bluuebunny/crossref_metadata_2025_split huggingface dataset:
Simulation of ﬂux-pumped Josephson parametric ampliﬁer with a detailed SQUID model using harmonic balance method
Authors: He Kaiyong , Dai genting , Yu Qing , He Yongcheng , Zhao Changhao , Liu Jianshe , Chen Wei 
Published: January 2023

Abstract
This work presents an analysis of ﬂux-pumped Josephson Parametric Ampliﬁer (JPA) with a detailed Superconducting QUantum Interference Device (SQUID) model, using Harmonic Balance (HB) method in Keysight Advanced Design System (ADS). The model is built with the generalized Resistively Shunted Junction (RSJ) model of a Josephson junction and the quantization condition of a SQUID, incorporating eﬀects of the geometric inductance and parasitic parameters. This model is used to simulate the behavior of an unmatched lumped element JPA and an impedance-matched JPA, showing the necessity of the detailed SQUID model for the simulation of a broadband JPA by comparison with the results based on a widely used simpliﬁed model. Gain proﬁles obtained from the approach are consistent with the existing experiments in literatures within reasonable accuracy. Owing to the HB method, the simulation is of high eﬃciency, making it feasible to sweep and optimize parameters. This provides a fast and accurate method for the design and analysis of a JPA.
On the role of initial coherence in the spin phase-space entropy production rate
Authors: Zicari Giorgio , Çakmak Barış , Müstecaplıoğlu Özgür E , Paternostro Mauro 
Published: January 2023

Abstract
Recent studies have pointed out the intrinsic dependence of figures of merit of thermodynamic relevance—such as work, heat and entropy production—on the amount of quantum coherences that is made available to a system. However, whether coherences hinder or enhance the value taken by such quantifiers of thermodynamic performance is yet to be ascertained. We show that, when considering entropy production generated in a process taking a finite-size bipartite quantum system out of equilibrium through local non-unitary channels, no general monotonicity relationship exists between the entropy production and degree of quantum coherence in the state of the system. A direct correspondence between such quantities can be retrieved when considering specific forms of open-system dynamics applied to suitably chosen initial states. Our results call for a systematic study of the role of genuine quantum features in the non-equilibrium thermodynamics of quantum processes.
Elastic temporal waveguiding
Authors: Santini Jonatha , Riva Emanuele 
Published: January 2023

Abstract
We provide a theoretical framework to mold time-modulated mechanical metamaterials with frequency conversion and wave-steering capabilities. To illustrate the concept, we initially focus on 1D lattices, whereby a sufficiently slow time-modulation of the stiffness is employed to convert the frequency content of impinging waves. Based on the adiabatic theorem, we demonstrate that undesired reflections, which emerge in time-discontinuous materials, can be dramatically reduced by a careful choice of the modulation velocity. The concept is later explored in the context of 2D lattices, whereby a slow time modulation of the stiffness not only induces frequency conversion with minimal back-scattering, but also serves as a mechanism to steer waves. Our paper explores a new and exciting way to control wave propagation in elastodynamics with scattering-free guiding capabilities, and may open new avenues for the manipulation and transport of information through elastic waves.
Is there democracy in leptonic sector of 3-3-1 model
Authors: Çiftçi R , Çiftçi A K 
Published: January 2023

Abstract
Even though the standard model (SM) of particle physics aligns with many experimental results, the need to expand the SM arises to address important open questions. The most suitable and minimal extension of the SM is the local gauge group

S
U
(
3

)
C

⊗
S
U
(
3

)
L

⊗
U
(
1

)
X

, which is known as the ‘3-3-1 model’ in the literature. In this paper, a democratic mass matrix (DMM) approach is applied to the lepton sector of one of the anomaly free 3-3-1 model. It is demonstrated that the DMM parametrization can fit with experimental mass and

3
×
3

Pontecorvo–Maki–Nakagawa–Sakata matrix (PMNS) data. Also we have presented an extended PMNS matrix elements for the gauge bosons of

