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1
Sanjaya, Taufiq, and Djoko Adi Waluyo. "PENERAPAN METODE MATERIAL REQUIREMENT PLANNING (MRP)DALAM PERENCANAAN KEBUTUHAN BAHAN BAKU KEMASAN PLASTIK HD MAYOR." WAKTU: Jurnal Teknik UNIPA 11, no. 2 (July 15, 2013): 28–31. http://dx.doi.org/10.36456/waktu.v11i2.856.
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The raw material is a major component in an industry, where raw materials become afundamental requirement in the production process. That requires a careful inventory planningsystem in the processing of raw materials production. If adequate supplies of raw materials, theproduction continues to run smoothly. Material Requirement Planning (MRP) is a method forcontrolling the raw material inventory planning. Where this method is designed specifically forthe production of corrugated demand situation. With this method, the researchers conducted astudy of HD plastic packaging raw material inventories at a food company, in which the process ofcollecting data with historical data recording system usage reports monthly HD plastic.The purpose of this study was to determine inventory levels and determine strategies forcontrolling and planning of HD plastic packaging materials. By making MPS for 3 months, thenthe obtained forecasting production from December 2012 s/d in February 2013. The doughproduction amount of demand Adonan 32.543batch and demand of Cream 95.938batch.With the number of such requests, the need for plastic packaging materials as much HD plasticshort 24zak as same 7221.45Kg, equivalent to as much as 604.79Kg weekly demand. For HDplastic long needs 19zak as same 5610.86kg, equivalent to 467.57Kg weekly demand. By usingthe MRP method can determine the company's raw material procurement strategy for the next 3months. Thus the MRP method can be applied in the raw material requirement planning.
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Camerawati, Febriani Lenshi, and Handoyo Handoyo. "PERANCANGAN ULANG TATA LETAK FASILITAS GUDANG BAHAN BAKU DENGAN METODE SYSTEMATIC LAYOUT PLANNING (SLP) DI PT. INKA MULTI SOLUSI." JUMINTEN 2, no. 3 (May 31, 2021): 59–70. http://dx.doi.org/10.33005/juminten.v2i3.274.
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PT. INKA Multi Solusi adalah sebuah perusahaan yang bergerak dibidang manufaktur. Perusahaan PT.INKA Multi Solusi memproduksi produk berupa komponen kereta. Untuk membuat produk dibutuhkan raw material, raw material tersebut disimpan dan ditata didalam gudang bahan baku. Namun terdapat kendala dan masalah pada tata letak fasilitas gudang bahan baku di PT.INKA Multi Solusi saat ini, yaitu penataan rak raw material pada gudang kurang efektif karena rak raw material tidak dikategorikan sesuai spesifikasi sehingga pekerja harus mencari satu persatu raw material yang saat itu sedang dibutuhkan dan juga terdapat beberapa rak raw material yang memiliki alat angkut yang sama berada berjauhan sehinggan pengambilan raw material menjadi tidak efektif. Kemudian tata letak fasilitas gudang bahan baku untuk saat ini juga belum memperhitungkan jarak material handling dan ongkos material handling. Dengan menggunakan metode Systhematic Layout Planning (SLP) didapatkan usula layout. Dari hasil penelitian, usulan layout diperoleh menunjukkan pengurangan total jarak perpindahan material handling dan total ongkos material handling, sehingga tata letak pada gudang bahan baku didapatkan pengurang jarak dari layout awal ke layout alternative II dengan efesiensi 32,62%. Selisih pengurangan total momen dengan efesiensi 17,42%. Serta selisih pengurangan total ongkos material handling dengan efesiensi 18,19%.
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Susanti, H. D. "Application of material requirement planning method in raw materials planning on sardine product in PT. Blambangan Foodpackers Indonesia." Food Research 4, no. 6 (September 4, 2020): 2067–72. http://dx.doi.org/10.26656/fr.2017.4(6).228.
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PT. Blambangan Foodpackers Indonesia is one of the big companies in the Banyuwangi area and is a company engaged in the manufacturing industry that is a company processing canned fish. The number of constraints in planning raw material inventories that cause the occurrence of excess or accumulation of raw materials and shortages causes freezing of operational costs. The implementation of the material requirement planning (MRP) system is expected to be able to find out the optimal amount of raw material inventory and the right ordering time to meet production needs with optimal costs. This study was aimed to determine the exact lot size technique based on inventory costs and to compare the MRP method with inventory in the company based on total inventory costs. The research method used was the determination of the lot size and MRP system. The results showed that the lot for lot method for ASCK cans, ASCB cans, ASTB cans, and pasta, while EOQ for ASTK cans, ASEPK cans, sugar, salt and flour. The MRP system in each raw material can be used as an indicator to minimize total inventory costs when compared to the company's method during the previous period.
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Saputra, Rudi Abdika, Inna Kholidasari, Susanti Sundari, and Lestari Setiawati. "ANALISIS PERENCANAAN BAHAN BAKU DI UD. AA DENGAN MENERAPKAN METODE MATERIAL REQUIREMENT PLANNING (MRP)." Jurnal Logistik Indonesia 5, no. 1 (December 1, 2020): 1–12. http://dx.doi.org/10.31334/logistik.v5i1.1180.
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This study discusses the application of the material requirements planning (MRP) method in the planning of raw materials in a furniture company. The purpose of this research is to know the planning of raw materials for furniture products in UD. AA, determine the most suitable inventory model to be applied to material inventory planning and analyze the role of the MRP system in raw material procurement planning. The forecasting method used is the quantitative method of time series analysis, determining the master production schedule, calculating lot sizing (LFL, EOQ, POQ methods). From determining the Master Production Schedule, it is found that the cabinet production plan for the next three months is 4 units per period or week, and based on the calculation of Material Requirement Planning (MRP) it can be seen what components are needed for the manufacture of cabinets, how many and when each component is required. Therefore it is obtained that the total raw material requirement for wood for the next three months is 11.34 m³.
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Sri, Dewi. "RAW MATERIAL INVENTORY PLANNING OF PATIENT MENU USING MATERIAL REQUIREMENT PLANNING (MRP) IN RSIA KENDANGSARI MERR SURABAYA." Jurnal Ekonomi dan Bisnis Airlangga 31, no. 1 (May 6, 2021): 14. http://dx.doi.org/10.20473/jeba.v31i12021.14-27.
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Introduction: Material Requirement Planning (MRP) is a technique or a logical procedure to translate the Master Production Schedule (MPS) of the finished goods or end item into the net requirements for some of the components needed to implement the MPS. MRP is used to determine the amount of material needs to support the Master Production Schedule and when the material needs to be scheduled.Methods: The study is conducted on 13 August 2018 until 12 September 2018 at the installation Nutrition RSIA Kendangsari Merr Surabaya. Collecting data in this study using several methods, including: observation- This stage is conducted in all parts related to the object of study, starting from the Purchase Order (PO) by a head cook up to raw material stored in the storage, discussion- author interviews and collects data to communicate and discuss with the respondents. Respondents in this study are the head of the nutrition unit and head cook of RSIA who have the authority doing the purchasing.Results: Planning of procurement of raw materials to the menu rawon in RSIA can use the Exponential Smoothing method. The discussion has compared two methods of forecasting and the results are consistent with the demand’s patterns of Simple Moving Average method, Exponential Smothing. Forecasting has the lowest error rate by using Exponential Smoothing. The second conclusion is a technique of determining the appropriate Material Requirement Planning in raw material procurement to menu rawon in RSIA is using Lot for Lot.
