bluuebunny/crossref_metadata_2025_split huggingface dataset:
Discovery Learning: Pengaruhnya Terhadap Hasil Belajar
Authors: Wati Yulisna , Sartiman Sartiman 
Published: July 2019

Abstract: This study aims to determine wheter there is influence of learning Discovery Learning model to the learning outcomes of class X students in MAN 1 Krui Pesisir Barat. The research that the outhors do is a tipe of research Quasy Experimentals Design, which involves two class groups of experimental class and control class, which the number of students each class of 31 learners. Data collection is obtained by using the test instrument, the test instrument of learning outcomes in the form of multiple choice that is in the form of pretest and postest. Obtained the results of research that there is influence on learning outcomes of learners after using the model of Learning Discovery. T test obtained thitung > ttabel that is 2,593 > 2,000 with significant level α = 0,05. So H1 is accepted, indicating that there is influence of Discovery Learning model to the learning result of class X students in MAN 1 Krui Pesisir BaratAbstrak: Penelitian ini bertujuan untuk mengetahui apakah terdapat pengaruh model pembelajaran Discovery Learning terhadap hasil belajar peserta didik kelas X di MAN 1 Krui Pesisir Barat. Penelitian yang penulis lakukan merupakan jenis penelitian Quasi Eksperimen Design, yang melibatkan dua kelompok kelas yaitu kelas eksperimen dan kelas kontrol, dengan jumlah peserta didik pada masing-masing kelas yaitu 31 peserta didik. Pengumpulan data diperoleh dengan menggunakan instrumen tes, instrumen tes hasil belajar berbentuk pilihan ganda yaitu berupa pretest dan postest. Diperoleh hasil penelitian bahwa terdapat pengaruh terhadap hasil belajar peserta didik setelah menggunakan model pembelajaran Discovery Learning. Uji t diperoleh thitung > ttabel yaitu 2,593 > 2,000 dengan taraf signifikan α = 0,05. Jadi H1 diterima, yang menandakan bahwa terdapat pengaruh model pembelajaran Discovery Learning terhadap hasil belajar peserta didik kelas X di MAN 1 Krui Pesisir Barat.
Kelayakan Media Pembelajaran Prezi Menggunakan Pendekatan Saintifik
Authors: Ningsih Diyah Ayu Setia , Komikesari Happy 
Published: July 2019

Abstract: This research aims to know the feasibility of prezi-based learning media using scientific approach on the material of SMP / MTs caloric level. This research uses research and development method by using model from Borg & Gall which is adapted from Sugiono development model. The data of this study were obtained from questionnaire responses of educators and learners, questionnaire validation of material experts and media experts. The type of data produced is qualitative data which is analyzed by guidance criteria of assessment category to determine product quality. Researchers produce a product in the form of prezi-based learning media using scientific approach on the material of SMP / MTs caloric level. Based on the assessment of material experts get the percentage of 84.13% with very decent category, the assessment of media experts get the percentage of 84.62% with very decent category while the response of the students of the three schools received an average percentage of 84.8% in very decent category . Based on the assessment by material experts, media experts, educators and students' responses, it can be concluded that prezi-based learning media using scientific approach on caloric materials of junior high school / MTs is suitable for learning media. Abstrak: Penelitian ini bertujuan untuk; Mengetahui kelayakan media pembelajaran berbasis prezimenggunakan pendekatan saintifik pada materi kalor tingkat SMP/MTs. Penelitian ini menggunakan metode penelitian dan pengembangan (Research and Development) dengan menggunakan model dari Borg & Gall yang diadaptasi dari model pengembangan Sugiono. Data penelitian ini diperoleh dari angket respon pendidik dan peserta didik, angket validasi ahli materi dan ahli media. Jenis data yang dihasilkan adalah data kualitatif yang dianalisis dengan pedoman kriteria kategori penilaian untuk menentukan kualitas produk. Peneliti menghasilkan suatu produk berupa media pembelajaran berbasis prezi menggunakan pendekatan saintifik pada materi kalor tingkat SMP/MTs. Berdasarkan penilaian ahli materi mendapatkan persentase 84,13% dengan kategori sangat layak, penilaian ahli media mendapatkan persentase 84,62% dengan kategori sangat layaksedangkan respon peserta didik ketiga sekolah tersebut memperoleh nilai presentase rata-rata sebesar 84,8 % dalam kategori sangat layak. Berdasarkan penilaian oleh ahli materi, ahli media, pendidik dan respon peserta didik maka dapat disimpulkan bahwa media pembelajaran berbasis prezi menggunakan pendekatan saintifik pada materi kalor tingkatSMP/MTs layak digunakan sebagai media pembelajaran
Pengembangan Scrapbook Sebagai Media Pembelajaran Fisika
Authors: Sari Liawati Permata , Patimah Siti , Yusandika Ajo Dian 
Published: July 2019

