Logistics & Supply Chain Overview
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Questions and Answers

What is the total number of wood sections required to complete one shutter?

  • 6
  • 2
  • 4 (correct)
  • 8

What is the lead time for ordering frames?

  • Two weeks (correct)
  • Three weeks
  • Four weeks
  • One week

When is the 100-unit order due for delivery?

  • Week 8
  • Week 2
  • Week 4 (correct)
  • Week 3

How many weeks does it take to fabricate wood sections?

<p>One week (D)</p> Signup and view all the answers

After week 1, what will be the projected on-hand inventory of the wood sections considering the scheduled receipt?

<p>70 units (A)</p> Signup and view all the answers

What is the size of the planned order release needed for frames based on lot size ordering mentioned?

<p>320 units (A)</p> Signup and view all the answers

What is the total duration from initiating assembly to delivery for the 150-unit order?

<p>Three weeks (B)</p> Signup and view all the answers

What is the structure of a shutter in terms of its components?

<p>Two frames and four wood sections (D)</p> Signup and view all the answers

What is the main benefit of a shift towards integrated networking in supply chains?

<p>Enhanced resilience and collaboration (B)</p> Signup and view all the answers

How does Nike consolidate its supply chain?

<p>By serving as a manufacturer, distributor, and retailer (C)</p> Signup and view all the answers

What critical element is central to supply chain management?

<p>Translating customer demand into activities (D)</p> Signup and view all the answers

What does capacity management primarily aim to achieve?

<p>Matching supply with customer demand (C)</p> Signup and view all the answers

What distinguishes logistics from supply chain management?

<p>Supply chain management involves strategic partnerships (B)</p> Signup and view all the answers

What is the purpose of enterprise resource planning in supply chains?

<p>To create a software/platform benefiting the customer (C)</p> Signup and view all the answers

What role does logistics play in managing a supply chain?

<p>Moving information and materials effectively (B)</p> Signup and view all the answers

What misconception exists about the relationship between logistics and supply chain management?

<p>Logistics is a subset of supply chain management (D)</p> Signup and view all the answers

How many items are ultimately needed when accounting for the existing inventory?

<p>40 (D)</p> Signup and view all the answers

What does 'gross requirements' refer to in inventory management?

<p>Total expected demand without regard to existing inventory (A)</p> Signup and view all the answers

Which terms describe items that have been ordered but have not yet been received?

<p>Scheduled receipts (B)</p> Signup and view all the answers

What is the purpose of 'MRP processing' in inventory management?

<p>To break down end item requirements into component needs (C)</p> Signup and view all the answers

How is 'projected on hand' inventory calculated?

<p>Scheduled receipts plus ending inventory from the previous period (C)</p> Signup and view all the answers

What are 'net requirements' in inventory management?

<p>The total amount needed after considering inventory (A)</p> Signup and view all the answers

What happens to excess quantities in lot-size ordering?

<p>They are added to the next period's available inventory (B)</p> Signup and view all the answers

What constitutes the primary activities involved in logistics?

<p>Transportation, warehousing, and packaging (C)</p> Signup and view all the answers

What does the term 'ending inventory' refer to?

<p>Quantity available at the close of a period (B)</p> Signup and view all the answers

What is measured during the transformation process to ensure desired outcomes?

<p>Feedback through various measurements (B)</p> Signup and view all the answers

Which of the following is a key aspect of the decision-making process in operations?

<p>Determining what resources are needed and in what amounts (B)</p> Signup and view all the answers

What is essential to ensure the effective use of a decision-making model?

<p>Understanding the model's inputs, methods, and processes (B)</p> Signup and view all the answers

In the context of supply chain management, what does SCM stand for?

<p>Supply Chain Management (D)</p> Signup and view all the answers

Which statement best describes control in the context of operations decision-making?

<p>The comparison of feedback against pre-established standards (A)</p> Signup and view all the answers

What is the role of feedback in the transformation process?

<p>To evaluate outcomes against standards (D)</p> Signup and view all the answers

Which of the following is NOT a typical question addressed in operations decision-making?

<p>How will the organization's reputation be managed? (C)</p> Signup and view all the answers

What is the primary characteristic of a moving average in forecasting?

<p>It updates forecasts by adding the newest data point and removing the oldest one. (A)</p> Signup and view all the answers

How does a weighted moving average differ from a simple moving average?

