L_SMS L-Supply systems management

Integrated material and information flows of the supply systems.

Testing-chapt.1-6

Key words:

Logistic transformation, transformation process, value-creating chain, logistics chain, integration of material, information and energy flows, system, system structure
Chapter objectives:

  • Explain the contribution of logistics to creating values
  • Clarify logistics transformation in supply chains
  • Emphasize system and process approach to supply chains

Time required to study the chapter: 8 hours
Interpretation:

Material movement - an essential part of the reproduction process
The process of constant restoring the production is the material basis of reproduction. This process raises the coínstant need for transport and storage and associated loading, unloading and transhipment of raw materials, semi-finished products and final products. Production, characterized by the labor shift, takes place in different places and usually other than consumption and at times other than consumption. Last but not least, the production rhythm is different from consumers’ requirements. Smooth processes in production and entire market mechanism require so that labor, resources and objects (both work and consumer) are in the required quantity, assortment and quality, - ecologically and economically optimally - in a determined time and at the desired location.
The production, distribution, circulation and consumption of production means and consumed objects are realized through transformation processes in which the structure, shape, position and time of substances (masses, materials), information and energy are transformed, whereby the logistics transformation consists in the time-space transformation of materials performed by transportation, handling and storage of material.
These transformations take place in the process chains that interconnect the sources locations of with places of consumption and the entire cycle system of the tangible and intangible goods, which forms a closed circle, can be represented by the model in Figure 1-1.
 
 
Fig. 1- 1: Model of materials circle and related information

 
Transformation of technological or logistics character of material objects is realized in the individual elements of process chains. During these transformations, their state changes occur. In processes of a technological nature, shape transformations (for example, in forming or machining) or structures of material objects (eg., in chemical reactions) occur. In logistics transformation processes, time and position or orientation of objects in space change.
 
It is clear that the movement of materials is associated with a complicated information flow and it cannot be realized without energy flow. This fact can be captured by the cybernetic structural model which is a generally conceived logistics system in this respect - see Fig. 1- 2.
 
 
 
Fig. 1-2: Cybernetic structural model of the logistics system
 
System approach and integrated conception of material and information flows
The term system represents a purposeful defined set of elements and set of relationships (relations) between them which together determine the properties, behavior and functions of the system as a whole. Mathematically can be expressed as:
            System S = (A, R),
            where         A = (a1, a2, a3 ... an) - set of elements
                           R = (r1, r2, r3, ... rm) - is a set of relationships between them
 
The structure of the system is a set of system elements and a set of relationships between them.
Thus, the task of logistics is to collect and process the information flow from the sales market, transform the information content into the purchasing market side and integrate it with the flow of material objects (raw materials, semi-finished products and final products) and optimize these integrated flows.
 

Study materials:


Basic literature:
JEŘÁBEK, Karel. Logistika: study support for combined study. 1. ed. České Budějovice: Institute of Technology and Business in České Budějovice, 2012. 96p. ISBN 978-80-7468-016-8.
TOUŠEK, R. Management dopravy. České Budějovice: Jihočeská univerzita v Českých Budějovicích, 2009. ISBN 978-80-7394-172-7.
FIALA, P. Dynamické dodavatelské sítě. Prague: Professional Publishing, 2009. ISBN 978-80-7431-023-2.

Recommended study materials:
SCHULTE, CH.: Logistika. Prague, Victoria publishing, 1994. ISBN 80-85605-87-2.
 

Questions and tasks:

  1. The material basis for reproduction is:
    1. process of continuous restoring the production
    2. a set of system elements and a set of links between them
    3. purposeful defined set of elements
  2. Smooth processes in production and entire market mechanism require so that labor, resources and objects (both work and consumer) are:
    1. mathematically expressed
    2. in the required quantity, assortment and quality, - ecologically and economically optimally - in a determined time and at the desired location
    3. the transformation of the technological or logistics nature of the material objects
  3. The production, distribution, circulation and consumption of production means and consumed objects are realized through transformation processes in which:
    1. model of materials circle and related information occur
    2. process chains occur
    3. the structure, shape, position and time of substances (masses, materials), information and energy are transformed
  4. The model of materials circle and related information does not include:
    1. consumption
    2. inter-warehouse
    3. tram
  5. The term system represents a purposeful defined set of elements and set of relationships (relations) between them which together determine the properties, behavior and functions of the system as a whole. Mathematically can be expressed as:
    1. S = (A, R)
    2. S = (m, g)
    3. S = (v1, vi….vj)

Key to solve the questions

  1. a
  2. b
  3. c
  4. c
  5. a
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