bluuebunny/crossref_metadata_2025_split huggingface dataset:
MSTAN: multi-scale spatiotemporal attention network with adaptive relationship mining for remaining useful life prediction in complex systems
Authors: Huang Kai , Jia Guozhu , Jiao Zeyu , Luo Tingyu , Wang Qun , Cai Yingjie 
Published: September 2024

Abstract
In the era of smart manufacturing and advanced industrial systems, the high degree of integration and intelligence of equipment demands higher reliability and safety from systems. Existing methods often rely on historical data for Remaining Useful Life (RUL) prediction to achieve Prognostic and Health Management (PHM). However, the internal units of complex equipment exhibit significant spatial correlation and temporal diversity, making PHM for complex equipment a multidimensional challenge involving both temporal and spatial information, thereby severely limits the effectiveness of RUL prediction for complex systems. Addressing these challenges, this study introduces a multi-scale spatiotemporal attention network with adaptive relationship mining, specifically designed for the remaining useful life (RUL) prediction of such equipment. The core of the proposed method lies in the multi-scale feature perception module, which adeptly extracts varied scale features from multidimensional sensor data. Following this, an innovative adaptive relationship mining module is integrated to uncover multi-order coupling relationships between diverse sensors, enhancing the model’s predictive accuracy. Furthermore, a spatiotemporal attention module is employed to discern and emphasize crucial spatiotemporal correlations. To validate the effectiveness and superiority of the proposed method, the Commercial Modular Aero-propulsion System Simulation (C-MAPSS) dataset is employed for comprehensive performance evaluation, the IEEE 2012 PHM bearing dataset is also adopted to demonstrate the generalization and robustness of the proposed method. The results not only show a notable improvement over existing methods but also offer a more intuitive understanding through visual representations, marking a significant stride in enhancing the safety and efficiency of complex systems.
An improved multiple-outlier-robust GNSS/INS EKF filer based on multiple statistical similarity measure
Authors: Han Houzeng , Xu Tao , Li Rongheng , Ma Wenxuan , Wu He 
Published: September 2024

Abstract
High-precision and highly reliable location information is the key support for autonomous driving applications. Global Navigation satellite system (GNSS)/Inertial navigation system (INS) integrated positioning is a typical high-precision positioning technology. However, satellite signals are easily affected by various interferences such as signal blocking and multipath problems, leading to performance degradation in complex urban environments. The traditional extended Kalman filtering (EKF) cannot handle observation outlier, and the system’s positioning accuracy sharply declines when the observations are affected by non-Gaussian heavy-tailed noise. Therefore, this paper presents an improved multiple-outlier-robust extended Kalman filter (I-MOREKF) for GNSS/INS Loosely Coupled Integration. A multiple statistical similarity measure (MSSM) is built to evaluate the similarity between two random vectors from dimension to dimension. Then, the I-MOREKF is proposed by maximizing a cost function based on the MSSM, and considering the robust estimation with IGG III model. The proposed model effectively removes multiple types of errors in complex environments. A vehicular test was carried out to validate the feasibility and performance of the proposed model. Simulated random gross errors are introduced in GNSS measurements, and the measurement noises are corrupted by heavy-tail noise. The results show that simulated gross errors can be successfully detected with I-MOREKF model, and the 3D position Root Meas Square Error is 0.0148 m for I-MOREKF, which are improved by 97.2%,13.5% and 52.9%, as compared with EKF, IGG Ⅲ and MOREKF.
Simultaneous local normal forms of dynamical systems with singular underlying geometric structures
Authors: Jiang Kai , Ratiu Tudor S , Tien Zung Nguyen 
Published: September 2024

Abstract
The aim of this paper is to develop, for the first time, a general theory of simultaneous local normalisation of couples

(
X
,

G

)

, where X is a dynamical system (vector field) and

G

is an underlying geometric structure preserved by X, even if both have singularities. Such couples appear naturally in many problems, e.g. Hamiltonian dynamics, where

G

is a symplectic structure and one has the theory of Birkhoff normal forms, or constrained dynamics, where

G

is a smooth, in general singular, distribution of tangent subspaces, etc. In this paper, the geometric structure

