bluuebunny/crossref_metadata_2025_split huggingface dataset:
Individual and community-level determinants of knowledge of obstetric danger signs among women in Southern Ethiopia: A multi-level mixed effect negative binomial analysis
Authors: Yoseph Amanuel , Simachew Yilkal , Tsegaye Berhan , Borsamo Asfaw , Seifu Yohans , Belayneh Mehretu 
Published: January 2025

Introduction
One of the key strategies to achieve the sustainable development goal by reducing maternal deaths below 70 per 100,000 is improving knowledge of obstetric danger signs (ODS). However, mothers’ knowledge of ODS is low in general and very low in rural settings, regardless of local and national efforts in Ethiopia. Further, there is significant variation of ODS knowledge among women from region to region and urban/rural settings. Most studies are limited only to northern Ethiopia and focused on individual-level determinants. Thus, this study aimed to assess the individual and community-level determinants of knowledge of obstetrics danger signs among women who delivered in the last 12 months in the northern zone of the Sidama region, Ethiopia.

Methods
We conducted a community-based cross-sectional study from October 21 to November 11, 2022. A multi-stage sampling procedure was utilized to select study participants. A structured and pretested questionnaire was utilized to collect data. Open Data Kit (ODK) smartphone application was used to collect data at women’s homes. A multi-level mixed-effects negative binomial regression model was used to control effects of clusters and confounders.

Results
The overall response rate of this study was 99.12%. The proportion of knowledge of obstetrics danger sign was 22.3% (95% CI: 18.7, 25.9). Government-employed women [adjusted incidence ratio (AIR) = 1.37; 95% CI: 1.20, 1.56], women who had exposure to mass media (AIR = 1.16; 95% CI: 1.08, 1.25), women who had received model family training (AIR = 1.15; 95% CI: 1.10, 1.25), autonomous women (AIR = 1.34; 95% CI: 1.25, 1.46), women who had faced health problems during pregnancy (AIR = 1.21; 95% CI: 1.11, 1.32), and urban women (AIR = 1.22; 95% CI: 1.09, 1.62) were determinants positively affect knowledge of ODS.

Conclusion
Only one in five women has good knowledge of ODS in the study setting. Urban residence, mass media exposure, receiving model family training, facing health problems during pregnancy, and women’s autonomy were the main determinants of knowledge of ODS. Any intervention strategies should focus on multi-sectorial collaboration to address determinants of knowledge of ODS at the individual and community level. Reinforcing the existing model family training, particularly focusing on rural women and women who denied autonomy in decision-making about health care, should be considered. Awareness creation should be increased about ODS through mass media exposure.
Construction of management tools for early warning of prevacuum steam sterilization failure
Authors: Zhao Xin , Liu Ting , Ma Ning , Wang Ran , Li Ying , Shen Tong 
Published: January 2025

Objective
The aim of this study is to develop a set of management tools for early warning of steam sterilization failure, including a failure risk checklist and a calculation model for assessing early sterilization failure risk, and to verify the early warning effectiveness of the management tools through check experiment.

Methods
This study included two stages. The first stage involved the construction of a failure risk checklist and the development of a computational formula for early sterilization failure risk by expert consultation. In the second stage, the early warning effectiveness of the sterilization failure management tools was verified through a comparative verification method based on the consultation results of two experts.

Results
The evaluation system comprised a total of 10 early warning indicators divided into 3 categories: "Staff", "Steam sterilizer" and "Medical devices". The Cronbach’s α coefficient for internal consistency reliability was 0.837, the total content validity index (S-CVI) was 0.884, and the item-content validity (I-CVI) ranged from 0.762 to 1. In management practices, the sterilization qualification rate of the experimental group was 100%, compared to 99.78% in the control group. There were significant differences between the two groups in terms of accidental downtime (hours) and the normal operation rate of the equipment caused by equipment failure.

Conclusion
This study constructed an early warning model for the vacuum steam sterilization process failures. This model facilitates more accurate identification of sterilization failure risks, which helps medical institutions in enhancing sterilization quality control and early interventions.
The influence of cognitive reserve on ERP measures of selective visual attentional processing in older adults after mild traumatic brain injury
Authors: Balart-Sánchez Sebastián A. , Bittencourt Mayra , Jalili Seyedehzahra , van der Naalt Joukje , Maurits Natasha M. 
Published: January 2025

Objective
Older adults have an increased risk of developing persistent cognitive complaints after mild traumatic brain injury (mTBI). Yet, studies exploring which factors protect older adults with mTBI from developing such complaints are rare. It has been suggested that one such factor may be cognitive reserve (CR), but it is unknown how CR influences cognition in this patient category. Here, we therefore study how CR influences brain processes during a task that taps into attention, an important cognitive function.

