bluuebunny/crossref_metadata_2025_split huggingface dataset:
Speech-Language Pathologists' Perceptions of the Severity of Speech Sound Disorder
Authors: Moser Alexis , Farquharson Kelly , Bush Erin J. , Louw Brenda 
Published: February 2025

Purpose:
Severity is a qualitative judgment typically made by speech-language pathologists (SLPs) to represent the impact of speech sound disorder (SSD) on a child's functional communication. Despite the influence of severity on clinical practice, there is no gold standard as to how SLPs should determine such a rating. The purpose of this study was to explore SLPs' perceptions regarding the concept of severity of SSD.

Method:
An embedded mixed-methods research design was selected for this study to support the collection and analysis of both quantitative and qualitative data. An online survey of 30 closed-ended and 10 open-ended questions was created using Research Electronic Data Capture and disseminated to currently practicing SLPs across the United States. A total of 296 surveys were completed, and data were analyzed using descriptive statistics for the quantitative data and inductive content analysis for the qualitative data.

Results:
The majority of SLPs reported that they determine severity when assessing children with SSD. However, the mixed-methods analysis showed that SLPs disagreed in their decision making on whether to use severity ratings. The top five factors SLPs consider when judging severity are types of errors, intelligibility, perceptual judgment, normative data for speech sound development, and standardized percentile rankings with the addition of stimulability through qualitative responses.

Conclusions:
SLPs need a standard biopsychosocial model for determining severity that truly evaluates the “impact” of SSD on a child's communicative participation and attitudes. Recommendations for clinical use of holistic assessments and future research on currently established severity rating scales are discussed.
Insurance and In-hospital Outcomes of Type A Aortic Dissection Repair: A Population Study of National Inpatient Sample from 2015–2020
Authors: Li Renxi , Huddleston Stephen 
Published: February 2025

Abstract
Background Although insurance status has been linked to surgical outcomes in thoracic aortic operations, its specific association with the outcomes of Type A Aortic Dissection (TAAD) repair remains underexplored. This study aimed to conduct a comprehensive, population-based analysis to assess the association between insurance status and in-hospital outcomes after TAAD repair using a national registry.
Methods Patients who underwent TAAD repair were identified in National Inpatient Sample from the last quarter of 2015 to 2020. Multivariable logistic regressions were used to compare in-hospital outcomes between patients using public and private insurance while adjusting for demographics, comorbidities, hospital characteristics, primary payer status, and transfer-in status.
Results There were 2,380 (55.58%) and 1,468 (34.28%) patients under public and private insurance, respectively. Patients under public and private insurance had comparable time from admission to operation (p = 0.08) and adjusted in-hospital mortality rates (aOR = 1.172, 95 CI = 0.925–1.484, p = 0.19). However, patients under public insurance had higher mechanical ventilation (aOR = 1.185, 95 CI = 1.024–1.373, p = 0.02), acute kidney injury (aOR = 1.213, 95 CI = 1.052–1.399, p = 0.01), and infection (aOR = 1.428, 95 CI = 1.087–1.876, p = 0.01). Moreover, patients under public insurance had higher transfer-out rate (p < 0.01), longer length of stay (p < 0.01), and higher total hospital charge (p < 0.01).
Conclusion Although patients with public insurance had comparable adjusted mortality outcomes to those of privately insured patients, they experienced higher rates of postoperative complications and resource utilization. Future studies should investigate the underlying systemic reasons for these disparities and explore strategies for improving surgical outcomes and ensuring equitable healthcare delivery for these vulnerable populations.
Temporal Trends in Pulmonary Embolism Mortality Associated with COVID-19 in the United States: A 5-Year Retrospective Analysis
Authors: Lippi Giuseppe , Mattiuzzi Camilla 
Published: February 2025

