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INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Published by Universitas Negeri Padang
ISSN : 14113414     EISSN : 25499815     DOI : -
Core Subject : Science, Engineering,
Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Transportation
INVOTEK: Jurnal Inovasi Vokasional dan Teknologi is a double blind peer-reviewed journal for Technical, Vocasional, Education and Training (VET) related research. This journal provides full open access to its content on the principle that making research freely 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 (understood in a wide sense and also known as e.g. TVET Technical Vocational Education and Training, Professional Education and Training, Career and Technical Education, Workforce Education).
Arjuna Subject : Umum - Umum
Articles 230 Documents
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Application of the Teaching Factory Model to the Learning Outcomes of Class XI Students in the Heavy Equipment Engineering Department Wagino Wagino; M Giatman; Nurhasan Syah; Iffarial Nanda
invotek Vol 22 No 2 (2022): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v22i2.1021

Abstract

The dream of a 'link and match' between schools and industry to become a reality is a big target to be achieved by the government. For that we need the support of superior human resources (HR) so that development can run well. One of the concepts of the learning approach carried out by the Ministry of Education and Culture is for schools to produce superior human resources in accordance with the needs of the industrial world through the teaching factory (TEFA) program. Recent research has demonstrated an urgent need for future engineers. This research is a continuous experimental study for 2 semesters by applying it to all samples, to see if there is a significant effect on TEFA. Research that uses the Ex-Post Facto approach. The population in this study were students of the Heavy Equipment Engineering Department at SMK Negeri 1 Guguak. The sample is class XI students of the Heavy Equipment Engineering Department who have obtained the Teaching Factory Learning Model as many as 32 people who were selected using a non-probability technique, namely Purposive Sampling. The data analysis technique used is descriptive analysis. The result of t-test is smaller than t-table (-0.381 < 1.697). This shows that the negative effect of the application of (TEFA) on the Learning Outcomes of Class XI Students in Powertrain and Undercarriage subjects is not only insignificant or very small, it can even be said to have no effect.
Turnover Intention in a Conventional Bank: How is it Related to Job Satisfaction, Job Stress, and Hijrah? Reny Soviana; Hilma Raimona Zadry; Lusi Susanti
invotek Vol 22 No 2 (2022): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v22i2.1029

Abstract

Every company activity is carried out by human resources, a valuable asset for the company. If a company has competent, loyal and tough employees, then, of course, the company’s progress can be seen more quickly. The turnover phenomenon is one of the problems that are often faced by companies, including those faced by the management of Company XYZ, a branch of banking company in West Sumatra. Thus, it is necessary to know the factors influencing turnover intention, including job satisfaction, job stress, and moving from conventional banks. This study aims to measure and analyze the effect of these three variables on employee turnover intention and analyze the critical factors at Company XYZ. Quantitative research was conducted by distributing questionnaires to the population with 99 respondents. The data analysis technique used is Structural Equation Modeling (SEM) with Smart-PLS software. The study results found that job satisfaction had a negative and insignificant effect on turnover intention. Furthermore, work stress has a positive and significant effect on turnover intention. The last variable is hijrah from conventional banks, a critical factor that positively influences turnover intention with a t-value of 6.350.
Evaluasi Displacement Horizontal Pasar Raya Padang Blok IV Berdasarkan Gaya Gempa Pada SNI-03-1732-2019 majid maulana; Eka Juliafad
invotek Vol 22 No 1 (2022): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v22i1.930

Abstract

Pasar Raya Padang Market blok IV was built in 2016 as an resisting earthquake building based on SNI-1726-2012. The building has a building dilatation with a distance of 1 cm. The purpose of this study was to evaluate the dilatation distance of the Raya Padang Blok IV market building based on the seismic forces required in SNI-1726-2019.The evaluation method used in this research is numerical analysis method by using non-linier pushover over analysis. The numerical model used 3D model with the input material and the earthquake loading according to the proposed design and the response spctrum from SNI-1726-2019. This research evaluate overall structural performance of the buildings based on ATC-40. The results of the pushover analysis of the Raya Padang Blok IV Market building are the maximum displacement of the building of 9.936 mm, the allowable displacement is 320 mm, and the shear force to occur is 1409.094 KN, while the design shear force is 1508.3265. The results of this analysis conclude that the existing dilatation distance in the existing building meet the minimum requirement need based on this study. Building performance level reachs Immidiate Occupancy Level which means the building can be functioned immideately as the eartquake ends.
The Automatic Onion Cutter Using Arduino Uno as Control System Tool Putra Jaya; Hendra Hidayat; Delsina Faiza; Almasri Almasri; Zulwisli Zulwisli; Muhammad Aidil
invotek Vol 22 No 2 (2022): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v22i2.1030

