bluuebunny/crossref_metadata_2025_split huggingface dataset:
The study of solutions for several systems of PDDEs with two complex variables
Authors: Xu Yi Hui , Liu Xiao Lan , Xu Hong Yan 
Published: August 2023

Abstract
The purpose of this article is to describe the properties of the pair of solutions of several systems of Fermat-type partial differential difference equations. Our theorems exhibit the forms of finite order transcendental entire solutions for these systems, which are some extensions and improvement of the previous theorems given by Xu, Cao, Liu, etc. Furthermore, we give a series of examples to show that the existence conditions and the forms of transcendental entire solutions with finite order of such systems are precise.
Estimation of GPA at Undergraduate Level using MLR and ANN at Arab International University During the Syrian Crisis: A Case Study
Authors: al-Swaidani Aref M. , al-Hajeh Tamer 
Published: August 2023

Abstract
The aim of the current study is to estimate the graduation grade point average (GPA) at the Arab International University (AIU). The importance of this study is that it is the first of its kind in Syria, particularly under the conditions of the bitter war, which has not yet come to its end. The sample of the study consists of data collected from AIU registry system, which covers students of six faculties from both sexes over a period of 5 years, i.e., between 2014 and 2018. The variables of the study include the student’s high school GPA, the source of the student’s certificate, and the gender of the student (GR). MLR and ANN approaches were employed in the analytical study. The correlation coefficients and several statistical criteria were calculated to evaluate the developed models. Based on the results, it can be concluded that the male students were among the key factors affecting the output, i.e., GPA. In addition, ANN tool is more accurate when the estimation of GPA value is concerned. Further, re-evaluation of this study can be done in future particularly when the male student’ trepidation disappears as stability and safety return to the country.
Language pedagogies and late-life language learning proficiency
Authors: van der Ploeg Mara , Keijzer Merel , Lowie Wander 
Published: August 2023

AbstractLate-life language learning has gained considerable attention in recent years. Strikingly, additional language (AL) proficiency development is underinvestigated, despite it potentially being one of the main drivers for older adults to learn an AL. Our study investigates whether Dutch older adults learning English for three months significantly improve their AL skills, and if explicit or implicit language instruction is more beneficial. Sixteen learners participated in online weekly group lessons, five days of 60-min homework, and pre-post-retention tests. Half were randomly assigned to the mostly explicit condition and half to the mostly implicit condition. Data includes language proficiency measures and 201 dense-data spoken homework samples. Results show improvements in several areas for both conditions. For structural errors in homework, we found implicitly taught participants to make significantly more mistakes. Our exploratory data show that older adults significantly develop AL proficiency after a short language training, and, as we only found differences between conditions on one construct, that teaching pedagogies do not play a substantial role.
Politicization of COVID-19 and Conspiratorial Beliefs Among Emergency & Public Health Officials
Authors: DeYoung Sarah E. , Farmer Ashley K. 
Published: August 2023

Abstract
In this research, we identified how political beliefs impact emergency manager’s perception of COVID-19 severity and risk. Specifically, we gathered data from people with a broad range of roles in emergency management including healthcare, mitigation, response, fire, rescue, and other areas. We asked respondents their beliefs about the severity of COVID-19, their belief in health conspiracy theories, and the public health measures associated with COVID-19 response. Quantitative results showed political affiliation was a predictor for belief in health conspiracies, as well as beliefs about social distancing as a proper mitigation measure for the spread of COVID-19, and that age and years in emergency management were not significant predictors for beliefs in health conspiracies. Qualitative results included several main themes, including frustration about the politicization of COVID-19 response and mitigation efforts, challenges in PPE (personal protective equipment) procurement, tension between public health and emergency management, misinformation about COVID-19, and lack of leadership at the federal level. These findings fill a gap in the literature regarding how political beliefs shape risk, trust, decision-making, and collaboration within emergency management.
A novel distance vector hop localization method for wireless sensor networks
Authors: Aldeen Yousra Abdul Alsahib S. , Kadhim Samira Naji , Kadhim Nahida Naji , Madni Syed Hamid Hussain 
Published: August 2023

