Efektifitas Trainer Pneumatik Sebagai Media Pembelajaran Pada Materi Pengontrolan Gerak Sekuensial

The purpose of this study is to determine the effectiveness of pneumatic trainer as instructional media in sequential motion control material. The research uses quasi-experimental method with pre and post test design. The material is limited to sequential motion control using two actuators for objects transfer. Control class uses instructional media training kit, while experimental class uses development-result trainer. Essay tests are in form of diagram circuit for application of electroplating products transfer. The results show that the developed pneumatic trainer and training kit are quite effective as media of learning in sequential motion control. Statistical tests indicate no significant difference between the two groups, so that it can be concluded that compared to training kit, the developed pneumatic trainer is not more effective as learning media

PERANCANGAN STASIUN KERJA MENGURANGI KELUHAN SUBJEKTIF WANITA PEKERJA MOSAIK PADA CV. MTN BALI

Abstract: this article offers promoting productive performance via ergonomic approach at CV. MTN, which is a wood manufacture industry that produces furniture. Of the varying product include Hotel facilities, private home, and wooden floors (mosaic tile). The mosaic tile has been the export commodity, but the employees work manually and simply, without using sufficient equipments, which instigates a subjective complaint of mosaic artist. They are complaint because they have to work on the top of a relatively. High desk and table that forcesan un-natural working behavior. The size of table and work material too short forces the employee to bend. To promote the performance of the employee is by mitigating the complaint and working impulse with ergonomic approaches maximally

Practicum Workshop and Learning Media Quality in the Light Vehicle Engineering Department of Vocational High Schools

The study is to determine the quality of workshop practice and media learning of light vehicle engineering in Vocational High Schools in terms of (1) the facilities and infrastructure of laboratory and (2) the use of instructional media practices of light vehicle engineering. The collection of data used the method of observation, documentation, interview. This type of qualitative research is a case study approach, involving five internship supervisor teachers and workshop managers. The results of the study showed that the practice of Automotive Engine Repair with spacious 84 m2, Automotive Chassis Repair with a spacious 72 m2, Automotive Electrical Repair with spacious 24 m2 had not yet met the standard minimum as suggested at the Minister of Education and Culture Regulation number 34 of 2018. The use of practical learning media was less effective because: (1) the comparison of study groups with the area of the workshop was not balanced, (2) the existence of some practicum subjects scheduled in the same day resulted in the students were practicing simultaneously at one time, and (3) the lack of practicum facilities

multimedia interaktif "sinau aksara jawa" kelas 3 sekolah dasar

Dalam upaya menjaga peninggalan budaya indonesia, khususnya adalah penggunaan aksara Jawa sebagai media komunikasi dalam bentuk tulisan yang saat ini mulai dilupakan, maka dihadirkan suatu aplikasi pembelajaran aksara Jawa yang berbentuk multimedia interaktif dengan menggabungkan teks, gambar, animasi, dan suara. Permasalahan dalam penelitian ini adalah bagaimanakah merencanakan, membuat dan menguji produk berupa media pembelajaran interaktif tentang aksara jawa. Media pembelajaran interaktif aksara Jawa ini meliputi cara penulisan dan pembacaan aksara Jawa, latihan dan tes yang berupa soal – soal seputar aksara Jawa. Salah satu perangkat lunak yang sangat mendukung dalam penerapannya adalah Adobe Flash CS3. Dengan adanya aplikasi pembelajaran aksara Jawa ini diharapkan dapat membantu proses belajar, lebih mengenal aksara Jawa, berlatih menuliskan dan membaca aksara Jawa melalui fasilitas yang telah disediakan pada aplikasi pembelajaran ini

Level of professional culture University students in Jordan

The study aimed to identify the level of professional culture of undergraduate students In Jordan from the point of view of the students themselves and its relationship to the gender variable, where the descriptive approach was used in addition to the use of the questionnaire as a study tool in the classroom. school the first of the academic year (2021-2022AD)The study sample consisted of (300) male and female students representing all levels and stages of university study. The study, after conducting the appropriate statistical treatments, concluded that the level of professional culture among students It reached (3.45) with a standard deviation of (0.54) and a mean total score, in addition to the absence of statistically significant differences in the level of professional culture for students, which are attributed to the gender variable