Abstract: This study aims to determine the feasibility of learning media Scrapbook on Solar System materials, as well as to know the response of teachers and learners to the development of learning media Scrapbook on Solar System materia ls.This research is a type of research and development (R & D). The steps of research and development are guided by Brog and Gall model with seven stages. This research was conducted at UIN Raden Intan Lampung, SMPN 21 Bandar Lampung, SMPN 13 Bandar Lampung, and Mts Muhammadiyah Bandar Lampung. The instrument of data collection used is questionnaire or questionnaire. Technique of collecting data using questionnaire with Likert scale. Data analysis techniques used are qualitative descriptive analysis techniques and descriptive statistical analysis. Media feasibility results based on the assessment of media experts and material experts are included in very good criteria. As well as the outcomes of teacher and learner responses through small group trials and field trials were assessed with very good criteria. Scrapbook learning media on the material of the Solar System as a whole received an assessment that is included in the criteria very well, so it is worthy to be used as a medium of learning.Abstrak: Penelitian ini bertujuan untuk mengetahui kelayakan media pembelajaran Scrapbook pada materi Tata Surya, serta mengetahui respon guru dan peserta didik terhadap pengembangan media pembelajaran Scrapbook pada materi Tata Surya. Penelitian ini merupakan jenis penelitian dan pengembangan (R&D). Langkah-langkah penelitian dan pengembangan berpedoman pada model Brog and Gall dengan tujuh tahapan. Penelitian ini dilaksanakan di UIN Raden Intan Lampung, SMPN 21 Bandar Lampung, SMPN 13 Bandar Lampung, dan Mts Muhammadiyah Bandar Lampung. Instrumen pengumpulan data yang digunakan adalah angket atau kuesioner. Teknik pengumpulan data menggunakan angket dengan skala Likert. Teknik analisis data yang digunakan yaitu teknik analisis deskriptif kualitatif dan analisis statistik deskriptif. Hasil kelayakan media berdasarkan penilaian ahli media dan ahli materi termasuk dalam kriteria sangat baik. Serta hasil respon guru dan peserta didik melalui uji coba kelompok kecil dan uji coba lapangan memperoleh penilaian dengan kriteria sangat baik. Media pembelajaran Scrapbook pada materi Tata Surya secara keseluruhan memperoleh penilaian yang termasuk dalam kriteria sangat baik, sehingga layak digunakan sebagai media pembelajaran.
Pengembangan Buku IPA Berbasis Kearifal Lokal Jambi pada Materi Tekanan serta Getaran dan Gelombang
Authors: Jufrida Jufrida , Basuki Fibrika Rahmat , Xena Anta , Pasminingsih Pretty 
Published: July 2019

