bluuebunny/crossref_metadata_2025 huggingface dataset:
On the Role of Enthalpic and Entropic Contributions on the Conformational Free Energy Landscape of MIL-101(Cr) Structural Building Units
Authors: Kollias Loukas , Cantu David , Glezakou Vassiliki-Alexandra , Rousseau Roger , Salvalaglio Matteo
Published: October 2019

The thermostructural behavior of metal-organic framework (MOF) precursors is responsible for regulating the introduction of MOF structure defects during synthesis. In this paper, we evaluate factors affecting the flexibility of MIL-101(Cr) half – secondary building units (half-SBUs) in solution using enhanced sampling methods. In particular, we calculate entropic and enthalpic contributions to the conformational free energy landscape of isolated MIL-101(Cr) half-SBUs, in water, in the presence and absence of ionic species (Na+ and F-), and in N, N-dimethylformamide (DMF). We find that the interplay between enthalpy and entropy determines the most probable conformational state for half-SBUs. Furthermore, we investigate the role of enthalpy and entropy in the conformational rearrangement of an SBU in water, noting that entropic contributions are essential to stabilize configurations that depart from those coherent with the MIL-101(Cr) crystal structure. Our analysis highlights the importance of explicitly considering entropic effects on the configurational ensembles of MOF building units, as such effects can significantly impact the relative stability of structurally different conformers, which ultimately can be responsible for the formation of defects during materials synthesis.
Effects of Sulfur Curing Systems on Mechanical Properties of NR-SBR Rubber Blends
Authors: Tang Ruogu
Published: October 2019

A series of NR/SBR vulcanizates were prepared by conventional vulcanization (CV), effective vulcanization (EV) and semi-effective vulcanization (SEV) respectively basing on each formulation and optimum curing time. We examined the mechanical properties of NR/SBR vulcanizates including tensile strength, tear strength, elongation at break, modulus, Shore A hardnessand and relative volume abrasion. The results indicated that NR/SBR vulcanizates prepared in different systems differed in mechanical properties. Vulcanizates prepared via CV showed higher tensile and tear strength; vulcanizates prepared via EV had high modulus and hardness, and vulcanizates prepared via SEV performed high abrasion resistance.
Kinetic Control over Droplet Ripening in Fuel-Driven Active Emulsions
Authors: Tena-Solsona Marta , Janssen Jacqueline , Wanzke Caren , Schnitter Fabian , Park Hansol , Rieß Benedikt , Gibbs Julianne M. , Weber Christoph A. , Boekhoven Job
Published: October 2019

Active droplets are made of phase-separated molecules that are activated and deactivated by a metabolic reaction cycle. Such droplets play a crucial role in biology as a class of membrane-less organelles. Moreover, theoretical studies show that active droplets can evolve to the same size or spontaneously self-divide when energy is abundant. All of these exciting properties, i.e., emergence, decay, collective behavior, and self-division, are pivotal to the functioning of life. However, these theoretical predictions lack experimental systems to test them quantitively. Here, we describe the synthesis of synthetic active droplets driven by a metabolic chemical cycle and we find a surprising new behavior, i.e., the dynamics of droplet-growth is regulated by the kinetics of the fuel-driven reaction cycle. Consequently, these droplets ripen orders of magnitude faster compared to Ostwald ripening. Combining experiments and theory, we elucidate the underlying mechanism, which could help better understand how cells regulate the growth of membrane-less organelles.
Eksplorasi Pemahaman Siswa pada Materi Perbandingan Senilai Menggunakan Konteks Cerita di SMP
Authors: Hamidah Dewi , Putri Ratu Ilma Indra , Somakim Somakim
Published: October 2019

Artikel ini berfokus pada eksplorasi pemahaman siswa dalam mengidentifikasi informasi atau hal-hal mengenai konsep perbandingan melalui cerita atau permasalahan serta untuk mengetahui sejauh mana siswa memaknai arti perbandingan senilai. Penelitian ini merupakan desain riset yang menggunakan pendekatan PMRI (Pendidikan Matematika Realistik Indonesia) dengan cerita sebagai konteks awal pembelajaran. Subjek penelitian ini adalah siswa kelas VII pada salah satu Sekolah Menengah Pertama di Palembang. Hasil penelitian menunjukkan bahwa penggunaan konteks cerita dapat membantu siswa mampu mengidentifikasi informasi atau hal-hal mengenai konsep perbandingan dan memahami arti perbandingan senilai. Penggunaaan cerita sebagai konteks awal pembelajaran dapat memberikan pengaruh yang positif pada pembelajaran matematika yang lebih menyenangkan, dan dapat meningkatkan pemahaman konsep matematika yang dipelajari.
Profil Pemecahan Masalah Kreatif Siswa MA Ditinjau dari Tingkat Math Self-efficacy
Authors: Widodo Kukuh , Budiarto Mega Teguh , Lukito Agung
Published: October 2019

