30 research outputs found
Karakter Fisiologi Merremia peltata (L.) Merrill Asal Taman Nasional Bukit Barisan Selatan Lampung
No full textMerremia peltata menginvasi Wilayah Taman Nasional Bukit Barisan Selatan (TNBBS) di Propinsi Lampung lebih dari 7000 ha. Invasi ini menurunkan dan mengganggu satwa yang dilindungi seperti harimau, gajah, dan badak sumatera. Adanya invasi M. peltata juga mampu mengubah struktur dan komposisi spesies dalam ekosistem alami. Spesies lain menjadi tidak mampu bersaing dengan M. peltata, keanekaragaman hayati di daerah tersebut menurun, dan akhirnya terancam kepunahan. Penelitian ini bertujuan untuk menilai karakter fisiologi M. peltata (L.) Merrill asal TNBBS, Lampung yang menunjang keberhasilannya untuk menginvasi suatu ekosistem. Rancangan percobaan yang digunakan adalah rancangan petak terpisah yang terdiri dari dua faktor. Faktor pertama (petak utama) adalah naungan paranet terdiri dari 3 taraf yaitu naungan paranet 0 %, 55 %, dan 90 %. Faktor kedua (anak petak) adalah jenis tanaman terdiri dari 3 taraf yaitu Merremia peltata, Mikania micrantha, dan Ipomoea batatas. Percobaan diulang sebanyak tiga kali. Perbanyakan M. peltata berhasil dilakukan dengan biji. Setelah bibit M. peltata memiliki tinggi 29.5 cm kemudian bibit diadaptasikan selama 3 minggu dalam media tanam. Selanjutnya diberi perlakuan naungan paranet. Parameter yang diamati meliputi laju fiksasi karbon atau carbon fixation rate (CFR), laju pertumbuhan relatif atau relative growth rate (RGR), nisbah bobot daun atau leaf weight ratio (LWR), luas daun spesifik atau specific leaf area (SLA), nisbah luas daun atau leaf area ratio (LAR), laju asimilasi bersih atau net assimilation rate (NAR), nitrogen daun (N daun), dan efisiensi penggunaan nitrogen fotosintesis atau Photosynthetics nitrogen use efficiency (PNUE). Pengukuran dan pengambilan data dilakukan pada 0 dan 90 hari setelah perlakuan. Carbon fixation rate (CFR), RGR, LWR, NAR, N daun, dan PNUE M. peltata meningkat seiring dengan menurunnya naungan atau intensitas cahaya tinggi. Relative growth rate M. peltata pada naungan 0 % dan 55 % (intensitas cahaya tinggi dan sedang) terjadi karena ada kontribusi nilai NAR dan LAR yang tinggi. Nilai NAR dan LAR M. peltata berada diantara M. micrantha dan I. batatas. Hasil ini menunjukkan bahwa RGR M. peltata dipengaruhi dan dikontribusi oleh indeks fisiologis dan morfologis yang tinggi. PNUE M. peltata tidak berbeda dengan M. micrantha di naungan 0 % yang menunjukkan bahwa hara dan fotosintat dialokasikan lebih banyak untuk sintesis daun. Kondisi ini memberi peluang M. peltata untuk menjadi invasif. Leaf area ratio yang tinggi pada perlakuan naungan sedang disebabkan karena adanya alokasi hara dan fotosintat ke daun sehingga sintesis daun menjadi tinggi. Relative growth rate (RGR), NAR, dan PNUE M. peltata tertinggi di antara spesies yang diuji pada naungan 90 % (intensitas cahaya rendah). Hasil ini menunjukkan bahwa indeks fisiologis M. peltata yang tinggi, alokasi hara dan fotosintat yang cukup untuk daun, dan sintesis daun-daun yang lebar dan tipis untuk mendapatkan cahaya yang lebih besar, semuanya mempengaruhi RGR
THE INFLUENCE OF THE ILL-STRUCTURED PROBLEM BASED LEARNING MODEL ON STUDENTS' SCIENCE LITERACY ABILITY IN ENVIRONMENTAL CHANGE CONCEPT
Get PDFProblem-based learning (PBL) is an effective pedagogy in increasing scientific literacy among students, and this strategy helps students acquire and apply knowledge and develop higher-order thinking skills that prioritize problems obtained from real life.This study aims to investigate the influence of ill-structured type problem-based learning (PBL) model on students' science literacy skills in environmental change concept. The research was conducted at MAN 1 Pandeglang in the 2023/2024 school year using a quasi-experimental method using a non-equivalent control group design. Two classes were selected as research samples (experimental class and control class) through simple random sampling technique. Data analysis using independent samples t-test with the help of IBM SPSS Statistics 26 showed that the value of sig. (2-tailed) of 0.004, which is below the significance level of α = 0.05. These results show that the use of ill-structured type problem-based learning models has a significant influence on improving students' science literacy skills. Thus, this learning model is effective in improving science literacy skills on the concept of environmental chang
