Group A streptococcus （GAS） causes a wide range of diseases in the human population. GAS diseases are more common in children than in adults, with clinical manifestations ranging from pharyngitis and impetigo to inv...Group A streptococcus （GAS） causes a wide range of diseases in the human population. GAS diseases are more common in children than in adults, with clinical manifestations ranging from pharyngitis and impetigo to invasive infections and post streptococcal sequelae, such as acute rheumatic fever and acute post-streptococcal glomerulonephritis[1]. GAS harbors a host of virulence factors that contribute to its complex pathogenicity and differences in the disease severity and frequency. M protein, one of the major virulence factors, is encoded by the emm gene induces a type of specific host immune response and confers antiphagocytic properties.展开更多
Objective.To understand and analyze the mental health status of key Senior School Students at grade 3 in Haidian District of Bey ing and Senior Three Students in General Schools,so as to provide basis for mental healt...Objective.To understand and analyze the mental health status of key Senior School Students at grade 3 in Haidian District of Bey ing and Senior Three Students in General Schools,so as to provide basis for mental health education and psychological intervention.Methods.A total of 263 senior three students were randomly selected from a general school and two key school in Haidian District of Beijing.A questionnaire survey was conducted using the Mental Health Scale for Chinese Middle School Students(MSSMHS).Results.Of the 260 students surveyed,54.2%had mental health problems,36.5%had mild problems,8.8%had moderate problems,and 0.5%had slightly and deeply serious problems.The first three factors about examined rates of factors of mental health were anxiety,learning and interpersonal relationship.The detection rates accounted for 23.5%,23.1%and 18.8%respectively.There was no significant difference in the scores of each factor between key and ordinary middle school students(P>0.05).The scores of interpersonal,depression,anxiety and emotional factors of middle school girls were higher than those of boys,with statistical significance(P<0.05)?Conclusion.There are some mental health problems among senior students at grade 3 in Haidian District of Beijing,and female students9 are serious.Schools,families and societies should pay attention to this problem and strengthen mental health education with a focused goal.展开更多
The first time I have learnt the name Wu Qing was in a host show, "Close-Up" on CCTV-4. She is a professor of Beijing Foreign Studies Univer-sity, and moreover she is the daughter of one of Chinese literary ...The first time I have learnt the name Wu Qing was in a host show, "Close-Up" on CCTV-4. She is a professor of Beijing Foreign Studies Univer-sity, and moreover she is the daughter of one of Chinese literary giants, Ms. Bing Xin. I was immediately fascinated not展开更多
YANGROU Hutong is 600 years old.Located in the Xisi area of Beijing’s Xicheng District,the area was originally a trading market for cattle,which usually ended up in the imperial kitchen.But with the name Yangrou(mean...YANGROU Hutong is 600 years old.Located in the Xisi area of Beijing’s Xicheng District,the area was originally a trading market for cattle,which usually ended up in the imperial kitchen.But with the name Yangrou(meaning mutton),butchers and mutton stores replaced the cattle traders starting in the Ming Dynasty (1368-1644).In those days,cries of sellers and the pungent smell of mutton overwhelmed every passerby. But today,those smells and sounds are展开更多
NIUJIE,or Ox Street,is situated in the southwest of Beijing’s Xicheng District. The avenue is best known for Niujie Mosque,the city’s oldest and largest mosque,catering to both tourists and the Muslim population liv...NIUJIE,or Ox Street,is situated in the southwest of Beijing’s Xicheng District. The avenue is best known for Niujie Mosque,the city’s oldest and largest mosque,catering to both tourists and the Muslim population living in its vicinity. The mosque was first built in 996 by an imam named Nasruddin,the son of an Arab imam who came to China to preach the Islamic faith.It was rebuilt in 1442 during the Ming Dynasty(1368-展开更多
3D geological modeling, one of the most important applications in geosciences of 3D GIS, forms the basis and is a prerequisite for visualized representation and analysis of 3D geological data. Computer modeling of geo...3D geological modeling, one of the most important applications in geosciences of 3D GIS, forms the basis and is a prerequisite for visualized representation and analysis of 3D geological data. Computer modeling of geological faults in 3D is currently a topical research area. Structural modeling techniques of complex geological entities contain- ing reverse faults are discussed and a series of approaches are proposed. The geological concepts involved in computer modeling and visualization of geological fault in 3D are explained, the type of data of geological faults based on geo- logical exploration is analyzed, and a normative database format for geological faults is designed. Two kinds of model- ing approaches for faults are compared: a modeling technique of faults based on stratum recovery and a modeling tech- nique of faults based on interpolation in subareas. A novel approach, called the Unified Modeling Technique for stratum and fault, is presented to solve the puzzling problems of reverse faults, syn-sedimentary faults and faults terminated within geological models. A case study of a fault model of bed rock in the Beijing Olympic Green District is presented in order to show the practical result of this method. The principle and the process of computer modeling of geological faults in 3D are discussed and a series of applied technical proposals established. It strengthens our profound compre- hension of geological phenomena and the modeling approach, and establishes the basic techniques of 3D geological modeling for practical applications in the field of geosciences.展开更多
