Pub Date : 2023-01-29DOI: 10.35970/infotekmesin.v14i1.1751
Laura Sari, Annisa Romadloni, R. Listyaningrum
Cancer is the second highest cause of death in the world. In Indonesia, it is a disease with a high mortality rate. Most patients do not realize that they have lung cancer thus the treatment is sometimes too late. A prediction method with a high degree of accuracy is needed to detect lung cancer earlier. Previous research used data mining calcification methods with the Naïve Bayes algorithm to predict lung cancer. This research resulted in high recall values for the positive class (Yes class) but low for the negative class (No class). This research was made using the Random Forest algorithm which is known to have good performance. The modeling is optimized by applying the K-fold Cross Validation technique. The Random Forest algorithm produces a higher Accuracy value than the Naïve Bayes algorithm, which is 98.4%. This algorithm produces 100% Recall for the positive class, 80% for the negative class and provides a 100% correct prediction as can be seen from the AUC value of 1. Although a statistical test with a significance level of 5% shows the results of the two algorithms are not significantly different.
{"title":"Penerapan Data Mining dalam Analisis Prediksi Kanker Paru Menggunakan Algoritma Random Forest","authors":"Laura Sari, Annisa Romadloni, R. Listyaningrum","doi":"10.35970/infotekmesin.v14i1.1751","DOIUrl":"https://doi.org/10.35970/infotekmesin.v14i1.1751","url":null,"abstract":"Cancer is the second highest cause of death in the world. In Indonesia, it is a disease with a high mortality rate. Most patients do not realize that they have lung cancer thus the treatment is sometimes too late. A prediction method with a high degree of accuracy is needed to detect lung cancer earlier. Previous research used data mining calcification methods with the Naïve Bayes algorithm to predict lung cancer. This research resulted in high recall values for the positive class (Yes class) but low for the negative class (No class). This research was made using the Random Forest algorithm which is known to have good performance. The modeling is optimized by applying the K-fold Cross Validation technique. The Random Forest algorithm produces a higher Accuracy value than the Naïve Bayes algorithm, which is 98.4%. This algorithm produces 100% Recall for the positive class, 80% for the negative class and provides a 100% correct prediction as can be seen from the AUC value of 1. Although a statistical test with a significance level of 5% shows the results of the two algorithms are not significantly different.","PeriodicalId":33598,"journal":{"name":"Infotekmesin Media Komunikasi Ilmiah Politeknik Cilacap","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49142502","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}
Pub Date : 2023-01-29DOI: 10.35970/infotekmesin.v14i1.1737
Syarifudin Syarifudin, Eflita Yohana, M. Muchammad, Suhartana Suhartana, Faqih Fatkhurrozak, Firman Lukman Sanjaya, M. T. Qurohman
Ethanol has higher octane and oxygen properties than fossil-fuel gasoline. Along with the increase in gasoline dependency and exhaust emissions, the use of ethanol as a fuel is urgently studied. This study aimed to observe the concentration of 5% ethanol in gasoline on the performance and exhaust emissions of a 150cc gasoline engine that was operated at 1000, 2000, and 3000rpm. The observation results show that the concentration of 5% ethanol in gasoline correlates with an increase in performance with indications of an increase in EGT, Brake power, BTE, and a decrease in SFC. On the emission side, it is also correlated with an increase in the quality of exhaust emissions with indications of increased CO2 emissions and reduced CO and HC emissions. The best correlation of 5% ethanol concentration was obtained at an operating speed of 2000rpm with an increase in EGT of 10.70%, an increase in Brake power of 9.49%, an increase in BTE of 38.62%, an increase in CO2 emissions of 23.06%, a decrease in SFC of 26 .49%, CO emission reduction of 16.67%, and HC emission reduction of 4.24%.
