bluuebunny/crossref_metadata_2025 huggingface dataset:
Sleep Deprivation as a Risk Factor for Injuries in Athletes
Authors: Wojtczak Karolina , Skupińska Olga , Antczak Joanna , Fenrych Urszula , Lipska Julia , Hamerska Laura , Hamerska Julia , Bocianiak Bogumił , Ruta Damian , Kajka Anna
Published: August 2024

Introduction: In recent years, sleep deprivation has increasingly been recognized as a significant factor influencing athletic performance. The basal sleep requirement for healthy adults slightly differs from the sleep needs of individuals who regularly engage in sports.  Furthermore, athletes frequently experience sleep loss due to their active and busy schedules. The impact of insufficient sleep on physical and cognitive functions can significantly impair the body's functioning and lead to serious consequences.
Purpose of the study: The aim of the study was to emphasize the prevalence of sleep deficiency among athletes, demonstrate how insufficient sleep affects various body functions, and explore its impact on injury risk across different sports disciplines.
Materials and methods: A literature review was conducted using PubMed and Google Scholar. Articles were selected based on specific keywords and then assessed for their relevance and suitability for inclusion in this review.
Results: The findings indicate that athletes frequently experience sleep problems due to factors such as training schedules, stress, night performances, and travel, with individual sport athletes getting less sleep compared to those in team sports. Sleep deprivation negatively impacts physiological and cognitive functions and is significantly associated with increased injury incidence in sports like soccer, volleyball, and basketball, although results are inconsistent in swimming, cycling, and running, highlighting the need for further research considering factors like training load and individual sleep variability.
Factors behind two-year-old decline
Authors: Virdi Amrit
Published: August 2024

Falling number of children accessing funded entitlement down to demographic and eligibility changes which need fixes, say experts
Selective navigation: risk prediction cultures in criminal justice practices
Authors: Gundhus Helene O.I.
Published: August 2024

In his article ‘Selective incapacitation revisited’, Thomas Mathiesen (1998) addresses the dominance of a technical and scientific language associated with the risk prediction culture that originated from a criminological research community where risk is considered as objective and measurable. In this article I discuss how practitioners perceive these aspects of risk prediction. For policymakers, targeting means using thresholds to target groups of offenders, but for frontline officers, it means targeting an individual. The officer must set an individualised assessment against the aggregated assessments from risk predictions. I will analyse how this has manifested in three Norwegian risk assessment projects: the offender assessment system, risk assessment of violent extremism, and early intervention to prevent youth crime. This article contributes to the understanding of how the political aspects of risk impact practitioners, and how the concept of risk as an artifact is understood by practitioners. I will first present the context of selective incapacitation and the history of research in this field. I will then contextualise the different understandings of risk within policy and practice. The main section is an analysis of the three cases. I end by discussing how acknowledgement of the political aspects of risk can promote sensitivity around the use of risk assessment tools.
Is bitumen the key to the quality of the Monasterboice Stone Crosses?
Authors: Sevastopulo George , Stalley Roger , Sanders Ian
Published: August 2024

Abstract: The tenth-century high crosses at Monasterboice, with their remarkable panels of stone carving, are unusually well preserved compared with other monuments of the time. A clue to their durability recently came to light during examination of fragments of a small cross discovered at the site that are carved from sandstone impregnated with bitumen. If the major crosses at Monasterboice were carved from the same sandstone, as seems likely, the quality of the carving and its state of preservation might well have been enhanced by the bitumen acting as a weak binding agent and as a water repellent.
George Chapman's Musaean 'Light': Origin, Primordiality and Priority from The Divine Poem of Musaeus (1616) to Hero and Leander (1598)
Authors: Luis-Martínez Zenón
Published: August 2024

Abstract: Published in 1616, George Chapman's 'The Divine Poem of Musaeus' continued his programme of translations of the works by those Greek authors regarded in the Renaissance as the origins of Western poetry—Homer, Musaeus, and Hesiod. However, Musaeus's only extant poem, 'The Things Concerning Hero and Leander', is a short erotic epyllion composed towards the end of the fifth century ce. This poem had been the source of Christopher Marlowe's 'Hero and Leander' (1598) and of its continuation by Chapman himself in a second edition that same year. The present article investigates the circumstances of Chapman's return to his earlier subject, as well as his assumption of the outmoded hypothesis of Musaeus's identity as 'First of all Poets'. It also discusses the import of this assumption to his theory of poetry and to his practice as a poet and as a translator.
Unpacking the paradoxical impact of ethical leadership on employees’ pro-social rule-breaking behavior: The interplay of employees’ psychological capital and moral identity
Authors: Ahmed Mushtaq , Ishfaq Khan Muhammad
Published: August 2024

