bluuebunny/crossref_metadata_2025 huggingface dataset:
La formación para la investigación en Ciencias de la Educación
Authors: Flores Miriam Liset , Bar Aníbal Roque
Published: December 2023

El presente trabajo tiene como objetivo reconstruir los procesos formativos orientados a la investigación que se expresan durante el grado universitario argentino en la carrera de Ciencias de la educación desde la perspectiva de los equipos de cátedra. Metodológicamente asumimos el estudio de casos, reconstruidos mediante análisis documental, entrevistas en profundidad y observaciones de clase. En este sentido, se presentan dos equipos de cátedra con funciones de docencia e investigación de la carrera de Ciencias de la educación, pertenecientes a: Historia Argentina de la Educación y Didáctica I. Los resultados aportan a la identificación de un territorio electivo durante la formación de grado universitario, al que denominamos Aula de iniciación en la investigación, ámbito en el que estudiante se introduce gradualmente en la praxis real de la ciencia en compañía de un equipo con funciones en docencia e investigación.
Influencias del Manual Didáctico Chileno para la enseñanza de la probabilidad y la Estadística en los primeros años de la enseñanza básica
Authors: Piccoli João Pedro , Souza de Alencar Edvonete , Danilo Díaz-Levicoy
Published: December 2023

El libro de texto es una herramienta muy utilizadapor docentes y alumnos en el ámbito escolar. Todasestas colecciones cuentan con un manual didáctico,disponible para acceso sólo a los maestros. Así, lapresente investigación buscó develar el conocimientoespecializado del manual didáctico chileno para la enseñanza de Probabilidad y Estadística en el primer y segundo año de la primaria, en el que se matriculanregularmente alumnos de seis y siete años. La comprensión de estos conocimientos, así como susinfluencias, permite al educador identificar las posibles dificultades que los estudiantes pueden adquiriren el aprendizaje de esta área temática. En consecuencia, será más fácil establecer estrategias queminimicen estos impactos. El estudio se realizó en forma de investigación documental, centrándoseen la colección Sumo Primero (2022). El referencial se basó en el modelo teórico del MathematicsTeacher’s Specialized Knowledge, que categorizó el conocimiento especializado del profesor dematemáticas en seis subdominios principales. Mediante el estudio y análisis del mencionadomanual, se buscó identificar los conocimientos que más se destacaban, según la clasificación delas partes indicadas según las normas del mencionado modelo. Como resultado, el subdominiomás evidente fue el Conocimiento de los Parámetros de Aprendizaje de las Matemáticas y elque menos prevaleció fue el Conocimiento de la Estructura de las Matemáticas. Se espera queesta investigación contribuya a la formación de docentes, a fin de constituirse también para elpensamiento de nuevas investigaciones.
THE DIDACTIC MENTOR'S KIT. THE EFFICIENCY OF THE MENTORING ACTIVITY
Authors: Chișiu Carmen Maria
Published: December 2023

In a mentoring program, two characters are necessarily involved: the mentor and the mentee. In order to achieve an effective, authentic mentoring process, one must start from the intersection of the answers to two questions: What do I expect from the mentor/mentee and What do I bring to the mentoring process? In addition to personality and professional traits, the mentor teacher has to prepare and use a series of working tools, a mentor's kit, which in a general form we will present in this work paper and which need to be adapted according to the needs of the mentee and the school institution. The tools in the mentor's kit were presented and offered for use to the 293 teachers, participants of the Prof I and II course, in two modules. In short research survey we introduce present the views of the mentors who used them.
ANALYSIS OF DIFFERENTIAL ITEM FUNCTIONING OF NATIONAL EXAMINATIONS COUNCIL AGRICULTURAL SCIENCE MULTIPLE CHOICE TEST ITEMS IN SOUTH EAST, NIGERIA
Authors: Olutola Adekunle Thomas , Ihechu Kelechi Joshua Princewill
Published: December 2023

The study examined the differential item functioning of National Examinations Council (NECO) Agricultural Science multiple choice test items (2015-2017) in South East Zone. The study adopted descriptive survey research design and ex-Post-Facto research design. Two null hypotheses were formulated and test in the study. The population of the study consisted of 10, 194 Agricultural Science students. Sample size of 728 Agricultural Science Senior Secondary School students (SSS III) were proportionately drawn from the 72 selected secondary schools that constituted the sample size of the study. A multi-stage sampling technique was used for the study. The instrument used for data collection was NECO paper III questions constructed in 2015-2017.The instrument was re-validated by experts in Educational Measurement and Evaluation and Agricultural Extension Education. The data obtained was analysed using Kuder Richardson Formular 20 with reliability indices of 0.76. Data obtained for the study were analyzed using the Scheuneman modified Chi-square statistic to analyze all the research questions and chi-square statistic was employed in testing the null hypotheses. Results showed that that Agricultural Science multiple-choice test items used in NECO 2015-2017, contain test items that significantlyfunctioned differentially for testees on the basis of gender and that there was no significant difference between male and female students on the percentage of items which functioned differentially in the 2015-2017 NECO Agricultural Science multiple choice test examination. It was thus recommended among others that test experts and developers should consider the use of Scheuneman modified chi-square in determining differential item functioning.
OPTIMIZING EVALUATION PRACTICES THROUGH RECONSIDERATION OF STUDENT ASSESSMENT STRATEGIES IN THE HYBRID UNIVERSITY ENVIRONMENT
Authors: Neacșu Mihaela Gabriela , Bucuroiu Florentina , Țibrian Mădălina , Sămărescu Nicoleta
Published: December 2023