Methods
We studied 17 older adults (13 males, mean 68.18 (SD 5.08) years old) at the subacute stage after mTBI and 19 age- and CR-matched participants without mTBI; 9 males, mean 67.79 (SD 5.36) years old) performing a selective visual attentional processing task while recording EEG. The P2 brain event-related potential component was obtained by averaging over electrodes in the fronto-central region of interest and its amplitude and latency were derived as neural correlates of attentional processing. The inverse efficiency score (IES) was derived from accuracy and reaction times as a measure of performance. To investigate the effect of CR on performance and P2 component characteristics, three separate mixed model repeated measures analyses of covariance (RM-ANCOVA) were performed.

Results
Performance did not significantly differ across groups or task conditions, nor was it significantly influenced by CR. Main effects of CR illustrated that the P2 latency was delayed (p = .03) and the P2 amplitude increased (p = .02) with higher CR across groups. Furthermore, CR correlated positively with P2 latency in both groups (older adults without mTBI: r = .370, p = .005, older adults with mTBI: r = .287, p = 0.041), and with P2 amplitude in the older adults with mTBI (r = .595-.636, p<0.001-.011). We found no main or interaction effects of group or task condition on P2 characteristics.

Conclusion
Older adults with mTBI with higher CR employ more brain resources than older adults with mTBI with lower CR, accompanied by slower processing, suggesting that it may have resulted in similar performance at a selective visual attentional processing task. To better interpret these findings in the context of persistent complaints and establish that higher CR in these patients may result in better performance, our study needs to be repeated with more participants.
Mortality and predictors among HIV-TB co-infected patients in Ethiopia: A systematic review and meta-analysis
Authors: Wondie Wubet Tazeb , Wubneh Chalachew Adugna , Legesse Bruck Tesfaye , Mekonen Gebrehiwot Berie , Zemariam Alemu Birara , Gebreegziabher Zenebe Abebe , Gedefaw Gezahagn Demsu , Bekele Gemechu Gelan , Regassa Belay Tafa 
Published: January 2025

Background
HIV-TB co-infection poses a significant public health threat, notably in sub-Saharan Africa including Ethiopia. Despite this public health problem, studies in Ethiopia regarding the mortality of HIV-TB co-infection patients have been inconsistent, and the overall estimate of mortality was not determined. Accordingly, this meta-analysis aims to assess the magnitude of mortality and predictors among HIV-TB co-infected patients in Ethiopia.

Methods
A search of the literature was conducted from three databases (PubMed, Global Index Medicus, and CINHAL), and other sources (Google Scholar, Google, Worldwide Science). All observational studies that reported the mortality of HIV-TB co-infected patients in Ethiopia were included. Joanna Briggs Institute’s (JBI) quality appraisal checklist was used to assess the quality of studies. Effect sizes were pooled using the random effects model. Heterogeneity was assessed using Cochrane Q and I2 test statistics, and the prediction interval was determined. Subgroup analysis was conducted by region. To examine the presence of an influential study, a sensitivity analysis was done. Egger’s test was used to check publication bias. A non-parametric trim and fill analysis was carried out.

Results
A total of 886 studies were identified, using database searches and keywords. Of these, 37 met the criteria for inclusion. The pooled proportion of mortality among HIV-TB co-infected patients was found to be 18.42% (95% CI:14.27–22.57). In the subgroup analysis, the highest mortality was observed in the Tigray region at 31.86% (95% CI: 7.69–56.03), and the lowest mortality was reported in two general studies in Ethiopia 11.95 (95% CI: 4.19–19.00). From the examined 20 predictors, only four predictors such as Anaemia (HR = 2.25, 95% CI: 1.65–3.07), Poor adherence to ART (HR = 2.42, 95% CI: 1.39–4.21), not taking co-trimoxazole preventive therapy (HR = 1.87, 95% CI: 1.28–2.73), and extrapulmonary tuberculosis (HR = 1.23, 95% CI: 1.01–1.51) were significant predictors.

