- Models and Usability
General Systems Model :
- Standard Work
- Decisions and the Environment
- Environment
- Stage and Step System Approach
Model :
Is a simplification of something that represents a number of objects or activities (entity):
Model Types:
- Physical Models: representation of three-dimensional form,
- Model Narrative: representation orally or in writing,
- Model Graphs: representation in the form of lines, symbols / shapes,
- Mathematical Models: The description in the form of mathematical formulas or equations.
Purpose Model
- Facilitate understanding: Because of the simplification problem
- Facilitated communication: It can communicate information quickly and accurately,
- Estimating future: mathematical models, although not 100% accurate, can be used to make predictions
General System Model
- Physical systems: material flow, personnel flow, the flow engine, the flow of money
- Conceptual System: The system is open loop, closed loop systems, management control, information processing, the dimensions of information (relevance, accuracy, timeliness, completeness), the standard, critical success factors, the decision flow.
Objectives and Performance Standards
Meet customer needs : Achieve annual sales volume of at least 25 million dollars, Maintain 20% market share.
Produce return on investment (ROI) for the owners: pay dividends to shareholders every quarter, Maintaining the company's stock price above 85 dollars per share.
Environmental
- Placing the General System Model In Context
- Problem Solving,
- Decision Making and Problem Solving,
- The Elements of Problem Solving Process: Problems, Standards (desired condition), Information (current state), Alternative Solution, Problem, Solving Problems and Solutions Manager,
- Problems vs. Symptoms
- Structure Issues: Structured Problem, Not Structured and Semi-Structured
Stage and Step System Approach
Preparation of Business: Looking to the company as a system, Recognizing environmental systems, subsystems Identify company.
Definition of Business: Moving from the level of the system into subsystems, analyze the system in a particular order (described on back)
Business Solution: To identify alternative solutions, evaluate alternative solutions, Selecting the best solution (Analysis, Assessment and Bargain), Implement best solution, make a follow up to ensure that it is an effective solution.
Analysis System Parts
- Evaluating Standards: Officially, Realistic, Understood and Measured Comparing with Standard Output System.
- Management Evaluation.
- Evaluating Information Processing.
- Evaluating Input and Input Resources.
- evaluate the Transformation Process.
- Evaluating Output Resources
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