The theoretical foundation of the research problem highlights both a series of choices and priorities of university trainers regarding the adoption of authentic assessing strategies enriched in the virtual environment, as well as certain limits, difficulties and costs entailed by computerized testing, some applications and electronic platforms, testing of new face-to-face assessment tools etc. The aim of the research was to identify those assessing strategies used by university trainers in the virtual environment, which have proven their effectiveness in the online assessment of students and which have been maintained and enriched to be applied in hybrid university training alongside other modern assessment techniques and tools. The research questions that guided the entire study were: What evaluative strategies did university trainers adopt in the virtual environment? What were the most effective assessment strategies adopted according to the specifics of the discipline, assessment objectives and competencies? How were hybrid assessment practices optimized by adopting the new distance assessment strategies? What preferences did students have in hybrid assessment? What advantages and disadvantages are highlighted in adopting such assessment practices? The research methodology brought together qualitative and quantitative research methods, techniques and tools. Main findings describe the particularities of the assessment at the end of the hybrid trainings, the specifics of the design of synchronous and asynchronous student evaluation tasks, the customization of assessment platforms used in electronic evaluation, the adoption of new assessment methods and the improvement of face-to-face assessment techniques and tools.
INCORPORATION OF ICT INTO EDUCATION: THE REQUIREMENT FOR EMERGING NATIONS TO COORDINATE ICT IN THE EDUCATING AND LEARNING OF MATHEMATICS SUCCESSFULLY
Authors: Onoshakpokaiye Odiri E.
Published: December 2023

The world is growing technologically in various circles of life; education is not left out. Countries are attempting to get together with this turn of events. In the education sector, many information communication technology devices have been invented to supplement the normal customary technique for education. Numerous soft wares can be applied in educating/learning. These ICT tools are utilized in the instructing and studying of mathematics that make it clearer and more practical for students to comprehend the concepts of mathematics. Regardless the benefits of technology to the teaching of mathematics, a few nations are yet to incorporate it in their schools most particularly the developing nations. Many developed nations have incorporated the ICT into their schooling however the vast majority of the developing nations are as yet lingering behind; it might be because of their administration's disregard for the significance of the ICT use. The study reviews some related literature on ICT use. The study looks at the meaning of ICT, ICT use and mathematics learning, ICT use and developing countries’ institutions, and the benefit of ICT usage and students’ performance in mathematics.
PREDICTIVE ESTIMATE OF OPENNESS TO EXPERIENCE AND SELF-EFFICACY ON EARLY YEARS TEACHERS’ PERCEPTION OF HANDS-ON MATERIALS FOR CLASSROOM TEACHING IN LAGOS, NIGERIA
Authors: Sopekan Oludola Sarah , Ejiogu Laureta Ifeoma
Published: December 2023

The study was carried out to examine the predictive estimate of openness to experience and self-efficacy on early years teachers’ perception of hands-on materials for classroom teaching in Lagos, Nigeria. The participants in the research were all the public and private elementary schools teachers in Lagos however snowball non-probability the sampling method was adopted to select 150 elementary school teachers as the sample. Three instruments titled Hands-on Materials Utilization Questionnaire (HOMUQ), Openness to Experience Questionnaire (OEQ) and Teacher Self-Efficacy Rating Scales (TSERS) were used to gather the needed data. Six research questions were raised while three null hypotheses were formulated. While the inferential statistics of Pearson Product Moment Correlation Statistic (PPMC) and T-test were employed to test the null hypotheses at a 0.05 level of significance, the descriptive statistics of frequency count, percentage, mean, and mean rank were utilized to answer the research questions. The findings of this investigation demonstrated that early year teachers believed that using hands-on materials was beneficial for teaching young schoolchildren in attendance; however, there is no correlation between early year teachers' perceptions of using hands-on materials in the classroom and their openness to new experiences (r-value = -.003, p-value = 0.484 > 0.05); there is no significant relationship between self-efficacy and early year’s teachers’ interpretation of how hands on materials in the lecture hall (r-value = -.016, p-value = 0.844 > 0.05); there is no significance difference in male and female early year teacher’s interpretation of how hands-on materials for classroom teaching (t-value = 1.873, p-value = 0.709 > 0.05). Considering the results, the following recommendations among others were made: Government and private school owners should provide adequate and effective hands-on material(s) and make it accessible to the early year’s teachers; Government and private school owners through the ministry of education should organize on regular basis seminar and or workshop to be training the earlier years teachers on how to use hands-on teaching material to deliver instruction in early years classroom.
Eco Friendly Synthesis of Silver Oxide Nanoparticles from Borassus Flabellifer Fiber and Its Antibacterial Activity Against Representative Micro Organisms
Authors: Vanitha R. , Kavitha C. , Ananda Kumar S.
Published: December 2023