Beijing Municipal Administrative Center(Beijing MC)in Tongzhou District has inherited the non-capital core functions of Beijing’s central urban area,and its rapid construction and development urgently require a scien...Beijing Municipal Administrative Center(Beijing MC)in Tongzhou District has inherited the non-capital core functions of Beijing’s central urban area,and its rapid construction and development urgently require a scientific understanding of the pattern of land use evolution in the region.This paper analyzes the pattern of land use evolution in Tongzhou District over the past 40 years,from 1980 to 2020.According to the historical evolutionary characteristics of land use and urban development planning goals,combined with the driving factors of cultural tourism development,the Future Land-use Simulation(FLUS)model is used to simulate the spatial distribution of land use in Beijing MC(Tongzhou District)in 2035 under three scenarios of urbanization acceleration,deceleration and sustainable development.The results show three major trends.(1)Beijing MC(Tongzhou District)is dominated by urban development and construction.During the high-speed urbanization stage from 1980 to 2010,the urban expansion pattern of“along the Sixth Ring Road and along the Grand Canal”was formed.During the low-speed urbanization stage from 2010 to 2020,the land distribution was stable,and Tongzhou District formed a pattern of urban-rural differentiation and land intensification from northwest to southeast.As a typical area of Tongzhou District’s urbanization,Beijing MC has the same characteristics of the temporal and spatial evolution as Tongzhou as a whole.(2)By 2035,there are significant differences in land use among the three scenarios with respect to the magnitude of change and spatial distribution.The area and distribution of ecological land under the urban sustainable development scenario are optimal,which is conducive to the realization of sustainable urban development.In analyzing the degree of conformity with the three Beijing MC zoning plans,the prediction simulation under the sustainable development scenario is highly consistent with the land use of the“Beijing Municipal Administrative Center Regulatory Detailed Planning(Block Level)(2016–2035)”(hereinafter referred to as“Planning”)issued by the municipal government.However,there are certain deviations between the simulation predictions in the cultural tourism function area and the livable living scenery area and the corresponding“Planning”expectations.During the urban construction process,the internal ecological land area still needs to be increased.(3)Tongzhou District may lack a close connection between the urban and rural areas in the southeast.Potential risks such as the imbalance in the development of northern and southern townships require further attention in the development process.The prediction and simulation results of the model can provide certain data and methodological support for the construction of a harmonious and livable city in Beijing MC(Tongzhou District).展开更多
Beijing's green belt policy is three-fold:fi rstly to protect farmers' interests during urbanization, secondly to control the urban expansion, and thirdly to improve the ecological environment. The planning of...Beijing's green belt policy is three-fold:fi rstly to protect farmers' interests during urbanization, secondly to control the urban expansion, and thirdly to improve the ecological environment. The planning of industrial land for green belts has thus emerged as a way to help achieve these goals during Beijing's urban growth from morphological, social, and economic perspectives. First of all, this paper introduces the implementation mechanisms of the planning of industrial land for green belts, from which it abstracts a model of land adjustment and urban-rural cooperation. Secondly, the paper analyzes the effects and current dilemmas during the implementation of the planning of industrial land for green belts. Thirdly, results are compared with other spontaneously developed industries in the rural-urban fringe area to illustrate the changes brought about by the planning. Finally, the paper proposes three measures for future improvement, including balancing the industrial land use quotas between different townships, conducting cooperative land adjustment, and encouraging spontaneously developed industrial projects.展开更多
Located in the northwest of Beijing,Haidian District has residents from all 56 ethnic groups in China, making it the most ethnically diverse area of Beijing. In June 1954, Haidian, the name of an administrative distri...Located in the northwest of Beijing,Haidian District has residents from all 56 ethnic groups in China, making it the most ethnically diverse area of Beijing. In June 1954, Haidian, the name of an administrative district, officially appeared on the map. Over the last 20 years, the area has developed from an outskirt of the city into a modern district with science and technology,educa- tion and culture as its core industries. Zhongguancun is a very famous place in Haidian District,which is renowned as the"展开更多
文摘Group A streptococcus （GAS） causes a wide range of diseases in the human population. GAS diseases are more common in children than in adults, with clinical manifestations ranging from pharyngitis and impetigo to invasive infections and post streptococcal sequelae, such as acute rheumatic fever and acute post-streptococcal glomerulonephritis[1]. GAS harbors a host of virulence factors that contribute to its complex pathogenicity and differences in the disease severity and frequency. M protein, one of the major virulence factors, is encoded by the emm gene induces a type of specific host immune response and confers antiphagocytic properties.
