bluuebunny/crossref_metadata_2025 huggingface dataset:
The sequence of algebraic problem-solving paths: Evidence from structure sense of Indonesian student
Authors: Junarti  , Zainudin M. , Utami Anita Dewi
Published: January 2023

The algebraic structure is one of the axiomatic mathematical materials that consists of definitions and theorems. Learning algebraic structure will facilitate the development of logical reasoning, hence facilitating the study of other aspects of axiomatic mathematics. Even with this, several researchers say a lack of algebraic structure sense is a source of difficulty in acquiring algebraic structures. This study aims to examine a pattern of sequences of problem-solving paths in algebra, which is an illustration of learners' algebraic structure sense so that it can be utilized to enhance the ability to solve problems involving algebraic structure. This study employed a qualitative descriptive approach. Students who have received abstract algebra courses were chosen to serve as subjects. The instruments include tests based on algebraic structure sense, questionnaires, and interviews. This study reveals the sequence of paths used by students in the structure sense process for group materials, i.e., path of construction–analogy (constructing known mathematical properties or objects, then analogizing unknown mathematical properties or objects), path of analogy–abstraction (analogizing an unknown mathematical property or object with consideration of the initial knowledge, then abstracting a new definition), path of abstraction-construction (abstracting the definition of the extraction of a known mathematical structure or object, then constructing a new mathematical structure or object), and path of formal-construction (constructing the structure of known and unknown mathematical properties or objects through the logical deduction of a familiar definition). In general, the student's structure sense path for solving problems of group material begins with construction, followed by analogy, abstraction, and formal construction. Based on these findings, it is suggested that there is a way for lecturers to observe how students develop algebraic concepts, particularly group material, so that they can employ the appropriate strategy while teaching group concepts in the future.
Types of beliefs of secondary school students in southern Chile
Authors: Díaz Verónica , Castro Luisa , Río Pamela del
Published: January 2023

Research in mathematics education has shown that individuals' beliefs play a fundamental role in their responses to and interest in mathematics and their application of these beliefs in real-life situations. Although the literature related to the affective domain in general, and beliefs in particular, has explored the relationship between beliefs and student educational level, there still needs to be a research gap regarding the empirical testing of this variable in the context of secondary mathematics education in Chile. Therefore, the present study, with a quantitative and exploratory methodology, aims to fill this gap by adapting the Mathematics-Related Beliefs Questionnaire MRBQ to describe and analyze students' beliefs in mathematics at two levels of secondary education. The main results of the study indicate that mostly positive beliefs are observed in the three types of beliefs studied: Beliefs about the social context, about self-concept, and mathematics education, highlighting the dimension of beliefs about the social context or classroom environment, in which students showed a highly positive perception of the role of the mathematics teacher.
How does a missing part become important for primary school students in understanding fractions?
Authors: Pramudiani Puri , Herman Tatang , Turmudi  , Dolk Maarten , Doorman Michiel
Published: January 2023

Understanding of fractions is difficult for Indonesian students. This often leads to misinterpretation in solving fractional problems. In this study, a task aiming at identifying students’ struggles in understanding the basic concept of part-whole relationships in fractions was developed and tested with six 4th-grade students. The task uses Indonesian sweet food, martabak, that has a rounded pizza-like shape as a context in which one slice was missing. Realistic Mathematics Education underlies the context designed, that was also inspired by the Dutch textbook Alles telt Q Basiswerkschrift. The study used a qualitative methodology through an interview, observation, and written test. The result of this study indicated that the students’ struggles can be identified as follows: making references to the whole, making references to the complete partition, and making sense of the incomplete partition. The study showed that the designed tasks have potentials to provoke students' reasoning in learning fractions. The findings indicate that when students learn fractions, their understanding of the meaning of fractions should be well addressed with problems that challenge this part-whole relationship. Challenging this relationship can be supported with problems that have some ambiguity about what is the ‘whole’
using the missing part context.
Examples and generalizations in mathematical reasoning – A study with potentially mathematically gifted children
Authors: Jablonski Simone , Ludwig Matthias
Published: January 2023

Mathematical arguments are central components of mathematics and play a role in certain types of modelling of potential mathematical giftedness. However, particular characteristics of arguments are interpreted differently in the context of mathematical giftedness. Some models of giftedness see no connection, whereas other models consider the formulation of complete and plausible arguments as a partial aspect of giftedness. Furthermore, longitudinal changes in argumentation characteristics remain open. This leads to the research focus of this article, which is to identify and describe the changes of argumentation products in potentially mathematically gifted children over a longer period. For this purpose, the argumentation products of children from third to sixth grade are collected throughout a longitudinal study and examined with respect to the use of examples and generalizations. The analysis of all products results in six different types of changes in the characteristics of the argumentation products identified over the survey period and case studies are used to illustrate student use of examples and generalizations of these types. This not only reveals the general importance of the use of examples in arguments. For one type, an increase in generalized arguments can be observed over the survey period. The article will conclude with a discussion of the role of argument characteristics in describing potential mathematical giftedness.
Local instructional theory of probability topics based on realistic mathematics education for eight-grade students
Authors: Armiati  , Fauzan Ahmad , Harisman Yulyanti , Sya’bani Febrina
Published: January 2023

