bluuebunny/crossref_metadata_2025_split huggingface dataset:
Accurate channel estimation of on-grid partially coherent compressive phase retrieval for mmWave massive MIMO systems
Authors: Varadharajan Baranidharan , Maruthu Surendar 
Published: January 2025

Abstract
Channel estimation of sparse signal is a challenging task for millimeter-wave massive multi-input multi-output systems. Due to the hardware imperfections and use of large carrier frequency oscillator in hybrid precoding architectures leads to random phase drifts in the received pilots. Channel estimation with random phase drifts exploits partial coherence, where pilots share phase distortion within a frame but differ across different frames. To achieve the reliable and efficient communication, the support vector initialization needs to be optimized effectively. In this article, the singular value decomposition-based on-grid partially coherent compressive phase retrieval (SVD-PC-CPR) algorithm is proposed. This algorithm optimizes the initial support vector by finding the best dimensional subspace of the k sparsity elements by forming the singular vectors. The channel vectors are estimated by applying the gradient descent method through iterative refinements. This algorithm utilizes SVD for identifying the dominant paths from the phases of the measurements by selecting basis vectors. Based on the simulation results, the proposed algorithm achieves better normalized mean squared error, a multi-user sum-rate gain of 19 bits/s/Hz, and a 48 % improvement in estimation accuracy over the conventional PC-CPR algorithm at 20 dB signal-to-noise ratio.
Categorizing Hospitals by Neonatal and Pediatric Diagnoses Treated
Authors: McDaniel Corrie E. , Richardson Troy , Gay James C. , Berry Jay G. , Hall Matt 
Published: January 2025

BACKGROUND
Traditional classification of children’s and nonchildren’s hospitals is based on physical structure and branding. We grouped hospitals with the most similar types of pediatric patients.

METHODS
Retrospective analysis of 2.8 million hospitalizations in 3993 hospitals for patients 0 to 20 years in the 2019 Kids’ Inpatient Database. After stratifying low-volume hospitals (greater than 100 annual admissions), we grouped the remaining hospitals using K-means clustering by case-mix of neonatal services and pediatric diagnosis diversity (DD).

RESULTS
Clustering distinguished 6 hospital groups. Group 1 (n = 1665 [1.6% of hospitalizations]) represented low pediatric volume hospitals (13 annual pediatric hospitalizations [IQR 3–82]). Group 2 (n = 118 hospitals [1.1% of hospitalizations]) provided no neonatal care, had low DD (12 [IQR 4–34]), and had a median age of 17 years. Group 3 (n = 1156 [19.7% of hospitalizations]) hospitals provided low-severity neonatal care with low DD (13 [IQR 7–19). Group 4 (n = 674 hospitals, [24.0% of hospitalizations]) provided moderate-severity neonatal care (2.2 [ IQR 2.1–2.4]) and increased DD (24 [ IQR 6–34]). Group 5 (n = 238 hospitals [20.5% of hospitalizations]) had a similar severity of neonatal care as group 4 (2.3 [IQR 2.1–2.5]), but 2.7 times greater DD (64 [IQR 55–77]). Group 6 (n = 142 hospitals [33.0% of hospitalizations]) had the highest-severity neonatal care (2.6 [IQR 2.3–3.1]) and the greatest DD (127 [113–140]).

CONCLUSION
Children receive inpatient care across 6 groups of hospitals, distinguished by neonatal case-mix and DD. Future studies should investigate the utility of these groups for peer comparisons with health care use and outcomes.
Photocatalytic decomposition of aflatoxins and deoxynivalenol in barley steeping for beer production
Authors: Ngoc Nguyen Thi Thanh , Huyen Nguyen Thi Khanh , Anh Nguyen Mai , Matsuzawa Sadao , Duy Nguyen Thanh , Anh Dang Phan , Chau Ngo Bang , Dat Nguyen Tien , Anh Hoang Le Tuan , Trung Nguyen Quang , Minh Truong Ngoc 
Published: January 2025

