bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research on testing method of attitude angle in projectile bore of small caliber electromagnetic weapon
Authors: Li Shili , Cao Zhiyuan , Lei Qiang , Qin Peiyu 
Published: June 2023

Abstract
Aiming at the influence of the attitude angle in the bore of a small calibre electromagnetic weapon on the stability of the projectile, a method for measuring the attitude angle of a projectile in the bore of a small caliber electromagnetic weapon is presented in this paper. According to the launching environment of the electromagnetic weapon and the structural characteristics of body tube, an integrated simulating missiles of anti-high overload is developed to convert the measurement of the attitude angle in the bore of the projectile into the measurement of laser spot displacement, the motion trajectory of the laser beam on the target plate in front of the muzzle is captured by a high-speed camera, and the displacement trajectory of the laser spot is measured by using adaptive spot displacement tracking technology based on centre of mass identification, and then the attitude angle of the projectile is obtained by trigonometric function calculation. Through laboratory verification and the theoretical analysis, the test error is ≤0.1′,it can realize high precision measurement of attitude angle in projectile bore. Finally, through the live firing test, the attitude angle of the projectile in the chamber of a certain electromagnetic weapon is obtained, and the effectiveness of the method is verified.
Performance Study of a Permanent-Magnet Eddy Current Damper for Guns Recoil Control
Authors: Liu Ning , Wang Nan-nan , Shen Yan-ping , Wang Biao-biao 
Published: June 2023

Abstract
Eddy current damper (ECD) is a promising device for dissipating kinetic energy in dynamic systems, this study is conducted to analyze the dynamic characterization and structural optimization of linear ECD under guns launch load. The recoil resistance of ECD under guns launch load is highly nonlinear at high recoil velocity, and the recoil resistance curve shows an increase-decrease-increasing shape like a “saddle”, which is not conducive to the stability of ECD during operation. The effects of several structural parameters on the dynamic characterization of ECD were studied in details. Results show that the air-gap size, the thickness of the magnetic conduction tube and conductive tube all have a notable influence on the recoil resistance curve of ECD. Moreover, BP neural network and genetic algorithm were used for structural optimization and the optimal value was verified by FEM. The optimization results indicate that the “saddle” shape of optimized recoil resistance curve is basically invisible. The fullness of the recoil resistance curve is significantly improved from 84.93% to 92.1%, which guaranteeing a smooth recoil movement. Finally, an impact loading test system for eddy current damper was built and the experimental results were basically consistent with the simulation results.
Research on Vibration Reduction design of Rifling Machining Tool for Gun barrel
Authors: Xu Xiangdong , Chen Guoguang , Guan Shixi , Zhang Bin , Li Shuai , Zhao Fuchun 
Published: June 2023

Abstract
The tool damping groove can effectively reduce the vibration amplitude, suppress vibration and avoid the occurrence of resonance. The output damping of the tool system is affected by the distribution of the damping groove on the outer surface. Therefore, four different distribution modes of vibration reduction grooves on the outer surface of the tool system were designed: pit distribution, vertical distribution, spiral distribution and horizontal distribution. Firstly, the Fluent software was used to simulate the damping flow field of the damping groove on the outer surface of the tool system under five different distribution modes including no damping groove, and it was found that the output damping effect of the damping channel with horizontal distribution of damping groove was better. Secondly, Simulink software is used to simulate its dynamic model, and it is intuitively shown that the flutter effect of the 3×4×4 horizontal distribution of the damping groove is better.
Superconductors in strong electric fields: Quantum Electrodynamics meets Superconductivity
Authors: Amoretti Andrea 
Published: June 2023

Abstract
A static electric field has always been thought to play little role in the physics of ideal conductors, since the screening effects of mobile carriers prevent it from penetrating deep into the bulk of a metal. Very recently however, experimental evidence has been obtained which indicates that static electric fields can be used to manipulate the superconductive properties of metallic BCS superconducting thin films, weakening the critical current. In this paper I will show how possible explanations to this striking effect can be found relying on the analogy between Superconductivity and Quantum Electrodynamics noticed by Nambu and Iona-Lasinio in the sixties. I will show that, following this parallelism, it is possible to predict a new phenomenon: the superconducting Schwinger effect. Secondly I will explain how this new microscopic effect can be connected to a modified Gizburg-Landau theory where additional couplings between electric field and the superconductive condensate are taken into account. Eventually I will connect these theoretical predictions to the experiments, proposing them as a possible explanation of the weakening of superconductivity due to an external electric field.
Quantum field corrections of the equation of state in cosmological space-time
Authors: Becattini F. , Roselli D. 
Published: June 2023