Penelitian ini bertujuan mendeskripsikan profil pemecahan masalah kreatif siswa MA ditinjau dari tingkat math self-efficacy (MSE). Untuk mencapai tujuan peneliti menggunakan tahapan pemecahan masalah kreatif CPS Versi 6.1 yaitu membangun kesempatan, menggali data, membingkai masalah, membangkitkan ide, mengembangkan solusi, dan membangun penerimaan. Penelitian ini merupakan penelitian deskriptif dengan pendekatan kualitatif. Subjek penelitian terdiri dari 2 siswa yaitu siswa dengan MSE tinggi dan rendah berdasarkan hasil analisis angket the PISA math self-efficacy scale. Teknik pengumpulan data adalah wawancara berbasis tugas untuk mendapatkan data mengenai pemecahan masalah kreatif siswa. Hasil penelitian menunjukkan bahwa (1) subjek dengan MSE tinggi malakukan tahapan membangun kesempatan, menggali data, membingkai masalah, membangkitkan ide (melakukan kefasihan, melakukan fleksibilitas, namun tidak melakukan kebaruan),  mengembangkan solusi, dan membangun penerimaan; dan (2) subjek dengan MSE rendah melakukan tahapan membangun kesempatan, membingkai masalah, membangkitkan ide (melakukan kefasihan, melakukan fleksibilitas, namun tidak melakukan kebaruan), mengembangkan solusi, dan membangun penerimaan, namun tidak menggali data.
Pengembangan Penalaran Kuantitatif di Sekolah Dasar untuk Mengembangkan Berpikir Aljabar di Sekolah Menengah Pertama
Authors: Fu'adiah Dzikra
Published: October 2019

Penalaran kuantitatif merupakan suatu penalaran yang menekankan pada penarikan kesimpulan berdasarkan data-data atau informasi kuantitatif. Sedangkan berpikir aljabar dikembangkan untuk melihat dan mempresentasikan pola dan hubungan yang direpresentasikan dalam ekspresi-ekpresi aljabar.  Siswa belajar aljabar secara formal di kelas VII dan VIII. Pokok bahasan yang diberikan adalah bentuk aljabar dan sistem persamaan linier dua variabel. Kesulitan yang dialami oleh siswa adalah ketika menyelesaikan masalah kontekstual, terutama masalah yang kompleks. Sebagian besar siswa hanya menghafalkan algoritma atau metode dalam menyelesaikan masalah tanpa memahami dengan baik hubungan antara informasi-informasi yang diberikan dengan pertanyaan dalam masalah. Solusi dari masalah tersebut adalah menggunakan pendekatan pengembangan penalaran kuantitatif yang dimunculkan dalam proses pembelajaran matematika dari jenjang pendidikan dasar. Solusi tersebut dapat dilakukan karena terdapat hubungan timbal balik antara pengembangan jangka panjang kemampuan aljabar siswa dengan pengembangan jangka panjang penalaran kuantitatif siswa. Langkah selanjutnya adalah mengembangkan kegiatan pembelajaran matematika di SD yang berfokus pada mengembangkan penalaran kuantitatif siswa, karena penalaran kuantitatif dapat dikembangkan mulai dari seseorang berumur lima tahun, sehingga dapat dimulai dari siswa mengenal bilangan.
Perkembangan Berpikir Probabilistik Siswa Sekolah Dasar
Authors: Sari Dwi Ivayana , Budayasa I Ketut , Juniati Dwi
Published: October 2019

Berpikir probabilistik setiap orang berbeda, karena perbedaan budaya mengakibatkan perbedaan pengetahuan probabilistik, sedangkan pengetahun probabilistik mempengaruhi pemikiran probabilistik. Perbedaan berpikir probabilistik siswa berbeda-beda tergantung pada level berpikir probabilistik siswa. Di Indonesia pertumbuhan tingkat berpikir probabilistik siswa sekolah dasar sedikit mendapat perhatian oleh para peneliti. Hal ini karena materi probabilitas dikenalkan pertama kali di tingkat SMP kelas IX. Padahal mengembangkan berpikir probabilistik siswa di tingkat dasar sangat penting sebagai pondasi untuk mempelajari probabilitas di tingkat yang lebih tinggi. Oleh sebab itu, penelitian ini bertujuan untuk mengeksplorasi pertumbuhan tingkat berpikir probabilistik siswa sekolah dasar dalam menyelesaikan tugas probabilitas standar dan tugas probabilitas eksperimen. Penelitian ini merupakan penelitian deskriptif eksploratif dengan pendekatan kualitatif. Subjek penelitian ini adalah siswa leki-laki berkemampuan tinggi dan rendah. Hasil penelitian menunjukkan bahwa Level berpikir probabilistik siswa sekolah dasar mengalami pertumbuhan setelah diberi tugas probabilitas eksperimen, terutama pada tugas ruang sampel dan probabilitas suatu kejadian. Hal ini karena eksperimen memberikan pengalaman langsung kepada siswa untuk memanipulasi bendabenda yang disediakan dalam menyelesaikan tugas probabilitas. Namun, pada tugas perbandingan probabilitas level berpikir probabilistik siswa tidak mengalami perubahan. Hasil penelitian ini dapat menjadi masukan bagi guru untuk mengajarkan probabilitas di tingkat sekolah dasar dengan memberikan tugas perbandingan probabilitas sebagai langkah awal untuk menggali berpikir probabilistik siswa, terutama pada jenis tugas pemutaran spinner.
Keterampilan Berpikir Kreatif Mahasiswa Calon Guru Matematika dalam Pemecahan Masalah Kontekstual
Authors: Santia Ika
Published: October 2019