Conclusions
In Ethiopia, 18.42% of HIV-TB co-infected patients died. Anaemia, poor adherence, not taking CPT, and extrapulmonary tuberculosis were found to be significant predictors. Hence, the concerned stakeholders need to expand and strengthen the HIV-TB collaborative services and attention should be given to patients presented with the aforementioned predictors.

Trial registration
This meta-analysis has been registered in PROSPERO with registration number CRD42023466558.
Iridescent Kuwait: Petro-Modernity and Urban Visual Culture Since the Mid-Twentieth Century, Laura Hindelang (2022)
Authors: Cooke Miriam 
Published: January 2025

Review of: Iridescent Kuwait: Petro-Modernity and Urban Visual Culture Since the Mid-Twentieth Century, Laura Hindelang (2022)
Boston, MA: De Gruyter, 261 pp., 29 b&w and 67 colour illus.,
ISBN: 9783110714661, $44.99 (paperback);
ISBN: 9783110714739, open access (eBook)
Modeling propagation competition between hostile influential groups using opinion dynamics
Authors: Chen Yuhong , Li Cong , Liu Fangzhou , Buss Martin 
Published: January 2025

Abstract
We model the propagation competition between hostile groups as an opinion dynamic game. The model is based on a variant of the DeGroot model. In the cost function, we considered the regulation from the platform and the intention to nudge the opponent against the regulation. Considering the unavailability of network relations, we use reinforcement learning to search for the feedback strategy of both parties. In the simulation, we verified the effectiveness of this method and showed that the stricter the platform regulation, the more conducive to the formation of consensus.
A wideband tunable quadrature coupler with flat coupling
Authors: Mextorf Henning , Schernus Winfried 
Published: January 2025

Abstract
This paper presents a wideband reconfigurable coupler with tunable coupling ratios. It consists of two 3 dB quadrature couplers and two varactor-based continuously tunable reflection networks. The instantaneous bandwidth is enhanced by adding matching networks at all four ports. The proposed four port with reflection symmetry offers a return loss greater than 15 dB and an isolation greater than 20 dB through a fractional bandwidth of 23 % while exhibiting a very flat response. The coupling ratio can be tuned from −9 dB to 0.1 dB.
Ultrasonic metal welding of Al/Cu joints with Ni coating: parametric effects on joint performance and microstructural modifications
Authors: Das Soumyajit , Satpathy Mantra Prasad , Routara Bharat Chandra , Nanda Basanta Kumar , Sahoo Susanta Kumar 
Published: January 2025

Abstract
The increasing adoption of lithium-ion battery packs in electric vehicles has sparked considerable interest in choosing the appropriate busbar material and obtaining suitable mechanical, electrical, and thermal properties of the welded joints. This study comprehensively employs ultrasonic metal welding to create tab-to-busbar connections utilizing 0.3 mm nickel-coated copper and 0.5 mm aluminum sheets. Joint mechanical performance, microstructural characterization, and welding mechanism at different weld energies and clamping pressures are studied to understand the material flow, inter-atomic mixing, and newer grain formation phenomena. The correlation between the dynamic characteristics of electrical contact resistance and the resulting temperature is also revealed under various welding conditions by applying current through the joints. The micro-hardness analysis disclosed the different weld zones of distinctive values where the material has been mixed. Further, the nickel coating on the copper surfaces facilitates metallurgical bonding to a significant extent. The results revealed that the inter-atomic diffusion, wave-like bonding area, and micro-bond development on the weld cross-sectional surface are the foremost reasons for satisfactory welds.
Deep embedded based energy efficient user grouping and Kookaburra Goshawk optimization for optimal power allocation in Terahertz MIMO-NOMA systems
Authors: Borakhade Deepali Kishor , Gawali Vikram Sadashiv , Sapkale Pallavi 
Published: January 2025

