bluuebunny/crossref_metadata_2025 huggingface dataset:
Integrating IPR Integrity and Freedom of Expression: A Normative Analysis
Authors: Budi V. Henry Soelistyo , Girodon-Hutagalung Matahari , Irawati Jovita
Published: August 2024

Algorithm as a digital innovation plays a crucial role in facilitating communication and public discourse. Its utilization is a significant issue that must be carefully analyzed to ensure it doesn’t impede key human rights, specifically the right to freedom of expression. The widespread use of digital platforms has created an urgency to examine this issue. The purpose of this study is to analyze the interaction between algorithms as digital innovations, their protection through the relevant IPR regimes, and their implications on freedom of expression. Through normative legal research methods and a statutory approach, this research finds that among various intellectual property regimes, the patent system offers the best potential for balancing the protection of algorithmic innovations with transparency. However, the analysis also reveals that current patent regulations still lack certain provisions to adequately safeguard freedom of expression in relation to patented algorithms. This research offers a proposed model of development that can be utilized to improve Indonesia’s protection of the right to freedom of expression through the patent regime, while also protecting algorithms as a key digital innovation.
Revitalising Indigenous Rights Participation in Mining Lawmaking Process: Evaluation and Proposal for Indonesia
Authors: Nur Asrul Ibrahim , Al Fatih Sholahuddin , Intania Christina Clarissa
Published: August 2024

Indonesia's climate ambition, particularly in developing an electric vehicle ecosystem, has made significant progress since 2019 through the adoption of various legal instruments leading to mining law reform. These initiatives include establishing an electric vehicle battery industry supported by downstream mining policies. This policy ensures the availability of metal ores, such as nickel, which is a key raw material for the battery industry. However, Indigenous communities living near mining areas designated as National Strategic Projects have experienced negative impacts, including environmental damage.This study posits that environmental damage is a consequence of excluding Indigenous communities from mining policy reforms, as they traditionally serve as protectors of the environment. The primary aim of this study is to analyze the importance of Indigenous peoples’ meaningful participation and to examine the tendency of Indonesia’s mining law reforms to overlook Indigenous involvement in environmental preservation. This paper employs a doctrinal and normative approach to statutory laws.The research underscores the urgency of ensuring meaningful participation of Indigenous peoples in mining law reforms and suggests methods for restoring their right to participate through available forums and legal instruments. The paper proposes several steps to accommodate Indigenous peoples’ aspirations in legislation: first, addressing the loss of identity experienced by Indigenous peoples; second, optimizing the use of existing representative offices in each province; and third, implementing a system that allows Indigenous peoples to easily express their aspirations and complaints.
Wyklejanie, dyspozycje i performatyka w koncertach fortepianowych Bogusława Schaeffera
Authors: Atys Szymon
Published: August 2024

Bogusław Schaeffer (1929–2019) was one of the most prominent figures of the Polish musical avant-garde in the 20th century. This article focuses on Schaeffer’s six Piano Concertos and is based on a logocentric analysis of the pieces. Studying Schaeffer’s declared aesthetics has revealed that ‘innovation’ (invention of something without precedence) was a key concept organising his music, which became the foundation of the performed analysis. Subsequently, the pieces are described by areas of musical material and other aspects of composition (technology of sound, notation, melosphere, chronosphere, sonosphere, texture, form and performance). Three newly discovered aspects of Schaeffer’s compositional craft are distinguished: collage of the composer’s own musical material, practical consequences of the composer’s declared ‘orchestral dispositions’ technique and theatrical aspects of musical performance. Their aim is interpreted as devaluing the role of the musical material in favour of musical texture and the executional act. Contradictions noticed in Schaeffer’s compositional craft lead to the conclusion that Schaeffer’s late music can be described as an example of Said’s ‘Late style’.
Guwernantka carówny. Losy i perspektywa Jeanne Huc-Mazelet w świetle jej korespondencji z pobytu na rosyjskim dworze (1790-1804)
Authors: Strzelczyk Agata
Published: August 2024

These article’s aim is to look into and analyze the letters written by Jeanne Huc-Mazelet, the governess of the Grand Duchess Maria Pavlovna of Russia (1790-1804). Born in Morges, Switzerland, Jeanne Huc-Mazelet was one of the few Swiss educators employed by the royal family of Russia to teach their children. She spent fourteen years in Russia and wrote many letters to her family in Switzerland. The letters are a valuable resource to study the everyday life of the Russian court and the princesses’ education. It also offers an interesting glimpse into the life of the author.
Stimulus-responsive MOF–hydrogel composites: Classification, preparation, characterization, and their advancement in medical treatments
Authors: Toh Jia En , Lee Choy Sin , Lim Wei Huei , Pichika Mallikarjuna Rao , Chua Bing Wei
Published: August 2024

Metal–organic frameworks (MOFs) have attracted chemical and material research interests in recent years due to their incredibly prominent properties and unique structures. Although MOFs have many unique characteristics, including tunable pore structures and functionality, their application performances are hindered by their powdered crystalline state, intrinsic fragility, poor processability, and stability. Recent studies have shown that the incorporation of MOFs into hydrogel outperforms the MOFs in their crystalline state. This article presents the current development of stimulus-responsive MOF–hydrogel composites in terms of synthesis of MOF and preparation of MOF–hydrogel, characterization, and advancement of stimulus-responsive MOF–hydrogel composite in drug delivery and wound management. The article also discusses prospective study directions, delineating potential avenues for further exploration and innovation in this dynamic field.
Resenhas
Authors: Heemann Christiane , Claudia Pereira de Almeida Ana , Endres Soares Alícia , Brasil Irala Valesca , Pereira Bittencourt Guilherme
Published: August 2024