The present study reports an easy eco-friendly, cost efficient, and rapid method for the synthesis of silver nanoparticles (Ag NPs) using palm sprouts as reducing cum capping agent. Green synthesis of silver nanoparticles was successfully performed using palm sprouts plant extract via a simple and cheaper eco-friendly method. Palm sprouts extract reduces silver nitrate to silver nanoparticles. The resulting materials were analyzed by Fourier-transform infrared spectroscopy (FTIR), Scanning Electron Microscopy (SEM), and X-ray Diffraction (XRD) analysis. FT-IR spectrum confirms the presence of various functional groups in the active biomolecules, it acts as a capping agent for the nanoparticles. The morphology of this sample was analyzed through SEM and the presence of silver was confirmed accordingly. The green synthesized Ag NPs exhibited an excellent antibacterial activity against E. coli and P. aeruginosa and B. subtilis and S. aureus besides imparting efficient antimicrobial activity against pathogenic bacteria as well.
Experimental Monitoring of Transition Zones in Railway Tunnels
Authors: Hodas Stanislav , Pultznerova Alzbeta , Vrchovsky Erik
Published: December 2023

The expert research activity of transition zones of tunnels is one part of the overall set of these places on the railway line. Typical places where the stiffness of the railway changes are the portals of tunnels, where undesirable deformations occur during the operation of trainsets due to the changes in materials. In the places of the portals, there can be a ballastless track or slab track (with concrete bearing layer) or classic structure with a railway ballast. The paper presents long-term research on monitoring height changes in these sections. The results of the expert activity will be the basis for the subsequent proposal of new measures, i.e. changes to built-in objects or modification of the materials of structural layers in a given place of the transition zone.
Investigation of the Flexural Behavior of Bacterial Concrete Beams
Authors: Hind Mohammed T. , Ali Ahmed S.
Published: December 2023

Bacterial self-healing concrete is an eco-friendly and superior treatment technique that has efficient bonding capacity and compatibility with concrete compositions. It is capable of filling deep microcracks and healing the crack autonomously by calcium carbonate precipitating phenomenon which results in sustainable construction materials. The purpose of this research is to investigate the use of microorganisms Bacillus Subtilis to improve the mechanical properties and the efficiency of self-healing of reinforced concrete beams for two types of concrete, reactive powder concrete (RPC), and lightweight self-compacting concrete (LWASCC), by two methods of addition (direct addition, and encapsulation). The experimental program consists of casting six simply supported beams tested under monotonic and repeated loading. Incorporate bacteria and the precursor (calcium lactate) in concrete mixtures show an improvement in compressive strength, splitting, and flexural strength by up to 21.74 %, 10.92 %, 21.21 % by encapsulation method, and 17.7 %, 18.0 %, 20.84 % by direct addition. In addition, there is an enhancement in the first crack load and ultimate load. Microscopical image demonstrated that calcium carbonates had been deposited in the crack up to 1.0 mm width by bacterial activity within 32 days.
Role of Real Estate Management Firms Toward Sustainability in India
Authors: Sanchaniya Rashmi Jaymin , Asif Suraiya Abdul Siyad , Geipele Ineta
Published: December 2023

Today, sustainable real estate management is an essential and timely issue. Real estate is one of an enterprise’s most valuable assets, and its appropriate management is a prerequisite for attaining a competitive edge. Modern real estate management should incorporate aspects that reflect market demands, environmental issues, the user wants, and the business environment sustainably. This study studies and analyses the elements influencing sustainable real estate management practises in India. This study acquired primary data from both residents/users of real estate and market actors. The research employs a combination of qualitative and quantitative methodologies, including case studies of the real estate management market and literature reviews on sustainable real estate management, as well as structured observation and surveys with closed-ended questions. The data indicate that the environmental element, which is the least developed among Indian real estate management firms, has the greatest influence on the overall sustainability of real estate management organisations. This should be the focus of the proposals, allowing real estate management businesses to highlight their environmental sustainability practises as the foundation for adopting of the idea of sustainable real estate management in India.
Investigation of the Most Positions Affected in Rail Track When the Modulus of Elasticity of the Ballast Layer is Changed
Authors: Alani Zaman , Mohammed Adnan Q. , Zaidan Maysloon
Published: December 2023

