bluuebunny/crossref_metadata_2025 huggingface dataset:
Estimating the firing temperature of a brick sample from a church convento archway ruin in Quipayo, Camarines Sur, Philippines
Authors: Cayme Jan-Michael C. , Miranda Eric T.
Published: August 2024

The firing of bricks is one of the most critical manufacturing steps that affect its durability. It also directly reflects the past artisan’s skills and technological knowledge. This study estimates the firing temperature range of a brick material from a Spanish Colonial Period church convento archway ruin in Quipayo, Camarines Sur, Philippines. A combination of different analytical techniques, namely energy dispersive X-ray fluorescence (EDXRF), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy with energy dispersive X-ray (SEM-EDX), and thermogravimetric analyzer (TGA), were utilized to determine the mineralogical and chemical composition. From the resulting composition data, the firing temperature of the brick material was estimated to be within the range of 900 to about 1,100 °C and burned in an oxidizing atmosphere. The information derived from this study provides a baseline chemical data of historical bricks that can help assess future conservation works.
A review of single-handed coaxial phacoemulsification technique for cataract surgery
Authors: Setyandriana Yunani , Zain Nurul Attikah
Published: August 2024

Background: Currently, cataract surgery is categorized into two main techniques: phacoemulsification and femtosecond-laser-assisted-cataract-surgery (FLACS)..Objective: The objective of this study was to present a comprehensive review of the existing literature on the single-handed coaxial phacoemulsification technique used in cataract surgery.Methods: The study conducted a systematic review of PubMed, EMBASE, and Scopus databases. The participants included in our study were individuals diagnosed with simple cataract. These individuals had treatment using either single-handed or two-handed phacoemulsification or FLACS techniques. Publications predating the year 2000 were omitted from consideration. The abstracts of the publications were analyzed utilizing the PRISMA diagram, and those deemed to be somewhat and highly pertinent were incorporated. In total, a comprehensive analysis was conducted on six research, consisting of two randomized controlled trials (RCTs) and four non-randomized controlled trials (nonRCTs).Results: The visual acuity (VA) shown a statistically significant improvement in the single-handed group compared to the two-handed group at the one-week postoperative assessment (p<0.05). However, this difference was not observed at the one-month and three-month postoperative assessments.  The single-handed group had a smaller angle of error (AE) compared to the two-handed group (p=0.005). Additionally, another study observed an improvement in visual acuity (VA) in individuals who underwent single-handed, two-handed group, and femtosecond laser-assisted cataract surgery (FLACS). However, the study did not identify any statistically significant variations in VA improvement across the three groups. There was no statistically significant difference observed among the three groups in relation to ECL and CCT. The intraoperative phacoparameter exhibited a statistically significant decrease in the single-handed group (P<0.01) compared to the two-handed group, while it did not differ substantially from the femtosecond laser-assisted cataract surgery (FLACS) group.Conclusion: When comparing the two-handed phacoemulsification technique to FLACS, it was observed that a single-handed method exhibited a reduced angle of error, minimized corneal damage, and exhibited early visual outcomes.
Incongruence in the Definition of Land Rights in National Agrarian Law: A Path to Legal Uncertainty
Authors: Mahfud Muh. Afif , Chin Chin Sia
Published: August 2024

Legal certainty as one of the goals of national land law will not be created when there is incongruence in the definition of land rights in regulations. This incongruity may affect the formation, implementation and interpretation of law in the agrarian sector. The aim of this article is to analyze the incongruence in the definition of land rights in regulations and the impact of this incongruence in the definition. Based on the analysis, it is concluded that there is an inconsistency in the definition of land rights in Government Regulation no. 18 of 2021 which states that the authority for land rights covering above the ground and underground space is not in line with PP (Government Regulation) No. 43 of 2021. The regulation states that the authority for land rights does not cover the space above the ground and underground space. This misalignment includes horizontal incongruity, formal incongruity and substantive incongruity. It will result in unclear meaning of land rights, loss of predictability of regulations, and affecting the formation, enforcement and interpretation of laws so that there is no clear reference for the community and law enforcers in acting. Ultimately, this will affect legal protection for the community in exercising their rights. It is recommended that the government harmonize the definition of regulatory land rights.
Cocaine-induced Movement Disorder: A Literature Review
Authors: Byroju Vishnu Vardhan , Rissardo Jamir Pitton , Durante Ícaro , Caprara Ana Letícia Fornari
Published: August 2024

This study aims to describe movement disorders secondary to cocaine use. To our knowledge, while these presentations have been previously reported in the literature, a comprehensive review has not been published yet. We searched six databases from 1986 to 2022 without language restriction. Case reports, case series, and literature reviews have been analysed to find associations between cocaine use and movement disorders. The present study encompasses epidemiology, clinical manifestations, pathophysiology, and diagnostic challenges of abnormal movements associated with cocaine use. This review highlights the importance of proper initial evaluation and investigation taking into account the broad spectrum of differential diagnoses and exclusion of primary movement disorders. The role of the dopaminergic system in movement disorders is reviewed. Cocaine use is associated with movement disorders such as dystonia, parkinsonism, akathisia, and tics. The complex interaction of multiple factors, including other neurological conditions, such as Tourette syndrome, and additional substances of abuse is discussed. The presentation of these manifestations is often heterogeneous and does not follow a specific pattern. In this way, future research is needed to improve our understanding of the pathophysiological mechanisms and develop novel drug targets for these disorders. Increased awareness among the general public and policymakers could translate into reduced stigma and improved care.
Numerical experiments investigating the influence of drag on trajectory patterns of floating macroalgae
Authors: Coppin Ross , Rautenbach Christo , Smit Albertus J.
Published: August 2024

