Qualitative indexes contained in the product standards of in-depth ecotourism development are summarized as:carrying capacity control,protection of natural environment,participation of community residents,education ab...Qualitative indexes contained in the product standards of in-depth ecotourism development are summarized as:carrying capacity control,protection of natural environment,participation of community residents,education about environment protection,enhancing standard management,clean production,green training,and overall monitoring.Based on the model of grey system theory,the improvement of in-depth ecotourism development was predicted,the construction,evaluation and monitoring model for the in-depth development of ecotourism was established,and finally the index system for the evaluation was set as the General Layer(A),the System Layer(B),the Status Layer(C),and the Variable Layer(D).展开更多
CuIn（S,Se）2 thin films were prepared by thermal crystallization of co-sputtered Cu-In alloy precursors in S/Se atmosphere. In-depth compositional uniformity is an important prereq- uisite for obtaining device-qualit...CuIn（S,Se）2 thin films were prepared by thermal crystallization of co-sputtered Cu-In alloy precursors in S/Se atmosphere. In-depth compositional uniformity is an important prereq- uisite for obtaining device-quality CuIn（S,Se）2 absorber thin films. In order to figure out the influence of heat treatments on in-depth composition uniformity of CuIn（S,Se）2 thin films, two kinds of reaction temperature profiles were investigated. One process is ＂one step profile＂, referring to formation of CuIn（S,Se）2 thin films just at elevated temperature （e.g. 500 ℃）. The other is ＂two step profile＂, which allows for slow diffusion of S and Se elements into the alloy precursors at a low temperature before the formation and re-crystallization of CuIn（S,Se）2 thin films at higher temperature （e.g. first 250 ℃ then 500 ℃）. X-ray diffrac- tion studies reveal that there is a discrepancy in the shape of （112） peak. Samples annealed with ＂one step profile＂ have splits on （112） peaks, while samples annealed with ＂two step profile＂ have relatively symmetrical （112） peaks. Grazing incident X-ray diffraction and en- ergy dispersive spectrum measurements of samples successively etched in bromine methanol show that CuIn（S,Se）2 thin films have better in-depth composition uniformity after ＂two step profile＂ annealing. The reaction mechanism during the two thermal processing was also investigated by X-ray diffraction and Raman spectra.展开更多
Two sand packs were filled with fine glass beads and quartz sand respectively. The characteristics of crosslinked polymer flowing through the sand packs as well as the influence of shear fracture of porous media on th...Two sand packs were filled with fine glass beads and quartz sand respectively. The characteristics of crosslinked polymer flowing through the sand packs as well as the influence of shear fracture of porous media on the indepth profile modification of the weak gel generated from the crosslinked polymer were investigated. The results indicated that under the dynamic condition crosslinking reaction happened in both sand packs, and the weak gels in these two cases became small gel particles after water flooding. The differences were： the dynamic gelation time in the quartz sand pack was longer than that in the glass bead pack. Residual resistance factor （FRR） caused by the weak gel in the quartz sand pack was smaller than that in the glass bead pack. The weak gel became gel particles after being scoured by subsequent flood water. A weak gel with uniform apparent viscosity and sealing characteristics was generated in every part of the glass bead pack, which could not only move deeply into the sand pack but also seal the high capacity channels again when it reached the deep part. The weak gel performed in-depth profile modification in the glass bead pack, while in the quartz sand pack, the weak gel was concentrated with 100 cm from the entrance of the sand pack. When propelled by the subsequent flood water, the weak gel could move towards the deep part of the sand pack but then became tiny gel particles and could not effectively seal the high capacity channels there. The in-depth profile modification of the weak gel was very weak in the quartz sand pack. It was the shear fracture of porous media that mainly affected the properties and weakened the in-depth profile modification of the weak gel.展开更多
Mankind has lived in the earth for countless years,but until now,people are not really understand the connotation of the Earth.We know that the earth composition including the lithosphere,asthenosphere,mantle,and core...Mankind has lived in the earth for countless years,but until now,people are not really understand the connotation of the Earth.We know that the earth composition including the lithosphere,asthenosphere,mantle,and core.The lithosphere supports all the life on Earth.For a long time,geoscientists trying to use all kind of methods such as geological,geophysical,and geochemical methods to detect and study the earth,but our knowledge about earth are mostly indirect.Through the direct observation to the lithosphere,people can understand and recognize the plate movement of ocean and the mainland,crustal stress,earthquakes,volcanic processes,deep resources,the origins of life,global climate change,and biodiversity.They are all the basis of a series of geoscience problems(Su et al.,2010). For our daily lives,as