Abstract
Wireless sensor networks (WSNs) require accurate localization of sensor nodes for various applications. In this article, we propose the distance vector hop localization method (DVHLM) to address the node dislocation issue in real-time networks. The proposed method combines trilateration and Particle Swarm Optimization techniques to estimate the location of unknown or dislocated nodes. Our methodology includes four steps: coordinate calculation, distance calculation, unknown node position estimation, and estimation correction. To evaluate the proposed method, we conducted simulation experiments and compared its performance with state-of-the-art methods in terms of localization accuracy with known nodes, dislocated nodes, and shadowing effects. Our results demonstrate that DVHLM outperforms the existing methods and achieves better localization accuracy with reduced error. This article provides a valuable contribution to the field of WSNs by proposing a new method with a detailed methodology and superior performance.
Exploring professionals’ views regarding prenatal counselling in congenital diaphragmatic hernia
Authors: De Groot Celeste R.S. , Konings Esther J.C. , de Boode Willem P. , Oerlemans Anke J.M. , Sikkel Esther , Botden Sanne M.B.I. , Merkus Peter J. , van der Lee Robin , Geurtzen Rosa 
Published: August 2023

Abstract

Objectives
Congenital diaphragmatic hernia (CDH) is a congenital malformation in which the diaphragm and lungs are underdeveloped, leading to cardiorespiratory and other problems. This study aimed to explore professionals’ views regarding prenatal counselling in CDH.

Methods
A qualitative study was performed among healthcare professionals involved in the care of CDH patients in Radboud university medical center Amalia Children’s Hospital. Semi-structured interviews were conducted until saturation was achieved. Transcripts were qualitatively analysed to gain insight into professionals’ views regarding counselling.

Results
Eighteen professionals with various backgrounds were included. The professionals agreed that the first counselling session should be soon after diagnosis and additional sessions should be offered. Concerning counselling content, participants considered explanation of the diagnosis, prognosis, short- and long-term consequences, treatment options and practical aspects important. As for decision-making about possible termination of pregnancy, all professionals emphasised the importance of the parental role, but the preferred parental involvement varied. Regarding practical aspects, preferred counsellors were a neonatologist, obstetrician, paediatric surgeon and/or medical social worker. Participants emphasised that the counselling should be adjusted to parents’ needs.

Conclusions
This study gained insight into professionals’ views regarding the timeline, content, decision-making process, and practical aspects of prenatal counselling in CDH.
New Insights Into the Water Management System at Tetzcotzinco, Mexico
Authors: Prusaczyk Daniel , Juszczyk Karolina , Gracida Araceli Rojas Martínez 
Published: August 2023

Abstract
This work presents the results of new archaeological research carried out in Tetzcotzinco, Mexico, with a special focus on its water management. Survey documentation at the site, with the use of 3D photogrammetry, offered new images and maps of water control features, namely, canals, reservoirs, and aqueducts. The integration of these data into a GIS database, as well as the complementation of information from previous archaeological research and colonial historical accounts, allowed further analysis of the flow, velocity, and quantity of water distributed at the site, and its possible connections with watercourses in its surroundings. This research studies the broader regional water sources and three possible courses of water in the area which could have provided the flow of liquid into Tetzcotzinco. This article is a contribution to a better understanding of the importance of water and its distribution not only in Tetzcotzinco but also in the Center of Mexico during pre-Hispanic times.
The in-group ritual of self-denigration in Iranian doctoral defense sessions: applied linguists’ attitudes, functions and perceptions in focus
Authors: Mayahi Nadia , Jalilifar Alireza 
Published: August 2023

