Logistics & Supply Chain Management ( all inclusive)

FHNW BIT Logistic & supply chain management

FHNW BIT Logistic & supply chain management


C. M.
This flashcard set delves into the intricate world of logistics and supply chain management, tailored for university-level learners. It explores key concepts like sustainability, recycling management, and the strategic scope of waste management, emphasizing the importance of customer, supplier, and business relationships. The flashcards cover methods and instruments of sustainable supply chain management, including risk management techniques and the evaluation of product carbon footprints. Ideal for students and professionals aiming to optimize supply chains and reduce environmental impact, this set provides a comprehensive overview of the processes and networks that drive efficient production and service delivery.
Flashcards
461
Students
5
Language
English
Category
Micro-Economics
Level
University
Created / Updated
17.11.2020 / 03.04.2025

Flashcards

What types of sales planning processes are there? And how do they look like considering demand and time

“Sales (Demand) Planning” determines during which periods which quantities of a given product range should be available for delivery.

 

There are four types of demand profiles differentiated during Sales Planning:

Compare the simple and the moving average method of Forecasting

Simple average

In this method, all demand quantities of the historical series are taken into account by forming the arithmetic mean from these values.

 

Moving (or rolling) average

This method is characterized by the rolling shift of the considered period, i.e. as soon as a new demand value is present, the oldest value is replaced.

 

 

Exercise Forecasting- Moving Average
 

What sales of machines are expected for 2019? What are the weaknesses of the moving average method?

 


Starting position and tasks 

A specialized machinery company has sold the following number of machines on the market during the past six years (see table). At the end of 2018, a forecast for the year 2019 is to be prepared.

a) Using the moving average method, and considering the last four years of sales, determine which sales are to be expected for the year 2019. b) What are the weaknesses of the moving average method?

[Year][Number of machines sold]

[2013][3]

[2014][7]

[2015][14]

[2016][9]

[2017][3]

[2018][2]

[2019][?]

A:

N = number of periods considered = 4

Yi = Demand value of the period i

i= t - N +1

1/N *

 

(14 +9 +3 + 2) / 4 = 7

2019 = 7 machines sold

 

B:

It is the wrong method for that scenario. Once you start seing trending demand pattern you need a different method. Moving average works well when you have a more or less consistent demand.

What is Forecasting base on First-order exponential smoothing?

First-order exponential smoothing is a practice-relevant special case of averaging and is used to assign exponentially decreasing weights over time. This method performs an exponential weighting of the forecast errors to extrapolate expected demand values in the future

 

 

 

Exercise Forecasting – First-Order Exponential Smoothing
 

Which sales of cars is expected for period 6? What is the forecast error in period 5?

 

The analyst of an automobile manufacturer has been provided the table shown in the next slide. The actual sales data have been entered for five periods.

  1. Copy the table shown into a spreadsheet, for example, into Excel.
  2.  Determine the forecast values for periods 2 to 6 using first-order exponential smoothing. The smoothing factor, α, is 0.3.
  3. Determine the forecast error for periods 2 to 5. The forecast error is the difference between the actual sales value and the forecasted sales value divided by actual real sales value. The resulting forecast error is in percent.
  4. Enter the calculated values in the corresponding empty fields of the table.

[Period][act. Sales cars][forecast sales cars][forecast error]

[1][70'000][70'000][0.00%]

[2][80'000][            ][           ]

[3][78'000][            ][           ]

[4][82'000][            ][           ]

[5][84'000][            ][           ]

[6][            ][            ][           ]

 

B,C,D:

Function to apply =

 

New forecast = 0.3* last actual value + (1 - 0.3)* last forecast value

[Period][act. Sales cars][forecast sales cars][forecast error]

 

[1][70'000][70'000][0.00%]

[2][80'000][70'000 ][12.5% ]

[3][78'000][ 73'000][ 6.4%]

[4][82'000][74'500 ][ 9.1%]

[5][84'000][ 76'750][ 8.6%]

[6][            ][ 78'925][          ]

Define and sketch a procedure for a Lot size calculation. Define the most common method related to the categories.