Abstract

Today's technological developments are growing rapidly, but there are still jobs that are done manually and semi-manually. This paper aims to develop a control system to coordinate the work of tools using an electric motor, which is very helpful in the process of cutting onions in large quantities and is more efficient in spending production costs because the tool designed is an automatic onion cutter. This research method begins with the collection of materials and data related to onion cutters, production of onion cutters, and testing of onion cutters. The measurement results of the tool show that every component in the automatic onion cutter works well and optimally; the measurement process is carried out properly and thoroughly. This optimal work result is supported by Arduino Uno. The Arduino Uno microcontroller acts as a tool controller. In the main system, the onion cutter is controlled by the Arduino Uno with the Arduino programming language. This automatic onion cutting system will work when the onion you want to cut has been inserted into a cross-section that has been equipped with an ultrasonic sensor, and then the onion cutting process is carried out. Compared with the manual method, the cutting time is almost the same. It's just that the advantages of slicing with this tool, the resulting slices are relatively more uniform. Besides that, another advantage is that it doesn't hurt the eyes of the onion slicer. So that this tool can be used by small entrepreneurs and onion farmers to increase productivity and the community's economy.
Adsorption of Heavy Metals Fe and Mn in Acid Mine Drainage from Coal Mining Waste Using Calcium Oxide and Fly Ash Hendra Pratama; Edy Nursanto; Rika Ernawati; Muhammad Giatman
invotek Vol 22 No 2 (2022): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v22i2.1020

Abstract

Acid mine drainage for Fe and Mn metals have a negative impact on the environment. This study studies the use of calcium oxide and fly ash as adsorbents, used to absorb Fe and Mn metals contained in acid mine drainage. This study aims to analyze the effectiveness of Calcium Oxide and fly ash as adsorbents, that an adsorbent of Fe and Mn metals in acid mine drainage. The method used is experimental with a laboratory scale, the test is carried out by adsorption using a batch system. Magnetic stirrer is used as a stirring medium in the adsorption process. Calcium oxide with various doses (0.1; 0.2; 0.3 grams) and fly ash with various doses (10; 14; 17 grams) were mixed with 250 ml acid mine drainage, then stirred at a speed of 150 rpm and (30; 60; 90 minutes) stirring time. The characterization of the adsorbent was carried out by SEM testing. The results show that fly ash adsorbent has a better adsorption effectiveness than calcium oxide. The effectiveness of Fe is 85.35% and Mn 78.14%. While calcium oxide has the effectiveness of Fe 72.91% and Mn 61.81%. SEM testing of holes that increase and enlarge after adsorption, as well as the filling of the cavity by the material indicates the success of the adsorption process.
Material Selection and Analysis of Torsional Rigidity in Formula Student SAE regulation Felix Dionisius; Imam Nur Arif; Tito Endramawan; Agus Sifa; Badruzzaman Badruzzaman
invotek Vol 22 No 2 (2022): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v22i2.1024

Abstract

The advancement of automotive technology is rapid in this era, as evidenced by the existence of autopilot vehicles that have been developed by a scientist. This progress is balanced with the knowledge that continues to develop in the world of education. Many prestigious automotive competitions are held to be a venue for student creativity and research in developing automotive technology, one of which is the Formula Student SAE. This is the background of a study to develop an engineered electric vehicle chassis, especially in Formula Student. This study aims to produce a chassis design that has torsional rigidity based on the selection of materials that have stiffness, strength, lightweight, and optimization of material cost. The structure of the vehicle was designed following Formula Student SAE regulations. To select material, initial screening was used by the Ashby method which produce 4 material types. Optimum of selecting the material used the Simple Additive Weighting (SAW) method. Meanwhile, chassis with material selected was analyzed by using Solidworks Simulation Education software. The results of this study produced Aluminum Alloys 7075-T6 material and torsional rigidity value of 552.65 x 103 Nmm/degree of chassis, which could achieve the minimum torsional rigidity value set at 500 x 103 Nmm/degree.
Development of Jogja Tourism App using GPS-Based Tracking Augmented Reality Hardika Dwi Hermawan; Azis Amirulbahar; Dita Puji Rahayu; Miftah Rizki Hanafi; Yuni Setya Ningsih; Sidik Nurcahyo
invotek Vol 22 No 2 (2022): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v22i2.1011

