bluuebunny/crossref_metadata_2025_split huggingface dataset:
A dataset for monitoring agricultural drought in Europe
Authors: Fioravanti Guido , Toreti Andrea , Cammalleri Carmelo , Muñoz Carolina Arias , Bavera Davide , De Jager Alfred , Hrast Essenfelder Arthur , Di Ciollo Chiara , Masante Dario , Magni Diego , Navarro Juan Acosta , Mazzesch Marco , Maetens Willem 
Published: February 2025

Abstract
This paper introduces the Combined Drought Indicator dataset, a collection of raster maps generated by the Copernicus European Drought Observatory for monitoring agricultural drought in Europe. Computationally, the CDI involves three indicators: the Standardized Precipitation Index, the Soil Moisture Anomaly and the Fraction of the Photosyntetically Active Radiation anomaly. These are complemented by the use of crop and snow masks. The CDI dataset has a spatial resolution of 1/24 decimal degrees (∼5 km), a temporal resolution of 10 days and is available from 2012 onward. As drought effects are variegated both in space and time, the CDI provides an effective instrument for assessing the different stages of propagation of agricultural drought and their spatial extent. Furthermore, the CDI maps provide relevant information for those private and public actors (water resource agencies, farmers, land managers and so on) involved both in drought preparedness and planning to mitigate drought impacts. Users can access and download the dataset from the Copernicus European Drought Observatory web portal, where an online mapviewer and clickable maps facilitate its interactive exploration.
Investigating practices and difficulties in communicating with patients about COVID-19 vaccination among healthcare workers in Italy
Authors: Della Polla Giorgia , Miraglia del Giudice Grazia , Cirillo Raffaele , Sansone Vincenza , Napolitano Francesco 
Published: February 2025

Abstract
The aims of this cross-sectional study were to understand the healthcare workers’ (HCWs) practices and difficulties in communicating with patients about COVID-19 vaccinations, to investigate the factors associated, and to identify targets to improve the efficacy of the COVID-19 immunization strategy. Questionnaires were administered between November 2021 and March 2022 in three immunization centers in Italy. More than half of HCWs (56.8%) reported to always recommend COVID-19 vaccination to their patients, and the recommendations for other vaccinations were provided by 50.4% of the participants. Physicians/medical residents, males, and those who recommended other vaccinations to their patients were more likely to always recommend COVID-19 vaccination. The participants’ perception of difficulties in communicating with patients about COVID-19 vaccination and the impact of sources of information on patients’ knowledge about vaccination, explored using a ten-point Likert-type scale, resulted in a mean value of 6.3 and 7.9, respectively. A higher level of perception regarding difficulties in communicating with patients was more likely to be found among nurses/midwives and younger HCWs. It is important to reduce HCWs’ perceived gap regarding difficulties in communicating with patients, supporting them through health policy to recommend vaccinations, and engaging them in increasing uptake rates.
A novel approach to graph distinction through GENEOs and permutants
Authors: Bocchi Giovanni , Ferri Massimo , Frosini Patrizio 
Published: February 2025

Abstract
The theory of Group Equivariant Non-Expansive Operators (GENEOs) was initially developed in Topological Data Analysis for the geometric approximation of data observers, including their invariances and symmetries. This paper departs from that line of research and explores the use of GENEOs for distinguishing r-regular graphs up to isomorphisms. In doing so, we aim to test the capabilities and flexibility of these operators. Our experiments show that GENEOs offer a good compromise between efficiency and computational cost in comparing r-regular graphs, while their actions on data are easily interpretable. This supports the idea that GENEOs could be a general-purpose approach to discriminative problems in Machine Learning when some structural information about data and observers is explicitly given.
Cause-specific mortality after spousal bereavement in a Danish register-based cohort
Authors: Sloth Mathilde Marie Brünnich , Hruza Johannes , Mortensen Laust Hvas , Bhatt Samir , Katsiferis Alexandros 
Published: February 2025