PENGARUH PERHATIAN ORANG TUA DAN KELOMPOK SEPERMAINAN TERHADAP PRESTASI BELAJAR MATA DIKLAT KEJURUAN SISWA KELAS X SEMESTER 1 TEKNIK KENDARAAN RINGAN DI SMK NEGERI 1 SAPTOSARI TAHUN AJARAN 2012/2013

Penelitian ini bertujuan untuk mengetahui Pengaruh Perhatian Orang Tua dan Kelompok Sepermainan Terhadap Prestasi Belajar Mata Diklat Kejuruan Siswa Kelas X Semester 1 Teknik Kendaraan Ringan di SMK Negeri 1 Saptosari Tahun Ajaran 2012/2013. Penelitian ini merupakan penelitian ex post facto. Penelitian dilakukan di SMK Negeri 1 Saptosari Gunungkidul Yogyakarta. Responden penelitian ini adalah seluruh siswa kelas X Program Keahlian Teknik Kendaraan Ringan di SMK Negeri 1 Saptosari Tahun Ajaran 2012/2013 yang berjumlah 60 siswa. Pengumpulan data untuk variabel Perhatian Orang Tua dan Kelompok Sepermainan menggunakan metode angket sedangkan untuk variabel prestasi belajar dengan metode dokumentasi. Teknik analisis data yang digunakan adalah analisis statistik komparatif. Hasil penelitian menunjukkan bahwa dengan taraf signifikansi 5% terdapat pengaruh yang signifikan dari: (1) perhatian orang tua terhadap prestasi belajar siswa kelas X semester 1 di SMK N 1 Saptosari tahun ajaran 2012/2013 yang ditunjukkan dengan nilai thitung 6,4864> ttabel 2,263, (2) kelompok sepermainan terhadap prestasi belajar siswa di SMK N 1 Saptosari tahun ajaran 2012/2013 yang ditunjukkan dengan nilai thitung 5,4324> ttabel 2,263, (3) perhatian orang tua dan kelompok sepermainan secara bersama-sama terhadap prestasi belajar siswa kelas X semester 1 di SMK N 1 Saptosari yang ditunjukkan harga Fhitung 9,7562 > Ftabel 3,15

Optimasi Proses Nitrasi pada Pembuatan Nitro Selulosa dari Serat Limbah Industri Sagu

Proses pembuatan selulosa nitrat dari serat sagu dilakukan dengan dua tahapan proses yaitu proses delignifikasi dan proses nitrasi. Penelitian ini bertujuan untuk mempelajari proses nitrasi selulosa menjadi nitro selulosa. Sebelum dinitrasi, selulosa serat sagu dibersihkan dari kandungan ligninnya dengan proses soda nitrat memakai asam nitrat dan natrium hidroksida. Proses nitrasi menggunakan asam campuran yang terdiri dari asam nitrat dan asam sulfat sebagai katalisator. Proses dilakukan dalam labu leher tiga yang dilengkapi pengaduk dan pengatur suhu. Pada penelitian ini dipelajari pengaruh waktu reaksi, perbandingan selulosa dengan asam campuran dan perbandingan asam sulfat dengan asam nitrat. Hasil penelitian menunjukkan bahwa proses nitrasi akan memberikan hasil terbaik pada waktu reaksi 1,5 jam, perbandingan selulosa – asam campuran 1:20 serta perbandingan asam sulfat – asam nitrat 1:5. Pada kondisi ini diperoleh yield sebanyak 151,22% dengan kandungan nitrogen sebanyak 13,39% yang mendekati kadar nitrogen maksimum teoritis sebesar 14,14%. Kata kunci: delignifikasi, nitrasi, nitroselulosa, kadar nitrogen Nitrocellulose production from sago fibers was conducted in two steps, i.e. delignification and nitration processes. This work studied the nitration process of sago fiber cellulose. Before nitration, the lignin was removed using the nitrate soda process utilizing nitric acid and sodium hydroxide. The nitration process used an acid solution consisting of nitric acid and sulfuric acid as a catalyst. The process was carried out in a three neck flask equipped with stirrer and temperature control. The effects of reaction time, nitric acid concentration, and sulfuric to nitric acid ratio were investigated. The results showed that the best operating conditions obtained for the reaction time, cellulose to mixed acid ratio and sulfuric to nitric acid ratio were 1.5 hours, 1:20 and 1:4 respectively in which the product yield and nitrogen content were found to be 151.22% and 13.39%. This nitrogen content was close to the theoretical maximum nitrogen content of 14.14%. Keywords: delignification, nitration, nitrocellulose, nitrogen content