Jurnal Pendidikan Teknologi Kejuruan
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Perceptions of strategies for revitalizing industrial work experience scheme toward vocational and business education graduates’ employability in public universities, Nigeria
Full text linkThis paper investigated educators and students’ of vocational and business education students’ perceptions of strategies for revitalizing industrial work experience scheme in public universities in Edo State. Four research questions and one hypothesis guided the study. The study utilized the descriptive survey. A sample of 66 vocational and business educators and 178 students making a total 242. The study used stratified random sampling technique. The instrument was a 4-point scale. It was rated Strongly Agree, Agree, Disagree and Strongly Disagree and assigned weights of 4, 3, 2 and 1 respectively. Two experts in Vocational Education validated the instrument. Reliability was done with test-retest method. 20 copies of the instrument were administered on 20 business education students who are in the population but not in the sample. The first and second administrations of the instrument were done in an interval of one week interval. Analyses of the data was done with PPMC (Pearson Product Moment Correlation) Coefficient and the reliability coefficient of the instrument yielded α = .78. Data for the study was analyzed with percentage, mean, standard deviation and t-test. Findings revealed that vocational educators and students agreed that all the institution based strategies such as train the institution based supervisors on the goals of ITF, identify placement opportunities for student’s attachment and plan practical contents and real life learning experience among others are necessary for effective revitalization of SIWES
The effectiveness of the case method to improve student learning outcomes in the SMAW subject
Full text linkThis study aims to assess the effectiveness of the case method for improving student learning outcomes in the SMAW (Shielded Metal Arc Welding) subject. This research employs classroom action research. The subjects of this study are 11th-grade students majoring in Mechanical Engineering at State Vocational High School 1 Silaut, West Sumatra, Indonesia. Data collection techniques include observation sheets to assess teacher and student activities, tests to evaluate students’ knowledge, and documentation to support the research. The study results indicate that implementing the case method teaching model effectively improves student learning outcomes because students are engaged and interested in learning. This is evident in the learning outcomes in cycle 1, where 64.29% of students achieved passing grades, with nine passing, while 35.71% did not pass, with five students falling short. In cycle 2, student learning outcomes improved to 78.57%, with 11 students passing, while 21.43% did not pass, with three students not meeting the passing criteria. In conclusion, the case method teaching model effectively enhances student learning outcomes in the SMAW subject
Managerial techniques required of principals of technical and vocational colleges for quality assurance and skill acquisition
Full text linkThe study is on the Managerial Techniques Required of Principals of Technical and Vocational Colleges for Quality Assurance and Skill Acquisition. The study was carried out in Lagos State. It covered all the six (6) technical colleges in the state. Survey design was used to elicit information from the respondents. The population of the study included all the Principals, and Vice Principals, departmental and unit heads. A total of six principals, twelve vice principals, five departmental heads and fifteen unit heads were used for the study. A pilot study was conducted to ascertain the reliability of the questionnaire items which was calculated to be 0.69. Five research questions were raised for the study and the data collected analysed with mean and standard deviation. The result of the study showed that Principals of technical and vocational colleges apply some levels of managerial skills though do not involve teachers in policy and decision making, Most of the managerial techniques of Principals of technical and vocational colleges are not very adequate to enhance the quality of technical and vocational education
Synthesis Optimization of Cathode Precursor Ni0,5 Mn0,4 Co0.1 (OH)2 with Coprecipitation Method
Full text linkThe use of conventional fuels such from fossils sourced is non-renewable energy, which makes this energy source less environmentally friendly. The battery that is nowadays used widely is the Lithium-Ion type with variations in the type of electrode. Electrodes have an important role in battery performance, especially at the cathode. Predecessor cathode types such as LiCoO2, LiMnO, and LiNiCo have various disadvantages due to their dangerous nature, insufficient capacity, and poor stability. NMC cathode (NiMnCo), in this case, NMC541 is presented to overcome these deficiencies. The process of making NMC541 cathode can be done by various synthesis methods, one of which is Co-precipitation. The synthesis parameter directly influences the performance of the cathode precursor produced, especially on its microstructure. For that, we try to optimize the synthesis parameters, such as Stirring Speed, and Aging time. The result said that samples with 900 Rpm stirring speed give the best product precursor along to their small size particle and good conductivity. Meanwhile, Aging co-precipitation doesn’t significantly affect coprecipitation precursor products
Economic analysis of variable speed drive control through profinet technology on distributed control system: A case study in essential oil processing factories
Full text linkElectrical equipment in essential oil processing plants is generally dominated by electric motor loads. In today\u27s digital era, global competition and technological advances encourage factories to increase the efficiency and reliability of their production equipment. One way of efficiency is to use a variable speed drive (VSD). The existence of Profinet technology as a network protocol between the control equipment and the VSD allows users to increase system reliability while increasing energy use efficiency. Even so, there are still many factories that are hesitant to use this technology in their automation systems. Many low to medium-sized factories still use traditional control methods such as hardwired. This method is considered more reliable, and inexpensive compared to using Profinet technology. Cost-benefit analysis is carried out to prove this paradigm. At the same time provides certainty that the investment costs incurred in building the system provide added value for production equipment. From this research, it is proven that the use of Profinet technology in addition to providing savings on investment costs also provides benefits from a technical perspective. This technology also allows the implementation of condition-based monitoring systems for electric motors in production equipment. Which in turn can increase the performance and service life of the machine
Distribution system dewatering in coal mining at PIT Sena Sungai Lilin District, Musi Banyuasin Regency, South Sumatra Province