Esta seção contém resenhas de cinco livros.
Um olhar sociolinguístico sobre as interações do teletandem
Authors: Garcia Daniela Nogueira de Moraes
Published: August 2024

Este artigo enfoca a diversidade e as variações linguísticas nas interações por emails e chats nas parcerias de teletandem. Partindo-se da interface entre aquisição de língua estrangeira e a sociolinguística, abordamos as variantes linguísticas sob a perspectiva das variações sociais da língua, em especial com relação à norma culta e popular da língua portuguesa no contexto teletandem. Buscamos, na Sociolinguística, luz para as análises e enfoques que pretendemos fazer nas interações de teletandem e discorremos sobre o Projeto Teletandem Brasil, suas ideias e orientações teóricas, a partir de dados coletados. Os resultados deste estudo revelam que as variações nas produções dos estrangeiros, aprendizes do português, são oriundas de flutuações entre a norma culta e a coloquial por ainda não apresentarem plena competência comunicativa na língua-alvo.
A prática avaliativa em uma instituição privada de ensino de língua estrangeira
Authors: Fernando Rocha Celso
Published: August 2024

O presente trabalho tem como objetivo descrever as práticas e concepções de avaliação de uma escola de idiomas. Para isso, recorremos aos trabalhos de Demo (2002a, 2002b), Luckesi (2001), Romão (2001), Shohamy (2001), Hughes (1994) e Depresbiteris (1989). Com relação aos instrumentos de coleta, fizemos uso de questionários, entrevistas, discussões em grupo e diários. Os resultados mostram que os tópicos “medo da prova” e “conteúdo da prova” foram os mais recorrentes. Além disso, observamos a existência de uma relação harmoniosa entre aluno e professor quanto à aplicação de provas. Tal fato pode ser explicado devido ao estabelecimento do “contrato tácito” entre ambos, ou seja, há um conteúdo mínimo a ser estudado pelo estudante e a ser aplicado pelo docente. Cabe salientar que, muitas vezes, a prática de sala de aula contemplava um número maior de atividades didáticas com um nível de complexidade superior ao que fora exigido nas provas aplicadas.
O falante nativo de inglês versus o falante não-nativo
Authors: Janaina Figueredo Carla
Published: August 2024

Este estudo pretende refletir sobre algumas representações em torno do falante nativo de inglês e do falante não-nativo para que, dessa forma, possamos compreender as práticas discursivas de um professor de inglês e seus alunos, as quais são reveladoras de suas percepções acerca dessa dicotomia. Com base nas diretrizes da pesquisa de cunho etnográfico, observamos que três aprendizes se revelaram conscientes de sua legitimidade como falantes de inglês. No entanto, ainda é possível evidenciar entre os membros da sala de aula investigada a percepção de que o falante nativo de inglês é superior ao não-nativo. Nesse sentido, as práticas discursivas de professor e alunos nos apontam para a urgência de discussões que problematizem essa dicotomia no contexto da sala de aula de inglês como L2/LE a fim de esclarecer quem de fato é possuidor da língua inglesa.
Explored Ethnomathematics on Silahisabungan Monument
Authors: Astuti Safariah , Rakhmawati Fibri
Published: August 2024

Ethnomathematics is one technique that explains the various cultural contexts associated with mathematics applied by a particular community. SilahiSabungan Monument is a monument that holds significant meaning for the Toba Batak community in North Sumatra, Indonesia. Through an ethnomathematical approach, this research explores and analyzes the relationship between the symbols and forms found at SilahiSabungan Monument with underlying mathematical concepts. The research method used is qualitative research. The results of this study indicate that the shapes and symbols at SilahiSabungan Monument are related to concepts of plane geometry. For example, shapes like rectangles, trapezoids, and others on the monument can be connected with concepts of plane geometry. This demonstrates the richness of mathematical knowledge within Toba Batak culture. This ethnomathematical exploration provides a deeper understanding of the relationship between culture and mathematics in the context of the SilahiSabungan Monument. This research makes an important contribution to expanding the insights and understanding of researchers and the community about ethnomathematics and the importance of preserving and respecting cultural heritage and traditional knowledge. Further exploration of ethnomathematics at SilahiSabungan Monument can provide new perspectives in understanding and appreciating the cultural and mathematical diversity in Indonesia.
Analysis of Mathematical Concepts in the Traditional Palak Babi Game of Bengkulu Province
Authors: Harahap Mardhatillah Hafidzah , Risnanosanti Risnanosanti , Kashardi Kashardi
Published: August 2024