The railway is one of the cheapest methods to transport people and heavy goods. It is safer than highways. In Iraq, many railways connect the south country with the middle and north, which are old, damaged, and need to continued maintenance. Iraq needs to construct new lines of the rail track with low-cost, less maintenance, and highly stable structure, which requires understanding the behavior of rail track under train loads and the pattern of distribution of deformations, stresses, and strains inside the body of rail track and know the layer which more effected by changing the strength of ballast layer by change modulus of elasticity of it. This paper investigates the influence of modulus of elasticity of the ballast layer on the behavior of railways and the positions of deformation, stresses, and strains in the rail track which is most affected by the change in the modulus of elasticity and the value of the effect. The finite element approach was considered in this study using Abaqus Ver. 6.14-4 program. The investigation outcomes displayed that when the ballast layer’s modulus of elasticity E increase by 100 MPa, the value of deformation in the rail track is affected in all layers, and the value of decreased is 6.8 % for rail, 6.9 % for ballast, and 6.7 % for the sub-ballast layer. Therefore the strain of the sub-ballast layer is affected by the change modulus of elasticity of the ballast layer more than other ballast and subgrade. Also, the result shows that stresses in the rail are the only part of the rail track affected by the change in the ballast layer’s modulus of elasticity E, while the other layers are unaffected. So the increase in E of the ballast layer affects the layer beneath it, which is the sub-ballast layer.
Pyrolysis of Domestic Sewage Sludge: Effect of Process Parameters on Biochar Calorific Value
Authors: Al-Hamaiedeh Husam , Aljbour Salah H. , El-Hasan Tayel , Almrayat Tuqa , Al-Ghazawi Ziad
Published: December 2023

This research aims to look into a sustainable technique for the treatment, reuse and disposal of domestic sewage sludge (DSS). The purpose of the study was to examine the operating factors that influence the calorific value of the produced biochar from the pyrolysis of DSS. Based on the analysis of the full factorial design, the impacts of the pyrolysis conditions, specifically: temperature, heating rate, and isothermal time on the calorific value of biochar were evaluated. When the pyrolysis temperature was raised from 300 to 500 oC, the calorific value of biochar was decreased by 34%. A 14% decrease in the calorific content of the biochar was also noticed when the heating rate was increased from 5 to 35 oC/min. When the isothermal time was increased from 45 to 120 minutes, the calorific value of the biochar remained essentially unchanged. No interaction effects among process variables were found using the factorial design methodology. A first-order regression model was developed to predict the calorific value of biochar using the magnitude of the effects of the process factors and their interactions. The model predictions agreed very well with the obtained experimental results.
Used Isolation System to Reduce the Response of Offshore Structure Considering Soil Structure Interaction
Authors: Hasan Abdulameer Qasim , Younus Yahya Mohammad
Published: December 2023

Fixed offshore platforms are structures of steel or concrete located in the middle of the sea used to export oil, trade, or military. These are designed to withstand all types of weather and dynamic loads. The response was very high under applied these loads. This paper includes a proposal to apply a new isolation system to be placed in different places on the offshore platform to reduce vibrations from high water waves. Three cases that be used, fixed-based (column connect directly to the pile), isolation system in the pile head (isolation between column and pile), and isolation system in the pile head and the middle of columns. The dynamic movements in waves were simulated using ABAQUS programs. More accurate elements and real material properties were used to bring the results closer to reality. The Computational Fluid Dynamics (CFD) method was used to study the effect of water-structure interaction and soil-structure interaction. The results show that the use of the isolation system at the base of the offshore platform has a very significant effect on decreasing the response of the platform to the loads placed on it. Where the isolation system works as a hinge at the pile head and is not allowed to move and rotate for the pile, also the moments are zero. As for the shear force, it is the least that can be compared with the other cases.
Body Characteristic of Drones of Different Origin
Authors: Sabo Rastislav , Sabová Lucia , Galajda Richard
Published: December 2023

Computer-based methods help beekeepers and scientists in apidology and bee research. Using software Optika Vision Pro in this study, three body morphological characteristics has been applied to honeybees’ drones (Apis mellifera carnica) of different origin in identification of difference among them. All three measured body morphological characteristics (body length, forewing length, and head length) were statistically different between drones originated from colonies with mated queens and drones originated from colonies with unfertilised queen and/or with unfertilised worker bee(s), respectively, thus making them potentially more successful in queen fertilization and secondary colony development and productivity.
Ethnic Segregation and Immigrants’ Labor Market Outcomes: The Role of Education
Authors: Lou Tian , Song Tao
Published: December 2023

Given the conflicting findings about whether ethnic segregation benefits or hurts immigrants’ labor market outcomes in the existing literature, this paper investigates how segregation effects vary within young immigrants’ education levels. We also test the differential segregation effects for young immigrants with different education levels and from ethnic groups with different average education levels. We find that on average, ethnic segregation negatively impacts earnings of highly educated immigrants but benefits lower educated immigrants. Additionally, the net effects of ethnic segregation depend on whether immigrants’ own education levels match their group average education levels. Specifically, being segregated with many highly educated co-ethnics can reverse the negative segregation effects on highly educated immigrants’ earnings. However, a highly educated ethnic enclave can reduce the positive isolation effects for lower educated immigrants. Finally, we do not find significant segregation effects on immigrants’ employment.
Understanding the Consumer Dynamics of AI in North Macedonian E-Business
Authors: Josimovski Saso , Ivanovska Lidija Pulevska , Dodevski Darko
Published: December 2023

Research Purpose

This study investigates the dynamics of Artificial Intelligence (AI) in e-business, particularly from the perspective of consumers in North Macedonia. The research aims to identify and evaluate the benefits and challenges of AI integration in e-business, explore the ethical concerns related to AI decision-making, and understand the impact of AI on consumer behaviour and preferences.

