Border areas are both important territorial security barriers and portals to the out-side world. Considering the complicated geopolitical environment of China＇s inland borders, analysis of the current status and mech...Border areas are both important territorial security barriers and portals to the out-side world. Considering the complicated geopolitical environment of China＇s inland borders, analysis of the current status and mechanisms of influence of geo-economy in border areas is of great significance. Namely, this analysis is important towards leveraging traditional ad- vantages to accelerate China＇s development prehensive analysis, our study constructed n border and minority areas. Based on a com- a framework to analyze the geo-economy in border areas, and also introduced three indexes： local economy, export-oriented economy and local development. In addition, our study systematically described geo-economic evolu- tion in the border areas of China. We also analyzed the mechanism of geo-economic spatial differentiation in these border areas by using geographical detectors. Our results indicated that the level of geo-economic influence in border areas has grown steadily with significant spatial differentiation. The absolute geo-economic dominance of Northeast China gradually declines over time. Areas with geo-economic advantages are highly dispersed, showing a spatial polarization pattern with several polar nuclei including Mudanjiang city （Northeast China）, Baotou city （Inner Mongolia）, Bortala Mongol Autonomous Prefecture （Xinjiang）, Dehong Dai and Jingpo Autonomous Prefecture and the city of Chongzuo （Yunnan-Guangxi area）. Geo-economics in border area is mainly influenced by national policies, the develop- ment level of neighboring countries, as well as the desire of these countries to cooperate with China in bilateral trade. Favorable policies, traffic, cultural proximity and other factors also impact the geo-economics of border areas significantly. The Inner Mongolia and Tibet areas are mainly influenced by neighboring countries, while Northeast China and Xinjiang are mainly affected by Chinese policies; the Yunnan-Guangxi area is influenced by a combination of these factors. At the end of the study, we provide our recommendations for developing policies that further geo-economic advantages in complex geopolitical environments and in areas with varied development.展开更多
The border areas of the Tibetan Plateau and the neighboring mountainous areas have a high incidence of earthquakes with a magnitude greater than M<sub>s</sub> 5.0, as well as having a dense distribution of...The border areas of the Tibetan Plateau and the neighboring mountainous areas have a high incidence of earthquakes with a magnitude greater than M<sub>s</sub> 5.0, as well as having a dense distribution of geological disasters such as collapses, landslides, and debris flows. Revealing the post-disaster economic development and recovery process is very important for enhancing disaster prevention and response capacity in order to formulate control policies and recovery methods for post-disaster economic reconstruction based on economic resilience. Using long-term socioeconomic data and the autoregressive integrated moving average (ARIMA) model, this paper calculated the economic resilience index of the areas most severely affected by the Wenchuan Earthquake of 2008 and adopted the improved variable returns to scale (VRS) date envelopment analysis (DEA) model and the Malmquist productivity index to analyze the efficiency and effect of annual post-disaster recovery. The results show that: (1) the economic resilience index of the areas most severely affected by the Wenchuan Earthquake was 0.877. The earthquake resulted in a short-term economic recession in the affected areas, but the economy returned to pre-quake levels within two years. In addition, the industrial economy was less resilient than agriculture and the service industry. (2) The comprehensive economic recovery efficiency of the disaster-stricken area in the year following the disaster was 0.603. The comprehensive efficiency, the pure technical efficiency, and the scale efficiency of the plain and hilly areas were significantly greater than those of the plateau and mountain areas. (3) The annual fluctuation in total factor productivity (TFP) following the disaster was considerable, and the economic recovery efficiency decreased significantly, resulting in a short-term economic recession. The TFP index returned to steady state following decreases of 33.7% and 15.2%, respectively, in the two years following the disaster. (4) The significant decrease in the post-disaster recovery efficiency was caused mainly by technological changes, and the renewal of the production system was the leading factor in determining the economic resilience following the disaster. With the decline in the scale of economic recovery following the earthquake, long-term economic recovery in the disaster-stricken areas depended mainly on pure technical efficiency, and the improvement in the latter was the driving force for maintaining the long-term growth of the post-disaster economy. Therefore, according to the local characteristics of natural environment and economic system, the disaster-stricken areas need to actively change and readjust their economic structures. At the same time, attention should be paid to updating the production system to enhance the level of technological progress and give full play to the scale effects of large-scale capital, new facilities, human resources, and other investment factors following the disaster so as to enhance the impact of economic resilience and recovery efficiency in response to the disaster.展开更多