Abstract
Drawing on a Symbolic Interactionist perspective and the Grounded Theory methodology, this study aimed to explore self-denigration from the perspective of Iranian applied linguists highlighting the significance of self-denigration as an in-group relational ritual in Iranian doctoral defense sessions. The data were obtained from rigorous coding of the transcripts of two focus groups and a questionnaire built on the findings of the focus group discussions. The findings indicated significant gender differences in terms of the participants’ attitudes toward the functions and meanings of self-denigration. Academic experience was also found to be an important factor in how the participants perceived self-denigration. Through a meticulous analysis of self-denigration in doctoral defense sessions, the present study sheds light on the norms and conventions of the academic discourse of defense sessions, thereby justifying the rights and obligations of the defense session participants.
ISM AL-MA’RIFAH (NOMINA DEFINIT) BERKASUS NASBH (AKUSATIF) DALAM AL-QUR’AN SURAT AL-BAQARAH
Authors: MIGA ADHEN CITRA , KUSWARDONO SINGGIH 
Published: August 2023

This study aims to determine the types, functions, and grammatical markers of ism ma'rifah in the accusative case in Surah al-Baqarah. This research is a qualitative research with library research design. The data of this research are the ism ma'rifah in the accusative case that comes from surah al-Baqarah. The data collection technique used the watch-note technique and the instruments used were the researchers themselves, data cards, and recapitulation sheet. The data analysis technique used the distributional method with the technique for direct elemental. Of the 100 data samples analyzed by the researcher based on their type, it was found 7 data type of ism 'alam, 34 data type of ism dhamir, 15 data type of ism maushul, 1 data type of ism isyarah, 19 data type of ism al-ma'rifah with the particle Alif lam (ال), 19 data type of ism al-ma'rifah with idhafah construction, and 5 data are of the type of ism al-ma'rifah with nida particles. Based on the syntactic function, it is found that 1 data functions as khabar Kana, 18 data functions as isim inna, 62 data functions as maf'ul bih, 1 data functions as maf'ul muthlaq, 1 data functions as maf'ul li ajlih, 1 data functions as mustastna, 5 data functions as munada, 1 data functions as chal, 5 data functions as na’at, 3 data functions as ma'thuf, 1 data functions as badal. Based on the grammatical markers, it was found that 38 data had the grammatical marker fathah, 1 data had the grammatical marker kasrah, 3 data had the grammatical marker ya', 5 data had the grammatical marker fathah muqoddarah and 53 data had the grammatical marker mabniy fii machal an-nasbiy.
Influence of growth and metabolic markers on hs-troponin T and NT-proBNP levels in healthy children
Authors: Kiess Alexandra , Green Jessica , Willenberg Anja , Ceglarek Uta , Dähnert Ingo , Kiess Wieland , Vogel Mandy 
Published: August 2023

Background and objectives
As part of the LIFE Child study, we previously described the associations between N-terminal-pro-hormone brain natriuretic peptide (NT-proBNP) and hs-troponin T (hs-TnT) levels and an individual’s sex, age and pubertal status, as well as with body mass index (BMI) and serum lipid levels. For NT-proBNP, we found inverse associations with advancing puberty, increasing BMI and serum lipid levels. These findings led us to further question the putative influences of the developing individual’s metabolic and growth status as represented by levels of insulin-like growth factor-1 (IGF-1) and IGF-1-binding protein-3 (IGF-BP3) as well as hemoglobin A1c (HbA1c) and Cystatin C (CysC).

Material and methods
Serum values, medical history and anthropometric data provided by 2522 children aged 0.25–18 years were collected and analyzed as per study protocol.

Results
A strong negative association between NT-proBNP values and IGF-1, IGF-BP3 and HbA1c levels was identified. For IGF-BP3, this interaction was modulated by sex and age, for HbA1c only by age. For hs-TnT, a positive association was found with IGF-BP3, IGF-1 and CysC. The association between hs-TnT and IGF-1 was sex dependent. The association between CysC and hs-TnT was stronger in girls, but the interaction with age was only seen in boys. Between hs-TnT and HbA1c, the association was significantly negative and modulated by age.

