With the popularization of the Intemet, permeation of sensor networks, emergence of big data, increase in size of the information community, and interlinking and fusion of data and information throughout human society...With the popularization of the Intemet, permeation of sensor networks, emergence of big data, increase in size of the information community, and interlinking and fusion of data and information throughout human society, physical space, and cyberspace, the information environment related to the current development of artificial intelligence （AI） has profoundly changed. AI faces important adjustments, and scientific foundations are confronted with new breakthroughs, as AI enters a new stage： AI 2.0. This paper briefly reviews the 60-year developmental history of AI, analyzes the external environment promoting the formation of AI 2.0 along with changes in goals, and describes both the beginning of the technology and the core idea behind AI 2.0 development. Furthermore, based on combined social demands and the information environment that exists in relation to Chinese development, suggestions on the develoDment of Al 2.0 are given.展开更多
Human epidermal growth factor receptor 2(HER2) overexpression is increasingly recognized as a frequent molecular abnormality in gastric and gastroesophageal cancer. With the recent introduction of HER2 molecular targe...Human epidermal growth factor receptor 2(HER2) overexpression is increasingly recognized as a frequent molecular abnormality in gastric and gastroesophageal cancer. With the recent introduction of HER2 molecular targeted therapy for patients with advanced gastric cancer, determination of HER2 status is crucial in order to select patients who may benefit from this treatment. This paper provides an update on our knowledge of HER2 in gastric and gastroesophageal cancer, including the prognostic relevance of HER2, the key differences between HER2 protein expression interpretation in breast and gastric cancer, the detection methods and the immunohistochemistry scoring system.展开更多
对2013年1-12 月ECMWF细网格模式2 m 温度在新疆及周边地区的预报效果进行了统计检验.结果表明：ECMWF细网格模式2 m温度预报为系统性偏高,预报效果随预报时效的延长而逐渐变差.72 h内温度预报的绝对误差小、预报准确率高,对实际温度预...对2013年1-12 月ECMWF细网格模式2 m 温度在新疆及周边地区的预报效果进行了统计检验.结果表明：ECMWF细网格模式2 m温度预报为系统性偏高,预报效果随预报时效的延长而逐渐变差.72 h内温度预报的绝对误差小、预报准确率高,对实际温度预报有很好的指导作用;96-168 h 温度预报的绝对误差较小,预报准确率较高,对实际温度预报具有参考价值;192-240 h 温度预报的绝对误差大、预报准确率低,对实际温度预报参考价值不大.温度预报精度在蒙古国西部最低,北疆盆地次之,南疆盆地最高.展开更多
文摘With the popularization of the Intemet, permeation of sensor networks, emergence of big data, increase in size of the information community, and interlinking and fusion of data and information throughout human society, physical space, and cyberspace, the information environment related to the current development of artificial intelligence （AI） has profoundly changed. AI faces important adjustments, and scientific foundations are confronted with new breakthroughs, as AI enters a new stage： AI 2.0. This paper briefly reviews the 60-year developmental history of AI, analyzes the external environment promoting the formation of AI 2.0 along with changes in goals, and describes both the beginning of the technology and the core idea behind AI 2.0 development. Furthermore, based on combined social demands and the information environment that exists in relation to Chinese development, suggestions on the develoDment of Al 2.0 are given.
文摘Human epidermal growth factor receptor 2(HER2) overexpression is increasingly recognized as a frequent molecular abnormality in gastric and gastroesophageal cancer. With the recent introduction of HER2 molecular targeted therapy for patients with advanced gastric cancer, determination of HER2 status is crucial in order to select patients who may benefit from this treatment. This paper provides an update on our knowledge of HER2 in gastric and gastroesophageal cancer, including the prognostic relevance of HER2, the key differences between HER2 protein expression interpretation in breast and gastric cancer, the detection methods and the immunohistochemistry scoring system.
文摘对2013年1-12 月ECMWF细网格模式2 m 温度在新疆及周边地区的预报效果进行了统计检验.结果表明：ECMWF细网格模式2 m温度预报为系统性偏高,预报效果随预报时效的延长而逐渐变差.72 h内温度预报的绝对误差小、预报准确率高,对实际温度预报有很好的指导作用;96-168 h 温度预报的绝对误差较小,预报准确率较高,对实际温度预报具有参考价值;192-240 h 温度预报的绝对误差大、预报准确率低,对实际温度预报参考价值不大.温度预报精度在蒙古国西部最低,北疆盆地次之,南疆盆地最高.