Exploring the spatial and temporal evolution characteristics of the border land use multifunctionality(LUMF)provides insights for taking advantage of border land use and optimizing border land use policies.Based on th...Exploring the spatial and temporal evolution characteristics of the border land use multifunctionality(LUMF)provides insights for taking advantage of border land use and optimizing border land use policies.Based on the improved Technique for Order Preference by Similarity to an Ideal Solution(TOPSIS)mode,this study identifies and evaluates the LUMFs in the China-Vietnam border area between 2000 and 2018 from the perspectives of agricultural production,social security,ecological service,landscape recreation,and national security.The results show that:1)The comprehensive land use functions in most counties and cities continued to be improved.2)The comprehensive land use function exhibits remarkable spatial divergence and aggregation characteristics.The high-value area of the agricultural production function and social security function evolves from the east to the west.In addition,the spatial evolution of ecological service function is complicated,without an obvious spatial divergence and aggregation pattern.The landscape recreation function shows different spatial differentiation characteristics in the early and middle stage,and forms a large cluster in the later stage.Finally,the spatial evolution pattern of the national security function is significant.3)Designing differentiated border land policies,improving border land use security,and establishing a long-term mechanism for ecological protection and ecological compensation can aid in optimizing the LUMF level in the border area.展开更多
Objective: To investigate the microecology and common infection of the female vagina in border area of Chongzuo City. Methods: Female patients in the outpatient department and inpatient department of gynecology of our...Objective: To investigate the microecology and common infection of the female vagina in border area of Chongzuo City. Methods: Female patients in the outpatient department and inpatient department of gynecology of our hospital from April 1, 2018 to August 23, 2021 were selected as the research objects. The reproductive tract secretions of all patients were examined by microecological examination, morphological examination, chemical analysis and microscopic examination, and the results of various indicators were statistically analyzed to draw relevant conclusions. Results: Among the 1498 women with vaginal micro- ecological imbalances, cleanliness was determined to be 534 cases of degree II, 868 cases of degree III, and 96 cases of degree IV;Nugent scores were 9 - 10 in 9 cases, 8 in 122 cases, 7 in 30 cases, 6 in 18 cases, 5 in 8 cases, 4 in 717 cases, 3 in 248 cases, 2 in 209 cases, 1 in 118 cases, and 0 in 19 cases. AV scores were 8 in 1 case, 7 in 1 case, 6 in 2 cases, 5 in 9 cases, 4 in 84 cases, 3 in 207 cases, 2 in 850 cases, 1 in 284 cases, and 0 in 60 cases. Among the pathogen infections, 99 cases were mycoplasma, 361 cases were candida, 199 cases were bacterial and 8 cases were trichomonas;In chemical analysis, there were 138 cases with pH 5.1, 326 cases with pH 4.8, 775 cases with pH 4.6, 217 cases with pH 4.4, and 42 cases with pH 4.1;meanwhile, 1390 cases were positive for hydrogen peroxide, 505 cases were positive for glucosidase, 487 cases were positive for acetylglucosaminidase, 184 cases were positive for sialidase, 290 cases were positive for proline amino-peptidase, 501 cases were positive for coagulase, and 1064 cases were positive for leukocyte esterase. Conclusion: Female reproductive tract microecology is more complex, and the pathogens of infection are also diverse. A systematic examination can clarify the occurrence and development of the disease, and then provide reliable laboratory data for clinical treatment and guide clinical medication.展开更多
Guangxi is in the southwest border of China, and Guilin landscape and ethnic customs as the two ＂trump cards＂ have been widely utilized in the communication between Guaaagxi and the outside world. In fact, Guangxi o...Guangxi is in the southwest border of China, and Guilin landscape and ethnic customs as the two ＂trump cards＂ have been widely utilized in the communication between Guaaagxi and the outside world. In fact, Guangxi owns many cultural resources such as humanity history, characteristic diet, and local operas to be further promoted, among which historical figures resources are especially abundant. However, the development and protection of the historical figures resources are inconsistent with the current economic and social development, and feature obviously certain hysteresis. In this paper, by taking Mrs. WA who was a heroine of the Zhuang nationality to resist foreign invasions in the Ming Dynasty, the necessary development road of the historical figures resources is explored based on analyzing the current development and protection of the historical figures resources in China＇ s Guangxi border areas, and then innovative concepts and new ideas are proposed with great efforts.展开更多
