Systems Approach - English

@. Tema: The systems Approach.

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SYSTEMS APPROACHLuis Álvarez Vargas

Heber Chávez Ch.

Nick Cabana

Ricardo Jimenez

Universidad José Carlos Mariátegui

Escuela Universitaria de Ing. Sistemas e Informática

2013

RESUME

In this chapter we first describe the many aspects of the systems approach and how they relate to the general theory ICD systems (TGS). The latter provides the theoretical background to the first, dealing with applications.

@. Tema: The systems Approach. 2

THE DIFFERENT ASPECTS OF SYSTEMS APPROACH

The systems approach can be described as:

1. A design methodology.

2. A conceptual framework for joint work.

3. A new class of scientific method.

4. A theory of organizations.

5. Address by systems.

6. A method related to systems engineering, operations research, cost efficiency, etc...

7. General theory of applied systems.


THE SYSTEMS APPROACH:

The systems approach are the activities of completing a general objective and rationale for each of the subsystems, performance measures and standards in terms of the overall objective, the complete set of subsystems and their plans for a specific problem. The process of transforming an input (problem) into a product (planned actions) requires the creation of a methodology organized into three major subsystems.

Formulation of the problema.Identification and desing solutionsControl results.


NEED THE SYSTEMS APPROACH:

The common argument to justify the necessity of the systems approach is to be noted that at present many problems faced in the direction of increasingly complex systems. This complexity is due to the elements or parts of the system under study are closely related because the system itself interacts with the environment and with other systems

An example is the transport, the study takes into account not only equipment, infrastructure, application and operation, but also variables as diverse as technology, pollution, regulations, safety, redevelopment and land use, financial feasibility, etc.


TROUBLESHOOTING PROCESS USING THE SYSTEMS APPROACH:

Subsystem Problem Formulation: Its function is to identify the challenges for present and foreseeable future, in addition to explaining the reason for its existence and for its understanding is divided as follows:

Approach to the problem. Research of reality. Formulation desired. Assessment and diagnosis.


Subsystem ID and Design Solutions:

Its purpose is to raise and judge the possible forms of intervention, and the development of programs, budgets and designs required to move to the implementation phase, this item is divided into:

Generation and evaluation of alternatives.Formulation of strategic bases.Developing the solution.


Control Subsystem Result:

All program strategy or plan is subject to adjustments or restatements to detect errors, omissions, changes in the environment, changes in the structure of values, etc.. This point is divided as follows:

Planning control.Evaluation of results and adaptation.


TERMINOLOGY PRACTICE

American National Standards Institute (ANSI): An american organization that establishes of different types for use by the government and businesses.

Benchmark Test: Sample job runs performed by vendors to validate proposals of equipment performance.

Compatibility: Conformity to standards for imput, output, and programming languajes.

Hierarchy Plus Input, Process, Output (HIPO): A desing and documentacion technique that supplements flowcharts and decisión tables.

Immediate Cut-Over: A means of implementing a new system by complete, immediate cut-over from old to new.

International Organization for Standardization (ISO): An intrnational group that establishes standards of different types for use by governments and businesses.

Maintainability: The ability to be repaired quickly and economically when a failure occurs.


continuous Modularity: The ability to be adapted to large configurations by

interchanging units or by adding units to the basic system. Parallel Cut-Over: maintenance of an old system in its entirety until

the new system is checked out by using real data. Phased Cut-Over: implementation of a new system, one subsystem at

a time, with each subsystem being debugged before proceeding to the next Phased cut –over takes a longer period of time tan inmediate cut-over.

Reliability: The ability always to function efficiently without failure. Systems Analysis: The process of studying an existing system for the

purpose of improving or replacing it.


continuous

Systems Analyst : The person who analyzes and designs computer systems.

Systems Approach: A systematic step-by-step process that is followed in the analysis and design of a computer system within a company.

Systems Design: The process of identifying and evaluating posible solutions to a systems problem, and then selecting the best solution.

@. Tema: The systems Approach.

Aproach.

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VOCABULARY:


CHECK UP:


A is the transfer from an old system to a new one.

The is the person responsible for analyzing the old computer system as well as designing the new one.


CUT-OVER

SYSTEMS ANALYST

A computer that functions well without failure demonstrates.

is the international organization for standardization.

After the systems analysis is completed, the is begun.


RELIABILITY

ISO

SYSTEMS DESIGN

In the order to verify equipment performance, the vendor will run a .

When a company maintains its old cumputer system as well as its new one in order to check the new one with real data, it has implemented a .


BENCHMARK TEST

PARALLEL CUT-OVER

Studying an existing system in order to improve it is called a .

Occurs when a computer can be repaired efficiently and economically.

The American Organization responsable for the standardization of flowcharts is the .


SYSTEMS ANALYST

MAINTAINABILITY

ANSI

THANK THANK

YOU YOU

GUYSGUYS


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