Abstract: This study aims to develop science books based on Jambi local wisdom and improve student learning motivation. This research was a research and development using ADDIE model. The subjects were material experts, media experts and class VIII students of SMPN 1 Muaro Jambi, totaling 30 students. The instruments used in this study were observation sheets, questionnaire needs, material and media validation sheets and student motivation questionnaires. Qualitative data were analyzed descriptively and quantitative data were analyzed using descriptive statistics. This study produced a science book based on Jambi local wisdom about the pressure and vibration and waves. Local wisdom was used as a context to explore scientific concepts. The results of the material expert validation obtained an average score of 4.5 with the category "very good" and the media expert was 4.65 with the category "very good". The results of field trials show that science books based on Jambi local wisdom can increase students' learning motivation with an average score of 4.1 (good category).Abstrak: Penelitian ini bertujuan untuk mengembangkan buku IPA berbasis kearifan lokal Jambi serta meningkatkan motivasi belajar siswa. Penelitian ini merupakan penelitian pengembangan. Subjek penelitian adalah ahli materi, ahli media serta siswa kelas VIII di SMPN 1 Muaro Jambi yang berjumlah 30 siswa. Instrumen yang digunakan dalam penelitian ini lembar observasi, angket kebutuhan lembar validasi ahli materi dan media serta angket motivasi siswa. Data kualitatif dianalisis secaradeskriptif dan data kuantitatif dianalisis menggunakan statistic deskriptif. Penelitian ini mengahsilkan buku IPA berbasis kearifan lokal Jambi meteri tekanan zat, serta getaran dan gelombang. Kearifan lokal dijadikan sebagai konteks untuk menggali konsep sains. Hasil validasi ahli materi diperoleh skor rata-rata 4,5 dengan kategori “sangat baik” dan ahli media adalah 4,65 dengan kategori “sangat baik”. Hasil ujicoba lapangan menunjukkan bahwa buku IPA berbasis kearifan local jambi dapat meningkatkan motivasi belajar siswa dengan skor rata-rata 4,1 (kategori baik).
Pembelajaran SETS (Science, Environment, Technology, Society): Pengaruhnya pada Keterampilan Proses Sains
Authors: Zahra Melta , Wati Widya , Makbuloh Deden 
Published: July 2019

Abstract: This study aims to determine the effect of learning SETS (Science, Environment, Technology, Society) to the science process skills student. To see student process skilss researcher using test and observations. This Study included a type of quasi Ekperimental research. This study uses experimental class and control class. Sampling technique used cluster samplin. To know the difference of mastery science process skills experimental class and control class do t-test by the formula Polled varians. Analysis results showing thitung = 11,1223 while ttabel = 1,9908 with a significant level 0,05% so thitung > ttabel. H1 be accepted, there is influence of learning SETS (Science, Environment, Technology, Society) to the science process skills. It can be concluded that there is influence of learning SETS (Science, Environment, Technology, Society) to the science process skills.Abstrak: Penelitian ini bertujuan untuk mengetahui Pengaruh pembelajaran SETS (Science, Environment, Technology, Society) terhadap keterampilan proses sains peserta didik. Untuk melihat penguasan keterampilan proses peserta didik peneliti mengunakan tes dan observasi. Penelitian ini termasuk jenis penelitian quasi eksperimen. Penelitian ini menggunakan kelas eksperimen dan kelas kontrol. Teknik pengambilan sampel yang digunakan cluster sampling. Untuk mengetahui perbedaan penguasaan keterampilan proses sains expekelas kontrol dan kelas eksperimen dilakukan uji-t dengan rumus Polled Varians. Hasil analisis menunjukan thitung = 11,1223 sedangkan ttabel = 1,9908 dengan taraf signifikan 0,05% sehingga thitung > ttabel. H1 diterima, terdapat pengaruh model Pembelajaran SETS (Science, Environment, Technology and Society) terhadap keterampilan proses sains. sehungga Dapat simpulkan bahwa terdapat pengaruh model pembelajaran SETS dalam meningkatkan keterampilan proses sains peserta didik.
The Influence of Practicum-Based Outdoor Inquiry Model on Science Process Skills in Learning Physics
Authors: Wardani Yeni Ristya , Mundilarto Mundilarto , Jumadi Jumadi , Wilujeng Insih , Kuswanto Heru , Astuti Dwi Puji 
Published: July 2019

The main purpose of this study is to find out the influence of practicum-based outdoor inquiry model on science process skills. Quasi-experiment design was employed as the research method by Matching Only Post-test Control Group. The research sample was taken using a cluster sampling technique. The samples consisted of experimental class (XI MIA 1) in a total of 25 students treated with practicum-based outdoor inquiry model. The control class (XI MIA 3) consisted of 29 students treated with direct instruction model. In collecting the data, essay test was used in the form of worksheets containing the aspect of science process skills of formulating hypotheses, designing experiment, interpreting data into tables, and drawing a conclusion (inferring). The study results demonstrate that practicum-based outdoor inquiry model was effective in improving the science process skills. It was shown in p-value (significant) of 0.00. The implication of this study is the need to design a practicum-based outdoor inquiry model by noticing what skills are going to improve by means of more varied outdoor activities.
Improvement QCM Quality By Polystyrene Coating and Bovine Serum Albumin as Immobilization Agent
Authors: Didik Lalu A. , Yahdi Yahdi , Masruroh Masruroh 
Published: July 2019

