Jti Undip Jurnal Teknik Industri最新文献

{"title":"KELAYAKAN TEKNOLOGI IOT UNTUK KEBUN HIDROPONIK HOLTIKULTURA MENGGUNAKAN HYDROPO 4.0 DI PERKEBUNAN ALAM PASUNDAN, JAWA BARAT","authors":"Erna Mulyati, Dini Hamidin, Muhamad Nurkamal Fauzan","doi":"10.14710/jati.16.2.109-115","DOIUrl":"https://doi.org/10.14710/jati.16.2.109-115","url":null,"abstract":"Saat ini penggunaan smart teknologi pada bisnis tanaman hidroponik merupakan peluang bisnis yang sangat menguntungkan bagi para pelaku usaha. Nilai suatu teknologi dapat meningkatkan kualitas dan kuantitas tanaman hidroponik dan diharapkan adanya efisiensi biaya produksi. Perangkat teknologi cerdas dalam pengelolaan persediaan budidaya hidroponik berbasis IoT merupakan salah satu perangkat precision agriculture yang dikenal juga sebagai smart agriculture. Perangkat ini mampu mencampurkan pupuk dan air secara otomatis sehingga pelaku usaha bisnis tanaman hidroponik dapat mengurangi biaya tenaga kerja. Penelitian ini bertujuan untuk membandingkan analisis kelayakan para pelaku usaha dalam meningkatkan budidaya hidroponik dengan pola konvensional/ manual dan memanfaatkan Hydropo 4.0. Metode penelitian yang digunakan yaitu Net Present Value (NPV) dan Internal Rate of Return (IRR). Hasil penelitian ini menunjukkan bahwa model operasi dengan menggunakan Hydropo 4.0 lebih menguntungkan ketika jumlah populasi tanaman meningkat lebih dari 51,1% dari populasi tanaman pada saat pengujian. Berdasarkan perbandingan nilai IRR pada model operasi menggunakan Hydropo 4.0 akan meningkat apabila populasi tanaman ditingkatkan 698,85% dari jumlah populasi tanaman pada saat pengujian. Abstract[Feasibility of IoT Technology for Hydroponic Holticultural Gardens Using Hydropo 4.0 In Pasundan Natural Plantation, West Java] Presently, the use of smart technology in the hydroponic plant business is a profitable business opportunity for business people. The value of technology can increase the quality and quantity of plants as well as make the efficiency of production costs. Smart technological devices in the management of hydroponics plant culture based on IoT is one of the hydroponic culture supplies that are one of the precision agriculture devices, also known as smart agriculture. This device is capable of mixing fertilizer and water automatically so that hydroponic plant businesses can reduce labor costs. This study aims to compare the feasibility analysis of business actors improving hydroponic cultivation with conventional/manual patterns and utilizing Hydropo 4.0. The research method used by calculating the Net Present Value (NPV) and Internal Rate of Return (IRR) parameters. The result of this study indicate that operation model using Hydropo 4.0 will be more profitable when the number of plant populations increases by more than 51.1% of the plant population at the time of the test. Based on the comparison of the IRR value in the operation model using Hydropo 4.0, it will increase if the plant population is increased by 698.85% of the total plant population at the time of the test.Keywords: feasibility analysis; IoT; IRR; NPV","PeriodicalId":31315,"journal":{"name":"Jti Undip Jurnal Teknik Industri","volume":"112 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84873628","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":"PERANCANGAN PROSES IMPLEMENTASI MACHINE LEARNING DALAM MAINTENANCE MANAGEMENT UNTUK MENCEGAH DERATING","authors":"Bonifasius Yoga Adi Pratama, H. Yuniarto","doi":"10.14710/jati.16.2.134-142","DOIUrl":"https://doi.org/10.14710/jati.16.2.134-142","url":null,"abstract":"Derating menjadi masalah yang sering kali muncul pada generator diesel di pembangkit listrik. Derating dapat menyebabkan penurunan kinerja dan produksi listrik pada generator. Kapasitas produksi listrik yang menurun nantinya akan menjadi masalah jika melihat kondisi konsumsi listrik nasional yang terus meningkat dari tahun ke tahun. Derating sering kali terjadi