AbstractAflatoxins (AFs) and deoxynivalenol (DON), common mycotoxins in cereals, pose contamination risks in beer production, often persisting from raw barley into final products. This study investigates the transfer and decomposition of AFs and DON during the barley steeping stage of malting. Barley spiked with AFs and DON was steeped, and mycotoxin concentrations were analyzed in both the barley residue and the resulting wastewater. Results indicated that AF and DON transfer into wastewater was influenced by water solubility, though concentrations remained below solubility limits. AFs and DON residues were also detected in the steeped barley. Decomposition studies showed that while AFs were partially degraded by UV light, DON required photocatalysis for effective degradation. However, matrix components in wastewater decreased the efficiency of DON decomposition, suggesting that preliminary removal of organic components from wastewater could enhance photocatalytic detoxification. These findings provide insight into mycotoxin management strategies for brewing wastewater, emphasizing the need for targeted pretreatment to improve degradation efficiency.
Optimizing Kohonen Classification of Mixed Data with Partial Distance and Referent Vector Initialization
Authors: Touarsi Mouad , Gretete Driss , Elouadi Abdelmajid 
Published: January 2025

The success of neural network models in clustering problems is highly dependent on the quality and diversity of the data used. Self-organizing maps (SOM), a semi-supervised data learning tool introduced by Kohonen in the 1980s, have been widely used in various fields such as signal and text recognition, industrial data analysis, speech and image recognition, etc. SOM's competitive learning clustering method, where each node specializes in a specific subset of data, has proven to be a powerful technique.
In this paper, we propose a new SOM variant suitable for handling numerical, interval, and categorical attributes simultaneously. Instead of random initialization of weights, we utilize the ASAICC algorithm to select initial referent vectors.
Furthermore, we suggest representing one cluster using multiple referent vectors at once. The effectiveness of the proposed Kohonen variant is evaluated using well-known benchmark datasets, and the results are reported using reliable performance metrics. The simulation of the new algorithm is conducted using the R language, and the obtained results demonstrate the superiority of the proposed approach.
Isolated Tuberculous Osteomyelitis of Calcaneus in an Immune-Competent Adult Patient With Literature Review
Authors: Wadhawan Akhil , Mandal Mainak , Gupta Swati , Nischal Neeraj , Arora Sumit 
Published: January 2025

Case:
We present a case of isolated tuberculous osteomyelitis of the calcaneus in an immune-competent adult patient with a 5-year follow-up. The diagnosis was established by core needle aspiration and biopsy. He was treated with antituberculous chemotherapy and immobilization. The lesion healed with collapse of the calcaneal tuberosity that clinically resulted in shortening and heel valgus. A literature review is also presented.

Conclusion:
Isolated tuberculous osteomyelitis of the calcaneus in an immune-competent adult patient is rare. It may pose diagnostic dilemma, and orthopaedist should work through the differential diagnosis.
Radiographic Subluxation Following Total Hip Arthroplasty in Flexed-Seated Position
Authors: Kim Youngwoo , Tokuyasu Hiroyuki , Vergari Claudio , Takemoto Mitsuru 
Published: January 2025

Case:
We present 3 cases demonstrating radiographic posterior subluxation in lateral functional radiographs taken in the flexed-seated position. Two of the patients were asymptomatic, and 2 showed the posterior translation of the femoral head, which is almost a dislocation, with spontaneous reduction. The subluxation can occur not only in patients after lumbar fusion surgery but also in patients with relatively normal lumbar spine due to excessive hip flexion.

Conclusion:
Functional lateral radiographic assessment in the flexed-seated position may be useful in detecting asymptomatic subluxation and identifying patients at high risk of dislocation after THA.
Joint inversion of apparent resistivity and frequency domain induced polarization data due to anomalous body ahead of the tunnel face
Authors: Pak Un-Gyong , Ri Il-Gyong , Jon Gwang-Chol , Han Sung-Jin , Ri Song-Hyok 
Published: January 2025

Abstract

It is one of the important problems to predict the geologic bodies ahead of the tunnel face not only for mining in the coal mines and the mines but also for the geotechnical tunnel construction related with infrastructure construction. We have developed a method of joint inversion of apparent resistivity and frequency domain induced polarization (IP) data using pole-diploe array to find parameters of geologic body which exists ahead of the tunnel face on the basis of plate and sphere model. Firstly, by synthetically analyzing apparent resistivity and Percent Frequency Effect (PFE) due to the plate and sphere ahead of the tunnel, we determined numbers of terms of infinite series in formulas of forward modeling to use for joint inversion of apparent resistivity and frequency domain IP data in the tunnel. And two methods are proposed to estimate existence of geologic body ahead of the tunnel face. One of them is to use the extreme of apparent resistivity curve and another one is to use inverted resistivity and PFE models. Secondly, we described the method of joint inversion of apparent resistivity and IP data which applies logarithmic barrier method to the algorithm of inversion. Through synthetic data experiments, we assessed not only the reliability and accuracy of the method but also the effects of the number of current electrodes and ratio between length of the survey line and the distance from the tunnel face to the anomalous body on accuracy of the method. Finally a field example is given.
Application of Wings Interferential Patterns (WIPs) and Deep Learning (DL) to classify some Culex. spp (Culicidae) of medical or veterinary importance
Authors: Cannet Arnaud , Simon-Chane Camille , Histace Aymeric , Akhoundi Mohammad , Romain Olivier , Jacob Pierre , Sereno Darian , Souchaud Marc , Bousses Philippe , Sereno Denis 
Published: January 2025

