bluuebunny/crossref_metadata_2025_split huggingface dataset:
Hyperspectral image classification based on extrema morphological profiles and total variation
Authors: Ma Tao , Huang Weijian , Wang Chun , Ge Shuangquan , Liu Yunfei 
Published: April 2022

Abstract
Hyperspectral image (HSI) contains spectral information and spatial information of a scene. Because of the unique spectral characteristics of materials, HSI has been proved to be particularly useful for distinguishing the sort of materials in the scene. In this paper, a HSI classification method is proposed. Firstly, we propose a new extrema morphological profiles (EMPs) to extract the spatial feature in HSI. Secondly, total variation (TV) is used to integrate the spatial feature into a fused feature map. Finally, support vector machine (SVM) is utilized to accurately classify the fused feature maps. In order to evaluate the proposed method, we take quantitative classification analyses on a HSI dataset, class accuracy (CA), overall accuracy (OA), average accuracy (AA), and Kappa coefficient are adopted as the metrics. The experimental results indicate that the proposed method can efficiently achieve high classification accuracy.
Dual-domain unsupervised network for removing motion artifact related to Gadoxetic acid-enhanced MRI
Authors: Bai Chongxin , Liu Kewen , Chen Shi , Li Zhao , Xie Weida , Bao Qingjia , Liu Chaoyang 
Published: April 2022

Abstract
The transient severe motion may cause severe image degradation during gadoxetic acid-enhanced arterial phase imaging. This work proposes a new dual-domain unsupervised motion artifacts disentanglement network for motion correction related to gadoxetic acid-enhanced MRI. We assume that motion-free images and motion-corrupted images belong to the different domains, then the motion correction is converted to the image-to-image translation problem. The image-to-image translation within the same domain is designed to constrain autoencoders to learn the feature representation. And the cross-domain translation explores the cycle consistency in the absence of paired images. Experimental results demonstrate that our method can effectively reduce artifacts in the gadoxetic acid-enhanced images.
Spatial-temporal graph attention network for traffic flow forecasting
Authors: Wang Ling , Jia Gaofeng 
Published: April 2022

Abstract
Traffic flow forecasting is one of the most challenging tasks in intelligent transportation system, which is very important and critical for many traffic services. Although there are existing works on forecasting the future traffic flow, the majority of them have certain limitations on modelling spatial-temporal correlations: they usually use different modules for spatial and temporal dependencies, and lack abilities of utilizing the historical periodic data. In order to overcome these problems, a novel Spatial-Temporal Graph Attention network (STGAT) is proposed. Considering the periodic characteristic of traffic data, the raw data is transformed into a three-dimensional tensor corresponded to the weekly period and recent period before inputting into the STGAT model. The random walk theory is used to construct a localized spatial-temporal graph to model the spatial-temporal dependencies, and an elaborately designed spatial-temporal graph attention mechanism is used to synchronously capture the complex spatial-temporal dynamic correlations. By calculating the similarity of spatial-temporal features of weekly and recent period input, the model integrates the periodic features into the target. Experimental results on two public real-world datasets demonstrate that STGAT achieves superior performance and consistently outperforms other baselines.
A method of air target recognition based on combined-rules
Authors: Zhang Zhen , Fang Fengtang , Xing Yupeng , Fu Bin 
Published: April 2022

Abstract
In order to improve the authenticity, reliability and accuracy of air target identification in complex situation, a processing method based on combined-rules is proposed to further enhance the automation degree of air target identification among various air target identification methods. Rule combination and conflict resolutionare used to reduce the workload of human intervention and manual judgment and make target recognition more rapid and accurate.
Research on Speed Control Method of Mine Hoist based on Improved Adaptive Particle Swarm
Authors: Ye Zhang , Dong-sheng Zuo , Xiao-rui Ai 
Published: April 2022

