bluuebunny/crossref_metadata_2025_split huggingface dataset:
Improve the integrity testing process based on QFD, FMEA and TRIZ
Authors: Vysotskaya M V , Ya Dmitriev A 
Published: January 2021

Abstract
In today’s aircraft industry – competitiveness in the domestic and foreign markets, is the main criterion for the development of quality, a high level of which is achieved through methods and approaches: QFD, FMEA, TRIZ. There is a possibility of application of these methods at tests of production, for the purpose to meet expectations of consumers with the most optimum combination of characteristics of production. The design process is often associated with a compromise of conflicting parameters, which means increased costs and loss of quality. Innovation in the production process can create great value. The rapid development of modern technologies and the commercial environment suggests that the design of production processes requires the application of a systematic method of improvement. The proposed method combines a number of quality tools to support the process of modern development of aviation. In order to implement the acceptance improvement, it is necessary, first, to analyze the product testing process in accordance with the influencing parameters and use QFD (quality function deployment) to obtain the basic requirements for the testing process. Secondly, to find the contradictions of the testing process and analyze them comprehensively. To creatively solve the revealed contradictions, apply the Russian theory of inventive problem solving (TRIZ). When using this technique increases both the efficiency and maneuverability of the use of quality tools to solve technological problems. The effectiveness of the proposed method of improvement is illustrated and confirmed by the example of the process of testing the tightness of the hose of the life support system of the product “Bion – M”.
Hydrodynamic force and wave run-up due to diffraction of ocean water waves by a surface-piercing bottom-mounted compound partial-porous cylinder
Authors: Sarkar Abhijit , Bora Swaroop Nandan 
Published: January 2021

Abstract
Here we consider the case of a train of linear water waves incident on a bottom-mounted surface-piercing compound partial-porous cylinder consisting of two coaxial cylinders of which the upper cylinder is hollow with a thin porous side wall and the lower cylinder, with radius greater than that of the upper one, is rigid. Subsequently, we examine the associated hydrodynamic forces. Using linear water wave theory and eigenfunction expansion, the problem is developed in terms of suitable velocity potentials. The important boundary condition on the porous boundary is defined with the aid of Darcy’s law. The matching conditions across the linear interface between successive fluid domains arising due the continuity of pressure and velocity are suitably used. Thereafter, a system of linear equations arises in terms of the unknowns solving which the hydrodynamic force and wave run-up for the compound partial-porous cylinder are calculated. Various numerical experiments show the effect of different parameters, such as porosity of the upper cylinder, draft ratio, the ratio of radii of the upper and lower cylinders and the depth of water on hydrodynamic force and wave run-up. It is observed that the wave force takes higher values corresponding to lower values of radius ratio, draft and porous coefficients. Further, for fixed values of radii, porosity and depth, the wave run-up is observed to be more when the wavenumber takes increasing values. The obtained results establish that different parameters may be suitably chosen in order to design useful ocean structures which may be installed as wave-absorbers for various activities in ocean including capturing of wave energy. Further, such structures can also act as the base of windmills installed in oceans to extract wind energy. The efficiency of the model developed is validated by comparing it with an available established result from which an excellent agreement is observed.
Modelling of light scattering by gold nanoparticles at optical fibre interfaces
Authors: Wang Xiang , Benedictus Rinze , Groves Roger M 
Published: January 2021

