bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pengembangan Perangkat Pembelajaran Matematika Dengan Kombinasi Pendekatan Matematika Realistik Dan Scientific Pada Siswa Kelas VII SMP
Authors: Sirajuddin Sirajuddin 
Published: March 2019

Abstrak: Penelitian ini merupakan penelitian pengembangan (developmental research). Untuk mengembangkan perangkat pembelajaran yang valid, praktis, dan efektif. Perangkat pembelajaran yang dimaksud dalam penelitian ini yaitu: Rencana Pelaksanaan Pembelajaran (RPP), Lembar Kegiatan Siswa (LKS), Buku teks pelajaran, dan Tes Hasil Belajar (THB). Proses pengembangan perangkat pembelajaran menggunakan model 4-D dari Thiagarajan yang terdiri dari 4 tahapan yaitu: (1) tahap pendefinisian, (2) tahap perancangan, (3) tahap pengembangan, (4) tahap penyebaran. Perangkat pembelajaran yang dikembangkan divalidasi oleh dua orang ahli dengan nilai rata-rata keseluruhan dari tiap aspek perangkat pembelajaran himpunan dengan kombinasi pendekatan realistik dan saintifik yang dihasilkan (buku teks pelajaran, rencana pelaksanaan pembelajaran, lembar kegiatan siswa dan tes hasil belajar) dinyatakan valid dan layak untuk diujicobakan. Uji coba dilakukan pada Kelas VIISMP N 21 Mataram dengan jumlah siswa sebanyak 29 orang. Dari hasil analisis keterlaksanaan perangkat menunjukkan bahwa keterlaksanaan perangkat pembelajaran himpunan berbasis kombinasi realistik dan saintifik memenuhi kriteria praktis dan berada pada kategori sangat baik. Serta memenuhi kriteria efektif yaitu diperoleh respon siswa positif terhadap pembelajaran, aktifitas siswa berada pada kategori sangat aktif dan hasil belajar telah tuntas secara klasikal (84,7% siswa yang memperoleh nilai di atas 75 dari nilai ideal 100). Dengan demikian, perangkat pembelajaran himpunan dengan kombinasi pendekatan realistik dan saintifik telah valid, praktis dan efektif..Abstract: This studi was develomental research to develop learning package which is valid, practical, and effective. The intended learning package in this study is as follows: lesson plan, student’s workbook, textbook, and test of learning result. The development process of learning package employed 4-D model based on thiagarajan which consist of 4 phases, namely (1) defining phase, (2) design phase, (3) development phase, and (4) dissemination phase. The learning package developed was validated by two experts with the overall aspect of each aspect of the set learning with combination of realistic and scientific approaches produced (textbook, lesson plan, student’s workbook, and test of learning result) is confirmed as valid and feasible to be tested. The test is conducted to grade VII at SMP N 21 Mataram with the total of 29 students. The result base on the analysis of package implementation reveals that the set of learning sets based on reaistic and scientific approach meets effective criteria wich is obtained from positive response of the students toward learning; students’ activities is in very active category and the learning result has completed calssically (84.7% students obtain the score above 75 from the ideal 100). Therefore, the set learning package with realistic and scientific mixed approaches is valid, practical, and effective.
Analisis Kesalahan Siswa Dalam Menyelesaikan Soal Pada Materi Operasi Penjumlahan dan Pengurangan Bentuk Aljabar Bagi Siswa Kelas VII SMP Kristen 2 Salatiga
Authors: Aditya Cahyani Cindy , Sutriyono Sutriyono 
Published: March 2019

Abstrak: Penelitian ini bertujuan untuk mengetahui jenis-jenis kesalahan yang dilakukan siswa kelas VII SMP Kristen 2 Salatiga dalam mengerjakan soal pada materi operasi penjumlahan dan pengurangan bentuk aljabar, serta untuk mengetahui faktor-faktor penyebab siswa melakukan kesalahan. Metode penelitian ini adalah deskriptif kualitatif dengan menganalisis kesalahan siswa dari instrumen yang diberikan. Sampel yang diambil adalah siswa kelas VII B SMP Kristen 2 Salatiga dengan jumlah subjek yaitu 4 siswa. Hasil penelitian ini menunjukkan bahwa terdapat 3 jenis kesalahan yang dilakukan, yaitu kesalahan konsep, kesalahan operasi, dan kesalahan ceroboh. Faktor-faktor penyebab siswa melakukan kesalahan yaitu kurang teliti dan belum menguasai materi.Abstract: This study aims to find out the types of mistakes made by seventh graders of SMP Kristen 2 Salatiga in working on the matter of addition and algebraic algebraism and to know the factors causing students to make mistakes. The research method is descriptive qualitative by analyzing student error from the given instrument. Samples taken are students of class VII B Christian SMP 2 Salatiga with the number of subjects that is 4 students. The results of this study indicate that there are 3 types of mistakes made, namely concept errors, operating errors, and careless errors. Factors causing students to make mistakes are less thorough and have not mastered the material.
Pengembangan Media Belajar Komik Terhadap Motivasi Belajar Siswa
Authors: Fadillah Ahmad 
Published: March 2019