Abstract
Most of the current mine hoists use PID controllers for speed adjustment, and there are problems such as long adjustment time, excessive reliance on experience, easy overshoot and oscillation. In order to solve the above-mentioned problems, it is planned to use the adaptive particle swarm optimization based on simulated annealing (SA-APSO) algorithm to optimize the parameters of the controller, and conduct simulation experiments based on Simulink simulation. The simulation results show that the optimized control algorithm can effectively improve the control efficiency, reduce the overshoot, without vibration, and can effectively improve the speed and accuracy of the mine hoist speed control.
Fault Diagnosis Method of Spacecraft Control Systems Based on PCA-ResNet
Authors: Wei Xuan , Mu Xiaodong , Jiang Tao , Liu Weiqiang , Zeng Zhaoju 
Published: April 2022

Abstract
Due to the complex space environment, spacecraft telemetry signals are accompanied by a large amount of noise, and the accuracy of fault diagnosis is low by directly using the original telemetry signals. This paper proposes a fault diagnosis method for spacecraft control systems based on principal component analysis (PCA) and residual network (ResNet). Firstly, grayscale images are generated by denoising the telemetry signal of the spacecraft control system through PCA; Secondly, the images are input into the residual network to extract deep-level features; Finally, the Softmax classifier is used for classification to realize the fault diagnosis of the spacecraft control system. The research results show that the diagnostic accuracy of the method proposed in this paper reaches 95.33%, which is higher than other diagnostic models, and the method can be used for the actual fault classification of spacecraft control systems.
Research on LQR controller of control torque gyro self-balancing vehicle based on QPSO optimization
Authors: Luo Zezhou , Xu Lin 
Published: April 2022

Abstract
The LQR control method based on quantum particle swarm optimization (QPSO) is used to solve the balance problem of the control torque gyro self-balancing vehicle. Firstly, the system dynamics model was established by Lagrange method, and the fitness function of mixed indexes was designed, and the system was simulated numerically. Finally, compared with the results of double closed-loop PID control and LQR control using empirical method, the performance of each algorithm in vehicle body balance control is analyzed. The results show that the LQR control algorithm based on PSO optimization can quickly adjust the roll Angle from the initial Angle to the balance position, and has a faster response time, smaller overshoot, and a stronger ability to resist external interference for the balance control of the torque gyro balancing vehicle.
Design of Gust Load Alleviation Control Based on UD-PSO for Civil Aircraft
Authors: Qu Xiaoyu , Li Tao 
Published: April 2022

Abstract
Civil aircraft will produce undesirable normal overload under the disturbance of vertical turbulence or gusts, which will lead to deterioration of the ride quality of passenger. To solve this problem, a design scheme of gust load alleviation (GLA) control based on UD-PSO optimization is proposed. Firstly, design a classical gust load alleviation control strategy in the control system. The GLA controller will automatically generate the control command, which is calculated by the sensor feedback signal of turbulence or gust. That is, the aileron and spoiler are deflected in the same direction to counteract the undesired normal overload; at the same time, the elevators are deflected to ensured the longitudinal stability of the aircraft. Then, selects a suitable reference model and a reasonable objective function to achieve the desired ride quality performance index. Finally, the UD-PSO algorithm is used to automatically optimize the controller parameters. The simulation results show that the load alleviation control strategy optimized based on UD-PSO can effectively reduce the gust interference, improve the ride comfort, and achieve a good control performance, which shows the effectiveness of the proposed method.
Radiation hardness and timing performance in MALTA monolithic pixel sensors in TowerJazz 180 nm
Authors: van Rijnbach M. , Allport P. , Asensi I. , Berdalovic I. , Bortoletto D. , Buttar C. , Cardella R. , Dachs F. , Dao V. , Denizli H. , Dobrijevic D. , Dyndal M. , Flores L. , Freeman P. , Gabrielli A. , Gonella L. , LeBlanc M. , Oyulmaz K. , Pernegger H. , Piro F. , Riedler P. , Sandaker H. , Solans C. , Snoeys W. , Suligoj T. , Torres J. , Worm S. 
Published: April 2022