Abstract
Optical fibre backscatter reflectometry is an important technique for Structural Health Monitoring (SHM). In recent years, increasing the intensity of backscattered light in backscatter reflectometry has shown the advantage of improving the signal detection in shape sensing and temperature detection due to the increase of signal to noise ratio and this approach could potentially be used to improve the performance of an SHM system. Doping nanoparticles (NPs) is a method to increase the intensity of backscattered light in distributed fibre optic sensing. The increased intensity of light backscattered by the NPs needs to be investigated to design suitable optical sensing fibres with NPs for backscatter reflectometry. In this work NPs were added to refractive index matching liquid and tested with commercial NP suspensions experimentally between the tips of two optical fibres. An estimate of the intensity of backscattered light from the NPs in this structure was performed by simulation to give a better understanding of the expected levels of intensities of scattered light from NPs in this distributed fibre optic sensing configuration. We present analytical models based on Mie theory and the Monte Carlo Method. Simulated results are presented, for a broad bandwidth Gaussian spectra shape incident light with a central wavelength around 1550 nm, to match the experimental conditions in this work. The novelty is in developing this model for scattered light by NPs at optical fibre interfaces and the evaluation of the possibility of detection by the calculated scattered intensity levels.
Structural and electronic properties of realistic two-dimensional amorphous topological insulators
Authors: Focassio Bruno , Schleder Gabriel R , Costa Marcio , Fazzio Adalberto , Lewenkopf Caio 
Published: January 2021

Abstract
We investigate the structure and electronic spectra properties of two-dimensional amorphous bismuthene structures and show that these systems are topological insulators. We employ a realistic modeling of amorphous geometries together with density functional theory for electronic structure calculations. We investigate the system topological properties throughout the amorphization process and find that the robustness of the topological phase is associated with the spin–orbit coupling strength and size of the pristine topological gap. Using recursive non-equilibrium Green’s function, we study the electronic transport properties of nanoribbons devices with lengths comparable to experimentally synthesized materials. We find a 2e
2/h conductance plateau within the topological gap and an onset of Anderson localization at the trivial insulator phase.
Concentration quenching of photoluminescence in optically transparent Lu2O3:Eu thin films deposited to be used as scintillators
Authors: Ezirmik Kadri Vefa 
Published: January 2021

Abstract
Photoluminescent thin films of europium doped lutetium oxide (Lu2O3:Eu) -an established material for x-ray scintillators- have been grown on glass substrates employing radio-frequency magnetron sputtering deposition technique. Optically transparent, crystalline films were obtained by only controlling the deposition process parameters. Neither any pre-treatment on glass substrate nor any post-deposition treatment on the films was applied. To our knowledge, depositing transparent but crystalline films of Lu2O3:Eu on glass substrates in such a direct way is an achievement that is reported for the first time in the literature. Using separate sputtering targets for the matrix constituent (Lu2O3) and the dopant enabled us to control the doping level of europium atoms in the films. By varying the magnetron power applied to the Eu2O3 target, we produced a series of Lu2O3:Eu thin films with different Eu concentrations. Significant quenching of luminescence by concentration was observed in the films. Detailed chemical and microstructural analyses revealed that europium atoms segregated from the matrix at high concentrations, an important contributor to concentration quenching. Some remarks have been given on finding the europium concentration that will give best scintillator performance.
CVN impact energy and fracture characteristics correlations with different oxide nanoparticles improving submerged arc welds
Authors: Jiménez-Jiménez A , Paniagua-Mercado A M , García-Bórquez A , De Ita-De la Torre A S , Mejía-García C , López-Hirata V M , Saucedo-Muñoz M L , Miguel-Díaz E 
Published: January 2021

Abstract
The main aim of this research is to correlate the toughness improvement with fracture features of tested Charpy V-Notch impact specimens obtained from submerged arc welds enriched by different oxide nanoparticles (TiO2, SiO2, Al2O3 and Mn2O3). Through Scanning Electron Microscopy (SEM) fractography, fracture features were determined, which are the shear fracture percent, the loading angle, as well as the diameter of dimples and the width of cleavage sheets at ductile and brittle fracture regions, respectively. It was observed an increase of the Charpy V-Notch impact energy with the decrease of loading angle and the average diameter of dimples, as well as with the increase of its shear fractures percents. Moreover, it was correlated the increase of Acicular Ferrite surface density with the decrease of width of cleavage sheets. Thus, the toughness of the submerged arc welds can be improved by adding TiO2, SiO2, Al2O3 or Mn2O3 nanoparticles.
NO gas adsorption properties of MoS2 from monolayer to trilayer: a first-principles study
Authors: Wang Zhaohua , Zhang Yanni , Ren Yanbing , Wang Miaomiao , Zhang Zhiyong , Zhao Wu , Yan Junfeng , Zhai Chunxue , Yun Jiangni 
Published: January 2021