With the popularization of higher education in China,the employment situation of college students is more complex and severe.This paper adopts the questionnaire method to explore the employment view of acupuncture and...With the popularization of higher education in China,the employment situation of college students is more complex and severe.This paper adopts the questionnaire method to explore the employment view of acupuncture and tuina undergraduates of Yunnan University of Traditional Chinese Medicine.The employment concept of acupuncture and tuina undergraduates in the minority border areas has changed greatly.After graduation,97.95%of students choose to work in fields related to medicine and acupuncture,prefer positions close to home,and are attracted to high-salary companies,among other factors.Therefore,enhancing the competitive advantages of medical students by guiding their career planning,providing employment selection advice,fostering innovation and entrepreneurship,improving basic skills,and offering graduate entrance examination guidance is crucial for broadening their employment opportunities.展开更多
This article offers an analytic explanation of the geographic, historical and environmental features as well as the strategic positions of CAS-affiliated border area institutes (BAIs). In addition, it puts forward sev...This article offers an analytic explanation of the geographic, historical and environmental features as well as the strategic positions of CAS-affiliated border area institutes (BAIs). In addition, it puts forward several suggestions in a bid to advance their reform and development.展开更多
The special geography and human environment of the Qinghai-Tibet Plateau has created the unique hydrochemical characteristics of the region’s natural water,which has been preserved in a largely natural state.However,...The special geography and human environment of the Qinghai-Tibet Plateau has created the unique hydrochemical characteristics of the region’s natural water,which has been preserved in a largely natural state.However,as the intensity of anthropogenic activities in the region has continued to increase,the water environment and hydrochemical characteristics of the Qinghai-Tibet Plateau have altered.In this study,water samples from the western,southern,and northeastern border areas of the Qinghai-Tibet Plateau,where human activities are ongoing,were collected,analyzed,and measured.The regional differences and factors controlling them were also investigated.The key results were obtained as follows.(1) Differences in the physical properties and hydrochemical characteristics,and their controlling factors,occurred in the different boundary areas of the Qinghai-Tibet Plateau.These differences were mainly the consequence of the geographical environment and geological conditions.(2) The water quality was good and suitable for drinking,with most samples meeting GB (Chinese national) and WHO (World Health Organization) drinking water standards.(3) The chemical properties of water were mainly controlled by the weathering of carbonates and the dissolution of evaporative rocks,with the former the most influential.(4) The biological quality indicators of natural water in the border areas were far superior to GB and WHO drinking water standards.展开更多
The development of education and the implementation of the strategy of rural revitalization are both decisions made by the Chinese government according to the needs of the country.The article first elaborates the rela...The development of education and the implementation of the strategy of rural revitalization are both decisions made by the Chinese government according to the needs of the country.The article first elaborates the relationship between education and rural revitalization.Second,it takes Guangxi border ethnic areas as an example to analyze the current problems and deficiencies in the development of education.Finally,it puts forward targeted suggestions,including a hundredyear plan and education-oriented.Education is the cornerstone of national revitalization.With a view to enabling education to play a more effective role in rural revitalization.展开更多
