bluuebunny/crossref_metadata_2025_split huggingface dataset:
KREATIVITAS SISWA SMP DALAM PEMECAHAN MASALAH MATEMATIKA TERBUKA DITINJAU DARI GAYA BELAJAR
Authors: Maftuh Moh. Syukron 
Published: October 2019

Penelitian ini dilatarbelakangi oleh pemikiran bahwa untuk menghadapi tantangan perkembangan IPTEK diperlukan sumber daya yang memiliki keterampilan tinggi yang melibatkan pemikiran kritis, logis, kreatif dan kemampuan bekerjasama yang baik, tiga komponen kunci yang dinilai dalam berpikir kreatif adalah kefasihan (fluency), fleksibilitas (flexibility) dan kebaruan (novelty). Kefasihan mengacu pada banyaknya ide-ide yang dibuat dalam merespons sebuah perintah. Fleksibilitas tampak pada perubahan-perubahan pendekatan ketika merespons perintah. Kebaruan merupakan keaslian ide yang dibuat dalam merespons perintah. Untuk mengembangkan dan mengasah kemampuan kreativitas siswa, maka siswa harus diperkenalkan dengan masalah-masalah matematika yang terbuka yang memungkinkan memiliki cara-cara yang berbeda dalam penyelesaianya serta memiliki jawaban yang beragam atau bahkan memiliki banyak solusi benar sehingga mampu merangsang peserta didik untuk berpikir kreatif, karena dengan masalah-masalah matematika yang terbuka siswa diharapkan dapat mengaitkan antara konsep yang satu dengan yang lain dan menggunakannya dalam pemecahan masalah. Dalam memecahkan suatu masalah, terdapat informasi yang harus diolah dan diserap dengan baik agar masalah tersebut dapat terselesaikan, aktifitas menyerap, mengatur, dan mengolah informasi disebut, itu yang dikatakan sebagai gaya belajar. Banyak ciri perilaku yang merupakan petunjuk kecenderungan gaya belajar seseorang; yaitu gaya belajar visual, auditori dan kinestetik. Tujuan penelitian ini adalah untuk mendeskripsikan kreatifitas siswa dalam pemecahan masalah matematika terbuka dengan gaya belajar visual, auditori, dan kinestetik. Subjek penelitian ini terdiri dari tiga subjek yang masing-masing memiliki gaya belajar visual, auditori dan kinestetik. Penelitian ini merupakan penelitian diskriptif dengan pendekatan kualitatif. Adapun tahapan penelitian yang digunakan peneliti terdiri dari tiga tahap, yaitu tahap persiapan, tahap pelaksanaan, dan tahap analisis. Hasil penelitian menunjukan subjek dengan gaya belajar visual dalam memecahkan masalah matematika terbuka memenuhi tiga indikator kreativitas; yakni, kefasian, fleksibilitas dan kebaruan. Subjek dengan gaya belajar auditori dalam memecahkan masalah matematika terbuka hanya memenuhi satu indikator kreativitas; yakni kefasihan, sedangkan subjek dengan gaya belajar kinestetik dalam memecahkan masalah matematika terbuka hanya memenuhi satu indikator kreativitas; yakni kefasihan.
Kata Kunci: kreativitas, pemecahan masalah matematika terbuka, gaya belajar
COOPERATIVE LEARNING DENGAN MODEL TGT (TEAMS GAMES TOURNAMENT) MATERI BILANGAN BULAT BAGI SISWA KELAS IV SEKOLAH DASAR
Authors: L.E. Endrayana Putut 
Published: October 2019

Mathematics is a science that underlies the development of modern technology, has an important role in various disciplines and advance the human mind. The development in the field of information and communication technology is influenced and based on the development of Mathematics. Mathematics is a lesson that is directly related to the development of science and technology, both material and its usefulness. So Mathematics needs to be developed and upgraded including materials, teaching and learning process, environment as well as school facilities, as the special purpose of teaching Mathematics in primary school is to develop numeracy skills that are useful in everyday life. Based on the results of observations during the learning, the problem faced by students is the lack of mastery of the concept of integers so that student learning outcomes are still lacking. Teachers also still dominate learning by lecturing method so that happened is teacher centered. This makes the learners less motivated and less enthusiastic in following the lesson. For that we need to make changes in learning that is with the model of learning that creates learning to be student centered. So learning activities centered on the learners, teachers as a motivator and facilitator in it so that the atmosphere of the classroom more conducive. Teams Games Tournament (TGT) becomes one of the learning models that can be applied to change the above paradigm. This is evident in significant changes in post test results of students versus pre test results.
Keywords: Teams Games Tournament (TGT), cooperative, students centered
PENERAPAN METODE MIND MAPPING PADA PEMBELAJARAN MATEMATIKA SIWA SMPN 48 SURABAYA
Authors: Nurdamayanti Aulia 
Published: October 2019