Abstrak: Tujuan dari penelitian ini adalah untuk mengembangkan media belajar komik terhadap motivasi belajar siswa. Penelitian ini dilakukan di SMK Farmasi Tangerang 1 pada semester genap tahun ajaran 2016/2017. Metode yang digunakan adalah Research and Development (R&D). Produk yang dihasilkan adalah media belajar komik matematika. Analisis data yang dilakukan dalam penelitian ini adalah: kelayakan media belajar komik dan keterbacaan komik yang dilakukan oleh para pakar serta motivasi belajar siswa. Dari hasil analisis data diperoleh rata-rata persentase 83% yang artinya dapat disimpulkan bahwa media belajar komik layak digunakan untuk bahan ajar.Abstract: The purpose of this research is to develop a comic learning media on student learning motivation. This research was conducted in SMK Pharmacy Tangerang 1 in the even semester of academic year 2016/2017. The method used is Research and Development (R&D). The resulting product is a comic learning media mathematics. Data and analysis conducted in this research are: the feasibility of comic learning media and comic readability done by the experts as well as student learning motivation. Based on the data analysis results obtained average percentage of 83% which means it can be concluded that the comic learning media is worth using for teaching material.
Penerapan Pembelajaran Cooperative Integrated Reading and Composition Berbasis Inquiry untuk Meningkatkan Aktivitas dan Hasil Belajar Matematika Siswa Kelas IX-6 SMPN 1 Pujut
Authors: Nuramin Nuramin 
Published: March 2019

Abstrak: Pelaksanaan PTK dengan tujuan untuk mengetahui meningkatnya aktivitas dan hasil belajar matematika siswa kelas IX-6 di SMPN 1 Pujut tahun pelajaran 2017/2018 dengan penerapan pembelajaran cooperatif integrated reading and composition berbasis inquiri. Pengumpulan data dengan metode observasi, wawancara dan dokumentasi. Hasil siklus I skor rata-rata aktivitas belajar siswa 10,84 kategori aktif, nilai belajar siswa 66,25 dan ketuntasannya 79%. Siklus II aktivitas belajar siswa 12,68 kategori aktif, hasil belajar siswa 75,8 dan ketuntasannya 88%. Disimpulkan pelaksanaan pembelajaran cooperative integrated reading and composition berbasis inquiry pelajaran matematika dapat meningkatkan aktivitas dan hasil belajar siswa kelas IX-6 SMPN 1 PujutAbstract: Implementation of PTK with the aim to know the increased activity and learning outcomes of mathematics students of class IX-6 in SMPN 1 Pujut 2017/2018 academic year with the application of cooperative learning integrated reading and composition based inquiri. Data collection by observation method, interview and documentation. Result of cycle I average score of student activity activity 10,84 active category, student's learning score 66,25 and completeness 79%. Cycle II student learning activities 12.68 active categories, student learning outcomes 75.8 and completeness 88%. It is concluded that cooperative integrated reading and composition instruction based on inquiry of mathematics lesson can improve the activity and learning outcomes of students of class IX-6 SMPN 1 Pujut
Un nuevo mundo educativo: organización, funcionamiento y estructura. Una propuesta a la educación ecuatoriana
Authors: Navarrete Mendieta Ginger , Vera Gordillo María Elena , Idrovo Castro Katherine Janela 
Published: March 2019