Abstract

In this paper, we test the possibility of using Wing Interference Patterns (WIPs) and deep learning (DL) for the identification of Culex mosquitoes species to evaluate the extent to which a generic method could be developed for surveying Dipteran insects of major importance to human health. Previous applications of WIPs and DL have successfully demonstrated their utility in identifying Anopheles, Aedes, sandflies, and tsetse flies, providing the rationale for extending this approach to Culex. Accurate identification of these mosquitoes is crucial for vector-borne disease control, yet traditional methods remain labor-intensive and are often hindered by cryptic species or damaged samples. To address these challenges, we applied WIPs, generated by thin-film interference on wing membranes, in combination with convolutional neural networks (CNNs) for species classification. Our results achieved over 99% genus-level accuracy and up to 100% species-level accuracy. Nonetheless, challenges with underrepresented species emphasize the need for larger datasets and complementary techniques such as molecular barcoding. This study highlights the potential of WIPs and DL to enhance mosquito identification and contribute to scalable tools for broader surveys of health-relevant Dipteran insects.
Knowledge, Perception and Preventive Practices of Lassa Fever Among Mothers of Under- Five Children in an Endemic Community in Edo State, Nigeria
Authors: Saka Sulymon A. , Ojo Dele O. , Mezu Nneoma M. , Uzuegbu Christian O. , Ighodaro Osazuwa , Illoh Oluchi O. , Emekolom Obiajulum N. , Akpa Offiong A. , Obiora Ezinne A. , Muogbo Amara P. 
Published: January 2025

Abstract

Background
Lassa fever is an acute viral hemorrhagic disease endemic to West Africa, particularly Nigeria. Despite efforts to control its spread, gaps in knowledge and preventive behaviors remain, particularly among vulnerable groups such as mothers of young children. This study assessed the perception, knowledge, and preventive practices regarding Lassa fever among mothers of under-five children in Esan Central Local Government Area, Edo State, Nigeria.
Methods
A descriptive cross-sectional study was conducted among 130 mothers with children under five using a structured interviewer-administered questionnaire. Participants were selected using a multi-stage sampling technique. Data were analyzed using SPSS version 30, employing descriptive and inferential statistics to assess the associations between sociodemographic factors, knowledge, and preventive practices.
Results
All participants (100%) had heard of Lassa fever, with health workers being the most common source of information (55.4%). Most mothers (72%) demonstrated good knowledge of Lassa fever symptoms, whereas 67% reported good preventive practices, such as handwashing (71.5%) and maintaining proper drainage systems (70.8%). Ethnicity and education were significantly associated with knowledge of Lassa fever (p < 0.001), while marital status and parity were significantly associated with preventive practices (p < 0.05).
Conclusion
This study revealed high awareness and knowledge of Lassa fever among mothers, yet preventive practices were suboptimal. Public health interventions should focus on improving preventive behaviours through targeted health education, particularly in underserved communities, to reduce the disease burden in endemic regions.
Prophage induction stimulates ribosomal RNA operon recombination and facilitates genome mobility
Authors: Bowring Janine , Ingmer Hanne 
Published: January 2025

Abstract

Bacterial genomes contain multiple ribosomal RNA operons that by homologous recombination facilitate genome rearrangements. Here we show that a Staphylococcus aureus temperate bacteriophage stimulates homologous recombination between the rRNA operons flanking the prophage and promotes a novel route of horizontal gene transfer we term rrn transduction. By PCR, sequencing of phage-packaged bacterial DNA, and phage transduction assays, we show that upon induction of the prophage, large circles of DNA formed by rRNA operon recombination are packaged and transduced by the phage. This phenomenon is likely to be widely occurring, with prophage-linked rRNA operon recombination also shown here in Salmonella. Our results challenge the concepts of mobile and core genomes and establish rrn transduction as a new form of gene transfer involving rRNA operons.
Hydrogel Lego based on rehydrated laminate assembly for standardized production and customized integration of multifunctional hydrogel sensors
Authors: Wu Shuyi , Xu Xiaowei , Hu Lei , Pang Jie 
Published: January 2025

