The construction organization design for the construction process has important guiding significance;perfect construction organization design is a necessary link before the construction. Scientific and reasonable cons...The construction organization design for the construction process has important guiding significance;perfect construction organization design is a necessary link before the construction. Scientific and reasonable construction organization design can not only optimize the allocation of resources, improve the efficiency of resource utilization, but also enhance the professional cooperation between different types of work, reduce the cost of construction. This paper will analyze and discuss the problems existing in the process of construction organization design from the content and preparation process of construction organization design of construction engineering, and put forward improvement measures of construction organization design of construction engineering.展开更多
Solar power generation is of environmental significance and will not be affected by the energy crisis and the instability of the fuel market. Solar photovoltaic power generation has no moving parts and the installatio...Solar power generation is of environmental significance and will not be affected by the energy crisis and the instability of the fuel market. Solar photovoltaic power generation has no moving parts and the installation and maintenance work is simple. To transmit the electricity provided by solar energy to our daily life, we need to connect with the power grid by grid connection. In order to improve the supervision of various equipment parameters in the process of grid connection, modeling is crucial. This paper firstly gives an overview of grid connected photovoltaic power generation system. Based on the various components of the system, the grid connected photovoltaic modeling research is conducted through solar photovoltaic cell arrays.展开更多
Correlation analysis as used by meteorologists and oceanographers is a tool for the analysisof the spacial or temporal variability of physical fields. In his notes, Dr. Hasselmann pro-posed to combine correlation anal...Correlation analysis as used by meteorologists and oceanographers is a tool for the analysisof the spacial or temporal variability of physical fields. In his notes, Dr. Hasselmann pro-posed to combine correlation analysis and linear regression analysis in climate prediction re-search. The main idea is to decompose the physical field into its principal oscillation patterns.展开更多
Based on the analysis of the basic characteristics for the gob site in Northern Shaanxi Province and the room and pillar mining way about coal mine, the variety rule of the coal beds below the site was studied by the ...Based on the analysis of the basic characteristics for the gob site in Northern Shaanxi Province and the room and pillar mining way about coal mine, the variety rule of the coal beds below the site was studied by the using of FEM during the process of coal mining. The statuses of the stresses and strains and the varieties of the plastic area were simulated in the whole rock and coal pillars. The characters of stresses and deformation of the gob area of the coalmine were analyzed and evaluated after the site built in weathering. Moreover, the long-term stability of the gob area was predicted. As a result, the deformation of the gob area under the site is not been finished, and there is the danger that the gob site will collapsing as a whole; therefore, relative measures must be taken.展开更多
According to the rotor vortex theory,the rotor circulation and the rotor induced velocity are developed into Fourier series.The circulation distribution along blade spanwise is expressed in terms of segment-by-segment...According to the rotor vortex theory,the rotor circulation and the rotor induced velocity are developed into Fourier series.The circulation distribution along blade spanwise is expressed in terms of segment-by-segment linear functions.In consequence the induced velocity equations and the circulation equations are derived.The engineering application of the rotor vortex theory is provided.Then the induced velocity and its harmonic components are obtained to provide a quantitative basis for the vortex model.For calculating each harmonic component of the induced velocity a simplified method is put forward which considers the effects of each order circulation with neglecting those of higher order.The method saves the computer time and is of significant benefit.展开更多
The cost advantage of Arctic NEP （Northeast Passage） is mainly analyzed. The traditional southern route through the Suez Canal between the East Asia and the Europe is referred as benchmark routte, general cargo ship...The cost advantage of Arctic NEP （Northeast Passage） is mainly analyzed. The traditional southern route through the Suez Canal between the East Asia and the Europe is referred as benchmark routte, general cargo ship and container ship are respectively selected as benchmark ships, which are analyzed and compared with Arctic NEP from fuel consumption, insurance, icebreaker fees and cost for SOLAS amendment, etc. The study reveals that Arctic NEP highly reduces general cargo ships＇ sailing time, container ships＇ fuel consumption, and contributes to shipping＇s sustainable development.展开更多
The magnetic property of soft magnetic metals and alloys depends strongly on the crystallo-graphic orientation. In automated equipment for orientation research, the intensity for drawing up the pole figure is measured...The magnetic property of soft magnetic metals and alloys depends strongly on the crystallo-graphic orientation. In automated equipment for orientation research, the intensity for drawing up the pole figure is measured in detail. The present research shows that the accurate pole figure can be drawn up without measuring concretely the intensity. For directional Si steel sheet the measuring step may be 4～5 degrees. In this paper the experimental equation for defo-cusing correction was derived from the experimental data in different specimens with random orientation.展开更多