IntroducciónEste artículo es una propuesta a la educación sobre el nuevo mundo educativo que deberían tener las instituciones educativas ecuatorianas en cuanto la organización, funcionamiento y estructura.Objetivoproponer soluciones innovadoras que contrarresten las desigualdades académicas.Materiales y métodosEs una investigación de tipo bibliográfico con método de recolección exploratorio, se realiza la investigación indagando sobre la educación igualitaria en el Ecuador Resultadospresente artículo surgen varios aspectos para mejorar el proceso de enseñanza – aprendizaje, con especial referencia a la propuesta de las cuatro pedagogías que deberían tener las instituciones educativas con el objetivo de lograr la excelencia académica. Conclusionesse propone el perfil idóneo que deberían tener los directivos de instituciones académicas a fin de lograr la calidad en los estándares de desempeño escolar.
Simulation Study for Optimization Design on Vertical Axis Wind Turbine blades
Authors: Pangemanan Arie S. , Siregar Houtman P. , Suryaman Maman 
Published: March 2019

In this article is conducted research to harness wind energy which is firstly generated by vehicle / truck that is runing on the public road highway. To take advantage of wind energy of the moving truck is designed, otherwise advisor had some ideas during the proposal defense change into fixed vertical axis wind turbine. The purpose of this evaluation study is to get optimization for the design blades of the vertical axis fixed wind turbine and finding the best blades installed and angle of attack will result in highest lift/drag ratio. While other test parameters such as air pressure, wind speed and others are held constant. In this evaluation study the angle of attack are used ranging begin from 45 and until 90 degrees. Evaluation result showed that the best blades install and angle of attack that gives the best lift/drag ratio is 5 blades at AoA ninety degree. Blades diameter of the designed wind turbine are 0.35 m and the number of blades which is the best in analytical of CFD techniques in the designed wind turbine are five pieces. The speed of the wind which is used to test the blades is 8 m/s on turbine rotation 80 rpm. The evaluation study has suceeded to do parametric optimization of the turbine blades. The optimised blades have been ready to re-designed assamble with another componens of the wind turbine to construct the prototype but there some problems / handicaps during the changes the prootype of turbine from movable to fixed wind turbine. The assambled vertical axial wind turbine postponed to further be tested in order to know its performance. CFD simulation has been performed with ten different VAWT designed models. Moving mesh and fluid flow simulation have been developed in CFD software FLUENT. The findings of these numerical simulations provided pressure contour, velocity contour, C D or C L
Evaluación del cambio del contenido de los constructos personales de una muestra depresiva que ha pasado por un proceso psicoterapéutico
Authors: Gonzalez Beatriz , Saúl Luis Angel 
Published: March 2019

El propósito de este estudio es realizar un análisis del contenido de los constructos personales, evaluados con la Técnica de Rejilla (TR), en personas con depresión (PD). Mediante la categorización de los constructos a través del Sistema de Categorías de Constructos Personales (SCCP), los resultados de un primer estudio indican que los aspectos emocionales son especialmente notorios para las PD. Con el objetivo de conocer el papel que la dimensión afectiva está desempeñando en el mantenimiento de la problemática depresiva se realiza un estudio longitudinal que nos permite explorar en qué medida estos constructos se modifican como resultado de un proceso terapéutico, y se realiza una comparación con una muestra no clínica (NC). Los principales resultados de este estudio muestran que no se producen cambios significativos entre la evaluación anterior y posterior al proceso terapéutico; sin embargo, si existen diferencias significativas entre la evaluación posterior al proceso terapéutico y el grupo NC. Concluimos, que la focalización de las PD en la dimensión afectiva, no parece desempeñar un papel muy relevante en el mantenimiento de la sintomatología depresiva, aunque sí se trataría de un estilo cognitivo que predispone a expresar este tipo de sintomatología.
GPs’ perspectives on colorectal cancer screening and their potential influence on FIT-positive patients: an exploratory qualitative study from a Dutch context
Authors: Bertels Lucinda , van der Heijden Sientje , Hoogsteyns Maartje , Dekker Evelien , van Asselt Kristel , van Weert Henk , Knottnerus Bart 
Published: March 2019