Analysis of Mathematical Concepts in the Traditional Palak Babi Game of Bengkulu Province. Culture is the identity of a nation that is formed from values, beliefs, customs, and norms that are held firmly and passed down from generation to generation. The culture of a region is reflected in various aspects of people's lives, one of which is through traditional games in Bengkulu Province. The traditional game is the traditional Palak Babi game, which effectively contributes to building mathematical concepts. Mathematical concepts appear in society and culture. Ethnomathematics is the study of mathematical concepts in traditional games as a culture. The purpose of this research was to analyze the mathematical concepts that were naturally involved in the traditional Palak Babi game. The method used in this research was the descriptive qualitative method. The concepts include measurement, comparison, addition, multiplication, and angles. Thus, the traditional Palak Babi game as part of culture contains valuable ethnomathematical values. Therefore, it can provide new insights into developing more contextualized mathematics learning strategies and expand understanding of mathematics.
Mathematical problem solving ability of 8th grade students in terms of adversity quotient using discovery learning
Authors: Istiqomah Sayidah Nur , Suyitno Hardi , Safa'atullah Muh. Fajar
Published: August 2024

The purpose of this research was to (1) find out the completeness of mathematical problem-solving abilities of 8th-grade students in Discovery Learning; (2) description of mathematical problem-solving abilities aspects of 8th-grade students who have a climbers types; (3) description of mathematical problem-solving abilities aspects of grade 8th students who have a campers types; (4) description of mathematical problem-solving abilities aspects of 8th-grade students who have a quitters types. This research is mixed methods using a sequential explanatory model. The design is a one-shot case study. The sample class is 8D. Research subjects consisted of 2 students of climbers types and 4 students of climbers types. The results showed that (1) mathematical problem-solving abilities of 8th-grade students in Discovery Learning achieved classical and individual completeness; (2) climbers students can solve all of the problem-solving indicators; (3) ) campers students can solve three of problem-solving indicators; (4) quitters students were not found in this research so couldn’t be described.
Mathematical communication ability of 7th grade in SAVI learning with elaborated feedback
Authors: Kurniawati Devy , Kartono Kartono
Published: August 2024

Mathematical communication ability is important to communicate ideas and improve students' understanding. The purpose of this study was to examine the effectiveness of SAVI learning with elaborating feedback towards the students' achievement of mathematical communication abilities; and to describe how to students' achievement of mathematical communication abilities with elaborated feedback. The population of this study is 7th-grade students in one of the junior high schools in the city of Semarang year 2018/2019. Sampling by simple random sampling techniques and subject selection with purposive sampling technique. The results of the study showed that SAVI learning with elaborated feedback is effective in the students' achievement of mathematical communication abilities. Description of students' mathematical communication abilities, namely (a) high group subject have mastered four indicators of mathematical communication; (b) medium group subject have mastered three indicators of mathematical communication, and (c) the low group subject have mastered 2 and 3 indicators of mathematical communication.
Development of STEM Based Mathematics Learning Instruments to Improve Students’ Critical Thinking Skills in PBL Model
Authors: Rahmawati Imanina Fitri , Isnarto Isnarto
Published: August 2024

The research aim was to develop STEM-based learning instruments to improve students' critical thinking skills used in the PBL model that was valid, practical, and readable by students. The research used a simplified 4-D development model in the research and development research method, which consisted of three stages; define, design, and develop. It was because of the Covid-19 pandemic that the learning process was held online, and the effectiveness testing or dissemination stage couldn’t be held. The learning instruments consisted of a syllabus, lesson plan, learning material, and student worksheet. Learning instruments’ validation testing stated that the learning instruments were valid with the average scores for syllabus was 3.82 out of 4.00, for lesson plan was 3.79 out of 4.00, for learning material was 3.85 out of 4.00, and for student’ worksheet was 3.80 out of 4.00. Learning instruments’ practicality testing stated that the learning instruments were practical to be used during the learning process, with scores of it were 97.50% for syllabus, 96.43% for the lesson plan, 95.83% for learning material, and 93.06% for student worksheets. Learning instruments’ readability testing stated that the learning instruments were readable by students, with scores of it were 82.78% for learning material and 80.83% for students’ worksheets.
Classification of figures in primary school based on van Hiele’s model: Report of two cases
Authors: De León-Zamora Wendy Loraine , Juárez-López José Antonio , Juárez-Ruiz Estela De Lourdes
Published: August 2024

In this paper, the results of an investigation based on an activity on the recognition of geometric shapes are reported, where different figures were presented that must be classified in order to identify the level of reasoning of each student. The present investigation follows a qualitative method and the data collection was carried out through clinical interviews applied to two children, an 8-year-old boy and a 10-year-old girl, who at that time were in the third and fourth grades of primary school respectively, in the State of Puebla, Mexico. Among the main results, it stands out that both children were located at level 0 of reasoning according to van Hiele's classification, since they recognize geometric shapes by their physical appearance, not by their properties and relationships.
Development of Numeracy and Literacy-based Probability Teaching Materials
Authors: Alfarisy Hafiz , Awalludin Subhan Ajiz
Published: August 2024

