bluuebunny/crossref_metadata_2025_split huggingface dataset:
Detection device of the nuclear power plant electric actuator development and application
Authors: Wang Xiaolong , Xia Ming , Yin Yelei , Zheng Hai , Luo Yu 
Published: December 2024

Abstract
In order to realize the parameters of the full life cycle of the nuclear power plant (new purchase, operation, use, maintenance, and scrap) parameter, we improve the multi-parameter of the entire working conditions (air rotation, plugging, opening/closing, different load rates) under different conditions of the source traceability. For the construction of the chain and mastering of the offline detection technology of electric actuators, this article introduces an electric actuator detection device and detection method designed based on the principle of hydraulic dynamics. Device and computer, data analysis processing software form a complete set of equipment to detect the torque, speed, and power output of the electric actuator.
Research on rolling bearing fault diagnosis method based on SBOA-Optimized FMD
Authors: Hu Yangyang , Tian Jingyi , Qi Houjun 
Published: December 2024

Abstract
To address the challenges in extracting rolling bearing fault features and the parameter sensitivity of Feature Mode Decomposition (FMD), this study introduces a novel approach that integrates the Secretary Bird Optimization Algorithm (SBOA) with FMD. The proposed method leverages SBOA to identify the most suitable parameter settings for FMD, employing the minimum arrangement entropy as the objective function. The optimized FMD is then employed to process the raw signals. The most informative components are selected based on the correlation coefficient-cliffiness index. Their time-domain characteristics and multiscale dispersion entropy (MDE) are computed to construct the fault feature vectors. Finally, SVM with SBOA optimization is used for classification. Empirical results show that SBOA-FMD achieves better fitness values than other methods with the same number of iterations. The method achieves an average recognition accuracy of 99.45%, demonstrating its effectiveness.
Adaptive RBF iterative learning tracking control of multi-degree-of-freedom manipulators
Authors: Wang Ziqiang , Hu Jian 
Published: December 2024

Abstract
Targeting on the issue of poor dynamic performance of multi-degree-of-freedom manipulator system under disturbance environment and model parameter uncertainty, this paper designs an adaptive iterative learning tracking control method utilizing a radial basis function (RBF) neural network observer, aiming at realizing stable control and disturbance suppression of closed-loop system. The controller consists of the proportional-differential term based on the backstepping method, the sign function robust term of adaptive sliding mode, and the disturbance observation term of the RBF neural network. The sign function robust term compensates for the repetitive disturbance of the system, and the RBF observer compensates for the non-repetitive disturbance of the system. Under the premise of ensuring the normal functioning of the control system, the sliding mode parameter is updated in the iterative domain, and the RBF network weight parameter is updated in the time domain to enhance the system’s robustness. Simultaneously, the stability of the closed-loop system within the iterative domain and the convergence of the tracking error are demonstrated using the Lyapunov composite energy theory. Finally, the proposed control method’s efficacy and robustness are validated through simulation and experiment.
Research on optimization of PMSM vector control system of electric power bicycle based on fuzzy sliding mode control
Authors: Wang Jia , Bo Jia Xiao , Fu Wang Guo , Hui Meng Dong , Mo Tao , Ni Xing Wan 
Published: December 2024

Abstract
In the double closed loop vector control system of electric power highway vehicle motor, the traditional control method can not meet the high-performance requirement of frequent speed regulation of vehicle motor, and the motor must not only respond in real time but also can not chatter, to ensure the stability of the car. Considering the current situation, this paper designs an optimized integral sliding mode controller and uses a new and continuous saturation function to replace the traditional symbolic function, so as to improve the anti-jamming ability and stability of the system. The real-time adjustment of the parameters of the sliding mode reaching law by using the fuzzy control strategy can not only improve the adaptability of the system in the face of different operating states, but also reduce the occurrence of chattering. The simulation results show that the PMSM vector control system based on optimized fuzzy sliding mode control technology has excellent performance in anti-interference and robustness, and is especially suitable for the accurate control of electric power transmission.
Simulation and optimization of paddle control for small electric ship
Authors: He Jie , Yao Yun , Zhou Yonghao 
Published: December 2024