Abstract
Spousal bereavement is associated with increased all-cause mortality, but less is known for cause-specific mortality. We estimated the average effect of bereavement on cause-specific mortality. Furthermore, we developed and evaluated the performance of prediction models estimating individualized mortality risks. This matched cohort study leveraged nationwide registry data on 223,500 married Danish individuals aged ≥ 65 years. Individuals were followed from bereavement date until death, emigration, or 3-year end of follow-up. G-estimation was used to estimate the average effect of bereavement on cause-specific mortality. Risk prediction models were developed and internally validated using logistic regression and Extreme Gradient Boosting utilizing information on sociodemographic factors and healthcare expenditures prior to bereavement. Among males, bereavement was associated with increased 3-year mortality from cardiovascular disease (CVD) (Risk Difference: 8 deaths/1000 individuals [95% confidence intervals (CI) 3;13]), digestive diseases (3 [95% CI 1;5]), psychiatric diseases/suicide (3 [95% CI 1;5]), and respiratory diseases (4 [95% CI 1;8]) and decreased 3-year mortality for dying from dementia/Parkinson’s disease (-4 [95% CI -6;-2]). Among females, bereavement was only associated with increased 3-year mortality from CVD (5 [95% CI 3;7 ]) and from psychiatric diseases/suicide (1 [95% CI 1;2]). The prediction models developed using sociodemographic information and healthcare expenditures showed limited accuracy in identifying cause-specific mortality risk. On average, spousal bereavement slightly elevated the risk for most causes of death for males and less so for females. Despite incorporating comprehensive healthcare and sociodemographic data, accurately predicting individual cause-specific mortality remains challenging.
The impact of threshing unit structure and parameters on enhancing rice threshing performance
Authors: Abdeen Mohamed Anwer , Wu Weibin , Salem Abouelnadar El. , Elbeltagi Ahmed , Salem Ali , Metwally Khaled A. , Zhang Guozhong , Elwakeel Abdallah Elshawadfy 
Published: February 2025

Abstract
Improving rice threshing unit performance and structure significantly enhances the thresher’s overall efficiency by raising its productivity while lowering costs and power consumption. This study evaluated and optimized longitudinal axial flow threshing device performance using two threshers’ structures, namely conical thresher and drum thresher, under different rotating speeds of 1100, 1300, and 1500 rpm and feeding rates of 0.8, 1.1, and 1.4 kg/s. The studied parameters were evaluated regarding thresher throughput, efficiency, seed damage, and specific energy, and it was figured that the experimental parameters greatly affected the whole performance of the threshing unit. The drum thresher increased the threshing throughput from 2304 to 2448 kg/h and maximized the efficiency from 98.6 to 99.07% at 1500 rpm rotation speed and 1.8 kg/s feeding rate. Moreover, it reduced the specific energy from 3.37 to 3.15 kW.h/ton for the experimental variables 1100 rpm speed and 1.4 kg/s feeding. The lowest damage rate of 0.24% was recorded using the drum thresher at a feeding rate of 0.8 kg/s and 1100 rotating speed. These results highlight the distinct effect of the new thresher structure and operating parameters on the rice threshing device’s overall effectiveness for medium-sized combine harvesters.
The Roles of Language Ability and Language Dominance in Bilingual Parent–Child Language Alignment
Authors: Slawny Caitlyn , Libersky Emma , Kaushanskaya Margarita 
Published: February 2025

Purpose:
In the current study, we examined the alignment of language choice of bilingual parent–child dyads in play-based interactions.

Method:
Forty-four bilingual Spanish–English parent–child dyads participated in a 10-min naturalistic free-play interaction to determine whether bilingual children and their parents respond to each other in the same language(s) across conversational turns and whether children's language ability and children's and parents' language dominance affect language alignment. Children's language ability was indexed by the Bilingual English–Spanish Assessment. Logistic regression was used to test the effects of children's language ability and children's and parents' language dominance on the alignment of language choice.

Results:
Results revealed that children and parents largely aligned their language choice and that children's and parents' language dominance, but not children's language ability, influenced alignment. Patterns of alignment differed between children and parents. Children aligned to their dominant language, and this was true for both English- and Spanish-dominant children. In contrast, English-dominant parents aligned equally to both languages, whereas Spanish-dominant parents aligned significantly more to Spanish.

