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Supply chain management is the strategic coordination of the sequence of organizations involved in producing and delivering a product or service. It involves managing suppliers, logistics, inventory, and customer relationships to ensure an efficient flow of goods and services. This article explores the key issues and benefits of supply chain management, as well as the typical elements and trade-offs involved in managing a supply chain.
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Supply Chain The sequence of organizations - their facilities, functions, and activities - that are involved in producing and delivering a product or service. Supply chain connects suppliers, producers and final customers together in a tework that is essential to the creation and delivery of goods and services. (Value chains are the chain of activities and functions WITHIN a single organization.)
Supply Chain Management (SCM) • The strategic coordination of the supply chain for the purpose of intergating supply and demand management.
Logistics • The part of a supply chain involved with the forward and reverse flow of goods, services, cash and information. • Movement within the facility • Incoming and outgoing shipments • Distribution
Facilities • Warehouses • Factories • Processing centers • Distribution centers • Retail outlets • Offices • …
Functions and Activities • Forecasting • Purchasing • Inventory management • Information management • Quality assurance • Scheduling • Production and delivery • Customer service
Key issues of SCM • Determinate the appropriate level of outsourcing • Managing procurement • Managing suppliers • Managing customer relationships • Being able to quickly identify and respond to problems • Managing risksand uncertainty
Production Distribution Purchasing Receiving Storage Operations Storage Typical Supply Chains
Supplier } Supplier Storage Mfg. Storage Dist. Retailer Customer Supplier Typical Supply Chain for a Manufacturer
A farm-to-market supply chain • Farm (wheat) • Suppliers: equipment, repair, feed, seed, fertilizer, pesticides, energy/fuel • Mill (flour) • equipment, repair, energy • Bakery (bread) • equipment, repair, energy, other ingredients • Supermarket (bread sold to the final customer) Transport
Supplier } Storage Service Customer Supplier Typical Supply Chain for a Service
Supply chain and Cash flow Goods and services Cash flow Reverse logistics Suppliers Consumers Marketing Customers Production Design Logistics
Element Typical Issues Customers Determining what customers want Forecasting Predicting quantity and timing of demand Design Incorporating customer wants, mfg., and time Processing Controlling quality, scheduling work Inventory Meeting demand while managing inventory costs Purchasing Evaluating suppliers and supporting operations Suppliers Monitoring supplier quality, delivery, and relations Location Determining location of facilities Logistics Deciding how to best move and store materials Elements of Supply Chain Management
Benefits of Supply Chain Management • Lower inventories • Higher productivity • Greater agility • Shorter lead times • Higher profits • Greater customer loyalty
Global supply chains • Product design • Products sold globally • Outsourcing to low labor cost countries • Difficulties: language, culture, currency fluctuations, increased tratnsportation costs and lead time, increased need for trust
PROCUREMENT • Purchasing is responsible for obtaining the materials, parts, and supplies and services needed to produce a product or provide a service.Goal: to develop and implement purchasing plans for products and services that support operations strategies. Duties: • Identifying sources of supply • Negotiating contracts • Maintaining a database of suppliers • Obtaining goods and services • Managing supplies • Purchasing cycle: series of steps that begin with a request for purchase and end with notification of shipment recieved in satisfactory condition.
Legal Operations Accounting Data process- ing Purchasing Design Receiving Suppliers Purchasing Cycle • Requisition received • Supplier selected • Order is placed • Monitor orders • Receive orders
Centralized vs. Decentralized purchasing • Centralized purchasing • Purchasing is handled by one special department • Lower prices, better service and closer attention from suppliers, employing specialists • Decentralized purchasing • Individual departments or separate locations handle their own purchasing requirements • Aware to different local needs, quicker response
Trade-offs • Lot-size vs. inventory • Bullwhip effect • Inventory vs. transportation costs (reducing average costs) • Cross-docking • Lead time vs. transportation costs • Product variety vs. inventory • Delayed differentiation • Cost vs. customer service • Disintermediation
Trade-offs • Bullwhip effect • Demand variations begin at the customer end of the chain and become increasingly large as they radiate backwards through the chain. • Inventories are progressively larger moving backward through the supply chain. • Cross-docking • Goods arriving at a warehouse from a supplier are unloaded from the supplier’s truck and loaded immediately onto outbound trucks. Avoids warehouse storage. Reduces holding costs and lead times.
Bullwhip Effect 1(uncertainty) Demand Final customer Initial supplier Backward effect
Amount of inventory = Bullwhip Effect 2 Tier 2 Suppliers Tier 1 Suppliers Producer Distributor Retailer FinalCustomer
Trade-offs • Delayed differentiation • Production of standard components and subassemblies, which are held until late in the process to add differentiating features (expl. automobiles produced without extras) • Disintermediation • Reducing one or more steps in a supply chain by cutting out one or more intermediaries.
Successful Supply Chain • Trust among trading partners • Effective communications • Supply chain visibility • Event-management capability • The ability to detect and respond to unplanned events(uncertainty) • Performance metrics