Abstract
Aiming at the problems of weak anti-interference ability, slow response speed, and unstable motor speed of traditional PID control for electric small ships, a simulation model of the oar is designed by combining the key factors of ship displacement, ship speed, and ship situation resistance. The load of the ship’s propulsion motor during operation is simulated. Combined with the motor model, the motor speed curve and the ship speed prediction curve under PID control and fuzzy control are observed. A more stable and faster response speed electric ship control method is obtained.
Fuzzy PID control based on variable universe for PMSM
Authors: Huang Xiaochao , Sun Gang , Wang Bi , Shi Yue , He Wuyang , Wang Jun , Liu Guodong 
Published: December 2024

Abstract
This paper aims to design a speed controller for PMSM so that the motor can track the given speed signal. Based on vector control strategy, united with SVPWM (Space Vector Pulse Width Modulation) technology, an on-off of inverter switches was regularly controlled to form the vector voltage to drive PMSM. Finally, the PMSM double closed-loop vector control system was built. Specifically, by the design of the speed controller method, a fuzzy PID control, according to the variable universe, was proposed to realize the high precision control requirements of the PMSM speed control system. Firstly, on the ground of the traditional PID controller, a fuzzy controller was introduced to realize the self-tuning of control parameters, and then a new function variable domain module was built to reach the self-adjustment of the fuzzy controller domain and to achieve self-tuning of control rules, improving control accuracy and response speed.
The quantum convolution product
Authors: Aniello Paolo 
Published: December 2024

Abstract
In classical statistical mechanics, physical states (probability measures) are embedded in the Banach algebra of complex Borel measures on phase space, where the algebra product is realized by convolution. Convolution is state-preserving; namely, the convolution of two classical states is a state too. This is a special case of the convolution algebra of all complex measures on a locally compact group. A natural problem is whether an analogous structure may emerge in the quantum setting. By resorting to a group-theoretical construction, a quantum counterpart of the convolution of probability measures — the twirled product, or quantum convolution — can be introduced, yielding a group-covariant, associative binary operation on the states of a quantum system, that preserves the convex structure of this set. The analogy with the classical setting becomes striking in the case where the symmetry group is abelian. We focus, in particular, on the quantum convolution product stemming from the group of phase-space translations.
Higher Time Derivative Theories From Integrable Models
Authors: Turner Bethan 
Published: December 2024

Abstract
Higher Time Derivative Theories are generated by considering space-time roated KdV and mKdV systems. These systems are then studied to see if/how instabilities, usually associated with higher time derivative theories, manifest on the classical level by presenting both analytic and numerical solutions. For a linearised version of these space-time rotated systems we present a detailed quantisation of the theory that highlights the known dilemma on higher time derivative theories, that we have either negative norm states or the Hamiltonian being unbounded from below.
Yangians for cotangent Lie algebras and the affine Grassmannian
Authors: Abedin Raschid , Niu Wenjun 
Published: December 2024

Abstract
We present a canonical construction of the Yangian for cotangent Lie algebras and explain its relation with the geometry of the equivariant affine Grassmannian. The category of coherent sheaves on the latter provides a geometric realization of line operators in a certain 4d holomorphic-topological gauge theory.
Kontsevich graphs act on Nambu–Poisson brackets, III. Uniqueness aspects
Authors: Schipper F M , Jagoe Brown M S , Kiselev A V 
Published: December 2024

Abstract
Kontsevich constructed a map between ‘good’ graph cocycles γ and infinitesimal deformations of Poisson bivectors on affine manifolds, that is, Poisson cocycles in the second Lichnerowicz–Poisson cohomology. For the tetrahedral graph cocycle γ
3 and for the class of Nambu-determinant Poisson bivectors P over ℝ2, ℝ3 and ℝ4, we know the fact of trivialization,