Polystyrene (PS) thin film with various concentration of mass (1%, 3%, and 5%) has been deposited onto Quartz Crystal Microbalance (QCM) surface by a spin coating method. The purpose of this research is the improvement of Bovine Serum Albumin (BSA) immobilization into the QCM surface. The QCM resonance frequency has been investigated by means of Impedance Analyzer. The film thickness was calculated by the Sauerbrey equation. The surface roughness of the PS layer was observed by noncontact Topography Measuring System (TMS-1200). Calculation result using a Sauerbrey equation shows the thickness of the PS layer increases with the increasing PS concentration. The QCM/PS with 1% and 5% concentration of mass has rougher morphology and more frequency shifts caused by BSA injection compared to 3% concentration of PS.
Knowledge Level and Self-Confidence on The Computational Thinking Skills Among Science Teacher Candidates
Authors: Rahayu Titik , Osman Kamisah 
Published: July 2019

The trending topic in today's education is computational thinking skills which are used to help to solve complicated problems easier. This study aims to identify the level of knowledge and self-confidence of science teacher candidates (physics and biology) on computational thinking skills. The survey research design was used through a mixed-method approach by combining quantitative and qualitative approaches. The quantitative study involved 1016 randomly selected groups of science teachers while in the qualitative study, eight science teachers were chosen based on the scores obtained from the quantitative study. The questionnaire was used as a quantitative data collecting technique to analyze descriptive statistics. Then, an interview was used as the qualitative data collecting technique and was analyzed through theme creation. The findings show that science teacher candidates have a high level of knowledge and self-confidence. The implication of this study is very important for teacher candidates because computational thinking can help to facilitate problems solving in everyday life. Teacher candidates need to be given knowledge and understanding of computational thinking skills, to have readiness and self-confidence in facing the challenges of the learning in the 21st-century
Evolution of Physicochemical Structure of Waste Cotton Fiber (Hydrochar) During Hydrothermal Carbonation
Authors: Sheng Shi , Meiling Zhang , Suying Zhang , Wensheng Hou , Zhifeng Yan 
Published: July 2019

Abstract
To study the hydrothermal behavior of cotton fiber, the carbonization process and structural evolution of discarded or waste cotton fiber (WCF) under hydrothermal conditions were investigated using microcrystalline cellulose (MCC), and glucose was used as a model compound. Results showed that high temperature was beneficial for the hydrolysis of discarded cotton fiber, and the yield of sugar was 4.5%, which was lower than that of MCC (6.51%). WCF and MCC were carbonized at 240–~260°C and 220–~240°C, respectively, whereas the carbonization temperature of glucose was lower than 220°C. The C/O ratios of WCF and glucose hydrothermal products were 5.79 and 5.85, respectively. The three kinds of hydrothermal carbonization products had similar crystal structures and oxygen-containing functional groups. The carbonized products of WCF contained many irregular particles, while the main products of glucose carbonization were 0.5-mm-sized carbon microspheres (CMSs). Results showed that glucose was an important intermediate in WCF carbonization and that there were two main pathways of hydrothermal carbonization of cotton fibers: some cotton fibers were completely hydrolyzed into glucose accompanied by nucleation and then the growth of CMSs. For the other part, the glucose ring of the oligosaccharide, formed by the incomplete hydrolysis of cotton fibers under hydrothermal conditions of high temperature and pressure, breaks and then forms particulate matter.
About Supergraphs. Part III
Authors: Koch Sebastian 
Published: July 2019

Summary
The previous articles [5] and [6] introduced formalizations of the step-by-step operations we use to construct finite graphs by hand. That implicitly showed that any finite graph can be constructed from the trivial edgeless graph K
1 by applying a finite sequence of these basic operations. In this article that claim is proven explicitly with Mizar[4].
New data on the ecological peculiarities and the distribution in Bulgaria of the vulnerable habitat F3.1d Balkan-Anatolian submontane genistoid scrub from the European Red List of Habitats
Authors: Kunev Georgi , Tzonev Rossen 
Published: July 2019