Design/Methodology/Approach

The research adopts a mixed-methods approach, integrating qualitative and quantitative analyses. Primary data was collected via a structured questionnaire distributed among various demographic groups to gauge the level of awareness and experiences with AI in e-business. A range of statistical tests, including ANOVA and correlation tests, were employed to assess the significance of the data collected and to test a set of hypotheses concerning consumer perceptions and experiences of AI.

Findings

The results reveal that demographic factors such as age, status, education, and occupation do not significantly impact the level of understanding, awareness, or experiences with AI among Macedonian consumers. Participants exhibited a level of high awareness of the importance of AI in e-business and rated their shopping experiences with AI more positively than traditional methods. Trust and reliability in AI did not significantly differ across demographic lines. The findings of this study have significant policy implications, especially in guiding the ethical and responsible integration of AI in e-business. They suggest a need for policies emphasising consumer data protection and privacy, given the heightened awareness and concern among consumers regarding using their personal information. Furthermore, the results advocate for the development of regulatory frameworks that ensure transparency and fairness in AI algorithms, addressing potential biases that could negatively impact consumer trust.

Originality/Value/Practical Implications

This research contributes novel insights into the Macedonian consumer market’s perception of AI in e-business, a topic scarcely covered in existing literature. The findings underscore the necessity for businesses to adopt AI responsibly and ethically, highlighting the importance of prioritising fairness, privacy, and transparency to leverage AI’s full potential in e-business. This study stands out in its exploration of AI in e-business from the consumer perspective in North Macedonia, a context not extensively covered in existing literature. The originality of our research lies in its focus on a comprehensive range of consumer-centric factors, including awareness, experiences, ethical concerns, and behaviour related to AI in e-business.
Impact of gut microbiota and associated mechanisms on postprandial glucose levels in patients with diabetes
Authors: Feng Xinyuan , Deng Mingqun , Zhang Lina , Pan Qi
Published: December 2023

Diabetes and its complications are serious medical and global burdens, often manifesting as postprandial hyperglycemia. In recent years, considerable research attention has focused on relationships between the gut microbiota and circulating postprandial glucose (PPG). Different population studies have suggested that PPG is closely related to the gut microbiota which may impact PPG via short-chain fatty acids (SCFAs), bile acids (BAs) and trimethylamine N-oxide (TMAO). Studies now show that gut microbiota models can predict PPG, with individualized nutrition intervention strategies used to regulate gut microbiota and improve glucose metabolism to facilitate the precision treatment of diabetes. However, few studies have been conducted in patients with diabetes. Therefore, little is known about the relationships between the gut microbiota and PPG in this cohort. Thus, more research is required to identify key gut microbiota and associated metabolites and pathways impacting PPG to provide potential therapeutic targets for PPG.
Global lineage evolution pattern of sars-cov-2 in Africa, America, Europe, and Asia: A comparative analysis of variant clusters and their relevance across continents
Authors: Hyug Choi June , Sook Jun Mee , Yong Jeon Jeong , Kim Hae-Suk , Kyung Kim Yu , Ho Jeon Chang , Hwan Choi Seock , Sun Kim Dong , Han Man-Hoon , Won Oh Ji
Published: December 2023

Objective

The objective of this study is to provide a comparative analysis of variant clusters and their relevance across Africa, America, Europe, and Asia, in order to understand the evolutionary patterns of the virus across different regions and to inform the development of targeted interventions and genomic surveillance eforts.

Methods

The study analyzed the global lineage evolution pattern of 74, 075 severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) genomes from 32 countries across four continents, focusing on variant clusters and their relevance across regions. Variants were weighted according to their hierarchical level. The correlation between variants was visualized through Dimensionality reduction analysis and Pairwise Pearson's correlation. We presented a reconstructed phylogenetic tree based on correlation analysis and variant weights.

Results

The analysis revealed that each continent had distinct variant clusters and different evolutionary patterns. The Americas had two clustered variants before lineage divergence and a downstream confluence lineage, Europe had bifurcation into two global lineages with an early occurrence of certain cluster while Asia had a downstream confluence of two large lineages diverging by two distinct clusters. Based on the cluster patterns of shared variants of the SARS-CoV-2 virus, Africa demonstrated a relatively clear distinction among three distinct regions.

Conclusions

The study provides insights into the evolutionary patterns of SARS-CoV-2 and highlights the importance of international collaboration in tracking and responding to emerging variants. The study found that the global pandemic was driven by Omicron variants that evolved with significant differences between countries and regions, and with different patterns across continents.
Exosomes and their derivatives as biomarkers and therapeutic delivery agents for cardiovascular diseases: Situations and challenges
Authors: Xu Yunyang , Wan Weimin , Zeng Huixuan , Xiang Ze , Li Mo , Yao Yiwen , Li Yuan , Bortolanza Mariza , Wu Jian
Published: December 2023