Abstract

Hydrogel sensors have immense potential for application in fields such as flexible wearable devices. However, hydrogel sensors still face challenges related to process standardization, convenience of long-term storage, customization for diverse application scenarios, and ease of multifunctional integration. In this study, a strategy for the rapid rehydration of prefabricated multifunctional gel dry films and modular assembly to form multifunctional multilayer hydrogel devices is reported. First, the developed biomass polysaccharide encapsulation composite, konjac glucomannan/sodium alginate/dopamine (KSD), was utilized to encapsulate various functional materials separately and then dried to form prefabricated parts of various functional hydrogel dry films. In the application of the device, through the gel rehydration and water-triggered hydrogel interlayer metal–ligand chelation bonding, the personalized multifunctional laminated hydrogel devices can be assembled quickly and conveniently according to the application requirements. The binding between the hydrogel layers occurs through the formation of metal–ligand bonds between the calcium ions in the solution and the carboxylic acid groups in the sodium alginate, which results in an interlayer bond of 0.57 MPa after only 1.5 min. Moreover, a KSD-encapsulated anisotropic flexible thermoplastic urethane/MXene (TPU/MXene) conductive gel dry film was constructed, and multilayered anisotropic hydrogel flexible sensors were assembled by the rapid rehydration and lamination of the gel dry film. The multilayer composite hydrogel can accurately recognize complex deformations such as curved surface motion through multiple signals, which is difficult to realize by ordinary sensors. Moreover, the bacteriostatic functional layer can be conveniently integrated on top of the flexible conductive sensing layer based on the modular assembly strategy. The pH-responsive bacteriostatic membrane ZIF-8/flavanone/KSD prepared using the microfluidic and mosaic encapsulation methods displays satisfactory biocompatibility and bacteriostatic properties. The strategy of rapid rehydration and lamination of prefabricated parts of several functional dry gels for customized modular assembly proposed in this paper will enable the standardized batch processing of prefabricated parts for flexible hydrogel sensors and the rapid integration of multifunctional hydrogel sensors in accordance with a variety of application scenarios and requirements.
Structure of the intact C2S2-type Photosystem II-LHCII supercomplex from Arabidopsis thaliana at 2.44 Å
Authors: Messinger Johannes , Forsman Jack , Graca André , Aydin Abuzer , Hall Michael , Hussein Rana , Schröder Wolfgang 
Published: January 2025

Abstract

Photosystem II (PSII) is a large membrane-bound protein complex that is essential for oxygenic photosynthesis in plants and cyanobacteria. While there are several high-resolution structures of PS II from cyanobacteria, very few PS II structures have been reported from higher plants. Here, we present the first high-resolution structure of an intact and active PS II from Arabidopsis thaliana at a resolution of 2.44 Å, which to date represents the highest resolution structure of PS II from any land plant. The improved resolution allowed for the modeling of cofactors which have not been previously seen in higher plant PS II structures. Importantly, we were able to identify many water molecules within the PS II structure, including waters around the water-splitting manganese cluster, in the bottleneck regions of the water/proton channels, and near the non-heme iron on the acceptor side. Structural differences between cyanobacterial and plant PS II are discussed.
Impact of Prefecture-level Intensive Care Unit Congestion on Mortality in Severe COVID- 19 Patients: A Retrospective Observational Study in Japan
Authors: Iwasaki Yudai , Ogura Takayuki , Ohbe Hiroyuki , Hashimoto Satoru , Kushimoto Shigeki , Ohshimo Shinichiro , Shime Nobuaki , Takeda Shinhiro 
Published: January 2025