Abstract
The study presents new data on the habitat dominated by the species complex of Genista lydia/G. rumelica in Bulgaria. It is based on 129 phytocoenological relevés and provides information on the chorology, ecology and floristic structure of these communities. This habitat type occupies substrates composed by different volcanic rocks. The floristic structure is very rich in species. The phytogeographical relationships with the East Mediterranean region are considerable, which is proved by the high occurrence of floristic elements with Mediterranean or sub-Mediterranean origin. The plant life-forms analysis demonstrates that the therophytes, geophytes and chamephytes prevail in their floristic structure, which is also typical for the shrub communities in this region. During the field study this vegetation type has been mapped and its total area of occupancy has been calculated. For a first time it is proposed this habitat to be divided into three habitat sub-types due to the established differences in the environmental factors. Some recommendations have been proposed on the conservation management and also complements on the habitat‘s descriptions in EUNIS habitat classification.
Species delimitation and inter-specific gene flow in Tamarix L. (Tamaricaceae)
Authors: Sheidai Masoud , Shagholi Tahmineh , Keshavarzi Maryam , Koohdar Fahimeh , Ijbari Habibollah 
Published: July 2019

Abstract
Tamarix L. play important role in preventing deforestation in Iran. Tamarix species exhibit wide range of morphological variation therefore, the species delimitation become difficult. This is further complicated due to similarity of morphological characters in closely related species and the occurrence of inter-specific hybridization. The present study was performed to identify Tamarix species and their potential hybrids in Semnan Province of Iran. We used ITS and ISSR and 42 morphological characters for our investigation. Molecular phylogeny of the studied species and their relationship was not in agreement with the species tree of morphological characters and with taxonomic treatment of the genus. HGT tree of ITS and morphological data obtained revealed the occurrence of inter-specific hybridization or introgression between Tamarix species.
Summer fire in steppe habitats: long-term effects on vegetation and autumnal assemblages of cursorial arthropods
Authors: Polchaninova Nina , Savchenko Galina , Ronkin Vladimir , Drogvalenko Aleksandr , Putchkov Alexandr 
Published: July 2019

Abstract
Being an essential driving factor in dry grassland ecosystems, uncontrolled fires can cause damage to isolated natural areas. We investigated a case of a small-scale mid-summer fire in an abandoned steppe pasture in northeastern Ukraine and focused on the post-fire recovery of arthropod assemblages (mainly spiders and beetles) and vegetation pattern. The living cover of vascular plants recovered in a year, while the cover of mosses and litter remained sparse for four years. The burnt site was colonised by mobile arthropods occurring in surrounding grasslands. The fire had no significant impact on arthropod diversity or abundance, but changed their assemblage structure, namely dominant complexes and trophic guild ratio. The proportion of phytophages reduced, while that of omnivores increased. The fire destroyed the variety of the arthropod assemblages created by the patchiness of vegetation cover. In the post-fire stage they were more similar to each other than at the burnt plot in the pre- and post-fire period. Spider assemblages tended to recover their pre-fire state, while beetle assemblages retained significant differences during the entire study period.
Iron age burial mounds as refugia for steppe specialist plants and invertebrates – case study from the Zsolca mounds (NE Hungary)
Authors: Tóth Csaba Albert , Deák Balázs , Nyilas István , Bertalan László , Valkó Orsolya , Novák Tibor József 
Published: July 2019

Abstract
Prehistoric mounds of the Great Hungarian Plain often function as refuges for relic loess steppe vegetation and their associated fauna. The Zsolca mounds are a typical example of kurgans acting as refuges, and even though they are surrounded by agricultural land, they harbour a species rich loess grassland with an area of 0.8 ha. With a detailed field survey of their geomorphology, soil, flora and fauna, we describe the most relevant attributes of the mounds regarding their maintenance as valuable grassland habitats. We recorded 104 vascular plant species, including seven species that are protected in Hungary and two species (Echium russicum and Pulsatilla grandis) listed in the IUCN Red List and the Habitats Directive. The negative effect of the surrounding cropland was detectable in a three-metre wide zone next to the mound edge, where the naturalness of the vegetation was lower, and the frequency of weeds, ruderal species and crop plants was higher than in the central zone. The ancient man-made mounds harboured dry and warm habitats on the southern slope, while the northern slopes had higher biodiversity, due to the balanced water supplies. Both microhabitats had different assemblages of ground-dwelling invertebrates.