bluuebunny/crossref_metadata_2025_split huggingface dataset:
PENGARUH MODEL PROBLEM SOLVING DENGAN PENDEKATAN CTL (CONTEXTUAL TEACHING AND LEARNING) TERHADAP KEAKTIFAN DAN HASIL BELAJAR SISWA PADA MATA PELAJARAN FISIKA
Authors: Sari Rofita 
Published: February 2019

Pembelajaran fisika yang menarik dan kemudahan untuk memahami konsep-konsep fisika bergantung pada seorang guru mendesain pembelajaran sehingga memberi respon dan rangsangan siswa lebih mudah diterima dan aktif dalam proses pembelajaran, akan tetapi terlihat masih banyak siswa yang belum aktif secara maksimal, hal ini disebabkan karena siswa mengakui bahwa Fisika itu adalah pelajaran yang sulit dan susah dipahami sehingga berpengaruh terhadap hasil belajar yang belum maksimal. Cara untuk mendorong hal tersebut maka didesain model pembelajaran problem solving dengan pendekatan CTL untuk mengetahui pengaruh model pembelajaran terhadap keaktifan dan hasil belajar siswa pada mata pelajaran Fisika kelas X SMKN 4 Kota Bima tahun pelajaran 2018/2019. Jenis penelitian ini adalah penelitian quasi eksperiment. Penelitian ini menggunakan desain secara deskriptif kualitatif untuk menentukan peningkatan aktifitas belajar siswa. Hasil belajar didesain secara Post-test control grup disigne, sampel dalam penelitian ini, yaitu kelas X NKPI sebanyak 20 orang siswa sebagai kelas eksperimen sedangkan kelas X TPHP sebanyak 18 orang siswa sebagai kelas kontrol yang diambil claster random sampling. Instrumen yang digunakan adalah lembar observasi keaktifan belajar siswa dan tes kognitif pada hasil belajar siswa. Teknik analisis yang digunakan adalah uji t-tes statistik parametik. Hasil rata-rata persentase untuk keaktifan belajar siswa pada kelas ekperimen dalam kategori (84.44% - 98.67%) sangat baik dan hasil rata-rata persentase keaktifan pada kelas kontrol (48.33% - 51.11%) dalam kategori cukup. kemudian bukti analisis uji hipotesis pada hasil belajar menunjukan bahwa thitung = 3.36 > ttabel 2.05 pada taraf signifikan 5 %, berarti bahwa Ha2 diterima “Terdapat pengaruh model problem solving dengan pendekatan CTL (contextual teaching and learning) terhadap hasil belajar siswa”. Dengan menigkatnya hasil rata-rata persentase pada kelas eksperimen dan diterimanya hipotesisi pada hasil belajar, maka disimpulkan bahwa model pembelajaran problem solving dengan pendekatan CTL (contextual teaching and learning) berpengaruh terhadap keaktifan dan hasil belajar siswa pada mata pelajaran Fisika kelas X SMKN 4 Kota Bima tahun pelajaran 2018/2019
Pembinaan karakter dalam pembelajaran matematika
Authors: Hartoyo Agung 
Published: February 2019

