the law of approach to saturation to determine the saturation magnetization, spanning from 15.46 to 43.90 emu/g. The magnetic characteristics of the annealed samples exhibited a rise in coercive force, reaching up to 349.74 Oe with the elevation of the annealing temperature. The range of attributes exhibited by CMFO makes it highly advantageous for various applications, including sensor technology, high-frequency devices, and energy storage devices.
Phonon transmission and localization in disordered side branching graphene aperiodic lattice
Authors: Zheng Yu-Hao , Zeng Yu-Jia , Xie Guo-Feng , Zhou Wu-Xing
Published: October 2024

Blocking phonon transport via localized resonance is a crucial method for controlling heat transfer and enhancing thermoelectric performance in nanostructures. However, the effects of disorder and asymmetrically distributed side branches on thermal transport and local resonant hybridization in two-dimensional materials remain insufficiently understood. In this work, we investigate the influence of symmetric and asymmetric disordered side branches on phonon transport in branching graphene superlattices. Our results demonstrate that aperiodic superlattices (ap-SL) can reduce thermal conductivity by up to 21% compared to periodic superlattices. The reduction in thermal conductivity in ap-SL is primarily due to phonon Anderson localization caused by disordered side branches. Interestingly, the localization lengths of symmetric and asymmetric ap-SLs are comparable, resulting in similar thermal conductivity in both cases. This finding suggests that the randomness in the upper and lower branches of asymmetric graphene superlattices does not significantly affect phonon transmission. Consequently, our work indicates that differences in symmetry between the upper and lower edge branches of graphene nanoribbons can be disregarded during experimental preparation without influencing their thermal conductivity.
Emerging non-volatile memory (NVM) technologies based nano-oscillators: Materials to applications
Authors: Kumar Manoj , Suri Manan
Published: October 2024

This comprehensive study provides a detailed review toward ongoing research on emerging non-volatile memory technologies based nano-oscillators, i.e., from the perspective of materials to applications. Depending on the materials used to fabricate them, the whole class of emerging nano-oscillators has been broadly classified into two categories: (i) electronic and (ii) spintronic oscillators. Moreover, various material-compositions explored for fabricating the oscillatory devices, their physical properties responsible for generating the oscillations, and device architectures are thoroughly reviewed. Furthermore, various advanced computing applications (i.e., realized through these oscillatory devices), such as Internet of Things, neuro-inspired computing, and sensing, are also studied and their key attributes are highlighted.
Quantum enhanced mechanical rotation sensing using wavefront photonic gears
Authors: Yesharim Ofir , Tshuva Guy , Arie Ady
Published: October 2024

Quantum metrology leverages quantum correlations for enhanced parameter estimation. Recently, structured light enabled increased resolution and sensitivity in quantum metrology systems. However, lossy and complex setups impacting photon flux hinder true quantum advantage while using high dimensional structured light. We introduce a straightforward mechanical rotation quantum sensing mechanism, employing high-dimensional structured light and use it with a high-flux (45 000 coincidence counts per second) N00N state source with N = 2. The system utilizes two opposite spiral phase plates with topological charge of up to ℓ = 16 that converts mechanical rotation into wavefront phase shifts and exhibit a 16-fold enhanced super-resolution and 25-fold enhanced sensitivity between different topological charges, while retaining the acquisition times, and with negligible change in coincidence count. Furthermore, the high efficiency together with the high photon flux enables detection of mechanical angular acceleration in real-time. Our approach paves the way for highly sensitive quantum measurements, applicable to various interferometric schemes.
Control of the von Kármán vortex street with focusing and vectoring of jet using synthetic jet array
Authors: Mittal Vardhan , Arumuru Venugopal
Published: October 2024

