by using the method of literature, questionnaire and mathematical statistics and comparative analysis and ?research method of sichuan university high level survey of the Track and field team, sichuan university high l...by using the method of literature, questionnaire and mathematical statistics and comparative analysis and ?research method of sichuan university high level survey of the Track and field team, sichuan university high level Track and field team and the analysis of existing problems and research, in order to sichuan university of high level Track and field teams development to provide the reference.展开更多
In 1929, I was born in Shanghai. I graduated from the former Hsiang Ya Medical College (a Yale-affdiated medical school in China before Liberation in 1949, and the predecessor of today’s Hunan Medical University) in ...In 1929, I was born in Shanghai. I graduated from the former Hsiang Ya Medical College (a Yale-affdiated medical school in China before Liberation in 1949, and the predecessor of today’s Hunan Medical University) in 1952. My aspiration to be a clinical doctor was strongly influenced by my father Sophie (his pen name) whereas my devotion for all my life to neuro-anatomy resulted from the interaction between the mandatory system of work assignment by the State and my personal selfdevelopment. In the year of my graduation, the Ministry of Public Health under the National Military Commission was in need of a human anatomy lecturer and asked its civil counterpart to select a nominee for the vacancy. At the time, Ihad chosen basic medical research as my career and anatomy was definitely not one of my options, nor was any of my classmates in favor of it. However, the solution to this issue was simple enough: the展开更多
A magnetic field sensor with a magnetic fluid(MF)-coated intermodal interferometer is proposed and experimentally demonstrated. The interferometer is formed by sandwiching a segment of single mode fiber(SMF) between a...A magnetic field sensor with a magnetic fluid(MF)-coated intermodal interferometer is proposed and experimentally demonstrated. The interferometer is formed by sandwiching a segment of single mode fiber(SMF) between a segment of multi-mode fiber(MMF) and a spherical structure. It can be considered as a cascade of the traditional SMF-MMF-SMF structure and MMF-SMF-sphere structure. The transmission spectral characteristics change with the variation of applied magnetic field. The experimental results exhibit that the magnetic field sensitivities for wavelength and transmission loss are 0.047 nm/m T and 0.215 d B/m T for the interference dip around 1 535.36 nm. For the interference dip around 1548.41 nm,the sensitivities are 0.077 nm/m T and 0.243 d B/m T. Simultaneous measurement can be realized according to the different spectral responses.展开更多
The major importance of forests is critical to the survival on planet Earth. Forests are threatened by a lot of dangers and all of us have to contribute to the fight for their survival. The methodology of school resea...The major importance of forests is critical to the survival on planet Earth. Forests are threatened by a lot of dangers and all of us have to contribute to the fight for their survival. The methodology of school research on pine woods which is described below, aims to cultivate more sensitive, educated and activated students, by accordingly specialized teachers who are going to organize the educational background, also to decide techniques and materials for the easiest and most effective learning, for the cultivation of values, attitudes and friendly behaviors towards forests. The suggested methodology is based on the findings of a European Comenius Program and two Programs of Environmental Education. The research usually takes place in a pine land, by using a worksheet as experimental tool, and focuses on the vitality of the trees, the biodiversity, the effects of pollution and other cultural elements related to the pine bio-community. There is also a lot of informative discussion and research over cultural, social and economical factors with locals and specialists.展开更多
The Taklamakan Desert is China's largest and the world's second-largest shifting desert.Desertification prevention and control here is considered the hardest of the hard nuts in the Three-North Shelterbelt For...The Taklamakan Desert is China's largest and the world's second-largest shifting desert.Desertification prevention and control here is considered the hardest of the hard nuts in the Three-North Shelterbelt Forestry Program.On November 28,2024,with the planting of the final rose sapling on the desert's southern edge,a 3,046-kilometer green protective belt was completed,encircling all 340,000 square kilometers of sand.This has created the world's longest ecological security barrier around a desert,stretching approximately three times the straight-line distance between Beijing and Shanghai.展开更多
As an important branch of human geography, transportation geography has experienced three periods of evolution: foundation, systematization, and rapid development of the discipline. It has gradually become a relativel...As an important branch of human geography, transportation geography has experienced three periods of evolution: foundation, systematization, and rapid development of the discipline. It has gradually become a relatively mature discipline. During the period 1930– 1980, the development of transportation geography consisted mainly of the publication of theoretical texts. During 1980–2000, it gradually became a systematic discipline. Since the start of the 21 st century, transportation geography has focused mainly on exploring the impacts of transportation on socio-economic development. Currently, studies on transportation geography have led to significant developments in a number of areas, including transportation theory, facility distribution and planning, transportation flows and network analysis, evaluation of transport modes, transportation planning, and simulation and assessment of urban transportation. Such studies have also enriched human geography research, provided a wider geographical overview and elucidated the development mechanism of transportation, as well as helped to understand the impacts of transport development on socio-economic systems. Some findings obtained by geographers have been widely used in transportation geography and related fields, including the four basic laws of transportation generation, the hub–spoke mode of transport organization, the subordinating and guiding functions of transportation on socio-economic development, regional transport dominance measures, accessibility measures, and spatial organization of port systems.展开更多