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Arief, Muhammad, and Supriyadi Supriyadi. "ANALISIS PERENCANAAN PERSEDIAAN BATUBARA FX DENGAN METODE MATERIAL REQUIREMENT PLANNING." Jurnal Manajemen Industri dan Logistik 1, no. 2 (December 2, 2018): 133–39. http://dx.doi.org/10.30988/jmil.v1i2.13.
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A company often has difficulty in controlling raw materials,it could be surplus or minus. Preventing these problem,we made a problem solving. Material needs planning is made for efficient and effective materials application in the execution of work, so the problems because of material is avoided.this research purpose is planning and controlling raw material and supplier selection by Material Requirement Planning (MRP) method. Material Requirement Planning is a method for determining materials or components which make or buy, how much it is needed and when it is needed. The result using the calculation by MRP method show Fix Period Requirement (FPR) is the best method, because the calculation of Fix Period Requirement method got the lowest total cost that is Rp.18,722,190,090, -.FPR is obtained a profit about Rp. 6.096.088.915,00 or about 25% more efficient than the method applied company.
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Taurusyanti, Dewi, and Feri Anggara Putra. "ANALISIS PERENCANAAN KEBUTUHAN BAHAN BAKU DENGAN METODE MRP PADA PT BOGOR MITRADAYA MANDIRI." JIMFE (Jurnal Ilmiah Manajemen Fakultas Ekonomi) 1, no. 2 (March 27, 2018): 22–29. http://dx.doi.org/10.34203/jimfe.v1i2.558.
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ABSTRACTRaw material requirements planning is one way to increase cost efficiency. The purpose of this study wasto determine the proper technique for cost efficiency. The Research in Bogor Mitradaya PT Mandirifacing problems of shortage or excess raw materials in the warehouse or stock outs so disrupt the smoothproduction process. Comparative descriptive research with case study method. The analysis wasconducted using MRP (Material Requirement Planning). The Results showed that raw materialrequirements planning at PT Mandiri Bogor Mitradaya pretty good. But in its activities, sometimescompanies have excess or shortage of raw materials warehouse, causing inefficient costs on 17th feb-23feb 2015. The calculation methods Lot For Lot MRP techniques proven to increase cost efficiency. Thus,the authors recommend techniques Lot For Lot to be considered, especially in decision making.Keywords: Raw Material Planning, Cost Efficiency, Total Inventories, Number Booking
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Lestari, Sri, and Distian Dwi Nurdiansah. "Analisa Perencanaan Kebutuhan Material pada Perusahaan Manufaktur Kertas dengan Metode Material Requirement Planning (MRP)." Jurnal INTECH Teknik Industri Universitas Serang Raya 4, no. 2 (December 27, 2018): 59. http://dx.doi.org/10.30656/intech.v4i2.956.
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The development of the business world is currently experiencing a very rapid growth rate. Planning for the proper procurement of materials will be able to facilitate the company's production activities. Production process activities in companies often experience problems such as inaccurate production, which is caused by delays in the arrival of raw materials, and damage to raw materials due to too long storing in warehouses. This study aims to plan future needs with the Material Requirement Planning (MRP) approach by doing forecasting, making the Master Production Schedule (MPS), Material Requirement Planning (MRP) and conducting a cost analysis of the five methods used. The results of this study are forecasting product demand will be used linear regression method, and effective material requirements planning method with the lowest cost is to use the Lot For Lot (LFL) method of $ 164.48. The application of the Lot For Lot method can reduce costs by 90.06% compared to the Fixed Period Requirements (FPR) method used by the company.
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Ahmad Fauzi, Rizki. "ANALISIS PENERAPAN “MATERIAL REQUIREMENT PLANNING (MRP)” DALAM PENGENDALIAN PERSEDIAAN BAHAN BAKU PANEL PADA PT. CAHAYA BUANA INTITAMA DI BOGOR." Jurnal Ilmiah Binaniaga 7, no. 01 (April 27, 2019): 1. http://dx.doi.org/10.33062/jib.v7i01.271.
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One strategy is to increase productivity by enhancing the company's inventory management system to support the smooth day-to-day operations, the company hopes to establish the amount of raw material inventories efficiently, besides it can reduce the undesirable things, such as: Stock material less raw, raw material stock of redundant, inefficient, disorganized inventory layout, handling errors resulting in damage to the raw materials and others. Models control conducted by PT. Cahaya Buana Intitama is currently using two techniques, namely the calculation of average calculation and the calculation of the last three months the average per period (total months of the current year) to obtain the "Purchase Plan".Keywords: productivity, raw materials, control, material requirements planning.
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Pratiwi, Firda, and Sawarni Hasibuan. "Perencanaan persediaan bahan baku amoxicillin menggunakan metode material requirement planning: studi kasus." Operations Excellence: Journal of Applied Industrial Engineering 12, no. 3 (November 11, 2020): 344. http://dx.doi.org/10.22441/oe.2020.v12.i3.007.
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PT. XYZ is a pharmaceutical company that produces Amoxicillin. In managing its inventory, PT XYZ has not done a good plan to determine the size of raw material orders. The existence of these problems, a study was conducted with the aim of determining Amoxicillin raw material inventory planning to eliminate the accumulation of raw materials at future. The initial stage is forecasting using three methods, namely Linear Regression, Exponential Smoothing and Moving Average. Of the three forecasting methods, the Linear Regression method provides the smallest error accuracy. The chosen method of forecasting must be carried out in advance of verification test (Moving Range) to be used as a basis for planning future raw material requirements. Furthermore, calculations are carried out using the MRP method to determine the size of the order lot for each raw material and reduce the cost of saving. The lot size technique used includes Lot for Lot (LFL), Economic Order Quantity (EOQ), and Fixed Period Requirement (FPR). Of the three lot size techniques used, the LFL method provides the lowest total cost of inventory.
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Yasa, I. Made Sugita, and Kastawan Mandala. "MATERIAL REQUIREMENT PLANNING UNTUK MEMENUHI PRODUKSI PADA CV. BANGUN CIPTA ARTHA DI BADUNG." E-Jurnal Manajemen Universitas Udayana 9, no. 2 (February 3, 2020): 426. http://dx.doi.org/10.24843/ejmunud.2020.v09.i02.p02.
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Inventory management without Material Requirement systems in CV. Bangun Cipta Artha resulted in the lot size for each order of raw materials not optimal. One concept that can be used to plan and control raw materials is the Material Requirement Planning. This study is to determine the number of sizes of raw material orders, the exact order time, the method that produces the lowest cost for each raw material, and the effect of using MRP on inventory costs. This research conducted on 160x200cm spring bed products. Data was analyzed by making production master schedules, determining net requirements, determining lot size, and making MRP tables. Based on the results, the determination the best lot sizing is the order quantiy period which results in a total inventory cost of Rp. 26,475,220 where the total cost is lower, compared to lot for lot method which Rp. 43,464,000. part period balancing Rp. 33,106,576, and conventional method Rp.49,472,912.
Keywords: Material Requirement Planning (MRP), Sizing Lot, Lot For Lot, Balancing Part Period, Period Order Quantiy
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Milic, Dusan, Mirjana Lukac-Bulatovic, Branka Kalanovic-Bulatovic, and Zoran Milovancevic. "Raw material requirements planning in fruit juice production." Ekonomika poljoprivrede 63, no. 4 (2016): 1395–402. http://dx.doi.org/10.5937/ekopolj1604395m.