karena suhu yang tinggi pada charge air. Pencegahan derating dapat dilakukan dengan mengimplementasikan strategi maintenance yang mampu memprediksi derating dan mengakomodasi perubahan suhu charge air sebagai penyebab terjadinya derating. Penelitian ini akan memperlihatkan rancangan implementasi strategi maintenance berbasis data untuk memprediksi terjadinya derating dengan menggunakan pendekatan machine learning. Rancangan proses ini akan memberikan gambaran proses seperti apa yang dapat digunakan untuk mencegah derating sehingga membantu menjaga performa generator. Tahapan implementasi machine learning dilakukan dengan mengimpelementasikan proses knowledge discovery from data pada proses yang ada dalam maintenance management. Evaluasi terkait proses maintenance management dan machine learning menunjukkan bahwa machine learning dapat diimplementasikan pada tahap controlling. Klasifikasi kondisi generator juga didasarkan pada trend kondisi suhu charge air sehingga prediksi kondisi generator terkait derating tidak dipengaruhi oleh perubahan suhu yang bersifat cepat dan sementara. Penjabaran proses yang ada menunjukkan bahwa implementasi machine learning dalam maintenance management ini mungkin untuk dilakukan. Abstract[Designing The Implementation Process of Machine Learning in Maintenance Management to Avoid Derating] Derating is problem that often arises in power plant. Derating force generator to work below its optimum performance and resulting low production rate of electricity. Declining of electricity production capacity can be problem when we see condition of national electricity consumption in Indonesia which continues to increase year over year. Derating often occurs due to high temperatures in charge air. Derating prevention can be done by implementing maintenance strategy that is able to predict derating and accommodate changes in charge air temperature. This study designs processes of implementing data-based maintenance strategy to predict occurrence of derating using machine learning approach. Process design will provide overview of what kind of process can be used to avoid derating so that it helps maintain generator performance. Machine learning implementation can be done by implementing process of knowledge discovery from data in existing maintenance management process. Evaluations related to maintenance management and machine learning processes show that machine learning can be implemented at controlling stage. Classification of generator conditions is based on trend of charge air temperature so that prediction of generator conditions will not be affected by temporary chang","PeriodicalId":31315,"journal":{"name":"Jti Undip Jurnal Teknik Industri","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87376379","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":"ANALISIS JUMLAH KENDARAAN ANGKUTAN KOTA DENGAN METODE HEADWAY DLLAJ DAN BOK BEP DI MASA PANDEMI COVID-19","authors":"Muchammad Fauzi","doi":"10.14710/jati.16.2.85-92","DOIUrl":"https://doi.org/10.14710/jati.16.2.85-92","url":null,"abstract":"Kinerja transportasi online menjadi salah satu faktor penumpang memilih menggunakan transportasi online dibandingkan angkutan kota. Fenomena tersebut diduga dapat menyebabkan pengemudi angkot (angkutan kota) menggunakan waktu lebih lama untuk menunggu penumpang atau yang disebut “ngetem” dan dapat mempengaruhi meningkatnya kemacetan di Kota Bandung ditambah dengan terjadinya Pandemi Covid-19 menuntut kegiatan transportasi dibatasi paling banyak 50% dari kapasitas angkutan. Permasalahan dari fenomena tersebut diduga karena jumlah angkot lebih besar dibandingkan penumpang angkot sehingga diperlukan pengendalian jumlah angkot yang beroperasi di Kota Bandung. Pada penelitian ini bertujuan untuk mengkaji jumlah optimal angkutan kota di Kota Bandung trayek Abdul Muis - Dago, Abdul Muis - Cicaheum, dan Sederhana - Cipagalo di Masa Pandemi Covid-19. Metode penelitian yang