In the present study, a novel flow control technique based on jet focusing and vectoring from a synthetic jet array (SJA) for controlling the wake of a bluff body is proposed and demonstrated. A numerical investigation into the flow past a square cylinder modified by the SJA has been carried out at a free stream Reynolds Number of 100. The SJA consists of four independently controlled synthetic jet actuators operating at a peak velocity of eight times the free stream and fifteen times the natural vortex shedding frequency of the square cylinder. The SJA is operated in two different regimes; a focusing regime involving phase delay (Δφ) with non-linear variation between the actuators and a vectoring regime with a linear phase delay without changing the geometric or operating parameters of the SJA. It has been found that jet focusing is able to reduce the coefficient of drag by as much as 43% for Δφ=90°. Focusing is also observed to reduce the fluctuations in the wake velocity with the maximum reduction in fluctuations also corresponding to Δφ=90°. Jet vectoring is able to deflect the von Kármán vortex street in a singular direction along with shifting of the front stagnation point with maximum deflection for Δφ=60°. Furthermore, vectoring leads to an asymmetry in the wake velocity field with the shifting of the velocity deficit region in the direction of the vectoring along with an asymmetry in the wake velocity fluctuations. This novel approach toward synthetic jet induced active flow control allows for greater manipulation of the flow field characteristics of bluff bodies than present methods with applications in areas of underwater and micro air vehicle maneuvering, automobile, and building aerodynamics among others.
Strength formation mechanism and composition design of fly-ash and carbide-slag-stabilized mine solid waste road base
Authors: Ma Jin , Tong Jia
Published: October 2024

To achieve effective utilization of large-scale solid waste, this study prepared subgrade materials using mine waste, fly ash, and carbide slag as raw materials. The effects of the basic structure and composition ratio of the three raw materials on the performance of the subgrade materials were investigated. The mechanisms and strength enhancement effects of fly ash, carbide slag, and fly ash–carbide slag composite-stabilized mine solid waste were analyzed. The optimal mixing ratio of the subgrade materials was determined. When the mass ratio of carbide slag to fly ash was 1:4 and the total addition amount was 20%, the subgrade material had an optimal moisture content of 16.8%, maximum dry density of 1.70 g/cm3, and 90-day compressive strength of 8.51 MPa. This fully solid waste inorganic binder-stabilized subgrade material can effectively utilize large quantities of solid waste and meet the performance requirements of subgrade materials, thereby providing a good technical solution for large-scale solid waste disposal.
Recent achievements in nonlinear dynamics, synchronization, and networks
Authors: Ghosh Dibakar , Marwan Norbert , Small Michael , Zhou Changsong , Heitzig Jobst , Koseska Aneta , Ji Peng , Kiss Istvan Z.
Published: October 2024

This Focus Issue covers recent developments in the broad areas of nonlinear dynamics, synchronization, and emergent behavior in dynamical networks. It targets current progress on issues such as time series analysis and data-driven modeling from real data such as climate, brain, and social dynamics. Predicting and detecting early warning signals of extreme climate conditions, epileptic seizures, or other catastrophic conditions are the primary tasks from real or experimental data. Exploring machine-based learning from real data for the purpose of modeling and prediction is an emerging area. Application of the evolutionary game theory in biological systems (eco-evolutionary game theory) is a developing direction for future research for the purpose of understanding the interactions between species. Recent progress of research on bifurcations, time series analysis, control, and time-delay systems is also discussed.
GSH-responsive magnetic mesoporous silica nanoparticles for efficient controlled drug delivery in tumor cells
Authors: Zhang Di , He Xu , Wei Yongdong , Fan Qi , Qiao Jie , Jin Gang , Li Ningbo
Published: October 2024

