scholarly journals Inventory Management at the Enterprise in the Field of Probability Models

2021 ◽  
Vol 24 (5) ◽  
pp. 81-91
Author(s):  
Anatolii Kulyk ◽  
Kateryna Fokina-Mezentseva ◽  
Nataliya Boretska ◽  
Aleksii Bilousov ◽  
Svitlana Prokhorchuk
Keyword(s):  
Production Process ◽  
Inventory Management ◽  
Raw Materials ◽  
Probabilistic Approach ◽  
Random Variables ◽  
Erlang Distribution ◽  
Probability Models ◽  
Established Risk Factor ◽  
The Difference ◽  
Normal Law

The inventory management system is designed to continuously ensure the production activities of the enterprise with all necessary resources. The purpose of this study is to build a probabilistic model that can be proposed as a new inventory model, which establishes the relationship of period factors between the purchase of parts and the duration of their suitability, which affect inventory management. The research methods are based on a probabilistic approach using continuous distributions. Using the statistical method, point estimates were found for the studied parameters: mean and standard deviation. The histograms of relative frequencies between dates of two next purchases, volume of purchases of details and days of replacement of the fulfilled details are constructed. The critical areas for the studied parameters are illustrated. The values of the difference in days between the purchases of parts and the values of purchases of parts that meet the normal distribution of random variables with the appropriate parameters, as well as the critical values of the need for parts in the production process. The size of the part reserve, which corresponds to Erlang distribution, was found, depending on the established risk factor. For different values of this factor, the value of the difference in days between the purchases of parts, the size of purchases and the reserve of parts that correspond to the distributions of random variables, as well as the critical value of the need for parts in the production process to avoid downtime. Using the central limit theorem, it is shown that the purchase volume of parts and the volume of used parts are distributed according to the normal law. The study concludes that the probabilistic approach is the basis for forecasting inventory management in the enterprise, taking into account the risks associated with determining the optimal demand for raw materials in the enterprise

scholarly journals ANALISIS NILAI TAMBAH KACANG SANGRAI PADA UD. TARSIUS DI DESA KINNALI KECAMATAN KAWANGKOAN

2016 ◽  
Vol 12 (2A) ◽  
pp. 341348
Author(s):  
Rizky ., Manueke ◽  
Juliana R. Mandei ◽  
Paulus A. Pangemanan
Keyword(s):  
Data Collection ◽  
Production Process ◽  
Direct Observation ◽  
Raw Materials ◽  
Value Added ◽  
Secondary Data ◽  
Primary Data ◽  
Industrial Processing ◽  
The Difference ◽  
The Cost

This research aims to see the difference in value and value added of a product, after experiencing processing in a production process. In the processing of Value Added can be defined as the difference between the value of the product with the cost of raw materials and other inputs not including labor. This Study for to calculate the value 1 kg of raw nuts to 0.73 bean roaster. This research will be implemented since March until June 2016 at UD. Tarsius in Kinali Village, Kawangkoan Sub-district, Minahasa District The data collection includes primary data and secondary data. The primary data obtained through direct interviews with owners of industrial processing of roasted peanuts and employee, as well as direct observation in place research. Secondary data were obtained from various literature related with this study. Research shows that Value Added obtained For 1 kg of raw nuts be roasted peanuts 0.73 that is Rp. 4.105,41 and Value Added to 0.73 bean roaster be roasted beans that have been packaged that is Rp. 6.169,5.*jrm*

scholarly journals Pengendalian Persediaan Bahan Baku Vulkanisir Ban (Studi Kasus: PT. Gunung Pulo Sari)

2016 ◽  
Vol 12 (1) ◽  
pp. 326
Author(s):  
Difana Meilani ◽  
Ryan Eka Saputra
Keyword(s):  
Production Process ◽  
Inventory Management ◽  
Dynamic Method ◽  
Raw Materials ◽  
Minimum Cost ◽  
Raw Material ◽  
Minimum Size ◽  
Safety Stock ◽  
Reorder Point ◽  
Manufacturing Company

The problem of raw materials is the most fundamental issue for a manufacturing company, because the raw material is something that is very important for a production process. Companies must be able to maintain optimal raw material inventory that the production process can run smoothly so as to achieve the production target set by the company and can meet the demand of consumers. PT. Gunung Pulo Sari is one of the manufacturing company engaged in tire retreading. Here there are two types of main raw material of the tire retreading process is the rubber cold rare steak to cook and cook to cook hot rubber. PT. Gunung Sari Pulo do not meet the criteria of good inventory management. So far the company in order raw materials only based on estimates only. We conducted this study in order PT. Gunung Sari Pulo can manage them inventory system by finding the optimum safety stock, determine the total cost of the minimum size of the buyer to use the dynamic method, and the reorder point. Based on the research that has been done then the obtained value of safety stock is 18 units, the total minimum cost is Rp. Rp. 133 991 672, and reordering time (Reorder point) is 93 units.Keywords: Safety Stock, Dynamic Method, Lot Sizing, Reorder Point

scholarly journals Optimalisasi Persediaan Bahan Baku Atap Spandex dengan Metode Q