digunakan adalah pendekatan kuantitatif data primer menggunakan konsep pada pedoman teknis penyelenggaraan angkutan penumpang umum di wilayah perkotaan dalam trayek tetap dan teratur yang dikeluarkan oleh Departemen Perhubungan RI Direktorat Jenderal Perhubungan Darat (DLLAJ) dan Biaya Operasional Kendaraan Break Event Point (BOK BEP). Hasil dari penelitian ini adalah jumlah kendaraan angkutan kota trayek Abdul Muis - Dago dengan menggunakan metode DLLAJ turun hingga 91% dan dengan menggunakan metode BOK BEP turun hingga 48%, Jumlah kendaraan angkutan kota trayek Abdul Muis - Cicaheum dengan menggunakan metode DLLAJ turun hingga 80% dan dengan menggunakan metode BOK BEP turun hingga 43%, Jumlah kendaraan angkutan kota trayek Sederhana - Cipagalo dengan menggunakan metode DLLAJ turun hingga 94% dan dengan menggunakan metode BOK BEP turun hingga 41%. Abstract[Analysis of Number of City Transport Vehicles in Bandung Citywith The Headway Method of DLLAJ and BOK BEP in The Pandemic Time of Covid-19] The performance of online transportation is one of the factors for passengers choosing to use online transportation compared to city transportation. This phenomenon is thought to cause angkot (angkutan kota) drivers to take longer to wait for passengers or what is called “ngetem” and can affect the increase in congestion in Bandung coupled with the Covid-19 pandemic, basic transportation activities are at most 50% of the transport capacity. The problem with this phenomenon is thought to be due to the larger number of angkot than angkot passengers, so it is necessary to control the number of public transportation operating in the city of Bandung. This study aims to examine the optimal number of urban transportation in the city of Bandung during The Covid19 Pandemic. The research method used is a quantitative approach to primary data using the concept of technical guidelines for the implementation of public passenger transportation in urban areas on fixed and regular routes issued by the Indonesian Ministry of Transportation, Directorate General of Land Transportation (DLLAJ) and Vehicle Operating ","PeriodicalId":31315,"journal":{"name":"Jti Undip Jurnal Teknik Industri","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84855261","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":"RANCANGAN ARSITEKTUR SISTEM INFORMASI LOGISTIK BERBASIS CYBER-PHYSICAL SYSTEMS DENGAN TEKNOLOGI BIG DATA DAN INTERNET OF THINGS","authors":"M. R. Ma'arif, A. Saputra","doi":"10.14710/jati.16.2.143-152","DOIUrl":"https://doi.org/10.14710/jati.16.2.143-152","url":null,"abstract":"Era Industri 4.0 sangat dipengaruhi oleh perkembangan teknologi informasi khususnya teknologi big data dan internet of things. Dua teknologi tersebut membangun sebuah paradigma baru yang disebut dengan Cyber-Physical System (CPS). CPS didefinsikan sebagai interkoneksi antara lingkungan fisik dengan program komputer melalui teknologi sensor/ IoT. Penerapan CPS di berbagai bidang bisnis/ industri akan semakin memperkuat nilai bisnis yang ditawarkan kepada customer. Salah satu bidang industri yang akan mengalami peningkatan signifikan dengan penerapan CPS adalah bidang logistik. Pengembangan Sistem Informasi Logistik dengan pengimplementasian konsep CPS akan memberikan nilai tambah bagi sektor logistik secara keseluruhan. Untuk mewujudkan hal tersebut, diperlukan sebuah studi konspetual bagaimana teknologi big data dan internet of things dapat diimplementasikan dalam sistem logistik. Sehingga, dalam penelitian ini, akan dikembangkan suatu rancangan arsitektur Sistem Informasi Logistik berbasis teknologi big data dan IoT untuk mendukung penerapan CPS dalam bidang logistik. AbstractThe era of Industry 4.0 is strongly influenced by information technology developments, especially big data technology and the internet of things. The two technologies build a new paradigm called Cyber-Physical System (CPS). CPS is defined as the