bluuebunny/crossref_metadata_2025_split huggingface dataset:
Three-dimensional metamaterial for reconfigurable multi-band electromagnetically induced transparency based on VO2
Authors: Liang Jing-Jing , Li Bin , Yang Shu-Hui , Meng Rui , Zhang Li , Fu Zi-Hao , Hou Ya-Hui 
Published: October 2024

Conventional 2D planar metamaterials struggle to achieve multi-band electromagnetically induced transparency (EIT) effects due to structural constraints. This paper proposes what we believe to be a novel three-dimensional (3D) metamaterial consisting of a vertical split-ring resonator with vanadium dioxide (VO2) islands at the openings. Based on VO2’s reversible phase transition capabilities, the designed metamaterial has excellent reconfigurability for multi-band EIT effects. When the surface temperature is at room temperature, VO2 exhibits an insulating state. The near-field coupling between bright and dark modes leads to a triple-band EIT effect at 1.72, 1.82, and 1.91 THz, characterized by multi-band, low-loss, and narrowband filtering. In contrast, when the temperature exceeds 68°C, VO2 transitions to its metallic state, resulting in a single transmission window with favorable slow light characteristics. Compared to traditional EIT metamaterials, our work realizes multi-band modulation and switchable operating modes, enhancing flexibility and adaptability. The excellent performance indicates its suitability for various applications, including multi-channel sensors, switchable absorptions, enhancing coupling and slow light devices, etc.
High-resolution hyperspectral video imaging using a hexagonal camera array
Authors: Sippel Frank , Seiler Jürgen , Kaup André 
Published: October 2024

Retrieving the reflectance spectrum from objects is an essential task for many classification and detection problems, since many materials and processes have a unique spectral behavior. In many cases, it is highly desirable to capture hyperspectral images due to the high spectral flexibility. Often, it is even necessary to capture hyperspectral videos or at least to be able to record a hyperspectral image at once, also called snapshot hyperspectral imaging, to avoid spectral smearing. For this task, a high-resolution snapshot hyperspectral camera array using a hexagonal shape is introduced. The hexagonal array for hyperspectral imaging uses off-the-shelf hardware, which enables high flexibility regarding employed cameras, lenses, and filters. Hence, the spectral range can be easily varied by mounting a different set of filters. Moreover, the concept of using off-the-shelf hardware enables low prices in comparison to other approaches with highly specialized hardware. Since classical industrial cameras are used in this hyperspectral camera array, the spatial and temporal resolution is very high, while recording 37 hyperspectral channels in the range from 400 to 760 nm in 10 nm steps. As the cameras are at different spatial positions, a registration process is required for near-field imaging, which maps the peripheral camera views to the center view. It is shown that this combination using a hyperspectral camera array and the corresponding image registration pipeline is superior in comparison to other popular snapshot approaches. For this evaluation, a synthetic hyperspectral database is rendered. On the synthetic data, the novel approach, to our knowledge, outperforms its best competitor by more than 3 dB in reconstruction quality. This synthetic data is also used to show the superiority of the hexagonal shape in comparison to an orthogonal-spaced one. Moreover, a real-world high-resolution hyperspectral video database with 10 scenes is provided for further research in other applications.
What do Iranians value most when choosing a hospital? Evidence from a discrete choice experiment
Authors: Ranjbar Mohammad , Bazyar Mohammad , Pahlevanshamsi Fatemeh , Angell Blake , Assefa Yibeltal 
Published: October 2024

Background
Individual preferences have preceded the use of health care services, and it has been affected by different hospital attributes. This study aimed to elicit the Iranians’ preferences in choosing hospitals using a discrete choice experiment.

Methods
A discrete choice experiment (DCE) was conducted through face to face interviews with 301 participants. The DCE was constructed by six attributes were included based on a literature review, qualitative interviews, Focus Group Discussion (FGD) and consensus development approach: waiting time, quality of care, travel time, hospital type, provider competency, and hospital facilities. individuals’ preferences for hospital attributes were analyzed using a mixed logit model, and interaction terms were used to assess preference heterogeneity among individuals with different sociodemographic characteristics.

