bluuebunny/crossref_metadata_2025_split huggingface dataset:
Global calibration method for non-overlapping cameras based on rigidly connected stereo targets
Authors: Zhu Zhenmin , Zheng Ying Qi , Li Wei , Zhang Jing , Zhao Yan , Wu Zi Wei 
Published: August 2022

In complex field of view (FOV) environments, a single camera’s FOV measurement range is limited and cannot cover the entire object under test for global calibration. Multiple cameras are used mostly for large FOV environment measurements, but the traditional one- and two-dimensional targets used for global calibration in large FOV environments are prone to overlapping FOV. Furthermore, other large-sized targets are difficult to produce and process, and the laser projection method and plane mirror calibration methods are easily affected by the outdoor environment. To solve this problem, a non-common FOV binocular calibration method based on rigidly connected stereo targets is proposed. The calibration process is as follows: First, the rigidly connected target, which is composed of two plane targets with a checkerboard, is placed in front of the two cameras, and the vision sensor captures the corresponding sub-target image; then, the target is moved multiple times, and the transformation relationship between multiple vision sensors is obtained according to the spatial constraint characteristics of the rigidly connected target. Hence, the method overcomes the limitation of the non-overlapping FOV calibration method that relies on large measuring instruments. The experimental results show that the RMS error of the 13 mm distance is 0.16 mm. The proposed method is effective, simpler to operate than other methods, and does not rely on the constraint of complex targets. More importantly, this measurement method solves the difficult problem of measurement in non-public FOV, meeting the requirements of large FOV measurement ranges.
Assessment of knowledge, attitude and practice towards ante natal exercise among pregnant women attending antenatal care at Health centers of Mekelle, Tigray Region, Ethiopia, 2020
Authors: Sitot Aregash , Workye Haile 
Published: August 2022

Background
If pregnant mothers have no medical or obstetrical complications, they are encouraged to maintain active lifestyles during their pregnancies. Benefits of exercise during pregnancy include; prevention of gestational diabetes, pre-eclampsia and reduced low back pain. Therefore this study is done to assess knowledge, attitude and practice towards antenatal exercise among pregnant women who are attending antenatal care at health centers of Mekelle, Tigray Region, Ethiopia.

Method
For this study cross-sectional study design was used. It was conducted from October 2019 up to January 2020 among 255 pregnant women who are attending antenatal care at selected health centers of Mekelle city. After the data were collected it was entered into epi-data 4.2.0 and was analyzed by using SPSS version 23.

Result
Among the study participants of pregnant women 51%, 56% and 16.6% had good knowledge, positive attitude and practice towards antenatal exercise respectively. Among those 38.8%, 45.9% and 49.8% were expressed as antenatal exercise can decrease back pain, prevents excessive weight gain and increase energy and stamina during pregnancy respectively. Among those who practiced antenatal exercise, 95% and 83.4% was practicing with frequency ≥ three times per week and ≥20 minutes of the duration of exercise per session respectively.

Discussion
Generally, this study showed that the level of knowledge, attitude and practice of pregnant mothers regarding antenatal exercise is poor. Therefore, health care providers who work on maternal health (Gynecologists, Midwives, Nurses, Health extension workers and other community workers) should provide counseling and health education on antenatal exercise.
The relationships of psychological capital and influence regulation with job satisfaction and job performance
Authors: Paliga Mateusz , Kożusznik Barbara , Pollak Anita , Sanecka Elżbieta 
Published: August 2022