K

±

(and K
0,

K
ˉ

0

) which mediate between new heavy neutrinos and leptons (known neutrinos).
The synergistic effect of Ti and Nb in TiNbC leads to enhanced anode performance for Na-ion batteries - first-principles calculations
Authors: Li Xinyuan , Pang Yudong , Wang Mingyang , Zhang Xilin , Lu Zhansheng , Yang Zongxian 
Published: January 2023

Abstract
Currently, MXenes have been identified as promising candidate electrode materials for Na-ion batteries because of their excellent energy storage and electrical conductivity. Among them, dual transition metal MXenes have attracted attention due to their excellent properties as anode materials for Na-ion batteries. In order to explore the reason why dual transition metal MXenes outperform single transition metal MXenes, we systemically investigated and compared the performance of TiNbC-based dual transition metal MXenes (TiNbC, TiNbCF2, and TiNbCO2) with that of Nb2C-based single transition metal MXenes (Nb2C, Nb2CF2, and Nb2CO2) as anode materials for Na-ion batteries based density functional theory calculations. The results showed that TiNbC, TiNbCO2, Nb2C, and Nb2CO2 are promising anode materials for Na-ion batteries due to the low diffusion barrier and high capacity of Na on their surfaces. Compared with the Nb2C-based single transition metal MXenes, the TiNbC-based dual transition metal MXenes have better adsorption performance, diffusion rate, and theoretical storage of Na atoms. The higher adsorption ability of TiNbC and TiNbCO2 to Na atoms was attributed to the synergistic effect of Ti and Nb which increases the interaction between the substrate and Na. This conclusion provides a new insight for the development of other high-performance MXenes-based anode materials for Na-ion batteries.
AM-GPINN algorithm and its application in a variable-coefficient resonant nonlinear Schrödinger equation
Authors: Qin Shu-Mei , Li Min , Xu Tao , Dong Shao-Qun 
Published: January 2023

Abstract
In this paper, we provide an effective deep learning model to predict the soliton solutions and their interactions of nonlinear partial differential equations (PDEs). Based on gradient information, we investigate the gradient-enhanced physics-informed neural networks (GPINN) method to improve the accuracy and training efficiency of PINN, which embeds the gradient of the residual into the neural network loss function. To further improve the performance of GPINN, we combine the GPINN method with the adaptive mixing sampling (AM) and then propose the AM-GPINN algorithm, which can improve the distribution of training points adaptively. As an example, we use the AM-GPINN algorithm for solving the variable-coefficient resonant nonlinear Schrödinger equation. This is also the first time to solve the variable-coefficient resonant nonlinear Schrödinger equation via deep learning methods. Under different inhomogeneous parameter conditions, the data-driven nonautonomous soliton solutions are discussed. The experimental results demonstrate that the

L

2

relative error of AM-GPINN algorithm improves the accuracy by one order of magnitude over the original PINN algorithm.
Isotope mass dependence of pedestal transport in JET H-mode plasmas
Authors: Predebon I. , Hatch D.R. , Frassinetti L. , Horvath L. , Saarelma S. , Chapman-Oplopoiou B. , Görler T. , Maggi C.F. 
Published: January 2023

Abstract
We present a comparative transport analysis of the isotope mass dependence in the pedestal of two pairs of deuterium/hydrogen type I ELMy H-mode discharges in JET with ITER-like wall, one characterized by the same input power, the other one by the same stored energy. The investigation, carried out using the gyrokinetic code GENE, focuses on the steep profile region of the pedestal. While large wavenumber modes mainly contribute to the electron heat flux and are scarcely influenced by the main gas isotope, an effect of the ion mass in agreement with the experimental (so called anti-gyro-Bohm) scaling is revealed in the low wavenumber range. In this context, the major role played by the

