bluuebunny/crossref_metadata_2025_split huggingface dataset:
A factor pricing model based on double moving average strategy
Authors: Chen YuZhi , Fang Yi , Li XinYue , Wei Jian 
Published: November 2023

AbstractThe heterogeneous market hypothesis states that there are different types of investors with different investment term-structures in the stock market. Based on the hypothesis, we analyze the trading strategies of moving averages with different term structures, and we find that the trading strategies formed by the 1-month short-term moving average with 3-, 6-, 9-, 12-, 18-, and 24-month long-term moving averages can gain significant excess returns in the Chinese market. Accordingly, this paper adopts the moving average factor formed by the method of Liu’s to expand the current four-factor pricing model of the Chinese market. The results of spanning regression show that the introduction of the short-term average with a period of 1-month and the long-term moving average with a period of 3- and 12-month can significantly improve the pricing power. The GRS test developed by Gibbons et al. (1989) also shows that the augmented six-factor model with moving average factors can pass the test at the significance level of 5%, and the average absolute value of intercept terms decreases by about 50% compared with the results of the four-factor model. At the same time, under different macro-state dependence, the overall performance of the augmented six-factor model with moving averages is still better than that of the four-factor pricing model proposed by Liu et al.’s. Our main contribution is to introduce double moving average factors to capture the behaviors of investors’ different term structures and add these factors to the most competitive asset pricing model for enhancing the pricing power. It is of great significance to supplement the pricing model in the Chinese market.
Design and simulation of an S-band compact multi-beam klystron
Authors: Lin Xiaobo , Zhang Rui , Zuo Li , Chao Quangui , Xie Bingchuan , Wang Zhicheng , Geng Zhihui , Liao Yunfeng , Yang Xiudong 
Published: November 2023

The miniaturization and high power of klystron are the main concerns of accelerators. Multi-beam klystron (MBK) can accommodate higher power and a lower operating voltage than single-beam klystrons, significantly reducing volume and weight. This paper introduces the design and simulation of the beam-wave interaction system and multi-beam electron gun for S-band compact MBK. The 3-D particle simulation results show that the output power of the MBK is 12.6 MW, driven by an input signal with a frequency of 2856 MHz and a power of 13 W. The corresponding efficiency is 70%. In addition, the gain of the MBK is 59.9 dB. The design goal of S-band miniaturized high-power MBK is realized.
Theoretical analysis of the longitudinal mode behavior due to mode competition in bulk semiconductor lasers
Authors: Mizukami Toshiaki 
Published: November 2023

The following typical longitudinal mode phenomena occur in bulk semiconductor lasers: single-mode or multimode operation for longitudinal modes, longitudinal mode suppression except for a dominant mode, asymmetry of the spectral profile of longitudinal modes, mode hopping, and dominant mode hysteresis. This article presents the theoretical occurrences of these phenomena in a unified manner by solving mode-competition equations, including nonlinear gain based on the density matrix method. We select various types of bulk semiconductor lasers for theoretical analyses, including an 850 nm GaAs material, 1.3 and 1.55 µm InGaAsP materials, and wide-striped and narrow-striped structures of an active region. These unified analyses reveal the main factors of these phenomena and the physical parameters that influence these phenomena. A good understanding of these physical parameters will help in designing bulk semiconductor lasers with the desired characteristics.
Design and characterization of an optical-fiber-coupled laser-induced desorption source for gas-phase dynamics experiments
Authors: Milešević Dennis , Popat Divya , Gellersen Paul , Liu Zhihao , Stimson Joseph , Robertson Patrick , Green Andrew , Vallance Claire 
Published: November 2023