Results
Participants had strong and significant preferences for care delivered in hospitals with ‘full’ (β = 0.6052, p<0.001) or ‘moderate’ (β = 0.5882, p<0.001) hospital equipment and with ‘excellent’ provider competency (β = 0.2637, p<0.001). The estimated coefficients for the "waiting time of 120 minutes" (β = −0.1625, p<0.001) and the "travel time of 30 minutes" (β = −0.1157, p<0.001) were negative and significant. The results also show that the personal characteristics such as age, education level, and income significantly affected individual preferences in choosing a hospital.

Conclusion
Considering people’s preferences can be important given the more active role of today’s patients in decision-making about their treatment processes. The results of this study should be taken into consideration by health policymakers and all stakeholders to be aware of differences in preferences of people and maximize their satisfaction. In this case, it is important to continuously involve people and consider their preferences in the design, topology, construction, and equipment of hospitals.
Physical activity, weight management, and mental health during COVID-19 lockdown: A cross-sectional study of healthcare students in China
Authors: Zhang Rong , Yin Yuhuan , Zhang Yiyin , Feng Yuping , Meng Hongyan , Wang Jing , Zhang Min , Zhang Juxia 
Published: October 2024

Background
There is growing evidence that the social blockade brought about by the COVID-19 pandemic has dramatically affected college students’ physical activity; however, their weight management behaviors and mental health have not been fully explored, especially among healthcare students. This study aimed to assess physical activity, weight management behaviors, and mental health among healthcare students during the campus lockdown and to analyze the factors influencing physical activity.

Methods
A cross-sectional survey of 1,216 healthcare students from March 24, 2022, to April 11, 2022. To collect information about students’ physical activity, weight management behaviors, and mental health, they were asked to complete the Physical Activity Questionnaire-Short Form (IPAQ-SF), 11 issues related to weight management behavior, and the World Health Organization 5-Item Well-Being Index (WHO-5) questionnaire. Binary logistic regression was performed to determine the factors influencing physical activity.

Results
Almost half of the participants had low levels of physical activity (45%), the mean score for weight management behavior was 39.55±6.26, and 54.6% had low levels of well-being. Healthcare students without exercise habits during the non-epidemic period reported lower levels of physical activity (OR = 1.81; 95%CI = 1.41–2.34, P<0.001). Participants with poor weight management behavior were more likely than other participants to report lower levels of physical activity (OR = 0.92; 95%CI = 0.90–0.94, P < 0.001). Likewise, the odds of being physically inactive were higher among the happier participants (OR = 0.98; 95%CI = 0.96–0.99, P = 0.031).

Conclusions
During the COVID-19 lockdown, most healthcare students in Gansu province lack physical exercise and have a low health level. Significant correlation factors for low physical activity levels were grade level, non-lockout exercise habits, weight management level, and well-being. These findings demonstrate the importance of developing targeted policies and programs encouraging physical activity among medical students.
Cost-effectiveness of prophylactic ramosetron in the prevention of postoperative nausea and vomiting
Authors: Suh David , Kim Dong-Won , Lee Seung-Mi , Jung Yu-Seon , Jung Sun-Young , Kim Chul-Min 
Published: October 2024

Objectives
This study was conducted to assess the cost-effectiveness of prophylactic use of ramosetron compared to no antiemetic medications for the prevention of postoperative nausea and vomiting (PONV) from the healthcare payer and societal perspectives in South Korea.

Method
A decision analytic model was constructed to assess the cost-effectiveness of prophylactic ramosetron use versus no antiemetic therapy at 24-hour and 48-hour periods post-surgery over a 5-day duration. The model was populated using costs and utility parameters from published studies as well as from surveys of an expert panel of physicians using structured questionnaires. The cost parameters included the costs of drugs, treatment, patient time, productivity loss, and transportation. Effectiveness was measured using quality adjusted life years (QALYs). The study outcome was the incremental cost-effectiveness ratio (ICER). The parameter uncertainties were addressed using deterministic and probabilistic scenario analyses.