Ocean currents are a crucial means of dispersing natural and human-made materials on the ocean surface. Macroalgae are among the most conspicuous natural dispersers, often called the ‘tumbleweeds of the ocean.’ Despite numerous studies on the subject, the relative influence of wind and surface currents on the trajectory of macroalgal dispersal remains uncertain. Previous studies have focused on kelp rafts of varying sizes, making it challenging to determine the impact of wind versus currents. These studies have also disregarded the macroalgae’s drag characteristics and surface area, which have been shown to impact the trajectory and accumulation of floating flotsam. This numerical study aims to shed light on the relative influence of wind and currents and the role of drag in determining the course and accumulation of macroalgae. By comparing simulations of virtual kelp ‘particles’ that incorporate drag and those without, this study focused on solitary kelp plants and considered the impact of morphological characteristics, flow-field combinations, and the presence of Stokes drift. Our results show that virtual kelp particles generally followed ocean currents, but the inclusion of drag caused deviations from purely Lagrangian particles’ trajectories and sheds light on the complex interplay of factors affecting macroalgal dispersal in the ocean.
Long-term efficacy and safety of PEGylated recombinant human growth hormone in treating Chinese children with growth hormone deficiency: a 5-year retrospective study
Authors: Hou Lele , Lin Shaofen , Liu Zulin , Zhang Lina , Ou Hui , Huang Siqi , Dai Huilian , Meng Zhe , Liang Liyang
Published: August 2024

Objectives

The study endeavored to evaluate the prolonged efficacy and safety of PEGylated rhGH (PEG-rhGH) administration in Chinese children diagnosed with growth hormone deficiency (GHD) over a 5-year period.

Methods

A retrospective analysis was conducted on children with GHD, who received a 0.2 mg/kg/week dose of PEG-rhGH between 2016 and 2023 in our department.

Results

The height standard deviation score (Ht SDS) exhibited a marked elevation post-PEG-rhGH administration (p<0.001), sustaining this enhancement beyond year 3, with increments recorded at 0.94±0.37, 1.49±0.48, 1.77±0.51, 2.12±0.65, and 2.15±0.58 across 5 years. Similarly, the height velocity (HV), insulin-like growth factor-1 standard deviation score (IGF-1 SDS), and bone age to chronological age ratio (BA/CA ratio) underwent significant augmentations (p<0.01). Remarkably, no signs of rapid bone maturation were detected during the 5-year observation. Among the participants, 31 patients (59.62 %) experienced adverse events, of which eight instances (15.38 %) were classified as treatment-related adverse events, but none were severe or unexpected. Additionally, high-density lipoprotein (HDL) levels rose while low-density lipoprotein (LDL) levels fell, both remaining within the standard range throughout the treatment phase.

Conclusions

Administering PEG-rhGH at a dosage of 0.2 mg/kg/week proved both effective and well-tolerated in treating prepubertal children with GHD. This regimen also demonstrated positive impacts on lipid metabolism over an extended treatment period.
Old Woman Meteorite: microstructures, analyses, and stories
Authors: Hogue F.
Published: August 2024

The Old Woman Meteorite (OWM), the second largest found in the USA, was located by prospectors in a steep canyon in the Mojave Desert about 20 km south of Highway 66 in March of 1976. Because of its weight of nearly 3 metric tons it had to be airlifted out of the mountains by a US Marine helicopter.

A small triangular metallographic sample, on loan from the University of California Los Angeles, UCLA, was examined by light microscopy and energy dispersive X-ray spectroscopy (EDS) analysis to identify the structures and phases present.

Rhabdites and schreibersite are visible in the as-polished condition. Nital etchant reveals grain boundaries and Neumann bands. Etching with Klemm I colors kamacite grains(ferrite) and Neumann bands in shades of blue and brown according to the crystal orientation. Prism shaped rhabdites stay white. Many rhabdites show cracks at the intersection with Neumann bands.

Three areas with unusual structures were found. EDS dot maps identified one as schreibersite, another area contains troilite, schreibersite, brezinaite and possibly taenite, the third location contains Fe, Ni, P and S.
Development of MXene-based flexible piezoresistive sensors
Authors: Xu Tong , Peng Heyan
Published: August 2024

The flexibility and sensitivity of traditional sensors is hard to achieve unless wearable technology develops. Flexible piezoresistive sensor (FPS) is one of the solutions in the nondestructive health monitoring of living body. In the application of sensing devices for physiological or biochemical signals, fast feedback speed and accurate signal feedback are essential requirements for obtaining sensitive response signals. Additionally, the development of FPS has promoted the research of conductive materials that could be used in wearable devices. However, improving the performance of functional materials is an important way of effort for researchers. Recently, MXene as a new kind of 2D materials and their composites have made a tremendous impact in the field of sensors for wearable health sensors. Numerous conductive materials based 2D MXene could expedite their practical application in FPS by overcoming the present limitations of FPS such as poor responsivity, signal accuracy, and the narrower corresponding range. There has been plenty of breakthrough in the MXene-based FPS in the past several years. The main purpose of this paper is reviewing the recent development of MXene-based FPS and providing an outlook on the future development of it.
Pluralidade cultural nos parâmetros curriculares nacionais
Authors: Vargens Dayala Paiva de Medeiros , Freitas Luciana Maria Almeida de
Published: August 2024

