bluuebunny/crossref_metadata_2025_split huggingface dataset:
Self-supervised context-aware correlation filter for robust landmark tracking in liver ultrasound sequences
Authors: Ma Lin , Wang Junjie , Gong Shu , Lan Libin , Geng Li , Wang Siping , Feng Xin 
Published: February 2024

Abstract

Objectives
Respiratory motion-induced displacement of internal organs poses a significant challenge in image-guided radiation therapy, particularly affecting liver landmark tracking accuracy.

Methods
Addressing this concern, we propose a self-supervised method for robust landmark tracking in long liver ultrasound sequences. Our approach leverages a Siamese-based context-aware correlation filter network, trained by using the consistency loss between forward tracking and back verification. By effectively utilizing both labeled and unlabeled liver ultrasound images, our model,
Siam-CCF
, mitigates the impact of speckle noise and artifacts on ultrasonic image tracking by a context-aware correlation filter. Additionally, a fusion strategy for template patch feature helps the tracker to obtain rich appearance information around the point-landmark.

Results

Siam-CCF
achieves a mean tracking error of 0.79 ± 0.83 mm at a frame rate of 118.6 fps, exhibiting a superior speed-accuracy trade-off on the public MICCAI 2015 Challenge on Liver Ultrasound Tracking (CLUST2015) 2D dataset. This performance won the 5th place on the CLUST2015 2D point-landmark tracking task.

Conclusions
Extensive experiments validate the effectiveness of our proposed approach, establishing it as one of the top-performing techniques on the CLUST2015 online leaderboard at the time of this submission.
Dual-band circular polarized microstrip antenna for GNSS application
Authors: Wang Haiyang , Zhang Bianmei , Liu Xiaoming , Yang Xiaofan , Zhang Ran , Wang Ye 
Published: February 2024

Abstract
A dual-band circular polarized antenna with broad bandwidth is proposed. Two circular grooves with different radii are carved on the ground to generate two frequency bands. Two rectangular slots are engraved on the outside of the circular groove. By adjusting the length of the two slots, this antenna can radiate right-handed circularly polarized (RHCP) waves at two frequency bands, which can cover GPS L5 (1.176 GHz), L2 (1.227 GHz), L1 (1.575 GHz), BDS, GALILEO, and GLONASS bands. The measured −10 dB bandwidth is 46.3 % (1.13–1.81 GHz) and 3 dB axial ratio bandwidths are 15.6 % (1.11–1.30 GHz) and 17.8 % (1.38–1.65 GHz). The measured gains are 2.51 dBi and 2.67 dBi at 1.2 GHz and 1.56 GHz, respectively.
The effects of PETTLEP imagery and action observation on strength performance of a leg extension and flexion task
Authors: Aiken Christopher A. , Post Phillip G. , Munger Cameron N. , Sampson Jack J. , Cochran Sean M. , Zhuravleva Tatiana A. 
Published: February 2024

AbstractObjectivesResearch suggests that imagery can be enhanced by incorporating action observation into theoretically based imagery interventions. The purpose of the study was to investigate the effects of PETTLEP imagery intervention on strength performance.MethodsAll individuals completed the Mental Imagery Questionnaire-III and were tested on peak force production with the quadriceps and hamstrings using the Biodex dynamometer. Participants were randomly placed into imagery with action observation (IAO), physical practice (PP), or control (CON) groups for a five-week intervention. Following post-testing, individuals completed the Intrinsic Motivation Inventory (IMI).ResultsBoth PP and IAO significantly improved in isometric quadriceps peak force production when compared to CON (p<0.05). Additionally, PP significantly increased peak force production during isokinetic testing with the quadriceps (p<0.05). No significant changes were observed in the hamstrings (p>0.05). No group differences were found in IMI scores (p>0.05).ConclusionsThe practical and theoretical implications for this research are discussed.
On the Black-Box impossibility of multi-designated verifiers signature schemes from ring signature schemes
Authors: Yamashita Kyosuke , Hara Keisuke 
Published: February 2024