Results
The base-case analysis showed that, on average, patients treated with prophylactic ramosetron had lower costs from both the healthcare payer (US$16.88 vs US$17.33) and societal (US$16.89 vs US$18.72) perspectives and higher QALYs (0.0121 vs 0.0114) over the 5-day study duration compared to patients without any antiemetic medications. Deterministic and probabilistic sensitivity analyses were conducted to examine the robustness of results for the parameters included in the model. The acceptability curve probability showed that treating patients with ramosetron compared to no antiemetic medications was more than 99% cost-effective at a willingness-to pay threshold of US$5,000/QALY from both payer and societal perspectives.

Conclusion
The results demonstrated that prophylactic use of ramosetron compared to no antiemetic therapy is highly cost-effective to prevent PONV for patients undergoing surgery from both healthcare payer and societal perspectives. The cost effectiveness is the result of the decrease in the incidence of PONV and the direct treatment costs of severe PONV with improved patient quality of life.
Evaluating the quality and reliability of YouTube videos on scabies in children: A cross-sectional study
Authors: Ozdemir Kacer Emine , Kacer Ilayda 
Published: October 2024

Background
Recently, there has been an increase in scabies cases among young children in low- and middle-income countries. With the rise of online health information, platforms such as YouTube have become popular sources of disease-related content, but the accuracy of this information remains a concern.

Aim
This study evaluates the reliability and quality of YouTube videos concerning scabies in children to address the lack of research in this area.

Materials and methods
A cross-sectional analysis was conducted on April 1, 2024, reviewing the first 200 relevant YouTube videos with the search terms “scabies” and “scabies in children.” Videos were assessed using modified DISCERN (mDISCERN), Global Quality Score (GQS), and Journal of the American Medical Association (JAMA) scoring systems. Statistical analysis included descriptive statistics, Kruskal-Wallis tests, and Spearman correlation analysis.

Results
Out of 200 videos, 107 met the inclusion criteria. The average mDISCERN score was 2.17, GQS was 2.63, and JAMA was 2.05, indicating generally poor quality. Videos by patients had the highest quality scores, while those from academic institutions had the highest JAMA scores. Longer videos with higher view counts were associated with better quality.

Conclusion
This study reveals that the majority of YouTube videos on scabies in children are of low quality. There is a need for healthcare professionals to produce more accurate and reliable content to improve the quality of information available on YouTube. Further research should focus on enhancing the quality of health information on digital platforms.
The effect of results-based motivating system on metabolic risk factors of non-communicable diseases: A field trial study
Authors: Asadi-Aliabadi Mehran , Karimi Seyed M. , Mirbaha-Hashemi Fariba , Tehrani-Banihashemi Arash , Janani Leila , Babaee Ebrahim , Nojomi Marzieh , Moradi-Lakeh Maziar 
Published: October 2024

Background
Non-communicable diseases can be controlled and managed by reducing their associated metabolic risk factors. In this study, a set of intervention packages were designed to reduce the prevalence of three common metabolic risk factors (hypertension, hyperlipidemia, and obesity and overweight) in the community by motivating non-physician health workers.

Methods
A field trial study was conducted in 4 districts of Iran. Thirty-two community health centers were randomly selected. A survey of 30 to 70-year-old was conducted to measure baseline metabolic risk factors. The intervention packages focused on improving hypertension, hyperlipidemia, obesity and overweight. The interventions included goal-setting, evidence-based education, operational planning, and incentive payments for non-physician health workers. A second survey to measure the final metabolic risk factors was performed after one year. The difference-in-difference method was used to evaluate the effectiveness of the intervention packages.

Results
The average age of participants in both surveys was 49 years. The interventions had statistically significant effects only on decreasing the prevalence of overweight and obesity. The package with all the interventions except pay-for-performance decreased the odds of overweight and obesity to 0.57 (95% CI: 0.34, 0.95).

Conclusions
Involving non-physician health workers and having action plans based on the health needs of the covered population can decrease obesity and overweight in the community. However, longer trials are needed to observe the effects on hypertension and hyperlipidemia.
Prevalence and correlates of malaria and undernutrition among acutely febrile children visiting temporary malaria screening sites in war-torn areas of Northeast Ethiopia
Authors: Debash Habtu , Alemayehu Ermiyas , Belete Melaku Ashagrie , Ebrahim Hussen , Mohammed Ousman , Gebretsadik Daniel , Tilahun Mihret , Shibabaw Agumas , Mulatie Zewudu , Eshetu Bruktawit , Gebremichael Saba , Gedefie Alemu 
Published: October 2024

Background
Malaria and undernutrition pose challenges for children in conflict-affected areas. Understanding the prevalence and risk factors for these issues in war-torn communities is important to effectively design aid efforts and select interventions. This study aimed to determine the prevalence and correlates of malaria and undernutrition among febrile children in northeast Ethiopia to help address these problems.

