Background: COVID-19 had become much less virulent but still infectious, and China had loosened controls on its prevention after three years of zero-COVID policy. Nursing students were faced with infection. However, t...Background: COVID-19 had become much less virulent but still infectious, and China had loosened controls on its prevention after three years of zero-COVID policy. Nursing students were faced with infection. However, the symptoms of the vast majority of them were not serious. Objectives: To understand the feelings and thoughts of nursing undergraduates first infected with COVID-19 after implementing the policy of loosening controls on COVID-19 prevention in China. Methods: A semi-structured in-depth interview was adopted to collect data from 19 nursing undergraduates in a nursing school in China in January 2023, which were then analyzed using the Colaizzi analysis method. Results: Two main themes and seven sub-themes were induced: feelings after the diagnosis of being infected (feeling calm by professional confidence, feeling afraid of the consequences of being infected, feeling depressed, feeling relieved/lucky/happy), and thoughts brought by COVID-19 infection (becoming more active in learning, committed to a nursing career, and feeling shaken about becoming a nurse). Conclusions: Schools and hospitals should pay attention to infected nursing students’ mental reactions and changes in study motivation and professional intention. Targeted measures, such as education for epidemic prevention and education for cultivating the professional spirit, should be taken to promote their mental health and reserve their talents for nursing.展开更多
How to restore the destroyed forest after forest fire is a key question that man must face. This paper reviewed the research situation and history on the forest restoration burned blanks and summed up the research met...How to restore the destroyed forest after forest fire is a key question that man must face. This paper reviewed the research situation and history on the forest restoration burned blanks and summed up the research methods used into four scales: seed-bank scale, community scale, ecosystem scale and landscape scale. The new technologies such as GIS & Remote Sensing used to vegetation restoration were also summarized. The strategies and developing trend of vegetation restoration research on burned blanks were discussed.展开更多
Daxing抋n Mountains was one of the most important forest areas in China, but it was also an area which was prone to suffering forest fire. The catastrophic forest fire that occurred in Daxing抋n Mountains on May 6, 19...Daxing抋n Mountains was one of the most important forest areas in China, but it was also an area which was prone to suffering forest fire. The catastrophic forest fire that occurred in Daxing抋n Mountains on May 6, 1987 devastated more than 1.33?06 hm2 of natural forests, which leaded to the formation of some mosaic areas with different burn intensities. Two forest farms of Tuqiang Forest Bureau (124?5-122?8E, 53?4-52?5N) were chosen as a typical area to analyze the post-fire landscape change by drawing and comparing the two digital forest stand maps of 1987 and 2000. The landscape lands of forest were classi-fied into 12 types: coniferous forest, broadleaf forest, needle-broadleaf mixed forest, shrub, nursery, harvested area, burned blanks, agricultural land, swamp, water, built-up, grass. The results showed that: 1) The burned blanks was almost restored, some of them mainly converted into broadleaf forest land during the process of natural restoration, and coniferous forest land by the artificial re-forestation, and the others almost changed into swamp or grass land; 2) The proportion of forest area increased from 47.6% in 1987 to 81.3% in 2002. Therefore, a few management countermeasures, such as the enhancing peoples consciousness of fire-proofing and constructing species diversity, were put forward for forest sustainable development.展开更多
Based on the elastoplastic mechanical properties of the weld and heat affected zone metals obtained by a nanoindentation test, a theoretical calculation model was established for the forming limit diagram（FLD） of ta...Based on the elastoplastic mechanical properties of the weld and heat affected zone metals obtained by a nanoindentation test, a theoretical calculation model was established for the forming limit diagram（FLD） of tailor-welded blanks（TWBs） on the basis of plastic constitutive relations and Hosford yield criteria. Hemispherical punch bulging tests were performed to verify the FLD theoretical calculation results. The results demonstrated that not only the FLD theoretical calculation of base materials but also that of TWBs had a good agreement with their experiments. Besides, poorer formability of TWBs caused its FLD significantly lower than that of base materials. The theoretical calculation model offers a reliable approach to obtain the specific FLD of TWBs.展开更多
[Objective] This study was to overview the research progress and thoughts of habitat suitability evaluation of citrus based on ecological niche theory. [Method] The research progress on habitat suitability evaluation ...[Objective] This study was to overview the research progress and thoughts of habitat suitability evaluation of citrus based on ecological niche theory. [Method] The research progress on habitat suitability evaluation and ecological niche theory to the niche selection of crops were comprehensively analyzed. [Result] The research thoughts of using niche theory to evaluate the habitat suitability of citrus with quality constraint were put forward, including collection and expression of citrus ecological environment and quality factors, interactive response study of the citrus ecological environment and quality, and habitat suitability evaluation and adaptation mechanism study of citrus based on quality constraint. [Conclusion] This study provided references for the development of citrus industrialization.展开更多