O objetivo deste artigo é refletir sobre os sentidos atribuídos à “pluralidade cultural” no volume dedicado a esse tema transversal nos Parâmetros Curriculares Nacionais (BRASIL/SEF,1998a).Como marco teórico, lançamos mão da concepção dialógica da linguagem (Bakhtin, 2003; 2004) e de perspectivas enunciativas (Authier- Revuz, 1982; 1998; Maingueneau, 1997; 2002). Para analisar os discursos e os sentidos que constroem o tema da pluralidade cultural nos PCNs, utilizaremos o conceito de heterogeneidade discursiva operacionalizado por Authier-Revuz (1982; 1998; 2004). Dentre os diferentes tipos de manifestações da heterogeneidade mostrada, voltamo-nos para o uso da modalização autonímica, mais especificamente o uso das aspas, marca que reflete a diversidade de vozes que constituem os enunciados e se mostra como importante categoria de análise para os estudos enunciativos. O estudo levou à conclusão de que no documento analisado não há qualquer tipo de menção à ambigüidade cultural e às relações historicamente construídas entre grupos e indivíduos.
Discurso e prática na formação docente
Authors: Oliveira Ana Larissa Adorno Marciotto
Published: August 2024

O foco principal deste trabalho foi analisar o discurso e a práxis de três professoras de inglês de escolas públicas, da grande Belo Horizonte (MG), participantes de uma pesquisa-ação colaborativa, ocorrida nos anos de 2004 e 2006. No início da pesquisa, as professoras também faziam parte de um Projeto de Formação Continuada de Professores (Projeto EDUCONLE- FALE-UFMG). Por meio de sessões colaborativas, realizadas entre pesquisadora e professoras, e da observação participante de aulas, o estudo objetivou identificar as concepções das professoras sobre ensinar uma língua, bem como seu processo de reconstrução ocorrido ao longo do estudo. Os resultados assinalaram que a rede de colaboração entre pesquisadores e escola básica conduziu a mudanças discursivas, incidentes na ação docente e observáveis mesmo após as professoras terem perdido o contato direto com a rede de colaboração. Ademais, ressalta-se que as ações colaborativas conduziram à intensificação do desenvolvimento da autonomia crítica das professoras pesquisadas, num processo discursivamente demarcado, aqui representado pela imagem do deus grego Hermes.
Von Willebrand Factor Levels – A Predictor of Severity of Cirrhosis
Authors: Somani Vaibhav , Amarapurkar Late Deepak
Published: August 2024

Background and Aims: Von Willebrand factor (vWF) a surrogate marker of endothelial dysfunction is increased in patients with cirrhosis but the clinical significance is unclear. Von willebrand factor Antigen (vWF-Ag) plays an important role in primary haemostasis and development of thrombotic vascular obliteration which is a possible mechanism leading to portal hypertension. In this study we evaluated the association of serum vWF-Ag antigen (Ag) level with the severity of cirrhosis (according to Child-Pugh classification), its correlation with patients having thrombosis and size of oesophageal varices in cirrhotics. Methods: We included 107 cirrhotic patients (Male 69%, Mean Age 52+11) in the study. Diagnosis of cirrhosis was made on the basis of biopsy, clinical, laboratory and imaging parameters. vWF-Ag level was done using Von Willebrand Factor antigen 96-microwell test kit from Helena biosciences Europe. The stage of cirrhosis was defined with Child-Pugh classification and MELD score. Data were analysed by using Statistical Package for the Social Sciences (SPSS) 10.0 software program. Results: We observed there was no statistically significant difference in the VWF Ag levels with the increas¬ing stages of cirrhosis according to Child-Pugh score and size of oesophageal varices. vWF-Ag levels were significantly higher in patients with venous thrombosis than without thrombosis (p value- 0.03). Conclusion: Our study does not show any correlation of increase in Serum vWF-Ag levels in with increase severity of cirrhosis and development of oesophageal varices as shown in previous studies.
Synthesizing Cultural Competency and Reproductive Justice: A Case Study of Afghan, Refugee Mothers
Authors: Ray Roxanna
Published: August 2024

Cultural competency and reproductive justice are two popular frameworks by which medical anthropologists, public health experts, and social justice advocates understand minority women’s health; however, both frameworks present shortcomings which limit holistic visualizations of wellness. I synthesize these frameworks in a case study of Afghan refugee mothers in North Carolina. My exploration of the composite framework uncovers significant factors affecting Afghan refugee mother’s reproductive health, including the persisting effects of gender inequality in Afghanistan. History and health merge as I explore the lasting effects of the Taliban’s gender apartheid on the reproductive health of Afghan women living in America. In Afghanistan, gender apartheid inhibits women from mastering the same abilities as men, namely driving and speaking English. In America, these different abilities precipitate deficits in social and mental health of Afghan women as compared to their husbands. Infrastructure in America reifies these deficits and further hinders the women’s agency. Mapping powerlessness from Afghanistan to America, this framework illuminates the architecture of power that extends across the two countries.
Description of Van Hiele's geometry thinking ability in solving open ended problems in the 7E-Learning Cycle in terms of self efficacy
Authors: Asna Alivia Nur , Soedjoko Edy , Mariani Scolastika
Published: August 2024