Methods
A cross-sectional study was conducted from November 2022 to January 2023. Four hundred twenty-two children were enrolled using a systematic random sampling technique. Data on associated factor variables were collected via questionnaire. Capillary blood samples were collected from each child to prepare thick and thin blood films, which were stained with Giemsa and examined microscopically. Height and weight measurements were also taken using a meter and a standard calibrated balance. The data were analyzed in SPSS 26.0 using bivariable and multivariable logistic regression to determine associations between correlates, malaria infection, and undernutrition. Statistical significance was set at p < 0.05.

Results
The overall malaria prevalence among screened children at temporary sites in the conflict-affected areas of Northeast Ethiopia was 65.9% (278/422). Plasmodium falciparum, P. vivax, and mixed infections accounted for 74.1%, 19.8%, and 6.1% of the cases, respectively. The presence of stagnant water (P<0.01), improper utilization of ITN, inadequate number of ITNs per family size (P<0.01), and absence of environmental management (P<0.01) were independent predictors of malaria. On the other hand, the overall undernutrition prevalence was 54.7% (231/422), including 26.5% underweight, 16.8% stunted, and 11.4% wasted. Dietary diversity score (P<0.01), meal frequency (P<0.01), and confirmed malaria infection (P<0.01) were significantly associated with underlnutrition.

Conclusion
Both malaria and undernutrition burdens were high among the children in this study. The findings suggest combined prevention measures for malaria and undernutrition should be strengthened in this region.
Assessment of autostereoscopic perception using artificial intelligence-enhanced face tracking technology
Authors: Yu Bo , Liu Lu , Yang Ning , Zhao Lingzhi , Wu Huang 
Published: October 2024

Purpose
Stereopsis, the ability of humans to perceive depth through distinct visual stimuli in each eye, is foundational to autostereoscopic technology in computing. However, ensuring stable head position during assessments has been challenging. This study evaluated the utility of artificial intelligence (AI)-enhanced face tracking technology in overcoming this challenge by ensuring that each eye consistently receives its intended image.

Methods
The Lume Pad 2, an autostereoscopic tablet with AI-enhanced face tracking, was utilized to simulate quantitative parts of the Stereo Fly test and TNO Stereotests for contour and random dot stereopsis. The study recruited 30 children (14 males and 16 females, mean age of 9.2 ± 0.3 years, age range of 6–12 years) and 30 adults (10 males and 20 females, mean age of 29.4 ± 1.0 years, age range of 21–42 years) to assess the tablet’s inter-session reliability. Agreement between conventional and the autostereoscopic tablet-simulated stereotests was tested in a larger group of 181 children (91 males and 90 females, mean age of 9.1 ± 0.4 years, age range of 6–12 years) and 160 adults (69 males and 91 females, mean age of 38.6 ± 2.1 years, age range of 21–65 years). Inter-session reliability and agreement were analyzed using weighted Kappa coefficient and non-parametric Bland-Altman analysis.

Results
The autostereoscopic tablet demonstrated high inter-session reliability (κ all > 0.80), except for the simulated TNO Stereotest in adults, which demonstrated moderate inter-session reliability (κ = 0.571). Non-parametric Bland-Altman analysis revealed zero median differences, confirming consistent inter-session reliability. Similar patterns were observed in comparing AI-based and conventional methods, with both the weighted Kappa coefficient (κ all > 0.80) and non-parametric Bland-Altman analysis indicating significant agreement. The agreement between methodologies was confirmed by permissible differences, which were smaller than the minimum step range.

