scholarly journals Modelling the Demand and Access of Mineral Resources in a Changing World

2021 ◽  
Vol 14 (1) ◽  
pp. 11
Author(s):  
Olivier Vidal ◽  
Hugo Le Boulzec ◽  
Baptiste Andrieu ◽  
François Verzier

Humanity is using mineral resources at an unprecedented level and demand will continue to grow over the next few decades before stabilizing by the end of the century, due to the economic development of populated countries and the energy and digital transitions. The demand for raw materials must be estimated with a bottom-up and regionalised approach and the supply capacity with approaches coupling long-term prices with energy and production costs controlled by the quality of the resource and the rate of technological improvement that depends on thermodynamic limits. Such modelling provides arguments in favour of two classically opposed visions of the future of mineral resources: an unaffordable increase in costs and prices following the depletion of high quality deposits or, on the contrary, a favourable compensation by technological improvements. Both views are true, but not at the same time. After a period of energy and production cost gains, we now appear to be entering a pivotal period of long-term production cost increases as we approach the minimum practical energy and thermodynamic limits for many metals.

2020 ◽  
Vol 1 (1) ◽  
pp. 1-10
Author(s):  
Yulia Maulidyanti Rosdiana ◽  
Iriyadi Iriyadi ◽  
Diah Wahyuningsih

In each production process, it is possible there will be a discrepancy between the product that has been produced and with the standard, which referred to a defective product or a damaged product. The defective product or damaged product will affect the increase in production costs because the defective product has absorbed production costs from the beginning and it can cause losses to the company. Thus the company must make quality improvements to make the quality of the products produced more consistent and so that there are no more defective products. Improvement of this quality is needed by the existence of expenditure which is called quality cost. Quality costs are part of the production costs. With the existence of defective products or damaged products, it will cause production costs to increase because the company must pay for the process of reworking or reproducing. Therefore, by improving quality through quality costs, it is expected that production costs will be reduced. Production processes that pay attention to quality will reduce the possibility of product defects. Thus the company's production costs will be more efficient but still pay attention to the quality of the products produced. The purpose of this report is to find out how to supervise quality costs of UMKM in improving production cost efficiency. The author conducts community service at the UMKM Heriyanto which is a UMKM engaged in the shoe industry, especially adult women's shoes located on Jl. E. Sumawijaya, Sindang Barang Village, Gang Jambekiuna, Pasir Eurih Village, Taman Sari District, Bogor Regency.The results of the study show that the quality cost component found in the UMKM Heriyanto consists of prevention costs, internal failure costs, and external failure costs. In UMKM Heriyanto there is no apprasial cost because there is no quality control or checking activity for the product. In addition, the calculation of production costs in UMKM Heriyanto is quiet basic and simple because it does not separate the cost of direct raw materials from indirect raw materials, direct labor with indirect labor, and there are some overhead costs that are not taken into account. Internal failure costs consisting of excess raw materials have a significant influence on the cost of producing shoes for UMKM Heriyanto for all types of shoes. Thus the excess of this raw material must be reduced because it can affect the amount of raw material costs directly on production costs. If UMKM Heriyanto can implement the calculation of this quality cost, then in the next production it can reduce the cost of excess raw materials and UMKM Heriyanto can make production cost efficiency of 15%.                                               Keywords: qualitycosts, production cost, cost effieciency


Author(s):  
Florian Ielpo

This chapter covers the economic fundamentals of commodity markets (i.e., what shapes the evolution of the price of raw materials) in three steps. First, it covers the theories explaining why the futures curve can be upward or downward sloping, an essential element for commodity producing companies. The evolution of inventories and hedging pressures are the two dominant sources of explanation. Second, the chapter reviews the fundamentals of commodity spot prices: technologies, supply, demand, and speculation. Production costs draw the long-term evolution of prices, but demand and supply shocks can trigger substantial variations in commodity prices. Third, the chapter presents how commodity prices interact with the business cycle. Commodities are influenced by the world activity but can also have a material impact on it.


2021 ◽  
Vol 1028 ◽  
pp. 365-370
Author(s):  
Diba G Auliya ◽  
Soni Setiadji ◽  
Zulfi Mofa Agasa ◽  
Fitrilawati ◽  
Norman Syakir ◽  
...  