{"title":"Korelasi Konsentrasi Etanol 5% Pada Bahan Bakar Gasolin Terhadap Performa, dan Emisi Gas Buang Mesin Bensin 150cc","authors":"Syarifudin Syarifudin, Eflita Yohana, M. Muchammad, Suhartana Suhartana, Faqih Fatkhurrozak, Firman Lukman Sanjaya, M. T. Qurohman","doi":"10.35970/infotekmesin.v14i1.1737","DOIUrl":"https://doi.org/10.35970/infotekmesin.v14i1.1737","url":null,"abstract":"Ethanol has higher octane and oxygen properties than fossil-fuel gasoline. Along with the increase in gasoline dependency and exhaust emissions, the use of ethanol as a fuel is urgently studied. This study aimed to observe the concentration of 5% ethanol in gasoline on the performance and exhaust emissions of a 150cc gasoline engine that was operated at 1000, 2000, and 3000rpm. The observation results show that the concentration of 5% ethanol in gasoline correlates with an increase in performance with indications of an increase in EGT, Brake power, BTE, and a decrease in SFC. On the emission side, it is also correlated with an increase in the quality of exhaust emissions with indications of increased CO2 emissions and reduced CO and HC emissions. The best correlation of 5% ethanol concentration was obtained at an operating speed of 2000rpm with an increase in EGT of 10.70%, an increase in Brake power of 9.49%, an increase in BTE of 38.62%, an increase in CO2 emissions of 23.06%, a decrease in SFC of 26 .49%, CO emission reduction of 16.67%, and HC emission reduction of 4.24%.","PeriodicalId":33598,"journal":{"name":"Infotekmesin Media Komunikasi Ilmiah Politeknik Cilacap","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43807137","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}
Pub Date : 2023-01-29DOI: 10.35970/infotekmesin.v14i1.1753
Ulikaryani Ulikaryani, Jenal Sodikin, Nur Akhlis Sarihidaya Laksana, Unggul Satria Jati, Ari Kristiningsih
Apart from using silicon material, thin-layer solar cells can be made from various types of semiconductor materials, such as a combination of groups III and VI. In solar cell applications, these materials are usually used as n-type coatings. This study not only aimed to determine the crystal structure and the effect of annealing temperature on the crystal lattice parameters but also to determine the chemical composition and surface morphological structure of the crystals formed from the preparation. The crystal growth process was carried out using the Bridgman method with different heating patterns. The temperature in both annealing temperatures is 200oC and 250oC. The physical properties of the prepared In2Se3 crystals were characterized using XRD, SEM, and EDAX. XRD Characterization was used to determine the crystal structure, while SEM and EDAX characterization was used to determine the surface morphology and chemical composition of the crystals. The result of the XRD characterization showed that the formed In2Se3 crystals were polycrystals with a hexagonal structure. Based on the diffractogram obtained, the In2Se3 crystalline heating 1 has better quality. EDAX analysis showed that the In2Se3 crystals were composed of elements of In and Se with a mole ratio of 2:9, while the SEM characterization showed that the color of the surface morphology of the In2Se3 crystals was not homogeneous.
{"title":"Karakteristik Struktur Kristal In2Se3 Hasil Preparasi Dengan Metode Bridgman","authors":"Ulikaryani Ulikaryani, Jenal Sodikin, Nur Akhlis Sarihidaya Laksana, Unggul Satria Jati, Ari Kristiningsih","doi":"10.35970/infotekmesin.v14i1.1753","DOIUrl":"https://doi.org/10.35970/infotekmesin.v14i1.1753","url":null,"abstract":"Apart from using silicon material, thin-layer solar cells can be made from various types of semiconductor materials, such as a combination of groups III and VI. In solar cell applications, these materials are usually used as n-type coatings. This study not only aimed to determine the crystal structure and the effect of annealing temperature on the crystal lattice parameters but also to determine the chemical composition and surface morphological structure of the crystals formed from the preparation. The crystal growth process was carried out using the Bridgman method with different heating patterns. The temperature in both annealing temperatures is 200oC and 250oC. The physical properties of the prepared In2Se3 crystals were characterized using XRD, SEM, and EDAX. XRD Characterization was used to determine the crystal structure, while SEM and EDAX characterization was used to determine the surface morphology and chemical composition of the crystals. The result of the XRD characterization showed that the formed In2Se3 crystals were polycrystals with a hexagonal structure. Based on the diffractogram obtained, the In2Se3 crystalline heating 1 has better quality. EDAX analysis showed that the In2Se3 crystals were composed of elements of In and Se with a mole ratio of 2:9, while the SEM characterization showed that the color of the surface morphology of the In2Se3 crystals was not homogeneous.","PeriodicalId":33598,"journal":{"name":"Infotekmesin Media Komunikasi Ilmiah Politeknik Cilacap","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42709546","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}
Pub Date : 2023-01-29DOI: 10.35970/infotekmesin.v14i1.1656
Didik Sugiono, Aini Lostari, Novi Indah Riani, Aries Kusdyanto
The ignition system is a system that greatly affects the performance of a vehicle. Capacity Discharge Ignition (CDI) is a component in the ignition system that works to set the right ignition timing, therefore combustion can be maximized. This study aimed to compare the use of a factory CDI with a CDI from another vehicle, namely the 110 cc Shogun, to determine the performance of a 125 cc GL Max motorbike including torque, power, and fuel consumption to efficiency. The data collection was carried out at speeds of 25 km/hour to 65 km/hour for each gear with an increase of 10 km/hour. The results showed that the larger the gear or teeth, the value of torque, power, and efficiency will also increase. The best results were obtained in the 110 cc Shogun CDI variation with respective values of 7.96 Nm, 6.8 pk, and 81.14%. Meanwhile, the value of the most economical fuel consumption is still the standard CDI GL Max 125 cc with a value of 0.12 kg/pk.hour in the highest gear.