Abstrak.Keterampilan berpikir kreatif sangat penting dimiliki calon guru matematika dalam menghadapi kompetisi era global karena tingkat kompleksitas masalah yang semakin meningkat. Oleh karena melihat pentingnya keterampilan berpikir kreatif mahasiswa calon guru matematika, maka penelitian ini bertujuan:1) Mendeskripsikan bagaimana keterampilan berpikir kreatif mahasiswa calon guru matematika; 2) Menganalisis proses pemecahan masalah kontekstual oleh mahasiswa calon guru matematika yang didasarkan keterampilan berpikir kreatif. Penelitian ini adalah penelitian kualitatif bersifat eksploratif yang dilaksanakan dalam kelas MKPBM IV di UN PGRI Kediri pada bulan Januari 2016 menggunakan metode tes dan wawancara. Selanjutnya untuk menguji kredibilitas data dilakukan triangulasi waktu. Hasil penelitian menunjukkan bahwa:1) Terdapat 5 mahasiswa dari 36 mahasiswa yang memenuhi 4 indikator berpikir kreatif, yaitu kelancaran (fluency), fleksibilitas (flexibility), elaborasi(elaboration) dan keaslian (originality). Dari kelima mahasiswa tersebut terdapat 2 mahasiswa yang memiliki fluency tertinggi(SCT), 1 mahasiswa memiliki flexibility tertinggi (SFT), 1 mahasiswa memiliki originality tertinggi (SOT) dan 1 mahasiswa memiliki elaborasi tertinggi (SET); 2) Dalam pemecahan masalah kontekstual, SCT dan SFT menggunakan cara eliminasi-substitusi model matematika dan termasuk dalam TKBK3, SET menggunakan representasi skematik dan cara trial-error, sedangkan SOT menggunakan representasi figural. SET dan SOT termasuk dalam TKBK 4. Abstract.Skill of think creatively is very important owned by mathematics preservice teacher to thrive in global era competition because complexities of problem is progressively expanded. Based of the important of creatively skill used mathematics preservice teacher in learns mathematics, hence this research’s aimed to: 1) Describe how mathematics preservice teacher’s creativity skill of when learning mathematics 2) Analize process solving contextual problem by mathematics preservice teacher based their mathematics creativety skill. This is qualitative research because have explorative character which these research placed in class of MKPBM IV UN PGRI Kediri on January 2016 with written test method and interview method. To ensure the validity of data, this research used time triangulation. Result of research showed: 1) There are 5 student from 36 student fulfilling 4 indicator of creatively thingking
Analisis Strategi Mahasiswa dalam Menentukan Turunan Fungsi dengan Metode Diferensiasi Logaritmik
Authors: Sari Puspita
Published: October 2019

Kalkulus merupakan salah satu cabang matematika yang berperan penting dalam bidang ilmu lainnya. Konsep dasar kalkulus yang terdiri dari limit, turunan, dan integral merupakan konsep yang saling berkaitan satu sama lain. Terlebih lagi, penguasaan strategi dalam menentukan turunan dan integral suatu fungsi merupakan fondasi bagi ilmu matematika yang lebih lanjut. Penelitian ini bertujuan untuk mengeksplorasi dan menganalisa metode diferensiasi logaritmik yang digunakan oleh mahasiswa dalam menyelesaikan turunan fungsi tertentu. Data diperoleh dari hasil analisis dokumen, wawancara, serta observasi mengenai proses berpikir mahasiswa, kesulitan yang dihadapi, serta alasan penggunaan metode diferensiasi logaritmik dalam menentukan turunan fungsi. Hasil analisa menunjukkan bahwa mahasiswa cenderung menggunakan metode diferensiasi logaritmik jika menemui jenis fungsi rasional yang melibatkan pangkat pecahan pada setiap faktornya, maupun jika terdapat dua atau lebih faktor di pembilang dan penyebutnya, demikian pula pada jenis fungsi perkalian yang memiliki lebih dari dua faktor. Berdasarkan hasil analisa, metode diferensiasi logaritmik ini selain dapat digunakan untuk mempermudah penyelesaian turunan, juga untuk dapat menghindari kesalahan dalam menggunakan aturan rantai pada jenis fungsi tertentu.
Identifikasi Kemampuan Berpikir Kritis Siswa Kelas VIII Menggunakan Soal Pemecahan Masalah
Authors: Lestari Fuji , Putri Agustiany Dumeva , Wardani Ambarsari Kusuma
Published: October 2019

Penelitian ini bertujuan untuk mengetahui kemampuan berpikir kritis siswa kelas VIII dalam menyelesaikan soal pemecahan masalah. Penelitian ini merupakan jenis penelitian deskriptif dengan pendekatan kualitatif. Data yang dikumpulkan melalui tes dan non tes. Data non tes terdiri dari wawancara dan dokumentasi yang bertujuan untuk mendapatkan konfirmasi jawaban siswa pada soal tes yang diberikan. Sumber utama data pada penelitian ini yaitu seluruh siswa kelas VIII di SMP IT Bina Ilmi Palembang. Sebanyak dua puluh enam siswa dari kelas VIII.B terlibat dalam penelitian ini. Hasil dari penelitian ini menunjukkan bahwa siswa kelas VIII.B tidak dapat memenuhi semua indikator kemampuan berpikir kritis dengan baik sehingga dapat disimpulkan bahwa kemampuan berpikir kritis siswa kelas VIII.B masih rendah.
The Development Of Mathematics Handout Based On Local Wisdom Nuanced For Secondary Students
Authors: Putri Hani Rizkia , Ekawati Rooselyna
Published: October 2019

This study aims to develop a mathematics handout based on local wisdom nuanced to increase the mathematical problem-solving skill of the Secondary students. This research is motivated by the student’s ability to solve the social arithmetic problem. This study used four phases of developmental research such as Investigation, Design, Realization, and Test, Evaluation, and Revision. The characteristics of local wisdom were acquired within the design or context in the mathematics handout to develop secondary students problem-solving skills. The results show that the students do the stages of problem-solving by Polya, get the maximum score and show students’ positive responses in the questionnaire given. Therefore, it met the proper handout criteria such as valid, practice, and effective. In the future studies, we encouraged to develop learning materials which have a guide to do phases of problem-solving and apply the way to solve some problems in mathematics.
Designing a Management Information System Prototype for a Philanthropic Organization: a Case Study of YAAB Orbit Yogya
Authors: Kusumaningrum Sita Dewi , Setiaji Hari , Maulana Wildan
Published: October 2019