we all know,against landslides,mudslides and other geological disasters,people's responses can only be monitoring,prevention and countermeasures are needed.One of the most important technical means is the drilling methods.For example,through engineering investigation drilling,people can understand the overall structure of the landslide.Through anchor nails,bolt,cable,curtain grouting,soil modification,anti-slide bored piles of construction,people can prevent landslides,collapse,and other geological disasters. For geosciences,earth scientists are facing a lot of challenges.Plate tectonic theory is one of the 20th century’s major scientific achievements.The continental drift assumptions put forward in the early 20th century,but until 1968,the'Geluoma?Challenger'ocean drilling vessel belong to United States had drilled several hundred holes in the ocean,the theory of seafloor spreading and plate subduction model has been confirmed directly by drilling.However,many problems cannot be explained by'Plate theory'on land.A continental dynamics theory is initiating and developing based on the internal driving force of continent.This heralded a landmark geological revolution is coming soon. At the same time,the 21st century human survival and development resources,the environment and disaster reduction,and other issues need to be addressed urgently.All of this requires us to understand the deep Earth,and the only direct means of direct observation of the Earth's continental crust is'Continental Scientific Drilling'. Geological samples,especially those from deep of the Earth,are the most direct study subjects for geologists.But the only way to access the true samples from deep of the earth is drilling.The most direct evidence always originated from the deep of the earth,such as core,cuttings,fluid samples and other physical samples.This is also true for ophiolite researches. Continental scientific drilling has been demonstrated as an efficient technique for directly obtaining information from the Earth’s surface to the deep crust,and is acknowledged as'to build a telescope inserting to the interior of the Earth',as well as'a key for opening the door of the Earth'.Over the past four decades,continental scientific drilling has achieved great success in enhancing our knowledge of the Earth,and in providing information on mineral resources,large engineering projects and global change.These benefits also relate to ophiolite research. Along with China's Brahmaputra River intermittently distributed ophiolite sets.Its distribution in Tibet is more than 1,000 kilometres long and extends along the Brahmaputra and the Indian Ocean to Myanmar and Pakistan.We have completed a number of coring holes along this ophiolite belt in recent years.The cores were collected from these holes provide geologists with real physical samples coring from the depths of the earth,which have played a significant role in deepening their ophiolite research.And the coring drilling projects along this ophiolite belt will be continue for years,to continue to provide geologists enough ophiolite real samples for their researches. No advanced drilling technology,no enough high quality samples from the deep Earth,the in-depth ophiolite research will be restricted(Zhang et al.,2013).展开更多
In this paper,a series of major policy decisions used to improve the power grid reliability,reduce the risk and losses of major power outages,and realize the modernization of 21st century power grid are discussed. The...In this paper,a series of major policy decisions used to improve the power grid reliability,reduce the risk and losses of major power outages,and realize the modernization of 21st century power grid are discussed. These decisions were adopted by American government and would also be helpful for the strategic development of Chinese power grid. It is proposed that China should take precaution,carry out security research on the overall dynamic behaviour characteristics of the UHV grid using the complexity theory,and finally provide safeguard for the Chinese UHV grid. It is also pointed out that,due to the lack of matured approaches to controll a cascading failure,the primary duty of a system operator is to work as a "watchdog" for the grid operation security,eliminate the cumulative effect and reduce the risk and losses of major cascading outages with the help of EMS and WAMS.展开更多
There exists some difficulties among high school students in understanding English monologues because some words are unfamiliar to them while some sentences are long and complex.Just by listening,reading,and translati...There exists some difficulties among high school students in understanding English monologues because some words are unfamiliar to them while some sentences are long and complex.Just by listening,reading,and translating from English into Mandarin,the students are unable to fully grasp the conveyed messages in these monologues.In the General Senior High School Curriculum Standards(2017 Edition),it clearly required candidates to be able to understand familiar short dialogues and monologues about daily life topics.Candidates should be able to understand the gist,obtain specific factual information,make simple inferences about what they are listening to,and understand the speaker^intention,views,as well as attitude.This article mainly discusses specific implementation strategies of in-depth interpretation when listening in on monologues.展开更多