Abstract
The MALTA family of depleted monolithic pixel sensors produced in TowerJazz 180 nm CMOS technology target radiation hard applications for the HL-LHC and beyond. Several process modifications and front-end improvements have resulted in radiation hardness >1015 1 MeV neq/cm2 and time resolution below 2 ns, with uniform charge collection and efficiency across the pixel of size 36.4 × 36.4 µm2 with small collection electrode. This contribution will present the comparison of samples produced on high-resistivity epitaxial silicon with Czochralski substrates, before and after neutron irradiation, and results from MALTA2 with a new cascoded front-end flavour that further reduces the RTS noise.
Tailored alginate/PCL-gelatin-β-TCP membrane for guided bone regeneration
Authors: Joo Gyeongjin , Park Myeongki , Park Seong-su , Tripathi Garima , Lee Byong-Taek 
Published: April 2022

Abstract
Membranes prepared for guided bone regeneration (GBR) signify valued resources, inhibiting fibrosis and assisting bone regenration. However, existing membranes lack bone regenerative capacity or adequate degradation profile. An alginate-casted polycaprolactone-gelatin-β-tricalcium phosphate dual membrane was fabricated by electrospinning and casting processes to enhance new bone formation under a GBR process. Porous membranes were synthesized with suitable hydrophilicity, swelling, and degradation behavior to confirm the compatibility of the product in the body. Furthermore, osteoblast-type cell toxicity and cell adhesion results showed that the electrospun membrane offered compatible environment to cells while the alginate sheet was found capable enough to supress the cellular attachment, but was a non-toxic material. Post-implantation, the in-vivo outcomes of the dual-layered membrane, showed appreciable bone formation. Significantly, osteoid islands had fused in the membrane group by eight weeks. The infiltration of fibrous tissues was blocked by the alginate membrane, and the ingrowth of new bone was enhanced. Immunocytochemical analysis indicated that the dual membrane could direct more proteins which control mineralization and convene osteoconductive properties of tissue-engineered bone grafts.
Non-equilibrium dynamics of a dissipative two-site Hubbard model simulated on IBM quantum computers
Authors: Tornow Sabine , Gehrke Wolfgang , Helmbrecht Udo 
Published: April 2022

Abstract
Many-body physics is one very well suited field for testing quantum algorithms and for finding working heuristics on present quantum computers. We have investigated the non-equilibrium dynamics of one- and two-electron systems, which are coupled to an environment that introduces decoherence and dissipation. In our approach, the electronic system is represented in the framework of a two-site Hubbard model while the environment is modelled by a spin bath. To simulate the non-equilibrium population probabilities of the different states on a quantum computer we have encoded the electronic states and environmental degrees of freedom into qubits and ancilla qubits (bath), respectively. The total evolution time was divided into short time intervals, during which the system evolves. After each of these time steps, the system interacts with ancilla qubits representing the bath in thermal equilibrium. We have specifically studied spin baths leading to both, unital and non-unital dynamics of the electronic system and have found that electron correlations clearly enhance the electron transfer rates in the latter case. For short time periods, the simulation on the quantum computer is found to be in very good agreement with the exact results if error mitigation methods are applied. Our method to simulate also non-unitary time-evolution on a quantum computer can be well extended to simulate electronic systems in correlated spin baths as well as in bosonic and fermionic baths.
Efficient direction-independent fog harvesting using a corona discharge device with a multi-electrode structure
Authors: LI Dingchen , LI Chuan , LI Jiawei , YANG Wendi , XIAO Menghan , ZHANG Ming , YANG Yong , YU Kexun 
Published: April 2022

Abstract
Efficient collection of water from fog can effectively alleviate the problem of water shortages in foggy but water-scarce areas, such as deserts, islands and so on. Unlike inefficient fog meshes, corona discharge can charge water droplets and further enhance the water-collecting effect. This study proposes a novel multi-electrode collecting structure that can achieve efficient and direction-independent water collection from fog. The multi-electrode structure consists of three parts: a charging electrode, an intercepting electrode and a ground electrode. Four types of water-collecting structures are compared experimentally, and the collection rates from a traditional fog mesh, a wire-mesh electrode with fog coming from a high-voltage electrode, a wire-mesh electrode with fog coming from a ground electrode and a multi-electrode structure are 2–3 g h−1, 100–120 g h−1, 60–80 g h−1 and 200–220 g h−1, respectively. The collection rate of the multi-electrode structure is 100‒150 times that of a traditional fog mesh and 2–4 times that of a wire-mesh electrode. These results demonstrate the superiority of the multi-electrode structure in fog collection. In addition, the motion equation of charged droplets in an electric field is also derived, and the optimization strategy of electrode spacing is also discussed. This structure can be applied not only to fog collection, but also to air purification, factory waste gas treatment and other fields.
Subjective short-term memory difficulties at ages 50–75 predict dementia risk in a community-based cohort followed over 17 years
Authors: Möllers Tobias , Stocker Hannah , Perna Laura , Rujescu Dan , Holleczek Bernd , Schöttker Ben , Brenner Hermann 
Published: April 2022