In this study, glutathione (GSH)-responsive magnetic mesoporous silica nanoparticles grafted by disulfide organosilicon (SMNPs) were synthesized, characterized, and evaluated as controlled drug carriers. The nanoparticles exhibited consistent dispersion, considerable drug-loading capacity, and high saturation magnetization. Importantly, they demonstrated the ability to release doxorubicin (DOX) by up to 43% in a reducing tumor microenvironment, highlighting their potential for targeted therapy. In addition, the SMNPs displayed favorable biocompatibility, making them suitable for biomedical applications. Most notably, the SMNPs loaded with DOX effectively killed both HepG2 and HeLa cancer cells, while also showing efficient cellular uptake in HeLa cells. These findings suggest that SMNPs are a promising platform for magnetic-targeted and GSH-responsive delivery of therapeutic agents.
Recent surveys of the sea otter (Enhydra lutris) population on Kuril Islands
Authors: Popov Igor , Iurmanov Anton
Published: October 2024

Context Sea otters, an endangered species, require regular assessments of their distribution and abundance. These animals inhabit the coastal waters of the North Pacific, traversing from Japan through the Kurils, southern Kamchatka, Commander and Aleutian Islands, and the coasts of North America, to California. Although populations in America and the Commander Islands have been consistently monitored over recent decades, the same cannot be said for the Kuril Islands. Aim This study aims to estimate the state of sea otter populations on the Kuril Islands. Methods The study area encompassed a section of the Kuril archipelago, including Iturup, Urup, Broughton, Chirpoy, and Simushir Islands, surveyed from 2019 to 2023. Sea otters were counted along sections of the coastline, and published sources on other Kuril Islands were analysed. Key results There are several hundred sea otters within surveyed area, whereas in 1960–1980 ~2000 were reported. The total number of sea otters on the archipelago hardly exceeds 3000. The initial or normal number is not known, but the information on hunting indicates that it was much bigger. Up to the end of 19th century, at least ‘one thousand individuals’ had been harvested annually over several decades; this means that the total number was at least several tens of thousands. Conclusions Sea otter populations on the Kuril Islands are in decline, with poaching in the recent past identified as significant contributing factor in a part of the archipelago. Implications Urgent conservation measures are imperative to address the decline of sea otter populations.
Developing forebrain synapses are uniquely vulnerable to sleep loss
Authors: Gay Sean M. , Chartampila Elissavet , Lord Julia S. , Grizzard Sawyer , Maisashvili Tekla , Ye Michael , Barker Natalie K. , Mordant Angie L. , Mills C. Allie , Herring Laura E. , Diering Graham H.
Published: October 2024

Sleep is an essential behavior that supports lifelong brain health and cognition. Neuronal synapses are a major target for restorative sleep function and a locus of dysfunction in response to sleep deprivation (SD). Synapse density is highly dynamic during development, becoming stabilized with maturation to adulthood, suggesting sleep exerts distinct synaptic functions between development and adulthood. Importantly, problems with sleep are common in neurodevelopmental disorders including autism spectrum disorder (ASD). Moreover, early life sleep disruption in animal models causes long-lasting changes in adult behavior. Divergent plasticity engaged during sleep necessarily implies that developing and adult synapses will show differential vulnerability to SD. To investigate distinct sleep functions and mechanisms of vulnerability to SD across development, we systematically examined the behavioral and molecular responses to acute SD between juvenile (P21 to P28), adolescent (P42 to P49), and adult (P70 to P100) mice of both sexes. Compared to adults, juveniles lack robust adaptations to SD, precipitating cognitive deficits in the novel object recognition task. Subcellular fractionation, combined with proteome and phosphoproteome analysis revealed the developing synapse is profoundly vulnerable to SD, whereas adults exhibit comparative resilience. SD in juveniles, and not older mice, aberrantly drives induction of synapse potentiation, synaptogenesis, and expression of perineuronal nets. Our analysis further reveals the developing synapse as a putative node of convergence between vulnerability to SD and ASD genetic risk. Together, our systematic analysis supports a distinct developmental function of sleep and reveals how sleep disruption impacts key aspects of brain development, providing insights for ASD susceptibility.
Investigation of students repeating calculus-based introductory physics courses by gender, ethnicity and race
Authors: Santana Lisabeth Marie , Malespina Alysa , Li Yangqiuting , Singh Chandralekha
Published: October 2024

