bluuebunny/crossref_metadata_2025_split huggingface dataset:
Multi-line laser 3D reconstruction method based on spatial quadric surface and geometric estimation
Authors: huang Huiming , Liu Guihua , Deng Lei , Song Tao , Qin Fuping 
Published: June 2024

Abstract

The traditional multi-line laser 3D reconstruction is based on binocular epipolar constraints and the equation of the laser optical plane. Firstly, matching points are identified based on the epipolar constraints. Then, the correct matching points are selected based on the optical plane equation of the multi-line laser. Finally, 3D reconstruction is performed using the selected matching points. In actual production processes involving multi-line lasers, noticeable distortion occurs due to the projection of Diffractive Optical Elements (DOE) at a large angle. This results in curved laser light planes and curved reflections on the measured objects. Under such circumstances, efficiently screening matching points using the traditional method based on the laser plane equation becomes challenging. Additionally, inherent noise in multi-line laser systems introduces errors in extracted laser center coordinates, making it impossible to directly obtain high-precision 3D data solely from matching points based on epipolar line constraints. To address these issues, this paper proposes a method that utilizes spatial quadric surfaces and geometric estimation for completing multi-line laser 3D reconstructions. By analyzing the distortion principle of DOE and the positional relationship after optical diffraction, the multi-line laser manifests as a quadric surface on the optical output plane. Consequently, by calibrating the equations of the quadric surface and applying binocular polar constraints, suitable matching points for the multi-line laser can be chosen. Once an accurate matching point is identified, a minimum geometric distance estimation can be established based on the distance constraint between the point and its corresponding epipolar line. This distance represents the separation between the left and right camera's laser center points and their respective epipolar lines. Utilizing this estimate of the minimum geometric distance, a refined calculation can be performed to better satisfy epipolar constraints and obtain new matching points. Ultimately, utilizing these new matching points enables the completion of 3D reconstruction for multi-line lasers. In comparison with methods relying on spatial plane and epipolar constraints, our algorithm exhibits a superior degree of matchability and accuracy.
Investigation of risk factors for external root resorption of the second molars associated with impacted third molars and development of a prediction model：A multicenter cross- sectional study
Authors: Kou Zhengwei , Zhang Wuyang , Li Chen , Zhang Yu , Song Zijian , Zou Yuzhen , Wang Haijing , Liu Zhenghua , Huerman Bahetibieke , Deng Tiange , Hu Kaijin , Xue Yang , Ji Ping 
Published: June 2024

Abstract

Objectives
The aim of the present study was to investigate the risk factors for external root resorption (ERR) of the second molars (M2) associated with impacted third molars (M3) and to develop a prediction model for clinical assessing the risk of ERR based on the individual characteristics of M3.
Materials and methods
A total of 798 patients with 2156 impacted third molars were collected from three centers between December 1, 2018 and December 15, 2018. ERR was identified by cone beam computed tomography (CBCT)examinations. The effects of different risk factors on the presence/absence of ERR and its severity were analyzed using Chi-Square or Fisher test. Multivariate logistic regressive analysis with stepwise variable selection methods was performed to identify factors which were significant predictors for ERR and its severity. Subsequently, a prediction model was developed, and the model performance was validated internally and externally.
Results
The overall incidence of ERR of second molars was found to be 16.05%. Risk factors of ERR included age, position (upper or lower jaw), impact depth, impact type, contact position, M2 situation in opposing jaw and root number of M3. The prediction model was established using six factors including position, impact type, impact depth (including PG:A-B-C and PG:I-II-III),contact position and root number of M2. In terms of internal validation, the model achieved an AUC of 0.959 and a prediction accuracy of 0.896 (95% CI, 0.867, 0.921). The Kappa value was 0.572, with a sensitivity of 0.956 and a specificity of 0.571. Additionally, for external validation, the model demonstrated an AUC of 0.975 and a prediction accuracy of 0.910 (95% CI, 0.870–0.941). The Kappa value was calculated as 0.653, with a sensitivity of 0.941 and a specificity of 0.732.
Conclusion
A risk prediction model for ERR was established in the present study. Position (upper or lower jaw), impact type, impact depth, contact position and root number of M2 were identified as influencing variables which were significant predictors in the development of this predictive model. The prediction model showed great discrimination and calibration.
Clinical relevance:
This prediction model has the potential to aid dentists and patients in making clinical decisions regarding the necessity of M3 extraction.
The impact mechanism of high-speed rail accessibility on urban expansion in China: An analysis based on the mediating effect model
Authors: He Dan , Chen Zixuan , Zhou Jing , Li Qimeng , Qin Zihang , Wang Jiaxin 
Published: June 2024

