Jurnal Teknologi-Sciences & Engineering最新文献

{"title":"Beban Kerja Operator Menggunakan Metode CVL dan NASA-TLX PT. Batanghari Barisan","authors":"Windi Junialdo","doi":"10.35134/jitekin.v13i1.93","DOIUrl":"https://doi.org/10.35134/jitekin.v13i1.93","url":null,"abstract":"Batang Haribarisan is a company engaged in the processing of raw rubber into semi-finished goods (work in process). The type of product produced is crumb rubber. PT. Batanghari Barisan still has a lot of work that is done manually which can cause workload both physically and mentally, therefore it is necessary to measure the physical and mental workload for workers to find out whether the work carried out is included in the workload category that is safe to do in long period of time. The methods that can be used are the Cardio Vascular Load (CVL) and National Aeronautics and Space Administration Task Load Index (NASA-TLX) methods. It is known that the measurement of physical workload using the CVL method, there is workload in the category that needs to be repaired, namely breaker and hammermill operators, with a percentage of 32.05% and 32.65%. Both types of work require high physical labor because most of the work is done standing, monotonous and repetitive. and secondly, the operator's age is considered old, namely 56 years and 47 years, so that it affects the perceived workload. Based on the results of mental workload calculations using the NASA-TLX method that has been carried out. Whereas the mental workload with indicators is Mental Needs (MD) of 170, Physical Needs (PD) of 540, Time Requirements (TD) of 280, Work Performance (OP) of 390, Level of Effort (EF) of 510, and Frustration Level (FR) of 180.\u0000 ","PeriodicalId":47541,"journal":{"name":"Jurnal Teknologi-Sciences & Engineering","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49284304","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}

{"title":"Evaluasi Risiko Postur Kerja Pegawai Administrasi Menggunakan Metode SNQ dan ROSA di CV. Rempah Sari","authors":"M. I. Adelino, Susriyati, M. Irwan","doi":"10.35134/jitekin.v13i1.90","DOIUrl":"https://doi.org/10.35134/jitekin.v13i1.90","url":null,"abstract":"Musculoskeletal Disorders (MSDs) is damage to the musculoskeletal system that accumulates and causes abnormalities due to repeated trauma, causing complaints of pain in the muscles. Ergonomics has an important role in preventing MSDs. Employee work activities at CV. Rempah Sari is an industrial company engaged in cinnamon bark. Workers feel complaints on the upper neck, lower neck, left shoulder, right shoulder, back, right arm, left arm, waist, hips and on the knee. The purpose of this study was to evaluate and analyze the risk level of the administrative department's work posture using the Standard Nordic Questionnaire (SNQ) and Rapid Office Strain Assessment (ROSA) methods. The results of this study using the SNQ method show that employees complain about the neck, shoulders, arms, back, waist, hips, buttocks, and need immediate repairs. The results of the ROSA calculation show that employees A, employees B, and employees C employees have a high or dangerous risk, and urgent repairs are needed. The cause of the high risk experienced is caused by the inadequate use of facilities, the need to update work facilities according to ergonomic standards in the world of work, and the holding of good and correct computer office ergonomics training to reduce injuries when using computers.","PeriodicalId":47541,"journal":{"name":"Jurnal Teknologi-Sciences & Engineering","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48870130","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}

{"title":"Surface Modification on Magnesium Alloys’ Hardness and Microstructure Using Friction Stir Processing – A Review","authors":"Z. Zulkfli, Z. Hamedon, N. Fatchurrohman","doi":"10.35134/jitekin.v13i1.91","DOIUrl":"https://doi.org/10.35134/jitekin.v13i1.91","url":null,"abstract":"Low density of magnesium-based alloy is one potential as the lightest structural material for light weight-high strength applications for automotive and aerospace. Severe plastic deformation (SPD) together with thermomechanical processing are proved to be a successful method for attaining desired microstructural modifications through achieving fine and highly misoriented microstructures and creating various structures to the bulk properties of magnesium alloy. The material's deformation can result in an altered microstructure that is gainful to the material's requirements. However, the poor deformability of magnesium and its alloys limits the application of the thermomechanical approach. Controlling over temperature and deformation rate is hard to achieve. Among the thermomechanical processes, friction stir processing (FSP) offers an easy way to achieve process stability and mechanical properties enhancement by heat treatment which results in the closure of porosity and refined grain size. During this process, heat is generated by the rotation of the FSP processing tool. Few process parameters such as rotational and traverse speeds should be controlled to make FSP stay within the defined processing condition. It is critical to set the right tool rotational speed as well as traverse speed to ensure adequate heat generation. As there are no established standards for operating the FSP, the only solution is to experiment with different settings to find the best parameter which will produce better quality on processed magnesium alloy workpiece. This paper explores earlier studies on surface modification via FSP technique to improve the mechanical properties strengthening of magnesium alloy mainly on grain size and hardness. The surface modification was done mostly on popular series of magnesium alloy (AZ series) using different tool material, tool geometry and different parameters combination. A comprehensive view of surface modification on magnesium alloys which includes the FSP tool and workpiece material used, variations of FSP parameters settings as well as the effect on hardness and microstructure analysis will be discussed.","PeriodicalId":47541,"journal":{"name":"Jurnal Teknologi-Sciences & Engineering","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47264021","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}