This study examines the development of learning designs based on Realistic Mathematics Education (RME) on the probability topic at the eighth-grade junior high school level. Probability abounds in everyday life, and the RME approach is believed to develop students’ mathematical communication skills. This learning design development used the Plomp model combined with Gravemeijer and Cobb model. The research phase includes preliminary research, prototyping phase, and assessment phase. The products of this research are a valid, practice, and effective Local Instructional Theory (LIT) and teacher and student books. The results showed that the students who participated in learning using RME-based designs could determine the concept of probability and effectively improve students’ mathematical communication skills.
Developing PISA-like math problems in the content of space and shape through the context of historical buildings
Authors: Aini Indrie Noor , Zulkardi  , Putri Ratu Ilma Indra , Yaniawati Poppy
Published: January 2023

The essential purpose of developing PISA-like questions is to train students' reasoning abilities so that students' ability to solve PISA-like questions increases. Therefore, this research aims to produce PISA-like math problems in the context of historical buildings in the Karawang Regency that are valid, practical, and potentially affect mathematics learning. The subjects of this study were junior high school students at SMPN 2 Karawang Barat. This research uses design research with development studies, consisting of preliminary and prototyping phases. The preliminary stage consists of two stages: needs analysis and design, while the prototyping stage consists of 5 phases: self-evaluation, expert review, one-to-one, small group, and field tests. The data collection techniques in this study were in the form of PISA-like math problems in the context of shape and space with the context of Historic Buildings in Karawang, observations, questionnaires, and interviews. All data obtained were analyzed descriptively. The results show that this study resulted in nine PISA-like math problems in the context of shape and space with the context of Historic Buildings in Karawang that are valid, practical, and potentially affect learning mathematics. The potential effect is related to students' interest in PISA-like questions and students' ability to understand and answer PISA-like questions. Finally, the results of this study have an impact on students who are getting trained in solving PISA-like math problems.
La comunidad macrobentónica intermareal de bahía Chile (isla Greenwich, Antártica) y su relación entre parámetros fisicoquímicos y granulométricos
Authors: Pérez Muñoz Daniel Ignacion , Gómez-Fuentes Claudio , Aravena Daniel , Calisto Ulloa Nancy Cristina
Published: January 2023

La actividad humana ha ido en aumento en el continente antártico, lo que ha significado un impacto en áreas litorales por medio de los residuos, los cuales afectan a las comunidades bentónicas intermareales que han sido poco estudiadas. El presente estudio tiene como objetivo determinar los parámetros comunitario de los macroinvertebrados bentónicos en el intermareal de bahía Chile/Discovery (Isla Greenwich) y su relación con variables fisicoquímicas (materia orgánica, hidrocarburos totales del petróleo, fósforo libre y nitrógeno total) en las proximidades del emisario de la base naval Arturo Prat. Para ello, se tomaron muestras de sedimento en dos transectos paralelos a la línea de costa, los cuales estaban ubicados a ambos lados del emisario a 25, 50, 200 y 300 metros de distancia. Se identificaron un total de 10 taxones de los cuales Harpacticoidea y Oligochaeta fueron los más abundante. Los valores de abundancia por muestra variaron entre 256 y 12.176 (Ind*m-2). Mientras que el promedio del índice de Shannon-Wiener (H’) varió entre 0,57 (± DS= 0,53) y 1,32 (± DS= 1,26) y la uniformidad promedio (J´) varió entre 0,32 (± DS= 0,29) y 0,63 (± DS= 0,60). El análisis de componentes principales mostró una relación directa entre la abundancia y la concentración de las variables fisicoquímicas. La composición del sedimento intermareal estuvo compuesta principalmente por Arena muy gruesa y Grava en las estaciones muestreadas. Por otro lado, los resultados obtenidos muestran que las variables fisicoquímicas, composición taxonómica, equidad y valores de diversidad eran similares a las obtenidas para otras áreas de la Isla Rey Jorge.
Premisas psicológicas sobre la discapacidad y la educación especial
Authors: Robles Mendoza Alba Luz , Bárcena Gaona Susana Xóchitl
Published: January 2023

Esta obra surgió como parte de los trabajos académicos integrados en el posgrado de la maestría en Psicología con residencia en Educación Especial de la Facultad de Estudios Superiores Iztacala de la Universidad Nacional Autónoma de México. Su objetivo es incorporar temáticas básicas y actuales que sirvan al alumnado de la residencia en el posgrado, así como a cualquier persona interesada en el ámbito que, de manera sencilla, pueda adquirir conocimiento en torno a la educación especial desde la perspectiva psicológica de la discapacidad, teniendo en cuenta los fundamentos teóricos, jurídicos, metodológicos y de evaluación relacionados con las personas que se encuentran en condiciones desaventajadas biológica, social y culturalmente.
Esta obra abordan temas de gran importancia en la sociedad moderna y continúa la tradición proppia de la FES-Iz tacala de insertar la investigación de la Psicología en el campo de la educación especial y rehabilitación en un marco teórico y metodológico riguroso. La obra es una muestra palpable de que la Psicología puede hacer un aporte importante en la identificación de problemas individuales derivados de las dificultades de los miembros de diferentes grupos, y proponer objetivos y herramientas de trabajo que permitan solucionar este problema de acuerdo con las necesidades específicas de cada persona.
El abordaje de las temáticas que conforman el libro permitirá al lector 1) tener un entendimiento teórico y metodo lógico del desarrollo psicológico, 2) la importancia de hacer intervención temprana para identificar y reducir el riesgo de que se produzcan daños en pequeños con desventajas de índole biológica, social y cultural; 3) adquirir dominio en habilidades de evaluación e intervención en personas con TDAH, y 4) tener una perspectiva actual del abordaje de la sexualidad en PcD, la educación inclusiva y los derechos humanos que deben garantizarse en esta población.
Is an equally weighted global investment portfolio the outperformer?
Authors: Damani Akshay , Vaidya Nandip
Published: January 2023