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Tukino, Shofa Shofia Hilabi, and Heri Romadhon. "Production RAW Material Inventory Control Information System at PT. SIIX EMS Indonesia." Buana Information Technology and Computer Sciences (BIT and CS) 1, no. 1 (January 1, 2020): 8–11. http://dx.doi.org/10.36805/bit-cs.v1i1.681.
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Application of web-based raw material inventory control information system with a bill of materials (BOM) using the PHP and MySQL programming language as a database, and using the SDLC livestock device engineering method with stages of planning, design, implementation, and testing. I create a recording application that provides information about the availability of raw material reducing the error in calculating the amount of raw material based on the bill of material. With this application, it can help to purchase in determining the number of raw materials needed for production based on the master bill of material data.
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Elviana, Vify, and Akmal Suryadi. "PERENCANAAN DAN PENGENDALIAN PERSEDIAAN BAHAN BAKU PAIL CAT MENGGUNAKAN METODE MATERIAL REQUIRMENT PLANNING (MRP) PADA PT. XYZ." JUMINTEN 1, no. 4 (July 6, 2020): 163–72. http://dx.doi.org/10.33005/juminten.v1i4.127.
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Persediaan merupakan aset perusahaan yang memiliki peran penting dalam operasi bisnis, sehingga perusahaan penting untuk melakukan manajemen persediaan yang baik, artinya perusahaan harus mampu mengantisipasi kendala maupun tantangan yang ada dalam pengelolahan persediaan untuk meminimalisasi total biaya yang harus dikeluarkan oleh perusahaan. Permasalahan yang timbul pada persediaan bahan baku di PT XYZ adalah perusahaan melakukan perencanaan dan pengendalian bahan baku hanya berdasarkan pada pengalaman-pengalaman sebelumnya dan tidak berdasarkan pada metode yang sudah baku. Oleh karena itu pembelian bahan baku tidak sesuai dengan permintaan konsumen. Hal tersebut sering menyebabkan terjadinya kelebihan maupun kekurangan stok bahan baku. Kesalahan dalam penentuan besarnya investasi dalam persediaan akan mengurangi keuntungan perusahaan. Adanya persediaan bahan baku yang terlalu besar, akan menambah beban biaya pemeliharaan dan penyimpanan dalam gudang, serta kemungkinan terjadinya penurunan kualitas bahan baku yang dapat menyebabkan berkurangnya keuntungan perusahaan. Namun jika persediaan bahan baku terlalu sedikit maka akan berakibat pada terhambatnya proses produksi, sehingga tidak terpenuhinya permintaan konsumen. Hasil penelitian ini dapat menyimpulkan bahwa perencanaan kebutuhan bahan baku dengan metode perusahaan didapatkan total cost sebesar Rp 1.796.762.429,-, sedangkan metode Material Requirements Planning (MRP) didapatkan total cost sebesar Rp 1.576.011.801,-. Maka dapat disimpulkan telah terjadi penurunan total cost seluruh bahan baku sebesar 12,28%. Hal ini membuktikan bahwa metode Material Requirements Planning (MRP) lebih efisien daripada metode PT. XYZ. Oleh karena itu untuk mendapatkan total cost yang minimum, metode Material Requirements Planning (MRP) diterapkan pada periode Februari-Juni 2020 sehingga didapatkan total cost sebesar Rp 1.576.011.801,-.
Kata Kunci: Material Requirements Planning (MRP), PT XYZ, Pail Cat, Economic Order Quantity (EOQ), Period Order Quantity (POQ), Lot For Lot (LFL).
ABSTRACT
Inventory is a company asset that has an important role in business operations, so the company is important to conduct good inventory management, meaning that the company must be able to anticipate obstacles and challenges that exist in managing inventory to minimize the total cost to be incurred by the company.The problem that arises in the supply of raw materials in PT XYZ is that the company plans and controls raw materials based only on previous experiences and not based on established methods. Therefore, the purchase of raw materials is not in accordance with consumer demand. This often leads to excess or shortage of raw material stock. Mistakes in determining the amount of investment in inventories will reduce company profits. The availability of raw materials that are too large, will add to the burden of maintenance and storage costs in the warehouse, as well as the possibility of a decline in the quality of raw materials that can lead to reduced company profits. However, if the supply of raw materials is too little, it will result in obstruction of the production process, so that consumer demand is not fulfilled. The results of this study can conclude that the planning of raw material needs by the company method obtained a total cost of Rp 1,796,762,429, - while the Material Requirements Planning (MRP) method obtained a total cost of Rp 1,576,011,801, -. Then it can be concluded that there has been a decrease in the total cost of all raw materials by 12.28%. This proves that the Material Requirements Planning (MRP) method is more efficient than the PT. XYZ. Therefore, to get the minimum total cost, the Material Requirements Planning (MRP) method was applied in the February-June 2020 period so that a total cost of Rp 1,576,011,801 was obtained.
KeyWords: Material Requirements Planning (MRP), PT XYZ, Pail Cat, Economic Order Quantity (EOQ), Period Order Quantity (POQ), Lot for Lot (LFL).
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Hasanati, Nidaul, Effrizka Permatasari, Nunung Nurhasanah, and Syarif Hidayat. "Implementation of Material Requirement Planning (MRP) on Raw Material Order Planning System for Garment Industry." IOP Conference Series: Materials Science and Engineering 528 (June 12, 2019): 012064. http://dx.doi.org/10.1088/1757-899x/528/1/012064.
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Yavruyan, Khungianos, Evgeniy Gaishun, Vladimir Kotlyar, Irina Serebryanaya, Anastasiya Filippova, and Alexey Gaishun. "Selection of compositions of ceramic masses based on industrial wastes using mathematical planning methods." E3S Web of Conferences 164 (2020): 14017. http://dx.doi.org/10.1051/e3sconf/202016414017.
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This paper reviews the issue of selecting the compositions of ceramic masses for the production of ceramic blocks made out of technogenic raw materials of a coal series using the methods of mathematical planning. The possibility of replacing classic clay raw materials with non-traditional coal technogenic raw materials (screenings of heaps), which are formed during the processing of heaps with the aim of extracting coal, is considered. The reasons for the growing interest in this technogenic raw material were the reduction of the base of high-quality clay raw materials, the large number of accumulated heaps, as well as the need to reduce the cost of production of ceramic blocks.
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Shah, Kausar Sultan, and Safi Ur Rehman. "Monte Carlo Simulation and Scenario Analysis Based Limestone Quarry Production Planning." International Journal of Economic and Environmental Geology 12, no. 1 (June 8, 2021): 41–45. http://dx.doi.org/10.46660/ijeeg.vol12.iss1.2021.560.
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The key factor behind raw mix design in the cement factory is the appropriate production planning, resulting in high-quality raw material. Quarry managers usually come up with uncertainty-related raw materials due to variations in chemical composition. These uncertainties required efficient planning in terms of useful insight into this problem. This research provides a detailed explanation of scenario analysis of raw materials used in cement manufacturing using Monte Carlo simulation (MCS) and indices. Scenario analysis is used to predict the possibility of best, worst and most likely cases of raw material’s quality. Whereas, Monte Carlo simulation is used to evaluate the inherent uncertainty associated with chemical composition values in order to analyze the impact of truly unpredictable scenarios. The predictive results help in decisions related to production planning, raw mix design optimization and increasing the probability of designing the best plan.
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., SUHARTINI. "PERENCANAAN KEBUTUHAN MATERIAL DENGAN METODE MATERIAL REQUIREMENT PLANNING." Jurnal Teknik Industri 15, no. 2 (March 3, 2016): 190. http://dx.doi.org/10.22219/jtiumm.vol15.no2.190-200.