Polydimethylsiloxane (PDMS) has been widely used as a vitreous humour substitution in vitreoretinal surgery. Due to its limited availability and increasing domestic needs, the price of PDMS in Indonesia became very expensive. Previously, we reported the synthesized of PDMS from a high grade of monomer of 98% of Octamethylcyclotetrasiloxane (D4) and found that all PDMS samples produced high quality samples similar to that of commercial one. However, by considering the ease of obtaining raw materials and also the production costs, the synthesis of PDMS using monomer which easy to be found in Indonesia and low production costs is needed to be developed. Here, we reported the synthesis of PDMS using low grade of 96% of D4 in order to produce high quality of PDMS with low viscosity that can be used for vitreous humous substitution in vitreoretinal surgery. PDMS samples with low viscosity value of 0.94-1.35 Pa.s have been successfully synthesized from low grade of D4 and MM using ring-opening polymerization method. The yields of PDMS resulted in this research were in the range between 67.27% and 76.26%. From FTIR spectroscopy, it is found that all synthesized samples have structure and functional groups similar to PDMS using high grade of monomer of 98% Octamethylcyclotetrasiloxane (D4). From refractometer and surfgauge measurements, all samples have refractive index in the range of 1,4034-1,4040 and the value surface tension was 21 m.N/m.


2019 ◽  
Vol 4 (1) ◽  
pp. 28-42
Author(s):  
Suprianto Suprianto ◽  
Bina Andari ◽  
Yely Sulistyawati

This study aims to evaluate the calculation of cost of production. The accuracy of the calculation of cost of production is influenced by the suitability in the accumulation and calculation of production costs which includes the cost of raw materials, direct labor costs and other costs (factory overhead costs). This research was conducted at UKM UD. Usaha Baru which aims to determine the calculation of cost of production at UD. Usaha Baru and to find out whether the calculation of cost of production is in accordance with the full costing method. The technique (method) of data analysis used in this study is quantitative analysis. Data collection techniques use interview techniques directly to obtain information from the number of units of monthly production, raw material costs, direct labor costs, and factory overhead costs, as well as other information relating to the calculation of cost of production. Based on the evaluation results for the calculation of raw material costs and labor costs are in accordance with the full costing method. However, the calculation of factory overhead costs is not in accordance with the full costing method because there are costs that have not been included in the calculation of production costs.


Author(s):  
Inna Nazarenko ◽  
◽  
Nataliya Novosad ◽  

The article examines the technology of cooking meat by autoclaving while preserving the chemical properties of the product. Autoclaving has been shown to be one of the main technological steps in canned meat. Sterilization of canned meat is a heat treatment of the product, which ensures the death of microflora to prevent microbiological spoilage at temperate temperatures (15-30oC), and if necessary at higher temperatures, and safety, which guarantees the microbiological indicators of the use of canned food for food. Sterilize meat at temperatures above 100o C, most often at temperatures up to 120o C. It has been determined that sterilization of meat in an autoclave determines the preservation of nutritional value, organoleptic properties, harmless to the consumer and creates the necessary prerequisites for long-term preservation of the quality of canned meat products. The technology of cooking meat is reduced to the choice of parameters (temperature and duration) of heating, which ensure maximum destruction of the microflora with minimal loss of nutritional value. Sterilization is carried out in autoclaves of periodic action. Banks with the product are loaded into the baskets of the autoclave, lowered into the autoclave, seal the device, heated to the desired temperature, withstand the required time, then release the pressure, cool and unload.


2003 ◽  
Vol 53 ◽  
Author(s):  
Antonio M. A. Rebelo ◽  
Sandra Boeira Guimarães ◽  
José Manoel Dos Reis Neto