P

˙

=
〚
P
,

X

→

dim

γ3

〛

, by using dimension-dependent vector fields

X

→

dim

γ3

expressed by Kontsevich (micro-)graphs. We establish that these trivializing vector fields

X

→

dim

γ3

are unique modulo Hamiltonian vector fields

X

→

H

=

d

P

(
H
)

=
〚
P
,
H
〛

, where d
P
is the Lichnerowicz–Poisson differential and where the Hamiltonians H are also represented by Kontsevich (micro-)graphs. However, we find that the choice of Kontsevich (micro-)graphs to represent the aforementioned multivectors is not unique.
Remarks on Common Representation Theory of Gauge Theories
Authors: Dahm Rolf 
Published: December 2024

Abstract
Whereas the standard representation (rep) theory of gauge theories relies on quantum field theory (QFT), based on point coordinates x

µ
and certain Lie symmetries, we discuss some aspects of a geometrical background pattern able to explain such rep theory and the known unitary symmetries from scratch. Switching to lines as geometrical base elements of space-time instead of point coordinates, line geometry induces a concept to identify quantum theories directly with the description of forces and moments. Moreover, sets of lines and their properties correspond to known physical notions, and line Complexe allow a natural approach to gauge descriptions, chiral rep theory, 3-dimensional complex spaces, grouping into families, triality, etc. Beyond Riemannian geometry, line geometry naturally adds symplectic geometry in P
3, and its rep theory yields cubic curves as well as quartic surfaces. Last not least, it not only respects quadratic invariants advocated by bi-linear symmetric forms and orthogonal or unitary transformations, but projective geometry also allows to incorporate the complete invariant theory in a well-defined manner.
Research on network interference problems in intelligent manufacturing
Authors: Wang Yu , Liu Qingquan , Jiang Zhenpeng , Zheng Di , Shi Ronghua 
Published: December 2024

Abstract
As the smart manufacturing industry continues to grow, ensuring high-quality data transmission has become especially critical. In wireless communication networks, numerous sources of interference exist, especially significant in restricted space environments such as factories. These areas are subject to signal interference from same-frequency devices and interference from multipath propagation due to signal reflection in buildings. In order to guarantee the communication quality of smart manufacturing systems, reducing network interference in such spaces is a prerequisite; therefore, it becomes crucial to reduce various network interferences. In this study, a scheme combining orthogonal frequency division multiplexing (OFDM) and multiple-input multiple-output (MIMO) techniques is proposed to cope with the interference problem of the network in the smart manufacturing process.
Towards a More Conventional Approach: Article 10 and Unfair Dismissal in England (Case Comment)
Authors: Murray James 
Published: December 2024

Abstract
This case note considers the case of Aghajanyan v Armenia and gives comment on how it impacts protection for Article 10 Convention rights in the context of the employment relationship, with particular focus on how it might impact the development of the English law of unfair dismissal in the context of both current and future law. The note highlights that Aghajanyan reinforces the robust Article 10 protection for certain types of expression within the employment relationship, notwithstanding any countervailing contractual obligations or duties which a speaker has to their employer, and outlines the analytical approach which the Strasbourg court will expect of national courts and tribunals with respect to applying a proportionality analysis when dismissal is consider (which, in the context of English unfair dismissal law, overlays the test of reasonableness which is specified by statute). The concept of an Article 10 ersatz whistleblower is also considered, namely whether the application of a Convention proportionality test, actually creates a middle ground of enhanced protection for those raising matters of public interest but don’t meet the strict tests under English law for formal statutory protection as whistleblowers. It will conclude that English tribunals’ rather inconsistent approach to Article 10 protection in the context of unfair dismissal is ripe for review in line with Aghajanyan, and that now is particularly appropriate time for such a review given the expansion of the unfair dismissal right under English law.
The Use of POCUS to Identify Subgaleal Fluid Collections and Intracranial Infections
Authors: Andreas Shaheen , Chicaiza Henry , Shah Rahul 
Published: December 2024