Abstract
A proper quantum statistical field theory framework for the decoupling of the cosmological plasma in curved space-time implies the appearance of corrections to the classical kinetic form of the stress-energy tensor of freely streaming particles. Such quantum corrections can become relevant even at long times after the decoupling and can significantly modify the relation between energy density and pressure, that is the equation of state.
A numerical solver for investigating the space charge effect on the
electric field in liquid argon time projection chambers
Authors: Tu Shuang Z. , Jiang Chao , Junk Thomas R. , Yang Tingjun 
Published: June 2023

Abstract
This paper reports the development of a numerical solver aimed to simulate the interaction
between the space charge (i.e. ions) distribution and the electric field in liquid argon time
projection chamber (LArTPC) detectors. The ion transport equation is solved by a time-accurate,
cell-centered finite volume method and the electric potential equation by a continuous finite
element method. The electric potential equation updates the electric field which provides the
drift velocity to the ion transport equation. The ion transport equation updates the space charge
density distribution which appears as the source term in the electric potential equation. The
interaction between the space charge distribution and the electric field is numerically simulated
within each physical time step. The convective velocity in the ion transport equation can include
the background flow velocity in addition to the electric drift velocity. The numerical solver has
been parallelized using the Message Passing Interface (MPI) library. Numerical tests show and
verify the capability and accuracy of the current numerical solver. It is planned that the
developed numerical solver, together with a Computational Fluid Dynamics (CFD) package which
provides the flow velocity field, can be used to investigate the space charge effect on the
electric field in large-scale particle detectors.
Laser calibration of the ATLAS Tile Calorimeter during LHC Run 2
Authors: Agaras M.N. , Ahmad A. , Blanco A. , Boumediene D. , Bonnefoy R. , Calvet D. , Calvetti M. , Chadelas R. , Conde Muino P. , Cortes Gonzalez A. , Crouau M. , Crozatier C. , Daudon F. , Davidek T. , Di Gregorio G. , Fiorini L. , Galhardo B. , Gris Ph. , Klimek P. , Lafarguette P. , Lambert D. , Leone S. , Maio A. , Marjanovic M. , Martins F. , Mlynarikova M. , Pereira B. , Pedro R. , Petukhova K. , Polacek S. , Rosten R. , Santoni C. , Scuri F. , Simon D. , Smirnov Y. , Solodkov A. , Solovyanov O. , Van Woerden M. , Veloso F. , Wilkens H. 
Published: June 2023

Abstract
This article reports the laser calibration of the hadronic
Tile Calorimeter of the ATLAS experiment in the LHC Run 2 data
campaign. The upgraded Laser II calibration system is described. The
system was commissioned during the first LHC Long Shutdown,
exhibiting a stability better than 0.8% for the laser light
monitoring. The methods employed to derive the detector calibration
factors with data from the laser calibration runs are also
detailed. These allowed to correct for the response fluctuations of
the 9852 photomultiplier tubes of the Tile Calorimeter with a total
uncertainty of 0.5% plus a luminosity-dependent sub-dominant
term. Finally, we report the regular monitoring and performance
studies using laser events in both standalone runs and during proton
collisions. These studies include channel timing and quality
inspection, and photomultiplier linearity and response dependence on
anode current.
A high-resolution real-time imaging system for observing the trajectories of neutron induced particles in a scintillator
Authors: Yamamoto Seiichi , Yoshino Masao , Nakanishi Kohei , Kamada Kei , Yoshikawa Akira , Kataoka Jun 
Published: June 2023