The aim of this research was to develop a product based on numeracy skills through teaching materials. This study used a research and development (R&D) methodology approach using the ADDIE model. This research aimed to develop a product based on numeracy literacy through teaching materials. This research used research and development (R&D) with the ADDIE model. The participants in this study were categorized into two groups, large groups and small groups of grade 10 from SMAN in one of the cities of East Jakarta. Data collection included an expert test with three expert validators, material, media, and language, and an interview and student response questionnaire. The results of product development form teaching materials based on numeracy literacy using Flip PDF Corporate Edition. The results from material expert, media expert, and linguist expert validation obtained an average score of with the category "Excellent". As a result, it can be concluded that teaching materials based on numeracy literacy are eligible for use as teaching materials probability.
Development of Android-Based Interactive Learning Media with STEM Nuances to Improve Creative Thinking Skills of Grade VIII Students
Authors: Hidayah Fatimah Nurul , Sutarto Hery
Published: August 2024

This research aims to develop android-based interactive learning media with STEM nuances to improve students' creative thinking skills that are feasible and effective. The learning media was developed using iSpring software. This software is integrated with Microsoft Powerpoint which can make the learning media more interactive. The final form of learning media is an android application. The learning media is given STEM nuances and activities to facilitate students' creative thinking skills. STEM is a learning approach that connects science, technology, engineering, and mathematics. The indicators of creative thinking skills used are fluency, flexibility, originality, and elaboration. The development model used in this research is 4D (Define, Design, Development, Disseminate), but only up to the development stage. This research produces android-based interactive learning media with STEM nuances to improve the creative thinking skills of junior high school students in grade VIII that are feasible and effective. Media and material validation respectively obtained a score of 91.5% and 91.2% which included a very feasible category. The effectiveness of the media is shown in the improvement of students' creative thinking skills. The N-Gain test obtained shows that the increase in students' abilities has increased which is classified as moderate.
Effectiveness of Jigsaw Type Cooperative Learning Model on Mathematical Problem Solving Ability Viewed from Student Learning Motivation
Authors: Rahmawati Rina , Pujiastuti Emi
Published: August 2024

Mathematical problem-solving skills are one of the main things in learning mathematics and must be developed in students. One of the learning models that is effective and considered capable of improving and improving mathematical problem-solving skills is the jigsaw-type cooperative learning model. This study aims to determine the effectiveness of the jigsaw-type cooperative learning model on mathematical problem-solving ability, analyze the influence of learning motivation on students' mathematical problem-solving ability on the jigsaw-type cooperative learning model, and describe mathematical problem-solving ability in terms of learning motivation in the jigsaw-type cooperative learning model. This study used mixed methods with a sequential explanatory design. The population of this study was all grade VII students of SMP N 1 Tambakromo for the 2021/2022 School Year. This research sample was obtained using a class random technique, namely class VII C students as an experimental group and class VII A students as a control group. There were 6 qualitative subjects drawn from the experimental group, namely 2 students with high learning motivation, 2 students with moderate learning motivation, and 2 students with low learning motivation.  The results showed that (1) The jigsaw-type cooperative learning model is effective on students' mathematical problem-solving abilities; (2) There was a positive influence of student learning motivation on mathematical problem-solving ability in the jigsaw-type cooperative learning model of 48.4%; and (3) students with high learning motivation have high problem-solving ability, students with moderate learning motivation have moderate problem-solving ability, while students with low learning motivation.
KEEFEKTIFAN MODEL PEMBELAJARAN AIR DENGAN PENDEKATAN RME TERHADAP KEMAMPUAN KOMUNIKASI MATEMATIK MATERI GEOMETRI KELAS VII
Authors: Latifah Nana Umi , Agoestanto Arief
Published: August 2024

Tujuan penelitian ini adalah untuk mengetahui apakah pembelajaran model AIR dengan pendekatan RME efektif terhadap kemampuan komunikasi matematik peserta didik daripada pembelajaran ekspositori, serta untuk mengetahui apakah pembelajaran model AIR dengan pendekatan RME efektif terhadap kemampuan komunikasi matematik terkait dengan tingkat kemampuan awal rendah, sedang maupun tinggi. Populasi dalam penelitian ini adalah seluruh peserta didik kelas VII SMP Negeri 5 Blora tahun pelajaran 2013/2014. Pengambilan sampel menggunakan teknik Simple Random Sampling dan terpilih 37 peserta didik sebagai kelas eksperimen, dan 37 peserta didik sebagai kelas kontrol. Data diperoleh melalui metode dokumentasi, tes, dan observasi. Analisis data kemampuan komunikasi matematik meliputi uji normalitas dengan uji Kolmogorov-Smirnov, uji homogenitas dengan uji Levene, dan uji kesamaan dua rata-rata menggunakan pihak kanan dengan Independent Samples T-test. Simpulan yang diperoleh adalah penerapan model pembelajaran AIR dengan pendekatan RME efektif terhadap kemampuan komunikasi matematik peserta didik daripada pembelajaran ekspositori, serta penerapan model pembelajaran AIR dengan pendekatan RME efektif terhadap kemampuan komunikasi matematik pada peserta didik berkemampuan awal tinggi daripada pembelajaran ekspositori namun kurang efektif penerapannya pada peserta didik berkemampuan awal rendah dan sedang.
KOMPARASI KEMAMPUAN PEMECAHAN MASALAH SISWA ANTARA MODEL PEMBELAJARAN MMP DAN PAIRS CHECK
Authors: Syah Muhammad Ardian , Susilo Bambang Eko
Published: August 2024