文摘Objective.To understand and analyze the mental health status of key Senior School Students at grade 3 in Haidian District of Bey ing and Senior Three Students in General Schools,so as to provide basis for mental health education and psychological intervention.Methods.A total of 263 senior three students were randomly selected from a general school and two key school in Haidian District of Beijing.A questionnaire survey was conducted using the Mental Health Scale for Chinese Middle School Students(MSSMHS).Results.Of the 260 students surveyed,54.2%had mental health problems,36.5%had mild problems,8.8%had moderate problems,and 0.5%had slightly and deeply serious problems.The first three factors about examined rates of factors of mental health were anxiety,learning and interpersonal relationship.The detection rates accounted for 23.5%,23.1%and 18.8%respectively.There was no significant difference in the scores of each factor between key and ordinary middle school students(P>0.05).The scores of interpersonal,depression,anxiety and emotional factors of middle school girls were higher than those of boys,with statistical significance(P<0.05)?Conclusion.There are some mental health problems among senior students at grade 3 in Haidian District of Beijing,and female students9 are serious.Schools,families and societies should pay attention to this problem and strengthen mental health education with a focused goal.
文摘The first time I have learnt the name Wu Qing was in a host show, "Close-Up" on CCTV-4. She is a professor of Beijing Foreign Studies Univer-sity, and moreover she is the daughter of one of Chinese literary giants, Ms. Bing Xin. I was immediately fascinated not
文摘YANGROU Hutong is 600 years old.Located in the Xisi area of Beijing’s Xicheng District,the area was originally a trading market for cattle,which usually ended up in the imperial kitchen.But with the name Yangrou(meaning mutton),butchers and mutton stores replaced the cattle traders starting in the Ming Dynasty (1368-1644).In those days,cries of sellers and the pungent smell of mutton overwhelmed every passerby. But today,those smells and sounds are
文摘NIUJIE,or Ox Street,is situated in the southwest of Beijing’s Xicheng District. The avenue is best known for Niujie Mosque,the city’s oldest and largest mosque,catering to both tourists and the Muslim population living in its vicinity. The mosque was first built in 996 by an imam named Nasruddin,the son of an Arab imam who came to China to preach the Islamic faith.It was rebuilt in 1442 during the Ming Dynasty(1368-
基金Project 2001AA135170 supported by the National High-Tech Research and Development (863) Program of China and 06ZR14031 by the Natural ScienceFoundation of Shanghai Municipality
文摘3D geological modeling, one of the most important applications in geosciences of 3D GIS, forms the basis and is a prerequisite for visualized representation and analysis of 3D geological data. Computer modeling of geological faults in 3D is currently a topical research area. Structural modeling techniques of complex geological entities contain- ing reverse faults are discussed and a series of approaches are proposed. The geological concepts involved in computer modeling and visualization of geological fault in 3D are explained, the type of data of geological faults based on geo- logical exploration is analyzed, and a normative database format for geological faults is designed. Two kinds of model- ing approaches for faults are compared: a modeling technique of faults based on stratum recovery and a modeling tech- nique of faults based on interpolation in subareas. A novel approach, called the Unified Modeling Technique for stratum and fault, is presented to solve the puzzling problems of reverse faults, syn-sedimentary faults and faults terminated within geological models. A case study of a fault model of bed rock in the Beijing Olympic Green District is presented in order to show the practical result of this method. The principle and the process of computer modeling of geological faults in 3D are discussed and a series of applied technical proposals established. It strengthens our profound compre- hension of geological phenomena and the modeling approach, and establishes the basic techniques of 3D geological modeling for practical applications in the field of geosciences.