{"title":"Penerapan Metode Silver Meal Heuristic untuk Minimasi Biaya Persediaan Bahan Baku Tahu","authors":"Jurnal Teknologi, Penerapan Metode Silver, Meal Heuristic, untuk Minimasi, Biaya Persediaan, Bahan Baku, Tahu Mutiara, . Yetrina1, Rifki Muhida, Aburizal Bakri, Perencanaan Persediaan, Silver-Meal Persediaan Bahan, Industri Heuristic, Meminimumkan Rumah, Biaya","doi":"10.35134/jitekin.v13i1.89","DOIUrl":"https://doi.org/10.35134/jitekin.v13i1.89","url":null,"abstract":"UMKM Pabrik Tahu AL merupakan salah satu produsen tahu yang beralamat di Kecamatan Kuranji, Kota Padang, Sumatera Barat. Secara umum permasalahan kurangnya persediaan bahan baku menduduki peringkat utama dalam permasalahan produksi pada Pabrik Tahu AL. Akibat dari kekurangan tersebut, terjadi kehilangan keuntungan yang diperoleh dan kadang pula terjadi kelebihan persediaan bahan baku sehingga menimbulkan biaya persediaan. Penelitian ini termasuk kedalam penelitian yang bersifat kuantitatif. Penelitian kuantitatif adalah metode penelitian yang mengumpulkan dan menganalisis data numerik untuk memahami fenomena dan menjawab pertanyaan penelitian. Pendekatan ini menggunakan pendekatan ilmiah dan berfokus pada pengukuran objektif dan analisis statistik. Penelitian kuantitatif mengumpulkan data antara lain data persediaan, data kelebihan dan kekurangan bahan baku tahu. Metode yang digunakan untuk pengolahan data yaitu metode Silver-Meal Heuristic. Dari hasil pengolahan data diperoleh hasil bahwa metode ini menghasilkan total biaya persediaan bahan baku yang lebih kecil dari pada total biaya persediaan yang diterapkan oleh Home industry Pabrik Tahu AL selama ini, Berdasarkan data dari bulan Januari 2020 sampai Desember  2021, dari  kedua  metode  pengendalian  persediaan  bahan  baku  dapat  disimpulkan bahwa metode Silver-Meal Heuristic lebih efisien siap apabila dibandingkan dengan metode Riil home industry dengan tingkat efisiensi sebesar 5,42 persen.","PeriodicalId":47541,"journal":{"name":"Jurnal Teknologi-Sciences & Engineering","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46947475","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}

{"title":"Usulan Perbaikan untuk Meminimasi Reject pada Unit Produksi Keripik Sanjai Rina Kota Payakumbuh","authors":"Dina Rahmayanti, M. I. Ashshiddiqi, Hilma Raimona Zadry, Yumi Meuthia, L. Susanti","doi":"10.35134/jitekin.v13i1.88","DOIUrl":"https://doi.org/10.35134/jitekin.v13i1.88","url":null,"abstract":"Sanjai Rina is one of the small and medium industries (SMEs) that produces and sells sanjai chips. This study aims to identify aspects that cause rejected production in Sanjai Rina. This study uses the Statistical Process Control (SPC) method with the Failure Mode and Effect Analysis (FMEA) approach. The stages of the research started with problem identification, brainstorming, FMEA calculations, and recommendations for improvement. Identifying problems using the required to-quality method and IPO diagrams followed by brainstorming to identify the existing problems using fishbone diagrams in more detail. FMEA calculations design a questionnaire for RPN FMEA calculations by considering severity, occurrence, and detection weighting. The resulting rejected products are broken sanjai, burnt sanjai, and non-crispy sanjai chips. The research results found that the highest cause for each cause of rejection was the same, namely the potential due to low worker skill failure with an RPN FMEA value of 409.6. Several solutions can be proposed from this research, while the priority solutions are making work SOPs and making work instructions for the frying section.","PeriodicalId":47541,"journal":{"name":"Jurnal Teknologi-Sciences & Engineering","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48416258","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}