Conclusion:
Together, these findings suggest that bilinguals' alignment of language choice is deeply sensitive to language dominance effects in both children and adults but that parents may also choose their language strategically in conversations with their children.
Time‐Based Wireless Synchronous Detection of Bioimpedance Signals
Authors: Valente Virgilio , Ashrafirad Hanieh 
Published: February 2025

ABSTRACTThis letter presents a novel time‐based scheme for wireless measurement of bioimpedance. Conventional circuits measure impedance in the analogue or digital domain, incurring in high power and area consumption resulting from either the use of analogue multipliers and high‐order filters, or high‐speed ADCs. Wireless transmission of impedance bits further results in a power penalty. Time domain solution offer a unique advantage both in terms of power consumption and technology scalability. Here we present a system that combines a pulse‐width modulation–pulse position modulation readout with a pulse‐harmonic modulation wireless link for power efficient transmission of impedance data. The paper presents a system‐level description of the wireless readout architecture and its operation simulated in MATLAB/SIMULINK and LTSpice. The work presented here can provide the foundation for the design of novel time‐based energy‐efficient wireless impedance analysers.
Beyond the Bone: A Case Report and Review of Literature of Extraskeletal Chondroblastic Osteosarcoma of the Scalp
Authors: Dhameliya Ankit J. , R. Navaudhayam , Agrawal Anu , Kaur Jaspreet , Yadav Vikas 
Published: February 2025

AbstractExtraskeletal osteosarcoma (EOS) of the scalp is an extremely rare malignant mesenchymal tumor that accounts for approximately 1 to 2% of all soft tissue sarcoma and 2 to 4% of all osteosarcoma. A 40-year-old man presented with painless swelling on the left side of the scalp for 3 months and right-side limb weakness for 10 days. The patient underwent surgery and the postoperative histopathology report was suggestive of chondroblastic osteosarcoma of the scalp. The patient received five cycles of Adriamycin-based systemic therapy. A response assessment imaging was done, which was suggestive of partial response. Osteosarcoma is chemotherapy- and radiotherapy-resistant tumor; hence, it requires a combined modality approach. Complete surgical excision with adequate surgical margin followed by adjuvant chemotherapy and radiation therapy proved to be one of the optimal treatment modalities.
Validation of Malayalam Translation of the Sydney Swallow Questionnaire (MSSQ): A Prospective Cross-Sectional Study
Authors: Narasimhan Srirangam Vijayakumar , Nair Daya R. 
Published: February 2025

AbstractThe study aimed to cross-linguistically adapt the Sydney Swallow Questionnaire in Malayalam (MSSQ) and to determine its psychometric properties. The objectives of our study were to document the test–retest reliability, internal consistency, and discriminant validity of MSSQ. The SSQ was translated from English to Malayalam, and was administered to 55 Malayalam-speaking participants with oropharyngeal dysphagia and 55 age- and gender-matched Malayalam speakers with normal swallowing ability. The Kolmogorov—Smirnov normality test was performed to check the normality of the data. Cronbach's alpha was used to measure the test–retest reliability. Internal consistency was measured through split-half reliability using the Spearman–Brown correlation coefficient. The discriminant validity was documented using the Mann–Whitney U-test. The Cronbach's alpha value for the total MSSQ scores was 0.99, indicating a strong positive correlation between the test and retest scores. The Spearman–Brown correlation coefficient was 0.97, indicating that the MSSQ had excellent internal consistency. Mann–Whitney U-test revealed that Group 1 participants had significantly higher MSSQ scores than Group 2 participants, exhibiting excellent discriminant validity. It was concluded that the MSSQ was a valid and reliable tool to assess the symptoms of dysphagia among Malayalam speakers.
Study of Immunohistochemical Expression Patterns of Mismatch Repair Proteins in Endometrial Carcinoma and Endometrial Hyperplasia: An Institutional Study
Authors: Tulsidas Belani Vaishali , Sahu Kausalya Kumari , Rao Ranjitha , Rai Sharada , G.V Chaithra , Philipose Cheryl Sarah 
Published: February 2025