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Kegiatan produksi yang dilakukan oleh beberapa perusahaan masih menggunakan persediaan material yang banyak agar kegiatan produksi dapat berjalan lancar, akan tetapi kondisi ini dianggap tidak optimal karena banyak sumber daya yang ditanam, sehingga investasi hanya digunakan untuk keperluan kebutuhan material. Pemesanan material yang tidak didukung dengan data-data permintaan produk secara tepat, akan membuat persediaan bahan baku tidak dapat dipastikan sehingga material terkadang banyak dan kadang kala habis. Dalam menggunakan tenaga kerja dan fasilitas produksi yang tidak sesuai dengan kebutuhan permintaan, maka kegiatan produksi tidak berjalan secara efektif dan efisien. Sumber daya yang dimiliki oleh perusahaan harus diketahui secara detail, agar perusahaan dapat menggunakan kemampuan sumber daya yang ada secara optimal. Perusahaan dalam mencapai permintaan produk harus mengetahui kapasitas produksi yang dimiliki, sehingga kemampuan target produksi perusahaan dapat dicapai secara optimal, dengan melakukan pengukuran waktu standar pada operasi kerja dan menentukan performance rating untuk masing-masing operator. Dalam menentukan permintaan produk untuk periode berikutnya menggunakan metode peramalan jenis regresi linier dengan jumlah permintaan produk sebesar 1278 kg. Perencanaan kebutuhan material (MRP) pesanan dapat dilakukan pada hari ke-7 tiap bulan sesuai dengan jumlah masing-masing jenis bahan baku. Production activities which are conducted by some companies still use a lot of material inventory that production activities can run smoothly, but this condition is not considered optimal because many sources in the plant, so the investment is only in use for material. Ordering a material is not supported by data appropriately in product demand, it will make inventory of raw materials can not be sure so that the material is sometimes a lot and sometimes run out. The use of labor and production facilities are not accordance with demand, finally the production activities are not effective and efficient. Resources owned by the company must to be known in detail, so that the company can use capabilities of existing resources optimally. Company to achieve product demand should know the productive capacity, so that the ability of the company’s production targets can be achieved optimally, by measuring standard time at work operations and determine performance rating for each operator. In determining the demand for the product the next period using the method of linear regression forecasting the number of types of product demand of 1278kg. Material requirements planning (MRP) orders can be made on day 7 of each month in accordance with the number of each type of raw material.
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Hadi, Wartoyo. "ANALYSIS CONTROL SUPPLIES RAW MATERIALS TO EFFICIENCY COST, USING THE METHOD OF ECONOMIC QUANTITY ORDER AT CV. PQR." Management Journal of Binaniaga 1, no. 01 (March 30, 2018): 41. http://dx.doi.org/10.33062/mjb.v1i01.130.
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The purpose of the implementation of this research is to find the effectiveness of supplies raw materials, the method of analysis data used in the square is the smallest trend for planning raw materials and controling supplies use method of economic order quantity (EOQ) analyze reorder point. Analysis reorder point and safety stock. And analyzes efficiency cost of raw materials. Forecasting raw materials years 20x7 according to the smallest trend, cloth and dakron happened the difference is greater than of the target needed (according to a company); controling supplies raw materials with the methods eoq in 20x7 more effective than reservations raw materials cloth and dakron and more efficient than cost raw materials. The company should review the policy of forecasting raw material supplies that had been undertaken and make planning supplies the raw material that more accurate using the firm’s historical data and not only targeting the output production next year, so that machines production can be optimized. Considering the use of control supplies with the methods economic order quantity to companies, so this analysis can determine material reservations, supplies safety, maximum supplies to avoid the risk of running out of raw materials, because the companies often happened less dressed up a result of reservations that time is inaccurate, the lack of safety stock and the deferred the delivery of goods which often disturb the production process, by this method can prevent these things, so that the production process can run smoothly and minimize the cost of raw materials supplies.
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Adhi Wicaksana, Bagus Ismail, and Erni Suparti. "Optimisasi Jumlah Produksi Menggunakan Model Newsboy dan Perencanaan Pengendalian Bahan Baku Menggunakan Material Requirement Planning (MRP)." PROZIMA (Productivity, Optimization and Manufacturing System Engineering) 2, no. 2 (June 25, 2019): 88. http://dx.doi.org/10.21070/prozima.v2i1.1918.
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A company have to do inventory control for available guarantying of material, component or item at the time to fulfill production schedule, and available guarantying of product become to consumer and take care of inventory at minimum condition. As object of research is CV. Cita Nasional located in Salatiga. Problems that exist in the CV. Cita Nasional often experience shortages of raw materials caused by internal and external factors. The approach taken to solve this problem by making a production plan using the Newsboy Problem because milk products including perishable product and raw material inventory planning (MRP). From the calculation results obtained the company must produce optimal demand every Monday to Sunday. While the raw material inventory plan using Economic Order Quantity (EOQ) method. Company decreased cost for fresh milk amounting to Rp.35.526.780 and decreased raw material expense cost for whey powder amounting to Rp. 22.573.650.
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Adejuyigbe, Samuel B., and J. A. Ayeni. "Computer Aided Raw Material Requirement Planning (CARMRP) for Job Shop: A Case Study." Advanced Materials Research 62-64 (February 2009): 592–98. http://dx.doi.org/10.4028/www.scientific.net/amr.62-64.592.
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The use of Material Requirement Planning (MRP) and the evaluation of raw materials using Computer to aid the planning of a job shop have been undertaken. Raw Material Planning (MRP) models and computer programme (Visual Basic) to automatically generate the result was developed. A typical job shop industry was used to test the validity of the model and computer programme developed. It is found readily useful in a developed and developing countries where the situation prevails. The result shows an improvement upon the vigorous manual method used in the time part, and minimizes the service level to the firm’s customer and investment in inventory.
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Malinda, Debby, Tita Talitha, and Jazuli Jazuli. "Perencanaan dan Pengendalian Bahan Baku Sarung Batik (Studi Kasus CV. Mitra Setia Usaha)." Applied Industrial Engineering Journal 1, no. 1 (October 4, 2018): 24–30. http://dx.doi.org/10.33633/aiej.v1i1.1722.
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Planning and controlling the needs of both raw materials and finished products is a significant thing for companies to optimize their production. This also applies to CV. Mitra Setia Usaha that engaged in the textile industry with raw materials batik cloth. During this time, CV. Mitra Setia Usaha has not applied standard methods in the planning and control of raw material needs. Determination of the amount of raw materials so far only based on the number of consumer orders. In the last 2 (two years) (October 2014 to September 2016), the company received a request of 5.050,000 meters, but the existing supply of cotton fabric was only 4,920,500 meters. One of the methods that can be applied in the CV. Loyal Business Partners is the Material Requirement Planning (MRP). By applying this MRP-Lot for for lot (LFL) method, CV. Mitra Setia Usaha able to reduce the cost incurred in the procurement of raw materials for one year which initially amounted to 104.328.000 rupiah to 93.817.673 rupiah and can even be reduced again to 83.306.995 rupiah using the method of Order Quantity Period (POQ)
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Martinez, Marina Mosquera. "Differential Raw Material Use in the Middle Pleistocene of Spain: Evidence from Sierra de Atapuerca, Torralba, Ambrona and Aridos." Cambridge Archaeological Journal 8, no. 1 (April 1998): 15–28. http://dx.doi.org/10.1017/s0959774300001281.