Preparation of neutral non-volatile molecules intact in the gas phase for mass spectrometry or chemical dynamics experiments remains a challenge for many classes of molecules. Here, we report the design and characterization of a fiber-coupled laser-based thermal desorption source capable of preparing intact neutral molecules at high molecular densities in the gas phase for use in velocity-map imaging experiments. Within this source, the sample is deposited onto a thin tantalum foil. Irradiation of the foil from the reverse side by a focused laser beam leads to highly localized heating of the sample, resulting in desorption of a plume of molecules into the gas phase. The fiber-coupled design simplifies the alignment of the desorption laser beam, and the ability to rotate the foil relative to the fixed laser beam allows the sample to be continually refreshed under vacuum. We use 118 nm photoionization of three test molecules—uracil, adenine, and phenylalanine—to characterize the source and to demonstrate various aspects of its performance. These include the dependence of the velocity-map imaging performance on the size of the interaction region and the dependence of the laser-induced desorption source emission on desorption laser power and heating time. Signal levels recorded in these measurements are comparable to those we typically obtain in similar experiments using a pulsed supersonic molecular beam, and we, therefore, believe that the source has considerable potential for use in a wide range of chemical dynamics and other experiments.
Metaphors from perception and culture
Authors: Yu Ning 
Published: November 2023

Abstract
Applying conceptual metaphor theory, this study aims to discuss how metaphors emerge from the interaction between
perceptual experience and cultural environment, comparing English and Chinese. The kind of metaphors under study is rooted in the
object image schema, particularly in its dimension in solidity with bipolar values as hard and
soft. Specifically, these are primary metaphors grounded in experiential correlations in manipulating physical
objects that are hard or soft. It is argued that the similarities and differences between English and Chinese in such metaphorical
mappings can be accounted for by four main meaning focuses consisting in four pairs of parametric variables: more or less effort,
more or less impact, more or less strength, and more or less flexibility. These parametric variables determine metaphorical
mapping pathways from hard and soft as source concepts to some abstract target concepts.
El efecto Dunning-Kruger en la autoevaluación del español como L2
Authors: Santamaría Busto Enrique 
Published: November 2023

ResumenEl presente experimento analiza las divergencias entre la autoevaluación que un grupo de 40 hablantes de español como L2 emite sobre su grado de comprensibilidad, acento extranjero y fluidez, y las evaluaciones que recibe por parte de dos grupos de jueces: 109 No expertos sin experiencia en la enseñanza y 42 Expertos o profesores de español como L2. El propósito del experimento es analizar las diferencias entre estas evaluaciones considerando los grados de desempeño de los hablantes, ya que diversos estudios han demostrado que los participantes con peor competencia tienden a sobrevalorar su habilidad, mientras que aquellos situados en lo alto de la escala tienden a subestimarla (Kruger & Dunning, 1999). Este efecto, conocido como «Dunning-Kruger», resulta relevante para conocer hasta qué punto la autoevaluación de estas tres dimensiones por parte de aprendientes de español se corresponde con la evaluación de los interlocutores nativos con los que ellos interactúan habitualmente dentro y fuera del aula. Los resultados muestran que, efectivamente, los hablantes con peor desempeño se sobrevaloran y los que fueron mejor valorados se infravaloran, aunque la experiencia de los jueces resulta relevante a la hora de marcar la significatividad estadística de las diferencias y los tamaños del efecto.
Effect of laser energy on temporal evolution of self-absorption at different air pressures
Authors: Ke W , Yuan H , Liu J Q , Wang X H , Yang A J , Chu J F , Liu D X , Rong M Z 
Published: November 2023

Abstract
The self-absorption effect is one of the key factors influencing the accuracy of quantitative analysis. Laser energy is the key influencing factor of laser-induced breakdown spectroscopy (LIBS), and the mechanism of its influence on temporal evolution of self-absorption under different air pressures is still not fully understood due to complex physical processes. In this study, the temporally resolved spectra of Cu I 521.82 nm were acquired from the direction of laser incidence and the influence of laser energy on the temporal evolution of self-absorption in a low-vacuum (at pressures of 105, 104 and 103Pa) and high-vacuum (at pressures of 10, 10−1 and 10−3Pa) environment was studied. The experimental results indicate that the self-absorption effect of spectral line Cu I 521.82 nm is enhanced with an increase in delay time and laser energy in both high-vacuum and low-vacuum environments in this study. This is because increasing the delay time and laser energy leads to an increase in plasma column density. An intriguing phenomenon observed in this experiment is that at a pressure of 105Pa, the self-absorption of Cu I 521.82 nm initially increases but eventually weakens with laser energy, while at air pressures of 104Pa and 103Pa the self-absorption monotonically weakens with increasing laser energy during the measurement. This is because temporal evolution of plasma at 104Pa and 103Pa is significantly faster than that at 105Pa, and an increase in laser energy can delay the enhancement of self-absorption, the self-absorption has rapidly evolved to decrease with laser energy during spectral measurement at air pressure of 104 Pa and 103 Pa. This work is helpful in understanding the influence of air pressure and laser energy on the self-absorption effect of spectral lines and optimizing experimental parameters, and provides a reference for LIBS application.
Probe thermometry with continuous measurements
Authors: Boeyens Julia , Annby-Andersson Björn , Bakhshinezhad Pharnam , Haack Géraldine , Perarnau-Llobet Martí , Nimmrichter Stefan , Potts Patrick P , Mehboudi Mohammad 
Published: November 2023

