The underground fluid short-term anomalies of earthquake activity are studied. Two kinds of typical characteristics of precursors, the turn-around type and the single type, are summarized. Through studying regional ch...The underground fluid short-term anomalies of earthquake activity are studied. Two kinds of typical characteristics of precursors, the turn-around type and the single type, are summarized. Through studying regional characteristics of earthquake precursors in North China (including Northwest China) and Southwest China, we find that the two types of precursors are strongly related to geological structures in regional distribution and they show varying characteristics with earthquake magnitude in number.展开更多
This paper divided the evolution of modern Chinese vernacular architecture(1949–2010) into 3 stages: early exploration,confine and confusion,and modern development,by taking time line as the clue,vernacular character...This paper divided the evolution of modern Chinese vernacular architecture(1949–2010) into 3 stages: early exploration,confine and confusion,and modern development,by taking time line as the clue,vernacular characteristics of modern architecture in Xi'an during different phases as the support,and combining literature research and field investigation. On this basis,it reviewed historical background,relevant context and typical features of modern vernacular architecture in Xi'an during different phases,and further concluded the evolution laws and research level of modern Chinese vernacular architecture.展开更多
In the article, the features of using modern teaching tecnologies are investigated and results are revealed. The establishment of teacher-pupil relationships based on comfortable mutual trust and equal rights is the d...In the article, the features of using modern teaching tecnologies are investigated and results are revealed. The establishment of teacher-pupil relationships based on comfortable mutual trust and equal rights is the direct effect of proper and expedient use of innovative training technologies. Teaching technologies＇ features are explored, experiment examples are listed, and all these results are analysed in this article. In the article, modem teaching technologies＇ characteristic features are explored and the need of these features in teaching process with the teacher-pupil relationship is substantiated. Some conclusions were made to analyse all these points.展开更多
We report on the properties of strong pulses from PSR B0656＋14 by analyzing the data obtained using the Urumqi 25-m radio telescope at 1540 MHz from August 2007 to September 2010.In 44 h of observational data,a total...We report on the properties of strong pulses from PSR B0656＋14 by analyzing the data obtained using the Urumqi 25-m radio telescope at 1540 MHz from August 2007 to September 2010.In 44 h of observational data,a total of 67 pulses with signal-to-noise ratios above a 5σthreshold were detected.The peak flux densities of these pulses are 58 to 194 times that of the average profile,and their pulse energies are 3 to 68 times that of the average pulse.These pulses are clustered around phases about 5-ahead of the peak of the average profile.Compared with the width of the average profile,they are relatively narrow,with the full widths at half-maximum ranging from 0.28 ° to 1.78 °.The distribution of pulse-energies follows a lognormal distribution.These sporadic strong pulses detected from PSR B0656＋14 have different characteristics from both typical giant pulses and its regular pulses.展开更多
文摘The underground fluid short-term anomalies of earthquake activity are studied. Two kinds of typical characteristics of precursors, the turn-around type and the single type, are summarized. Through studying regional characteristics of earthquake precursors in North China (including Northwest China) and Southwest China, we find that the two types of precursors are strongly related to geological structures in regional distribution and they show varying characteristics with earthquake magnitude in number.
基金Sponsored by Cultivation Foundation of Xi’an University of Science and Technology(201640)
文摘This paper divided the evolution of modern Chinese vernacular architecture(1949–2010) into 3 stages: early exploration,confine and confusion,and modern development,by taking time line as the clue,vernacular characteristics of modern architecture in Xi'an during different phases as the support,and combining literature research and field investigation. On this basis,it reviewed historical background,relevant context and typical features of modern vernacular architecture in Xi'an during different phases,and further concluded the evolution laws and research level of modern Chinese vernacular architecture.
文摘In the article, the features of using modern teaching tecnologies are investigated and results are revealed. The establishment of teacher-pupil relationships based on comfortable mutual trust and equal rights is the direct effect of proper and expedient use of innovative training technologies. Teaching technologies＇ features are explored, experiment examples are listed, and all these results are analysed in this article. In the article, modem teaching technologies＇ characteristic features are explored and the need of these features in teaching process with the teacher-pupil relationship is substantiated. Some conclusions were made to analyse all these points.
基金funded by the National Natural Science Foundation of China(Grant No.10973026)
文摘We report on the properties of strong pulses from PSR B0656＋14 by analyzing the data obtained using the Urumqi 25-m radio telescope at 1540 MHz from August 2007 to September 2010.In 44 h of observational data,a total of 67 pulses with signal-to-noise ratios above a 5σthreshold were detected.The peak flux densities of these pulses are 58 to 194 times that of the average profile,and their pulse energies are 3 to 68 times that of the average pulse.These pulses are clustered around phases about 5-ahead of the peak of the average profile.Compared with the width of the average profile,they are relatively narrow,with the full widths at half-maximum ranging from 0.28 ° to 1.78 °.The distribution of pulse-energies follows a lognormal distribution.These sporadic strong pulses detected from PSR B0656＋14 have different characteristics from both typical giant pulses and its regular pulses.