Abstract
Point-of-care ultrasound (POCUS) has been useful in describing soft tissue infections, such as cellulitis and abscesses. There has been limited use of ultrasound to describe findings of intracranial infections, such as Pott's puffy tumor, in cases of forehead prominence and signs of infection. In this case series we present POCUS findings in 2 cases of intracranial infections and one case of soft tissue edema without intracranial involvement from a single pediatric tertiary care center. Ultrasound findings revealed subgaleal fluid collections with associated periosteal lifting of the frontal bone in cases of Pott's Puffy tumor and intracranial infection, but no bony disruption or periosteal lifting in the patient with traumatic soft tissue edema. As pediatric intracranial infections may continue to have uncharacteristic seasonal peaks, POCUS may be considered as a first-line imaging technique for patients presenting with forehead swelling for differentiating infectious and traumatic etiologies as well as judging the need for further imaging techniques such as computed tomography and magnetic resonance imaging.
Invasion of the Cavernous Sinus Medial Wall by Pituitary Adenomas: Intraoperative Evaluation and the Clinical Efficacy of the Cavernous Sinus Medial Wall Resection in the Treatment of Somatotroph Adenomas
Authors: Liang Xiao , Fan Yuyuan , Liu Pengfei 
Published: December 2024

Background:
Pituitary adenomas are common benign intracranial tumors. This study aimed to explore the relevant factors influencing the cavernous sinus medial wall invasion by Pituitary adenomas based on intraoperative evaluation. Meanwhile, the authors introduced a safe technique for the resection of the medial wall of the cavernous sinus and conducted a preliminary evaluation of the efficacy of this technique.

Methods:
The clinical data of 108 patients with pituitary adenomas who underwent surgery at our institution were collected. Binary logistic regression analysis was utilized to identify independent predictors of medial wall invasion. Furthermore, the authors performed medial wall resection on 12 cases of somatotroph adenomas with medial wall invasion to initially assess the surgical efficacy of this technique for somatotroph adenomas.

Results:
Multivariate Logistic regression analysis showed that tumor Knosp grade and somatotroph adenomas were independent predictors of medial wall invasion (P<0.05). For somatotroph adenomas, medial wall resection resulted in a high biochemical remission rate (83%), and all patients were free of recurrence at the last follow-up.

Conclusion:
Higher knosp grade and somatotroph adenomas will increase the risk of medial wall invasion of the cavernous sinus. Relying solely on the Knosp grade system to evaluate tumor invasion of the medial wall without differentiating between tumor subtypes is inaccurate. Invasion of the medial wall may be a cause of low biochemical remission rates and recurrence after surgery for somatotroph adenomas. The technique of medial wall resection is safe and effective, and holds significant importance in the treatment of somatotroph adenomas.
Coordinating assemblages: accounting for a novel disaster
Authors: Sargiacomo Massimo , Martinez Daniel , Servalli Stefania , Gitto Antonio , D'Andreamatteo Antonio 
Published: December 2024

PurposeThis study aims to examine how hospitals and regional and local health authorities in the Italian region of Marche accounted for and reported the use of emergency funds from the EU, the Ministry of Economic and Finance and administrative bodies called actuator subjects. Unlike a sudden impact disaster, such as an earthquake, the pandemic was slow moving and novel. This meant that the guidelines for medical, legislative, financial and administrative action were not as developed as those for sudden impact emergencies with which the Italian state was, unfortunately, experienced.Design/methodology/approachThe paper investigates the Italian public healthcare setting since the declaration of the State of Emergency until its end—that is, from January 2020 to July 2021. We conducted 31 semi-structured interviews with nine key-actors working for national, regional and local administrative bodies. A range of related official documents were analyzed.FindingsWe show a non-linear and emergent account of standardization and coordination. We show how different state and transnational actors developed their own procedures to standardize COVID-related cost classifications and reports. These attempts also involved coordinating assemblages, at the center of which are templates imposed on hospitals and regional authorities by national state entities for cost-reporting practices and aggregation. Importantly, templates’ visual features enabled coordination across the different standardization initiatives that populated the emergency response effort.Research limitations/implicationsThe paper provides academics and policy makers with insights into the role played by accounting tools, templates, reports and guidelines to coordinate different cost standardization initiatives.Originality/valueAccounting guidelines that standardize costs are known to be deployed hierarchically by states and transnational organizations for coordination purposes. We highlight, however, the emergence of not only hierarchical forms of coordination but also their interrelation with decentralized forms of coordination. These two types of coordinating assemblages, each standardizes cost through the accounting templates that they use. We demonstrate the emergent nature of coordination even within hierarchical entities like the state. Reporting templates are pivotal for understanding this coordination process. However, when a centralized coordinating body is absent, it is the visual features of accounting, rather than its imposition, that enable coordination.
Poynting and polarization vectors mixed imaging condition of source time‐reversal imaging
Authors: Hu Nan , Li Hao , Zhao Yunsheng , Lu Yongming , Lei Tao , He Mei , Jiang Xingda , Zhang Wei 
Published: December 2024