Abstract

As a new means of high-speed transportation, high-speed rail(HSR) has an important impact on the scale of urban land use in Chinese cities. Exploring the impact mechanism of HSR accessibility on urban expansion is of certain significance for urban land use planning and management in the era of HSR network development. This paper constructs a national HSR network, interprets multi-dimensional accessibility from the HSR network with the help of complex network methods, and uses the mediating effect model to explore the impact mechanism of HSR accessibility on urban expansion. The results show that (1) Closeness centrality, betweenness centrality, degree, weighted degree and the number of HSR frequency stopped all promote urban expansion by stimulating investment in real estate development, total retail sales of consumer goods, employment density and the proportion of added value of the tertiary industry, and inhibit urban expansion by restraining the proportion of added value of the secondary industry. (2) When the total retail sales of consumer goods is used as the mediating variable, the promoting effect of betweenness centrality, degree, weighted degree and the number of HSR frequency stopped on urban expansion is the strongest through this mediating variable. When the proportion of added value of the tertiary industry is used as the mediating variable, the promoting effect of betweenness centrality, degree and weighted degree on urban expansion through this mediating variable is the weakest.
Overcoming Data Scarcity in Load Forecasting: A Transfer Learning Approach for Office Buildings
Authors: Carmo Felipe do , Fonseca Wellington , Soares Tiago 
Published: June 2024

Abstract

Load forecasting is an asset for sustainable building energy management, as accurate predictions enable efficient energy consumption and contribute to decarbonisation efforts. However, data-driven models are often limited by dataset length and quality. This study investigates the effectiveness of transfer learning (TL) for load forecasting in office buildings, with the aim of addressing data scarcity issues and improving forecasting accuracy. The case study consists in a group of eight virtual buildings (VB) located in Porto, Portugal. VB A2 serves as pre-trained base model to transfer knowledge to the remaining VBs, which are analysed in varying degrees of data availability. Our findings indicate that TL can significantly reduce training time, for up to 87%, while maintaining accuracy levels comparable to those of models trained with full dataset, and exhibiting superior performance when compared to models trained with scarce data, with average RMSE reduction of 42.76%.
The evolution, variation and expression patterns of the Annexin gene family in the maize pan-genome
Authors: Liu Xin , Zhang Minghu , Zhao Xin , Shen Mang , Feng Ruizhang , Wei Qin 
Published: June 2024

Abstract

Annexins (Anns) are a family of evolutionarily conserved, calcium-dependent, phospholipid-binding proteins that play critical roles in plant growth, development, and stress responses. Utilizing the pan-genome of 26 high-quality maize genomes, we identified 12 Ann genes, comprising 9 core genes (present in all 26 lines) and 3 near-core genes (present in 24–25 lines). This highlights the limitations of studying ZmAnn genes based on a single reference genome. Evaluating the Ka/Ks values of Ann genes in 26 varieties revealed that ZmAnn10 was under positive selection in certain varieties, while the remaining genes had Ka/Ks values less than 1, indicating purifying selection. Phylogenetic analysis divided ZmAnn proteins into six groups, with group six containing only ZmAnn12. Structural variation in certain varieties altered the conserved domains, generating many atypical genes. Transcriptome analysis showed that different Ann members have distinct expression patterns in various tissues and under different abiotic and biotic stress treatments. Weighted gene co-expression network analysis of transcriptome data from various maize tissues under cold stress identified four Ann genes (ZmAnn2, ZmAnn6, ZmAnn7, ZmAnn9) involved in co-expression modules. Overall, this study utilized high-quality maize pangenomes to perform a bioinformatic analysis of ZmAnn genes, providing a foundation for further research on ZmAnn genes.
Quantifying Inequality in the Utilization of Healthcare Services Provided by Community-based Health Planning and Services and its Correlates in SelectedUrban Poor Communities in Ghana: An Analytic Cross-Sectional Study, 2023
Authors: Dwomoh Duah , Aryeetey Genevieve Cecilia , Agyabeng Kofi , Nwameme Ada , Wallace Lauren , Agyepong Irene , Nonvignon Justice , Odopey Selase Adjoa , Kumapley Delali , Agbenu Ivy Akushika , Dawkins Bryony , Hicks Joseph , Ebenso Bassey , Ensor Tim , Elsey Helen 
Published: June 2024

