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¡¡¡¡New research shows a good night¡¯s rest
¡¡¡¡isn¡¯t a luxury¨Cit¡¯s critical for your brain and for your health
¡¡¡¡±¾ÎÄÓн϶àɾ¼õ£¬µã»÷²é¿´ÔÎÄ
¡¡¡¡http://sleep-apnea-dentist-nj.info/the-power-of-sleep/
¡¡¡¡As it is£¬ sleep is so undervalued that getting
¡¡¡¡by on fewer hours has become a badge of honor¡£ Plus£¬ we live in a culture that
¡¡¡¡caters to the late-nighter£¬ from 24-hour grocery stores to online shopping
¡¡¡¡sites that never close¡£ It¡¯s no surprise£¬ then£¬ that more than half of American
¡¡¡¡adults don¡¯t get the 7 to 9 hours of shut-eye every night as recommended by
¡¡¡¡sleep experts¡£
¡¡¡¡Whether or not we can catch up on sleep¨Con the weekend£¬ say¨Cis a hotly
¡¡¡¡debated topic among sleep researchers£» the latest evidence suggests that while
¡¡¡¡it isn¡¯t ideal£¬ it might help¡£ When Liu£¬ the UCLA sleep researcher and
¡¡¡¡professor of medicine£¬ brought chronically sleep-restricted people into the lab
¡¡¡¡for a weekend of sleep during which they logged about 10 hours per night£¬ they
¡¡¡¡showed improvements in the ability of insulin to process blood sugar¡£ That
¡¡¡¡suggests that catch-up sleep may undo some but not all of the damage that sleep
¡¡¡¡deprivation causes£¬ which is encouraging given how many adults don¡¯t get the
¡¡¡¡hours they need each night¡£ Still£¬ Liu isn¡¯t ready to endorse the habit of
¡¡¡¡sleeping less and making up for it later¡£
¡¡¡¡Sleeping pills£¬ while helpful for some£¬ are not necessarily a silver
¡¡¡¡bullet either¡£ ¡°A sleeping pill will target one area of the brain£¬ but there¡¯s
¡¡¡¡never going to be a perfect sleeping pill£¬ because you couldn¡¯t really
¡¡¡¡replicate the different chemicals moving in and out of different parts of the
¡¡¡¡brain to go through the different stages of sleep£¬¡± says Dr¡£ Nancy Collop£¬
¡¡¡¡director of the Emory University Sleep Center¡£
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¡¡¡¡À´Ô´£ºWho Killed the Nokia Phone£¿
¡¡¡¡It seems to be a law in the technology industry that leading companies eventually lose their positions ¨C often quickly and brutally¡£ Mobile-phone champion Nokia£¬ one of Europe¡¯s biggest technology success stories£¬ was no exception£¬ losing its market share in the space of just a few years¡£ Can the industry¡¯s new champions£¬ Apple and Google ¨C not to mention titans in other tech sectors ¨C avoid Nokia¡¯s fate£¿
¡¡¡¡In 2007£¬ Nokia accounted for more than 40% of mobile-phone sales worldwide¡£ But
¡¡¡¡consumers¡¯ preferences were already shifting toward touch-screen smartphones¡£ With the introduction of Apple¡¯s iPhone in the middle of that year£¬ Nokia¡¯s market share shrunk rapidly and revenue plummeted¡£ By the end of 2013£¬ Nokia had sold its phone business to Microsoft¡£
¡¡¡¡What sealed Nokia¡¯s fate was a series of decisions made by Stephen Elop in his
¡¡¡¡position as CEO£¬ which he assumed in October 2010¡£ Each day that Elop spent at Nokia¡¯s helm£¬ the company¡¯s market value declined by €18 million £¨$23 million£© ¨C making him£¬ by the numbers£¬ one of the worst CEOs in history¡£
¡¡¡¡But Elop was not the only person at fault¡£ Nokia¡¯s board resisted change£¬ making it impossible for the company to adapt to rapid shifts in the industry¡£ Most notably£¬ Jorma Ollila£¬ who had led Nokia¡¯s transition from an industrial conglomerate to a technology giant£¬ was too enamored with the company¡¯s previous success to recognize the change that was needed to sustain its competitiveness¡£
¡¡¡¡The company also embarked on a desperate cost-cutting program£¬ which included the
¡¡¡¡elimination of thousands of jobs¡£ This contributed to the deterioration of the company¡¯s once-spirited culture£¬ which had motivated employees to take risks and make miracles¡£ Good leaders left the company£¬ taking Nokia¡¯s sense of vision and direction with them¡£ Not surprising£¬ much of Nokia¡¯s most valuable design and programming talent left as well¡£
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