interconnection between the physical environment and computer programs through sensor / IoT technology. The application of CPS in various business / industry fields will further strengthen the business value offered to customers. One of the industrial fields that will experience a significant increase with CPS's application is the field of logistics. The development of the Logistics Information System by implementing the CPS concept will provide added value to the Logistics sector as a whole. To make this happen, we need a conceptual study of how big data technology and the internet of things can be implemented in the logistics system. Therefore, in this study, a Logistics Information System architecture design will be developed based on big data and IoT technology to support CPS's application in logistics.Keywords: Logistic Information Systems; Cyber-Physical System; big data; internet of things","PeriodicalId":31315,"journal":{"name":"Jti Undip Jurnal Teknik Industri","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88017736","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":"PENILAIAN RISIKO TERHADAP POSTUR KERJA PADA PEKERJA PABRIK KARET INDONESIA","authors":"Taufiq Ihsan, Shinta Silvia, Vioni Derosya, Tivany Edwin, Mita Sari Dewi","doi":"10.14710/jati.16.2.116-122","DOIUrl":"https://doi.org/10.14710/jati.16.2.116-122","url":null,"abstract":"Keluhan nyeri muskuloskeletal sering terjadi di tiga pabrik karet remah terbesar yang berlokasi di Padang, Indonesia. Penelitian ini bertujuan untuk menganalisis postur kerja menggunakan metode Rapid Entire Body Assessment (REBA) untuk pekerja di area produksi. Pengambilan data postur karyawan menggunakan bantuan kamera video serta lembar observasi. Responden dalam penelitian ini terdiri dari 135 pekerja area produksi basah dan 213 pekerja area produksi kering. Penilaian REBA menunjukkan bahwa 72,34% dari pekerjaan yang diperiksa termasuk dalam kategori risiko menengah. Skor REBA tertinggi di area produksi basah adalah dalam proses pengeringan alami. Sebaliknya, di area produksi kering, skor REBA tertinggi adalah dalam proses mengangkat kontainer dari truk. Berdasarkan Standar Indonesia No.7269 / 2009 tentang perhitungan beban kerja, ini menunjukkan bahwa pekerjaan di pabrik-pabrik tersebut berada dalam kategori beban kerja sedang dengan pengeluaran energi 200-350 kkal/ jam (46,81%). Hasil uji statistik dari hubungan antara usia, masa kerja, beban kerja, dan area kerja pada pekerjaan postural menunjukkan bahwa beban kerja adalah yang paling terkait dengan postur pekerja. Tindakan untuk memperbaiki postur kerja berdasarkan analisis REBA adalah dengan menyesuaikan posisi alat atau mesin dengan ketinggian tubuh pekerja, memperhatikan waktu kerja, dan waktu istirahat. Yang paling mendesak adalah menggunakan alat saat mengangkat wadah.  Abstract[Risk Assessment of Work Posture In Indonesian Crumb Rubber Factories Workers] Musculoskeletal pain complaints often occur in the three largest crumb rubber factories located in Padang, Indonesia. This study aimed to analyze the work posture using the Rapid Entire Body Assessment (REBA) method for workers in the production area. Retrieval of employee posture data utilizing the help of video cameras and observation sheets. Respondents consisted of 135 wet area workers and 213 dry area workers. The REBA assessment showed that 72.34% of the work examined was included in the medium-risk category. The highest REBA score in the wet area was in the natural drying process. In dry areas, the highest REBA score is in the process of lifting containers from trucks. Based on Indonesian Standard No.7269 / 2009, this shows that work in these factories was in the category of moderate workloads with an energy expenditure of 200-350 kcal/hour (46.81%). Statistical test results from the relationship between age, work-period, workload, and work area on postural work indicated that workload was most related to worker