The“prisoner’s dilemma”illustrates that everyone is rationally thinking about maximizing their own interests and taking their own best strategies,but the end result is counterproductive.In Prisoner’s Dilemma Richa...The“prisoner’s dilemma”illustrates that everyone is rationally thinking about maximizing their own interests and taking their own best strategies,but the end result is counterproductive.In Prisoner’s Dilemma Richard Powers describes multiformareas of dilemma;to lose balance;to make choices;and ask each other:what to do next?It is a master trope for relaying the permanent impasse or dilemma of cooperation versus defection.In most cases,the prisoner's dilemma is more about the number of defeats in the game,and even a major loss of society.Individual rationality is likely to be a collective disregard,and if everyone is acting on the principle of self-interest,it is often the result that everyone is lost.Powers expresses his philosophical insight:Until a cooperative instead of antagonistic solution is collectively agreed upon,we still remain imprisoned in an interminable and oppressive struggle and conflict decided by self-interest and rational control,which is also a moral response to historical consciousness of postmodernism.展开更多
To study the influence of blank holder type on the drawability of 5182-O aluminum sheet at room temperature, the flat blank holder and curved blank holder were employed during the deep drawing process. The microstruct...To study the influence of blank holder type on the drawability of 5182-O aluminum sheet at room temperature, the flat blank holder and curved blank holder were employed during the deep drawing process. The microstructures were characterized by optical microscopy （OM）. The results reveal that the limiting drawing ratio （LDR） of 5182-O aluminum alloy sheet is 1.7 using the flat blank holder. The drawn cup have severe earring. Compared with using flat blank holder, the LDR of 5182-O aluminum alloy sheet is enhanced to 2.0 using curved blank holder. In addition, the earring ratio also reduces and flange wrinkling is prevented when the curved blank holder is used. These are due to a more uniform sheet flow in different directions with curved blank holder.展开更多
Marx and Engels put forward the thought of spiritual production and spiritual productive force,and pointed out the viewpoint of training free and all-round developed human beings by communist culture.Lenin thought tha...Marx and Engels put forward the thought of spiritual production and spiritual productive force,and pointed out the viewpoint of training free and all-round developed human beings by communist culture.Lenin thought that Cultural construction was an important driving force of political civilization,he also proposed that we should develop education and science program in a planned way,foster the new socialist men,etc.Marxist Classical Writers'cultural thought is the main source of the theory of socialist cultural construction with Chinese characteristics.展开更多
Tragic thought has been interwoven throughout D.H.Lawrence's works,and his tragic sense is the direct result of the social realities,cultural context and his personal experiences.
Thought patterns and language are closely related,they are two aspect of the culture.Translation,a tool of intercultural communication,connects the different thought patterns.In this paper,a specific analysis of the l...Thought patterns and language are closely related,they are two aspect of the culture.Translation,a tool of intercultural communication,connects the different thought patterns.In this paper,a specific analysis of the limitation in translation caused by the difference is illustrated.Thus,translation is influenced deeply by the different thought patterns.The only way to get the reappearance to the culture in translation is to find out the principles of translation from the different thought patterns.展开更多
文摘Background: COVID-19 had become much less virulent but still infectious, and China had loosened controls on its prevention after three years of zero-COVID policy. Nursing students were faced with infection. However, the symptoms of the vast majority of them were not serious. Objectives: To understand the feelings and thoughts of nursing undergraduates first infected with COVID-19 after implementing the policy of loosening controls on COVID-19 prevention in China. Methods: A semi-structured in-depth interview was adopted to collect data from 19 nursing undergraduates in a nursing school in China in January 2023, which were then analyzed using the Colaizzi analysis method. Results: Two main themes and seven sub-themes were induced: feelings after the diagnosis of being infected (feeling calm by professional confidence, feeling afraid of the consequences of being infected, feeling depressed, feeling relieved/lucky/happy), and thoughts brought by COVID-19 infection (becoming more active in learning, committed to a nursing career, and feeling shaken about becoming a nurse). Conclusions: Schools and hospitals should pay attention to infected nursing students’ mental reactions and changes in study motivation and professional intention. Targeted measures, such as education for epidemic prevention and education for cultivating the professional spirit, should be taken to promote their mental health and reserve their talents for nursing.
文摘How to restore the destroyed forest after forest fire is a key question that man must face. This paper reviewed the research situation and history on the forest restoration burned blanks and summed up the research methods used into four scales: seed-bank scale, community scale, ecosystem scale and landscape scale. The new technologies such as GIS & Remote Sensing used to vegetation restoration were also summarized. The strategies and developing trend of vegetation restoration research on burned blanks were discussed.
基金Under the auspices of the National Science Foundation of China (No. 30270225 40331008) and the Chinese Academy of Sciences (SCXZY0102).