AbstractCoronavirus disease 2019 (COVID-19) has been strongly associated with thrombotic complications, particularly pulmonary embolism (PE). This study aims to analyze the real-world impact of COVID-19 on PE-related mortality in the United States over the first 5 years of the pandemic. We conducted a retrospective observational study using the CDC WONDER database, combining data on mortality from PE and COVID-19 using the 10th revision of the International Classification of Diseases (ICD-10) codes I26 (PE) and U07.1 (COVID-19). The analysis spanned from 2020 to 2024. We found a peak in COVID-19-associated PE deaths in 2021, with an estimated crude rate of 211 × 1,000 PE deaths. This rate progressively declined over the following years, being 141 × 1,000 in 2022, 44 × 1,000 in 2023, and 29 × 1,000 in 2024, respectively. The estimated crude rate for COVID-19-associated PE in the United States was 111 × 1,000 PE deaths throughout the 5-year period. The results of our study show that COVID-19 may have contributed to nearly one-tenth of all PE deaths throughout the first 5 years of the pandemic. Despite the gradual decline over the years since its peak in 2021, the still sustained mortality suggests ongoing thrombotic risks, especially impacting high-risk populations, emphasizing the need for continued vigilance and prevention of thrombotic complications in COVID-19 patients.
Prediction of new functional fluorooxoborates with expected anionic framework: a case of CaB3O5F
Authors: Zhang Ke-Wang , Jin Wen-Qi , Li Ke , Tudi Abudukadi , Liu Lin-Lin , Xie Cong-Wei , Xie Yu 
Published: February 2025

Abstract
The prediction of new fluorooxoborates as ultraviolet (UV)/deep ultraviolet (DUV) opto-electronic functional materials from a largely unexplored chemical space is a challenging task. It has been suggested that the anionic frameworks formed by B-O and B-O-F units significantly influence on the physical properties of fluorooxoborates. Therefore, the rational design of anionic frameworks could facilitate the materials discovery process. Herein, we propose that a candidate anionic framework can be efficiently derived from an existing one by slightly altering its oxygen content. Following this idea, we hypothesized the existence of a 1D [B3O5F]∞ chain from the well-known 2D [B6O9F2]∞ layer. Accordingly, seven CaB3O5F structures with the expected anionic framework were successfully predicted. First-principles calculations show that all these structures have potential in the UV/DUV birefringent or nonlinear optical (NLO) material field, indicating that the 1D [B3O5F]∞ chain is indeed a promising anionic framework for achieving UV/DUV birefringent and NLO performance.
VAE+CycleD2GAN-based Generative Method of synchronous Solar/planetary Spectral Pairs for Celestial Doppler Difference Velocimetry Navigation
Authors: Liu Jin , Zhang Zijun , Ning Xiaolin , MA Xin , Chen Xiao 
Published: February 2025

Abstract
The measurement of the celestial Doppler difference velocimetry navigation is the Doppler difference between the solar spectrum and the planetary spectrum. The asynchronous solar/planetary spectral pairs in the existing database lead to the difficulty in the verification of the celestial Doppler difference velocimetry navigation. To solve this problem, we propose a VAE+CycleD2GAN-based generative method of synchronous solar/planetary spectral pairs, which fuse variational auto-encoder (VAE), cycle generative adversarial network (CycleGAN), dual discriminator generative adversarial nets (D2GAN). In CycleGAN, asynchronous solar spectra and planetary spectra are used as the training set to generate synchronous solar/planetary spectral pairs. Due to small samples in the existing spectral database, we explore the strong generalization ability of the latent space in VAE to improve CycleGAN and ensure its learning effectiveness. A double discriminator structure is introduced in VAE+CycleGAN to restrain the disadvantage of training instability and mode collapse, which can effectively capture spectral distribution patterns and improve the quality of generated spectra. Experimental results show that, compared with the asynchronous solar/planetary spectral pairs, the VAE+CycleD2GAN-based generative method produces synchronous solar/planetary spectral pairs, improving the velocimetry accuracy of the synchronous ones by more than 50%, and enhancing the position and velocity accuracies of navigation by more than 12% and 33%, respectively. The research demonstrates that the proposed method provides strong technical support for the feasibility of the celestial Doppler difference velocimetry navigation.&#xD;
Plateaux of probability for the expanded quantum inﬁnite well
Authors: Chamizo Fernando , Raboso Dulcinea , Santillan Osvaldo P 
Published: February 2025

