Steam Engineering

ANALISA HASIL BELAJAR MENGGUNAKAN MODEL PjBL PADA MATERI KONSEP MEKANIKA ENERGI

2025-01-19T23:56:50+00:00

An excellent generation with noble character and knowledge is the goal of implementing education. The implementation of appropriate learning can provide good learning outcomes. The PjBL learning model is one of the cooperative learning models that requires students to work together in completing a predetermined project. The purpose of this study was to analyze student learning outcomes before and after the PjBL learning process and project-based learning outcomes. This study uses a one group pre-test post-test design, a sample of 15 students using the PjBL learning model as the treatment applied and analyzing the learning outcomes obtained by students during the learning process. This study concludes that through the implementation of the PjBL learning model, it provides differences in learning outcomes before and after the learning process is held on the material of energy mechanics concepts in the thermodynamics course with a value 0f 0,000. In addition, based on the research results obtained, the results of project-based learning produce good average values with an average value reaching 90% of student were able to complete the tasks thad had been given

PENGARUH SARANA PRASARANA PRAKTIKUM DAN MOTIVASI BELAJAR TERHADAP HASIL BELAJAR SISWA TEKNIK KENDARAAN RINGAN OTOMOTIF SEKOTA GORONTALO

2025-02-04T11:43:48+00:00

Vocational High Schools (SMK) are mandated by law to prepare human resources who are ready to enter the world of work and become a productive workforce, but this has not been optimal in preparing students for careers. The number of unemployed in this case indicates that the percentage of unemployed vocational school graduates is still relatively high. One of the ways education plays a role in reducing unemployment is by improving the quality of education. One factor that can improve the quality of education is improving learning facilities and infrastructure. Facilities and infrastructure in the educational process are included as one of the standards of the school or educational agency concerned. This research aims to analyze: (1) the influence of infrastructure on learning outcomes, (2) the influence of motivation on learning outcomes, (3) the influence of infrastructure and motivation simultaneously on learning outcomes. This research is quantitative research carried out at the Automotive Light Vehicle Engineering Vocational School in the city of Gorontalo. The population in this study was 72 students. The type of questionnaire in this research is a closed questionnaire and the results are analyzed using simple linear regression analysis and multiple linear regression analysis. The results of this research are: (1) Practical facilities and infrastructure have a significant impact on student learning outcomes at the Automotive Light Vehicle Engineering Vocational School by 31.8%. (2) Learning Motivation has a significant effect on the Learning Outcomes of Automotive Light Vehicle Vocational School students by 41.2%. (3) Practical Infrastructure and Learning Motivation simultaneously have a significant effect on the Learning Outcomes of Automotive Light Vehicle Vocational School students by 50.6%.

STUDI PERBANDINGAN PENGGUNAAN CATALYTIC CONVERTER LOGAM ALTERNATIF PADA TINGKAT KEBISINGAN SEPEDA MOTOR EMPAT LANGKAH

2025-03-07T21:31:40+00:00

The growth of motor vehicles in Indonesia, particularly motorcycles, is increasing rapidly. This rise contributes to environmental issues, especially noise pollution, which is caused by the disturbance from vehicle sounds. A catalytic converter, installed in vehicle exhaust systems, reduces harmful emissions but also affects noise levels. This study examines the impact of a nickel-coated copper catalytic converter on motorcycle noise. The research is experimental, comparing the noise produced by a standard exhaust with two experimental exhaust systems fitted with catalytic converters. The study uses a Honda Astrea motorcycle, and noise testing follows the ISO/FDIS 5130 standard. The results are compared to Government Regulation Law No. 07 of 2009, which sets noise limits for motor vehicles. The research results show that the standard exhaust produces a noise level of 83.3 dBA, experiment 1 catalytic converter produces a noise level of 83.6 dBA, and experiment 2 catalytic converter produces a noise level of 82 dBA. From these results, it is evident that experiment 2 catalytic converter succeeded in reducing the noise level by 1.56% compared to the standard exhaust. However, all three types of exhausts still do not meet the quality standards set in the Minister of Environment Regulation No. 07 of 2009 regarding Noise Limits for New Motor Vehicle Types, which sets the maximum noise limit at 80 dBA for stage 1

ANALISIS KEGAGALAN PADA PATAHAN MATA BOR TIPE HIGH SPEED STEEL

2025-03-09T06:14:27+00:00

Drill bit failure in the drilling process often occurs due to exposure to mechanical, thermal, and chemical loads during operation. Nachi HSS drill bits, as critical components in the manufacturing industry, are prone to sudden wear and breakage due to dynamic processes involving material fragmentation, friction, and increased local temperatures. This study analyses the root cause of Nachi HSS drill bit failure through fracture investigation, chemical composition, and microstructure. The analysis methods include macroscopic testing to identify fracture patterns, optical microscopy to evaluate surface deformation, and X-ray Fluorescence (XRF) testing to verify material composition. The results showed that the fault was a brittle fracture due to a mismatch in chemical composition: molybdenum (Mo) levels were not detected. At the same time, chromium (Cr) and vanadium (V) only reached 3.85% and 0.95%, 0.45% lower than factory standards. This deficiency reduces resistance to thermomechanical loads, triggering stress concentration and rapid crack propagation during the drilling of ST37 steel material at a speed of 1,800 RPM. These findings emphasize the importance of quality control of material composition and optimization of operating parameters to prevent premature failure.

