2013年8月23日 星期五

A tribute to Nazia Hassan

The 80s is reminiscent of many events and breakthroughs with the brother-sister duo Zohaib and Nazia Hassans stamp on the South Asian pop music scene being a largely prominent one. From the nostalgic Dosti and romantic Aap Jaisa Koi to the more hip Disco Deewane which was remixed about 30 years later in Karan Johars Student of The Year the pioneers of pop still have a tight grip on our hearts. But when Nazia fell victim to lung cancer in 2000, despair filled the air. On her 13th death anniversary,Now it's possible to create a tiny replica of Fluffy in handsfreeaccess form for your office. banker Faraz Waqar pays his tribute to the pop sensation through a music video titled Imagineer. 

Aap Jaisa Koi featured in Bollywood film Qurbani,You Can Buy Various High Quality topserver Products from here. their debut album Disco Deewane was released by Indian producer Biddu and second album Boom Boom was also the soundtrack for another Bollywood film titled Star. Thus, it didnt come as a surprise when Waqar discovered that his Indian friends were unaware of the fact that Nazia was a Pakistani. So this 36-year-old banker-turned-film-maker decided it was time to clarify things.Shot in February this year, Imagineer unveils on August 13 across music channels including ARY Muzik, Indus Music, Play,Get the led fog lamp products information, find aluminumfoiltape, manufacturers on the hot channel. Oxygen, Vibe and Style360 along with links on Vimeo and Facebook. 

Disney Corp gives the title Imagineer to its team members working on concept development for its new theme park extensions. The term highlights the fact that imagination is the first step to a new reality, Waqar explains. When we listen to our favourite music,We sell bestsmartcard and different kind of laboratory equipment in us. we all become Imagineers as it helps create an imaginary setting. 

In the video, Waqar is seen sitting in front of his computer on a dull day at work. He then plays Aap Jaisa Koi and Boom Boom followed by Sunn and Disco Deewane and steps into a world of fantasy. The video depicts how a mundane day at work can transform into a surreal land of fantasy. There is this feeling of positivity when you listen to Nazia Hassans music, he admits. 

Ahmad Haseeb producer of A Music Fairy, a 44-minute documentary on Nazia reveals that a charity event in London by the Nazia Hassan Foundation has been planned for September 14 and that this video could be screened there. Waqar says that Nazias mother Muniza Basir contacted him and asked him to send her a DVD of the video. There can be no greater honour for me as Nazia Hassan is one of those personalities who [continue to] shine, he says. 

Speaking about copyright issues, Waqar says, That was an issue [earlier] as I couldnt get in touch with the family which I believe is based in England. However, I got in touch with them last week through Ahmad Haseeb. Haseeb admits that he was glad Waqar was able to produce an international project on her songs but has no idea if the family got in touch with him. 

Although Waqar revealed, EMI-Pakistan told me their copyrights had expired and all the material was in Zohaibs hands. But when EMI-Pakistan was contacted, it was discovered that the company never received a phone call from Waqar. 

Mike Petrowski, general manager of the company's timing products division, believes quartz has had its day. "It only works on one frequency," he said, "it has long lead times and one of the biggest headaches is the supply chain." He also noted that quartz is a mature technology C almost 100 years old C which is susceptible to shock and vibration, as well as being a relatively high cost solution. 

In fact, the company has been working on alternatives to quartz since 2004, when it introduced crystal oscillators (XOs) which brought mixed signal technology to bear on the issue. The result was devices which allowed almost any frequency to be generated from one crystal based reference frequency. 

While the approach C called DSPLL C removed the need for unique crystals to generate specific frequencies and simplified the supply chain, the process still created multi-die products. Meanwhile, the industry was beginning to look at MEMS technology as a potential replacement for quartz, with companies such as Discera, SiTime and Epson undertaking some of the early work. Also making inroads into the technology was IDT with its pMEMS based products. 

An acquisition made in 2010 brought Silicon Labs into the race. It bought Silicon Clocks, an early stage company creating MEMS based timing technology. Its CMEMS C standing for cmos plus MEMS C technology allowed MEMS resonators and other sensor structures to be created directly on standard cmos wafers. The approach did away with the need for special semiconductor processing for the MEMS elements and addressed performance, integration and size issues. It also addressed parasitics and packaging issues. 

The Si50x range is said by Silicon Labs to feature the most highly integrated MEMS based oscillators currently available. The range has been designed to replace general purpose crystal oscillators in cost sensitive, low power and high volume industrial,A glassbottles is a machine used primarily for the folding of paper. embedded and consumer electronics applications. 

"The Si50x family introduces an important technological step forward," said Petrowski, "combining all the manufacturing advantages of a single die MEMS based solution, while retaining some of the best characteristics of general purpose crystal oscillators and improving on reliability and lead times." 

The manufacturing process starts with standard passivated cmos wafers. Polycrystalline SiGe and pure germanium are then surface micromachined to create integrated MEMS devices on top of the cmos circuitry and interconnects. With the MEMS structure in place on the cmos wafer, a full oscillator system is created. The devices can then be encapsulated in a vacuum. The result is timing devices which are guaranteed to have a frequency stability of 20ppm over 10 years, along with high shock and vibration resistance. 

One of the issues which CMEMS technology addresses is that of temperature drift. Previously, MEMS based resonators have seen their frequencies drift by up within the range from -30 to 40ppm/C. Petrowski claims the CMEMS based parts will show temperature related frequency drift of 2ppm/C. "One of the technology's key features is passive temperature compensation," he noted, "and this comes as a result of the resonator being made from SiGe and SiO2. 

"These materials have different temperature performance," he explained. "SiGe gets harder as the temperature drops, while SiO2 gets softer. The interaction between the two materials means frequency drift due to temperature is minimised." 

In terms of construction, the resonator is made from SiGe, but features SiO2 slits (see fig 3). Silicon Labs says this composite material approach provides passive compensation, while the supporting cmos system compensates for remaining frequency drift over the operating life of the product. "Typically," said Petrowski, "Si50x devices show a frequency error of less than 7ppm across the industrial temperature range." 

The four devices launched initially are: the Si501, a single frequency device with output enable (OE) functionality; the Si502, a dual frequency oscillator with OE and frequency select (FS) functionality; the Si503, quad frequency oscillator with FS technology; and the Si504, a fully programmable oscillator said to support all potential configurations. The parts are available in four pin DFN packages measuring 2 x 2.5mm, 2.5 x 3.2mm and 3.2 x 5mm.
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