International Journal of Research in Vocational Studies (IJRVOCAS)最新文献_第8页

A Design and Build a Marketing System UMKM Sumatera Utara With the OOAD Method Approach 基于OOAD方法的UMKM苏门答腊岛营销系统设计与构建

International Journal of Research in Vocational Studies (IJRVOCAS) Pub Date : 2023-01-28 DOI: 10.53893/ijrvocas.v2i4.170

R. Anugrahwaty, Ajulio Padly Sembiring, S. Faza, Wiwin Sry Adinda Banjarnahor

引用次数: 0

Performance of Neutral Grounding Resistance and Solid Grounding on 60 MVA Power Transformer 60mva电力变压器中性点接地电阻和固体接地性能

International Journal of Research in Vocational Studies (IJRVOCAS) Pub Date : 2023-01-28 DOI: 10.53893/ijrvocas.v2i4.172

Zuraida Tharo, Amani Darma Tarigan, Siti Anisah, David Banjarnahor

引用次数: 0

Implementation of Linear Congruent Methods and Multiplication Random Numbers for Academic Potential Tests 学术潜能测试中线性同余方法与随机数乘法的实现

International Journal of Research in Vocational Studies (IJRVOCAS) Pub Date : 2023-01-11 DOI: 10.53893/ijrvocas.v2i4.160

Akbar Idaman, Roslina, Rika Rosnelly

{"title":"Implementation of Linear Congruent Methods and Multiplication Random Numbers for Academic Potential Tests","authors":"Akbar Idaman, Roslina, Rika Rosnelly","doi":"10.53893/ijrvocas.v2i4.160","DOIUrl":"https://doi.org/10.53893/ijrvocas.v2i4.160","url":null,"abstract":"APT (Academic Potential Test) is a test that aims to measure a person's ability in the academic field in general. In the implementation of the APT exam, it is carried out in the admission of new students and its application online, using a website-based application, each prospective new student will be given a login account to take the APT exam simultaneously and at a predetermined time. While the process can be accessed anywhere with an internet network. The implementation of the APT exam does not always run smoothly or well, in fact almost every time the APT exam is carried out there are problems, problems that arise because the questions given do not have differences in workmanship which causes the APT exam results to be impure and accurate. To overcome the problems that continue to occur in the implementation of the APT exam, an algorithm or method is needed that can randomize the questions in the APT exam. In this study, the Linear Congruent (LCM) and Multiplicative Random Number Generator (Multiplicative RNG) methods are random methods that are applied to randomize the APT exam questions so that the APT exam question packages can have different question positions and between question packages and the results of the application of this method will be compared to measures how complex the randomization is for each method. By using the LCM model the level of complexity of the questions increases to 100% while by using the MRNG method the level of complexity of the questions increases to 50%. \u0000 ","PeriodicalId":14205,"journal":{"name":"International Journal of Research in Vocational Studies (IJRVOCAS)","volume":"54 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78644620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

River Flood Early Warning System Based on Internet of Things in Binjai City 滨江市基于物联网的河流洪水预警系统

International Journal of Research in Vocational Studies (IJRVOCAS) Pub Date : 2023-01-11 DOI: 10.53893/ijrvocas.v2i4.161

Muhammad Rusdi, Meidi Wani Lestari, Yuvina, Fitria Nova Hulu

{"title":"River Flood Early Warning System Based on Internet of Things in Binjai City","authors":"Muhammad Rusdi, Meidi Wani Lestari, Yuvina, Fitria Nova Hulu","doi":"10.53893/ijrvocas.v2i4.161","DOIUrl":"https://doi.org/10.53893/ijrvocas.v2i4.161","url":null,"abstract":"Flood is an event of inundation of land, which is usually dry, by water originating from water sources around the land. Binjai City is an area prone to flash floods. This is because in Binjai City there are 5 (five) upstream rivers namely the Bingei river, Mencirim river, Bangkatan river, Diski river and Rambai river. A flood early warning system is a series of systems that function to notify an impending flood disaster. With the existence of a flood early warning system, it can provide information to the community and can reduce victims or losses due to the community's unpreparedness in dealing with flood disasters. This study aims to create a prototype of a river flood early warning system based on the internet of things (IoT). The method used is to design and create a flood early warning system prototype, then perform system testing. The system is designed using the Arduino Mega2560 microcontroller as the system control center, the HC-SR04 ultrasonic sensors and the ESP32-Cam camera module as system input, as well as buzzer, LCD and website as system output. The transmission medium used is wireless via a 4G WiFi Modem connected to the internet. System prototype testing will be carried out in the Bangkatan river area in Binjai City. From the results of the discussion, it was found that the river flood warning system using the HC-SR04 ultrasonic sensor and the ESP32-Cam camera module based on the Internet of Things was successfully designed and implemented in prototype form and worked well. Ultrasonic sensors work well in measuring river water level with an average error percentage of 3.642%. The ESP32-Cam camera module works well in capturing images of river water conditions up to a distance of 200 cm. (9 pt). \u0000 ","PeriodicalId":14205,"journal":{"name":"International Journal of Research in Vocational Studies (IJRVOCAS)","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87931555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Indentification of Beef in Beef and Chicken Experiments using Conducting Polymer Sensor Series and Kohonen Algorithm Method 利用导电聚合物传感器系列和Kohonen算法在牛肉和鸡肉实验中识别牛肉