Conclusion
Based on our large pediatric cohort, we could identify age- and sex-dependent interactions between the metabolic status represented by IGF-1, IGF-BP3, CysC and HbA1c levels and the cardiac markers NT-proBNP and hs-TnT.
The process of developing professional capacity for teachers
Authors: Ho Van-Thong , Tran Van-Dat , Nguyen Van-De , Phan Trong-Nam , Cao Thanh-Hung 
Published: August 2023

The primary aim of Vietnam's new educational program is to enhance students' knowledge and skills through practical learning experiences, enabling them to tackle academic and real-world challenges. However, teachers in Dong Thap province face limitations in their professional competencies. Thus, this study aims to address these issues by examining different models for developing teachers' professional competencies. 1,116 participants participated in this study (258 managers and 868 teachers from high schools and preschools) who completed two questionnaires assessing their professional competence and the perceived importance of professional development. The findings reveal that teachers lack subject knowledge, interdisciplinary understanding and skills in teaching design and assessment. Both school managers and teachers recognize the necessity of professional competence development. A three-step process for enhancing teachers' professional competence is proposed for implementing professional development activities based on these findings.
Green’s function in general relativity
Authors: Kurihara Yoshimasa 
Published: August 2023

Abstract
This report provides Green’s functions (classical propagators) of gravitational fields of vierbein and spin-connection in general relativity. The existence of Green’s function of the Laplace operator in curved space with an indefinite metric is ensured owing to the Hodge harmonic analysis. The analyticity of Green’s function is naturally determined intrinsically, keeping a causality. This report proposed a novel definition of the momentum space in curved space-time and the linearisation of the Einstein equation as a free field consistent with that for the Yang–Mills gauge field. The proposed linearisation does not utilize the weak-field approximation; thus, the method applies to highly caved space-time. We gave two examples of Green’s function of gravitational fields, the plane wave solution and the Schwarzschild solution. PACS numbers: 03.65.Sq,04.60.Bc,04.62.+v
Designing an activated sludge reactor to convert polluting gases from refinery effluent into biofertilizer
Authors: Saki Hojjat , mahdavian leila 
Published: August 2023

Abstract
The purpose of designing a suitable laboratory reactor is to convert polluting gases from refinery effluent into biofertilizer. The activated sludge reactor designed in this research includes a cube-shaped tank made of glass with a volume of 5 L and the volume of the sedimentation pond was considered to be 5 L. The design of experiments using the method of one variable in each step. The effect of different parameters and concentrations of variables (inoculum concentration (0.1, 0.15 and 0.2 g.L− 1), ammonium sulfate concentration (0.1, 0.3 and 0.5 g.L− 1) and sodium phosphate ( 0.1, 0.3 and 0.5 g.L− 1) are measured separately on the amount of wastewater treatment. Wastewater treatment tests are investigated in a period of 14 days, and biological treatment of wastewater (BOD) and total organic carbon (TOC) are reduced by 71.27 and 48.98%, respectively. The results show that with the reduction of total dissolved solid (TDS), the electrical conductivity (EC) of water decreases by 48.58%. During this period, the concentration of H2S, NH3, CH4, and CO2 gases in the effluent has shown a decreasing trend, which has decreased by 30.08, 60.25, 71.42, and 80.95%, respectively.
A preliminary investigation on the operational efficiency of centrifugal pumps operating in single-branch, single-pump systems
Authors: Pellegrini Claudio de Castro , Pedrera-Yanes Jacqueline , Llanes-Santiago Orestes , Vilalta-Alonso Guillermo 
Published: August 2023

Abstract
Pumping systems are among the most energy-consuming applications, making its efficient operation a matter of great relevance. In recent years, efforts to improve the efficiency of these systems have followed two approaches. The first involves the design and development of new efficient pump models, in studies primarily based on the internal flow behaviour and impeller geometrical parameters. This approach, albeit useful, does not consider whether these efficient pump models have been correctly selected. The second approach addresses the energy-saving potential achievable through the pumping system itself, including the proper pump selection, which is a research area that still offers opportunities for improvement. The primary objective of this work is to create a methodology to identify whether a pump has been efficiently selected for a given hydraulic system. To achieve this, the two main criteria currently used for evaluating the efficient selection of pumps are discussed: the POR-Q and the POR-η. The results demonstrate that the proposed methodology correctly identifies high-efficiency pumps for operating in a given system. It is shown that the flow rate interval where the pump can operate with high efficiency, as determined by the POR-η criterion, is wider than the interval obtained using the POR-Q criterion. This expansion in the available range of pump operation using the POR-η criterion allows for greater availability of pumps that meet the system requirements and respond well to energy-saving strategies. This finding enables a wider choice of pumps, thereby facilitating the decision-making process.
Traditional smoking of wallachian cheeses and could cuts in Polish and Slovak parts of the Carpathian Mountains
Authors: Migdał Władysław , Marcinčák Slavomír , Walczycka Maria , Domagała Jacek , Pluta-Kubica Agnieszka , Filipczak-Fiutak Magda , Migdał Anna , Migdał Łukasz 
Published: August 2023