BackgroundIn the Dutch colorectal cancer (CRC) screening programme, individuals receive a faecal immunochemical test (FIT) to do at home. After a positive FIT result, a follow-up colonoscopy is recommended to identify CRC or advanced adenomas (AA). GPs may influence their patients’ decisions on adherence to follow-up by colonoscopy.AimTo explore GPs’ perspectives on the CRC screening programme and their potential influence on FIT-positive patients to follow up with the recommended colonoscopy.Design & settingSemi-structured interviews among GPs in Amsterdam, the Netherlands.MethodGPs were approached using purposive sampling. Analysis was performed on 11 interviews using open coding and constant comparison.ResultsAll interviewed GPs would recommend FIT-positive patients without obvious contraindications to adhere to a follow-up colonoscopy. If patients were likely to be distressed by a positive FIT result, most GPs described using reassurance strategies emphasising a low cancer probability. Most GPs stressed the probability of false-positive FIT results. Some described taking a positive screening result in CRC screening less seriously than one in breast cancer screening. Most GPs underestimated CRC and AA probabilities after a positive FIT result. When told the actual probabilities, some stated that this knowledge might change the way they would inform patients.ConclusionThese results imply that some of the interviewed GPs have too low a perception of the risk associated with a positive FIT result, which might influence their patients’ decision-making. Simply informing GPs about the actual rates of CRC and AA found in the screening programme might improve this risk perception.
Effectiveness of delivering integrated COPD care at public healthcare facilities: a cluster randomised trial in Pakistan
Authors: Khan Muhammad Amir , Khan Nida , Walley John D , Khan Muhammad Ahmar , Hicks Joseph , Ahmed Maqsood , Sheikh Faisal Imtiaz , Ali Muhammad , Manzoor Farooq , Khan Haroon Jehangir 
Published: March 2019

BackgroundIn Pakistan chronic obstructive pulmonary disease (COPD) prevalence is 2.1% in adults aged >40 years. Despite being a health policy focus, integrated COPD care has remained neglected, with wide variation in practice.AimTo assess whether enhanced care at public health facilities resulted in better control of COPD, treatment adherence, and smoking cessation.Design & settingA two-arm cluster randomised controlled trial was undertaken in 30 public health facilities (23 primary and 7 secondary), across three districts of Punjab, between October 2014–December 2016. Both arms had enhanced diagnosis and patient recording processes. Intervention facilities also had clinical care guides; drugs for COPD; patient education flipcharts; associated staff training; and mobile phone follow-up.MethodFacilities were randomised in a 1:1 ratio (sealed envelope independent lottery method), and 159 intervention and 154 control patients were recruited. The eligibility criteria were as follows: diagnosed with COPD, aged ≥18 years, and living in the catchment area. The primary outcome was change in BODE (Body mass index, airway Obstruction, Dyspnoea, Exercise capacity) index score from baseline to final follow-up visit. Staff and patients were not blinded.ResultsSix-month primary outcomes were available for 147/159 (92.5%) intervention and 141/154 (91.6%) control participants (all clusters). The primary outcome results cluster-level analysis were as follows: mean intervention outcome = -1.67 (95% confidence intervals [CI] = -2.18 to -1.16); mean control outcome = -0.66 (95% CI = -1.09 to -0.22); and covariate-adjusted mean intervention–control difference = -0.96 (95% CI = -1.49 to -0.44; P = 0.001).ConclusionThe findings of this trial and a separate process evaluation study support the scaling of this integrated COPD care package at primary and secondary level public health facilities in Pakistan and similar settings.
Observations of the Ultraviolet-bright Star Barnard 29 in the Globular Cluster M13 (NGC 6205)
Authors: Dixon William V. , Chayer Pierre , Reid I. N. , Miller Bertolami Marcelo Miguel 
Published: March 2019

Abstract
We have analyzed spectra from FUSE, COS, GHRS, and Keck HIRES of the UV-bright star Barnard 29 in M13 (NGC 6205). By comparing the photospheric abundances derived from multiple ionization states of C, N, O, Si, and S, we infer an effective temperature

= 21,400 ± 400 K. Balmer-line fits yield a surface gravity

= 3.10 ± 0.03. We derive photospheric abundances of He, C, N, O, Mg, Al, Si, P, S, Cl, Ar, Ti, Cr, Fe, Ni, and Ge. Barnard 29 exhibits an abundance pattern typical of the first-generation stars in M13, enhanced in oxygen and depleted in aluminum. An underabundance of C and an overabundance of N suggest that the star experienced nonconvective mixing on the red giant branch (RGB). We see no evidence of significant chemical evolution since the star left the RGB; in particular, it did not undergo third dredge-up. Previous workers found that the star’s far-UV spectra yield an iron abundance about 0.5 dex lower than its optical spectrum, but the iron abundances derived from all of our spectra are consistent with the cluster value. We attribute this difference to our use of model atmospheres without microturbulence, which is ruled out by careful fits to optical absorption features. We derive a mass M
*/M
⊙ = 0.45–0.55 and luminosity