The paper builds, in the first part, a benchmark index based on the optimal mix of indices for the global asset classes of equity, fixed-income securities, real estate, commodities, and currencies including cryptocurrencies so as to maximize the ex-post Sharpe ratio. The objective of the first part is to help investors across the globe compare portfolio performance with a uniform benchmark. In the second part, a comparison of portfolio performances is based on five methods of portfolio construction viz; 1) historical returns and variance matrix used along with Markowitz model to discover optimal weights for portfolio components, 2) modification to this approach by using autoregressive integrated moving average (ARIMA) based predicted returns in place of historical returns, 3) global minimum volatility (GMV) portfolio, 4) global market weight portfolio and 5) equal weight portfolio. The objective in the second part is to explore an easy-to-use and at the same time conceptually sound method to build portfolios for any investor worldwide even if such an investor does not have access to or does not wish to rely upon the views and opinions of investment experts. The ex-post performance of portfolios based on these five methods is compared with the ex-post performance of 207 global active and passive funds. This comparison suggests that an equal-weighted portfolio with periodical rebalancing gives the best Sharpe ratio for a global investor.
The effect of the COVID-19 pandemic on pediatric intensive care admissions for severe acute asthma
Authors: Berg Sarah van den , Bazdar Somaye , Rutjes Niels , Bloemsma Lizan D. , Downward George S. , Weger Letty A. De , Terheggen-Lagro Suzanne , Wijck Yolanda van , Zee Anke-Hilse Maitland - van der , Kapitein Berber
Published: January 2023

Background – The incidence of pediatric asthma exacerbations
during the COVID-19 pandemic has been evaluated; however, the incidence
of severe acute asthma (SAA) requiring a Pediatric Intensive Care Unit
(PICU) admission is unknown. Furthermore, we examined several factors
which might influence this incidence, such as environmental triggers or
changes in COVID-19 lockdown regulations. Methods – In this
single-center, retrospective cohort study running from 2018 to 2021, all
PICU admissions for SAA of children above two years of age at a tertiary
hospital in the Netherlands were included. Information on potential
asthma triggers during the pandemic, including viral infections,
concentrations of ambient fine particulate matter (PM2.5) and pollen
index were evaluated. Results – In total, 168 children were
included in this study. While we observed a decrease in PICU admissions
for SAA during lockdown periods, there was an increase in the admission
rates in the periods without a lockdown, with the highest peak from
August to November of 2021. This peak in the fall of 2021 did not align
with pollen or ambient PM2.5 concentrations (r =-0.04
for pollen and r =0.23 for PM2.5). Discussion –
COVID-19 lockdowns influenced the admission rates for SAA at the PICU
both during and after the lockdowns in the Netherlands. We hypothesize
that an increase in viral infections after lockdown periods was the
reason for the altered incidence of SAA at the PICU in late 2021, rather
than air pollution and pollen concentrations.
Quality assessment of patient-reported outcome measures for patients with multiple ear complaints
Authors: Kraak Jeroen , Merkus Paul , Patrick Donald
Published: January 2023

Introduction: There is an increased demand for well-validated PROMs in
otology. This study will systematically assess the methodological
quality of all published patient-reported outcome measures (PROMS) for
patients with multiple ear complaints and to identify the best suitable
PROM for use by clinicians treating patients with multiple ear
complaints. Methods: An extensive systematic mapping review on all
otology questionnaires was performed to identify questionnaires
measuring multiple ear complaints. The ‘Consensus‐based standards for
the selection of health measurement Instruments’ (COSMIN) checklists
were used to evaluate the quality of the questionnaire by two
researchers. The worst item score per aspect of the methodological
assessment counted. Results: Twelve multiple complaint questionnaires
were included in the study for quality assessment. Ten questionnaires
were disease specific (COMQ-12, CES, ZCMEI-21, MD-POSI, PAN-QOL, ETDQ-7,
MDOQ, GYSSCDQ, COMOT-15 and DEU-MDDS). Two questionnaires were ear
domain specific (OQUA and COQOL). The majority of multiple complaint
questionnaires lacked good design with concept elicitation and patient
involvement. Conclusion: For the majority of questionnaires, the quality
assessment was inadequate as only a few authors consulted with patients
affected by the complaints in the development. Modifications of earlier
versions of PROMS or combinations of multiple questionnaires lead to
ongoing (cross-cultural) validation of these questionnaires albeit the
mediocre design and validation. The two domain specific questionnaires
are the COQOL and OQUA, both with adequate quality but different focus.
COOQL to quantify the quality of life and OQUA to measure and evaluate
severity and impact of ear complaints.
Whole genome transcriptome analysis in a case of a neonatal soft tissue sarcoma with YWHAE:NUTM2B fusion
Authors: Locke Arielle , Terry Jefferson , Shen Yaoqing , Courtemanche Douglas , Rosenbaum Daniel G. , Rassekh Shahrad , Deyell Rebecca , Cheng Sylvia
Published: January 2023

