scholarly journals Comparative Analysis of Raw Materials Control Using JIT and EOQ method For Cost Efficiency of Raw Material Supply in Automotive Components Company Bekasi, Indonesia

Author(s):  
Jakfat Haekal ◽  
Ifnu Setiawan
2020 ◽  
Vol 12 (5) ◽  
pp. 1887
Author(s):  
Yang Bai ◽  
He Yang ◽  
Yu Zhao ◽  
Min Zhang ◽  
Jinyuan Qin ◽  
...  

A large number of sand shrubs have been planted in western China, especially in Inner Mongolia. Sand shrubs produce a large amount of stump residue, and wood biomass power generation enterprises that use stump residue as raw materials have emerged in Wushen Banner and other areas. In this paper, the Mixed Integer Linear Programming (MILP) model is used to optimize the raw material supply chain of forest biomass power generation enterprises. Optimizations with different objectives represent the choices of different stakeholders. The optimization results are listed as follows. (1) The self-issuance behavior of enterprises is inconsistent with the enterprise behavior required by social planners; (2) When social planners only pay attention to environmental benefits, the utilization rate of raw materials in towns located far from a power plant will be greatly reduced, which is not conducive for the reuse of stump residue; (3) When social planners consider economic, environmental, and social benefits simultaneously, the utilization rate of raw materials in each town will be significantly improved, resources will be effectively utilized, and certain economic benefits will be realized; (4) It is possible to reduce the difficulty of achieving optimization goals by promoting industrial development and encouraging technological progress.


2021 ◽  
Vol 6 (2) ◽  
pp. 151-158
Author(s):  
Dedi Rozaq Prastyo ◽  
Sri Dianing Asri

PT. Penjalindo Nusantara is a manufacturing company in the packaging field where production depends on customer demand or what is commonly known as job orders so that timely production work and availability of sufficient materials are mandatory for the company. There was a problem in the implementation of the raw material supply strategy by PT. Penjalindo Nusantara caused delays in the supply of raw material stocks. The solution to this problem is to apply the Apriori algorithm to find out what raw materials are being purchased simultaneously so that it can be the basis for implementing a purchasing strategy in supporting the effectiveness of procurement of raw material stocks and also saving time in sending raw materials by suppliers. This research uses a Web-based data mining application to find the raw material purchase pattern. The result of this research is obtained 11 patterns of purchasing raw materials using a minimum value of 90% support and a minimum of 100% confidence with a lift ratio of 1 as a reference for determining which raw materials will be purchased at the same time.


2021 ◽  
Vol 5 (1) ◽  
pp. 1
Author(s):  
Angela v. Beckh Bacchetta ◽  
Volker Krümpel ◽  
Ella Cullen

By combining blockchain with physical tracking technologies, raw materials can potentially be traced throughout their global supply chains. Physical tracking technologies enable observing how raw materials move within the physical world, whereas blockchain translates these events into the digital world with an immutable record. This paper presents a taxonomy of different physical tracking technologies and examines if and how the combination of these technologies render raw material supply chains more transparent. Although academic literature highlights the theoretical benefits of combining these transformative technologies, large scale projects are still in their early stages. Following a brief literature review, this paper leverages an empirical approach to classify different tracking technologies, their fields of application and limitations, as well as how these technologies can enable supply chain transparency. Obviously, there is no single technology that can fulfil all requirements along complex supply chains. However, the relevant combination of respective technologies can help bridge gaps by increasing transparency within supply chains.