Solid waste contains certain resources. As long as it is used reasonably, solid waste can also exert its own economic advantages. The phenomenon of solid waste pollution is serious in China. In order to solve the ecol...Solid waste contains certain resources. As long as it is used reasonably, solid waste can also exert its own economic advantages. The phenomenon of solid waste pollution is serious in China. In order to solve the ecological threats and maximize the economic benefits, it is necessary to understand the technical requirements of solid waste treatment. It is of great positive significance for Chinas future development to find practical solutions and reduce the difficulty of solid waste treatment in the past by developing new technologies. The concept of "sustainable development" of solid waste utilization and treatment has been supported by relevant departments in China and it is the only choice to solve environmental pollution.展开更多
In the later stage of oilfield development, the efficiency of oilfield development will change significantly to a certain extent. Such changes in development efficiency will act on the actual oilfield development proc...In the later stage of oilfield development, the efficiency of oilfield development will change significantly to a certain extent. Such changes in development efficiency will act on the actual oilfield development process and affect the actual development form. Therefore, the oilfield development enterprises need to carry out refined management on the development projects in the later stage of oilfield development, and the specific refined management content is generally refined geological research. Based on this, this paper first analyzes the significance of fine geology research in the later stage of oilfield development, and then analyzes the basic requirements and development methods related to fine geology, hoping to provide effective reference for practitioners in relevant industries.展开更多
Bistatic forward-looking synthetic aperture radar（SAR） has many advantages and applications owing to its twodimensional imaging capability.There could be various imaging configurations because of the geometric flexi...Bistatic forward-looking synthetic aperture radar（SAR） has many advantages and applications owing to its twodimensional imaging capability.There could be various imaging configurations because of the geometric flexibility of bistatic platforms,resulting in kinds of models built independently among which there could be some similar even the same motion features.Comprehensive research on such systems in a more comprehensive and general point of view is required to address their difference and consistency.Property analysis of bistatic forwardlooking SAR with arbitrary geometry is achieved including stripmap and spotlight modes on airborne platform,missile-borne platform,and hybrid platform of both.Emphasis is placed on azimuth space variance of some key parameters significantly affecting the subsequent imaging processing,based on which the frequency spectra are further described and compared considering respective features of different platforms for frequency imaging algorithm developing.Simulation results confirm the effectiveness and correctness of our analysis.展开更多
Purpose: This paper explores a method of knowledge discovery by visualizing and analyzing co-occurrence relations among three or more entities in collections of journal articles.Design/methodology/approach: A variety ...Purpose: This paper explores a method of knowledge discovery by visualizing and analyzing co-occurrence relations among three or more entities in collections of journal articles.Design/methodology/approach: A variety of methods such as the model construction,system analysis and experiments are used. The author has improved Morris' crossmapping technique and developed a technique for directly describing,visualizing and analyzing co-occurrence relations among three or more entities in collections of journal articles.Findings: The visualization tools and the knowledge discovery method can efficiently reveal the multiple co-occurrence relations among three entities in collections of journal papers. It can reveal more and in-depth information than analyzing co-occurrence relations between two entities. Therefore,this method can be used for mapping knowledge domain that is manifested in association with the entities from multi-dimensional perspectives and in an all-round way.Research limitations: The technique could only be used to analyze co-occurrence relations of less than three entities at present.Practical implications: This research has expanded the study scope of co-occurrence analysis.The research result has provided a theoretical support for co-occurrence analysis.Originality/value: There has not been a systematic study on co-occurrence relations among multiple entities in collections of journal articles. This research defines multiple co-occurrence and the research scope,develops the visualization analysis tool and designs the analysis model of the knowledge discovery method.展开更多
