bluuebunny/crossref_metadata_2025_split huggingface dataset:
Attention‐based neural network for end‐to‐end music separation
Authors: Wang Jing , Liu Hanyue , Ying Haorong , Qiu Chuhan , Li Jingxin , Anwar Muhammad Shahid 
Published: January 2023

AbstractThe end‐to‐end separation algorithm with superior performance in the field of speech separation has not been effectively used in music separation. Moreover, since music signals are often dual channel data with a high sampling rate, how to model long‐sequence data and make rational use of the relevant information between channels is also an urgent problem to be solved. In order to solve the above problems, the performance of the end‐to‐end music separation algorithm is enhanced by improving the network structure. Our main contributions include the following: (1) A more reasonable densely connected U‐Net is designed to capture the long‐term characteristics of music, such as main melody, tone and so on. (2) On this basis, the multi‐head attention and dual‐path transformer are introduced in the separation module. Channel attention units are applied recursively on the feature map of each layer of the network, enabling the network to perform long‐sequence separation. Experimental results show that after the introduction of the channel attention, the performance of the proposed algorithm has a stable improvement compared with the baseline system. On the MUSDB18 dataset, the average score of the separated audio exceeds that of the current best‐performing music separation algorithm based on the time‐frequency domain (T‐F domain).
Backup protection with accelerating strategy based on fault control of modular multilevel converters in medium‐voltage direct current distribution network
Authors: Lv Wenxuan , Zheng Tao , Yang Yi 
Published: January 2023

AbstractThe medium‐voltage DC distribution network with multiple DC feeders is more cost‐effective when equipped with switches than DC circuit breakers. Under such conditions, the converters with fault‐handling capacity are blocked to clear the fault, which will cause the rapid disappearance of the fault current. Therefore, the primary protection has to pursue high speed at the expense of reliability, which threatens the network's safety. To construct a reliable protection system, backup protection with an accelerating strategy based on the fault control of converters is proposed. The current is controlled first by the fault control of converters to ensure the fault characteristics during backup protection. Then the DC switches on the healthy line are blocked by the polarity of the current integral, and the distribution network turns into the close‐loop mode to provide a fault current path. When the DC switches on the faulty line disconnect according to the predefined time delay, the current change time is recorded and thus the switches in the network are accelerated without communication. The proposed scheme only depends on the measured local current and the backup function still exists after acceleration. The effectiveness of the proposed scheme is verified in power systems computer aided design/electromagnetic transient including DC (PSCAD/EMTDC).
Correlation between activity indicators: Hα and Ca II lines in M-dwarf stars
Authors: Ibañez Bustos R. V. , Buccino A. P. , Flores M. , Martinez C. F. , Mauas P. J. D. 
Published: January 2023

Context. Different approaches have been adopted to study both short- and long-term stellar magnetic activity, and although the mechanisms by which low-mass stars generate large-scale magnetic fields are not well understood, it is known that stellar rotation plays a key role.
Aims. There are stars that show a cyclical behaviour in their activity studied on the blue side of the visible spectrum, which can be explained by solar dynamo or αΩ dynamo models. However, when studying late-type dwarf stars, they become redder and it is necessary to implement other indicators to analyse their magnetic activity. In the present work, we perform a comparative study between the best-known activity indicators so far defined from the Ca II and Hα lines to analyse M-dwarf stars.
Methods. We studied a sample of 29 M stars with different chromospheric activity levels and spectral classes ranging from dM0 to dM6. To do so, we employed 1796 spectra from different instruments with a median time span of observations of 21 yr. The spectra have a wide spectral range that allowed us to compute the chrosmospheric activity indicators based on Ca II and Hα. In addition, we complemented our data with photometric observations from the TESS space mission for better stellar characterisation and short-term analysis.
Results. We obtained a good and significant correlation (ρ = 0.91) between the indexes defined from the two lines for the whole set of stars in the sample. However, we found that there is a deviation for faster rotators (with Prot < 4 days) and higher flare activity (at least one flare per day). For the individual analysis, we found that the indexes computed individually for each star correlate independently of the level of chromospheric emission and the rotation period.
Conclusions. There is an overall positive correlation between Ca II and Hα emission in dM stars, except during flare events. In particular, we found that low-energy high-frequency flares could be responsible for the deviation in the linear trend in fast-rotator M dwarfs. This implies that the rotation period could be a fundamental parameter to study the stellar activity and that the rotation could drive the magnetic dynamo in low-mass active stars.
Comprehensibility improvements in integrated pronunciation instruction
Authors: Darcy Isabelle , Rocca Brian 
Published: January 2023

