This paper discusses the transitional process of China’s industrial system from planned economy to socialist market economy from the development of the industrial enterprise system, government industrial management s...This paper discusses the transitional process of China’s industrial system from planned economy to socialist market economy from the development of the industrial enterprise system, government industrial management system and the industrial guild, the reform of which, the author puts forth, are respectively the core, the key and the important part of the reform of the industrial system. It also analyses the trend of these reforms.展开更多
该文提出了一种利用角度和多普勒频率的一发一收外辐射源定位体制,针对运动目标,给出了接收站的最优航迹规划。该文采用定位的位置误差(Geometrical Dilution Of Precision,GDOP)作为优化对象,具体分析2维目标定位的优化问题,通过一边...该文提出了一种利用角度和多普勒频率的一发一收外辐射源定位体制,针对运动目标,给出了接收站的最优航迹规划。该文采用定位的位置误差(Geometrical Dilution Of Precision,GDOP)作为优化对象,具体分析2维目标定位的优化问题,通过一边估计目标一边优化接收站运动的方法,使用无迹卡尔曼滤波(Unscented Kalman Filter,UKF)估计目标的位置和速度,以达到在定位的各个时刻能够得到最优的定位精度。仿真实验验证了该方法的有效性。展开更多
Segmental duplications on rice (Oryza sativa L.) chromosomes 8, 9, 11, and 12 were studied by examining the distributions of sequences resolved by 13 probes detecting multiple copies of DNA sequences. Four of the hyb...Segmental duplications on rice (Oryza sativa L.) chromosomes 8, 9, 11, and 12 were studied by examining the distributions of sequences resolved by 13 probes detecting multiple copies of DNA sequences. Four of the hybridization bands detected by a repetitive sequence probe, rTRS, were mapped to the ends of all the four chromosomes. Two or three of the bands detected by each of the other 12 probes were also mapped to different chromosomes. The bands detected by the same probe usually occurred in similar locations of different chromosomes. Loci detected by different DNA probes were often similarly arranged on different chromosomes. Chromosomes 8 and 9 showed colinearity of marker loci arrangement indicating a possible common origin. A segment on chromosome 9 was also very similar to the previously reported duplicated fragments on the ends of chromosomes 11 and 12 which were also detected in this study, indicating a likely common origin. Moreover, the various degrees of distributional similarity of the segments suggest a complex relationship among the chromosomes in the evolution of the rice genome. These results support the proposition that chromosome duplication and diversification may be a mechanism for the origin and evolution of the chromosomes in the rice genome.展开更多
Through analysis of geological characteristics of the gold deposit,the shape,occurrence,and spatial distribution of ore-controlling fault plane in the Shanhou mining area were investigated,and the regularities of enri...Through analysis of geological characteristics of the gold deposit,the shape,occurrence,and spatial distribution of ore-controlling fault plane in the Shanhou mining area were investigated,and the regularities of enrichment and emplacement of ore body were summarized. The analysis shows that the Shanhou gold deposit was controlled by NE-NNE Zhaoping fault zone; the fault gouge developed in fault zone provides a barrier to ore-bearing hydrothermal solution,and the industrial ore body is all distributed within 40 m of footwall of main fault plane. The industrial ore body is mainly enriched in the NE positions of fault where the deep dips changed to flat dips,and shows the obvious regularity of NE lateral trending with angle around 75°. The stress analysis of fault in mineralization epoch showed that the ore-controlling structure presented the characteristics of righthanded rotation inverse-fault activity in mineralization epoch,and the host space tended to occur in NE regional tension positions where the dips become flat in the strike of fault,causing emplacement of ore body. It is thought by combining equal interval distribution of deposit with spatial variation of industrial ore body and orecontrolling fault structure that the Shanhou gold deposit recurred in regularity and the non-ore interval occurred in the ore body. Meanwhile,it is predicted that the favorable target area of prospecting lies in the areas of deep main fault plane with NE strike( > 30°) and the deep dips changing to flat dips in the Shanhou mining area,and the prospecting should be emphasized. The favorable deep mineralization prospect exists in middle Beibo mining area,where is the key area for future prospecting.展开更多