Provision of geometry material carried out at several levels of education confirms that the burden of children's knowledge in receiving different geometry material is adjusted to the ability of children at each stage. This agrees with the theory of geometry thinking conveyed by Van Hiele. One of the constructivism learning models that is expected to be able to improve problem solving skills in students, including the 7E Learning Cycle model. The purpose of this study is (1) to describe the development of Van Hiele Geometry thinking skills in students in solving open ended problems in 7E Learning Cycle learning, and (2) describe the Van Hiele Geometry thinking skills of students in solving Open Ended problems in terms of Self Efficacy in learning 7E Learning Cycle. The population in this study were students of class IX Junior High Schoolof 2 Kudus. Sampling was done by using purposive sampling technique, 6 subjects were selected, with 2 subjects for low self efficacy, 2 subjects for medium self efficacy and 2 high self efficacy subjects from class IX A as the experimental class.
The mathematical creative thinking ability of students viewed from learning motivation by using Treffinger learning model
Authors: Amanoe Zihni , Isnarto Isnarto
Published: August 2024

The purpose of this study were to (1) know the achievement of the guidance to learn the skills of mathematical creative thinking students in Treffinger learning, (2) know the increase of students ' mathematical creative thinking skills in Treffinger learning, and (3) describe students' mathematical creative thinking skills for each category of learning motivation in Treffinger learning. This research method is a mixed methods design with sequential explanatory. The population in the study were all students of class VII Junior High School 3 Semarang Year 2019/2020, and sampling was conducted by random sampling selected to be sampled is a class VII-H. The subject of research conducted by purposive sampling technique. Subjects consisted of 6 students. Subjects were interviewed by the results of tests of creative mathematical thinking skills and student motivation. The results showed that (1) students' mathematical creative thinking abilities in Treffinger learning achieve mastery learning. (2) There is an increase in students' mathematical creative thinking skills in Treffinger learning. Increased mathematical creative thinking skills are medium. (3) Subject to high learning motivation can meet the indicators flexibility, fluency, and novelty. Subject to being able to meet the learning motivation fluency and novelty or just fluency. Subjects with low learning motivation are only able to meet one indicator fluency.
The Development of Science, Technology, Engineering, Arts and Mathematics Nuanced Mathematics Teaching Materials to Improve Mathematical Conceptual Understanding Ability
Authors: Putri Ade Andani , Asikin Muhammad
Published: August 2024

This research is a development research that aims to develop mathematics teaching materials related to Science, Technology, Engineering, Arts, and Mathematics (STEAM). This study uses the stages of Research and Development (R&D) covering potential and problems; data collection; product design; design validation (potential test and feasibility test); product test (readability test and attractiveness test); use trials (effectiveness test) and the final product. The results of the study indicate that teaching materials have the potential to improve the ability of mathematical conceptual understanding; valid, easy to understand, attractive in appearance, and effectively improve the ability of mathematical conceptual understanding. The test results show that teaching materials have the potential to increase the ability of mathematical conceptual understanding with a percentage of 86.5%. The results of the feasibility test show that the teaching materials are valid for use with a percentage of 86.07%. The results of the readability test showed that the teaching materials were easily understood by students with a percentage of 92.26%. The results of the response test showed that the teaching materials were attractive in appearance with a percentage of 90.15%. Then, the results of the effectiveness test showed that the teaching materials were effective in increasing the ability of mathematical conceptual understanding.
Mathematical Problem Solving Skills Reviewed from Students’ Metacognition Performance in Online-Based PME Learning Model
Authors: Azzahra Tsania Rahma , Mariani Scolastika
Published: August 2024

This research was carried out with the aim of knowing: (1) whether students' mathematical problem solving abilities in the online-based PME learning model achieved classical learning completeness; (2) is the average mathematical problem solving ability in the online-based PME learning model better than the online-based expository learning model; (3) is there any effect of metacognition performance on students' mathematical problem solving abilities in online-based PME learning models; (4) how is the description of mathematical problem solving abilities in terms of the metacognitive performance of Vocational High Schools Perdana Semarang students on the online-based PME learning model. This research uses the mix method. This research is a Quasi Experimental Design with Pre-Test-Post-Test Control Group Design. The population of this research is all students of class XI Vocational High Schools Perdana Semarang. The results of this study indicate that: (1) students' mathematical problem solving abilities in the online based PME learning model can achieve classical learning completeness; (2) the average mathematical problem solving ability of students in the online-based PME learning model is better than the online-based expository learning model; (3) there is a positive influence on the level of metacognition performance on students' mathematical problem solving abilities in the online PME learning model; (4) students with high metacognition performance have better mathematical problem solving abilities than students with moderate and low metacognition performance levels, then students with moderate metacognition performance have better mathematical problem solving abilities than students with low metacognition performance levels.
The Development of Textbook Supplement on Cooperative Integrated Reading Composition Model to Improve Students’ Mathematical Communication Ability
Authors: Widolaksono Dyaisa Algustavia , Rochmad Rochmad
Published: August 2024

The textbook supplement of Cooperative Integrated Reading Composition (CIRC) model is an innovative textbook for three variable linear equation systems and contains indicators of mathematical communication abilities as well as the steps of the CIRC learning model. The purpose of this research was to produce textbooks of the CIRC learning model on three-variable linear equation system in class X which has the potential to improve students' mathematical communication abilities. This research used Research and Development (R&D) with 4D Models which are adapted into 4P Models. However, this research had three steps, they were 1) Define; 2) Design; and 3) Develop. Based on the result of the study, it was found that the textbook supplement on CIRC learning models can be use in learning with an average percentage of 91.23%, it means that the textbook supplement was very feasible. In addition, the readability test of textbook supplement use Cochran Test and the result shows that the students had the same  understanding of the textbook supplement. The textbook supplement getting e-copyright from Directorate General of the Intellectual Property and ISBN from National Library of the Republic of Indonesia was ready used for the next steps, that was testing in classroom learning.
Analysis of Student Errors in Solving Mathematical Literacy Problems Based on the Components of the Mathematical Literacy Process
Authors: Rusmining Rusmining , Sawitri Riza
Published: August 2024