{"title":"Pengembangan Aplikasi Manajemen Peserta Penerima Program Keluarga Harapan Pada Dinas Sosial Kota Banjarbaru","authors":"Jurnal Teknologi, Pengembangan Aplikasi, Manajemen Peserta, Penerima Program, Keluarga Harapan, Pada Dinas, Sosial Kota Banjarbaru, Ihsanul Fikri, Dinas Sosial, Aplikasi Manajemen, Hypertext Website, My Preprocessor, Structured Query, Language","doi":"10.35134/jitekin.v13i1.94","DOIUrl":"https://doi.org/10.35134/jitekin.v13i1.94","url":null,"abstract":"The Banjarbaru City Social Service Office handles and processes data on the Family Hope Program (PKH) located in the Banjarbaru City area. need an aplication that manages data that determines which participants deserve assistance and the need for a system that can provide data that can reach PKH assistance. From the existing problems, it was analyzed and designed an management application for PKH recipients at the Banjarbaru City Social Service, which was built using the waterfall method, with stages including system requirements analysis and ongoing system analysis, design or design using the UML method, interface design, writing program code, testing, and implementation stages. This system produces an management application for PKH recipients at the Banjarbaru City Social Service. Forming neatly stored documentation and performance power in information systems. Documented data is stored neatly in a form database so that it is easy to find when needed.","PeriodicalId":47541,"journal":{"name":"Jurnal Teknologi-Sciences & Engineering","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49311470","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}

{"title":"Penggunaan TOGAF ADM Untuk Mengidentifikasi Ketidaksesuaian Pada Aplikasi Pencari Kerja","authors":"Muhammad Anwar Fauzi, Ema Utami, Tonny Hidayat","doi":"10.34151/jurtek.v16i1.4272","DOIUrl":"https://doi.org/10.34151/jurtek.v16i1.4272","url":null,"abstract":" \u0000The identification of non-conformities aims to create harmony between business and information technology for current and future organizational needs. The successful implementation of identification is inseparable from an organization planning and designing the enterprise architecture. Planning and designing this requires a complete and easy-to-use methodology. In this research, a case study was carried out for information system strategic planning by applying the TOGAF ADM method with the help of the value chain model and other modeling tools in job seeker applications. The stages of the TOGAF ADM methodology are translated into enterprise architecture modeling, namely vision architecture, business architecture, information system architecture and technology architecture. The results of modeling with the TOGAF ADM methodology provide a basis for overcoming problems and are an effort to optimize a data input design and add validation to the input design which can help reduce the risk of unwanted data such as duplicate data, inappropriate data and so on.","PeriodicalId":47541,"journal":{"name":"Jurnal Teknologi-Sciences & Engineering","volume":"13 3","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41262145","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}