G

is of the following types: volume form, symplectic form, contact form, Poisson tensor, as well as their singular versions. The paper addresses mainly the more difficult situations when both X and

G

are singular at a point and its results prove the existence of natural simultaneous normal forms in these cases. In general, the normalisation is only formal, but when

G

and X are (real or complex) analytic and X is analytically or Darboux integrable, then the simultaneous normalisation is also analytic. Our theory is based on a new approach, called the Toric Conservation Principle, as well as the classical step-by-step normalisation technique, and the equivariant path method.
How to quantify sleepiness during an attempt to sleep?
Authors: Putilov Arcady A , Sveshnikov Dmitry S , Yakunina Elena B , Mankaeva Olga V , Puchkova Alexandra N , Shumov Dmitry E , Gandina Eugenia O , Taranov Anton O , Ligun Natalya V , Donskaya Olga G , Verevkin Evgeniy G , Dorokhov Vladimir B 
Published: September 2024

Abstract

Background. Sleepiness assessment tools were mostly developed for detection of an elevated sleepiness level in the condition of sleep deprivation and several medical conditions. However, sleepiness occurs in various other conditions including the transition from wakefulness to sleep during an everyday attempt to get sleep. Objective. We examined whether objective sleepiness indexes can be implicated in detection of fluctuations in sleepiness level during the polysomnographically-monitored attempt to sleep, i.e. in the absence of self-reports on perceived sleepiness level throughout such an attempt. Approach. The polysomnographic signals were recorded in the afternoon throughout 106 90 min napping attempts of 53 university students (28 females). To calculate two objective sleepiness indexes, the electroencephalographic (EEG) spectra were averaged on 30 s epochs of each record, assigned to one of 5 sleep–wake stages, and scored using either the frequency weighting curve for sleepiness substate of wake state or loadings of each frequency on the 2nd principal component of variation in the EEG spectrum (either sleepiness score or PC2 score, respectively). Main results. We showed that statistically significant fluctuations in these two objective sleepiness indexes during epochs assigned to wake stage can be described in terms of the changes in verbally anchored levels of subjective sleepiness assessed by scoring on the 9-step Karolinska Sleepiness Scale. Significance. The results afford new opportunities to elaborate importance of intermediate substates between wake and sleep states for sleep–wake dynamics in healthy individuals and patients with disturbed sleep.
Higher-order topological phase with subsystem symmetries
Authors: You Yizhi 
Published: September 2024

Abstract
A wide variety of higher-order symmetry-protected topological phases (HOSPT) with gapless corners or hinges have been proposed as descendants of topological crystalline insulators protected by spatial symmetry. In this work, we address a new class of higher-order topological states that do not require crystalline symmetries but instead rely on subsystem symmetry for protection. We propose several strongly interacting models with gapless hinges or corners based on a decorated hinge-wall condensate picture. The hinge-wall, which appears as the defect configuration of a Z
2 paramagnet, is decorated with a lower-dimensional SPT state. Such a unique hinge-wall decoration structure leads to gapped surfaces separated by gapless hinges. The non-trivial nature of the hinge modes can be captured by a

1
+
1

D conformal field theory with a Wess–Zumino–Witten term. Moreover, we establish a no-go theorem to demonstrate the ungappable nature of the hinges by making a connection between the generalized Lieb–Schultz–Mattis theorem and the boundary anomaly of the HOSPT state. This universal correspondence engenders a comprehensive criterion to determine the existence of HOSPT under certain symmetries, regardless of the microscopic Hamiltonian.
Directional switching behavior of swarming systems with social and nonlinear interactions
Authors: Li Wang , Liu Shijie , Zhao Donghua , Sun Yongzheng 
Published: September 2024