E
×
B

shear in regulating the ion-temperature-gradient turbulence is analyzed in some detail. The competing level of turbulent and neoclassical transport is quantified to shed light on the experimental features of the pedestal profiles at different ion mass, with the particle transport found to be consistent with a higher pedestal top density for increasing isotope masses, and the heat transport shown to match the roughly unaltered observed temperature profiles.
Influence of the shives orientation on selected hygro-thermal properties of hemp-magnesium composite
Authors: Brzyski Przemysław , Jóźwiak Mateusz , Siwiec Jakub , Sinka Maris , Trnik Anton 
Published: January 2023

Abstract
Magnesium binder is an alternative to lime binder in the technology of hemp-based composites. The advantage of using this binder is an increase in mechanical strength compared to those based on lime. These composites are mainly used as an insulating wall material, as a filling of a wooden frame structure. During compaction of the mixture, hemp shives tend to lay with fibers perpendicular to the compaction direction. The direction of the fibers in the shives, as well as the direction of the capillary pores affect the properties of the composite. The performance characteristics of a building partition insulated with a composite will vary depending on the direction of the shives in relation to the direction of the external factor. The outer wall is exposed to heat flow and water transport, e.g. by capillary action. The article presents the results of tests of the thermal conductivity and capillary rise of a composite densified in the direction perpendicular and parallel to the heat flux and moisture flow. Composites samples with a bulk density of about 370 kg/m3 were tested. Compaction of the mixture in the direction parallel to the heat flow decreased the thermal conductivity. Due to the reduced value of the thermal conductivity of the composite compacted parallel to the heat flux, such a technique can be used in prefabrication, e.g. in the production of wall blocks. This direction of compaction - perpendicular to the wall surface, and thus to the direction of capillary rise, also reduced the amount of uptaken up water and changed the course of water rising over time.
A preliminary study of mechanical treatments’ effect on the reactivation of hydrated cement paste
Authors: Argalis Pauls P , Sinka Maris , Bajare Diana 
Published: January 2023

Abstract
More than 4.4 billion metric tons of cement were produced in 2021 [1], making it one of the most common building materials. Unfortunately, excessive cement use brings up several environmental concerns, one being the enormous volumes of CO2e (carbon dioxide equivalent) created as a by-product. CO2e is a standard unit for measuring carbon footprint and can be calculated for all greenhouse gases using global warming potential. Reducing CO2 and other greenhouse gas emissions is crucial in modern cement manufacturing, as 0.9 kg of CO2e is produced for every kg of cement. Cement manufacturing contributed by releasing 3.96 Gt of CO2e into the atmosphere in 2021. This issue is often remedied using recycled materials in the fresh concrete mix as supplementary or pozzolanic additives. Some researchers have focused on regaining the activity of hydrated cement paste by grinding and thermally activating it [2–5], but a low-strength binder would also work for many applications. A low-strength binder recovered with as little energy as possible (only grinding, no heat treatment) could be considered a more sustainable and less energy-intensive way of recovery of the cement binder matrix. This study investigated a technique for recycling hydrated cement paste by mechanical treatment to disintegrate the hydrated cement conglomerate to reveal the unhydrated cement particles [6] that can be used as a recovered cementitious binder from processing waste from the production of wood-cement boards. Processing waste is defined as cement particles containing hydrated and unhydrated cement [7] and spruce wood fibres. The partly hydrated cement in the waste stream was mechanically processed in a planetary mill to reactivate it and restore its cementitious characteristics. The binder was characterized by density and mechanical compressive strength.
Prototype of an experimental stand for investigating heat and moisture transfer phenomena in building materials
Authors: Wasik M , Dereszewski A , Łapka P 
Published: January 2023