2012 ◽  
Vol 1 (3) ◽  
pp. 105 ◽  
Author(s):  
Nita Puspita Anugrawati Hidayat

<p style="text-align: justify;">CV.XY-Bandung merupakan perusahaan konveksi yang memproduksi jilbab. Untuk dapat bersaing, perusahaan harus mampu meningkatkan produktivitas dan mengurangi biaya operasional perusahaan.   Dari hasil pengamatan, CV. XY-Bandung belum memiliki tata letak yang baik. Hal ini terlihat dari cara penyimpanan bahan baku di gudang yang belum mengikuti kaidah tata letak gudang. Pada gudang bahan baku, kain diletakkan secara acak sehingga menyulitkan pencarian, kapasitas gudang bahan baku saat ini dikeluhkan tidak mencukupi kebutuhan. Parameter tata letak gudang bahan baku yang baik adalah dipenuhinya ruang secara maksimal dan pemenuhan terhadap permintaan bahan baku yang lebih cepat. Pada penelitian ini, metode <em>class-based storage</em> dan penggunaan rak, memisahkan kain berdasarkan jenis kain di gudang bahan baku mampu memberikan peningkatan kapasitas gudang. Dengan rancangan tata letak gudang bahan baku usulan dapat meningkatkan kapasitas gudang, sehingga mampu memberikan ruang kosong untuk 1600 <em>polybag</em>.</p><h6 style="text-align: center;"><strong><br /></strong></h6><p style="text-align: justify;">CV. XY-Bandung is convection produsen that produce jilbab. To be able competing with others, produsen has to keep improving productivity and do cost efficiency. From observation, CV. XY-Bandung has not had a good layout. It is shown from raw material inventory in storage that has not using storage layout theory. In the storage of raw materials, fabrics are placed by random, make it difficult to search, and the storage of raw materials capacity is unable to fulfill demand. The good parameters for storage of raw materials are optimal utility and fulfillness of raw material demands faster. In this research, class-basedstorage method and shelf, separate fabrics are based on type of fabric in raw material storage that able to improving storage capacity. By proposes the design raw material storage layout, it should be able to increasing storage capacity, thus, it will be able to give space for 1600 polybag.</p>


Minerals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 461
Author(s):  
Frank Melcher ◽  
Valentina Dietrich ◽  
Hans-Eike Gäbler

Growing public interest in getting information on the origin of raw materials used to manufacture goods for daily life has triggered the development of concepts to increase the transparency of raw material supply chains. Analytical proofs of origin (APOs) for raw materials may support those transparency concepts by giving evidence about the origin of a specific raw material shipment. For a variety of raw materials like gemstones, TTT (tantalum, tin, tungsten) minerals, and others, APOs have been developed. The identification of features that distinguish different origins, databases of those features from reliable reference samples, and a data evaluation strategy adopted to the envisaged application scenario are the key aspects of APO methods. Here, an overview is given on APO methods developed for different raw materials and application cases.


Author(s):  
E.V. Novikov ◽  
◽  
N.V. Basova ◽  
A.V. Bezbabchenko ◽  
◽  
...  

The paper presents a comparative analysis of domestic lines for primary processing of industrial spring harvesting hemp that is taken either from rolls or from stems in order to obtain raw material. The indicators of the quality of hemp raw materials and the hemp fiber of the same type obtained from it have been analyzed. The characteristics of the same type hemp and the process of its primary processing have been obtained, without which it is impossible to plan the primary processing of industrial hemp.


Author(s):  
Juliet Twumasi ◽  
Evans Kyeremeh ◽  
Benedict Owusu Yankeyera

The quality of herbs used to make herbal medicinal products largely influences the safety and effectiveness of these herbal treatments. It is therefore important to investigate the extent to which manufacturers are ensuring the quality supply of herbal medicine used in production of herbal medicine. This study examines how small and medium scale manufacturers assure the quality and continual improvement of the raw materials (raw materials) used for production of medicinal products in a developing economy, the state of Ghana, and the methods used by the company. The study adopted exploratory research design. Using interview quide with open ended questions, data was collected from 88 respondents (small and medium scale manufacturers and their representatives). The data was analysed using NVivo 11. Findings of the study indicated that herbs were collected from the wild (forest), physical inspection of the herbs and best manufacturing practices, good relationship management or collaboration were measures used to promote quality of raw material supply. Also, proper documentation or recording of processes and quality measures do not have much attention or acceptance among Traditional Medicine Practitioners (TMPs).