Anak-anak adalah harta karun bangsa. Nasib masa depan bangsa ada di pundak para generasi muda. Memperlakukan anak secara istimewa, baik perkembangan emosional, kesehatan, kecerdasan maupun perilaku mereka menjadi kewajiban bersama. Para pendidik bertanggung jawab untuk menggelorakan revolusi mental dalam rangka mengembangkan kemampuan dan membentuk watak serta peradaban bangsa yang bermartabat dalam mencerdaskan kehidupan bangsa. Intergrasipendidikan karakter dalam pembelajaran pada setiap mata pelajaran diarahkan untuk membawa peserta didik ke pengenalan nilai-nilai secara kognitif, penghayatan nilai secara afektif, dan bermuara pada pengamalan nilai secara nyata. Pendidikan karakter membekali kepada peserta didik ilmu, pengetahuan dan pengalaman budaya, perilaku yang berorientasi pada nilai-nilai ideal kehidupan, baik yang bersumber pada budaya lokal maupun budaya luar. Ada banyak local genius khasanah budaya bangsa yang dapat digali dari seantero kawasan nusantara yang sarat makna dan kaya akan nilai-nilai luhur budaya bangsa. Potensi budaya dikembangkan sebagai basis dan sumber belajar berbagai mata pelajaran untuk mewujudkan bangsa yang berjati diri. Matematika bukan sekedar kegiatan hitung menghitung, tetapi banyak yang berkaitan dengan pemberdayaan berbagai kekayaan yang tersedia di sekitar kehidupan peserta didik. Para guru matematika meski berpikir, berkreasi dan menghasilkan karya yang berguna untuk pembelajaran matematika, agar dapat mengajar dan mendidik peserta didik menuju masa depannya sebagaimana dicita-citakan dalam tujuan pendidikan nasional.
Kecemasan dan kemampuan siswa dalam memecahkan masalah matematika
Authors: Noor Fahriza 
Published: February 2019

Tujuan dalam penelitian ini adalah untuk mengetahui tingkat kecemasan matematika siswa, kemampuan siswa dalam memecahkan masalah matematika, serta hubungan antara kecemasan dan kemampuan siswa dalam memecahkan masalah matematika. Metode penelitian yang digunakan adalah penelitian kuantitatif. Populasi dalam penelitian ini adalah siswa kelas VI SDN Kebun Bunga 4 Banjarmasin, sedangkan sampel yang terambil adalah siswa kelas VIA. Hasil penelitian mengindikasikan bahwa (1) tingkat kecemasan siswa tergolong kurang cemas; (2) kemampuan siswa dalam memecahkan masalah matematika tergolong sangat tinggi; dan (3) terdapat hubungan antara kecemasan dengan kemampuan siswa dalam memecahkan masalah matematika.
Profil kemampuan spasial matematis siswa kelas XI SMA Negeri 1 Tuntang pada materi bangun ruang sisi lengkung
Authors: Afriyana Sinta , Mampouw Helti Lygia 
Published: February 2019

Penelitian ini bertujuan untuk menggambarkan kemampuan spasial matematis siswa kelas XI SMA N 1 Tuntang pada materi Bangun Ruang Sisi Lengkung. Jenis penelitian ini adalah penelitian kualitatif deskriptif. Pengambilan sampel dalam penelitian ini menggunakan teknik purposive sampling. Subjek penelitian terdiri dari 3 siswa kelas XI SMA yakni 1 siswa berkemampuan tinggi, 1 siswa berkemampuan sedang, dan 1 siswa berkemampuan rendah. Hasil Penelitian menunjukkan bahwa: subjek berkemampuan matematika tinggi dan subjek berkemampuan matematika sedang memiliki kemampuan spasial hampir sama atau bahkan sama, dengan hanya memiliki perbedaan dalam cara berpikirnya saja. Cara berpikir subjek berkemampuan tinggi lebih mudah dipahami saat di minta untuk menjelaskan dari pada subjek berkemampuan sedang. Sedangkan subjek berkemampuan matematika rendah memang memiliki kemampuan spasial dibawah subjek berkemampuan matematika tinggi dan subjek berkemampuan matematika sedang. Subjek berkemampuan matematika rendah saat menjawab soal pada jaring-jaring tabung subjek rendah masih kebingungan pada perputaran jaring-jaring tabung secara benar atau tepat. Subjek berkemampuan matematika rendah masih kesulitan untuk mengimajinasikan perputaran atau perpindahan pada suatu objek, dimana objek tersebut berada pada perspektif yang berbeda.
Pemberian scaffolding untuk menyelesaikan soal cerita materi perbandingan senilai dan berbalik nilai
Authors: Larasati Yulina , Mampouw Helti Lygia 
Published: February 2019