Abstract
The prototype of an experimental stand for studying drying building materials is presented in the paper. The stand is designed to validate a numerical model of heat and moisture transfer in porous media. The experiment was conducted in forced convection conditions. A building material sample was located in a holder so that only one surface (the top one) had contact with flowing air in the duct. The sample exchanged heat and moisture with the flowing air through this surface. Two fans at the end of the duct induced the airflow through the vent. The stand was placed in a climatic chamber, stabilizing the temperature (22.5°C) and relative humidity (50%) during the experiment. A tensometric beam was used to measure the temporal variation of the sample mass. A resistance thermometer (PT100) was used to measure the temperature on the sample surface. Four samples (90×90×30mm each) from cellular concrete were prepared. Each sample was dried before the experiment, immersed in water for 24h, then wrapped in the foil and preconditioned (24h) in a climate chamber to equalize the temperature. The samples were dried on the stand for 48 hours. The procedure was repeated twice. The repeatability of results has been achieved. However, the accuracy of the experimental stand was insufficient. Hence further modifications need to be made were proposed.
Impact of Polypropylene, Steel, and PVA Fibre Reinforcement on Geopolymer Composite Creep and Shrinkage Deformations
Authors: Gailitis Rihards , Sprince Andina , Kozlovksis Tomass , Pakrastins Leonids , Volkova Viktorija 
Published: January 2023

Abstract
For the last 40 years, there has been increased interest in geopolymer composite development and its mechanical properties. In the last decades, there have been cases when geopolymer composites have been used for civil engineering purposes, such as buildings and infrastructure projects. The main benefit of geopolymer binder usage is that it has a smaller impact on the environment than the Portland cement binder. Emissions caused by geopolymer manufacturing are at least two times less than emissions caused by Portland cement manufacturing. As geopolymer polymerization requires elevated temperature, it also has a significant moisture evaporation effect that further increases shrinkage. It can lead to increased cracking and reduced service life of the structures. Due to this concern, for long-term strain reduction, such as plastic and drying shrinkage and creep, fibre reinforcement is added to constrain the development of stresses in the material. This research aims to determine how different fibre reinforcements would impact geopolymer composites creep and shrinkage strains. Specimens for long-term property testing purposes were prepared with 1% of steel fibres, 1% polypropylene fibres (PP), 0.5% steel and 0.5% polyvinyl alcohol fibres, 5% PP fibres, and without fibres (plain geopolymer). The lowest creep strains are 5% PP fibre specimens, followed by 1% PP fibre, plain, 0.5% steel fibre and 0.5% PVA fibre, and 1% steel fibre specimens. The lowest specific creep is to 5% PP fibre reinforced specimens closely followed by 1% PP fibre followed by 0.5% steel and 0.5% PVA fibre, plain and 1% steel fibre reinforced composites. Specimens with 0.5% steel and 0.5 PVA fibre showed the highest compressive strength, followed by 1% PP fibre specimens, plain specimens, 1% steel fibre, and 5% PP fibre reinforced specimens. Only specimens with 1% PP fibre and 0.5% steel, and a 0.5% PVA fibre inclusion showed improved mechanical properties. Geopolymer concrete mix with 1% PP fibre inclusion and 0.5% steel and 0.5% PVA fibre inclusion have a 4.7% and 11.3% higher compressive strength. All the other fibre inclusion into mixes showed significant decreases in mechanical properties.
The effects of 3D printing on frost resistance of concrete
Authors: Spurina Ella , Sinka Maris , Ziemelis Krists , Bajare Diana 
Published: January 2023

Abstract
3DCP is becoming more common in the construction industry nowadays, however, the aspects of durability of printed concrete are not well-studied yet. This paper focuses on determining how frost-thaw cycles affect printed concrete samples, compared to cast samples of the same concrete mix and whether the conventional concrete frost resistance tests can be applied for 3D printed concrete samples. Two different concrete mixes were both printed and cast – first one was a ready-made mix provided by a dry concrete mix manufacturer and was used for reference, whereas the other mix was prepared at the lab. First, 7 and 28-day compressive and flexural strength as well as density were determined to establish the difference between mechanical and material properties of both printed and cast concrete samples that were intended to be used for frost resistance testing according to standard CEN 12390-9. Next, both printed and cast samples of both mixes were subject to a total of 56 freeze-thaw cycles while submerged in NaCl solution, allowing to determine mass loss of each sample after N frost cycles. To conclude, the obtained results enable the authors to evaluate how 3D printing affects concrete resistance to frost/thaw cycles compared to conventionally cast concrete as well as the possible causes for this. Further research is needed to improve both the design mix of concrete as well as the printing and testing methodology of frost resistance of 3D printed concrete which would possibly lead to its increased use in exposed outdoor structures in northern regions.
Strategic scenarios of post-war recovery of sustainable development of Poltava region of Ukraine: innovative and environmental aspects
Authors: Kharazishvili Y , Bugayko D , Yashchyshyna I , Butorina V , Androshchuk I , Sribnyi O 
Published: January 2023