This research is based on the frequent learning of mathematics which is generally centered on the teacher, which is often considered able to make the students can understand the material given. While, students should participate actively in learning, to be able to build ideas through the ability and thought in accordance with their understanding. This research is quantitative descriptive. The techniques used in this study are observation, questionnaires, and tests. Learning model in this research is using mind mapping method, because mind mapping method can help students to not always record writing as a whole. Students can present words, ideas, made on their own thoughts, understanding and creativity, and can understand the material for a longer period of time. Based on the background, the purpose of this research is to describe the student activity during the application of mind mapping method, to describe the student's response and the learning result after applying the mind mapping method on persamaan garis lurus. The conclusion that can be drawn from the application of mind mapping method on the equation of persamaan garis lurus of students of class VIII SMP Negeri 48 Surabaya is that with mind mapping method can make the students more active role in the class. And for learning outcomes also experience mastery at equation of equation..
Keywords: mind mapping, activity, response, learning outcomes
PENERAPAN PENDEKATAN CONTEXTUAL TEACHING AND LEARNING SEBAGAI UPAYA MENINGKATKAN PRESTASI BELAJAR MATEMATIKA SISWA
Authors: P. Silviana Maya 
Published: October 2019

Classical learning with teacher-centered is regarded as one of the causative factors of low mathematics learning achievement of 11th grade of KR 2 students in SMKN 8 Surabaya. Hence, teachers are required to find and get someway which can reform learning motivation of students. One alternative ways that can be used is by applying Contextual Teaching and Learning approach. This research is a PTK with two cycles, that each cycle has four stages. From the analysis results, it was found that the students' learning outcomes have been classically improved from first to the second cycle. In the first cycle the percentage of students' learning success reached 58.62%. At the same time, in the second cycle, it increased up to 86.20%. Therefore, it can be concluded that the Contextual Teaching and Learning Approach can upgrade the mathematics learning achievement of student, and can be used as an alternative way in learning mathematics.
Keywords: Contextual Teaching and Learning Approach, mathematic learning achievement.
PENGEMBANGAN LEMBAR KEGIATAN MAHASISWA MATEMATIKA DASAR
Authors: Susanah Susanah 
Published: October 2019

Penelitian ini bertujuan untuk mendeskripsikan proses pengembangan dan menghasilkan Lembar Kegiatan Mahasiswa (LKM) mata kuliah Matematika Dasar untuk pembelajaran yang valid, praktis dan efektif. Penelitian ini dilaksanakan di Program Studi Pendidikan Biologi angkatan 2018 tahun akademik 2018/2019. Proses pengembangan LKM ini dilaksanakan dengan mengikuti tahapan pengembangan hasil modifikasi model pengembangan yang dikemukakan oleh Plomp, yang disebut model umum pemecahan masalah pendidikan (The general model of educational problem solving). Model ini terdiri dari lima fase, yakni: (a) Investigasi Awal, (b) Desain (Design), (c) Realisasi/Konstruksi (Realization/Construction), (d) Pengujian, Evaluasi, dan Revisi (Test, Evaluation, and Revision), dan (e) Implementasi (Implementation). Pada penelitian ini fase 5 (Implementasi) tidak dilaksanakan. LKM yang dihasilkan sebanyak 7 untuk perkuliahan selama satu semester. LKM yang dihasilkan memenuhi kriteria sangat valid dan praktis didasarkan simpulan dua orang ahli yang menyatakan bahwa LKM tersebut dapat digunakan dengan sedikit revisi pada redaksi dan sajian materi. Berdasarkan hasil pengamatan proses pembelajaran oleh seorang pengamat pembelajaran Matematika Dasar dapat terlaksana dengan baik. LKM yang dihasilkan juga dinyatakan efektif karena mahasiswa yang memprogram mata kuliah Matematika Dasar memperoleh nilai minimal B-, mahasiswa juga memberikan respon positip terhadap aspek yang ditanyakan.
ALTERNATIF PEMBELAJARAN MATEMATIKA MENGGUNAKAN MEDIA PAPAN ARSIR PECAHAN
Authors: Indrawati Delia , Cahyanti Dewi Nur 
Published: October 2019