A importância do estágio atual e futuro de desenvolvimento do Paraná, de um “suprimento adequado” de insumos minerais é discutida frente a atual estrutura do setor mineral e possíveis demandas vindouras da indústria de transformação. Pela análise do segmento de calcário na Região Metropolitana de Curitiba - RMC, “carro-chefe” do setor mineral paranaense, verifica-se que há um descompasso entre o desenvolvimento deste setor e o do moderno parque industrial do estado. Entraves à evolução são devidos principalmente à insuficiência e dispersão do conhecimento geocientífico e tecnológico sobre os distritos mineiros, especialmente seus minérios e o meio físico envolvente, além dos conflitos ambientais e da disputa pelos territórios. A nova realidade de mercado exige políticas atualizadas para o setor mineral, incluindo legislações objetivas e coerentes e estruturas institucionais modernas e descentralizadas. Os pesquisadores, empreendedores e autoridades de planejamento e fiscalização deveriam dispor de: (a) documentação técnico-científica básica adequada; (b) sistemas de informações consolidados; (c) infra-estrutura física e (d) acesso a financiamentos. Tal base de apoio deverá permitir às autoridades ambientais e planejadores afiançar a segurança ambiental dos empreendimentos mineiros e seu desenvolvimento em harmonia com os demais tipos de ocupação do território. Conclui-se, então, que o poder público deve urgentemente criar as “condições básicas necessárias” para que o setor mineral paranaense possa se modernizar, diversificar e ampliar, integrando-se na nova realidade industrial paranaense. MINERAL EXPLORATION AND PARANA STATE DEVELOPMENT: THE CALCAREOUS ROCK SECTOR IN CURITIBA METROPOLITAN REGION Extended Abstract The importance for the current and future apprenticeship of Parana’s State development of “adequate supply” of mineral resources is discussed, facing the current mineral sector structure and possible demands generated by the State’s industrial evolution (Fig. 1). The mineral resources are the basic raw materials for the transformation industry, participating in a diversified range of industrial segments (Fig. 2). It can accumulate expressive values throughout a determined processing technological route which brings about important consequences for the economies in which it participates. In spite of the progress of globalization of the markets in the last decade, one the main vectors of the foreign policy of the developed countries is to guarantee the supply of strategic mineral resources for their economies. In Parana State, the largest geological vocation and production concerns the industrial rocks and minerals, highlighting calcareous rocks (Fig. 3), talc ores, ornamental rocks, clays, industrial sands, and attachés (sand and gravel). The Curitiba Metropolitan Region (CMR) is the main are exploiting and processing calcareous rocks, occupying the first place in domestic production (Fig. 4). Like wise, through the analysis of the calcareous rocks segment in CMR, a “driving force” of Parana’s mineral industry, the main are exploiting structural problems that inhibit the sector modernization were analyzed (Fig. 5) and suggested measures to minimize or eliminate them. Aspects were focused regarding the foreseen ability for the supplies, price and quality of the resources, as well as to the sustainability of this industrial segment face to the modern technological and environmental questions and of territorial occupation (Tab. 1). Considering the current profile and dimension of the mineral sector comparatively to the evolution and complexity already reached by Parana transformation industry, there is a contrasting difference between the development of that sector and current industrial park of the State. It is known that the geoscientific and technological existent knowledge on ores exploitation and routes for mineral processing are located in insufficient levels and dispersed, not configuring density for the growth, diversification and modernization of the sector (Tab. 2). Most enterprises will not reach competitive efficiency levels (Fig. 6), which is reflected in the quantity and quality of the exploited ores and produced resources. In the case of CMR, besides the mining conflicts versus environment, the pressures of the urban expansion on sites traditionally reserved for mining are evident. With such a knowledge and problems, allied to the current management and operational organization it is very unlikely to overcome the barriers of sustainable sector development. Impediments are due mainly to: (a) lack of geoscientific and technological knowledge about the mining districts, especially their ores and the involving landscapes and (b) environmental conflicts and the dispute for territories (Fig. 5). To accelerate the insertion of the mineral sector of Paraná in the new reality of the markets, impelling its modernization, expansion and competitiveness, the existence of updated policies are necessary including objective and coherent legislations and modern institutional structures. The State should provide to researchers, entrepreneurs, planning and inspecting authorities: (a) adequate basic technical-scientific documentation, (b) consolidated information systems, (c) physical infrastructure and (d) fundings access (Fig. 7). Such policies, essential to the planning and integrated development of the State, should be translated to programs and projects multi and inter-institutional, seeking for existent productive chains (Fig. 8). The focus of the actions should be the knowledge and valve of mineral raw materials, seeking to enlarge and diversify their technological and marketing possibilities. The knowledge deptal on the landscapes allied to the planning of the geographical space will allow to the authorities and planners to secure the environmental safety of the mining enterprises and their development in harmony with other types of territorial occupation. It is concluded, then, that the State should urgently create the “necessary basic conditions” so that the Parana mineral sector should be modernized, diversified and grown. The public policies should have in the “adequate supply” of mineral goods, strategic elements for the development of the State.


2019 ◽  
Vol 2 (1) ◽  
pp. 12
Author(s):  
John Fisher Gulo ◽  
Kamil Mustafa ◽  
Ninny Siregar

<p>The cost of production is needed to determine the cost of production of a product. Costs incurred to produce the product must be clear, so that the determination of the cost of production would be appropriate. Imprecision in calculating the cost of production will be misleading in making management decisions. Data collection methods used in this study include: Documentation, Interview, Observation. This study analyzed using qualitative descriptive analysis comparing the theory with actual results of the company. PT MUTIFA in determining the cost of production using the full costing method. PT MUTIFA in determining the cost of production, all costs incurred are treated as production costs, both the cost of major raw materials, cost of auxiliary materials, packaging materials costs and production overhead. Classification of production costs in accordance with the theory that exists is composed of material costs, labor costs and production overhead costs. Total production cost per month of each element calculation the average monthly cost is Rp. 73.111.118,260,- and the average number of finished products Paracetamol tablet 500 mg tablet is as much 566,666.67 per month. Based on data on average production costs in 2009, then the production cost per tablet is .Rp. 129,019.</p>