AbstractFrom the work by Laguillaumie and Vergnaud in ICICS’04, it has been widely believed that multi-designated verifiers signature scheme (MDVS) can be constructed from ring signature schemes in general. However, in this article, somewhat surprisingly, we prove that it is impossible to construct an MDVS scheme from a ring signature scheme in a black-box sense (in the standard model). The impossibility stems from the difference between the definitions of unforgeability of the two schemes. To the best of our knowledge, existing works demonstrating the constructions do not provide formal reductions from an MDVS scheme to a ring signature scheme, and thus, the impossibility has been overlooked for a long time.
Searchable encryption with randomized ciphertext and randomized keyword search
Authors: Calderini Marco , Longo Riccardo , Sala Massimiliano , Villa Irene 
Published: February 2024

Abstract
The notion of public-key encryption with keyword search (PEKS) was introduced to search over encrypted data without performing any decryption. In this article, we propose a PEKS scheme in which both the encrypted keyword and the trapdoor are randomized so that the cloud server is not able to recognize identical queries a priori. Our scheme is Ciphertext-Indistinguishabiltity secure in the single-user setting and Trapdoor-Indistinguishability secure in the multi-user setting with a stronger security, i.e., with multi-trapdoor.
Turbulence mitigation in FSO based on turbo coding and equalization
Authors: Hameed Samir M. 
Published: February 2024

Abstract
Free space optical (FSO) communication has gained considerable interest for various applications because of its high speed, security, and low power consumption, which seem like promising advantages for the future. FSO systems are severely constrained by turbulence produced by air temperature and density fluctuations, resulting in scattered and distorted light beams. The capacity and bit error rate (BER) of an FSO link can be influenced by fading brought on by turbulence. Turbulence raises the BER, especially under conditions of moderate and high turbulence. The proposed model suggests using a turbo encoder with an intensity modulator at the FSO transmitter and combining maximum likelihood estimation (MLE), zero-forcing equalization (ZFE), and a turbo decoder for the direct detection receiver. However, MLE does an accurate channel estimate, which minimizes fading and turbulence. ZFE improves the quality of the link even further, while turbo coding lowers the bit error rate by increasing redundancy and greatly enhancing error-correcting capability. The Gamma–Gamma turbulence model simulation showed the proposed system’s superiority over other techniques, which achieved a BER of 10−5 with a signal-to-noise ratio (SNR) of 16 dB for moderate and strong turbulence, respectively. Consequently, even though turbo coding adds redundancy to the signal, it can achieve substantial coding gains that increase FSO capacity.
Lithium niobate thin film electro-optic modulator
Authors: Liu Jikun , Qu Lun , Wu Wei , Jin Chunyan , Chen Zhihao , Gu Zhidong , Liu Weiye , Wang Chenxiong , Zheng Dahuai , Liu Hongde , Cai Wei , Ren Mengxin , Xu Jingjun 
Published: February 2024

Abstract
The linear electro-optic effect offers a valuable means to control light properties via an external electric field. Lithium niobate (LN), with its high electro-optic coefficients and broad optical transparency ranges, stands out as a prominent material for efficient electro-optic modulators. The recent advent of lithium niobate-on-insulator (LNOI) wafers has sparked renewed interest in LN for compact photonic devices. In this study, we present an electro-optic modulator utilizing a thin LN film sandwiched between top and bottom gold (Au) film electrodes, forming a Fabry–Pérot (F–P) resonator. This resonator exhibits spectral resonance shifts under an applied electric field, enabling efficient modulation of reflected light strength. The modulator achieved a 2.3 % modulation amplitude under ±10 V alternating voltage. Our approach not only presents a simpler fabrication process but also offers larger modulation amplitudes compared to previously reported metasurface based LN electro-optic modulators. Our results open up new opportunities for compact electro-optic modulators with applications in beam steering devices, dynamic holograms, and spatial light modulators, and more.
Rational design of arbitrary topology in three-dimensional space via inverse calculation of phase modulation
Authors: Chang Hwanseok , Kwon Sungjoo , Bae Gwangmin , Jeon Seokwoo 
Published: February 2024