Pembelajaran merupakan kegiatan yang membawa peserta didik memahami materi, ilmu pengetahuan, dan juga pengalaman untuk bekal kehidupannya di masa mendatang. Salah satu komponen dalam menunjang pembelajaran ialah media pembelajaran. Media memiliki peran penting dalam menyampaikan pesan dari guru kepada siswa salah satunya dalam materi matematika. Mengajarkan matematika di Sekolah Dasar haruslah disesuaikan dengan beberapa hal. Matematika Sekolah Dasar mencakup materi-materi yang diajarkan dengan konsep-konsep dan sesuai teori belajar yang mendukung. Penanaman dan pemahaman konsep dari suatu materi memerlukan proses pembelajaran yang menarik dan sesuai agar tidak menjadikan peserta didik mengalami miskonsepsi, untuk itu diperlukan alternatif pembelajaran yang sesuai salah satunya ialah papan arsir pecahan. Papan arsir pecahan merupakan media visual yang dikembangkan menggunakan papan yang berasal dari papan melamin dan akrilik yang dilapisi kain flanel. Media papan arsir pecahan merupakan media yang penggunaannya dengan cara diarsir. Media papan arsir pecahan akan memberikan penjelasan mengenai konsep operasi hitung pecahan. Media pembelajaran yang papan arsir pecahan ini memiliki komponen â€“ komponen yaitu : (1) Papan utama (2) Papan arsir transparan (3) Papan Arsir tidak trasparan (4) buku petunjuk (5) Alat untuk mengarsir (Spidol) (6) box (7) Penghapus. Komponen-komponen tersebut dapat digunakan sebagai alternatif pembelajaran matematika di Sekolah Dasar.
PEMAHAMAN MAHASISWA DALAM ANALISIS MATERI DENGAN MENGGUNAKAN METODE DRILLING YANG BERORIENTASI PADA PENDEKATAN KONTEKSTUAL PADA MATA KULIAH PERENCANAAN PEMBALAJARAN
Authors: Susiloningsih Wahyu 
Published: October 2019

Artikel ini mendeskripsikan pemahaman mahasiswa dalam analisis materi dengan menggunakan metode drilling yang berorientasi pada pendekatan kontekstual pada mata kuliah perencanaan pembelajaran. Metode pembelajaran dapat diartikan sebagai cara yang digunakan untuk mengimplementasikan rencana yang sudah disusun dalam bentuk kegiatan nyata dan praktis untuk mencapai tujuan pembelajaran. Metode Drill merupakan suatu cara mengajar dengan memberikan latihan-latihan terhadap apa yang telah dipelajari mahasiswa sehingga memperoleh suatu keterampilan tertentu.Pemahaman merupakan satu proses yang dapat terlihat dari hasil belajar dimana suatu proses perubahan tingkah laku dalam pengetahuan, sikap, dan ketrampilan yang diperoleh dalam jangka waktu yang lama. Analisis materi, sebelum mentransformasikan materi pembelajaran kepada peserta didik, terlebih dahulu perlu dilakukan analisis materi pembelajaran semata-mata agar pembelajaran lebih bermakna.
Penelitian ini termasuk penelitian kuantitatif deskriptif. Subjek dalam penelitian ini adalah mahasiswa PGSD UNIPA angkatan 2016 kelas C. Teknik pengambilan data yang digunakan adalah observasi lembar keterlaksanaan RPP dan tes. Data yang terkumpul akan dianalisis secara statistik dan kemudian di deskriptifkan. Hasil analisis di interpretasikan sehingga menghasilkan kesimpulan sesuai dengan permasalahan dalam penelitian ini.
Hasil penelitian yang diperoleh dari tes hasil perkuliahan mahasiswa sebelum menggunakan metode drilling menunjukkan nilai rata-rata 70 dengan kategori baik. Selanjutnya tes hasil perkuliahan mahasiswa setelah menggunakan metode drilling yang berorientasi pada pendekatan kontesktual menunjukkan nilai rata-rata 90.
Dari hasil tersebut dapat disimpulkan bahwa terdapat peningkatan pemahaman mahasiswa yang diukur melalui tes hasil belajar sebelun dan sesudah menggunkan metode drilling yang berorientasi pada pendekatan kontekstual
The Filamentary Radio Lobes of the Seyfert–Starburst Composite Galaxy NGC 3079
Authors: Sebastian Biny , Kharb P. , O’Dea C. P. , Colbert E. J. M. , Baum S. A. 
Published: October 2019