The low PISA Mathematics score of Indonesia was a strong background in this study. The results of the 2018 Mathematics PISA Indonesia scored 371, lower than the 2015 score of 386. This study is a qualitative study that aims to describe student errors in solving mathematical literacy problems on linear program material. The methods used documentation in the form of answer sheets, observations, and interviews. The validity of the data was obtained by using triangulation techniques from the three methods used. The research sample was taken by 25 students of class X SMA Negeri 4 Purworejo. The results of the research include: (1) as many as 20 students, or 80% of students, have not been able to formulate problems mathematically. Students have not been able to make an example of the problem correctly. (2) as many as 23 students, or 92% of students, have not been able to use mathematical concepts and, have not been able to write mathematical symbols (facts) correctly, have not been able to solve problems with correct mathematical principles and procedures. (3) as many as 22 students, or 88% of students, have not been able to make conclusions and evaluate the problems given. From these results, it can be said that 80% or more of students have not been able to solve math problems from the lowest stages of the literacy process.
Analysis of Students’ Mathematical Problem Solving Ability Based on Self-Efficacy and Gender
Authors: Jusra Hella , Ramadhani Nanda
Published: August 2024

This study aimed to describe students' mathematical problem solving ability based on self-efficacy and gender. The method used is descriptive qualitative through the provision of self-efficacy questionnaires, tests, interviews, and documentation. Six subjects were selected based on three levels of self-efficacy and gender from a total of 103 students in one class XI MIPA from three different schools. Research subjects were determined using a purposive sampling technique based on the Rasch model analysis. The test results of the subjects were analyzed using four Polya stages consisting of understanding the problem, making a plan, carrying out the plan, and looking back. The results of this study indicate that (1) subjects with high levels of self-efficacy can fulfill all indicators systematically, confidently, and never give up where females are better than males; (2) subjects with medium levels of self-efficacy can fulfill three indicators well and confident, in which males are better than females; (3) subjects with low levels of self-efficacy only fulfill one indicator at making a plan which showed an attitude of giving up and not being confident, where females were better than males.
Application of Socrative-Based Assessment to Measure Mathematical Creative Thinking Ability with Problem Based Learning Model Viewed from Curiosity
Authors: Sari Devita Noor Kumala , Masrukan Masrukan
Published: August 2024

The study aims to (1) test whether the Problem Based Learning model with the application of Socrative-based assessment was effective for measuring students' mathematical creative thinking abilities and (2) describe mathematical creative thinking ability in terms of curiosity in Problem Based Learning model with the application of Socrative-based assessments. The research was included in the mix-method with a sequential explanatory design. The results showed that (1) Problem Based Learning with the application of Socrative assessment was said to be effective for measuring students' mathematical creative thinking abilities; (2) a description of students' mathematical creative thinking ability in terms of curiosity, it was found that students with a high level of curiosity were able to meet the indicators of creative thinking ability elaboration, originality, fluency, and flexibility and were able to explain how to solve smoothly with logical reasons, and students with a medium level of curiosity meeting the indicators of creative thinking ability of elaboration, fluency, and flexibility and being able to explain how to solve it smoothly with logical reasons, and students with a low level of curiosity fulfilling the indicators of creative thinking ability of elaboration and fluency and less able to explain how to solve it smoothly with logical reasons.
Effectiveness of Problem Based Learning Integrated STEAM on Students’ Mathematical Problem Solving Ability
Authors: Rahmatjati Abdul Mu'iz , Ardiansyah Adi Satrio , Rochmad Rochmad
Published: August 2024

This study aims to determine the effectiveness of the Problem Based Learning (PBL) integrated STEAM on students' mathematical problem solving abilities. The population in this study were students of class VIII in Junior High School 1 Pringapus. The sample in this study were students of class VIII B as the experimental group and class VIII A as the control group. The sampling technique in the quantitative method in this study used a simple random sampling technique. The data collection technique used in this study was a test technique to obtain data on students' mathematical problem solving abilities. Based on the results of the study, it can be concluded that: (1) the average test results for students' mathematical problem solving abilities using the PBL integrated STEAM achieve individual completeness of 75; (2) the proportion of students' mathematical problem solving ability test results using the PBL integrated STEAM achieves 85% classical completeness; (3) the average test results for students' mathematical problem solving abilities with the PBL integrated STEAM are more than the average test results for students' mathematical problem solving abilities with the PBL; (4) the completeness proportion of students' mathematical problem solving ability test results using the PBL integrated STEAM is more than the completeness proportion of students' mathematical problem solving ability test results using the PBL. So, it can be concluded that the PBL integrated STEAM is more effective than the PBL.
KEEFEKTIFAN MODEL PEMBELAJARAN TWO STAY TWO STRAY BERBASIS REALISTIC MATHEMATICS EDUCATION TERHADAP KEMAMPUAN PENALARAN MATEMATIK
Authors: Hartriani Novita , Veronica Rahayu Budhiati
Published: August 2024