Abstract

Background
Community-based Health Planning and Services (CHPS) was initially designed to address the healthcare needs of Ghana's rural communities. However, with urban population growth and the subsequent healthcare demands of the urban poor, the CHPS policy was extended to urban areas. There is a significant gap in our understanding of the wealth-related disparities, correlates, and utilization levels of healthcare services under the urban CHPS. This study is a pioneering effort to fill this gap, aiming to quantify the utilization level, identify correlates, and measure wealth-related inequality in healthcare services provided by the CHPS in poor urban settings.
Method
The survey was conducted in four poor urban communities in the Greater Accra Region of Ghana using a quantitative analytic cross-sectional survey design with multistage cluster sampling, ensuring a representative sample of 3543 respondents (97.9% response rate) in the 2070 households. We used the Erreygers and Wagstaff normalized concentration indices with cluster-robust standard errors to estimate the level of inequalities in service utilization. A negative binomial regression model with a delta-based cluster robust standard error was used to identify correlates of service utilization.
Results
Approximately 25.1% [95% CI: 23.2, 27.1] of respondents in the four urban-poor communities utilized healthcare services provided by community health officers (CHOs) via the urban CHPS concept. The Erreygers normalized concentration index (CI) of 0.129 (p = 0.026) showed that the utilization of healthcare services through the urban CHPS concept is significantly more concentrated among the rich or better-off sample households than among the poor households. The utilization of healthcare services provided by CHOs was 17.5% [95% CI: 14.01, 20.94; p < .001] greater among females than males and 12.0% [95% CI: 6.72, 17.21; p < .001] greater among rich individuals relative to poor individuals. The utilization of healthcare services was 13.3% [95% CI: 8.53, 18.02; p < .001] higher among persons living in slum households than those living in non-slum households.
Conclusion
Healthcare service utilization remains low, and disparities exist between the rich and the poor. These findings underscore the need to implement comprehensive, integrated targeted interventions with key stakeholder engagement to increase service utilization and address disparities in healthcare service utilization in poor urban settings.
‘Air quality is not something that you see with your naked eyes’: Knowledge, attitudes and perceptions about air pollution among stakeholders in the cities of Kampala and Jinja, Uganda
Authors: Huang Hao , Kasaija Peter , Nantanda Rebecca , Okello Gabriel 
Published: June 2024

Abstract

Background: Air pollution is a major health challenge worldwide and has dire implications for economic development and the environment. Understanding the knowledge and perceptions of societal actors is key to designing context-specific strategies. This study aimed to explore the knowledge and perspectives of stakeholders whose roles influenced air quality in Kampala and Jinja cities in Uganda.Method We identified and conducted in-depth semi-structural interviews with stakeholders in both cities about their knowledge, attitudes, and perceptions of air quality, related health outcomes, measures, and collaborations in both cities. The framework method was adopted to analyse the transcripts.Results Respondents include stakeholders such as policymakers, businesses, academia, civil society organisations, and the media. Activities from industries (85%), transport (83%) and municipal waste (56%) were major concerns for stakeholders in both cities. 56% of the respondents in both cities related poor air quality to specific health outcomes such as asthma or lung cancer.
Serum pleiotrophin levels in patients with multiple sclerosis
Authors: Civelek Emre , Yıldız Özlem Kayım , Kablan Demet , Doğan Halef Okan 
Published: June 2024