点火系统是一个对车辆性能影响很大的系统。容量放电点火(CDI)是点火系统的一个组成部分，它的工作是设置正确的点火时间，因此燃烧可以最大化。本研究旨在比较工厂CDI与另一辆车(即110 cc Shogun) CDI的使用情况，以确定125 cc GL Max摩托车的性能，包括扭矩，功率和燃油消耗效率。数据收集以每档25公里/小时至65公里/小时的速度进行，每档速度增加10公里/小时。结果表明，齿轮或齿数越大，转矩、功率和效率的值也越大。以110 cc的Shogun CDI品种为最佳，分别为7.96 Nm、6.8 pk和81.14%。同时，最经济的油耗值仍然是标准的CDI GL Max 125 cc，值为0.12 kg/pk。小时在最高档位。
{"title":"Studi Eksperimental Pengaruh Variasi CDI Terhadap Performa Kendaraan Empat Langkah","authors":"Didik Sugiono, Aini Lostari, Novi Indah Riani, Aries Kusdyanto","doi":"10.35970/infotekmesin.v14i1.1656","DOIUrl":"https://doi.org/10.35970/infotekmesin.v14i1.1656","url":null,"abstract":"The ignition system is a system that greatly affects the performance of a vehicle. Capacity Discharge Ignition (CDI) is a component in the ignition system that works to set the right ignition timing, therefore combustion can be maximized. This study aimed to compare the use of a factory CDI with a CDI from another vehicle, namely the 110 cc Shogun, to determine the performance of a 125 cc GL Max motorbike including torque, power, and fuel consumption to efficiency. The data collection was carried out at speeds of 25 km/hour to 65 km/hour for each gear with an increase of 10 km/hour. The results showed that the larger the gear or teeth, the value of torque, power, and efficiency will also increase. The best results were obtained in the 110 cc Shogun CDI variation with respective values of 7.96 Nm, 6.8 pk, and 81.14%. Meanwhile, the value of the most economical fuel consumption is still the standard CDI GL Max 125 cc with a value of 0.12 kg/pk.hour in the highest gear.","PeriodicalId":33598,"journal":{"name":"Infotekmesin Media Komunikasi Ilmiah Politeknik Cilacap","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46190076","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}
Pub Date : 2023-01-26DOI: 10.35970/infotekmesin.v14i1.1632
Aswan Munang, Dina Rachmawaty, Arif Reza Basirun
Product development is a combination of technological trends that play a role in creating innovative works. Conceptual design is the initial phase of developing innovative product configurations. The processing of coconut sap into traditional palm sugar has constraints; the production process takes 4 to 6 hours and has a moisture content above 3%. The research objective was to obtain a machine design to increase production volume and reduce the water content in palm sugar. The machine design process begins with conducting interviews with 20 palm sugar craftsmen with approximately 5 years of experience to obtain information on priority needs. The VOC (Voice Of Customer) method can be used to determine priority designs and specifications. The results of the VOC process are (1) machine components made of food-grade materials, (2) production machines that are easy to operate and easy to maintain, (3) production machines with operational costs and affordable prices among MSMEs. The design development process has two alternative machines made using the Solidworks software. The results of the assessment of 30 SMEs’ palm sugar selected alternative two machine designs with dimensions of 70 x 60 x 155 cm. The advantage of the second engine design alternative is that it has a temperature sensor to adjust the gas valve and a pan with an insulator so that it can maintain temperature stability. The design of the palm sugar machine still requires innovation and development to increase production and quality.