posture. Action to improve postural work was to adjust the position of the tool or machine with the height of the worker's body, pay attention to work time, and rest periods.Keywords: Musculoskeletal, Exposure assessment, work posture, REBA, crumb rubber factories","PeriodicalId":31315,"journal":{"name":"Jti Undip Jurnal Teknik Industri","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87100798","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 PENERAPAN LEAN SIX SIGMA UNTUK MENINGKATKAN KUALITAS PRODUK SEMEN","authors":"Teti Alawiyah, Vera Devani, N. Amalia","doi":"10.14710/JATI.16.1.73-84","DOIUrl":"https://doi.org/10.14710/JATI.16.1.73-84","url":null,"abstract":"Penelitian ini dilakukan di sebuah perusahaan yang bergerak di bidang packing plant. Proses pada packing plant tersebut tentunya tidak terlepas dari permasalahan pemborosan yang menjadi kendala saat pengepakan semen berlangsung. Tujuan dari penelitian ini adalah untuk mengidentifikasi jenis-jenis pemborosan, mengidentifikasi akar penyebab pemborosan, mengeliminasi pemborosan dan memberikan usulan tindakan perbaikan dengan menerapkan Lean Six Sigma. Lean Six Sigma merupakan sebuah metode yang digunakan untuk mengeliminasi pemborosan yang terdapat pada lantai produksi serta mengidentifikasi penyebab kecacatan produk dengan pendekatan DMAIC (Define, Measure, Analysis, Control). Hasil penelitian menunjukkan jenis pemborosan yang paling berpengaruh adalah defect product, waktu pengepakan yang melebihi batas toleransi (OTIFIC), antrian, unnecessary motion, over processing, transportasi dan penumpukkan. Akar penyebab terjadinya pemborosan adalah karena kurangnya keterampilan, kurang teliti dan kelelahan, kondisi peralatan mulai aus serta kurangnya pemeliharaan pada peralatan yang digunakan, SOP kerja yang kurang tepat dan mendetail, alur transportasi yang bolak-balik karena tata letak yang tidak tepat. Aktivitas yang merupakan pemborosan dan harus dieliminasi adalah saat operator packer kedua menghitung ulang jumlah bag. Dari hasil penelitian didapatkan beberapa usulan perbaikan yakni dengan memperbaiki SOP kerja yang ada, menerapkan program 6S, membuat SOP 6S, melakukan pelatihan kerja, membuat standar kriteria khusus dalam proses perekrutan karyawan, membuat label atau tanda pada tiap tumpukkan bag, melakukan pemeliharaan secara rutin dan berkala, melakukan pengawasan terhadap kinerja karyawan serta membuat peraturan baru untuk mendisiplinkan karyawan. Abstract This research was conducted in a company engaged in the packing plant. The process of packing plant is certainly not separated from the problem of waste that become an obstacle when packing cement in progress. The purpose of the study was to identify the types of waste, identify the root cause of waste, eliminate waste and provide proposed corrective action by implementing Lean Six Sigma. Lean Six Sigma is a method used to eliminate waste on the production floor and identify the cause of product defects with the approach of DMAIC (Define, Measure, Analysis, Control). The results showed the most influential types of waste are defect product, packing time exceeding the tolerance limit (OTIFIC), queuing, unnecessary motion over processing, transportation and stacking. The root cause of waste is due to lack of skills, less through and fatigue, equipment condition began to wear and lack of maintenance on the equipment used, work SOP that is less precise and detailed, the flow of transportation commute due to improper layout. Activity that is a waste and should be eliminated is when the second packer operator recalculates the number of bags. From the research results obtained several proposed improve","PeriodicalId":31315,"journal":{"name":"Jti Undip Jurnal Teknik Industri","volume":"16 1","pages":"73-84"},"PeriodicalIF":0.0,"publicationDate":"2021-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46658550","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":"DESAIN