<p>It focuses primarily on the most recent data points. (A)</p> Signup and view all the answers

What does exponential smoothing depend on?

<p>The previous forecast and the difference between the forecast and actual value. (D)</p> Signup and view all the answers

Which method is the simplest form of regression that identifies a linear relationship between two variables?

<p>Simple Linear Regression. (C)</p> Signup and view all the answers

What is the main goal of simple linear regression?

<p>To minimize the sum of squared vertical deviations from the least squares line. (A)</p> Signup and view all the answers

What assumption is made regarding the variations around the least squares line in simple linear regression?

<p>They should follow a normal distribution. (B)</p> Signup and view all the answers

What limitation exists with simple linear regression?

<p>It fails to consider time-dependent data. (D)</p> Signup and view all the answers

What is a necessary step before applying a linear model to data?

<p>Plot the data to assess linearity. (C)</p> Signup and view all the answers

What is the formula for reorder point (ROP) under certainty?

<p>ROP = d * LT (C)</p> Signup and view all the answers

What factor does not affect the amount of safety stock needed?

<p>Number of employees (B)</p> Signup and view all the answers

Which scenario requires the carrying of safety stock?

<p>When variability is present in demand or lead time (C)</p> Signup and view all the answers

How does increasing safety stock impact stockout risk?

<p>It decreases stockout risk (A)</p> Signup and view all the answers

What does the 'z' in the reorder point formula under uncertainty represent?

<p>Number of standard deviations (A)</p> Signup and view all the answers

In the formula for ROP under uncertainty, what is multiplied by zσd?

<p>Square root of lead time (B)</p> Signup and view all the answers

What relationship does the service level have with stockout risk?

<p>Service level decreases with higher stockout risk (C)</p> Signup and view all the answers

Which of the following does not directly contribute to the calculation of the reorder point under uncertainty?

<p>Cost of safety stock (A)</p> Signup and view all the answers

Flashcards

Safety Stock

A company's strategy for ensuring stock availability despite fluctuating demand and lead times.

Reorder Point (ROP)

The point at which a new order is placed to replenish inventory.

Forecasting

The process of predicting future customer demand for products or services.

Service Level

The probability that demand will be met during the lead time.

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ROP under Certainty

The formula used to calculate the reorder point under certainty (constant demand and lead time).

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Capacity Management

The effort to match supply (production) with demand (customer orders).

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Standard Deviation of Demand (𝜎𝑑)

The standard deviation of demand, representing the variability in demand.

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Inventory Management

Managing the amount of inventory (goods) a company has on hand to meet demand.

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Purchasing

The process of finding and selecting suppliers to provide the necessary materials or services.

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ROP under Uncertainty

The formula used to calculate the reorder point under uncertainty (variable demand or lead time).

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Logistics

The coordination of the flow of information and materials from the origin to the final customer.

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Z-Score (z)

The number of standard deviations from the mean used to determine the safety stock level.

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Supply Chain Management (SCM)

A comprehensive approach to managing all aspects of a product's journey, from raw materials to the end customer.

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Stockout Risk

The risk of running out of stock before the next order arrives.

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Enterprise Resource Planning (ERP)

A software system that helps businesses manage resources and processes across different departments.

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Integrated Supply Chain

A strategic approach where companies directly control the entire production and distribution process.

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Master schedule

A schedule that outlines the dates and quantities of finished products to be produced and delivered.

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Transformation Process

The process of transforming inputs (like labor and materials) into outputs (like products or services).

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Product structure tree

A hierarchical representation of a product's components, showing the relationship between different parts and subassemblies.

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Feedback

Measurements taken at various points in the transformation process to track progress and identify areas for improvement.

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Material Requirements Planning (MRP)

A planning technique that determines the quantity and timing of orders for components based on demand for the finished product.

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Control

The comparison of feedback (measurements) against predefined standards to determine if adjustments are needed.

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Lot-for-lot (L4L)

An MRP ordering strategy where the exact quantity required for each period is ordered.

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Operations Decisions

Decisions about what resources are needed, when they are needed, where the work will be done, how the process will be executed, and who will do the work.

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Lot size ordering

An MRP ordering strategy where orders are placed in fixed quantities, typically a multiple of a predetermined lot size.

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Quantitative Decision-Making

A decision-making approach that uses mathematical models and computational techniques to find the best solution.