产品开发是技术趋势的结合，在创造创新作品中发挥作用。概念设计是开发创新产品配置的初始阶段。将椰子汁加工成传统的棕榈糖受到限制；生产过程需要4到6个小时，并且具有3%以上的水分含量。研究目的是获得一种增加生产量并降低棕榈糖含水量的机器设计。机器设计过程首先采访20名具有约5年经验的棕榈糖工匠，以获取优先需求信息。VOC（客户声音）方法可用于确定优先设计和规范。VOC工艺的结果是（1）由食品级材料制成的机器部件，（2）易于操作和维护的生产机器，（3）具有运营成本和中小微企业可负担价格的生产机器。设计开发过程中有两台使用Solidworks软件制作的替代机器。对30家中小企业棕榈糖的评估结果选择了尺寸为70 x 60 x 155厘米的替代两种机器设计。第二种发动机设计的优点是，它有一个温度传感器来调节气阀，还有一个带绝缘体的锅，以便保持温度稳定。棕榈糖机的设计仍然需要创新和发展，以提高产量和质量。
{"title":"Desain Mesin Pembuatan Gula Semut Berbahan Dasar Nira Kelapa Skala UMKM","authors":"Aswan Munang, Dina Rachmawaty, Arif Reza Basirun","doi":"10.35970/infotekmesin.v14i1.1632","DOIUrl":"https://doi.org/10.35970/infotekmesin.v14i1.1632","url":null,"abstract":"Product development is a combination of technological trends that play a role in creating innovative works. Conceptual design is the initial phase of developing innovative product configurations. The processing of coconut sap into traditional palm sugar has constraints; the production process takes 4 to 6 hours and has a moisture content above 3%. The research objective was to obtain a machine design to increase production volume and reduce the water content in palm sugar. The machine design process begins with conducting interviews with 20 palm sugar craftsmen with approximately 5 years of experience to obtain information on priority needs. The VOC (Voice Of Customer) method can be used to determine priority designs and specifications. The results of the VOC process are (1) machine components made of food-grade materials, (2) production machines that are easy to operate and easy to maintain, (3) production machines with operational costs and affordable prices among MSMEs. The design development process has two alternative machines made using the Solidworks software. The results of the assessment of 30 SMEs’ palm sugar selected alternative two machine designs with dimensions of 70 x 60 x 155 cm. The advantage of the second engine design alternative is that it has a temperature sensor to adjust the gas valve and a pan with an insulator so that it can maintain temperature stability. The design of the palm sugar machine still requires innovation and development to increase production and quality.","PeriodicalId":33598,"journal":{"name":"Infotekmesin Media Komunikasi Ilmiah Politeknik Cilacap","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45226874","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}
Pub Date : 2023-01-26DOI: 10.35970/infotekmesin.v14i1.1564
Afrizal Abdi Musyafiq, Riyani Prima Dewi, Purwiyanto Purwiyanto, Rafiq Subarkah
Based on data from the Central Statistics Agency (BPS) for 2019, Cilacap Regency has an area of 14,000 hectares of rice farming land with a potential for harvesting up to 920,000 tons of rice, then the Binangun District area has 66.5 hectares of rice farming land with a potential of harvesting up to 32,000 tons of rice. Turning paddy into rice requires many processes, one of which is drying rice. Traditional rice drying takes a relatively long time, has an uneven moisture content, and is under an unstable temperature therefore it is necessary to develop a thin-layer method for drying rice. This study used the Rex C100 Thermocontrol as a drying temperature controller, used an Arduino Uno equipped with a BTS 7960 driver to adjust the stirring speed, and a YL-69 sensor to read the rice moisture content. Tests in this study were carried out using Inpari-32 rice with a mass of 2 Kg and a drying temperature of 50-80oC. The result of this study was that the relationship between temperature and time in drying was inversely proportional. The rice drying process uses the highest drying power of 654.5 watts while the lowest power is 467.5 watts. The lowest overall energy use was 2.05 x106 J and the highest energy was 2.60 x106 J. The highest drying rate was 0.50%bk/minute. Effective drying uses a temperature of 80oC with a time of 30 minutes to reach the store-dry rice and 70 minutes to reach the dry milled rice category.