2021 ◽  
Vol 23 (1) ◽  
pp. 1-8
Author(s):  
Indah Rizkya ◽  
Fernando
Keyword(s):  
Production Process ◽  
Inventory Management ◽  
Raw Materials ◽  
Raw Material ◽  
Economic Order Quantity ◽  
Order Quantity ◽  
Inventory Cost ◽  
Safety Stock ◽  
Total Inventory

Inventory management is one of the most important aspects in light steel construction business activities. The application of inventory management affects the continuity of the production process and improves the quality of service to consumers. Inventory is defined as an asset which includes goods owned by the company and has the potential to be sold within a certain business period in an effort to meet consumer needs at any time. Galvalume raw material inventory for the spandex roof production process often suffers from shortages due to immature planning. The shortage of inventory causes production not to run smoothly. The purpose of inventory management in this paper is to obtain an inventory policy to optimize the total inventory cost. The method used in this study is economic order quantity. Based on the results and discussion. Ordering raw materials will be made 6 times in a year with an order quantity of 116 with a safety stock of 12 units and will be ordered again when the raw materials are in 46 units. Total Inventory Cost (TIC) which was originally IDR 26.350.191,- can be saved to IDR 21.038.827,- so that the total savings that occurred amounted to IDR 5.311.364,- (20,15%).

SELISIH BIAYA PRODUKSI SEBAGAI ALAT PENGENDALIAN MANAJEMEN PT INDO PUSAKA BERAU

2019 ◽  
Vol 3 (02) ◽  
pp. 397
Author(s):  
SAFITRI NURHIDAYATI ◽  
RIZKI AMELYA SYAM
Keyword(s):  
Raw Materials ◽  
Field Research ◽  
Analytical Tool ◽  
Production Costs ◽  
Raw Material ◽  
Labor Costs ◽  
Material Costs ◽  
Library Research ◽  
The Difference ◽  
The Cost

This study aims to analyze whether the difference that occurs in the cost of raw materials, direct labor, and factory overhead costs between the standard costs and the actual costs in PLTU LATI is a difference that is favorable or unfavorable. Data collection techniques with field research and library research. The analytical tool used is the analysis of the difference in raw material costs, the difference in direct labor costs and the difference in factory overhead costs. The hypothesis in this study is that the difference allegedly occurs in the cost of raw materials, direct labor costs, and factory overhead costs at PT Indo Pusaka Berau Tanjung Redeb is a favorable difference. The results showed that the difference in the cost of producing MWh electricity at PT Indo Pusaka Berau Tanjung Redeb in 2018, namely the difference in the price of raw material costs Rp. 548,029.80, - is favorable, the difference in quantity of raw materials is Rp. 957,216,602, - is (favorable) , the difference in direct labor costs Rp 2,602,642,084, - is (unfavorable), and the difference in factory overhead costs Rp 8,807,051,422, - is (favorable) This shows that the difference in the overall production cost budget is favorable or profitable. This beneficial difference shows that the company is really able to reduce production costs optimally in 2018.  

Peran Teknologi Dalam Mengembangkan Potensi Ekspor Topeng Malangan (Analisis Situasional Dan Rencana Solusi)

2018 ◽  
Vol 2 (1) ◽  
pp. 35
Author(s):  
Nurida Finahari
Keyword(s):  
Production Process ◽  
Wood Species ◽  
Management System ◽  
Raw Materials ◽  
Business Management ◽  
Production Equipment ◽  
Cultural Events ◽  
The Arts ◽  
Puppet Show ◽  
Three Stages

The art of chisel mask is developed in Tumpang Malang area as part of dance costume fairs, puppet show andcultural ritual, although in its development, this mask sculpture is also sold and become a tourism commodity. The potentialsales of mask sculptures is increasing, especially because of the demanders are foreign tourists, cultural enthusiasts andcomponent of tourism activities. That is, Topeng Malangan has the potential to be developed as an export commodity. Thesales system is still limited to cultural events or when there is a visit of education and tourism to the arts-padepokan. Thisprompted some people around the padepokan to start a home industry to meet the availability of the mask. In general, theproblems encountered by the craftsmen are (1) availability of raw materials, especially for suitable wood species, (2)production equipment, especially for pre-carving process and preservation of product, (3) there is no standard marketingscheme, (4) does not have a business management system, and (5) highly skilled craftsmen are still very limited. The solutionsoffered are divided into three stages: (1) technological strengthening, including strengthening production process technologyand increasing the number of craftsmen; (2) establishing business management; and (3) establishing trademarks, copyrightsand product marketing expansions

scholarly journals A New Mixed Functional-probabilistic Approach for Finite Element Accuracy