Objective To identify the representative attributes of the five elements of a person with a qualitative methodology and provide the basis for the clinical diagnosis and treatment of“people with the five elements in t...Objective To identify the representative attributes of the five elements of a person with a qualitative methodology and provide the basis for the clinical diagnosis and treatment of“people with the five elements in traditional Chinese medicine(TCM).”Methods Data collected from the literature review,two sessions of brainstorming of experts with related experience in“people with the five elements in TCM”from October 2020 to December 2020,and six rounds of in-depth interviews with 30 participants who had various attributes of the five elements from March 2021 to October 2021 were analyzed.Triangulation was used in this study,and theming and synthesizing were used to analyze the data.Results A total of 31 experts and 30 interviewees participated in this study.The median age of the experts and interviewees were 48.0 and 38.5 years,respectively;51.66%and 54.8%of experts and interviewees,respectively,were men.The descriptors of facial diagrams of“people with the five elements in TCM”were complexion,shape,distribution state of facial bones,convergence trend of facial muscles,and facial expression.A theoretical model of“people with the five elements in TCM”was shaped based on these findings.Conclusion The study suggests a possibility for bridging the gap between personality and bodily state,identifying an avenue for personality research from the perspective of TCM.展开更多
Objective: The objective was to explore manager experiences using the RAFAELA system. Background: The RAFAELA system was developed in Finland during the 1990s to create a work situation where patients’ care needs wer...Objective: The objective was to explore manager experiences using the RAFAELA system. Background: The RAFAELA system was developed in Finland during the 1990s to create a work situation where patients’ care needs were balanced with personnel resources. The system is used in almost all hospitals in Finland and is implemented in several European countries. However, the system has never been evaluated outside Finland. This study, focusing on the managers’ perspective, represents the second report from a larger Norwegian evaluation project of the RAFAELA system. Methods: An explorative qualitative design was chosen. Data were collected by individual in-depth interviews at a university hospital in Norway during 2012-2013. A total of 10 informants in various management positions were interviewed. The tape-recorded interviews were transcribed verbatim, and the transcripts were analysed using Kvale’s method for content analysis. Results: Four main themes emerged from the qualitative data: making the invisible visible;a common language;a system for prospective planning;and a resource-demanding tool. Conclusions: The study indicated that the RAFAELA system provided useful information about the patients’ care needs and nursing activities. Also the system provided a common reference frame for discussing nursing, staffing and allocation. Although the managers considered the RAFAELA to be time consuming in the implementation phase, they considered the system to be an important tool.展开更多
基金Supported by Scientific Research Foundation of Xuchang University(2009) " Study on Livable City from the Perspective of Ecological Footprint"~~
文摘Qualitative indexes contained in the product standards of in-depth ecotourism development are summarized as:carrying capacity control,protection of natural environment,participation of community residents,education about environment protection,enhancing standard management,clean production,green training,and overall monitoring.Based on the model of grey system theory,the improvement of in-depth ecotourism development was predicted,the construction,evaluation and monitoring model for the in-depth development of ecotourism was established,and finally the index system for the evaluation was set as the General Layer(A),the System Layer(B),the Status Layer(C),and the Variable Layer(D).
文摘CuIn（S,Se）2 thin films were prepared by thermal crystallization of co-sputtered Cu-In alloy precursors in S/Se atmosphere. In-depth compositional uniformity is an important prereq- uisite for obtaining device-quality CuIn（S,Se）2 absorber thin films. In order to figure out the influence of heat treatments on in-depth composition uniformity of CuIn（S,Se）2 thin films, two kinds of reaction temperature profiles were investigated. One process is ＂one step profile＂, referring to formation of CuIn（S,Se）2 thin films just at elevated temperature （e.g. 500 ℃）. The other is ＂two step profile＂, which allows for slow diffusion of S and Se elements into the alloy precursors at a low temperature before the formation and re-crystallization of CuIn（S,Se）2 thin films at higher temperature （e.g. first 250 ℃ then 500 ℃）. X-ray diffrac- tion studies reveal that there is a discrepancy in the shape of （112） peak. Samples annealed with ＂one step profile＂ have splits on （112） peaks, while samples annealed with ＂two step profile＂ have relatively symmetrical （112） peaks. Grazing incident X-ray diffraction and en- ergy dispersive spectrum measurements of samples successively etched in bromine methanol show that CuIn（S,Se）2 thin films have better in-depth composition uniformity after ＂two step profile＂ annealing. The reaction mechanism during the two thermal processing was also investigated by X-ray diffraction and Raman spectra.