Modern philanthropic organizations are responsible for the use of social resources. However, some of them are facing several managerial issues, including inadequate database management and lack of accountability. To support the documenting process and to improve the management of funds, these organizations need a computer-based information management. This qualitative action research using prototyping method aimed at designing a management information system for a philanthropic organization which focus on providing education access for disadvantaged students in Yogyakarta. The process of designing management information system in the case study was applying a prototyping method since not every organization including a philanthropic organization could explicitly define the information needed to support their business process. This prototype was designed based on organization’s requirements so that users can obtain any information needed easily. The management information system prototype could provide assistance for a philanthropic organization in managing and documenting all activities in the organization.
The washback of listening tests for entrance exams on EFL instruction in Taiwanese junior high schools
Authors: Teng Huei-Chun , Fu Chun-Wei
Published: October 2019

The study aims to explore the washback of incorporating English listening test in the senior high entrance exam (Comprehensive Assessment Program: CAP) on EFL instruction in junior high schools in Taiwan. The participants were thirty English teachers and 298 students from three junior high schools in Taiwan. The instruments consisted of questionnaires and interview guide. The questionnaires were conducted to investigate the participants’ perceptions of the influence of CAP English listening test on EFL teachers’ instructions, students’ learning activities and test preparation. A semi-structured interview was also adopted to probe specific information of participants’ perceptions of the CAP listening test, their needs and suggestions. Results showed that teachers and students had positive perceptions of the incorporation of CAP listening assessment. Moreover, the CAP reform generated positive washback effects to the instructors. Most of them were willing to change their teaching approaches, arrange some teaching activities, and provide diverse learning materials as long as class time allows. In addition, the results showed that students’ English learning motivation increased due to the CAP listening test. It is also indicated that students’ stress and test anxiety for senior high entrance exam may increase. As for the suggestions, both teachers and students indicated that they cared about the time for practicing listening and speaking, listening assessment of different English accents, and better audio equipment. Moreover, because the inequality of educational resources and bimodal distribution of students’ EFL proficiency still exist in Taiwan, most of the participants considered that the difficulty level and score weighting of the CAP listening test should not be increased. Implications for enhancing EFL listening instruction in junior high schools were further proposed.
Alleviating an Acid Sulfate Soil Cultivated to Rice (Oryza sativa) Using Ground Magnesium Limestone and Organic Fertilizer
Authors: Suswanto Totok , Shamshuddin J , Omar S.R Syed , Mat Peli , Teh C.B.S
Published: October 2019

Rice yield on acid sulfate soils in Malaysia is very low, presumably due to AI and/or Fe toxicity. This study wasconducted to ameliorate an acid sulfate soil in the Kemasin-Semerak Integrated Agricultural Development Project, located in Kelantan, Peninsular Malaysia, for rice cultivation. Rice variety, MR 219, was used as the test crop. Treatment included the use of various rates of ground magnesium limestone (GML), with or without an organic fertilizer. This acid sulfate soil had an initial pH of < 3.5 at depth below 45 cm. Exchangeable AI in the soil was high, especially in the subsoil. The first crop of rice was disturbed by floods. The result for the 2"d crop showed a promising trend; applying 4 t GMUha in combination with an organicfertilizer, the topsoil pH had increasedfrom 3.95 to 4.21, increasing the exchangeable Ca and Mgfrom 1.58 and 0.48 cmol/kg soil to 2.57 and O. 79 cmol/kg soil, respectively. In this treatment, the rice yield was 7.5 tlha, which was much higher than that produced by farmer's practice of about 2 tlha. The increase in yield was due to the combined effects of increasing pH and exchangeable Ca and Mg and of lowering AI and Fe concentration in the soil solution.
Phosphorus and Potassium Status in Paddy Soils (Sawah) of Central Lampung Regency
Authors: Barus Junita
Published: October 2019

The knowledge about the nutrient status in the lowland soils is one of several ways to maintain soil fertility and increasefarmers income. The objective of this study was to evaluate the status of P20J and K20 content in paddy soils (sawah) at Central lampung regency during the year 2001/2002. Composite soil samples were collected in each different soil types based on mapping technical survey of I : 50.000 scale. Composite soil samples consisting of 5 - 10 sub samples were taken from top layer (0 - 20 em) depth. Soil sampling was taken by using grid system, that is I cm2 in the map represented 25 ha in the field p]OJ and K~ potential content determined by HCI 25 %. Data were arranged in a descriptive methode and then classified in to three degrees (high, medium and low). High P was> 40 mg P20s/100 g, medium P was 20;.40 mg P201100 g and law P was < 20 mg P;Os/100 g. High K was > 20 mg K20/100 g, medium K was 10 -20 mg K20 /100 g and low K « 10 mg K~/IOOg). The results shawed that soil p;OJ status in paddy soils (sawah) of Centra Lampung regency were 61,65 % high, 35,84 % medium and 2,65 % low while K20 status were 6,64% high, 16,02 % medium and 77,34% low.
Impact of Fire on Natural Regeneration in Peat
Authors: Saharjo Bambang Hero , Nurhayati Ati Dwi
Published: October 2019