Penelitian kualitatif ini bertujuan untuk mendeskripsikan hasil pemberian scaffolding dalam membantu siswa menyelesaikan soal cerita materi perbandingan senilai dan perbandingan berbalik nilai. Instrumen utama dalam penelitian ini adalah peneliti sendiri, dibantu lembar tes dan pedoman wawancara. Subjek terdiri dari 3 siswa kelas VIII SMP N 1 Tengaran berkemampuan matematika rendah, pernah belajar materi perbandingan senilai dan berbalik nilai dan melakukan kesalahan terbanyak dalam menyelesaikan soal cerita materi perbandingan senilai dan berbalik nilai. Data kesalahan siswa dikelompokkan berdasarkan kriteria Newman. Hasil pengelompokkan ini menjadi dasar pemberian scaffolding. Desain pemberianan scaffolding adalah 3 level Anghileri yaitu environmental provisions, explaining, reviewing dan restructuring dan developing conceptual thinking. Hasil penelitian menunjukkan bahwa kesalahan terbanyak yang dilakukan subjek adalah kesalahan transformasi. Kesalahan membaca dan kesalahan memahami masalah diatasi dengan reviewing. Kesalahan transformasi dan kesalahan keterampilan ditangani dengan explaining dan restructuring. Kesalahan penulisan jawaban dan kesalahan kecerobohan diperbaiki dengan reviewing. Pemberian-pemberian scaffolding tersebut dapat membantu siswa memperbaiki kesalahan dalam menyelesaikan soal cerita materi perbandingan senilai dan berbalik nilai.
KARAYCANIN BUGÜNKÜ DURUMU:MYKOLAS FİRKOVİÇİUS İLE MARK LAVRİNOVİÇİUS’LERİN ANISINA
Authors: KOCAOĞLU Timur 
Published: February 2019

Karaycayı konuşanların sayısının
oldukça azalması dolayısıyla bu dili yeniden yaşatmaya çalışmanın artık çok geç
olduğu bir dönemde, Mykolas Firkovicius and Mark Lavrinoviçius’lerin
1985 ile 2011 yıllarında yaptıkları bilimsel çalışmalar Karay dili açısından
çok önemlidir. Firkovičius
çalışmalarında Karay yazı dilinin tümce kuruluşunda Türkçe özelliğini saklamaya
çabalarken, Lavrinoviçius de daha da mükemmel bir Rusça-Karayca
Sözlük, Karayca dil kursu kullanması ile çeşitli dil metinleri yayımladı. Bu
yazıda Karayların Litvanya ve Polonyada'ki tarihleri, dinleri ile Karay yazın
dilinin 1930’lardan günümüze kadar gelen durumu&nbsp;
konusunda bilgi veriliyor. Karaylar gibi çok az sayıdaki bir topluluğun
kendi anadilini canlandırabilmesi ve yaşatması için o topluluğun her bir
kişisinin bu iş için kararlı olması ve ayrıca&nbsp;
dışardan bu topluluğa yardım eli uzatılması gerekiyor. Litvanya’daki
Karay topluluğu arasında anadili Karaycayı gerek yazı dili ve gerekse konuşma
dili olarak en iyi bilen ve bu alanda&nbsp;
çok sayıda dinî, kültürel ve dilbilgisi kitapları hazırlanmıştır.
Photometry and Spectroscopy of Faint Candidate Spectrophotometric Standard DA White Dwarfs
Authors: Calamida Annalisa , Matheson Thomas , Saha Abhijit , Olszewski Edward , Narayan Gautham , Claver Jenna , Shanahan Clare , Holberg Jay , Axelrod Tim , Bohlin Ralph , Stubbs Christopher W. , Deustua Susana , Hubeny Ivan , Mackenty John , Points Sean , Rest Armin , Sabbi Elena 
Published: February 2019

