<Abstract>Sm-Nd and Rb-Sr whole-rock isochron dating of the samples of cumulated gabbro,diabase and andesitic porphyrite from the A-rmantai ophiolite, Xinjiang, yielded the ages Of 561 ±41 Ma (Nd(t) = 6. 1 ...<Abstract>Sm-Nd and Rb-Sr whole-rock isochron dating of the samples of cumulated gabbro,diabase and andesitic porphyrite from the A-rmantai ophiolite, Xinjiang, yielded the ages Of 561 ±41 Ma (Nd(t) = 6. 1 ) and 392±17 Ma [ (87Sr/86Sr)i = 0. 7041], which stand for the ages of creation and later metamorphism of the ophiolites, respectively. The creation environment of the Armantai ophiolites seems to a back-arc basin caused by the southward subduction of the palaeo-Asia Ocean.展开更多
Computer technology is one of the main technologies of the information society, the development of computer education satisfies for requirements to science, the world and the future, and it is an important part of stu...Computer technology is one of the main technologies of the information society, the development of computer education satisfies for requirements to science, the world and the future, and it is an important part of students＇ quality education, it is of great significance to improve the scientific and cultural level of the students, to promote the teaching content modernization of education and teaching reform, to improve the quality of education and the level of management.展开更多
Simulation is an important and useful technique helping users understand and model real life systems. Once built, the models can run proving realistic results. This supports making decisions on a more logical and scie...Simulation is an important and useful technique helping users understand and model real life systems. Once built, the models can run proving realistic results. This supports making decisions on a more logical and scientific basis. The paper introduces method of simulation, and describes various types of its application. The authors used the method of analysis of the creation and implementation of the programme code. The authors compared parallel instruction of computing defined to pipelined instructions. The power of simulation is that a common model can be used to design a large variety of systems. An important aspect of the simulation method is that a simulation model is designed to be repeated in actual computer systems, especially in multicore processors. For this reason, it is important to minimize average waiting time for fetch and decode stage instructions. The objective of the research is to prove that the parallel operation of programme code is faster than sequential operation code on the multi processor architecture. The system modeling uses methods and simulation on the parallel computer systems is very precise. The time benefit gained in simulation of mathematical model on the pipeline processor is higher than the one in simulation of mathematical model on the multi processors computer system.展开更多
文摘<Abstract>Sm-Nd and Rb-Sr whole-rock isochron dating of the samples of cumulated gabbro,diabase and andesitic porphyrite from the A-rmantai ophiolite, Xinjiang, yielded the ages Of 561 ±41 Ma (Nd(t) = 6. 1 ) and 392±17 Ma [ (87Sr/86Sr)i = 0. 7041], which stand for the ages of creation and later metamorphism of the ophiolites, respectively. The creation environment of the Armantai ophiolites seems to a back-arc basin caused by the southward subduction of the palaeo-Asia Ocean.
文摘Computer technology is one of the main technologies of the information society, the development of computer education satisfies for requirements to science, the world and the future, and it is an important part of students＇ quality education, it is of great significance to improve the scientific and cultural level of the students, to promote the teaching content modernization of education and teaching reform, to improve the quality of education and the level of management.
文摘Simulation is an important and useful technique helping users understand and model real life systems. Once built, the models can run proving realistic results. This supports making decisions on a more logical and scientific basis. The paper introduces method of simulation, and describes various types of its application. The authors used the method of analysis of the creation and implementation of the programme code. The authors compared parallel instruction of computing defined to pipelined instructions. The power of simulation is that a common model can be used to design a large variety of systems. An important aspect of the simulation method is that a simulation model is designed to be repeated in actual computer systems, especially in multicore processors. For this reason, it is important to minimize average waiting time for fetch and decode stage instructions. The objective of the research is to prove that the parallel operation of programme code is faster than sequential operation code on the multi processor architecture. The system modeling uses methods and simulation on the parallel computer systems is very precise. The time benefit gained in simulation of mathematical model on the pipeline processor is higher than the one in simulation of mathematical model on the multi processors computer system.