Abstract
Temperature estimation plays a vital role across natural sciences. A standard approach is provided by probe thermometry, where a probe is brought into contact with the sample and examined after a certain amount of time has passed. In situations where, for example, preparation of the probe is non-trivial or total measurement time of the experiment is the main resource that must be optimized, continuously monitoring the probe may be preferred. Here, we consider a minimal model, where the probe is provided by a two-level system coupled to a thermal reservoir. Monitoring thermally activated transitions enables real-time estimation of temperature with increasing accuracy over time. Within this framework we comprehensively investigate thermometry in both bosonic and fermionic environments employing a Bayesian approach. Furthermore, we explore adaptive strategies and find a significant improvement on the precision. Additionally, we examine the impact of noise and find that adaptive strategies may suffer more than non-adaptive ones for short observation times. While our main focus is on thermometry, our results are easily extended to the estimation of other environmental parameters, such as chemical potentials and transition rates.
Ultrashort Ne+ ion pulses for use in pump–probe experiments: numerical simulations
Authors: Kucharczyk P , Golombek A , Schleberger M , Wucher A , Breuer L 
Published: November 2023

Abstract
A time resolved experiment to investigate the ultrafast dynamics following an ion impact onto a solid surface requires an ultrashort ion pump pulse in combination with a properly synchronized and time resolved probe. In order to realize such an experiment, we have investigated a strategy to use femtosecond laser photoionization of atoms entrained in a pulsed supersonic jet for the production of sufficiently short ion pulses. While the generation of Arq+ ions was targeted in previous work, it has in the meantime been demonstrated that argon is not suitable due to extensive cluster formation in the supersonic expansion. Here, we therefore present numerical simulations investigating the use of neon as a precursor gas and show the feasibility of pulses containing up to ∼1000 Ne+ ions at keV energies and picosecond duration. In the process, we demonstrate that space charge broadening can be significantly reduced by detuning the flight time focusing conditions of an ion bunching system. Moreover, the results show that a controlled variation of the buncher geometry and potentials permits the generation of picosecond pulses at variable ion energy between 1 and 5 keV.
Robustness of entanglement-based discrete- and continuous-variable quantum key distribution against channel noise
Authors: Lasota Mikołaj , Kovalenko Olena , Usenko Vladyslav C 
Published: November 2023

Abstract
Discrete-variable (DV) and continuous-variable (CV) schemes constitute the two major families of quantum key distribution (QKD) protocols. Unfortunately, since the setup elements required by these schemes are quite different, making a fair comparison of their potential performance in particular applications is often troublesome, limiting the experimenters’ capability to choose an optimal solution. In this work we perform a general comparison of the major entanglement-based DV and CV QKD protocols in terms of their resistance to the channel noise, with the otherwise perfect setup, showing the definite superiority of the DV family. We analytically derive fundamental bounds on the tolerable channel noise and attenuation for entanglement-based CV QKD protocols. We also investigate the influence of DV QKD setup imperfections on the obtained results in order to determine benchmarks for the parameters of realistic photon sources and detectors, allowing the realistic DV protocols to outperform even the ideal CV QKD analogs. Our results indicate the realistic advantage of DV entanglement-based schemes over their CV counterparts and suggests the practical efforts for maximizing this advantage.
A stationary axisymmetric vacuum solution for pure 2 gravity
Authors: Azreg-Aïnou Mustapha , Ky Nguyen Hoang 
Published: November 2023

