transfer the chained proof-of-work solutions, which was vulnerable to Sybil attacks, though.
1)Who developed hashcash, a proof-of-work scheme for spam control?
① David Chaum
② Stefan Brands
③ Adam Back
④ Wei Dai
해설
위 지문의 2~3번째 줄에 다음과 같이 설명되어 있다.
Adam Back developed hashcash, a proof- of-work scheme for spam control.
따라서 정
Restriction endonuclease는 무엇인가?
1. 특이적으로 restriction endonuclease 인식 부위에 근접한 곳이나 내부를 절단하는 것
2. nucleolytic activity를 위해 ATP 가수분해를 필요로 하지 않는다는 것
(중략)
각각의 core는
α-helices에 의해 접혀
5가닥으로 혼합된 β-sheet로 구성
4가지의 단백질이
촉매
share in an gy in ingly competitive airline industry. In 2000 Delta enjoyed a net income of more than $1 billion and carried a record 117 million passengers. Entering the new century the airline had extended its route network to serve 221 cities in 48 states, and an additional 118 cities in 47 foreign countries.
② Merger with Northwest Airlines -> Delta announced that it was merging with
platform offering a web based application. This Term is popularized at 'O'Reilly Media' since 2003. The promoter of this concept predicts that web2.0 alternates with the desktop computer application ultimately. The features arranged by John Battelle at the first web2.0 conference of web2.0 are as follows:
the Internet environment represented by openness and participation, sharing
share but is showing the fastest growth, where the market share increased from 10.9% to 16.1% in a year. In contrast, RIM, which has the second largest market share, faced a drop in market share from 20.9percent to 19.4percent.
Recently, Apple launched the iPad, which is a ‘table PC’. Basically it enlarged the iPod Touch, and strengthened the performance. This is a completely new product,
with relationships at work and believe The Body Shop has a culture where people are treated with care, honesty and respect.
Aspect of work % of satisfaction
Relationships 88.6
My role and the work I do 86.9
Benefits 84.4
Workplace culture 83.4
Company values 82.6
Work/Life balance 82.0
Learning and development 80.2
Pay, benefits and recognition
While the workers were very satisfied wit
One of our competitive strengths is the ability to anticipate consumer dining and taste preferences and adapt our menu to the latest trends in food consumption to keep it relevant to consumers. We create new menu items to keep pace with changing consumer tastes and preferences, and regularly update our ingredients and cooking methods to improve the quality and consistency of our food. Generally,
soon become advertiser.
-Alliances with Starbucks
*Definition: two different company contract to achieve their goal and share danger and profit through interactive relationship. Because they combine individual capability for their goal, such business is used to get more resources, technology, labor. It can make them to precede.
Specifically they can get effect through alliance like this.
1 Introduction: Amazon.com
Amazon.com is a company founded in 1994, US. The name is from the world’s biggest river. Its logo represents a bent arrow from A to Z, which implies its will to deliver every product in alphabet to its customers. The bent arrow also represents customer’s satisfaction. Amazon.com began its Internet retail store service in 1995. At first, it only dealt with books, f
▣ Overview
The number of Korean emigration doubled in 1980s and a lot of them settled in USA. Even though they started to live in the US, the Korean atmosphere affected by Confucianism still existed within the household. Korean housewives living in the US had been watching Korean soap opera still, gathering at home, and renting out the video tape from the shop. These wives' soap opera viewing