Abstract

Introduction
Subjective cognitive decline (SCD) is an established precursor of dementia. However, the relationship between SCD and dementia has been mostly studied among people aged 65+. We aimed to assess the association between subjective memory difficulties at ages 50–75 with all-cause dementia and dementia-subtypes in a community-based cohort with long-term follow-up.

Methods
6,190 individuals (51% female) aged 50–75 years (median age, 62) attending a general health examination (by a total of 684 general practitioners) in Saarland, Germany, in 2000–2002 were recruited for a community-based cohort study. Subjective difficulties regarding short-term and long-term memory were assessed at baseline with two simple yes/no questions. Associations with dementia (−subtypes) diagnoses during 17 years of follow-up were estimated by Cox proportional hazards models.

Results
492 participants were diagnosed with dementia during 17 years of follow-up. Participants with short-term memory difficulties were at higher risk to receive incident all-cause dementia and vascular dementia diagnoses both within 0–9 years (age and sex adjusted hazard ratios (aHR), 1.80 and 2.00, respectively) and within 0–17 years (aHR 1.55 and 1.78, respectively) from recruitment (P &lt; 0.05 in all cases). For clinical Alzheimer’s disease, a significant association was only seen within the initial 6 years. There were no associations of long-term memory difficulties with any type of dementia.

Conclusions
Subjective difficulties in short-term memory predict both intermediate and long-term risk of vascular and all-cause dementia even among late middle-age adults. These results underline the importance of cardiovascular disease prevention efforts well before old age for maintaining cognitive health.
Facelift Patients Receiving Intraoperative Administration of a Self-assembling Hemostat Agent Experienced Minimal Bruising and No Acute Hematomas: A Pilot Study
Authors: Few Julius 
Published: April 2022

Abstract

Background
Hematomas are consistently cited as the most common complication of facelift surgery, with reported incidence rates ranging from 1% to 9% despite preventative measures. A self-assembling RADA16 peptide solution (PuraSinus, 3-D Matrix, Newton, MA) designed to aid in wound healing, adhesion prevention, and bleeding control has demonstrated hemostatic control of intra- and postoperative bleeding associated with various surgical procedures, including nasal and sinus surgery.

Objectives
To report surgical experience using novel application of RADA16 hemostatic agent in facelift procedures.

Methods
Through exploring incorporation of RADA16 hemostatic agent into standard of care, 15 higher-risk facelift patients were treated intraoperatively between December 2020 and July 2021. Postoperative follow-up was on post-procedure day 1 and 3 and at approximately one week. During follow-up, potential complications were assessed subjectively, including hematoma, swelling, and bruising; postoperative observations recorded; and photographs taken.

Results
Among facelift patients receiving intraoperative RADA16 hemostatic agent there were no hematomas or protracted ecchymosis events. The only significant complication was one patient admitted for intravenous hydration due to post-operative nausea and vomiting. All patients had minimal bruising or a dramatic absence of bruising and experienced no hemorrhage or hematoma. Through surgical experience, technique for RADA16 hemostatic agent placement was optimized and procedural details are provided.

Conclusions
Intraoperative administration of topical RADA16 hemostatic agent appears to deter acute hematoma and hemorrhage formation and early experience suggests that RADA16 hemostatic agent may also attenuate post-operative bruising in facelift patients. These observations warrant further investigation in a larger randomized controlled study.

