bluuebunny/crossref_metadata_2025_split huggingface dataset:
Prevalence and factors associated with chronic school absenteeism among 207,107 in-school adolescents: Findings from cross-sectional studies in 71 low-middle and high-income countries
Authors: Rahman Md. Ashfikur , Renzaho Andre M. N. , Kundu Satyajit , Awal Md. Abdul , Ashikuzzaman Md. , Fan Lijun , Ahinkorah Bright Opoku , Okyere Joshua , Kamara Joseph Kihika , Mahumud Rashidul Alam 
Published: May 2023

Background
Despite the negative impact of chronic school absenteeism on the psychological and physical health of adolescents, data on the burden of adolescent chronic school absenteeism (ACSA) and interventions and programs to address it are lacking. We estimated the global, regional and national level prevalence of ACSA and its correlation with violence and unintentional injury, psychosocial, protective, lifestyle, and food security-related factors among in-school adolescents across low and middle-income, and high-income countries (LMICs–HICs).

Objectives
This study aimed to estimate the prevalence of chronic school absenteeism (CSA) as well as to determine its associated factors among in-school adolescents across 71 low-middle and high-income countries.

Methods
We used data from the most recent Global School-based Student Health Survey of 207,107 in-school adolescents aged 11–17 years in 71 LMICs-HICs countries across six WHO regions. We estimated the weighted prevalence of ACSA from national, regional and global perspectives. Multiple binary logistic regression analyses were used to estimate the adjusted effect of independent factors on ACSA.

Results
The overall population-weighted prevalence of CSA was 11·43% (95% confidence interval, CI: 11·29–11·57). Higher likelihood of CSA was associated with severe food insecurity, peer victimisation, loneliness, high level of anxiety, physically attack, physical fighting, serious injury, poor peer support, not having close friends, lack of parental support, being obese, and high levels of sedentary behaviours. Lower likelihood of CSA was associated with being female (odds ratio, OR = 0·76, 95% CI: 0·74–0·78).

Conclusion
Our findings indicate that a combination of different socio-economic factors, peer conflict and injury factors, factors exacerbate CSA among adolescents. Interventions should be designed to focus on these risk factors and should consider the diverse cultural and socioeconomic contexts.
Diagnostic efficacy of the optical flow ratio in patients with coronary heart disease: A meta-analysis
Authors: Chen Huaigang , Li Bin , Xiao Yanyan , Wang Hong , Kuang Maobin , Sun Hanjin , Yang Liu 
Published: May 2023

Background
Coronary atherosclerotic heart disease (CAD) remains one of the most serious diseases threatening human health and life. PCI (Percutaneous Coronary Intervention) is the most common treatment for patients with CAD. A rigorous and comprehensive assessment of coronary artery lesions is now needed before PCI, however, there is no consensus on how best evaluate the combination of various intracavitary imaging techniques. By merging the benefits of physiological assessment and high-definition imaging, the optical flow ratio (OFR) has emerged as a novel technology with promising prospects for application.

Methods
A systematic review of the literature was conducted. Studies that met the criteria of the meta-analysis were considered to assess OFR and FFR (fractional flow reserve). And the summary values of sensitivity and specificity of diagnostic tests and summary receiver operating curves (SROC) were calculated.

Results
A total of 5 studies were included. The sensitivity and specificity of OFR in the diagnosis of coronary artery lesions were 0.83 (95% CI: 0.75–0.88) and 0.94 (95% CI: 0.91–0.96), respectively; the positive likelihood ratio and the negative likelihood ratio were 14 (95% CI: 9.3, 21.3) and 0.18 (95% CI:0.13, 0.27), respectively. OFR showed good correlation and consistency with FFR.

Conclusion
The new OFR technique achieve an encouraging diagnostic performance, which also showed good correlation and consistency with FFR.
Influences of age and gender on operative risks following carotid endarterectomy: A systematic review and meta-analysis
Authors: Nantakool Sothida , Chuatrakoon Busaba , Orrapin Saritphat , Leung Rachel , Howard Dominic P. J. , Rerkasem Amaraporn , Derraik José G. B. , Rerkasem Kittipan 
Published: May 2023

Objectives
This review aims to undertake a comprehensive review of the literature and investigate associations of age and gender on 30 days post carotid endarterectomy (CEA) and up to 5 years post CEA stroke, death, and combined stroke and death.

Design
A systematic review and meta-analysis.