This study delves into the complex dynamics of ethical leadership’s influence on employees’ pro-social rule-breaking behavior, taking into account the mediating role of psychological capital and the moderating effect of moral identity. Using data collected from nursing staff in Pakistani hospitals and analyzed through PLS SEM, the study yielded unexpected results. Contrary to the initial hypotheses, the findings reveal a positive relationship between ethical leadership and employees’ pro-social rule-breaking behavior within organizational settings. Furthermore, the study identifies psychological capital as a key mediator in this relationship, while moral identity emerges as a crucial moderator. These results challenge the conventional perception of ethical leadership as an exclusively positive form of leadership and underscore its unintended consequences. Moreover, they underscore the significance of employees’ psychological processes and individual differences in unraveling this paradoxical relationship. These results have the potential to reshape how organizations view ethical leadership and consider the unintended outcomes it may generate. Future research can build upon these findings to explore the boundaries and contextual factors that influence the effects of ethical leadership, ultimately contributing to a more comprehensive understanding of leadership dynamics in diverse organizational settings.
Digital transformation in college libraries: The effect of digital reading on reader service satisfaction
Authors: Lu Yixin , Lin Shengguang
Published: August 2024

In the pursuit of digital transformation, college libraries have increasingly embraced the promotion of digital reading as a critical initiative. While numerous studies have delved into the strategies employed by college libraries in their digital transformation endeavors, there remains a lack of research elucidating the direct influence of digital reading on reader service satisfaction within these institutions. Drawing upon the service quality model, this paper aims to address this gap by examining the multifaceted influence of digital reading on reader service satisfaction in college libraries. By examining the various dimensions of digital reading services, this study employs the fsQCA approach to uncover specific combinations that contribute to heightened levels of reader service satisfaction. The results reveal three distinct configurations that can explain the high level of reader service satisfaction. By elucidating these critical relationships, this research not only provides a contribution to the research regarding the evolving role of college libraries but also provides practical insights for college libraries aspiring to realize digital transformation by promoting digital reading.
EMOTION et APPRENTISSAGE
Authors: BOTO SIMÉONE Nasolo Raoël
Published: August 2024

Cet article met en exergue l'interdépendance de l'émotion à l'apprentissage.Souvent mis de côté par les enseignants, cette dimension de l'apprentissage est à prendre en compte sous peine d'aggraver la situation des élèves en détresse scolaire.
Invalidation of an Ethical Code Concerning Professional Conduct in South African Government
Authors: Mahhumane Delani Milton
Published: August 2024

Professionalism is an intensely debated topic, and ethical and legal concerns are becoming more prevalent. The article's main question is whether conduct brought on by obedience of an ethical standard constitutes a legal infraction. Broadly, does it make sense for ethics to conflict with the law? It is necessary to consider the nature and characteristics of ethics as a preliminary step to defining its legal paradigm. A theoretical definition of ethics and the concept of law will be provided to present a perspective. The recent case
AmaBhungane Centre for Investigative Journalism NPC v President of the Republic of South Africa [2022] ZACC 31 will be viewed as theoretical guidance on the principles used in obtaining the judgment, mainly on the invalidation of the Executive Ethics Code. The case law is examined to establish the significance of ethics in the South African legal system, especially when it comes to professional ethics in government officials or public administrators. This article aims to present a clear overview of professional ethics, particularly the place of ethics in our legal system. The ethical standards that should guide professionals to repel unethical conduct are critically discussed.
Disseminated and Circulating Tumour Cells and Their Role in Breast Cancer
Authors: Čabiňaková Michaela , Tesařová P.
Published: August 2024

Metastatic spread of the primary tumour is responsible for the vast majority of cancer-related deaths. Detection of disseminated tumour cells in the bone marrow and circulating tumour cells in the peripheral blood is correlated with early metastatic relapse in breast cancer. Positive detection of disseminated tumour cells was associated with poor overall survival of patients. Current research has been focused on integrating minimal residual disease as a prognostic and predictive tool in the management of breast cancer. Detection of disseminated tumour cells/circulating tumour cells is not yet standardized in clinical practice because of using different enrichment and detection methods. Therefore, standardization of the used methods is necessary in the future. Previous achieved findings must be verified in larger prospective multicentre studies. Further characterization of disseminated tumour cells/circulating tumour cells will be essential for developing and monitoring the efficacy of new therapeutic concepts. The aim of this review was to provide a short survey of the metastatic cascade and cancer stem cell theory, and data on the molecular and functional characterization of disseminated tumour cells/circulating tumour cells. Finally, we discuss the potential clinical impact of disseminated tumour cells/circulating tumour cells and results of several recent studies.
Activation of the Jak/Stat Signalling Pathway by Leukaemia Inhibitory Factor Stimulates Trans-differentiation of Human Non-Endocrine Pancreatic Cells into Insulin-Producing Cells
Authors: Koblas T. , Leontovyč Ivan , Zacharovová K. , Berková Z. , Kříž J. , Girman P. , Saudek František
Published: August 2024