Abstract
Coordinated directional switching can occur among members of many mobile biological communities. Some studies show that self-propelled particle models can describe the directional switching behavior well. The key to understanding group movement is to determine the influential factors relevant to directional switching behavior. This paper focuses on the impact of social and nonlinear interactions on the directional switching behavior observed in swarming systems. In which, the nonlinear interaction is represented as a function of a trade-off between the velocity and velocity direction of its neighbors. Based on the framework of dimension reduction theory, the high-dimensional complex model is simplified into a one-dimensional simple model, and the stationary probability density and mean switching time are obtained by theoretical analysis of the one-dimensional model. It can be seen that social and nonlinear interactions play an important role in regulating the directional switching behaviors of swarming systems. Specifically, the increase of group density and nonlinear parameter can inhibit the directional switches. For Erdös-Rényi networks, the large mean degree can suppress the directional switching behavior. For scale-free networks, increasing the degree heterogeneity can reduce the mean switching time. The results reveal the underlying mechanisms by which social and nonlinear interactions influence the directional switching behaviors of swarming systems, and provide a theoretical foundation for the design of bio-inspired devices with specific functions.
Octupole correlations in stable nucleus 153Eu within reflection-asymmetric particle rotor model*
Authors: Wang 王 Yuanyuan 媛媛 , Zhang 张 Shuangquan 双全 
Published: September 2024

Abstract
The observed low-lying

positive- and negative-parity bands in the stable nucleus 153Eu are investigated using the reflection-asymmetric triaxial particle rotor model. The experimental energy spectra, energy staggering parameters, and intraband

and

transition probabilities are well reproduced. The calculated interband

values are found to depend sensitively on the octupole deformation parameter

, although the energy spectra and intraband

and

transitions can be reproduced without the octupole degree of freedom. The observed enhanced

transition probabilities can be reproduced with

. The detailed analysis of the intrinsic wave functions shows these nearly degenerate positive- and negative-parity bands are built on two individual proton configurations, i.e., dominated by

and

, respectively, which differs from the parity doublet bands built on a single parity-mixed configuration.
Comment on ‘Stopping power in D6Li plasmas for target ignition studies’
Authors: Jiang Zihuan , Wang Zhigang , Hu Tianxing , Fu Yunqing , Yao Ke , He Bin 
Published: September 2024

Abstract
In their paper the abnormal variation of the projectile range with the plasma density was found for fusion products, and some explanations were presented for the results. However, we could not find such abnormal behavior by the calculation of stopping powers under different models. And their explanations are not appropriate. Finally the revised results corresponding to figure 3 in their paper are presented.
First high-power helicon results from DIII-D
Authors: Pinsker R.I. , Van Compernolle B. , Tang S.X. , Lestz J.B. , Moeller C.P. , Petty C.C. , Dupuy A. , Squire J.P. , Garofalo A.M. , Porkolab M. , Rost J.C. , Baek S.G. , Nagy A. , Chowdhury S. , Crocker N.A. , Degrandchamp G.H. , McLean A.G. , Gage K.R. , Marinoni A. , Martin E.H. , Ronchi G. ,   the DIII-D Team
Published: September 2024

Abstract
More than 0.6 MW of rf power at 476 MHz has been coupled to DIII-D plasmas by launching helicon (whistler) waves with a traveling-wave antenna (comb-line) in the fast-wave polarization (Van Compernolle et al 2021 Nucl. Fusion
61 116034) which resulted in the observation of electron heating of the core plasma with single-pass absorption based on ray-tracing in L-mode discharges. The coupling performance of the 1.5 m wide 30-element comb-line traveling-wave antenna has been consistent with expectations based on the 2015–2016 experiments on DIII-D with a low-power 12-element prototype (Pinsker et al 2018 Nucl. Fusion
58 106007). The conditioning process that was necessary to carry out high-power experiments is discussed; rf-specific impurities have not been observed. Parametric decay instabilities have been observed and are being investigated as a potential edge absorption mechanism (Porkolab et al 2023 AIP Conf. Proc.
2984 070004).
Migration and retention of human osteosarcoma cells in bioceramic graft with open channel architecture designed for bone tissue engineering
Authors: G Gayathry , Fernandez Francis B , Varma P R Harikrishna , Komath Manoj 
Published: September 2024