Fire is one of the most effective tools in disappearing vegetation community, where it was depend on the characteristics of burning itself and also the performance of the site being burnt. Previous research in mineral soils showed that repeated burning occurred at the same place trend to clean the vegetation which finally leads to have the land with lower number and quality of species left, while in peat land it was not fully understood. The research objective is to understand the vegetation dynamics following peat fires in the fibric peat type at the land preparation area using fire belong to the local community located in the Pelalawan district, Riau province, Indonesia during the dry season in the year 2001. Before slashing and drying, /0 tree species and 4 species of under storey vegetationfound. The site was dominated by Uncaria glabrata at seedling stage, Garcinia rostrata at sapling stage, Shorea macrophylla at pole stage and Pandanus immersus at understorey. After slashing and followed by 4 weeks drying then continued by burning with high flame temperature range from 8750(; to 900°C, it had been found that 3-months follOWing burning the site was dominated by Garcinia-rostrata at seedling stage and Cyperus halpan at understorey, while 6-months following burning the site was dominated by Eugenia jambos at seedling stage and Cyperus hal pan at understorey. Three months following burning species left to be only 4 species with 115 individuaVha (3 species from original and 1 new species emerge), and at 6 months following burning still 4 species left with 250 individuaVha.Meanwhile in understorey vegetation, 3 months following burning the species increased to be 7 species with 746 individuaVha (3 species left unchanged, I species disappeared and 4 new species emerge) and 6 months following burning the species left still 7 species with 1235 individuaVha. This means thatfire stimulate the increasing number of under storey vegetation.
Farmer Innovations Improving the System of Rice Intensification (SRI)
Authors: Uphoff Norman
Published: October 2019

The System of Rice Intensification (SRI), assembled in Madagascar over a 20-year period and gaining applicationinternationally since 2000, enables farmers to raise their irrigated rice production substantially just by making changes in theway they manage their plants, soil, water and nutrients, rather than by increasing inputs such as fertilizer, water oragrochemicals. Getting more output with less cost enhances profitability. This result is quite unprecedented, as discussed inpaper accompanying this one. SRI is not considered by its proponents as a technology; and by not presenting it to farmers asa set technology, this opens SRI up to many adaptations and innovations by farmer-users, who often but not always arecollaborating with NGO or government staff in a collaborative manner. This paper reports on a number of the innovations thathave been made in SRI practices, demonstrating bothfarmer capabilities and the advantages of engagingfarmers as partnersin an ongoing process of participatory development. The companion paper which considers SRI as a system for innovationoffers a more 'macro' view of SRI spread that complements this more 'micro' perspective.
Educative Supports for High School Geometry Instruction: An Examination of, and Suggestions for Teachers’ Guides
Authors:   The Korea Society Of Educational Studies In Mathematics, Suh Heejoo , Lee Seon Young , Han Sunyoung
Published: October 2019

Korean mathematics curriculum has undergone multiple cycles of reforms. Recent reforms emphasize teachers' role as who enact the written curriculum to their students. Teachers' guide is one of the resources that support teachers with enacting a given curriculum. Therefore, the potential teachers' guide has as a space for teacher professional development is worth an in-depth examination. To this end, this study explored the potential of Korean mathematics teachers' guides as educative curriculum materials. Nine guides for first year high school students were examined based on the coding scheme derived from literature. In addition, qualitative approach was applied to identify exemplary cases that contribute to increasing educativeness of teachers' guides. The examination revealed that the guides support assessment the most while providing limited guides for classroom instruction. The study provides various examples from the nine guides to enhance the quality of teachers' guides. The study ends with suggestions for teacher educators, curriculum writers, and researchers.
Two Middle School Students’ Understanding of ‘Constant Rate of Change’ and ‘Constant Rate of Change of Rate of Change’
Authors:   The Korea Society Of Educational Studies In Mathematics, Ma Minyoung , Lim Dongkyu
Published: October 2019

The purpose of this case study is to analyze students’ understanding of ‘constant rate of change’ and ‘constant rate of change of rate of change’ in a functional situation. Two students participated in a class six times (April to June, 2018). Neither student had ever learned linear functions at school. Analysis of the class revealed marked differences between student A and student B in graphically expressing and interpreting situations involving varying rates of change. This study focuses on their actions to express and to interpret analyzed the two students’ meaning of ‘constant rate of change’ and ‘constant rate of change of rate of change’. These results indicate the importance of understanding ‘constant rate of change' when learning graphs and functions.
A Comparative Analysis of the Mathematics Curriculum in Korea and New Zealand
Authors:   The Korea Society Of Educational Studies In Mathematics, Kim Seong-kyeong
Published: October 2019

The purpose of this study is to analyze the New Zealand Mathematics curriculum and to draw implications for the improvement of the curriculum. To this end, the New Zealand curriculum's document system, mathematics goals, the composition of curriculum and area, key competencies, achievement objects, teaching and learning and evaluation were compared with Korea's 2015 revised mathematics curriculum. As a result, New Zealand curriculum emphasizes statistics across mathematics goals, domain composition and achievement objects. Second, New Zealand supports a wide range of resources to help five key competencies be developed through mathematics curriculum. Third, looking at the achievement objects of the New Zealand curriculum, there is a strong tendency to deepen a single mathematics content at multiple levels. Fourth, New Zealand offers a broad curriculum, but national standards provide specific guidance on the level students should reach at the end of the school year. Finally, New Zealand not only provides the national curriculum in writing, but also implements it as a web-based material to improve the utilization and understanding of the curriculum.
A importância da utilização ferramentas do moodle na educação a distância
Authors: Souza Ana Paula Lopes de
Published: October 2019

Esta pesquisa é de natureza qualitativa, onde aborda alguns levantamentos bibliográficos e documentais sobre teóricos e discussões referente a temática. Buscou-se destacar a importância da utilização das ferramentas Moodle na Educação a Distância, além de analisar as potencialidades das referidas ferramentas na construção da aprendizagem nos Ambientes Virtuais de Aprendizagem (AVA). Os resultados obtidos basearam-se nas seguintes categorias de análise: contribuições da Educação a Distância (EAD) e as potencialidades das ferramentas do Moodle na aprendizagem. Conclui-se que as ferramentas virtuais disponibilizadas nos AVA garantem auxilio e interatividade ao ensino e potencializam a aprendizagem na EAD quando utilizadas de forma adequada.
A avaliação na EaD: linguagem, texto e discurso Alguns parâmetros para os cursos EaD da SEED/PR
Authors: Shibata Ricardo Hiroyuki
Published: October 2019