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This article reviews the evidence for planning behaviour in Middle Pleistocene hominids. It documents the way in which raw material procurement and tool production were structured during the Middle Pleistocene occupations of the Spanish sites of Sierra de Atapuerca, Torralba, Ambrona and Aridos. Differences in the use of raw materials for different kinds of tool or end-product allow inferences to be drawn about pre-Neanderthal intentionality and cognitive ability. The overall pattern of technological behaviour demonstrated by this study is far removed from the purely ‘opportunistic’ and can reasonably be described as involving both forethought and planning. The work is presented from a techno-economic perspective based on the differential use of raw material types present in the lithic assemblages of these sites, and the proximity of sources of these raw materials in the surrounding landscape.
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Maflahah, Iffan, Machfud Machfud, and Faqih Udin. "MODEL PENUNJANG KEPUTUSAN JADWAL PRODUKSI JUS BUAH SEGAR." Jurnal Teknik Industri 13, no. 1 (March 29, 2012): 51. http://dx.doi.org/10.22219/jtiumm.vol13.no1.51-59.
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Planning and production control are important factors to determine the efficiency derived through proper managementof raw material supply of fresh fruits, production planning and master production schedule. This research aimed to developthe aggregate production planning model, and master production schedule model for juice production from fresh fruit, while also considered the perishability of the fresh fruit. There were several methods applied in the works, namely autoregressive integrated moving average (ARIMA) for forecasting of raw material product sale, mathematical model for raw material supply, linear programming for production planning and prospective production scheduling to develop master production schedule. This research developed software for decision support system called RP_JUS. The results showed that all raw material damage was distributed exponentially. Decision Support Model of Production Schedule for Fresh Fruit Juice can be applied to the processing indudtries that use fresh fruit.
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Regawa, Hans Gerald. "Perancangan alat bantu untuk memperbaiki proses perencanaan produksi pada PT X." Jurnal Manajemen Maranatha 19, no. 1 (November 14, 2019): 21–34. http://dx.doi.org/10.28932/jmm.v19i1.1003.
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Production planning is part of the operational management that is important in a company. By managing production planning properly, the production process in a company will be able to run better. PT X is a company that produces vehicle spareparts for private cars. The company runs make to order system to fulfill the production procss. In the make to order system, a new product will begin to be produced by the company if there is an order from the customer. In this system, a company has inventory i.e. raw material and work in process. The problem are PT X have lack of raw materials and the absence of lead time given by the company to customers about when a product will be sent. To overcome this problem, improvements are made to the existing production planning system. Improvements begin by changing the way raw materials are purchased. This is done by treating the system with order point. With this system, company will never experience a shortage of raw materials because when raw material below order point, company must immediately order new raw materials. Thus the production process will not be disturbed and can run smoothly. In determining when a product will be completed and sent to customers, a production planning system with DSS tools (decision support system) is made using Microsoft Excel tools. By using DSS, the system will automatically display when a product will be finished and when it can be sent to the customer, when to buy raw materials, and how much production order is. Accordingly, the company can provide certainty of information to customers when the products have been produced and shipped.
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Prabowo, Rony. "Pengendalian Persediaan Bahan Baku Oli Untuk Mesin Diesel Tipe G4J-801, G5J-801 dan G7J-801 di PT. Hansan Asembling – Malang." PROZIMA (Productivity, Optimization and Manufacturing System Engineering) 1, no. 1 (April 6, 2017): 33. http://dx.doi.org/10.21070/prozima.v1i1.704.
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Inventories of raw materials is one of the most important elements in the company's operations are continuously must be obtained, processed and resold. The raw material is meant for the smooth running of production operations set. So, we need an optimum inventory levels to meet the needs of both the quantity, quality and time at a low cost. For that we need a system of planning and inventory control are best - well, that inventories of raw materials should be defined and calculated correctly and accurately in order to obtain a low total cost of inventory that can minimize the cost of production. Forecasting approach is expected to represent the number of actual demand in the coming period. Based on the number of requests of forecasting results can be determined raw material inventory control. By using EOQ then firms will be able to minimize the cost of raw material supplies of oil. Companies should pay attention to the order of recording historical data of oil, classification of costs - the cost of orders and storage costs, because such data is necessary to obtain optimal results inventory control. Keywords: inventory control planning, forecasting, EOQ
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Alfeno, Sandro, Danang Rifai, and Muhammad Saepudin. "Utilization of the Django Framework as a Dashboard Model Information System for Raw Material Inventory on PT Bimasakti Karyaprima." Aptisi Transactions On Technopreneurship (ATT) 1, no. 2 (August 25, 2019): 192–202. http://dx.doi.org/10.34306/att.v1i2.46.
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The aim of the research is to analyze the raw material inventory and design a dashboard system that can help achieve company goals. The research method used is the method of analysis of stash, software design methods, and methods of software testing. The design analysis method used is the SWOT analysis, the design method used is the design concept using UML diagrams, the soft test method uses the Black Box concept. The results achieved are a dashboard system used by the Warehouse Section and Production Section to monitor raw material inventories and production performance. The conclusion of this study is that the dashboard application that has been made can help the Warehouse and Production Section to monitor raw material inventory and production performance in real time. This web application provides information easily, quickly, concisely and interactively which includes raw materials for shoe components, office equipment, production tools and general equipment, inventory planning, recommendations and reports on transactions and raw material requests.
Keywords : Dashboard, Material
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Alfeno, Sandro, Danang Rifai, and Muhammad Saepudin. "Utilization of the Django Framework as a Dashboard Model Information System for Raw Material Inventory on PT Bimasakti Karyaprima." Aptisi Transactions On Technopreneurship (ATT) 1, no. 2 (August 25, 2019): 192–202. http://dx.doi.org/10.34306/att.v1i2.87.
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The aim of the research is to analyze the raw material inventory and design a dashboard system that can help achieve company goals. The research method used is the method of analysis of stash, software design methods, and methods of software testing. The design analysis method used is the SWOT analysis, the design method used is the design concept using UML diagrams, the soft test method uses the Black Box concept. The results achieved are a dashboard system used by the Warehouse Section and Production Section to monitor raw material inventories and production performance. The conclusion of this study is that the dashboard application that has been made can help the Warehouse and Production Section to monitor raw material inventory and production performance in real time. This web application provides information easily, quickly, concisely and interactively which includes raw materials for shoe components, office equipment, production tools and general equipment, inventory planning, recommendations and reports on transactions and raw material requests.
Keywords : Dashboard, Material
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Yünsel, Tayfun Yusuf. "Simulation of cement raw material deposits using plurigaussian technique." Open Geosciences 10, no. 1 (December 31, 2018): 889–901. http://dx.doi.org/10.1515/geo-2018-0070.
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Abstract Plurigaussian simulation is a powerful and very effective technique for modelling subsurface rock type domain distribution and in-situ mining reserve analysis. Modelling of subsurface to reveal the rock type distribution plays a key role for raw material extraction planning and plant operations such as extraction, transportation and comminution strategies. Because, the raw material distribution defines the plant operations and final product quality (cement modulus). This study addresses the application of plurigaussian simulation technique to reveal the subsurface rock type distribution of a cement raw material deposit in Turkey. The rock type domains include the limestone, clayey limestone, marl and sandstone which are the basic four rock type classes effecting the cement modulus in the field. The simulation process is carried out using these four rock type data on a determined grid system. A series of tests are made for the validation of the plurigaussian simulation. As a result, the rock type distributions are presented as both 2D-3D graphics and tabulated. The limestone is found as a dominant rock type in the deposit. The marl – a natural clinker - is another widespread raw material in the field and is found interbedded with limestone across the study field. The unwanted sandstone existence exhibited a sparse distribution in reserve body. The results indicated that, the deposit can provide the required raw material for the plant, showing the localised rock type distribution. A detailed raw material extraction planning and scheduling may be made using the results of this study.
