Adaptasi Dan Stabilitas Hasil Galur-galur Aromatik Padi Sawah Di Sumatera Utara

This research was aimed to describe the yield stability and growth adaptation of elite lines of aromatic rice in rice production centers of North Sumatra. The experiments were conducted at 10 sites during dry season (DS) 2001 and DS 2002. Research materials consisted of 12 elite lines introduced from IRRI with IR64 as check variety. The treatments were arranged in a randomized block design (RBD) with three replications. Stability analysis was performed using methods of Eberhart and Russell, Finlay and Wilkinson, and Francis and Kanennberg. The results showed that the interaction of genotype x environment effect was very significant, indicating the presence of specific line adaptation on a particular environment. Genotypes which had the highest average yield were not always stable genotypes, as was shown by IR71137-49-1-2 which was more suitable to the sub-optimum environment. Lines IR71143-223-3-2-2-3, IR71146-97-1-2-1-3, IR65610-24-3-6-3-2-3, IR66696-49-1-2, IR71146-407-2-1-2-1, IR71146-122-1-1-2-1 were considered as stable genotypes according to the three analysis methods and each line showed high average yield. Those genotypes are suggested to be planted in the high productivity environments in order to obtain its optimum genetic expressivity on grain yiel

The Application of Interactive Comprehensible Written Input-Output Instruction for Teaching Writing

This study was aimed at finding out whether there was a difference on students\u27 writing ability in general as well as students\u27 aspects of writing in particular and exploringwhether there would be a difference on students\u27 prediction of Narrative and Anecdote Text as a part of Interactive Comprehensible Written Input-Output Instruction.The study involved 36 MathematicsEducation students in the first semester of academic year 2016/2017. To collect the data, the researcher administered writing testsand collected students\u27 writing drafts. Then, the data were analyzed both quantitatively and qualitatively. The results showed there was a significant difference on both students\u27 writing ability and aspects of writing after the application of this instruction. Then, there was also a difference on their prediction of two texts that it was easier for the students to predict the continuation of the story in Narrative Text rather than in Anecdote one.Penelitian ini bertujuan untuk mengetahui apakah ada perbedaan dari kemampuan menulis mahasiswa secara umum dan aspek-aspek menulis mereka secara khusus dan untuk menelusuri apakah ada perbedaan dari prediksi mahasiswa terhadap Teks Narasi dan Anekdot sebagai bagian dari Instruksi Input-Output Tertulis Terpahami yang Interaktif. Penelitian ini melibatkan 36 mahasiswa Pendidikan Matematika pada tahun ajaran 2016/2017. Untuk mengumpulkan data, penelitian mengadakan tes menulis dan mengumpulkan draft-draft tulisan mereka. Data-data tersebut kemudian dianalisa secara kuantitatif dan kualitatif. Hasil penelitian menunjukkan bahwa ada perbedaan dari kemampuan menulis mahasiswa secara umum dan aspek-aspek menulis mereka secara khusus setelah penerapan instruksi ini. Selain itu, terdapat perbedaan prediksi yang dibuat terhadap dua tekster sebut dengan lebih mudahnya mahasiswa untuk memprediksi kelanjutan cerita pada Teks Narasi dibandingkan Teks Anekdot

Ion pumping in nanochannels using an asymmetric electrode array

We demonstrate an ion pump, consisting of a nanochannel with an AC driven asymmetric electrode array. Our system enables us to actively pump ions using a low driving voltage. In all experiments the electrical double layers are overlapping. Via viscous coupling ion pumping is accompanied by liquid pumping. Actuation below 500 mV at 10 Hz results in a liquid velocity of ~10 μm/s, corresponding to an electrical ion current of ~400 fA. Finite element simulations support the experimental data