Differentiation of pancreatic β-cells is regulated by a wide range of signalling pathways. The aim of our current work was to evaluate the effect of the Jak/Stat signalling pathway on the differentiation of human non-endocrine pancreatic cells into insulin-producing cells. Activation of the Jak/Stat signalling pathway by leukaemia inhibitory factor (LIF) stimulated differentiation of C-peptide-negative human non-endocrine pancreatic cells into insulin-producing cells in 6.3 ± 2.0 % cells (N = 5) and induced expression of pro-endocrine transcription factor neurogenin 3, Notch signalling pathway suppressor HES6 and stimulator of β-cell neogenesis REG3A. The expression of the REG3A gene and increased rate of differentiation into insulin-producing cells (10.2 ± 2.1 %) were further stimulated by a combination of LIF with nicotinamide and dexamethasone. Glucose-stimulated (5 vs. 20 mM) C-peptide secretion confirmed proper insulin secretory function of trans-differentiated insulin-producing cells (0.51 vs. 2.03 pmol C-peptide/μg DNA, P < 0.05). Our results indicate that Jak/Stat signalling critically contributes to trans-differentiation of non-endocrine pancreatic cells into functional insulin-producing cells. The positive effect of the Jak/Stat signalling pathway on trans-differentiation is mediated by the key genes that activate differentiation of pancreatic β-cells.
Genetic and Functional Analyses of MRAS and HNF1A Genes in Diabetes and Diabetic Nephropathy
Authors: Horová Eva , Prázný M. , Kaňková K. , Brismar K. , Gu H. F.
Published: August 2024

Evidence has recently indicated that the MRAS and HNF1A genetic polymorphisms are associated with coronary artery disease. The MRAS and HNF1A genes are located on chromosomes 3q and 12q within the regions where associations with diabetes and diabetic nephropathy occur. We thus performed genetic and functional analyses of these two genes to evaluate their impacts on diabetes and diabetic nephropathy. MRAS and HNF1A genetic polymorphisms were genotyped in 1399 Czech subjects including non-diabetic controls (339), type 1 (243) and type 2 (817) diabetic patients with and without diabetic nephropathy using TaqMan allelic discrimination. Gene expression levels in the kidneys of diabetic Goto-Kakizaki and Wistar rats were detected with real-time RT-PCR. Despite no significance in genetic analysis of diabetic subjects, SNP rs2259816 in the HNF1A gene tended to associate with diabetic nephropathy in type 1 diabetic patients. The hnf1a gene expression was significantly decreased in kidney tissues of Goto-Kakizaki rats compared to Wistar and insulin-treated Goto-Kakizaki rats. There was neither significant association in the MRAS genetic polymorphism with diabetic nephropathy nor variation of mras gene expression in the kidneys of Goto-Kakizaki and Wistar rats. Data from the present study have not proved any significant association of the MRAS and HNF1A genetic polymorphisms with diabetes and diabetic nephropathy in a cohort of Czech population. However, the functional analysis and the trend in genetic analysis suggest that the HNF1A gene may have primary genetic impact on the development of diabetic nephropathy.
Heat stress and the velocity–duration relationship in amateur runners
Authors: Leslie Eric , Erram Jyotika , Cannon Daniel T.
Published: August 2024

Tolerance to high‐intensity constant power exercise can be characterized by the hyperbolic power‐duration (or velocity–duration) relationship. The hyperbola is defined by the asymptote (critical power or velocity) and the curvature constant (W′ or D′). The effects of thermoregulatory stress on middle‐distance running performance are equivocal—possibly due to the complexities of the hyperbolic velocity–duration relationship for these relatively short duration events. We aimed to measure the effects of heat stress on the velocity–duration relationship in amateur runners. Fifteen participants (23 ± 6 years) completed a series of constant‐velocity running bouts to intolerance in three heat indices (MILD: 20°C, VERY HOT: 38°C, EXTREME: 55°C). Critical velocity (CV) in MILD (3.52 ± 0.86 m/s) was higher than VERY HOT (3.39 ± 0.82 m/s) and EXTREME (3.29 ± 1.05 m/s; F[2.28] = 3.80, p < 0.035) with no effect of thermal stress on D′ (F[2.28] = 2.48, p = 0.11). In amateur competitive/recreational runners, heat stress of ≥38°C heat index negatively affected CV. Thus, even during relatively short events, such as middle‐distance running where fluid loss is not a primary concern, heat stress may negatively impact performance.
A comprehensive review on residence time distributions in co-rotating twin-screw extrusion
Authors: Vergnes Bruno
Published: August 2024

The concept of residence time distribution (RTD) is crucial in many chemical engineering applications. In the case of co-rotating twin-screw extrusion, it is an important process parameter, particularly when dealing with reactive systems, degradation issues, or scale-up problems. In this review paper, after introducing the basic notions concerning RTD, the various measurement methods are detailed. Then, experimental results on the influence of the main parameters of the extrusion process (screw speed, feed rate, barrel temperature, screw profile, etc.) are presented. Finally, the various theoretical approaches to describe and/or predict RTD are reviewed.
Assessing the stability of uncentrifuged serum and plasma analytes at various post-collection intervals
Authors: Mokhsin Atiqah , Subramaniam Poonaresi , Sivaneson Sivasooriar , Nheu Nelson , Ramaloo Gobhy , Hanifah Azana S. , Mahathevan Sumitha B. , Nadarajah Mohanaraja , Sampasivam Gayathiri , Mohd Ismail Aletza , Abdul Rahman Thuhairah
Published: August 2024

Objectives

Our study aimed to assess the stability of 26 biochemistry analytes in serum or plasma samples separated from blood samples centrifuged at different time intervals after collection, simulating sample transport via despatch delivery systems.