Abstract
Wallachian expansion brought to the Carpathian Mountains a system of shepherd economy - farming, production of Wallachian cheeses, animals adapted to life in difficult mountain conditions - mainly sheep of the Cakiel breed group. Mountain sheep's milk is used to produce traditional cheeses: bundz, bryndza podhalańska, oscypek, redykołka - on the Polish side and Slovenská bryndza, Slovenská parenica, Slovenský oštiepok, Ovčí hrudkový syr salašnícky - on the Slovak side. From sheep meat are made sausages. These cheeses and sausages are salted and then traditionally smoked with warm smoke. The source of heat and smoke is hard wood with appropriate humidity, burned in the hearth located in the shepherd's hut, over which the cheeses are placed under the roof. Among several hundred smoke components, there are also polycyclic aromatic hydrocarbons, which, on the one hand, give the smoked product its taste and aroma, and on the other hand have carcinogenic and mutagenic properties. Sausages and cheeses from Poland and Slovakia, made from milk and meat of native sheep breeds, preserved by traditional smoking, were analyzed for polycyclic aromatic hydrocarbons content. The analyzed cheeses were characterized by a trace or low content of benzo[a]pyrene and the sum of benzo(a)pyrene, benzo(a)anthracene, benzo(b)fluoranthene and chrysene. In cheeses from outer Eastern Carpathians subprovince (Bieszczady) the high content of naphthalene, acenaphthylene, fluorene and phenanthrene is noteworthy. Polish lamb sausages were characterized by a higher content of benzo(a)pyrene and the sum of benzo(a)pyrene, benzo(a)anthracene, benzo(b)fluoranthene and chrysene. The differences result from the method of smoking (warm or cold in the south of the Carpathians - hot in the north) and the type of wood used for smoking.
A Novel Z-Scheme Ni3V2O8/AgI Visible Light Photocatalyst with Enhanced Photocatalytic Activity
Authors: Arumugam Swaminathan , Bavani Thirugnanam , Preeyanghaa Mani , Neppolian Bernaurdshaw , Choi Myong Yong , Arunachalam Prabhakarn , Periyasami Govindasami , Madhavan Jagannathan 
Published: August 2023

Abstract
The newly developed Z-Scheme Ni3V2O8/AgI visible light photocatalytic heterojunction composite system was fabricated using wet chemical technique with different weight percentages 10, 20, and 30% of Ni3V2O8 for the destruction of (RhB) Rhodamine-B. The purely isolated photocatalyst was further investigated through XRD, UV-vis DRS, TEM, FT-IR, PL, SEM, HRTEM, EDS, and photocurrent measurements. The Ni3V2O8/AgI nanocomposite degraded 82% of RhB with a higher reaction rate coefficient value of 0.0603 min–1 than the other synthesized photocatalysts. The results showed that Z-Scheme heterojunction formation has improved the partition and migration of charged particles leading to intensification in photocatalytic activity when compared to individual photocatalysts. The optimized 20% of Ni3V2O8 nanocomposite was reused three times without any change in photocatalytic performance, which confirmed the stability of the optimized nanocomposite photocatalyst Ni3V2O8/AgI. The outcomes of the radical trapping experiments suggested that radicals •OH and O2•− play a part in RhB degradation. Based on this, a visible light photocatalytic heterogeneous Z-Scheme mechanism is proposed. As a result, the newly fabricated Z-Scheme heterojunction Ni3V2O8/AgI photocatalyst could be a robust material for treating RhB water.