O artigo propõe examinar alguns parâmetros para a avaliação a serem utilizados nos cursos na modalidade EaD, a partir de aspetos linguísticos e discursivos, a saber: temática, coerência, coesão e modalidade. São matrizes relevantes, pois implicam pensar o letramento e a dinâmica da interação como competências/habilidades a serem desenvolvidas pelos profissionais da educação. Nesse sentido, é possível repensar todo o processo de expansão da EaD no contexto da SEED/PR (Secretaria da Educação do Paraná), conforme características de melhor qualificação pedagógica e institucional.
Contribuições do Google docs para suporte à iniciação científica no contexto do estágio supervisionado em cursos a distância
Authors: Silva Ivanderson Pereira da , Mercado Luis Paulo Leopoldo
Published: October 2019

Esse estudo investiga o limites e as possibilidades de uso do google docs para suporte a orientação dos trabalhos de pesquisa desenvolvidos por estagiários a partir das questões identificadas nas observações em campo de estágio. Num primeiro momento foram exploradas as potencialidades didáticas do google docs; em seguida realizado o acompanhamento e orientação dos trabalhos de pesquisa decorrentes do estágio supervisionado por meio do google docs; em continuidade foram realizados grupos focais com os estagiários com o objetivo de evidenciar as contribuições do google docs para suporte a iniciação científica. Como resultados foi possível evidenciar que essa experiência favoreceu aos estagiários o estímulo a autonomia intelectual, o encadeamento de processos de negociação, o encurtamento das distâncias nas relações sociais entre esses sujeitos e o seu reconhecimento como autores.
Trabalho em EAD sob a percepção de docentes de um curso de especialização da UTFPR
Authors: Dalfovo Aline Fornari , Araújo Everton Coimbra de , Almeida Shiderlene Vieira de , Cargnin Claudete
Published: October 2019

O presente artigo é fruto da conclusão de um curso de especialização e tem como objeto de estudo os avanços e desafios na percepção dos docentes que lecionam na Educação a Distância. O objetivo é identificar os pontos positivos e negativos de um sistema de avaliação e educação, conforme a visão de um determinado grupo de docentes, que utilizam o ambiente MOODLE. A partir de uma pesquisa quantitativa e qualitativa por meio de um questionário, realizou-se uma análise das vantagens e desafios encontrados. Os resultados apontam a importância da percepção dos docentes em relação à melhoria na qualidade de ensino, pelo fato de identificarem os problemas e os pontos positivos na aprendizagem dos alunos na modalidade de Educação a Distância.
Aprendizagem móvel e interculturalidade: produção científica em cursos de pós-graduação da Universidade Aberta de Lisboa
Authors: Santos Maria Ligia Rangel , Ramos Maria Natália Pereira
Published: October 2019

O estado da arte das práticas de educação a distância e e-learning tem sido questionado em diversos países, ao considerar o descompasso entre a velocidade da emergência das novas tecnologias e o ritmo de sua incorporação nas atividades educativas e de gestão acadêmica nas instituições de ensino, bem como a sua qualidade e impacto sobre a aprendizagem, em todo o mundo. Várias publicações têm surgido, buscando delinear e problematizar teorias e métodos que fundamentam as práticas pedagógicas, as escolhas tecnológicas, os processos de ensino-aprendizagem, a qualidade e impacto. Este trabalho trata das principais contribuições da Universidade de Lisboa (UAb-Pt) ao conhecimento da aprendizagem móvel em contexto intercultural, através do estudo da produção científica em nível de pós-graduação realizada nesta universidade, delineando-se os principais objetos, teorias, métodos e conclusões da pesquisa nessa temática. A relevância de um estudo que focalize a produção desta instituição, pioneira em educação a distância em Portugal, é evidenciada pelas características das sociedades no mundo globalizado em constante movimento, tornando o contato e convivência, mediados pelas tecnologias, entre os povos e culturas uma marca nunca vista em outros tempos da história de humanidade. Aprender é ao mesmo tempo necessidade e consequência desse modo de estar no mundo. Palavras-chave: Aprendizagem móvel. Interculturalidade. Produção científica.
A tecnologia nas práticas pedagógicas do ensino superior: o software Graphmatica no ensino de cálculo
Authors: Souza Antônio Aparecido Alves de , Giongo Ieda Maria
Published: October 2019

As discussões em torno da incorporação de novas tecnologias na educação matemática vêm possibilitando aos educadores refletirem sobre a criação de inovadas metodologias para a melhoria dos processos de ensino-aprendizagem, em todos os níveis de ensino. Assim, este artigo objetiva problematizar, as possibilidades e limitações da inserção do software Graphmatica em turmas de Cálculo para Cursos de Engenharia, em especial no que concerne ao conteúdo funções. A pesquisa foi desenvolvida em uma Instituição de Ensino Superior particular, sob a abordagem qualitativa. A análise dos dados permitiu visualizar que antes do uso do software, os estudantes utilizavam tempo excessivo na construção de gráficos em detrimento da análise matemática e eles passaram a questionar aspectos relevantes à aplicabilidade do software em situações problemas. Estes resultados possibilitaram ao professor pesquisador rever sua prática pedagógica. Conclui-se que as tecnologias não são a solução para todos os problemas, ela, sozinha, não destruirá os males da educação matemática e salvará os professores e alunos do perigo de ensinar e aprender.
Apresentação do dossiê Educação e pesquisa online
Authors: Lucena Simone
Published: October 2019