2021 ◽  
Vol 1 (1) ◽  
pp. 9-14
Author(s):  
Meika Purnamasari ◽  
Nurleli ◽  
Epi Fitriah

Abstract. Just In Time is a system designed to get good quality, get costs, and achieve time and cost as efficiently as possible by eliminating existing waste. This research was carried out in the Forging, Cast and Railroad Division of PT PINDAD (Persero) Bandung, aimed at understanding the timely application of production activities and analyzing the application of just in time to improve production cost efficiency. The method of data collection is done by observing the collected objects. The data analysis technique used is a qualitative descriptive analysis technique. The results of this study indicate that the purchasing system implemented in 2013 is still ineffective, because it still uses a system that uses traditional methods that cause waste of costs and storage space. The company PT PINDAD (Persero) Bandung after implementing a timely production system on one of the products, entered into an agreement with the supplier regarding the quality, quantity, and time of delivery of raw materials by making an agreement with a supplier of the company to minimize production costs. In conducting production activities, the company gets 93.11%  and efficiency levels increase by 5% so that these activities can be said to be efficient. Abstrak. Just In Time adalah suatu sistem yang dirancang untuk mendapatkan kualitas yang baik, menekan biaya, dan mencapai waktu dan biaya seefisien mungkin dengan menghilangkan pemborosan yang ada. Penelitian ini dilakukan di Divisi Tempa, Cor dan Alat Perkeretaapian PT PINDAD (Persero) Bandung, bertujuan untuk mengetahui penerapan Just In Time dalam aktivitas produksi serta menganalisis penerapan Just In Time dalam meningkatkan efisiensi biaya produksi. Metode pengumpulan data dilakukan dengan melakukan observasi pada objek yang diteliti. Teknik analisis data yang digunakan adalah teknik analisis secara deskriptif kualitatif. Hasil penelitian ini menunjukkan bahwa sistem pembelian secara tradisional yang diterapkan pada tahun 2013 masih belum efektif, karena masih menggunakan sistem secara pendekatan tradisonal yang menyebabkan pemborosan biaya dan ruang penyimpanan. Perusahaan PT PINDAD (Persero) Bandung setelah menerapkan sistem produksi secara Just In Time pada salah satu produk, mengadakan kesepakatan dengan pemasok mengenai kualitas, jumlah, dan waktu pengiriman bahan baku dengan adanya kesepakatan dengan pemasok perusahaan dapat meminimalisir biaya produksi. Dalam melakukan aktivitas produksi, perusahaan mendapatkan aktivitas nilai tamba sebesar 93,11% dan tingkat efisiensi meningkat sebesar 5%  sehingga aktifitas tersebut dapat dikatakan efisien. 


2018 ◽  
Vol 3 (1) ◽  
pp. 15-20
Author(s):  
Rusnandari Retno Cahyani ◽  
Anniez Rachmawati Musliffah

DEVELOPING IN FISH FEED FOR SAVING PRODUCTION COSTS OF CATFISH CULTIVATION. Making catfish feed from waste raw materials and the surrounding environment in order to save production cost. The growth of fish depends on the feed intake, but this is not sufficiently well due to the increase in feed prices. Therefore, it is necessary to innovate the production of feed that utilizes the natural resources around the surrounding waste. Development of fish feed to reduce costs by 4 ways i.e. fish feed with organic fertilization, utilization of Azzola plants or mini water spikes, organic feed from growing and the surrounding waste and artificial pellet feed with appropriate technology. Feeding innovation is expected to reduce the production cost of 70% which designate is feed. This devotion partner is a group of Mulyo Tani 1 and Orphanage group of orphanage son of Muhammadiyah Setrorejo, Baturetno. This devotion activity successfully developed catfish farming business by doing continuous feed development.


2021 ◽  
Vol 31 (5) ◽  
pp. 1289
Author(s):  
Popon Rabia Adawia ◽  
Aprilia Puspasari

This study aims to help SMEs for shoe products in calculating the Cost of Goods Manufacture (COGM) appropriately using the process costing method as a strategy to determine the selling price of competitive shoes so that it is hoped that the business can continue. The research was conducted at one of the MSME Shoe Products, namely the Amira Collection, which is located in East Karawang. The comparative descriptive method is used to describe the production costs that occur in the production process including costs to buy raw materials, auxiliary materials, labor costs and factory overhead costs. The COGM calculation results show the variance (difference) between the company's COGM calculation system and the COGM calculation system using the process costing method where the company's COGM calculation results are lower. Keywords: Process Cost; Cost Of Goods Sold; Production Cost; Selling Price.


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