Abstract
If the standard 1D quantum infinite potential well initially in its ground state suffers a&#xD;sudden expansion, it turns out that in the evolution of the system they may appear plateaux&#xD;of probability for some fractional times, as noticed by C. Aslangul in 2008. We introduce a&#xD;mathematical framework to explain this phenomenon. Remarkably, the characterization of&#xD;these plateaux depends on nontrivial number theoretical considerations.
Interacting Mathieu equation, synchronization dynamics and collision-induced velocity exchange in trapped ions
Authors: Benbouza Asma , Lin Xiaoshui , Cui Jingming , Gong Ming 
Published: February 2025

Abstract
Recently, large-scale trapped ion systems have been realized in experiments for quantum simulation and quantum computation. They are the simplest systems for dynamical stability and parametric resonance. In this model, the Mathieu equation plays the most fundamental role for us to understand the stability and instability of a single ion. In this work, we investigate the dynamics of trapped ions with the Coulomb interaction based on the Hamiltonian equation. We show that the many-body interaction will not influence the phase diagram for instability. Then, the dynamics of this model in the large damping limit will also be analytically calculated using few trapped ions.&#xD;Furthermore, we find that in the presence of modulation, synchronization dynamics can be observed, showing an exchange of velocities between distant ions on the left side and on the right side of the trap. These dynamics resemble to that of the exchange of velocities in Newton’s cradle for the collision of balls at the same time. These dynamics are independent of their initial conditions and the number of ions. As a unique feature of the interacting Mathieu equation, we hope this behavior, which leads to a quasi-periodic solution, can be measured in current experimental systems. Finally, we have also discussed the effect of anharmonic trapping potential, showing the desynchronization during the collision process. It is hopped that the dynamics in this many-body Mathieu equation with damping may find applications in quantum simulations. This model may also find interesting applications in dynamics systems as a pure mathematical problem, which may be beyond the results in the Floquet theorem.
Non-Markovian effects on the steady state properties of a damped harmonic oscillator
Authors: Farooq Faisal , Dar Irfan Ahmad , Lone Muzaffar Qadir 
Published: February 2025

Abstract
We study the steady-state characteristics of a damped harmonic oscillator (system) in presence of a non-Markovian bath characterized by Lorentzian spectral density. Although Markovian baths presume memoryless dynamics, the introduction of complex temporal connections by a non-Markovian environment radically modifies the dynamics of the system and its steady-state behavior. We obtain the steady-state Green's functions and correlation functions of the system using the Schwinger-Keldysh formalism. In both rotating and non-rotating wave approximation, we analyzed various emergent properties like effective temperature and distribution function. We also explore the impact of dissipation and non-Markovian dynamics on the quantum Zeno and anti-Zeno effects. We show that a transition between Zeno to anti-Zeno effect can be tuned by bath spectral width and the strength of dissipation.
A high light yield neutron scintillator based on Ce3+-doped lithium glass
Authors: Song Rui-Qiang , Liu Chuang , Long Yi-Yang , Han Ji-Feng , Ren Jing , Qian Sen 
Published: February 2025

Abstract
The development of low-cost and highly efficient thermal neutron detection materials to substitute the rare and expensive 3He gas is important for the area. Lithium-based glass (Li glass) is a promising candidate due to its simple fabrication process and low cost. This paper reports the optical properties and scintillation performance of a new Ce3+-doped Li glass, whose luminescence efficiency is significantly enhanced with a light yield of about 4770 ph/MeV, which is about 54% of that of BGO crystal, and the energy resolution is 14.5% for 662 keV gamma rays. The Ce3+-doped Li glass showed a high light yield of about 7058 ph/neutron, which is about 1.18 times that of the reference GS20 glass. The Ce3+ doped Li glass exhibits stronger gamma rays suppression capability compared to GS20 glass samples. Further optimizing the Ce3+ concentration and 6Li content is expected to achieve much superior neutron detection efficiency, positioning it as a promising alternative to 3He gas for efficient thermal neutron detection.
Strain-modulated Superconductivity of Monolayer Tc2B2
Authors: Liu Zhengtao , Zhang Zihan , Song Hao , Cui Tian , Duan Defang 
Published: February 2025