Soft tissue sarcomas in neonates are rare and heterogeneous tumors. We
report an aggressive neonatal undifferentiated round cell sarcoma with a
YWHAE:NUTM2B fusion. The tumor was identified antenatally and the
neonate underwent surgical resection at four days of age. Whole-genome
and transcriptome sequencing of tumour and germline was undertaken to
provide molecular characterization and elucidate possible novel
therapies. In addition to molecular characterization of a YWHAE:NUTM2B
fusion, RNA expression outliers were described. Targeted therapy was not
pursued due to rapid clinical decline. Understanding the genomic profile
of rare tumors remains important in the development of novel therapeutic
strategies.
Three dimensional Spatio Temporal Imaging Correlation (STIC) in the diagnosis of isolated infra-cardiac total anomalous pulmonary venous connection (TAPVC) in fetal life
Authors: Krishna Mani Ram , Sennaiyan Usha Nandhini
Published: January 2023

Isolated TAPVC is difficult to diagnose on a prenatal ultrasound as
standard obstetric screening views are often normal. We present a case
of isolated infra-cardiac TAPVC highlighting the utility of STIC imaging
in the diagnosis ofTAPVC
The Structure of the Lingual Papillary of the Asian Palm Civet’s ( Paradoxurus hermaphorditus ): The Analysis of Feeding Habit Adaption using Gross-Morphometric, Scanning Electron Microscope, Light Microscope (Histochemistry Staining)
Authors: Kusindarta Dwi , Saputra Felix Chaya Eka , Nurliani Anni , Gracia Ignasius , Wihadmadyatami Hevi
Published: January 2023

The Asian palm civet ( Paradoxurus hermaphroditus) is a wild
mammal which is living in nature in Indonesia forest. Recently due to
the highest demand of civet coffee, push the changes of the living
environment of the Asian palm civet as the pet or captive breed. Changes
in the environment from the wild to human intervention cause shift in
their behaviour and feeding patterns. This is thought possibly to affect
it’s anatomical structure and histology digestive organ and mainly the
lingual papillae as an entrance of the food. This study aims to analyse
the anatomical structure of the lingual papillae and the secretions of
the lingual glands in Paradoxurus hermaphroditus due to the
changes of the food behaviour by gross macroscopy, scanning electron
microscopy (SEM) and light microscopy (LM) in the form of histochemical
staining (hematoxyline eosin, Alcian Blue-Periodic Acid Schiff, and
Masson’s Trichrome). The SEM results revealed that several type lingual
papillae are found on the tongue of the Paradoxurus
hermaphroditus they are: fungiform, arrowhead filiform, giant arrowhead
filiform, scale-like filiform, conical, and circumvallate papillae. The
histological results showed that on the radix of tongue of the civet are
found Weber’s glands which produce the secretion of neutral and acid
mucin. Collagen fibers were found scattered in all of the lamina propria
and some of the tunica muscularis with higher collagen intensity at the
apex. In conclusion, these results provide the new insight of the
adaptation form of the lingual papillae of the Asian palm civet due to
their changes of feeding behaviour based on the type, number,
distribution of the papillae, as well as the type of lingual gland
secret and the presence of the collagen fibre.
Notch S-N Curve Method for fatigue life analysis of notch components of metals in low/medium/high cycle fatigue regime
Authors: yan xiangqiao
Published: January 2023

From the author’s recent studies, it was found that, in low/medium/high
cycle fatigue(LHCF) regime, the Wöhler Curve Method is well suitably
employed to perform the fatigue life assessment of metals, in which the
stress-based intensity parameter calculation is based on the
linear-elastic analysis. In this study, an attempt is made
through many fatigue test data of notch components of metals from the
literature to illustrate that, in LHCF regime, the Notch S-N Curve
Method is well suitable for fatigue life analysis of notch components of
metals, in which the stress-based intensity parameter calculation
is based on the linear-elastic analysis. By concepts of the
critical stress and the critical distance by Taylor and by two
calibration fatigue failure curves of a smooth specimen and notch
specimen by Susmel and Taylor, further, a local approach for predicting
the notch S-N curve is proposed based the linear elastic stress fields
ahead of notches. Accuracy of the Notch S-N Curve Method is proven by
many fatigue test data of notch components of metals from the literature
in LHCF regime.
Ground state solution for a periodic p\&q-Laplacain equation involving critical growth without the Ambrosetti-Rabinowitz condition
Authors: Shen Liejun
Published: January 2023