Abstract
We present precise photometry and spectroscopy for 23 candidate spectrophotometric standard white dwarfs. The selected stars are distributed in the Northern hemisphere and around the celestial equator, and are all fainter than r ∼ 16.5 mag. This network of stars, when established as standards and together with the three Hubble Space Telescope primary CALSPEC white dwarfs, will provide a set of spectrophotometric standards to directly calibrate data products to better than 1%. In future deep photometric surveys and facilities, these new faint standard white dwarfs will have enough signal-to-noise ratio to be measured accurately while still avoiding saturation. They will also fall within the dynamic range of large telescopes and their instruments for the foreseeable future. This paper discusses the provenance of the observational data for our candidate standard stars. A comparison with models, reconciliation with reddening, and the consequent derivation of the full spectral energy density distributions for each of them is reserved for a subsequent paper.
Implications of a Hot Atmosphere/Corino from ALMA Observations toward NGC 1333 IRAS 4A1
Authors: Sahu Dipen , Liu Sheng-Yuan , Su Yu-Nung , Li Zhi-Yun , Lee Chin-Fei , Hirano Naomi , Takakuwa Shigehisa 
Published: February 2019

Abstract
We report high angular resolution observations of NGC 1333 IRAS 4A, a protostellar binary including A1 and A2, at 0.84 mm with the Atacama Large Millimeter/submillimeter Array. From the continuum observations, we suggest that the dust emission from the A1 core is optically thick, and A2 is predominantly optically thin. The A2 core, exhibiting a forest of spectral lines including complex molecules, is a well-known hot corino, as suggested by previous works. More importantly, we report, for the first time, solid evidence of complex organic molecules (COMs), including CH3OH, 13CH3OH, CH2DOH, and CH3CHO, associated with the A1 core seen in absorption. The absorption features mostly arise from a compact region around the continuum peak position of the A1 core. Rather than originating from a larger common envelope surrounding the protobinary, the COM features are associated with individual cores A1 and A2. Considering the signatures observed in both continuum and spectral lines, we propose two possible scenarios for IRAS 4A1: the COM absorption lines may arise from a hot-corino-like atmosphere at the surface of an optically thick circumstellar disk around A1, or the absorption may arise from different layers of a temperature-stratified, dense envelope.
A Complete Spectroscopic Census of A2029: A Tale of Three Histories
Authors: Sohn Jubee , Geller Margaret J. , Zahid H. Jabran , Fabricant Daniel G. 
Published: February 2019

Abstract
A rich spectroscopic census of members of the local massive cluster A2029 includes 1215 members of A2029 and its two infalling groups, A2033 and the Southern Infalling Group. The two infalling groups are identified in spectroscopic, X-ray, and weak-lensing maps. We identify active galactic nuclei (AGNs), star-forming galaxies, E+A galaxies, and quiescent galaxies based on the spectroscopy. The fractions of AGN and post-starburst E+A galaxies in A2029 are similar to those of other clusters. We derive the stellar mass (M
*)–metallicity relation of A2029 based on 227 star-forming members; A2029 members within 109
M
⊙ < M
* < 109.5
M
⊙ are more metal-rich than Sloan Digital Sky Survey galaxies within the same mass range. We utilize the spectroscopic index

, a strong age indicator, to trace past and future evolution of the A2029 system. The median

of the members decreases as the projected clustercentric distance increases for all three subsystems. The

relations of the members in A2029 and its two infalling groups differ significantly, indicating the importance of stochastic effects for understanding the evolution of cluster galaxy populations.
Forward Modeling of SDO/AIA and X-Ray Emission from a Simulated Flux Rope Ejection
Authors: Zhao 赵 Xiaozhou 小舟 , Xia Chun , Doorsselaere Tom Van , Keppens Rony , Gan Weiqun 
Published: February 2019

