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• Module overview
• 1. Introduction to logistics
  • 1.1. The logistics concept
    • 1.1.1 A question of definition
    • 1.1.2 Technological context
  • 1.2. Evolution of modern business logistics
    • 1.2.1 Materials management or supply-side logistics
    • 1.2.2 Physical distribution or demand-side logistics
    • 1.2.3 The total logistics concept
  • 1.3 Logistics, the critical interfaces

• 2. Supply side logistics: Procurement and materials management

  • 2.1 Materials management
    • 2.1.1 Purchasing and procurement
    • 2.1.2 Production control
    • 2.1.3 Warehousing and storage
    • 2.1.4 Data and information systems
  • 2.2 Quality in logistics
    • 2.2.1 Total quality management
    • 2.2.2 Benchmarking
  • 2.3 Kanban
  • 2.4 Measurement and evaluation
  • 2.5 MRP 1 and 2

• 3. Demand side logistics: Forecasting and order processing

  • 3.1 Customer order processing
  • 3.2 Environmental scanning
    • 3.2.1 The environments
    • 3.2.2 Approaches to scanning
  • 3.3 Logistics needs forecasting
  • 3.4 Lead time components
  • 3.5 Enhancing forewarning of demand

• 4. Inventory management and control

  • 4.1 Basic concepts and rationale for inventory holding
  • 4.2 Inventory costs
    • 4.2.1 Managing inventory costs
    • 4.2.2 Push and pull control methods
  • 4.3 Types of inventory
  • 4.4 Inventory management
    • 4.4.1 Inventory management systems
    • 4.4.2 Computers and inventory management
  • 4.5 Inventory management and business success

• 5. Storage facilities, materials handling equipment and packaging

  • 5.1 The management of warehouses and distribution centres
    • 5.1.1 Storage alternatives
    • 5.1.2 Warehouse design
    • 5.1.3 Productivity associated with warehousing
    • 5.1.4 Warehouse information systems
  • 5.2 Materials handling
    • 5.2.1 Objectives of material handling
    • 5.2.2 Materials handling systems and equipment
    • 5.2.3 Materials handling productivity ratios
  • 5.3 Packaging
    • 5.3.1 The role of packaging
    • 5.3.2 Packaging materials
    • 5.3.3 Packaging design considerations

• 6. Physical distribution transportation system

  • 6.1 The role of transportation in logistics
  • 6.2 Economic and service characteristics of the modes of transport
    • 6.2.1 Rail
    • 6.2.2 Road
    • 6.2.3 Air
    • 6.2.4 Water
    • 6.2.5 Pipeline
  • 6.3 Intermodal transport services
  • 6.4 Transportation cost structures
  • 6.5 Transportation rate profiles
  • 6.6 Modal and carrier selection
  • 6.7 Management of the transport function

• 7. Change and transformation

  • 7.1 Nature of change
    • 7.1.1 The manager's role and change
    • 7.1.2 Transformation and change continuums
    • 7.1.3 Responding late in the change continuum
    • 7.1.4 Rapid change continuum cycles
    • 7.1.5 Increasing organisational responsiveness and agility
  • 7.2 Scale and pace of change
    • 7.2.1 Leading rapid change
  • 7.3 Stages of change
    • 7.3.1 The stages of change and approaches to management
    • 7.3.2 Change and the organisation's development stage
  • 7.4 Communicating change
    • 7.4.1 Guidelines for communicating change
    • 7.4.2 Communicating change to stakeholders

• 8. Building agility and responsiveness

  • 8.1 Organisational agility and the art of rapid change
  • 8.2 Agility and transformational leadership
    • 8.2.1 Transactional Leadership
    • 8.2.2 Transformational Leadership
  • 8.3 Agility and organisational responsiveness
    • 8.3.1 Principles for Constructive Change
    • 8.3.2 Agility and environmental attunement
  • 8.4 Organisational learning and enhanced agility
    • 8.4.1 Learning and organisational life cycles
    • 8.4.2 Double loop learning and the learning organisation
    • 8.4.3 The learning cycle
    • 8.4.4 Leading learning from being adaptive to generative

• 9. Foster innovation and creativity

  • 9.1 Innovation and agility
  • 9.2 Levels of innovation and their impact
    • 9.2.1 Innovation
    • 9.2.2 Improvement
    • 9.2.3 Re-engineering
    • 9.2.4 Reinventing
    • 9.2.5 Re-engineering
  • 9.3 Re-engineering and business process re-engineering
    • 9.3.1 Reengineering and quality improvement
    • 9.3.2 Identifying when to re-engineer processes
    • 9.3.3 To innovate slowly or reengineer?
  • 9.4 The need for speed
  • 9.5 Organise work to facilitate innovative practices and organisational agility
    • 9.5.1 Innovative and agile organisation
  • 9.6 Enhancing diversity and creativity of thinking in teams and work practices
    • 9.6.1 Convergent and divergent thinking
    • 9.6.2 Left- and right- brain activities
    • 9.6.3 How to generate new ideas?
  • 9.7 Creativity and solutions search in teams
    • 9.7.1 Brainstorming
    • 9.7.2 Synectics
    • 9.7.3 Forcing Techniques
    • 9.7.4 Nominal Technique
  • 9.8 Review the use of innovation in work and team practices.
    • 9.8.1 Assess the ability of the team to achieve goals
    • 9.8.2 Review the success of team leadership

3.4 Lead time components

From the perspective of the customer, lead time is the time between placing the order and receiving the delivery. From the supplier's perspective, it is the time between receiving an order and getting paid for it, that is, the period for which cash is tied up, usually taken from the time materials were purchased to produce the product to the time that the customer buys and finally pays for. This concept is further explored in the following reading.

Reading 3.4

Christopher, M (1998), Logistics and Supply Chain Management, 2nd edition, Prentice Hall: UK . pp. 158 - 161.

The purpose of defining lead time is, of course, to reduce uncertainty and inventory (costs). For this reduction to be realised, variable demand as well as demand that is consistent must be considered. When demand is consistent, the lead time and quantity of product demanded are known. Inventory needs to be maintained at cycle stock level . This means that if, for example, the corner shop sells 20 pots of honey every fortnight, regularly, then the beekeeper only needs to have 20 pots available every fortnight. The lead time (fortnight) and demand (20 pots) is known. No extra inventory needs to be maintained. When there is uncertainty in demand or lead time, a safety stock needs to be maintained. The aim is to cover short term variables that occur in demand or lead time.

As stated in section 4.3, forecasting is seldom, if ever, accurate. Demand can hardly ever be predicted with absolute certainty because it varies under the influence of diverse factors. Transport delays and uncertainties make lead times equally variable. To protect against these variables and prevent stock outs, management must decide on maintaining safety stocks at a certain percentage of regular stocks. In addition, reorder levels will have to be identified and processes put in place to arrange timely delivery of stock. We will discuss inventory management in detail in the next chapter.

We arrive, then, at a situation where there is a gap between the customer's and the logistics lead time. The aim should be to reduce this gap as much as possible and meet the customer's expectation as closely as possible. It is often found that the logistics lead time can be shortened by addressing various procedures that are involved. This can often be done by questioning and redefining the basic processes that make up the customer order process. All the processes are interlinked and can only be optimised by taking a holistic approach to shorten the total time taken to produce a given throughput. The optimising should focus on the entire chain of events and not on certain elements of it. This includes mechanical processes as well as human ones, either of which might act as bottlenecks.

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