Abstract
Introduction Endometrial carcinoma (EC) is the most common cancer in women (7% of all malignancies) standing fourth in prevalence. Its molecular categorization has lately gained substantial importance, because of its prognostic implications and association of mismatch repair (MMR) proteins with Lynch syndrome.
Objectives Our aim of the study was to analyze the expression of MMR proteins (MLH1, PMS2, MSH6, MSH2) in EC and Endometrial hyperplasia (EH).
Materials and Methods This study was performed on 52 EC and 65 EH cases (7 cases - disordered proliferative endometrium, 12 cases - EH with atypia, 46 cases - EH without atypia). Immunohistochemical staining with MLH1, PMS2, MSH6, and MSH2 were performed. SSPS software version 25 with chi-square test was used in statistical analysis.
Results Out of 52 cases of EC, 42 (80.76%) cases were identified as MMRd.MLH1 negative expression, which was significant (p: 0.005) compared with other markers. Also, there was significant statistical correlation (p: 0.004) between lower International Federation of Gynecology and Obstetrics grade and MLH1/PMS2 loss. Only six cases of EC had notable family history. Of 12 cases of EH with atypia, 91.66% (11/12) were MMR deficient (MMRd), whereas in EH without atypia 69.23% (32/46) were of MMRd. Paired expression of MLH1/PMS2 and MSH2/MSH6 was observed in EC whereas it was not seen in EH. MLH1 loss was the most common protein loss both in EC and EH with atypia.
Conclusion MLH1/PMS2 combination was the most common protein deficiency seen in EC. We found considerable proportion of EC cases with MMRd. This implies the need of incorporating routine MMR protein assessment by immunohistochemistry in all the patients diagnosed as EC as it will affect the further treatment and management.
A review of the ecology and conservation of the yellow-bellied glider
Authors: Goldingay Ross L. 
Published: February 2025

The conservation of Australia’s wildlife requires detailed knowledge of the ecology of individual species. That knowledge needs to be synthesised from time to time so that a consistent understanding arises and that knowledge gaps are identified. The yellow-bellied glider (Petaurus australis) is a forest-dependent species of eastern and southern mainland Australia that has been a focal species for research because it occurs in forest subject to logging. In 2022, it became listed by the Australian government as a threatened species throughout its geographic range, highlighting the need for a detailed review of its ecology and conservation requirements. I reviewed 161 articles, which showed that the most frequently covered topics were on its diet and foraging behaviour, habitat and surveys and distribution. A prominent item in its diet is eucalypt sap, which it obtains from a small number of trees in the forest (≤4% of available trees), and which are incised repeatedly, although periodically, over many years. Yellow-bellied gliders make frequent loud calls at night to advertise territories defended by family groups of two to six individuals. This calling behaviour forms the basis of population monitoring, including recently by using audio-recorders. A paradoxical aspect of yellow-bellied glider ecology is that it is dependent on tree hollows for shelter, but its occurrence is generally not influenced by the abundance of hollow-bearing trees, probably owing to groups occupying large areas of forest (30–80 ha). More important drivers of its occurrence appear to be the availability of certain tree species favoured in sap feeding, a diversity of tree species (including winter-flowering) that provide an array of plant and insect exudates, and substrates for arthropods included in its diet. Threats to the yellow-bellied glider include habitat fragmentation and the recent wildfires that have caused a decline in many populations. Climate change is predicted to lead to widespread contraction in the geographic range. These threats highlight the need to identify multiple climate and wildfire refuges throughout its geographic range to ensure its long-term conservation. Long-term monitoring of these and other locations is needed to guide this conservation.
Development and optimization of a precision and reliable particle dispensing system integrated with a pendulum motion dispensing module
Authors: Lee Sanghyun , Yu Gwang Hyeon , Lee Sangmin , Kim Hojin 
Published: February 2025