Abstract
We conduct forward-modeling analysis based on our 2.5 dimensional magnetohydrodynamics (MHD) simulation of magnetic flux rope (MFR) formation and eruption driven by photospheric converging motion. The current sheet (CS) evolution during the MFR formation and eruption process in our MHD simulation can be divided into four stages. The first stage shows the CS forming and gradually lengthening. Resistive instabilities that disrupt the CS mark the beginning of the second stage. Magnetic islands disappear in the third stage and reappear in the fourth stage. Synthetic images and light curves of the seven Solar Dynamics Observatory (SDO)/Atmospheric Imaging Assembly (AIA) channels, i.e., 94 Å, 131 Å, 171 Å, 193 Å, 211 Å, 304 Å, and 335 Å, and the 3–25 keV thermal X-ray are obtained with forward-modeling analysis. The loop-top source and the coronal sources of the soft X-ray are reproduced in forward modeling. The light curves of the seven SDO/AIA channels start to rise once resistive instabilities develop. The light curve of the 3–25 keV thermal X-ray starts to go up when the reconnection rate reaches one of its peaks. Quasiperiodic pulsations (QPPs) appear twice in the SDO/AIA 171 Å, 211 Å, and 304 Å channels, corresponding to the period of chaotic (re)appearance and CS-guided displacements of the magnetic islands. QPPs appear once in the SDO/AIA 94 Å and 335 Å channels after the disruption of the CS by resistive instabilities and in the 193 Å channel when the chaotic motion of the magnetic islands reappears.
Evaluating the Optical Classification of Fermi BCUs Using Machine Learning
Authors: Kang Shi-Ju , Fan Jun-Hui , Mao Weiming , Wu Qingwen , Feng Jianchao , Yin Yue 
Published: February 2019

Abstract
In the third catalog of active galactic nuclei detected by the Fermi-LAT (3LAC) Clean Sample, there are 402 blazar candidates of uncertain type (BCUs). Due to the limitations of astronomical observation or intrinsic properties, it is difficult to classify blazars using optical spectroscopy. The potential classification of BCUs using machine-learning algorithms is essential. Based on the 3LAC Clean Sample, we collect 1420 Fermi blazars with eight parameters of γ-ray photon spectral index; radio flux; flux density; curve significance; the integral photon flux in 100–300 MeV, 0.3–1 GeV, and 10–100 GeV; and variability index. Here we apply four different supervised machine-learning (SML) algorithms (decision trees, random forests, support vector machines, and Mclust Gaussian finite mixture models) to evaluate the classification of BCUs based on the direct observational properties. All four methods can perform exceedingly well with more accuracy and can effectively forecast the classification of Fermi BCUs. The evaluating results show that the results of these methods (SML) are valid and robust, where about one-fourth of sources are flat-spectrum radio quasars (FSRQs) and three-fourths are BL Lacertae (BL Lacs) in 400 BCUs, which are consistent with some other recent results. Although a number of factors influence the accuracy of SML, the results are stable at a fixed ratio 1:3 between FSRQs and BL Lacs, which suggests that the SML can provide an effective method to evaluate the potential classification of BCUs. Among the four methods, Mclust Gaussian Mixture Modeling has the highest accuracy for our training sample (4/5, seed = 123).
The attraction of Tremex apicalis (Hymenoptera, Siricidae, Tremecinae) and its parasitoid Ibalia japonica (Hymenoptera, Ibaliidae) to the fungus Cerrena unicolor
Authors: Kuramitsu Kazumu , Ishihara Teruhito , Sugita Aki , Yooboon Thitaree , Lustig Barry , Matsumori Yuko , Yamada Hideo , Kinoshita Natsuko 
Published: February 2019

Woodwasps (Hymenoptera: Siricidae) are saproxylic insects and a common forest pest. Siricid woodwasps are classified into two subfamilies: Siricinae and Tremecinae. All known symbiotic fungi of Siricinae are in the genusAmylostereumBoidin while some species of Tremecinae have been observed to have a relationship with the fungusCerrenaunicolor(Bull.) Murrill. Previous studies about the host searching behavior of woodwasps and their parasitoids have focused primarily on the subfamily Siricinae.We analyzed the role ofC.unicolorvolatiles on the host searching behavior ofTremexapicalisMatsumura (Hymenoptera: Siricidae: Tremecinae) and its parasitoid Ibalia (Tremibalia) japonica Matsumura (Hymenoptera: Ibaliidae). The results of an olfactory response experiment indicated that the females ofT.apicalisand its parasitoid find their respective hosts using volatiles fromC.unicolor. Using DNA barcode, we identified basidiocarps on the trees infested withT.apicalis.The basidiocarps were all white-rot fungi that cause sapwood decay, includingC.unicolor. Two additional species that we identified belonged to genera closely related toC.unicolor.Woodwasp species are known to carry symbiotic fungi in a pair of specialized sacs called mycangia. Notably we found that mycangia-like structures were absent in the abdomens ofT.apicalisfemales. To the best of our knowledge,Xerisspectrum(Linnaeus) (Hymenoptera: Siricidae) is the only reported example of woodwasp species that do not contain symbiotic fungi in their bodies.Our results suggested that: (1)T.apicalisfemales search for host wood that is already infected with sapwood decaying fungus using volatile compounds; (2)T.apicalis’ female parasitoid also uses volatile compounds from fungus to locate wood that is infested with its potential host.
Characteristic of person-centered care as documented in medical records at a medical department – a mixed methods
Authors: Rosengren Kristina , Ulin Kerstin , Carlström Eric 
Published: February 2019