Abstract
High-resolution imaging of neutron induced particles is required in such methods as neutron radiography. However, the scintillation spots in a neutron-sensitive scintillator have not yet been imaged nor measured for size. We developed a high-resolution, real-time neutron induced particle imaging system for observing these particles' trajectories in a scintillator. The developed system is based on a magnifying unit and a cooled electron multiplying charge-coupled device (EM-CCD) camera combined with a lithium-containing silver-doped zinc sulfide (Li-ZnS(Ag)) scintillator plate. Neutrons from a californium-252 (252Cf) source were irradiated to the Li-ZnS(Ag) scintillator and imaged with the system. Using our system, we measured the scintillation spots of the neutron induced particles having different shapes in real time. In some of these measured scintillation spots, those with elliptical shapes were observed due to the trajectories of the particles in the scintillator. The spatial resolution calculated from the widths of the scintillation spots was ∼56 μm. Consequently, the developed imaging system is promising for research on neutron imaging that requires high spatial resolution.
Differentiation of greenhouse gases in corporate science-based targets improves alignment with Paris temperature goal
Authors: Bjørn Anders , Lloyd Shannon , Schenker Urs , Margni Manuele , Levasseur Annie , Agez Maxime , Matthews H Damon 
Published: June 2023

AbstractCompanies are increasingly setting greenhouse gas (GHG) emission reduction targets to align with the 1.5 °C goal of the Paris Agreement. Currently, companies set these science-based targets (SBTs) for aggregate GHGs expressed in CO2-equivalent emissions. This approach does not specify which gases will be reduced and risk misalignment with ambitious mitigation scenarios in which individual gas emissions are mitigated at different rates. We propose that companies instead set reduction targets for separate baskets of GHGs, defined according to the atmospheric lifetimes and global mitigation potentials of GHGs. We use a sector-level analysis to approximate the average impact of this proposal on company SBTs. We apply a multiregional environmentally extended input output model and a range of 1.5 °C emissions scenarios to compare 1-, 2- and 3-basket approaches for calculating sector-level SBTs for direct (scope 1) and indirect (scope 2 and upstream scope 3) emissions for all major global sectors. The multi-basket approaches lead to higher reduction requirements for scope 1 and 2 emissions than the current single-basket approach for most sectors, because these emission sources are usually dominated by CO2, which is typically mitigated faster than other gases in 1.5 °C scenarios. Exceptions are scope 1 emissions for fossil and biological raw material production and waste management, which are dominated by other GHGs (mainly CH4and N2O). On the other hand, upstream scope 3 reduction targets at the sector level often become less ambitious with a multi-basket approach, owing mainly to substantial shares of CH4and, in some cases, non-CO2long-lived emissions. Our results indicate that a shift to a multi-basket approach would improve the alignment of SBTs with the Paris temperature goal and would require most of the current set of companies with approved SBTs to increase the ambition of their scope 1 and scope 2 targets. More research on the implications of a multi-basket approach on company-level SBTs for all scope 3 activities (downstream, as well as upstream) is needed.
Elevation dependency of future degradation of permafrost over the Qinghai-Tibet Plateau
Authors: Zhang Guofei , Mu Cuicui , Nan Zhuotong , Wu Xiaodong , Cheng Guodong 
Published: June 2023

Abstract
Global warming has caused widespread permafrost degradation, but the geographic regularity of permafrost degradation is unknown. Here, we investigated the three-dimensional features of future permafrost degradation on the Qinghai-Tibetan Plateau. Our findings show that permafrost degradation under shared socioeconomic pathways (SSPs) has obvious three-dimensional characteristics. In comparison to latitude and aridity, permafrost degradation is closely related to elevation, i.e. it slows with elevation, a phenomenon known as elevation-dependent degradation. The pattern of elevation-dependent degradation is consistent across four subzones and is strongly linked to thermal conditions that vary with elevation. Under SSP2-4.5, SSP3-7.0, and SSP5-8.5 scenarios, remarkable elevation-dependent warming (EDW) is observed at 3600–4900 m, but changes in mean annual ground temperature of permafrost and EDW as altitude rises are anti-phase. Under any SSP, the magnitude of mean annual air temperature along altitude belts determines the degree of permafrost degradation (R
2 > 0.90). This research provides new insight on the evolution of permafrost.
Yours, mine, and ours: gender, intra-household dynamics, and financing solar home systems in Tanzania
Authors: Gill-Wiehl Annelise , Ojong Nathanael 
Published: June 2023