Methods
Three main electronic databases including the Cochrane Library, MEDLINE, and Embase were searched from their inception to July 2022. Studies examining operative risks (i.e., stroke, death, and combined stroke and death following CEA) linked to age or gender were included. Two independent reviewers were responsible for study selection, quality assessment, and data extraction. Odds ratio (OR) and 95% confidence interval (CI) of all outcomes were calculated.

Results
44609 studies were retrieved from the search. There were 127 eligible studies (80 studies of age, 72 studies of gender, 25 studies of age and gender) for pooling in the meta-analysis. With regards to stroke and death risks within 30 days post CEA; patients aged ≥75 had higher death (OR 1.38; 95% CI 1.10–1.75) than patients aged <75. Patients aged ≥80 had higher stroke risk (OR 1.17; 95% CI 1.07–1.27) and death risk (OR 1.85; 95% CI 1.48–2.30) particular in asymptomatic patients (OR 2.4; 95% CI 1.56–3.81). Pooled effect estimates by gender, at 30 days post CEA, showed that female was associated with increased risk of stroke (OR 1.28; 95% CI 1.16–1.40), with more risk in asymptomatic female patients (OR 1.51; 95% CI 1.14–1.99).

Conclusions
This meta-analysis highlights that older people is associated with increased stroke risk, particularly asymptomatic octogenarians who had higher likelihood of death within 30 days post CEA. In addition, female especially those with asymptomatic carotid stenosis had greater likelihood of stroke within 30 days post CEA surgery.
Anemia and associated factors among internally displaced children at Debark refugee camp, North Gondar, Northwest Ethiopia
Authors: Teketelew Bisrat Birke , Bayleyegn Biruk , Berta Dereje Mengesha , Enawgaw Bamlaku , Woldu Berhanu 
Published: May 2023

BackgroundChildren in refugee camps, due to their living conditions, are the most vulnerable groups to suffer from anemia. Nutritional deficiencies, especially iron deficiency is the most common causes of anemia. However, there is limited information on the prevalence and associated factors of anemia in Ethiopia. Hence, this study aimed to assess the prevalence and associated factors of anemia among internally displaced children at Debark refugee camp, Northwest Ethiopia.MethodsA cross-sectional study was conducted on 354 internally displaced children, at Debark refugee camp from March to May 2022. A systematic sampling technique was employed. The socio demographic characteristics were collected by using structured questionnaire via face-to-face interview with the caregivers. The hemoglobin level was determined using HemoCue301+. Form anemic children, venous blood sample was collected for iron profile analysis. Parasitological and anthropometric measurements were also done. The data were entered using Epi-data version 4.6.0.6 and exported to STATA version 14 for analysis. Bi-variable and multivariable binary logistic regression analysis were done. Both crude odds ratio and adjusted odds ratio with the corresponding 95% confidence interval were calculated to measure the strength of association. P-Value < 0.05 was considered as statistically significant association.ResultsFrom the total of 354 children included in this study, more than half (54.8%) of them were male. The median age of children was 7 years with interquartile range of (4–10) years. The total prevalence of anemia in this study was 33.62% (95% CI:28.7, 38.7). Moderate type anemia was predominant in this study. From anemic children 30 (25.2%) had iron deficiency anemia. In this study, low dietary diversity (AOR = 4.9; 95% CI: 2.0, 11.7), duration in the camp more than six months (AOR = 4.2; 95% CI:1.9, 9.4), presence of diarrhea (AOR = 2.7; 95% CI:1.3, 5.7), fever (AOR = 3.4; 95% CI:1.6, 7.1), and wasting (AOR = 3.6; 95% CI:1.3, 10.3) were significantly associated with the prevalence of anemia.ConclusionAnemia was moderate public health problem in the current study. Focused policies and strategies towards to internally displaced children should be designed to reduce anemia, by preventing the significant risk factors associated with anemia.
Ka/C dual frequency ranging system for ocean altimetry satellite and analysis of ionospheric error
Authors: Li Nan , Zhai Zhenhe , Ma Jian , Guan Bin , Cui Wenhui , Li Duan 
Published: May 2023