The Influence Of Using Parlour Games Towards Students’ Vocabulary Achievement

Penelitian ini bertujuan untuk mengetahui apakah ada pengaruh terhadap pencapaian vocabulary siswa setelah diajarkan melalui parlour games dan untuk mengetahui respon siswa terhadap pengajaran vocabulary melalui parlour games.Hasil menunjukkan bahwa siswa diajarkan melalui permainan ini tampaknya lebih menyenangkan dan tertarik untuk belajar kosakata sejak siswa dapat memberikan respon yang baik selama proses belajar mengajar. Proses belajar mengajar menantang dan melibatkan semua siswa dalam permainan. Hal ini dapat dilihat dari peningkatan nilai rata-rata siswa. Skor rata-rata siswa dari pretest adalah 56,50 sedangkan nilai rata-rata posttest adalah 63,40. Setelah membandingkan hasil pretest dan skor posttest, ditemukan bahwa ada peningkatan yang signifikan, skor rata-rata siswa meningkat 6,9 setelah treatment. Berdasarkan hasil, dapat disimpulkan bahwa mengajar vocabulary melalui permainan Parlour dapat memberikan pengaruh positif untuk meningkatkan prestasi kosakata siswa secara signifikan. This research was intended to find out whether there was an influence of students’ vocabulary achievement after being taught through parlour games and to know students’ response toward teaching vocabulary through parlour games. The results show that the students taught through parlour games seemed to be more enjoyable and interested in learning vocabulary since the students could provide a good response during teaching learning process. The teaching learning process challenged and involved all students in the game. It can be seen from the increase of the students’ mean score. The students’ mean score of the pretest was 56.50 while the mean score of the posttest was 63.40. After comparing the result of the pretest and the posttest scores, it was found that there was a significant increase, the mean score of the students had increased 6.9 after the treatments. Based on the results, it can be concluded that teaching vocabulary through Parlour games can give positive influence to increase students’ vocabulary achievement significantly.

Comparative Study of Reading Achievement of Narrative Between Students Taught Through Graphic Organizer and Translation

The objectives of the research are to find out whether there is significant difference in the improvement of students reading comprehension achievement of English narrative text between students taught through graphic organizer and taught through literal translationand to find out which one is more effective technique. The research was conducted at SMAN 1 Natar especially the first grade. To gain the objective of the research, the researcher conducted quantitative design with pre-test posttest experimental group design. The test result showed that the mean of posttest in the experimental group one was 79.8and the mean of the posttest in the experimental class two was 72, probability level (p) was 0.000. The experimental class two gained the lower average score in posttest than experimental class one. The mean difference was 7.87. It was lower than 0.05. It means that H1was accepted and H0 was rejected since 0.00<0.05. It proves that the treatments given by the researcher had better effect of the students’ achievement. Based on the data, the researcher concludes that the application of graphic organizer improves students’ reading comprehension achievement of narrative text

The Effectiveness of Explicit-Implicit Vocabulary Learning Using Subtitled-Video on Vocabulary Mastery of Students of MTs. Darul A\u27mal

Penelitian ini bertujuan untuk mengamati efektifitas pembelajaran kosakata dengan pendekatan eksplisit-implisit menggunakan video yang diberikan subtitle L1 (Bahasa Indonesia) atau L2 (Bahasa Inggris) terhadap penguasaan 30 kosakata target. Desain penelitian ini adalah quasi-experimental dengan 2x2 desain faktorial. Tiga puluh (30) siswa di setiap kelas dimasukan kedalam salah satu dari empat perlakuan berikut; eksplisit-L1, explisit-L2, implisit-L1, dan implisit-L2. ANOVA dua jalur menunjukan adanya interaksi yang signifikan antara pembelajaran explisit-implisit dengan jenis subtitle yang digunakan dalam video terhadap hasil immediate post-test (p = 0.004 < α = 0.05). Pembelajaran kosakata dengan pendekatan explisit terbukti lebih unggul dibandingkan dengan pembelajaran implisit; dan video dengan subtitle berbahasa Indonesia (L1) terbukti lebih unggul dibanding video dengan subtitle berbahasa Inggris (L2). Hasil ini menunjukan bahwa video yang diberikan subtitle berbahasa Indonesia (L1) dapat menjadi sarana pembelajaran kosakata yang baik terutama ketika dibarengi dengan penggunaan pendekatan eksplisit.The aim of this study is to investigate the effectiveness of explicit and implicit vocabulary learning using video with L1 or L2 subtitle to students\u27 vocabulary mastery of 30 target words. The design is quasi-experimental with 2x2 factorial designs. Thirty (30) students in each classroom were assigned to one of these four conditions; explicit-L1 subtitle, explicit-L2 subtitle; implicit-L1 subtitle, and implicit-L2 subtitle. Two-way factorial ANOVA reveals that there is a statistically significant interaction between explicit-implicit learning and types of subtitled video on the students\u27 immediate post-test results (p = 0.004 < α = 0.05). Explicit learning was proved to be superior to implicit learning, and L1 subtitle is superior to L2 subtitle in four learning conditions. This result suggests that L1 (Indonesian) subtitled-authentic-video has proved to be a valuable resource to learn new vocabularies in the classroom, especially when presented using explicit instructions