Abstract
We present results from multifrequency polarization-sensitive Very Large Array observations of the Seyfert–starburst composite galaxy NGC 3079. Our sensitive radio observations reveal a plethora of radio “filaments” comprising the radio lobes in this galaxy. We analyze the origin of these radio filaments in the context of existing Chandra X-ray and HST emission-line data. We do not find a one-to-one correlation of the radio filaments with the emission-line filaments. The northeastern lobe is highly polarized with polarization fractions ∼33% at 5 GHz. The magnetic fields are aligned with the linear extents of the optically thin filaments, as observed in our, as well as other, observations in the literature. Our rotation measure images show evidence for rotation measure inversion in the northeastern lobe. Our data best fit a model where the cosmic rays follow the magnetic field lines generated as a result of the dynamo mechanism. There could be additional effects like shock acceleration that might also be playing a role. We speculate that the peculiar radio lobe morphology is a result of an interplay between both the superwinds and the active galactic nucleus jet that are present in the galaxy. The jet, in fact, might be playing a major role in providing the relativistic electron population that is present in the radio lobes.
On the Gas Dynamic Features of the Interacting Binary System UU Cas
Authors: Kononov Dmitry A. , Gorda Stanislav Yu. , Parfenov Sergey Yu. 
Published: October 2019

Abstract
We present the results of spectroscopic observations and Hα Doppler tomography of the massive close binary system UU Cas where a giant star fills its Roche lobe (donor) and transfers material through the vicinity of the L
1 point onto a massive but rather compact stellar companion (accretor). The system has been observed at the 1.2 m telescope of the Kourovka Astronomical Observatory. By analyzing the obtained spectra and computed Doppler tomogram, we suggest that at least three elements of the gas dynamic pattern in the system contribute to the Balmer Hα emission line profiles. These elements are: the stream from the L
1 point, the stellar wind from the accretor, and the diffuse disk, surrounding the accretor. In combination with the estimates of the companions’ masses, our findings indicate that the system is at the late stage of the first mass transfer phase of its evolution.
The Astrochemical Impact of Cosmic Rays in Protoclusters. II. CI-to-H2 and CO-to-H2 Conversion Factors
Authors: Gaches Brandt A. L. , Offner Stella S. R. , Bisbas Thomas G. 
Published: October 2019

Abstract
We utilize a modified astrochemistry code that includes cosmic-ray (CR) attenuation in situ to quantify the impact of different CR models on the CO-to-H2 and CI-to-H2 conversion factors, X
CO and X
CI, respectively. We consider the impact of CRs accelerated by accretion shocks, and show that clouds with star formation efficiencies greater than 2% have X
CO = (2.5 ± 1) × 1020 cm−2(K km s−1)−1, consistent with Milky Way observations. We find that changing the CR ionization rate from external sources from the canonical ζ ≈ 10−17 to ζ ≈ 10−16 s−1, which better represents observations in diffuse gas, reduces X
CO by 0.2 dex for clusters with surface densities below 3 g cm−2. We show that embedded sources regulate X
CO and decrease its variance across a wide range of surface densities and star formation efficiencies. Our models reproduce the trends of a decreased X
CO in extreme CR environments. X
CI has been proposed as an alternative to X
CO due to its brightness at high redshifts. The inclusion of internal CR sources leads to 1.2 dex dispersion in X
CI ranging from 2 × 1020 < X
CI < 4 × 1021 cm−2 (K km s−1)−1. We show that X
CI is highly sensitive to the underlying CR model.
Dust-vortex Instability in the Regime of Well-coupled Grains
Authors: Surville Clément , Mayer Lucio 
Published: October 2019

Abstract
We present a novel study of dust-vortex evolution in global two-fluid disk simulations to find out if evolution toward high dust-to-gas ratios can occur in a regime of well-coupled grains with low Stokes numbers (St = 10−3 − 4 × 10−2). We design a new implicit scheme in the code RoSSBi, to overcome the short time-steps occurring for small grain sizes. We discover that the linear capture phase occurs self-similarly for all grain sizes, with an intrinsic timescale (characterizing the vortex lifetime) scaling as 1/St. After vortex dissipation, the formation of a global active dust ring is a generic outcome confirming our previous results obtained for larger grains. We propose a scenario in which, regardless of grain size, multiple pathways can lead to local dust-to-gas ratios of about unity and above on relatively short timescales, <105 yr, in the presence of a vortex, even with St = 10−3. When St > 10−2, the vortex is quickly dissipated by two-fluid instabilities, and large dust density enhancements form in the global dust ring. When St < 10−2, the vortex is resistant to destabilization. As a result, dust concentrations occur locally due to turbulence developing inside the vortex. Regardless of the Stokes number, dust-to-gas ratios in the range 1–10, a necessary condition to trigger a subsequent streaming instability, or even a direct gravitational instability of the dust clumps, appears to be an inevitable outcome. Although quantitative connections with other instabilities still need to be made, we argue that our results support a new scenario of vortex-driven planetesimal formation.
A Wind-disk Self-irradiation Model for Supercritical Accretion
Authors: Yao Yuhan , Feng Hua 
Published: October 2019