International Journal of Research in Vocational Studies (IJRVOCAS) Pub Date : 2023-01-11 DOI: 10.53893/ijrvocas.v2i4.162

Benrad Edwin Simanjuntak, M. Situmorang, S. Humaidi, M. Sinambela

{"title":"Indentification of Beef in Beef and Chicken Experiments using Conducting Polymer Sensor Series and Kohonen Algorithm Method","authors":"Benrad Edwin Simanjuntak, M. Situmorang, S. Humaidi, M. Sinambela","doi":"10.53893/ijrvocas.v2i4.162","DOIUrl":"https://doi.org/10.53893/ijrvocas.v2i4.162","url":null,"abstract":"Chicken, and beef each have a distinctive aroma. Identification of Chicken and beef based on the aroma of the meat using an electronic nose. This electronic nose uses a series of sensors consisting of 6 (six) pieces and uses a Conducting Polymer. This polymer has a high resistance so it is widely used as an insulator. However, this resistance has a certain limit where the polymer surface will turn into carbon and conduct electric current if exposed to excessive electric charge. This research was conducted by taking samples of chicken and beef as test samples where these meats were placed in a closed container at room temperature. Data is taken alternately every day to find out the odor of each meat where on the first day data is taken from the odor of chicken, and on the second day data is taken from the odor of beef. This condition is done to ensure the freshness of each meat. This study uses a Neural Network (NN) as pattern recognition and ATMega16 microcontroller as data acquisition. Neural Network is trained using Kohonen. The sensor used is a Conducting Polymer sensor because of the nature of the Conducting Polymer where the output is a voltage generated due to changes in the polymer resistance resistance. A two-layer neural network consisting of six input nodes and three output neurons is trained using the Kohonen algorithm with the training process completed in 31 iterations. The test was carried out 30 times for each exposure to steam from the odor of chicken and beef which was carried out alternately. The percentage of success of the system is 100%. \u0000 ","PeriodicalId":14205,"journal":{"name":"International Journal of Research in Vocational Studies (IJRVOCAS)","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87235218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis and Computer Simulation of Biopore Tubes Made of Concrete Foam Reinforced by Durian Skin Fiber 榴莲皮纤维增强泡沫混凝土生物孔管的分析与计算机模拟

International Journal of Research in Vocational Studies (IJRVOCAS) Pub Date : 2023-01-11 DOI: 10.53893/ijrvocas.v2i4.163

B. Syam, M. Muttaqin, Fakhrur Rozy, M. Setiawan, M. Fauzi, Fadly A Kurniawan

引用次数: 0

Rainfall Mapping in Medan Selayang Sub-District using Geographic Information System 基于地理信息系统的棉兰市色拉阳街道降雨制图

International Journal of Research in Vocational Studies (IJRVOCAS) Pub Date : 2023-01-11 DOI: 10.53893/ijrvocas.v2i4.164

Dina Tri Septiningtiyas, Rifka Ananda

{"title":"Rainfall Mapping in Medan Selayang Sub-District using Geographic Information System","authors":"Dina Tri Septiningtiyas, Rifka Ananda","doi":"10.53893/ijrvocas.v2i4.164","DOIUrl":"https://doi.org/10.53893/ijrvocas.v2i4.164","url":null,"abstract":"Indonesia is a tropical country which has two seasons, namely the rainy season and the dry season. Rainfall that occurs will vary in each area depending on the altitude of the area, climate, season, and other factors. Medan Selayang Subdistrict is the Subdistrict with the closest distance to the rain station. Where the closer the location of the study area to the rain station, the more accurate the rainfall data obtained will be. One way to make it easier to record and process data is to create a rainfall map by utilizing spatial analysis through a Geographic Information System (GIS). The data in this study are rainfall data and geographic coordinate data obtained from the Meteorology, Climatology and Geophysics Agency in the Medan City area. After data collection, data processing was carried out using the QGIS 3.10 application. with the Inverse Distance Weighted (IDW) interpolation method. From the results of processing rainfall maps in the Medan Selayang sub-district using Inverse Distance Weighted (IDW) interpolation, the rainfall values (rainfall) ranged from 3029.74 mm/year – 3164.20 mm/year. \u0000 ","PeriodicalId":14205,"journal":{"name":"International Journal of Research in Vocational Studies (IJRVOCAS)","volume":"118 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84934848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of Grey Forecasting Model: Study Case for Electrification Rate in Indonesia from 2012 to 2021 灰色预测模型的评估:以印尼2012 - 2021年电气化率为例