POLA ISTIRAHAT PEKERJA SESING DENGAN PENDEKATAN FISIOLOGIS UNTUK MENINGKATKAN PRODUKTIVITAS","authors":"Zainal Fanani Rosyada, Heru Prastawa, M. F. Hidayah, Enny Purwati Nurlaili","doi":"10.14710/JATI.16.1.10-20","DOIUrl":"https://doi.org/10.14710/JATI.16.1.10-20","url":null,"abstract":"Penelitian ini dilakukan di PT X yang memproduksi olahan kayu. Kelelahan dan kejenuhan pekerja terjadi pada bagian sesing. Karyawan bekerja selama 8 jam per shift. Tingkat kelelahan pekerja diperkirakan menjadi salah satu penyebab kelelahan dan kejenuhan. Penelitian ini bertujuan mengetahui tingkat beban kerja fisik dan konsumsi energi yang membutuhkan adanya waktu istirahat pendek tambahan. Waktu istirahat pendek ini untuk meringankan beban kerja dan menggantikan energi yang keluar selama bekerja, sehingga pekerja bisa bekerja secara optimal. Beban kerja fisik berdasarkan cardiovasculairload (%CVL) yang diukur melalui denyut nadi menggunakan smart band. Konsumsi energi dikonversikan kepada kebutuhan waktu istirahat menggunakan persamaan Murrel. Pengukuran dilakukan pada dua perlakuan, bekerja sebelum rekomendasi (kondisi awal) dan bekerja sesuai rekomendasi (kondisi intervensi). Rekomendasi pola istirahat kerja berupa penerapan istirahat pendek dan pemberian asupan energi yang diberikan pada pukul 09.30 selama 15 menit dan pada pukul 14.00 selama 10 menit. Hasil penelitian menunjukkan rata-rata denyut nadi kerja pada saat kondisi awal 107,35 denyut/ menit; saat kondisi intervensi 104,13 denyut/ menit. Terjadi penurunan sebesar 3%. Rata-rata %CVL pada kondisi awal 29,97%, sedangkan kondisi intervensi 26,99%. Terjadi penurunan sebesar 9.94%. Rata-rata konsumsi energi pada kondisi awal 3.19 kkal/ menit, sedangkan kondisi intervensi 2.87 kkal/ menit. Terjadi penurunan sebesar 10.03%. Dapat disimpulkan bahwa penerapan rekomendasi dapat meningkatkan produktifitas kerja dan menurunkan beban kerja. Abstract [ Design of Rest Break o f Sesing Workers Using Physiological Approaches to Improve Productivity] This research was conducted at PT X which produced processed wood. Fatigue and workers' saturation occur in the sesang section. Employees work for 8 hours per shift. Workers' fatigue rates are estimated to be one of the causes of fatigue and saturation. This study aims to determine the level of physical workload and energy consumption that need additional short rest periods. The physical workload level and energy consumption are studied to determine the length of additional short breaks. This short break time is to ease the workload and replace the energy that comes out during work, so workers can work optimally. Physical workload based on cardiovasculaIirlload (% CVL) which is measured by pulse using a smart band. Energy consumption is converted to the need for rest time using the Murrel equation. Measurements are carried out on two treatments, work before recommendations (initial conditions) and work according to the recommendation (intervention conditions). Recommended work break patterns in the form of the application of short breaks and the provision of energy intake given at 09.30 for 15 minutes and at 2:00 p.m. for 10 minutes. The results showed the average pulse of work when kondisi awal 107.35 beats/ minute; When kondisi intervensi 104.13 beat/ ","PeriodicalId":31315,"journal":{"name":"Jti Undip Jurnal Teknik Industri","volume":"16 1","pages":"10-20"},"PeriodicalIF":0.0,"publicationDate":"2021-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45534221","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":"ISLAMIC MODERN RETAIL ATTRIBUTES FOR MUSLIM CONSUMERS PATRONAGE INTENTION","authors":"W. S. Jatiningrum, F. H. Astuti, H. Mastrisiswadi","doi":"10.14710/JATI.16.1.21-28","DOIUrl":"https://doi.org/10.14710/JATI.16.1.21-28","url":null,"abstract":"Muslim dominates the total population in Indonesia. Islamic modern retail growth in Indonesia is predicted to increase since