Abstract
The NO gas adsorption properties of the monolayer, bilayer and trilayer MoS2 has been studied based on the first-principles calculation. The interaction between NO and MoS2 layers is weak physical adsorption, which is evidenced by the large distance (>3 Å), small adsorption energies (<0.9 eV) and deformation electron density. Moreover, the effect of the NO adsorption on the charge transfer and the electronic properties are also discussed. For all the NO adsorption cases, 0.04 e charge transfer exists by Mulliken/Hirshfeld analysis and and the charge density difference between NO molecular and MoS2 layers. The NO adsorption can obviously induces new impurity states at about 0.5 eV in the band gap that can lead to the change of the transport properties of the MoS2 layers and then it could detect the NO gas. We also performed semi-quantitatively theoretical analysis from the carrier concentration n and carrier mobility μ to obtain the effect of the NO adsorption on electrical conductivity. Our results provide a theoretical basis for the application of MoS2 layers as gas sensors for important NO polluting gases in air.
Large-scale fabrication of all-inkjet-printed resistors and WORM memories on flexible polymer films with high yield and stability
Authors: Ramon Eloi , Sowade Enrico , Martínez-Domingo Carme , Mitra Kalyan Yoti , Alcalde Ana , Baumann Reinhard R , Carrabina Jordi 
Published: January 2021

Abstract
We report on the development of inkjet-printed thin-film resistors using both organic and inorganic ink formulations. The passive devices were manufactured on flexible polymer substrates in ambient condition without the need for a cleanroom environment or inert atmosphere and at a maximum temperature of 150 °C. By using the same manufacturing process, the rapid electrical sintering (RES) method is demonstrated as effective for the fabrication of inkjet-printed, programmable Write-Once-Read-Many (WORM) memories. Several hundred fully inkjet-printed resistors with different parameters were fabricated and subsequently morphologically and electrically characterized with the aim of obtaining statistically significant data. From a manufacturing process viewpoint, the procedures based on inkjet printing herein described are highly attractive: they do not require high temperatures, low pressures, special atmospheric conditions, and any masks, therefore providing a versatile low-cost approach to fabricate passive electrical components and simple circuits useful for the electronic industry. Printing can be carried out at a sufficiently low temperature to avoid damage to the fabric substrate and these devices can be used in a range of applications requiring flexible and conformal devices from embedded passive filters in PCBs to wearable electronics.
A posteriori corrections to the iterative qubit coupled cluster method to minimize the use of quantum resources in large-scale calculations
Authors: Ryabinkin Ilya G , Izmaylov Artur F , Genin Scott N 
Published: January 2021

Abstract
The iterative qubit coupled cluster (iQCC) method is a systematic variational approach to solve the electronic structure problem on universal quantum computers. It is able to use arbitrarily shallow quantum circuits at expense of iterative canonical transformation of the Hamiltonian and rebuilding a circuit. Here we present a variety of a posteriori corrections to the iQCC energies to reduce the number of iterations to achieve the desired accuracy. Our energy corrections are based on a low-order perturbation theory series that can be efficiently evaluated on a classical computer. Moreover, capturing a part of the total energy perturbatively, allows us to formulate the qubit active-space concept, in which only a subset of all qubits is treated variationally. As a result, further reduction of quantum resource requirements is achieved. We demonstrate the utility and efficiency of our approach numerically on the examples of 10-qubit N2 molecule dissociation, the 24-qubit H2O symmetric stretch, and 56-qubit singlet-triplet gap calculations for the technologically important complex, tris-(2-phenylpyridine)iridium(III) Ir(ppy)3.
First principles calculations of magneto-crystalline anisotropy of rare-earth magnets
Authors: Hamada Tomoyuki , Okamoto Masakuni 
Published: January 2021