Microvesicles known as exosomes have a diameter of 40 to 160 nm and are derived from small endosomal membranes. Exosomes have attracted increasing attention over the past ten years in part because they are functional vehicles that can deliver a variety of lipids, proteins, and nucleic acids to the target cells they encounter. Because of this function, exosomes may be used for the diagnosis, prognosis and treatment of many diseases. All throughout the world, cardiovascular diseases (CVDs) continue to be a significant cause of death. Because exosomes are mediators of communication between cells, which contribute to many physiological and pathological aspects, they may aid in improving CVD therapies as biomarkers for diagnosing and predicting CVDs. Many studies demonstrated that exosomes are associated with CVDs, such as coronary artery disease, heart failure, cardiomyopathy and atrial fibrillation. Exosomes participate in the progression or inhibition of these diseases mainly through the contents they deliver. However, the application of exosomes in diferent CVDs is not very mature. So further research is needed in this field.
What can a cryptogenic stroke hide in a young patient?
Authors: Cepoi Maria-Ruxandra , Vrabie Ioana Theodora , Ponor Cosmina , Nicolae Ana , Spiridon Marilena Renata , Petriș Antoniu Octavian , Costache Irina Iuliana
Published: December 2023

Introduction

Left ventricular hypertrabeculation is a recently described ventricular phenotype characterized by the alternation of excessive trabeculations with deep intertrabecular recesses that communicate with the left ventricular cavity but not with the coronary circulation.

Case presentation

We report the case of a young patient, recently diagnosed with ischemic stroke, in whom the cardiological assessment revealed the coexistence of left ventricular hypertrabeculation and dilated cardiomyopathy, which pathologies associated with a high risk of embolic events. The treatment administered followed the therapy for chronic heart failure, control of rhythm disorders that might occur, and the prevention of embolic accidents.

Conclusions

The particularity of the case is represented by atypical onset through a complication of the disease in a cardiovascular paucisymptomatic patient. Multimodal imaging corroborated with clinical and anamnestic elements had an essential role in the diagnosis.
Lärarstudenters förutsättningar att utveckla yrkesspecifika kunskaper
Authors: Forslund Frykedal Karin
Published: December 2023

This study aims to investigate how the courses in didactics of mathematics in preschool and primary teacher education create conditions for preservice teachers to develop professional knowledge in an interactive learning process that integrates the knowledge domains of mathematical subject knowledge and pedagogical mathematical knowledge. An analysis of 20 course documents and 8 focus group interviews with students have been done. The results show that the intentions in the documents create conditions for the students to develop mathematical subject knowledge. Still, they were given inferior conditions for pedagogical mathematical knowledge. In the focus groups, perceptions emerged among the participants about a changed view of mathematics during the education, from being an abstract theoretical subject to a subject to be explored and discovered through various practical exercises and activities. As support for transferring their newly discovered perception, it is important that the students participate in core practices to bridge the gap between theoretical and practical knowledge in teacher education. The continued development of such core practices, in which student teachers can integrate professional knowledge and skills into their education, is an important implication of this study.
Role of Food System Planning in Facilitating Local Food Procurement for School Meals
Authors: Blomley Elina , Soma Tammara , Callihoo Christine , Han Richard , Páez-Varas Claudia , Bodnar Chris , Li Belinda
Published: December 2023

Farm to School (F2S) programs seeks to connect students with their local food system and community. Providing local food to schools, however, relies on the continuity of local food production in British Columbia (B.C.), as well as the capacity and willingness of farmers to support this “alternative market.”  Planners have an important role to play in supporting farmers’ ability to sustain local food systems. At the provincial level, planning for farmland preservation through the Agricultural Land Reserve has helped to secure some of the farmland needed to support local food production into the future. However, preserving farmland is only one part of the solution to sustain local food systems. Drawing upon key informant interviews (n=21), this paper identifies planning-related barriers and opportunities for local food procurement in schools. This research emphasizes the invaluable roles that farmers, government, and planners can play in reimagining a just and sustainable food system transition.
Asthma and food allergy: A nuanced relationship
Authors: Stukus David R. , Prince Benjamin T.
Published: December 2023

Asthma is one of the most common chronic health conditions that affect children and adults. It is associated with many comorbid conditions, particularly those along the allergic spectrum, such as atopic dermatitis, allergic rhinitis, and food allergy. The relationship between asthma
and food allergies involves prognosis, management, and understanding of risk for severe reactions. Both conditions are heterogeneous and can change over time, which necessitates an individualized approach toward counseling and management. Long-standing associations of an increased risk for
food allergy fatality in individuals who have asthma is not as straightforward or concrete as previously believed. It is important for clinicians to have a current understanding of the evidence about the relationship between asthma and food allergy to participate in shared decision-making
and counseling with patients. This review will offer background and new perspective surrounding the nuanced relationship of asthma and food allergy.
Enhancing Quality Control of Packaging Product: A Six Sigma and Data Mining Approach
Authors: Ramadhani Resty Ayu , Fitriana Rina , Habyba Anik Nur , Liang Yun-Chia
Published: December 2023