Abstract
The microstructure of a porous bioceramic bone graft, especially the pore architecture, plays a crucial role in the performance of the graft. Conventional bioceramic grafts typically feature a random, closed-pore structure, limiting biological activity to the periphery of the graft. This can lead to delay in full integration with the host site. Bioceramic forms with open through pores can perform better because their inner regions are accessible for natural bone remodeling. This study explores the influence of open through pores in a bioceramic graft on the migration and retention of the local cells in vitro, which will correlate to the rate of healing in vivo. Hydroxyapatite ceramic forms with aligned channels were fabricated using slip casting technique, employing sacrificial fibers. The sorption characteristics across the graft were evaluated using human osteosarcoma cell line. Seven-day cultures showed viable cells within the channels, confirmed by live/dead assay, scanning electron microscope analysis, and cytoskeletal staining, indicating successful cell colonization. The channel architecture effectively enhances cell migration and retention throughout its entire structure, suggesting potential applications in bone tissue engineering based on the results obtained.
Control Strategies for Mitigating Power Quality Issues in Renewable Energy coordinated Microgrid - A Comprehensive Review
Authors: Babu Ch Lenin , Manohar T Gowri 
Published: September 2024

Abstract
Renewable Energy technologies are becoming more and more common for generating electricity because they are environmentally friendly and can meet local electricity needs. They reduce network congestion and also lighten the load on conventional based power plants. Over the past few decades, grid-connected renewable energy systems have seen a rise in the significance of Power Quality issues, particularly as a result of the extensive usage of nonlinear electronics and the intermittent nature of these systems. With the emergence of power electronic converters through powerful control technology, renewable energy systems be interconnected to a large extent with the power grid or used as isolation systems in remote areas. Using additional competent control strategies can enhance not only improve the concert of these systems, but also caliber the quality of energy generated, distributed and used at the load side of Power System. Hence, this paper reviews various control strategies adopted for alleviation of power quality staples of renewable energy coordinated microgrid system and further recommendations are provided to solve power quality issues as future research.
Measuring Social Vulnerability Indicators to CoVID Pandemic: A GIS Based Analysis in North 24 Parganas, West Bengal, India
Authors: Rai A , Routh D , Bhunia G S 
Published: September 2024

Abstract
Identifying highly vulnerable communities and implementing effective strategies are crucial components in interrupting the transmission chain of any virus. This, in turn, can mitigate the economic and social repercussions of a virus outbreak. As part of this research, a CoVID-19 vulnerability map was developed for the North 24 Parganas district in West Bengal, India. The objective of this study is to explore the impact of rural-urban patterns, spatial dynamics, and morphological factors on Coronavirus infections. This investigation involves examining micro-level differentiations within the district area. Various explanatory variables, including socioeconomic, behavioral, environmental, geographic, and demographic factors, are employed to assess the factors influencing the regional spread of infectious diseases. North 24 Parganas has observed the clustering of CoVID-19 cases at the block level. Incorporating socioeconomic and environmental risk factors such as age, gender, caste, religion, language, occupation, and urbanization status into CoVID-19 case and mortality data will undoubtedly aid in elucidating the geographical origins of the pandemic.
Supporting silver on ZnCo-ZIFs as an efficient heterogeneous catalyst for oxytetracycline antibiotic removal
Authors: Thi Anh Thu Le , Huynh Vu Thanh Luong , Luu Ngoc Hanh Cao , Ngoc Tri Tan Ho , Quoc Chau Thanh Nguyen , Huynh Giao Dang 
Published: September 2024

Abstract
Water pollution by antibiotic residues negatively affects the ecosystem and seriously threatens public health. Therefore, finding a sustainable technology to remove antibiotics from water resources is extremely necessary. This work synthesized bimetallic Zn-Co based zeolite imidazolate frameworks (ZnCo-ZIFs) and integrated them with Ag via the impregnation method to obtain Ag/ZnCo-ZIFs. This material demonstrated a remarkable capability to remove oxytetracycline (OTC). The results showed that it could remove 94% OTC at an initial concentration of 30 mg.L−1 using H2O2 concentration of 0.015 mol.L−1, Ag/ZnCo-ZIFs catalyst dose of 400 mg.L−1 at room temperature for 40 min. Besides, the catalyst could be reused and recycled after four times. This promises that Ag/ZnCo-ZIFs could be approached as a heterogeneous catalytic material for removing antibiotics from aquatic environments.
Webbing 3D map from UAV images in Da Lat City, Lam Dong Province
Authors: Ngoc Huyen Trang Tran , Van Trung Le , Le Phu Vo 
Published: September 2024