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Schäfer, Bernd, Massimo Gasparon, and Per Storm. "European Raw Materials Alliance—a new initiative to increase raw material resilience for a greener Europe." Mineral Economics 33, no. 3 (October 2020): 415–16. http://dx.doi.org/10.1007/s13563-020-00241-4.
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Brantingham, P. Jeffrey. "A Neutral Model of Stone Raw Material Procurement." American Antiquity 68, no. 3 (July 2003): 487–509. http://dx.doi.org/10.2307/3557105.
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Stone tool assemblage variability is considered a reliable proxy measure of adaptive variability. Raw material richness, transport distances, and the character of transported technologies are thought to signal (1) variation in raw material selectivity based on material quality and abundance, (2) optimization of time and energy costs associated with procurement of stone from spatially dispersed sources, (3) planning depth that weaves raw material procurement forays into foraging activities, and (4) risk minimization that sees materials transported in quantities and forms that are energetically economical and least likely to fail. This paper dispenses with assumptions that raw material type and abundance play any role in the organization of mobility and raw material procurement strategies. Rather, a behaviorally neutral agent-based model is developed involving a forager engaged in a random walk within a uniform environment. Raw material procurement in the model is dependent only upon random encounters with stone sources and the amount of available space in the mobile toolkit. Simulated richness-sample size relationships, frequencies of raw material transfers as a function of distance from source, and both quantity-distance and reduction intensity-distance relationships are qualitatively similar to commonly observed archaeological patterns. In some archaeological cases it may be difficult to reject the neutral model. At best, failure to reject the neutral model may mean that intervening processes (e.g., depositional time-averaging) have erased high-frequency adaptive signals in the data. At worst, we may have to admit the possibility that Paleolithic behavioral adaptations were sometimes not responsive to differences between stone raw material types in the ways implied by current archaeological theory.
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Yeo, Ivan. "A model of a production-repair inventory system with time-varying demand and quality-dependent recovery channels." ITM Web of Conferences 36 (2021): 04002. http://dx.doi.org/10.1051/itmconf/20213604002.
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In this paper, we study an inventory system over an infinite planning horizon where a time-varying demand is satisfied by process cycles that consist of a production batch followed by a recovery batch. Our model considers three types of inventory—returned items, serviceable items, and raw material. Furthermore, our model considers two recovery channels—recovery into serviceable items and recovery into raw material. Serviceable items are thus sourced from two inputs—direct recovery and production from raw material. These raw materials can be salvaged from returned items, as well as bought from external sources whenever required. We propose an expression for the unit time total cost as well as a numerical method to find the optimal policy. The properties of the model are studied through numerical experiments, in particular, the feasible situations where hybrid policies are better than pure policies.
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Sari, Mustika Gusnia, Khursatul Munibah, and Untung Sudadi. "Maize Cluster Development Planning As Feed Raw Material in Ciamis District." Journal of Natural Resources and Environmental Management 5, no. 1 (July 1, 2015): 42–50. http://dx.doi.org/10.19081/jpsl.2015.5.1.42.
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Sari, Mustika Gusnia, Khursatul Munibah, and Untung Sudadi. "Maize Cluster Development Planning As Feed Raw Material in Ciamis District." Journal of Natural Resources and Environmental Management 5, no. 1 (July 1, 2015): 42–50. http://dx.doi.org/10.19081/jpsl.2015.5.2.42.
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Yang, Jian, and Xiangtong Qi. "Managing partially controllable raw material acquisition and outsourcing in production planning." IIE Transactions 42, no. 3 (December 19, 2009): 188–202. http://dx.doi.org/10.1080/07408170903232555.
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Septifani, Riska, and Mas'ud Effendi. "Raw Material Requirement Planning of Apple Cider Using Artificial Neural Network." Jurnal Teknologi Pertanian 17, no. 1 (April 1, 2016): 59–68. http://dx.doi.org/10.21776/ub.jtp.2016.017.01.7.
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Putri, Arinda Soraya, and Bagus Imron Rosydi. "Analysis of raw material inventory for insecticide packaging bottle with material requirement planning: a case study." Jurnal Sistem dan Manajemen Industri 4, no. 2 (December 21, 2020): 93–98. http://dx.doi.org/10.30656/jsmi.v4i2.2765.
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PT. Agricon mostly produces 1L package (bottle) pesticides named Spontan insecticide. This study was conducted to analyze and determine the stock inventory of 1L bottles for determining an effective ordering schedule based on the calculation of safety stock and reorder points to optimize planning and inventory. Material Requirement Planning (MRP) method used to determine the effective scheduling of 1L bottle products. Material Requirement Planning is one method used to determine scheduling with advantages such as reducing inventory, reducing set up costs, and reducing idle time. The proposed order scheme for ordering 1L insecticide packaging bottle improve the company on reducing the frequency for ordering bottles from 7 times to 5 times and inventory is more stable and close to demand quantity
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Wandiro, Eko, and Saufik Luthfianto. "OLOS: OPTIMALISASI LOT SIZING PADA SISTEM MRP UNTUK MEMINIMUMKAN BIAYA PERSEDIAAN BAHAN BAKU DI CV. ICHA COLLECTION." JATI UNIK : Jurnal Ilmiah Teknik dan Manajemen Industri 3, no. 1 (November 4, 2019): 35. http://dx.doi.org/10.30737/jatiunik.v3i1.508.
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CV. Icha Collection Pemalang is an industry engaged in the manufacture of bags and wallets. For the manufacture of bags in particular is the LC Type Women's Bags. The problem in this study that arises is the supply of raw materials. Raw material inventory is where there is a delay in the delivery of raw materials in the case of an expedition. This study aims to plan the supply of raw materials at an efficient cost so that raw material needs do not experience obstacles. This research will discuss the planning of LC Bag Type OL with raw material (optimization of lot sizing) on the MRP system. The analysis technique used is plotting past request data, forecasting the future, and MRP. The results of this study are the application of the Lot Sizing method, Part Balancing Period for each raw material for Women Bags Type LC in CV. Icha Collection Pemalang can minimize the total cost of inventory. The Part Balancing Period method has the lowest total inventory cost for each raw material and optimizes 91.33% of raw material inventory. Keyword : MRP, Raw material inventory CV. Icha Collection Pemalang merupakan indusri yang bergerak di bidang pembuatan tas dan dompet, khususnya Tas Wanita Type LC. Permasalahan dalam penelitian ini adalah persediaan bahan baku, dimana terjadi keterlambatan pengiriman bahan baku dalam hal ekspedisi. Penelitian ini bertujuan untuk merencanakan persediaan bahan baku dengan biaya yang efisien sehingga kebutuhan bahan baku tidak mengalami kendala. Penelitian ini akan membahas perencanaan bahan baku Tas Wanita Type LC dengan OLOS (optimalisasi lot sizing) pada sistem MRP. Teknik analisis yang dilakukan yaitu mengeplot data pemintaan masa lalu, peramalan, dan MRP. Hasil dari penelitian ini adalah penerapan metode Lot Sizing, Part Periode Balancing untuk setiap bahan baku Tas Wanita Type LC di CV. Icha Collection Pemalang dapat meminimalkan biaya total persediaan. Metode Part Periode Balancing mempunyai total biaya persediaan paling rendah untuk setiap bahan bakunya dan mengoptimalkan 91,33% persediaan bahan baku.Kata Kunci: MRP, persediaan bahan baku.