Tujuan penelitian ini adalah untuk (1) mengetahui apakah kemampuan pemecahan masalah siswa kelas X materi trigonometri dengan model pembelajaran Mathematics Missouri Project (MMP) dan Pairs Check mencapai ketuntasan belajar dan (2) mengetahui apakah terdapat perbedaan signifikan kemampuanÂ  pemecahan masalah siswa kelas X materi trigonometri antara model pembelajaran MMP, Pairs Check, dan Direct Instruction. Populasi penelitian ini adalah siswa kelas X SMA N 4 Magelang Tahun Pelajaran 2013/2014. Sampel penelitian diambil secara cluster random sampling. Metode pengumpulan data dilakukan dengan dokumentasi, tes untuk mengukur kemampuan pemecahan masalah, dan observasi. Hasil penelitian menunjukkan (1) kemampuan pemecahan masalah siswa yang mendapat model MMP dan Pairs Check mencapai ketuntasan belajar dan (2) terdapat perbedaan signifikan kemampuan pemecahan masalah antara siswa yang mendapat model MMP, Pairs Check, dan Direct Instruction. Kemampuan pemecahan masalah siswa model MMP dan Pairs Check tidak berbeda tetapi lebih baik dari Direct Instruction. Simpulan yang diperoleh (1) kemampuan pemecahan masalah siswa kelas X materi trigonometri dengan model pembelajaran MMP dan Pairs Check mencapai ketuntasan belajar dan (2) terdapat perbedaan signifikan kemampuan pemecahan masalah antara siswa kelas X materi trigonometri antara model pembelajaran MMP, Pairs Check, dan Direct Instruction. Kemampuan pemecahan masalah siswa dengan model pembelajaran MMP dan Pairs Check tidak berbeda tetapi lebih baik dari Direct Instruction.
KEEFEKTIFAN MODEL PEMBELAJARAN KOOPERATIF DENGAN STRATEGI TTW BERBANTUAN GEOGEBRA TERHADAP KEMAMPUAN BERPIKIR KREATIF MATEMATIS SISWA KELAS VII MATERI SEGITIGA
Authors: Atikasari Gias , Kurniasih Ary Woro
Published: August 2024

Tujuan penelitian ini untuk mengetahui keefektifan model pembelajaran kooperatif dengan strategi Think-Talk-Write berbantuan GeoGebra terhadap kemampuan berpikir kreatif matematis siswa kelas VII materi segitiga. Populasi dalam penelitian ini adalah siswa kelas VII MTs Negeri Kendal tahun pelajaran 2013/ 2014. Pemilihan sampel menggunakan metode cluster random sampling, diperoleh siswa kelas VII F sebagai kelas eksperimen dan kelas VII E sebagai kelas kontrol. Pada kelas eskperimen diterapkan model pembelajaran kooperatif dengan strategi Think-Talk-Write (TTW) berbantuan GeoGebra, sedangkan pada kelas kontrol diterapkan pembelajaran ekspositori. Pengambilan data dilakukan dengan metode dokumentasi untuk mendapatkan data nilai ulangan tengah semester genap tahun pelajaran 2013/ 2014 mata pelajaran matematika dan metode tes untuk mendapatkan data nilai berpikir kreatif siswa yang kemudian dianalisis dengan uji ketuntasan dan uji perbedaan rata-rata. Hasil penelitian adalah (1) kemampuan berpikir kreatif matematis siswa dengan penerapan model pembelajaran kooperatif dengan strategi TTW berbantuan GeoGebra dapat mencapai ketuntasan belajar; dan (2) rata-rata kemampuan berpikir kreatif matematis siswa dengan penerapan model pembelajaran kooperatif dengan strategi TTW berbantuan GeoGebra lebih baik daripada rata-rata kemampuan berpikir kreatif matematis siswa pada kelas kontrol. Dengan melihat hasil penelitian dapat disimpulkan bahwa model pembelajaran kooperatif dengan strategi TTW berbantuan GeoGebra terhadap kemampuan berpikir kreatif siswa kelas VII pada materi segitiga efektif. Disarankan agar model pembelajaran kooperatif dengan strategi TTW berbantuan GeoGebra dapat digunakan sebagai alternatif pembelajaran untuk menumbuhkembangkan kemampuan berpikir kreatif matematis siswa
Keefektifan Implementasi CTL berbantuan Komik Matematika dan Langkah Penyelesaian Krulik dan Rudnick untuk Meningkatkan Kemampuan Pemahaman dan Disposisi Matematis Siswa
Authors: Widayanti Christina , Dwidayati Nurkaromah , Hendikawati Putriaji
Published: August 2024

This study aims to know the effectiveness of the CTL models aided by mathematical comics and Krulik and Rudnickâ€™s steps in problem solving to improve the ability of studentâ€™s mathematical understanding and disposition. Population in this study were VIIIA grade students up to VIIIE of SMP Negeri 1 Pulokulon year 2015/2016 with a true experimental design types posttestÂ­only control design and samples are chosen randomly. Data analysis that used in this study were an average of completeness test, the proportion test, the average difference test, and MannÂ­Whitney test. The results showed that (1) the ability of studentâ€™s mathematical understanding of the subject that have gained CTL models aided by mathematical comics and Krulik and Rudnickâ€™s steps in problem solving have achieved the completeness in groups and classical; (2) the ability of studentâ€™s mathematical understanding of students who have gained CTL models aided by mathematical comics and Krulik and Rudnickâ€™s steps in problem solving more than students with expository models aided by LKS, (3) the mathematical disposition of studentâ€™s who have gained CTL models aided by mathematical comics and Krulik and Rudnickâ€™s steps in problem solving more than students with expository models aided by LKS.
Analysis of Mathematical Connection Ability and Mathematical Disposition Students of 11th Grade Vocational High School
Authors: Setiawan Fajar Tri , Suyitno Hardi , Susilo Bambang Eko
Published: August 2024