Abstract
Optical emission from actively accreting X-ray binaries is dominated by X-ray reprocessing on the outer disk. In the regime of supercritical accretion, strong radiation will power a massive wind that is optically thick and nearly spherical, and will occult the central hard X-rays from irradiating the outer disk. Instead, thermal emission from the wind will act as a new source of irradiation. Here, we construct a self-irradiation model in which the inner disk (within the wind photosphere) is completely blocked by the wind, the middle part (between the wind photosphere and scattersphere) is heated by the wind directly, and the outer disk (beyond the wind scattersphere) is heated by photons leaving the scattersphere. The model can adequately fit the UV/optical SED of NGC 247 X-1, a candidate source with supercritical accretion, while the standard irradiation model fails to produce a self-consistent result. The best-fit parameters suggest that the source contains a stellar-mass black hole with an accretion rate roughly 100 times the critical value. Remarkably, the UV/optical fitting predicts a wind photosphere that is consistent with X-ray measurements, although it is an extrapolation over three orders of magnitude in wavelength. This implies that supercritical accretion does power a massive wind and the UV/optical data are useful for constraining the wind structure.
Ligament-Tendon Fixation: Analysis of a New Stitch and Comparison With Standard Techniques
Authors: Krackow Kenneth A , Thomas Stephen C , Jones Lynne C 
Published: October 2019

ABSTRACT: A newly devised locking loop tendon- ligament suture was evaluated for its clinical application. The suture is relatively simple to use and is particularly suited to flat structures such as the medial collateral ligament, joint capsule, and patellar tendon. It affects tension and resistance to pull out without exerting major purse stringing or bunching.
In a laboratory setting, this suture technique has been compared to fixation by individual sutures and several varieties of staple fixation. Simple suture fixation was quite weak, measuring 100 newtons (N). Staple fixation is not only weaker than the ligament suture, but is more highly dependent on bone quality and is generally more variable. When employed with strong suture material, a doubled ligament suture was found to be nearly twice as strong (392 N) as staple fixation into bone (208 N) and demonstrated a mean pul lout strength close to the forces observed on human anterior cruciate ligaments. In combination with a well placed ligament staple into good quality bone, fixation was further enhanced (482 N) and statistically significantly improved (P>.05).
Adult Basic Education: Community Health Partnerships and Health Disparities
Authors: Hohn Marcia Drew , Lawrence Winston , McKinney Julie , Rosen David J. , Santos Maricel G. , Sheppard Rob , Smith Gregory , Ziskind Alexandra 
Published: October 2019

Background:
Adult Basic Education (ABE) is the national system that offers adults with low literacy and/or limited English with educational services in reading, writing, math, technology, and communications from basic levels to high school equivalency, with specialty programs in transition to community colleges and family literacy.

Brief Description of Activity:
To show the role of ABE in increasing health literacy in low literate and/or limited English populations through partnership with community health organizations (CHOs).

Implementation:
This article was developed through a collaborative thought process over a period of 8 months with experts from the field of ABE in development of health literacy within low literate and/or limited English populations. It describes the research that links low literacy and/or limited English with poor health, and introduces how ABE and CHOs have addressed these issues together. It also introduces research on the impact on learners of integrating health into ABE.

Results:
ABE learners have consistently shown a strong interest in learning about health for themselves and their families, and health content energizes ABE instruction. Learners report improvements of basic health knowledge, their confidence communicating with health care professionals, enhanced self-efficacy, and intention to make changes in such health behaviors as diet and tracking blood pressure. Partnerships between ABE programs and their local CHOs strengthen the teaching/learning process and can be mutually beneficial. ABE provides access to hard-to-reach populations, a safe learning environment, and teaching expertise. CHOs provide health expertise, preventive health screenings, and access to treatments.

Lessons Learned:

The link between low literacy and poor health is no longer disputed. ABE programs and many CHOs share a common mission and commitment to serving vulnerable populations. Stronger partnerships between these organizations should be viewed as a viable strategy for addressing health disparities. A coordinated effort of community health centers across the nation is required to meaningfully respond to health disparities as a national social issue.

[
HLRP: Health Literacy Research and Practice
. 2019;3(Suppl.):S1–S7.]

Plain Language Summary:
This article introduces ABE and the role this system plays in improving health literacy within populations with low health literacy and/or limited English populations. It details the educational services the system provides, how health content has been integrated into instruction, the impact on learners, and how partnerships between ABE programs and community health services strengthen the work.