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Muzawi, Rometdo, Tashid Tashid, and Mahadir Nasution. "SISTEM MONITORING KETERSEDIAAN BAHAN BAKU COR BETON MENGGUNAKAN METODE MARKET BASKET ANALYSIS." Jurnal Teknologi Dan Sistem Informasi Bisnis 1, no. 2 (July 31, 2019): 1–7. http://dx.doi.org/10.47233/jteksis.v1i2.39.
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Cast concrete is very important in building physical buildings, both for the construction of houses, hotels, bridges, apartments and other physical buildings. The concrete cast material is the most chosen by the community in building buildings because it is easily formed according to the needs of construction and has a strong strength and is resistant to high temperatures. "Inventory is a component of material or finished product available in hand, waiting to be used or sold" (Groebner in Baroto, 2002: 52). Monitoring raw material inventory is a management function that is very important because inventory is a very large investment company, both in terms of value and future functions. So from that the company needs to implement planning regarding inventory control which estimates the accuracy between inputs into output and the accuracy of the quantity or volume of raw materials. In the real world there are many companies that have not noticed the importance of managing raw material inventories, this can be found in companies that experience excess raw materials in warehouses, as well as running out of raw materials. Monitoring inventory that is well implemented can trigger the success of a company in the production sector in a timely manner. In manufacturing companies often encountered a delay in the arrival of raw materials according to a predetermined schedule. This can create panic at the company's management if there is a stock out, where on the other hand the company must immediately fulfill the goods orders. Therefore, monitoring the availability of concrete cast materials is very important to support the smooth production and can avoid the vacuum of concrete cast material. If the availability of concrete cast raw materials does not monitor, it will cause difficulties in knowing whether or not there is still a concrete cast material to be produced. On this basis the author makes a monitoring system for the availability of concrete cast raw materials using the Market Basket Analysis method.
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Iksan, Iksan. "PERENCANAAN DAN PENGENDALIAN PRODUKSI DENGAN MENGGUNAKAN METODE MANUFACTURING RESOURCES PLANNING DI PT. SEMEN GRESIK Tbk." MATRIK (Jurnal Manajemen dan Teknik) 7, no. 1 (June 29, 2018): 47. http://dx.doi.org/10.30587/matrik.v7i1.365.
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PT. Cement Gresik represent big company which is moving in the field of construction material making (cement), where till now still execute the cement production for accomplishment of big enough target, although we know that in this time the economics of state still be drawn also raw material with maximal amount. Therefore to be able to productive in an optimal fashion need by the existence of a planning and controlling the raw material use. The application of manufacturing resources planning (MRP II) method is represent one of the method used for production planning and controlling which is exploited by as optimal as possible utilize to reach the target from production executor. With the MRP II analysis can calculate about the product amount produced, production time, also the raw material required so that knowable later whether the production plan need repair existence in the process or not. The result obtained from analysis that is with method MRP II i.e. the data patterns taken is Single ExponentialSmoothing with the smallest MAPE that is 19 %, while from the calculation of MRP II found on the result of MRP calculation about requirement of overall raw material experience increase equal to 3.920.653 ton/year and also at CRP calculation experience lack of production time capacities equal to 1528967,7 hour/period which is as the effect from the company policy in determination of the productions amount too high and also maximal machine capacities, so that needed by improvement in the production plan. Effort of repair mentioned by as an alternative that is by refunctioning machine which have time to be desisted and addition of the machine but cannot totally because capacities of maximal raw material existing also determination of production target the needed of seeing machine capacities.
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Kudrin, Konstantin Y., and Nataliya V. Mizina. "Recommendations for the development of common mineral resources of the plain part of the Khanty-Mansiysk Autonomous Okrug - Ugra." Yugra State University Bulletin 12, no. 3 (September 15, 2016): 63–70. http://dx.doi.org/10.17816/byusu201612363-70.
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More than 1500 deposits of common mineral resources (planning, construction sands, brick and keramzite clay, siliceous-opal raw materials, sand and gravel, peat) have been explored in the territory of Khanty-Mansi Autonomous Okrug - Yugra. However, these raw materials are imported from other regions of Russia for the needs of the construction industry of the region. Suggestions for adjusting the Strategy for socio-economic development of the Khanty-Mansiysk Autonomous Okrug - Ugra till 2020 and for the period up to 2030 have been made based on the analysis of general geographic location of the deposits, degree of development of transport infrastructure, as well as the needs in this raw material.
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Meng, Qiu Nan, Guang Qin Guo, Wen Jing Shi, and Zhi Ying Nan. "Research on Prediction Method of Alloy Element Yield in Smelting Stage of Iron and Steel Product Based on Improved Support Vector Regression." Advanced Materials Research 562-564 (August 2012): 302–7. http://dx.doi.org/10.4028/www.scientific.net/amr.562-564.302.
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In the actual production of iron and steel enterprises, alloy element yield is difficult to predict because it changes with different materials, processes, etc. Then planning weights of raw materials can't be calculated accurately so as to influence raw material cost planning control. Taking raw material attributes, process parameters, and etc. of smelting stage as the influence factors, the prediction model of alloy element yield is built. In order to increase the model’s prediction accuracy, parameter optimization method for support vector regression (SVR) based on ant colony algorithm (ACO) is designed, which optimizes punish parameter, nuclear parameter and sensitive coefficient. The performance of the SVR algorithm with optimized parameters is compared with the grid search algorithm to verify that the former’s performance and efficiency are better. The prediction method of alloy element yield based on the above improved support vector regression is built, whose regression and generalization performance are better compare with BP neural network, so that the relationship between influence factors and the alloy element yield is established. It can predict alloy element yield accurately according to the actual process and provide methods for realizing lean production in iron and steel enterprises.
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Schiller, Georg, Tamara Bimesmeier, and Anh T. V. Pham. "Method for Quantifying Supply and Demand of Construction Minerals in Urban Regions—A Case Study of Hanoi and Its Hinterland." Sustainability 12, no. 11 (May 26, 2020): 4358. http://dx.doi.org/10.3390/su12114358.
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Urbanization is a global trend: Since 2007 more than 50% of the world’s population have been living in urban areas, and rates of urbanization are continuing to rise everywhere. This growth in urbanization has led to an increased demand for natural resources, in particular non-metallic minerals such as stones, sand and clay, which account for one third of the entire flow of materials. Generally, these materials are traded within regional markets. This close geographical link between the demand for building materials in urban areas and the material supply in the hinterland leads to massive interventions in the natural environment and landscape. These urban–rural linkages can be revealed by applying Material Flow Analysis (MFA) to the built environment in order to trace the flows of building materials. The objective of this paper is to present a method for quantifying regional material flows by considering the supply and demand of building materials. This will be applied to the Vietnamese case study area of Hanoi and its hinterland province Hoa Binh. The results indicate a consumption of almost 60% of the construction mineral reserves in total secured by planning in the hinterland province considering a period of 15 years. However, this does not allow for the general conclusion that raw materials are sufficiently available. The sand reservoirs are only sufficient for eight years and clay reserves are used up after four years. This increases the need to exploit further raw material reserves, which are becoming increasingly scarce and results in stronger interventions in nature In order to safeguard the hinterland from the negative impacts of urbanization, a new understanding of resource efficiency is needed—one that acknowledges both resource efficiency in the construction of urban structures and appropriate resource conservation in the provision of the raw materials from the hinterland. This will require the creation of new integrated planning approaches between urban and regional planning authorities. Regional MFA is one way of realising such an approach.