Abstract
In view of the future development trend of ocean altimetry satellites, the design idea of Ka/C dual frequency combination system is proposed, that is, the mode of using an altimeter antenna to contain Ka and C frequencies (35.7 and 5.3 GHz, respectively) for combined ranging. First, the random error model of altimeter measuring the distance from the altimeter phase center to the sea surface is given, and the analysis shows that the ionospheric correction error is one of the important factors. Second, the calculation of typical ionospheric parameters shows that the influence of ionospheric higher order terms on altimeter ranging is below the mm level, and its influence can be ignored. The rigorous expression for the first-order and second-order term correction of ionosphere error are given, respectively, by using dual frequency and three frequencies. The computational experiment of Jason-2 and SARAL satellite show that the maximum magnitude of ionospheric error correction in Ku band can reach 11 cm, while the maximum magnitude of ionospheric error correction in Ka band can reach 2 cm. For high-precision applications, ionospheric corrections must be made for single Ka frequency. After Ka/C dual frequency combination is adopted, error correction can be directly conducted without global ionospheric map (GIM) model, and its accuracy will be further improved than GIM model. Under 1 Hz sampling conditions, the ionospheric correction accuracy of Ka/C combination can be better than 2.5 mm, basically eliminating the influence of the ionosphere, and the total ranging accuracy can reach 3.5 cm considering the propagation error.
On sisters and zussen: integrating semasiological and onomasiological perspectives on the use of English person-reference nouns in Belgian-Dutch teenage chat messages
Authors: Zenner Eline , Hilte Lisa , Backus Ad , Vandekerckhove Reinhild 
Published: May 2023

Abstract
This paper targets the division of labor between borrowed English forms and heritage alternatives in Belgian-Dutch youth language. Through lexical semantic analysis of a youth-language corpus containing over 450,000 private instant messages, the choice for English or Dutch person-reference nouns (e.g. Eng. girlfriend, loser, sister; Du. vriendin, sukkel, zus) is studied at three levels of semasiological granularity. First, at the level of the semantic field as a whole, Dutch appears to have the strongest foothold, accounting for over 75 % of the types and over 85 % of the tokens referencing people. Second, coarse-grained semantic-feature annotation reveals that Dutch retains its dominant position in all identified semantic subcategories of person-reference nouns although some hubs of English are also attested. Third, an in-depth analysis of the selection between the near-synonyms sis, sister, zus, zusje and zuster in the corpus indicates socio-pragmatic differentiation between the English and Dutch terms, English being used more for (affective) address and for friends, Dutch being reserved for reference and for proper kin. Overall, our study indicates the potential of a three-tiered onomasiological approach: the results of the three case studies show both similarities, in the systematically stronger foothold of Dutch at all levels of analysis, and differences, in the semantic specialization for English progressively uncovered from the first to the third sub-study.
First language as a determinant of implicit and explicit language attitudes: Catalan/Spanish bilinguals’ general language attitudes and response to language choice in a COVID-19 vaccination advertisement
Authors: van Hooft Andreu , van Meurs Frank , van de Wouw Mylène , van Maren Díaz Pablo 
Published: May 2023

Abstract
This study aims to contribute new insight into the study of languages in contact by comparing the implicit and explicit general language attitudes of bilingual individuals towards their first and second language in health communication in a multilingual society, through a combination of survey and experimental methods. We investigated to what extent 358 L1 Catalan and 338 L1 Spanish speakers in Catalonia differed in their general attitudes to Catalan and Spanish (explicit language attitudes) and in their reactions to the use of these languages in health advertising, specifically in an advertisement promoting COVID-19 vaccination (implicit language attitudes). This is the first study of its kind in a European multilingual context. Based on accommodation theory and theory related to first-language preference, participants were expected to prefer their L1 and the L1 advertisement. Findings offer support for first-language preference in terms of general language attitudes. However, the language of the ad and participants’ first language had little impact on ad-related response. There were no effects of language on attitude towards the ad, attitude towards vaccination and vaccination intention, but the L1 Catalan participants felt the Catalan ad had more appropriate language and expressed more cultural respect than the Spanish ad. Thus, in the current study, explicit language attitudes revealed first-language preference, while implicit language attitudes did so to a limited extent.
Fourier integral operators with forbidden symbols on the Besov spaces
Authors: Ruan Jianmiao , Zhu Xiangrong 
Published: May 2023

Abstract
In this note, we consider the Fourier integral operator

T

ϕ
,
a

⁢
f
⁢

(
x
)

=

∫

R
n

e

i
⁢
ϕ
⁢

(
x
,
ξ
)

⁢
a
⁢

(
x
,
ξ
)

⁢

f
^

⁢

(
ξ
)

⁢

d
ξ

T_{\phi,a}f(x)=\int_{\mathbb{R}^{n}}e^{i\phi(x,\xi)}a(x,\xi)\hat{f}(\xi)\,d\xi

with 𝑎 in the forbidden Hörmander class

S

ρ
,
1

m

S^{m}_{\rho,\smash{1}}

and

ϕ
∈

Φ
2

\phi\in\Phi^{2}

satisfying the strong non-degeneracy condition.
For

0
≤
ρ
≤
1

0\leq\rho\leq 1

, set

m
⁢

(
n
,
ρ
,
p
)

=

−

(

n
−
ρ

)

⁢

(

1
2

−

1
p

)

+

n
p

⁢

(

ρ
−
1

)

.

m(n,\rho,p)=-(n-\rho)\biggl{(}\frac{1}{2}-\frac{1}{p}\biggr{)}+\frac{n}{p}(\rho-1).

