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International Journal of Research in Vocational Studies (IJRVOCAS)
Published by Yayasan Ghalih Pelopor Pendidikan
ISSN : 27770168     EISSN : 27770141     DOI : https://doi.org/10.53893/ijrvocas.v1i1
Core Subject : Economy, Science, Education, Social, Engineering,
Aerospace Engineering Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other
The International Journal of Research in Vocational Studies (IJRVOCAS) is a double-blind peer-reviewed journal. This journal provides full open access to its content on the principle that making research freely and independently available to the science community and the public supports a greater global exchange of knowledge and the further development of expertise in the field of vocational education and training (VET). IJRVOCAS is since the beginning independent from any non-scientific third-party funding. The establishment of the journal was supported between 2015 and 2016 with grants from the Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation). All members of IJRVOCAS work on an honorary basis. The journal is hosted by Ghalih Publishing and the publishing house of the Ghalih Academic. Scope IJRVOCAS covers all topics of VET-related research from pre-vocational education (PVE), initial vocational education and training (IVET) and career and technical education (CTE) to workforce education (WE), human resource development (HRD), professional education and training (PET) and continuing vocational education and training (CVET).
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 11 Documents
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Search results for , issue "Vol. 3 No. 3 (2023): IJRVOCAS - December" : 11 Documents clear
How Work Duration, Job Satisfaction, and Life Satisfaction Effect Organizational Citizenship Behavior (OCB) In Taiwan: Case of Indonesian Migrant Worker Elvina, Yuli; Hsu, Chiehwen Ed; Chang, Yung‐Chi
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 3 No. 3 (2023): IJRVOCAS - December
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v3i3.25

Abstract

The existing literature indicates that Organizational Citizenship Behavior (OCB) is closely linked to employment and can significantly affect organizational effectiveness, including its adaptability to changing environments and its ability to attract potential talent. This study investigates the potential correlation between job satisfaction, life satisfaction in the workplace, and OCB among Indonesian migrant workers in Taiwan. The study's primary objectives were twofold: to investigate the contributions of job satisfaction and life satisfaction toward fostering Organizational Citizenship Behavior (OCB) within Taiwanese companies, particularly those managing human resources. Furthermore, the research aimed to pinpoint areas for potential enhancement of OCB and better comprehension of the underlying factors influencing these behaviors. This understanding would be particularly beneficial in cultivating employee loyalty, especially among migrant workers from Indonesia. The sample for this study was drawn from major Taiwanese cities, including Taipei, Taichung, Tainan, Kaohsiung, and Chiayi. The research outcomes underscored a substantial impact stemming from both job satisfaction and life satisfaction on OCB. In particular, job satisfaction was found to exhibit a direct and positive correlation with OCB. Furthermore, the duration of employment was positively correlated with both job satisfaction and life satisfaction.
Tofu Wastewater Treatment Using Biocoagulant Moringa Seed Powder (Moringa Oleifera L) Nora, Fitrisia; Marhadi; Adriansyah, Endi; Suzana, Asih; Pramono, M. Sidik; Sufra, Rifqi; Syaiful, M.
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 3 No. 3 (2023): IJRVOCAS - December
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v3i3.211

Abstract

Indonesia has various types of vegetation which are used as natural coagulants or biocoagulants. Coagulants can be divided into chemical coagulants and natural coagulants (biocoagulants). Biocoagulants are more environmentally friendly and can be obtained from natural ingredients, both animals and plants, one of which is Moringa seeds. Moringa seeds or with the Latin name Moringa oleifera are a type of plant from the Moringaceae family. From several previous studies, Moringa seeds were used as a more economical and environmentally friendly wastewater treatment method. Moringa seed biocoagulant in powder form is made from ripe and old moringa seeds and contains less than 10% water. Moringa seed biocoagulant contains 4αL-rhamnosyloxy-benzylisothiocyanate and is a determinant of coagulation effectiveness. This active substance is able to absorb pollutants in waste water. This research aims to treat tofu waste with moringa seed biocoagulant in reducing pollutant parameters, namely TSS (Total Suspended Solid) and COD (Chemical Oxygen Demand). Results of the removal of pollutants from moringa seed powder biocoagulant in tofu waste water the efficiency value obtained for each TSS parameter, and the COD for the TSS parameter is 54.4%. and for the COD parameter of 14.6%, it can be concluded that the efficiency value for each parameter still does not meet the effectiveness value.
Analysis of River Flow Velocity Using Current Meter with Six-Tenths Method and Two-Point Method (Case Study of Ampal River, Balikpapan City) Giarto, Rahmat Bangun; Kiptiah, Mariatul; Pradana, Ryan
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 3 No. 3 (2023): IJRVOCAS - December
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v3i3.212