This study is being carried out in the cross-border area of </span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-fam...This study is being carried out in the cross-border area of </span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">the tri-national Dja-Odzala-Minkébé (TRIDOM), subject of a cooperation agreement between Cameroon, Congo a</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">nd Gabon in 2005. The purpose of this study is to analyze the dynamics of changes in land use in the context of cross-border cooperation. Geographic information systems and remote sensing were used to produce the various land use maps. For this purpose, the MERIS satellite images for the periods 1992, 2005 and 2018 were used. The exploration of the different images and the field visits made it possible to identify the following six land use classes: dense forests, degraded/deforested forests, savannas, swamp forests, buildings and bare soils, water surfaces. It emerges that the TRIDOM landscape is mainly occupied by dense forests which represent 97.02%, 96.72% and 96.52% respectively in 1992, 2005 and 2018. Then, degraded/deforested forests and savannas which would correspond to cultivation areas and fallow land only represent respectively 1.06% and 0.68% of the landscape in 1992. This proportion in 2005 is respectively 1.22% and 0.77%, whereas in 2018, it is respectively 1.36% and 0.81% of the massif. The landscape of TRIDOM has not experienced any significant land use change during the period after the signing of the cooperation agreement. Historical rates of deforestation are low during the period under study. They are estimated at 0.042% and 0.030% respectively for the period 1992-2005 and the period 2005-2018. These low rates of deforestation seem to be due to the measures taken to secure and sustainably manage the massif taken by the three countries, the low population density in this area and the still difficult level of accessibility of a large part of the massif.展开更多
Limited detection resolution leads to fuzzy areas during the measurement, and the discrimination of the border of a fuzzy area helps to use the resolution stability. In this way, measurement precision is greatly impro...Limited detection resolution leads to fuzzy areas during the measurement, and the discrimination of the border of a fuzzy area helps to use the resolution stability. In this way, measurement precision is greatly improved, hence this phenomenon is named the border effect. The resolution fuzzy area and its application should be studied to realize highresolution measurement. During the measurement of any frequency signal, the fuzzy areas of phase-coincidence detection are always discrete and irregular. In this paper the difficulty in capturing the border information of discrete fuzzy areas is overcome and extra-high resolution measurement is implemented. Measurement precision of any frequency-signal can easily reach better than 1 × 10^-11/s in a wide range of frequencies, showing the great importance of the border effect. An in-depth study of this issue has great significance for frequency standard comparison, signal processing, telecommunication,and fundamental subjects.展开更多
基金National Natural Science Foundation of China, No.41701131, No.41530634 Key Consulting Project of the Chinese Academy of Science and Technology Strategic Consulting, No.Y02015001 Funding of Institute of Geographic Sciences and Natural Resources Research, CAS, No.Y55R1203YZ
文摘Border areas are both important territorial security barriers and portals to the out-side world. Considering the complicated geopolitical environment of China＇s inland borders, analysis of the current status and mechanisms of influence of geo-economy in border areas is of great significance. Namely, this analysis is important towards leveraging traditional ad- vantages to accelerate China＇s development prehensive analysis, our study constructed n border and minority areas. Based on a com- a framework to analyze the geo-economy in border areas, and also introduced three indexes： local economy, export-oriented economy and local development. In addition, our study systematically described geo-economic evolu- tion in the border areas of China. We also analyzed the mechanism of geo-economic spatial differentiation in these border areas by using geographical detectors. Our results indicated that the level of geo-economic influence in border areas has grown steadily with significant spatial differentiation. The absolute geo-economic dominance of Northeast China gradually declines over time. Areas with geo-economic advantages are highly dispersed, showing a spatial polarization pattern with several polar nuclei including Mudanjiang city （Northeast China）, Baotou city （Inner Mongolia）, Bortala Mongol Autonomous Prefecture （Xinjiang）, Dehong Dai and Jingpo Autonomous Prefecture and the city of Chongzuo （Yunnan-Guangxi area）. Geo-economics in border area is mainly influenced by national policies, the develop- ment level of neighboring countries, as well as the desire of these countries to cooperate with China in bilateral trade. Favorable policies, traffic, cultural proximity and other factors also impact the geo-economics of border areas significantly. The Inner Mongolia and Tibet areas are mainly influenced by neighboring countries, while Northeast China and Xinjiang are mainly affected by Chinese policies; the Yunnan-Guangxi area is influenced by a combination of these factors. At the end of the study, we provide our recommendations for developing policies that further geo-economic advantages in complex geopolitical environments and in areas with varied development.
