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FOXBASE汉字录入自动切换技术的实现
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作者 张霖 章学光 孙晓珍 《安徽建筑工业学院学报(自然科学版)》 1996年第1期51-57,共7页
采用软件驻留技术,给FOXBASE添加一项新的功能,实现中西文信息录入自动切换技术,并给出一个应用实例。
关键词 输入状态 输入区 驻留
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FEM modeling of softened base metal in narrow-gap joint by CMT+P MIX welding procedure 被引量:2
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作者 舒凤远 吕耀辉 +4 位作者 刘玉欣 徐富家 孙哲 何鹏 徐滨士 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2014年第6期1830-1835,共6页
A required finite element method(FEM) model applicable for narrow gap CMT and CMT+P MIX welding was established based on the interactions between arc,base metal and filler metal.A novel method of simplifying wire f... A required finite element method(FEM) model applicable for narrow gap CMT and CMT+P MIX welding was established based on the interactions between arc,base metal and filler metal.A novel method of simplifying wire feeding pulses and heat input pulses was supposed under the conduction of equivalent input.The method together with composed double-ellipse heat sources was included in the model.The model was employed in the investigation of thermal cycling and the identification of the softened zone of AA7A52 base plates.Low-frequency behavior emerged in the form of low-cooling rate sects,which were not expected under experimental conditions.The softened zone including the quenched zone and averaging zone of the base plate was much wider internal the base plate than that close to the surfaces.The reliability of the predictions in thermal cycling was supported by infrared imaging test results of the thermal cycle process. 展开更多
关键词 cold metal transferring finite element method equivalent input low-cooling rate sects softened zone
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Urban Economic Cluster Template and Its Dynamics of Beijing,China 被引量:3
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作者 YANG Zhenshan LIANG Jinshe CAI Jianming 《Chinese Geographical Science》 SCIE CSCD 2014年第6期740-750,共11页
Economic clusters have been a central focus of current urban and regional research, policies and practices. However, a methodology to identify and analyze policy-relevant economic cluster dynamics is still not well de... Economic clusters have been a central focus of current urban and regional research, policies and practices. However, a methodology to identify and analyze policy-relevant economic cluster dynamics is still not well developed. Based on input-output(I-O) data of 1987, 1992, 1997, 2002 and 2007 of Beijing, this article presents an adapted principle component analysis for identifying the evolution of local economic cluster patterns. This research addresses the changes of economic interaction of industries with complementary and common activities over time. The identified clusters provide an insight into the reality of economic development in a diversifying urban economy: the increasing importance of services and the growing interaction between service and manufacturing industries. Our method therefore provides the analysts with a better understanding of the emergence, disappearance and development of economic clusters citywide. The results could be used to assist monitoring urban economic development and designing more practical urban economic strategies. 展开更多
关键词 economic clusters industrial linkages urban economic dynamics functional analysis INPUT-OUTPUT BEIJING China
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Spatial Disparity and Efficiency of Science and Technology Resources in China 被引量:2
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作者 WANG Bei LIU Weidong +1 位作者 LU Dadao ZHANG Jianbo 《Chinese Geographical Science》 SCIE CSCD 2012年第6期730-741,共12页
In the knowledge economy era,science and technology(S&T) resources are getting more and more important in shaping regional competiveness and building regional innovation capacity.As such,the spatial distribution o... In the knowledge economy era,science and technology(S&T) resources are getting more and more important in shaping regional competiveness and building regional innovation capacity.As such,the spatial distribution of S&T resources is a key to understanding regional development and disparities.By designing an input-output indicator system,this paper develops an evaluation model to examine the spatial distribution of S&T resources in China and assess their spatial efficiency.Moreover,the paper tries to explain spatial differences in the efficiency of S&T resources in China.Major findings are:1) the input and output of S&T resources in China shows a clear T-shaped spatial structure,i.e.,concentrated mainly in the coastal region and along the Changjiang(Yangtze) River;2) the efficiency of S&T resources in China displays strong spatial disparities,with the level of efficiency descending from the east to the west while high efficiency appearing in only several clusters;3) the utilization rates of S&T resources in most provinces are quite low,resulting in low efficiency of S&T resources allocation.The paper suggests that the utilization rate of S&T resources should be raised and the commercialization of S&T outputs should be enhanced to improve the efficiency of S&T resources in China. 展开更多
关键词 science and technology resources resources spatial allocation resources-utilization efficiency China
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Economic impacts of the Natural Forest Protection Program in Yunnan Province, China:an input-output analysis 被引量:1