Abstract
Two-dimensional (2D) superconductors have attracted significant research interest due to their promising potential applications in optoelectronic and microelectronic devices. Herein, we employ first-principles calculations to predicted a new 2D conventional superconductor, Tc2B2, demonstrating its stable structural configuration. Remarkably, under biaxial strain, the superconducting transition temperature (T
c) of Tc2B2 demonstrates a significant enhancement, achieving 19.5 K under 3% compressive strain and 9.2 K under 11% tensile strain. Our study reveals that straininduced modifications in Fermi surface topology significantly enhance the Fermi surface nesting effect, which amplifies electron-phonon coupling interactions and consequently elevates T
c. Additionally, the presence of the Lifshitz transition results in a more pronounced rise in T
c under compressive strain compared to tensile strain. These insights offer important theoretical guidance for designing 2D superconductors with high-T
c through strain modulation.
Motor somatotopy impacts imagery strategy success in human intracortical brain-computer interfaces
Authors: Kunigk Nicolas G , Schone Hunter R , Gontier Camille , Hockeimer William , Tortolani Ariana F , Hatsopoulos Nicholas , Downey John , Chase Steven M , Boninger Michael L , Dekleva Brian M , Collinger Jennifer 
Published: February 2025

Abstract
The notion of a somatotopically organized motor cortex, with movements of different body parts being controlled by spatially distinct areas of cortex, is well known. However, recent studies have challenged this notion and suggested a more distributed representation of movement control. This shift in perspective has significant implications, particularly when considering the implantation location of electrode arrays for intracortical brain-computer interfaces (iBCIs). We sought to evaluate whether the location of neural recordings from the precentral gyrus, and thus the underlying somatotopy, has any impact on the imagery strategies that can enable successful iBCI control. Three individuals with a spinal cord injury were enrolled in an ongoing clinical trial of an iBCI. Participants had two intracortical microelectrode arrays implanted in the arm and/or hand areas of the precentral gyrus based on presurgical functional imaging. Neural data were recorded while participants attempted to perform movements of the hand, wrist, elbow, and shoulder. We found that electrode arrays that were located more medially recorded significantly more activity during attempted proximal arm movements (elbow, shoulder) than did lateral arrays, which captured more activity related to attempted distal arm movements (hand, wrist). We also evaluated the relative contribution from the two arrays implanted in each participant to decoding accuracy during calibration of an iBCI decoder for translation and grasping tasks. For both task types, imagery strategy (e.g., reaching vs. wrist movements) had a significant impact on the relative contributions of each array to decoding. Overall, we found some evidence of broad tuning to arm and hand movements; however, there was a clear bias in the amount of information accessible about each movement type in spatially distinct areas of cortex. These results demonstrate that classical concepts of somatotopy can have real consequences for iBCI use, and highlight the importance of considering somatotopy when planning iBCI implantation.
IGBT loss analysis and junction temperature calculation based on Simulink
Authors: Ma Long , Chen Guochu 
Published: February 2025

Abstract
The Insulated Gate Bipolar Transistor (IGBT) is a crucial component in inverter systems, and accurately modeling the IGBT in the Controller Hardware-in-the-Loop (CHIL) simulation of inverters is a key challenge. Based on an electrical model of the IGBT, this paper develops an electro-thermal coupling model for IGBT suitable for Hardware-in-the-Loop (HIL) simulation. An IGBT loss model is established, and junction temperature calculations are performed. For a specific Infineon IGBT model, the simulation results obtained from Infineon’s IPOSIM online simulation platform are compared with offline simulation results generated using a fourth-order Foster thermal model in Matlab/Simulink, verifying the accuracy of the proposed model.
A lyapunov function-based switched control method for power source
Authors: Zheng Ge , Guo Xinyu , Guan Shilei , Yin Hui , Wu Yan 
Published: February 2025

Abstract
Standard power sources have wide applications in fields such as healthcare, measurement and control, education, scientific research, and metrology. This paper proposes a switched control method based on the Lyapunov function for power sources based on digital power amplifiers run as inverters and a new selection method for switching states. Combining the two methods in power sources ensures and improves the system’s stability. In addition, the proposed switching state selection method reduces the computation of the power source system, and the switching loss of IGBTs decreases and is distributed. A MATLAB/Simulink model utilizing the switching state selection method and Lyapunov function is developed, confirming its feasibility.
Study of sliding mode weak magnetic control of built-in permanent magnet synchronous motor
Authors: Jia Yuxin , Liu Weiting , Wei Haifeng , Zhang Yi 
Published: February 2025

