scholarly journals IDENTIFICATION EXISTENCE OF BULLWHIP EFFECT ON SUPPLY CHAIN PT. ABC

2016 ◽  
Vol 9 (1) ◽  
pp. 91
Author(s):  
Yulie Megawati

Bullwhip effect is the main evidence of inefficiency in the supply chain of a company. Bullwhip effect describes the tendency of increasing the number of purchases of raw material supply chain<br />as a result of the inability to predict the increase in the number of requests. This study is the high level of inventory, whether as a result of the bullwhip effect or was due to an increase in demand. The purpose of this study was to determine the contribution of each factor causes of the bullwhip effect, identify the factors that provide the greatest impact on supply chain performance and find solutions to reduce the impact caused. The approach of this research is done by collecting data for inventory movement in the period 2003-2007, analyzing the interaction between members in the supply chain. Theory - the theory was used to create a research model. Data analysis is done by analyzing graphs and statistical analysis for the right to draw conclusions from this research. Results from this study that the coordination of “end to end” supply chain to reduce the impact of<br />bullwhip effect in supply chain

Author(s):  
Meilita Tryana Sembiring ◽  
Feby Sanna Sibarani

PT. XYZ merupakan perusahaan yang bergerak dalam produksi produk – produk olahan teh. Perusahaan telah memproduksi berbagai varian the yakni bentuk mau pun jenis teh. Objek penelitian ini ialah the dalam kemasan botol kaca dengan ukuran 220 ml. Ukuran the tersebut dipilih berdasarkan akumulasi dari penjualan the tertinggi. Terdapat perbedaan pada prediksi jumlah produksi yang akan dilakukan. Prediksi jumlah produksi dapat dilakukan dengan melakukan peramalan permintaan serta penggunaan metode yang tepat. Rantai pasok yang diteliti pada PT. XYZ terdiri atas Manufaktur (Vendor), Kantor Penjualan, dan Dister. Awalnya peramalan dilakukan pada masing – masing level rantai pasok dengan metode peramalan yang berbeda – beda. Maka, diperlukan penyeragaman metode peramalan pada masing – masing pelaku rantai pasok. Berdasarkan pengujian metode peramalan yang dilakukan yakni metode Linear, Exponential Smoothing, Moving Average, dan Winter’sMethod. Diperoleh bahwa error terkecil terdapat pada metode peramalan Winter’s Method dengan parameter Level sebesar 0,5, Trend sebesar 0,2 dan Seasonal sebesar 0,6. Parameter error yang digunakan ialah MAPE, MAD, dan MSD. Hasil penelitian menunjukkan bahwa penggunaan metode peramalan yang tepat akan mengurangi dampak dari bullwhip effect yang terjadi pada PT. XYZ.   PT. XYZ is a company engaged in the production of processed tea products. The company has produced various variants of tea, that is the shape and type of tea. The object of this research is the 220 ml glass bottle packaging. The size of the tea is chosen based on the accumulation of the highest tea sales. There is a difference in the prediction of the amount of production to be carried out. Prediction of the amount of production can be done by forecasting demand and using appropriate methods. The supply chain studied at PT. XYZ consists of Manufacturing (Vendors), Sales Offices, and Disters. Initially forecasting is done at each level of the supply chain with different forecasting methods. Therefore, uniform forecasting methods are needed for each supply chain actor. Based on testing the forecasting method that is done namely the Linear method, Exponential Smoothing, Moving Average, and Winter’s Method. Obtained that the smallest error is found in the Winter’s Method forecasting method with a Level parameter of 0.5, a Trend of 0.2 and a Seasonal of 0.6. The error parameters used are MAPE, MAD, and MSD. The results showed that the use of appropriate forecasting methods would reduce the impact of the bullwhip effect that occurred at PT. XYZ


2018 ◽  
Vol 1 (1) ◽  
pp. 61-66
Author(s):  
Tasya Lianisari ◽  
Amnil Wardiah Hasibuan ◽  
Riri Sintia Subakti ◽  
Sumarni Siregar ◽  
Yeni Mardiah ◽  
...  