"The lot-size calculation pursues the goal of determining economically optimal lot sizes and finding a compromise between higher stocks for large lots and higher set-up costs for small lots". (Schuh & Schmidt, 2014)

Fundamentally, lot size calculation methods can be divided into four

categories: 

  • Static methods with cost optimization
  • dynamic methods with cost optimization
  • static methods without cost optimization  (as soon as inventory drops below e.g. 100 I order more)
  • dynamic methods without cost optimization ( how well do you understand your forecast)

 

Static = fixed order quantity. Means if I drop below 100 I order 500.

Dynamic = difference between net and gross. If I drop below 100 I order 400 to be in stock for 500.

Cost optimization means that you look at inventory costs. Without cost optimization you do not look at that.

 

Which procedure for lot size calculation would you use for an "A part and X good", "C part and X good" and "B part and Z good"? Rather one with cost optimization or without? Rather dynamic or static?

  • A part and X good
    • Static with cost optimization
  • C part and X good
    • Static with cost optimization
  • B part and Z good
    • No method; based on experience you order more or less

 

What is the Economic Order Quantity (EOQ) method from Harris-Andler?

The most well-known of the static methods for lot size calculation is the Harris-Andler method (also called "Economic Order Quantity” (EOQ) Model). It offers a simple, practical way to calculate variable lot sizes depending on the quantitative requirement of the object to be manufactured and the corresponding storage and in-house production costs ».

The Harris-Andler method is based upon the following assumptions:

  • The demand is constant.
  • Ordered in constant time intervals, exactly once per period.
  • The order arrives immediately and is entered into stock.
  • Fixed costs are independent of quantity.
  • The storage cost rate is constant.
  • No backlogs occur.

 

 

Exercise for Lot Size Calculation Procedure - EOQ

 

What is the optimal order quantity for wooden boards?

 

Starting position:

 Schreiner Ltd. required 10'000 wooden boards last year. For ordering and transporting the wooden boards, Schreiner Ltd. incurs costs of CHF 1,000 per order. The storage cost rate is 10% per board. The value of a single wooden board is CHF 50.

Determine the optimal order quantity for Schreiner Ltd. using the Harris-Andler method.

square root ((2 * B * KR)/ (kL * T)) = xopt

Xopt= optimal size

B = total quantitative during planning period = 10'000

KR= setup cost( costs per order) = 1000

KL= storage cost per unit  and period (unit costs = 50 X storage cost rate= 10%)

T = period length ( always 1 in this module)

square root((2*10000*1000)/((50*0.1)*1)) = 2000

 

 

Exercise for Lot Size Calculation Procedure - EOQ

 

What is the optimum order quantity for saw blades? How long is a corresponding saw blade in stock on average (in number of months and days)?

 

Starting position:

Schreiner Ltd. consumes many saw blades in the workshop. Because Schreiner Ltd. is a good customer of the wholesaler, the carpenter receives a discount on the list price.

  1. Based on the following information, calculate the purchase price for the saw blades and the optimal order quantity using the Harris-Andler formula: –annual consumption: 6000 units –wholesale price per saw blade: CHF 2 –discount: 25% –cost of storage: 15% –cost per procurement: CHF 180

 

square root((2*B*KR)/(kL*T))= xopt

B = 6'000

KR=  180

KL= storage cost per unit  and period unit costs = 2

Discount = 25%

 storage cost rate= 15%

T = 1

square root((2*6000*180)/((2*0.75)*0.15)*1) = 3098.39

Exercise for Lot Size Calculation Procedure - EOQ

Starting position:

Mr. Schnarwiler and Mr. Bergin are employees of Bosshoss AG. Mr. Schnarwiler is the warehouse manager and Mr. Bergin is head of the purchasing department. Both are involved in a dispute. Mr. Bergin loudly states that he wants to order the annual requirement of 500 pieces of the article "Hoss-1A" all at once. In the end, the procurement costs amount to CHF 50 per delivery regardless of the quantity ordered. Mr. Schnarwiler, on the other hand, thinks that you should just order as much as you need right now. That's something like four orders a year. Because the storage costs per year in percent of the average stock value, assessed at the purchase price, amount to 15% with a purchase price of CHF 70 per unit.