The aim of this paper is to analyze the potential reasons for the safety failure of batteries for new-energy vehicles.Firstly,the importance and popularization of new energy batteries are introduced,and the importance...The aim of this paper is to analyze the potential reasons for the safety failure of batteries for new-energy vehicles.Firstly,the importance and popularization of new energy batteries are introduced,and the importance of safety failure issues is drawn out.Then,the composition and working principle of the battery is explained in detail,which provides the basis for the subsequent analysis.Then,the potential impacts of factors such as overcharge and over-discharge,high and low temperature environments,internal faults,and external shocks and vibrations on the safety of the batteries are analyzed.Finally,some common safety measures and solutions are proposed to improve the safety of new energy batteries,in hopes of improving the safety of batteries for new-energy vehicle.展开更多
A new form of producing and sharing knowledge has emerged as an international(United States of America,Asia,and Europe) research collaboration,known as the Long-Term Ecological Research(LTER) Network.Although Africa b...A new form of producing and sharing knowledge has emerged as an international(United States of America,Asia,and Europe) research collaboration,known as the Long-Term Ecological Research(LTER) Network.Although Africa boasts rich biodiversity,including endemic species,it lacks the long-term initiatives to underpin sustainable biodiversity managements.At present,climate change may exacerbate hunger and poverty concerns in addition to resulting in ecosystem degradation,land use change,and other threats in Africa.Therefore,ecosystem monitoring was suggested to understanding the effects of climate change and setting strategies to mitigate these changes.This paper aimed to investigate ecosystem monitoring ground sites and address their coverage gaps in Africa to provide a foundation for optimizing the African Ecosystem Research Network(AERN) ground sites.The geographic coordinates and characteristics of ground sites-based ecosystem monitoring were collected from various networks aligned with the LTER implementation in Africa.Additionally,climatic data and biodiversity distribution maps were retrieved from various sources.These data were used to assess the size of existing ground sites and the gaps in description,ecosystems and biomes.The results reveal that there were 1089 sites established by various networks.Among these sites,30.5%,27.5%,and 28.8% had no information of area,year of establishment,current status,respectively.However,68.0% of them had an area equal to or greater than 1 km2.Sites were created progressively over the course of the years,with 68.9% being created from 2000 to 2005.To date,only 41.5% of the sites were operational.The sites were scattered across Africa,but they were concentrated in Eastern and Southern Africa.The unbalanced distribution pattern of the sites left Central and Northern Africa hardly covered,and many unique ecosystems in Central Africa were not included.To sustain these sites,the AERN should be based on operational sites,seeking secure funding by establishing multiple partnerships.展开更多
Objective： To describe the revolution and research status of Advances in Psychological Science. Methods： A total of 3060 articles published in Advances in Psychological Science from 1983 to 2014 were analyzed with t...Objective： To describe the revolution and research status of Advances in Psychological Science. Methods： A total of 3060 articles published in Advances in Psychological Science from 1983 to 2014 were analyzed with the information visualization method using Citespace software from the aspects of pub- lications, cited frequency and downloads, funding, organizations, authors and keywords. Results： The results showed that the amount of literature published annually had an upward tendency, and 49.4% of the papers were supported by national or provincial projects. Institutions such as the Chinese Academy of Sciences （CAS） and the normal universities were rated in the forefront of the sci- entific research output. Xiting Huang, Hong Li and Yuejia Luo were at the top of the list of prolific authors. Conclusions： A new pattern of cooperative development of the theory and application in the field of psychological research is forming.展开更多
Geotechnical seismic engineering belongs to the cross field of geotechnical engineering and earthquake engineering. Due to the dual effects of the variability of geotechnical objects and the complexity of dynamic load...Geotechnical seismic engineering belongs to the cross field of geotechnical engineering and earthquake engineering. Due to the dual effects of the variability of geotechnical objects and the complexity of dynamic loading, the scientific problems involved in this field have to face more uncertainties. Through the analysis on the status quo of uncertainty analysis methods in geotechnical earthquake engineering in the field of non deterministic analysis clear difficulties, weak links with all kinds of uncertainty analysis method to solve the inherent weakness of determining geotechnical earthquake engineering uncertainty problem, and can determine the establishment and improvement to provide some ideas and direction analysis model for non.展开更多
In this paper, some concepts and problems in the stress analysis design method are discussed. Based on the introduction of various types of stress characteristics, the differences between stress decomposition and stre...In this paper, some concepts and problems in the stress analysis design method are discussed. Based on the introduction of various types of stress characteristics, the differences between stress decomposition and stress classification are emphasized. We pointed out that the stress decomposition only relates how stress is decomposed into uniform stress, the equivalent stress distribution of linear and nonlinear stress components, how will break out of stress classification, entirely by the stress position and stress the external decision. At the same time, it also gives a valuable perspective on the distribution twe ofoeak stress, the self limitation and the stress decomposition and classification.展开更多