Level of Evidence: 4
Coordination of care by breeders and helpers in the cooperatively breeding long-tailed tit
Authors: Halliwell Chay , Beckerman Andrew P , Germain Marion , Patrick Samantha C , Leedale Amy E , Hatchwell Ben J 
Published: April 2022

Abstract
In species with biparental and cooperative brood care, multiple carers cooperate by contributing costly investments to raise a shared brood. However, shared benefits and individual costs also give rise to conflict among carers conflict among carers over investment. Coordination of provisioning visits has been hypothesized to facilitate the resolution of this conflict, preventing exploitation, and ensuring collective investment in the shared brood. We used a 26-year study of long-tailed tits, Aegithalos caudatus, a facultative cooperative breeder, to investigate whether care by parents and helpers is coordinated, whether there are consistent differences in coordination between individuals and reproductive roles, and whether coordination varies with helper relatedness to breeders. Coordination takes the form of turn-taking (alternation) or feeding within a short time interval of another carer (synchrony), and both behaviors were observed to occur more than expected by chance, that is, “active” coordination. First, we found that active alternation decreased with group size, whereas active synchrony occurred at all group sizes. Second, we show that alternation was repeatable between observations at the same nest, whereas synchrony was repeatable between observations of the same individual. Active synchrony varied with reproductive status, with helpers synchronizing visits more than breeders, although active alternation did not vary with reproductive status. Finally, we found no significant effect of relatedness on either alternation or synchrony exhibited by helpers. In conclusion, we demonstrate active coordination of provisioning by carers and conclude that coordination is a socially plastic behavior depending on reproductive status and the number of carers raising the brood.
Bio-inspired chemical space exploration of terpenoids
Authors: Zeng Tao , Hess, Jr. Bernard Andes , Zhang Fan , Wu Ruibo 
Published: April 2022

Abstract
Many computational methods are devoted to rapidly generating pseudo-natural products to expand the open-ended border of chemical spaces for natural products. However, the accessibility and chemical interpretation were often ignored or underestimated in conventional library/fragment-based or rule-based strategies, thus hampering experimental synthesis. Herein, a bio-inspired strategy (named TeroGen) is developed to mimic the two key biosynthetic stages (cyclization and decoration) of terpenoid natural products, by utilizing physically based simulations and deep learning models, respectively. The precision and efficiency are validated for different categories of terpenoids, and in practice, more than 30 000 sesterterpenoids (10 times as many as the known sesterterpenoids) are predicted to be linked in a reaction network, and their synthetic accessibility and chemical interpretation are estimated by thermodynamics and kinetics. Since it could not only greatly expand the chemical space of terpenoids but also numerate plausible biosynthetic routes, TeroGen is promising for accelerating heterologous biosynthesis, bio-mimic and chemical synthesis of complicated terpenoids and derivatives.
E-learning strategies from a bioinformatics postgraduate programme to improve student engagement and completion rate
Authors: Garzón Andrés , Rubio Alejandro , Pérez-Pulido Antonio J 
Published: April 2022

Abstract

Motivation
E-learning is the standard solution adopted in transnational study programmes for which multiple face-to-face learning places are not an option. Bioinformatics is compatible with e-learning because its resource requirements are low. Online learning, however, is usually associated with high dropout rates because students start from a very low computational level and/or they need support to conduct practical analyses on their own.

Results
In this article, we analyse the academic results of an online bioinformatics educational programme based on learning communities. The programme has been offered by the Spanish Pablo de Olavide University for more than 5 years with a completion rate of close to 90%. Learning bioinformatics requires technical and operational competencies that can only be acquired through a practical methodology. We have thus developed a student-centred and problem-based constructivist learning model; the model uses faculty and peer mentoring to drive individual work and retain students. Regarding our innovative learning model, the recruitment level (i.e. the number of applicants per available places and international origin), the results obtained (i.e. the retention index and learning outcomes) as well as the satisfaction index expressed by students and faculty lead us to regard this programme as a successful strategy for online graduate learning in bioinformatics.

Availability and implementation
All data and results for this article are available in the figures and supplementary files. The current syllabus (Supplementary File S7) and other details of the course are available at: https://www.upo.es/postgrado/Diploma-de-Especializacion-Analisis-Bioinformatico and https://www.upo.es/postgrado/Master-Analisis-Bioinformatico-Avanzado.

Supplementary information
Supplementary data are available at Bioinformatics Advances online.