Abstract
A single current regulator weak magnet control method is proposed for built-in permanent magnet synchronous motors (IPMSM). To enhance the robustness, the method proposes a novel and improved dual-power convergent rate-integrated terminal sliding mode control (ITSMC) in the velocity outer loop of the single current regulator-variable q-axis voltage (SCR-VQV) weak magnet control strategy to replace the conventional PI control. Finally, the weak magnetic capability of the improved weak magnetic control algorithm with stabilized depth is verified on a MATLAB simulation platform.
Low-temperature drift and high-accuracy MEMS pressure sensor with inverted package structure
Authors: Wang Shengqi , Shi Zhou , Han Xiangguang , Zhao Libo , Wang Jiuhong 
Published: February 2025

Abstract
For the application requirements in the temperature range of-40 to 150°C, A pressure sensor with high accuracy and low-temperature drift has been developed by using MEMS (MEMS, Micro-Electro-Mechanical System) technology and SOI (Silicon-On-Insulator) substrate. The silica isolation of SOI is utilized to address the electrical failure of the force-sensitive chip at elevated temperatures. The ion implantation process was optimized to reduce output drift and accuracy drift of the chip with temperature. The back bottom pressure-bearing flushed package structure is designed, and the glass sintering process is used to reduce the lumen effect and improve the frequency response and anti-interference capability of the sensor. The test results show that the sensor has an accuracy error of ±0.2% of Full Scale (FS) over the temperature range of -40 to 150°C. The sensor displays the thermal sensitivity drift of -0.07% FS and the thermal zero drift of +0.006% FS.
Awareness of Building Information Modelling Incentive Scheme in The Malaysian Construction Industry
Authors: Lew Y L , Ng C J , Lee W P , Yow L P 
Published: February 2025

Abstract
This research addressed the lag in Building Information Modelling (BIM) adoption within the Malaysian Construction Industry by examining BIM incentive schemes. The objectives of this study include the identification of barriers in implementing BIM, identification of the awareness level among local construction industry practitioners towards the BIM and to determine the types of incentive scheme that can encourage implementation of BIM in Malaysian Construction Industry. Questionnaire survey which involving 107 potential and existing BIM users was collected. The findings revealed that significant barriers to BIM implementation included high initial cost, lack of BIM skilled workers, high price of digital tools. The awareness of respondents towards BIM incentives schemes was assessed on Situation Awareness Global Assessment Technique (SAGAT), more than half of the respondents were found to be unaware about BIM incentive scheme. Among the types of incentives that can encourage BIM implementation, combination of all incentive benefits received the highest mean ranking, followed by moral incentives such as free BIM training and software support. The findings from this study can assist construction professionals, especially potential and existing BIM users, in increasing awareness of incentive schemes for wider BIM adoption within their organizations.
Sustainable Cement Sand Bricks: Utilizing Palm Oil Fuel Ash (POFA) and Cockle Shells as Cement and Sand Replacements for Enhanced Performance and Eco-Efficiency
Authors: Jun C K H , Yassin N I M , Burhanudin M K , Adnan S H 
Published: February 2025

Abstract
Sustainable bricks are vital for eco-efficiency and green building. Their popularity is rising in construction due to raw material shortages, the environmental impact of cement, and sand depletion in brick production. This study aims to evaluate the compressive strength, water absorption, and initial rate of absorption of sustainable bricks made from POFA and cockle shell waste, following American Society for Testing and Materials (ASTM) standards for non-load bearing bricks. POFA replaced 10% of the cement, while cockle shells replaced 10%, 20%, and 30% of the sand. The cement/sand ratio was 1:6, and the water/cement ratio was 0.5. Water curing was used for the brick samples. Results indicated that the optimal mix with 10% POFA and 20% cockle shell yielded the highest compressive strengths of 19.2 MPa on day 7 and 27.2 MPa on day 28, while the mix with 10% POFA and 30% cockle shells showed the lowest water absorption at 8.17% and initial absorption rate at 13.40 g/min/193.55 cm² on day 28. In conclusion, POFA and cockle shell waste are promising materials for sustainable brick production.