China＇s total coal reserves are enormous, in which recoverable reserves of coal seam thickness ofmineable coal reserves in China accounted for 43% of recoverable reserves When correctly using thick seam mining, minin...China＇s total coal reserves are enormous, in which recoverable reserves of coal seam thickness ofmineable coal reserves in China accounted for 43% of recoverable reserves When correctly using thick seam mining, mining methods can improve the proper thick seam mining rate and reduce coal loss. Using proper thick seam mining method can effectively reduce the thick seam mining costs. In mining safety, the use of appropriate thick seam mining methods can effectively prevent thick seam mining accidents. But in the process of development and current situation from the perspective of the Chinese coal mining, there are certain aspects of thick seam mining problems. These problems are mainly in the thick seam mining and the coal recovery rate is low, resulting in lots of waste coal. Besides, thick coal mining is less secure, safe and there are frequent accidents. These problems have seriously affected the thick seam mining. And a lot of thick coal seams of coal resources can not be effectively taken out. Now Chinese mining methods in thick seam mining areas are mainly open-pit mining and underground mining exploitation. Because of the open-pit coal burial depth has more stringent requirements, only used in shallow-depth areas. Underground mining is the primary way China is now using in thick seam mining. Underground mining methods include full-height slice mining and mechanized mining caving mining method once adopted. Research on these thick seam mining methods can provide theoretical and technical support for thick seam mining, thick seam mining techniques to enhance the level . I will combine the current situation of thick seam mining in Chinese study with thick seam mining methods, comments and suggestions for the current thick seam mining study展开更多
Along with the development of the times and the innovation of the society, the history and cultures are also constantly inherited under the strike of the flow of the tide over the years, forming the centuries-old cult...Along with the development of the times and the innovation of the society, the history and cultures are also constantly inherited under the strike of the flow of the tide over the years, forming the centuries-old cultures. Of course, the heritage of any culture needs a carrier, and the history and culture is no exception. Language itself is a kind of tool for the information exchange, and the communication process of the language is also accompanied by the substitution of the culture. So it can be said it is not only the category of the information exchange, but should be expanded to the cultural heritage. With the continuous changes and development of the society, people focused more on the application in the learning of the language, so as to highlight the characteristics of different cultures through the applications in different aspects.展开更多
Financial intemal control in higher vocational olleges is an important means to ensure the stable development of school finance.However,in practice,it was found that there are problems such as insufficient internal su...Financial intemal control in higher vocational olleges is an important means to ensure the stable development of school finance.However,in practice,it was found that there are problems such as insufficient internal supervision,imperfect internal control system,and imperfect risk prevention mechanism.Therefore,this article aims to discuss the relevant overview,existing problems,and specific strategies of financial intermal control in higher vocational colleges to provide a reference for the improvement of financial internal control in higher vocational colleges.展开更多
At this stage, China's social economy is growing steadily, and the power industry is gradually strengthened. Since most of the power generation of the hydropower station is completed by operating the hydropower un...At this stage, China's social economy is growing steadily, and the power industry is gradually strengthened. Since most of the power generation of the hydropower station is completed by operating the hydropower unit, if there is a problem or fault, the hydropower unit is easy to seriously affect the power generation of the hydropower station. Due to the long operation time of hydro generator, the fault is imminent. In order to minimize a series of losses caused by such faults, relevant technicians shall identify and clarify common faults, inspect and maintain these faults and problems, and effectively improve the safety and stability of hydraulic units.展开更多
文摘The construction organization design for the construction process has important guiding significance;perfect construction organization design is a necessary link before the construction. Scientific and reasonable construction organization design can not only optimize the allocation of resources, improve the efficiency of resource utilization, but also enhance the professional cooperation between different types of work, reduce the cost of construction. This paper will analyze and discuss the problems existing in the process of construction organization design from the content and preparation process of construction organization design of construction engineering, and put forward improvement measures of construction organization design of construction engineering.