Abstract
The financing of off-grid solar is a crucial component for the expansion of electricity access, particularly across sub-Saharan Africa. Emerging literature in energy access research analyzes the role of gender and inequalities in access and subsequent outcomes; however, beyond gendered outcomes, the field has yet to interrogate the intra-household dynamics of obtaining access. The literatures of the intra-household dynamics of budgeting and energy access have remained distinct. Bridging these literatures, we present the first analysis of if and how intra-household dynamics relate to how individuals obtain energy access through our specific case of financing solar home systems (SHSs). Drawing on 113 interviews across four districts in Tanzania, we employ qualitative thematic analysis and quantitative generalized linear model-based prevalence ratio estimates. We find five categories of how SHS adopters describe gender and intra-household dynamics relating to the financing of their SHS. We find it inappropriate to treat the household as a single entity as in half our sample, women are either solely or jointly responsible for financing the SHS. Female headed households have a higher prevalence of relying on debt to finance their SHS, while households with female financial decision-making power have a higher prevalence of relying on savings. The unitary model of a household limits the sector’s ability to efficiently support multi-adult households as they navigate individual needs and preferences in the financing and ultimate acquisition of the SHS. Researchers, policy makers, and the private sector could further acknowledge and explore intra-household dynamics and consider shifting the focus away from debt-based financing towards energy-dedicated savings accounts for female customers and improving borrowing conditions for female headed households.
Schrödinger equation driven by the square of a Gaussian field: instanton analysis in the large amplification limit
Authors: Mounaix Philippe 
Published: June 2023

Abstract
We study the tail of p(U), the probability distribution of

U
=
|
ψ
(
0
,
L
)

|
2

, for

ln
U
≫
1

,

ψ
(
x
,
z
)

being the solution to

∂
z

ψ
−

i

2
m

∇

⊥

2

ψ
=
g
|
S

|
2

ψ

, where

S
(
x
,
z
)

is a complex Gaussian random field, z and x respectively are the axial and transverse coordinates, with

0
⩽
z
⩽
L

, and both

m
≠
0

and g > 0 are real parameters. We perform the first instanton analysis of the corresponding Martin-Siggia-Rose action, from which it is found that the realizations of S concentrate onto long filamentary instantons, as

ln
U
→
+
∞

. The tail of p(U) is deduced from the statistics of the instantons. The value of g above which

⟨
U
⟩

diverges coincides with the one obtained by the completely different approach developed in Mounaix et al (2006 Commun. Math. Phys.
264 741). Numerical simulations clearly show a statistical bias of S towards the instanton for the largest sampled values of

ln
U

. The high maxima—or ‘hot spots’—of

|
S
(
x
,
z
)

|
2

for the biased realizations of S tend to cluster in the instanton region.
Can weight hysteresis in a neural network judge the continuity/discontinuity of a phase transition?
Authors: Nakamura Katsumi , Fuchizaki Kazuhiro 
Published: June 2023

Abstract
We often encounter hysteresis associated with short-term memory stored in our brain when we see continuously varying pictures in back-and-forth directions. We expect a neural network (NN) to also experience hysteresis in recognizing information back and forth depending on its continuity. This study shows that using equilibrium configurations obtained from the well-defined models undergoing the phase transitions as learning data, the weights of an NN can exhibit hysteresis behaviors against sequential learning, increasing (or decreasing) an external field or temperature. Indeed, the weights’ hysteresis clearly shows up when an NN learns back and forth a series of configurations passing through a continuous transition or a crossover, whereas no hysteresis arises for discontinuous transitions. This fascinating finding opens up a new application of machine learning to judge the order of a phase transition from the suitably visualized changes in microscopic configurations without setting a specific model.
Quality of mangosteen on registered and non-registered farmers in Payakumbuh West Sumatra to supporting exports
Authors: Sulistyaningrum A. , Qomariah Hayati N. , Mulyono D. , Prabawati S. , Laila Sayekti A. , Marlina L. , Jawal Anwarudin Syah M. , Sjafrina N. , Noviarli  , Alfia Anugrah Cahyati R. 
Published: June 2023