We study the ground state solutions for the following
p\&q-Laplacain equation \[
\left\{
\begin{array}{ll}
-\Delta_pu-\Delta_qu+V(x)
(|u|^{p-2}u+|u|^{q-2}u)=\lambda
K(x)f(u)+|u|^{q^*-2}u,~x\in\R^N,
\\ u\in
W^{1,p}(\R^N)\cap
W^{1,q}(\R^N), \end{array}
\right. \] where
$\lambda>0$ is a parameter large enough,
$\Delta_ru =
\text{div}(|\nabla
u|^{r-2}\nabla u)$ with
$r\in\{p,q\}$ denotes
the $r$ Laplacian operator, $1
Research on Online Condition monitoring for Complex System based on Modified Broad Learning Systems
Authors: Wang Chong , Liu Jie
Published: January 2023

Monitoring the condition of complex systems with implemented sensors in
an online manner is of great importance to their safety and
availability. Broad learning system (BLS), which expands the
single-hidden-layer neural network by enriching the number of
hidden-layer nodes, can greatly improve the model training efficiency.
But, the randomly generated hidden-layer nodes make BLSs performing
poorly in some high-dimensional data classification tasks. This paper
focuses on providing some ideas to tackle this problem by optimizing the
generation of initial nodes to compact the BLS hidden-layer structure.
Specifically, logistic regression (LR) and structural causal model (SCM)
are considered to obtain rough predictions of system fault state to
replace the randomly generated hidden-layer nodes with no practical
significance. Thus, the outputs of the initial node groups are more
closely related to the system health status. The proposed methods are
expected to improve the feature extraction effectiveness, to simplify
the network structure, and to reduce the computational burden. Various
simulation datasets are considered to prove the universality of the
proposed method in complex system fault diagnosis. And, with real data
from a high-speed train brake control system, the effectiveness of the
proposed online monitoring framework is further verified. It is also
shown that the proposed methods are convenient to migrate to new
operation environments.
Bio-evaluation of Poly-Lactate co-Glycolic Acid (PLGA) nanoparticles loaded with radio-labeled rifampicin.
Authors: Rather Imran Ibni , Shafiq Nusrat , Shukla Jaya , Kaur Gurvinder , Pandey Somit , Kondel Ritika , Pandey Avaneesh , Mittal B.R , Sharma Navneet , Khuller G.K , Malhotra Samir
Published: January 2023

The poly lactate co-glycolic acid (PLGA) nanoparticles of tubercular
drugs have been demonstrated to have sustained release profile over
seven days. There is no information on the location or mode of release
of these nanoparticles in living system. Therefore, we have planned the
study to explore the pharmacokinetics and biodistribution of PLGA
rifampicin nanoparticles in healthy human volunteers. Rifampicin was
labeled with 99mTc by indirect method and nanoparticles were prepared by
a single emulsion evaporation method. To investigate the
pharmacokinetics and biodistribution of nanoparticles, a single dose of
450 mg of rifampicin was administered orally to healthy human volunteers
divided into two different groups. Following a single oral dosage of the
rifampicin nanoformulation, the PK parameters were significantly
different between the nanoparticle and conventional groups AUC (113.8 vs
58.6), MRT (16.2 vs 5.8) and Ke (0.04 vs 0.10). Also SPECT/CT images
revealed bio-distrubution of nanoparticles in the distal portions of the
intestine, which is consistent with our dosimetry analysis Significant
difference in PK parameters and bio-distribution of nanoparticles in
spleen and lymph nodes with maximum deposition were observed in large
intestine. Nanoparticle distribution pattern may be advantageous for the
treatment of intestinal or lymph node TB and has the potential to result
in a lower dose of rifampicin nanoformulation for the treatment of
pulmonary TB.
Biotoxic and Cytotoxic Effects of Occupational Pesticide in the Buccal cells of Sudanese Farmers
Authors: Ali Yousra , -Ali Hidaya Mohammed , Aldekhery Alrufaai , Abdelrahman Hanan , Batran Samah , Zakout Yosef
Published: January 2023

Farmers are at high risk for developing adverse health problems due to
occupational pesticide exposure. we aimed to compare the frequency of
the micronuclear (MN) cellular changes, g binucleated cells (BN),
karyorrhexis (KR) and karyolysis (KL) in pesticide exposed farmers and
non-exposed individuals. Also, to correlate between the frequency of MN
cellular changes and the other nuclear abnormalities with farmers‘ age,
their use of personal protective equipment (PPE) and the duration of
pesticides exposure. A total of 92 buccal smears were collected from
Sudanese farmers (cases: n=50, exposed to pesticides) and non-farm
workers (controls: n=42, non-exposed to pesticides). The smears were
fixed with 95% ethanol and stained following the standard Feulgen
technique., A structured questionnaire was designed to collect
demographic data and pesticide exposure related information. 39 (78%)
farmers do not use PPE. In addition, there was a significant difference
(P< 0.05) in the frequency of Micronucleated cells (MN), Total
Micronuclei (TMN), Binucleated cells (BN), Karyorehxsis (KH), and
Karyolysis (KL) in the buccal cells of cases and control. The
application of pesticide without adopting standard protective measures
caused genotoxic and cytotoxic effects in farmers’ buccal cells.
The effects of FDI net inflow on the current account of southeast Europe countries - a panel causality analysis
Authors: Kovacevic Radovan
Published: January 2023

