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All Journal International Journal of Renewable Energy Development Jurnal S2 Teknologi Pendidikan
AGUS SULISTIYONO
Renewable Energy Research Centre, Department of Chemical Engineering, Faculty of Engineering, Universitas Muhammadiyah Surakarta, Kartasura
Chemistry Education Energy

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PENGARUH PENERAPAN METODE PEMBELAJARAN JOB EXPERIENCE DAN DEMONSTRASI TERHADAP PRESTASI BELAJAR PADA KOMPETENSI DASAR PERAWATAN DAN PERBAIKANSISTIM PENGAPIAN KONVENSIONAL DITINJAU DARI MOTIVASI BELAJAR SISWA SULISTIYONO, AGUS
Jurnal Teknologi Pendidikan dan Pembelajaran Vol 2, No 2 (2014): Jurnal Teknologi Pendidikan dan Pembelajaran
Publisher : Jurnal Teknologi Pendidikan dan Pembelajaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (146.902 KB)

Abstract

The purpose of this studies to determine (1) the difference in the effect of the aplication job experience and the demonstration method toward student’s learning achievement for cognitive ability on BCMRCIS (2) the difference in the effect of high and low learning motivation toward student’s learning achievement for cognitive ability on BCMRCIS (3) the interaction in the effect of the learning method and student’s learning motivation toward learning achievement for cognitive ability on BCMRCIS. (4) the difference in the effect of the aplication job experience and demonstration method toward student’s learning achievement for psychomotor ability on BCMRCIS. (5) the difference in the effect of high and low learning motivation toward students’learning achievement for psychomotor ability on BCMRCIS (6) the interaction in the effect of the learning method and student’s learning motivation toward learning achievement for psychomotor ability on BCMRCIS.This research type is a scientific experiment. Data analysis used ANAVA 2 ways with fictorial design 2x2. The population is a class of XII Light Vehicle Engineering (LVE) Skills Competence SMK Muhammadiyah Kudus as many as 170 students. The sampling technique used a multi-stage random sampling which consists of 30 students of LVE1 XII class SMK Muh Kudus as the experimental group using the job experience method, 30 students of LVE1 XII class SMK Muh Undaan as a control group using a demonstration method, and 30 students of LVE1 XII class SMK Muh Ponpes as a  instrumen group Based on the analysis it appears that: (1) there is a difference in the effect of the aplication job experience and demonstration method toward student’s learning achievement for cognitive ability on BCMRCIS, the decision test (H0 is rejected). (2) there is no difference in the effect  of high and low learning motivation toward student’s learning achievement for cognitive ability on BCMRCIS, the decision test   (H0 is accepted). (3) there is no the effect in the interaction between the learning methods and  student’s learning motivation toward learning achievement for cognitive ability on BCMRCIS, the decision test  (H0 is accepted). (4) there is a difference in the effect of the aplication job experience and demonstration method toward student’s learning achievement for psychomotor ability on BCMRCIS, the decision test   (H0 is rejected). (5) there is a difference in the effect of high and low learning motivation toward student’s learning achievement for psychomotor ability on BCMRCIS, the decision test   (H0 is rejected). (6) there is no the effect in the interaction between the learning method and  student’s learning motivation toward learning achievement for psychomotor ability on BCMRCIS, decision test   (H0 is accepted).Keywords: job experience, demonstrations, motivation, academic achievemen
Utilization of Iles-Iles and Sorghum Starch for Bioethanol Production Kusmiyati, Kusmiyati; Sulistiyono, Agus
International Journal of Renewable Energy Development Vol 3, No 2 (2014): July 2014
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.3.2.83-89

Abstract

The aims of this study were to convert the starches from iles-iles tubers (Amorphophalus campanulatus) and sorghum grains (Sorghum bicolor L) into bioethanol as an alternative energy. Both of these agricultural products contains a high content starches and they do not use as the major foods in Indonesia. To find out the maximum ethanol concentration and yield, both the raw materials were converted to ethanol on various process variables including the concentration of flour substrate solution (100-300 g/L), β-amylase enzyme concentration (0.8 - 6.4 ml/kg of flour ), the  concentration of dry yeast S. cerevisiae (2-15 g), and fermentation time (72-168 hours). The results showed that at the flour substrate concentration of 250 g/L produced the maximum ethanol contents of 100.29 g/L and 95.11 g/L   for iles-iles and sorghum, respectively. Effect of β-amylase enzyme in the saccharification process showed that at concentration  of 3.2 ml/kg  the maximum reducing sugar content of 204.94 g/L and 193.15 g/L  for iles-iles and sorghum substrate, respectively were generated therefore it was corresponding to the maximum ethanol production. The concentration effect of dry yeast S. cerevisiae in the fermentation stage for the iles-iles and sorghum substrate revealed that the maximum ethanol obtained at 5 g yeast activated in 100 ml medium starter resulted the highest ethanol content 100.29 g/L 95.11 g/L for iles-iles and sorghum substrate, respectively. To determine the effect of fermentation time on ethanol yield from iles-iles and sorghum substrate, the fermentation process were performed at 3, 5, and 7 days. The maximum ethanol fermentation was obtained at 5 days fermentation. The ethanol yield is calculated by weight of ethanol is formed (g) divided by the weight of flour (g). Based on the experiment results, conducted, generally the highest ethanol yield of iles-iles was higher than that of sorghum flour. The highest yield (g/g) iles-iles and sorghum flour were 71.25 and 68.92 respectively
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