2016 ◽  
Vol 3 (2) ◽  
Author(s):  
Diego Herrero-Alonso ◽  
Antonio Tarriño-Vinagre ◽  
Ana Neira-Campos ◽  
Natividad Fuertes-Prieto

This work provides the keys to the mineralogical and geochemical characterization of black chert from the Vegamián Fm. This formation crops out throughout the whole of the Cantabrian Zone (of Palaeozoic age), one of the geological zones of the Cantabrian Mountains (NW Spain). The geographical distribution of this formation is very wide, surfacing in the provinces of León, Asturias, Palencia and Cantabria.This variety of chert had been included within the group generically known as ‘black chert’, a macrogroup including different types of chert that appear in different Palaeozoic formations in the area and which share a characteristic black colour at the macroscopic level. The characterisation presented here has enabled us to distinguish it from other varieties. In this study, Vegamián chert has been divided into two different groups depending on their textural, mineralogical, geochemical and thermal propierties. Type 1, the most suitable for knapping, is characterized by high content in silica (>97%), laminated matrix and, occasionally, ghost of radiolarians.  In addition, the characteristics specific to this chert make it suitable for lithic knapping processes. To confirm its use by prehistoric populations, this chert will be compared to that found in two Mesolithic sites, the caves of La Uña and El Espertín (León, south versant of the Cantabrian Mountains), the raw materials from which are currently under study.


2019 ◽  
pp. 173-180
Author(s):  
Юрий (Yuriy) Алексеевич (Alekseevich) Морозов (Morozov) ◽  
Ифрат (Ifrat) Назимович (Nazimovich) Зилфикаров (Zilfikarov) ◽  
Елизавета (Elizaveta) Владимировна (Vladimirovna) Морозова (Morozova) ◽  
Аслан (Aslan) Мурадалиевич (Muradalievich) Алиев (Aliev) ◽  
Тимур (Timur) Алгасанович (Algasanovich) Ибрагимов (Ibragimov)

This paper presents the results of an experimental study of the component composition of essential oil samples obtained from various vegetable raw materials of Schisandra chinensis (Schisandra chinensis (Turcz.) Baill.): branches (woody stems), rhizomes with roots and leaves. The extraction of essential oils was carried out by distillation with water vapor followed by extraction from the distillate with ethoxyethane. The largest yield of essential oil in terms of completely dry raw material is registered from rhizomes with roots – 0.99%; the yield from leaves and branches was approximately the same: 0.51% and 0.52%, respectively. A comparative analysis of the component composition of the obtained essential oils was carried out using the gas chromatography / mass spectrometry method. In the essential oil of the leaves 29 detected compounds (identified by 21 connection; dominant components: Cyclohexylmethyl ether sulphurous acid, (+)-trans-nerolidol, δ-cadinene, Tridec-(2E)-EN-1-ol), woody stems 80 connections (identified 65 compounds; dominant components: ß-pinene, Camphene, Bornylacetate, (+)-trans-nerolidol, p-tsimen, Tridecan-2-it, δ-cadinene), rhizomes with roots 78 of the compounds (60 compounds identified; dominant components: δ-cadinene, Bornylacetate, β-pinene, Camphene, Nerolidol-(E), Tridecan-2-it, γ-cadinene, Borneol). For each sample of the studied essential oils selectivity and marker substances were established.


Author(s):  
A.N. Belikov ◽  
◽  
A.V. Egorov

The task of the automated formation of technical specifications within the framework of a given resource and raw material supply is performed using algorithms with a predetermined structure, which are aimed at minimizing the difference between a certain documented model and the existing situation. However, in conditions when an approximation to a given model is impossible due to a lack of resources and raw materials, such algorithms do not fulfill the task. To solve this problem, the article proposes to develop a principle for creating variable algorithms based on the creation of processes for constructing actions. A template of the variational standard model and the rules for its customization by the user are required. The mechanism of action acts as a template for the model of a variable standard. A variational standard is a method of forming an assessment of the desired state of a target object, which can be achieved taking into account the existing restrictions due to raw materials, resources and standards. Mathematically, this task can be reduced to finding the extremum of the objective function with quantitative arguments, however, in contrast to this, the article proposes a solution to the problem for a function with mixed (qualitative and quantitative arguments).


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