Abstract
The state and strategic scenarios of restoration of sustainable development of Poltava region of Ukraine in the post-war period are studied. To develop a strategic plan for the recovery of the Poltava region, a modern methodology of strategizing (scientific and strategic foresight) is used according to the principle “the future is determined by the trajectory into the future” and three strategic scenarios have been developed until 2027: realistic, optimistic and the scenario of entering the optimal zone of the EU countries, which correspond to the average annual growth rates of real GRP -4.94, -0.72 and 4.1%. The contribution of innovative factors to the economic growth of the region was determined using the modified Cobb-Douglas function and the Solow residual method, which prove the averaged contributions to economic growth: scientific and technological progress STP -3.7; labor 3.1; capital 0.38; production manufacturability 1.57; innovations 0.31%. The strategic dynamics of indicators of innovation and environmental safety on the trajectory of sustainable development are scientifically substantiated and the main threats are identified. The proposed methodology of adaptive response to threats of the environmental subsystem gives possibilities to preserve its stability and balanced sustainable development.
Factor-criteria assessment of greening prerequisites for transport infrastructure development in Ukraine
Authors: Hutsaliuk O , Bondar Iu , Kotsiurba O , Ostapenko O , Skoptsov K , Boiko O 
Published: January 2023

Abstract
The article examines the elements of factor-criterion assessment greening of the prerequisites for the genesis of the transport sector of Ukraine; in particular, the results of the evaluation of the evolution of the national transport industry. The methods of regulatory influence on the stages of the genesis of the national transport sector were studied, and the main problems of the evolution of the transport sector were systematized. It was determined that environmental protection of the transport sector is an important component of country’s environmental security as a whole. The contribution of the «All-European program on transport, environment and health protection», which is implemented by the joint efforts of the UNECE and WHO, as well as the current regulatory and legal acts of Ukraine, which reflect modern trends in the integration of environmental policy into transport, are analyzed. In this model, there are international components of the sphere of service implementation, guidelines for defining goals and promising directions of greening, which will ensure the strengthening of the ecological component of the transit potential of Ukraine.
The Analysis of Regional Economic Development (RED) through Community Based Tourism (CBT) at Ngilngof Tourism Village, Maluku, Indonesia
Authors: Tupamahu Maria Katje , Sandanafu Sally Paulina , Korlefura Criezta 
Published: January 2023

Abstract
Ngilngof village is one of the main tourist villages in Manyew Districts of Maluku Province, Indonesia. This is demonstrated by winning the championship award category of the advanced tourism villages in the 2019 National competition. The Development of Village Tourism (DVT) and Community Tourism (CBT) related empowerment needs publicity, with politics an important tool for the development of village management and the development of social and economic benefits and Regional Economic Development (RED). This study aimed to identify a general description of Ngilngof as a tourist village, and study the concept of economic development as a relationship between development and the social welfare and participation of the Ngilngof community. The research method used is a qualitative approach with case study design and interactive model analysis. Research data is measured utilising local economic, social and physical environmental perspectives. The key informants were selected using purposive sampling techniques, including the elements of the Ngilngof village apparatus, community leaders and tourism practitioners. The results showed the criteria for economic development of Ngilngof Tourism Village including attractions, amenities, accessibility and ancillary services have minor impact on the social and economic welfare of Ngilngof Community, however the analysis of RED factors does show a positive impact on rural economic development.