  1. What exactly are they actually arguing about? Who's right?

Mr. Schnarwiler and Mr. Bergin want to know it now! Because you do not know the Harris-Andler formula, you want to calculate (model) the matter using an Excel spreadsheet. You want to know which order and storage costs are incurred each time, when you make between 1 and 12 orders per year.

  1. Create an Excel file and save it under the name «Optimum order quantity». Create a worksheet named "Article Hoss-1A".
  2.  Now calculate the following values in columns with the headline for 1 to 12 orders per year:
  3. Order quantity, procurement cost, average inventory, storage costs, sum of purchase and storage costs
  4. Create a scatter diagram, and determine the optimal order quantity on it.

Hints: –Not all values are required to create the chart. Use Multiple Selection to highlight "Reference Costs", "Warehousing Costs", and "Sum of Reference and Inventory Costs" before creating the chart. –The y-axis should be the cost and the x-axis should be the number of orders.

 

  1. For which number of annual orders is the total cost lowest? What is the total cost?
  2. Determine the optimal order quantity using the harris-andler formul:

 –Annual requirement: 500 pieces

–Cost per order process: CHF 50

–Storage cost rate per year as a percentage of the average stock value assessed at the purchase price: 15%

–Unit Cost: CHF 70

What are forecasting methods and why are they relevant in the business context?

There is the simple average forecast and the moving average. It is for example used in the sales planning process of the upcoming quarter or year to determine how much sales = stock they need to keep up with demand.

How does the smoothing factor affect the forecasting error in the forecasting process in first-order exponential smoothing?

First-order exponential smoothing is a practice-relevant case of averaging. It is used to assign exponentially decreasing weights over time. So spikes are not as high. This method performs an exponential weighting on the forecast errors.

 

Result is the next forecast period

You calculate

"smoothing parameter" * "demand period" + (1 - "smoothing parameter")*"Forecast period"

How do the simple and the moving average calculation differ from on another?

Simple average = take all demand quantities and form arithmetic from these values

moving average = take only newest quantities. If there is a new one drop the oldest value in the calculation.

What are lot sizes and why are they differentiated?

Lot sizes are calculations to determine the optimal lot sizes and finding a compromise between higher stocks for large lots and higher set-up costs for small lots.
They are two general methods. One with cost optimization and one without.

The method with cost optimization is parted in two sub methods. 1. static method of Harris-Andler and the other one is a dynamic method where sliding economic lot sizes are considered with different methods.

 

In the lot size calculation which is not optimized for costs you also a statistic- and a dynamic method. The statistic method is based on discrete lot size, fixed lot size, and refill to the maximum stock level. The dynamic method is focused on the period lot size.

How are lot sizes calculated?

Cost optimization

  • Static method
    • Harris-Andler method
  • Dynamic method
    • Silver meal method
    • Groff lot size method
    • Wagner-within method
    • Piece-period balancing method

Without cost optimization

  • Statistic method
    • Discrete lot size
    • Fixed lot size
    • Refill to maximum
  • Dynamic method
    • Period lot size

What can having an Inventory mean?

First sign of inneficciency

What is a supply chain and which current developments change the supply chain processes?

Supply Chain is a complex system of people, processes, and technologies engineered to deliver value to a customer for the lowest total cost.

There are multiple new items changing the supply chain process due to new technology.

  • 3D printing
  • Robotics automation
  • Industry 4.0, complete networking between machines, manufactured services or offer and the environment to people.
  • Working and fighting machines. E.g. drones used for transport

 

 

Which influencing factors also affect the business processes and the results of a company?

 

Goods and services, payment and data

Customer requirements, costs and supplier network, stock levels, manufacturing, transport cpacities.

 

Different technologies can influence.

Robots in warehousing or home for elderly, industry 4.0 flexible and networked manufacturing, fully-networked railway infrastructure, drones

How can the success of a company be measured?

 

By the efficiency and effectiveness of their work.

What are the elements of a supply chain?