文摘Daxing抋n Mountains was one of the most important forest areas in China, but it was also an area which was prone to suffering forest fire. The catastrophic forest fire that occurred in Daxing抋n Mountains on May 6, 1987 devastated more than 1.33?06 hm2 of natural forests, which leaded to the formation of some mosaic areas with different burn intensities. Two forest farms of Tuqiang Forest Bureau (124?5-122?8E, 53?4-52?5N) were chosen as a typical area to analyze the post-fire landscape change by drawing and comparing the two digital forest stand maps of 1987 and 2000. The landscape lands of forest were classi-fied into 12 types: coniferous forest, broadleaf forest, needle-broadleaf mixed forest, shrub, nursery, harvested area, burned blanks, agricultural land, swamp, water, built-up, grass. The results showed that: 1) The burned blanks was almost restored, some of them mainly converted into broadleaf forest land during the process of natural restoration, and coniferous forest land by the artificial re-forestation, and the others almost changed into swamp or grass land; 2) The proportion of forest area increased from 47.6% in 1987 to 81.3% in 2002. Therefore, a few management countermeasures, such as the enhancing peoples consciousness of fire-proofing and constructing species diversity, were put forward for forest sustainable development.
基金Project(51275444) supported by the National Natural Science Foundation of ChinaProject(20121333110003) supported by the Specialized Research Fund for the Doctoral Program of Higher Education,China+1 种基金Project(E2014203271) supported by the Natural Science Foundation–Steel and Iron Foundation of Hebei ProvinceChina
文摘Based on the elastoplastic mechanical properties of the weld and heat affected zone metals obtained by a nanoindentation test, a theoretical calculation model was established for the forming limit diagram（FLD） of tailor-welded blanks（TWBs） on the basis of plastic constitutive relations and Hosford yield criteria. Hemispherical punch bulging tests were performed to verify the FLD theoretical calculation results. The results demonstrated that not only the FLD theoretical calculation of base materials but also that of TWBs had a good agreement with their experiments. Besides, poorer formability of TWBs caused its FLD significantly lower than that of base materials. The theoretical calculation model offers a reliable approach to obtain the specific FLD of TWBs.
基金Supported by the National Natural Science Foundation of China (40801078)the Selfdetermined Research Funds of CCNU from the Colleges’ Basic Research and Operation of MOE,China~~
文摘[Objective] This study was to overview the research progress and thoughts of habitat suitability evaluation of citrus based on ecological niche theory. [Method] The research progress on habitat suitability evaluation and ecological niche theory to the niche selection of crops were comprehensively analyzed. [Result] The research thoughts of using niche theory to evaluate the habitat suitability of citrus with quality constraint were put forward, including collection and expression of citrus ecological environment and quality factors, interactive response study of the citrus ecological environment and quality, and habitat suitability evaluation and adaptation mechanism study of citrus based on quality constraint. [Conclusion] This study provided references for the development of citrus industrialization.
文摘The“prisoner’s dilemma”illustrates that everyone is rationally thinking about maximizing their own interests and taking their own best strategies,but the end result is counterproductive.In Prisoner’s Dilemma Richard Powers describes multiformareas of dilemma;to lose balance;to make choices;and ask each other:what to do next?It is a master trope for relaying the permanent impasse or dilemma of cooperation versus defection.In most cases,the prisoner's dilemma is more about the number of defeats in the game,and even a major loss of society.Individual rationality is likely to be a collective disregard,and if everyone is acting on the principle of self-interest,it is often the result that everyone is lost.Powers expresses his philosophical insight:Until a cooperative instead of antagonistic solution is collectively agreed upon,we still remain imprisoned in an interminable and oppressive struggle and conflict decided by self-interest and rational control,which is also a moral response to historical consciousness of postmodernism.
基金Project(CDJZR14130009)supported by the Fundamental Research Funds for the Central Universities,China
文摘To study the influence of blank holder type on the drawability of 5182-O aluminum sheet at room temperature, the flat blank holder and curved blank holder were employed during the deep drawing process. The microstructures were characterized by optical microscopy （OM）. The results reveal that the limiting drawing ratio （LDR） of 5182-O aluminum alloy sheet is 1.7 using the flat blank holder. The drawn cup have severe earring. Compared with using flat blank holder, the LDR of 5182-O aluminum alloy sheet is enhanced to 2.0 using curved blank holder. In addition, the earring ratio also reduces and flange wrinkling is prevented when the curved blank holder is used. These are due to a more uniform sheet flow in different directions with curved blank holder.
文摘Marx and Engels put forward the thought of spiritual production and spiritual productive force,and pointed out the viewpoint of training free and all-round developed human beings by communist culture.Lenin thought that Cultural construction was an important driving force of political civilization,he also proposed that we should develop education and science program in a planned way,foster the new socialist men,etc.Marxist Classical Writers'cultural thought is the main source of the theory of socialist cultural construction with Chinese characteristics.
文摘Tragic thought has been interwoven throughout D.H.Lawrence's works,and his tragic sense is the direct result of the social realities,cultural context and his personal experiences.
文摘Thought patterns and language are closely related,they are two aspect of the culture.Translation,a tool of intercultural communication,connects the different thought patterns.In this paper,a specific analysis of the limitation in translation caused by the difference is illustrated.Thus,translation is influenced deeply by the different thought patterns.The only way to get the reappearance to the culture in translation is to find out the principles of translation from the different thought patterns.