2020 ◽  
Vol 20 (4) ◽  
pp. 799-813
Author(s):  
Joël Chaskalovic ◽  
Franck Assous
Keyword(s):  
Finite Element ◽  
Finite Elements ◽  
Asymptotic Relation ◽  
Probabilistic Approach ◽  
Random Variable ◽  
High Order ◽  
Relative Accuracy ◽  
The Difference ◽  
New Perspective

AbstractThe aim of this paper is to provide a new perspective on finite element accuracy. Starting from a geometrical reading of the Bramble–Hilbert lemma, we recall the two probabilistic laws we got in previous works that estimate the relative accuracy, considered as a random variable, between two finite elements {P_{k}} and {P_{m}} ({k<m}). Then we analyze the asymptotic relation between these two probabilistic laws when the difference {m-k} goes to infinity. New insights which qualify the relative accuracy in the case of high order finite elements are also obtained.

scholarly journals Stochastic Comparisons of Some Distances between Random Variables

Mathematics ◽  
2021 ◽  
Vol 9 (9) ◽  
pp. 981
Author(s):  
Patricia Ortega-Jiménez ◽  
Miguel A. Sordo ◽  
Alfonso Suárez-Llorens
Keyword(s):  
Financial Risk ◽  
Sufficient Conditions ◽  
Random Variables ◽  
Stochastic Ordering ◽  
Random Variable ◽  
Distribution Functions ◽  
Stochastic Comparisons ◽  
Stochastic Orderings ◽  
Absolute Value ◽  
The Difference

The aim of this paper is twofold. First, we show that the expectation of the absolute value of the difference between two copies, not necessarily independent, of a random variable is a measure of its variability in the sense of Bickel and Lehmann (1979). Moreover, if the two copies are negatively dependent through stochastic ordering, this measure is subadditive. The second purpose of this paper is to provide sufficient conditions for comparing several distances between pairs of random variables (with possibly different distribution functions) in terms of various stochastic orderings. Applications in actuarial and financial risk management are given.

scholarly journals Modeling the Supply Process Using the Application of Selected Methods of Operational Analysis

2017 ◽  
Vol 7 (1) ◽  
pp. 50-54 ◽  
Author(s):  
Mária Chovancová ◽  
Vladimír Klapita
Keyword(s):  
Inventory Management ◽  
Economic Efficiency ◽  
Raw Materials ◽  
Service Level ◽  
Effective Management ◽  
Operational Analysis ◽  
Intermediate Products ◽  
The Subject

AbstractSupply process is one of the most important enterprise activities. All raw materials, intermediate products and products, which are moved within enterprise, are the subject of inventory management and by their effective management significant improvement of enterprise position on the market can be achieved. For that reason, the inventory needs to be managed, monitored, evaluated and affected. The paper deals with utilizing the methods of the operational analysis in the field of inventory management in terms of achieving the economic efficiency and ensuring the particular customer’s service level as well.

Synthesis of Polyurethane Dendrimers and Transfer Properties of Dye

2013 ◽  
Vol 457-458 ◽  
pp. 65-71
Author(s):  
Jing Ru Jia
Keyword(s):  
Methyl Orange ◽  
Phase Transfer ◽  
Raw Materials ◽  
Toluene Diisocyanate ◽  
Polymerization Process ◽  
Process Conditions ◽  
Addition Polymerization ◽  
Different Temperatures ◽  
The Difference ◽  
Transfer Properties

The polyfunctional organic compounds 2- hydroxymethyl -1,4- butanediol (trihydric alcohol) and toluene diisocyanate -2, 4- diisocyanate (TDI) were taken as the raw materials in this study. A polyurethane dendrimer was synthesized by utilizing the difference in the reaction activity of two isocyanate groups of TDI at different temperatures. The polymerization process conditions were studied. The addition polymerization of para-position NCO groups occurred at 50 °C, and that of ortho NCO groups occurred at 90 °C. According to the structure of the dendrimer synthesized, methyl orange was used as the guest molecule. Consequently, the aqueous methyl orange showed a phase transfer. With the increase of dendrimer concentration, the transfer rate of methyl orange increased.

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