When

2
≤
p
≤
∞

2\leq p\leq\infty

,

1
≤
q
≤
∞

1\leq q\leq\infty

and

s
>

m
−

m
⁢

(
n
,
ρ
,
p
)

s>m-m(n,\rho,p)

, we show that

T

ϕ
,
a

T_{\phi,a}

is bounded from the Besov space

B

p
,
q

s

B_{p,q}^{s}

to

B

p
,
q

s
−
m

+

m
⁢

(
n
,
ρ
,
p
)

B_{p,q}^{s-m+\smash{m(n,\rho,p)}}

.
This result is a generalization of some theorems proved by Stein, Meyer, Runst and Bourdaud for the pseudo-differential operator

T
a

T_{a}

with

a
∈

S

1
,
1

m

a\in S^{m}_{1,1}

, and indices 𝑠 and

m
⁢

(
n
,
ρ
,
p
)

m(n,\rho,p)

are sharp in some cases.
Los límites de la alegoría del auto sacramental: comparación de dos controversias barrocas en Quevedo y Calderón
Authors: Ehrlicher Hanno 
Published: May 2023

Resumen
En el presente artículo se estudian dos casos de alegorizaciones problemáticas en autos sacramentales para compararlos e insertarlos en un horizonte histórico más amplio. El primero surgió en la disputa desatada entre Francisco de Quevedo y Juan Pérez de Montalbán a raíz de la publicación de la miscelánea de este último titulada Para todos, la cual incluía también dos autos sacramentales que Quevedo consideró poco ortodoxos. El segundo caso fue el concepto alegórico que presentó Calderón de la Barca en el auto sacramental Las órdenes militares y que tuvo como consecuencia una denuncia anónima al autor y la consiguiente condena inquisitorial. Los dos casos presuponen, aunque de forma muy desigual, una conversión medial: de drama escenificado a texto impreso. Ambos, cotejados, muestran la complejidad del horizonte normativo en el que se movía el arte alegórico en el Barroco español.
The impact of abdominal enhancement techniques on L1 Spanish, Japanese and Mandarin speakers’ English pronunciation
Authors: Yeldham Michael 
Published: May 2023

Abstract
Research by this author found abdominal enhancement techniques can address difficulties in Mandarin and Cantonese speakers’ English pronunciation by helping them: (1) maintain long vowel/diphthong sounds for their required duration; and (2) adequately voice fricative consonants. This current study aimed to further understand the impact of these techniques, chiefly on learners from other L1s who also characteristically find these areas of pronunciation problematic. Consequently, I charted the progress of a Spanish speaker and a Japanese speaker as they were taught the techniques in an English pronunciation course. A cohort of Mandarin speakers from the same course was additionally examined. This was partly for comparability purposes with the Spanish and Japanese speakers, but also because some new areas of learner response to the techniques were examined in the study that had not previously been examined for Mandarin speakers. Following the instruction, I was also able to examine the Spanish and Mandarin speakers one year later to check for further progress. The study found the learners from the three L1s responded to the techniques in different ways, and often for apparently different reasons. Consequently, tentative theoretical claims regarding the techniques’ impact on such learners were developed, along with preliminary instructional guidelines.
On the converse of Gaschütz’ complement theorem
Authors: Sambale Benjamin 
Published: May 2023

Abstract
Let 𝑁 be a normal subgroup of a finite group 𝐺.
Let

N
≤
H
≤
G

N\leq H\leq G

such that 𝑁 has a complement in 𝐻 and

(

|
N
|

,

|
G
:
H
|

)

=
1

(\lvert N\rvert,\lvert G:H\rvert)=1

.
If 𝑁 is abelian, a theorem of Gaschütz asserts that 𝑁 has a complement in 𝐺 as well.
Brandis has asked whether the commutativity of 𝑁 can be replaced by some weaker property.
We prove that 𝑁 has a complement in 𝐺 whenever all Sylow subgroups of 𝑁 are abelian.
On the other hand, we construct counterexamples if

Z
⁢

(
N
)

∩

N
′

≠
1

\mathrm{Z}(N)\cap N^{\prime}\neq 1

.
For metabelian groups 𝑁, the condition

Z
⁢

(
N
)