文摘Solar power generation is of environmental significance and will not be affected by the energy crisis and the instability of the fuel market. Solar photovoltaic power generation has no moving parts and the installation and maintenance work is simple. To transmit the electricity provided by solar energy to our daily life, we need to connect with the power grid by grid connection. In order to improve the supervision of various equipment parameters in the process of grid connection, modeling is crucial. This paper firstly gives an overview of grid connected photovoltaic power generation system. Based on the various components of the system, the grid connected photovoltaic modeling research is conducted through solar photovoltaic cell arrays.
文摘Correlation analysis as used by meteorologists and oceanographers is a tool for the analysisof the spacial or temporal variability of physical fields. In his notes, Dr. Hasselmann pro-posed to combine correlation analysis and linear regression analysis in climate prediction re-search. The main idea is to decompose the physical field into its principal oscillation patterns.
文摘Based on the analysis of the basic characteristics for the gob site in Northern Shaanxi Province and the room and pillar mining way about coal mine, the variety rule of the coal beds below the site was studied by the using of FEM during the process of coal mining. The statuses of the stresses and strains and the varieties of the plastic area were simulated in the whole rock and coal pillars. The characters of stresses and deformation of the gob area of the coalmine were analyzed and evaluated after the site built in weathering. Moreover, the long-term stability of the gob area was predicted. As a result, the deformation of the gob area under the site is not been finished, and there is the danger that the gob site will collapsing as a whole; therefore, relative measures must be taken.
文摘According to the rotor vortex theory,the rotor circulation and the rotor induced velocity are developed into Fourier series.The circulation distribution along blade spanwise is expressed in terms of segment-by-segment linear functions.In consequence the induced velocity equations and the circulation equations are derived.The engineering application of the rotor vortex theory is provided.Then the induced velocity and its harmonic components are obtained to provide a quantitative basis for the vortex model.For calculating each harmonic component of the induced velocity a simplified method is put forward which considers the effects of each order circulation with neglecting those of higher order.The method saves the computer time and is of significant benefit.
文摘The cost advantage of Arctic NEP （Northeast Passage） is mainly analyzed. The traditional southern route through the Suez Canal between the East Asia and the Europe is referred as benchmark routte, general cargo ship and container ship are respectively selected as benchmark ships, which are analyzed and compared with Arctic NEP from fuel consumption, insurance, icebreaker fees and cost for SOLAS amendment, etc. The study reveals that Arctic NEP highly reduces general cargo ships＇ sailing time, container ships＇ fuel consumption, and contributes to shipping＇s sustainable development.
文摘The magnetic property of soft magnetic metals and alloys depends strongly on the crystallo-graphic orientation. In automated equipment for orientation research, the intensity for drawing up the pole figure is measured in detail. The present research shows that the accurate pole figure can be drawn up without measuring concretely the intensity. For directional Si steel sheet the measuring step may be 4～5 degrees. In this paper the experimental equation for defo-cusing correction was derived from the experimental data in different specimens with random orientation.
文摘Solid waste contains certain resources. As long as it is used reasonably, solid waste can also exert its own economic advantages. The phenomenon of solid waste pollution is serious in China. In order to solve the ecological threats and maximize the economic benefits, it is necessary to understand the technical requirements of solid waste treatment. It is of great positive significance for Chinas future development to find practical solutions and reduce the difficulty of solid waste treatment in the past by developing new technologies. The concept of "sustainable development" of solid waste utilization and treatment has been supported by relevant departments in China and it is the only choice to solve environmental pollution.
文摘In the later stage of oilfield development, the efficiency of oilfield development will change significantly to a certain extent. Such changes in development efficiency will act on the actual oilfield development process and affect the actual development form. Therefore, the oilfield development enterprises need to carry out refined management on the development projects in the later stage of oilfield development, and the specific refined management content is generally refined geological research. Based on this, this paper first analyzes the significance of fine geology research in the later stage of oilfield development, and then analyzes the basic requirements and development methods related to fine geology, hoping to provide effective reference for practitioners in relevant industries.
基金supported by the National Natural Science Foundation of China(6100121161303035+1 种基金61471283)the Fundamental Research Funds for the Central Universities(K5051202016)
文摘Bistatic forward-looking synthetic aperture radar（SAR） has many advantages and applications owing to its twodimensional imaging capability.There could be various imaging configurations because of the geometric flexibility of bistatic platforms,resulting in kinds of models built independently among which there could be some similar even the same motion features.Comprehensive research on such systems in a more comprehensive and general point of view is required to address their difference and consistency.Property analysis of bistatic forwardlooking SAR with arbitrary geometry is achieved including stripmap and spotlight modes on airborne platform,missile-borne platform,and hybrid platform of both.Emphasis is placed on azimuth space variance of some key parameters significantly affecting the subsequent imaging processing,based on which the frequency spectra are further described and compared considering respective features of different platforms for frequency imaging algorithm developing.Simulation results confirm the effectiveness and correctness of our analysis.