{"title":"Unjuk Kerja Pengembangan Prototype Alat Pengering Padi Metode Thin Layer","authors":"Afrizal Abdi Musyafiq, Riyani Prima Dewi, Purwiyanto Purwiyanto, Rafiq Subarkah","doi":"10.35970/infotekmesin.v14i1.1564","DOIUrl":"https://doi.org/10.35970/infotekmesin.v14i1.1564","url":null,"abstract":"Based on data from the Central Statistics Agency (BPS) for 2019, Cilacap Regency has an area of 14,000 hectares of rice farming land with a potential for harvesting up to 920,000 tons of rice, then the Binangun District area has 66.5 hectares of rice farming land with a potential of harvesting up to 32,000 tons of rice. Turning paddy into rice requires many processes, one of which is drying rice. Traditional rice drying takes a relatively long time, has an uneven moisture content, and is under an unstable temperature therefore it is necessary to develop a thin-layer method for drying rice. This study used the Rex C100 Thermocontrol as a drying temperature controller, used an Arduino Uno equipped with a BTS 7960 driver to adjust the stirring speed, and a YL-69 sensor to read the rice moisture content. Tests in this study were carried out using Inpari-32 rice with a mass of 2 Kg and a drying temperature of 50-80oC. The result of this study was that the relationship between temperature and time in drying was inversely proportional. The rice drying process uses the highest drying power of 654.5 watts while the lowest power is 467.5 watts. The lowest overall energy use was 2.05 x106 J and the highest energy was 2.60 x106 J. The highest drying rate was 0.50%bk/minute. Effective drying uses a temperature of 80oC with a time of 30 minutes to reach the store-dry rice and 70 minutes to reach the dry milled rice category.","PeriodicalId":33598,"journal":{"name":"Infotekmesin Media Komunikasi Ilmiah Politeknik Cilacap","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41491656","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}
Pub Date : 2023-01-26DOI: 10.35970/infotekmesin.v14i1.1610
Frans Ivan Christofel Hutabarat, Andre Amba Matarru, Gad Gunawan
This study analyzes the effect of water discharge and the angle of inclination of the turbine on electrical power and efficiency using Archimedes screw turbine with two blades. This study aims to determine the effect of water discharge and the angle of inclination of the turbine on the electrical power and efficiency of the two-blade Archimedes screw turbine. The turbine is fed with water at variations of water discharge of 150 l/m, 300 l/m, 450 l/m. And vary angle of inclination of the turbine of 35°, 40°, and 45°. By using the variation of the water discharge that has been mentioned, the electrical power and efficiency obtained are 1,24 W and 9,78 % at a variation of 150 l/m, 2,89 W and 10,77 % at a variation of 300 l/m, and 3,65 W and 9,06 % at a variation of 450 l/m. When varying the angle of inclination, the electrical power and efficiency obtained are 3,33 W and 10,77 % on a slope of 35°, 3,65 W and 10,53 % on a slope of 40°, and 3,15 W and 8,6 % on a variation of 45°.
{"title":"Analisis Daya Elektrik dan Efisiensi dengan Variasi Debit Air dan Sudut Kemiringan Turbin pada Turbin Ulir Archimedes Dua Sudu","authors":"Frans Ivan Christofel Hutabarat, Andre Amba Matarru, Gad Gunawan","doi":"10.35970/infotekmesin.v14i1.1610","DOIUrl":"https://doi.org/10.35970/infotekmesin.v14i1.1610","url":null,"abstract":"This study analyzes the effect of water discharge and the angle of inclination of the turbine on electrical power and efficiency using Archimedes screw turbine with two blades. This study aims to determine the effect of water discharge and the angle of inclination of the turbine on the electrical power and efficiency of the two-blade Archimedes screw turbine. The turbine is fed with water at variations of water discharge of 150 l/m, 300 l/m, 450 l/m. And vary angle of inclination of the turbine of 35°, 40°, and 45°. By using the variation of the water discharge that has been mentioned, the electrical power and efficiency obtained are 1,24 W and 9,78 % at a variation of 150 l/m, 2,89 W and 10,77 % at a variation of 300 l/m, and 3,65 W and 9,06 % at a variation of 450 l/m. When varying the angle of inclination, the electrical power and efficiency obtained are 3,33 W and 10,77 % on a slope of 35°, 3,65 W and 10,53 % on a slope of 40°, and 3,15 W and 8,6 % on a variation of 45°.","PeriodicalId":33598,"journal":{"name":"Infotekmesin Media Komunikasi Ilmiah Politeknik Cilacap","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49508461","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}
Based on damage data owned by PT XYZ, the compressor engine that has a history of high damage is the D32 CP8 Compressor Engine. Critical components of the D32 CP 8 Compressor are determined using a risk matrix. The critical components selected from the D32 CP8 Compressor Engine are Screw Motor, Refrigerant Air Cooler, and Cylinder Bearing Oil Cooler. This study uses the Reliability Centered Spares (RCS), Min-Max Stock, and Reorder Point (ROP) methods. The data collection and processing results obtained the need for critical components in the next 1 year based on the MTTF critical component data. These calculations show that the value of the required spare parts for the Motor Screw, Refrigerant Air Conditioner, and Cylinder Bearing Oil Cooler in a year is 8 components. The minimum Stock of the Screw Motor is 3 components, the maximum stock is 8 components, ReOrder Point point is 4 components. The minimum stock of 4 component air coolers, maximum stock of 7 components, ReOrder Point when 3 components. The minimum stock of a Cylindrical Bearing Oil Cooler is 2 components, the maximum stock is 6 components, and the ReOrder Point is when there are 2 components.