In multi-agent systems(MAS),finding agents which are able to service properly in an open and dynamic environment are the key issue in problem solving.However,it is difficult to find agent resources quickly and positio...In multi-agent systems(MAS),finding agents which are able to service properly in an open and dynamic environment are the key issue in problem solving.However,it is difficult to find agent resources quickly and position agents accurately and complete the system integration by the keyword matching method,due to the lack of clear semantic information of the classical agent model.An semantic-based agent dynamic positioning mechanism was proposed to assist in the system dynamic integration.According to the semantic agent model and the description method,a two-stage process including the domain positioning stage and the service semantic matching positioning stage,was discussed.With this mechanism,proper agents that provide appropriate service to assign sub-tasks for task completion can be found quickly and accurately.Finally,the effectiveness of the positioning mechanism was validated through the in-depth performance analysis in the application of simulation experiments to the system dynamic integration.展开更多
A fully integrated frequency synthesizer with low jitter and low power consumption in 0.18 μm CMOS (complementary metal-oxide semiconductor) technology is proposed in this paper.The frequency synthesizer uses a novel...A fully integrated frequency synthesizer with low jitter and low power consumption in 0.18 μm CMOS (complementary metal-oxide semiconductor) technology is proposed in this paper.The frequency synthesizer uses a novel single-end gain-boosting charge pump, a differential coupled voltage controlled oscillator (VCO) and a dynamic logic phase/frequency detecor (PFD) to acquire low output jitter.The output frequency range of the frequency synthesizer is up to 1 200 MHz to 1 400 MHz for GPS (global position system) application.The post simulation results show that the phase noise of VCO is only 127.1 dBc/Hz at a 1 MHz offset and the Vp-p jitter of the frequency synthesizer output clock is 13.65 ps.The power consumption of the frequency synthesizer not including the divider is 4.8 mW for 1.8 V supply and it occupies a 0.8 mm×0.7 mm chip area.展开更多
This paper introduces a design to improve the radiotherapy accuracy of gamma knife. In this design, sensor is used to collect respiratory parameters and tumor displacement (caused by human respiration) model is establ...This paper introduces a design to improve the radiotherapy accuracy of gamma knife. In this design, sensor is used to collect respiratory parameters and tumor displacement (caused by human respiration) model is established through optimization modeling. At the same time, data are transferred to single chip microcomputer (SCM) system by pressure sensor and then stepping motor is controlled by SCM. Finally, the intelligent positioning bed is under the control of stepping motor. As a result, the intelligent positioning bed can move reverse to respiratory law. The experimental results showed that this method can reduce the influence of respiration on tumor displacement, improving the accuracy of intelligent positioning bed with simple circuit and low cost at the same time.展开更多
文摘This paper discusses the transitional process of China’s industrial system from planned economy to socialist market economy from the development of the industrial enterprise system, government industrial management system and the industrial guild, the reform of which, the author puts forth, are respectively the core, the key and the important part of the reform of the industrial system. It also analyses the trend of these reforms.
文摘Segmental duplications on rice (Oryza sativa L.) chromosomes 8, 9, 11, and 12 were studied by examining the distributions of sequences resolved by 13 probes detecting multiple copies of DNA sequences. Four of the hybridization bands detected by a repetitive sequence probe, rTRS, were mapped to the ends of all the four chromosomes. Two or three of the bands detected by each of the other 12 probes were also mapped to different chromosomes. The bands detected by the same probe usually occurred in similar locations of different chromosomes. Loci detected by different DNA probes were often similarly arranged on different chromosomes. Chromosomes 8 and 9 showed colinearity of marker loci arrangement indicating a possible common origin. A segment on chromosome 9 was also very similar to the previously reported duplicated fragments on the ends of chromosomes 11 and 12 which were also detected in this study, indicating a likely common origin. Moreover, the various degrees of distributional similarity of the segments suggest a complex relationship among the chromosomes in the evolution of the rice genome. These results support the proposition that chromosome duplication and diversification may be a mechanism for the origin and evolution of the chromosomes in the rice genome.