Six Sigma is of paramount importance to organizations as it provides a structured and data-driven approach, fostering continuous improvement, minimizing defects, and optimizing processes to meet and exceed customer expectations. In response to the increasing defects of packaging product in a cosmetics industry in Indonesia, surpassing the speciﬁed 3% tolerance limit, this research conducts a thorough investigation into the root causes, corrective measures, and improvement proposals to elevate product quality. By leveraging the Six Sigma method and data mining techniques, the study systematically addresses the complexities associated with defect reduction in packaging for cosmetics product. The research methodology encompasses deﬁning the problem through SIPOC and Critical to Quality (CTQ) diagrams, measuring via control charts and sigma level calculations, and analyzing using tools like pareto diagrams, Apriori algorithms, ﬁshbone diagrams, and Fault Mode and Eﬀect Analysis (FMEA). Key ﬁndings reveal a notable correlation between spot defects and varying colors, leading to pearl defects as identiﬁed by the Apriori algorithm. FMEA identiﬁes critical failures, including suboptimal printing plate conditions, clumpy ink usage, and insuﬃcient operator attention to ink ﬁlling. The improvement stage proposes practical solutions, such as implementing alarms and buzzers, color-indicator-adjusted ink storage labels, and a structured form for cleaning and monitoring printing plates. These ﬁndings carry signiﬁcant implications, providing a tailored roadmap for enhancing the quality of cosmetic packaging. The anticipated implementation of proposed improvements aims to elevate customer satisfaction by addressing speciﬁc pain points in the production process. Furthermore, the research contributes valuable insights to the broader cosmetics industry, oﬀering eﬀective methodologies for defect reduction and quality enhancement in packaging processes.
Enhanced Unsteady Vortex Lattice Aerodynamics for Nonlinear Flexible Aircraft Dynamic Simulation
Authors: Düssler Stefanie , Palacios Rafael
Published: December 2023

Several modeling extensions and numerical improvements to the unsteady vortex-lattice method are discussed for the simulation of very flexible aircraft dynamics. In particular, fuselage aerodynamics are included by means of linear source panels, polar corrections are incorporated on the aerodynamics under potentially large deformations, and a new wake discretization scheme is derived to accelerate the computations. The theory behind each approach is detailed and successfully verified on representative test cases. The resulting modeling environment is then exemplified in a study of the flight dynamics of a flexible aircraft demonstrator model. Results indicate that, for large wing deformations, a noticeable effect of fuselage aerodynamic interference appears on the wing aeroelastic behavior. The polar corrections improve the drag estimations and allow capturing lift decrements due to stall onset at high induced angles of attack, which then affects the gust loads. The wake discretization scheme enables a reduction of the computational time for dynamic simulations on a full aircraft model by about 20% while keeping the arising error negligibly small.
Inclusivity in the Settlement of Investment Disputes: Making a Case for Local Communities
Authors: Kabré Rimdolmsom
Published: December 2023

This contribution examines the extent to which the Investor-State Dispute Settlement (ISDS) system takes into consideration the rights and interests of local African communities affected by investment disputes but are not parties to them. It argues that these communities receive unsatisfactory treatment, which often leads to their exclusion (or non-inclusion) from ISDS. The contribution goes further by exploring reforms likely to better protect these communities, increase their inclusion in ISDS as well as the legitimacy of the investment regime. The first part examines the raison d’être for inclusivity in investment arbitration and why it is important to talk about the inclusion of communities in investment adjudication. Zooming in on the case of African communities, the second part analyses the current participation of these communities in the settlement of investment disputes and attempts to demonstrate that this participation is limited and could lead to a partial or total denial of justice for affected communities, in other words, exclusion. The final part looks at some of the reforms and ideas that are currently being considered for better protection and inclusion of these communities.
User Satisfaction with Library Information Sources at the University of Limpopo, Turfloop Graduate School of Leadership.
Authors: Makgahlela Lefose , Mojapelo Lesiba Simon
Published: December 2023

Academic libraries function as the hearts of academic institutions. In fact, due to their role, some institutions call them Information Centers. The central purpose of academic libraries is to cater to the information needs of their patrons, most of whom are students at that institution. Patrons’ information needs must always be met to keep coming to the library. Furthermore, patrons must always be assured that their library is a centre of relevant information. If patrons are satisfied with the service, they are more likely to return for that library service. This study investigated the users’ satisfaction with the services offered to the University of Limpopo Turfloop Graduate School of Leadership (UL TGSL) students. The study adopted the quantitative research approach. Sixty-eight (68) TGSL students participated in this study. Collected data were analysed through descriptive statistics. The findings of this study revealed that TGSL students are dissatisfied with the library collection housed at the University of Limpopo academic library. The study also revealed that the information resources are unreliable and useless to the students' information needs. Based on the study's findings, it is recommended that the University of Limpopo, as the mother campus, should build a functional library equipped with experienced personnel and relevant information resources that will help TGSL students. The availability of such a library will help those staying or working around the campus access a reliable information hub, which will also boost the academic performance of the TGSL campus.
Hubungan Stres dan Emotional Eating dengan Kualitas Diet pada Mahasiswa Gizi IPB Tingkat Akhir
Authors: Anindya Shafa Putri , Ekayanti Ikeu
Published: December 2023