The purpose of this research was to described mathematical connection ability, mathematical disposition students of eleventh grade Vocational High School. This research also was to described mathematical connection ability reviewed by mathematical disposition and mathematical disposition reviewed by mathematical connection ability. The social situation was students of eleventh grade Eight Vocational High School. The subject in this research was students in the level of capacity to mathematical connection ability and mathematical disposition was three students in XI RPL 2 Eight State Vocational High School of Semarang. The result showed a description (1) mathematical connection ability level of students were medium; (2) mathematical disposition level of students were medium; (3) students had high mathematical connection ability level tendency to construct mathematical disposition level better than students had medium and low mathematical connection ability level; (4) students had high mathematical disposition level tendency to construct mathematical connection  ability level better than students had medium and low mathematical disposition level.
Project Based Learning Implementation to Improve Students' Problem Solving Ability and Honesty
Authors: Rahman Erik , Mashuri Mashuri , Hendikawati Putriaji
Published: August 2024

The purpose of this research is to know the learning completeness, problem solving ability improvement, and honesty improvement by using Project Based Learning. This research used quantitative method.The data were taken by using documentation, observation, and test. The result of the research were 1) the completeness percentage of problem solving ability of experimental class is more than 75%; 2) the problem solving ability of experimental class improved after using Project Based Learning method which was shown by: the higher average of posttest rather than the pretest, gain index showed the improvement of problem solving ability in moderate category, that was 0,66, and the average score ofproblem solving ability of experimental class  was higher than the control class; 3) the improvement of studentsâ€™ honesty character proved by: the higher average of postest of honesty character rather than the pretest, gain index showed improvement in honesty character that is 0,25 (low category), the average of honest character improvement of experimental is higher than the control class.
Mathematical Communication Ability by Grade VII Students Using a Themed Problem Based Learning with Scaffolding on Rectangle Materials
Authors: Saputro Didik Adi , Masrukan Masrukan , Agoestanto Arief
Published: August 2024

The aim of research to test students' mathematical communication used themed of PBL with scaffolding, themed of PBL and PBL achieve mastery learning;to test students' mathematical communication that used the themed of PBL with scaffolding, themed of PBL and PBL; and to test students' mathematical communication for the low, medium group, and a high-group themed of PBL with scaffolding, themed of PBL and PBL. This type of research is quantitative research. The Population is seventh grade students of SMPN 22 Semarang and the sample class VII E, F and VII VII G. Used normality test, homogenity test, equality test on average, the proportion of one-party test, one way anova test, and scheffe test. The results showed that (1) Studentâ€™s mathematical communication ability using themed of PBLwith Scaffolding strategy,themed of PBL, and PBL achieve the completeness of learning, (2) there is a difference in the classroom using the themed of PBL with scaffolding, themed of PBL, as well as PBL, (3) For the low, medium, high and there is a difference in the classroom using the themed of PBL with scaffolding, themed of PBL and PBL.
Design of Animated Subject Materials in Integral Calculus Course
Authors: Shodikin Ali , Novianti Anik
Published: August 2024

A pleasant learning environment is influenced by the teaching materials used. We arrange teaching materials in that can make learning more exciting and increase the learning interests of learners. Integral calculus is still one of the problem subjects for students and contains primary materials as a prerequisite for other courses. The design of the animated learning materials for the integral calculus course needs to be developed. The resulting product has different characteristics from other teaching materials, such as presentation design that emphasizes graphical animation, some material parts with simulation video, sample and practice questions. This teaching material is also equipped with a guidebook of its use. Animated teaching materials are expected to be an alternative solution in increasing students' interest and understanding in integral calculus courses.
Influence of TANDUR Learning to Students's Mathematical Representation and Student Self-Concept
Authors: Maulana Dimas Fajar , Rosita Cita Dwi
Published: August 2024

This study aims to determine the effect of learning model TANDUR on the ability of mathematical representation and selfconcept of students and to know the correlation between the ability of mathematical representation and selfconcept. This research is a quantitative research using an experimental method. The research design is True Experimental Design with PretestPosttest Control Group Design. The population in thisstudy is all students of class X which amounted to 350 students in one of the SMA Negeri in Cirebon city. From the population is taken the sample using simple random sampling technique as many as 60 students are divided into two groups namely groups who get TANDUR learning and groups that get conventional learning. The results showed that the TANDUR learning model had an effect of 66.9% on the selfconcept of the students, while the students' mathematical representation ability was 75.5%. Meanwhile, the correlation between selfconcept and student's mathematical representation is 74,3%.
Mathematical connection ability on creative problem solving with ethnomathematics nuance learning model
Authors: Yosopranata Desinta , Zaenuri Zaenuri , Mashuri Mashuri
Published: August 2024