Methods

Blood from 41 volunteers was collected using five serum separator tubes (SST) and five fluoride oxalate tubes (FOT) for each volunteer following written informed consent. Each of the five tubes in both groups of SST and FOT was centrifuged at one of the time intervals: 0.5 h, 4 h, 8 h, 12 and 24 h after collection. These samples were left standing prior to centrifugation at room temperature. We calculated the percentage difference for each analyte between the 0.5 h and other time intervals to assess analyte stability. The percentage difference was compared to the desirable specification for bias and reference change value (RCV).

Results

Mean concentration of serum potassium showed a significant increase in the percentage RCV after 8 h, while CKMB showed an increase after 12 h of delayed centrifugation compared to the baseline (0.5 h). There were no significant percentage RCV for the other analytes at all timelines.

Conclusions

Serum potassium and CKMB were stable up to 8 and 12 h of delayed centrifugation respectively, whilst all other analytes appear stable up to 24 h, suggesting that sample transport delay of up to 8 h, with the condition that room temperature is maintained, may not have a significant impact on accuracy of the biochemistry/immunochemistry test results.
A comprehensive systematic literature review of ML in nanotechnology for sustainable development
Authors: Ur Rehman Inam , Ullah Inam , Khan Habib , Guellil Mohammed Seghir , Koo JaKeoung , Min Jakyoung , Habib Shabana , Islam Muhammad , Lee Mi Young
Published: August 2024

The rapid expansion of nanotechnology has transformed numerous sectors, with nanoproducts now ubiquitous in everyday life, electronics, healthcare, and pharmaceuticals. Despite their widespread adoption, concerns persist regarding potential adverse effects, necessitating vigilant risk management. This systematic literature review advocates for leveraging artificial intelligence (AI) and machine learning (ML) methodologies to enhance simulations and refine safety assessments for nanomaterials (NMs). Through a comprehensive examination of the existing literature, this study seeks to explain the pivotal role of AI in boosting NMs sustainability efforts across six key research themes. It explores their significance in advancing sustainability, hazard identification, and their diverse applications in this field. In addition, it evaluates the past sustainability strategies for NMs while proposing innovative avenues for future exploration. By conducting this comprehensive analysis, the research aims to illuminate the current landscape, identify challenges, and outline potential pathways for integrating AI and ML to promote sustainable practices within nanotechnology. Furthermore, it advocates for extending these technologies to monitor the real-world behaviour of NMs delivery. Through its thorough investigation, this systematic literature review endeavours to address current obstacles and pave the way for the safe and sustainable utilization of nanotechnology, thereby minimizing associated risks.
Influence of gamma irradiation on germination traits, growth and biochemical attributes of dragon fruit (Selenicereus monacanthus)
Authors: Kishore Kundan , Shukla Kuldeep K. , Sahoo Manas R. , Pradhan Kedareswar , Bhol Rajkumari , Swain Subash C.
Published: August 2024

The aim of this research is to assess the effectiveness of gamma irradiation in developing genetic variability in dragon fruit by influencing biochemical attributes. Seeds of dragon fruit were exposed to 100, 200, 300, 400 and 500 Gy γ-radiation using Co-60 source. Highest germinability, mean germination time, mean daily germination, vigour index and growth rate were observed in untreated seeds, however these traits were relatively less affected at lower irradiation level (up to 200 Gy). An irradiation level of ≥ 400 Gy severely affected germination traits and seedling growth and consequently 441 Gy irradiation level was considered as the lethal dose (LD50) for dragon fruit. Photosynthetic pigments, protein content and nutrient content were highest in untreated seedlings and moderately high up to 200 Gy. Findings demonstrated that the concentration of biochemical markers for abiotic stress tolerance viz. proline, phenol, flavonoid and antioxidant enzymes (superoxide dismutase, catalase and ascorbate peroxidase), were significantly high at 200 Gy irradiation level. Hence an irradiation dose of 200 Gy may be considered as an optimal for induced mutagenesis for abiotic stress tolerance in dragon fruit with the least possible unintended damage to seedling growth traits. The findings provide valuable insights into the efficient utilization of γ-irradiation in expediting the development of abiotic stress-tolerant mutant lines of dragon fruit.
Reflexão e ações na formação e atuação do professor de língua portuguesa
Authors: Siqueira Regina Aparecida Ribeiro , Messias Rozana Aparecida Lopes
Published: August 2024

Propomo-nos, neste artigo, a refletir sobre a formação e a prática de professores de língua portuguesa, numa perspectiva denominada reflexiva. Nosso intuito configurase, essencialmente, em pensar sobre como o professor interage com as orientações teóricas, em especial as contidas nos PCNs destinadas ao ensino de língua portuguesa, e, a partir desta relação, de que maneira se constitui autor de sua prática pedagógica em sala de aula. Para tal, observaremos a atuação de um professor de língua portuguesa em uma classe de ensino fundamental (5ª série), considerando a forma como o mesmo, a partir da leitura dos PCNs de língua portuguesa, orienta, em sala de aula, as atividades de produção de textos orais.
O discurso publicitário e as metáforas das propagandas de cursos de línguas incorporados na fala do aluno ingressante no curso de Licenciatura em Letras
Authors: Lima Solange dos Santos
Published: August 2024