文摘Purpose: This paper explores a method of knowledge discovery by visualizing and analyzing co-occurrence relations among three or more entities in collections of journal articles.Design/methodology/approach: A variety of methods such as the model construction,system analysis and experiments are used. The author has improved Morris' crossmapping technique and developed a technique for directly describing,visualizing and analyzing co-occurrence relations among three or more entities in collections of journal articles.Findings: The visualization tools and the knowledge discovery method can efficiently reveal the multiple co-occurrence relations among three entities in collections of journal papers. It can reveal more and in-depth information than analyzing co-occurrence relations between two entities. Therefore,this method can be used for mapping knowledge domain that is manifested in association with the entities from multi-dimensional perspectives and in an all-round way.Research limitations: The technique could only be used to analyze co-occurrence relations of less than three entities at present.Practical implications: This research has expanded the study scope of co-occurrence analysis.The research result has provided a theoretical support for co-occurrence analysis.Originality/value: There has not been a systematic study on co-occurrence relations among multiple entities in collections of journal articles. This research defines multiple co-occurrence and the research scope,develops the visualization analysis tool and designs the analysis model of the knowledge discovery method.
文摘The aim of this paper is to analyze the potential reasons for the safety failure of batteries for new-energy vehicles.Firstly,the importance and popularization of new energy batteries are introduced,and the importance of safety failure issues is drawn out.Then,the composition and working principle of the battery is explained in detail,which provides the basis for the subsequent analysis.Then,the potential impacts of factors such as overcharge and over-discharge,high and low temperature environments,internal faults,and external shocks and vibrations on the safety of the batteries are analyzed.Finally,some common safety measures and solutions are proposed to improve the safety of new energy batteries,in hopes of improving the safety of batteries for new-energy vehicle.
基金Under the auspices of National Natural Science Foundation of China(No.31161140355)
文摘A new form of producing and sharing knowledge has emerged as an international(United States of America,Asia,and Europe) research collaboration,known as the Long-Term Ecological Research(LTER) Network.Although Africa boasts rich biodiversity,including endemic species,it lacks the long-term initiatives to underpin sustainable biodiversity managements.At present,climate change may exacerbate hunger and poverty concerns in addition to resulting in ecosystem degradation,land use change,and other threats in Africa.Therefore,ecosystem monitoring was suggested to understanding the effects of climate change and setting strategies to mitigate these changes.This paper aimed to investigate ecosystem monitoring ground sites and address their coverage gaps in Africa to provide a foundation for optimizing the African Ecosystem Research Network(AERN) ground sites.The geographic coordinates and characteristics of ground sites-based ecosystem monitoring were collected from various networks aligned with the LTER implementation in Africa.Additionally,climatic data and biodiversity distribution maps were retrieved from various sources.These data were used to assess the size of existing ground sites and the gaps in description,ecosystems and biomes.The results reveal that there were 1089 sites established by various networks.Among these sites,30.5%,27.5%,and 28.8% had no information of area,year of establishment,current status,respectively.However,68.0% of them had an area equal to or greater than 1 km2.Sites were created progressively over the course of the years,with 68.9% being created from 2000 to 2005.To date,only 41.5% of the sites were operational.The sites were scattered across Africa,but they were concentrated in Eastern and Southern Africa.The unbalanced distribution pattern of the sites left Central and Northern Africa hardly covered,and many unique ecosystems in Central Africa were not included.To sustain these sites,the AERN should be based on operational sites,seeking secure funding by establishing multiple partnerships.
基金supported by MOE(Ministry of Education of China)the research projects of Humanities and Social Sciences(No.13YJCZH239)Project of innovation and entrepreneurship for undergraduates in Shanxi Medical University(No.20160311)
文摘Objective： To describe the revolution and research status of Advances in Psychological Science. Methods： A total of 3060 articles published in Advances in Psychological Science from 1983 to 2014 were analyzed with the information visualization method using Citespace software from the aspects of pub- lications, cited frequency and downloads, funding, organizations, authors and keywords. Results： The results showed that the amount of literature published annually had an upward tendency, and 49.4% of the papers were supported by national or provincial projects. Institutions such as the Chinese Academy of Sciences （CAS） and the normal universities were rated in the forefront of the sci- entific research output. Xiting Huang, Hong Li and Yuejia Luo were at the top of the list of prolific authors. Conclusions： A new pattern of cooperative development of the theory and application in the field of psychological research is forming.