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Lead time

The time it takes to receive an ordered component from the supplier.

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On-hand inventory

The amount of inventory a firm has available at a particular point in time.

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Keys to Successfully Using a Model

The model's intended purpose, how it generates results, how the results are interpreted, and the model's assumptions and limitations.

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Sensitivity Analysis

The process of analyzing trade-offs, considering different variables, and assessing the impact of changes in assumptions.

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Projected on-hand inventory

The estimated amount of inventory a firm will have available at a particular point in time, taking into account demand and planned orders.

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Moving Average

A forecasting method that uses a fixed number of recent actual data values to create a forecast. As new data becomes available, the oldest data point is dropped, and the newest data point is added, and the average is recalculated.

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Weighted Moving Average

Similar to a moving average, but assigns more weight to more recent data points. The chosen weights can be adjusted through trial and error.

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Exponential Smoothing

A sophisticated weighted averaging method that assigns exponentially decreasing weights to past data points. Each new forecast is based on the previous forecast plus a percentage of the difference between that forecast and the actual value.

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Associative Forecasting Techniques

Forecasting techniques that use predictor variables to predict the value of a variable.

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Predictor Variable

A variable used to predict the value of another variable, like size influencing house price.

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Simple Linear Regression

The simplest form of regression that assumes a linear relationship between two variables. It aims to find a straight line that minimizes the sum of squared deviations from the line.

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Assumptions of Simple Linear Regression

The assumption that variations around the least squares line are random, and normally distributed. This means that 50% of the deviations are above the line, and 50% are below.

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Limitations of Simple Linear Regression

Limitations of Simple Linear Regression include non-linear relationships, time dependency of data, and missing predictor variables.

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Gross Requirements

The total expected demand for an item during each time period, without considering the amount already on hand. For end items, these quantities are found in the master schedule, and for components, they are derived from planned orders.

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Net Requirements

The total amount of an item needed in each time period, taking into account current inventory and scheduled receipts. Essentially, it is the 'true' demand after considering what you already have and what is coming in.

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Scheduled Receipts

Open orders that are scheduled to arrive from suppliers or within the internal supply chain by the beginning of a period. Represents the inventory that is already on the way.

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Projected On Hand

The expected inventory at the start of each period based on scheduled receipts and previous period's ending inventory. Basically, it's what you're predicted to have on hand before production or sales begin for that time period.

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Planned-Order Receipts

The quantities expected to arrive at the start of a period, representing how much inventory is planned to be received.

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Lot-For-Lot Ordering

A method of calculating inventory requirements for a period, where the planned order receipts match the net requirements. This strategy aims to satisfy the exact need for each period.

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MRP Processing

The process of breaking down end-item requirements into time-phased requirements for all components, sub-assemblies, and raw materials, considering lead times.

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Study Notes

Logistics & Supply Chain

  • Operations management is the management of systems and processes that create goods and/or services.
  • Sustainability focuses on using resources without harming ecological systems.
  • Every aspect of a business impacts, and is impacted by, operations.
  • Financial services include stock market analysis, brokerage, investment banking, and loans.
  • Marketing services encompass market analysis, research, advertising, and product management.
  • Accounting services include corporate accounting, public accounting, and budget analysis.
  • Information services cover corporate intelligence, library services, and management information systems design.
  • Goods are physical items like raw materials, parts, assemblies, and final products (e.g., cars, computers, shampoo).
  • Services are activities offering a combination of time, location, form, or psychological value (e.g., air travel, education, legal counsel).
  • Products are rarely purely good or service; they often contain combinations.

Characteristics of Goods and Services

  • Goods are tangible, low customer contact, high uniformity, measurement is easy, high inventory, and usually patentable.
  • Services are intangible, high customer contact, low uniformity, measurement is difficult, low inventory, and not usually patentable.

Supply Chain

  • Supply chain is the sequence of organizations, facilities, functions, and activities involved in producing and delivering a product or service.
  • The chain's core is raw materials to Supplier → Manufacturer → Distributor → Retailer → Consumer.
  • Retailer → consumer/customer is the only B2C relation in the chain.
  • All elements (except the consumer/customer) are typically B2B relations.

Supply Chain Management (SCM)

  • Aims to strategically coordinate the supply chain to integrate supply and demand management.
  • Problems include fluctuating inventory levels, stock-outs, and late deliveries.