O objetivo principal deste trabalho é analisar no discurso do aluno ingressante no curso de Licenciatura em Letras de uma universidade Sul Mato-Grossense os possíveis efeitos de sentidos que a incorporação, reprodução e transformação do discurso publicitário das propagandas de cursos de línguas podem produzir nesses sujeitos, clientes em potencial desses cursos de línguas. Para adentrarmo-nos nesse campo de estudo, partimos das diretrizes teóricas da Análise do Discurso de linha francesa, a qual reflete “como a linguagem está materializada na ideologia e como a ideologia se manifesta na língua” e “trabalha a relação língua-discurso-ideologia” (Orlandi, 2001, p. 16-17).
The State of Creativity during the Covid-19 Pandemic
Authors: Ferguson Margot
Published: August 2024

The 2020 COVID-19 pandemic caused a huge displacement for people globally. This displacement resulted in a shift in notions of personal reality and affective relationships. Creativity is a sensitive process that is impacted by one’s physical, social, and cultural reality. In this paper, I understand creativity to encompass the process, experience, and feelings associated with the creation of new products and ideas, that are both novel and appropriate to a given situation or time-period (Amabile et al. 2005). This ethnography explores the impact of the pandemic on the creative processes of six Toronto-based artists. I explore the effects of decreased collaboration, decreased social interaction, and greater isolation, on the motivation for art creation, the content of art created and the overall affectual states of the artists. I consider how these changes were linked to the different layers of Hennessey and Amabile (2010)’s structural model of creativity and I posit why artists had different creative outcomes. Preference for alone time when creating art versus creating through collaboration impacted people’s motivation for creativity during COVID-19 and the subsequent amount of art created. Preference for alone time was also linked to the affective results of different artists during the COVID-19 pandemic—those who previously collaborated during their artistic process suffered more than those who mostly created in solitude. The mediums different artists engaged with also impacted motivation and their ability to continue creating.
The Hmong Language as a Connection between Past and Present in Rural Thailand
Authors: Jarvis Gabbie
Published: August 2024

My ethnographic research took place in Pa Klang in Thailand during a university field school from late May to early August 2022. The Hmong are an ethnic group who originally lived in Southeast Asia in mountainous regions, supported by an agrarian lifestyle. Until the mid-nineteenth century, the Hmong language had no writing system and was based on oral traditions. The methods I used to gather data included observations of social interactions and participation in events, interviews, and surveys. Though most research about Hmong language maintenance has been done in the United States, diasporic Hmong communities exist in many parts of the world and assimilate into many different cultures while trying to sustain theirs. I focus my research on a Hmong community in Thailand. I argue that the younger Hmong generations have a different experience with language loss and maintenance in Thailand compared to the United States. I argue that Hmong youth in Thailand seek to learn more about their language in churches and university clubs to remain emotionally and linguistically connected to their friends and family, learn their roles in Hmong society, and pass the language on to future generations.
Creative thinking mathematical ability of students in Treffinger learning based on cognitive style
Authors: Nurzulifa Siti , Dwijanto Dwijanto
Published: August 2024

This study aimed to test the thoroughness of learning Treffinger for mathematical creative thinking abilities of students, tes the mathematical creative thinking abilities of students in the learning Treffinger compared conventional, and analyze the mathematical creative thinking abilities of students in Treffinger based cognitive style. This study uses a mixed methods design sequential explanatory. The subjects of this study were six students of class VII J SMP Negeri 1 Godong in the even semester of the academic year 2018/2019. Data collection techniques used include: observation, documentation, test, and interviews. The result showed that (1) learning Treffinger due to the ability of creative thinking mathematically, (2) ability to think creatively mathematical students in learning Treffinger higher than the ability to think creatively mathematical students in learning conventional, (3) the ability to think creatively mathematically students on cognitive style is (a) field independent students less able to work on question smoothly and flexibly; can work on new problem correctly ; can write in detail and correctly what is known in the problem, can develop ideas that are owned by being able to draw geometric flat shapes well; (b) intermediet field students less able to work on question smoothly and flexibly; less able to work on new problem correctly; can develop ideas that are owned by being able draw geometry well; (c) field dependent student less able to work on question smoothly and flexibly; less able to work on new problems correctly; less able to develop ideas that have to work on a problem.
Mathematical representation ability and confident character assisted by Schoology with the NHT method and thematic approach
Authors: Sabrina Atika Nur , Hidayah Isti , Kharis Muhammad
Published: August 2024

This study aims to determine the students’ mathematical representation ability and confidence character assisted by Schoology with the Numbered Heads Together (NHT) method and thematic approach and describe the mathematical representation ability based on the character of self-confidence. The subjects of this study were students of class VIIF and VIIH, one of Junior High School in Semarang. The method used is a mixed method. The results of the study show that: (1) The students’ mathematical representations ability and confident character assisted by Schoology with the NHT method and thematic approaches are better than learning without Schoology; (2) the mathematical representation ability based on the character of self-confidence is (a) students with high self-confidence implement indicators visual and symbolic representations; (b) students with medium self-confidence implement indicator symbolic representation; and (c) students with low self-confidence not implementing of indicators visual, symbolic, and verbal representation abilities.
Mathematical representation ability on geometry material viewed from interest for learning in jigsaw cooperative learning performance assessment
Authors: Elmagustilla Sheila Rosita , Masrukan Masrukan
Published: August 2024