基金Second Tibetan Plateau Scientific Expedition and Research Program(STEP),No.2019QZKK0406National Natural Science Foundation of China,No.41807510,No.41501139。
文摘The border areas of the Tibetan Plateau and the neighboring mountainous areas have a high incidence of earthquakes with a magnitude greater than M<sub>s</sub> 5.0, as well as having a dense distribution of geological disasters such as collapses, landslides, and debris flows. Revealing the post-disaster economic development and recovery process is very important for enhancing disaster prevention and response capacity in order to formulate control policies and recovery methods for post-disaster economic reconstruction based on economic resilience. Using long-term socioeconomic data and the autoregressive integrated moving average (ARIMA) model, this paper calculated the economic resilience index of the areas most severely affected by the Wenchuan Earthquake of 2008 and adopted the improved variable returns to scale (VRS) date envelopment analysis (DEA) model and the Malmquist productivity index to analyze the efficiency and effect of annual post-disaster recovery. The results show that: (1) the economic resilience index of the areas most severely affected by the Wenchuan Earthquake was 0.877. The earthquake resulted in a short-term economic recession in the affected areas, but the economy returned to pre-quake levels within two years. In addition, the industrial economy was less resilient than agriculture and the service industry. (2) The comprehensive economic recovery efficiency of the disaster-stricken area in the year following the disaster was 0.603. The comprehensive efficiency, the pure technical efficiency, and the scale efficiency of the plain and hilly areas were significantly greater than those of the plateau and mountain areas. (3) The annual fluctuation in total factor productivity (TFP) following the disaster was considerable, and the economic recovery efficiency decreased significantly, resulting in a short-term economic recession. The TFP index returned to steady state following decreases of 33.7% and 15.2%, respectively, in the two years following the disaster. (4) The significant decrease in the post-disaster recovery efficiency was caused mainly by technological changes, and the renewal of the production system was the leading factor in determining the economic resilience following the disaster. With the decline in the scale of economic recovery following the earthquake, long-term economic recovery in the disaster-stricken areas depended mainly on pure technical efficiency, and the improvement in the latter was the driving force for maintaining the long-term growth of the post-disaster economy. Therefore, according to the local characteristics of natural environment and economic system, the disaster-stricken areas need to actively change and readjust their economic structures. At the same time, attention should be paid to updating the production system to enhance the level of technological progress and give full play to the scale effects of large-scale capital, new facilities, human resources, and other investment factors following the disaster so as to enhance the impact of economic resilience and recovery efficiency in response to the disaster.
基金Under the auspices of National Natural Science Project(No.42161046)National Social Science Project(No.21CJY075)+2 种基金Guangxi Natural Science Project(No.2021JJB150070)Guangxi Philosophy and Social Science Project(No.20FJY027)Guangxi First-class Discipline Applied Economics Construction Project Fund(Guangxi Education and Scientific Research(No.[2022]No.1))。
文摘Exploring the spatial and temporal evolution characteristics of the border land use multifunctionality(LUMF)provides insights for taking advantage of border land use and optimizing border land use policies.Based on the improved Technique for Order Preference by Similarity to an Ideal Solution(TOPSIS)mode,this study identifies and evaluates the LUMFs in the China-Vietnam border area between 2000 and 2018 from the perspectives of agricultural production,social security,ecological service,landscape recreation,and national security.The results show that:1)The comprehensive land use functions in most counties and cities continued to be improved.2)The comprehensive land use function exhibits remarkable spatial divergence and aggregation characteristics.The high-value area of the agricultural production function and social security function evolves from the east to the west.In addition,the spatial evolution of ecological service function is complicated,without an obvious spatial divergence and aggregation pattern.The landscape recreation function shows different spatial differentiation characteristics in the early and middle stage,and forms a large cluster in the later stage.Finally,the spatial evolution pattern of the national security function is significant.3)Designing differentiated border land policies,improving border land use security,and establishing a long-term mechanism for ecological protection and ecological compensation can aid in optimizing the LUMF level in the border area.