Background and aimsThe individual difference predictors of positive work attitudes and behaviors have been widely investigated in the field of positive organizational scholarship. However, to date, integrating studies linking positive psychological resources, such as Psychological Capital and influence regulation, with positive organizational outcomes are still scarce. Thus, the main aim of the present study was to examine the relationships of Psychological Capital and influence regulation with job satisfaction and job performance both at the individual and team levels.MethodsWithin the cross-sectional multi-source research involving both team leaders and team members from 34 different teams, we examined the relationships of Psychological Capital and influence regulation with job satisfaction and job performance. The relationships of the study variables were based on the positive organizational behavior and the broaden-and-build theory of positive emotions, which suggest the positive relationships of distinct positive psychological resources with positive work outcomes. Accordingly, in addition to the widely accepted concept of Psychological Capital (PsyCap), we employed and analyzed the complimentary construct of influence regulation (i.e., the ability to intentionally share social influence with others in the workplace) both at the individual and group levels.ResultsThe results of hierarchical linear modeling with 304 individuals from 34 teams from a diverse sample of Polish employees indicated that team members’ PsyCap was positively linked to individual-level job satisfaction and two facets of job performance, i.e. creative performance and in-role performance. In contrast, no relationship was found between influence regulation and job satisfaction or job performance at both levels of analysis.ConclusionWith regard to positive interpersonal resources, the findings highlight the role of PsyCap in predicting job satisfaction and job performance and broaden the understanding of positivity in the workplace by introducing the construct of influence regulation. Also, based on the study results, managerial implications are discussed.
Early risk of acute myocardial infarction following hospitalization for severe influenza infection in the middle-aged population of Hong Kong
Authors: Cheng Ho Yu , Fung Erik , Choi Kai Chow , Zou Hui Jing , Chair Sek Ying 
Published: August 2022

Introduction
Despite evidence suggesting an association between influenza infection and increased risk of acute myocardial infarction (AMI) in the older adult population (aged 65 years or above), little is known about its near-term risks in middle-aged adults (aged 45 to 64 years). This study aims to estimate the risks of and association between severe influenza infection requiring hospitalization and subsequent AMI within 12 months in middle-aged adults.

Method
This is a retrospective case-control analysis of territorywide registry data of people aged 45 to 64 years admitting from up to 43 public hospitals in Hong Kong during a 20-year period from January 1997 to December 2017. The exposure was defined as severe influenza infection documented as the principal diagnosis using International Classification of Diseases codes and non-exposure as hospitalization for orthopedic surgery. Logistic regression was used to analyze the risk of subsequent hospitalization for AMI within 12 months following the exposure.

Results
Among 30,657 middle-aged adults with an indexed hospitalization, 8,840 (28.8%) had an influenza-associated hospitalization. 81 (0.92%) were subsequently rehospitalized with AMI within 12 months after the indexed hospitalization. Compared with the control group, the risk of subsequent hospitalization for AMI was significantly increased (odds ratio [OR]: 2.54, 95% confidence interval [CI]: 1.64–3.92, p<0.001). The association remained significant even after adjusting for potential confounders (adjusted OR: 1.81, 95% CI: 1.11–2.95, p = 0.02). Patients with a history of hypertension, but not those with diabetes mellitus, dyslipidemia or atrial fibrillation/flutter, were at increased risk (adjusted OR: 5.01, 95% CI: 2.93–8.56, p<0.001).

Conclusion
Subsequent hospitalization for AMI within 12 months following an indexed respiratory hospitalization for severe influenza increased nearly two-fold compared with the non-cardiopulmonary, non-exposure control. Recommendation of influenza vaccination extending to middle-aged adult population may be justified for the small but significant increased near-term risk of AMI.
Imaging characteristics and diagnostic accuracy of FDG-PET/CT, contrast enhanced CT and combined imaging in patients with suspected mycotic or inflammatory abdominal aortic aneurysms
Authors: Husmann Lars , Huellner Martin W. , Gruenig Hannes , Ledergerber Bruno , Messerli Michael , Mestres Carlos-A. , Rancic Zoran , Hasse Barbara 
Published: August 2022

Purpose
To evaluate the diagnostic accuracy and specific imaging characteristics of positron emission tomography/computed tomography with 18F-fluorodeoxyglucose (PET/CT), contrast enhanced CT (CE-CT), and a combined imaging approach (CE-PET/CT) in patients with infectious/mycotic (MAA), inflammatory (IAA), and non-infected, non-inflammatory abdominal aortic aneurysm (AAA).

Materials and methods
In this single-center retrospective cohort study, all imaging data sets of 29 consecutive patients with clinically suspected MAA or IAA were anonymised with different, reshuffled identification numbers and retrospectively and independently analysed by two experienced readers, blinded to all clinical patient data. Readers determined the presence or absence and MAA, IAA and AAA and of predefined imaging characteristics (e.g. fluid collection), and measured metabolic activity and wall thickness of all aneurysms. A multidisciplinary team of specialists served as standard of reference and re-evaluated every clinical case, considering all clinical, laboratory, microbiological, histopathological and imaging results, including all follow-up examinations.