Abstract
Integration of pronunciation into content courses is appealing because of its potential in helping learners apply
their developing pronunciation skills in spontaneous speech. However, the effectiveness of pronunciation instruction (PI) when it
is integrated still needs to be demonstrated. This study evaluates whether a group receiving integrated PI (targeting
suprasegmentals) improved in controlled and spontaneous speech tasks, compared to a group who did not receive any specific PI. We
measured improvements as comprehensibility ratings and proportion of perceived word stress and vowel reduction errors. The results
show that integration appears to be beneficial overall, including in spontaneous speech tasks when comprehensibility is measured.
We interpret these findings considering the different tasks used and examine the contribution of the specific instructional
approach (form-focused with communicative contextualization) to the observed changes between pre- and post-test.
Final report on the key comparison CCAUV.A-K6
Authors: Rodrigues Dominique , Olsen Erling Sandermann , Llamas Osvaldo , Dobrowolska Danuta , Soares Zemar M Defilippo , Cho Wan-Ho , Hof Christian , Thomas Chris , Dickinson Laurence , Yamada Keisuke , Takahashi Hironobu , Nel Riaan , Hanes Peter , Sadıkoğlu Enver , Kolesov Sergey , Golovin Dmitrii 
Published: January 2023

Main text
The key comparison CCAUV.A-K6 has been carried out under the auspices of the Consultative Committee on Acoustics, Ultrasound and Vibration (CCAUV) of the International Committee of Weights and Measures (CIPM). This comparison is concerned with primary pressure calibration of laboratory standard microphones type LS2P. The participating NMI's are HBK-DPLA (Denmark), CENAM (Mexico), GUM (Poland), INMETRO (Brazil), KRISS (Korea), LNE (France), METAS (Switzerland), NMIA (Australia), NMIJ (Japan), NMISA (South Africa), NRC (Canada), UME (Turkey) and VNIIFTRI (Russia). The role of Pilot laboratory was undertaken by LNE (France). The measurements took place between March 2019 and December 2020. Two LS2P microphones were circulated. This report includes the measurement results from the participants, information about their calibration methods, and the analysis leading to the assignment of the Key Comparison Reference Values (KCRV) and Degrees of Equivalence (DoE).
To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database https://www.bipm.org/kcdb/.
The final report has been peer-reviewed and approved for publication by the CCAUV, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).
Performance investigation of a charge plasma tunnel FET with SiGe source pocket as a photosensor
Authors: Panda Shwetapadma , Dash Sidhartha 
Published: January 2023

Abstract
This study investigates a highly sensitive and low-power photosensor using a pocket-based charge plasma tunnel field-effect transistor (PCPTFET) structure for visible light detection. Here, zinc oxide, the transparent optical region over the channel, is the catalyst for the photo-sensing operation. When light strikes the sensitive portion of the device, creating optical charge carriers in the illumination region and substantially increases the device’s conductance. The analysis of various parametric and structural variations like intensity power density (Pj
), optical wavelength (λ), drain to source voltage (V
DS), incident angle (θ), and silicon body thickness (t
si) have been investigated for the reported pocket-based charge plasma TFET (PCPTFET) photosensor. Further, the PCPTFET’s superior performance as a highly sensitive photosensor is revealed by comparing the several optical figures of merit (FOM) with conventional tunnel field-effect transistor. The reported photosensor provides much-improved responsivity (R) of 1.52 A W−1 and quantum efficiency (η) of 4.96.
External magnetic field-assisted polarization-dependent optical bistability and multistability in a degenerate two-level EIT medium
Authors: Nguyen Tuan Anh , Nguyen Thi Thu Hien , Thai Doan Thanh , Le Van Doai , Dinh Xuan Khoa , Nguyen Huy Bang , Luong Thi Yen Nga , Hoang Minh Dong 
Published: January 2023