文摘Objective: To investigate the microecology and common infection of the female vagina in border area of Chongzuo City. Methods: Female patients in the outpatient department and inpatient department of gynecology of our hospital from April 1, 2018 to August 23, 2021 were selected as the research objects. The reproductive tract secretions of all patients were examined by microecological examination, morphological examination, chemical analysis and microscopic examination, and the results of various indicators were statistically analyzed to draw relevant conclusions. Results: Among the 1498 women with vaginal micro- ecological imbalances, cleanliness was determined to be 534 cases of degree II, 868 cases of degree III, and 96 cases of degree IV;Nugent scores were 9 - 10 in 9 cases, 8 in 122 cases, 7 in 30 cases, 6 in 18 cases, 5 in 8 cases, 4 in 717 cases, 3 in 248 cases, 2 in 209 cases, 1 in 118 cases, and 0 in 19 cases. AV scores were 8 in 1 case, 7 in 1 case, 6 in 2 cases, 5 in 9 cases, 4 in 84 cases, 3 in 207 cases, 2 in 850 cases, 1 in 284 cases, and 0 in 60 cases. Among the pathogen infections, 99 cases were mycoplasma, 361 cases were candida, 199 cases were bacterial and 8 cases were trichomonas;In chemical analysis, there were 138 cases with pH 5.1, 326 cases with pH 4.8, 775 cases with pH 4.6, 217 cases with pH 4.4, and 42 cases with pH 4.1;meanwhile, 1390 cases were positive for hydrogen peroxide, 505 cases were positive for glucosidase, 487 cases were positive for acetylglucosaminidase, 184 cases were positive for sialidase, 290 cases were positive for proline amino-peptidase, 501 cases were positive for coagulase, and 1064 cases were positive for leukocyte esterase. Conclusion: Female reproductive tract microecology is more complex, and the pathogens of infection are also diverse. A systematic examination can clarify the occurrence and development of the disease, and then provide reliable laboratory data for clinical treatment and guide clinical medication.
文摘Guangxi is in the southwest border of China, and Guilin landscape and ethnic customs as the two ＂trump cards＂ have been widely utilized in the communication between Guaaagxi and the outside world. In fact, Guangxi owns many cultural resources such as humanity history, characteristic diet, and local operas to be further promoted, among which historical figures resources are especially abundant. However, the development and protection of the historical figures resources are inconsistent with the current economic and social development, and feature obviously certain hysteresis. In this paper, by taking Mrs. WA who was a heroine of the Zhuang nationality to resist foreign invasions in the Ming Dynasty, the necessary development road of the historical figures resources is explored based on analyzing the current development and protection of the historical figures resources in China＇ s Guangxi border areas, and then innovative concepts and new ideas are proposed with great efforts.
文摘With the popularization of higher education in China,the employment situation of college students is more complex and severe.This paper adopts the questionnaire method to explore the employment view of acupuncture and tuina undergraduates of Yunnan University of Traditional Chinese Medicine.The employment concept of acupuncture and tuina undergraduates in the minority border areas has changed greatly.After graduation,97.95%of students choose to work in fields related to medicine and acupuncture,prefer positions close to home,and are attracted to high-salary companies,among other factors.Therefore,enhancing the competitive advantages of medical students by guiding their career planning,providing employment selection advice,fostering innovation and entrepreneurship,improving basic skills,and offering graduate entrance examination guidance is crucial for broadening their employment opportunities.
文摘This article offers an analytic explanation of the geographic, historical and environmental features as well as the strategic positions of CAS-affiliated border area institutes (BAIs). In addition, it puts forward several suggestions in a bid to advance their reform and development.