Typical elements are

  • Supply chain strategies
  • Supply chain processes with plan of source make deliver.
  • Information systems
  • Organisation
  • Performance indicators of customer service, cost , flexibility, assets

What are the approaches for looking at a supply chain?`

 

  • Supplier-centric approach: supply chain as a network of suppliers producing goods
  • Customer-centric approach: a supply chain consists of all the levels required (direct or indirect) to fulfil a customer request
  • Systematic coordination between all required parties: combine supplier-centric & customer-centric
  • Demand-side approach: demand chain focuses on market demand towards supplier
  • Organization-related consideration of the supply chain: supply chain as a series of organizational units both within a company as well in other companies.
  • Single-stage supply chain: reflects only direct relationships between suppliers and customers
  • Multi-stage supply chain: in extreme cases, it maps all stages, from raw material through the disposal or recycling of end-of-life- products. Complexity increases, no chance to monitor all stages, limit themself on two levels
  • Market-driven supply chain: market decisions determine the nature of the supply chain. Investment, strategies, cooperation, market decisions
  • Functional supply chain: analysis according to the main activity of the operational functional areas. Purchasing, manufacturing, movement, warehousing, sales

According to which strategies can a company align itself with regard to the supply chain?

  • Product or target group
  • Strategy resp. Requirement
  • Flow perspective

 executed by definition, concepts and strategies

What are the typical categories of supply chains?

Product or target group

  • Product-centric, focus on individual products (volume)
  • Customer centric, focus on special target groups

Strategy resp. Requirement category

  • Direct, open competition, competitive offers and tenders
  • Trade of bulk goods, focus on independent trade
  • Lean supply chains and system integration
  • Competing constellations of interlinked companies
  • Interlinked network supply between competitors
  • Capital goods control the offering, market leadership is the goal
  • Partnerships to the benefit of the customer
  • Virtual offering- no production only customer (man. Outsourced)

Flow perspective category

  • Distribution, physical progression of a product
  • Material flow, organization that purchase, convert and sell materials
  • Workflow, pre-defined sequence of activities within an organization
  • Information flow, flow of information between integrated partners.

What connects and distinguishes supply chain management from a business model?

The business model is how the company makes money. Are you a B2B company or a B2C? Is your product digital or physical? All these needs to be answered and many more before moving onto SCM

 

The supply chain model is there to make the product available to your customer and ensure profitability on a landed or delivered cost perspective

What does one understand as an e-business? What are the goals of e-business?

E-business refers to the use of internet and digital technologies for business processes. The goal of e-business is

  • Avoidance of repeated capturing of the same data
  • The acceleration of communication between business partners regarding the procurement of goods, delivery and payment transactions
  • Competitive advantage through faster response to events both in operations and in the marketplace
  • Closer involvement of suppliers
  • The reduction of inventory
  • Intensifying customer service
  • Integration of value-creation partners

Which areas of activities does a company have to deal with?

  • Procurement side: value contribution of the suppliers to the products and services of the own company
  • In-house: the value contribution made by the company's own products and services
  • Sales side: refers to the value that arises through and in the interaction with the customers
  • Business models: deals with the integration of the different strategic directions and business models from suppliers, the own company and customers
  • Processes: focuses on the overarching collaboration between suppliers, your own company and customers
  • Sustainability: focuses on the long-term success of the company, taking into account economics, ecology and social issues

What is the SCOR model? Which process areas are central to the model?

The four quadrants of the procurement portfolio deliver the SCOR model

SCOR = supply chain operation reference model

At its core, the SCOR model is an ideal, industrywide approach in which the processes within the supply chain are consistently described by the business partners. The SCOR model describes four levels. Each level below shows a detailed description of the processes at the higher level.

  1.  Top level
  2. Configuration level
  3. Process element level
  4. Implementation level

What is meant by procurement management?

Procurement management (purchasing) can be divided into strategic and operational areas. Where the strategic part focuses on effectiveness: tracking the right procurement goals , and operational focus on efficiency: achieve procurement goal with little effort

What are the goals of a company with procurement management in the short and long term?

Long-term in strategic procurement is

  • Optimization of the supplier relationship
  • Ensure security of supply for the company
  • Increase competitiveness through procurement efficiency
  • Operational

 

Short term to supply all customer with the wished product.