{"title":"Designing The Estimation of The Need for Spare Parts and Inventory Policy on The D32 CP8 Compressor Machine","authors":"Herlambang Prasetyo Nugroho, Fransiskus Tatas Dwi Atmaji, Nopendri Nopendri","doi":"10.35970/infotekmesin.v14i1.1482","DOIUrl":"https://doi.org/10.35970/infotekmesin.v14i1.1482","url":null,"abstract":"Based on damage data owned by PT XYZ, the compressor engine that has a history of high damage is the D32 CP8 Compressor Engine. Critical components of the D32 CP 8 Compressor are determined using a risk matrix. The critical components selected from the D32 CP8 Compressor Engine are Screw Motor, Refrigerant Air Cooler, and Cylinder Bearing Oil Cooler. This study uses the Reliability Centered Spares (RCS), Min-Max Stock, and Reorder Point (ROP) methods. The data collection and processing results obtained the need for critical components in the next 1 year based on the MTTF critical component data. These calculations show that the value of the required spare parts for the Motor Screw, Refrigerant Air Conditioner, and Cylinder Bearing Oil Cooler in a year is 8 components. The minimum Stock of the Screw Motor is 3 components, the maximum stock is 8 components, ReOrder Point point is 4 components. The minimum stock of 4 component air coolers, maximum stock of 7 components, ReOrder Point when 3 components. The minimum stock of a Cylindrical Bearing Oil Cooler is 2 components, the maximum stock is 6 components, and the ReOrder Point is when there are 2 components.","PeriodicalId":33598,"journal":{"name":"Infotekmesin Media Komunikasi Ilmiah Politeknik Cilacap","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47943933","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}
Pub Date : 2023-01-26DOI: 10.35970/infotekmesin.v14i1.1654
Yoiceta Vanda, Dwiyanto Dwiyanto
Currently, Augmented Reality (AR) technology has developed into an easy-to-use, efficient and effective technology for providing innovative educational media. Mobile Augmented Reality (MAR) is an Augmented Reality technology that utilizes mobile devices, for example, smartphones. The MAR application for multimedia learning on the motherboard is seldom used in classroom learning so the effectiveness of learning is less than optimal. The research objective was to determine the level of usability of the MAR application system using the USE questionnaire. According to Arnold M. Lund, Usability analysis has 4 aspects: usefulness, ease of use, ease of learning, and satisfaction. The method used is usability testing with 90 engineering students participating as research subjects. This study uses a questionnaire as a data collection tool and uses descriptive statistical analysis. The results of this study, that the average usability analysis score is 86.22 is included in the very feasible category, based on the system feasibility category table. The developed MAR application shows that it has provided better user interaction. This research has the benefit of knowing the use of MAR applications on students, for specific purposes, namely effectiveness, efficiency, and satisfaction. Lack of user motivation, and lack of features, will cause stress. This occurs when the system cannot meet the goals of its users.