Penelitian ini bertujuan untuk mengetahui dan menganalisis hubungan antara stres dan emotional eating dengan kualitas diet dan asupan serta kecukupan zat gizi mahasiswa gizi tingkat akhir di Institut Pertanian Bogor. Desain penelitian ini merupakan studi cross sectional dengan jumlah subjek sebanyak 50 mahasiswa Gizi Masyarakat IPB tingkat akhir. Penelitian dilakukan secara online dari bulan Mei hingga Juni 2023. Tingkat stres diukur menggunakan instrumen kuesioner DASS 42 dan emotional eating diukur menggunakan AEBQ. Sebagian besar subjek mengalami stres ringan (34%) dan emotional undereating (EUE) (60%). Sebagian besar subjek tergolong dalam kategori HEI need improvement (70%). Hasil analisis menunjukkan bahwa stres tidak memiliki hubungan dengan emotional overeating (EOE) dan emotional undereating (EUE) (p>0,05). EOE dan EUE tidak memiliki hubungan dengan kualitas diet (p>0,05). Tingkat stres memiliki hubungan negatif dengan kualitas diet (p=0,000;r=-0,479). Tingkat stres memiliki hubungan positif dengan kecukupan energi (p=0,015;r=0,344), protein (p=0,004;r=0,396), dan lemak (p=0,005;r=0,388). EOE memiliki hubungan positif dengan asupan energi (p=0,020;r=0,329), protein (p=0,049;r=0,280), lemak (p=0,028;r=0,312), dan karbohidrat (p=0,019;r=0,330). Selain itu, diketahui EUE memiliki hubungan negatif dengan asupan protein (p=0,043;r=-0,288) dan asupan karbohidrat (p=0,028;r=-0,311).
Novas perspectivas no manejo da cirrose: foco na terapia com betabloqueadores não seletivos e o impacto na hipertensão portal
Authors: Oliveira Guilherme da Silva , Machado Luiza Preato , Penha Tainara Paula da Anunciação , Barros Gabriela Orsi Meireles de , Silva Elizandra Franciele Fernandes da , Lemos Larah Chabudt , Lemos Ana Clara Chabudt , Santos Erwalber Mendes dos , Bolzan Lara Gonçalves de Moraes , Silveira Amanda Carolina Zicatti da
Published: December 2023

Objetivo: Avaliar a efetividade da utilização de medicamentos Betabloqueadores Não Seletivos (BBNS) no tratamento de pacientes com cirrose hepática, incluindo complicações como hipertensão portal e sangramento por varizes esofágicas. Métodos: Revisão bibliográfica integrativa no PubMed Central (PMC) através da estratégia de pesquisa: (("Adrenergic beta-Antagonists"[MeSH]) OR (Nonselective beta-blockers) OR (Non-Selective Beta-Blockers) OR (Non-Selective β-Blockers) OR (Beta-Blockers) OR (β-Blockers)) AND ((Chirrosis) OR ("Hypertension, Portal"[MeSH])). Após a busca inicial, 174 estudos foram identificados, e submetidos a critérios de seleção. Após a aplicação de critérios de inclusão e exclusão, 14 artigos foram selecionados para compor este estudo. Resultados: Analisaram-se as duas principais abordagens para a prevenção de complicações decorrentes da cirrose, a intervenção farmacológica com BBNS, que demonstrou significativamente reduzir a chance de eventos adversos em comparação com a abordagem sem tal intervenção; e  a administração de Beta Bloqueadores Não Seletivos, que foi associada a essa redução de riscos, sendo influenciada por fatores como maior eficácia de tratamento, além de redução de eventos desfavoráveis e prevenção de complicações decorrentes da doença. Considerações Finais: Estudos sugerem maior eficácia ao utilizar tais intervenções, entretanto, ainda é necessário mais pesquisas para garantir a completa redução de danos para tais pacientes.
Petrographic and mineralogical study of the beach rocks of Souiria Laqdima coast, Morocco
Authors: Ezzahzi Salma , Abdellah Algouti , Ahmed Algouti , Baid Soukaina
Published: December 2023

Beach rock is an interesting and distinctive formation, especially in contrast to other types of rock formations. There is a geological formation that is very similar to this one in the Moroccan province of Souiria Laqdima which is located on the coast of the Atlantic. Given the lack of previous research and studies on this topic in Morocco, the objective of this project is to investigate and identify a selection of the beach rocks that can be found along the Atlantic coast. For that, some beach rock samples were collected along the shore of Souiria Laqdima located close to the mouth of Oued Tensift and then to go for quantitative mineralogical investigations namely XRD and XRF analysis. The diffraction spectra demonstrate the presence of components that were formed as a consequence of erosion in the hinterland. These elements include quartz, feldspars, ferromagnesians, some calcite and other phyllosilicates. Calcite, aragonite and magnesian calcite are all inherent elements; as a result, they are considered to be marine elements. Most of the clay minerals have a continental provenance and a detritic origin such as kaolinite, illite and chlorite; however, a specific percentage of these minerals has a diagenetic origin in this marine environment. The examination with X-ray fluorescence reveals the existence of both quartz and feldspar. However, it also contains a significant amount of calcite and even some magnesian calcite. The petrographic study allowed us to determine, first, the nature of the cement in the beach rocks which was found to be calcite and magnesia calcite in the majority of the samples and secondly, the traces of bioturbations as well as the action and contribution of the burrows, on the fixing of the pebbles and on the cementing of the beach rocks.