This research aimed to test whether Jigsaw cooperative learning on geometry material with performance assessment achieve mastery learning, test whether the ability of the mathematical representation of students with Jigsaw cooperative learning on geometry material with the assessment of the performance is better than the ability of the representation of the students on the model of Discovery Learning, a description of the ability of the mathematical representation students on Jigsaw cooperative learning with the assessment of performance in terms of student interest. This study is mixed-methods research. The subjects were students of class VIII-A, one of Junior High School in Kaliwungu. The data collection method with tests, questionnaires and interviews. The results showed that: mathematical representation abilities of students who receive Jigsaw cooperative learning on geometry material with performance assessment fulfil the completeness of learning, mathematical representation abilities of students on geometry material in Jigsaw cooperative learning with performance assessments better than mathematical representation abilities of students on Discovery Learning, and descriptions of students' mathematical representation abilities in the Jigsaw cooperative learning with performance assessments in terms of students interest learning that students with high learning interest are able to fulfil indicators of mathematical representation ability is very well, students with learning interest are able to fulfil indicators of mathematical representation ability well and students with low learning interest are less able to fulfil the indicators of mathematical representation ability.
The mathematical communication ability based on student's self-confidence in Problem Based Learning models with brainstorming techniques
Authors: Maysaroh Wiwit , Mulyono Mulyono , Kurniasih Ary Woro
Published: August 2024

The mathematical communication ability is an important aspect that every student must have. The Facts show that mathematical communication ability and student confidence are still not optimal. One effort to overcome that is by applying PBL models with brainstorming techniques. The purpose of this study was to test the effectiveness of the PBL model with brainstorming techniques on students' mathematical communication ability, describing mathematical communication ability on PBL models with brainstorming techniques in terms of student confidence. This research uses mix method approach with a concurrent embededded model. The population of this study was class VIII of SMP Negeri 1 Ungaran in the 2018/2019 school year. The results showed that: PBL models with effective brainstorming techniques for learning as indicated by learning outcomes in aspects of mathematical communication ability achieve mastery learning individually and classically as well as the average learning outcomes in classes using PBL models with brainstorming techniques more than average learning outcomes in the classroom using the PBL model, subjects with high self-esteem can meet all indicators of mathematical communication ability, on subjects with moderate self-confidence only able to meet indicators explaining ideas, situation and mathematical relationship at writing and indicators listening, discussing and writing about mathematics. Whereas for subjects with low levels of self confidence have not been able to meet all indicators of students' mathematical communication ability.
Metacognition ability of grade X students in mathematical problem solving through a digital project-based learning with Edmodo
Authors: Misa’adah Fedriana , Mariani Scolastika
Published: August 2024

This study aims to determine how the description of problem-solving abilities supported by metacognition skills in digital learning Project Based Learning assisted by Edmodo. This study used a qualitative method. The population taken in this study were students of class X SMA N 1 Jekulo Kudus. This study used a true experimental design with a pretest-posttest control group design. The sampling technique used in this study was a randomized class technique. Data collection was carried out by means of written tests and interviews. Indicators of problem-solving abilities in this study include (1) identifying problems, (2) planning problems, (3) implementing problem solving in accordance with the plan, and (4) interpreting the results obtained. The results of this study indicate (1) the problem solving abilities of students who have high metacognition abilities meet the four problem solving indicators, (2) the problem solving abilities of students who have moderate metacognitive abilities meet the three problem solving indicators, (3) the problem solving abilities of students who have low metacognition ability only fulfills two problem solving indicators.
Development of STEAM-based Teaching Materials on Trigonometric Equations to Improve Students’ Mathematical Creative Thinking Ability
Authors: Rahardjoni Amri Setiawan , Mashuri Mashuri
Published: August 2024

This research was a development research that aims to develop and to know the quality of Science, Technology, Engineering, Art, and Mathematics (STEAM)-based teaching materials viewed by the suitability of characteristics, validity, readability, and improvement of students’ mathematical creativity thinking ability. This research used the stages of Research and Development (R&D) those are: (1) potential and problems; (2) data collection; (3) product design; (4) product test (readability test); (5) trial test; (6) final product. The result showed that the teaching material met the suitability of the characteristic. The result of the validity test showed a percentage of 89.3%. The readability test result showed a percentage of 74.8%. The analysis of the pretest and posttest showed that teaching materials could improve students’ mathematical creativity thinking ability with the N-Gain score of 0.34 in the medium category. Therefore, the Science, Technology, Engineering, Art, and Mathematics (STEAM)-based teaching materials is qualified.
Mathematical Creative Thinking Ability in REACT Learning Assisted by Dynamic Assessment in Terms of Student Learning Independence
Authors: Prastami Hedyana Bunga , Kartono Kartono
Published: August 2024