AbstractSource time‐reversal imaging based on wave equation theory can achieve high‐precision source location in complex geological models. For the time‐reversal imaging method, the imaging condition is critical to the location accuracy and imaging resolution. The most commonly used imaging condition in time‐reversal imaging is the scalar cross correlation imaging condition. However, scalar cross‐correlation imaging condition removes the directional information of the wavefield through modulus operations to avoid the direct dot product of mutually orthogonal P‐ and S‐waves, preventing the imaging condition from leveraging the wavefield propagation direction to suppress imaging artefacts. We previously tackled this issue by substituting the imaging wavefield with the energy current density vectors of the decoupled wavefield, albeit at the cost of increased computational and storage demands. To balance artifact suppression with reduced computational and memory overhead, this work introduces the Poynting and polarization vectors mixed imaging condition. Poynting and polarization vectors mixed imaging condition utilizes the polarization and propagation direction information of the wavefield by directly dot multiplying the undecoupled velocity polarization vector with the Poynting vector, eliminating the need for P‐ and S‐wave decoupling or additional memory. Compared with scalar cross‐correlation imaging condition, this imaging condition can accurately image data with lower signal‐to‐noise ratios. Its performance is generally consistent with previous work but offers higher computational efficiency and lower memory usage. Synthetic data tests on the half‐space model and the three‐dimensional Marmousi model demonstrate the effectiveness of this method in suppressing imaging artefacts, as well as its efficiency and ease of implementation.
Field Evaluations of a Novel Biodegradable Microfibrillated Cellulose Hydrogel Bait Targeting the Invasive White‐Footed Ant, Technomyrmex brunneus
Authors: Terayama Mamoru , Kankawa Toshiyuki , Shirai Hideo , Tomioka Yasuhiro , Kohno Shuhei , Matsumoto Kazuya , Kutsukake Joe , Sunamura Eiriki , Eguchi Katsuyuki 
Published: December 2024

ABSTRACTThe development of more effective control methods for invasive alien ants is crucial, given the extensive damage these ants cause. In recent years, hydrogel baits—superabsorbent polymers containing a water solution of insecticides and ingredients that promote or attract ant feeding—have been developed and used to control invasive ants. More recently, biodegradable hydrogel baits have been developed and tested for efficacy. We have developed a new type of biodegradable hydrogel bait in which microfibrillated cellulose (MFC) derived from plant cellulose acts as a gelling agent. A cafeteria experiment, including the conventionally used sodium polyacrylate hydrogel bait and the newly developed biodegradable MFC hydrogel baits with various chemical properties, showed that both types of hydrogel bait were highly effective in recruiting workers of the invasive white‐footed ant, Technomyrmex brunneus, to the same degree. Among the MFC hydrogel baits tested, the more effective substrates were selected, and their control efficacy was confirmed in field experiments; baiting at 2‐week intervals reduced the population of T. brunneus by more than 90%. The biodegradable MFC hydrogel baits have substantial potential to effectively control invasive ants, with a smaller environmental impact than the conventional sodium polyacrylate hydrogel baits.