基金The National Natural Science Foundation of China(31470518)The Project Supported by Institute of Culture and Tourism Development of Beijing Technology and Business University(202106104)。
文摘Beijing Municipal Administrative Center(Beijing MC)in Tongzhou District has inherited the non-capital core functions of Beijing’s central urban area,and its rapid construction and development urgently require a scientific understanding of the pattern of land use evolution in the region.This paper analyzes the pattern of land use evolution in Tongzhou District over the past 40 years,from 1980 to 2020.According to the historical evolutionary characteristics of land use and urban development planning goals,combined with the driving factors of cultural tourism development,the Future Land-use Simulation(FLUS)model is used to simulate the spatial distribution of land use in Beijing MC(Tongzhou District)in 2035 under three scenarios of urbanization acceleration,deceleration and sustainable development.The results show three major trends.(1)Beijing MC(Tongzhou District)is dominated by urban development and construction.During the high-speed urbanization stage from 1980 to 2010,the urban expansion pattern of“along the Sixth Ring Road and along the Grand Canal”was formed.During the low-speed urbanization stage from 2010 to 2020,the land distribution was stable,and Tongzhou District formed a pattern of urban-rural differentiation and land intensification from northwest to southeast.As a typical area of Tongzhou District’s urbanization,Beijing MC has the same characteristics of the temporal and spatial evolution as Tongzhou as a whole.(2)By 2035,there are significant differences in land use among the three scenarios with respect to the magnitude of change and spatial distribution.The area and distribution of ecological land under the urban sustainable development scenario are optimal,which is conducive to the realization of sustainable urban development.In analyzing the degree of conformity with the three Beijing MC zoning plans,the prediction simulation under the sustainable development scenario is highly consistent with the land use of the“Beijing Municipal Administrative Center Regulatory Detailed Planning(Block Level)(2016–2035)”(hereinafter referred to as“Planning”)issued by the municipal government.However,there are certain deviations between the simulation predictions in the cultural tourism function area and the livable living scenery area and the corresponding“Planning”expectations.During the urban construction process,the internal ecological land area still needs to be increased.(3)Tongzhou District may lack a close connection between the urban and rural areas in the southeast.Potential risks such as the imbalance in the development of northern and southern townships require further attention in the development process.The prediction and simulation results of the model can provide certain data and methodological support for the construction of a harmonious and livable city in Beijing MC(Tongzhou District).
文摘Beijing's green belt policy is three-fold:fi rstly to protect farmers' interests during urbanization, secondly to control the urban expansion, and thirdly to improve the ecological environment. The planning of industrial land for green belts has thus emerged as a way to help achieve these goals during Beijing's urban growth from morphological, social, and economic perspectives. First of all, this paper introduces the implementation mechanisms of the planning of industrial land for green belts, from which it abstracts a model of land adjustment and urban-rural cooperation. Secondly, the paper analyzes the effects and current dilemmas during the implementation of the planning of industrial land for green belts. Thirdly, results are compared with other spontaneously developed industries in the rural-urban fringe area to illustrate the changes brought about by the planning. Finally, the paper proposes three measures for future improvement, including balancing the industrial land use quotas between different townships, conducting cooperative land adjustment, and encouraging spontaneously developed industrial projects.
文摘Located in the northwest of Beijing,Haidian District has residents from all 56 ethnic groups in China, making it the most ethnically diverse area of Beijing. In June 1954, Haidian, the name of an administrative district, officially appeared on the map. Over the last 20 years, the area has developed from an outskirt of the city into a modern district with science and technology,educa- tion and culture as its core industries. Zhongguancun is a very famous place in Haidian District,which is renowned as the"