Penelitian ini bertujuan: (1) untuk mengetahui apakah terdapat perbedaan rata-rata hasil belajar antara menggunakan model pembelajaran TSTS berbasis RME dengan model pembelajaran ekspositori; (2) untuk mengetahui apakah rata-rata hasil belajarÂ  yang menggunakan model pembelajaran TSTS berbasis RME lebih dari yang menggunakan model ekspositori; dan (3) untuk mengetahui keefektifan model pembelajaran TSTS berbasis RME terhadap kemampuan penalaran matematik. Populasi dalam penelitian ini adalah peserta didik kelas VIII SMP Kesatrian 2 Semarang, pada semester 2 tahun ajaran 2013/2014. Pengambilan sampel menggunakan teknik Random Sampling. Metode pengumpulan data menggunakan metode dokumentasi dan tes. Hasil penelitian setelah dianalisis diperoleh: (1) terdapat perbedaan rata-rata hasil belajar; (2) rata-rata hasil belajar yang menggunakan model pembelajaran TSTS berbasis RME lebih dari yang menggunakan model pembelajaran ekspositori; dan (3) model pembelajaran TSTS berbasis RME efektif. Simpulan penelitian ini adalah model pembelajaran TSTS berbasis RME efektif terhadap kemampuan penalaran matematik
KEEFEKTIFAN PEMBELAJARAN TAPPS STRATEGI REACT TERHADAP KEMAMPUAN KOMUNIKASI MATEMATIS PESERTA DIDIK KELAS VIII MATERI LINGKARAN
Authors: Isnaeni Ari , Mashuri Mashuri , Hendikawati Putriaji
Published: August 2024

Penelitian ini dilakukan untuk mengetahui keefektifan pembelajaran TAPPS strategi REACT terhadap kemampuan komunikasi matematis peserta didik kelas VIII pada materi lingkaran. Populasi dalam penelitian ini adalah peserta didik kelas VIII SMPN 3 Ungaran tahun ajaran 2014/2015 yang sampelnya diambil secara cluster random sampling. Kemampuan komunikasi matematis peserta didik diambil berdasarkan metode tes. Hasil dari penelitian ini adalah: pembelajaran TAPPS strategi REACT tuntas dan rata-rata kemampuan komunikasi matematis peserta didik mencapai KKM; persentase ketuntasan belajar peserta didik padapembelajaran TAPPS strategi REACT lebih tinggi daripada persentaseketuntasan belajar peserta didik pada pembelajaran DI; serta rata-ratakemampuan komunikasi matematis peserta didik pada pembelajaran TAPPS strategi REACT lebih tinggi daripada rata-rata kemampuan komunikasi matematis peserta didik pada pembelajaran DI. Hasil tersebut menunjukkan bahwa: (1) pembelajaran TAPPS strategi REACT efektif terhadap kemampuan komunikasi matematis peserta didik pada sub materi garis singgung lingkaran; dan (2) pembelajaran TAPPS strategi REACT lebih efektif daripada pembelajaran DI terhadap kemampuan komunikasi matematis peserta didik.
KEEFEKTIFAN MODEL PROBLEM-BASED LEARNING DENGAN PENDEKATAN SAINTIFIK TERHADAP KEMAMPUAN PEMECAHAN MASALAH DAN KEMANDIRIAN BELAJAR PESERTA DIDIK KELAS VII
Authors: Lestari Pinta Dian , Dwijanto Dwijanto , Hendikawati Putriaji
Published: August 2024

Tujuan penelitian adalah untuk mengetahui: (1) pembelajaran model PBL dengan pendekatan saintifik terhadap kemampuan pemecahan masalah matematis dan kemandirian belajar peserta didik kelas VII SMP Negeri 41 Semarang pada materi segiempat efektif; (2) ada pengaruh kemandirian belajar terhadap kemampuan pemecahan masalah matematis peserta didik kelas VII SMP Negeri 41 Semarang pada pembelajaran yang menggunakan model PBL dengan pendekatan saintifik. Populasi dalam penelitian ini adalah peserta didik kelas VII SMP Negeri 41 Semarang tahun ajaran 2014/2015. Sampel penelitian diambil dengan teknik cluster random sampling yang diperoleh kelas VII B sebagai kelas eksperimen dan kelas VII C sebagai kelas kontrol. Pengumpulan data dengan metode dokumentasi, tes, observasi dan skala sikap. Uji hipotesis yang digunakan adalah uji rata-rata, uji proporsi, uji perbedaan dua rata-rata dan analisis regresi. Hasil penelitian menunjukkan bahwa: (1) pembelajaran model PBL dengan pendekatan saintifik terhadap kemampuan pemecahan masalah dan kemandirian belajar peserta didik kelas VII SMP Negeri 41 Semarang pada materi segiempat efektif; (2) kemandirian belajar memiliki pengaruh yang positif terhadap kemampuan pemecahan masalah matematis peserta didik kelas VII SMP Negeri 41 Semarang pada materi segiempat yang menggunakan model PBL dengan pendekatan saintifik.
Kemampuan Literasi Matematika Peserta Didik pada Pembelajaran Realistik Berbantuan Edmodo
Authors: Kusuma Bagus Jati , Wardono Wardono , WINARTI ENDANG RETNO
Published: August 2024