Results
Diagnostic accuracy was higher in PET/CT as compared to CE-CT in differentiating AAA from MAA and IAA: area under the receiver operating characteristic curve (AUC-ROC) 0.81 (95% confidence intervals 0.69–0.92) and 0.63 (0.52–0.74) (P = 0.027). Specific imaging characteristics were significantly associated with different types of aneurysms (P<0.05), i.e. very high metabolic activity and dorsal sparing of metabolic activity in PET/CT and wall thickening in CE-CT were indicative for IAA; fat stranding and fluid collections in CE-CT were associated with MAA; while low metabolic acitivity and absence of wall thickening in PET/CT, and less fat stranding and absence of wall thickening in CE-CT were indicative for non-infected, non-inflammatory AAA.

Conclusion
Specific imaging characteristics of PET/CT and CE-CT may be helpful in differentiating between MAA, IAA, and non-infected, non-inflammatory AAA.
Risk factors of SARS-CoV-2 infection in cancer patients pre- and post-vaccination
Authors: Alsagaby Suliman A. , Alharbi Naif Khalaf , Alhumaydhi Fahad A. , Alsubaie Faisal , Bosaeed Mohammad , Aljouie Abdulrhman , Assiri Abdullah M. , Alshammari Kanan 
Published: August 2022

Background
Severe complications from COVID-19 and poor responses to SARS-CoV-2 vaccination were commonly reported in cancer patients compared to those without cancer. Therefore, the identification of predisposing factors to SARS-CoV-2 infection in cancer patients would assist in the prevention of COVID-19 and improve vaccination strategies. The literature lacks reports on this topic from the Kingdom of Saudi Arabia (KSA). Therefore, we studied clinical and laboratory data of 139 cancer patients from King Abdulaziz Medical City, Riyadh, KSA.

Methods
The cancer patients fall into three categories; (i) uninfected with SARS-CoV-2 pre-vaccination and remained uninfected post-vaccination (control group; n = 114; 81%), (ii) pre-vaccination infected group (n = 16; 11%), or (iii) post-vaccination infected group (n = 9; 6%). Next, the clinical and lab data of the three groups of patients were investigated.

Results
Comorbidity factors like diabetes and hemodialysis were associated with the risk of infection in cancer patients before the vaccination (p<0.05). In contrast to breast cancer, papillary thyroid cancer was more prevalent in the infected patients pre- and post-vaccination (p<0.05). Pre-vaccination infected group had earlier cancer stages compared with the control group (p = 0.01). On the other hand, combined therapy was less commonly administrated to the infected groups versus the control group (p<0.05). Neutrophil to lymphocyte ratio was lower in the post-vaccination infected group compared to the control group (p = 0.01).

Conclusion
Collectively, this is the first study from KSA to report potential risk factors of SARS-CoV-2 infection in cancer patients pre- and post-vaccination. Further investigations on these risk factors in a larger cohort are worthwhile to draw a definitive conclusion about their roles in predisposing cancer patients to the infection.
External quality assessment for detection of methylated Syndecan 2 (SDC2) in China
Authors: Fan Xiaoyu , Shi Chunli , Wei Meng , Xiao Yanqun , Wang Xueliang 
Published: August 2022

Abstract

Objectives
Detection of Syndecan 2 (SDC2) methylation in stool DNA is a novel method for the auxiliary diagnosis of early colorectal cancer (CRC). Currently, this method has been widely applied; however, its accuracy and reliability have not been determined. The objective of this pioneering study was to evaluate the performance of clinical laboratories in China for their ability to detect SDC2 methylation from stool DNA.

Methods
We generated a sample panel consisting of clinical and cell samples. The clinical samples were stool specimens from patients with or without CRC, including four positives (prepared by serial dilution from one stool specimen), one negative and one interferential sample. Two cell samples, with positive or negative methylated SDC2, were used as controls. The panel was distributed to 32 clinical laboratories for analysis of SDC2 methylation, and the results were compared and scored.

Results
The sample panel was compatible with commercially available assays and it showed appropriate stability to be an external quality assessment material. There were four false results; one hospital laboratory and one commercial diagnostic laboratory had a false-positive and a false-negative result, respectively, and one commercial diagnostic laboratory had both a false-positive and false-negative result. Among the 32 participating laboratories, 29 (90.62%) obtained an acceptable or better performance score, while 3 (9.38%) laboratories required improvement.