Abstract

1. Objective:
Multiple sclerosis (MS) is a demyelinating disease of the central nervous system. Emerging evidence indicates that pleiotrophin (PTN) may implicated in MS pathogenesis. However, PTN has been investigated scarcely in MS.
2. Materials and Methods:
We prospectively included 168 consecutive MS patients and 41 controls. The patients were divided into subgroups of relapsing-remitting MS (RRMS, n = 119, 70.8%), primary progressive MS (PPMS, n = 26, 15.5%) and secondary progressive MS (SPMS, n = 22, 13.7%). Disability status assessed using Expanded Disability Status Scale (EDSS), disease duration and disease modifying therapies (DMTs) use were recorded. Serum PTN levels were analyzed using ELISA.
3. Results:
The median (IQR) disease duration was 7 (3–11) years and the median (IQR) EDSS score was 1.5 (1–4) in MS patients. 12 (7.1%) patients were using interferon β-1a, 7 (4.2%) glatiramer acetate, 23 (13.7%) fingolimod, 37 (22%) dimethyl fumarate, 24 (14.3%) teriflunomide, 9 (5.4%) natalizumab, 12 (7.1%) cladribine and 43 (25.6%) ocrelizumab; 1 (0.6%) patient was treatment-naïve. Serum PTN levels of the MS patients were significantly lower than those of the controls (the median, IQR 240.95, 161.00-398.73 ng/ml and 348.40, 211.70-912.55 ng/ml, respectively, p = 0.005). The patients with RRMS and SPMS but not PPMS had significantly lower serum PTN levels than the controls (p = 0.009, p = 0.032 and p = 0.067, respectively). PTN levels were not associated with disability status, disease duration or DMTs use.
4. Conclusion:
Serum PTN levels are lower in patients with RRMS and SPMS than controls. Disease characteristics or DMTs use do not have significant effects on PTN levels.
Graphene Nanoplatelets Inclusion Effects on Mechanical Properties of Hybrid Carbon/Glass Composites
Authors: Erkliğ Ahmet , Bulut Mehmet , R.Al-Ogaidi Bashar 
Published: June 2024

Abstract

The primary aim of this study was to examine the impact of Graphene Nanoparticles (GNPs) on the mechanical and Charpy impact characteristics of carbon fiber/epoxy, glass fiber/epoxy, and their hybrid composite laminates across various laminate configurations. GNPs were uniformly dispersed in the epoxy matrix at different weight fractions of 0.1%, 0.25%, and 0.5%wt. Experimental assessments encompassing flexural, tensile, and Charpy impact evaluations were carried out both with and without the incorporation of GNPs as reinforcing agents in the fabricated specimens. Upon introducing GNPs at a loading level of 0.1 wt.%, the experimental findings demonstrated a notable enhancement in the mechanical and impact properties of the hybrid composite laminates as a result of integrating GNPs into the epoxy matrix. This increase in strength can be ascribed to the development of a strong interfacial bond among the fibers, epoxy, and GNPs.
20 W, 15 ns high-repetition-rate and high-beam- quality MOPA laser by spherical aberration self- compensation at 1342 nm
Authors: Ye Zhibin , Li Xiaoran , Jiang Shu , Wu Fei , Huang Meng , Hu Hanmin , Qi Yunxuan , Liu Bin , Yan Hengfeng 
Published: June 2024

Abstract

A master oscillator power amplifier (MOPA) pulsed laser operating at 1342 nm is demonstrated. It consists of an acousto-optical (A-O) Q-switched oscillator and two-stage Nd:YVO4 power amplifiers. The spherical aberration self-compensation technique is used in the second stage amplifier to obtain high-beam-quality laser output. The maximum average output power of 20.4 W is obtained with the oscillator power of 2.0 W and the total pump light power of 184.08 W, corresponding to an optical-optical efficiency of 11.08%. The repetition rate and pulse width are 100 kHz and 14.8 ns, respectively. The beam quality factor is Mx2=1.45 and My2=1.34. According to our knowledge, this is the maximum output power with a pulse width of ten-nanoseconds level and repetition rate of one-hundred-kilohertz level by an A-O Q-switch at the wavelength of 1342 nm.
Characterization of the family-level Borreliaceae pan-genome and development of an episomal typing protocol
Authors: Socarras Kayla M. , Marino Mary C. , Earl Joshua P. , Ehrlich Rachel L. , Cramer Nicholas A. , Mell Joshua C. , Sen Bhaswati , Ahmed Azad , Marconi Richard T. , Ehrlich Garth D. 
Published: June 2024