Abstract
Magneto-crystalline anisotropies, K

u
, and anisotropic magnetic fields, H

a
, of two rare-earth (RE) magnets, i.e. CeFe12, and PrFe12, are theoretically calculated by using the crystal field (CF) method based on the first principles density functional theory (DFT) and the non-collinear DFT + U (NCDFT + U) method. The CF method reproduces an experimental H

a
of PrFe12 but it failed to reproduce the H

a
of CeFe12, providing H

a
with a wrong sign. The NCDFT + U method correctly reproduces experimental H

a
of CeFe12 and PrFe12, however the optimization of effective Hubbard on-site interaction parameters, U

eff
, of the 4f electrons of the magnets is indispensable for the accurate calculation of H

a
. We have found that the CF method is valid in so far as it is used for the study of K

u
of RE magnets, which have RE atoms heavier than Pr atom. We expect that the NCDFT + U method would become a quantitative K

u
calculation method of any RE magnets if the U

eff
calculation method of 4f electrons of RE magnets is established.
Determination of the scaling characteristics of time-dependent optical properties of microalgae using electromagnetic scattering
Authors: Ma C Y 
Published: January 2021

Abstract
The time-dependent optical properties of microalgae are crucial for light transfer in photobioreactor (PBR) designs. In this study, the time-dependent optical properties were derived using electromagnetic scattering theory informed by the experimentally measured optical properties of Chlorella protothecoides. The temporal scaling functions (TSFs) of nearly wavelength-independent absorption and scattering cross-sections were demonstrated using electromagnetic scattering theory, leading to the first concrete expression of the TSF. The TSF establishes the relationship between the time-dependent absorption/scattering cross-sections in the stationary and growth phases of microalgal development. The concrete expression of the TSF provides a new means of calculating the time-dependent optical properties of microalgae using electromagnetic scattering theory. The TSF of microalgae has great potential in remote sensing and PBR applications.
Modulation of vegetation restoration on outdoor thermal comfort over the Loess Plateau, China from 1982 to 2015
Authors: Zhang Xuezhen , Zhang Zefan , Song Shuaifeng 
Published: January 2021

Abstract
This study depicts changes in the warm season (May to September) Universal Thermal Climate Index (UTCI) quantifying outdoor thermal comfort over the Loess Plateau from 1982 to 2015 and examines its relationship with large-scale climate changes and local vegetation restoration under the Grain for Green Program (GGP) after 1999. The results show that the UTCI experienced an increasing trend of 0.074/a from 1982 to 1999 and subsequently experienced a weakly decreasing trend of −0.002/a from 1999 to 2015. This trend shift in the UTCI was predominantly determined by surface air temperature changes with slopes of 0.077 °C a−1 from 1982 to 1999 and −0.005 °C a−1 from 1999 to 2015. The hiatus in the regional temperature rise after 1999 was closely related to the large-scale climate warming hiatus. Meanwhile, both measurement data analysis and climate modeling with the Weather Research and Forecasting (WRF) model suggest that the trend shift was also accelerated by vegetation restoration after 1999 through the intensification of transpiration, which increased the latent heat flux and reduced sensible heat flux. In particular, at the stations with the greatest degree of vegetation restoration, the local forcing from vegetation restoration was likely greater than that from the large-scale climate warming hiatus. This study highlights the importance of substantial vegetation restoration on local and regional thermal comfort.
Recent advances in structured illumination microscopy
Authors: Ma Ying , Wen Kai , Liu Min , Zheng Juanjuan , Chu Kaiqin , Smith Zachary J , Liu Lixin , Gao Peng 
Published: January 2021

