患者男性，55岁，活动时心前区疼痛1年余，1个月来，患者发作次数增多，每天3～5次，多在午睡、夜间睡眠时或晨起发作，持续20分钟以上缓解，含服硝酸甘油2～5分钟后缓解。临床诊断为变异型心绞痛。胸痛发作时心电图改变（）
A.心电图无明显改变 B.相关导联有异常Q波 C.相关导联ST段抬高 D.相关导联ST段下移 E.相关导联T波倒置
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In reading the pages of American Scientist, I have been struck by the stunning progress being made in science and engineering, new phenomena discovered, new materials synthesized, new methods developed. (46) What I see behind many of these exciting stories is the widespread and even revolutionary use of distributed intelligence that is made possible by the "wiring" of the scientific community. It is more than a time saver or a communication enhance; it is enabling us to think in new ways and its impact on society may be monumental. The term "information age" probably does not do justice to the possibilities of this emerging era. (47) This is an age of "knowledge and distributed intelligence", in which knowledge is available to anyone, located anywhere, at any time; and in which power, information, and control are moving from centralized systems to individuals. This era calls for a new form of leadership and vision from the academic science and engineering community. We know from countless examples that the academic science and the engineering have enabled our society to make the most of new technologies. We wouldn’t have today’s advanced computer graphics systems if mathematicians hadn’t been able to solve problems related to surface geometry. (48) We wouldn’t have networks capable of handling massive amounts of data if physicists and astronomers hadn’t continuously forged tools to look more deeply into subatomic structures and the cosmos. Chemists’ efforts to simulate complex phenomena and predict the properties of many electron systems have inspired massively parallel architectures for computing. And the information made available by the sequencing of the human genome has caused us to rethink how to store, manipulate, and retrieve data most effectively. (49) It will take new insights from studies of human cognition, linguistics, neurobiology, computing, and more to develop systems that truly augment our capacity to learn and create. The best may be yet to come. Despite brutally tight constraints on federal discretionary spending, President Clinton has stepped forward to champion a 3 percent increase (uncorrected for inflation) in the national 1998 budget. The president’s request is only the first step in the congressional budget process ahead. (50) Given that the priorities of Congress will almost certainly differ from those of the president, it will take an unprecedented level of input and commitment from the research community to ensure the investments in science and engineering.
In reading the pages of American Scientist, I have been struck by the stunning progress being made in science and engineering, new phenomena discovered, new materials synthesized, new methods developed. (46) What I see behind many of these exciting stories is the widespread and even revolutionary use of distributed intelligence that is made possible by the "wiring" of the scientific community. It is more than a time saver or a communication enhance; it is enabling us to think in new ways and its impact on society may be monumental.
The term "information age" probably does not do justice to the possibilities of this emerging era. (47) This is an age of "knowledge and distributed intelligence", in which knowledge is available to anyone, located anywhere, at any time; and in which power, information, and control are moving from centralized systems to individuals. This era calls for a new form of leadership and vision from the academic science and engineering community. We know from countless examples that the academic science and the engineering have enabled our society to make the most of new technologies. We wouldn’t have today’s advanced computer graphics systems if mathematicians hadn’t been able to solve problems related to surface geometry. (48) We wouldn’t have networks capable of handling massive amounts of data if physicists and astronomers hadn’t continuously forged tools to look more deeply into subatomic structures and the cosmos. Chemists’ efforts to simulate complex phenomena and predict the properties of many electron systems have inspired massively parallel architectures for computing. And the information made available by the sequencing of the human genome has caused us to rethink how to store, manipulate, and retrieve data most effectively. (49) It will take new insights from studies of human cognition, linguistics, neurobiology, computing, and more to develop systems that truly augment our capacity to learn and create. The best may be yet to come.
Despite brutally tight constraints on federal discretionary spending, President Clinton has stepped forward to champion a 3 percent increase (uncorrected for inflation) in the national 1998 budget. The president’s request is only the first step in the congressional budget process ahead. (50) Given that the priorities of Congress will almost certainly differ from those of the president, it will take an unprecedented level of input and commitment from the research community to ensure the investments in science and engineering.
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