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作者 Wang Zanxin Margaret M. Calderon 《Ecological Economy》 2008年第1期66-73,共8页
The paper assesses the economic impacts of the natural forest protection program (NFPP) on the economy of Yunnan Province, China.in terms of gross output, value added,employment, and household income. An inputoutput... The paper assesses the economic impacts of the natural forest protection program (NFPP) on the economy of Yunnan Province, China.in terms of gross output, value added,employment, and household income. An inputoutput model is developed to estimate NFPP's economic impacts by means of backward linkages in the forestry sector and logging and haudage sector. It is found than the NFPP has positive impacts on gross output, value added and houschold income in the initial year, but has significantly negative impacts on the regional economy in the following years as the investment decreases. 展开更多
关键词 NFPP Input-output analysis Economic inpacts
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Sediment Load of Asian Rivers flowing into the Oceans and their Regional Variation
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作者 刘曙光 郑永来 +1 位作者 诸葛正技 李从先 《Marine Science Bulletin》 CAS 2002年第1期61-70,共10页
Study of the major Asian rivers discharge to the ocean reveals variations of their water discharges and sediment loads, and local characteristics of river sediment concentrations. On the basis of this, the Asian river... Study of the major Asian rivers discharge to the ocean reveals variations of their water discharges and sediment loads, and local characteristics of river sediment concentrations. On the basis of this, the Asian rivers fall into three regions, including Eurasia Arctic, East Asia, Southeast and South Asia Regions. The Eurasia Arctic Region is characterized by the lowest sediment concentration and load, while the East Asia Region is of the highest sediment concentration and higher sediment load, and the South-East and South Asia Region yields higher sediment concentration and highest sediment load.The sediment loads of these regions are mainly controlled by climate, geomorphology and tectonic activity. The Eurasia Arctic rivers with large basin areas and water discharge, drain low relief which consists of tundra sediment, thus causing the lowest sediment load. The East Asia rivers with small basin areas and lowest water discharges, drain extensive loess plateau, and transport most erodible loess material, which results in highest sediment concentration. The SE and South Asia rivers originating from the Tibet Plateau have large basin areas and the largest water discharges because of the Summer Monsoon and high rainfall influence, causing the highest sediment load.In Asia, tectonic motion of the Tibet Plateau plays an important role. Those large rivers originating from the Tibet Plateau transport about 50% of the world river sediment load to ocean annually, forming large estuaries and deltas, and consequently exerting a great influence on sedimentation in the coastal zone and shelves. 展开更多
关键词 ASIA river flowing into the ocean sediment load water discharge
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未来的智能锁
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作者 叶晴 汤孝利 《聪明泉(小学1-3年级)》 2012年第6期31-31,共1页
一天,我去同学家玩,看见她家门上装了一把新锁,模样怪怪的:这把锁是正方形的,左边有一个黑色的板,上面写着"指导纹验证区";在它边上,有几个按键,上面写着"密码输入区";左下角有一个小灯;右上角有一个照相机上拍照... 一天,我去同学家玩,看见她家门上装了一把新锁,模样怪怪的:这把锁是正方形的,左边有一个黑色的板,上面写着"指导纹验证区";在它边上,有几个按键,上面写着"密码输入区";左下角有一个小灯;右上角有一个照相机上拍照用的小孔;左上角有一个投影仪上的投影孔似的东西。我很好奇,就把手指按在了"指纹验证区"这行字下的黑色板上面。这时,传来了一个照相机按快门的声音,接着左下角的小灯变红了,窗户关牢了。 展开更多
关键词 智能锁 指纹验证 照相机 输入区 正方形 密码 投影仪 机器手 上角 上面
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Biomarker evidence for changes in terrestrial organic matter input into the Yellow Sea mud area during the Holocene 被引量:8
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作者 WU Peng XIAO XiaoTong +4 位作者 TAO ShuQin YANG ZuoSheng ZHANG HaiLong LI Li ZHAO MeiXuna 《Science China Earth Sciences》 SCIE EI CAS CSCD 2016年第6期1216-1224,共9页
We present lipid biomarker records of two cores (ZYI and ZY3) from the central South Yellow Sea mud area to investigate the changes in sources and transport processes of the sedimentary organic matter (OM) through... We present lipid biomarker records of two cores (ZYI and ZY3) from the central South Yellow Sea mud area to investigate the changes in sources and transport processes of the sedimentary organic matter (OM) throughout the Holocene. Based on the analysis of marine biomarker content (EPB (Phytoplankton Biomarker, total content of brassicasterol, dinosterol and C37-alkenones) and crenarchaeol), and terrestrial biomarkers (En-alkanols and brGDGTs) as well as TMBR' and BIT index values, the marine organic matter (MOM) and terrestrial organic matter (TOM) deposition history was reconstructed. Changes in TOM and MOM were related to variations in land vegetation density and marine productivity, as well as transport processes dominated by the oceanic circulation system. The marine biomarker contents from the South Yellow Sea have generally in- creased throughout the Holocene, indicating that the increased MOM contents were mainly controlled by the strengthening of the circulation system. The terrestrial biomarkers, on the other hand, were more variable, indicating more complex influence of TOM burial in the Yellow Sea. During the Early Holocene (7200-6000 cal yr BP), the moderate TOM input revealed by the terrestrial proxy records may result from abundant land source supply by strong river transport despite the lack of transport via circulation system. The Mid-Holocene (6000-3000 cal yr BP) was characterized by decreased terrestrial biomarker contents. The balance between the decrease in land source supply and increase of transportation by the current system of the TOM resulted in the lower but stable contents of TOM. During the Late Holocene (3000 cal yr BP to present), the TOM deposition in the South Yellow Sea increased as the current system was further enhanced and thus transported more TOM to the central South Yellow Sea, although the land supply of TOM was further reduced. 展开更多