Abstract
The demand for mangosteen exports is wide open, but the ability to meet the quota is still low. In this regulation, the Packing House Operation (PHO) requires that the mangosteen for export must come from registered farmers. But in reality only rely on registered farmers cannot meet the quota. The purpose of this study was to analyze the quality of mangosteen from registered and non-registered farmers. This research was conducted by using the T-test by comparing the quality of the mangosteen on registered and non-registered farmers. The results showed that the registered and non-register mangosteen originating from Payakumbuh showed no significant differences in the seven parameters, namely peel color, yellow latex in the peel, yellow latex in the flesh, scars on the peel, fruit weight, total soluble solids, and acid content. Meanwhile, the parameter of vitamin C content was significantly different with a significance value of 0.045. So that the export policies of registered and non-registered farmers need to be reviewed, because it is less effective and efficient. Because of the findings in the field, mangosteen from registered and non-registered farmers entered the PHO.
Characteristics of gluten-free cookies from konjac, jack beans and dragon fruit (Hylocereus undatus)
Authors: Nurfirdausi A , Aini N , Dwiyanti H 
Published: June 2023

Abstract
The development of gluten-free cookies can be done using fiber-rich konjac flour. The addition of protein sources will reduce the GI of the ingredients so that the addition jack bean flour which is a local food is expected to increase its functional properties. To improve its appearance and functional properties, dragon fruit which is rich in anthocyanins is added as a functional component. The aim of the study was to determine the right formulation to produce gluten-free food from konjac tubers, jack bean and dragon fruit with good nutritional and sensory values and favored by panelists. The study used a factorial Completely Randomized Design with 2 factors. The first factor is the proportion of konjac flour: jack bean flour consists of 3 levels, namely 80:20, 70:30 and 60:40. The second factor was the proportion of dragon fruit consisting of 3 levels, namely 10, 20 and 30%. The variables studied at this stage are nutritional values including levels of total protein, fat, minerals, water, ash, yield, and carbohydrates as well as sensory properties including aroma, texture, taste, colour, aftertaste, flavour, and overall acceptability. The conclusion from this study is that the ratio of the use of konjac tuber flour and jack bean flour, as well as the proportion factor of the use of dragon fruit concentrate have an effect on moisture content, ash content, fat content, total protein content, carbohydrate content, and yield of the resulting cookies. In addition to the results of sensory analysis, the results showed a significant effect of the use of the ratio of flour and dragon fruit concentrate, on the attributes of color, aroma, taste, texture, flavour, aftertaste, and overall acceptance of cookies.
Agronomic performance and correlation of growth components, yield components and production on 30 F3 lines of new plant type of black rice specific to highland ecosystems
Authors: Limbongan Yusuf L , Parari Trisday Y , Limbongan Amelia A , Palese Menatopan M 
Published: June 2023

Abstract
Many high-yielding varieties of rice have been released, but generally lack good quality. This study aimed to examine the agronomic performance of several new plant types of black F3 rice lines at two medium altitude. The research was carried out on rice fields in Tallunglipu District, North Toraja Regency with an altitude of 850 m above sea level. This research took place from May 2020 to November 2022. This study used the Single Seed Descend selection method which was arranged in randomized block design pattern at each location. The genetic material tested consisted of 30 F3 lines resulting from two combinations of crosses between Toraja local black rice, each of which was crossed with a national superior variety and 3 comparison varieties, namely Pare Ambo, Pare Lallodo and Inpari 4 which were repeated 3 times. The observational data were analyzed for variance and if there was a significant effect, then the Honestly Significant Difference was 5% and the value of closeness between characters was tested for correlation and weighted analysis (WINDEX) was performed to select the strains. The results showed that the character had a close correlation with productivity, namely the character of the weight of pithy grain per clump, the maximum number of tillers and the number of pithy grain per panicle. The lines with the best productivity were F3UKIT104-2-194 (5.7 tons/ha) and F3UKIT104-2-197 (5.4 tons/ha). The selected strains based on Windex selection are UKIT104-2-197, UKIT 104-2-194, UKIT 104-2-298, UKIT 104-2-089, UKIT 104-2-127, UKIT-101-2-131, UKIT-101-2-218, UKIT 104-2-003, UKIT 104-2-148, UKIT-101-2-002, UKIT-101-2-003, UKIT-104-2-046, UKIT 104-2-064, and UKIT 104-2-001.