Abstract

Background
The COVID-19 pandemic has placed unprecedented pressure on global healthcare systems, severely affecting the intensive care unit (ICU) capacity. Therefore, this study explored the association between prefecture-level ICU congestion and COVID-19 mortality in each prefecture of Japan.
Methods
This retrospective study analyzed data from the CRoss Icu Searchable Information System, covering all patients with COVID-19 who required mechanical ventilation or extracorporeal membrane oxygenation between January 1, 2020, and March 31, 2023. Prefecture-level ICU congestion was calculated as the total ventilator days over 2 weeks for severely ill patients with COVID-19, divided by the maximum potential ventilator days in the prefecture. Prefecture-level ICU congestion in each region was visualized by plotting time-series graphs capturing the temporal progression of congestion levels. A mixed-effects logistic regression model was fitted to evaluate the association between prefecture-level ICU congestion and mortality.
Results
A total number of 10,046 patients were included in this study, and the mortality rate was 23.2%. Congestion levels varied by time and prefecture, ranging from 0 to over 1.5, indicating a strain beyond capacity. Median congestion level (interquartile range [IQR]) at admission was 0.3 (0.1, 0.6), and increased congestion level was statistically associated with increased mortality (odds ratio: 1.14; 95% confidential interval: 1.08–1.21).
Conclusions
Increased prefecture-level ICU congestion may be associated with increased COVID-19 mortality, warranting further investigation.
Sublethal effects of Kane mite® on life table of Tetranychus urticae (Acari: Tetranychidae) and its predators, Phytoseiulus persimilis and Amblyseius swirskii (Acari: Phytoseiiidae)
Authors: Rezaei Elham , Aramideh Shahram , Mirfakhraie Shahram , Forouzan Maryam 
Published: January 2025

Abstract

An integrated pest management (IPM) approach that combines both chemical and biological methods offers the most effective and sustainable solution. The two-spotted spider mite (TSSM), Tetranychus urticae Koch (Acari: Tetranychidae) is a serious pest of many agricultural crops. In controlling the TSSM, the simultaneous use of natural enemies along with a low-risk acaricide on natural enemies and effective on the TSSM is very important. In this study, sublethal effects of Kane mite® including LC10, LC20, LC30 concentrations were evaluated on biological parameters of TSSM and its two predators, Phytoseiulus persimilis and Amblyseius swirskii Athias-Henriot (Acari: Phytoseiidae). The effects of different sublethal concentration on TSSM indicated significant reduction in female’s duration of maturation, oviposition period, and total fecundity by increasing concentration of Kane mite. The highest and lowest values of the net reproductive rate (R0) on TSSM were obtained in control and LC30 concentration, respectively. The maximum value of intrinsic rate of increase (r) on TSSM was obtained in control treatment. Also, the highest and lowest rate of growth and development were observed in the control treatment and LC30 concentration, respectively. Therefore, the results suggested that Kane mite effectively controls of TSSM. It could be concluded that sublethal concentrations of Kane mite cannot significantly reduce population growth and life table parameters zof two predators. The results demonstrated that Kane mite with predators could be incorporated in integrated management programs of TSSM.
Copper-Cobalt Bimetallic nanoparticles supported on Magnetic MOF Derived N-doped carbon as highly efficient Catalysts for the C–N coupling and one-pot multicomponent reaction
Authors: Ahmadi Arezoo , Alinezhad Heshmatollah , Sarrafi Yaghoub 
Published: January 2025

Abstract

Magnetic metal-organic frameworks (MOFs) are promising precursors for generating diverse carbon-based nanostructures due to their facile recovery and separation, as well as their robust mechanical and thermal properties. In this study, a novel Cu-Co bimetallic nanoparticle supported on magnetic MOF derived N-doped carbon was successfully synthesized. The copper ions preloaded within the pores of the Co MOF provide abundant exposed Cu active sites. The pyrolysis treatment results in a hierarchical porous structure with a high surface area, contributing to mass transfer and enhancing reactant diffusion to the active sites. The developed catalyst was characterized extensively using FT-IR, XRD, BET, BJH, EDX, TGA, VSM, FE-SEM, ICP, and XPS techniques. The catalyst exhibited exceptional catalytic activity for C-N coupling and one-pot multicomponent reactions. This superior performance can be attributed to the synergistic effect between copper nanoparticles incorporated in the composite, as well as the highly porous N-doped carbon structure. The catalyst demonstrated remarkable stability, maintaining its activity without significant degradation after five consecutive reaction cycles. This innovative approach, capitalizing on the reinforcing interplay of structural and compositional advantages, opens up opportunities for the rational design and synthesis of highly efficient bimetallic nanoparticle catalysts supported on magnetic MOF-derived N-doped carbon.