Abstract
Structured illumination microscopy (SIM), is a wide-field, minimally-invasive super-resolution optical imaging approach with optical sectioning capability, and it has been extensively applied to many different fields. During the past decades, SIM has been drawing great attention for both the technique development and applications. In this review, firstly, the basic conception, instrumentation, and functionalities of SIM are introduced concisely. Secondly, recent advances in SIM which enhance SIM in different aspects are reviewed. Finally, the variants of SIM are summarized and the outlooks and perspectives of SIM are presented.
Alkali/alkaline-earth metal intercalated g-C3N4 induced charge redistribution and optimized photocatalysis: status and challenges
Authors: Cui Wen , Chen Peng , Chen Lvcun , Li Jieyuan , Zhou Ying , Dong Fan 
Published: January 2021

Abstract
Limited by the intrinsic graphitic sp2-hybridized array of tri-s-triazine repeating units and inert stack of layers, the insertion of intercalant between layers of graphitic carbon nitride (CN) could be an effective way to strengthen the van der Waals force between adjoining layers and induce the charge redistribution in CN for the improvement of photocatalysis. This review summarizes the latest progress related to the design and construction of alkali/alkaline-earth metal intercalated CN, including (a) single alkali/alkaline-earth metal intercalated CN, (b) alkali/alkaline-earth metal and non-metallic species co-intercalated CN, (c) alkali/alkaline-earth metal intercalated and surface modification co-functionalized CN. The promotion mechanism of each classification will be critically discussed, namely alkali/alkaline-earth metal intercalated CN-induced charge redistribution facilitates the adsorption and activation of reactants, accelerates the separation efficiency of photogenerated carriers, and optimizes the reaction pathway. Also, the influence on band structure and optical property has been discussed with the intercalation of alkali/alkaline-earth metal. Finally, this mini-review highlights crucial issues that should be addressed in future research.
Inception neural network for complete intersection Calabi–Yau 3-folds
Authors: Erbin H , Finotello R 
Published: January 2021

AbstractWe introduce a neural network inspired by Google’s Inception model to compute the Hodge numberh1,1of complete intersection Calabi–Yau (CICY) 3-folds. This architecture improves largely the accuracy of the predictions over existing results, giving already 97% of accuracy with just 30% of the data for training. Accuracy climbs to 99% when using 80% of the data for training. This proves that neural networks are a valuable resource to study geometric aspects in both pure mathematics and string theory.
Mandatory Corporate Social Responsibility? Legislative Innovation and Judicial Application in China
Authors: Lin Li-Wen 
Published: January 2021

Abstract
Corporate social responsibility (CSR) is often understood as voluntary corporate behavior beyond legal compliance. The recent emergence of CSR legislation is challenging this typical understanding. A number of countries including China, Indonesia, and India have expressly stated in legislation that companies shall undertake CSR. However, the CSR law is controversial. Critics of CSR see the law as an unwise effort to challenge profit maximization as the only social responsibility of the corporation. Even CSR advocates welcome the CSR law with great caution. Given the vague statutory language of CSR, the practical application of the law places high demands on the judiciary. However, as the countries that have adopted the CSR law are mainly developing countries with rather weak legal institutions, it raises a common concern that the law is simply an innovation without implementation. This Article conducts an empirical study of China, an early adopter of CSR legislation. The empirical analysis of Chinese court cases reveals what the CSR law means in judicial practice, whether CSR is in fact mandatory, and in what types of disputes CSR is relevant or outcome determinative. Among various findings, this Article shows that the CSR law is by no means as useless as commonly expected. The meaningful application of the law is attributable to the law’s compatibility with China’s legal infrastructure and sociopolitical institutions. Chinese courts have innovatively applied CSR in various contexts far beyond the traditionally Western-led focus on directors’ fiduciary duties. The Chinese experience suggests that the CSR law is more of a judicial review standard than a corporate behavior standard, which further confirms the importance of judicial capacity in implementing the vague law. This Article concludes with insights for the corporate purpose debate from a comparative perspective and with policy suggestions for adopting CSR legislation.