Creative and critical thinking abilities and self-directed learning are critical components of mathematical education. This study aimed to ascertain students' capacity to think creatively and mathematically while learning the REACT paradigm through dynamic assessments. This study used a mixed-method approach in conjunction with a sequential explanatory design. The research population consists of students in the seventh grade at SMP Negeri 8 Semarang. The instruments employed are assessments of mathematical creativity, surveys on learning independence, and interview procedures. The findings indicated that (1) students' mathematical creative thinking abilities improved significantly when REACT learning was supported by dynamic assessments; (2) the average mathematical creative thinking ability of students in REACT learning enabled by dynamic assessments is superior to that of students in REACT learning; (3) there is a positive correlation between learning independence and mathematical creative thinking ability; and (4) the description of mathematical creative thinking ability is accurate. Students who demonstrate high learning independence perform admirably on all mathematical creative thinking abilities indicators. Students who have a moderate level of learning independence perform pretty well on the indicators of mathematical creativity. Students with a low level of learning independence demonstrate only one of the three indicators of mathematical creativity.
Analysis of Mathematical Problem Solving Ability Viewed by Students Learning Motivation in PBL Learning Model Hijri Calendar Textbooks-Assisted
Authors: Rahmawati Lusi , Munahefi Detalia Noriza
Published: August 2024

This study aims to examine classical mastery, average differences, and differences in proportions between PBL learning assisted by hijri calendar textbooks and PBL learning and describe mathematical problem-solving abilities in terms of students' learning motivation. This research is mixed method. The quantitative research samples were students of class X-8 (experimental group) and X-6 (control group) while in the qualitative research, the research subjects were taken from six students selected from the experimental group. Data collection was carried out by tests, questionnaires, interviews, and documentation. The results showed that (1) the ability to solve mathematical problems in the hijri calendar textbook-assisted PBL model achieved classical mastery, (2) the average mathematical problem-solving ability in the hijri calendar textbook-assisted PBL model was better than PBL learning, (3) the proportion of completeness of mathematical problem solving abilities in the PBL learning model assisted by hijri calendar textbooks is better than PBL learning, (4) a description of mathematical problem solving abilities in terms of students' learning motivation, namely: (a) students with high learning motivation have problem solving abilities very good, (b) students with medium learning motivation have fairly good problem-solving abilities, and (c) students with low learning motivation have poor problem-solving abilities.
STUDI KOMPARATIF MODEL PEMBELAJARAN TAI DAN CIRC TERHADAP KEMAMPUAN KOMUNIKASI MATEMATIS SISWA
Authors: Hartati Tri Lusi , Suyitno Hardi
Published: August 2024

Tujuan dalam penelitian ini adalah (1) untuk mengetahui apakah kemampuan komunikasi matematis siswa dengan model TAI mencapai ketuntasan belajar; (2) untuk mengetahui apakah kemampuan komunikasi matematis siswa dengan model CIRC mencapai ketuntasan belajar; (3) dan untuk mengetahui apakah kemampuan komunikasi matematis siswa dengan model TAI lebih baik daripada kemampuan komunikasi matematis siswa dengan model CIRC. Populasi dalam penelitian ini adalah siswa kelas VIII SMP Negeri 8 Semarang tahun ajaran 2013/2014. Dengan teknik purposive sampling terpilih dua kelas sampel yaitu siswa kelas VIII B sebagai kelas eksperimen I dan siswa kelas VIII C sebagai kelas eksperimen II. Metode pengumpulan data menggunakan metode dokumentasi, tes dan observasi. Teknik analisis data menggunakan uji t Â dan uji kesamaan rata-rata. Hasil penelitian menunjukkan bahwa kemampuan komunikasi matematis siswa kelas eksperimen I dan kelas eksperimen II mencapai ketuntasan belajar. Disimpulkan bahwa kemampuan komunikasi matematis dengan model TAI dan CIRC mencapai ketuntasan belajar dan kemampuan komunikasi matematis siswa dengan model TAI lebih baik daripada dengan model CIRC.
IMPLEMENTASI MODEL PBL DENGAN PENDEKATAN REALISTIK BERBANTUAN EDMODO UNTUK MENINGKATKAN LITERASI MATEMATIKA SISWA KELAS VII
Authors: Dewi Solekah Candra
Published: August 2024

Tujuan penelitian ini adalah untuk mengetahui terdapat perbedaan rata-rata literasi matematika siswa kelas VII SMP N 19 Semarang yang diberi model pembelajaran PBL dengan pendekatan realistik berbantuan edmodo, PBL dengan pendekatan realistik, dan ekspositori; untuk mengetahui bahwa literasi matematika yang mendapat model pembelajaran PBL pendekatan realistik berbantuan edmodo meningkat; untuk mengetahui bahwa kualitas model pembelajaran PBL dengan pendekatan realistik berbatuan edmodo memiliki kategori baik; untuk mendeskripsikan kesulitan siswa dalam mengerjakan soal berorientasi PISA. Dengan menggunakan teknik cluster random sampling terpilih tiga kelas sampel yaitu kelas eksperimen 1 yang menggunakan model pembelajaran PBL dengan pendekatan realistik berbantuan edmodo, eksperimen 2 yang menggunakan model pembelajaran PBL dengan pendekatan realistik, dan kelas kontrol yang menggunakan model pembelajaran ekspositori. Hasil penelitian diperoleh bahwa rata-rata literasi matematika siswa pada kelompok model PBL dengan pendekatan realistik berbantuan edmodo lebih baik daripada rata-rata literasi matematika siswa pada kelompok model PBL dengan pendekatan realistik dan kelompok ekspositori; kualitas pembelajaran menggunakan model PBL dengan pendekatan realistik berbantuan edmodo yang dilaksanakan memiliki kategori sangat baik; kesulitan-kesulitan yang dialami oleh siswa dalam menyelesaikan soal bertipe PISA yang berkaitan dengan konsep dan prinsip.
IMPLEMENTASI PEMBELAJARAN AUDITORY INTELLECTUALY REPETITION (AIR) TERHADAP KEMAMPUAN BERFIKIR KRITIS DAN DISPOSISI MATEMATIS PESERTA DIDIK PADA MATERI KUBUS DAN BALOK
Authors: Sumarni Sumarni , Sugiarto Sugiarto , Sunarmi Sunarmi
Published: August 2024