Abstract

Background
The Borreliaceae family includes many obligate parasitic bacterial species which are etiologically associated with a myriad of zoonotic borrelioses including Lyme disease and vector-borne relapsing fevers. Infections by the Borreliaceae are difficult to detect by both direct and indirect methods, often leading to delayed and missed diagnoses. Efforts to improve diagnoses center around the development of molecular diagnostics (MDx), but due to deep tissue sequestration of the causative spirochaetes and the lack of persistent bacteremias, even MDx assays suffer from a lack of sensitivity. Additionally, the highly extensive genomic heterogeneity among isolates, even within the same species, contributes to the lack of assay sensitivity as single target assays cannot provide universal coverage. This within-species heterogeneity is partly due to differences in replicon repertoires and genomic structures that have likely arisen to support the complex Borreliaceae lifecycle in which these parasites have to survive in multiple hosts each with unique immune responses.
Results
We constructed a Borreliaceae family-level pangenome and characterized the phylogenetic relationships among the constituent taxa which supports the recent taxonomy of splitting the family into at least two genera. Gene content profiles were created for the majority of the Borreliaceae replicons, providing for the first time their unambiguous molecular typing.
Conclusion
Our characterization of the Borreliaceae pan-genome supports the splitting of the former Borrelia genus into two genera and provides for the phylogenetic placement of several non-species designated isolates. Mining this family-level pangenome will enable precision diagnostics corresponding to gene content-driven clinical outcomes while also providing targets for interventions.
Global Research Status and Trends on Retinal Vein Occlusion-A Bibliometric Analysis
Authors: Su Yiyan , Hu Zeqi , Feng Yanbing , Jiang Ninghua , Weng Wenqing 
Published: June 2024

Abstract

AIM
This study examines the current state of publications on retinal vein occlusion (RVO) to explore global research trends and hotspots.
METHODS
A bibliometric analysis was conducted based on the Web of Science Core Collection and CNKI databases. Tools such as CiteSpace 6.1.6, VOSviewer 1.6.20.0, R-software v4.3.3, Bibliometrics Online Analysis Platform, and Microsoft Excel were utilized for creating maps and visualizing the annual publication volume, distribution by country, author productivity, publishing journals, cited references, and keywords in the field.
RESULTS
A total of 2764 papers were retrieved from WOS from 2014 to 2023, with the United States leading in publication volume. Tsujikawa, A. has made the most significant contributions to the field. "Retina-the Journal of Retinal and Vitreous Diseases" is the journal with the highest number of publications on RVO research. Key topics identified in the WOS include: (1) risk factors and high-risk populations for RVO; (2) conventional treatment methods for RVO; (3) the application of Optical Coherence Tomography (OCT) in the treatment of RVO; and (4) efficacy and safety of treatments for RVO. Additionally, 1353 papers were identified in the CNKI database, primarily published in journals focusing on clinical ophthalmology.
CONCLUSION
Based on recent research trends, the study suggests two effective recommendations for the prevention of RVO.
Understanding the Adhesion Performance of Glued Laminated Timber Manufactured with Australian Softwood and High-Density Hardwood Species
Authors: Faircloth A. , Gilbert B. P. , Kumar C. , Leggate W. , McGavin R. L. 
Published: June 2024

Abstract

To be commercialised, glued laminated timber must typically conform to a strict bond integrity assessment. While the associated testing protocols vary slightly from country to country, the general method consists of a series of swelling (water immersion) and shrinkage (drying) cycles. The approach is independent of the species and adhesive type. Those cycles strain the gluelines to a level depending on the species’ moisture uptake, timber dimensional movement and modulus of elasticity, as well as adhesive layer elasticity. High density and high modulus of elasticity materials frequently fail within the glueline regions rather than within the timber and therefore fail the bond integrity assessment. To better understand the mechanisms that lead to glueline failure, glulam samples were manufactured using three prominent Australian commercial timbers of various densities (Radiata pine – Pinus radiata, Southern pine – Pinus caribaea/Pinus elliottii, and Spotted gum – Corymbia citriodora) and two structural adhesive types (resorcinol formaldehyde and polyurethane). Using advanced measurement techniques (digital image correlation and strain gauges), the response of the different species and adhesive types to moisture swelling and shrinkage, as well as times at which glueline separation occurs, were captured. A relationship was observed between moisture uptake and delamination percentages with spotted gum producing significantly higher levels of delamination and significantly lower moisture uptake values, compared to both radiata pine and southern. While the polyurethane glued samples on average produced higher levels of delamination, the digital image correlation data indicates that the time at which this delamination occurs is later than the samples glued with resorcinol formaldehyde. No relationship exists between the block shear strength, wood fibre amounts, and delamination percentages.