We analyze institutional data from large introductory calculus-based physics courses at a large public research university in the US in which the students enrolled in these courses majored in engineering, chemistry, physics, computer science, and mathematics. The data were analyzed from two introductory physics courses that are required for most of these students and they are often considered ‘weed out’ courses in that a poor performance in these courses can severely hinder or modify students long term career goal achievement. In particular, these courses can act as gatekeepers for many students and those who do not perform to their satisfaction the first time often repeat these courses, particularly if they aspire to remain in their major. We present findings by analyzing data from different demographic groups based upon gender, ethnicity and race for how likely were the students from different demographic groups to repeat these introductory calculus-based physics courses and we compared outcomes of students who repeated with those who did not. We also analysed and found similar patterns in the calculus courses that are co-requisites for the physics courses. These findings can help physics departments contemplate strategies for providing personalized support to help all students succeed in these calculus-based physics courses so that students do not have to repeat these courses, which are pivotal for accomplishing their long-term career goals.
Nanoplasma formation and expansion ignited by an intense FEL: a study using pump-probe electron spectroscopy
Authors: Niozu Akinobu , Fukuzawa Hironobu , Hagiya Toru , Yamamoto Akifumi , You Daehyun , Saito Shu , Ishimura Yudai , Togashi Tadashi , Owada Shigeki , Tono Kensuke , Yabashi Makina , Wada Shin-ichi , Matsuda Kazuhiro , Ueda Kiyoshi , Nagaya Kiyonobu
Published: October 2024

We demonstrate real-time observations of nanoplasma formation and expansion using intense extreme-ultraviolet (XUV) and near-infrared (NIR) pump–probe electron spectroscopy. We identified the formation of a nanoplasma by the sudden enhancement of low-energy electron emission within a few tens of femtoseconds after XUV excitation, which indicates considerable heating of the clusters by the NIR field. We probed the subsequent expansion of the nanoplasma by monitoring the transient resonant enhancement of high-energy electron emission. The dependence of the resonance on the XUV intensity is explained by the expansion speed of the XUV-induced nanoplasma.
Interface properties study of black silicon solar cells with front surface a-Si:H/c-Si heterojunction
Authors: Gudovskikh A S , Baranov A I , Uvarov A V , Vyacheslavova E A , Maksimova A A , Salimi A , Kirilenko D A , Aydın O , Turan R , Nasser H
Published: October 2024

The exceptionally low reflectance of black silicon (Si) across a broad wavelength range makes it an intriguing surface texture for solar cell applications. Si heterojunction (SHJ) solar cells fabricated on black Si formed by dry reactive ion etching using inductive coupled plasma on n-type Si are explored. The study is focused on the properties of the a-Si:H/ crystalline silicon interface, being a key issue for the photovoltaic performance of SHJ. Deep-level transient spectroscopy detected no radiation defect in Si after the etching. The surface of black Si was passivated with an intrinsic a-Si:H layer, followed by the deposition of p-type and n-type a-Si:H on the front and back sides, respectively. The SHJ solar cell photovoltaic performance based on black Si is strongly influenced by defect density at the a-Si:H/Si interface. Admittance spectroscopy and effective charge carrier lifetime measurements demonstrate that interface defect density decreases with the increase of (i) a-Si:H thickness. The value of 0.75 ms effective charge carrier lifetime was reached for single (i) a-Si:H layer passivation and 0.25 ms when (p)a-Si:H was deposited over the intrinsic a-Si:H layer. The measured open circuit voltage values for the SHJ solar cells increase with the (i) a-Si:H layer thickness reaching 658 mV. However, the fill factor decreases with increasing (i) a-Si:H layer thickness, limiting the efficiency at the maximum value below 14% due to the thickness uniformity of the a-Si:H layer. The development of conformal growth of a-Si:H is a key issue for further improvement of black Si heterojunction solar cell photovoltaic performance.
Tunable electronic and optical properties of BAs/InS heterojunction based on first-principles calculations
Authors: Ma Qianli , Ni Lei , Li Duan , Zhang Yan
Published: October 2024