Abstract
The closed-form expression for pure



2

vacuum solution obtained in Phys. Rev. D
107, 104 008 (2023) lends itself to a generalization to axisymmetric setup via the modified Newman–Janis algorithm. We adopt the procedure put forth in Phys. Rev. D
90, 064 041 (2014) bypassing the complexification of the radial coordinate. The procedure presumes the existence of Boyer-Lindquist coordinates. Using the Event Horizon Telescope Collaboration results, we model the central black hole M87* by the thus obtained exact rotating metric, depending on the mass, rotation parameter and a third dimensionless parameter. The latter is constrained upon investigating the shadow angular size assuming mass and rotation parameters are those of M87*. Stability is investigated.
Halo-independent bounds on Inelastic Dark Matter
Authors: Kang Sunghyun , Kar Arpan , Scopel Stefano 
Published: November 2023

Abstract
We discuss halo-independent constraints on the Inelastic Dark Matter (IDM) scenario, in which a Weakly Interaction Massive Particle (WIMP) state χ with mass m
χ interacts with nuclear targets by upscattering to a heavier state χ′ with mass m
χ + δ.
In order to do so we adopt the single-stream method, that exploits the complementarity of Direct Detection (DD) and Capture in the Sun to extend the experimental sensitivity to the full range of incoming WIMP speeds.
We show that a non-vanishing mass splitting δ modifies such range, and that for particular combinations of m
χ and δ the complementarity between the two detection techniques required by the method is lost. In such cases a specific choice of the WIMP speed distribution in our Galaxy is required to obtain a constraint on the WIMP-nucleus cross section or coupling. Specifically, assuming for the escape velocity in our Galaxy u
esc the reference value u
esc
ref = 560 km/s a halo-independent bound is possible when δ ≲ 510 keV for a Spin-Independent interaction and when δ ≲ 245 keV for a Spin-Dependent interaction (with the Spin-Independent value slightly reduced to δ ≲ 490 keV when u
esc > u
esc
ref). In the low WIMP mass regime the bound from capture in the Sun is always more constraining than that for DD and is sufficient alone to provide a halo-independent constraint, while for large WIMP masses the halo-independent bound is given by a combination of capture in the Sun and DD. In this latter case the reduction in sensitivity due to the mass splitting δ is more pronounced for DD than for capture, and capture plays a more important role to determine the halo-independent bound compared to the elastic case. In particular we find that, for u
esc = u
esc
ref, unless the mass of the target used in DD is larger than about four times that of the target driving capture in the Sun, DD does not play any role in the determination of the maximal value of δ for which a halo-independent bound is possible. We also discuss the issue of thermalization of IDM within the Sun and show that its impact on our results is mild.
Investigation of 58Ni (n, p)58Co reaction cross-section with covariance analysis*
Authors: Hingu Akash , Mukherjee S. , Parashari Siddharth , Sangeeta Arora , Gandhi A. , Upadhyay Mahima , Choudhary Mahesh , Bamal Sumit , Singh Namrata , Mishra G. , De Sukanya , Sood Saurav , Prasad Sajin , Saxena G. , Kumar Ajay , Thomas R.G. , Agrawal B.K. , Katovsky K. , Kumar A. 
Published: November 2023

Abstract
The excitation function of the

reaction was measured using the well-established neutron activation technique and γ-ray spectroscopy. Neutrons in the energy range of 1.7 to 2.7

were generated using the

reaction. The neutron flux was measured using the standard

monitor reaction. The results of the neutron spectrum averaged cross-section of

reactions were compared with existing cross-section data available in the EXFOR data library as well as with various evaluated data libraries such as ENDF/B-VIII.0, JEFF-3.3, JENDL-4.0, and CENDL-3.2. Theoretical calculations were performed using the nuclear reaction code TALYS. Various nuclear level density (NLD) models were tested, and their results were compared with the present findings. Realistic NLDs were also obtained through the spectral distribution method (SDM). The cross-section results, along with the absolute errors, were obtained by investigating the uncertainty propagation and using the covariance technique. Corrections for γ-ray true coincidence summing, low-energy background neutrons, and γ-ray self attenuation were performed. The experimental cross-section obtained in the present study is consistent with previously published experimental data, evaluated libraries, and theoretical calculations carried out using the TALYS code.
Variability and selection of tomato Sletr1-2 mutants backcross population to improve yield and fruit quality
Authors: Saadah I R , Wiguna G , Anas  , Mubarok S , Hamdani K K , Soedomo R P 
Published: November 2023