Number of studies stated that a pattern of short supply chain will reduce the impact of the bullwhip effect, because their interpreting data and information systems that are less integrated in each supply chain can be minimized. Therefore, this research seeks to confirm a pattern of supply chain at charcoal home industry di South Tangerang. Results confirmed that there are still constraints on every supply chain process in the production of the industry, as well as still haven't been able to resolve the existing problems in the supply chain of the production process. Policy recommendation for the industry is the industry needs to have warehouse to store and maintain inventory, both raw material inventory and production inventory.


2021 ◽  
Vol 13 (2) ◽  
pp. 780
Author(s):  
Anna Walecka

The aim of this article was to present the results of empirical research conducted in enterprises of all sizes operating in Poland and Central Europe. The study focused on the impact of relational capital on the prevention of and intervention in the event of a crisis in a company. The author assumes that there is a link between a company’s relational capital and its susceptibility to crisis phenomena. The research carried out allowed different conclusions to be drawn. It turns out that the studied companies were characterized by a high level of relational capital. Their internal relational capital—particularly the relations between employees and company owners—was especially important to them. Relations of the surveyed companies with external stakeholders were also important. In response to the question about the role of relational capital in anti-crisis measures undertaken by companies, it appears that the relational capital of the companies surveyed allowed them, in their opinion, to avoid many crisis situations. Thanks to the right attitudes of the surveyed companies’ stakeholders, they have often managed to avoid crises. This situation also applies to the recent crisis caused by COVID-19.


Author(s):  
ERFANTI FATKHIYAH ◽  
Cyrilla Indri Parwati

The process of delivering manufactured products to the hands of consumers, technically the product flow that occurs ie products in the form of finished goods will move from the factory warehouse to the consumer through a series of channels and distribution facilities. This distribution starts from the finished goods warehouse, distribution warehouse, retailer up to the wearer. The existence of various parties involved and coordinate in the flow of products from the factory to the consumer will form a system known as the supply chain system (Pujawan, 2010). Providers of fast products and services, the right time, and the desired conditions while still providing an optimal contribution to the company. Obstacles that are often encountered in the implementation of supply chain is the lack of coordination in terms of sharing information between the chain, thus causing distortion of information and trigger the occurrence of bullwhip effect that is a spike from the actual demand in the consumer level or downstream chain resulting in a very sharp spike at a far level from the upstream consumer or chain. The result of the bullwhip effect is the excess inventory, because demand is much smaller than the demand of the retailers, the unorganized production schedule, the unutilized production facilities optimally, because the production plan still has a high level of speculation. The use of information systems that have not been effective, causing the flow of information to be distorted or distorted, resulting in chaos in the flow of products that occur bullwhip effect and indirectly affect the cash flow of the company. The final result of the research is the application of Web-based Information Sharing System on the distribution channel that can be used efficiently and can provide information deviations that occur between the chains. The hope of stock monitoring results can be used as a control in looking at stock inventory in distributors and retail, so if there is a bullwhip effect, it will appear warning and immediately addressed by the distributor.Keywords: information sharing system, bullwhip effect, distortion of information.


Author(s):  
Aida Mekhoukhe ◽  
Nacer Mohellebi ◽  
Tayeb Mohellebi ◽  
Leila Deflaoui-Abdelfettah ◽  
Sonia Medouni-Adrar ◽  
...  

OBJECTIVE: the present work proposed to extract Locust Bean Gum (LBG) from Algerian carob fruits, evaluate physicochemical and rheological properties (solubility). It aimed also to develop different formulations of strawberry jams with a mixture of LBG and pectin in order to obtain a product with a high sensory acceptance. METHODS: the physicochemical characteristics of LBG were assessed. The impact of temperature on solubility was also studied. The physical and the sensory profile and acceptance of five Jams were evaluated. RESULTS: composition results revealed that LBG presented a high level of carbohydrate but low concentrations of fat and ash. The LBG was partially cold-water-soluble (∼62% at 25°C) and needed heating to reach a higher solubility value (∼89% at 80 °C). Overall, the sensorial acceptances decreased in jams J3 which was formulated with 100% pectin and commercial one (J5). The external preference map explained that most consumers were located to the right side of the map providing evidence that most samples appreciated were J4 and J2 (rate of 80–100%). CONCLUSION: In this investigation, the LBG was used successfully in the strawberry jam’s formulation.