Supply Chain in 2024

  • COVID disrupted global supply chains causing factory slowdowns, supply shortages and lagging recovery.
  • Re-designing SCM to be more resilient to future crises was a result of COVID.
  • Integrated networks are preferred over linear supply chains for better performance.
  • Automation and digital enablement are important for future resilience.

Elements of Supply Chain Management

  • Central to this is translating customer demand into activities along the supply chain.

Operations Decisions

  • What: resources and their quantities.
  • When: resource needs and scheduling.
  • Where: work locations.
  • How: product/service design, work processes, resource allocation.
  • Who: personnel assignments.

Decision-making process

  • Models frequently integrate with qualitative data.
  • Key factors in using models include purpose, usage, interpretation, and assumptions.
  • Models simplify but can struggle with complex real-world factors.

Hard and Soft Skills

  • Hard skills are measurable, technical abilities.
  • Soft skills are interpersonal and social abilities, less measurable.
  • Data-driven decisions are essential for many operational roles.

Sustainability

  • Organizations are increasingly incorporating factors beyond the purely environmental and economic into their decisions.
  • Businesses consider sustainability measures in all areas e.g,. managing waste, and outsourcing.

Competitiveness, strategy, and productivity

  • Companies fail due to neglecting operations strategy, failing to identify competitive threats and opportunities, over-emphasising short-term financial gains, neglecting process improvement and resource investments, poor internal communication, and failing to consider current customer needs.

Aggregated planning

  • Companies need to adjust to demand and capacity fluctuations, which is done via aggregating planning.
  • By grouping products instead of dealing with individual products they smooth production, which is cheaper and avoids under/over-production.
  • Using forecasts to meet demand with capacity.
  • Planning horizon ranges from 2 to 18 months.
  • Methods include managing resource like inventories, workforce and subcontractors.

Master Production Schedule

  • MPS (master production schedule) is a result of disaggregating aggregated planning, and shows what end-items are needed when.
  • Key elements of the MPS are starting inventory, forecasts and customer orders.
  • Outputs of an MPS are projected finished goods inventory, Master Production Schedule and UNcommitted inventory.

Forecasting

  • Forecasting is an estimate of a variable's future value.
  • Crucial for strategic business decisions.
  • Short-term forecasts (3-12 month) are used to manage day-to-day operations, while long-term forecasts inform strategic choices like product lines and facility layouts.

Forecasting techniques

  • Techniques vary; qualitative techniques use experience and judgment and quantitative use measurable data.
  • Techniques like the moving average and exponential smoothing average out random fluctuations found in data.

Inventory Management

  • Inventory is vital but costly, to meet demand while not over-stocking.
  • There are different types of inventory: Raw materials, work in progress, finished goods, tools and supplies and goods in transit.
  • Decisions must be made about amount and location of inventory, as well as delivery times.
  • Techniques like Economic Order Quantity (EOQ) and Reorder Point (ROP) help determine optimal orders sizes and when to place them.
  • Safety stock helps to prevent shortages and avoid stock out risks.

MRP (Material Requirements Planning)

  • Techniques to estimate requirements for materials, parts, subassemblies, components, etc. for production.
  • Involves planning based on end-item (final product) requirements.
  • Works best with stable production environments.
  • Requires accurate data – errors in data or forecasts lead to inefficiencies.

Lean Operations

  • A flexible operational system that uses fewer resources, achieving quick turnover, and lower costs, while offering high quality.
  • Principles include identifying customer value, focus on processes to deliver value, reducing waste, and a pull system for making output as the demand arises.
  • Lean systems reduce waste, making operations more efficient than traditional methods.

Logistics

  • Logistics manages the flow of materials, service, cash and information. This includes incoming and outgoings shipments alongside traffic management, using technology like radio frequency identification (RFID) to improve tracking and efficiency.
  • Third-party logistics (3PL) provides logistics services to companies who don't want to manage their own supply chains.

Other General Points

  • It's important to consider cost, accuracy, data availability, and forecast horizon when choosing a forecasting technique.
  • Supplier management is critical for effective supply chain integration. This includes choosing, auditing, certifying, and developing relationships with suppliers.

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Description

Explore the fundamental concepts of operations management, sustainability, and the intricacies of logistics and supply chain. Understand how various services including financial, marketing, accounting, and information services interact within a business. This quiz provides insights into the definitions of goods and services and their roles in the business environment.

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