关键词 South Yellow Sea HOLOCENE BIOMARKER Marine organic matter Terrestrial organic matter
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Regional Impact of Cyclone Sidr in Bangladesh: A Multi-Sector Analysis 被引量:3
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作者 Afsana Haque Sarwar Jahan 《International Journal of Disaster Risk Science》 SCIE CSCD 2016年第3期312-327,共16页
This research investigates the impact of cyclone Sidr on six regional economic systems of Bangladesh. The study uses secondary data on direct damages and corresponding changes in consumer spending and public/private i... This research investigates the impact of cyclone Sidr on six regional economic systems of Bangladesh. The study uses secondary data on direct damages and corresponding changes in consumer spending and public/private investment expenditure. It employs input–output modeling and simulates the changes in national and regional output,income, and employment due to cyclone Sidr. Our findings indicate that coastal regions of Bangladesh—Barisal,Chittagong, and Khulna—are more vulnerable to cyclone disaster than are other parts of the country. The cycloneinduced loss of output is highest for Chittagong Division and income and employment losses are greatest in Barisal Division. The most affected sectors are housing services,agriculture, construction, and industrial activities. But sectoral losses vary widely across the regions. This research also finds that the present state of consumer spending and investment expenditure is not great enough to handle cyclone-induced output, income, and employment losses. It argues that investment decisions must consider regional patterns of output, income, and employment losses in different economic sectors to ensure cyclone-resilient development in Bangladesh. 展开更多
关键词 BANGLADESH Cyclone Sidr Input-output model Regional impact Sectoral impact
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Influence of Control Parameters on the Competition Between Spiral Waves and Target Waves
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作者 钱郁 李伟 +2 位作者 黄晓东 弭元元 张朝阳 《Communications in Theoretical Physics》 SCIE CAS CSCD 2012年第8期307-312,共6页
In this paper we systematically investigate the influence of control parameters on the competition results between spiral waves and target waves. Driving frequency f , amplitude A and injection area n of the input sig... In this paper we systematically investigate the influence of control parameters on the competition results between spiral waves and target waves. Driving frequency f , amplitude A and injection area n of the input signals are three important parameters and the competition results between spiral waves and target waves are influenced by these three parameters remarkably. Based on these understandings we can control spiral waves effectively by suitable combination these parameters to generate faster target waves. And the effective controllable parameter regions are also studied. 展开更多
关键词 spiral wave and target wave COMPETITION controllable parameter region
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Derivation and analysis on the analytical structure of interval type-2 fuzzy controller with two nonlinear fuzzy sets for each input variable
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作者 Bin-bin LEI Xue-chao DUAN +1 位作者 Hong BAO Qian XU 《Frontiers of Information Technology & Electronic Engineering》 SCIE EI CSCD 2016年第6期587-602,共16页
Type-2 fuzzy controllers have been mostly viewed as black-box function generators. Revealing the analytical structure of any type-2 fuzzy controller is important as it will deepen our understanding of how and why a ty... Type-2 fuzzy controllers have been mostly viewed as black-box function generators. Revealing the analytical structure of any type-2 fuzzy controller is important as it will deepen our understanding of how and why a type-2 fuzzy controller functions and lay a foundation for more rigorous system analysis and design. In this study, we derive and analyze the analytical structure of an interval type-2 fuzzy controller that uses the following identical elements: two nonlinear interval type-2 input fuzzy sets for each variable, four interval type-2 singleton output fuzzy sets, a Zadeh AND operator, and the Karnik-Mendel type reducer. Through dividing the input space of the interval type-2 fuzzy controller into 15 partitions, the input-output relationship for each local region is derived. Our derivation shows explicitly that the controller is approximately equivalent to a nonlinear proportional integral or proportional differential controller with variable gains. Furthermore, by comparing with the analytical structure of its type-1 counterpart, potential advantages of the interval type-2 fuzzy controller are analyzed. Finally, the reliability of the analysis results and the effectiveness of the interval type-2 fuzzy controller are verified by a simulation and an experiment. 展开更多
关键词 Interval type-2 fuzzy controller Analytical structure Karnik-Mendel type reducer
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