Conclusion
The integration of AI-based autostereoscopic technology with sub-pixel precision demonstrates significant potential for clinical stereopsis measurements.
Nonexistence of the compressible Euler equations with space-dependent damping in high dimensions
Authors: Geng Jinbo , Hu Ke , Lai Ning-An , Yuen Manwai 
Published: October 2024

Abstract
Compressible Euler equations with space-dependent damping in high dimensions

R

n

(

n
=
2
,
3

)

{{\bf{R}}}^{n}\hspace{0.33em}\hspace{0.33em}\left(n=2,3)

are considered in this article. Assuming that the small initial velocity and small perturbation of the initial density have compact support, we establish finite-time blow-up results for the Euler system, by combining energy estimate and new test functions constructed by the solutions of the following linear elliptic partial differential equations system:

−

G

1

(

x

)

+

∇

⋅

G

2

→

(

x

)

=
0
,

−

G

2

→

(

x

)

+

∇

G

1

(

x

)

=

μ

G

2

→

(

x

)

(

1
+
∣
x
∣

)

λ

.

\left\{\begin{array}{l}-{G}_{1}\left(x)+\nabla \cdot \overrightarrow{{G}_{2}}\left(x)=0,\\ -\overrightarrow{{G}_{2}}\left(x)+\nabla {G}_{1}\left(x)=\frac{\mu \overrightarrow{{G}_{2}}\left(x)}{{(1+| x| )}^{\lambda }}.\end{array}\right.

This result generalizes the one in the literature from

1
−
D

1-D

to high dimension

R

n

(

n
=
2
,
3

)

{{\bf{R}}}^{n}\hspace{0.33em}\hspace{0.33em}\left(n=2,3)

.
On implicit extensions in many-valued logic
Authors: Marchenkov Sergey S. 
Published: October 2024

Abstract
We consider Kuznetsov’s implicit expressibility and its generalizations, when the implicit expressibility language is augmented with the additional disjunction, implication, and negation logical connectives. It is shown that, for each k ⩾ 3, the implicit extensions in Pk
have the cardinality of the continuum. For each k ⩾ 3, we also prove that each of the sets of positively implicit, implicatively implicit, and negatively implicit extensions in Pk
contains, respectively, as a proper subset, the set of positively implicit, implicatively implicit, and negatively implicit closed classes. We verify that, for k ⩾ 2, the functions of the set

H
k
∗

$\begin{array}{}
\displaystyle
H_k^*
\end{array}$

of homogeneous functions preserving the set E

k−1 can be used for producing implicatively implicit and negatively implicit extensions without changing the result.
Negative correlative coordination in Indo-European: emergence, evolution and variability
Authors: Salaberri Iker 
Published: October 2024

Abstract
This paper presents an analysis of the emergence, evolution and variability of negative correlative coordination (ncc) constructions in Indo-European, such as Armenian očʻ A (ew) očʻ B and Hindi nə A nə B. A new definition of ncc is put forward that takes into account the construction’s semantic and pragmatic properties, and this clause linkage strategy is analyzed in a sample of 240 historical and present-day doculects. It is argued that ncc constructions emerged in the proto-language by analogy with positive correlative conjunctions like Latin A-que B-que. The relationship between positive and negative correlative conjunctions is argued to be due to the fact that both constitute a system of question and response. Furthermore, a cyclic change is identified by which ncc markers bleach through frequent use and are regularly reinforced and renovated. A number of paths of renewal are identified, which are used to explain the variation of ncc constructions observed across the Indo-European family.
Football Fans’ Interest in and Willingness-To-Pay for Sustainable Merchandise Products
Authors: Scharfenkamp Katrin , Wicker Pamela 
Published: October 2024

Abstract
According to the German Football League’s guidelines, football clubs are expected to contribute to sustainable development. This study analyzes football fans’ interest in and willingness-to-pay for socially and environmentally sustainable merchandise clothing. Data from fans of a German Football Bundesliga club were collected using an online survey in 2022 (n = 1,019). A set of linear, logistic, log-linear, and zero-inflated Poisson regressions was estimated. The estimations reveal that environmental concerns, environmental knowledge, past purchase of merchandise products, and awareness of sustainable labels significantly positively affect fans’ interest in sustainable clothing. The probability of reporting a positive willingness-to-pay (>€0) is significantly positively affected by fans’ interest in sustainable clothes. Team identification has a significant negative effect on the amount of willingness-to-pay for a sustainable t-shirt in the subsample of respondents with a positive willingness-to-pay.