Abstract
In this paper, a novel degenerate two-level model is proposed to study the behavior of optical bistability (OB) and optical multistability (OM) under the effect of the magnetic field and relative phase. We show that the behavior of the OB can appear in the resonant regime by changing the strength of the external magnetic field. Especially, the result has shown that it is possible to easily convert between OB and OM by adjusting the strength of the external magnetic field or coupling field in the presence of the relative phase. In addition, the influence of the probe detuning and the atomic cooperation parameter on the OB behavior have also been considered. The studied results may be helpful for optical communication applications in optical switching processing and optimization.
Research on bus converter for SAR satellite composited bus system
Authors: Lu Zhiqi , Fang Ziwen , Dong Baolei , He Xiaobin , Huang Jun 
Published: January 2023

Abstract
The composite bus system is a new type of satellite power system, which is suitable for high-power SAR satellites. The bus converter in the compound bus system is very important. This paper analyzes the design requirements of the bus converter, selects PSM LLC as the topology of the bus converter, and verifies the rationality of the scheme through simulation.
Application and Research of the White Light Interferometer
Authors: Xue Liang , Hu Chang’an , Lv Fei 
Published: January 2023

Abstract
Surface topography measurement is the micro topography measurement of samples to be tested, which plays an important role in measuring white light interferometer. Taking the B3-shaped penetration test block for nondestructive testing and the profilometer standard ball for length measurement as the main research objects. The depth and width of crack defects in the penetration test block are measured and analyzed, the radius of the spherical groove on the reverse side of the penetration test block is measured and analyzed, and the spherical radius of the profilometer standard ball is measured and analyzed. The measurement results show that there is little difference between the radius measurement of the penetration test block and the theoretical value. The measurement of crack width and depth will contribute to the qualitative analysis of the crack, and the measurement of the profilometer standard ball provides a non-contact measurement means.
A novel method of emittance matching to increase beam transmission for cyclotron-based proton therapy facilities: simulation study
Authors: Maradia Vivek , Meer David , Weber Damian C , Lomax Antony J , Schippers Jacobus M , Psoroulas Serena 
Published: January 2023

Abstract
In proton therapy, high dose rates can reduce treatment delivery times, allowing for efficient mitigation of tumor motion and increased patient throughput. With cyclotrons however, high dose rates are difficult to achieve for low-energies as, typically, the emittance after the degrader is matched in both transversal planes using circular collimators, which does not provide an optimal matching to the acceptance of the following beamline. Transmission can however be substantially improved by transporting maximum acceptable emittances in both orthogonal planes, but at the cost of gantry angle-dependent beam shapes at isocenter. Here we demonstrate that equal emittances in both planes can be recovered at the gantry entrance using a thin scattering foil, thus ensuring gantry angle-independent beam shapes at the isocenter. We demonstrate in simulation that low-energy beam transmission can be increased by a factor of 3 using this approach compared to the currently used beam optics, whilst gantry angle-independent beam shapes are preserved. We expect that this universal approach could also bring a similar transmission improvement in other cyclotron-based proton therapy facilities.
Development of a large array of Silicon Drift Detectors for high-rate synchrotron fluorescence spectroscopy
Authors: Chen W. , Giacomini G. , Kuczewski A. , Mead J. , Rumaiz A.K. , Siddons D.P. 
Published: January 2023