This paper examines the relationship between the current account (CA) and the
foreign direct investment (FDI) net inflow in the Southeast Europe (SEE)
countries. The panel data framework of five SEE countries for the period
2000- 2020 are used. Our research has three main findings. First, using the
vector autoregressive VAR(2) model, a long-run relationship between the CA
and the net FDI inflow is identified (a 1% increase in the net FDI inflow
leads to a 1.011% increase in the CA deficit). This suggests that FDI stock
will put upward pressure on the CA of the SEE countries in the long run.
Second, applying the panel VAR model Granger causality test, we found that
there is a two-way directional Granger causality. Third, our results from
the vector error correction (VEC) model suggest that about 26% of the
dynamics of the CA deficit adjusts to the long-run equilibrium path with the
net FDI inflow each year.
Ten years after the introduction of the European system for cardiac operative risk evaluation 2: A single center validation
Authors: Mihajlovic Bojan , Redzek Aleksandar , Jarakovic Milana , Popov Tanja , Aleksandric Dejan , Velicki Lazar
Published: January 2023

Introduction. The aim of this study was to evaluate the predictive value of
the European System for Cardiac Operative Risk Evaluation II in adult
patients with acquired heart diseases. Material and Methods. The research
included a consecutive series of 6,031 patients who underwent coronary,
valvular and combined cardiac surgical interventions in the period from
January 15, 2015 to December 31, 2020. Model calibration was assessed by
comparing the ratio of actual to expected postoperative mortality and using
the Hosmer-Lemeshow test. The discriminative power was examined using the
area under the receiver operating characteristic curve. Results. A total of
2,883 patients underwent isolated coronary surgery, 1,841 underwent valvular
procedures, while a combined procedure was performed in 1,307 patients. The
operative risk was moderately underestimated in the entire group, as well as
in the group of patients who underwent surgical revascularization of the
coronary arteries. In patients who underwent valvular surgery, the actual
mortality rate was slightly overestimated, while in patients with combined
procedures it was moderately underestimated. The European System for Cardiac
Operative Risk Evaluation II showed excellent discriminative power in the
whole group of patients undergoing surgery (area under the curve = 0.825, p
< 0.0005). The cut-off value was 2.60, sensitivity 0.757 and specificity
0.750. The discriminative power of the model was excellent in the group of
coronary patients (area under the curve = 0.810) as well as in the group
with isolated valvular surgery (area under the curve = 0.815). In patients
with combined procedures, the discriminatory power was very good (area under
the curve = 0.775). Conclusion. The results of our single centre study show
that European System for Cardiac Operative Risk Evaluation II predicts
hospital mortality with satisfactory results in the entire group, but
underestimates it when it comes to combined cardiac surgical procedures. The
discriminative power of the model is excellent.
Quality of life of families of premature children
Authors: Jokanovic Marijana , Mladenovic Tamara , Slavkovic Sanela
Published: January 2023

Introduction. The quality of family life is defined as the wellbeing of a
family in which the individual and family needs constantly interact.
Families are continually adapting to various changes in the course of life,
until they reach a balance in functioning. Premature birth is a challenge
for parents. Many parents develop symptoms of depression or anxiety, and
impaired family functioning continues to manifest years after the premature
birth itself. All this significantly affects the quality of life of these
families. Material and Methods. This research included 101 families of
premature children in the territory of Autonomous Province of Vojvodina. The
following assessment instruments were used: a general questionnaire and the
Beach Center Family Quality of Life Scale. Results. The primary family is
the most common living environment. More than half (61.5%) of children spend
the most of their time with their primary family. The majority of parents
included in this research are satisfied with family interactions. The
emotional component of this category was rated as ?very satisfied? by most
of the parents (61.5%). A large percentage of parents (86.5%) are involved
in the Association of Parents of Premature Children and this is an important
factor in improving their quality of life and making transitions easier.
Conclusion. Premature birth of a child significantly affects the family
quality of life. A clinical approach to these families is not sufficient. A
holistic, family-oriented approach could potentially be very useful in
working with these families. Addressing both the physical and psychological
needs of these families can provide very useful information and guidelines
for further work in improving their quality of life.
Folie à deux - a case report
Authors: Bjelan Sanja , Okanovic Milana , Vejnovic Ana-Marija , Stankovic Nemanja , Savic Predrag
Published: January 2023

Introduction. Shared psychotic disorder, or folie ? deux, is a rare entity
characterized by the transmission of psychotic symptoms from one patient
(the inducer) to another (the induced). Delusional disorder is a type of
mental illness (International Classification of Diseases, Tenth Revision,
Clinical Modification, diagnosis code F24; it was moved from the Diagnostic
and Statistical Manual of Mental Disorders, Fifth Edition, to Other
Specified Schizophrenia Spectrum and Other Psychotic Disorders). Only one
person (the inducer) suffers from a real psychotic disorder, and the other/s
is/ are induced, and most often recover/s after separation from the inducer.
Case Report. Based on the medical records and available literature on this
condition, we present a case of a mother and son with this disorder, where
the son with a paranoid psychosis transfers it to his mother. They lived
alone in the same household for years, socially isolated from the others.
Conclusion. In general, the research has shown that there are no uniform
opinions among authors regarding the incidence of the disorder in males and
females, at younger and older age, as well as in relationships between
partners, siblings, and between parents and children. Most agree that
longterm social isolation is among the most common risk factors, as well as
dominance and strong power of suggestion in one partner, and passivity and
tendency to suggestion in the other.
Numerical comparisons for solving fractional order integro-differential equations with non-local boundary conditions
Authors: Turut Veyis
Published: January 2023