Abstract
Recent advances in nanotechnology have led to the emergence of metamaterials with unprecedented properties through precisely controlled topologies. To explore metamaterials with nanoscale topologies, interest in three-dimensional nanofabrication methods has grown and led to rapid production of target nanostructures over large areas. Additionally, inverse design methods have revolutionized materials science, enabling the optimization of microstructures and topologies to achieve the desired properties without extensive experimental cycles. This review highlights the recent progress in inverse design methods applied in proximity-field nanopatterning. It introduces novel approaches, such as adjoint methods and particle swarm optimization, to achieve target topologies and high-resolution nanostructures. Furthermore, machine learning algorithms for inverse design are explored, demonstrating the potential efficacy of the phase-mask design. This comprehensive review offers insights into the progress of inverse design using phase modulation to realize target topologies of nanostructures.
On Minimal Yield and Form Copy: evidence from East Asian languages
Authors: Saito Mamoru 
Published: February 2024

Abstract
The FormCopy (FC) analysis of control proposed by Noam Chomsky develops Norbert Hornstein’s movement analysis. This paper points out that there is inconsistency between both analyses and the standard phase theory. Then, it presents a new definition of phase and the PIC that makes reference to ϕ-feature agreement in order to resolve this inconsistency. Minimal Yield (MY) is one of the conditions on Merge that distinguish the FC analysis from the movement analysis. It is a fundamental assumption in the FC analysis but rules out sideward movements employed in the movement analysis. The second part of the paper first introduces Hisatsugu Kitahara’s analysis of “proper binding” effects in terms of MY. Then, it shows that this analysis, together with the newly proposed definition of phase and the PIC, correctly predicts a surprising difference between English and Japanese with respect to the “proper binding” phenomenon. This constitutes further evidence for MY and hence for the FC analysis of control.
Whether-exclamatives: a verum strategy
Authors: Amido Sara , Buchczyk Sebastian 
Published: February 2024

Abstract
Verum has been attested in declaratives, interrogatives, and imperatives. In this paper, we show that whether-exclamatives, a subtype of exclamatives, also qualify as a verum strategy, thus showing that the phenomenon ranges across all sentence moods. Motivation stems from the discourse properties of our data and the pragmatic contrast between whether-exclamatives and plain assertions. Furthermore, we argue that whether-exclamatives are illocutionarily defined as a coordination of assertion and excl, the illocutionary force of exclamatives. Assembling the formal tools for exclamatives, verum, and speech act coordination, we provide an analysis of verum in this complex hybrid speech act.
Effect of lanthanum (La) substitution on the magnetic and electrical properties of nickel ferrites: an investigation of its doping concentrations
Authors: Deenan Venugopal Anandhi , Selvaraj Selvanandan , Sahadevan Jhelai , Kim Ikhyun , Ramalingam Parameshwari , Paramasivam Sivaprakash 
Published: February 2024

Abstract
The structural, morphological, magnetic, and dielectric properties of lanthanum substituted nickel ferrite (NiLa
x
Fe2−x
O4) nanoparticles have been reported in this article. The amount of lanthanum substitution in NiLa
x
Fe2−x
O4 sample was varied from x = 0.025 to 0.125. The nanocrystalline Ni–La ferrites were synthesized using a solution combustion reaction (SCR) method. The orthorhombic crystal system of space group Pnma (62) is shown as the single-phase in all samples through structural investigation utilizing an X-ray diffraction (XRD) pattern. The observed trend indicates a positive correlation between the concentration of La and the corresponding rise in the predicted crystallite size values, which range from 60.5 nm to 65.2 nm. The nanoscale of the surface morphology has been confirmed by the utilisation of field emission scanning electron microscopy (FESEM). Energy dispersive X-ray (EDAX) mapping provides the compositional evidence for the prepared Ni–La ferrites. In addition, X-ray photoelectron spectroscopy (XPS) determines the ionic state of the individual atoms present in these samples. It reveals that there are no changes in the ionic state of the parent component atoms by substituting La. EDAX and XPS evidence the purity of prepared NiLa
x
Fe2−x
O4 samples without any other impurity elements. By regulating the composition of dopants, this research can substantiate the superparamagnetic characteristics of ferrites. The paramagnetic nature of lanthanum atoms involves in reducing the coercivity value. The dielectric measurement on NiLa
x
Fe2−x
O4 samples reveals that La3+ substitution effectively influence the electro-transport properties.
Intelligent System for Cognitive Study on Student Work Network Based on the Information of Public Opinion with the Background of IOT
Authors: Zhu Lin 
Published: February 2024

