Introduction

Optimization - 시험

  • Define manufacturing and describe the technical and economic consideration : A kind of optimization
  • Relationship among product design(functionality & costs) and engineering(processes) and factors(materials)
  • Important trends in modern manufacturing and minimizing of production costs(optimization)

Manufacturing(production)

  • The process of converting raw materials into products
    • Design of desires
    • Realization of goods
    • Through various production methods
  • Raw material became a useful product : Maximizing Added value

Product Design & Concurrent Engineering

  • Product design(제품 설계)
    • 70~80%의 개발 비용
    • 제품에 대한 기능 및 성능의 이해 필요
    • CAD, CAM, CIM을 통해 설계와 제작이 순차적으로 이루어짐
    • 하지만 현대는 즉각적으로 이뤄짐 : 동시 공학
  • Concurrent engineering(동시 공학)
    • 설계 및 제조를 통합하는 즉각적이고 체계적인 접근
    • 제품의 수명주기와 관련된 모든 요소 최적화
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결측값 X

read.table

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setwd("/Users/zerohertz")
text=read.table('Data.txt',header=T)

Data 취사 선택

indexing - []

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정규성 검정 function

shapiro.test(), qqnorm(), qqline()

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> library(MASS)
> attach(Cars93)
> shapiro.test(Price)

Shapiro-Wilk normality test

data: Price
W = 0.88051, p-value = 4.235e-07

> str(Price)
num [1:93] 15.9 33.9 29.1 37.7 30 15.7 20.8 23.7 26.3 34.7 ...
> qqnorm(Price)
> qqline(Price)
> qqnorm(log(Price))
> qqline(log(Price))
> shapiro.test(log(Price))

Shapiro-Wilk normality test

data: log(Price)
W = 0.9841, p-value = 0.32
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Reference
Detection


$$을 이용하여 수식 표현

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> $f(x)=x^2$

> $$
> f(x)=x^2
> $$

$f(x)=x^2$

$$
f(x)=x^2
$$

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