DCT;변환부호화(일종의 양자화 기술)

영상데이터를 효과적으로 압축하기 위해 가장 널리 쓰이는 손실부호화 기법은 변환부호화이다.

이 방식의 기본구조는 공간적으로 높은 상관도를 가지면서 배열되어 있는 데이터를 직교변환에 의해 저주파 성분으로부터 고주파 성분에 이르기까지 여러 주파수 성분으로 나누어 성분별로 달리 양자화하는 것이다.

via HardWareLAB.

 

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비월 주사 방식 – 위키백과, 우리 모두의 백과사전

비월 주사 방식(飛越走査方式, Interlace scanning)은 하나의 영상을 홀수와 짝수 가로줄로 나뉜 것을 번갈아가며 표시하는 영상의 표시 방식이다.

아날로그 대역폭을 높이지 않고 (주사선 추가 없이)텔레비전과 같은 비디오 영상 장치에 표시될 영상 품질을 개선하기 위한 방식이다.

via 비월 주사 방식 – 위키백과, 우리 모두의 백과사전.

 

Specification (technical standard) – Wikipedia, the free encyclopedia

Specification (often abbreviated as spec) may refer to an explicit set of requirements to be satisfied by a material, design, product, or service.

 

a notion of “in spec” or “out of spec”, not “better” or “worse”. A specification is a type of technical standard.

via Specification (technical standard) – Wikipedia, the free encyclopedia.

 

Morning Class_Dec 6th 2013

Reinventing the wheel: Startup company turns bicycles into smart electric-hybrids
A startup is launching a new device that transforms almost any bicycle into an electric-hybrid vehicle using an app on a smartphone.
The device, called the Copenhagen Wheel, is installed as part of a rear hub(mud blocker) of a bike wheel and is packed with a proprietary(owner’s 소유) computer, batteries and sensors that monitor how hard a rider is pedaling and activate an onboard motor whenever support is needed.
The device uses wireless connectivity to communicate with the biker’s smartphone to track distance traveled and elevation(when I go uphill) gained, share with friends the number of calories burned and lock the wheel remotely as soon as the owner walks away from the bike.
“The motor integrates itself with the rider’s motion very, very seamlessly,” said Assaf Biderman, who co-invented the device at the Massachusetts Institute of Technology’s SENSEable City Lab, where he is associate director. “It’s almost like having a riding companion riding together with you, making the ride easier, simpler.”
The combination of power from the Copenhagen Wheel and the cyclist’s energy can make an average biker move “almost like a Tour-de-France-level athlete in your daily commute,” said Biderman, who founded Cambridge, Mass.-based Superpedestrian Inc. that secured an exclusive license for the technology from MIT.
The Copenhagen Wheel seeks to tap into a lucrative(very important) market for electric bikes, also known as “e-bikes.”
In a recent report, clean-technology consulting company Navigant Research estimated worldwide revenue from electric bicycles will grow from $8.4 billion this year to $10.8 billion in 2020, fueled in part by desire for a viable(reasonable) alternative to increasingly congested city roads that makes crawling in car traffic less palatable.(can’t tolerate)
In the U.S., the trend is reflected in Census data showing the number of bicycle commuters rose 60 percent in the decade ending in 2010.
“Over the past few years, we’ve seen a cycling renaissance(usage) throughout the world,” Biderman said. “People are looking for alternatives.”

Amy Louise Dec 13th

oriental medical clinic 한의원

electromagnetic waves 전자파

[12/13/13 6:04:45 AM] Amy Louise : over the counter medicine
[12/13/13 6:08:16 AM] Amy Louise : These days, it seems many corporations are facing thorny(얽힌) problems. British Petroleum, Toyota, Hewlett-Packard, and now Johnson & Johnson (J & J). Maybe someday computers will take over the job of management and things may run a little smoother. After all, as the popular old saying goes: to err is human.(all human makes mistakes)

At a recent town-hall meeting(everybody that’s important), Johnson & Johnson Chief Executive William Weldon sketched out for employees his plans for fixing the manufacturing problems that have prompted a string of recalls(a lot of happening in a row) and triggered a criminal investigation.

Now, he faces the more difficult task of executing those plans and convincing the public that J&J has put its problems behind it.(no longer it is issue let just move on) His success—or failure—may be among the most important legacies he leaves the company near the end of a four-decade career there.

Mr. Weldon, 61 years old, is expected to retire late next year, though the company doesn’t have a mandatory retirement age. To resolve the pressing issues(important issue), he will likely draw on a careful, low-key approach(confidential) to decision-making and the support of J&J’s board, in keeping with his conservative style, people familiar with the situation say.

And the second article:

An exciting new trend is out there, according to the Wall Street Journal: companies paying bonuses semi-annually. The Journal reports today that this practice is “gaining traction”.

More bosses are getting two bites at their bonus apples. A growing number of U.S. companies, mainly in the retail and high-tech industries, are replacing their annual incentive structure with bonuses earned twice a year. In addition to boosting morale at a time of salary freezes and pay cuts, semiannual bonuses help companies retain key players by dangling the carrot of two targets a year, while giving boards a chance to raise those goals quickly if economic conditions improve.”

Rewarding managers for brief bursts of performance strikes certain compensation critics as a bad idea. “Earning a bonus every six months is an awful short-term vindication of worth,” says Kenneth Feinberg, the U.S. pay czar. People will “cut corners to get the quick fix,” he warns.

Good luck,
Amy lou

Dec 6 Amy Morning Class

As retailers gear up(ready to) for the traditional shop-fest known as Black Friday, they are focusing on the mobs(군중) that line up outside stores and—increasingly—on the masses that shop online from home.

Chain stores prefer impulse-purchaseprone(more likely to do st) store shoppers. Yet sales growth during the busy Thanksgiving weekend more often is coming from Internet shoppers like Melanie Cortese. Going to Woodbridge Center Mall with her mom on Black Friday was a family tradition for Ms. Cortese, a 37-year-old New Jersey mother of two. But no longer: she plans to go to bed on Thanksgiving night with a laptop nearby and wake up on Black Friday to shop online instead…

… Retailers can’t turn their back on shoppers who like to go to the stores. For example, Brookstone sells technology items that need salespeople to demonstrate the products and let shoppers play with them, said Chief Executive Stephen Bebis.

And while customers flock to the super-discounts, which for the retailers are often loss leaders, a lot of full-price selling also occurs on the day, retailers say. “It is one of our most profitable days,” said, Jim Kunihiro, chief marketing officer for Sears Holdings Corp. Like many retailers seeking to get the jump on(be better than competitor) their competitors, Sears is opening for the first time on Thanksgiving Day for a first round of door busters at 8 p.m., followed by another round of special discounts at 4 a.m. Friday.