PENERAPAN COOPERATIVE PEER INSTRUCTION BERBASIS ETNOGASTRONOMI UNTUK MENINGKATKAN LOCAL KNOWLEADGE

2025-03-20T21:51:01+00:00

This study aims to improve students' learning activities and cognitive learning outcomes, particularly related to local knowledge, in the subject of Basic Culinary Arts, specifically in the chapter Indonesian Food Processing, sub-chapter Javanese Dishes, through the implementation of the Cooperative Peer Instruction model integrated with ethnogastronomy. The research method used is Classroom Action Research (CAR). The subjects of this study were students of Class X-Culinary 2 at SMK YPM 2 Taman in the academic year 2024/2025. The instruments used included pre-tests and post-tests in each cycle, checklist-based observation sheets, and field notes. The data obtained were analyzed descriptively. Based on observations from Cycle I and Cycle II, there was an increase in the percentage of students' learning activities and cognitive learning outcomes. Respectively, the students' activity percentages were 59.03% and 70.48%, while the percentage of cognitive learning mastery was 62.5% and 78.125%. It can be concluded that the implementation of the Cooperative Peer Instruction model integrated with ethnogastronomy in the chapter Indonesian Food Processing, sub-chapter Javanese Dishes, in this study was able to improve students' learning activities and cognitive learning outcomes in the learning process.

IMPLEMENTASI PEMBELAJARAN BERDIFERENSIASI UNTUK MENINGKATKAN KEAKTIFAN BELAJAR SISWA

2025-03-19T09:26:48+00:00

Currently, the school curriculum still has limitations in terms of flexibility, so it cannot fully adapt to the needs of students. In school and classroom environments, there are various characteristics of students with different interests, talents and learning styles. Student activity in learning is an indicator of the success of the learning process. Based on the results of observations made by researchers through direct observation in class This condition is caused by learning methods that are still conventional, where students receive more material directly without active involvement in the learning process. This situation often results in students feeling less enthusiastic or bored, so they do not pay full attention to the material presented by the teacher. Therefore, this research aims to increase student participation through the implementation of differentiated learning that is adapted to the learning style of each student at the Satya Widya Tourism Vocational School, Surabaya. This classroom action research was carried out in two cycles, with research subjects of 30 students from class XI Culinary 1. The techniques used in this research included observation and documentation, while increasing student activity in each cycle was analyzed based on the research results obtained. The research results show that students started from pre-cycle, cycle I and cycle II, with the average student activity increasing. In cycle I, activeness increased from 74.38% to 83.75%, showing an increase of 9.37%. Furthermore, in cycle II, there was a further increase of 7.5%, reaching 91.25%. Overall, the increase in student activity based on this data reached 16.87% so that, This research has met the indicators of success in increasing active student participation.

PENERAPAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING UNTUK MENINGKATKAN KEMAMPUAN KOGNITIF SISWA

2025-03-20T21:49:14+00:00

This study aims to analyze the application of the Problem Based Learning in improving students' cognitive abilities in Danish Pastry material. The type of research used is classroom action with Kemmis & McTaggart model design which includes two cycles. Each cycle includes the stages of planning, implementation, observation, reflection. The population of the study was 32 culinary class XI students. The sampling technique used purposive sampling. The data analysis technique used a cognitive test result completion test, analysis of teacher and student activities through observation sheets, and the N-gain test. The results showed that application of PBL significantly increased the activities of teachers and students. With the percentage of teacher activity increasing from (95.29%) to (97.17%) while student activity increased from (85.63%) to (88.12%). Cognitive learning outcomes increased from pre-test (15.63%) to post-test (62.50%) in cycle I and increased further to reach completion reaching (100%) in cycle II. The results of N-Gain analysis showed a significant increase from the medium category (0.339) to the high category (0.942). The conclusion of this study is that application of PBL is effective in improving students' cognitive understanding, allowing students to be more active in problem solving, critical thinking, and understanding concepts in depth

MENINGKATKAN PEMAHAMAN MATERI DESSERT MELALUI MEDIA PEMBELAJARAN QUIZIZZ

2025-03-20T21:54:12+00:00

The aims of this study is to enhance the understanding of vocational high school students in the Culinary Department, Phase E, regarding Dessert material by utilizing Quizizz as an interactive learning medium. The research employs Classroom Action Research (CAR) conducted in two cycles, each consisting of planning, action, observation, and reflection stages. Data collection was carried out through pre-tests and post-tests to measure students' comprehension improvement. The findings indicate that implementing Quizizz effectively enhances students' understanding, with a learning outcome increase of 16% in the first cycle and 30% in the second cycle. The use of Quizizz not only boosts student engagement in the learning process but also creates a more interactive and enjoyable learning atmosphere. This study proves that integrating technology as a learning medium can be an effective solution to improving education quality, particularly in the culinary field at vocational high schools

PENGARUH PENDEKATAN SAINTIFIK TERHADAP HASIL BELAJAR PEWARNAAN DOUBLE APLIKASI

2025-03-19T09:27:30+00:00

Hybrid learning at SMK Negeri 2 Jombang greatly affects students' understanding of the learning outcomes of double application coloring (tipping). This study aims to analyze the effect of the implementation of a scientific approach that affects the learning outcomes of double application coloring (Tipping) of grade 11 students of SMK Negeri 2 Jombang. The research method used is an experiment with a pretest-posttest control group design. The sample used in this study was class 11 Beauty of SMK N 2 Jombang. The results of the study showed that there was an influence of a scientific approach on the learning outcomes of double application coloring (tipping) on students' cognitive learning outcomes as evidenced by the results of the t-test sig value of 0.000 which was smaller than the real price of 0.05 or 0.000> 0.05. In addition, there was a difference in the average posttest results in the control class of 66.50 and the experimental class of 81.96