Full text linkThe purpose of this research is to calculate the total design discharge of water entering the mining site in the sena pit of PT Putra Muba Coal (PMC), design the appropriate shape and dimensions of the sump to accommodate the amount of water entering the mining site and calculate the number of pumps needed to remove water entering the mine to the settling pond. The source of water entering the mine area comes from rainwater entering the mine opening, water runoff from the rainwater catchment area in the area around the mine opening, and groundwater rise. Based on the results of the analysis of rainfall data for 2013-2022, a rainfall plan of 77, 225 mm/day, rainfall intensity of 9.714 mm/hour with a rainfall return period of 2 years was obtained. The rainfall catchment area at the research site is 72,936 m2 with a discharge generated of 0.03 m3 / second and groundwater discharge of 0.00812 m3 / second. To remove the water entering the mine, it is flowed naturally into the sump with dimensions of 50 m length, 14 m top width, 13 m bottom width, and 5 m depth. The dimensions of the open channel are planned with a channel width of 32 cm, a flow depth of 28 cm, a wet cross-sectional area of 13.6 cm2, a wet circumference of 97 cm, a hydraulic radius of 9.25 cm, and a channel length of 233m. The water in the sump is pumped into an open channel. The pump used has a maximum discharge of 150 m3 / hour and a total pump head of 11.8712 m with a pipe diameter of 6 inches
Estimation of health impacts and externality costs with the robust uniform world model in the Muara Karang generation units
Full text linkTo encourage national economic growth, efforts are made to maintain electricity availability in Indonesia. Until now, the need for electrical energy in Indonesia is still supplied by fossil fuel power plants, especially Steam Power Plants and Gas Steam Power Plants. One of the negative impacts arising from electricity generation activities is air pollution. Air pollution is produced in the form of waste gases such as PM10, SO2, NO2, and these gases causes global warming and impact of human health. In this study, the magnitude of the negative impact calculated based on the impact on public health, which will then be limited to economic value (cost of externalities). Cost of externalities are conditions when the effect of the production of goods or services imposes costs or benefits on other parties, and these costs are not reflected in the price charged for the goods or services produced. The estimation of public health impacts and externality costs calculated in this study comes from power plants operating at the Muara Karang Generation Unit using Robust Uniform World Model (RUWM). The research results show that the amount of health and externality costs obtained for each power plant are different because each power plant has different operating conditions. In PLTGU Block 1, the resulting externality cost was 18,51 cents USD/kWh, PLTGU Block 2 was 3,05 cents USD/kWh, and PLTGU Block 3 was 1,75 cents USD/kWh. The two Unit of PLTU Muara Karang generate different externality costs, namely 1,52 cents USD/kWh for PLTU Unit 4 and PLTU Unit 5 of 1,10 cents USD/kWh
Implementation of project-based learning (PjBL) model to increase students’ creativity and critical thinking skill in vocational creative product subjects
Full text linkThe primary goal of education was the development of an individual\u27s potential to foster intellectual, emotional, social, creative, and critical ways of thinking. It was important to remember that the concept and purpose of education can vary across cultures and contexts, and attitudes about education can also change over time as social, technological, and human developments occur. This research aimed to solve problems that arise in the classroom to improve students\u27 creativity and critical thinking. This type of research used classroom action research that focuses on improving classroom learning in a practical manner pursued by a teacher by developing activities that can improve the quality of the learning process in the classroom. The data analysis results of the student product creativity assessment were 75% in the excellent creativity category and 25% at the excellent creativity level. Implementation of PjBL model had an effect on increasing student creativity as evidenced by the results of hypothesis testing, namely by testing with the Gain Score method, which there were N-gain results of 0.53 and showed a moderate increase in creativity compared to student scores before the implementation of the PjBL model, which there was an increase in the value before the model was implemented
Project-based learning module on creativity and entrepreneurship product subjects: Validity and empirical effect
Full text linkThe learning process of Creativity and Entrepreneurship Product subjects in Vocational High Schools still uses printed books, resulting the students’ boredom in learning the materials. Apart from that, the learning method used is the lecture method which is certainly less effective in supporting students\u27 understanding on the materials so that learning is more teacher-centered. Meanwhile, the demand for the Emancipated Curriculum is that learning must be student-centered. This study aimed to develop learning tools for PjBL-based teaching module on the Creativity and Entrepreneurship Product subjects. This research was a research and development using the ADDIE development model. There were 12 experts who validated this module from 3 aspects, including material, media and model, and language aspects, and 30 students as participants for pilot study. The results of this research showed that this module is valid and has positive effects in supporting the learning process for the Creativity and Entrepreneurship Product subjects. This study brings pedagogical implications for the effectiveness of Creativity and Entrepreneurship Product subjects and is a method that can be implemented by teachers in the subject learning
Analysis of air pollution distribution in West Pasaman Regency effects of palm oil mills
Full text linkThe purpose of this research was to identify sources of pollution and analyze the level of pollution for the parameters of TSP (Dust), particulates, NO2, and SO2 and to map their distribution. The research was conducted at 9 (nine) palm oil mills spread throughout West Pasaman Regency. The data used are primary and secondary data. The primary data includes particulates, TSP, SO2, and NO2 gases. Secondary data consists of test results data at the Environmental Service in 2017, morphological data, and factory location maps. Data processing methods include statistical analysis of Shapiro Wilk. Then proceed with descriptive analysis to determine the characteristics of the range of minimum and maximum values of air pollution distribution. Spatial analysis of the overlay type was carried out using a GIS application. Particulate, TSP, NO2 and SO2 test results at each location have met the required air quality standards. mapping the distribution of air pollutants for the parameters TSP (Dust), NO2 and SO2 with the direction of their spread according to the wind direction. Comparison with the latest regulations, namely PP Number 22 of 2021 Appendix VII, shows that the test results are still below the set quality standards. With the test values obtained and the meteorological factors in each company, it shows that there is no significant effect of pollutant content from sources of pollution on the environment around the palm oil mills