Physiological Character of Merremia peltata (L.) Merrill from Bukit Barisan Selatan National Park Lampung
Get PDFMerremia peltata invaded the vegetation of Bukit Barisan Selatan National Park (BBSNP) in Lampung Province, Indonesia. In this site, the invasion has reached more than 7000 hectares. Therefore, it is necessary to asses the physiological characters of M. peltata as an invasive plant species under different shading level in BBSNP. The experiment design of this study was split block design with factorial. The first factor (main plot) was shading treatment that consisted of 0, 55, and 90% shades. The second factor (sub plot) was 3 species of plant that consisted of M. peltata, Mikania micrantha, and Ipomoea batatas. Each experimental unit was replicated 3 times. The result showed that the physiological characters such as carbon fixation rate (CFR), relative growth rate (RGR), leaf area ratio (LAR), photosynthetics nitrogen use efficiency (PNUE) of M. peltata higher than the other two species and interconnected. Physiological characters associated with RGR can be supporting the invasiveness of M. peltata, especially in BBSNP. Supporting invasiveness with resources allocation to leaves biosynthesis and relatively efficient nitrogen were used for photosynthesis
The effect of problem solving learning model based just in time teaching (JiTT) on science process skills (SPS) on structure and function of plant tissue concept
Get PDFThe purpose of this study was to determine the effect of Problem Solving learning model based Just in Time Teaching (JiTT) on students' science process skills (SPS) on structure and function of plant tissue concept. This research was conducted at State Senior High School in South Tangerang .The research conducted using the quasi-experimental with Nonequivalent pretest-Postest Control Group Design. The samples of this study were 34 students for experimental group and 34 students for the control group. Data was obtained using a process skill test instrument (essai type) that has been tested for its validity and reliability. Result of data analysis by ANACOVA, show that there were significant difference of postest between experiment and control group, by controlling the pretest score (F = 4.958; p <0.05). Thus, the problem-solving learning based on JiTT proved to improve students’ SPS. The contribution of this treatment in improving the students’ SPS was 7.2%. This shows that there was effect of problem solving model based JiTT on students’ SPS on the Structure and function of plant tissue concept.</jats:p
PENGARUH PEMBELAJARAN MODEL ADVANCE ORGANIZER TERHADAP HASIL BELAJAR BIOLOGI SISWA PADA KONSEP PROTISTA
No full textThis research purposed to know the influence of using advance organizer model to students’ biology achievement in protists concept. This research was used quasi experiment method with pretest-posttest control group design. The data analysis was used t-test, from the result of calculating mean differentiation of posttest both groups, obtained the value of t-count was equal to 3,087, while t-table at the level of significant 5% with degree of freedom (df) = 78 that was equal to 1,67. So, it can be said that t-count > t-table that means the alternative hypothesis (Ha) was accepted and the zero hypothesis (H0) was refused. It showed that there was influence of using advance organizer model to students’ biology achievement in protists concept.</p
THE EFFECT OF PROBLEM SOLVING LEARNING MODEL BASED JUST IN TIME TEACHING (JiTT) ON SCIENCE PROCESS SKILLS (SPS) ON STRUCTURE AND FUNCTION OF PLANT TISSUE CONCEPT