Conclusions
Our results demonstrate that the detection of SDC2 methylation from stool DNA was satisfactory in China. Additionally, the importance of external quality assessment was highlighted for monitoring the performance of clinical laboratories.
A remark on two notions of flatness for sets in the Euclidean space
Authors: Violo Ivan Yuri 
Published: August 2022

Abstract
In this note we compare two ways of measuring the n-dimensional “flatness” of a set

S
⊂

ℝ
d

{S\subset\mathbb{R}^{d}}

, where

n
∈
ℕ

{n\in\mathbb{N}}

and

d
>
n

{d>n}

. The first is to consider the classical Reifenberg-flat numbers

α
⁢

(
x
,
r
)

{\alpha(x,r)}

(

x
∈
S

{x\in S}

,

r
>
0

{r>0}

), which measure the minimal scaling-invariant Hausdorff distances in

B
r

⁢

(
x
)

{B_{r}(x)}

between S and n-dimensional affine subspaces of

ℝ
d

{\mathbb{R}^{d}}

. The second is an “intrinsic” approach in which we view the same set S as a metric space (endowed with the induced Euclidean distance). Then we consider numbers

𝖺
⁢

(
x
,
r
)

{{\mathsf{a}}(x,r)}

that are the scaling-invariant Gromov–Hausdorff distances between balls centered at x of radius r in S and the n-dimensional Euclidean ball of the same radius.
As main result of our analysis we make rigorous a phenomenon, first noted by David and Toro, for which the numbers

𝖺
⁢

(
x
,
r
)

{{\mathsf{a}}(x,r)}

behaves as the square of the numbers

α
⁢

(
x
,
r
)

{\alpha(x,r)}

. Moreover, we show how this result finds application in extending the Cheeger–Colding intrinsic-Reifenberg theorem to the biLipschitz case.
As a by-product of our arguments, we deduce analogous results also for the Jones’ numbers β (i.e. the one-sided version of the numbers α).
Hydrocracking of vacuum residue in a slurry phase reactor: effect of reaction temperature and properties of feedstock
Authors: Li Wei , Wang Mingfeng , Huo Pengju , Huang Chuanfeng , Wang Ningbo , Yang Tianhua , Yang Tao , Zhu Yonghong , Yang Cheng 
Published: August 2022

Abstract
The slurry phase hydrocracking was carried out in a 150 kg/d pilot plant with a change of reaction temperature and different feedstocks including vacuum residue (VR), thermal cracking residue (TCR), 58% VR + 42% DOA (VRD) and 32% VR + 27% DOA + 41% TCR (VRDT). The results demonstrated that the conversions of residue and asphaltene, and hydrogen consumption had a linear relationship with the increment of reaction temperature. The TCR, VRD and VRDT with high content of asphaltene had the characteristic of higher asphaltene conversion and coke yield, but the coke yield was still low, and less than 1.3%. In addition, the removal rate of sulfur was much higher than that of nitrogen, while that of nickel and vanadium reach above 77 and 88%, respectively. The light liquid fraction product could further transform into high value-added chemical materials or clean transport fuel, and the heavy liquid fraction product could utilized as a very good raw material for high quality products as needle coke and carbon-based materials.
M-lump waves and their interactions with multi-soliton solutions for the (3 + 1)-dimensional Jimbo–Miwa equation
Authors: Ismael Hajar Farhan , El-Ganaini Shoukry , Bulut Hasan 
Published: August 2022

Abstract
In this work, the dynamical behaviors of the Jimbo–Miwa equation that describes certain interesting (3 + 1)-dimensional waves in physics but does not pass any of the conventional integrability tests are studied. One-, two-, and three-M-lump waves are constructed successfully. Interactions between one-M-lump and one-soliton wave, between one-M-lump and two-soliton wave as well as between two-M-lump and one-soliton solution are reported. Also, complex multi-soliton, solutions are offered. The simplified Hirota’s method and a long-wave method are used to construct these types of solutions. The velocity of a one-M-lump wave is studied. Straight Lines of travel for M-lump waves are also reported. To our knowledge, all gained solutions in this research paper are novel and not reported beforehand. Moreover, the gained solutions are presented graphically in three dimensions to better understand the physical phenomena of the suggested equation.
Certain inverse uniqueness from the quotients of scattering coefficients
Authors: Chen Lung-Hui 
Published: August 2022