Abstract
In recent years, terahertz (THz) communications have gained significant attention due to their potential for supporting ultra-high data rates in future wireless systems, particularly in multiple-input multiple-output non-orthogonal multiple access (MIMO-NOMA). However, efficient power allocation and interference management remain critical challenges. In this work, a power allocation approach is devised for THz MIMO-NOMA systems based on fuzzy integrated user pairing. First, the system model is considered and the devised work is based on grouping the users and hybrid precoding. By considering three constraints including position, signal to interference plus noise ratio (SINR), and initial power the user grouping procedure is done. Additionally, the grouping of users is based on the deep-embedded fuzzy clustering, where the measure of distance is modified by applying the above-mentioned three parameters. Next, the hybrid precoding of the THz MIMO-NOMA scheme is done. Later, the power allocation is done based on the user grouping, which is performed concerning the established Kookaburra goshawk optimization (KGO) by employing energy efficiency (EE), a utility function. Here, the KGO is established by unifying the Kookaburra optimization algorithm (KOA) and northern goshawk optimization (NGO). The KGO for power allocation reached the maximal achievable rate, EE, sum rate, utility, and simulation time of 0.958, 0.909, 0.858, 0.899, and 3.579, respectively, for 400 users.
Space-time wedges
Authors: Bahrami Amir , De Kinder Klaas , Li Zhiyu , Caloz Christophe 
Published: January 2025

Abstract
Space-time–modulated systems have attracted significant interest over the past decade due to their ability to manipulate electromagnetic waves in unprecedented ways. Here, we introduce a new type of space-time–modulated structure, the space-time wedge, consisting of two interfaces moving at different velocities, which results in either closing or opening wedges. Using moving boundary conditions, we derive closed-form solutions for the scattering of electromagnetic waves in such a wedge and leverage these solutions to unveil the underlying physics, including multiple space-time scattering and Doppler shifting. The space-time wedge holds potential for various optical and photonic applications.
Tunneling of two-dimensional surface polaritons through plasmonic nanoplates on atomically thin crystals
Authors: Lee Seojoo , Kang Ji-Hun 
Published: January 2025

Abstract
We theoretically investigate the tunneling of two-dimensional surface polaritons (2DSPs) through plasmonic nanoplates on atomically thin crystals. By developing an analytic model based on coupled-mode theory, we examine the tunneling efficiency as a function of the plate’s width and height. Our analysis reveals that the tunneling is mediated by evanescent waves induced near the plate edges due to interactions between 2DSPs and the plate, enabling the consistent recoupling of 2DSPs across plates of finite width, regardless of their height. Additionally, we clarify that these evanescent waves not only facilitate tunneling but also induce an anomalous phase shift in the 2DSPs reflected from the plate. This phase shift is shown to play a critical role in the resonant tunneling of 2DSPs through two plates, effectively creating a polariton-assisted resonator in the deep subwavelength regime.
Evaluation of Consumer Masstige Brand Relationship Between Generations
Authors: Rodrigues Paula , Sousa Ana , Borges Ana Pinto 
Published: January 2025

Abstract
This study expands the conceptual model on the antecedents and consequences of masstige brands by analysing the similarities and differences in consumer perceptions between Generations Z and Y. Focusing on Chinese consumers, data were collected via a structured survey and analysed using Partial Least Squares Structural Equation Modelling (PLS-SEM) and bootstrapping to ensure methodological rigor. The results validate the conceptual framework, showing partial measurement invariance between the two generational cohorts, indicating that while both groups share similar perceptions of masstige brands, key differences exist in how they relate to brand loyalty. This study offers empirical validation of the model, addressing a gap in the literature by testing masstige brand constructs using the Masstige Mean Score Scale (MMSS). The findings contribute to masstige branding strategy by highlighting generational nuances and confirming that Generations Z and Y in China exhibit comparable but distinct engagement with masstige brands, providing insights for more targeted brand strategies.
Tobacco induces abnormal metabolism of tryptophan via the kynurenine pathway
Authors: Onmaz Mustafa , Eryavuz Onmaz Duygu , Demirbas Nur , Kutlu Ruhusen , Unlu Ali , Hatir Ahmet Emre 
Published: January 2025

Abstract

Objectives
This study aims to investigate the effect of smoking on the metabolism of kynurenine and thus contribute to the elucidation of the potential mechanism of cigarette smoking.

Methods
The study included 82 smokers and 63 nonsmokers who applied to the Family Medicine Polyclinic for routine check-ups. Sociodemographic data, routine laboratory results, Framingham risk scores (FRS), and Fagerström Nicotine Dependence Test (FTND) were recorded. Serum tryptophan, kynurenine, kynurenic acid, 3-hydroxyanthranilic acid, 3-hydroxykynurenine, and quinolinic acid concentrations were measured with tandem mass spectrometry.