Abstract

The number of tourists every year continues to increase, but the pandemic resulted in tourists experiencing a decrease, and activity also prioritized social distancing. With the reduction of tourists and human interaction, media are needed to help tourists still visit Jogja by minimizing interaction. The method used to build applications in Research and Development. The first stage is the need analysis and literature study. The second stage is a design that uses use-case diagram. The third stage is implementing or developing applications and quality assurance testing. The fourth stage is the stage of testing software for users and knowing the feasibility of the application. The results showed that the results of the application work were excellent, with a percentage of 85.11%, which means the application is suitable for the Jogja Tourism App.
Effect of layer height, infill geometry, nozzle temperature, and fan speed on tensile strength of 3D printing PETG specimens Mahatma Junjung Mardlotila; Muhammad Trifiananto; Dedi Dwilaksana; Hari Arbiantara Basuki; Muh Nurkoyim Kustanto; Intan Hardiatama
invotek Vol 22 No 3 (2022): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v22i3.1045

Abstract

This research is aimed to provide insight on the dependency of tensile strength on process parameters of the Fused Deposition Modeling (FDM). FDM is one of the most popular 3D printing manufacturing techniques. In the present study, a tensile test was performed to measure the tensile strength of PETG (Polyethylene terephthalate glycol) specimen with the combination of different layer height, infill geometry, nozzle temperature, and fan speed whereas other parameters are kept at a constant level. This study uses the ISO 527 1BA standard. Taguchi L16 (44) with 4 levels for each factor was used to determine the effect of each parameter. Each experiment repeated 3 times to minimize the occurrence of errors. layer height, infill geometry, nozzle temperature, and fan speed ​​respectively effect of 13.4%, 63.6%, 19.0%, and 2.7%. Fan speed is considered a parameter that has no impact on tensile strength. The layer height and nozzle temperature parameter shows that the higher the value, the tensile strength of specimens tend to increase. Furthermore, infill geometry from the one with the highest to the lowest tensile strength value is gyroid, zig-zag, grid, and triangles. The combination of layer height of 0.24 mm, infill geometry gyroid, and nozzle temperature of 250 ˚C is the optimum combination of parameters which has the highest tensile strength of 34.76 N/mm2.
Information Technology Development in Alumni Search: Validity Analysis Muslim Muslim; M Giatman; Mukhlidi Muskhir; Hansi Effendi; Dedi Setiawan
invotek Vol 22 No 3 (2022): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v22i3.1069

Abstract

Alumni data collection activities as material for recapitulating the data needed as the completeness of accreditation documents and performance evaluation documents for tertiary institutions. This will not be achieved if the data collection is still using manual methods such as contacting the graduates one by one. This activity will take up time and the data that has been collected so far is not optimal. The purpose of conducting this research is to develop information technology in tracing graduates using the Google form at the product validity testing stage. This research is development research using 4D models. The validation test was carried out at the development stage, for this reason, the research was limited to the product development phase only. The instrument used for the validation test is in the form of a validity questionnaire for the product being developed. Questionnaires will be distributed and then the product will be validated based on the statements that have been prepared beforehand. The validators who validate the product are 4 expert lecturers. The assessment is carried out based on material aspects and media aspects. The results of product research developed with an information technology approach are in the valid category. Not until this stage, the product that has been declared valid, then revised again based on suggestions by experts. It is hoped that after obtaining validation data for the product, the next step is to carry out practicality tests and effectiveness tests so that the product can be disseminated and can be used in education, especially in the graduate study tracer at the Department of Automotive Engineering FT-UNP
Analysis of Maneuvering Speed of a Passenger Ship Scalability Prototype with a Remote-Control System Rinasa Agistya Anugrah
invotek Vol 22 No 3 (2022): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v22i3.1056

Abstract

They are using a passenger ship prototype as an experiment in control systems. Ship prototype control system with remote control. For this reason, research was carried out on the workings of ship prototypes, maneuver speed, long distance to the ship, and battery capacity expiration time. For this reason, research was carried out on how the prototype ship worked, the maneuvering speed, the remote reach distance to the boat, and the time the battery capacity would run out. The research was conducted using a rope, stopwatch, arc ruler, and test object. Using this tool, the results of the ship's speed when maneuvering at a predetermined angle, the maximum range of remote distance to the boat, and the length of time the battery capacity will run out. The research results tested on the remote control (RC) prototype ship showed the highest maneuvering speed at an angle of 90 degrees, which is 0.407 m/s, and the lowest rate at an angle of 180 degrees, 0.376 m/s. With this, it can be concluded that the smaller the angle of maneuver, the faster the speed of the ship to maneuver, and the greater the grade of the scheme, the slower the rate. Furthermore, the farther the remote control operating distance is from the battery speed, the faster the battery capacity will run out, and the closer the ship's rotational variation distance, the more the battery capacity will run out.

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