Abstract
Worldwide, big cities are accelerating to fulfill the establishment of Spatial Data Infrastructure (SDI), which is a key task towards smart city. The mainstay of SDI is to create an important foundation of data capacity to provide necessary and essential information related to the requirements of urban and smart city management. With the advantages of high accuracy, low cost, and flexibility in 3D data creation, UAV (Unmanned Aerial Vehicle) images have been widely applied for the purpose of digital transformation purposes. This article aims to firstly utilize the new opportunities of using UAVs in 3D mapping and sharing 3D map data through the WebGIS platform. Secondly, processing techniques will be described after collecting the UAV images to create orthomosaics, point clouds, and Digital Surface Model (DSM). A classification of ground points was conducted to create a Digital Terrain Model (DTM) in combining with DSM to form a calibrated surface numerical model (Canopy Height Model, CHM). The images map was then digitalized coupled with the object height extracted from the CHM model and assigning attributable data to each object. The results suggested that ArcGIS Online allows users to share information widely, targeting multiple users, and to reduce the cost of GIS software investment in building thematic classes for urban infrastructure management.
Child Mental Health, Homelessness, and the Shelter System: Evidence from Medicaid in New York City
Authors: Cassidy Mike , Currie Janet , Glied Sherry , Howland Renata 
Published: September 2024

Abstract
We identified children who resided in the New York City shelter system during 2015-2020 by matching address histories in Medicaid insurance claims to publicly available homeless shelter addresses, permitting examination of health care use before, during, and after shelter stays. We found that 4.5% of NYC children aged 4-17 with consistent Medicaid coverage entered shelter over a three-to-five-year period. After shelter entry, children had increased probabilities of receiving mental health services, including therapy and diagnoses of neurodevelopmental disorders, but little change in physical health service use. Children placed in shelters co-located with mental health services were similar to children entering other shelters prior to entry but had particularly large and sustained increases in use of mental health services afterwards. Children without prior mental health claims placed in shelters co-located with mental health services were 38-48% more likely to receive mental health therapy and 14-16% more likely to receive neurodevelopmental diagnoses than similar children placed elsewhere. These children were also more likely to receive Supplemental Security Income and stayed in shelter longer. This example illustrates the potential of linking administrative data sets in order to study vulnerable populations.
Heatwaves exacerbate pollen limitation through reductions in pollen production and pollen vigour
Authors: Rosenberger Nick M , Hemberger Jeremy A , Williams Neal M 
Published: September 2024

Abstract
Increasingly frequent heat waves threaten the reproduction of flowering plants; compromising the future persistence, adaptive capacity, and dispersal of wild plant populations, and also the yield of fruit-bearing crop plants. Heat damages the development of sensitive floral organs and gametes, which inhibits pollen germination, pollen tube growth, and fertilization. However, the role of heat has not been integrated into the framework of pollen quantity and quality limitation and how heat influences the success of cross and self-pollination. We exposed developing flowers to either controlled temperature (25 °C:20 °C) or extreme heat (35 °C:20 °C) over 72 h. We then hand-pollinated them with either crossed or self-derived pollen from the same temperature treatment to determine the direct and interactive effects of simulated heatwaves on pollen tube growth and resulting seed set. We also collected anthers from virgin flowers to measure heat impacts on pollen production. Under cooler control temperatures pollen tube survival of self-derived pollen was approximately 27% lower than that of crossed pollen. Pollen tube survival in heat-treated cross-pollinated and heat-treated self-pollinated flowers were 71% and 77% lower compared to flowers cross-pollinated at control temperatures. These differences in pollen tube survival rate between heat-treated cross-pollinated and heat-treated self-pollinated flowers were insignificant. Furthermore, extreme heat reduced seed set by 87%, regardless of pollen origin, and also reduced pollen production during flower development by approximately 20%. Our results suggest flowers that develop during heatwaves are likely to experience exacerbated pollen quantity and quality limitation driven by changes in pollen production and pollen vigour. Heatwave-induced pollen limitation will likely reduce crop yields in agricultural systems, and depress mating and reproduction in wild plant species, the latter of which may hinder the adaptive capacity of plants to a rapidly changing world.