文摘Two sand packs were filled with fine glass beads and quartz sand respectively. The characteristics of crosslinked polymer flowing through the sand packs as well as the influence of shear fracture of porous media on the indepth profile modification of the weak gel generated from the crosslinked polymer were investigated. The results indicated that under the dynamic condition crosslinking reaction happened in both sand packs, and the weak gels in these two cases became small gel particles after water flooding. The differences were： the dynamic gelation time in the quartz sand pack was longer than that in the glass bead pack. Residual resistance factor （FRR） caused by the weak gel in the quartz sand pack was smaller than that in the glass bead pack. The weak gel became gel particles after being scoured by subsequent flood water. A weak gel with uniform apparent viscosity and sealing characteristics was generated in every part of the glass bead pack, which could not only move deeply into the sand pack but also seal the high capacity channels again when it reached the deep part. The weak gel performed in-depth profile modification in the glass bead pack, while in the quartz sand pack, the weak gel was concentrated with 100 cm from the entrance of the sand pack. When propelled by the subsequent flood water, the weak gel could move towards the deep part of the sand pack but then became tiny gel particles and could not effectively seal the high capacity channels there. The in-depth profile modification of the weak gel was very weak in the quartz sand pack. It was the shear fracture of porous media that mainly affected the properties and weakened the in-depth profile modification of the weak gel.
文摘Mankind has lived in the earth for countless years,but until now,people are not really understand the connotation of the Earth.We know that the earth composition including the lithosphere,asthenosphere,mantle,and core.The lithosphere supports all the life on Earth.For a long time,geoscientists trying to use all kind of methods such as geological,geophysical,and geochemical methods to detect and study the earth,but our knowledge about earth are mostly indirect.Through the direct observation to the lithosphere,people can understand and recognize the plate movement of ocean and the mainland,crustal stress,earthquakes,volcanic processes,deep resources,the origins of life,global climate change,and biodiversity.They are all the basis of a series of geoscience problems(Su et al.,2010). For our daily lives,as we all know,against landslides,mudslides and other geological disasters,people's responses can only be monitoring,prevention and countermeasures are needed.One of the most important technical means is the drilling methods.For example,through engineering investigation drilling,people can understand the overall structure of the landslide.Through anchor nails,bolt,cable,curtain grouting,soil modification,anti-slide bored piles of construction,people can prevent landslides,collapse,and other geological disasters. For geosciences,earth scientists are facing a lot of challenges.Plate tectonic theory is one of the 20th century’s major scientific achievements.The continental drift assumptions put forward in the early 20th century,but until 1968,the'Geluoma?Challenger'ocean drilling vessel belong to United States had drilled several hundred holes in the ocean,the theory of seafloor spreading and plate subduction model has been confirmed directly by drilling.However,many problems cannot be explained by'Plate theory'on land.A continental dynamics theory is initiating and developing based on the internal driving force of continent.This heralded a landmark geological revolution is coming soon. At the same time,the 21st century human survival and development resources,the environment and disaster reduction,and other issues need to be addressed urgently.All of this requires us to understand the deep Earth,and the only direct means of direct observation of the Earth's continental crust is'Continental Scientific Drilling'. Geological samples,especially those from deep of the Earth,are the most direct study subjects for geologists.But the only way to access the true samples from deep of the earth is drilling.The most direct evidence always originated from the deep of the earth,such as core,cuttings,fluid samples and other physical samples.This is also true for ophiolite researches. Continental scientific drilling has been demonstrated as an efficient technique for directly obtaining information from the Earth’s surface to the deep crust,and is acknowledged as'to build a telescope inserting to the interior of the Earth',as well as'a key for opening the door of the Earth'.Over the past four decades,continental scientific drilling has achieved great success in enhancing our knowledge of the Earth,and in providing information on mineral resources,large engineering projects and global change.These benefits also relate to ophiolite research. Along with China's Brahmaputra River intermittently distributed ophiolite sets.Its distribution in Tibet is more than 1,000 kilometres long and extends along the Brahmaputra and the Indian Ocean to Myanmar and Pakistan.We have completed a number of coring holes along this ophiolite belt in recent years.The cores were collected from these holes provide geologists with real physical samples coring from the depths of the earth,which have played a significant role in deepening their ophiolite research.And the coring drilling projects along this ophiolite belt will be continue for years,to continue to provide geologists enough ophiolite real samples for their researches. No advanced drilling technology,no enough high quality samples from the deep Earth,the in-depth ophiolite research will be restricted(Zhang et al.,2013).