Abstract

Rivers have cross-sectional sizes in the form of longitudinal profiles, valley slopes, and cross sections. The size can change according to the base material, cliffs, and water discharge so each river has different characteristics. The flow velocity will affect the flow rate. This study aims to determine the flow velocity of the Ampal River and determine the differences between the methods used. Measurement of flow velocity in this study using a current meter with the six-tenths method and the two-point method. The fastest flow velocity obtained on average is at the point z/b = 0.5 or in the middle of the river, with the maximum speed being at Cross Section 4, with a depth of 1.29 m and a speed of 0.474 m/s.
Determinants of Repayment Performance of Agricultural Loans Clients of RBDI, Abuyog Branch Loreño, Dustin; Teves, Joviel
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 3 No. 3 (2023): IJRVOCAS - December
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v3i3.213

Abstract

The study aimed to present the profile of the agricultural loan clients of RBDI, describe the loan assessment process, describe the loan monitoring process in RBDI, identify the determinants of loan repayment performance of RBDI agricultural loan clients and to recommend courses of action to improve loan application assessment, loan monitoring, and loan collection activities of RBDI. The study used the Logit Regression Analysis and the model Y = β0 + β1X1 + β2X2 + β3X3 + β4X4 + . . . . . . . βnXn + e was developed. The binary response is non-payment (default) and payment (non-default). The determinants were the socio-demographic and socio-economic characteristics of the agricultural loan clients, as well as the loan application and monitoring activities of the bank. The profile of the agricultural loan clients of RBDI showed commonalities of the clients in terms of age (63% are above 45 years old), most of them were not able to finish college (53% secondary level) and most are married (77%) with more than 3 dependents (73%).  Age was determined as a statistically significant factor affecting the non-payment or loan default. The increase in family size and schooling dependents also raises the probability of default. The result that higher educational level and increase in dependents reduces the probability of default has to be further verified. As the size of land increases and the farming experience increases, the probability of loan default decreases.
Performance Test of the Molecularly Imprinted Polymer (MIP) Endosulfan Sensor Potentiometrically Bow, Yohandri; Syakdani, Adi; Purnamasari, Indah; Rusdianasari
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 3 No. 3 (2023): IJRVOCAS - December
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v3i3.220

Abstract

Molecularly Imprinted Polymer (MIP) is a synthetic polymer with cavities that are specific for target molecules. Cavities are obtained as a result of template removal, where the function of these cavities is to recognize molecules with the same size, structure and physicochemical properties as them. The polymer produced from the MIP technique is applied to the surface of the sensor material as an endosulfan detection and analyzing instrument. The advantage of MIP is that it is a sensor system that is able to provide analysis results for contamination quickly, easily and in low concentrations (ppm). The aim of this research is to make MIP endosulfan as a contamination sensor and potentiometrically test its performance. The research results showed that the optimum conditions for making Molecularly Imprinted Polymer (MIP) endosulfan were obtained with a composition of 6.02 mL of chloroform; endosulfan 0.025 g; 0.9 mL methacrylic acid (MAA); 1.57 mL ethylene glycol methacrylic acid (EGMA); 0.07 g benzoyl peroxide (BPO) with a heating time of 150 minutes at a temperature of 70 oC. The sensor performance test was carried out potentiometrically and it was found that the endosulfan MIP sensor had sensitivity and stability in the concentration range of 0.01-1.0x10-6 ppm with a detection limit of 0.01x10-6 ppm and a service life of 90 days.
Cross-flow Turbine Design with Taguchi Method Approach Wijaya Pratama, Agung; Arifin, Fatahul; Dewi, Tresna
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 3 No. 3 (2023): IJRVOCAS - December
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v3i3.222

Abstract

The current energy demand is very large, while the use of energy, which mostly uses petroleum and coal, is not matched by the availability of energy sources. For this reason, it is necessary to conduct research on alternative energy in order to provide energy security in the future. One alternative energy is water energy, which uses water turbines. This study aims to determine the optimum conditions for design parameters for static pressure and magnitude speed in crossflow water turbine design. The testing was done using finite element method simulation, namely Autodesk CFD. Taguchi methodology analysis is used as an optimization method. The number of blades, blade angle, and water direction angle were set as design parameters with constant water discharge parameters. The resulting static pressure and magnitude velocity were observed as design criteria. The results of the Taguchi method analysis in this study show that the optimum static pressure received from the water turbine is at the number of blades, with 10 blades, a blade angle of 22°, and a water direction angle of 60°. While the optimum velocity of the water turbine is at the number of blades of 6, the blade angle is 20°, and the water direction angle is 60°.
A Comparative Analysis of the Influence of Temperature and Wind Speed on the Efficiency of 100 WP Solar Panels of Monocrystalline and Polycrystalline Types at Sriwijaya State Polytechnic Nurhaida; Susanti, Indah; Puspitasari, Dela Urbach
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 3 No. 3 (2023): IJRVOCAS - December
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v3i3.225

