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Sulaeman Deni Ramdani
Mechanical Engineering Education, Faculty of Teacher Training and Education, University of Sultan Ageng Tirtayasa Ciwaru Raya St., No. 25, Serang, Banten, 42117
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DEVELOPMENT OF CLASS-BASED COGNITIVE ASSESSMENT INSTRUMENT ACCORDING TO CURRICULUM 2013 ON TECHNICAL DRAWING SUBJECTS IN VOCATIONAL SCHOOL Ita Novita Sari; Sulaeman Deni Ramdani
VANOS Journal of Mechanical Engineering Education Vol 2, No 2 (2017)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (394.347 KB) | DOI: 10.30870/vanos.v2i2.2930

Abstract

The 2013 curriculum uses a classroom-based assessment. The curriculum contains various supporters, one of which is an assessment. Assessment by teachers is used to measure the achievement of learning objectives. But in the real world, a teacher has difficulty in developing assessment planning, assessment implementation, and processing of assessment result, and teacher has not analyzed comprehensively about validity and reliability in question, and analysis of evaluation instrument conducted by the teacher is only limited to analyze difficulty level. Thus, the problem that is made to know the cognitive level of students has not known the quality. The objectives of this study were (1) to know the reliability of cognitive assessment instruments developed, (2) to know the level of difficulty, (3) to know the differentiating power, and (4) to know the effectiveness of the cultivators. The method used in this research is research and development (R & D) developed by Borg & Gall. Data analysis technique that is done is instrument validation test with construct validity through judgment expert, reliability test using ITEMAN with formula CR-20. This study resulted in (1) the reliability of the question items of 0.740, (2) the degree of difficulty there are three levels, namely difficult 23%, medium 70%, and easy 7%, (3) distinguishing power on the grain matter analysis resulted in 20%, 7% of the questions are sufficient, 60% is good, and 13% are very good, and (4) the effectiveness of the deception is 82% working and 18% not working.
CHARACTERISTICS AND CONSUMPTION OF FUEL OIL SOLAR OIL WITH HAZELNUT OIL IN DIESEL MOTOR Muhammad Nurtanto; Sulaeman Deni Ramdani; Soffan Nurhaji
VANOS Journal of Mechanical Engineering Education Vol 2, No 2 (2017)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (394.542 KB) | DOI: 10.30870/vanos.v2i2.2926

Abstract

This study aims to determine the characteristics of fuel (diesel oil, walnut oil and sesame oil), the characteristics of the fuel mixture and knowing the amount of fuel consumption with a variation of the engine rotation. Measurements were made using 898 analyzer stages. Data were analyzed descriptively by describing the graphics and measurable phenomenon. The test results found that: (1) the characteristics of hazelnut oil, sesame oil meets the characteristics of the fuel; (2) a mixture of diesel fuel to 80% with 10% of hazelnut oil and sesame oil 10% yield better characteristics; and (3) the fuel consumption of the engine rev 1600 rpm, 2000 rpm and 2300 rpm is more stable on a mixture of diesel fuel to 80% with hazelnut oil 10% and sesame oil 10% each SFC obtained as follows 0.279882, 0.288938 and 0.281213.
Co-Authors Ita Novita Sari Muhammad Nurtanto Soffan Nurhaji