∩

N
′

=
1

\mathrm{Z}(N)\cap N^{\prime}=1

implies the existence of complements.
Finally, if 𝑁 is perfect and centerless, then Gaschütz’ theorem holds for 𝑁 if and only if

Inn
⁢

(
N
)

\mathrm{Inn}(N)

has a complement in

Aut
⁢

(
N
)

\mathrm{Aut}(N)

.
Translating the applied model of deliberate imagery use to esports
Authors: Moritz Sandra Elaine 
Published: May 2023

Abstract
This article presents the Applied Model of Deliberate Imagery Use for Esports. The model is a translation from the Applied Model of Deliberate Imagery Use for Sport, Dance, Exercise and Rehabilitation (Cumming, J., & Williams, S. E. (2013). Introducing the revised applied model of deliberate imagery use for sport, dance, exercise, and rehabilitation. Movement & Sport Sciences, 82, 69–81 Martin, K. A., Moritz, S. E., & Hall, C. R. (1999). Imagery use in sport: A literature review and applied model. The Sport Psychologist, 13, 245–268). Each component of the model is described with examples relevant to esports. How the model can be used for imagery intervention and application, and suggestions for future research are also included.
Multimode hybrid gold-silicon nanoantennas for tailored nanoscale optical confinement
Authors: McPolin Cillian P. T. , Vila Yago N. , Krasavin Alexey V. , Llorca Jordi , Zayats Anatoly V. 
Published: May 2023

Abstract
High-index dielectric nanoantennas, which provide an interplay between electric and magnetic modes, have been widely used as building blocks for a variety of devices and metasurfaces, both in linear and nonlinear regimes. Here, we investigate hybrid metal-semiconductor nanoantennas, consisting of a multimode silicon nanopillar core coated with a gold layer, that offer an enhanced degree of control over the mode selection and confinement, and emission of light on the nanoscale exploiting high-order electric and magnetic resonances. Cathodoluminescence spectra revealed a multitude of resonant modes supported by the nanoantennas due to hybridization of the Mie resonances of the core and the plasmonic resonances of the shell. Eigenmode analysis revealed the modes that exhibit enhanced field localization at the gold interface, together with high confinement within the nanopillar volume. Consequently, this architecture provides a flexible means of engineering nanoscale components with tailored optical modes and field confinement for a plethora of applications, including sensing, hot-electron photodetection and nanophotonics with cylindrical vector beams.
The Legal, the Digital, and the Global Production of Space
Authors: Nicolini Matteo 
Published: May 2023

Abstract
The essay stages the law at the intersections between the humanities, technology, and the production of digital space. Interactions like these are relevant in the present age, where humankind is outcompeting natural resources and changing the earth. The Anthropocene is an epoch of environmental crisis; despite this, we turn such a crisis into a process of sublimation servient to the control of the earth. Blurring the divide between the digital and the human is functional to such a process. The strategic use of the law makes climate-change policies compatible with global markets. Assuming that manufacturing digital spaces is useful to this end, the essay focuses on multimedia games. Blending real-word performances with internet- and media-related contents, they are functional to sublimation, convincing us that we can tackle climate change without rearranging our economic paradigms.
Somatic Jurisprudence: Re-Drawing the Boundaries of the Human Body
Authors: Vagias Karavas  
Published: May 2023

Abstract
Based on adecision of the German Federal Supreme Court on the qualification of the destruction of cryopreserved sperm as bodily injury, my contribution explores the question of how law in the age of biomedicine redefines the boundaries of the human body against the background of its fragmentation and genotyping. To cope with the complexity of these processes, law makes use of both old and new techniques, thus proving to be the first technology of life ever.
New Materialisms in Law. A Plea for a Contemporary Ontology of Intellectual Property Law
Authors: Haux Dario Henri 
Published: May 2023

Abstract
New Materialism examines the role of subjects and objects in an environment shaped by new technologies. Based on these observations and considerations, the aim was to develop a new conception of materiality in the dynamic interplay of signifying processes and material structures. In a twenty-first-century world, where the points of interaction between humans and modern technological devices are steadily increasing, this approach becomes even more relevant. From a legal perspective, however, it becomes clear that this interplay between humans and processes has only been inadequately traced so far. In order to redress this dissatisfying situation, what is needed is a contemporary law that not only recognizes new subjects as such, but also understands new processes and roles. The aim of the present paper is thus to trace these processes between subjects and objects. In a second step, the aim is to build on the theory of New Materialism to make these insights workable for intellectual property law.