基金Key R&D and Transformation Program of Tibet,No.XZ201901NB08Major Science and Technology Project of Tibet,No.XZ201901NA03,No.XZ201801NA02
文摘The special geography and human environment of the Qinghai-Tibet Plateau has created the unique hydrochemical characteristics of the region’s natural water,which has been preserved in a largely natural state.However,as the intensity of anthropogenic activities in the region has continued to increase,the water environment and hydrochemical characteristics of the Qinghai-Tibet Plateau have altered.In this study,water samples from the western,southern,and northeastern border areas of the Qinghai-Tibet Plateau,where human activities are ongoing,were collected,analyzed,and measured.The regional differences and factors controlling them were also investigated.The key results were obtained as follows.(1) Differences in the physical properties and hydrochemical characteristics,and their controlling factors,occurred in the different boundary areas of the Qinghai-Tibet Plateau.These differences were mainly the consequence of the geographical environment and geological conditions.(2) The water quality was good and suitable for drinking,with most samples meeting GB (Chinese national) and WHO (World Health Organization) drinking water standards.(3) The chemical properties of water were mainly controlled by the weathering of carbonates and the dissolution of evaporative rocks,with the former the most influential.(4) The biological quality indicators of natural water in the border areas were far superior to GB and WHO drinking water standards.
文摘The development of education and the implementation of the strategy of rural revitalization are both decisions made by the Chinese government according to the needs of the country.The article first elaborates the relationship between education and rural revitalization.Second,it takes Guangxi border ethnic areas as an example to analyze the current problems and deficiencies in the development of education.Finally,it puts forward targeted suggestions,including a hundredyear plan and education-oriented.Education is the cornerstone of national revitalization.With a view to enabling education to play a more effective role in rural revitalization.
文摘This study is being carried out in the cross-border area of </span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">the tri-national Dja-Odzala-Minkébé (TRIDOM), subject of a cooperation agreement between Cameroon, Congo a</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">nd Gabon in 2005. The purpose of this study is to analyze the dynamics of changes in land use in the context of cross-border cooperation. Geographic information systems and remote sensing were used to produce the various land use maps. For this purpose, the MERIS satellite images for the periods 1992, 2005 and 2018 were used. The exploration of the different images and the field visits made it possible to identify the following six land use classes: dense forests, degraded/deforested forests, savannas, swamp forests, buildings and bare soils, water surfaces. It emerges that the TRIDOM landscape is mainly occupied by dense forests which represent 97.02%, 96.72% and 96.52% respectively in 1992, 2005 and 2018. Then, degraded/deforested forests and savannas which would correspond to cultivation areas and fallow land only represent respectively 1.06% and 0.68% of the landscape in 1992. This proportion in 2005 is respectively 1.22% and 0.77%, whereas in 2018, it is respectively 1.36% and 0.81% of the massif. The landscape of TRIDOM has not experienced any significant land use change during the period after the signing of the cooperation agreement. Historical rates of deforestation are low during the period under study. They are estimated at 0.042% and 0.030% respectively for the period 1992-2005 and the period 2005-2018. These low rates of deforestation seem to be due to the measures taken to secure and sustainably manage the massif taken by the three countries, the low population density in this area and the still difficult level of accessibility of a large part of the massif.
基金Project supported by the National Natural Science Foundation of China(Grant Nos.10978017 and 61201288)the Natural Science Foundation of Research Plan Projects of Shaanxi Province+1 种基金China(Grant No.2014JM2–6128)the Sino-Poland Science and Technology Cooperation Projects(Grant No.36-33)
文摘Limited detection resolution leads to fuzzy areas during the measurement, and the discrimination of the border of a fuzzy area helps to use the resolution stability. In this way, measurement precision is greatly improved, hence this phenomenon is named the border effect. The resolution fuzzy area and its application should be studied to realize highresolution measurement. During the measurement of any frequency signal, the fuzzy areas of phase-coincidence detection are always discrete and irregular. In this paper the difficulty in capturing the border information of discrete fuzzy areas is overcome and extra-high resolution measurement is implemented. Measurement precision of any frequency-signal can easily reach better than 1 × 10^-11/s in a wide range of frequencies, showing the great importance of the border effect. An in-depth study of this issue has great significance for frequency standard comparison, signal processing, telecommunication,and fundamental subjects.