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Miao, Xian, and Hong Qing Liu. "Approach of Economical Efficiency of Scale for Raw Materials Inventory: A Case (MRP) in Manufacturing." Applied Mechanics and Materials 401-403 (September 2013): 2337–40. http://dx.doi.org/10.4028/www.scientific.net/amm.401-403.2337.
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nformation transformation is important for state-owned manufacturing enterprises to improve the warehousing efficiency. Our work was: that with EDI in Intranet, applying the network database technology, designed the raw materials database and its application system for a large component supplier. Practice shows that this system realizes centralizing and processing for all kinds of contracts, suppliers, wagons, planning, bills for collection and inventory data. Thereby improve validity and timeliness of raw material delivery; reduce inventory management cost.
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Sitepu, Muhammad Haikal, Alison McKay, Tania Alda, Lamsihar Siregar, and Ali Akbar Irawan. "Planning of warehouse area for vise manufacturing by considering raw material requirements." IOP Conference Series: Materials Science and Engineering 851 (May 30, 2020): 012009. http://dx.doi.org/10.1088/1757-899x/851/1/012009.
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Barkai, Ofer, and Gadi Vitner. "An Efficient Algorithm to Produce Sponge Packing Particles." International Journal of Applied Management Sciences and Engineering 7, no. 2 (July 2020): 80–91. http://dx.doi.org/10.4018/ijamse.2020070105.
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The primary research goal was to develop an algorithm for efficiently cutting quadrangular-shaped raw material into smaller quadrangular pieces; one that would reduce to a minimum the percentage of actual waste during the cutting process. The raw material that is the subject of this article is sponge, a material used widely in the furniture industry. Each raw material piece was sliced into smaller pieces for use in a specific product. The algorithm enables product manufacturing with minimal waste by defining a changeable length and a permanent width of the slice, along with the width and length of the product itself. The study suggests that the length of the raw material piece affects the percentage of the reduction. The manufacturer could control waste by pre-planning the length of the piece of spongy raw material. The reduction by waste of usable material before the study was 15%. After the conducted simulation, which tested the effectiveness of the algorithm, the percentage of unusable material decreased to 4% or less a year.
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Gradišar, Dejan, and Miha Glavan. "Material Requirements Planning Using Variable-Sized Bin-Packing Problem Formulation with Due Date and Grouping Constraints." Processes 8, no. 10 (October 2, 2020): 1246. http://dx.doi.org/10.3390/pr8101246.
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Correct planning is crucial for efficient production and best quality of products. The planning processes are commonly supported with computer solutions; however manual interactions are commonly needed, as sometimes the problems do not fit the general-purpose planning systems. The manual planning approach is time consuming and prone to errors. Solutions to automatize structured problems are needed. In this paper, we deal with material requirements planning for a specific problem, where a group of work orders for one product must be produced from the same batch of material. The presented problem is motivated by the steel-processing industry, where raw materials defined in a purchase order must be cut in order to satisfy the needs of the planned work order while also minimizing waste (leftover) and tardiness, if applicable. The specific requirements of the problem (i.e., restrictions of which work orders can be produced from a particular group of raw materials) does not fit the regular planning system used by the production company, therefore a case-specific solution was developed that can be generalized also to other similar cases. To solve this problem, we propose using the generalized bin-packing problem formulation which is described as an integer programming problem. An extension of the bin-packing problem formulation was developed based on: (i) variable bin sizes, (ii) consideration of time constraints and (iii) grouping of items/bins. The method presented in the article can be applied for small- to medium-sized problems as first verified by several examples of increasing complexity and later by an industrial case study.
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Blachowski, Jan, and Anna Buczyńska. "Analysis of Rock Raw Materials Transport and its Implications for Regional Development and Planning. Case Study of Lower Silesia (Poland)." Sustainability 12, no. 8 (April 14, 2020): 3165. http://dx.doi.org/10.3390/su12083165.
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The movement of rock raw materials from source to demand areas is carried out predominately with road and railway transport. The latter is less damaging to infrastructure, the environment and society and is cheaper for longer distances, but it is also less flexible and not widely used. The Lower Silesia region in southwestern Poland is an important producer of rock raw materials and the principal provider of igneous and metamorphic dimension stones and crushed rocks in the country. A multicriteria scoring scheme has been developed and applied to identify mines presently using road transport, that are predisposed to switch to or include a railway form of transport. Four criteria have been proposed, C1—distance to railway loading point, C2—annual production of rock raw material, C3—economic reserves, and C4—type of rock raw material. The scoring scheme (classification) was developed based on the results of descriptive statistics for mines presently using railway or combined road and railway forms of transport. Two scenarios were analyzed, one with equal weights (0.25) and the other with higher significance of C1 = 0.40 and C2 = 0.30, and lower significance of C3 = 0.20 and C4 = 0.10. In the result, 24 mines were identified and ranked in terms of their potential to introduce railway transport. The proposed methodology can be used universally for other regions and countries, and the results will be included in drawing up regional spatial development policies.
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Ravichandran, N. "Supply Chain Planning in a Process Industry in India: A Case Study." Metamorphosis: A Journal of Management Research 4, no. 2 (July 2005): 157–70. http://dx.doi.org/10.1177/0972622520050206.
Full textAbstract:
This case study documents the experience of using formal methods and modeling techniques in planning the components of supply chain in the context of a process industry unit located in western India. More specifically, details related to formal methods which will enable the management to improve efficiency related to raw material sourcing, materials planning, facilities planning and inventory management of package material are presented. The contextual information has been documented as a management case for teaching purposes at Indian Institute of Management, Ahmedabad. In the last segment of this case study, we summarize the experience in using this case in the class room. More specifically, the learning objectives, the set of issues discussed in the class and the experience in using this case are presented.
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Vincevica-Gaile, Zane, Tonis Teppand, Mait Kriipsalu, Maris Krievans, Yahya Jani, Maris Klavins, Roy Hendroko Setyobudi, et al. "Towards Sustainable Soil Stabilization in Peatlands: Secondary Raw Materials as an Alternative." Sustainability 13, no. 12 (June 14, 2021): 6726. http://dx.doi.org/10.3390/su13126726.
Full textAbstract:
Implementation of construction works on weak (e.g., compressible, collapsible, expansive) soils such as peatlands often is limited by logistics of equipment and shortage of available and applicable materials. If preloading or floating roads on geogrid reinforcement or piled embankments cannot be implemented, then soil stabilization is needed. Sustainable soil stabilization in an environmentally friendly way is recommended instead of applying known conventional methods such as pure cementing or excavation and a single replacement of soils. Substitution of conventional material (cement) and primary raw material (lime) with secondary raw material (waste and byproducts from industries) corresponds to the Sustainable Development Goals set by the United Nations, preserves resources, saves energy, and reduces greenhouse gas emissions. Besides traditional material usage, soil stabilization is achievable through various secondary raw materials (listed according to their groups and subgroups): 1. thermally treated waste products: 1.1. ashes from agriculture production; 1.2. ashes from energy production; 1.3. ashes from various manufacturing; 1.4. ashes from waste processing; 1.5. high carbon content pyrolysis products; 2. untreated waste and new products made from secondary raw materials: 2.1. waste from municipal waste biological treatment and landfills; 2.2. waste from industries; 3. new products made from secondary raw materials: 3.1. composite materials. Efficient solutions in environmental engineering may eliminate excessive amounts of waste and support innovation in the circular economy for sustainable future.