Tuesday, October 5, 2010

VMI - concerned about the time variable model


VMI (Vendor Managed Inventory), the vendor managed inventory, supply chain management in recent years, a study of more inventory management. VMI embodies the integrated management of key supply chain thinking, the enterprises and their supply chain upstream business in the enterprise procurement conduct closely tied together, to break with the past for business and do not loose the trust between the co-operation, establish collaboration oriented procurement model. VMI spirit of cooperation, mutual benefit, maintain a stable long-term supply and demand, and jointly improve processes. It is worth emphasizing that the discussion here is not simply the sense of VMI's SOI (Supplier Owned Inventory), the supplier has stock, but the discussion of enterprise-class procurement mode VMI.

1, VMI implementation of the elements and can bring benefits

Extensive research shows that VMI implementation cycles for enterprise applications in general need more time, and and business process management and information technology are closely combined. For the manufacturing sector, in most cases, VMI's successful implementation of the first requires the following three key conditions:

(1) information system and sharing platform

Because VMI stress real-time, so enterprises must establish a reliable information-sharing platform, will be the key plan information through platform sharing, real-time inventory information to the network platform to deliver, through the power of information technology to achieve the timely flow of information flow. VMI also means the need for access to information and business integration between other applications, real-time, effective information sharing.

(2) classification of supply relationship management and supply

In addition, as requested by the supplier VMI support, with the same automatic replenishment agreements and business processes with the ability to seamlessly dock. Difficult to do because all the VMI class of materials and individual all involved, a company must effectively classified materials, and participate in related programs provider screened for key maintenance. To improve the supply relationship, companies need to put in more effort.

(3) statistical and mining techniques

As the VMI supplier must be able to support analysis and decision making online, so companies need to provide sufficient operational data to do analysis, to data mining, and continuous improvement of data mining technology, technical achievement into the system to enterprise applications.

Past cases show that the successful implementation of the VMI of the operating companies can have better performance indicators, such as delivery accuracy, quality levels, lead times are an important key to enhance performance on. The author believes that the shortening of the supply cycle is one of the most important improvement to time as the original variables to shorten the supply cycle can also bring a series of chain reactions. Therefore I would like to VMI in the time variables analyzed.

2, VMI analysis in the time variable

In supply chain management has three basic primitive variables is most worthy of attention: time, batch and volume. Can be said that the most basic logistics costs - service system is also relying on the three original variables do support any changes in one variable affect other variables are given. For example, the simple rule that Little: Time * efficiency = inventory, time, inventory levels is an important decision variable, time variable and efficiency are often inversely proportional to the increase, leading to an increase in inventory. Because VMI in supply chain management can significantly shorten the supply cycle, so that there is a clear reduction in inventory levels, so here I will mainly affect the variables of time to analyze.

To an actual case of manufacturing enterprises, for example, for the procurement of critical materials, the traditional mode of procurement practices of the enterprise is in the process of manufacturing continued consumption of inventory, inventory consumption reaches a certain point in time, the relevant decision-makers need to purchase orders to suppliers, vendors began to be made to order (if any stock on the direct supply), production started after the completion of the supply of providers, warehousing companies to receive and implement relevant financial work. Although the key suppliers of materials is only 20 kilometers away from the company about the journey, but the entire procurement cycle is still very long, so companies have to maintain large inventories to cope with change.

Obviously, there are several issues worthy of analysis. First of all relevant business managers in determining the timing of when purchasing more subjective or miss the best time to purchase that may result in insufficient supply or inventory backlog, while suppliers may not be stocked for the demand side (in the many varieties of small batch production mode Next stocking is very difficult to piece things), resulting in the production and then delivery must. As a result, the demand side for the entire procurement cycle will be a long, planned variation, the time variable value becomes higher, also followed by increased uncertainty. And because each purchase order must be considered under the minimum order quantity, so the company must also be a passive acceptance of supply-side supply of large quantities of small batches of behavior, leading storage capacity is tight, liquidity has been devoured by the ever-increasing inventory, materials and production order corresponds to poor. Although the analysis leading to the emergence of drama out of the average inventory level is high, but the phenomenon remains a serious shortage of material, there is the result of idle lag materials.

浣嗗湪VMI妯″紡涓嬶紝璇ヤ紒涓氱殑鐩稿叧娴佺▼鍙戠敓浜嗛噸瑕佸彉鍖栵紝瑙佷笅琛細

浼犵粺閲囪喘妯″紡

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VMI涓嬬殑閲囪喘妯″紡锛?br />
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