{"title":"Usability Analysis Aplikasi Mobile Augmented Reality (MAR) untuk Multimedia Pembelajaran Motherboard (Aplikasi AR-Mobo)","authors":"Yoiceta Vanda, Dwiyanto Dwiyanto","doi":"10.35970/infotekmesin.v14i1.1654","DOIUrl":"https://doi.org/10.35970/infotekmesin.v14i1.1654","url":null,"abstract":"Currently, Augmented Reality (AR) technology has developed into an easy-to-use, efficient and effective technology for providing innovative educational media. Mobile Augmented Reality (MAR) is an Augmented Reality technology that utilizes mobile devices, for example, smartphones. The MAR application for multimedia learning on the motherboard is seldom used in classroom learning so the effectiveness of learning is less than optimal. The research objective was to determine the level of usability of the MAR application system using the USE questionnaire. According to Arnold M. Lund, Usability analysis has 4 aspects: usefulness, ease of use, ease of learning, and satisfaction. The method used is usability testing with 90 engineering students participating as research subjects. This study uses a questionnaire as a data collection tool and uses descriptive statistical analysis. The results of this study, that the average usability analysis score is 86.22 is included in the very feasible category, based on the system feasibility category table. The developed MAR application shows that it has provided better user interaction. This research has the benefit of knowing the use of MAR applications on students, for specific purposes, namely effectiveness, efficiency, and satisfaction. Lack of user motivation, and lack of features, will cause stress. This occurs when the system cannot meet the goals of its users.","PeriodicalId":33598,"journal":{"name":"Infotekmesin Media Komunikasi Ilmiah Politeknik Cilacap","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47250015","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}
Pub Date : 2023-01-26DOI: 10.35970/infotekmesin.v14i1.1641
Rosita Dwityaningsih, Theresia Sri Rahayu, Murni Handayani, Mohammad Nurhilal
Rice husk is an organic material that has a high lignocellulosic content so it has the potential to be turned into activated carbon. One method of making activated carbon is activation with a phosphoric acid activator (H3PO4). The purpose of this research was to study the effect of varying concentrations of H3PO4 as an activator on the characteristics of rice husk-activated carbon. The characterization refers to SNI 06-3730-1995 regarding the technical quality requirements of activated charcoal. Activation of rice husk carbon was carried out by contacting the carbon with H3PO4 for 24 hours and shaking it. The H3PO4 consisted of 3 concentration variations, namely 4M, 6M, and 8M. From the research results, the water content was 3.936%; 4.037%; 4.070%, the absorption of iodine has met the character of activated charcoal according to SNI, namely 1217.204 mg/g; 1204.255 mg/g; 1184.832 mg/g while the ash content value does not meet the SNI standard, which is still above 10%. The highest adsorption capacity and adsorption efficiency could be activated with 8M H3PO4, namely 22.42 mg/g and 89.68%. IR spectra on activated carbon with three variations of H3PO4 concentration showed the presence of aromatic C-H, C=C, and C-O anhydride functional groups.
{"title":"Pengaruh Variasi Konsentrasi H3PO4 Sebagai Zat Aktivator Terhadap Karakteristik Karbon Aktif dari Sekam Padi","authors":"Rosita Dwityaningsih, Theresia Sri Rahayu, Murni Handayani, Mohammad Nurhilal","doi":"10.35970/infotekmesin.v14i1.1641","DOIUrl":"https://doi.org/10.35970/infotekmesin.v14i1.1641","url":null,"abstract":"Rice husk is an organic material that has a high lignocellulosic content so it has the potential to be turned into activated carbon. One method of making activated carbon is activation with a phosphoric acid activator (H3PO4). The purpose of this research was to study the effect of varying concentrations of H3PO4 as an activator on the characteristics of rice husk-activated carbon. The characterization refers to SNI 06-3730-1995 regarding the technical quality requirements of activated charcoal. Activation of rice husk carbon was carried out by contacting the carbon with H3PO4 for 24 hours and shaking it. The H3PO4 consisted of 3 concentration variations, namely 4M, 6M, and 8M. From the research results, the water content was 3.936%; 4.037%; 4.070%, the absorption of iodine has met the character of activated charcoal according to SNI, namely 1217.204 mg/g; 1204.255 mg/g; 1184.832 mg/g while the ash content value does not meet the SNI standard, which is still above 10%. The highest adsorption capacity and adsorption efficiency could be activated with 8M H3PO4, namely 22.42 mg/g and 89.68%. IR spectra on activated carbon with three variations of H3PO4 concentration showed the presence of aromatic C-H, C=C, and C-O anhydride functional groups.","PeriodicalId":33598,"journal":{"name":"Infotekmesin Media Komunikasi Ilmiah Politeknik Cilacap","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44369650","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}
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