Abstract
An array of small-area Silicon Drift Detectors (SDD), named Hera, has been developed at
Brookhaven National Laboratory (BNL) in the past few years. Its primary application is high-rate
spectroscopy at synchrotrons. Each SDD pixel is a 1 mm × 1 mm square to match the footprint of the
original diode-based pixel detector called Maia, which was developed for the same application. The
replacement of the diode with an SDD allows for better energy resolution at short shaping times
and an increased stability of the detector. 32, 96, and 384-channel arrays were designed and
fabricated and achieved a Full Width Half Maximum (FWHM) as low as 176 eV at 5.9 keV with peaking
time of 1 μs at -13°C. The sensor design, simulation, fabrication, its readout system, and its
spectroscopic performance are reported.
Future sea level rise dominates changes in worst case extreme sea levels along the global coastline by 2100
Authors: Jevrejeva Svetlana , Williams Joanne , Vousdoukas Michalis I , Jackson Luke P 
Published: January 2023

Abstract
We provide the magnitude of a worst case scenario for extreme sea levels (ESLs) along the global coastline by 2100. This worst case scenario for ESLs is calculated as a combination of sea surface height associated with storm surge and wave (100 year return period, the 95th percentile), high tide (the 95th percentile) and a low probability sea level rise scenario (the 95th percentile). Under these conditions, end-of-21st century ESLs have a 5% chance of exceeding 4.2 m (global coastal average), compared to 2.6 m during the baseline period (1980–2014). By 2100 almost 45% of the global coastline would experience ESLs above the global mean of 4.2 m, with up to 9–10 m for the East China Sea, Japan and North European coastal areas. Up to 86% of coastal locations would face ESLs above 3 m (100 year return period) by 2100, compared to 33% currently. Up to 90% of increases in magnitude of ESLs are driven by future sea level rise, compare to 10% associated with changes in storm surges and waves. By 2030–2040 the present-day 100 year return period for ESLs would be experienced at least once a year in tropical areas. This 100-fold increase in frequency will take place on all global coastlines by 2100.
A framework for nonrelativistic isotropic models based on generalized uncertainty principles
Authors: Herkenhoff Gomes André 
Published: January 2023

Abstract
The existence of a fundamental length scale in nature is a common prediction of distinct quantum gravity models. Discovery of such would profoundly change current knowledge of quantum phenomena and modifications to the Heisenberg uncertainty principle may be expected. Despite the attention given to this possibility in the past decades, there has been no common framework for a systematic investigation of so-called generalized uncertainty principles (GUP). In this work we provide such a framework in the context of nonrelativistic quantum mechanics. Our approach is based on very few assumptions: there is a fundamental length scale, space isotropy, invariance under parity and time reversal transformations, and symmetricity of the position and momentum operators. We show that simple dimensional analysis allows building a common framework for isotropic models based on GUP (we call those iGUP models). We discuss some popular GUP models in this context after elaborating on relevant theoretical aspects of the framework. At last, we translate current bounds on three often investigated GUP models into bounds on parameters of such common iGUP framework.
A Preliminary Result of Land subsidence Monitoring by Using Low-Cost GNSS in Bandung Basin
Authors: Shihran Reza S. , Gumilar Irwan , Sidiq Teguh P. , Bramanto Brian 
Published: January 2023

Abstract
Land Subsidence is one of the issues faced by major cities in Indonesia. The need for a land subsidence monitoring station that operates continuously is one of the most important aspects today. The current use of low-cost GNSS (Global Navigation Satellite System) is expected to help in dealing with this problem. This study aims to evaluate Low-Cost GNSS for monitoring land subsidence in Bandung Basin. The Measurement of Low-Cost GNSS using Chip-GNSS U-Blox (single frequency) and the microstrip antenna was assembled itself. The monitoring of land subsidence was carried out at one point(TK01) with an observation period from March 2021 to December 2021. The result of data processing shows the value of the coordinate standard deviation of the TK01 point during the measurement period ranges from ± 1.5 cm. The results of vertical component processing show the standard deviation in the vertical direction is ± 3.5 cm. The rate of land subsidence resulting from linear regression at the point of TK01 from March 2021 to December 2021 in this study was -13.9 cm/year with a standard deviation value of ±0.32 cm/year.
Asset Monitoring of Water Meters Using Integration of GIS and Low-Cost GNSS
Authors: Susanto L O F , Raharjo A B , Haq F 
Published: January 2023