Abstract
The study considers the inverse problem
in the scattering theory in one-dimensional Schrödinger equation. The corresponding scattering matrix consists of

2
×
2

{2\times 2}

entries of meromorphic functions. We are interested to recover the potential source from certain information of the quotients of scattering coefficients that is known a priori.
Relationship between prolactin level and puberty in girls with early breast development
Authors: Lee Yun Jeong , Lee Seong Yong 
Published: August 2022

Abstract

Objectives
Prolactin (PRL) stimulates the mammary glands development; however, it also inhibits gonadotropin-releasing hormone (GnRH) secretion. We evaluated the relationship between PRL levels and puberty in girls with precocious breast development.

Methods
This study included 244 girls with breast development < 8 years of age. Patients were categorized as central precocious puberty (CPP) [peak luteinizing hormone (LH) levels ≥ 5 IU/L after GnRH stimulation] versus non-CPP (NPP) group. High PRL was defined as serum PRL > 17.9 ng/mL.

Results
High PRL was more common in NPP than in CPP group (17.6 vs. 8.1%, p=0.025), although mean PRL levels did not differ. In NPP group, the high PRL group had lower peak LH/follicle-stimulating hormone (FSH) ratio, and later LH peak time after GnRH stimulation than normal PRL group (all p < 0.05). PRL levels of the subgroups according to the peak LH time (15, 30, 45, 60, and 90 min after GnRH stimulation) were different in NPP group, but not in CPP group. PRL levels tended to be higher as the peak LH time was delayed. High PRL was associated with decreased odds for CPP (OR=0.42, p=0.043).

Conclusions
Girls with NPP showed higher proportion of high PRL than CPP group. High PRL group showed more features of prepubertal response in NPP group, and associated with decreased odds for CPP, suggesting the possibility of PRL role on breast development while suppressing hypothalamic–pituitary–gonadal axis activation in NPP girls.
A new family of two-variable polynomials based on hermite polynomials
Authors: Erkuş-Duman Esra , Ciftci Hakan 
Published: August 2022

Abstract
The aim of this paper is to introduce a new two-variable polynomials defined via Hermite polynomials. In order to construct some fundamental properties of these polynomials, we first derive a generating function relation. By using definition and this generating relation, we arrive at several recurrence relations, an integral representation, some implicit summation formulae, a symmetry identity for these new two-variable polynomials. Furthermore, we obtain some results which give various classes of multilinear and multilateral generating functions. Then, some special cases are presented. Finally, we also give a general class of these new polynomials and prove explicit closed-form formulae of them.
Decreasing property and complete monotonicity of two functions constituted via three derivatives of a function involving trigamma function
Authors: Qi Feng 
Published: August 2022

Abstract
With the aid of convolution theorem of the Laplace transforms, a monotonicity rule for the ratio of two Laplace transforms, Bernstein’s theorem for completely monotonic functions, and other analytic techniques, the author presents decreasing property of a ratio constituted via three derivatives of a sum involving trigamma function and discovers necessary and sufficient conditions for a function constituted via three derivatives of a function involving trigamma function to be completely monotonic.
Investigation of an implicit Hadamard fractional differential equation with Riemann-Stieltjes integral boundary condition
Authors: Abbas Mohamed I. , Fečkan Michal 
Published: August 2022

Abstract
Anew class of implicit Hadamard fractional differential equations with Riemann-Stieltjes integral boundary conditions is studied in this research paper. The existence and uniqueness results of the aforesaid problem are investigated using Schauder’s fixed point theorem and Banach’s contraction mapping principle. A simulative example is given to highlight the acquired outcomes.
Weighted composition operators from the Besov space into nth weighted type spaces
Authors: Zhu Xiangling , Abbasi Ebrahim , Molaei Daryoush 
Published: August 2022

Abstract
Let φ be an analytic self-map of the open unit disk 𝔻 in the complex plane ℂ and u be an analytic function on 𝔻. The weighted composition operator is defined on the space H(𝔻) of analytic functions on 𝔻 by

u

C
φ

f
=
u
⋅

(

f
∘
φ

)

,

f
∈
H

(
D
)

.

$$u{C_\varphi }f = u \cdot \left( {f \circ \varphi } \right),\quad f \in H\left(D\right).$$

The boundedness and the compactness of weighted composition operators from the Besov space into nth weighted type spaces are given in this work.