Este dossiê apresenta algumas reflexões sobre as transformações que o desenvolvimento das tecnologias da informação e comunicação (TIC) trouxe para a sociedade contemporânea em diferentes áreas do conhecimento entre elas a educação. Estas transformações, iniciadas desde a última década do século XX, ganharam maior amplitude no atual século XXI principalmente a partir da utilização das tecnologias móveis que operam por meio de conexões com redes do tipo wi-fi, 3G ou 4G. Para continuar lendo acesse o pdf
A formação continuada de professores da educação infantil no município de Ouvidor (GO)
Authors: Silva Altina Abadia da , Martin Avelina Oliveira de Sousa , Goveia Eliane Gomes de , Silveira Mikaelli Carín Tavares
Published: October 2019

Resumo: Este artigo originou-se de uma pesquisa cujo objetivo foi analisar a formação continuada de professores da Educação Infantil do Município de Ouvidor (GO) procurando entender como são constituídos os espaços formativos desses professores e quais os impactos dessa formação, na sua prática pedagógica. O Referencial Teórico adotado é a Psicologia Histórico-Cultural, com ênfase no conceito vygotskyano de mediação por ser ele central na teoria de Vygotsky e por entendermos a mediação pedagógica como condição maior do trabalho docente. Essa opção está relacionada também com o fato de trabalharmos com a formação inicial de professores e por desenvolvermos projetos de extensão com docentes deste município. Através de observações realizadas nos encontros de planejamento de professores da pré-escola, nas reuniões coletivas quinzenais realizadas pela secretaria de educação e pelas entrevistas com um grupo de professores e gestores realizamos a investigação de como ocorriam, até o ano de 2015 a formação continuada dos professores da Educação Infantil. Encontramos indicativos da ineficiência da formação continuada recebida, por se pautar na racionalidade técnica e na imitação de um professor modelo que transmitia a seus pares, atividades e concepções de acordo com sua interpretação e compreensão, impossibilitando que os professores refletissem de maneira crítica e autônoma sua prática pedagógica.Palavras-chave:  Educação infantil. Formação de professores. Processos formativos.
Práticas Educativas Interdisciplinares: desenvolvimento dos saberes e fazeres para a formação de professores do Pibid Interdisciplinar
Authors: Sadoyama Adriana dos Santos Prado , Andrade Leonardo Santos , Castro Paulo Alexandre de , Rosalem Vagner , Sadoyama Geraldo
Published: October 2019

Resumo: As práticas educativas interdisciplinares para o desenvolvimento dos saberes e fazeres à professores Supervisores do Programa Institucional de Bolsas de Iniciação à Docência (Pibid), especificamente do subprojeto Interdisciplinar da Universidade Federal de Goiás-Regional de Catalão/ BRASIL, tem sido um grande desafio. Este nos levou à pergunta problematizadora desta pesquisa a qual: como este professor com domínio de campos disciplinares específicos tratará da formação dos Pibidianos de várias áreas do conhecimento de forma integradora?  A análise das respostas dos docentes correlacionando saberes e fazeres docentes nas áreas de conhecimento proposto pelo subprojeto é o escopo principal deste artigo. A metodologia se baseou em uma análise de conteúdo dos dados levantados a partir da aplicação do questionário. Os resultados apontam que os docentes entendem a integralização pela proposta interdisciplinar e se sentem, mesmo apontando dificuldades no desenvolvimento de práticas educativas, parte do processo e desenvolvimento de saberes e fazeres docentes na perspectiva interdisciplinar.Palavras-chave:  Formação de professores. Pibid. Saberes e fazeres docentes interdisciplinares.
Mapping Improvement of Community Empowerment in the village of Development
Authors: Sukaris Sukaris , Pristyadi Budiyono , Alkusani Alkusani
Published: October 2019

Community empowerment is Carried out in order to reduce poverty and unemployment, the which in turnwill lead to an increase of in community welfare. However, the data-based empowerment programs have not been done much. So we need the first step in the success of community empowerment, it must start with understanding the community and its dynamics. The understanding needed is an understanding of the social and institutional arrangements of the community and an assessment is needed to design a good community development programs, and in accordance with the needs of the community so that the program can Achieve the right targets. The purpose of this coding program is to analyze the characteristics, potentials and problems of the village, analyze alternative empowerment programs for the targeted village communities and analyze and implement alternative programs for community empowerment activities. The approach used in resolving Reviews These services priority is the socialmapping survey methods and the participatory rural appraisal (PRA) method, with the target of being Sambipondok Village communities and Manyar Sidorukun Village. The results show that both villages have dimension index in the lagging characteristics and developing indexes. The potentials of the two villages are Generally different, such as the potential for tourism villages and Also the potential for. with the target of being Sambipondok Village communities and Manyar Sidorukun Village. The results show that both villages have dimension index in the lagging characteristics and developing indexes. The potentials of the two villages are Generally different, such as the potential for tourism villages and Also the potential for. with the target of being Sambipondok Village communities and Manyar Sidorukun Village. The results show that both villages have dimension index in the lagging characteristics and developing indexes. The potentials of the two villages are Generally different, such as the potential for tourism villages and Also the potential for.
Variabilidade das perdas de solo em Neossolo Quartzarênico sob diferentes coberturas no ecótono Cerrado-Amazônia
Authors: Alencar Nayara Martins , Santos Antonio Clementino dos , Paula Neto Joaquim José De , Rodrigues Marcos Odilon Dias , Oliveira Leonardo Bernardes Taverny de
Published: October 2019