Penelitian ini bertujuan untuk mengetahui ketuntasan hasil belajar peserta didik, rata-rata hasil belajar, serta perbedaan disposisi matematis peserta didik setelah diberi perlakuan model pembelajaran AIR pada materi kubus dan balok. Penelitian dilakukan di SMP Negeri 3 Ungaran tahun pelajaran 2014/1015 dengan dua kelompok sampel yaitu kelompok eksperimen dan kelompok kontrol. Berdasarkan hasil analisis regresi, terdapat hubungan yang positif antara disposisi matematis dan aktivitas belajar dengan kemampuan berfikir kritis peserta didik. Simpulan dari penelitian ini adalah hasil belajar peserta didik dengan model pembelajaran AIR pada materi kubus dan balok dapat mencapai ketuntasan klasikal, dan rata-rata kemampuan berfikir kritis peserta didik pada pembelajaran AIR lebih baik dari rata-rata kemampuan berfikir kritis pada pembelajaran ekspositori. Selain itu disposisi matematis peserta didik dengan pembelajaran AIR lebih baik dari disposisi matematis peserta didik dengan pembelajaran ekspositori.
KEEFEKTIFAN PEMBELAJARAN MODEL POGIL BERBANTUAN KARTU MASALAH TERHADAP KEMAMPUAN PEMECAHAN MASALAH DAN KARAKTER BANGSA SISWA KELAS VIII
Authors: WIDYANINGRUM PRIMA SEKAR , Pujiastuti Emi , Wijayanti Kristina
Published: August 2024

Tujuan penelitian ini adalah mengetahui apakah kemampuan pemecahan masalah siswa dengan penerapan pembelajaran model POGIL berbantuan kartu masalah dapat mencapai ketuntasan klasikal lebih dari atau sama dengan 75% dari jumlah siswa di kelas yang tuntas secara individual dan kemampuan pemecahan masalah siswa dengan penerapan pembelajaran model POGIL berbantuan kartu masalah lebih baik daripada kemampuan pemecahan masalah siswa dengan penerapan pembelajaran model ekspositori berbantuan kartu masalah, serta bagaimana karakter bangsa siswa dengan penerapan pembelajaran model berbantuan kartu masalah. Populasi penelitian ini adalah siswa kelas VIII SMP Negeri 2 Banyumas. Teknik sampling menggunakan cluster random sampling, diperoleh kelas VIII D sebagai kelas eksperimen dan kelas VIII E sebagai kelas kontrol. Metode pengumpulan data meliputi metode tes, observasi, dan dokumentasi. Analisis data yang digunakan adalah uji proporsi dan uji ketidaksamaan dua rata-rata. Hasil penelitian menunjukkan bahwa kemampuan pemecahan masalah siswa kelas eksperimen mencapai ketuntasan klasikal dan kemampuan pemecahan masalah siswa kelas eksperimen lebih baik daripada kemampuan pemecahan masalah siswa kelas kontrol. Selain itu, karakter bangsa siswa dengan penerapan pembelajaran model POGIL berbantuan kartu masalah mengalami perubahan menjadi lebih baik dari kriteria yang dimiliki sebelumnya.
 
The purpose of this study was to determine whether the problemÂ­solving ability of students with the application of learning models POGIL assisted problem cards could achieve classical completeness is more than or equal to 75% of the number of students in the class who completed individually and problemÂ­solving ability of students with the application of learning models POGIL assisted problem cards was better than problemÂ­solving ability of students with the application of learning models expository assisted problem cards, and how the national character of students with the application of learning models POGIL assisted problem cards. The population in this study is the eighthÂ­grade students of Banyumas 2 Junior High School. Sampling was carried out by cluster random sampling technique, is obtained as an experimental class in eighth grade D and eighth grade class E as a control. Data collection methods include tests, observation, and documentation. Analysis of the data used is the proportion test, and test two average inequality.The results showed that the test result graders problem solving capabilities experiments achieve classical completeness and the average test students' problemÂ­solving abilities experimental class better than the average results of the test solving abilities issue control class. Besides that, national character of students with the application of learning models POGIL assisted problem cards change be better of the criteria previously owned.