Muslims started to consider the religion aspects for their daily life. Nevertheless, there has not been much research on this matter. This study aims to investigate Islamic modern retail attributes for Muslim shoppers in Indonesia. Furthermore, this research will focus on the patronage intention of Muslim shoppers. A sample of 144 consumers of modern Islamic retail in Indonesia was collected. The data were collected through a questionnaire and analyzed using multiple linear regression. The results revealed that Islamic modern retail attributes, such as the Islamic store atmosphere and Islamic value, had a significant positive effect on Muslim shopper’s patronage intention. While other attributes, such as Muslim product, humanistic, and halal product certification, have no significant effect on Muslim shopper’s patronage intention. This study confirmed that each one-unit increase in independent variables, namely Muslim product, Islamic store atmosphere, humanistic, halal product certification, and Islamic value, respectively, will cause an increase in patronage intentions of 0.114, 0.238, 0.025, 0.044, and 0.263 unit.","PeriodicalId":31315,"journal":{"name":"Jti Undip Jurnal Teknik Industri","volume":"16 1","pages":"21-28"},"PeriodicalIF":0.0,"publicationDate":"2021-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48125462","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":"PENGENDALIAN PERSEDIAAN PROBABILISTIK PRODUK SUBSTITUSI DENGAN PERMINTAAN SEBAGAI FUNGSI HARGA","authors":"Laila Nafisah, S. Sutrisno","doi":"10.14710/JATI.16.1.63-72","DOIUrl":"https://doi.org/10.14710/JATI.16.1.63-72","url":null,"abstract":"Kamara Living merupakan suatu unit usaha yang bergerak dalam penjualan kebutuhan sehari-hari. Salah satu produk yang populer adalah sarung bantal. Sarung bantal yang ditawarkan memiliki beberapa desain motif dan jenis yang berbeda. Permintaan akan produk sarung bantal tidak menentu antara satu desain dengan desain yang lain. Ketika desain tertentu persediaannya habis, perusahaan akan menawarkan desain lain dari jenis kain yang sama. Jika konsumen tidak bersedia maka terjadi kehilangan penjualan. Ketika persediaan berlebih, perusahaan akan memberikan harga promosi untuk mendongkrak tingkat penjualannya. Jika ini dibiarkan terus-menerus, tentu saja perusahaan akan mengalami penurunan keuntungan. Pada makalah ini dikembangkan model persediaan dengan mempertimbangkan produk substitusi dengan permintaan sebagai fungsi harga yang bertujuan untuk meminimasi total biaya persediaan. Penyelesaian model yang dilakukan mampu menghasilkan solusi kuantitas pemesanan dan titik pemesanan yang optimal. Validasi model dilakukan dengan membandingkan hasil dari model yang dikembangkan terhadap kondisi riil. Selain itu juga dilakukan analisis sensitivitas terhadap parameter-parameter yang berpengaruh. Abstract [Product-s ubstitution Inventory Model with Demand depend on Price ] Kamara Living is a business unit engaged in selling daily stuff. One popular product is pillowcases. The pillow cover offered has several different motif designs and types. The demand for pillowcases is uncertain between one design and another. When a stockout occurs for a particular design, the company will offer another design of the same type of fabric. If consumers are not willing, there will be lost sales. When there is overstock, the company will provide promotional prices to increase sales levels. If this is allowed to continue, of course the company will experience a decline in profits. In this paper, an inventory model is developed by considering substitute products with demand as a price function that aims to minimize the total cost of inventory. Completion of the model carried out is able to produce optimal order quantity and order point solutions. Model validation is done by comparing the results of the models developed against real conditions. In addition, a sensitivity analysis was carried out