In this paper, univariate Pade approximation is applied to fractional power
sries solutions of fractional integro-differential equations with
non-local boundary conditions. As it is seen from comparisons, univariate
Pade approximation gives reliable solutions and numerical results.
On approximation of helix by 3rd, 5th and 7th order Bezier curves in E3
Authors: Kilicoglu Seyda
Published: January 2023

Approximation of helices has been studied by using in many ways. In this
study, it has been examined how a circular helix can be written as Bezier
curve and written the 3th degree, 5th degree, and the 7th degree Maclaurin
series expansions of helices for the polynomial forms. Hence, they can be
written cubic, 5th order, and 7th order Bezier curves, based on the control
points with matrix form we have already given in E3. Further we have given
the control points of the Bezier curve based on the coefficients of the
Maclaurin series expansion of the circular helix.
The hyperbolic-type k-Fibonacci sequences and their applications
Authors: Tas Sait
Published: January 2023

In this study, we define hyperbolic-type k-Fibonacci numbers and then give
the relationships between the k-step Fibonacci numbers and the
hyperbolic-type k-Fibonacci numbers. In addition, we study the
hyperbolic-type k-Fibonacci sequence modulo m and then we give periods of
the Hperbolic-type k-Fibonacci sequences for any k and m which are related
the periods of the k-step Fibonacci sequences modulo m. Furthermore, we
extend the hyperbolic-type k-Fibonacci sequences to groups. Finally, we
obtain the periods of the hyperbolic-type 2-Fibonacci sequences in the
dihedral group D2m, (m ? 2) with respect to the generating pairs (x,y) and
(y, x).
How to approximate cosine curve with 4th and 6th order Bezier curve in plane?
Authors: Kilicoglu Seyda , Yurttancikmaz Semra
Published: January 2023

There are many ways to approximate cosine curve. In this study we have
examined the way how the cosine curve can be written as any order Bezier
curve. As a result using the Maclaurin series we have examined cosine curve
as the 4th and the 6th order Bezier curve based on the control points with
matrix form in E2. We give the control points of the 4th and the 6th order
Bezier curve based on the coefficients. Also we give the coefficients based
on the the control points of the 4th and the 6th order Bezier curve too.
Some conditions on starlike and close to convex functions
Authors: Yildiz Ismet , Sahin Hasan , Mert Oya
Published: January 2023

Many mathematical concepts are explained when viewed through complex function
theory. We are here basically concerned with the form f(z)=a0+a1z+a2z2+...f(z) ?A, f(z)=z+??, n=2anZ2 will be an analytic
function in the open unit disc U={z:|z|<1, z=?C}normalized by f(0) = 0, f'(0)=1. In this
work, starlike functions and close-to-convex functions with order 1/4 have
been studied according to the exact analytic requirements.
The α-interval valued fuzzy sets defined on α-interval valued set
Authors: Cuvalcioglu Gokhan , Bal Arif , Citil Mehmet
Published: January 2023

In this study, ?-interval valued set is defined whose elements are closed
sub-intervals including ? of unit interval that is I = [0, 1]. With
different order relation on this set, the properties of ?-interval valued
set are examined. By the help of this order relation, it is shown that
?-interval valued set is complete lattice. Negation function on ?-interval
valued set is given in order to study the theoretical properties of this
set. By means of discussions on ?-interval valued set, the fundamental
features of ?-interval valued set are studied. By the help of ?-interval
valued set, ?-interval valued fuzzy sets are defined. The fundamental
algebraic properties of these sets are examined. The level subsets of
?-interval valued fuzzy sets are defined to give the relations between
?-interval valued sets and crisp sets. With the help of this definition,
some propositions and examples are given.
On some fundamental properties of α-interval valued fuzzy subgroups
Authors: Bal Arif , Cuvalcioglu Gokhan , Tugrul Feride
Published: January 2023

In this paper, the definition of ?-interval valued fuzzy subgroup is
introduced by the help of ?-interval valued fuzzy set which is constructed
on ?-interval valued set whose elements are closed sub-intervals including ?
of unit interval I = [0, 1]. The fundamental and structural properties of
these groups are examined. Some definitions, propositions and examples about
these groups are given.
A lie symmetry approach for a non-linear ordinary differential equation arising in engineering sciences
Authors: Bakkaloglu Ahmet
Published: January 2023

A non-linear second order ODE has some applications in engineering problems.
In physics, it arises in the modeling of the flux of a heated compressible
fluid through a long slender tube. In this paper, we consider a non-linear
second order differential equation whose analytic solution cannot be
obtained directly. Therefore, we first find the canonical transformations
to rewrite the equation in terms of canonical variables by using the Lie
symmetry approach. We then reduce the order of the equation, which is a
first type Abel equation, to one by defining a new variable.
Experimental verification of the feasibility of the CFD approach in an air-knife
Authors: Altay Ramazan , Yaman Gulsen , Yaman Ramazan
Published: January 2023