Tujuan penelitian ini untuk mengetahui pembelajaran PBL dengan pendekatan saintifik realistik berbantuan Edmodo (PBL-PSR-E), pembelajaran PBL dengan pendekatan saintifik realistik (PBL-PSR) dan pembelajaran dengan pendekatan saintifik saja (PS) dalam meningkatkan kemampuan literasi matematika peserta didik; dan untuk mengetahui perbedaan rata-rata kemampuan literasi matematika peserta didik yang diberi ketiga pembelajaran tersebut. Populasi dalam penelitian ini adalah 270 peserta didik kelas VIII SMP N 21 Semarang tahun pelajaran 2015/2016 yang terdiri dari 9 kelas. Pengambilan sampel menggunakan teknik random sampling. Terpilih tiga kelompok sampel yaitu peserta didik kelas VIII H sebagai kelompok eksperimen 1,peserta didik kelas VIII I sebagai kelompok eksperimen 2, dan peserta didik kelas VIII G sebagai kelompok kontrol. Analisis data menggunakan uji gain dan uji one way anova. Diperoleh hasil bahwa penerapan pembelajaran PBL-PSR-E, pembelajaran PBL-PSR dan PS dapat meningkatkan rata-rata kemampuan literasi matematika peserta didik serta ratarata kemampuan literasi matematika peserta didik kelas VIII SMP N 21 Semarang menggunakan pembelajaran PBL-PSR-E lebih dari peserta didik kelas VIII SMP N 21 Semarang yang diberi pembelajaran PS tetapi tidak lebih dari peserta didik kelas VIII SMP N 21 Semarang yang diberi pembelajaran PBL-PSR.
 
The purpose of this study is to determine PBL with scientific realistic approach assisted by Edmodo (PBL-PSR-E), learning PBL with scientific realistic approach (PBL-PSR) and scientific approach course (PS) in increasing the average mathematical literacy skills of learner; and to find out the difference of the average in mathematical literacy skills of learners using those three learnings.The population in this study were 270 students in class VIII SMP N 21 Semarang 2015/2016 school year in nine classes. The sampling using random sampling. Voted three sample groups is class VIII H as the experimental group 1, class VIII I as the experimental group 2, and VIII G as the control group. Analysis of the data using the gain test and one way ANOVA test.The results indicate that the application of PBL -PSR-E learning, PBL-PSR learning and PS learning can increase the average of VIII grade SMP N 21 Semarang studentâ€™s mathematical literacy using PBL-PSR-E learning more than the average of VIII grade SMP N 21 Semarang studentâ€™s mathematical literacy that have been taught using the PS but not more than the average of VIII grade SMP N 21 Semarang studentâ€™s mathematical literacy skills that have been taught using PBL-PSR learning
Analisis Kemampuan Representasi Matematis Ditinjau dari Karakteristik Cara Berpikir Peserta Didik dalam Pembelajaran dengan Pendekatan Saintifik
Authors: Kholiqowati Heni , Sugiarto Sugiarto , Hidayah Isti
Published: August 2024

Penelitian ini bertujuan untuk mengetahui ketuntasan hasil belajar peserta didik dan mendeskripsikan kemampuan representasi matematis ditinjau dari karakteristik cara berpikir peserta didik tipe Sekuensial Konkret (SK), Sekuensial Acak (SA), Acak Abstrak (AA), dan Acak Konkret (AK). Subjek penelitian ini adalah peserta didik kelas VIII C SMP Negeri 1 Kunduran. Metode pengumpulan data menggunakan angket karakteristik cara berpikir, tes ketuntasan materi kubus dan balok, tes kemampuan representasi matematis, dan wawancara. Hasil penelitian menunjukkan bahwa: (1) hasil belajar peserta didik pada materi kubus dan balok dalam pembelajaran dengan pendekatan saintifik mencapai ketuntasan klasikal dan (2) kemampuan representasi matematis ditinjau dari karakteristik cara berpikir peserta didik adalah (a) peserta didik tipe SK mempunyai kemampuan representasi visual dan simbolik sangat baik dan kemampuan representasi verbal kurang sekali; (b) peserta didik tipe SA mempunyai kemampuan representasi visual dan simbolik sangat baik, dan kemampuan representasi verbal kurang sekali; (c) peserta didik tipe AA mempunyai kemampuan representasi visual dan simbolik baik dan kemampuan representasi verbal kurang sekali; dan (d) peserta didik tipe AK mempunyai kemampuan representasi visuali baik, kemampuan representasi simbolik cukup, dan kemampuan representasi verbal kurang sekali.
 
This purpose of this research is to determine the studentsâ€™s thoroughness of the study and describes mathematical representation ability viewed from studentsâ€™s way of thinking characteristic Concrete Sequential, Abstract Sequential, Abstract Random, and Concrete Random types. The subjects of this research are students of 8th-C grade Junior High School 1 Kunduran. The methods of data collection of this research are questionnaires of way of thinking characteristic, cubes and blocks completeness test, mathematical representation ability test, and interviews. The results showed that: (1) the learning outcomes of students on the cubes and blocks that implement learning with the scientific approach achieve mastery of classical and (2) the studentsâ€™s mathematical representation ability with way of thinking characteristic are (a) the students with Concrete Sequential type have very good visual and symbolic representation ability and less verbal representation ability; (b) the students with Abstract Sequential type have very good visual and symbolic representation ability and less verbal representation ability; (c) the students with Abstract Random type have good visual and symbolic representation ability and less verbal representation ability; and (d) the students with Concrete Random type have good visual representation ability, enough symbolic representation ability, and less verbal representation ability.
KEEFEKTIFAN IMPLEMENTASI MODEL PEMBELAJARAN MEANS-ENDS ANALYSIS DENGAN BRAINSTORMING TERHADAP HASIL BELAJAR
Authors: Pratiwi Dyah Ayu , Dwidayati Nurkaromah , Veronica Rahayu Budhiati
Published: August 2024