on the influential parameters. Keywords : Inventory Models; Product Substitution; Demand Depend on Price","PeriodicalId":31315,"journal":{"name":"Jti Undip Jurnal Teknik Industri","volume":"16 1","pages":"56-62"},"PeriodicalIF":0.0,"publicationDate":"2021-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49158371","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":"PENENTUAN STRATEGI RANTAI PASOK UMKM YANG KOMPETITIF BERDASARKAN LOGISTICAL-CROSSFUNCTIONAL DRIVERS: STUDI KASUS UMKM DI KABUPATEN JOMBANG – JAWA TIMUR","authors":"S. Sumarsono, Nur Muflihah","doi":"10.14710/JATI.16.1.42-55","DOIUrl":"https://doi.org/10.14710/JATI.16.1.42-55","url":null,"abstract":"Pengembangan UMKM diperlukan, dengan cara penentuan strategi rantai pasok kompetitif. Penelitian ini bertujuan menentukan strategi rantai pasok UMKM yang kompetitif, dengan menganalisis kebaikan hasil prediksi, kemudian mengidentifikasi strategi kompetitif dari aspek fasilitas, inventori, transportasi (logistical drivers) dan dari aspek informasi, sourcing, pricing (crossfunctional drivers). Selanjutnya menganalis pengaruh tiap aspek tersebut terhadap strategi rantai pasok UMKM kompetitif. Desain penelitian menggunakan desain kuantitatif analitik, dengan data penelitian hasil survei dengan teknik purpose sampling, dan obyek studi kasus UMKM di Kabupaten Jombang Jawa Timur. Metode analisa data menggunakan Structural Equation Modelling-Partial Least Square (SEM-PLS). Hasil penelitian, bahwa kebaikan hasil prediksi berdasarkan evaluasi nilai R 2 dan Q 2 merupakan prediksi yang baik dan relevan untuk memprediksi. Selanjutnya hasil identifikasi strategi rantai pasok kompetitif dari aspek fasilitas, inventori, transportasi (logistical drivers) diketahui sekitar 30% sampai 40% UMKM yang memiliki arah strategi kompetitif. Kemudian dari aspek informasi, sourcing, pricing (crossfunctional drivers) diketahui sekitar 27%-33% UMKM dengan arah strategi kompetitif. Hasil analisis pengaruh aspek logistical-crossfunctional terhadap strategi rantai pasok UMKM yang kompetitif, disimpulkan semua aspek signifikan berpengaruh. Besarnya koefisien pengaruh terurut dari faktor fasilitas, sourcing, informasi, transportasi, inventori, dan pricing. Implementasi penelitian, dengan mengetahui jumlah UMKM belum kompetitif untuk selanjutnya agar dikembangkan, melalui penerapan prioritas urutan logistical-crossfunctional drivers. Abstract [Determining Competitive MSMEs Supply Chain Strategies Based on Logistical-Crossfunctional Drivers: A Case Study of MSMEs in Jombang Regency-East Java] The development of MSMEs are needed, by establishing a competitive supply chain strategy. This study aims to determine a competitive MSMEs supply chain strategy, by analyzing the goodness of the prediction, then identifying competitive strategies from the aspects of facilities, inventory, transportation (logistical drivers) and from the aspects of information, sourcing, pricing (cross-functional drivers). Furthermore, analyzing the influence of each of these aspects on the supply chain strategy of competitive MSMEs. The research design used a quantitative analytic design, with research data from the survey results using purposive sampling technique, and the object of the MSMEs case study in Jombang Regency, East Java. Methods of data analysis using Partial Least Square- Structural Equation Modeling (PLS-SEM). The results of the study, that the goodness of the prediction results based on evaluating the values of R 2 and Q 2 is a good prediction and relevant to predict. Furthermore, the results of the identification of competitive supply chain strategies from the aspects of facilities, inventory, ","PeriodicalId":31315,"journal":{"name":"Jti Undip Jurnal Teknik Industri","volume":"16 1","pages":"42-55"},"PeriodicalIF":0.0,"publicationDate":"2021-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42090691","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}