Abstract
This study presents a novel approach to enhancing microparticle dispersion and ejection performance by utilizing a pendulum motion of a particle reservoir. Owing to their tendency to sediment in suspension, microparticles pose significant challenges in achieving consistent and repeatable ejections, often leading to nozzle clogging. To overcome these challenges, a three-axis automated particle dispensing system integrated with a rotational dispensing module was developed. The pendulum motions of the dispensing module were investigated to assess their impact on particle dispersion, including 90-degree, 180-degree, and 360-degree swings. The 360-degree pendulum motion sustained particle dispersion, leading to the consistent and reliable ejection of particles during continuous droplet ejection. Moreover, we evaluated a novel particle dispensing system, including the effects of particle suspension density and dispensing parameters on the ejection performance and dead volume of minute particle samples. Stable particle dispensing was achieved, with a CV below 7%, even at high concentrations (14% w/v). The number of ejected particles exhibited a linear relationship (R
2 = 99%) with suspension densities ranging from 1%–14% w/v. Furthermore, dispensing parameters such as the amplitude and duration of the applied pressure showed a linear correlation with both the number of ejected particles and the volume of ejected droplets (R
2 = 99%). The dead volume was 2 μl, representing 10% of the 20 μl small sample used. These results demonstrate the flexibility of the system in maintaining a high performance across a range of operational conditions. The findings highlight the potential of this rotational approach for enhancing the reliability and accuracy of particle dispensing in microfluidic applications.
Electromagnetic transmission enhancement in subwavelength inhomogeneous plasmas modulated by negative-permeability metamaterials
Authors: Chen Peiqi , Nie Qiuyue , Zhang Zhonglin , Meng Zhuotao , Yan Changshi , Liu Ao , Ai Xin , Shi Zhixin , Zheng Shulei , Wang Long 
Published: February 2025

Abstract
Pairing overdense or epsilon-negative (ENG) plasma with mu-negative (MNG) metamaterials has been demonstrated to be an effective way to enhance electromagnetic transmission efficiency in plasmas. However, existing theoretical and simulative works mainly considered ideal homogeneous models. In this paper, we further explored the influence of inhomogeneity on the matching processes between MNG metamaterials and 1D/2D inhomogeneous plasmas in the subwavelength regime. It is shown that for 1D subwavelength inhomogeneous plasma, there is only one parameter matching region for MNG metamaterials, where the optimal constitutive parameters depend on the relative/absolute thickness of MNG metamaterials and plasma, incident angle and specific density profiles of plasma, especially the position of maximum plasma frequency. For 2D subwavelength inhomogeneous plasma, due to the fact that MNG metamaterials can locally match with plasma at different positions and density gradient perpendicular to the incident direction can further manipulate the trajectory of electromagnetic waves, multiple and one primary transmission peaks can be observed under symmetric and asymmetric density profiles.
Broadband underwater sound absorption and performance optimization of a lightweight pressure resistance coating
Authors: Cui Jin , Zhao Dan , Dong Liqiang , Shu Xin , Wu Qiong , Liu Shaogang 
Published: February 2025

Abstract
To satisfy the requirements of underwater vehicles in large depths and high stealth performance, this paper proposed a lightweight pressure resistance coating designed by micro floating raft arrays. Based on the effective medium method, the coating is subjected to layered equivalent, and a theoretical calculation model for its sound absorption coefficient (SAC) is established. Moreover, the influence of coating parameters on its SAC is explored. The results indicate that the coating parameters have varying effectiveness on SAC and its corresponding frequency position, with Young’s modulus, Poisson’s ratio, loss factor and intermediate mass width having a particularly significant impact on SAC. Afterwards, the genetic algorithm is used to optimize each layer of the coating, resulting in an average SAC of 0.9127 in the range of 10 Hz–30 kHz and maintaining a quasi-perfect sound absorption state of 0.95–1 in the wide frequency range of 10–30 kHz. It is worth noting that the SAC is higher than 0.5 at frequencies above 0.72 kHz, while the thickness of the coating is only 1/52 of the corresponding frequency wavelength. Additionally, the coating’s average sound absorption performance is better than that of a homogeneous layer with the same thickness, but its mass is only about half that of the homogenous one. Furthermore, the coating can maintain over 80% of the high-efficiency sound absorption effect under 0°–60° sound wave incidence angle and hydrostatic pressure within 10 MPa. Overall, this paper provides a potential approach for the pressure resistance and lightweight design of anechoic coating.