The purpose of this research was to analyze the completeness of mathematical connection ability on Creative Problem Solving with ethnomathematics nuance learning model and its differences on Direct Instruction learning model and to analyze the influence of cultural love attitude toward mathematical connection ability. The materials in this research were rectangle, square, and trapezoid. The population in this research were students of grade VII A, VII B, and VII C at a junior high school in Wonosobo academic year 2017/2018 and selected with cluster random sampling. Particularly, grade VII A was chosen as the experimental class and taught by using Creative Problem Solving with ethnomathematics nuance learning model, while grade VII B as a control class that was taught by using Direct Instruction learning model. The data collection methods used were documentation, written test, and questionnaire. The research instrument used were written test and questionnaire. Then, the data were analyzed by one-sided proportion test, two-point equality test, equality test of two proportions, and regression analysis. Eventually, the results showed that (1) the mathematical connection ability of grade VII students with Creative Problem Solving with ethnomathematics nuance learning model reached the classical completeness; (2) the average of mathematical connection ability by using Creative Problem Solving with ethnomathematics nuance learning model of grade VII better than average of mathematical connection ability using Direct Instruction learning model; (3) the cultural love attitude affected to mathematical connection ability.
Mathematical representation ability of studentsâ€™ grade X in mathematics learning on problem based learning
Authors: Utami Palupi Retno , Junaedi Iwan , Hidayah Isti
Published: August 2024

The purposes of this study were to obtain a description of learning quality on problem based learning to improve the mathematical representation ability of students grade X and to get description about mathematical representation ability of students grade X in mathematics learning on problem based learning. this study used qualitative method. Qualitative methods is procedure of study that produce descriptive data in the words or oral from people and behaviour that can be observed. The study was conducted at SMA 1 Bumiayu with the subject of this study is the students of X MIPA 6. The subject of this study are students and teacher. The students that chosen as a subject of the study were selected as many as 6 person.they are 2 person from upper group, 2 person from medium group and 2 person from lower group. Based on the study thet has been done, the result shows that (1) the quality of mathematical learning on problem based learning in good category, (2) mathematical representation ability of students in each groups is different. Words representation ability and mathematical expressions ability shows a uniform pattern. On the visual representation ability shows diverse pattern.
Student's Problem-Solving Ability through the Realistic Mathematics Education with Fun Card
Authors: Windari Puput , Winarti Endang Retno
Published: August 2024

The purpose of this study is to test: (1) classical mastery of problem-solving abilities in Realistic Mathematics Education Learning assisted with fun cards, (2) whether problem-solving abilities in Realistic Mathematics Education Learning Approach is better than learning with PBL, (3) the influence of students' learning responsibility towards problem-solving skills with the Realistic Mathematics Education approach, and (4) describe students' problem-solving abilities in terms of learning responsibility.  This study uses a mixed method of sequential explanatory design, the population in this study was the seventh-grade students of one of Junior High School 36 Semarang the academic year of 2018/2019. The results showed that (1) students' problem-solving abilities through the Realistic Mathematics Education Learning Approach assisted with fun cards met classical learning completeness criteria, (2) problem-solving abilities of students who obtained Realistic Mathematics Education Learning assisted with fun cards are better than students who learn with Problem-Based Models Learning, (3) learning responsibilities have a positive effect on students' problem-solving skills in Realistic Mathematics Education Learning assisted with fun cards, (4) students' problem-solving abilities in terms of responsibility through the RME learning approach assisted with fun cards.
Qualitative analysis on mathematical literacy ability and student responsibility with realistic mathematics education learning models of ethnomathematics nuance
Authors: Kurniati Chrisvonela Neri , Mariani Scolastika
Published: August 2024

The purpose of this research is to know the ability of mathematical literacy and the responsibility of students with an ethnomathematics-style Realistic Mathematics Education learning model. This type of research is a qualitative research that is descriptive. To establish the validity of qualitative data then the inspection techniques used in this research using the triangulation of the source, that is to compare the suitability of data obtained from the results of interviews and tests. The study was conducted on one of the junior high schools in Semarang, and there are 6 research subjects representing each of the 2 students for the group of high responsibility categories, 2 students for the category of medium responsibility groups, and 2 students for the group of low liability categories. In this study it was found that there were students representing the responsibilities of being granted results from mathematical literacy skills tests with the same results as students representing high responsibility groups. The factors influencing the findings are the thoroughness of the students representing the group of responsibilities being in Corrected their work.
The influence of hydrostatic pressure on the synthesis of colloidal core-shell quantum dots with the mismatch of lattice parameters
Authors: Kuzyk Oleh , Dan'kiv Olesya , Stolyarchuk Ihor , Peleshchak Roman , Uhryn Yurii , Kuhivchak Vladyslav
Published: August 2024

The theory of the synthesis of colloidal quantum dots of the core-shell type with the mismatch of lattice parameters of the contacting materials which are subjected to additional external hydrostatic pressure has been developed. The proposed model takes into account the influence of hydrostatic pressure on the homogeneous nucleation of the shell material and its heteroepitaxial growth on the core surface. Within the framework of the developed model, the regularities of change in the homogeneous nucleation of colloidal ZnS nanoparticles, that is the material of the shell, and the heteroepitaxial growth of the ZnS shell on the CdSe core under the action of external pressure have been established. It was found that such hydrostatic pressure complicates the homogeneous formation of nanoparticles of the shell material (increases the critical radius, at exceeding which the growth of nanoparticles and the potential barrier for their nucleation are possible) and, on the contrary, practically does not change the conditions of heteroepitaxial growth of the shell on the core.
Removal of Cr (III) and Cr (VI) ions by adsorbent based on Titanium Dioxide
Authors: Mironyuk I. , Vasylyeva H. , Mykytyn I. , Zavilopulo A. , Vasyliev O.
Published: August 2024