Objective: Few studies describe characteristics of content of person-centrered care (PCC) in hospital care. Therefore, this study aim to describe and compare documentation in medical records regarding content of PCC for two diagnostic groups; Chronic Obstructive Pulmonary Disease (COPD) and Chronic Heart Failure (CHF) at a medical department in a hospital in Sweden.Methods: Documentation within medical records (n = 121) regarding content of PCC (patient resources, responsibility, i.e. partnership) were analysed by a mixed methods.Results: The results describe documented healthcare activities (medical records) among patients (COPD1 = 88; CHF2 = 33) treated at medical wards practicing PCC (n = 69, 391/302) and traditional medical wards (n = 52, 491/32). The study showed limited documentation in all medical records regardless of care; however, patients with CHF have higher documentation regarding content of PCC compare to COPD in 6 (symptoms, home situation, objectives, caring activities, patients resources, continuing care) out of 7 areas (planning processes).Conclusions: To improve healthcare with limited resources, there is need to switch mind-sets from what (diagnosis) to who (resources) using all evidence (expert=scientific to expert=lived experiences) by collecting narratives to facilitate mutual health plans (partnership). This change in healthcare organisation facilitates by transformative and shared leadership to improve teamwork (health professionals, patient, relative) in partnership with all involved.
Advancing Methods of Assessing Bone Quality to Expand Screening for Osteoporosis
Authors: Komar Carolyn , Ahmed Mohammed , Chen Agape , Richwine Hannah , Zia Nida , Nazar Andrea , Bauer Laurie 
Published: February 2019

Abstract

Context
Dual–energy x-ray absorptiometry (DXA) limits osteoporosis screening because of machine size, technical requirements for operation, and exposure to ionizing radiation.

Objective
To establish data ranges from calcaneus ultrasonography (US) that correspond to bone mineral density (BMD) stratification identified by DXA and to determine whether vitamin D concentration adds to US bone health assessment.

Methods
Patients scheduled for DXA at the Robert C. Byrd Clinic, a rural primary care facility in Lewisburg, West Virginia, were recruited from June 2015 to June 2016. Ultrasonography was used to scan the left and right calcaneus of the patients, and blood was collected from a finger prick for vitamin D analysis. Information was collected regarding Fracture Risk Assessment tool parameters, menstrual history, and drug and supplement use. The correlations within and between DXA and US measurements were calculated, as well as the correlations between DXA and US measurements and vitamin D levels. Predictive performance of US readings on bone health determined by DXA scan was assessed with area under the curve analysis using receiver operator characteristic curves.

Results
Ninety-nine participants were included. Ultrasonography readings of either the left or right foot were predictive of good vs poor bone quality. No differences were found between US scans of the left foot vs the right foot. Area under the curve values for US BMD T scores for the left and right foot were 0.69 and 0.68, respectively. There was no correlation between DXA- and US-assessed BMD and vitamin D concentrations. Negative correlations were observed between the DXA BMD T scores and vitamin D concentration of the spine and right hip; negative correlations were also observed in the Z score from the spine in the subset of participants who reported not taking vitamin D supplements.

Conclusion
Ultrasonography of the calcaneus offers a low-cost, efficient means to screen bone health. The affordability and mobility of a US machine enables its use as a screening method that may be applicable to large numbers of people. This study established a T score greater than −1.05 as an indicator of good bone quality and a T score less than −1.05 as an indicator of poor bone quality when using US for BMD screening.