What is a procurement portfolio? What is analysed with the help of a procurement portfolio?

A procurement portfolio is a analytical tool in procurement management where products and suppliers are assigned to four quadrants based on effect on the financial results ( the higher the respective volume the greater the influence of the product on the financial result) and supply risk

What is meant by inventory management? What is being examined with ABC and XYZ analyses?

Inventory management of product component is subject so specific rules. The required components and spare parts should always be available on time and place in quality and quantity. Missing components and spare parts bring production process to a standstill.

 

Goal of ABC and XYZ analyses is the management of components and spare parts.

  • A parts: capital intensive, high risk of standstill
  • B parts: standard pards
  • C parts: small parts and consumable, low value, large quantity
  • X goods: good forecast accuracy, small parts, production-synchronous control
  • Y goods: average forecast accuracy, stock procurement
  • Z goods: safety stock required, neither production-synchronous nor buffer storage

What is supplier management resp. Supplier Relationship Management?

Supplier Relationship Management [...] encompasses all activities related to supplier selection, supplier development and supplier integration. Supplier management is fed by the operational and strategic design of procurement processes. The overarching goals of supplier relationship management lie in optimizing supplier relationships, reducing processing costs, lowering purchase prices, improving product quality and continuously monitoring procurement activities.

What is e-procurement and what are the basic types?

E-Procurement is supporting the relationships and processes of a company to its suppliers through networked information technology. Categorised in direct and indirect goods

 

Basic types are the

  • Buy-side-system (buyer e-procurement system
  • Sell-side system (seller e-procurement system e.g. online shop
  • marketplaces

What is EDI and how does it work? What are the advantages and disadvantages of EDI?

Electronic Data Interchange (EDI) is the asynchronous electronic exchange of structured data between the application systems of business partners, free from media discontinuity and human intervention

Advantages

  • Avoid multiple data entry
  • Reducing number of manual activities
  • Reduction of administrative measures
  • Acceleration of the communication process

Disadvantages

  • High acquisition costs
  • More elaborate comparison of master data
  • For EDI across platforms of EDI intermediaries:
    • Low transparency over fees
    • Violation of access rights

What are central questions for the area of activity in the company-internal supply chain

The area of activity "company-internal supply chain" focuses on the value contribution to be made by a company to its own products and services. Central questions are:

  • How should the company strategically position itself within the networked value chain?
  • What value contribution can or should a company make on its own?
  • How does one's own company have to develop in terms of digitalization and innovation?
  • Which areas of the company-internal supply chain are productively and economically aligned to the value creation of the business partners?
  • To what extent can internal processes be standardized and automated by means of digitalization?
  • How can internal logistics be best geared to the manufacture of products or the provision of services?

Companies are under pressure to accelerate. They must be able to increasingly quickly plan and steer their internal supply chain. What do you must therefore understand?

  • How, strategically, the production of products and services is classified
  • How, generically, the processes for creating products and services are described
  • How the different products and services determine production planning and control

What is the definition of operations management?

«Operations Management is the planning and operation of the order fulfillment process (Operations Process) for the creation of goods and services. The order fulfillment process extends from product development through manufacturing to the delivery of the product to the customer.» (Grabner, 2017) "Operations" is one of the three core processes alongside procurement marketing and sales marketing.

 

 

What are the three core processes in operations management?

Tasks in Procurement

  • identify suitable suppliers
  • develop long-term partnerships

Tasks in Sales Marketing

  • capture customer needs
  • win orders that are feasible for the company
  • build long-term customer relationships
  • Provide Sales Plans, Basis for Production Planning

Tasks in Operations and Processes

  • align product development and product concepts with customer expectations
  • production of goods or services for customers
  • deliver the product to the customer on time and in the expected quality

Compare Operations Management to Daily operations

Operations Management:

  • Includes operational, tactical and strategic levels
  • To ensure economically viable operation in the long term
  • Further develop existing processes and structures
  • Operational performance

Daily Operations

  • Day-to-day decision-making and trading according to strategic guidelines
  • Convert customer orders into internal orders
  • Execute plans and monitor performance

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