In this paper, the adsorption of trivalent chromium cations by a sample of sodium-modified TiO2 was studied. XRF analysis of the TiO2 surface was performed.  The dependence of the adsorption value on the duration of the interaction in the system of the adsorbent–solution of chromium compound was investigated. The influence of the acidity of the solution and the equilibrium concentration of chromium ions on the adsorption value was also determined. It is shown that the adsorption kinetics of trivalent chromium ions is best described by the pseudo-second-order equation and the diffusion kinetic model. Freundlich's adsorption theory best describes equilibrium adsorption. Mass spectrometry proved the enhanced adsorption of trivalent chromium ions from a mixture with hexavalent chromium. This statement was evidenced by Raman spectroscopy of the surface of Na-TiO2. The maximum adsorption of Cr (III) ions is 62 mg/g. The separation factor of trivalent chromium and hexavalent chromium is 7.279
Experimental study of Hf-Cu-Sn ternary system at 870 K
Authors: Romaka L. , Romaka V.V. , Stadnyk Yu. , Horyn A.
Published: August 2024

Interaction of hafnium with copper and tin was studied at 870 K over the whole concentration range using X-ray diffractometry and scanning electron microscopy. At the temperature of investigation three ternary compounds are realized in the Hf-Cu-Sn system: HfCuSn (LiGaGe-type), HfCu5Sn2 (HfCu5Sn2-type), and Hf5CuSn3 (Hf5CuSn3-type). New HfCu5Sn2 ternary stannide crystallizes in the hexagonal space group P63/mmc with cell parameters a = 0.42959(7) nm, с = 1.54165(4) nm. Electrical transport properties indicated metallic type of conductivity of the all studied ternary compounds. The DFT calculations were used to evaluate chemical bonding, elastic and physical properties of the ternary phases.
“Fighting for Community”
Authors: Wright Christopher M. , Savado Catlyn , Chan Dora , Sasson Rommy , Vaught Sabina , Dancy II T. Elon
Published: August 2024

Centering a dialogue among young people who are movement builders, this article considers one example of freedom work: school walkouts. The authors narrate how mobilizing in Brooklyn and Chicago illustrates possibilities for futures beyond the euro-modern human project. Specifically, the article is a dialogic set of stories about organizing against the codification of adult superordination, with people across difference, and through collective praxes. We situate this movement building in the long tradition of Black radical work and share stories that shed new light on the locus of school-based counterinsurgent forces and young people’s self-determination. Young organizers incisively interrogate systems of power, delegitimizing these systems’ logics and practices, and move us radically beyond the current social organization by modeling sustained learning.
Interrupt, Prohibit, Resist
Authors: Ellis Amanda
Published: August 2024

This short nonfiction essay creatively details my journey as a faculty member who benefited from the support of a woman-of-color coalition, particularly in light of recent legislation (SB 17) against affinity groups and DEI work in Texas.
Resisting Arrest: Race and Pittsburghers’ Struggles against Police Power from the 1840s through the 1950s
Authors: Frantz Elaine
Published: August 2024

We often think about critiques of police violence against Black people as having begun in the 1960s and 1970s. This article explores the history of resistance to policing from Pittsburgh’s beginnings in the eighteenth century to the 1950s, proving a prehistory to this dominant narrative. As soon as the police emerged in late eighteenth-century Pittsburgh, the people they attempted to police pushed back against their actions. As they expanded their authority over the decades, this resistance expanded as well. People being policed tended to be the least powerful segment of the population, but sometimes their objections found their ways into newspapers and municipal and legal documents. This paper traces a continual tradition of protest to police violence and overreach, particularly by Black Pittsburghers and their occasional supporters. While it by no means solved the problem of police violence against Black Pittsburghers, this continuous struggle brought to light, sometimes reined in, and sometimes gained some redress for this endemic social problem.
Pittsburgh, the Realest City: Shit Talk’n’, Storytell’n’, Social Livin’
Authors: Sakho Jacqueline Roebuck
Published: August 2024

This article documents my lived experience as a participant observer in a writing/performance course that brought together returning citizens, police officers, community activists, university students, and faculty. I utilize Sharon Hoffman’s (2004) “Living Stories” framework and Quiana Cutts’s (2016) concept of ars spirituality, an expansion of poetic inquiry, as lenses to frame the discussion of my storytelling and storiography experience. Curated by Duquesne University sociologist Norman Conti, with theoretical justification from C. Wright Mills and Erving Goffman, the course was co-facilitated by award-winning actor/writer Roger Guenveur Smith and world-renowned writing coach and performer Susan Stein over the Zoom video conferencing platform during the 2021 spring semester. Altogether, the course functioned as a dialogic space where individuals could transcend social status in order to know each other—and perhaps even themselves—through their stories.