The geometric structure, electronic properties, and optical characteristics of BAs/InS heterostructures are investigated in the present study through the first-principles calculations of Density Functional Theory. The analysis shows that H1-stacking BAs/InS heterostructures with an interlayer distance of 3.6 Å have excellent stability compared with monolayer materials. Furthermore, this heterostructure is classified as a Type-II heterostructure, which promotes the formation of photo-generated electron-hole pairs. The band alignment, direction and magnitude of electronic transfer in BAs/InS heterostructures can be fine-tuned by applying the external electric field and stress, which can also induce a transition from Type-II to Type-I behavior, the indirect bandgap to direct bandgap also occurs. Moreover, absorption coefficient of the heterostructure can also be moderately enhanced and adjusted by external electric fields and stress. These findings suggest that BAs/InS heterostructures have potential applications in photoelectric detectors and laser technology.
LW-MorphCNN: a lightweight morphological attention-based subtype classification network for lung cancer
Authors: Fan Xiangsuo , Lu Yingqi , Hu Bo , Shi Yuqiu , Sun Borui
Published: October 2024

Lung cancer is generally considered one of the most deadly cancers globally. If it can be identified early and diagnosed correctly, the survival probability of patients can be significantly improved. In this process, histopathological examination is a commonly used method for diagnosing and detecting lung cancer. It is crucial to accurately identify lung cancer subtypes from histopathological images, as this helps doctors formulate effective treatment plans. However, the visual inspection in histopathological diagnosis requires a large amount of time and also depends on the subjective perception of clinicians. Therefore, this paper proposes a lightweight lung cancer subtype classification network based on morphological attention (LW-MorphCNN), which is used to automatically classify the histopathological images of benign lung tumors, ADC (adenocarcinoma), and SCC (squamous cell carcinoma) provided in the public dataset LC25000 (Lung and Colon). This paper takes histopathological images as input and conducts a comparative analysis with classic networks such as VGG16, VGG19, DenseNet121, and ResNet50, as well as existing classification methods proposed in the same work. The network proposed in this paper is superior to other networks in terms of parameter quantity and performance, with an accuracy rate and F1 - score reaching 99.47% and 99.44% respectively. Clinicians can install the provided LW-MorphCNN in the hospital to confirm the diagnosis results.
Response of the poloidal rotation to resonant magnetic perturbations in the EAST tokamak
Authors: Wang S F , Zhou C , Liu A D , Zhuang G , Sun Y W , Gu S , Wang S X , Liu H Q , Dai Z L , Wang H H , Zhang J , Zhong X M , Feng X , Gao L T , Shi W X , Qiu S C , Li L X , Chen X Y , Zhang Y Y , Xie P C , Ye C , Yang H
Published: October 2024

In this paper the response of the plasma poloidal rotation to resonant magnetic perturbations (RMPs) is investigated in EAST Tokamak using the multi-channel Doppler backscattering (DBS) system. It shows that the poloidal rotation spins up towards the ion-diamagnetic drift direction with increasing external perturbation field, which will reduce the edge shear. In ohmically heated discharges, the n = 1 RMP can only affect the edge poloidal rotation when the RMP coil current is small, and the influence will gradually reach the inner regions with increasing RMP coil current. At the moment of the n = 1 RMP penetration, all the poloidal rotations measured by the DBS will increase significantly, and then they will keep almost unchanged with the increase of the RMP coil current. In H-mode discharge, the poloidal rotation is significantly influenced by the n = 2 RMP, and the edge velocity well even reverses, along with edge-localized modes (ELMs) mitigation. However, in the same shot, the n = 4 RMP with the same coil current amplitude can hardly affect the poloidal rotations and the behavior of ELMs.