Abstract
Enhancing fruit quality and yield is the goal of creating superior tomato varieties. One area of concern for breeders is fruit shelf life. To produce better offspring, hybridization attempts to combine the traits of two parents, but the results can be unpredictable. Backcrossing can create stable offspring with desired traits and eliminate undesirable characteristics from the parent plants. This study aimed to assess the diversity among advanced backcross strains and to obtain backcross genotypes carrying mutant alleles that have a high level of similarity with the superior parental lines. The study was carried out from April to September 2019 at the Indonesian Vegetable Research Institute’s screen house. In this experiment, two populations of backcrossing comprised of commercial parents of ‘Intan’ and ‘Mutiara’ varieties as well as backcross genotypes including MBC3F1 32, MBC3F1 32.2, MBC3F1 32.3, MBC3F1 37.2, MBC3F1 45.3, MBC3F1 37.1, IBC3F1 34.2, IBC3F1 37.2, and IBC3F1 34 were utilized. A variance analysis was used to determine genotype diversity. The genetic similarity between parents and offspring was determined using cluster analysis, and a t-test was used to compare mean performance values. According to the results, the BC3F1 populations of ‘Intan’, and ‘Mutiara’ exhibited a high degree of phenotypic variability. Cluster analysis and a t-test revealed that the IBC3F1.37.2 and IBC3F1.45.3 genotypes resembled ‘Intan’, furthermore MBC3F1.34 and MBC3F1.34.2 had strikingly similar characteristics to ‘Mutiara’. Therefore, several individual plants carrying the Sletr1-2 mutant allele in these four genotypes can further assemble longer tomato fruit shelf life and high-yielding varieties.
Effectivity of liquid organic fertilizer on production of pakcoy (Brassica rapa L.)
Authors: Rahmi H , Fardany H R , Bayfurqon F M , Jaman J H 
Published: November 2023

Abstract
The main objective of this research was to obtain the optimal concentration of Liquid Organic Fertilizer (LOF) from house waste against the growth and yield of pakcoy. This study used an experimental method with a single-factor randomized design group, with eight treatments. The treatments are: A0 (control), A1 (LOF 100 ml/L), A2 (LOF 200 ml/L), A3 (LOF 300 ml/L), A4 (LOF 400 ml/L), A5 (LOF 500 ml/L), A6 (LOF NASA 6 ml/L), A7 (NPK fertilizer 250 kg/ha). The treatments were repeated four times and tested by analysis of variance (ANOVA) and further tested with Duncan’s Multiple Range Test (DMRT) at 5% level. The results showed that the application of LOF from house waste significantly affected improving the growth and yield of pakcoy plants. The LOF concentration of 200 ml/L gave the highest contibution to the leaf area: 285 cm2 and fresh weight: 82 gram.
The potential of new hybrid Chrysanthemum as germplasm resource
Authors: Kurniati R , Suryawati  , Utami D W , Pramayufdy M , Purwati R D , Mulyono J , Susilowati M , Supenti  , Syafarina R 
Published: November 2023

Abstract
Many new hybrids of chrysanthemums from Indonesia are adapted to tropical areas. The hybrids were growing well with many characteristics such as consumer preferences and the idiotype of chrysanthemums. The goal of the research was to collect, select and categorize new chrysanthemum hybrids to be the parent’s resource for new breeding. They were Puspita Nusantara, Jayani, Cayapati, Sabiya, Swarna Kencana, Trissa, and Tadasita varieties. There were 2 categories, standard and spray types. Each of the varieties had specific novelty characteristics that could be gen resources as parents in chrysanthemum breeding. The specific and novelty characteristics as gen resources were the vase life period, flower shape, colour, number of petals, and the total number of flowers per plant. The standard type dominated white and yellow colour, and the spray type had more colour, shape, and size variations. Chrysanthemum cultivar (cv.) Swarna Kencana showed the highest plant height in a low area 187.6 meters MASL (meters above sea level). It followed cutting flower standards. Puspita Nusantara variety complied as crossing parents for resistance to Puccinia horianna.