A perda de solo por agentes erosivos é um dos maiores problemas da agricultura mundial, sobretudo em solos de textura arenosa, como os Neossolos. Dessa forma, objetivou-se avaliar a variabilidade da erosão em Neossolo Quartzarênico dos atributos físicos em duas áreas, sendo uma de mata secundária e outra de pastagem. Foram realizadas as amostragens de solo e o georreferenciamento nas duas áreas, com 45 pontos cada, em malha regular de 25x25 metros. Foram realizadas análises de matéria orgânica, areia grossa, areia fina, silte e argila, para estimativa das perdas e erodibilidade do solo. Através das estimativas pela equação universal da perda de solo, foi possível visualizar por meio da geoestatística a distribuição espacial dos atributos físicos que determinam os processos de erosão. As áreas ocupadas por pastagens apresentaram maior variabilidade sobre os fatores que determinam a perda de solo, como areia grossa e areia fina que constituem a maior parte dos componentes do solo. Como foi evidenciado pelos resultados das tabelas e dos mapas de isolinhas, fica claro que a substituição da área de mata nativa pela de pastagens cultivada, não aumentou a variabilidade aleatória dos atributos, com exceção para a variável areia total, e ocorreu aumento na variabilidade espacial apenas para as perdas de solo.
Soluble solids monitored in the clusters in minitomato hybrids from dwarf lines
Authors: Finzi Rafael Resende , Marquez Guilherme Repeza , Maciel Gabriel Mascarenhas , Momesso Maurício Pivetta , Pereira Lucas Medeiros , Silveira Aline José Da
Published: October 2019

On minitomatoes, the soluble solids content (SSC) is a fundamental characteristic for commercialization. Therefore, is essential to evaluate the genetic diversity among the genotypes, looking their SSC and also the SSC variation, related to the position of the cluster, mainly due to the new technologies – tomato hybrids obtained from dwarf lines. In this sense, the objective of the experiment was to evaluate the genetic variability and the influence of the cluster’s position on the SSC, in minitomato genotypes that were obtained from dwarf lines. The experiment were conducted on a greenhouse and set up in a completely randomized design, with subdivided portion of 13 hybrids x 5 cluster’s position and four replications. The SSC of the fruits were evaluated according with their position of the clusters, being the values expressed in 0Brix. The genetic diversity was obtained by multivariate analyzes, using the generalized distance of Mahalanobis, utilizing different grouping methods (UPGMA and Tocher). The hybrids performance for SSC was checked by the Scott-Knott test (p=0.005). The cluster’s position influenced on the SSC of the minitomatoes fruits and the first cluster of all hybrids that were evaluated, presented the highest SSC. Besides that, the highest 0Brix variability among the genotypes occurred when the fruits were harvested on the fifth and first cluster. Most hybrids originated from dwarf lines did not presented a reduce on 0Brix values during the harvests.
PENINGKATKAN KEMAMPUAN BERHITUNG SISWA KELAS III SD MELALUI PERMAINAN LOMPAT KELINCI
Authors: Mantolas Antonia , Lakapu Aleksander
Published: October 2019

The aim of this clas’s action research was intended to increase the numeracy skills of student  3rd grade through to game of rabbit jumping. This research was focus on the 3rd grade of SD GMIT Niki-Niki in the 2018/2019 school year. The analysis on the data which collected through test and interviews showed that the numeracy skills of student  3rd grade improved through the game of rabbit jumping.
Pengaruh Disposisi Matematis Terhadap Kemampuan Pemecahan Masalah Matematis Siswa
Authors: Mayratih Gisela Elfira , Leton Samuel Igo , Uskono Irmina Veni
Published: October 2019

This study aims to determine the effect of students' mathematical dispositions on mathematical problem solving abilities of students in class VII of SMP. The type of research used is quantitative. The sample in this study was class VII A, amounting to 30 people who were selected using simple random sampling from 6 existing classes. The type of data in this research is primary data with data collection used using a disposition questionnaire consisting of 28 items and tests consisting of 5 items of description. Testing the hypothesis in this study using a simple regression test. After the data is analyzed the regression equation is obtained as follows: Y = 16,312 + 0.523X. before testing the hypothesis, the data normality test and linearity test were carried out. Based on the data analysis, it was found that the t-test = 3.296 with significance = 0.003 and table = 2.048. then t count = 3.296> 2.048 = t table means that data is normally distributed. To see the achievement of the disposition indicators of junior high school students in the junior high school class, the average of each indicator is calculated and the achievement of the mathematical disposition indicator is 50.08%. Whereas for grouping mathematical dispositions, problem solving abilities obtained the highest dispositions having an average of 63.04, moderate dispositions having an average of 43.56, and low dispositions having an average of 40.51. Thus, it can be concluded that there is an influence of mathematical disposition on mathematical problem solving abilities of students of junior high school class.
MODEL PENDIDIKAN MASA KINI
Authors: Usboko Kornelis
Published: October 2019

“The goal of education according to Habermas is to humanize human being. There was a wise man from India ever said that an answer against one thousand problems was education. Nelson Mandela also said: education was the most powerful weapon that we could use to change the world. These all show us that education becomes a very urgent need of human life. Through education human being is processing to be more human and finding the solution against a number of problems of his/her life like poverty, ignorance and many other cases”.
TANGGUNG JAWAB AWAM DALAM PERUTUSAN DIAKONIA GEREJA
Authors: Jegalus Norbertus
Published: October 2019

Laymen in the Church have an unique mission in the world. They are sent by Christ the Lord to transform the world with the christian values. They have a great responsability in spreaching the Gospel to all people. In cooperation with the clergy, they should realize Jesus' teaching of love in the act of loving to each other, especially the sick, the poor, the suffer. They should promote human rights, justice, peace and common wealth in the society where they live. This is their mission based on the faith, Gospel and The Social Teaching of the Church. This mission is a form of diaconia of the laymen in the Church