Abstract
The high growth rate of the City of Surabaya increases the use of clean water services. The Regional Drinking Water Company (PDAM) of Surya Sembada, as the main provider of clean water in the city of Surabaya and its surroundings needs to carry out optimal asset management to maintain the expected level of service. In this study, an analysis of the condition of PDAM Surabaya’s assets will be carried out on a WebGIS platform that is connected to a database for optimal and sustainable PDAM water meter asset management. Location, water consumption history, and condition data of water meter assets from January to April 2022 are recorded using an Android-based GIS application that is connected to low-cost GNSS. The data recorded in the android application is integrated with WebGIS in real time for accurate positioning and cost-effective asset monitoring. Analysis of asset conditions will be carried out in the form of risk analysis to determine the risk of an asset in each service zone. The resulting data shows that zone 102, 104 and 105 was categorized as a very high risk zone for meter failure. This means, that there are a higher probability of a meter failure incident within that subzones
LiDAR DTM Application for Flood Inundation Modeling and Visualization (Case Study: Batu City, East Java)
Authors: Kholiq Ghozy Shalahuddin , Hidayat Husnul 
Published: January 2023

Abstract
LiDAR DTM has been widely used for simulating flood inundation from river overflows. This flood inundation simulation needs to be done as an alternative step in the flood control system and flood disaster mitigation to determine the estimated area affected by the flood. Flood simulation is a form of unsteady flow that is simulated with the HEC-RAS program that allows the user to perform one-dimensional steady flow, one and two-dimensional unsteady flow calculations, sediment transport/mobile bed computations, and water temperature/water quality modeling, and visualizes flooded areas and flood-affected areas using a geographic information system approach. Hydrological data is obtained from daily rainfall processing at the time of station rain. Hydrograph analysis was performed using the SCS CN model on the HEC-HMS software to estimate the flow rate and peak discharge. Watershed area, curve number, Impervious value, Initial Abstraction, and time lag are parameters that affect hydrograph analysis. From the results of the hydrograph analysis, the peak discharge of the model is 119.992 m2/s. Meanwhile, hydraulic analysis using HEC-RAS resulted in an inundation of 364 m2 which inundated three villages, namely Bulukerto, Bumiaji and Sidomulyo villages. The depth of the inundated area ranged from 0-15 m with an average depth of 4.534 m. The Sidomulyo area affected by the flood inundation scenario is 4,924 meters with an area of 0,02 ha. Bumiaji village was flooded with an area of 0,007 ha with a scenario of inundation depth of 4,049 m. Bulukerto village which was affected by the flood has an area of 20,972,832 m2 with a scenario of inundation depth reaching 4,343 m. Then some land cover such as residential land that is inundated by this flood simulation is 0,002 ha. Buildings from residential areas that were flooded reached 209 buildings. Then the area of agricultural land affected is 0,02 ha. In addition, there are also green open spaces affected by this simulation with an inundation area of 0,003 ha.
Analysis of The Effect of Large Population on Nitrogen Dioxide and Carbon Monoxide Levels in Java Island Using Sentinel-5P
Authors: Nugroho Rheza Tri 
Published: January 2023

Abstract
Java Island has the largest population and population density in Indonesia. One of the impacts that arise due to high population density is the high rate of pollution. This study focused on how to study air pollutants that occur in Java due to the high population density. Pollutants to be studied are nitrogen dioxide (NO2) and carbon monoxide (CO), which were taken based on observations from the Sentinel-5P. The results obtained in the population aspect indicate that the population density correlation coefficient value is higher than other aspects of the population, with R values respectively 0.526 for CO and 0.762 for NO2. NDBI (Normalized Difference Built-Up Index) and the number of vehicles were also added. It was found that NDBI at a district scale has a strong effect on increasing levels of NO2, but not with CO. Then, an analysis using the number of vehicles was also carried out. However, the results for both types of pollutants show no significant effect. An interesting fact obtained is that NO2 always has a higher correlation than CO when it meets all the variables that have been researched.