2021 ◽  
Vol 11 (4) ◽  
pp. 1946
Author(s):  
Linh Thi Truc Doan ◽  
Yousef Amer ◽  
Sang-Heon Lee ◽  
Phan Nguyen Ky Phuc ◽  
Tham Thi Tran

Minimizing the impact of electronic waste (e-waste) on the environment through designing an effective reverse supply chain (RSC) is attracting the attention of both industry and academia. To obtain this goal, this study strives to develop an e-waste RSC model where the input parameters are fuzzy and risk factors are considered. The problem is then solved through crisp transformation and decision-makers are given the right to choose solutions based on their satisfaction. The result shows that the proposed model provides a practical and satisfactory solution to compromise between the level of satisfaction of constraints and the objective value. This solution includes strategic and operational decisions such as the optimal locations of facilities (i.e., disassembly, repairing, recycling facilities) and the flow quantities in the RSC.


Author(s):  
Ruiliang Yan ◽  
Zhongxian Wang ◽  
Ruben Xing

Supply Chain Management (SCM) has proven to be an effective tool that aids companies in the development of competitive advantages. SCM Systems are relied on to manage warehouses, transportation, trade logistics and various other issues concerning the coordinated movement of products and services from suppliers to customers. Although in today’s fast paced business environment, numerous supply chain solution tools are readily available to companies, choosing the right SCM software is not an easy task. The complexity of SCM systems creates a multifaceted issue when selecting the right software, particularly in light of the speed at which technology evolves. In this chapter, we use the approach of Analytic Hierarchy Process (AHP) to determine which SCM software best meets the needs of a company. The AHP approach outlined in this paper can be easily transferred to the comparison of other SCM software packages.


Author(s):  
Dimitrios Vlachos

As the practices of offshoring and outsourcing force the supply chain networks to keep on expanding geographically in the globalised environment, the logistics processes are becoming more exposed to risk and disruptions. Thus, modern supply chains seem to be more vulnerable than ever. It is clear that efficient logistics risk and security management emerges as an issue of pivotal importance in such competitive, demanding and stochastic environment and is thus vital for the viability and profitability of a company. In this context, this chapter focuses on a set of stochastic quantitative models that study the impact of one or more supply chain disruptions on optimal determination of single period inventory control policies. The purpose of this research is to provide a critical review of state-of-the-art methodologies to be used as a starting point for further research efforts.


Logistics ◽  
2019 ◽  
Vol 3 (1) ◽  
pp. 5 ◽  
Author(s):  
Antonios Litke ◽  
Dimosthenis Anagnostopoulos ◽  
Theodora Varvarigou

Blockchains are attracting the attention of stakeholders in many industrial domains, including the logistics and supply chain industries. Blockchain technology can effectively contribute in recording every single asset throughout its flow on the supply chain, contribute in tracking orders, receipts, and payments, while track digital assets such as warranties and licenses in a unified and transparent way. The paper provides, through its methodology, a detailed analysis of the blockchain fit in the supply chain industry. It defines the specific elements of blockchain that affect supply chain such as scalability, performance, consensus mechanism, privacy considerations, location proof and cost, and details on the impact that blockchains will have in disrupting the supply chain industry. Discussing the tradeoff between consensus cost, throughput and validation time it proceeds with a suggested high-level architectural approach, and concludes as a result with a discussion on changes needed and challenges faced for an in-vivo deployment of blockchains in the supply chain industry. While the technological features of modern blockchains can effectively facilitate supply chain uses cases, the various challenges that still remain, bring in front of us a wide set of needed changes and further research efforts for achieving a global, production level blockchain for the supply chain industry.


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