Air knives with very different nominal values are used for various purposes
in the industry. The uses of air knives include the painting and coating
stages of automobile semi-finished products, as well as many stages related
to food production. One of the important sectors among these is the
continuous hot-dip galvanizing process, which is a coating technique in the
steel industry. In addition, the chemical coating process on paper as a
very thin layer is another research topic. The most critical process needed
in these sectors is to ensure a homogeneous air-flow at the expected air
speed of the air-knife. These determine whether the coating on the steel or
the chemical layer on the paper is homogeneous at the desired thickness. In
this study, it is aimed that the air-knife can reach the expected values
(speed and homogeneous distribution) with the expected tolerances, the
shortest time, cost, and the least production process error. First, a design
has been made so that this knife can blow air at the desired speed and
homogeneously. For this, the most appropriate modeling and design values
were created and analyzed with the CFD. The analysis and evaluations of the
design were confirmed as a result of the measurements made on the prototype.
This study shows that the inclusion of this type of modeling and analysis in
the rapid product development process has an important role in minimizing
cost and time.
On the inscription on the baptismal font from the time of Prince Viseslav: Some epigraphic remarks
Authors: Komatina Predrag
Published: January 2023

The paper discusses some epigraphic features of the inscription on the
baptismal font of the priest John from the time of Prince Viseslav from the
end of the 8th and the beginning of the 9th century and points out the
similarities and parallels between it and the inscription of Bishop John of
Kotor on the architrave in the Kotor Cathedral of St. Tryphon from 805.
Based on them, it is assumed that the baptismal font could also be
attributed to the famous ?Kotor stonecarvers? workshop from the time of
Bishop John?.
Obrok from article 110 of the Dushan code and posul from legal sources of Russian medieval law
Authors: Cvorovic Zoran
Published: January 2023

The provision of Article 110 of Dushan?s Code, which prohibits judges from
taking obrok by force, has not been examined from a comparative legal point
of view, although in civilizationally close Russian law, primarily in the
Sudebniks from 1497 and 1550 and the Saborno ulozhenie from 1649, there are
similar anti-corruption regulations that prohibit judges from taking posul.
The evolution of the concept of posul in Russian law, as well as the related
tax institutions of obrok and korm, sheds a different light both on the
overall development of the tax institution if obrok in Serbian law during
the 13th and 14th centuries, as well as on the meaning of Article 110 of
Dushan?s Code itself. While previous research on the Serbian obrok gives an
extremely static view of this fiscal institution, according to which obrok
from Dushan?s Code has the same meaning as obrok from the Bistrica Charter
of King Stefan Vladislav, the related regulations of Russian legal sources
show that the same tax expressions over time received a completely different
legal meaning. This paper starts from the premise that the new meaning of
the term ?obrok? from the Article 110 of Dushan?s Code is directly related
to the changes in the organization of Dushan?s state, which in its legal
nature is close to the Muscovite state of Emperor Ivan IV Vasilyevich.
Aggressive Squamous Cell Carcinoma in a Case of Epidermodysplasia Verruciformis Carrying a TMC6 Splice-site Mutation
Authors: Yokoi Kazunori , Arase Noriko , Shimbo Takashi , Fujimoto Manabu , Tanemura Atsushi
Published: January 2023

Abstract is missing (Short communication)
Anticancer activity of Curcumin-Loaded Nanoparticles
Authors: Ali Hussein Hanaa
Published: January 2023

Curcumin (CUR) is a natural bioactive compound with different bioactivities such as anti-cancer, anti-inflammatory, antioxidant, anti-microbial, and anti-parasitic, but the CUR exhibited low bioavailability, poor water solubility, and rapid hydrolysis. However, this review summarized the anticancer activities of CUR-loaded nanoparticles (NPs) and their ability to enhance CUR water solubility and increased loading efficiency in an in vitro and in vivo animal model.
Aspect of COVID-19 Pandemic: Case for Mass Spectrometry
Authors: Albarbarawi Osama
Published: January 2023

Fast spread of COVID-19 worldwide causing unprecedented number of coronavirus infections, Scientist community are in race to control the disease by the development of both novel effective diagnostics strategies and effective therapies. Ultimately an efficient vaccine. Research efforts has focused on recognition of the pathogen entry mechanisms to the host's cells, simultaneously characterize the host’s cellular defence mechanisms in response to the pathogen attack. Early genome sequencing enlighten us on the origin of the virus responsible for the severe acute respiratory syndrome coronavirus 2 (SARSCoV-2) pandemic. PCR tests first implemented to recognize the presence of viral RNA. PCR tests for SARS-CoV-2 has no gold standard reference, which limits the accuracy of results and increases the percentages of false positives, besides PCR test are unable to predict disease status (progression). Alternative techniques where tested and evaluated, such as immunological based tests. Mass spectrometric methods. Which was suggested as a complementary method to the structural information gathered by molecular level test? Here, we highlight on the contributions of mass spectrometry to several areas of SARS-CoV-2 infectious disease research understanding the host’s cell proteome changes including diagnostics techniques, vaccines and therapies.