Abstract
Neurological, behavioral, and cognitive problems in teenage students are rising day by day. It is very important to handle these issues by gathering information from public opinion. The distribution of public opinion information in student work is unsystematic, and it is difficult to extract the needed information intelligently. An intelligent extraction algorithm of public opinion data from student work is proposed in this research and is based on human–computer interaction, machine learning, and computational techniques. In the student work, a fuzzy semantic autocorrelation mapping feature set of public opinion information is developed together with a spatial structural model of data semantic distribution features. The statistical feature quantity of semantic similarity of the public opinion data is retrieved from the student work, and the semantic ambiguity is decreased. Analyses using adaptive learning and machine understanding and human–computer interaction are used to process it. In the human–computer interaction machine understanding center, the processor adjusts the grid partition of public opinion information of the student work according to the difference of statistical features, then constructs the feature decomposition model of student behavior, and then performs context mapping. Finally, the semantic analysis is carried out to analyze the student behavior based on the cognitive study. The simulation outcomes demonstrate that the proposed method is computationally inexpensive, has low time complexity, and has real-time monitoring ability of public opinion information on student behavior.
Empirical Followership Research Since the Publication of the Formal Theory of Followership by Uhl-Bien et al. (2014) — A Systematic Review
Authors: Ribbat Mirko , Klasmeier Kai N. , Hüffmeier Joachim 
Published: February 2024

Since Uhl-Bien et al. (2014) presented their Formal Theory of Followership (FTF), followership research has been perceived as an emerging field. However, recent primary studies and reviews show that there is currently no consensus on what followership is and what it is not. To address this lack of clarity and using the lens of Uhl-Bien’s et al. (2014) seminal work, we conducted a systematic review of empirical followership research. To advance followership research, we refine and further develop the criteria for what can and what cannot be classified as a followership study in accordance with the theory. Based on these criteria, we analyze the different approaches to followership that Uhl-Bien et al. (2014) proposed, the methodological approaches, the different measures used, and the studied variables of 89 studies that we included in our systematic review. As a result, we show how empirical followership research has developed since 2014, what has been neglected, and what can be learned from the reviewed studies. Our analysis reveals that FTF provides a valuable theoretical framework to integrate a wide variety of research that contributes to a better understanding of the role of followers and following in leadership. While we find a clear trend toward more pertinent research activity, empirical followership research develops more strongly in terms of number of publications rather than in their quality.
Works of Erasmus of Rotterdam in Vilnius University Library
Authors: Jovaišaitė Emilija 
Published: February 2024

This paper analyses the works of Erasmus of Rotterdam in the collection of Vilnius University Library, printed during the 16th–18th c. Erasmus’ reception in the Grand Duchy of Lithuania remains a largely unexplored topic. Historiography only alludes to specific cases so a broader overview would contribute to a deeper understanding of the developments of the reading society of the Grand Duchy of Lithuania.
The aim of this the paper is to provide comprehensive analysis and explore the topics of the variety of titles, geography of Erasmus’ publishing, history of ownership and reading culture. As most of the copies in Lithuania belonged to clergy or religious orders, theologically and philologically themed works were the most popular. Erasmus’ satires were not as numerous but more longevous in terms of popularity. Most of the copies reached Lithuania from German and Dutch printers. Predominantly Catholic ownership in Lithuania resulted in cases of censorship, most of which were relatively mild as compared to other Catholic countries. Marginalia suggest an active and engaging reader.
The Contemporary Lithuanian Comic Culture and the History Motifs within it
Authors: Svitojus Kasparas 
Published: February 2024

