line selling efforts were conducted by magazine sales people who didn’t really understand how the new medium worked. Thinking of banner ads in the same way as they thought of a 30-second television spot or a print ad in a magazine, they sought to base their prices on the number of people who would see an ad-what in the trade is called ”exposure- based cost-per-thousand pricing .” (The short
conducted its extension program to the world market.
2. iPod & iTune
2.1 Product
iPod is a brand of portable media players designed and marketed by Apple. As of 2008, the current product line-up includes the hard drive-based iPod classic, the touch screen iPod touch, the video-capable iPod nano and the screenless iPod shuffle. Former products include the compact iPod mini and the spin-of
conducted blind taste tests. And the company tried to demonstrate that consumers actually preferred Pepsi to Coke. After its sales shot up in Dallas, Pepsi rolled out the campaign nationwide.
3) The best way to achieve higher market share is good at advertising and marketing campaign.
“Pepsi Challenge” is one of good sample of successful marketing campaign. Two companies launched a lot o
1. Pump에서의 Cavitation (공동현상) 에 대하여 기술하고 이로 생길 수 있는 문제점과 그 방지책에 대해 논하시오
- Cavitation이란
유체가 넓은 유로에서 좁을 곳으로 고속 유입하거나 벽면의 요철, 만곡부 등으로 흐름이 직선적이지 못할 때 유체는 저압이 되고 포화증기압보다 낮아지면 기화되어 기포가
1. LCD(Liquid Crystal Display)의 정의
인가전압에 따른 액정의 투과도의 변화를 이용하여 각종 장치에서 발생되는 여러 가지 전기적인 정보를 시각정보로 변화시켜 전달하는 전자 소자이다. CRT와는 달리 자기발광성이 없어 후광이 필요하지만 동작 전압이 낮아 소비 전력이 적고, 휴대용으로 쓰일 수 있어