{"title":"Design and Control Development of an Autonomous Visitor Guiding Robot in a Hospital Environment","authors":"Agus Siswoyo, P. Arbiyanti, Rodik Wahyu Indrawan","doi":"10.35134/jitekin.v13i1.81","DOIUrl":"https://doi.org/10.35134/jitekin.v13i1.81","url":null,"abstract":"Mobile robot technology, coupled with artificial intelligence, has reached a point where robots can now autonomously navigate and store area data, while the integration of smart sensor and controller technology enables them to detect and adapt to dynamic environments by making predictions under diverse conditions. In general, hospital visitors do not have sufficient preparation and knowledge accompanied by sudden situations, this often makes visitors, namely patients and patient companions confused and panicked. The reality is that until now, many visitors are still pacing in the wrong room, asking the officers many times, which eventually leads to misunderstandings by visitors to the hospital system, facilities, and services which are considered complicated and make visitors dissatisfied. Applied technology innovation Design and control of autonomous visitor guide robots in hospital environments (Viguro Robot) offers solutions using interactive robots that can provide location information and deliver visitors to their intended location. Artificial intelligence is employed through the utilization of sensors, digital data, or remote input, allowing the amalgamation of hospital patient data, instant material analysis, and the utilization of insights derived from Viguro Robots' sensors. This robot is designed by utilizing the development of autonomous mobile robot technology, interactive human machine interface, localization and mapping, and obstacle avoidance. The stages in making the robot begin with design planning, initial testing, stage I validation, stage II validation, and implementation testing. This applied innovation of technology is expected to offer solutions in order to improve facilities and quality of service to patients and patient companions in hospitals.","PeriodicalId":47541,"journal":{"name":"Jurnal Teknologi-Sciences & Engineering","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47685321","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}

{"title":"NUMERICAL STUDY ON EFFECT OF PHASE ANGLE ON TORSIONAL AND LATERAL VIBRATIONS IN POWER TRANSMISSION SYSTEM EMPLOYING CARDAN SHAFT","authors":"Mohd Hazri Omar, Muhajir Ab Rahim, Mohd Noor Arib Md Rejab","doi":"10.11113/jurnalteknologi.v85.19645","DOIUrl":"https://doi.org/10.11113/jurnalteknologi.v85.19645","url":null,"abstract":"A power transmission system driven by a Cardan shaft may experience severe vibration due to fluctuating rotational speed and moments transferred to the final drives, determined by the level of angular misalignment and phasing of the joint yokes. This study investigates the potential of an out-of-phase position displaced by a phase angle in attenuating vibrations. The governing equations representing the dynamics of the system are derived. The torsional and lateral vibration responses are numerically calculated over a range of input rotational speeds. When attenuating the vibration, the phase angle is set equal to the maximum twist that occurs during the in-phase position. Relative attenuation is used to investigate the phase angle effects. The effectiveness is studied for different levels of static angular misalignment. For the considered system, the results showed that for static angular misalignment greater than 20 degrees, the proposed phase angle arrangement could attenuate torsional vibration by more than 10 percent and significantly attenuate the lateral vibration.","PeriodicalId":47541,"journal":{"name":"Jurnal Teknologi-Sciences & Engineering","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47260001","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}

{"title":"BUILDING ENVELOPE RETROFIT FOR ENERGY SAVINGS IN MALAYSIAN GOVERNMENT HIGH-RISE OFFICES: A CALIBRATED ENERGY SIMULATION","authors":"Zalina Shari, Noor Laily Mohamad, N. Dahlan","doi":"10.11113/jurnalteknologi.v85.15124","DOIUrl":"https://doi.org/10.11113/jurnalteknologi.v85.15124","url":null,"abstract":"\u0000\u0000\u0000\u0000With over a third of global energy used for building construction and operation, an optimum design for building envelopes is essential to improve the energy performance of the existing buildings. This study revealed that typical government high-rise office buildings in Malaysia have an average Building Energy Intensity (BEI) of 161 kWh/m2/year before any upgrading works on the air-conditioning and mechanical ventilation (ACMV) systems were conducted. This value is higher than the recommended value in Green Building Index (GBI) for commercial office buildings (150 kWh/m2/year) and the Economic Planning Unit (EPU) standard for public buildings (140 kWh/m2/year). Therefore, this study employed a case study approach combined with calibrated computer simulation to determine the optimal building envelope retrofit strategies and identify the three levels of interventions (minor, moderate and major levels) with corresponding energy reduction. A validated model representing a typical existing government high-rise office building in Malaysia was chosen as the base case model for energy evaluation studies. The effectiveness of each level of intervention and its energy retrofit measures (ERMs) were evaluated compared to the actual electricity bills. The results showed that all levels of interventions provided between 4% to 7% savings in annual energy consumption. The proposed interventions demonstrated compliance with the BEI benchmark margins of the GBI and EPU standard, namely 116 kWh/m2/year (minor intervention level), 113 kWh/m2/year (moderate intervention level), and 110 kWh/m2/year (major intervention level). \u0000\u0000\u0000\u0000","PeriodicalId":47541,"journal":{"name":"Jurnal Teknologi-Sciences & Engineering","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45550579","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}