Results
Serum tryptophan levels (p=0.040) were statistically significantly lower in smokers, and the kynurenine/tryptophan ratio and serum kynurenine, kynurenic acid, quinolinic acid, 3-hydroxyanthranilic acid levels were higher (p<0.001). The correlation analysis in the smoker group showed a positive correlation between serum kynurenic acid levels and FTDN. The serum kynurenine levels were positively correlated with the levels of total cholesterol, triglyceride, low-density lipoprotein cholesterol, and FRS. There was a positive correlation between serum quinolinic acid levels and participants’ systolic and diastolic blood pressures.

Conclusions
Our findings showed that tryptophan metabolism via the kynurenine pathway was induced in smokers.
Artificial intelligence versus human researcher performance for systematic literature searches: a study focusing on the surgical management of base of thumb arthritis
Authors: Seth Ishith , Lim Bryan , Xie Yi , Ross Richard J. , Cuomo Roberto , Rozen Warren M. 
Published: January 2025

Aim: In the digital age, artificial intelligence (AI) platforms have gradually replaced traditional manual techniques for information retrieval. However, their effectiveness in conducting academic literature searches remains unclear, necessitating a comparative assessment. This study examined the efficacy of AI search engines (Elicit, Consensus, ChatGPT) vs. manual search for literature retrieval, focusing on the surgical management of trapeziometacarpal osteoarthritis.
Methods: The study was executed per the Cochrane Handbook for Systematic Reviews and PRISMA guidelines. AI platforms were given relevant keywords and prompts, while manual searches used PubMed, Cochrane CENTRAL, Web of Science, and Scopus databases from January 1901 to April 2024. The study focused on English-language randomized controlled trials (RCTs) comparing surgical management of trapeziometacarpal osteoarthritis (TMCJ OA). Two independent evaluators screened and extracted data from the studies. Primary outcomes involved the quality and relevancy of studies chosen by both search methods, evaluated by false positive rates and number of studies, including outcomes of interest.
Results: The manual search yielded the most results (6,018), followed by Elicit (4,980), Consensus (3,436), and ChatGPT (6). Elicit identified the highest number of RCTs (205) but also had the greatest false positive rate (94%). Ultimately, the manual search identified 23 suitable studies, Elicit found 10, Consensus found 9, and ChatGPT identified only 1. No additional studies were found by AI search engines that were not discovered in the manual search.
Conclusion: The findings highlight the potential advantages and drawbacks of AI search engines for literature searches. While Elicit was prone to error, Consensus and ChatGPT were less comprehensive. Significant enhancements in the precision and thoroughness of AI search engines are required before they can be effectively utilized in academia.
"for goddes sake kepe my writing secrete for it is my destruction": Strategies of Epistolary Secrecy in the Letters of Margaret Tudor, Queen of Scots (1489-1541)
Authors: Newsome-Chandler Helen 
Published: January 2025

This article offers a detailed analysis of the strategies of epistolary secrecy that Margaret Tudor, Queen of Scots, employed in her correspondence with Thomas Howard, Earl of Surrey, in autumn 1523. During this period, Margaret acted as a double agent: appearing to be a willing mediator of peace to the Scottish government, whilst simultaneously acting as a spy for England. This study investigates how Margaret established separate overt and covert channels of communication with Thomas Howard to maintain this dual identity and to protect herself in a challenging political situation. This analysis provides evidence for the use of multiple channels of communication as a method of epistolary secrecy, a strategy which has been seldom recorded in other studies of early modern letter-writing. Finally, this article challenges previous, highly-gendered ideas of female political activity which accused Margaret Tudor of being "inconstant" and "politically inept", to instead show that she was exercising excellent political and diplomatic strategy. This provides an important reassessment of the strategies that late medieval queens could employ to exert power and agency in high-risk diplomatic and political negotiations.
<em>Sibyl, Queen of Jerusalem 1186&ndash;1190</em>. By Helen J. Nicholson. New York: Routledge, 2022. ISBN 9781138636514. xiii + 203 pp. &pound;130.
Authors: Donnachie Stephen 
Published: January 2025

Sibyl, Queen of Jerusalem 1186–1190. By Helen J. Nicholson. New York: Routledge, 2022. ISBN 9781138636514. xiii + 203 pp. £130.