= 3.26–3.35. Comparison with stellar-evolution models suggests that Barnard 29 evolved from a zero-age horizontal branch star of mass M
*/M
⊙ between 0.50 and 0.55, near the boundary between the extreme and blue horizontal branches.
Subpercent Photometry: Faint DA White Dwarf Spectrophotometric Standards for Astrophysical Observatories
Authors: Narayan Gautham , Matheson Thomas , Saha Abhijit , Axelrod Tim , Calamida Annalisa , Olszewski Edward , Claver Jenna , Mandel Kaisey S. , Bohlin Ralph C. , Holberg Jay B. , Deustua Susana , Rest Armin , Stubbs Christopher W. , Shanahan Clare E. , Vaz Amali L. , Zenteno Alfredo , Strampelli Giovanni , Hubeny Ivan , Points Sean , Sabbi Elena , Mackenty John 
Published: March 2019

Abstract
We have established a network of 19 faint (16.5 mag < V < 19 mag) northern and equatorial DA white dwarfs (WDs) as spectrophotometric standards for present and future wide-field observatories. Our analysis infers spectral energy distribution (SED) models for the stars that are tied to the three CALSPEC primary standards. Our SED models are consistent with panchromatic Hubble Space Telescope photometry to better than 1%. The excellent agreement between observations and models validates the use of non-LTE DA WD atmospheres extinguished by interstellar dust as accurate spectrophotometric references. Our standards are accessible from both hemispheres and suitable for ground- and space-based observatories covering the ultraviolet to the near-infrared. The high precision of these faint sources makes our network of standards ideally suited for any experiment that has very stringent requirements on flux calibration, such as studies of dark energy using the Large Synoptic Survey Telescope and the Wide-field Infrared Survey Telescope.
A Second Galaxy Missing Dark Matter in the NGC 1052 Group
Authors: van Dokkum Pieter , Danieli Shany , Abraham Roberto , Conroy Charlie , Romanowsky Aaron J. 
Published: March 2019

Abstract
The ultra-diffuse galaxy NGC1052-DF2 has a very low velocity dispersion, indicating that it has little or no dark matter. Here we report the discovery of a second galaxy in this class, residing in the same group. NGC1052-DF4 closely resembles NGC1052-DF2 in terms of its size, surface brightness, and morphology; has a similar distance of

; and also has a population of luminous globular clusters extending out to

from the center of the galaxy. Accurate radial velocities of the diffuse galaxy light and seven of the globular clusters were obtained with the Low Resolution Imaging Spectrograph on the Keck I telescope. The velocity of the diffuse light is identical to the median velocity of the clusters,

, and close to the central velocity of the NGC 1052 group. The rms spread of the globular cluster velocities is very small at

. Taking observational uncertainties into account we determine an intrinsic velocity dispersion of

, consistent with the expected value from the stars alone (

) and lower than expected from a standard NFW halo (

). We conclude that NGC1052-DF2 is not an isolated case but that a class of such objects exists. The origin of these large, faint galaxies with an excess of luminous globular clusters and an apparent lack of dark matter is, at present, not understood.
Integrin β1 Promotes the Interaction of Murine IgG3 with Effector Cells
Authors: Hawk Carolyn Saylor , Coelho Carolina , Oliveira Diane Sthefany Lima de , Paredes Verenice , Albuquerque Patrícia , Bocca Anamélia Lorenzetti , Correa dos Santos Ananésia , Rusakova Victoria , Holemon Heather , Silva-Pereira Ildinete , Felipe Maria Sueli Soares , Yagita Hideo , Nicola André Moraes , Casadevall Arturo 
Published: March 2019

Abstract
Abs exert several of their effector functions by binding to cell surface receptors. For murine IgG3 (mIgG3), the identity of its receptors (and the very existence of a receptor) is still under debate, as not all mIgG3 functions can be explained by interaction with FcγRI. This implies the existence of an alternate receptor, whose identity we sought to pinpoint. We found that blockage of integrin β1 selectively hampered binding of mIgG3 to macrophages and mIgG3-mediated phagocytosis. Manganese, an integrin activator, increased mIgG3 binding to macrophages. Blockage of FcγRI or Itgb1 inhibited binding of different mIgG3 Abs to variable extents. Our results are consistent with the notion that Itgb1 functions as part of an IgG receptor complex. Given the more ancient origin of integrins in comparison with FcγR, this observation could have far-ranging implications for our understanding of the evolution of Ab-mediated immunity as well as in immunity to microorganisms, pathogenesis of autoimmune diseases, and Ab engineering.