Over the years SLA research has developed rapidly and continued to do so. There has been an enormous amount of empirical research directed at describing the characteristics of L2 learner language and how the change as...Over the years SLA research has developed rapidly and continued to do so. There has been an enormous amount of empirical research directed at describing the characteristics of L2 learner language and how the change as acquisition takes place. There has also been growing interest in theory construction. This article mainly probes into five kinds of its developments.展开更多
Purpose:In order to annotate the semantic information and extract the research level information of research papers,we attempt to seek a method to develop an information extraction system.Design/methodology/approach:S...Purpose:In order to annotate the semantic information and extract the research level information of research papers,we attempt to seek a method to develop an information extraction system.Design/methodology/approach:Semantic dictionary and conditional random field model(CRFM)were used to annotate the semantic information of research papers.Based on the annotation results,the research level information was extracted through regular expression.All the functions were implemented on Sybase platform.Findings:According to the result of our experiment in carbon nanotube research,the precision and recall rates reached 65.13%and 57.75%,respectively after the semantic properties of word class have been labeled,and F-measure increased dramatically from less than 50%to60.18%while added with semantic features.Our experiment also showed that the information extraction system for research level(IESRL)can extract performance indicators from research papers rapidly and effectively.Research limitations:Some text information,such as that of format and chart,might have been lost due to the extraction processing of text format from PDF to TXT files.Semantic labeling on sentences could be insufficient due to the rich meaning of lexicons in the semantic dictionary.Research implications:The established system can help researchers rapidly compare the level of different research papers and find out their implicit innovation values.It could also be used as an auxiliary tool for analyzing research levels of various research institutions.Originality/value:In this work,we have successfully established an information extraction system for research papers by a revised semantic annotation method based on CRFM and the semantic dictionary.Our system can analyze the information extraction problem from two levels,i.e.from the sentence level and noun(phrase)level of research papers.Compared with the extraction method based on knowledge engineering and that on machine learning,our system shows advantages of the both.展开更多
文摘by using the method of literature, questionnaire and mathematical statistics and comparative analysis and ?research method of sichuan university high level survey of the Track and field team, sichuan university high level Track and field team and the analysis of existing problems and research, in order to sichuan university of high level Track and field teams development to provide the reference.
文摘In 1929, I was born in Shanghai. I graduated from the former Hsiang Ya Medical College (a Yale-affdiated medical school in China before Liberation in 1949, and the predecessor of today’s Hunan Medical University) in 1952. My aspiration to be a clinical doctor was strongly influenced by my father Sophie (his pen name) whereas my devotion for all my life to neuro-anatomy resulted from the interaction between the mandatory system of work assignment by the State and my personal selfdevelopment. In the year of my graduation, the Ministry of Public Health under the National Military Commission was in need of a human anatomy lecturer and asked its civil counterpart to select a nominee for the vacancy. At the time, Ihad chosen basic medical research as my career and anatomy was definitely not one of my options, nor was any of my classmates in favor of it. However, the solution to this issue was simple enough: the
基金supported by the National Natural Science Foundation of China(No.61475118)the National High-Tech Research and Development Program of China(863 Program)(No.2013AA014201)the Opened Fund of the State Key Laboratory on Integrated Optoelectronics(No.IOSKL2015KF06)
文摘A magnetic field sensor with a magnetic fluid(MF)-coated intermodal interferometer is proposed and experimentally demonstrated. The interferometer is formed by sandwiching a segment of single mode fiber(SMF) between a segment of multi-mode fiber(MMF) and a spherical structure. It can be considered as a cascade of the traditional SMF-MMF-SMF structure and MMF-SMF-sphere structure. The transmission spectral characteristics change with the variation of applied magnetic field. The experimental results exhibit that the magnetic field sensitivities for wavelength and transmission loss are 0.047 nm/m T and 0.215 d B/m T for the interference dip around 1 535.36 nm. For the interference dip around 1548.41 nm,the sensitivities are 0.077 nm/m T and 0.243 d B/m T. Simultaneous measurement can be realized according to the different spectral responses.
