data link layer의 상위 layer에대한 설명이 나오며 IEEE 802.3에서 802.5까지는 각각 CSMA/CD, token bus, token ring을 설명하고 있습니다.
② CSMA/CD(Carrier Sense Multiple Access with Collision Detection) :-하나의 전송 매개체를 여러명이 거의 동시에 사용하기 위한 방법에는 여러가지가 있는데 그중에 LAN에서 사용하는 MAC(Media Ac
다차원 자료의 시각화를 위한 여러 가지 고난도의 방법들이 개발되고 있다.
- Exploratory Data Analysis(EDA) : 탐색적 데이터 분석(EDA)은 사전에 설정된 가정이나 모형에 의존하지 않고 데이터를 탐색하여 흥미 있는 패턴들을 밝히려고 시도한다. 시각과 직관을 위해 데이터의 그래픽 표현이 흔히 사용된다.
Data minig tools
- Use a variety of techniques to find patterns and
relationship in large information and infer rules from them.
Detect customer's buying behavior and predict future behavior
by identifying affinities among
customer's choices of products
and services.
SENECA(Analyzed Method)
Product consistency tool
PVR(Analyzed Method)
Process Variation tool
Time-seri
Change of conductivity being
normal state and gas detecting in sno2 grain boundary
Amount of desorption and absorption of oxide and free electron
can control sensor sensitivity
Electrode and the electrolyte solution while maintaining a constant current from the direct oxidation and reduction when measuring current to detect the gas.
Cause ionization of the electrolyte solution, the
5.3 Setting Architecture
디자인적인 환경설정과 정보 수집을 위한 환경설정을 지원한다.
5.3.1 Setting Interface
사용자가 세팅설정을 쉽게 할 수 있도록 보여준다.
5.3.2 Icon Change
사용자가 아이콘체인지를 위한 서비스를 요청할 때 사용한다.
5.3.3 Background Change
사용자가 배경화면을 바꾸는 서비스를 요
data, we might loss some additional information which can be obtained from WTI oil price data because what we want to measure is exchange rate change related to USD.
Although the empirical result cannot support our theoretical expectation, we did not give up the expectation because we do know the insufficiency of the data which is used in regression analysis. If we have enough data, we might fi
In Korea, it is started with TU Media. 4 characteristics of satellite are as below.
New Media - Overcame the limitations time and place of existing broadcasters
Mobility - Can be connected anywhere through portable devices
Personal - Individual media
Multimedia - Can freely use the contents through voice, data and video and can be connected freely in cell phones and wireless Internet
change before and after Asian financial crisis for us to experience. Therefore, after we divided the data into two parts; before and after Asian financial crisis, we examined how the variables affected apartment price.
2. Introduction
1) Motivation
There is a famous economic idiom among economists in Korea that is ‘No Failure in Real Estate Market,’ which was coined from 1970s. However,
data in the year 2000, it was ranked the 3rd in the world traveling market with the sales of 6 billion dollars. In addition, in the year 1998's Fortune Magazine, it was selected as 29th of the 100 firms with most convenient working conditions.
Besides the facts that have been mentioned about this firm, it has an important history of change which we can learn from. We focused on the changing pr
change small pieces of data behind the scene so that an entire Web page does not have to be reloaded each time the user requests a change.
-Ex) If you click North on a Google map site, the server downloads just that part of the application that changes with no wait for an entirely new map.
2)Management and Governance
Important questions about IT governance are:
-Should departmen