International Journal of Research in Vocational Studies (IJRVOCAS) Pub Date : 2023-01-10 DOI: 10.53893/ijrvocas.v2i4.157

Mufrida Zein, Muhammad Ghalih, Rina Pebriana

引用次数: 1

Performance Test of 1500 cc Fuel Motorcycle Using Pertalite – Bioethanol Mixture Fuel on Exhaust Gas 使用Pertalite - Bioethanol混合燃料的1500cc燃油摩托车废气性能试验

International Journal of Research in Vocational Studies (IJRVOCAS) Pub Date : 2023-01-10 DOI: 10.53893/ijrvocas.v2i4.159

Nelson Manurung, M. A. Pulungan, Billy Christian Manurung, Enzo W. B Siahaan, S. Siahaan

{"title":"Performance Test of 1500 cc Fuel Motorcycle Using Pertalite – Bioethanol Mixture Fuel on Exhaust Gas","authors":"Nelson Manurung, M. A. Pulungan, Billy Christian Manurung, Enzo W. B Siahaan, S. Siahaan","doi":"10.53893/ijrvocas.v2i4.159","DOIUrl":"https://doi.org/10.53893/ijrvocas.v2i4.159","url":null,"abstract":"The increasing world oil prices followed by the increasing demand for fossil fuels as well as the issue of the energy crisis and global warming which demands a better level of environmental quality have encouraged the government to take good policies in overcoming them. Currently the world has been thinking about alternative energy that can be used for diesel or otto motors. One of the alternative fuels developed is alcohol fuel. Alcohol is a type of hydrocarbon in which one of the hydrogen atoms is replaced by the hydroxyl radical OH. Many agricultural products in Indo-nesia have the potential to be developed as bioethanol. In this study, the effect of adding bioethanol on pertalite fuel will be studied. This is because pertalite is a fuel that is in accordance with the demands of automotive needs and developments. This study aims to determine the comparison of power, torque, and air-fuel ratio as well as to determine the comparison of the content of exhaust gas compounds tested on the Toyota Vios Limo 1500CC car using pertalite (E0) fuel, 10% pertalite-bioethanol mixture (E10). and 15% (E15), 20% (E20). The test results obtained that the calorific value of Pertalite fuel is 49411.98 kJ/kg, 10% gasohol has a value of 46764.82 kJ/kg, 15% gasohol has a value of 44262.82 kJ/kg, and then 20% gasohol has a val-ue of 45735.42 kJ/kg. The test results obtained an average torque and power per-formance of 10% gasohol fuel of 109.09 Nm and 71.73 HP. The highest air-fuel ratio in fuel but the table shows the highest air-fuel ratio in 15% gasohol fuel is 15.46 and then the lowest air-fuel ratio in 10% gasohol fuel is 11.58. Exhaust emis-sion levels for each compound tested for each fuel are still below the standard vehicle exhaust emission thresholds set by Toyota and the environmental agency.","PeriodicalId":14205,"journal":{"name":"International Journal of Research in Vocational Studies (IJRVOCAS)","volume":"109 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79234164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of Tensile Strength on ST.37 Material with SMAW Welding Variations of SAE 10 Oil and Water Cooling ssa10油水冷却条件下ST.37材料SMAW焊接抗拉强度变化分析

International Journal of Research in Vocational Studies (IJRVOCAS) Pub Date : 2023-01-10 DOI: 10.53893/ijrvocas.v2i4.158

Efrata Tarigan, A. Sebayang, Liwat Tarigan, Benar Surbakti, Piktor Tarigan

{"title":"Analysis of Tensile Strength on ST.37 Material with SMAW Welding Variations of SAE 10 Oil and Water Cooling","authors":"Efrata Tarigan, A. Sebayang, Liwat Tarigan, Benar Surbakti, Piktor Tarigan","doi":"10.53893/ijrvocas.v2i4.158","DOIUrl":"https://doi.org/10.53893/ijrvocas.v2i4.158","url":null,"abstract":"In welding work must pay attention to the suitability of the welding construction in order to achieve optimal results. For this reason, welding needs to pay attention to several important things including welding efficiency, energy savings, and of course low costs. The purpose of this study was to determine how the tensile strength of the ST 37 material welded by SMAW welding which was cooled with a variety of cooling media, oil and pure water. The research method used in this research is to use real experimental research methods (True Experimental Research). From the results of the study, it can be concluded that the highest Ultimate Stress (Tu) tensile strength value is when the material is cooled with oil media, where the highest value is 365.15 N/mm2, followed by water cooling media oil, where the highest value is of 347.75 N/mm2, and the lowest is without cooling media where the highest value is 343.35 N/mm2. This is due to the thermal cycle that affects the microstructure of the material, this is what causes the tensile strength of the material to increase when a cooling medium is applied to the ST 37 welding material. \u0000 ","PeriodicalId":14205,"journal":{"name":"International Journal of Research in Vocational Studies (IJRVOCAS)","volume":"121 8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84087831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0