Application of OCT to examination of easel paintings

We present results of applying low coherence interferometry to gallery paintings. Infrared low coherence interferometry is capable of non-destructive examination of paintings in 3D, which shows not only the structure of the varnish layer but also the paint layers

Internalizing Islamic Values in Electrochemistry Learning

The purpose of this paper is to describe a potential way of integrating the knowledge of electrochemistry with a story in the Al-Quran particularly in the sura of Al-Kahfi, verse 83-96. The story tells about an implicit understanding of the concept of electro chemistry. Having the story in the learning of electrochemistry is aimed to internalizing the spirit of Islam in the learning of electro chemistry. Using a classroom action research, this study involved 95 students who are taking the course of Basic Chemistry 2. This study used three instruments, namely: observation sheet of students activity, observation sheet of students attitute, and self-assessment questionnaire. Based on the data, the study found that students were considerably active in each stage of the learning process with the average of activitiy is 78% (good). With regards to attitude, only aspect of responsibility that was not well appeared while the aspects of religious curiosity, cooperative, and communication relatively presente

Modified Cooperative Integrated Reading and Composition to Promote Students' Reading Comprehension Achievement

Tujuan penelitian ini adalah untuk mengetahui: 1) efektifitas teknik DBCIRC untuk meningkatkan kemampuan pemahaman membaca; 2) persepsi mahasiswa terhadap penerapan teknik DBCIRC. Peneliti menggunakan one class pre-test post-test design. Sampel penelitian terdiri atas 16 mahasiswa STKIP Muhammadiyah Kotabumi yang dipilih secara purposive. Dalam mengumpulkan data, peneliti menggunakan tiga instrumen yaitu test pemahaman membaca, angket dan pedoman wawancara. Data dianalisis secara kuantitatif dan kualitatif. Hasil analisis data menunjukan bahwa (p) value yang diperoleh dari perhitungan paired t-test adalah 0.000. Dapat dilihat bahwa (p) value (0.000) lebih kecil dari taraf signifikan (0.05). Artinya adalah Ho ditolak dan Ha diterima. Disamping itu, hasil angket dan wawancara menunjukan bahwa persepsi mahasiswa terhadap penerapan teknik DBCIRC adalah positif. Jadi dapat disimpulkan bahwa penerapan teknik DBCIRC sangat efektif untuk meningkatkan kemampuan pemahaman mahasiswa dalam membaca. This study aimed to examine: 1)the effectiveness of DBCIRC technique to promote students' reading comprehension achievement; 2) the students' perception about the implementation of DBCIRC technique. This study employed one class-pre test post-test design. The sample consisted of 16 students of STKIP Muhammadiyah Kotabumi who were selected purposively. To gather the data, the researcher used reading comprehension test, questionaire and interview guideline. The data were analyzed both quantitatively and qualitatively. The results show that (p) value gotten from paired t-test was 0.000. It can be seen that (p) value (0.000) is less than significant level (0.05). In other words, H0 is rejected and Ha is accepted. Besides, the result of students' questionaire and interview reveal that students' perception about the implementation DBCIRC technique was positive. Therefore, it can be concluded that DBCIRC technique was effective to be used to promote students' reading comprehension achievement

Hypermultiplets and hypercomplex geometry from 6 to 3 dimensions

The formulation of hypermultiplets that has been developed for 5-dimensional matter multiplets is by dimensional reductions translated into the appropriate spinor language for 6 and 4 dimensions. We also treat the theories without actions that have the geometrical structure of hypercomplex geometry. The latter is the generalization of hyper-Kaehler geometry that does not require a Hermitian metric and hence corresponds to field equations without action. The translation tables of this paper allow the direct application of superconformal tensor calculus for the hypermultiplets using the available Weyl multiplets in 6 and 4 dimensions. Furthermore, the hypermultiplets in 3 dimensions that result from reduction of vector multiplets in 4 dimensions are considered, leading to a superconformal formulation of the c-map and an expression for the main geometric quantities of the hyper-Kaehler manifolds in the image of this map.Comment: 18 pages; v2: several clarifications in text and formulae, version to appear in Class.Quantum Gravit