文摘In this paper,a series of major policy decisions used to improve the power grid reliability,reduce the risk and losses of major power outages,and realize the modernization of 21st century power grid are discussed. These decisions were adopted by American government and would also be helpful for the strategic development of Chinese power grid. It is proposed that China should take precaution,carry out security research on the overall dynamic behaviour characteristics of the UHV grid using the complexity theory,and finally provide safeguard for the Chinese UHV grid. It is also pointed out that,due to the lack of matured approaches to controll a cascading failure,the primary duty of a system operator is to work as a "watchdog" for the grid operation security,eliminate the cumulative effect and reduce the risk and losses of major cascading outages with the help of EMS and WAMS.
文摘There exists some difficulties among high school students in understanding English monologues because some words are unfamiliar to them while some sentences are long and complex.Just by listening,reading,and translating from English into Mandarin,the students are unable to fully grasp the conveyed messages in these monologues.In the General Senior High School Curriculum Standards(2017 Edition),it clearly required candidates to be able to understand familiar short dialogues and monologues about daily life topics.Candidates should be able to understand the gist,obtain specific factual information,make simple inferences about what they are listening to,and understand the speaker^intention,views,as well as attitude.This article mainly discusses specific implementation strategies of in-depth interpretation when listening in on monologues.
基金financially supported by the Beijing Hospital Management Center“Dengfeng”plan[DFL20191901]。
文摘Objective To identify the representative attributes of the five elements of a person with a qualitative methodology and provide the basis for the clinical diagnosis and treatment of“people with the five elements in traditional Chinese medicine(TCM).”Methods Data collected from the literature review,two sessions of brainstorming of experts with related experience in“people with the five elements in TCM”from October 2020 to December 2020,and six rounds of in-depth interviews with 30 participants who had various attributes of the five elements from March 2021 to October 2021 were analyzed.Triangulation was used in this study,and theming and synthesizing were used to analyze the data.Results A total of 31 experts and 30 interviewees participated in this study.The median age of the experts and interviewees were 48.0 and 38.5 years,respectively;51.66%and 54.8%of experts and interviewees,respectively,were men.The descriptors of facial diagrams of“people with the five elements in TCM”were complexion,shape,distribution state of facial bones,convergence trend of facial muscles,and facial expression.A theoretical model of“people with the five elements in TCM”was shaped based on these findings.Conclusion The study suggests a possibility for bridging the gap between personality and bodily state,identifying an avenue for personality research from the perspective of TCM.
文摘Objective: The objective was to explore manager experiences using the RAFAELA system. Background: The RAFAELA system was developed in Finland during the 1990s to create a work situation where patients’ care needs were balanced with personnel resources. The system is used in almost all hospitals in Finland and is implemented in several European countries. However, the system has never been evaluated outside Finland. This study, focusing on the managers’ perspective, represents the second report from a larger Norwegian evaluation project of the RAFAELA system. Methods: An explorative qualitative design was chosen. Data were collected by individual in-depth interviews at a university hospital in Norway during 2012-2013. A total of 10 informants in various management positions were interviewed. The tape-recorded interviews were transcribed verbatim, and the transcripts were analysed using Kvale’s method for content analysis. Results: Four main themes emerged from the qualitative data: making the invisible visible;a common language;a system for prospective planning;and a resource-demanding tool. Conclusions: The study indicated that the RAFAELA system provided useful information about the patients’ care needs and nursing activities. Also the system provided a common reference frame for discussing nursing, staffing and allocation. Although the managers considered the RAFAELA to be time consuming in the implementation phase, they considered the system to be an important tool.