Abstract

Solar panels in PLTS convert photon energy into electrical energy, where sunlight, which produces light intensity, plays a very important role. In this case, environmental conditions that continue to change can affect the output power of the solar panels. Apart from light intensity, solar panel environmental conditions such as temperature and wind speed greatly affect the efficiency of solar panels. This research looks at the extent of the influence of temperature and wind on the efficiency of solar panels. From the test results and calculations, it was found that the sample temperature of the monocrystalline panel measured on Friday, June 16, 2023, was 31.5°C, and the temperature of the polycrystalline panel was 31°C. From various aspects of the calculations carried out, we can see that the efficiency of monocrystalline panels is 18.07%, while the efficiency of polycrystalline panels is 16.04%. From the calculation results, we can conclude that the efficiency of monocrystalline modules increases significantly.
Monitoring Tool for Electricity Usage in Residential Homes Based on the Internet of Things (IoT) Using BLYNK Application Nofiansah; Marniati, Yessi; Rumiasih; Yahya, Sudirman; Yani, Herman; Bofynna, Pio Agma
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 3 No. 3 (2023): IJRVOCAS - December
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v3i3.226

Abstract

Electricity is a basic need of human beings. The consumption of electricity usage is getting bigger and bigger. Electricity usage is usually wasteful due to lack of public awareness and ineffective use of electricity. With this problem, the author aims to design loT-based electric power usage monitoring system in home electrical appliances. This tool is designed using sensors to detect the value of the voltage and current of the load attached to the electricity but still using the BLYNK application as a server and application to monitor the use of electric power through a smartphone application. The measurement results include the data of current, voltage, and electrical power used. This system can also remotely switch appliances ON/OFF. The test was conducted by comparing the results of the power value from the power meter with the power value in BLYNK application. After the test, the results of the comparison between the monitoring tool and the power meter measuring instrument obtained an average power error value of 0.5%. So that the accuracy value of the tool can also be 99.5%. With a large accuracy value, it means that the tool works well and can be used to monitor the use of electrical energy in households.
Use of DC Motor Control in Development of Pipe Welding Technology by Using the GMAW Process for Variation of Welding Nozzle Movement Toruan, Henry Hasian Lumban; Ginting, Berta Br.; Simanjuntak, Melvin Emil; Pakpahan, Binsar Maruli Tua; Sitorus, M.B.H.; Hutajulu, Elferida; Junaidi
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 3 No. 3 (2023): IJRVOCAS - December
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v3i3.227

Abstract

Gas Metal Arc Welding (GMAW) welding technology is a welding method that is widely used in industry. A problem that often occurs is that it is difficult for a welder to control the speed of movement of the welding nozzle, which can affect the quality of the welding results. With welding tools that can control the movement of the welding nozzle, this problem can be overcome and increase the efficiency and productivity of the welding manufacturing process. The method for testing the quality of welding results is analyzed visually using the visual test and penetrant test methods. The use of GMAW welding tools for pipe butt joints using DC motor control to vary the movement of the welding nozzle is effective, making it easier for the welder and good welding results. Good welding results were obtained for setting the welding nozzle movement time in 1.4 seconds and 1 second for one left and right the movement cycle on a pipe joint rotating at a constant speed of 24 rpm. Setting the time for the welding nozzle movement in 0.6 seconds for one cycle of left and right movement produces poor welding in pipe joints that rotate at the same speed.
Student Perceptions toward Eight Forms of Independent Learning Activities in Independent Learning Independent Campus Program (MBKM) Aryanti, Nurul; Ardiansyah, Welly; Izzah; Septi Anggaira, Aria
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 3 No. 3 (2023): IJRVOCAS - December
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v3i3.233

Abstract

Exploring educational opportunities beyond the official curriculum and campus environment is a means for students to enhance the competencies of future graduates who can thrive in both national and international industrial settings. This study's objective is to assess students' awareness and engagement with the Independent Learning Independent Campus Program (MBKM) policy and its consequences. The research methodology employed in this study involves a survey using descriptive analysis techniques. The study involved 350 undergraduate students as participants, and data collection was conducted through a questionnaire comprising two sections: one for capturing respondent demographics and the other for inquiring about their perspectives on the Independent Learning Independent Campus Program (MBKM) policy. The study's findings suggest that students exhibit a considerable level of awareness regarding the Independent Learning Independent Campus Program (MBKM) policy, and their participation is also notably high. Moreover, the feedback regarding the impact of the MBKM policy on students is positively inclined. This positive response is rooted in the advantages offered by the MBKM program, such as enhanced learning experiences, the allocation of 20 credits, and the development of soft skills. Consequently, the MBKM policy holds the potential to encourage greate.r student involvement in extracurricular learning activities outside the official curriculum and campus. Hence, the outcomes of this study carry several important implications. First, because students are so aware of the MBKM policy, they will continue to attend the program with great enthusiasm. Second, because there is a lot of student interest in the Independent Learning Independent Campus Program (MBKM) program, the quality of learning that takes place off campus will improve. Third, the study program will successfully maintain the Independent Learning Independent Campus Program (MBKM) program. This is based on the advantages of the Independent Learning Independent Campus Program (MBKM) program, which can offer a variety of skills, knowledge of different cultures, and adaptability, including leadership skills.

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