文摘Geotechnical seismic engineering belongs to the cross field of geotechnical engineering and earthquake engineering. Due to the dual effects of the variability of geotechnical objects and the complexity of dynamic loading, the scientific problems involved in this field have to face more uncertainties. Through the analysis on the status quo of uncertainty analysis methods in geotechnical earthquake engineering in the field of non deterministic analysis clear difficulties, weak links with all kinds of uncertainty analysis method to solve the inherent weakness of determining geotechnical earthquake engineering uncertainty problem, and can determine the establishment and improvement to provide some ideas and direction analysis model for non.
文摘In this paper, some concepts and problems in the stress analysis design method are discussed. Based on the introduction of various types of stress characteristics, the differences between stress decomposition and stress classification are emphasized. We pointed out that the stress decomposition only relates how stress is decomposed into uniform stress, the equivalent stress distribution of linear and nonlinear stress components, how will break out of stress classification, entirely by the stress position and stress the external decision. At the same time, it also gives a valuable perspective on the distribution twe ofoeak stress, the self limitation and the stress decomposition and classification.
文摘China＇s total coal reserves are enormous, in which recoverable reserves of coal seam thickness ofmineable coal reserves in China accounted for 43% of recoverable reserves When correctly using thick seam mining, mining methods can improve the proper thick seam mining rate and reduce coal loss. Using proper thick seam mining method can effectively reduce the thick seam mining costs. In mining safety, the use of appropriate thick seam mining methods can effectively prevent thick seam mining accidents. But in the process of development and current situation from the perspective of the Chinese coal mining, there are certain aspects of thick seam mining problems. These problems are mainly in the thick seam mining and the coal recovery rate is low, resulting in lots of waste coal. Besides, thick coal mining is less secure, safe and there are frequent accidents. These problems have seriously affected the thick seam mining. And a lot of thick coal seams of coal resources can not be effectively taken out. Now Chinese mining methods in thick seam mining areas are mainly open-pit mining and underground mining exploitation. Because of the open-pit coal burial depth has more stringent requirements, only used in shallow-depth areas. Underground mining is the primary way China is now using in thick seam mining. Underground mining methods include full-height slice mining and mechanized mining caving mining method once adopted. Research on these thick seam mining methods can provide theoretical and technical support for thick seam mining, thick seam mining techniques to enhance the level . I will combine the current situation of thick seam mining in Chinese study with thick seam mining methods, comments and suggestions for the current thick seam mining study
文摘Along with the development of the times and the innovation of the society, the history and cultures are also constantly inherited under the strike of the flow of the tide over the years, forming the centuries-old cultures. Of course, the heritage of any culture needs a carrier, and the history and culture is no exception. Language itself is a kind of tool for the information exchange, and the communication process of the language is also accompanied by the substitution of the culture. So it can be said it is not only the category of the information exchange, but should be expanded to the cultural heritage. With the continuous changes and development of the society, people focused more on the application in the learning of the language, so as to highlight the characteristics of different cultures through the applications in different aspects.
文摘Financial intemal control in higher vocational olleges is an important means to ensure the stable development of school finance.However,in practice,it was found that there are problems such as insufficient internal supervision,imperfect internal control system,and imperfect risk prevention mechanism.Therefore,this article aims to discuss the relevant overview,existing problems,and specific strategies of financial intermal control in higher vocational colleges to provide a reference for the improvement of financial internal control in higher vocational colleges.
文摘At this stage, China's social economy is growing steadily, and the power industry is gradually strengthened. Since most of the power generation of the hydropower station is completed by operating the hydropower unit, if there is a problem or fault, the hydropower unit is easy to seriously affect the power generation of the hydropower station. Due to the long operation time of hydro generator, the fault is imminent. In order to minimize a series of losses caused by such faults, relevant technicians shall identify and clarify common faults, inspect and maintain these faults and problems, and effectively improve the safety and stability of hydraulic units.