No full textThe purpose of this study was to determine the effect of Problem Solving learning model based Just in Time Teaching (JiTT) on students' science process skills (SPS) on structure and function of plant tissue concept. This research was conducted at State Senior High School in South Tangerang .The research conducted using the quasi-experimental with Nonequivalent pretest-Postest Control Group Design. The samples of this study were 34 students for experimental group and 34 students for the control group. Data was obtained using a process skill test instrument (essai type) that has been tested for its validity and reliability. Result of data analysis by ANACOVA, show that there were significant difference of postest between experiment and control group, by controlling the pretest score (F = 4.958; p <0.05). Thus, the problem-solving learning based on JiTT proved to improve students’ SPS. The contribution of this treatment in improving the students’ SPS was 7.2%. This shows that there was effect of problem solving model based JiTT on students’ SPS on the Structure and function of plant tissue concept
Increasing Scientific Reasoning Through Discussion of Virus Issues in Scientific and Socioscientific
No full textPETA KONSEP DIPADU DENGAN CROSSWORD PUZZLE: PENGARUHNYA TERHADAP RETENSI PESERTA DIDIK PADA KONSEP SISTEM GERAK
Get PDFThe use of concept maps combined with a crossword puzzle (TTS) can affect the retention of students in the concept of motion system at SMA Negeri 29 Jakarta. Research methods with quasi-experimental Pretest-Posttest Control Group Research Design and purposive sampling. The research sample totaled 36 students for each group that is the experimental group 1 (E1) by using concept maps combined with TTS, experimental group 2 (E2) by using concept maps, and for control group by using the summary technique. The research instrument in the form of multiple choice objective test consist of 25 questions that have been tested for validity and reliability. The results of the three groups retention data analysed using One Way Anova at significance level α = 0.05. Then retest percentage yield value reached 100.29 at experimental group 1 (E1) with a very good category and differ significantly with E2 (97,06) and control group (94,81).Kata kunci: concept maps, crossword puzzle (TTS), retention, learning outcome, motion system
PENGARUH PEMBELAJARAN MODEL ADVANCE ORGANIZER TERHADAP HASIL BELAJAR BIOLOGI SISWA PADA KONSEP PROTISTA
No full textThis research purposed to know the influence of using advance organizer model to students’ biology achievement in protists concept. This research was used quasi experiment method with pretest-posttest control group design. The data analysis was used t-test, from the result of calculating mean differentiation of posttest both groups, obtained the value of t-count was equal to 3,087, while t-table at the level of significant 5% with degree of freedom (df) = 78 that was equal to 1,67. So, it can be said that t-count > t-table that means the alternative hypothesis (Ha) was accepted and the zero hypothesis (H0) was refused. It showed that there was influence of using advance organizer model to students’ biology achievement in protists concept
MineDojo Internet Knowledge Base (Wiki)
No full textProject website: minedojo.org
Paper: arxiv.org/abs/2206.08853
GitHub: github.com/MineDojo/MineDojo
The Minecraft Wiki pages cover almost every aspect of the game mechanics, and supply a rich source of unstructured knowledge in multimodal tables, recipes, illustrations, and step-by-step tutorials. We scrape 6,735 pages that interleave text, images, tables, and diagrams. To preserve the layout information, we also save the screenshots of entire pages and extract bounding boxes of the visual elements.
There are two files in our Wiki knowledge base.
wiki_samples.zip: A sample version of the full knowledge base (10 pages).
wiki_full.zip: The full knowledge base (6,735 pages).
Cite Us
@article{fan2022minedojo,
title = {MineDojo: Building Open-Ended Embodied Agents with Internet-Scale Knowledge},
author = {Linxi Fan and Guanzhi Wang and Yunfan Jiang and Ajay Mandlekar and Yuncong Yang and Haoyi Zhu and Andrew Tang and De-An Huang and Yuke Zhu and Anima Anandkumar},
year = {2022},
journal = {arXiv preprint arXiv: Arxiv-2206.08853}