基金Project of Shanhou Gold Deposit of Laixi of Shandong Province(SDLX2012-3-28)
文摘Through analysis of geological characteristics of the gold deposit,the shape,occurrence,and spatial distribution of ore-controlling fault plane in the Shanhou mining area were investigated,and the regularities of enrichment and emplacement of ore body were summarized. The analysis shows that the Shanhou gold deposit was controlled by NE-NNE Zhaoping fault zone; the fault gouge developed in fault zone provides a barrier to ore-bearing hydrothermal solution,and the industrial ore body is all distributed within 40 m of footwall of main fault plane. The industrial ore body is mainly enriched in the NE positions of fault where the deep dips changed to flat dips,and shows the obvious regularity of NE lateral trending with angle around 75°. The stress analysis of fault in mineralization epoch showed that the ore-controlling structure presented the characteristics of righthanded rotation inverse-fault activity in mineralization epoch,and the host space tended to occur in NE regional tension positions where the dips become flat in the strike of fault,causing emplacement of ore body. It is thought by combining equal interval distribution of deposit with spatial variation of industrial ore body and orecontrolling fault structure that the Shanhou gold deposit recurred in regularity and the non-ore interval occurred in the ore body. Meanwhile,it is predicted that the favorable target area of prospecting lies in the areas of deep main fault plane with NE strike( > 30°) and the deep dips changing to flat dips in the Shanhou mining area,and the prospecting should be emphasized. The favorable deep mineralization prospect exists in middle Beibo mining area,where is the key area for future prospecting.
基金Projects(61173026,61373045,61202039)supported by the National Natural Science Foundation of ChinaProject(2012AA02A603)supported by the National High Technology Research and Development Program of China+1 种基金Projects(K5051223008,K5051223002)supported by the Fundamental Research Funds for the Central Universities of ChinaProject(513***103E)supported by the Pre-Research Project of the"Twelfth Five-Year-Plan"of China
文摘In multi-agent systems(MAS),finding agents which are able to service properly in an open and dynamic environment are the key issue in problem solving.However,it is difficult to find agent resources quickly and position agents accurately and complete the system integration by the keyword matching method,due to the lack of clear semantic information of the classical agent model.An semantic-based agent dynamic positioning mechanism was proposed to assist in the system dynamic integration.According to the semantic agent model and the description method,a two-stage process including the domain positioning stage and the service semantic matching positioning stage,was discussed.With this mechanism,proper agents that provide appropriate service to assign sub-tasks for task completion can be found quickly and accurately.Finally,the effectiveness of the positioning mechanism was validated through the in-depth performance analysis in the application of simulation experiments to the system dynamic integration.
基金Funded by the Communication System Project of Jiangsu Provincial Education Committee under grant No.JHB04010
文摘A fully integrated frequency synthesizer with low jitter and low power consumption in 0.18 μm CMOS (complementary metal-oxide semiconductor) technology is proposed in this paper.The frequency synthesizer uses a novel single-end gain-boosting charge pump, a differential coupled voltage controlled oscillator (VCO) and a dynamic logic phase/frequency detecor (PFD) to acquire low output jitter.The output frequency range of the frequency synthesizer is up to 1 200 MHz to 1 400 MHz for GPS (global position system) application.The post simulation results show that the phase noise of VCO is only 127.1 dBc/Hz at a 1 MHz offset and the Vp-p jitter of the frequency synthesizer output clock is 13.65 ps.The power consumption of the frequency synthesizer not including the divider is 4.8 mW for 1.8 V supply and it occupies a 0.8 mm×0.7 mm chip area.
文摘This paper introduces a design to improve the radiotherapy accuracy of gamma knife. In this design, sensor is used to collect respiratory parameters and tumor displacement (caused by human respiration) model is established through optimization modeling. At the same time, data are transferred to single chip microcomputer (SCM) system by pressure sensor and then stepping motor is controlled by SCM. Finally, the intelligent positioning bed is under the control of stepping motor. As a result, the intelligent positioning bed can move reverse to respiratory law. The experimental results showed that this method can reduce the influence of respiration on tumor displacement, improving the accuracy of intelligent positioning bed with simple circuit and low cost at the same time.