文摘The major importance of forests is critical to the survival on planet Earth. Forests are threatened by a lot of dangers and all of us have to contribute to the fight for their survival. The methodology of school research on pine woods which is described below, aims to cultivate more sensitive, educated and activated students, by accordingly specialized teachers who are going to organize the educational background, also to decide techniques and materials for the easiest and most effective learning, for the cultivation of values, attitudes and friendly behaviors towards forests. The suggested methodology is based on the findings of a European Comenius Program and two Programs of Environmental Education. The research usually takes place in a pine land, by using a worksheet as experimental tool, and focuses on the vitality of the trees, the biodiversity, the effects of pollution and other cultural elements related to the pine bio-community. There is also a lot of informative discussion and research over cultural, social and economical factors with locals and specialists.
文摘The Taklamakan Desert is China's largest and the world's second-largest shifting desert.Desertification prevention and control here is considered the hardest of the hard nuts in the Three-North Shelterbelt Forestry Program.On November 28,2024,with the planting of the final rose sapling on the desert's southern edge,a 3,046-kilometer green protective belt was completed,encircling all 340,000 square kilometers of sand.This has created the world's longest ecological security barrier around a desert,stretching approximately three times the straight-line distance between Beijing and Shanghai.
基金National Natural Science Foundation of China,No.41171107No.41371143
文摘As an important branch of human geography, transportation geography has experienced three periods of evolution: foundation, systematization, and rapid development of the discipline. It has gradually become a relatively mature discipline. During the period 1930– 1980, the development of transportation geography consisted mainly of the publication of theoretical texts. During 1980–2000, it gradually became a systematic discipline. Since the start of the 21 st century, transportation geography has focused mainly on exploring the impacts of transportation on socio-economic development. Currently, studies on transportation geography have led to significant developments in a number of areas, including transportation theory, facility distribution and planning, transportation flows and network analysis, evaluation of transport modes, transportation planning, and simulation and assessment of urban transportation. Such studies have also enriched human geography research, provided a wider geographical overview and elucidated the development mechanism of transportation, as well as helped to understand the impacts of transport development on socio-economic systems. Some findings obtained by geographers have been widely used in transportation geography and related fields, including the four basic laws of transportation generation, the hub–spoke mode of transport organization, the subordinating and guiding functions of transportation on socio-economic development, regional transport dominance measures, accessibility measures, and spatial organization of port systems.
文摘Over the years SLA research has developed rapidly and continued to do so. There has been an enormous amount of empirical research directed at describing the characteristics of L2 learner language and how the change as acquisition takes place. There has also been growing interest in theory construction. This article mainly probes into five kinds of its developments.
基金supported by the National Social Science Foundation of China(Grant No.12CTQ032)
文摘Purpose:In order to annotate the semantic information and extract the research level information of research papers,we attempt to seek a method to develop an information extraction system.Design/methodology/approach:Semantic dictionary and conditional random field model(CRFM)were used to annotate the semantic information of research papers.Based on the annotation results,the research level information was extracted through regular expression.All the functions were implemented on Sybase platform.Findings:According to the result of our experiment in carbon nanotube research,the precision and recall rates reached 65.13%and 57.75%,respectively after the semantic properties of word class have been labeled,and F-measure increased dramatically from less than 50%to60.18%while added with semantic features.Our experiment also showed that the information extraction system for research level(IESRL)can extract performance indicators from research papers rapidly and effectively.Research limitations:Some text information,such as that of format and chart,might have been lost due to the extraction processing of text format from PDF to TXT files.Semantic labeling on sentences could be insufficient due to the rich meaning of lexicons in the semantic dictionary.Research implications:The established system can help researchers rapidly compare the level of different research papers and find out their implicit innovation values.It could also be used as an auxiliary tool for analyzing research levels of various research institutions.Originality/value:In this work,we have successfully established an information extraction system for research papers by a revised semantic annotation method based on CRFM and the semantic dictionary.Our system can analyze the information extraction problem from two levels,i.e.from the sentence level and noun(phrase)level of research papers.Compared with the extraction method based on knowledge engineering and that on machine learning,our system shows advantages of the both.