Penelitian ini bertujuan untuk mengetahui apakah model pembelajaran means-ends analysis dengan brainstorming efektif terhadap hasil belajar peserta didik SMP kelas VII materi pokok segiempat. Penelitian ini merupakan penelitian kuantitatif. Populasi penelitian ini adalah peserta didik kelas VII SMP Negeri 2 Kaliori tahun ajaran 2015/2016. Menggunakan teknik simple random sampling terpilih kelas VII-3 sebagai kelas eksperimen dan kelas VII-4 sebagai kelas kontrol. Data diperoleh dengan metode dokumentasi, tes dan observasi. Analisis data yang digunakan adalah uji ketuntasan klasikal, uji kesamaan rata-rata, dan presentase keaktifan. Hasil penelitian menunjukkan bahwa: (1) hasil belajar peserta didik kelas VII SMP Negeri 2 Kaliori menggunakan model pembelajaran means-ends analysis dengan brainstorming mencapai ketuntasan belajar; (2) hasil belajar peserta didik kelas VII SMP Negeri 2 Kaliori menggunakan model pembelajaran means-ends analysis dengan brainstorming lebih baik dari hasil belajar peserta didik menggunakan pembelajaran langsung dengan peta konsep; (3) keaktifan peserta didik kelas VII SMP Negeri 2 Kaliori menggunakan model pembelajaran means-ends analysis dengan brainstorming lebih baik dari keaktifan peserta didik menggunakan pembelajaran langsung dengan peta konsep.The purpose of this study was to determine whether the model of means-ends analysis with brainstorming effective to the student learning outcomes of seven grade Junior High School subject matter quadrilateral. This study is quantitative. The population in this study were students of seven grade Juior High School 2 Kaliori in the academic year 2015/2016. By simple random sampling technique, VII-3 class eas selected as the experimental class and the clas VII-4 was selected as the control class. The data collected by the method of documentation, test methods, and observation methods. Test data are analyzed using mathematichal communication of mastery test clasical average, average comparisons, and percentage of liveliness. The result showed taht: (1) student learning outcomes of seven grade Juior High School 2 Kaliori using model of means-ends analysis with brainstorming mastery learning; (2) student learning outcomes of seven grade Juior High School 2 Kaliori using model of means-ends analysis with brainstorming better than student learning outcomes using direct learning with concept maps; (3) liveliness of seven grade Juior High School 2 Kaliori using model of means-ends analysis with brainstorming better than liveliness using direct learning with concept maps.
Analisis Kemampuan Koneksi Matematika Siswa Kelas VIII pada Model Eliciting Activities (MEA) Ditinjau dari Gaya Kognitif
Authors: Setyaningsih Lusianna , ASIKIN MOHAMMAD , Mariani Scolastika
Published: August 2024

Tujuan penelitian ini (1) mengetahui apakah kemampuan koneksi matematika siswa kelas VIII pada MEA lebih baik daripada kemampuan koneksi matematika siswa pada model ekspositori, (2) mengetahui apakah terdapat perbedaan kemampuan koneksi matematika siswa FD dan FI, dan (3) mendeskripsikan kemampuan koneksi matematika pada MEA berdasarkan gaya kognitif. Jenis penelitian ini adalah mixed method dengan populasi siswa kelas VIII. Kelas sampel terdiri atas VIIIA dan VIIIB. Subjek penelitian terdiri dari 6 siswa. Teknik pengumpulan data meliputi observasi, dokumentasi, tes koneksi matematika, GEFT, dan wawancara. Hasil penelitian menunjukkan bahwa (1) kemampuan koneksi matematika siswa pada MEA lebih baik dibandingkan pada ekspositori; (2) terdapat perbedaan kemampuan koneksi matematika siswa FD dan FI; (3) siswa FD mampu mencari dan memahami hubungan antar topik dan antara topik matematika dengan topik di luar matematika, serta menerapkan matematika dalam kehidupan, tetapi siswa FD tidak mampu menerapkan matematika dalam disiplin ilmu lain, tidak mampu memahami representasi, dan tidak mampu sampai kurang mampu mencari hubungan satu prosedur dengan prosedur lain; sedangkan,  siswa FI mampu mencari dan memahami hubungan antar topik dan antara topik matematika dengan topik di luar matematika, memahami representasi, menerapkan matematika dalam bidang lain dan kehidupan, dan mencari hubungan satu prosedur dengan prosedur lain.
 
The purpose of this study were (1) determine whether the mathematical connection ability of eighth grader student on MEA is better than the mathematical connection ability on expository, (2) determine whether there are differences mathematical connection ability of FD and FI students, and (3) describe the mathematical connection ability on MEA based on cognitive style. This study is mix method with the population were eighth grader students. The sample class were VIIIA and VIIIB. Subjects consisted of 6 students. Data collection techniques including observation, documentation, mathematical connection test, GEFT, and interviews. The results showed that (1) the mathematical connection ability of student on MEA is better than on expository; (2) there are differences in mathematical connection ability of students FD and FI; (3) students FD are able to find and understand the relationships between topics and between mathematical topic and outside mathematical topic, and apply mathematics in life, but students FD unable to apply mathematics in other disciplines, unable to understand the representation, and not able to less able to find the relationship of the procedure with another procedure; whereas, students  FI were able to find and understand the relationships between topics and between mathematical topic and outside mathematical topic, understand representation, applying mathematics in other disciplines and life, and find the relationship of the procedure with another procedure.