The article focuses on comics published in Lithuania during the period of Lithuanian independence (1990–2022) and the historical plots used in them. The conducted research showed that the development of the comics format in Lithuania lags behind compared to other regions of the world. After researching Lithuanian comics, it became clear that most of them are historical. In Lithuania, historical comics can be divided into biographical, adventure, educational, or intended to convey a specific process, event or object. They are dominated by the 20th century events and personalities. In Lithuanian comics, history is presented through various phenomena such as clothing, architecture, recognizable historical figures, etc.
The influence of chemicals on the development and viability of Trichuris vulpis nematode eggs isolated from infested dogs
Authors: Yevstafieva V. , Dolhin O. , Melnychuk V. , Dedukhno A. , Pishchalenko M. , Krasota O. 
Published: February 2024

Preventive measures against invasive diseases should be carried out taking into account the peculiarities of the life cycle of helminths. This is especially relevant for geohelmintiases, where the infection is mainly transmitted via environmental objects contaminated with the pathogen at the exogenous stages of the parasite’s development. It has been proven that among the causative agents of nematodoses of the gastrointestinal tract of animals, the eggs of geohelminths of the genus Trichuris are the most resistant to the action of disinfectants. The aim of the research was to establish in laboratory conditions the ovicidal effect of chemicals on the development and viability of Trichuris vulpis nematode eggs isolated from infested dogs. Two disinfectants were tested in vitro, Arquades-plus (dialkyl dimethyl ammonium chloride, dodecyl dimethyl ammonium chloride, tetrasodium salt) and Brovadez-plus (alkyl dimethyl benzyl ammonium chloride, dodecyl dimethyl ammonium chloride). Arquades-plus disinfectant showed a high level of ovicidal efficiency (94.0%) only at the maximum concentration and exposure (2.0%, 60 min), and 4.7% of nematode eggs in the test culture remained viable. Brovadez-plus disinfectant was less effective and did not provide a high level of ovicidal efficiency against Trichuris eggs in the studied concentrations and exposures. Satisfactory and unsatisfactory levels of its ovicidal effect (63.1–77.1% and 2.5–58.9%) were established when using the product in concentrations of 2.0% and 0.5–1.5%, respectively, for exposures of 10–60 min. The disinfestation activity of the preparations was characterized by metric changes in experimental test cultures compared to the control test culture. Under the influence of Arquades-plus at all concentrations, the length of the eggs was greater (by 0.4–2.0%), and the width was smaller (by 0.7–4.9%). Under the influence of Brovadez-plus in concentrations of 1.0–2.0%, the length of the eggs was greater (by 0.5–0.9%), the width was smaller (by 0.3–4.1%). The results of the conducted studies allow us to recommend the Arquades-plus disinfectant in a 2.0% concentration (exposure of 60 minutes) for effective control and prevention of infection of dogs with the causative agent of trichurosis.
Entrepreneurial and social significance of larps: A case study of the Kuńkowce Fantasy Village
Authors: Sala Krzysztof 
Published: February 2024

Background: The author’s personal scientific interests and the existing research gap motivated him to pursue the topic. The article discusses the impact of larps on entrepreneurship and local communities.
Research objectives: To analyse larp as a component of social and entrepreneurial engagement, with a special focus on its origins, definitions, and development paths based on a case study of the Kuńkowce Fantasy Village.
Research design and methods: The research technique included a review of existing data, relevant literature, and a direct interview conducted in February 2023 with a purposively selected group of people involved in organising larps.
Results: The research questions were intended to evaluate the impact of larps on local entrepreneurship and social initiatives.
Conclusions: The findings permitted the author to identify the entrepreneurial and social dimensions of the Kuńkowce Fantasy Village as well as other larp projects pursued worldwide and in Poland.